Activity.java revision 09571f89435f3639a747cf4a7a0705b494c7a93e
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import static android.Manifest.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS; 20 21import static java.lang.Character.MIN_VALUE; 22 23import android.annotation.CallSuper; 24import android.annotation.DrawableRes; 25import android.annotation.IdRes; 26import android.annotation.IntDef; 27import android.annotation.LayoutRes; 28import android.annotation.MainThread; 29import android.annotation.NonNull; 30import android.annotation.Nullable; 31import android.annotation.RequiresPermission; 32import android.annotation.StyleRes; 33import android.annotation.SystemApi; 34import android.app.VoiceInteractor.Request; 35import android.app.admin.DevicePolicyManager; 36import android.app.assist.AssistContent; 37import android.content.ComponentCallbacks2; 38import android.content.ComponentName; 39import android.content.ContentResolver; 40import android.content.Context; 41import android.content.CursorLoader; 42import android.content.IIntentSender; 43import android.content.Intent; 44import android.content.IntentSender; 45import android.content.SharedPreferences; 46import android.content.pm.ActivityInfo; 47import android.content.pm.ApplicationInfo; 48import android.content.pm.PackageManager; 49import android.content.pm.PackageManager.NameNotFoundException; 50import android.content.res.Configuration; 51import android.content.res.Resources; 52import android.content.res.TypedArray; 53import android.database.Cursor; 54import android.graphics.Bitmap; 55import android.graphics.Canvas; 56import android.graphics.Color; 57import android.graphics.Rect; 58import android.graphics.drawable.Drawable; 59import android.media.AudioManager; 60import android.media.session.MediaController; 61import android.net.Uri; 62import android.os.BadParcelableException; 63import android.os.Build; 64import android.os.Bundle; 65import android.os.Handler; 66import android.os.IBinder; 67import android.os.Looper; 68import android.os.Parcelable; 69import android.os.PersistableBundle; 70import android.os.RemoteException; 71import android.os.ServiceManager.ServiceNotFoundException; 72import android.os.StrictMode; 73import android.os.SystemProperties; 74import android.os.UserHandle; 75import android.text.Selection; 76import android.text.SpannableStringBuilder; 77import android.text.TextUtils; 78import android.text.method.TextKeyListener; 79import android.transition.Scene; 80import android.transition.TransitionManager; 81import android.util.ArrayMap; 82import android.util.AttributeSet; 83import android.util.EventLog; 84import android.util.Log; 85import android.util.PrintWriterPrinter; 86import android.util.Slog; 87import android.util.SparseArray; 88import android.util.SuperNotCalledException; 89import android.view.ActionMode; 90import android.view.ContextMenu; 91import android.view.ContextMenu.ContextMenuInfo; 92import android.view.ContextThemeWrapper; 93import android.view.DragAndDropPermissions; 94import android.view.DragEvent; 95import android.view.KeyEvent; 96import android.view.KeyboardShortcutGroup; 97import android.view.KeyboardShortcutInfo; 98import android.view.LayoutInflater; 99import android.view.Menu; 100import android.view.MenuInflater; 101import android.view.MenuItem; 102import android.view.MotionEvent; 103import android.view.RemoteAnimationDefinition; 104import android.view.SearchEvent; 105import android.view.View; 106import android.view.View.OnCreateContextMenuListener; 107import android.view.ViewGroup; 108import android.view.ViewGroup.LayoutParams; 109import android.view.ViewManager; 110import android.view.ViewRootImpl; 111import android.view.ViewRootImpl.ActivityConfigCallback; 112import android.view.Window; 113import android.view.Window.WindowControllerCallback; 114import android.view.WindowManager; 115import android.view.WindowManagerGlobal; 116import android.view.accessibility.AccessibilityEvent; 117import android.view.autofill.AutofillId; 118import android.view.autofill.AutofillManager; 119import android.view.autofill.AutofillManager.AutofillClient; 120import android.view.autofill.AutofillPopupWindow; 121import android.view.autofill.IAutofillWindowPresenter; 122import android.widget.AdapterView; 123import android.widget.Toast; 124import android.widget.Toolbar; 125 126import com.android.internal.annotations.GuardedBy; 127import com.android.internal.app.IVoiceInteractor; 128import com.android.internal.app.ToolbarActionBar; 129import com.android.internal.app.WindowDecorActionBar; 130import com.android.internal.policy.PhoneWindow; 131 132import dalvik.system.VMRuntime; 133 134import java.io.FileDescriptor; 135import java.io.PrintWriter; 136import java.lang.annotation.Retention; 137import java.lang.annotation.RetentionPolicy; 138import java.util.ArrayList; 139import java.util.Arrays; 140import java.util.HashMap; 141import java.util.List; 142 143 144/** 145 * An activity is a single, focused thing that the user can do. Almost all 146 * activities interact with the user, so the Activity class takes care of 147 * creating a window for you in which you can place your UI with 148 * {@link #setContentView}. While activities are often presented to the user 149 * as full-screen windows, they can also be used in other ways: as floating 150 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 151 * or embedded inside of another activity (using {@link ActivityGroup}). 152 * 153 * There are two methods almost all subclasses of Activity will implement: 154 * 155 * <ul> 156 * <li> {@link #onCreate} is where you initialize your activity. Most 157 * importantly, here you will usually call {@link #setContentView(int)} 158 * with a layout resource defining your UI, and using {@link #findViewById} 159 * to retrieve the widgets in that UI that you need to interact with 160 * programmatically. 161 * 162 * <li> {@link #onPause} is where you deal with the user leaving your 163 * activity. Most importantly, any changes made by the user should at this 164 * point be committed (usually to the 165 * {@link android.content.ContentProvider} holding the data). 166 * </ul> 167 * 168 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 169 * activity classes must have a corresponding 170 * {@link android.R.styleable#AndroidManifestActivity <activity>} 171 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 172 * 173 * <p>Topics covered here: 174 * <ol> 175 * <li><a href="#Fragments">Fragments</a> 176 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 177 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 178 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 179 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 180 * <li><a href="#Permissions">Permissions</a> 181 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 182 * </ol> 183 * 184 * <div class="special reference"> 185 * <h3>Developer Guides</h3> 186 * <p>The Activity class is an important part of an application's overall lifecycle, 187 * and the way activities are launched and put together is a fundamental 188 * part of the platform's application model. For a detailed perspective on the structure of an 189 * Android application and how activities behave, please read the 190 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 191 * <a href="{@docRoot}guide/components/tasks-and-back-stack.html">Tasks and Back Stack</a> 192 * developer guides.</p> 193 * 194 * <p>You can also find a detailed discussion about how to create activities in the 195 * <a href="{@docRoot}guide/components/activities.html">Activities</a> 196 * developer guide.</p> 197 * </div> 198 * 199 * <a name="Fragments"></a> 200 * <h3>Fragments</h3> 201 * 202 * <p>The {@link android.support.v4.app.FragmentActivity} subclass 203 * can make use of the {@link android.support.v4.app.Fragment} class to better 204 * modularize their code, build more sophisticated user interfaces for larger 205 * screens, and help scale their application between small and large screens.</p> 206 * 207 * <p>For more information about using fragments, read the 208 * <a href="{@docRoot}guide/components/fragments.html">Fragments</a> developer guide.</p> 209 * 210 * <a name="ActivityLifecycle"></a> 211 * <h3>Activity Lifecycle</h3> 212 * 213 * <p>Activities in the system are managed as an <em>activity stack</em>. 214 * When a new activity is started, it is placed on the top of the stack 215 * and becomes the running activity -- the previous activity always remains 216 * below it in the stack, and will not come to the foreground again until 217 * the new activity exits.</p> 218 * 219 * <p>An activity has essentially four states:</p> 220 * <ul> 221 * <li> If an activity is in the foreground of the screen (at the top of 222 * the stack), 223 * it is <em>active</em> or <em>running</em>. </li> 224 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 225 * or transparent activity has focus on top of your activity), it 226 * is <em>paused</em>. A paused activity is completely alive (it 227 * maintains all state and member information and remains attached to 228 * the window manager), but can be killed by the system in extreme 229 * low memory situations. 230 * <li>If an activity is completely obscured by another activity, 231 * it is <em>stopped</em>. It still retains all state and member information, 232 * however, it is no longer visible to the user so its window is hidden 233 * and it will often be killed by the system when memory is needed 234 * elsewhere.</li> 235 * <li>If an activity is paused or stopped, the system can drop the activity 236 * from memory by either asking it to finish, or simply killing its 237 * process. When it is displayed again to the user, it must be 238 * completely restarted and restored to its previous state.</li> 239 * </ul> 240 * 241 * <p>The following diagram shows the important state paths of an Activity. 242 * The square rectangles represent callback methods you can implement to 243 * perform operations when the Activity moves between states. The colored 244 * ovals are major states the Activity can be in.</p> 245 * 246 * <p><img src="../../../images/activity_lifecycle.png" 247 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 248 * 249 * <p>There are three key loops you may be interested in monitoring within your 250 * activity: 251 * 252 * <ul> 253 * <li>The <b>entire lifetime</b> of an activity happens between the first call 254 * to {@link android.app.Activity#onCreate} through to a single final call 255 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 256 * of "global" state in onCreate(), and release all remaining resources in 257 * onDestroy(). For example, if it has a thread running in the background 258 * to download data from the network, it may create that thread in onCreate() 259 * and then stop the thread in onDestroy(). 260 * 261 * <li>The <b>visible lifetime</b> of an activity happens between a call to 262 * {@link android.app.Activity#onStart} until a corresponding call to 263 * {@link android.app.Activity#onStop}. During this time the user can see the 264 * activity on-screen, though it may not be in the foreground and interacting 265 * with the user. Between these two methods you can maintain resources that 266 * are needed to show the activity to the user. For example, you can register 267 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 268 * that impact your UI, and unregister it in onStop() when the user no 269 * longer sees what you are displaying. The onStart() and onStop() methods 270 * can be called multiple times, as the activity becomes visible and hidden 271 * to the user. 272 * 273 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 274 * {@link android.app.Activity#onResume} until a corresponding call to 275 * {@link android.app.Activity#onPause}. During this time the activity is 276 * in front of all other activities and interacting with the user. An activity 277 * can frequently go between the resumed and paused states -- for example when 278 * the device goes to sleep, when an activity result is delivered, when a new 279 * intent is delivered -- so the code in these methods should be fairly 280 * lightweight. 281 * </ul> 282 * 283 * <p>The entire lifecycle of an activity is defined by the following 284 * Activity methods. All of these are hooks that you can override 285 * to do appropriate work when the activity changes state. All 286 * activities will implement {@link android.app.Activity#onCreate} 287 * to do their initial setup; many will also implement 288 * {@link android.app.Activity#onPause} to commit changes to data and 289 * otherwise prepare to stop interacting with the user. You should always 290 * call up to your superclass when implementing these methods.</p> 291 * 292 * </p> 293 * <pre class="prettyprint"> 294 * public class Activity extends ApplicationContext { 295 * protected void onCreate(Bundle savedInstanceState); 296 * 297 * protected void onStart(); 298 * 299 * protected void onRestart(); 300 * 301 * protected void onResume(); 302 * 303 * protected void onPause(); 304 * 305 * protected void onStop(); 306 * 307 * protected void onDestroy(); 308 * } 309 * </pre> 310 * 311 * <p>In general the movement through an activity's lifecycle looks like 312 * this:</p> 313 * 314 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 315 * <colgroup align="left" span="3" /> 316 * <colgroup align="left" /> 317 * <colgroup align="center" /> 318 * <colgroup align="center" /> 319 * 320 * <thead> 321 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 322 * </thead> 323 * 324 * <tbody> 325 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</td> 326 * <td>Called when the activity is first created. 327 * This is where you should do all of your normal static set up: 328 * create views, bind data to lists, etc. This method also 329 * provides you with a Bundle containing the activity's previously 330 * frozen state, if there was one. 331 * <p>Always followed by <code>onStart()</code>.</td> 332 * <td align="center">No</td> 333 * <td align="center"><code>onStart()</code></td> 334 * </tr> 335 * 336 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 337 * <td colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</td> 338 * <td>Called after your activity has been stopped, prior to it being 339 * started again. 340 * <p>Always followed by <code>onStart()</code></td> 341 * <td align="center">No</td> 342 * <td align="center"><code>onStart()</code></td> 343 * </tr> 344 * 345 * <tr><td colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</td> 346 * <td>Called when the activity is becoming visible to the user. 347 * <p>Followed by <code>onResume()</code> if the activity comes 348 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 349 * <td align="center">No</td> 350 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 351 * </tr> 352 * 353 * <tr><td rowspan="2" style="border-left: none;"> </td> 354 * <td align="left" border="0">{@link android.app.Activity#onResume onResume()}</td> 355 * <td>Called when the activity will start 356 * interacting with the user. At this point your activity is at 357 * the top of the activity stack, with user input going to it. 358 * <p>Always followed by <code>onPause()</code>.</td> 359 * <td align="center">No</td> 360 * <td align="center"><code>onPause()</code></td> 361 * </tr> 362 * 363 * <tr><td align="left" border="0">{@link android.app.Activity#onPause onPause()}</td> 364 * <td>Called when the system is about to start resuming a previous 365 * activity. This is typically used to commit unsaved changes to 366 * persistent data, stop animations and other things that may be consuming 367 * CPU, etc. Implementations of this method must be very quick because 368 * the next activity will not be resumed until this method returns. 369 * <p>Followed by either <code>onResume()</code> if the activity 370 * returns back to the front, or <code>onStop()</code> if it becomes 371 * invisible to the user.</td> 372 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 373 * <td align="center"><code>onResume()</code> or<br> 374 * <code>onStop()</code></td> 375 * </tr> 376 * 377 * <tr><td colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</td> 378 * <td>Called when the activity is no longer visible to the user, because 379 * another activity has been resumed and is covering this one. This 380 * may happen either because a new activity is being started, an existing 381 * one is being brought in front of this one, or this one is being 382 * destroyed. 383 * <p>Followed by either <code>onRestart()</code> if 384 * this activity is coming back to interact with the user, or 385 * <code>onDestroy()</code> if this activity is going away.</td> 386 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 387 * <td align="center"><code>onRestart()</code> or<br> 388 * <code>onDestroy()</code></td> 389 * </tr> 390 * 391 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</td> 392 * <td>The final call you receive before your 393 * activity is destroyed. This can happen either because the 394 * activity is finishing (someone called {@link Activity#finish} on 395 * it, or because the system is temporarily destroying this 396 * instance of the activity to save space. You can distinguish 397 * between these two scenarios with the {@link 398 * Activity#isFinishing} method.</td> 399 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 400 * <td align="center"><em>nothing</em></td> 401 * </tr> 402 * </tbody> 403 * </table> 404 * 405 * <p>Note the "Killable" column in the above table -- for those methods that 406 * are marked as being killable, after that method returns the process hosting the 407 * activity may be killed by the system <em>at any time</em> without another line 408 * of its code being executed. Because of this, you should use the 409 * {@link #onPause} method to write any persistent data (such as user edits) 410 * to storage. In addition, the method 411 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 412 * in such a background state, allowing you to save away any dynamic instance 413 * state in your activity into the given Bundle, to be later received in 414 * {@link #onCreate} if the activity needs to be re-created. 415 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 416 * section for more information on how the lifecycle of a process is tied 417 * to the activities it is hosting. Note that it is important to save 418 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 419 * because the latter is not part of the lifecycle callbacks, so will not 420 * be called in every situation as described in its documentation.</p> 421 * 422 * <p class="note">Be aware that these semantics will change slightly between 423 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 424 * vs. those targeting prior platforms. Starting with Honeycomb, an application 425 * is not in the killable state until its {@link #onStop} has returned. This 426 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 427 * safely called after {@link #onPause()} and allows and application to safely 428 * wait until {@link #onStop()} to save persistent state.</p> 429 * 430 * <p class="note">For applications targeting platforms starting with 431 * {@link android.os.Build.VERSION_CODES#P} {@link #onSaveInstanceState(Bundle)} 432 * will always be called after {@link #onStop}, so an application may safely 433 * perform fragment transactions in {@link #onStop} and will be able to save 434 * persistent state later.</p> 435 * 436 * <p>For those methods that are not marked as being killable, the activity's 437 * process will not be killed by the system starting from the time the method 438 * is called and continuing after it returns. Thus an activity is in the killable 439 * state, for example, between after <code>onPause()</code> to the start of 440 * <code>onResume()</code>.</p> 441 * 442 * <a name="ConfigurationChanges"></a> 443 * <h3>Configuration Changes</h3> 444 * 445 * <p>If the configuration of the device (as defined by the 446 * {@link Configuration Resources.Configuration} class) changes, 447 * then anything displaying a user interface will need to update to match that 448 * configuration. Because Activity is the primary mechanism for interacting 449 * with the user, it includes special support for handling configuration 450 * changes.</p> 451 * 452 * <p>Unless you specify otherwise, a configuration change (such as a change 453 * in screen orientation, language, input devices, etc) will cause your 454 * current activity to be <em>destroyed</em>, going through the normal activity 455 * lifecycle process of {@link #onPause}, 456 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 457 * had been in the foreground or visible to the user, once {@link #onDestroy} is 458 * called in that instance then a new instance of the activity will be 459 * created, with whatever savedInstanceState the previous instance had generated 460 * from {@link #onSaveInstanceState}.</p> 461 * 462 * <p>This is done because any application resource, 463 * including layout files, can change based on any configuration value. Thus 464 * the only safe way to handle a configuration change is to re-retrieve all 465 * resources, including layouts, drawables, and strings. Because activities 466 * must already know how to save their state and re-create themselves from 467 * that state, this is a convenient way to have an activity restart itself 468 * with a new configuration.</p> 469 * 470 * <p>In some special cases, you may want to bypass restarting of your 471 * activity based on one or more types of configuration changes. This is 472 * done with the {@link android.R.attr#configChanges android:configChanges} 473 * attribute in its manifest. For any types of configuration changes you say 474 * that you handle there, you will receive a call to your current activity's 475 * {@link #onConfigurationChanged} method instead of being restarted. If 476 * a configuration change involves any that you do not handle, however, the 477 * activity will still be restarted and {@link #onConfigurationChanged} 478 * will not be called.</p> 479 * 480 * <a name="StartingActivities"></a> 481 * <h3>Starting Activities and Getting Results</h3> 482 * 483 * <p>The {@link android.app.Activity#startActivity} 484 * method is used to start a 485 * new activity, which will be placed at the top of the activity stack. It 486 * takes a single argument, an {@link android.content.Intent Intent}, 487 * which describes the activity 488 * to be executed.</p> 489 * 490 * <p>Sometimes you want to get a result back from an activity when it 491 * ends. For example, you may start an activity that lets the user pick 492 * a person in a list of contacts; when it ends, it returns the person 493 * that was selected. To do this, you call the 494 * {@link android.app.Activity#startActivityForResult(Intent, int)} 495 * version with a second integer parameter identifying the call. The result 496 * will come back through your {@link android.app.Activity#onActivityResult} 497 * method.</p> 498 * 499 * <p>When an activity exits, it can call 500 * {@link android.app.Activity#setResult(int)} 501 * to return data back to its parent. It must always supply a result code, 502 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 503 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 504 * return back an Intent containing any additional data it wants. All of this 505 * information appears back on the 506 * parent's <code>Activity.onActivityResult()</code>, along with the integer 507 * identifier it originally supplied.</p> 508 * 509 * <p>If a child activity fails for any reason (such as crashing), the parent 510 * activity will receive a result with the code RESULT_CANCELED.</p> 511 * 512 * <pre class="prettyprint"> 513 * public class MyActivity extends Activity { 514 * ... 515 * 516 * static final int PICK_CONTACT_REQUEST = 0; 517 * 518 * public boolean onKeyDown(int keyCode, KeyEvent event) { 519 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 520 * // When the user center presses, let them pick a contact. 521 * startActivityForResult( 522 * new Intent(Intent.ACTION_PICK, 523 * new Uri("content://contacts")), 524 * PICK_CONTACT_REQUEST); 525 * return true; 526 * } 527 * return false; 528 * } 529 * 530 * protected void onActivityResult(int requestCode, int resultCode, 531 * Intent data) { 532 * if (requestCode == PICK_CONTACT_REQUEST) { 533 * if (resultCode == RESULT_OK) { 534 * // A contact was picked. Here we will just display it 535 * // to the user. 536 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 537 * } 538 * } 539 * } 540 * } 541 * </pre> 542 * 543 * <a name="SavingPersistentState"></a> 544 * <h3>Saving Persistent State</h3> 545 * 546 * <p>There are generally two kinds of persistent state than an activity 547 * will deal with: shared document-like data (typically stored in a SQLite 548 * database using a {@linkplain android.content.ContentProvider content provider}) 549 * and internal state such as user preferences.</p> 550 * 551 * <p>For content provider data, we suggest that activities use a 552 * "edit in place" user model. That is, any edits a user makes are effectively 553 * made immediately without requiring an additional confirmation step. 554 * Supporting this model is generally a simple matter of following two rules:</p> 555 * 556 * <ul> 557 * <li> <p>When creating a new document, the backing database entry or file for 558 * it is created immediately. For example, if the user chooses to write 559 * a new email, a new entry for that email is created as soon as they 560 * start entering data, so that if they go to any other activity after 561 * that point this email will now appear in the list of drafts.</p> 562 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 563 * commit to the backing content provider or file any changes the user 564 * has made. This ensures that those changes will be seen by any other 565 * activity that is about to run. You will probably want to commit 566 * your data even more aggressively at key times during your 567 * activity's lifecycle: for example before starting a new 568 * activity, before finishing your own activity, when the user 569 * switches between input fields, etc.</p> 570 * </ul> 571 * 572 * <p>This model is designed to prevent data loss when a user is navigating 573 * between activities, and allows the system to safely kill an activity (because 574 * system resources are needed somewhere else) at any time after it has been 575 * paused. Note this implies 576 * that the user pressing BACK from your activity does <em>not</em> 577 * mean "cancel" -- it means to leave the activity with its current contents 578 * saved away. Canceling edits in an activity must be provided through 579 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 580 * 581 * <p>See the {@linkplain android.content.ContentProvider content package} for 582 * more information about content providers. These are a key aspect of how 583 * different activities invoke and propagate data between themselves.</p> 584 * 585 * <p>The Activity class also provides an API for managing internal persistent state 586 * associated with an activity. This can be used, for example, to remember 587 * the user's preferred initial display in a calendar (day view or week view) 588 * or the user's default home page in a web browser.</p> 589 * 590 * <p>Activity persistent state is managed 591 * with the method {@link #getPreferences}, 592 * allowing you to retrieve and 593 * modify a set of name/value pairs associated with the activity. To use 594 * preferences that are shared across multiple application components 595 * (activities, receivers, services, providers), you can use the underlying 596 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 597 * to retrieve a preferences 598 * object stored under a specific name. 599 * (Note that it is not possible to share settings data across application 600 * packages -- for that you will need a content provider.)</p> 601 * 602 * <p>Here is an excerpt from a calendar activity that stores the user's 603 * preferred view mode in its persistent settings:</p> 604 * 605 * <pre class="prettyprint"> 606 * public class CalendarActivity extends Activity { 607 * ... 608 * 609 * static final int DAY_VIEW_MODE = 0; 610 * static final int WEEK_VIEW_MODE = 1; 611 * 612 * private SharedPreferences mPrefs; 613 * private int mCurViewMode; 614 * 615 * protected void onCreate(Bundle savedInstanceState) { 616 * super.onCreate(savedInstanceState); 617 * 618 * SharedPreferences mPrefs = getSharedPreferences(); 619 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 620 * } 621 * 622 * protected void onPause() { 623 * super.onPause(); 624 * 625 * SharedPreferences.Editor ed = mPrefs.edit(); 626 * ed.putInt("view_mode", mCurViewMode); 627 * ed.commit(); 628 * } 629 * } 630 * </pre> 631 * 632 * <a name="Permissions"></a> 633 * <h3>Permissions</h3> 634 * 635 * <p>The ability to start a particular Activity can be enforced when it is 636 * declared in its 637 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 638 * tag. By doing so, other applications will need to declare a corresponding 639 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 640 * element in their own manifest to be able to start that activity. 641 * 642 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 643 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 644 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 645 * Activity access to the specific URIs in the Intent. Access will remain 646 * until the Activity has finished (it will remain across the hosting 647 * process being killed and other temporary destruction). As of 648 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 649 * was already created and a new Intent is being delivered to 650 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 651 * to the existing ones it holds. 652 * 653 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 654 * document for more information on permissions and security in general. 655 * 656 * <a name="ProcessLifecycle"></a> 657 * <h3>Process Lifecycle</h3> 658 * 659 * <p>The Android system attempts to keep application process around for as 660 * long as possible, but eventually will need to remove old processes when 661 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 662 * Lifecycle</a>, the decision about which process to remove is intimately 663 * tied to the state of the user's interaction with it. In general, there 664 * are four states a process can be in based on the activities running in it, 665 * listed here in order of importance. The system will kill less important 666 * processes (the last ones) before it resorts to killing more important 667 * processes (the first ones). 668 * 669 * <ol> 670 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 671 * that the user is currently interacting with) is considered the most important. 672 * Its process will only be killed as a last resort, if it uses more memory 673 * than is available on the device. Generally at this point the device has 674 * reached a memory paging state, so this is required in order to keep the user 675 * interface responsive. 676 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 677 * but not in the foreground, such as one sitting behind a foreground dialog) 678 * is considered extremely important and will not be killed unless that is 679 * required to keep the foreground activity running. 680 * <li> <p>A <b>background activity</b> (an activity that is not visible to 681 * the user and has been paused) is no longer critical, so the system may 682 * safely kill its process to reclaim memory for other foreground or 683 * visible processes. If its process needs to be killed, when the user navigates 684 * back to the activity (making it visible on the screen again), its 685 * {@link #onCreate} method will be called with the savedInstanceState it had previously 686 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 687 * state as the user last left it. 688 * <li> <p>An <b>empty process</b> is one hosting no activities or other 689 * application components (such as {@link Service} or 690 * {@link android.content.BroadcastReceiver} classes). These are killed very 691 * quickly by the system as memory becomes low. For this reason, any 692 * background operation you do outside of an activity must be executed in the 693 * context of an activity BroadcastReceiver or Service to ensure that the system 694 * knows it needs to keep your process around. 695 * </ol> 696 * 697 * <p>Sometimes an Activity may need to do a long-running operation that exists 698 * independently of the activity lifecycle itself. An example may be a camera 699 * application that allows you to upload a picture to a web site. The upload 700 * may take a long time, and the application should allow the user to leave 701 * the application while it is executing. To accomplish this, your Activity 702 * should start a {@link Service} in which the upload takes place. This allows 703 * the system to properly prioritize your process (considering it to be more 704 * important than other non-visible applications) for the duration of the 705 * upload, independent of whether the original activity is paused, stopped, 706 * or finished. 707 */ 708public class Activity extends ContextThemeWrapper 709 implements LayoutInflater.Factory2, 710 Window.Callback, KeyEvent.Callback, 711 OnCreateContextMenuListener, ComponentCallbacks2, 712 Window.OnWindowDismissedCallback, WindowControllerCallback, 713 AutofillManager.AutofillClient { 714 private static final String TAG = "Activity"; 715 private static final boolean DEBUG_LIFECYCLE = false; 716 717 /** Standard activity result: operation canceled. */ 718 public static final int RESULT_CANCELED = 0; 719 /** Standard activity result: operation succeeded. */ 720 public static final int RESULT_OK = -1; 721 /** Start of user-defined activity results. */ 722 public static final int RESULT_FIRST_USER = 1; 723 724 /** @hide Task isn't finished when activity is finished */ 725 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 726 /** 727 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 728 * past behavior the task is also removed from recents. 729 */ 730 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 731 /** 732 * @hide Task is finished along with the finishing activity, but it is not removed from 733 * recents. 734 */ 735 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 736 737 static final String FRAGMENTS_TAG = "android:fragments"; 738 private static final String LAST_AUTOFILL_ID = "android:lastAutofillId"; 739 740 private static final String AUTOFILL_RESET_NEEDED = "@android:autofillResetNeeded"; 741 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 742 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 743 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 744 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 745 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 746 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 747 "android:hasCurrentPermissionsRequest"; 748 749 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 750 private static final String AUTO_FILL_AUTH_WHO_PREFIX = "@android:autoFillAuth:"; 751 752 private static final String KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME = "com.android.systemui"; 753 754 private static final int LOG_AM_ON_CREATE_CALLED = 30057; 755 private static final int LOG_AM_ON_START_CALLED = 30059; 756 private static final int LOG_AM_ON_RESUME_CALLED = 30022; 757 private static final int LOG_AM_ON_PAUSE_CALLED = 30021; 758 private static final int LOG_AM_ON_STOP_CALLED = 30049; 759 private static final int LOG_AM_ON_RESTART_CALLED = 30058; 760 private static final int LOG_AM_ON_DESTROY_CALLED = 30060; 761 762 private static class ManagedDialog { 763 Dialog mDialog; 764 Bundle mArgs; 765 } 766 private SparseArray<ManagedDialog> mManagedDialogs; 767 768 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 769 private Instrumentation mInstrumentation; 770 private IBinder mToken; 771 private int mIdent; 772 /*package*/ String mEmbeddedID; 773 private Application mApplication; 774 /*package*/ Intent mIntent; 775 /*package*/ String mReferrer; 776 private ComponentName mComponent; 777 /*package*/ ActivityInfo mActivityInfo; 778 /*package*/ ActivityThread mMainThread; 779 Activity mParent; 780 boolean mCalled; 781 /*package*/ boolean mResumed; 782 /*package*/ boolean mStopped; 783 boolean mFinished; 784 boolean mStartedActivity; 785 private boolean mDestroyed; 786 private boolean mDoReportFullyDrawn = true; 787 private boolean mRestoredFromBundle; 788 789 /** {@code true} if the activity lifecycle is in a state which supports picture-in-picture. 790 * This only affects the client-side exception, the actual state check still happens in AMS. */ 791 private boolean mCanEnterPictureInPicture = false; 792 /** true if the activity is going through a transient pause */ 793 /*package*/ boolean mTemporaryPause = false; 794 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 795 /*package*/ boolean mChangingConfigurations = false; 796 /*package*/ int mConfigChangeFlags; 797 /*package*/ Configuration mCurrentConfig; 798 private SearchManager mSearchManager; 799 private MenuInflater mMenuInflater; 800 801 /** The autofill manager. Always access via {@link #getAutofillManager()}. */ 802 @Nullable private AutofillManager mAutofillManager; 803 804 static final class NonConfigurationInstances { 805 Object activity; 806 HashMap<String, Object> children; 807 FragmentManagerNonConfig fragments; 808 ArrayMap<String, LoaderManager> loaders; 809 VoiceInteractor voiceInteractor; 810 } 811 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 812 813 private Window mWindow; 814 815 private WindowManager mWindowManager; 816 /*package*/ View mDecor = null; 817 /*package*/ boolean mWindowAdded = false; 818 /*package*/ boolean mVisibleFromServer = false; 819 /*package*/ boolean mVisibleFromClient = true; 820 /*package*/ ActionBar mActionBar = null; 821 private boolean mEnableDefaultActionBarUp; 822 823 private VoiceInteractor mVoiceInteractor; 824 825 private CharSequence mTitle; 826 private int mTitleColor = 0; 827 828 // we must have a handler before the FragmentController is constructed 829 final Handler mHandler = new Handler(); 830 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 831 832 private static final class ManagedCursor { 833 ManagedCursor(Cursor cursor) { 834 mCursor = cursor; 835 mReleased = false; 836 mUpdated = false; 837 } 838 839 private final Cursor mCursor; 840 private boolean mReleased; 841 private boolean mUpdated; 842 } 843 844 @GuardedBy("mManagedCursors") 845 private final ArrayList<ManagedCursor> mManagedCursors = new ArrayList<>(); 846 847 @GuardedBy("this") 848 int mResultCode = RESULT_CANCELED; 849 @GuardedBy("this") 850 Intent mResultData = null; 851 852 private TranslucentConversionListener mTranslucentCallback; 853 private boolean mChangeCanvasToTranslucent; 854 855 private SearchEvent mSearchEvent; 856 857 private boolean mTitleReady = false; 858 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 859 860 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 861 private SpannableStringBuilder mDefaultKeySsb = null; 862 863 private ActivityManager.TaskDescription mTaskDescription = 864 new ActivityManager.TaskDescription(); 865 866 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 867 868 @SuppressWarnings("unused") 869 private final Object mInstanceTracker = StrictMode.trackActivity(this); 870 871 private Thread mUiThread; 872 873 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 874 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 875 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 876 877 private boolean mHasCurrentPermissionsRequest; 878 879 private boolean mAutoFillResetNeeded; 880 private boolean mAutoFillIgnoreFirstResumePause; 881 882 /** The last autofill id that was returned from {@link #getNextAutofillId()} */ 883 private int mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 884 885 private AutofillPopupWindow mAutofillPopupWindow; 886 887 private static native String getDlWarning(); 888 889 /** Return the intent that started this activity. */ 890 public Intent getIntent() { 891 return mIntent; 892 } 893 894 /** 895 * Change the intent returned by {@link #getIntent}. This holds a 896 * reference to the given intent; it does not copy it. Often used in 897 * conjunction with {@link #onNewIntent}. 898 * 899 * @param newIntent The new Intent object to return from getIntent 900 * 901 * @see #getIntent 902 * @see #onNewIntent 903 */ 904 public void setIntent(Intent newIntent) { 905 mIntent = newIntent; 906 } 907 908 /** Return the application that owns this activity. */ 909 public final Application getApplication() { 910 return mApplication; 911 } 912 913 /** Is this activity embedded inside of another activity? */ 914 public final boolean isChild() { 915 return mParent != null; 916 } 917 918 /** Return the parent activity if this view is an embedded child. */ 919 public final Activity getParent() { 920 return mParent; 921 } 922 923 /** Retrieve the window manager for showing custom windows. */ 924 public WindowManager getWindowManager() { 925 return mWindowManager; 926 } 927 928 /** 929 * Retrieve the current {@link android.view.Window} for the activity. 930 * This can be used to directly access parts of the Window API that 931 * are not available through Activity/Screen. 932 * 933 * @return Window The current window, or null if the activity is not 934 * visual. 935 */ 936 public Window getWindow() { 937 return mWindow; 938 } 939 940 /** 941 * Return the LoaderManager for this activity, creating it if needed. 942 * 943 * @deprecated Use {@link android.support.v4.app.FragmentActivity#getSupportLoaderManager()} 944 */ 945 @Deprecated 946 public LoaderManager getLoaderManager() { 947 return mFragments.getLoaderManager(); 948 } 949 950 /** 951 * Calls {@link android.view.Window#getCurrentFocus} on the 952 * Window of this Activity to return the currently focused view. 953 * 954 * @return View The current View with focus or null. 955 * 956 * @see #getWindow 957 * @see android.view.Window#getCurrentFocus 958 */ 959 @Nullable 960 public View getCurrentFocus() { 961 return mWindow != null ? mWindow.getCurrentFocus() : null; 962 } 963 964 /** 965 * (Create and) return the autofill manager 966 * 967 * @return The autofill manager 968 */ 969 @NonNull private AutofillManager getAutofillManager() { 970 if (mAutofillManager == null) { 971 mAutofillManager = getSystemService(AutofillManager.class); 972 } 973 974 return mAutofillManager; 975 } 976 977 @Override 978 protected void attachBaseContext(Context newBase) { 979 super.attachBaseContext(newBase); 980 newBase.setAutofillClient(this); 981 } 982 983 /** @hide */ 984 @Override 985 public final AutofillClient getAutofillClient() { 986 return this; 987 } 988 989 /** 990 * Called when the activity is starting. This is where most initialization 991 * should go: calling {@link #setContentView(int)} to inflate the 992 * activity's UI, using {@link #findViewById} to programmatically interact 993 * with widgets in the UI, calling 994 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 995 * cursors for data being displayed, etc. 996 * 997 * <p>You can call {@link #finish} from within this function, in 998 * which case onDestroy() will be immediately called without any of the rest 999 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 1000 * {@link #onPause}, etc) executing. 1001 * 1002 * <p><em>Derived classes must call through to the super class's 1003 * implementation of this method. If they do not, an exception will be 1004 * thrown.</em></p> 1005 * 1006 * @param savedInstanceState If the activity is being re-initialized after 1007 * previously being shut down then this Bundle contains the data it most 1008 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1009 * 1010 * @see #onStart 1011 * @see #onSaveInstanceState 1012 * @see #onRestoreInstanceState 1013 * @see #onPostCreate 1014 */ 1015 @MainThread 1016 @CallSuper 1017 protected void onCreate(@Nullable Bundle savedInstanceState) { 1018 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 1019 1020 if (mLastNonConfigurationInstances != null) { 1021 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 1022 } 1023 if (mActivityInfo.parentActivityName != null) { 1024 if (mActionBar == null) { 1025 mEnableDefaultActionBarUp = true; 1026 } else { 1027 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 1028 } 1029 } 1030 if (savedInstanceState != null) { 1031 mAutoFillResetNeeded = savedInstanceState.getBoolean(AUTOFILL_RESET_NEEDED, false); 1032 mLastAutofillId = savedInstanceState.getInt(LAST_AUTOFILL_ID, 1033 View.LAST_APP_AUTOFILL_ID); 1034 1035 if (mAutoFillResetNeeded) { 1036 getAutofillManager().onCreate(savedInstanceState); 1037 } 1038 1039 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 1040 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 1041 ? mLastNonConfigurationInstances.fragments : null); 1042 } 1043 mFragments.dispatchCreate(); 1044 getApplication().dispatchActivityCreated(this, savedInstanceState); 1045 if (mVoiceInteractor != null) { 1046 mVoiceInteractor.attachActivity(this); 1047 } 1048 mRestoredFromBundle = savedInstanceState != null; 1049 mCalled = true; 1050 } 1051 1052 /** 1053 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 1054 * the attribute {@link android.R.attr#persistableMode} set to 1055 * <code>persistAcrossReboots</code>. 1056 * 1057 * @param savedInstanceState if the activity is being re-initialized after 1058 * previously being shut down then this Bundle contains the data it most 1059 * recently supplied in {@link #onSaveInstanceState}. 1060 * <b><i>Note: Otherwise it is null.</i></b> 1061 * @param persistentState if the activity is being re-initialized after 1062 * previously being shut down or powered off then this Bundle contains the data it most 1063 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 1064 * <b><i>Note: Otherwise it is null.</i></b> 1065 * 1066 * @see #onCreate(android.os.Bundle) 1067 * @see #onStart 1068 * @see #onSaveInstanceState 1069 * @see #onRestoreInstanceState 1070 * @see #onPostCreate 1071 */ 1072 public void onCreate(@Nullable Bundle savedInstanceState, 1073 @Nullable PersistableBundle persistentState) { 1074 onCreate(savedInstanceState); 1075 } 1076 1077 /** 1078 * The hook for {@link ActivityThread} to restore the state of this activity. 1079 * 1080 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1081 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1082 * 1083 * @param savedInstanceState contains the saved state 1084 */ 1085 final void performRestoreInstanceState(Bundle savedInstanceState) { 1086 onRestoreInstanceState(savedInstanceState); 1087 restoreManagedDialogs(savedInstanceState); 1088 } 1089 1090 /** 1091 * The hook for {@link ActivityThread} to restore the state of this activity. 1092 * 1093 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1094 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1095 * 1096 * @param savedInstanceState contains the saved state 1097 * @param persistentState contains the persistable saved state 1098 */ 1099 final void performRestoreInstanceState(Bundle savedInstanceState, 1100 PersistableBundle persistentState) { 1101 onRestoreInstanceState(savedInstanceState, persistentState); 1102 if (savedInstanceState != null) { 1103 restoreManagedDialogs(savedInstanceState); 1104 } 1105 } 1106 1107 /** 1108 * This method is called after {@link #onStart} when the activity is 1109 * being re-initialized from a previously saved state, given here in 1110 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1111 * to restore their state, but it is sometimes convenient to do it here 1112 * after all of the initialization has been done or to allow subclasses to 1113 * decide whether to use your default implementation. The default 1114 * implementation of this method performs a restore of any view state that 1115 * had previously been frozen by {@link #onSaveInstanceState}. 1116 * 1117 * <p>This method is called between {@link #onStart} and 1118 * {@link #onPostCreate}. 1119 * 1120 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1121 * 1122 * @see #onCreate 1123 * @see #onPostCreate 1124 * @see #onResume 1125 * @see #onSaveInstanceState 1126 */ 1127 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1128 if (mWindow != null) { 1129 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1130 if (windowState != null) { 1131 mWindow.restoreHierarchyState(windowState); 1132 } 1133 } 1134 } 1135 1136 /** 1137 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1138 * created with the attribute {@link android.R.attr#persistableMode} set to 1139 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1140 * came from the restored PersistableBundle first 1141 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1142 * 1143 * <p>This method is called between {@link #onStart} and 1144 * {@link #onPostCreate}. 1145 * 1146 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1147 * 1148 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1149 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1150 * 1151 * @see #onRestoreInstanceState(Bundle) 1152 * @see #onCreate 1153 * @see #onPostCreate 1154 * @see #onResume 1155 * @see #onSaveInstanceState 1156 */ 1157 public void onRestoreInstanceState(Bundle savedInstanceState, 1158 PersistableBundle persistentState) { 1159 if (savedInstanceState != null) { 1160 onRestoreInstanceState(savedInstanceState); 1161 } 1162 } 1163 1164 /** 1165 * Restore the state of any saved managed dialogs. 1166 * 1167 * @param savedInstanceState The bundle to restore from. 1168 */ 1169 private void restoreManagedDialogs(Bundle savedInstanceState) { 1170 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1171 if (b == null) { 1172 return; 1173 } 1174 1175 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1176 final int numDialogs = ids.length; 1177 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1178 for (int i = 0; i < numDialogs; i++) { 1179 final Integer dialogId = ids[i]; 1180 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1181 if (dialogState != null) { 1182 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1183 // so tell createDialog() not to do it, otherwise we get an exception 1184 final ManagedDialog md = new ManagedDialog(); 1185 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1186 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1187 if (md.mDialog != null) { 1188 mManagedDialogs.put(dialogId, md); 1189 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1190 md.mDialog.onRestoreInstanceState(dialogState); 1191 } 1192 } 1193 } 1194 } 1195 1196 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1197 final Dialog dialog = onCreateDialog(dialogId, args); 1198 if (dialog == null) { 1199 return null; 1200 } 1201 dialog.dispatchOnCreate(state); 1202 return dialog; 1203 } 1204 1205 private static String savedDialogKeyFor(int key) { 1206 return SAVED_DIALOG_KEY_PREFIX + key; 1207 } 1208 1209 private static String savedDialogArgsKeyFor(int key) { 1210 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1211 } 1212 1213 /** 1214 * Called when activity start-up is complete (after {@link #onStart} 1215 * and {@link #onRestoreInstanceState} have been called). Applications will 1216 * generally not implement this method; it is intended for system 1217 * classes to do final initialization after application code has run. 1218 * 1219 * <p><em>Derived classes must call through to the super class's 1220 * implementation of this method. If they do not, an exception will be 1221 * thrown.</em></p> 1222 * 1223 * @param savedInstanceState If the activity is being re-initialized after 1224 * previously being shut down then this Bundle contains the data it most 1225 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1226 * @see #onCreate 1227 */ 1228 @CallSuper 1229 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1230 if (!isChild()) { 1231 mTitleReady = true; 1232 onTitleChanged(getTitle(), getTitleColor()); 1233 } 1234 1235 mCalled = true; 1236 } 1237 1238 /** 1239 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1240 * created with the attribute {@link android.R.attr#persistableMode} set to 1241 * <code>persistAcrossReboots</code>. 1242 * 1243 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1244 * @param persistentState The data caming from the PersistableBundle first 1245 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1246 * 1247 * @see #onCreate 1248 */ 1249 public void onPostCreate(@Nullable Bundle savedInstanceState, 1250 @Nullable PersistableBundle persistentState) { 1251 onPostCreate(savedInstanceState); 1252 } 1253 1254 /** 1255 * Called after {@link #onCreate} — or after {@link #onRestart} when 1256 * the activity had been stopped, but is now again being displayed to the 1257 * user. It will be followed by {@link #onResume}. 1258 * 1259 * <p><em>Derived classes must call through to the super class's 1260 * implementation of this method. If they do not, an exception will be 1261 * thrown.</em></p> 1262 * 1263 * @see #onCreate 1264 * @see #onStop 1265 * @see #onResume 1266 */ 1267 @CallSuper 1268 protected void onStart() { 1269 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1270 mCalled = true; 1271 1272 mFragments.doLoaderStart(); 1273 1274 getApplication().dispatchActivityStarted(this); 1275 1276 if (mAutoFillResetNeeded) { 1277 getAutofillManager().onVisibleForAutofill(); 1278 } 1279 } 1280 1281 /** 1282 * Called after {@link #onStop} when the current activity is being 1283 * re-displayed to the user (the user has navigated back to it). It will 1284 * be followed by {@link #onStart} and then {@link #onResume}. 1285 * 1286 * <p>For activities that are using raw {@link Cursor} objects (instead of 1287 * creating them through 1288 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1289 * this is usually the place 1290 * where the cursor should be requeried (because you had deactivated it in 1291 * {@link #onStop}. 1292 * 1293 * <p><em>Derived classes must call through to the super class's 1294 * implementation of this method. If they do not, an exception will be 1295 * thrown.</em></p> 1296 * 1297 * @see #onStop 1298 * @see #onStart 1299 * @see #onResume 1300 */ 1301 @CallSuper 1302 protected void onRestart() { 1303 mCalled = true; 1304 } 1305 1306 /** 1307 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1308 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1309 * to give the activity a hint that its state is no longer saved -- it will generally 1310 * be called after {@link #onSaveInstanceState} and prior to the activity being 1311 * resumed/started again. 1312 */ 1313 public void onStateNotSaved() { 1314 } 1315 1316 /** 1317 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1318 * {@link #onPause}, for your activity to start interacting with the user. 1319 * This is a good place to begin animations, open exclusive-access devices 1320 * (such as the camera), etc. 1321 * 1322 * <p>Keep in mind that onResume is not the best indicator that your activity 1323 * is visible to the user; a system window such as the keyguard may be in 1324 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1325 * activity is visible to the user (for example, to resume a game). 1326 * 1327 * <p><em>Derived classes must call through to the super class's 1328 * implementation of this method. If they do not, an exception will be 1329 * thrown.</em></p> 1330 * 1331 * @see #onRestoreInstanceState 1332 * @see #onRestart 1333 * @see #onPostResume 1334 * @see #onPause 1335 */ 1336 @CallSuper 1337 protected void onResume() { 1338 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1339 getApplication().dispatchActivityResumed(this); 1340 mActivityTransitionState.onResume(this, isTopOfTask()); 1341 if (mAutoFillResetNeeded) { 1342 if (!mAutoFillIgnoreFirstResumePause) { 1343 View focus = getCurrentFocus(); 1344 if (focus != null && focus.canNotifyAutofillEnterExitEvent()) { 1345 // TODO: in Activity killed/recreated case, i.e. SessionLifecycleTest# 1346 // testDatasetVisibleWhileAutofilledAppIsLifecycled: the View's initial 1347 // window visibility after recreation is INVISIBLE in onResume() and next frame 1348 // ViewRootImpl.performTraversals() changes window visibility to VISIBLE. 1349 // So we cannot call View.notifyEnterOrExited() which will do nothing 1350 // when View.isVisibleToUser() is false. 1351 getAutofillManager().notifyViewEntered(focus); 1352 } 1353 } 1354 } 1355 mCalled = true; 1356 } 1357 1358 /** 1359 * Called when activity resume is complete (after {@link #onResume} has 1360 * been called). Applications will generally not implement this method; 1361 * it is intended for system classes to do final setup after application 1362 * resume code has run. 1363 * 1364 * <p><em>Derived classes must call through to the super class's 1365 * implementation of this method. If they do not, an exception will be 1366 * thrown.</em></p> 1367 * 1368 * @see #onResume 1369 */ 1370 @CallSuper 1371 protected void onPostResume() { 1372 final Window win = getWindow(); 1373 if (win != null) win.makeActive(); 1374 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1375 mCalled = true; 1376 } 1377 1378 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1379 if (mVoiceInteractor != null) { 1380 for (Request activeRequest: mVoiceInteractor.getActiveRequests()) { 1381 activeRequest.cancel(); 1382 activeRequest.clear(); 1383 } 1384 } 1385 if (voiceInteractor == null) { 1386 mVoiceInteractor = null; 1387 } else { 1388 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1389 Looper.myLooper()); 1390 } 1391 } 1392 1393 /** 1394 * Gets the next autofill ID. 1395 * 1396 * <p>All IDs will be bigger than {@link View#LAST_APP_AUTOFILL_ID}. All IDs returned 1397 * will be unique. 1398 * 1399 * @return A ID that is unique in the activity 1400 * 1401 * {@hide} 1402 */ 1403 public int getNextAutofillId() { 1404 if (mLastAutofillId == Integer.MAX_VALUE - 1) { 1405 mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 1406 } 1407 1408 mLastAutofillId++; 1409 1410 return mLastAutofillId; 1411 } 1412 1413 /** 1414 * Check whether this activity is running as part of a voice interaction with the user. 1415 * If true, it should perform its interaction with the user through the 1416 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1417 */ 1418 public boolean isVoiceInteraction() { 1419 return mVoiceInteractor != null; 1420 } 1421 1422 /** 1423 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1424 * of a voice interaction. That is, returns true if this activity was directly 1425 * started by the voice interaction service as the initiation of a voice interaction. 1426 * Otherwise, for example if it was started by another activity while under voice 1427 * interaction, returns false. 1428 */ 1429 public boolean isVoiceInteractionRoot() { 1430 try { 1431 return mVoiceInteractor != null 1432 && ActivityManager.getService().isRootVoiceInteraction(mToken); 1433 } catch (RemoteException e) { 1434 } 1435 return false; 1436 } 1437 1438 /** 1439 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1440 * interact with this activity. 1441 */ 1442 public VoiceInteractor getVoiceInteractor() { 1443 return mVoiceInteractor; 1444 } 1445 1446 /** 1447 * Queries whether the currently enabled voice interaction service supports returning 1448 * a voice interactor for use by the activity. This is valid only for the duration of the 1449 * activity. 1450 * 1451 * @return whether the current voice interaction service supports local voice interaction 1452 */ 1453 public boolean isLocalVoiceInteractionSupported() { 1454 try { 1455 return ActivityManager.getService().supportsLocalVoiceInteraction(); 1456 } catch (RemoteException re) { 1457 } 1458 return false; 1459 } 1460 1461 /** 1462 * Starts a local voice interaction session. When ready, 1463 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1464 * to the registered voice interaction service. 1465 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1466 */ 1467 public void startLocalVoiceInteraction(Bundle privateOptions) { 1468 try { 1469 ActivityManager.getService().startLocalVoiceInteraction(mToken, privateOptions); 1470 } catch (RemoteException re) { 1471 } 1472 } 1473 1474 /** 1475 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1476 * voice interaction session being started. You can now retrieve a voice interactor using 1477 * {@link #getVoiceInteractor()}. 1478 */ 1479 public void onLocalVoiceInteractionStarted() { 1480 } 1481 1482 /** 1483 * Callback to indicate that the local voice interaction has stopped either 1484 * because it was requested through a call to {@link #stopLocalVoiceInteraction()} 1485 * or because it was canceled by the user. The previously acquired {@link VoiceInteractor} 1486 * is no longer valid after this. 1487 */ 1488 public void onLocalVoiceInteractionStopped() { 1489 } 1490 1491 /** 1492 * Request to terminate the current voice interaction that was previously started 1493 * using {@link #startLocalVoiceInteraction(Bundle)}. When the interaction is 1494 * terminated, {@link #onLocalVoiceInteractionStopped()} will be called. 1495 */ 1496 public void stopLocalVoiceInteraction() { 1497 try { 1498 ActivityManager.getService().stopLocalVoiceInteraction(mToken); 1499 } catch (RemoteException re) { 1500 } 1501 } 1502 1503 /** 1504 * This is called for activities that set launchMode to "singleTop" in 1505 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1506 * flag when calling {@link #startActivity}. In either case, when the 1507 * activity is re-launched while at the top of the activity stack instead 1508 * of a new instance of the activity being started, onNewIntent() will be 1509 * called on the existing instance with the Intent that was used to 1510 * re-launch it. 1511 * 1512 * <p>An activity will always be paused before receiving a new intent, so 1513 * you can count on {@link #onResume} being called after this method. 1514 * 1515 * <p>Note that {@link #getIntent} still returns the original Intent. You 1516 * can use {@link #setIntent} to update it to this new Intent. 1517 * 1518 * @param intent The new intent that was started for the activity. 1519 * 1520 * @see #getIntent 1521 * @see #setIntent 1522 * @see #onResume 1523 */ 1524 protected void onNewIntent(Intent intent) { 1525 } 1526 1527 /** 1528 * The hook for {@link ActivityThread} to save the state of this activity. 1529 * 1530 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1531 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1532 * 1533 * @param outState The bundle to save the state to. 1534 */ 1535 final void performSaveInstanceState(Bundle outState) { 1536 onSaveInstanceState(outState); 1537 saveManagedDialogs(outState); 1538 mActivityTransitionState.saveState(outState); 1539 storeHasCurrentPermissionRequest(outState); 1540 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1541 } 1542 1543 /** 1544 * The hook for {@link ActivityThread} to save the state of this activity. 1545 * 1546 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1547 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1548 * 1549 * @param outState The bundle to save the state to. 1550 * @param outPersistentState The bundle to save persistent state to. 1551 */ 1552 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1553 onSaveInstanceState(outState, outPersistentState); 1554 saveManagedDialogs(outState); 1555 storeHasCurrentPermissionRequest(outState); 1556 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1557 ", " + outPersistentState); 1558 } 1559 1560 /** 1561 * Called to retrieve per-instance state from an activity before being killed 1562 * so that the state can be restored in {@link #onCreate} or 1563 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1564 * will be passed to both). 1565 * 1566 * <p>This method is called before an activity may be killed so that when it 1567 * comes back some time in the future it can restore its state. For example, 1568 * if activity B is launched in front of activity A, and at some point activity 1569 * A is killed to reclaim resources, activity A will have a chance to save the 1570 * current state of its user interface via this method so that when the user 1571 * returns to activity A, the state of the user interface can be restored 1572 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1573 * 1574 * <p>Do not confuse this method with activity lifecycle callbacks such as 1575 * {@link #onPause}, which is always called when an activity is being placed 1576 * in the background or on its way to destruction, or {@link #onStop} which 1577 * is called before destruction. One example of when {@link #onPause} and 1578 * {@link #onStop} is called and not this method is when a user navigates back 1579 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1580 * on B because that particular instance will never be restored, so the 1581 * system avoids calling it. An example when {@link #onPause} is called and 1582 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1583 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1584 * killed during the lifetime of B since the state of the user interface of 1585 * A will stay intact. 1586 * 1587 * <p>The default implementation takes care of most of the UI per-instance 1588 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1589 * view in the hierarchy that has an id, and by saving the id of the currently 1590 * focused view (all of which is restored by the default implementation of 1591 * {@link #onRestoreInstanceState}). If you override this method to save additional 1592 * information not captured by each individual view, you will likely want to 1593 * call through to the default implementation, otherwise be prepared to save 1594 * all of the state of each view yourself. 1595 * 1596 * <p>If called, this method will occur after {@link #onStop} for applications 1597 * targeting platforms starting with {@link android.os.Build.VERSION_CODES#P}. 1598 * For applications targeting earlier platform versions this method will occur 1599 * before {@link #onStop} and there are no guarantees about whether it will 1600 * occur before or after {@link #onPause}. 1601 * 1602 * @param outState Bundle in which to place your saved state. 1603 * 1604 * @see #onCreate 1605 * @see #onRestoreInstanceState 1606 * @see #onPause 1607 */ 1608 protected void onSaveInstanceState(Bundle outState) { 1609 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1610 1611 outState.putInt(LAST_AUTOFILL_ID, mLastAutofillId); 1612 Parcelable p = mFragments.saveAllState(); 1613 if (p != null) { 1614 outState.putParcelable(FRAGMENTS_TAG, p); 1615 } 1616 if (mAutoFillResetNeeded) { 1617 outState.putBoolean(AUTOFILL_RESET_NEEDED, true); 1618 getAutofillManager().onSaveInstanceState(outState); 1619 } 1620 getApplication().dispatchActivitySaveInstanceState(this, outState); 1621 } 1622 1623 /** 1624 * This is the same as {@link #onSaveInstanceState} but is called for activities 1625 * created with the attribute {@link android.R.attr#persistableMode} set to 1626 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1627 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1628 * the first time that this activity is restarted following the next device reboot. 1629 * 1630 * @param outState Bundle in which to place your saved state. 1631 * @param outPersistentState State which will be saved across reboots. 1632 * 1633 * @see #onSaveInstanceState(Bundle) 1634 * @see #onCreate 1635 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1636 * @see #onPause 1637 */ 1638 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1639 onSaveInstanceState(outState); 1640 } 1641 1642 /** 1643 * Save the state of any managed dialogs. 1644 * 1645 * @param outState place to store the saved state. 1646 */ 1647 private void saveManagedDialogs(Bundle outState) { 1648 if (mManagedDialogs == null) { 1649 return; 1650 } 1651 1652 final int numDialogs = mManagedDialogs.size(); 1653 if (numDialogs == 0) { 1654 return; 1655 } 1656 1657 Bundle dialogState = new Bundle(); 1658 1659 int[] ids = new int[mManagedDialogs.size()]; 1660 1661 // save each dialog's bundle, gather the ids 1662 for (int i = 0; i < numDialogs; i++) { 1663 final int key = mManagedDialogs.keyAt(i); 1664 ids[i] = key; 1665 final ManagedDialog md = mManagedDialogs.valueAt(i); 1666 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1667 if (md.mArgs != null) { 1668 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1669 } 1670 } 1671 1672 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1673 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1674 } 1675 1676 1677 /** 1678 * Called as part of the activity lifecycle when an activity is going into 1679 * the background, but has not (yet) been killed. The counterpart to 1680 * {@link #onResume}. 1681 * 1682 * <p>When activity B is launched in front of activity A, this callback will 1683 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1684 * so be sure to not do anything lengthy here. 1685 * 1686 * <p>This callback is mostly used for saving any persistent state the 1687 * activity is editing, to present a "edit in place" model to the user and 1688 * making sure nothing is lost if there are not enough resources to start 1689 * the new activity without first killing this one. This is also a good 1690 * place to do things like stop animations and other things that consume a 1691 * noticeable amount of CPU in order to make the switch to the next activity 1692 * as fast as possible, or to close resources that are exclusive access 1693 * such as the camera. 1694 * 1695 * <p>In situations where the system needs more memory it may kill paused 1696 * processes to reclaim resources. Because of this, you should be sure 1697 * that all of your state is saved by the time you return from 1698 * this function. In general {@link #onSaveInstanceState} is used to save 1699 * per-instance state in the activity and this method is used to store 1700 * global persistent data (in content providers, files, etc.) 1701 * 1702 * <p>After receiving this call you will usually receive a following call 1703 * to {@link #onStop} (after the next activity has been resumed and 1704 * displayed), however in some cases there will be a direct call back to 1705 * {@link #onResume} without going through the stopped state. 1706 * 1707 * <p><em>Derived classes must call through to the super class's 1708 * implementation of this method. If they do not, an exception will be 1709 * thrown.</em></p> 1710 * 1711 * @see #onResume 1712 * @see #onSaveInstanceState 1713 * @see #onStop 1714 */ 1715 @CallSuper 1716 protected void onPause() { 1717 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1718 getApplication().dispatchActivityPaused(this); 1719 if (mAutoFillResetNeeded) { 1720 if (!mAutoFillIgnoreFirstResumePause) { 1721 if (DEBUG_LIFECYCLE) Slog.v(TAG, "autofill notifyViewExited " + this); 1722 View focus = getCurrentFocus(); 1723 if (focus != null && focus.canNotifyAutofillEnterExitEvent()) { 1724 getAutofillManager().notifyViewExited(focus); 1725 } 1726 } else { 1727 // reset after first pause() 1728 if (DEBUG_LIFECYCLE) Slog.v(TAG, "autofill got first pause " + this); 1729 mAutoFillIgnoreFirstResumePause = false; 1730 } 1731 } 1732 mCalled = true; 1733 } 1734 1735 /** 1736 * Called as part of the activity lifecycle when an activity is about to go 1737 * into the background as the result of user choice. For example, when the 1738 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1739 * when an incoming phone call causes the in-call Activity to be automatically 1740 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1741 * the activity being interrupted. In cases when it is invoked, this method 1742 * is called right before the activity's {@link #onPause} callback. 1743 * 1744 * <p>This callback and {@link #onUserInteraction} are intended to help 1745 * activities manage status bar notifications intelligently; specifically, 1746 * for helping activities determine the proper time to cancel a notification. 1747 * 1748 * @see #onUserInteraction() 1749 */ 1750 protected void onUserLeaveHint() { 1751 } 1752 1753 /** 1754 * @deprecated Method doesn't do anything and will be removed in the future. 1755 */ 1756 @Deprecated 1757 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1758 return false; 1759 } 1760 1761 /** 1762 * Generate a new description for this activity. This method is called 1763 * before stopping the activity and can, if desired, return some textual 1764 * description of its current state to be displayed to the user. 1765 * 1766 * <p>The default implementation returns null, which will cause you to 1767 * inherit the description from the previous activity. If all activities 1768 * return null, generally the label of the top activity will be used as the 1769 * description. 1770 * 1771 * @return A description of what the user is doing. It should be short and 1772 * sweet (only a few words). 1773 * 1774 * @see #onSaveInstanceState 1775 * @see #onStop 1776 */ 1777 @Nullable 1778 public CharSequence onCreateDescription() { 1779 return null; 1780 } 1781 1782 /** 1783 * This is called when the user is requesting an assist, to build a full 1784 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1785 * application. You can override this method to place into the bundle anything 1786 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1787 * of the assist Intent. 1788 * 1789 * <p>This function will be called after any global assist callbacks that had 1790 * been registered with {@link Application#registerOnProvideAssistDataListener 1791 * Application.registerOnProvideAssistDataListener}. 1792 */ 1793 public void onProvideAssistData(Bundle data) { 1794 } 1795 1796 /** 1797 * This is called when the user is requesting an assist, to provide references 1798 * to content related to the current activity. Before being called, the 1799 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1800 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1801 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1802 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1803 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1804 * 1805 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1806 * context of the activity, and fill in its ClipData with additional content of 1807 * interest that the user is currently viewing. For example, an image gallery application 1808 * that has launched in to an activity allowing the user to swipe through pictures should 1809 * modify the intent to reference the current image they are looking it; such an 1810 * application when showing a list of pictures should add a ClipData that has 1811 * references to all of the pictures currently visible on screen.</p> 1812 * 1813 * @param outContent The assist content to return. 1814 */ 1815 public void onProvideAssistContent(AssistContent outContent) { 1816 } 1817 1818 /** 1819 * Request the Keyboard Shortcuts screen to show up. This will trigger 1820 * {@link #onProvideKeyboardShortcuts} to retrieve the shortcuts for the foreground activity. 1821 */ 1822 public final void requestShowKeyboardShortcuts() { 1823 Intent intent = new Intent(Intent.ACTION_SHOW_KEYBOARD_SHORTCUTS); 1824 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1825 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1826 } 1827 1828 /** 1829 * Dismiss the Keyboard Shortcuts screen. 1830 */ 1831 public final void dismissKeyboardShortcutsHelper() { 1832 Intent intent = new Intent(Intent.ACTION_DISMISS_KEYBOARD_SHORTCUTS); 1833 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1834 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1835 } 1836 1837 @Override 1838 public void onProvideKeyboardShortcuts( 1839 List<KeyboardShortcutGroup> data, Menu menu, int deviceId) { 1840 if (menu == null) { 1841 return; 1842 } 1843 KeyboardShortcutGroup group = null; 1844 int menuSize = menu.size(); 1845 for (int i = 0; i < menuSize; ++i) { 1846 final MenuItem item = menu.getItem(i); 1847 final CharSequence title = item.getTitle(); 1848 final char alphaShortcut = item.getAlphabeticShortcut(); 1849 final int alphaModifiers = item.getAlphabeticModifiers(); 1850 if (title != null && alphaShortcut != MIN_VALUE) { 1851 if (group == null) { 1852 final int resource = mApplication.getApplicationInfo().labelRes; 1853 group = new KeyboardShortcutGroup(resource != 0 ? getString(resource) : null); 1854 } 1855 group.addItem(new KeyboardShortcutInfo( 1856 title, alphaShortcut, alphaModifiers)); 1857 } 1858 } 1859 if (group != null) { 1860 data.add(group); 1861 } 1862 } 1863 1864 /** 1865 * Ask to have the current assistant shown to the user. This only works if the calling 1866 * activity is the current foreground activity. It is the same as calling 1867 * {@link android.service.voice.VoiceInteractionService#showSession 1868 * VoiceInteractionService.showSession} and requesting all of the possible context. 1869 * The receiver will always see 1870 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1871 * @return Returns true if the assistant was successfully invoked, else false. For example 1872 * false will be returned if the caller is not the current top activity. 1873 */ 1874 public boolean showAssist(Bundle args) { 1875 try { 1876 return ActivityManager.getService().showAssistFromActivity(mToken, args); 1877 } catch (RemoteException e) { 1878 } 1879 return false; 1880 } 1881 1882 /** 1883 * Called when you are no longer visible to the user. You will next 1884 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1885 * depending on later user activity. 1886 * 1887 * <p><em>Derived classes must call through to the super class's 1888 * implementation of this method. If they do not, an exception will be 1889 * thrown.</em></p> 1890 * 1891 * @see #onRestart 1892 * @see #onResume 1893 * @see #onSaveInstanceState 1894 * @see #onDestroy 1895 */ 1896 @CallSuper 1897 protected void onStop() { 1898 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1899 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1900 mActivityTransitionState.onStop(); 1901 getApplication().dispatchActivityStopped(this); 1902 mTranslucentCallback = null; 1903 mCalled = true; 1904 1905 if (mAutoFillResetNeeded) { 1906 getAutofillManager().onInvisibleForAutofill(); 1907 } 1908 1909 if (isFinishing()) { 1910 if (mAutoFillResetNeeded) { 1911 getAutofillManager().onActivityFinishing(); 1912 } else if (mIntent != null 1913 && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 1914 // Activity was launched when user tapped a link in the Autofill Save UI - since 1915 // user launched another activity, the Save UI should not be restored when this 1916 // activity is finished. 1917 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_CANCEL, 1918 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 1919 } 1920 } 1921 } 1922 1923 /** 1924 * Perform any final cleanup before an activity is destroyed. This can 1925 * happen either because the activity is finishing (someone called 1926 * {@link #finish} on it, or because the system is temporarily destroying 1927 * this instance of the activity to save space. You can distinguish 1928 * between these two scenarios with the {@link #isFinishing} method. 1929 * 1930 * <p><em>Note: do not count on this method being called as a place for 1931 * saving data! For example, if an activity is editing data in a content 1932 * provider, those edits should be committed in either {@link #onPause} or 1933 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1934 * free resources like threads that are associated with an activity, so 1935 * that a destroyed activity does not leave such things around while the 1936 * rest of its application is still running. There are situations where 1937 * the system will simply kill the activity's hosting process without 1938 * calling this method (or any others) in it, so it should not be used to 1939 * do things that are intended to remain around after the process goes 1940 * away. 1941 * 1942 * <p><em>Derived classes must call through to the super class's 1943 * implementation of this method. If they do not, an exception will be 1944 * thrown.</em></p> 1945 * 1946 * @see #onPause 1947 * @see #onStop 1948 * @see #finish 1949 * @see #isFinishing 1950 */ 1951 @CallSuper 1952 protected void onDestroy() { 1953 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1954 mCalled = true; 1955 1956 // dismiss any dialogs we are managing. 1957 if (mManagedDialogs != null) { 1958 final int numDialogs = mManagedDialogs.size(); 1959 for (int i = 0; i < numDialogs; i++) { 1960 final ManagedDialog md = mManagedDialogs.valueAt(i); 1961 if (md.mDialog.isShowing()) { 1962 md.mDialog.dismiss(); 1963 } 1964 } 1965 mManagedDialogs = null; 1966 } 1967 1968 // close any cursors we are managing. 1969 synchronized (mManagedCursors) { 1970 int numCursors = mManagedCursors.size(); 1971 for (int i = 0; i < numCursors; i++) { 1972 ManagedCursor c = mManagedCursors.get(i); 1973 if (c != null) { 1974 c.mCursor.close(); 1975 } 1976 } 1977 mManagedCursors.clear(); 1978 } 1979 1980 // Close any open search dialog 1981 if (mSearchManager != null) { 1982 mSearchManager.stopSearch(); 1983 } 1984 1985 if (mActionBar != null) { 1986 mActionBar.onDestroy(); 1987 } 1988 1989 getApplication().dispatchActivityDestroyed(this); 1990 } 1991 1992 /** 1993 * Report to the system that your app is now fully drawn, purely for diagnostic 1994 * purposes (calling it does not impact the visible behavior of the activity). 1995 * This is only used to help instrument application launch times, so that the 1996 * app can report when it is fully in a usable state; without this, the only thing 1997 * the system itself can determine is the point at which the activity's window 1998 * is <em>first</em> drawn and displayed. To participate in app launch time 1999 * measurement, you should always call this method after first launch (when 2000 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 2001 * entirely drawn your UI and populated with all of the significant data. You 2002 * can safely call this method any time after first launch as well, in which case 2003 * it will simply be ignored. 2004 */ 2005 public void reportFullyDrawn() { 2006 if (mDoReportFullyDrawn) { 2007 mDoReportFullyDrawn = false; 2008 try { 2009 ActivityManager.getService().reportActivityFullyDrawn(mToken, mRestoredFromBundle); 2010 } catch (RemoteException e) { 2011 } 2012 } 2013 } 2014 2015 /** 2016 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 2017 * visa-versa. This method provides the same configuration that will be sent in the following 2018 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 2019 * 2020 * @see android.R.attr#resizeableActivity 2021 * 2022 * @param isInMultiWindowMode True if the activity is in multi-window mode. 2023 * @param newConfig The new configuration of the activity with the state 2024 * {@param isInMultiWindowMode}. 2025 */ 2026 public void onMultiWindowModeChanged(boolean isInMultiWindowMode, Configuration newConfig) { 2027 // Left deliberately empty. There should be no side effects if a direct 2028 // subclass of Activity does not call super. 2029 onMultiWindowModeChanged(isInMultiWindowMode); 2030 } 2031 2032 /** 2033 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 2034 * visa-versa. 2035 * 2036 * @see android.R.attr#resizeableActivity 2037 * 2038 * @param isInMultiWindowMode True if the activity is in multi-window mode. 2039 * 2040 * @deprecated Use {@link #onMultiWindowModeChanged(boolean, Configuration)} instead. 2041 */ 2042 @Deprecated 2043 public void onMultiWindowModeChanged(boolean isInMultiWindowMode) { 2044 // Left deliberately empty. There should be no side effects if a direct 2045 // subclass of Activity does not call super. 2046 } 2047 2048 /** 2049 * Returns true if the activity is currently in multi-window mode. 2050 * @see android.R.attr#resizeableActivity 2051 * 2052 * @return True if the activity is in multi-window mode. 2053 */ 2054 public boolean isInMultiWindowMode() { 2055 try { 2056 return ActivityManager.getService().isInMultiWindowMode(mToken); 2057 } catch (RemoteException e) { 2058 } 2059 return false; 2060 } 2061 2062 /** 2063 * Called by the system when the activity changes to and from picture-in-picture mode. This 2064 * method provides the same configuration that will be sent in the following 2065 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 2066 * 2067 * @see android.R.attr#supportsPictureInPicture 2068 * 2069 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2070 * @param newConfig The new configuration of the activity with the state 2071 * {@param isInPictureInPictureMode}. 2072 */ 2073 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode, 2074 Configuration newConfig) { 2075 // Left deliberately empty. There should be no side effects if a direct 2076 // subclass of Activity does not call super. 2077 onPictureInPictureModeChanged(isInPictureInPictureMode); 2078 } 2079 2080 /** 2081 * Called by the system when the activity changes to and from picture-in-picture mode. 2082 * 2083 * @see android.R.attr#supportsPictureInPicture 2084 * 2085 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2086 * 2087 * @deprecated Use {@link #onPictureInPictureModeChanged(boolean, Configuration)} instead. 2088 */ 2089 @Deprecated 2090 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 2091 // Left deliberately empty. There should be no side effects if a direct 2092 // subclass of Activity does not call super. 2093 } 2094 2095 /** 2096 * Returns true if the activity is currently in picture-in-picture mode. 2097 * @see android.R.attr#supportsPictureInPicture 2098 * 2099 * @return True if the activity is in picture-in-picture mode. 2100 */ 2101 public boolean isInPictureInPictureMode() { 2102 try { 2103 return ActivityManager.getService().isInPictureInPictureMode(mToken); 2104 } catch (RemoteException e) { 2105 } 2106 return false; 2107 } 2108 2109 /** 2110 * Puts the activity in picture-in-picture mode if possible in the current system state. Any 2111 * prior calls to {@link #setPictureInPictureParams(PictureInPictureParams)} will still apply 2112 * when entering picture-in-picture through this call. 2113 * 2114 * @see #enterPictureInPictureMode(PictureInPictureParams) 2115 * @see android.R.attr#supportsPictureInPicture 2116 */ 2117 @Deprecated 2118 public void enterPictureInPictureMode() { 2119 enterPictureInPictureMode(new PictureInPictureParams.Builder().build()); 2120 } 2121 2122 /** @removed */ 2123 @Deprecated 2124 public boolean enterPictureInPictureMode(@NonNull PictureInPictureArgs args) { 2125 return enterPictureInPictureMode(PictureInPictureArgs.convert(args)); 2126 } 2127 2128 /** 2129 * Puts the activity in picture-in-picture mode if possible in the current system state. The 2130 * set parameters in {@param params} will be combined with the parameters from prior calls to 2131 * {@link #setPictureInPictureParams(PictureInPictureParams)}. 2132 * 2133 * The system may disallow entering picture-in-picture in various cases, including when the 2134 * activity is not visible, if the screen is locked or if the user has an activity pinned. 2135 * 2136 * @see android.R.attr#supportsPictureInPicture 2137 * @see PictureInPictureParams 2138 * 2139 * @param params non-null parameters to be combined with previously set parameters when entering 2140 * picture-in-picture. 2141 * 2142 * @return true if the system successfully put this activity into picture-in-picture mode or was 2143 * already in picture-in-picture mode (@see {@link #isInPictureInPictureMode()). If the device 2144 * does not support picture-in-picture, return false. 2145 */ 2146 public boolean enterPictureInPictureMode(@NonNull PictureInPictureParams params) { 2147 try { 2148 if (!deviceSupportsPictureInPictureMode()) { 2149 return false; 2150 } 2151 if (params == null) { 2152 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2153 } 2154 if (!mCanEnterPictureInPicture) { 2155 throw new IllegalStateException("Activity must be resumed to enter" 2156 + " picture-in-picture"); 2157 } 2158 return ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken, params); 2159 } catch (RemoteException e) { 2160 return false; 2161 } 2162 } 2163 2164 /** @removed */ 2165 @Deprecated 2166 public void setPictureInPictureArgs(@NonNull PictureInPictureArgs args) { 2167 setPictureInPictureParams(PictureInPictureArgs.convert(args)); 2168 } 2169 2170 /** 2171 * Updates the properties of the picture-in-picture activity, or sets it to be used later when 2172 * {@link #enterPictureInPictureMode()} is called. 2173 * 2174 * @param params the new parameters for the picture-in-picture. 2175 */ 2176 public void setPictureInPictureParams(@NonNull PictureInPictureParams params) { 2177 try { 2178 if (!deviceSupportsPictureInPictureMode()) { 2179 return; 2180 } 2181 if (params == null) { 2182 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2183 } 2184 ActivityManagerNative.getDefault().setPictureInPictureParams(mToken, params); 2185 } catch (RemoteException e) { 2186 } 2187 } 2188 2189 /** 2190 * Return the number of actions that will be displayed in the picture-in-picture UI when the 2191 * user interacts with the activity currently in picture-in-picture mode. This number may change 2192 * if the global configuration changes (ie. if the device is plugged into an external display), 2193 * but will always be larger than three. 2194 */ 2195 public int getMaxNumPictureInPictureActions() { 2196 try { 2197 return ActivityManagerNative.getDefault().getMaxNumPictureInPictureActions(mToken); 2198 } catch (RemoteException e) { 2199 return 0; 2200 } 2201 } 2202 2203 /** 2204 * @return Whether this device supports picture-in-picture. 2205 */ 2206 private boolean deviceSupportsPictureInPictureMode() { 2207 return getPackageManager().hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE); 2208 } 2209 2210 void dispatchMovedToDisplay(int displayId, Configuration config) { 2211 updateDisplay(displayId); 2212 onMovedToDisplay(displayId, config); 2213 } 2214 2215 /** 2216 * Called by the system when the activity is moved from one display to another without 2217 * recreation. This means that this activity is declared to handle all changes to configuration 2218 * that happened when it was switched to another display, so it wasn't destroyed and created 2219 * again. 2220 * 2221 * <p>This call will be followed by {@link #onConfigurationChanged(Configuration)} if the 2222 * applied configuration actually changed. It is up to app developer to choose whether to handle 2223 * the change in this method or in the following {@link #onConfigurationChanged(Configuration)} 2224 * call. 2225 * 2226 * <p>Use this callback to track changes to the displays if some activity functionality relies 2227 * on an association with some display properties. 2228 * 2229 * @param displayId The id of the display to which activity was moved. 2230 * @param config Configuration of the activity resources on new display after move. 2231 * 2232 * @see #onConfigurationChanged(Configuration) 2233 * @see View#onMovedToDisplay(int, Configuration) 2234 * @hide 2235 */ 2236 public void onMovedToDisplay(int displayId, Configuration config) { 2237 } 2238 2239 /** 2240 * Called by the system when the device configuration changes while your 2241 * activity is running. Note that this will <em>only</em> be called if 2242 * you have selected configurations you would like to handle with the 2243 * {@link android.R.attr#configChanges} attribute in your manifest. If 2244 * any configuration change occurs that is not selected to be reported 2245 * by that attribute, then instead of reporting it the system will stop 2246 * and restart the activity (to have it launched with the new 2247 * configuration). 2248 * 2249 * <p>At the time that this function has been called, your Resources 2250 * object will have been updated to return resource values matching the 2251 * new configuration. 2252 * 2253 * @param newConfig The new device configuration. 2254 */ 2255 public void onConfigurationChanged(Configuration newConfig) { 2256 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 2257 mCalled = true; 2258 2259 mFragments.dispatchConfigurationChanged(newConfig); 2260 2261 if (mWindow != null) { 2262 // Pass the configuration changed event to the window 2263 mWindow.onConfigurationChanged(newConfig); 2264 } 2265 2266 if (mActionBar != null) { 2267 // Do this last; the action bar will need to access 2268 // view changes from above. 2269 mActionBar.onConfigurationChanged(newConfig); 2270 } 2271 } 2272 2273 /** 2274 * If this activity is being destroyed because it can not handle a 2275 * configuration parameter being changed (and thus its 2276 * {@link #onConfigurationChanged(Configuration)} method is 2277 * <em>not</em> being called), then you can use this method to discover 2278 * the set of changes that have occurred while in the process of being 2279 * destroyed. Note that there is no guarantee that these will be 2280 * accurate (other changes could have happened at any time), so you should 2281 * only use this as an optimization hint. 2282 * 2283 * @return Returns a bit field of the configuration parameters that are 2284 * changing, as defined by the {@link android.content.res.Configuration} 2285 * class. 2286 */ 2287 public int getChangingConfigurations() { 2288 return mConfigChangeFlags; 2289 } 2290 2291 /** 2292 * Retrieve the non-configuration instance data that was previously 2293 * returned by {@link #onRetainNonConfigurationInstance()}. This will 2294 * be available from the initial {@link #onCreate} and 2295 * {@link #onStart} calls to the new instance, allowing you to extract 2296 * any useful dynamic state from the previous instance. 2297 * 2298 * <p>Note that the data you retrieve here should <em>only</em> be used 2299 * as an optimization for handling configuration changes. You should always 2300 * be able to handle getting a null pointer back, and an activity must 2301 * still be able to restore itself to its previous state (through the 2302 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2303 * function returns null. 2304 * 2305 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2306 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2307 * available on older platforms through the Android support libraries. 2308 * 2309 * @return the object previously returned by {@link #onRetainNonConfigurationInstance()} 2310 */ 2311 @Nullable 2312 public Object getLastNonConfigurationInstance() { 2313 return mLastNonConfigurationInstances != null 2314 ? mLastNonConfigurationInstances.activity : null; 2315 } 2316 2317 /** 2318 * Called by the system, as part of destroying an 2319 * activity due to a configuration change, when it is known that a new 2320 * instance will immediately be created for the new configuration. You 2321 * can return any object you like here, including the activity instance 2322 * itself, which can later be retrieved by calling 2323 * {@link #getLastNonConfigurationInstance()} in the new activity 2324 * instance. 2325 * 2326 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2327 * or later, consider instead using a {@link Fragment} with 2328 * {@link Fragment#setRetainInstance(boolean) 2329 * Fragment.setRetainInstance(boolean}.</em> 2330 * 2331 * <p>This function is called purely as an optimization, and you must 2332 * not rely on it being called. When it is called, a number of guarantees 2333 * will be made to help optimize configuration switching: 2334 * <ul> 2335 * <li> The function will be called between {@link #onStop} and 2336 * {@link #onDestroy}. 2337 * <li> A new instance of the activity will <em>always</em> be immediately 2338 * created after this one's {@link #onDestroy()} is called. In particular, 2339 * <em>no</em> messages will be dispatched during this time (when the returned 2340 * object does not have an activity to be associated with). 2341 * <li> The object you return here will <em>always</em> be available from 2342 * the {@link #getLastNonConfigurationInstance()} method of the following 2343 * activity instance as described there. 2344 * </ul> 2345 * 2346 * <p>These guarantees are designed so that an activity can use this API 2347 * to propagate extensive state from the old to new activity instance, from 2348 * loaded bitmaps, to network connections, to evenly actively running 2349 * threads. Note that you should <em>not</em> propagate any data that 2350 * may change based on the configuration, including any data loaded from 2351 * resources such as strings, layouts, or drawables. 2352 * 2353 * <p>The guarantee of no message handling during the switch to the next 2354 * activity simplifies use with active objects. For example if your retained 2355 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2356 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2357 * not be called from the call here until you execute the next instance's 2358 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2359 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2360 * running in a separate thread.) 2361 * 2362 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2363 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2364 * available on older platforms through the Android support libraries. 2365 * 2366 * @return any Object holding the desired state to propagate to the 2367 * next activity instance 2368 */ 2369 public Object onRetainNonConfigurationInstance() { 2370 return null; 2371 } 2372 2373 /** 2374 * Retrieve the non-configuration instance data that was previously 2375 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2376 * be available from the initial {@link #onCreate} and 2377 * {@link #onStart} calls to the new instance, allowing you to extract 2378 * any useful dynamic state from the previous instance. 2379 * 2380 * <p>Note that the data you retrieve here should <em>only</em> be used 2381 * as an optimization for handling configuration changes. You should always 2382 * be able to handle getting a null pointer back, and an activity must 2383 * still be able to restore itself to its previous state (through the 2384 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2385 * function returns null. 2386 * 2387 * @return Returns the object previously returned by 2388 * {@link #onRetainNonConfigurationChildInstances()} 2389 */ 2390 @Nullable 2391 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2392 return mLastNonConfigurationInstances != null 2393 ? mLastNonConfigurationInstances.children : null; 2394 } 2395 2396 /** 2397 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2398 * it should return either a mapping from child activity id strings to arbitrary objects, 2399 * or null. This method is intended to be used by Activity framework subclasses that control a 2400 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2401 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2402 */ 2403 @Nullable 2404 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2405 return null; 2406 } 2407 2408 NonConfigurationInstances retainNonConfigurationInstances() { 2409 Object activity = onRetainNonConfigurationInstance(); 2410 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2411 FragmentManagerNonConfig fragments = mFragments.retainNestedNonConfig(); 2412 2413 // We're already stopped but we've been asked to retain. 2414 // Our fragments are taken care of but we need to mark the loaders for retention. 2415 // In order to do this correctly we need to restart the loaders first before 2416 // handing them off to the next activity. 2417 mFragments.doLoaderStart(); 2418 mFragments.doLoaderStop(true); 2419 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2420 2421 if (activity == null && children == null && fragments == null && loaders == null 2422 && mVoiceInteractor == null) { 2423 return null; 2424 } 2425 2426 NonConfigurationInstances nci = new NonConfigurationInstances(); 2427 nci.activity = activity; 2428 nci.children = children; 2429 nci.fragments = fragments; 2430 nci.loaders = loaders; 2431 if (mVoiceInteractor != null) { 2432 mVoiceInteractor.retainInstance(); 2433 nci.voiceInteractor = mVoiceInteractor; 2434 } 2435 return nci; 2436 } 2437 2438 public void onLowMemory() { 2439 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2440 mCalled = true; 2441 mFragments.dispatchLowMemory(); 2442 } 2443 2444 public void onTrimMemory(int level) { 2445 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2446 mCalled = true; 2447 mFragments.dispatchTrimMemory(level); 2448 } 2449 2450 /** 2451 * Return the FragmentManager for interacting with fragments associated 2452 * with this activity. 2453 * 2454 * @deprecated Use {@link android.support.v4.app.FragmentActivity#getSupportFragmentManager()} 2455 */ 2456 @Deprecated 2457 public FragmentManager getFragmentManager() { 2458 return mFragments.getFragmentManager(); 2459 } 2460 2461 /** 2462 * Called when a Fragment is being attached to this activity, immediately 2463 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2464 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2465 * 2466 * @deprecated Use {@link 2467 * android.support.v4.app.FragmentActivity#onAttachFragment(android.support.v4.app.Fragment)} 2468 */ 2469 @Deprecated 2470 public void onAttachFragment(Fragment fragment) { 2471 } 2472 2473 /** 2474 * Wrapper around 2475 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2476 * that gives the resulting {@link Cursor} to call 2477 * {@link #startManagingCursor} so that the activity will manage its 2478 * lifecycle for you. 2479 * 2480 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2481 * or later, consider instead using {@link LoaderManager} instead, available 2482 * via {@link #getLoaderManager()}.</em> 2483 * 2484 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2485 * this method, because the activity will do that for you at the appropriate time. However, if 2486 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2487 * not</em> automatically close the cursor and, in that case, you must call 2488 * {@link Cursor#close()}.</p> 2489 * 2490 * @param uri The URI of the content provider to query. 2491 * @param projection List of columns to return. 2492 * @param selection SQL WHERE clause. 2493 * @param sortOrder SQL ORDER BY clause. 2494 * 2495 * @return The Cursor that was returned by query(). 2496 * 2497 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2498 * @see #startManagingCursor 2499 * @hide 2500 * 2501 * @deprecated Use {@link CursorLoader} instead. 2502 */ 2503 @Deprecated 2504 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2505 String sortOrder) { 2506 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2507 if (c != null) { 2508 startManagingCursor(c); 2509 } 2510 return c; 2511 } 2512 2513 /** 2514 * Wrapper around 2515 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2516 * that gives the resulting {@link Cursor} to call 2517 * {@link #startManagingCursor} so that the activity will manage its 2518 * lifecycle for you. 2519 * 2520 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2521 * or later, consider instead using {@link LoaderManager} instead, available 2522 * via {@link #getLoaderManager()}.</em> 2523 * 2524 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2525 * this method, because the activity will do that for you at the appropriate time. However, if 2526 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2527 * not</em> automatically close the cursor and, in that case, you must call 2528 * {@link Cursor#close()}.</p> 2529 * 2530 * @param uri The URI of the content provider to query. 2531 * @param projection List of columns to return. 2532 * @param selection SQL WHERE clause. 2533 * @param selectionArgs The arguments to selection, if any ?s are pesent 2534 * @param sortOrder SQL ORDER BY clause. 2535 * 2536 * @return The Cursor that was returned by query(). 2537 * 2538 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2539 * @see #startManagingCursor 2540 * 2541 * @deprecated Use {@link CursorLoader} instead. 2542 */ 2543 @Deprecated 2544 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2545 String[] selectionArgs, String sortOrder) { 2546 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2547 if (c != null) { 2548 startManagingCursor(c); 2549 } 2550 return c; 2551 } 2552 2553 /** 2554 * This method allows the activity to take care of managing the given 2555 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2556 * That is, when the activity is stopped it will automatically call 2557 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2558 * it will call {@link Cursor#requery} for you. When the activity is 2559 * destroyed, all managed Cursors will be closed automatically. 2560 * 2561 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2562 * or later, consider instead using {@link LoaderManager} instead, available 2563 * via {@link #getLoaderManager()}.</em> 2564 * 2565 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2566 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2567 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2568 * <em>will not</em> automatically close the cursor and, in that case, you must call 2569 * {@link Cursor#close()}.</p> 2570 * 2571 * @param c The Cursor to be managed. 2572 * 2573 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2574 * @see #stopManagingCursor 2575 * 2576 * @deprecated Use the new {@link android.content.CursorLoader} class with 2577 * {@link LoaderManager} instead; this is also 2578 * available on older platforms through the Android compatibility package. 2579 */ 2580 @Deprecated 2581 public void startManagingCursor(Cursor c) { 2582 synchronized (mManagedCursors) { 2583 mManagedCursors.add(new ManagedCursor(c)); 2584 } 2585 } 2586 2587 /** 2588 * Given a Cursor that was previously given to 2589 * {@link #startManagingCursor}, stop the activity's management of that 2590 * cursor. 2591 * 2592 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2593 * the system <em>will not</em> automatically close the cursor and you must call 2594 * {@link Cursor#close()}.</p> 2595 * 2596 * @param c The Cursor that was being managed. 2597 * 2598 * @see #startManagingCursor 2599 * 2600 * @deprecated Use the new {@link android.content.CursorLoader} class with 2601 * {@link LoaderManager} instead; this is also 2602 * available on older platforms through the Android compatibility package. 2603 */ 2604 @Deprecated 2605 public void stopManagingCursor(Cursor c) { 2606 synchronized (mManagedCursors) { 2607 final int N = mManagedCursors.size(); 2608 for (int i=0; i<N; i++) { 2609 ManagedCursor mc = mManagedCursors.get(i); 2610 if (mc.mCursor == c) { 2611 mManagedCursors.remove(i); 2612 break; 2613 } 2614 } 2615 } 2616 } 2617 2618 /** 2619 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2620 * this is a no-op. 2621 * @hide 2622 */ 2623 @Deprecated 2624 public void setPersistent(boolean isPersistent) { 2625 } 2626 2627 /** 2628 * Finds a view that was identified by the {@code android:id} XML attribute 2629 * that was processed in {@link #onCreate}. 2630 * <p> 2631 * <strong>Note:</strong> In most cases -- depending on compiler support -- 2632 * the resulting view is automatically cast to the target class type. If 2633 * the target class type is unconstrained, an explicit cast may be 2634 * necessary. 2635 * 2636 * @param id the ID to search for 2637 * @return a view with given ID if found, or {@code null} otherwise 2638 * @see View#findViewById(int) 2639 * @see Activity#requireViewById(int) 2640 */ 2641 @Nullable 2642 public <T extends View> T findViewById(@IdRes int id) { 2643 return getWindow().findViewById(id); 2644 } 2645 2646 /** 2647 * Finds a view that was identified by the {@code android:id} XML attribute that was processed 2648 * in {@link #onCreate}, or throws an IllegalArgumentException if the ID is invalid, or there is 2649 * no matching view in the hierarchy. 2650 * <p> 2651 * <strong>Note:</strong> In most cases -- depending on compiler support -- 2652 * the resulting view is automatically cast to the target class type. If 2653 * the target class type is unconstrained, an explicit cast may be 2654 * necessary. 2655 * 2656 * @param id the ID to search for 2657 * @return a view with given ID 2658 * @see View#requireViewById(int) 2659 * @see Activity#findViewById(int) 2660 */ 2661 @NonNull 2662 public final <T extends View> T requireViewById(@IdRes int id) { 2663 T view = findViewById(id); 2664 if (view == null) { 2665 throw new IllegalArgumentException("ID does not reference a View inside this Activity"); 2666 } 2667 return view; 2668 } 2669 2670 /** 2671 * Retrieve a reference to this activity's ActionBar. 2672 * 2673 * @return The Activity's ActionBar, or null if it does not have one. 2674 */ 2675 @Nullable 2676 public ActionBar getActionBar() { 2677 initWindowDecorActionBar(); 2678 return mActionBar; 2679 } 2680 2681 /** 2682 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2683 * Activity window. 2684 * 2685 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2686 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2687 * a traditional window decor action bar. The toolbar's menu will be populated with the 2688 * Activity's options menu and the navigation button will be wired through the standard 2689 * {@link android.R.id#home home} menu select action.</p> 2690 * 2691 * <p>In order to use a Toolbar within the Activity's window content the application 2692 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2693 * 2694 * @param toolbar Toolbar to set as the Activity's action bar, or {@code null} to clear it 2695 */ 2696 public void setActionBar(@Nullable Toolbar toolbar) { 2697 final ActionBar ab = getActionBar(); 2698 if (ab instanceof WindowDecorActionBar) { 2699 throw new IllegalStateException("This Activity already has an action bar supplied " + 2700 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2701 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2702 } 2703 2704 // If we reach here then we're setting a new action bar 2705 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2706 mMenuInflater = null; 2707 2708 // If we have an action bar currently, destroy it 2709 if (ab != null) { 2710 ab.onDestroy(); 2711 } 2712 2713 if (toolbar != null) { 2714 final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2715 mActionBar = tbab; 2716 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2717 } else { 2718 mActionBar = null; 2719 // Re-set the original window callback since we may have already set a Toolbar wrapper 2720 mWindow.setCallback(this); 2721 } 2722 2723 invalidateOptionsMenu(); 2724 } 2725 2726 /** 2727 * Creates a new ActionBar, locates the inflated ActionBarView, 2728 * initializes the ActionBar with the view, and sets mActionBar. 2729 */ 2730 private void initWindowDecorActionBar() { 2731 Window window = getWindow(); 2732 2733 // Initializing the window decor can change window feature flags. 2734 // Make sure that we have the correct set before performing the test below. 2735 window.getDecorView(); 2736 2737 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2738 return; 2739 } 2740 2741 mActionBar = new WindowDecorActionBar(this); 2742 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2743 2744 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2745 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2746 } 2747 2748 /** 2749 * Set the activity content from a layout resource. The resource will be 2750 * inflated, adding all top-level views to the activity. 2751 * 2752 * @param layoutResID Resource ID to be inflated. 2753 * 2754 * @see #setContentView(android.view.View) 2755 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2756 */ 2757 public void setContentView(@LayoutRes int layoutResID) { 2758 getWindow().setContentView(layoutResID); 2759 initWindowDecorActionBar(); 2760 } 2761 2762 /** 2763 * Set the activity content to an explicit view. This view is placed 2764 * directly into the activity's view hierarchy. It can itself be a complex 2765 * view hierarchy. When calling this method, the layout parameters of the 2766 * specified view are ignored. Both the width and the height of the view are 2767 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2768 * your own layout parameters, invoke 2769 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2770 * instead. 2771 * 2772 * @param view The desired content to display. 2773 * 2774 * @see #setContentView(int) 2775 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2776 */ 2777 public void setContentView(View view) { 2778 getWindow().setContentView(view); 2779 initWindowDecorActionBar(); 2780 } 2781 2782 /** 2783 * Set the activity content to an explicit view. This view is placed 2784 * directly into the activity's view hierarchy. It can itself be a complex 2785 * view hierarchy. 2786 * 2787 * @param view The desired content to display. 2788 * @param params Layout parameters for the view. 2789 * 2790 * @see #setContentView(android.view.View) 2791 * @see #setContentView(int) 2792 */ 2793 public void setContentView(View view, ViewGroup.LayoutParams params) { 2794 getWindow().setContentView(view, params); 2795 initWindowDecorActionBar(); 2796 } 2797 2798 /** 2799 * Add an additional content view to the activity. Added after any existing 2800 * ones in the activity -- existing views are NOT removed. 2801 * 2802 * @param view The desired content to display. 2803 * @param params Layout parameters for the view. 2804 */ 2805 public void addContentView(View view, ViewGroup.LayoutParams params) { 2806 getWindow().addContentView(view, params); 2807 initWindowDecorActionBar(); 2808 } 2809 2810 /** 2811 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2812 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2813 * 2814 * <p>This method will return non-null after content has been initialized (e.g. by using 2815 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2816 * 2817 * @return This window's content TransitionManager or null if none is set. 2818 */ 2819 public TransitionManager getContentTransitionManager() { 2820 return getWindow().getTransitionManager(); 2821 } 2822 2823 /** 2824 * Set the {@link TransitionManager} to use for default transitions in this window. 2825 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2826 * 2827 * @param tm The TransitionManager to use for scene changes. 2828 */ 2829 public void setContentTransitionManager(TransitionManager tm) { 2830 getWindow().setTransitionManager(tm); 2831 } 2832 2833 /** 2834 * Retrieve the {@link Scene} representing this window's current content. 2835 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2836 * 2837 * <p>This method will return null if the current content is not represented by a Scene.</p> 2838 * 2839 * @return Current Scene being shown or null 2840 */ 2841 public Scene getContentScene() { 2842 return getWindow().getContentScene(); 2843 } 2844 2845 /** 2846 * Sets whether this activity is finished when touched outside its window's 2847 * bounds. 2848 */ 2849 public void setFinishOnTouchOutside(boolean finish) { 2850 mWindow.setCloseOnTouchOutside(finish); 2851 } 2852 2853 /** @hide */ 2854 @IntDef(prefix = { "DEFAULT_KEYS_" }, value = { 2855 DEFAULT_KEYS_DISABLE, 2856 DEFAULT_KEYS_DIALER, 2857 DEFAULT_KEYS_SHORTCUT, 2858 DEFAULT_KEYS_SEARCH_LOCAL, 2859 DEFAULT_KEYS_SEARCH_GLOBAL 2860 }) 2861 @Retention(RetentionPolicy.SOURCE) 2862 @interface DefaultKeyMode {} 2863 2864 /** 2865 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2866 * keys. 2867 * 2868 * @see #setDefaultKeyMode 2869 */ 2870 static public final int DEFAULT_KEYS_DISABLE = 0; 2871 /** 2872 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2873 * key handling. 2874 * 2875 * @see #setDefaultKeyMode 2876 */ 2877 static public final int DEFAULT_KEYS_DIALER = 1; 2878 /** 2879 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2880 * default key handling. 2881 * 2882 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2883 * 2884 * @see #setDefaultKeyMode 2885 */ 2886 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2887 /** 2888 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2889 * will start an application-defined search. (If the application or activity does not 2890 * actually define a search, the the keys will be ignored.) 2891 * 2892 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2893 * 2894 * @see #setDefaultKeyMode 2895 */ 2896 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2897 2898 /** 2899 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2900 * will start a global search (typically web search, but some platforms may define alternate 2901 * methods for global search) 2902 * 2903 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2904 * 2905 * @see #setDefaultKeyMode 2906 */ 2907 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2908 2909 /** 2910 * Select the default key handling for this activity. This controls what 2911 * will happen to key events that are not otherwise handled. The default 2912 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2913 * floor. Other modes allow you to launch the dialer 2914 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2915 * menu without requiring the menu key be held down 2916 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2917 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2918 * 2919 * <p>Note that the mode selected here does not impact the default 2920 * handling of system keys, such as the "back" and "menu" keys, and your 2921 * activity and its views always get a first chance to receive and handle 2922 * all application keys. 2923 * 2924 * @param mode The desired default key mode constant. 2925 * 2926 * @see #onKeyDown 2927 */ 2928 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2929 mDefaultKeyMode = mode; 2930 2931 // Some modes use a SpannableStringBuilder to track & dispatch input events 2932 // This list must remain in sync with the switch in onKeyDown() 2933 switch (mode) { 2934 case DEFAULT_KEYS_DISABLE: 2935 case DEFAULT_KEYS_SHORTCUT: 2936 mDefaultKeySsb = null; // not used in these modes 2937 break; 2938 case DEFAULT_KEYS_DIALER: 2939 case DEFAULT_KEYS_SEARCH_LOCAL: 2940 case DEFAULT_KEYS_SEARCH_GLOBAL: 2941 mDefaultKeySsb = new SpannableStringBuilder(); 2942 Selection.setSelection(mDefaultKeySsb,0); 2943 break; 2944 default: 2945 throw new IllegalArgumentException(); 2946 } 2947 } 2948 2949 /** 2950 * Called when a key was pressed down and not handled by any of the views 2951 * inside of the activity. So, for example, key presses while the cursor 2952 * is inside a TextView will not trigger the event (unless it is a navigation 2953 * to another object) because TextView handles its own key presses. 2954 * 2955 * <p>If the focused view didn't want this event, this method is called. 2956 * 2957 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2958 * by calling {@link #onBackPressed()}, though the behavior varies based 2959 * on the application compatibility mode: for 2960 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2961 * it will set up the dispatch to call {@link #onKeyUp} where the action 2962 * will be performed; for earlier applications, it will perform the 2963 * action immediately in on-down, as those versions of the platform 2964 * behaved. 2965 * 2966 * <p>Other additional default key handling may be performed 2967 * if configured with {@link #setDefaultKeyMode}. 2968 * 2969 * @return Return <code>true</code> to prevent this event from being propagated 2970 * further, or <code>false</code> to indicate that you have not handled 2971 * this event and it should continue to be propagated. 2972 * @see #onKeyUp 2973 * @see android.view.KeyEvent 2974 */ 2975 public boolean onKeyDown(int keyCode, KeyEvent event) { 2976 if (keyCode == KeyEvent.KEYCODE_BACK) { 2977 if (getApplicationInfo().targetSdkVersion 2978 >= Build.VERSION_CODES.ECLAIR) { 2979 event.startTracking(); 2980 } else { 2981 onBackPressed(); 2982 } 2983 return true; 2984 } 2985 2986 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2987 return false; 2988 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2989 Window w = getWindow(); 2990 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2991 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2992 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2993 return true; 2994 } 2995 return false; 2996 } else if (keyCode == KeyEvent.KEYCODE_TAB) { 2997 // Don't consume TAB here since it's used for navigation. Arrow keys 2998 // aren't considered "typing keys" so they already won't get consumed. 2999 return false; 3000 } else { 3001 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 3002 boolean clearSpannable = false; 3003 boolean handled; 3004 if ((event.getRepeatCount() != 0) || event.isSystem()) { 3005 clearSpannable = true; 3006 handled = false; 3007 } else { 3008 handled = TextKeyListener.getInstance().onKeyDown( 3009 null, mDefaultKeySsb, keyCode, event); 3010 if (handled && mDefaultKeySsb.length() > 0) { 3011 // something useable has been typed - dispatch it now. 3012 3013 final String str = mDefaultKeySsb.toString(); 3014 clearSpannable = true; 3015 3016 switch (mDefaultKeyMode) { 3017 case DEFAULT_KEYS_DIALER: 3018 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 3019 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 3020 startActivity(intent); 3021 break; 3022 case DEFAULT_KEYS_SEARCH_LOCAL: 3023 startSearch(str, false, null, false); 3024 break; 3025 case DEFAULT_KEYS_SEARCH_GLOBAL: 3026 startSearch(str, false, null, true); 3027 break; 3028 } 3029 } 3030 } 3031 if (clearSpannable) { 3032 mDefaultKeySsb.clear(); 3033 mDefaultKeySsb.clearSpans(); 3034 Selection.setSelection(mDefaultKeySsb,0); 3035 } 3036 return handled; 3037 } 3038 } 3039 3040 /** 3041 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 3042 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 3043 * the event). 3044 */ 3045 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 3046 return false; 3047 } 3048 3049 /** 3050 * Called when a key was released and not handled by any of the views 3051 * inside of the activity. So, for example, key presses while the cursor 3052 * is inside a TextView will not trigger the event (unless it is a navigation 3053 * to another object) because TextView handles its own key presses. 3054 * 3055 * <p>The default implementation handles KEYCODE_BACK to stop the activity 3056 * and go back. 3057 * 3058 * @return Return <code>true</code> to prevent this event from being propagated 3059 * further, or <code>false</code> to indicate that you have not handled 3060 * this event and it should continue to be propagated. 3061 * @see #onKeyDown 3062 * @see KeyEvent 3063 */ 3064 public boolean onKeyUp(int keyCode, KeyEvent event) { 3065 if (getApplicationInfo().targetSdkVersion 3066 >= Build.VERSION_CODES.ECLAIR) { 3067 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 3068 && !event.isCanceled()) { 3069 onBackPressed(); 3070 return true; 3071 } 3072 } 3073 return false; 3074 } 3075 3076 /** 3077 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 3078 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 3079 * the event). 3080 */ 3081 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 3082 return false; 3083 } 3084 3085 /** 3086 * Called when the activity has detected the user's press of the back 3087 * key. The default implementation simply finishes the current activity, 3088 * but you can override this to do whatever you want. 3089 */ 3090 public void onBackPressed() { 3091 if (mActionBar != null && mActionBar.collapseActionView()) { 3092 return; 3093 } 3094 3095 FragmentManager fragmentManager = mFragments.getFragmentManager(); 3096 3097 if (fragmentManager.isStateSaved() || !fragmentManager.popBackStackImmediate()) { 3098 finishAfterTransition(); 3099 } 3100 } 3101 3102 /** 3103 * Called when a key shortcut event is not handled by any of the views in the Activity. 3104 * Override this method to implement global key shortcuts for the Activity. 3105 * Key shortcuts can also be implemented by setting the 3106 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 3107 * 3108 * @param keyCode The value in event.getKeyCode(). 3109 * @param event Description of the key event. 3110 * @return True if the key shortcut was handled. 3111 */ 3112 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 3113 // Let the Action Bar have a chance at handling the shortcut. 3114 ActionBar actionBar = getActionBar(); 3115 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 3116 } 3117 3118 /** 3119 * Called when a touch screen event was not handled by any of the views 3120 * under it. This is most useful to process touch events that happen 3121 * outside of your window bounds, where there is no view to receive it. 3122 * 3123 * @param event The touch screen event being processed. 3124 * 3125 * @return Return true if you have consumed the event, false if you haven't. 3126 * The default implementation always returns false. 3127 */ 3128 public boolean onTouchEvent(MotionEvent event) { 3129 if (mWindow.shouldCloseOnTouch(this, event)) { 3130 finish(); 3131 return true; 3132 } 3133 3134 return false; 3135 } 3136 3137 /** 3138 * Called when the trackball was moved and not handled by any of the 3139 * views inside of the activity. So, for example, if the trackball moves 3140 * while focus is on a button, you will receive a call here because 3141 * buttons do not normally do anything with trackball events. The call 3142 * here happens <em>before</em> trackball movements are converted to 3143 * DPAD key events, which then get sent back to the view hierarchy, and 3144 * will be processed at the point for things like focus navigation. 3145 * 3146 * @param event The trackball event being processed. 3147 * 3148 * @return Return true if you have consumed the event, false if you haven't. 3149 * The default implementation always returns false. 3150 */ 3151 public boolean onTrackballEvent(MotionEvent event) { 3152 return false; 3153 } 3154 3155 /** 3156 * Called when a generic motion event was not handled by any of the 3157 * views inside of the activity. 3158 * <p> 3159 * Generic motion events describe joystick movements, mouse hovers, track pad 3160 * touches, scroll wheel movements and other input events. The 3161 * {@link MotionEvent#getSource() source} of the motion event specifies 3162 * the class of input that was received. Implementations of this method 3163 * must examine the bits in the source before processing the event. 3164 * The following code example shows how this is done. 3165 * </p><p> 3166 * Generic motion events with source class 3167 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 3168 * are delivered to the view under the pointer. All other generic motion events are 3169 * delivered to the focused view. 3170 * </p><p> 3171 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 3172 * handle this event. 3173 * </p> 3174 * 3175 * @param event The generic motion event being processed. 3176 * 3177 * @return Return true if you have consumed the event, false if you haven't. 3178 * The default implementation always returns false. 3179 */ 3180 public boolean onGenericMotionEvent(MotionEvent event) { 3181 return false; 3182 } 3183 3184 /** 3185 * Called whenever a key, touch, or trackball event is dispatched to the 3186 * activity. Implement this method if you wish to know that the user has 3187 * interacted with the device in some way while your activity is running. 3188 * This callback and {@link #onUserLeaveHint} are intended to help 3189 * activities manage status bar notifications intelligently; specifically, 3190 * for helping activities determine the proper time to cancel a notfication. 3191 * 3192 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 3193 * be accompanied by calls to {@link #onUserInteraction}. This 3194 * ensures that your activity will be told of relevant user activity such 3195 * as pulling down the notification pane and touching an item there. 3196 * 3197 * <p>Note that this callback will be invoked for the touch down action 3198 * that begins a touch gesture, but may not be invoked for the touch-moved 3199 * and touch-up actions that follow. 3200 * 3201 * @see #onUserLeaveHint() 3202 */ 3203 public void onUserInteraction() { 3204 } 3205 3206 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 3207 // Update window manager if: we have a view, that view is 3208 // attached to its parent (which will be a RootView), and 3209 // this activity is not embedded. 3210 if (mParent == null) { 3211 View decor = mDecor; 3212 if (decor != null && decor.getParent() != null) { 3213 getWindowManager().updateViewLayout(decor, params); 3214 } 3215 } 3216 } 3217 3218 public void onContentChanged() { 3219 } 3220 3221 /** 3222 * Called when the current {@link Window} of the activity gains or loses 3223 * focus. This is the best indicator of whether this activity is visible 3224 * to the user. The default implementation clears the key tracking 3225 * state, so should always be called. 3226 * 3227 * <p>Note that this provides information about global focus state, which 3228 * is managed independently of activity lifecycles. As such, while focus 3229 * changes will generally have some relation to lifecycle changes (an 3230 * activity that is stopped will not generally get window focus), you 3231 * should not rely on any particular order between the callbacks here and 3232 * those in the other lifecycle methods such as {@link #onResume}. 3233 * 3234 * <p>As a general rule, however, a resumed activity will have window 3235 * focus... unless it has displayed other dialogs or popups that take 3236 * input focus, in which case the activity itself will not have focus 3237 * when the other windows have it. Likewise, the system may display 3238 * system-level windows (such as the status bar notification panel or 3239 * a system alert) which will temporarily take window input focus without 3240 * pausing the foreground activity. 3241 * 3242 * @param hasFocus Whether the window of this activity has focus. 3243 * 3244 * @see #hasWindowFocus() 3245 * @see #onResume 3246 * @see View#onWindowFocusChanged(boolean) 3247 */ 3248 public void onWindowFocusChanged(boolean hasFocus) { 3249 } 3250 3251 /** 3252 * Called when the main window associated with the activity has been 3253 * attached to the window manager. 3254 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 3255 * for more information. 3256 * @see View#onAttachedToWindow 3257 */ 3258 public void onAttachedToWindow() { 3259 } 3260 3261 /** 3262 * Called when the main window associated with the activity has been 3263 * detached from the window manager. 3264 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 3265 * for more information. 3266 * @see View#onDetachedFromWindow 3267 */ 3268 public void onDetachedFromWindow() { 3269 } 3270 3271 /** 3272 * Returns true if this activity's <em>main</em> window currently has window focus. 3273 * Note that this is not the same as the view itself having focus. 3274 * 3275 * @return True if this activity's main window currently has window focus. 3276 * 3277 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 3278 */ 3279 public boolean hasWindowFocus() { 3280 Window w = getWindow(); 3281 if (w != null) { 3282 View d = w.getDecorView(); 3283 if (d != null) { 3284 return d.hasWindowFocus(); 3285 } 3286 } 3287 return false; 3288 } 3289 3290 /** 3291 * Called when the main window associated with the activity has been dismissed. 3292 * @hide 3293 */ 3294 @Override 3295 public void onWindowDismissed(boolean finishTask, boolean suppressWindowTransition) { 3296 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 3297 if (suppressWindowTransition) { 3298 overridePendingTransition(0, 0); 3299 } 3300 } 3301 3302 3303 /** 3304 * Moves the activity from {@link WindowConfiguration#WINDOWING_MODE_FREEFORM} windowing mode to 3305 * {@link WindowConfiguration#WINDOWING_MODE_FULLSCREEN}. 3306 * 3307 * @hide 3308 */ 3309 @Override 3310 public void exitFreeformMode() throws RemoteException { 3311 ActivityManager.getService().exitFreeformMode(mToken); 3312 } 3313 3314 /** 3315 * Puts the activity in picture-in-picture mode if the activity supports. 3316 * @see android.R.attr#supportsPictureInPicture 3317 * @hide 3318 */ 3319 @Override 3320 public void enterPictureInPictureModeIfPossible() { 3321 if (mActivityInfo.supportsPictureInPicture()) { 3322 enterPictureInPictureMode(); 3323 } 3324 } 3325 3326 /** 3327 * Called to process key events. You can override this to intercept all 3328 * key events before they are dispatched to the window. Be sure to call 3329 * this implementation for key events that should be handled normally. 3330 * 3331 * @param event The key event. 3332 * 3333 * @return boolean Return true if this event was consumed. 3334 */ 3335 public boolean dispatchKeyEvent(KeyEvent event) { 3336 onUserInteraction(); 3337 3338 // Let action bars open menus in response to the menu key prioritized over 3339 // the window handling it 3340 final int keyCode = event.getKeyCode(); 3341 if (keyCode == KeyEvent.KEYCODE_MENU && 3342 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 3343 return true; 3344 } 3345 3346 Window win = getWindow(); 3347 if (win.superDispatchKeyEvent(event)) { 3348 return true; 3349 } 3350 View decor = mDecor; 3351 if (decor == null) decor = win.getDecorView(); 3352 return event.dispatch(this, decor != null 3353 ? decor.getKeyDispatcherState() : null, this); 3354 } 3355 3356 /** 3357 * Called to process a key shortcut event. 3358 * You can override this to intercept all key shortcut events before they are 3359 * dispatched to the window. Be sure to call this implementation for key shortcut 3360 * events that should be handled normally. 3361 * 3362 * @param event The key shortcut event. 3363 * @return True if this event was consumed. 3364 */ 3365 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 3366 onUserInteraction(); 3367 if (getWindow().superDispatchKeyShortcutEvent(event)) { 3368 return true; 3369 } 3370 return onKeyShortcut(event.getKeyCode(), event); 3371 } 3372 3373 /** 3374 * Called to process touch screen events. You can override this to 3375 * intercept all touch screen events before they are dispatched to the 3376 * window. Be sure to call this implementation for touch screen events 3377 * that should be handled normally. 3378 * 3379 * @param ev The touch screen event. 3380 * 3381 * @return boolean Return true if this event was consumed. 3382 */ 3383 public boolean dispatchTouchEvent(MotionEvent ev) { 3384 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3385 onUserInteraction(); 3386 } 3387 if (getWindow().superDispatchTouchEvent(ev)) { 3388 return true; 3389 } 3390 return onTouchEvent(ev); 3391 } 3392 3393 /** 3394 * Called to process trackball events. You can override this to 3395 * intercept all trackball events before they are dispatched to the 3396 * window. Be sure to call this implementation for trackball events 3397 * that should be handled normally. 3398 * 3399 * @param ev The trackball event. 3400 * 3401 * @return boolean Return true if this event was consumed. 3402 */ 3403 public boolean dispatchTrackballEvent(MotionEvent ev) { 3404 onUserInteraction(); 3405 if (getWindow().superDispatchTrackballEvent(ev)) { 3406 return true; 3407 } 3408 return onTrackballEvent(ev); 3409 } 3410 3411 /** 3412 * Called to process generic motion events. You can override this to 3413 * intercept all generic motion events before they are dispatched to the 3414 * window. Be sure to call this implementation for generic motion events 3415 * that should be handled normally. 3416 * 3417 * @param ev The generic motion event. 3418 * 3419 * @return boolean Return true if this event was consumed. 3420 */ 3421 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3422 onUserInteraction(); 3423 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3424 return true; 3425 } 3426 return onGenericMotionEvent(ev); 3427 } 3428 3429 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3430 event.setClassName(getClass().getName()); 3431 event.setPackageName(getPackageName()); 3432 3433 LayoutParams params = getWindow().getAttributes(); 3434 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3435 (params.height == LayoutParams.MATCH_PARENT); 3436 event.setFullScreen(isFullScreen); 3437 3438 CharSequence title = getTitle(); 3439 if (!TextUtils.isEmpty(title)) { 3440 event.getText().add(title); 3441 } 3442 3443 return true; 3444 } 3445 3446 /** 3447 * Default implementation of 3448 * {@link android.view.Window.Callback#onCreatePanelView} 3449 * for activities. This 3450 * simply returns null so that all panel sub-windows will have the default 3451 * menu behavior. 3452 */ 3453 @Nullable 3454 public View onCreatePanelView(int featureId) { 3455 return null; 3456 } 3457 3458 /** 3459 * Default implementation of 3460 * {@link android.view.Window.Callback#onCreatePanelMenu} 3461 * for activities. This calls through to the new 3462 * {@link #onCreateOptionsMenu} method for the 3463 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3464 * so that subclasses of Activity don't need to deal with feature codes. 3465 */ 3466 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3467 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3468 boolean show = onCreateOptionsMenu(menu); 3469 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3470 return show; 3471 } 3472 return false; 3473 } 3474 3475 /** 3476 * Default implementation of 3477 * {@link android.view.Window.Callback#onPreparePanel} 3478 * for activities. This 3479 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3480 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3481 * panel, so that subclasses of 3482 * Activity don't need to deal with feature codes. 3483 */ 3484 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3485 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3486 boolean goforit = onPrepareOptionsMenu(menu); 3487 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3488 return goforit; 3489 } 3490 return true; 3491 } 3492 3493 /** 3494 * {@inheritDoc} 3495 * 3496 * @return The default implementation returns true. 3497 */ 3498 public boolean onMenuOpened(int featureId, Menu menu) { 3499 if (featureId == Window.FEATURE_ACTION_BAR) { 3500 initWindowDecorActionBar(); 3501 if (mActionBar != null) { 3502 mActionBar.dispatchMenuVisibilityChanged(true); 3503 } else { 3504 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3505 } 3506 } 3507 return true; 3508 } 3509 3510 /** 3511 * Default implementation of 3512 * {@link android.view.Window.Callback#onMenuItemSelected} 3513 * for activities. This calls through to the new 3514 * {@link #onOptionsItemSelected} method for the 3515 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3516 * panel, so that subclasses of 3517 * Activity don't need to deal with feature codes. 3518 */ 3519 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3520 CharSequence titleCondensed = item.getTitleCondensed(); 3521 3522 switch (featureId) { 3523 case Window.FEATURE_OPTIONS_PANEL: 3524 // Put event logging here so it gets called even if subclass 3525 // doesn't call through to superclass's implmeentation of each 3526 // of these methods below 3527 if(titleCondensed != null) { 3528 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3529 } 3530 if (onOptionsItemSelected(item)) { 3531 return true; 3532 } 3533 if (mFragments.dispatchOptionsItemSelected(item)) { 3534 return true; 3535 } 3536 if (item.getItemId() == android.R.id.home && mActionBar != null && 3537 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3538 if (mParent == null) { 3539 return onNavigateUp(); 3540 } else { 3541 return mParent.onNavigateUpFromChild(this); 3542 } 3543 } 3544 return false; 3545 3546 case Window.FEATURE_CONTEXT_MENU: 3547 if(titleCondensed != null) { 3548 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3549 } 3550 if (onContextItemSelected(item)) { 3551 return true; 3552 } 3553 return mFragments.dispatchContextItemSelected(item); 3554 3555 default: 3556 return false; 3557 } 3558 } 3559 3560 /** 3561 * Default implementation of 3562 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3563 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3564 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3565 * so that subclasses of Activity don't need to deal with feature codes. 3566 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3567 * {@link #onContextMenuClosed(Menu)} will be called. 3568 */ 3569 public void onPanelClosed(int featureId, Menu menu) { 3570 switch (featureId) { 3571 case Window.FEATURE_OPTIONS_PANEL: 3572 mFragments.dispatchOptionsMenuClosed(menu); 3573 onOptionsMenuClosed(menu); 3574 break; 3575 3576 case Window.FEATURE_CONTEXT_MENU: 3577 onContextMenuClosed(menu); 3578 break; 3579 3580 case Window.FEATURE_ACTION_BAR: 3581 initWindowDecorActionBar(); 3582 mActionBar.dispatchMenuVisibilityChanged(false); 3583 break; 3584 } 3585 } 3586 3587 /** 3588 * Declare that the options menu has changed, so should be recreated. 3589 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3590 * time it needs to be displayed. 3591 */ 3592 public void invalidateOptionsMenu() { 3593 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3594 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3595 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3596 } 3597 } 3598 3599 /** 3600 * Initialize the contents of the Activity's standard options menu. You 3601 * should place your menu items in to <var>menu</var>. 3602 * 3603 * <p>This is only called once, the first time the options menu is 3604 * displayed. To update the menu every time it is displayed, see 3605 * {@link #onPrepareOptionsMenu}. 3606 * 3607 * <p>The default implementation populates the menu with standard system 3608 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3609 * they will be correctly ordered with application-defined menu items. 3610 * Deriving classes should always call through to the base implementation. 3611 * 3612 * <p>You can safely hold on to <var>menu</var> (and any items created 3613 * from it), making modifications to it as desired, until the next 3614 * time onCreateOptionsMenu() is called. 3615 * 3616 * <p>When you add items to the menu, you can implement the Activity's 3617 * {@link #onOptionsItemSelected} method to handle them there. 3618 * 3619 * @param menu The options menu in which you place your items. 3620 * 3621 * @return You must return true for the menu to be displayed; 3622 * if you return false it will not be shown. 3623 * 3624 * @see #onPrepareOptionsMenu 3625 * @see #onOptionsItemSelected 3626 */ 3627 public boolean onCreateOptionsMenu(Menu menu) { 3628 if (mParent != null) { 3629 return mParent.onCreateOptionsMenu(menu); 3630 } 3631 return true; 3632 } 3633 3634 /** 3635 * Prepare the Screen's standard options menu to be displayed. This is 3636 * called right before the menu is shown, every time it is shown. You can 3637 * use this method to efficiently enable/disable items or otherwise 3638 * dynamically modify the contents. 3639 * 3640 * <p>The default implementation updates the system menu items based on the 3641 * activity's state. Deriving classes should always call through to the 3642 * base class implementation. 3643 * 3644 * @param menu The options menu as last shown or first initialized by 3645 * onCreateOptionsMenu(). 3646 * 3647 * @return You must return true for the menu to be displayed; 3648 * if you return false it will not be shown. 3649 * 3650 * @see #onCreateOptionsMenu 3651 */ 3652 public boolean onPrepareOptionsMenu(Menu menu) { 3653 if (mParent != null) { 3654 return mParent.onPrepareOptionsMenu(menu); 3655 } 3656 return true; 3657 } 3658 3659 /** 3660 * This hook is called whenever an item in your options menu is selected. 3661 * The default implementation simply returns false to have the normal 3662 * processing happen (calling the item's Runnable or sending a message to 3663 * its Handler as appropriate). You can use this method for any items 3664 * for which you would like to do processing without those other 3665 * facilities. 3666 * 3667 * <p>Derived classes should call through to the base class for it to 3668 * perform the default menu handling.</p> 3669 * 3670 * @param item The menu item that was selected. 3671 * 3672 * @return boolean Return false to allow normal menu processing to 3673 * proceed, true to consume it here. 3674 * 3675 * @see #onCreateOptionsMenu 3676 */ 3677 public boolean onOptionsItemSelected(MenuItem item) { 3678 if (mParent != null) { 3679 return mParent.onOptionsItemSelected(item); 3680 } 3681 return false; 3682 } 3683 3684 /** 3685 * This method is called whenever the user chooses to navigate Up within your application's 3686 * activity hierarchy from the action bar. 3687 * 3688 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3689 * was specified in the manifest for this activity or an activity-alias to it, 3690 * default Up navigation will be handled automatically. If any activity 3691 * along the parent chain requires extra Intent arguments, the Activity subclass 3692 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3693 * to supply those arguments.</p> 3694 * 3695 * <p>See <a href="{@docRoot}guide/components/tasks-and-back-stack.html">Tasks and Back Stack</a> 3696 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3697 * from the design guide for more information about navigating within your app.</p> 3698 * 3699 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3700 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3701 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3702 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3703 * 3704 * @return true if Up navigation completed successfully and this Activity was finished, 3705 * false otherwise. 3706 */ 3707 public boolean onNavigateUp() { 3708 // Automatically handle hierarchical Up navigation if the proper 3709 // metadata is available. 3710 Intent upIntent = getParentActivityIntent(); 3711 if (upIntent != null) { 3712 if (mActivityInfo.taskAffinity == null) { 3713 // Activities with a null affinity are special; they really shouldn't 3714 // specify a parent activity intent in the first place. Just finish 3715 // the current activity and call it a day. 3716 finish(); 3717 } else if (shouldUpRecreateTask(upIntent)) { 3718 TaskStackBuilder b = TaskStackBuilder.create(this); 3719 onCreateNavigateUpTaskStack(b); 3720 onPrepareNavigateUpTaskStack(b); 3721 b.startActivities(); 3722 3723 // We can't finishAffinity if we have a result. 3724 // Fall back and simply finish the current activity instead. 3725 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3726 // Tell the developer what's going on to avoid hair-pulling. 3727 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3728 finish(); 3729 } else { 3730 finishAffinity(); 3731 } 3732 } else { 3733 navigateUpTo(upIntent); 3734 } 3735 return true; 3736 } 3737 return false; 3738 } 3739 3740 /** 3741 * This is called when a child activity of this one attempts to navigate up. 3742 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3743 * 3744 * @param child The activity making the call. 3745 */ 3746 public boolean onNavigateUpFromChild(Activity child) { 3747 return onNavigateUp(); 3748 } 3749 3750 /** 3751 * Define the synthetic task stack that will be generated during Up navigation from 3752 * a different task. 3753 * 3754 * <p>The default implementation of this method adds the parent chain of this activity 3755 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3756 * may choose to override this method to construct the desired task stack in a different 3757 * way.</p> 3758 * 3759 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3760 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3761 * returned by {@link #getParentActivityIntent()}.</p> 3762 * 3763 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3764 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3765 * 3766 * @param builder An empty TaskStackBuilder - the application should add intents representing 3767 * the desired task stack 3768 */ 3769 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3770 builder.addParentStack(this); 3771 } 3772 3773 /** 3774 * Prepare the synthetic task stack that will be generated during Up navigation 3775 * from a different task. 3776 * 3777 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3778 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3779 * If any extra data should be added to these intents before launching the new task, 3780 * the application should override this method and add that data here.</p> 3781 * 3782 * @param builder A TaskStackBuilder that has been populated with Intents by 3783 * onCreateNavigateUpTaskStack. 3784 */ 3785 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3786 } 3787 3788 /** 3789 * This hook is called whenever the options menu is being closed (either by the user canceling 3790 * the menu with the back/menu button, or when an item is selected). 3791 * 3792 * @param menu The options menu as last shown or first initialized by 3793 * onCreateOptionsMenu(). 3794 */ 3795 public void onOptionsMenuClosed(Menu menu) { 3796 if (mParent != null) { 3797 mParent.onOptionsMenuClosed(menu); 3798 } 3799 } 3800 3801 /** 3802 * Programmatically opens the options menu. If the options menu is already 3803 * open, this method does nothing. 3804 */ 3805 public void openOptionsMenu() { 3806 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3807 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3808 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3809 } 3810 } 3811 3812 /** 3813 * Progammatically closes the options menu. If the options menu is already 3814 * closed, this method does nothing. 3815 */ 3816 public void closeOptionsMenu() { 3817 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3818 (mActionBar == null || !mActionBar.closeOptionsMenu())) { 3819 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3820 } 3821 } 3822 3823 /** 3824 * Called when a context menu for the {@code view} is about to be shown. 3825 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3826 * time the context menu is about to be shown and should be populated for 3827 * the view (or item inside the view for {@link AdapterView} subclasses, 3828 * this can be found in the {@code menuInfo})). 3829 * <p> 3830 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3831 * item has been selected. 3832 * <p> 3833 * It is not safe to hold onto the context menu after this method returns. 3834 * 3835 */ 3836 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3837 } 3838 3839 /** 3840 * Registers a context menu to be shown for the given view (multiple views 3841 * can show the context menu). This method will set the 3842 * {@link OnCreateContextMenuListener} on the view to this activity, so 3843 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3844 * called when it is time to show the context menu. 3845 * 3846 * @see #unregisterForContextMenu(View) 3847 * @param view The view that should show a context menu. 3848 */ 3849 public void registerForContextMenu(View view) { 3850 view.setOnCreateContextMenuListener(this); 3851 } 3852 3853 /** 3854 * Prevents a context menu to be shown for the given view. This method will remove the 3855 * {@link OnCreateContextMenuListener} on the view. 3856 * 3857 * @see #registerForContextMenu(View) 3858 * @param view The view that should stop showing a context menu. 3859 */ 3860 public void unregisterForContextMenu(View view) { 3861 view.setOnCreateContextMenuListener(null); 3862 } 3863 3864 /** 3865 * Programmatically opens the context menu for a particular {@code view}. 3866 * The {@code view} should have been added via 3867 * {@link #registerForContextMenu(View)}. 3868 * 3869 * @param view The view to show the context menu for. 3870 */ 3871 public void openContextMenu(View view) { 3872 view.showContextMenu(); 3873 } 3874 3875 /** 3876 * Programmatically closes the most recently opened context menu, if showing. 3877 */ 3878 public void closeContextMenu() { 3879 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3880 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3881 } 3882 } 3883 3884 /** 3885 * This hook is called whenever an item in a context menu is selected. The 3886 * default implementation simply returns false to have the normal processing 3887 * happen (calling the item's Runnable or sending a message to its Handler 3888 * as appropriate). You can use this method for any items for which you 3889 * would like to do processing without those other facilities. 3890 * <p> 3891 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3892 * View that added this menu item. 3893 * <p> 3894 * Derived classes should call through to the base class for it to perform 3895 * the default menu handling. 3896 * 3897 * @param item The context menu item that was selected. 3898 * @return boolean Return false to allow normal context menu processing to 3899 * proceed, true to consume it here. 3900 */ 3901 public boolean onContextItemSelected(MenuItem item) { 3902 if (mParent != null) { 3903 return mParent.onContextItemSelected(item); 3904 } 3905 return false; 3906 } 3907 3908 /** 3909 * This hook is called whenever the context menu is being closed (either by 3910 * the user canceling the menu with the back/menu button, or when an item is 3911 * selected). 3912 * 3913 * @param menu The context menu that is being closed. 3914 */ 3915 public void onContextMenuClosed(Menu menu) { 3916 if (mParent != null) { 3917 mParent.onContextMenuClosed(menu); 3918 } 3919 } 3920 3921 /** 3922 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3923 */ 3924 @Deprecated 3925 protected Dialog onCreateDialog(int id) { 3926 return null; 3927 } 3928 3929 /** 3930 * Callback for creating dialogs that are managed (saved and restored) for you 3931 * by the activity. The default implementation calls through to 3932 * {@link #onCreateDialog(int)} for compatibility. 3933 * 3934 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3935 * or later, consider instead using a {@link DialogFragment} instead.</em> 3936 * 3937 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3938 * this method the first time, and hang onto it thereafter. Any dialog 3939 * that is created by this method will automatically be saved and restored 3940 * for you, including whether it is showing. 3941 * 3942 * <p>If you would like the activity to manage saving and restoring dialogs 3943 * for you, you should override this method and handle any ids that are 3944 * passed to {@link #showDialog}. 3945 * 3946 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3947 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3948 * 3949 * @param id The id of the dialog. 3950 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3951 * @return The dialog. If you return null, the dialog will not be created. 3952 * 3953 * @see #onPrepareDialog(int, Dialog, Bundle) 3954 * @see #showDialog(int, Bundle) 3955 * @see #dismissDialog(int) 3956 * @see #removeDialog(int) 3957 * 3958 * @deprecated Use the new {@link DialogFragment} class with 3959 * {@link FragmentManager} instead; this is also 3960 * available on older platforms through the Android compatibility package. 3961 */ 3962 @Nullable 3963 @Deprecated 3964 protected Dialog onCreateDialog(int id, Bundle args) { 3965 return onCreateDialog(id); 3966 } 3967 3968 /** 3969 * @deprecated Old no-arguments version of 3970 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3971 */ 3972 @Deprecated 3973 protected void onPrepareDialog(int id, Dialog dialog) { 3974 dialog.setOwnerActivity(this); 3975 } 3976 3977 /** 3978 * Provides an opportunity to prepare a managed dialog before it is being 3979 * shown. The default implementation calls through to 3980 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3981 * 3982 * <p> 3983 * Override this if you need to update a managed dialog based on the state 3984 * of the application each time it is shown. For example, a time picker 3985 * dialog might want to be updated with the current time. You should call 3986 * through to the superclass's implementation. The default implementation 3987 * will set this Activity as the owner activity on the Dialog. 3988 * 3989 * @param id The id of the managed dialog. 3990 * @param dialog The dialog. 3991 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3992 * @see #onCreateDialog(int, Bundle) 3993 * @see #showDialog(int) 3994 * @see #dismissDialog(int) 3995 * @see #removeDialog(int) 3996 * 3997 * @deprecated Use the new {@link DialogFragment} class with 3998 * {@link FragmentManager} instead; this is also 3999 * available on older platforms through the Android compatibility package. 4000 */ 4001 @Deprecated 4002 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 4003 onPrepareDialog(id, dialog); 4004 } 4005 4006 /** 4007 * Simple version of {@link #showDialog(int, Bundle)} that does not 4008 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 4009 * with null arguments. 4010 * 4011 * @deprecated Use the new {@link DialogFragment} class with 4012 * {@link FragmentManager} instead; this is also 4013 * available on older platforms through the Android compatibility package. 4014 */ 4015 @Deprecated 4016 public final void showDialog(int id) { 4017 showDialog(id, null); 4018 } 4019 4020 /** 4021 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 4022 * will be made with the same id the first time this is called for a given 4023 * id. From thereafter, the dialog will be automatically saved and restored. 4024 * 4025 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 4026 * or later, consider instead using a {@link DialogFragment} instead.</em> 4027 * 4028 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 4029 * be made to provide an opportunity to do any timely preparation. 4030 * 4031 * @param id The id of the managed dialog. 4032 * @param args Arguments to pass through to the dialog. These will be saved 4033 * and restored for you. Note that if the dialog is already created, 4034 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 4035 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 4036 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 4037 * @return Returns true if the Dialog was created; false is returned if 4038 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 4039 * 4040 * @see Dialog 4041 * @see #onCreateDialog(int, Bundle) 4042 * @see #onPrepareDialog(int, Dialog, Bundle) 4043 * @see #dismissDialog(int) 4044 * @see #removeDialog(int) 4045 * 4046 * @deprecated Use the new {@link DialogFragment} class with 4047 * {@link FragmentManager} instead; this is also 4048 * available on older platforms through the Android compatibility package. 4049 */ 4050 @Deprecated 4051 public final boolean showDialog(int id, Bundle args) { 4052 if (mManagedDialogs == null) { 4053 mManagedDialogs = new SparseArray<ManagedDialog>(); 4054 } 4055 ManagedDialog md = mManagedDialogs.get(id); 4056 if (md == null) { 4057 md = new ManagedDialog(); 4058 md.mDialog = createDialog(id, null, args); 4059 if (md.mDialog == null) { 4060 return false; 4061 } 4062 mManagedDialogs.put(id, md); 4063 } 4064 4065 md.mArgs = args; 4066 onPrepareDialog(id, md.mDialog, args); 4067 md.mDialog.show(); 4068 return true; 4069 } 4070 4071 /** 4072 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 4073 * 4074 * @param id The id of the managed dialog. 4075 * 4076 * @throws IllegalArgumentException if the id was not previously shown via 4077 * {@link #showDialog(int)}. 4078 * 4079 * @see #onCreateDialog(int, Bundle) 4080 * @see #onPrepareDialog(int, Dialog, Bundle) 4081 * @see #showDialog(int) 4082 * @see #removeDialog(int) 4083 * 4084 * @deprecated Use the new {@link DialogFragment} class with 4085 * {@link FragmentManager} instead; this is also 4086 * available on older platforms through the Android compatibility package. 4087 */ 4088 @Deprecated 4089 public final void dismissDialog(int id) { 4090 if (mManagedDialogs == null) { 4091 throw missingDialog(id); 4092 } 4093 4094 final ManagedDialog md = mManagedDialogs.get(id); 4095 if (md == null) { 4096 throw missingDialog(id); 4097 } 4098 md.mDialog.dismiss(); 4099 } 4100 4101 /** 4102 * Creates an exception to throw if a user passed in a dialog id that is 4103 * unexpected. 4104 */ 4105 private IllegalArgumentException missingDialog(int id) { 4106 return new IllegalArgumentException("no dialog with id " + id + " was ever " 4107 + "shown via Activity#showDialog"); 4108 } 4109 4110 /** 4111 * Removes any internal references to a dialog managed by this Activity. 4112 * If the dialog is showing, it will dismiss it as part of the clean up. 4113 * 4114 * <p>This can be useful if you know that you will never show a dialog again and 4115 * want to avoid the overhead of saving and restoring it in the future. 4116 * 4117 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 4118 * will not throw an exception if you try to remove an ID that does not 4119 * currently have an associated dialog.</p> 4120 * 4121 * @param id The id of the managed dialog. 4122 * 4123 * @see #onCreateDialog(int, Bundle) 4124 * @see #onPrepareDialog(int, Dialog, Bundle) 4125 * @see #showDialog(int) 4126 * @see #dismissDialog(int) 4127 * 4128 * @deprecated Use the new {@link DialogFragment} class with 4129 * {@link FragmentManager} instead; this is also 4130 * available on older platforms through the Android compatibility package. 4131 */ 4132 @Deprecated 4133 public final void removeDialog(int id) { 4134 if (mManagedDialogs != null) { 4135 final ManagedDialog md = mManagedDialogs.get(id); 4136 if (md != null) { 4137 md.mDialog.dismiss(); 4138 mManagedDialogs.remove(id); 4139 } 4140 } 4141 } 4142 4143 /** 4144 * This hook is called when the user signals the desire to start a search. 4145 * 4146 * <p>You can use this function as a simple way to launch the search UI, in response to a 4147 * menu item, search button, or other widgets within your activity. Unless overidden, 4148 * calling this function is the same as calling 4149 * {@link #startSearch startSearch(null, false, null, false)}, which launches 4150 * search for the current activity as specified in its manifest, see {@link SearchManager}. 4151 * 4152 * <p>You can override this function to force global search, e.g. in response to a dedicated 4153 * search key, or to block search entirely (by simply returning false). 4154 * 4155 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 4156 * implementation changes to simply return false and you must supply your own custom 4157 * implementation if you want to support search.</p> 4158 * 4159 * @param searchEvent The {@link SearchEvent} that signaled this search. 4160 * @return Returns {@code true} if search launched, and {@code false} if the activity does 4161 * not respond to search. The default implementation always returns {@code true}, except 4162 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 4163 * 4164 * @see android.app.SearchManager 4165 */ 4166 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 4167 mSearchEvent = searchEvent; 4168 boolean result = onSearchRequested(); 4169 mSearchEvent = null; 4170 return result; 4171 } 4172 4173 /** 4174 * @see #onSearchRequested(SearchEvent) 4175 */ 4176 public boolean onSearchRequested() { 4177 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 4178 != Configuration.UI_MODE_TYPE_TELEVISION) { 4179 startSearch(null, false, null, false); 4180 return true; 4181 } else { 4182 return false; 4183 } 4184 } 4185 4186 /** 4187 * During the onSearchRequested() callbacks, this function will return the 4188 * {@link SearchEvent} that triggered the callback, if it exists. 4189 * 4190 * @return SearchEvent The SearchEvent that triggered the {@link 4191 * #onSearchRequested} callback. 4192 */ 4193 public final SearchEvent getSearchEvent() { 4194 return mSearchEvent; 4195 } 4196 4197 /** 4198 * This hook is called to launch the search UI. 4199 * 4200 * <p>It is typically called from onSearchRequested(), either directly from 4201 * Activity.onSearchRequested() or from an overridden version in any given 4202 * Activity. If your goal is simply to activate search, it is preferred to call 4203 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 4204 * is to inject specific data such as context data, it is preferred to <i>override</i> 4205 * onSearchRequested(), so that any callers to it will benefit from the override. 4206 * 4207 * @param initialQuery Any non-null non-empty string will be inserted as 4208 * pre-entered text in the search query box. 4209 * @param selectInitialQuery If true, the initial query will be preselected, which means that 4210 * any further typing will replace it. This is useful for cases where an entire pre-formed 4211 * query is being inserted. If false, the selection point will be placed at the end of the 4212 * inserted query. This is useful when the inserted query is text that the user entered, 4213 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 4214 * if initialQuery is a non-empty string.</i> 4215 * @param appSearchData An application can insert application-specific 4216 * context here, in order to improve quality or specificity of its own 4217 * searches. This data will be returned with SEARCH intent(s). Null if 4218 * no extra data is required. 4219 * @param globalSearch If false, this will only launch the search that has been specifically 4220 * defined by the application (which is usually defined as a local search). If no default 4221 * search is defined in the current application or activity, global search will be launched. 4222 * If true, this will always launch a platform-global (e.g. web-based) search instead. 4223 * 4224 * @see android.app.SearchManager 4225 * @see #onSearchRequested 4226 */ 4227 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 4228 @Nullable Bundle appSearchData, boolean globalSearch) { 4229 ensureSearchManager(); 4230 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 4231 appSearchData, globalSearch); 4232 } 4233 4234 /** 4235 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 4236 * the search dialog. Made available for testing purposes. 4237 * 4238 * @param query The query to trigger. If empty, the request will be ignored. 4239 * @param appSearchData An application can insert application-specific 4240 * context here, in order to improve quality or specificity of its own 4241 * searches. This data will be returned with SEARCH intent(s). Null if 4242 * no extra data is required. 4243 */ 4244 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 4245 ensureSearchManager(); 4246 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 4247 } 4248 4249 /** 4250 * Request that key events come to this activity. Use this if your 4251 * activity has no views with focus, but the activity still wants 4252 * a chance to process key events. 4253 * 4254 * @see android.view.Window#takeKeyEvents 4255 */ 4256 public void takeKeyEvents(boolean get) { 4257 getWindow().takeKeyEvents(get); 4258 } 4259 4260 /** 4261 * Enable extended window features. This is a convenience for calling 4262 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 4263 * 4264 * @param featureId The desired feature as defined in 4265 * {@link android.view.Window}. 4266 * @return Returns true if the requested feature is supported and now 4267 * enabled. 4268 * 4269 * @see android.view.Window#requestFeature 4270 */ 4271 public final boolean requestWindowFeature(int featureId) { 4272 return getWindow().requestFeature(featureId); 4273 } 4274 4275 /** 4276 * Convenience for calling 4277 * {@link android.view.Window#setFeatureDrawableResource}. 4278 */ 4279 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 4280 getWindow().setFeatureDrawableResource(featureId, resId); 4281 } 4282 4283 /** 4284 * Convenience for calling 4285 * {@link android.view.Window#setFeatureDrawableUri}. 4286 */ 4287 public final void setFeatureDrawableUri(int featureId, Uri uri) { 4288 getWindow().setFeatureDrawableUri(featureId, uri); 4289 } 4290 4291 /** 4292 * Convenience for calling 4293 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 4294 */ 4295 public final void setFeatureDrawable(int featureId, Drawable drawable) { 4296 getWindow().setFeatureDrawable(featureId, drawable); 4297 } 4298 4299 /** 4300 * Convenience for calling 4301 * {@link android.view.Window#setFeatureDrawableAlpha}. 4302 */ 4303 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 4304 getWindow().setFeatureDrawableAlpha(featureId, alpha); 4305 } 4306 4307 /** 4308 * Convenience for calling 4309 * {@link android.view.Window#getLayoutInflater}. 4310 */ 4311 @NonNull 4312 public LayoutInflater getLayoutInflater() { 4313 return getWindow().getLayoutInflater(); 4314 } 4315 4316 /** 4317 * Returns a {@link MenuInflater} with this context. 4318 */ 4319 @NonNull 4320 public MenuInflater getMenuInflater() { 4321 // Make sure that action views can get an appropriate theme. 4322 if (mMenuInflater == null) { 4323 initWindowDecorActionBar(); 4324 if (mActionBar != null) { 4325 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 4326 } else { 4327 mMenuInflater = new MenuInflater(this); 4328 } 4329 } 4330 return mMenuInflater; 4331 } 4332 4333 @Override 4334 public void setTheme(int resid) { 4335 super.setTheme(resid); 4336 mWindow.setTheme(resid); 4337 } 4338 4339 @Override 4340 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 4341 boolean first) { 4342 if (mParent == null) { 4343 super.onApplyThemeResource(theme, resid, first); 4344 } else { 4345 try { 4346 theme.setTo(mParent.getTheme()); 4347 } catch (Exception e) { 4348 // Empty 4349 } 4350 theme.applyStyle(resid, false); 4351 } 4352 4353 // Get the primary color and update the TaskDescription for this activity 4354 TypedArray a = theme.obtainStyledAttributes( 4355 com.android.internal.R.styleable.ActivityTaskDescription); 4356 if (mTaskDescription.getPrimaryColor() == 0) { 4357 int colorPrimary = a.getColor( 4358 com.android.internal.R.styleable.ActivityTaskDescription_colorPrimary, 0); 4359 if (colorPrimary != 0 && Color.alpha(colorPrimary) == 0xFF) { 4360 mTaskDescription.setPrimaryColor(colorPrimary); 4361 } 4362 } 4363 4364 int colorBackground = a.getColor( 4365 com.android.internal.R.styleable.ActivityTaskDescription_colorBackground, 0); 4366 if (colorBackground != 0 && Color.alpha(colorBackground) == 0xFF) { 4367 mTaskDescription.setBackgroundColor(colorBackground); 4368 } 4369 4370 final int statusBarColor = a.getColor( 4371 com.android.internal.R.styleable.ActivityTaskDescription_statusBarColor, 0); 4372 if (statusBarColor != 0) { 4373 mTaskDescription.setStatusBarColor(statusBarColor); 4374 } 4375 4376 final int navigationBarColor = a.getColor( 4377 com.android.internal.R.styleable.ActivityTaskDescription_navigationBarColor, 0); 4378 if (navigationBarColor != 0) { 4379 mTaskDescription.setNavigationBarColor(navigationBarColor); 4380 } 4381 4382 a.recycle(); 4383 setTaskDescription(mTaskDescription); 4384 } 4385 4386 /** 4387 * Requests permissions to be granted to this application. These permissions 4388 * must be requested in your manifest, they should not be granted to your app, 4389 * and they should have protection level {@link android.content.pm.PermissionInfo 4390 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 4391 * the platform or a third-party app. 4392 * <p> 4393 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 4394 * are granted at install time if requested in the manifest. Signature permissions 4395 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 4396 * install time if requested in the manifest and the signature of your app matches 4397 * the signature of the app declaring the permissions. 4398 * </p> 4399 * <p> 4400 * If your app does not have the requested permissions the user will be presented 4401 * with UI for accepting them. After the user has accepted or rejected the 4402 * requested permissions you will receive a callback on {@link 4403 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4404 * permissions were granted or not. 4405 * </p> 4406 * <p> 4407 * Note that requesting a permission does not guarantee it will be granted and 4408 * your app should be able to run without having this permission. 4409 * </p> 4410 * <p> 4411 * This method may start an activity allowing the user to choose which permissions 4412 * to grant and which to reject. Hence, you should be prepared that your activity 4413 * may be paused and resumed. Further, granting some permissions may require 4414 * a restart of you application. In such a case, the system will recreate the 4415 * activity stack before delivering the result to {@link 4416 * #onRequestPermissionsResult(int, String[], int[])}. 4417 * </p> 4418 * <p> 4419 * When checking whether you have a permission you should use {@link 4420 * #checkSelfPermission(String)}. 4421 * </p> 4422 * <p> 4423 * Calling this API for permissions already granted to your app would show UI 4424 * to the user to decide whether the app can still hold these permissions. This 4425 * can be useful if the way your app uses data guarded by the permissions 4426 * changes significantly. 4427 * </p> 4428 * <p> 4429 * You cannot request a permission if your activity sets {@link 4430 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4431 * <code>true</code> because in this case the activity would not receive 4432 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4433 * </p> 4434 * <p> 4435 * The <a href="http://developer.android.com/samples/RuntimePermissions/index.html"> 4436 * RuntimePermissions</a> sample app demonstrates how to use this method to 4437 * request permissions at run time. 4438 * </p> 4439 * 4440 * @param permissions The requested permissions. Must me non-null and not empty. 4441 * @param requestCode Application specific request code to match with a result 4442 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4443 * Should be >= 0. 4444 * 4445 * @throws IllegalArgumentException if requestCode is negative. 4446 * 4447 * @see #onRequestPermissionsResult(int, String[], int[]) 4448 * @see #checkSelfPermission(String) 4449 * @see #shouldShowRequestPermissionRationale(String) 4450 */ 4451 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4452 if (requestCode < 0) { 4453 throw new IllegalArgumentException("requestCode should be >= 0"); 4454 } 4455 if (mHasCurrentPermissionsRequest) { 4456 Log.w(TAG, "Can request only one set of permissions at a time"); 4457 // Dispatch the callback with empty arrays which means a cancellation. 4458 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4459 return; 4460 } 4461 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4462 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4463 mHasCurrentPermissionsRequest = true; 4464 } 4465 4466 /** 4467 * Callback for the result from requesting permissions. This method 4468 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4469 * <p> 4470 * <strong>Note:</strong> It is possible that the permissions request interaction 4471 * with the user is interrupted. In this case you will receive empty permissions 4472 * and results arrays which should be treated as a cancellation. 4473 * </p> 4474 * 4475 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4476 * @param permissions The requested permissions. Never null. 4477 * @param grantResults The grant results for the corresponding permissions 4478 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4479 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4480 * 4481 * @see #requestPermissions(String[], int) 4482 */ 4483 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4484 @NonNull int[] grantResults) { 4485 /* callback - no nothing */ 4486 } 4487 4488 /** 4489 * Gets whether you should show UI with rationale for requesting a permission. 4490 * You should do this only if you do not have the permission and the context in 4491 * which the permission is requested does not clearly communicate to the user 4492 * what would be the benefit from granting this permission. 4493 * <p> 4494 * For example, if you write a camera app, requesting the camera permission 4495 * would be expected by the user and no rationale for why it is requested is 4496 * needed. If however, the app needs location for tagging photos then a non-tech 4497 * savvy user may wonder how location is related to taking photos. In this case 4498 * you may choose to show UI with rationale of requesting this permission. 4499 * </p> 4500 * 4501 * @param permission A permission your app wants to request. 4502 * @return Whether you can show permission rationale UI. 4503 * 4504 * @see #checkSelfPermission(String) 4505 * @see #requestPermissions(String[], int) 4506 * @see #onRequestPermissionsResult(int, String[], int[]) 4507 */ 4508 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4509 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4510 } 4511 4512 /** 4513 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4514 * with no options. 4515 * 4516 * @param intent The intent to start. 4517 * @param requestCode If >= 0, this code will be returned in 4518 * onActivityResult() when the activity exits. 4519 * 4520 * @throws android.content.ActivityNotFoundException 4521 * 4522 * @see #startActivity 4523 */ 4524 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4525 startActivityForResult(intent, requestCode, null); 4526 } 4527 4528 /** 4529 * Launch an activity for which you would like a result when it finished. 4530 * When this activity exits, your 4531 * onActivityResult() method will be called with the given requestCode. 4532 * Using a negative requestCode is the same as calling 4533 * {@link #startActivity} (the activity is not launched as a sub-activity). 4534 * 4535 * <p>Note that this method should only be used with Intent protocols 4536 * that are defined to return a result. In other protocols (such as 4537 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4538 * not get the result when you expect. For example, if the activity you 4539 * are launching uses {@link Intent#FLAG_ACTIVITY_NEW_TASK}, it will not 4540 * run in your task and thus you will immediately receive a cancel result. 4541 * 4542 * <p>As a special case, if you call startActivityForResult() with a requestCode 4543 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4544 * activity, then your window will not be displayed until a result is 4545 * returned back from the started activity. This is to avoid visible 4546 * flickering when redirecting to another activity. 4547 * 4548 * <p>This method throws {@link android.content.ActivityNotFoundException} 4549 * if there was no Activity found to run the given Intent. 4550 * 4551 * @param intent The intent to start. 4552 * @param requestCode If >= 0, this code will be returned in 4553 * onActivityResult() when the activity exits. 4554 * @param options Additional options for how the Activity should be started. 4555 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4556 * Context.startActivity(Intent, Bundle)} for more details. 4557 * 4558 * @throws android.content.ActivityNotFoundException 4559 * 4560 * @see #startActivity 4561 */ 4562 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4563 @Nullable Bundle options) { 4564 if (mParent == null) { 4565 options = transferSpringboardActivityOptions(options); 4566 Instrumentation.ActivityResult ar = 4567 mInstrumentation.execStartActivity( 4568 this, mMainThread.getApplicationThread(), mToken, this, 4569 intent, requestCode, options); 4570 if (ar != null) { 4571 mMainThread.sendActivityResult( 4572 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4573 ar.getResultData()); 4574 } 4575 if (requestCode >= 0) { 4576 // If this start is requesting a result, we can avoid making 4577 // the activity visible until the result is received. Setting 4578 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4579 // activity hidden during this time, to avoid flickering. 4580 // This can only be done when a result is requested because 4581 // that guarantees we will get information back when the 4582 // activity is finished, no matter what happens to it. 4583 mStartedActivity = true; 4584 } 4585 4586 cancelInputsAndStartExitTransition(options); 4587 // TODO Consider clearing/flushing other event sources and events for child windows. 4588 } else { 4589 if (options != null) { 4590 mParent.startActivityFromChild(this, intent, requestCode, options); 4591 } else { 4592 // Note we want to go through this method for compatibility with 4593 // existing applications that may have overridden it. 4594 mParent.startActivityFromChild(this, intent, requestCode); 4595 } 4596 } 4597 } 4598 4599 /** 4600 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4601 * 4602 * @param options The ActivityOptions bundle used to start an Activity. 4603 */ 4604 private void cancelInputsAndStartExitTransition(Bundle options) { 4605 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4606 if (decor != null) { 4607 decor.cancelPendingInputEvents(); 4608 } 4609 if (options != null && !isTopOfTask()) { 4610 mActivityTransitionState.startExitOutTransition(this, options); 4611 } 4612 } 4613 4614 /** 4615 * Returns whether there are any activity transitions currently running on this 4616 * activity. A return value of {@code true} can mean that either an enter or 4617 * exit transition is running, including whether the background of the activity 4618 * is animating as a part of that transition. 4619 * 4620 * @return true if a transition is currently running on this activity, false otherwise. 4621 */ 4622 public boolean isActivityTransitionRunning() { 4623 return mActivityTransitionState.isTransitionRunning(); 4624 } 4625 4626 private Bundle transferSpringboardActivityOptions(Bundle options) { 4627 if (options == null && (mWindow != null && !mWindow.isActive())) { 4628 final ActivityOptions activityOptions = getActivityOptions(); 4629 if (activityOptions != null && 4630 activityOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { 4631 return activityOptions.toBundle(); 4632 } 4633 } 4634 return options; 4635 } 4636 4637 /** 4638 * @hide Implement to provide correct calling token. 4639 */ 4640 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4641 startActivityForResultAsUser(intent, requestCode, null, user); 4642 } 4643 4644 /** 4645 * @hide Implement to provide correct calling token. 4646 */ 4647 public void startActivityForResultAsUser(Intent intent, int requestCode, 4648 @Nullable Bundle options, UserHandle user) { 4649 startActivityForResultAsUser(intent, mEmbeddedID, requestCode, options, user); 4650 } 4651 4652 /** 4653 * @hide Implement to provide correct calling token. 4654 */ 4655 public void startActivityForResultAsUser(Intent intent, String resultWho, int requestCode, 4656 @Nullable Bundle options, UserHandle user) { 4657 if (mParent != null) { 4658 throw new RuntimeException("Can't be called from a child"); 4659 } 4660 options = transferSpringboardActivityOptions(options); 4661 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4662 this, mMainThread.getApplicationThread(), mToken, resultWho, intent, requestCode, 4663 options, user); 4664 if (ar != null) { 4665 mMainThread.sendActivityResult( 4666 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4667 } 4668 if (requestCode >= 0) { 4669 // If this start is requesting a result, we can avoid making 4670 // the activity visible until the result is received. Setting 4671 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4672 // activity hidden during this time, to avoid flickering. 4673 // This can only be done when a result is requested because 4674 // that guarantees we will get information back when the 4675 // activity is finished, no matter what happens to it. 4676 mStartedActivity = true; 4677 } 4678 4679 cancelInputsAndStartExitTransition(options); 4680 } 4681 4682 /** 4683 * @hide Implement to provide correct calling token. 4684 */ 4685 public void startActivityAsUser(Intent intent, UserHandle user) { 4686 startActivityAsUser(intent, null, user); 4687 } 4688 4689 /** 4690 * @hide Implement to provide correct calling token. 4691 */ 4692 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4693 if (mParent != null) { 4694 throw new RuntimeException("Can't be called from a child"); 4695 } 4696 options = transferSpringboardActivityOptions(options); 4697 Instrumentation.ActivityResult ar = 4698 mInstrumentation.execStartActivity( 4699 this, mMainThread.getApplicationThread(), mToken, mEmbeddedID, 4700 intent, -1, options, user); 4701 if (ar != null) { 4702 mMainThread.sendActivityResult( 4703 mToken, mEmbeddedID, -1, ar.getResultCode(), 4704 ar.getResultData()); 4705 } 4706 cancelInputsAndStartExitTransition(options); 4707 } 4708 4709 /** 4710 * Start a new activity as if it was started by the activity that started our 4711 * current activity. This is for the resolver and chooser activities, which operate 4712 * as intermediaries that dispatch their intent to the target the user selects -- to 4713 * do this, they must perform all security checks including permission grants as if 4714 * their launch had come from the original activity. 4715 * @param intent The Intent to start. 4716 * @param options ActivityOptions or null. 4717 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4718 * caller it is doing the start is, is actually allowed to start the target activity. 4719 * If you set this to true, you must set an explicit component in the Intent and do any 4720 * appropriate security checks yourself. 4721 * @param userId The user the new activity should run as. 4722 * @hide 4723 */ 4724 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4725 boolean ignoreTargetSecurity, int userId) { 4726 if (mParent != null) { 4727 throw new RuntimeException("Can't be called from a child"); 4728 } 4729 options = transferSpringboardActivityOptions(options); 4730 Instrumentation.ActivityResult ar = 4731 mInstrumentation.execStartActivityAsCaller( 4732 this, mMainThread.getApplicationThread(), mToken, this, 4733 intent, -1, options, ignoreTargetSecurity, userId); 4734 if (ar != null) { 4735 mMainThread.sendActivityResult( 4736 mToken, mEmbeddedID, -1, ar.getResultCode(), 4737 ar.getResultData()); 4738 } 4739 cancelInputsAndStartExitTransition(options); 4740 } 4741 4742 /** 4743 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4744 * Intent, int, int, int, Bundle)} with no options. 4745 * 4746 * @param intent The IntentSender to launch. 4747 * @param requestCode If >= 0, this code will be returned in 4748 * onActivityResult() when the activity exits. 4749 * @param fillInIntent If non-null, this will be provided as the 4750 * intent parameter to {@link IntentSender#sendIntent}. 4751 * @param flagsMask Intent flags in the original IntentSender that you 4752 * would like to change. 4753 * @param flagsValues Desired values for any bits set in 4754 * <var>flagsMask</var> 4755 * @param extraFlags Always set to 0. 4756 */ 4757 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4758 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4759 throws IntentSender.SendIntentException { 4760 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4761 flagsValues, extraFlags, null); 4762 } 4763 4764 /** 4765 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4766 * to use a IntentSender to describe the activity to be started. If 4767 * the IntentSender is for an activity, that activity will be started 4768 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4769 * here; otherwise, its associated action will be executed (such as 4770 * sending a broadcast) as if you had called 4771 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4772 * 4773 * @param intent The IntentSender to launch. 4774 * @param requestCode If >= 0, this code will be returned in 4775 * onActivityResult() when the activity exits. 4776 * @param fillInIntent If non-null, this will be provided as the 4777 * intent parameter to {@link IntentSender#sendIntent}. 4778 * @param flagsMask Intent flags in the original IntentSender that you 4779 * would like to change. 4780 * @param flagsValues Desired values for any bits set in 4781 * <var>flagsMask</var> 4782 * @param extraFlags Always set to 0. 4783 * @param options Additional options for how the Activity should be started. 4784 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4785 * Context.startActivity(Intent, Bundle)} for more details. If options 4786 * have also been supplied by the IntentSender, options given here will 4787 * override any that conflict with those given by the IntentSender. 4788 */ 4789 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4790 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4791 Bundle options) throws IntentSender.SendIntentException { 4792 if (mParent == null) { 4793 startIntentSenderForResultInner(intent, mEmbeddedID, requestCode, fillInIntent, 4794 flagsMask, flagsValues, options); 4795 } else if (options != null) { 4796 mParent.startIntentSenderFromChild(this, intent, requestCode, 4797 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4798 } else { 4799 // Note we want to go through this call for compatibility with 4800 // existing applications that may have overridden the method. 4801 mParent.startIntentSenderFromChild(this, intent, requestCode, 4802 fillInIntent, flagsMask, flagsValues, extraFlags); 4803 } 4804 } 4805 4806 private void startIntentSenderForResultInner(IntentSender intent, String who, int requestCode, 4807 Intent fillInIntent, int flagsMask, int flagsValues, 4808 Bundle options) 4809 throws IntentSender.SendIntentException { 4810 try { 4811 String resolvedType = null; 4812 if (fillInIntent != null) { 4813 fillInIntent.migrateExtraStreamToClipData(); 4814 fillInIntent.prepareToLeaveProcess(this); 4815 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4816 } 4817 int result = ActivityManager.getService() 4818 .startActivityIntentSender(mMainThread.getApplicationThread(), 4819 intent != null ? intent.getTarget() : null, 4820 intent != null ? intent.getWhitelistToken() : null, 4821 fillInIntent, resolvedType, mToken, who, 4822 requestCode, flagsMask, flagsValues, options); 4823 if (result == ActivityManager.START_CANCELED) { 4824 throw new IntentSender.SendIntentException(); 4825 } 4826 Instrumentation.checkStartActivityResult(result, null); 4827 } catch (RemoteException e) { 4828 } 4829 if (requestCode >= 0) { 4830 // If this start is requesting a result, we can avoid making 4831 // the activity visible until the result is received. Setting 4832 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4833 // activity hidden during this time, to avoid flickering. 4834 // This can only be done when a result is requested because 4835 // that guarantees we will get information back when the 4836 // activity is finished, no matter what happens to it. 4837 mStartedActivity = true; 4838 } 4839 } 4840 4841 /** 4842 * Same as {@link #startActivity(Intent, Bundle)} with no options 4843 * specified. 4844 * 4845 * @param intent The intent to start. 4846 * 4847 * @throws android.content.ActivityNotFoundException 4848 * 4849 * @see #startActivity(Intent, Bundle) 4850 * @see #startActivityForResult 4851 */ 4852 @Override 4853 public void startActivity(Intent intent) { 4854 this.startActivity(intent, null); 4855 } 4856 4857 /** 4858 * Launch a new activity. You will not receive any information about when 4859 * the activity exits. This implementation overrides the base version, 4860 * providing information about 4861 * the activity performing the launch. Because of this additional 4862 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4863 * required; if not specified, the new activity will be added to the 4864 * task of the caller. 4865 * 4866 * <p>This method throws {@link android.content.ActivityNotFoundException} 4867 * if there was no Activity found to run the given Intent. 4868 * 4869 * @param intent The intent to start. 4870 * @param options Additional options for how the Activity should be started. 4871 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4872 * Context.startActivity(Intent, Bundle)} for more details. 4873 * 4874 * @throws android.content.ActivityNotFoundException 4875 * 4876 * @see #startActivity(Intent) 4877 * @see #startActivityForResult 4878 */ 4879 @Override 4880 public void startActivity(Intent intent, @Nullable Bundle options) { 4881 if (options != null) { 4882 startActivityForResult(intent, -1, options); 4883 } else { 4884 // Note we want to go through this call for compatibility with 4885 // applications that may have overridden the method. 4886 startActivityForResult(intent, -1); 4887 } 4888 } 4889 4890 /** 4891 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4892 * specified. 4893 * 4894 * @param intents The intents to start. 4895 * 4896 * @throws android.content.ActivityNotFoundException 4897 * 4898 * @see #startActivities(Intent[], Bundle) 4899 * @see #startActivityForResult 4900 */ 4901 @Override 4902 public void startActivities(Intent[] intents) { 4903 startActivities(intents, null); 4904 } 4905 4906 /** 4907 * Launch a new activity. You will not receive any information about when 4908 * the activity exits. This implementation overrides the base version, 4909 * providing information about 4910 * the activity performing the launch. Because of this additional 4911 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4912 * required; if not specified, the new activity will be added to the 4913 * task of the caller. 4914 * 4915 * <p>This method throws {@link android.content.ActivityNotFoundException} 4916 * if there was no Activity found to run the given Intent. 4917 * 4918 * @param intents The intents to start. 4919 * @param options Additional options for how the Activity should be started. 4920 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4921 * Context.startActivity(Intent, Bundle)} for more details. 4922 * 4923 * @throws android.content.ActivityNotFoundException 4924 * 4925 * @see #startActivities(Intent[]) 4926 * @see #startActivityForResult 4927 */ 4928 @Override 4929 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4930 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4931 mToken, this, intents, options); 4932 } 4933 4934 /** 4935 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4936 * with no options. 4937 * 4938 * @param intent The IntentSender to launch. 4939 * @param fillInIntent If non-null, this will be provided as the 4940 * intent parameter to {@link IntentSender#sendIntent}. 4941 * @param flagsMask Intent flags in the original IntentSender that you 4942 * would like to change. 4943 * @param flagsValues Desired values for any bits set in 4944 * <var>flagsMask</var> 4945 * @param extraFlags Always set to 0. 4946 */ 4947 public void startIntentSender(IntentSender intent, 4948 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4949 throws IntentSender.SendIntentException { 4950 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4951 extraFlags, null); 4952 } 4953 4954 /** 4955 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4956 * to start; see 4957 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4958 * for more information. 4959 * 4960 * @param intent The IntentSender to launch. 4961 * @param fillInIntent If non-null, this will be provided as the 4962 * intent parameter to {@link IntentSender#sendIntent}. 4963 * @param flagsMask Intent flags in the original IntentSender that you 4964 * would like to change. 4965 * @param flagsValues Desired values for any bits set in 4966 * <var>flagsMask</var> 4967 * @param extraFlags Always set to 0. 4968 * @param options Additional options for how the Activity should be started. 4969 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4970 * Context.startActivity(Intent, Bundle)} for more details. If options 4971 * have also been supplied by the IntentSender, options given here will 4972 * override any that conflict with those given by the IntentSender. 4973 */ 4974 public void startIntentSender(IntentSender intent, 4975 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4976 Bundle options) throws IntentSender.SendIntentException { 4977 if (options != null) { 4978 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4979 flagsValues, extraFlags, options); 4980 } else { 4981 // Note we want to go through this call for compatibility with 4982 // applications that may have overridden the method. 4983 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4984 flagsValues, extraFlags); 4985 } 4986 } 4987 4988 /** 4989 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4990 * with no options. 4991 * 4992 * @param intent The intent to start. 4993 * @param requestCode If >= 0, this code will be returned in 4994 * onActivityResult() when the activity exits, as described in 4995 * {@link #startActivityForResult}. 4996 * 4997 * @return If a new activity was launched then true is returned; otherwise 4998 * false is returned and you must handle the Intent yourself. 4999 * 5000 * @see #startActivity 5001 * @see #startActivityForResult 5002 */ 5003 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 5004 int requestCode) { 5005 return startActivityIfNeeded(intent, requestCode, null); 5006 } 5007 5008 /** 5009 * A special variation to launch an activity only if a new activity 5010 * instance is needed to handle the given Intent. In other words, this is 5011 * just like {@link #startActivityForResult(Intent, int)} except: if you are 5012 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 5013 * singleTask or singleTop 5014 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 5015 * and the activity 5016 * that handles <var>intent</var> is the same as your currently running 5017 * activity, then a new instance is not needed. In this case, instead of 5018 * the normal behavior of calling {@link #onNewIntent} this function will 5019 * return and you can handle the Intent yourself. 5020 * 5021 * <p>This function can only be called from a top-level activity; if it is 5022 * called from a child activity, a runtime exception will be thrown. 5023 * 5024 * @param intent The intent to start. 5025 * @param requestCode If >= 0, this code will be returned in 5026 * onActivityResult() when the activity exits, as described in 5027 * {@link #startActivityForResult}. 5028 * @param options Additional options for how the Activity should be started. 5029 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5030 * Context.startActivity(Intent, Bundle)} for more details. 5031 * 5032 * @return If a new activity was launched then true is returned; otherwise 5033 * false is returned and you must handle the Intent yourself. 5034 * 5035 * @see #startActivity 5036 * @see #startActivityForResult 5037 */ 5038 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 5039 int requestCode, @Nullable Bundle options) { 5040 if (mParent == null) { 5041 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 5042 try { 5043 Uri referrer = onProvideReferrer(); 5044 if (referrer != null) { 5045 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 5046 } 5047 intent.migrateExtraStreamToClipData(); 5048 intent.prepareToLeaveProcess(this); 5049 result = ActivityManager.getService() 5050 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 5051 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 5052 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 5053 null, options); 5054 } catch (RemoteException e) { 5055 // Empty 5056 } 5057 5058 Instrumentation.checkStartActivityResult(result, intent); 5059 5060 if (requestCode >= 0) { 5061 // If this start is requesting a result, we can avoid making 5062 // the activity visible until the result is received. Setting 5063 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 5064 // activity hidden during this time, to avoid flickering. 5065 // This can only be done when a result is requested because 5066 // that guarantees we will get information back when the 5067 // activity is finished, no matter what happens to it. 5068 mStartedActivity = true; 5069 } 5070 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 5071 } 5072 5073 throw new UnsupportedOperationException( 5074 "startActivityIfNeeded can only be called from a top-level activity"); 5075 } 5076 5077 /** 5078 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 5079 * no options. 5080 * 5081 * @param intent The intent to dispatch to the next activity. For 5082 * correct behavior, this must be the same as the Intent that started 5083 * your own activity; the only changes you can make are to the extras 5084 * inside of it. 5085 * 5086 * @return Returns a boolean indicating whether there was another Activity 5087 * to start: true if there was a next activity to start, false if there 5088 * wasn't. In general, if true is returned you will then want to call 5089 * finish() on yourself. 5090 */ 5091 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 5092 return startNextMatchingActivity(intent, null); 5093 } 5094 5095 /** 5096 * Special version of starting an activity, for use when you are replacing 5097 * other activity components. You can use this to hand the Intent off 5098 * to the next Activity that can handle it. You typically call this in 5099 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 5100 * 5101 * @param intent The intent to dispatch to the next activity. For 5102 * correct behavior, this must be the same as the Intent that started 5103 * your own activity; the only changes you can make are to the extras 5104 * inside of it. 5105 * @param options Additional options for how the Activity should be started. 5106 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5107 * Context.startActivity(Intent, Bundle)} for more details. 5108 * 5109 * @return Returns a boolean indicating whether there was another Activity 5110 * to start: true if there was a next activity to start, false if there 5111 * wasn't. In general, if true is returned you will then want to call 5112 * finish() on yourself. 5113 */ 5114 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 5115 @Nullable Bundle options) { 5116 if (mParent == null) { 5117 try { 5118 intent.migrateExtraStreamToClipData(); 5119 intent.prepareToLeaveProcess(this); 5120 return ActivityManager.getService() 5121 .startNextMatchingActivity(mToken, intent, options); 5122 } catch (RemoteException e) { 5123 // Empty 5124 } 5125 return false; 5126 } 5127 5128 throw new UnsupportedOperationException( 5129 "startNextMatchingActivity can only be called from a top-level activity"); 5130 } 5131 5132 /** 5133 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 5134 * with no options. 5135 * 5136 * @param child The activity making the call. 5137 * @param intent The intent to start. 5138 * @param requestCode Reply request code. < 0 if reply is not requested. 5139 * 5140 * @throws android.content.ActivityNotFoundException 5141 * 5142 * @see #startActivity 5143 * @see #startActivityForResult 5144 */ 5145 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5146 int requestCode) { 5147 startActivityFromChild(child, intent, requestCode, null); 5148 } 5149 5150 /** 5151 * This is called when a child activity of this one calls its 5152 * {@link #startActivity} or {@link #startActivityForResult} method. 5153 * 5154 * <p>This method throws {@link android.content.ActivityNotFoundException} 5155 * if there was no Activity found to run the given Intent. 5156 * 5157 * @param child The activity making the call. 5158 * @param intent The intent to start. 5159 * @param requestCode Reply request code. < 0 if reply is not requested. 5160 * @param options Additional options for how the Activity should be started. 5161 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5162 * Context.startActivity(Intent, Bundle)} for more details. 5163 * 5164 * @throws android.content.ActivityNotFoundException 5165 * 5166 * @see #startActivity 5167 * @see #startActivityForResult 5168 */ 5169 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5170 int requestCode, @Nullable Bundle options) { 5171 options = transferSpringboardActivityOptions(options); 5172 Instrumentation.ActivityResult ar = 5173 mInstrumentation.execStartActivity( 5174 this, mMainThread.getApplicationThread(), mToken, child, 5175 intent, requestCode, options); 5176 if (ar != null) { 5177 mMainThread.sendActivityResult( 5178 mToken, child.mEmbeddedID, requestCode, 5179 ar.getResultCode(), ar.getResultData()); 5180 } 5181 cancelInputsAndStartExitTransition(options); 5182 } 5183 5184 /** 5185 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 5186 * with no options. 5187 * 5188 * @param fragment The fragment making the call. 5189 * @param intent The intent to start. 5190 * @param requestCode Reply request code. < 0 if reply is not requested. 5191 * 5192 * @throws android.content.ActivityNotFoundException 5193 * 5194 * @see Fragment#startActivity 5195 * @see Fragment#startActivityForResult 5196 * 5197 * @deprecated Use {@link android.support.v4.app.FragmentActivity#startActivityFromFragment( 5198 * android.support.v4.app.Fragment,Intent,int)} 5199 */ 5200 @Deprecated 5201 public void startActivityFromFragment(@NonNull Fragment fragment, 5202 @RequiresPermission Intent intent, int requestCode) { 5203 startActivityFromFragment(fragment, intent, requestCode, null); 5204 } 5205 5206 /** 5207 * This is called when a Fragment in this activity calls its 5208 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 5209 * method. 5210 * 5211 * <p>This method throws {@link android.content.ActivityNotFoundException} 5212 * if there was no Activity found to run the given Intent. 5213 * 5214 * @param fragment The fragment making the call. 5215 * @param intent The intent to start. 5216 * @param requestCode Reply request code. < 0 if reply is not requested. 5217 * @param options Additional options for how the Activity should be started. 5218 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5219 * Context.startActivity(Intent, Bundle)} for more details. 5220 * 5221 * @throws android.content.ActivityNotFoundException 5222 * 5223 * @see Fragment#startActivity 5224 * @see Fragment#startActivityForResult 5225 * 5226 * @deprecated Use {@link android.support.v4.app.FragmentActivity#startActivityFromFragment( 5227 * android.support.v4.app.Fragment,Intent,int,Bundle)} 5228 */ 5229 @Deprecated 5230 public void startActivityFromFragment(@NonNull Fragment fragment, 5231 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 5232 startActivityForResult(fragment.mWho, intent, requestCode, options); 5233 } 5234 5235 /** 5236 * @hide 5237 */ 5238 public void startActivityAsUserFromFragment(@NonNull Fragment fragment, 5239 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options, 5240 UserHandle user) { 5241 startActivityForResultAsUser(intent, fragment.mWho, requestCode, options, user); 5242 } 5243 5244 /** 5245 * @hide 5246 */ 5247 @Override 5248 public void startActivityForResult( 5249 String who, Intent intent, int requestCode, @Nullable Bundle options) { 5250 Uri referrer = onProvideReferrer(); 5251 if (referrer != null) { 5252 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 5253 } 5254 options = transferSpringboardActivityOptions(options); 5255 Instrumentation.ActivityResult ar = 5256 mInstrumentation.execStartActivity( 5257 this, mMainThread.getApplicationThread(), mToken, who, 5258 intent, requestCode, options); 5259 if (ar != null) { 5260 mMainThread.sendActivityResult( 5261 mToken, who, requestCode, 5262 ar.getResultCode(), ar.getResultData()); 5263 } 5264 cancelInputsAndStartExitTransition(options); 5265 } 5266 5267 /** 5268 * @hide 5269 */ 5270 @Override 5271 public boolean canStartActivityForResult() { 5272 return true; 5273 } 5274 5275 /** 5276 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 5277 * int, Intent, int, int, int, Bundle)} with no options. 5278 */ 5279 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5280 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5281 int extraFlags) 5282 throws IntentSender.SendIntentException { 5283 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 5284 flagsMask, flagsValues, extraFlags, null); 5285 } 5286 5287 /** 5288 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 5289 * taking a IntentSender; see 5290 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5291 * for more information. 5292 */ 5293 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5294 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5295 int extraFlags, @Nullable Bundle options) 5296 throws IntentSender.SendIntentException { 5297 startIntentSenderForResultInner(intent, child.mEmbeddedID, requestCode, fillInIntent, 5298 flagsMask, flagsValues, options); 5299 } 5300 5301 /** 5302 * Like {@link #startIntentSenderFromChild}, but taking a Fragment; see 5303 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5304 * for more information. 5305 * 5306 * @hide 5307 */ 5308 public void startIntentSenderFromChildFragment(Fragment child, IntentSender intent, 5309 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5310 int extraFlags, @Nullable Bundle options) 5311 throws IntentSender.SendIntentException { 5312 startIntentSenderForResultInner(intent, child.mWho, requestCode, fillInIntent, 5313 flagsMask, flagsValues, options); 5314 } 5315 5316 /** 5317 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 5318 * or {@link #finish} to specify an explicit transition animation to 5319 * perform next. 5320 * 5321 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 5322 * to using this with starting activities is to supply the desired animation 5323 * information through a {@link ActivityOptions} bundle to 5324 * {@link #startActivity(Intent, Bundle)} or a related function. This allows 5325 * you to specify a custom animation even when starting an activity from 5326 * outside the context of the current top activity. 5327 * 5328 * @param enterAnim A resource ID of the animation resource to use for 5329 * the incoming activity. Use 0 for no animation. 5330 * @param exitAnim A resource ID of the animation resource to use for 5331 * the outgoing activity. Use 0 for no animation. 5332 */ 5333 public void overridePendingTransition(int enterAnim, int exitAnim) { 5334 try { 5335 ActivityManager.getService().overridePendingTransition( 5336 mToken, getPackageName(), enterAnim, exitAnim); 5337 } catch (RemoteException e) { 5338 } 5339 } 5340 5341 /** 5342 * Call this to set the result that your activity will return to its 5343 * caller. 5344 * 5345 * @param resultCode The result code to propagate back to the originating 5346 * activity, often RESULT_CANCELED or RESULT_OK 5347 * 5348 * @see #RESULT_CANCELED 5349 * @see #RESULT_OK 5350 * @see #RESULT_FIRST_USER 5351 * @see #setResult(int, Intent) 5352 */ 5353 public final void setResult(int resultCode) { 5354 synchronized (this) { 5355 mResultCode = resultCode; 5356 mResultData = null; 5357 } 5358 } 5359 5360 /** 5361 * Call this to set the result that your activity will return to its 5362 * caller. 5363 * 5364 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 5365 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 5366 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 5367 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 5368 * Activity receiving the result access to the specific URIs in the Intent. 5369 * Access will remain until the Activity has finished (it will remain across the hosting 5370 * process being killed and other temporary destruction) and will be added 5371 * to any existing set of URI permissions it already holds. 5372 * 5373 * @param resultCode The result code to propagate back to the originating 5374 * activity, often RESULT_CANCELED or RESULT_OK 5375 * @param data The data to propagate back to the originating activity. 5376 * 5377 * @see #RESULT_CANCELED 5378 * @see #RESULT_OK 5379 * @see #RESULT_FIRST_USER 5380 * @see #setResult(int) 5381 */ 5382 public final void setResult(int resultCode, Intent data) { 5383 synchronized (this) { 5384 mResultCode = resultCode; 5385 mResultData = data; 5386 } 5387 } 5388 5389 /** 5390 * Return information about who launched this activity. If the launching Intent 5391 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 5392 * that will be returned as-is; otherwise, if known, an 5393 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 5394 * package name that started the Intent will be returned. This may return null if no 5395 * referrer can be identified -- it is neither explicitly specified, nor is it known which 5396 * application package was involved. 5397 * 5398 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 5399 * return the referrer that submitted that new intent to the activity. Otherwise, it 5400 * always returns the referrer of the original Intent.</p> 5401 * 5402 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 5403 * referrer information, applications can spoof it.</p> 5404 */ 5405 @Nullable 5406 public Uri getReferrer() { 5407 Intent intent = getIntent(); 5408 try { 5409 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 5410 if (referrer != null) { 5411 return referrer; 5412 } 5413 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 5414 if (referrerName != null) { 5415 return Uri.parse(referrerName); 5416 } 5417 } catch (BadParcelableException e) { 5418 Log.w(TAG, "Cannot read referrer from intent;" 5419 + " intent extras contain unknown custom Parcelable objects"); 5420 } 5421 if (mReferrer != null) { 5422 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 5423 } 5424 return null; 5425 } 5426 5427 /** 5428 * Override to generate the desired referrer for the content currently being shown 5429 * by the app. The default implementation returns null, meaning the referrer will simply 5430 * be the android-app: of the package name of this activity. Return a non-null Uri to 5431 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 5432 */ 5433 public Uri onProvideReferrer() { 5434 return null; 5435 } 5436 5437 /** 5438 * Return the name of the package that invoked this activity. This is who 5439 * the data in {@link #setResult setResult()} will be sent to. You can 5440 * use this information to validate that the recipient is allowed to 5441 * receive the data. 5442 * 5443 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5444 * did not use the {@link #startActivityForResult} 5445 * form that includes a request code), then the calling package will be 5446 * null.</p> 5447 * 5448 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 5449 * the result from this method was unstable. If the process hosting the calling 5450 * package was no longer running, it would return null instead of the proper package 5451 * name. You can use {@link #getCallingActivity()} and retrieve the package name 5452 * from that instead.</p> 5453 * 5454 * @return The package of the activity that will receive your 5455 * reply, or null if none. 5456 */ 5457 @Nullable 5458 public String getCallingPackage() { 5459 try { 5460 return ActivityManager.getService().getCallingPackage(mToken); 5461 } catch (RemoteException e) { 5462 return null; 5463 } 5464 } 5465 5466 /** 5467 * Return the name of the activity that invoked this activity. This is 5468 * who the data in {@link #setResult setResult()} will be sent to. You 5469 * can use this information to validate that the recipient is allowed to 5470 * receive the data. 5471 * 5472 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5473 * did not use the {@link #startActivityForResult} 5474 * form that includes a request code), then the calling package will be 5475 * null. 5476 * 5477 * @return The ComponentName of the activity that will receive your 5478 * reply, or null if none. 5479 */ 5480 @Nullable 5481 public ComponentName getCallingActivity() { 5482 try { 5483 return ActivityManager.getService().getCallingActivity(mToken); 5484 } catch (RemoteException e) { 5485 return null; 5486 } 5487 } 5488 5489 /** 5490 * Control whether this activity's main window is visible. This is intended 5491 * only for the special case of an activity that is not going to show a 5492 * UI itself, but can't just finish prior to onResume() because it needs 5493 * to wait for a service binding or such. Setting this to false allows 5494 * you to prevent your UI from being shown during that time. 5495 * 5496 * <p>The default value for this is taken from the 5497 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5498 */ 5499 public void setVisible(boolean visible) { 5500 if (mVisibleFromClient != visible) { 5501 mVisibleFromClient = visible; 5502 if (mVisibleFromServer) { 5503 if (visible) makeVisible(); 5504 else mDecor.setVisibility(View.INVISIBLE); 5505 } 5506 } 5507 } 5508 5509 void makeVisible() { 5510 if (!mWindowAdded) { 5511 ViewManager wm = getWindowManager(); 5512 wm.addView(mDecor, getWindow().getAttributes()); 5513 mWindowAdded = true; 5514 } 5515 mDecor.setVisibility(View.VISIBLE); 5516 } 5517 5518 /** 5519 * Check to see whether this activity is in the process of finishing, 5520 * either because you called {@link #finish} on it or someone else 5521 * has requested that it finished. This is often used in 5522 * {@link #onPause} to determine whether the activity is simply pausing or 5523 * completely finishing. 5524 * 5525 * @return If the activity is finishing, returns true; else returns false. 5526 * 5527 * @see #finish 5528 */ 5529 public boolean isFinishing() { 5530 return mFinished; 5531 } 5532 5533 /** 5534 * Returns true if the final {@link #onDestroy()} call has been made 5535 * on the Activity, so this instance is now dead. 5536 */ 5537 public boolean isDestroyed() { 5538 return mDestroyed; 5539 } 5540 5541 /** 5542 * Check to see whether this activity is in the process of being destroyed in order to be 5543 * recreated with a new configuration. This is often used in 5544 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5545 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5546 * 5547 * @return If the activity is being torn down in order to be recreated with a new configuration, 5548 * returns true; else returns false. 5549 */ 5550 public boolean isChangingConfigurations() { 5551 return mChangingConfigurations; 5552 } 5553 5554 /** 5555 * Cause this Activity to be recreated with a new instance. This results 5556 * in essentially the same flow as when the Activity is created due to 5557 * a configuration change -- the current instance will go through its 5558 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5559 */ 5560 public void recreate() { 5561 if (mParent != null) { 5562 throw new IllegalStateException("Can only be called on top-level activity"); 5563 } 5564 mMainThread.handleRelaunchActivityLocally(mToken); 5565 } 5566 5567 /** 5568 * Finishes the current activity and specifies whether to remove the task associated with this 5569 * activity. 5570 */ 5571 private void finish(int finishTask) { 5572 if (mParent == null) { 5573 int resultCode; 5574 Intent resultData; 5575 synchronized (this) { 5576 resultCode = mResultCode; 5577 resultData = mResultData; 5578 } 5579 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5580 try { 5581 if (resultData != null) { 5582 resultData.prepareToLeaveProcess(this); 5583 } 5584 if (ActivityManager.getService() 5585 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5586 mFinished = true; 5587 } 5588 } catch (RemoteException e) { 5589 // Empty 5590 } 5591 } else { 5592 mParent.finishFromChild(this); 5593 } 5594 5595 // Activity was launched when user tapped a link in the Autofill Save UI - Save UI must 5596 // be restored now. 5597 if (mIntent != null && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 5598 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_RESTORE, 5599 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 5600 } 5601 } 5602 5603 /** 5604 * Call this when your activity is done and should be closed. The 5605 * ActivityResult is propagated back to whoever launched you via 5606 * onActivityResult(). 5607 */ 5608 public void finish() { 5609 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5610 } 5611 5612 /** 5613 * Finish this activity as well as all activities immediately below it 5614 * in the current task that have the same affinity. This is typically 5615 * used when an application can be launched on to another task (such as 5616 * from an ACTION_VIEW of a content type it understands) and the user 5617 * has used the up navigation to switch out of the current task and in 5618 * to its own task. In this case, if the user has navigated down into 5619 * any other activities of the second application, all of those should 5620 * be removed from the original task as part of the task switch. 5621 * 5622 * <p>Note that this finish does <em>not</em> allow you to deliver results 5623 * to the previous activity, and an exception will be thrown if you are trying 5624 * to do so.</p> 5625 */ 5626 public void finishAffinity() { 5627 if (mParent != null) { 5628 throw new IllegalStateException("Can not be called from an embedded activity"); 5629 } 5630 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5631 throw new IllegalStateException("Can not be called to deliver a result"); 5632 } 5633 try { 5634 if (ActivityManager.getService().finishActivityAffinity(mToken)) { 5635 mFinished = true; 5636 } 5637 } catch (RemoteException e) { 5638 // Empty 5639 } 5640 } 5641 5642 /** 5643 * This is called when a child activity of this one calls its 5644 * {@link #finish} method. The default implementation simply calls 5645 * finish() on this activity (the parent), finishing the entire group. 5646 * 5647 * @param child The activity making the call. 5648 * 5649 * @see #finish 5650 */ 5651 public void finishFromChild(Activity child) { 5652 finish(); 5653 } 5654 5655 /** 5656 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5657 * to reverse its exit Transition. When the exit Transition completes, 5658 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5659 * immediately and the Activity exit Transition is run. 5660 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5661 */ 5662 public void finishAfterTransition() { 5663 if (!mActivityTransitionState.startExitBackTransition(this)) { 5664 finish(); 5665 } 5666 } 5667 5668 /** 5669 * Force finish another activity that you had previously started with 5670 * {@link #startActivityForResult}. 5671 * 5672 * @param requestCode The request code of the activity that you had 5673 * given to startActivityForResult(). If there are multiple 5674 * activities started with this request code, they 5675 * will all be finished. 5676 */ 5677 public void finishActivity(int requestCode) { 5678 if (mParent == null) { 5679 try { 5680 ActivityManager.getService() 5681 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5682 } catch (RemoteException e) { 5683 // Empty 5684 } 5685 } else { 5686 mParent.finishActivityFromChild(this, requestCode); 5687 } 5688 } 5689 5690 /** 5691 * This is called when a child activity of this one calls its 5692 * finishActivity(). 5693 * 5694 * @param child The activity making the call. 5695 * @param requestCode Request code that had been used to start the 5696 * activity. 5697 */ 5698 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5699 try { 5700 ActivityManager.getService() 5701 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5702 } catch (RemoteException e) { 5703 // Empty 5704 } 5705 } 5706 5707 /** 5708 * Call this when your activity is done and should be closed and the task should be completely 5709 * removed as a part of finishing the root activity of the task. 5710 */ 5711 public void finishAndRemoveTask() { 5712 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5713 } 5714 5715 /** 5716 * Ask that the local app instance of this activity be released to free up its memory. 5717 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5718 * a new instance of the activity will later be re-created if needed due to the user 5719 * navigating back to it. 5720 * 5721 * @return Returns true if the activity was in a state that it has started the process 5722 * of destroying its current instance; returns false if for any reason this could not 5723 * be done: it is currently visible to the user, it is already being destroyed, it is 5724 * being finished, it hasn't yet saved its state, etc. 5725 */ 5726 public boolean releaseInstance() { 5727 try { 5728 return ActivityManager.getService().releaseActivityInstance(mToken); 5729 } catch (RemoteException e) { 5730 // Empty 5731 } 5732 return false; 5733 } 5734 5735 /** 5736 * Called when an activity you launched exits, giving you the requestCode 5737 * you started it with, the resultCode it returned, and any additional 5738 * data from it. The <var>resultCode</var> will be 5739 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5740 * didn't return any result, or crashed during its operation. 5741 * 5742 * <p>You will receive this call immediately before onResume() when your 5743 * activity is re-starting. 5744 * 5745 * <p>This method is never invoked if your activity sets 5746 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5747 * <code>true</code>. 5748 * 5749 * @param requestCode The integer request code originally supplied to 5750 * startActivityForResult(), allowing you to identify who this 5751 * result came from. 5752 * @param resultCode The integer result code returned by the child activity 5753 * through its setResult(). 5754 * @param data An Intent, which can return result data to the caller 5755 * (various data can be attached to Intent "extras"). 5756 * 5757 * @see #startActivityForResult 5758 * @see #createPendingResult 5759 * @see #setResult(int) 5760 */ 5761 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5762 } 5763 5764 /** 5765 * Called when an activity you launched with an activity transition exposes this 5766 * Activity through a returning activity transition, giving you the resultCode 5767 * and any additional data from it. This method will only be called if the activity 5768 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5769 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5770 * 5771 * <p>The purpose of this function is to let the called Activity send a hint about 5772 * its state so that this underlying Activity can prepare to be exposed. A call to 5773 * this method does not guarantee that the called Activity has or will be exiting soon. 5774 * It only indicates that it will expose this Activity's Window and it has 5775 * some data to pass to prepare it.</p> 5776 * 5777 * @param resultCode The integer result code returned by the child activity 5778 * through its setResult(). 5779 * @param data An Intent, which can return result data to the caller 5780 * (various data can be attached to Intent "extras"). 5781 */ 5782 public void onActivityReenter(int resultCode, Intent data) { 5783 } 5784 5785 /** 5786 * Create a new PendingIntent object which you can hand to others 5787 * for them to use to send result data back to your 5788 * {@link #onActivityResult} callback. The created object will be either 5789 * one-shot (becoming invalid after a result is sent back) or multiple 5790 * (allowing any number of results to be sent through it). 5791 * 5792 * @param requestCode Private request code for the sender that will be 5793 * associated with the result data when it is returned. The sender can not 5794 * modify this value, allowing you to identify incoming results. 5795 * @param data Default data to supply in the result, which may be modified 5796 * by the sender. 5797 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5798 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5799 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5800 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5801 * or any of the flags as supported by 5802 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5803 * of the intent that can be supplied when the actual send happens. 5804 * 5805 * @return Returns an existing or new PendingIntent matching the given 5806 * parameters. May return null only if 5807 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5808 * supplied. 5809 * 5810 * @see PendingIntent 5811 */ 5812 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5813 @PendingIntent.Flags int flags) { 5814 String packageName = getPackageName(); 5815 try { 5816 data.prepareToLeaveProcess(this); 5817 IIntentSender target = 5818 ActivityManager.getService().getIntentSender( 5819 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5820 mParent == null ? mToken : mParent.mToken, 5821 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5822 getUserId()); 5823 return target != null ? new PendingIntent(target) : null; 5824 } catch (RemoteException e) { 5825 // Empty 5826 } 5827 return null; 5828 } 5829 5830 /** 5831 * Change the desired orientation of this activity. If the activity 5832 * is currently in the foreground or otherwise impacting the screen 5833 * orientation, the screen will immediately be changed (possibly causing 5834 * the activity to be restarted). Otherwise, this will be used the next 5835 * time the activity is visible. 5836 * 5837 * @param requestedOrientation An orientation constant as used in 5838 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5839 */ 5840 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5841 if (mParent == null) { 5842 try { 5843 ActivityManager.getService().setRequestedOrientation( 5844 mToken, requestedOrientation); 5845 } catch (RemoteException e) { 5846 // Empty 5847 } 5848 } else { 5849 mParent.setRequestedOrientation(requestedOrientation); 5850 } 5851 } 5852 5853 /** 5854 * Return the current requested orientation of the activity. This will 5855 * either be the orientation requested in its component's manifest, or 5856 * the last requested orientation given to 5857 * {@link #setRequestedOrientation(int)}. 5858 * 5859 * @return Returns an orientation constant as used in 5860 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5861 */ 5862 @ActivityInfo.ScreenOrientation 5863 public int getRequestedOrientation() { 5864 if (mParent == null) { 5865 try { 5866 return ActivityManager.getService() 5867 .getRequestedOrientation(mToken); 5868 } catch (RemoteException e) { 5869 // Empty 5870 } 5871 } else { 5872 return mParent.getRequestedOrientation(); 5873 } 5874 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5875 } 5876 5877 /** 5878 * Return the identifier of the task this activity is in. This identifier 5879 * will remain the same for the lifetime of the activity. 5880 * 5881 * @return Task identifier, an opaque integer. 5882 */ 5883 public int getTaskId() { 5884 try { 5885 return ActivityManager.getService() 5886 .getTaskForActivity(mToken, false); 5887 } catch (RemoteException e) { 5888 return -1; 5889 } 5890 } 5891 5892 /** 5893 * Return whether this activity is the root of a task. The root is the 5894 * first activity in a task. 5895 * 5896 * @return True if this is the root activity, else false. 5897 */ 5898 @Override 5899 public boolean isTaskRoot() { 5900 try { 5901 return ActivityManager.getService().getTaskForActivity(mToken, true) >= 0; 5902 } catch (RemoteException e) { 5903 return false; 5904 } 5905 } 5906 5907 /** 5908 * Move the task containing this activity to the back of the activity 5909 * stack. The activity's order within the task is unchanged. 5910 * 5911 * @param nonRoot If false then this only works if the activity is the root 5912 * of a task; if true it will work for any activity in 5913 * a task. 5914 * 5915 * @return If the task was moved (or it was already at the 5916 * back) true is returned, else false. 5917 */ 5918 public boolean moveTaskToBack(boolean nonRoot) { 5919 try { 5920 return ActivityManager.getService().moveActivityTaskToBack( 5921 mToken, nonRoot); 5922 } catch (RemoteException e) { 5923 // Empty 5924 } 5925 return false; 5926 } 5927 5928 /** 5929 * Returns class name for this activity with the package prefix removed. 5930 * This is the default name used to read and write settings. 5931 * 5932 * @return The local class name. 5933 */ 5934 @NonNull 5935 public String getLocalClassName() { 5936 final String pkg = getPackageName(); 5937 final String cls = mComponent.getClassName(); 5938 int packageLen = pkg.length(); 5939 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5940 || cls.charAt(packageLen) != '.') { 5941 return cls; 5942 } 5943 return cls.substring(packageLen+1); 5944 } 5945 5946 /** 5947 * Returns the complete component name of this activity. 5948 * 5949 * @return Returns the complete component name for this activity 5950 */ 5951 public ComponentName getComponentName() { 5952 return mComponent; 5953 } 5954 5955 /** @hide */ 5956 @Override 5957 public final ComponentName autofillClientGetComponentName() { 5958 return getComponentName(); 5959 } 5960 5961 /** 5962 * Retrieve a {@link SharedPreferences} object for accessing preferences 5963 * that are private to this activity. This simply calls the underlying 5964 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5965 * class name as the preferences name. 5966 * 5967 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5968 * operation. 5969 * 5970 * @return Returns the single SharedPreferences instance that can be used 5971 * to retrieve and modify the preference values. 5972 */ 5973 public SharedPreferences getPreferences(@Context.PreferencesMode int mode) { 5974 return getSharedPreferences(getLocalClassName(), mode); 5975 } 5976 5977 private void ensureSearchManager() { 5978 if (mSearchManager != null) { 5979 return; 5980 } 5981 5982 try { 5983 mSearchManager = new SearchManager(this, null); 5984 } catch (ServiceNotFoundException e) { 5985 throw new IllegalStateException(e); 5986 } 5987 } 5988 5989 @Override 5990 public Object getSystemService(@ServiceName @NonNull String name) { 5991 if (getBaseContext() == null) { 5992 throw new IllegalStateException( 5993 "System services not available to Activities before onCreate()"); 5994 } 5995 5996 if (WINDOW_SERVICE.equals(name)) { 5997 return mWindowManager; 5998 } else if (SEARCH_SERVICE.equals(name)) { 5999 ensureSearchManager(); 6000 return mSearchManager; 6001 } 6002 return super.getSystemService(name); 6003 } 6004 6005 /** 6006 * Change the title associated with this activity. If this is a 6007 * top-level activity, the title for its window will change. If it 6008 * is an embedded activity, the parent can do whatever it wants 6009 * with it. 6010 */ 6011 public void setTitle(CharSequence title) { 6012 mTitle = title; 6013 onTitleChanged(title, mTitleColor); 6014 6015 if (mParent != null) { 6016 mParent.onChildTitleChanged(this, title); 6017 } 6018 } 6019 6020 /** 6021 * Change the title associated with this activity. If this is a 6022 * top-level activity, the title for its window will change. If it 6023 * is an embedded activity, the parent can do whatever it wants 6024 * with it. 6025 */ 6026 public void setTitle(int titleId) { 6027 setTitle(getText(titleId)); 6028 } 6029 6030 /** 6031 * Change the color of the title associated with this activity. 6032 * <p> 6033 * This method is deprecated starting in API Level 11 and replaced by action 6034 * bar styles. For information on styling the Action Bar, read the <a 6035 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 6036 * guide. 6037 * 6038 * @deprecated Use action bar styles instead. 6039 */ 6040 @Deprecated 6041 public void setTitleColor(int textColor) { 6042 mTitleColor = textColor; 6043 onTitleChanged(mTitle, textColor); 6044 } 6045 6046 public final CharSequence getTitle() { 6047 return mTitle; 6048 } 6049 6050 public final int getTitleColor() { 6051 return mTitleColor; 6052 } 6053 6054 protected void onTitleChanged(CharSequence title, int color) { 6055 if (mTitleReady) { 6056 final Window win = getWindow(); 6057 if (win != null) { 6058 win.setTitle(title); 6059 if (color != 0) { 6060 win.setTitleColor(color); 6061 } 6062 } 6063 if (mActionBar != null) { 6064 mActionBar.setWindowTitle(title); 6065 } 6066 } 6067 } 6068 6069 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 6070 } 6071 6072 /** 6073 * Sets information describing the task with this activity for presentation inside the Recents 6074 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 6075 * are traversed in order from the topmost activity to the bottommost. The traversal continues 6076 * for each property until a suitable value is found. For each task the taskDescription will be 6077 * returned in {@link android.app.ActivityManager.TaskDescription}. 6078 * 6079 * @see ActivityManager#getRecentTasks 6080 * @see android.app.ActivityManager.TaskDescription 6081 * 6082 * @param taskDescription The TaskDescription properties that describe the task with this activity 6083 */ 6084 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 6085 if (mTaskDescription != taskDescription) { 6086 mTaskDescription.copyFromPreserveHiddenFields(taskDescription); 6087 // Scale the icon down to something reasonable if it is provided 6088 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 6089 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 6090 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, 6091 true); 6092 mTaskDescription.setIcon(icon); 6093 } 6094 } 6095 try { 6096 ActivityManager.getService().setTaskDescription(mToken, mTaskDescription); 6097 } catch (RemoteException e) { 6098 } 6099 } 6100 6101 /** 6102 * Sets the visibility of the progress bar in the title. 6103 * <p> 6104 * In order for the progress bar to be shown, the feature must be requested 6105 * via {@link #requestWindowFeature(int)}. 6106 * 6107 * @param visible Whether to show the progress bars in the title. 6108 * @deprecated No longer supported starting in API 21. 6109 */ 6110 @Deprecated 6111 public final void setProgressBarVisibility(boolean visible) { 6112 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 6113 Window.PROGRESS_VISIBILITY_OFF); 6114 } 6115 6116 /** 6117 * Sets the visibility of the indeterminate progress bar in the title. 6118 * <p> 6119 * In order for the progress bar to be shown, the feature must be requested 6120 * via {@link #requestWindowFeature(int)}. 6121 * 6122 * @param visible Whether to show the progress bars in the title. 6123 * @deprecated No longer supported starting in API 21. 6124 */ 6125 @Deprecated 6126 public final void setProgressBarIndeterminateVisibility(boolean visible) { 6127 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 6128 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 6129 } 6130 6131 /** 6132 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 6133 * is always indeterminate). 6134 * <p> 6135 * In order for the progress bar to be shown, the feature must be requested 6136 * via {@link #requestWindowFeature(int)}. 6137 * 6138 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 6139 * @deprecated No longer supported starting in API 21. 6140 */ 6141 @Deprecated 6142 public final void setProgressBarIndeterminate(boolean indeterminate) { 6143 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6144 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 6145 : Window.PROGRESS_INDETERMINATE_OFF); 6146 } 6147 6148 /** 6149 * Sets the progress for the progress bars in the title. 6150 * <p> 6151 * In order for the progress bar to be shown, the feature must be requested 6152 * via {@link #requestWindowFeature(int)}. 6153 * 6154 * @param progress The progress for the progress bar. Valid ranges are from 6155 * 0 to 10000 (both inclusive). If 10000 is given, the progress 6156 * bar will be completely filled and will fade out. 6157 * @deprecated No longer supported starting in API 21. 6158 */ 6159 @Deprecated 6160 public final void setProgress(int progress) { 6161 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 6162 } 6163 6164 /** 6165 * Sets the secondary progress for the progress bar in the title. This 6166 * progress is drawn between the primary progress (set via 6167 * {@link #setProgress(int)} and the background. It can be ideal for media 6168 * scenarios such as showing the buffering progress while the default 6169 * progress shows the play progress. 6170 * <p> 6171 * In order for the progress bar to be shown, the feature must be requested 6172 * via {@link #requestWindowFeature(int)}. 6173 * 6174 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 6175 * 0 to 10000 (both inclusive). 6176 * @deprecated No longer supported starting in API 21. 6177 */ 6178 @Deprecated 6179 public final void setSecondaryProgress(int secondaryProgress) { 6180 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6181 secondaryProgress + Window.PROGRESS_SECONDARY_START); 6182 } 6183 6184 /** 6185 * Suggests an audio stream whose volume should be changed by the hardware 6186 * volume controls. 6187 * <p> 6188 * The suggested audio stream will be tied to the window of this Activity. 6189 * Volume requests which are received while the Activity is in the 6190 * foreground will affect this stream. 6191 * <p> 6192 * It is not guaranteed that the hardware volume controls will always change 6193 * this stream's volume (for example, if a call is in progress, its stream's 6194 * volume may be changed instead). To reset back to the default, use 6195 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 6196 * 6197 * @param streamType The type of the audio stream whose volume should be 6198 * changed by the hardware volume controls. 6199 */ 6200 public final void setVolumeControlStream(int streamType) { 6201 getWindow().setVolumeControlStream(streamType); 6202 } 6203 6204 /** 6205 * Gets the suggested audio stream whose volume should be changed by the 6206 * hardware volume controls. 6207 * 6208 * @return The suggested audio stream type whose volume should be changed by 6209 * the hardware volume controls. 6210 * @see #setVolumeControlStream(int) 6211 */ 6212 public final int getVolumeControlStream() { 6213 return getWindow().getVolumeControlStream(); 6214 } 6215 6216 /** 6217 * Sets a {@link MediaController} to send media keys and volume changes to. 6218 * <p> 6219 * The controller will be tied to the window of this Activity. Media key and 6220 * volume events which are received while the Activity is in the foreground 6221 * will be forwarded to the controller and used to invoke transport controls 6222 * or adjust the volume. This may be used instead of or in addition to 6223 * {@link #setVolumeControlStream} to affect a specific session instead of a 6224 * specific stream. 6225 * <p> 6226 * It is not guaranteed that the hardware volume controls will always change 6227 * this session's volume (for example, if a call is in progress, its 6228 * stream's volume may be changed instead). To reset back to the default use 6229 * null as the controller. 6230 * 6231 * @param controller The controller for the session which should receive 6232 * media keys and volume changes. 6233 */ 6234 public final void setMediaController(MediaController controller) { 6235 getWindow().setMediaController(controller); 6236 } 6237 6238 /** 6239 * Gets the controller which should be receiving media key and volume events 6240 * while this activity is in the foreground. 6241 * 6242 * @return The controller which should receive events. 6243 * @see #setMediaController(android.media.session.MediaController) 6244 */ 6245 public final MediaController getMediaController() { 6246 return getWindow().getMediaController(); 6247 } 6248 6249 /** 6250 * Runs the specified action on the UI thread. If the current thread is the UI 6251 * thread, then the action is executed immediately. If the current thread is 6252 * not the UI thread, the action is posted to the event queue of the UI thread. 6253 * 6254 * @param action the action to run on the UI thread 6255 */ 6256 public final void runOnUiThread(Runnable action) { 6257 if (Thread.currentThread() != mUiThread) { 6258 mHandler.post(action); 6259 } else { 6260 action.run(); 6261 } 6262 } 6263 6264 /** @hide */ 6265 @Override 6266 public final void autofillClientRunOnUiThread(Runnable action) { 6267 runOnUiThread(action); 6268 } 6269 6270 /** 6271 * Standard implementation of 6272 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 6273 * inflating with the LayoutInflater returned by {@link #getSystemService}. 6274 * This implementation does nothing and is for 6275 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 6276 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 6277 * 6278 * @see android.view.LayoutInflater#createView 6279 * @see android.view.Window#getLayoutInflater 6280 */ 6281 @Nullable 6282 public View onCreateView(String name, Context context, AttributeSet attrs) { 6283 return null; 6284 } 6285 6286 /** 6287 * Standard implementation of 6288 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 6289 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 6290 * This implementation handles <fragment> tags to embed fragments inside 6291 * of the activity. 6292 * 6293 * @see android.view.LayoutInflater#createView 6294 * @see android.view.Window#getLayoutInflater 6295 */ 6296 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 6297 if (!"fragment".equals(name)) { 6298 return onCreateView(name, context, attrs); 6299 } 6300 6301 return mFragments.onCreateView(parent, name, context, attrs); 6302 } 6303 6304 /** 6305 * Print the Activity's state into the given stream. This gets invoked if 6306 * you run "adb shell dumpsys activity <activity_component_name>". 6307 * 6308 * @param prefix Desired prefix to prepend at each line of output. 6309 * @param fd The raw file descriptor that the dump is being sent to. 6310 * @param writer The PrintWriter to which you should dump your state. This will be 6311 * closed for you after you return. 6312 * @param args additional arguments to the dump request. 6313 */ 6314 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6315 dumpInner(prefix, fd, writer, args); 6316 } 6317 6318 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6319 writer.print(prefix); writer.print("Local Activity "); 6320 writer.print(Integer.toHexString(System.identityHashCode(this))); 6321 writer.println(" State:"); 6322 String innerPrefix = prefix + " "; 6323 writer.print(innerPrefix); writer.print("mResumed="); 6324 writer.print(mResumed); writer.print(" mStopped="); 6325 writer.print(mStopped); writer.print(" mFinished="); 6326 writer.println(mFinished); 6327 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 6328 writer.println(mChangingConfigurations); 6329 writer.print(innerPrefix); writer.print("mCurrentConfig="); 6330 writer.println(mCurrentConfig); 6331 6332 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 6333 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 6334 if (mVoiceInteractor != null) { 6335 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 6336 } 6337 6338 if (getWindow() != null && 6339 getWindow().peekDecorView() != null && 6340 getWindow().peekDecorView().getViewRootImpl() != null) { 6341 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 6342 } 6343 6344 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 6345 6346 final AutofillManager afm = getAutofillManager(); 6347 if (afm != null) { 6348 writer.print(prefix); writer.print("Autofill Compat Mode: "); 6349 writer.println(isAutofillCompatibilityEnabled()); 6350 afm.dump(prefix, writer); 6351 } else { 6352 writer.print(prefix); writer.println("No AutofillManager"); 6353 } 6354 } 6355 6356 /** 6357 * Bit indicating that this activity is "immersive" and should not be 6358 * interrupted by notifications if possible. 6359 * 6360 * This value is initially set by the manifest property 6361 * <code>android:immersive</code> but may be changed at runtime by 6362 * {@link #setImmersive}. 6363 * 6364 * @see #setImmersive(boolean) 6365 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6366 */ 6367 public boolean isImmersive() { 6368 try { 6369 return ActivityManager.getService().isImmersive(mToken); 6370 } catch (RemoteException e) { 6371 return false; 6372 } 6373 } 6374 6375 /** 6376 * Indication of whether this is the highest level activity in this task. Can be used to 6377 * determine whether an activity launched by this activity was placed in the same task or 6378 * another task. 6379 * 6380 * @return true if this is the topmost, non-finishing activity in its task. 6381 */ 6382 private boolean isTopOfTask() { 6383 if (mToken == null || mWindow == null) { 6384 return false; 6385 } 6386 try { 6387 return ActivityManager.getService().isTopOfTask(getActivityToken()); 6388 } catch (RemoteException e) { 6389 return false; 6390 } 6391 } 6392 6393 /** 6394 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 6395 * fullscreen opaque Activity. 6396 * <p> 6397 * Call this whenever the background of a translucent Activity has changed to become opaque. 6398 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 6399 * <p> 6400 * This call has no effect on non-translucent activities or on activities with the 6401 * {@link android.R.attr#windowIsFloating} attribute. 6402 * 6403 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6404 * ActivityOptions) 6405 * @see TranslucentConversionListener 6406 * 6407 * @hide 6408 */ 6409 @SystemApi 6410 public void convertFromTranslucent() { 6411 try { 6412 mTranslucentCallback = null; 6413 if (ActivityManager.getService().convertFromTranslucent(mToken)) { 6414 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 6415 } 6416 } catch (RemoteException e) { 6417 // pass 6418 } 6419 } 6420 6421 /** 6422 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 6423 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 6424 * <p> 6425 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 6426 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 6427 * be called indicating that it is safe to make this activity translucent again. Until 6428 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 6429 * behind the frontmost Activity will be indeterminate. 6430 * <p> 6431 * This call has no effect on non-translucent activities or on activities with the 6432 * {@link android.R.attr#windowIsFloating} attribute. 6433 * 6434 * @param callback the method to call when all visible Activities behind this one have been 6435 * drawn and it is safe to make this Activity translucent again. 6436 * @param options activity options delivered to the activity below this one. The options 6437 * are retrieved using {@link #getActivityOptions}. 6438 * @return <code>true</code> if Window was opaque and will become translucent or 6439 * <code>false</code> if window was translucent and no change needed to be made. 6440 * 6441 * @see #convertFromTranslucent() 6442 * @see TranslucentConversionListener 6443 * 6444 * @hide 6445 */ 6446 @SystemApi 6447 public boolean convertToTranslucent(TranslucentConversionListener callback, 6448 ActivityOptions options) { 6449 boolean drawComplete; 6450 try { 6451 mTranslucentCallback = callback; 6452 mChangeCanvasToTranslucent = ActivityManager.getService().convertToTranslucent( 6453 mToken, options == null ? null : options.toBundle()); 6454 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6455 drawComplete = true; 6456 } catch (RemoteException e) { 6457 // Make callback return as though it timed out. 6458 mChangeCanvasToTranslucent = false; 6459 drawComplete = false; 6460 } 6461 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 6462 // Window is already translucent. 6463 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6464 } 6465 return mChangeCanvasToTranslucent; 6466 } 6467 6468 /** @hide */ 6469 void onTranslucentConversionComplete(boolean drawComplete) { 6470 if (mTranslucentCallback != null) { 6471 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6472 mTranslucentCallback = null; 6473 } 6474 if (mChangeCanvasToTranslucent) { 6475 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6476 } 6477 } 6478 6479 /** @hide */ 6480 public void onNewActivityOptions(ActivityOptions options) { 6481 mActivityTransitionState.setEnterActivityOptions(this, options); 6482 if (!mStopped) { 6483 mActivityTransitionState.enterReady(this); 6484 } 6485 } 6486 6487 /** 6488 * Retrieve the ActivityOptions passed in from the launching activity or passed back 6489 * from an activity launched by this activity in its call to {@link 6490 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 6491 * 6492 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6493 * @hide 6494 */ 6495 ActivityOptions getActivityOptions() { 6496 try { 6497 return ActivityOptions.fromBundle( 6498 ActivityManager.getService().getActivityOptions(mToken)); 6499 } catch (RemoteException e) { 6500 } 6501 return null; 6502 } 6503 6504 /** 6505 * Activities that want to remain visible behind a translucent activity above them must call 6506 * this method anytime between the start of {@link #onResume()} and the return from 6507 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6508 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6509 * 6510 * <p>The actions of this call are reset each time that this activity is brought to the 6511 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6512 * to not have requested visible behind. Therefore, if you want this activity to continue to 6513 * be visible in the background you must call this method again. 6514 * 6515 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6516 * for dialog and translucent activities. 6517 * 6518 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6519 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6520 * 6521 * <p>False will be returned any time this method is called between the return of onPause and 6522 * the next call to onResume. 6523 * 6524 * @deprecated This method's functionality is no longer supported as of 6525 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6526 * 6527 * @param visible true to notify the system that the activity wishes to be visible behind other 6528 * translucent activities, false to indicate otherwise. Resources must be 6529 * released when passing false to this method. 6530 * 6531 * @return the resulting visibiity state. If true the activity will remain visible beyond 6532 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6533 * then the activity may not count on being visible behind other translucent activities, 6534 * and must stop any media playback and release resources. 6535 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6536 * the return value must be checked. 6537 * 6538 * @see #onVisibleBehindCanceled() 6539 */ 6540 @Deprecated 6541 public boolean requestVisibleBehind(boolean visible) { 6542 return false; 6543 } 6544 6545 /** 6546 * Called when a translucent activity over this activity is becoming opaque or another 6547 * activity is being launched. Activities that override this method must call 6548 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6549 * 6550 * <p>When this method is called the activity has 500 msec to release any resources it may be 6551 * using while visible in the background. 6552 * If the activity has not returned from this method in 500 msec the system will destroy 6553 * the activity and kill the process in order to recover the resources for another 6554 * process. Otherwise {@link #onStop()} will be called following return. 6555 * 6556 * @see #requestVisibleBehind(boolean) 6557 * 6558 * @deprecated This method's functionality is no longer supported as of 6559 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6560 */ 6561 @Deprecated 6562 @CallSuper 6563 public void onVisibleBehindCanceled() { 6564 mCalled = true; 6565 } 6566 6567 /** 6568 * Translucent activities may call this to determine if there is an activity below them that 6569 * is currently set to be visible in the background. 6570 * 6571 * @deprecated This method's functionality is no longer supported as of 6572 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6573 * 6574 * @return true if an activity below is set to visible according to the most recent call to 6575 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6576 * 6577 * @see #requestVisibleBehind(boolean) 6578 * @see #onVisibleBehindCanceled() 6579 * @see #onBackgroundVisibleBehindChanged(boolean) 6580 * @hide 6581 */ 6582 @Deprecated 6583 @SystemApi 6584 public boolean isBackgroundVisibleBehind() { 6585 return false; 6586 } 6587 6588 /** 6589 * The topmost foreground activity will receive this call when the background visibility state 6590 * of the activity below it changes. 6591 * 6592 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6593 * due to a background activity finishing itself. 6594 * 6595 * @deprecated This method's functionality is no longer supported as of 6596 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6597 * 6598 * @param visible true if a background activity is visible, false otherwise. 6599 * 6600 * @see #requestVisibleBehind(boolean) 6601 * @see #onVisibleBehindCanceled() 6602 * @hide 6603 */ 6604 @Deprecated 6605 @SystemApi 6606 public void onBackgroundVisibleBehindChanged(boolean visible) { 6607 } 6608 6609 /** 6610 * Activities cannot draw during the period that their windows are animating in. In order 6611 * to know when it is safe to begin drawing they can override this method which will be 6612 * called when the entering animation has completed. 6613 */ 6614 public void onEnterAnimationComplete() { 6615 } 6616 6617 /** 6618 * @hide 6619 */ 6620 public void dispatchEnterAnimationComplete() { 6621 onEnterAnimationComplete(); 6622 if (getWindow() != null && getWindow().getDecorView() != null) { 6623 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6624 } 6625 } 6626 6627 /** 6628 * Adjust the current immersive mode setting. 6629 * 6630 * Note that changing this value will have no effect on the activity's 6631 * {@link android.content.pm.ActivityInfo} structure; that is, if 6632 * <code>android:immersive</code> is set to <code>true</code> 6633 * in the application's manifest entry for this activity, the {@link 6634 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6635 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6636 * FLAG_IMMERSIVE} bit set. 6637 * 6638 * @see #isImmersive() 6639 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6640 */ 6641 public void setImmersive(boolean i) { 6642 try { 6643 ActivityManager.getService().setImmersive(mToken, i); 6644 } catch (RemoteException e) { 6645 // pass 6646 } 6647 } 6648 6649 /** 6650 * Enable or disable virtual reality (VR) mode for this Activity. 6651 * 6652 * <p>VR mode is a hint to Android system to switch to a mode optimized for VR applications 6653 * while this Activity has user focus.</p> 6654 * 6655 * <p>It is recommended that applications additionally declare 6656 * {@link android.R.attr#enableVrMode} in their manifest to allow for smooth activity 6657 * transitions when switching between VR activities.</p> 6658 * 6659 * <p>If the requested {@link android.service.vr.VrListenerService} component is not available, 6660 * VR mode will not be started. Developers can handle this case as follows:</p> 6661 * 6662 * <pre> 6663 * String servicePackage = "com.whatever.app"; 6664 * String serviceClass = "com.whatever.app.MyVrListenerService"; 6665 * 6666 * // Name of the component of the VrListenerService to start. 6667 * ComponentName serviceComponent = new ComponentName(servicePackage, serviceClass); 6668 * 6669 * try { 6670 * setVrModeEnabled(true, myComponentName); 6671 * } catch (PackageManager.NameNotFoundException e) { 6672 * List<ApplicationInfo> installed = getPackageManager().getInstalledApplications(0); 6673 * boolean isInstalled = false; 6674 * for (ApplicationInfo app : installed) { 6675 * if (app.packageName.equals(servicePackage)) { 6676 * isInstalled = true; 6677 * break; 6678 * } 6679 * } 6680 * if (isInstalled) { 6681 * // Package is installed, but not enabled in Settings. Let user enable it. 6682 * startActivity(new Intent(Settings.ACTION_VR_LISTENER_SETTINGS)); 6683 * } else { 6684 * // Package is not installed. Send an intent to download this. 6685 * sentIntentToLaunchAppStore(servicePackage); 6686 * } 6687 * } 6688 * </pre> 6689 * 6690 * @param enabled {@code true} to enable this mode. 6691 * @param requestedComponent the name of the component to use as a 6692 * {@link android.service.vr.VrListenerService} while VR mode is enabled. 6693 * 6694 * @throws android.content.pm.PackageManager.NameNotFoundException if the given component 6695 * to run as a {@link android.service.vr.VrListenerService} is not installed, or has 6696 * not been enabled in user settings. 6697 * 6698 * @see android.content.pm.PackageManager#FEATURE_VR_MODE_HIGH_PERFORMANCE 6699 * @see android.service.vr.VrListenerService 6700 * @see android.provider.Settings#ACTION_VR_LISTENER_SETTINGS 6701 * @see android.R.attr#enableVrMode 6702 */ 6703 public void setVrModeEnabled(boolean enabled, @NonNull ComponentName requestedComponent) 6704 throws PackageManager.NameNotFoundException { 6705 try { 6706 if (ActivityManager.getService().setVrMode(mToken, enabled, requestedComponent) 6707 != 0) { 6708 throw new PackageManager.NameNotFoundException( 6709 requestedComponent.flattenToString()); 6710 } 6711 } catch (RemoteException e) { 6712 // pass 6713 } 6714 } 6715 6716 /** 6717 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6718 * 6719 * @param callback Callback that will manage lifecycle events for this action mode 6720 * @return The ActionMode that was started, or null if it was canceled 6721 * 6722 * @see ActionMode 6723 */ 6724 @Nullable 6725 public ActionMode startActionMode(ActionMode.Callback callback) { 6726 return mWindow.getDecorView().startActionMode(callback); 6727 } 6728 6729 /** 6730 * Start an action mode of the given type. 6731 * 6732 * @param callback Callback that will manage lifecycle events for this action mode 6733 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6734 * @return The ActionMode that was started, or null if it was canceled 6735 * 6736 * @see ActionMode 6737 */ 6738 @Nullable 6739 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6740 return mWindow.getDecorView().startActionMode(callback, type); 6741 } 6742 6743 /** 6744 * Give the Activity a chance to control the UI for an action mode requested 6745 * by the system. 6746 * 6747 * <p>Note: If you are looking for a notification callback that an action mode 6748 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6749 * 6750 * @param callback The callback that should control the new action mode 6751 * @return The new action mode, or <code>null</code> if the activity does not want to 6752 * provide special handling for this action mode. (It will be handled by the system.) 6753 */ 6754 @Nullable 6755 @Override 6756 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6757 // Only Primary ActionModes are represented in the ActionBar. 6758 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6759 initWindowDecorActionBar(); 6760 if (mActionBar != null) { 6761 return mActionBar.startActionMode(callback); 6762 } 6763 } 6764 return null; 6765 } 6766 6767 /** 6768 * {@inheritDoc} 6769 */ 6770 @Nullable 6771 @Override 6772 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6773 try { 6774 mActionModeTypeStarting = type; 6775 return onWindowStartingActionMode(callback); 6776 } finally { 6777 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6778 } 6779 } 6780 6781 /** 6782 * Notifies the Activity that an action mode has been started. 6783 * Activity subclasses overriding this method should call the superclass implementation. 6784 * 6785 * @param mode The new action mode. 6786 */ 6787 @CallSuper 6788 @Override 6789 public void onActionModeStarted(ActionMode mode) { 6790 } 6791 6792 /** 6793 * Notifies the activity that an action mode has finished. 6794 * Activity subclasses overriding this method should call the superclass implementation. 6795 * 6796 * @param mode The action mode that just finished. 6797 */ 6798 @CallSuper 6799 @Override 6800 public void onActionModeFinished(ActionMode mode) { 6801 } 6802 6803 /** 6804 * Returns true if the app should recreate the task when navigating 'up' from this activity 6805 * by using targetIntent. 6806 * 6807 * <p>If this method returns false the app can trivially call 6808 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6809 * up navigation. If this method returns false, the app should synthesize a new task stack 6810 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6811 * 6812 * @param targetIntent An intent representing the target destination for up navigation 6813 * @return true if navigating up should recreate a new task stack, false if the same task 6814 * should be used for the destination 6815 */ 6816 public boolean shouldUpRecreateTask(Intent targetIntent) { 6817 try { 6818 PackageManager pm = getPackageManager(); 6819 ComponentName cn = targetIntent.getComponent(); 6820 if (cn == null) { 6821 cn = targetIntent.resolveActivity(pm); 6822 } 6823 ActivityInfo info = pm.getActivityInfo(cn, 0); 6824 if (info.taskAffinity == null) { 6825 return false; 6826 } 6827 return ActivityManager.getService() 6828 .shouldUpRecreateTask(mToken, info.taskAffinity); 6829 } catch (RemoteException e) { 6830 return false; 6831 } catch (NameNotFoundException e) { 6832 return false; 6833 } 6834 } 6835 6836 /** 6837 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6838 * in the process. If the activity indicated by upIntent already exists in the task's history, 6839 * this activity and all others before the indicated activity in the history stack will be 6840 * finished. 6841 * 6842 * <p>If the indicated activity does not appear in the history stack, this will finish 6843 * each activity in this task until the root activity of the task is reached, resulting in 6844 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6845 * when an activity may be reached by a path not passing through a canonical parent 6846 * activity.</p> 6847 * 6848 * <p>This method should be used when performing up navigation from within the same task 6849 * as the destination. If up navigation should cross tasks in some cases, see 6850 * {@link #shouldUpRecreateTask(Intent)}.</p> 6851 * 6852 * @param upIntent An intent representing the target destination for up navigation 6853 * 6854 * @return true if up navigation successfully reached the activity indicated by upIntent and 6855 * upIntent was delivered to it. false if an instance of the indicated activity could 6856 * not be found and this activity was simply finished normally. 6857 */ 6858 public boolean navigateUpTo(Intent upIntent) { 6859 if (mParent == null) { 6860 ComponentName destInfo = upIntent.getComponent(); 6861 if (destInfo == null) { 6862 destInfo = upIntent.resolveActivity(getPackageManager()); 6863 if (destInfo == null) { 6864 return false; 6865 } 6866 upIntent = new Intent(upIntent); 6867 upIntent.setComponent(destInfo); 6868 } 6869 int resultCode; 6870 Intent resultData; 6871 synchronized (this) { 6872 resultCode = mResultCode; 6873 resultData = mResultData; 6874 } 6875 if (resultData != null) { 6876 resultData.prepareToLeaveProcess(this); 6877 } 6878 try { 6879 upIntent.prepareToLeaveProcess(this); 6880 return ActivityManager.getService().navigateUpTo(mToken, upIntent, 6881 resultCode, resultData); 6882 } catch (RemoteException e) { 6883 return false; 6884 } 6885 } else { 6886 return mParent.navigateUpToFromChild(this, upIntent); 6887 } 6888 } 6889 6890 /** 6891 * This is called when a child activity of this one calls its 6892 * {@link #navigateUpTo} method. The default implementation simply calls 6893 * navigateUpTo(upIntent) on this activity (the parent). 6894 * 6895 * @param child The activity making the call. 6896 * @param upIntent An intent representing the target destination for up navigation 6897 * 6898 * @return true if up navigation successfully reached the activity indicated by upIntent and 6899 * upIntent was delivered to it. false if an instance of the indicated activity could 6900 * not be found and this activity was simply finished normally. 6901 */ 6902 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6903 return navigateUpTo(upIntent); 6904 } 6905 6906 /** 6907 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6908 * this activity's logical parent. The logical parent is named in the application's manifest 6909 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6910 * Activity subclasses may override this method to modify the Intent returned by 6911 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6912 * the parent intent entirely. 6913 * 6914 * @return a new Intent targeting the defined parent of this activity or null if 6915 * there is no valid parent. 6916 */ 6917 @Nullable 6918 public Intent getParentActivityIntent() { 6919 final String parentName = mActivityInfo.parentActivityName; 6920 if (TextUtils.isEmpty(parentName)) { 6921 return null; 6922 } 6923 6924 // If the parent itself has no parent, generate a main activity intent. 6925 final ComponentName target = new ComponentName(this, parentName); 6926 try { 6927 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6928 final String parentActivity = parentInfo.parentActivityName; 6929 final Intent parentIntent = parentActivity == null 6930 ? Intent.makeMainActivity(target) 6931 : new Intent().setComponent(target); 6932 return parentIntent; 6933 } catch (NameNotFoundException e) { 6934 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6935 "' in manifest"); 6936 return null; 6937 } 6938 } 6939 6940 /** 6941 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6942 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6943 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6944 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6945 * 6946 * @param callback Used to manipulate shared element transitions on the launched Activity. 6947 */ 6948 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6949 if (callback == null) { 6950 callback = SharedElementCallback.NULL_CALLBACK; 6951 } 6952 mEnterTransitionListener = callback; 6953 } 6954 6955 /** 6956 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6957 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6958 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6959 * calls will only come when returning from the started Activity. 6960 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6961 * 6962 * @param callback Used to manipulate shared element transitions on the launching Activity. 6963 */ 6964 public void setExitSharedElementCallback(SharedElementCallback callback) { 6965 if (callback == null) { 6966 callback = SharedElementCallback.NULL_CALLBACK; 6967 } 6968 mExitTransitionListener = callback; 6969 } 6970 6971 /** 6972 * Postpone the entering activity transition when Activity was started with 6973 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6974 * android.util.Pair[])}. 6975 * <p>This method gives the Activity the ability to delay starting the entering and 6976 * shared element transitions until all data is loaded. Until then, the Activity won't 6977 * draw into its window, leaving the window transparent. This may also cause the 6978 * returning animation to be delayed until data is ready. This method should be 6979 * called in {@link #onCreate(android.os.Bundle)} or in 6980 * {@link #onActivityReenter(int, android.content.Intent)}. 6981 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6982 * start the transitions. If the Activity did not use 6983 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6984 * android.util.Pair[])}, then this method does nothing.</p> 6985 */ 6986 public void postponeEnterTransition() { 6987 mActivityTransitionState.postponeEnterTransition(); 6988 } 6989 6990 /** 6991 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6992 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6993 * to have your Activity start drawing. 6994 */ 6995 public void startPostponedEnterTransition() { 6996 mActivityTransitionState.startPostponedEnterTransition(); 6997 } 6998 6999 /** 7000 * Create {@link DragAndDropPermissions} object bound to this activity and controlling the 7001 * access permissions for content URIs associated with the {@link DragEvent}. 7002 * @param event Drag event 7003 * @return The {@link DragAndDropPermissions} object used to control access to the content URIs. 7004 * Null if no content URIs are associated with the event or if permissions could not be granted. 7005 */ 7006 public DragAndDropPermissions requestDragAndDropPermissions(DragEvent event) { 7007 DragAndDropPermissions dragAndDropPermissions = DragAndDropPermissions.obtain(event); 7008 if (dragAndDropPermissions != null && dragAndDropPermissions.take(getActivityToken())) { 7009 return dragAndDropPermissions; 7010 } 7011 return null; 7012 } 7013 7014 // ------------------ Internal API ------------------ 7015 7016 final void setParent(Activity parent) { 7017 mParent = parent; 7018 } 7019 7020 final void attach(Context context, ActivityThread aThread, 7021 Instrumentation instr, IBinder token, int ident, 7022 Application application, Intent intent, ActivityInfo info, 7023 CharSequence title, Activity parent, String id, 7024 NonConfigurationInstances lastNonConfigurationInstances, 7025 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 7026 Window window, ActivityConfigCallback activityConfigCallback) { 7027 attachBaseContext(context); 7028 7029 mFragments.attachHost(null /*parent*/); 7030 7031 mWindow = new PhoneWindow(this, window, activityConfigCallback); 7032 mWindow.setWindowControllerCallback(this); 7033 mWindow.setCallback(this); 7034 mWindow.setOnWindowDismissedCallback(this); 7035 mWindow.getLayoutInflater().setPrivateFactory(this); 7036 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 7037 mWindow.setSoftInputMode(info.softInputMode); 7038 } 7039 if (info.uiOptions != 0) { 7040 mWindow.setUiOptions(info.uiOptions); 7041 } 7042 mUiThread = Thread.currentThread(); 7043 7044 mMainThread = aThread; 7045 mInstrumentation = instr; 7046 mToken = token; 7047 mIdent = ident; 7048 mApplication = application; 7049 mIntent = intent; 7050 mReferrer = referrer; 7051 mComponent = intent.getComponent(); 7052 mActivityInfo = info; 7053 mTitle = title; 7054 mParent = parent; 7055 mEmbeddedID = id; 7056 mLastNonConfigurationInstances = lastNonConfigurationInstances; 7057 if (voiceInteractor != null) { 7058 if (lastNonConfigurationInstances != null) { 7059 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 7060 } else { 7061 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 7062 Looper.myLooper()); 7063 } 7064 } 7065 7066 mWindow.setWindowManager( 7067 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 7068 mToken, mComponent.flattenToString(), 7069 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 7070 if (mParent != null) { 7071 mWindow.setContainer(mParent.getWindow()); 7072 } 7073 mWindowManager = mWindow.getWindowManager(); 7074 mCurrentConfig = config; 7075 7076 mWindow.setColorMode(info.colorMode); 7077 7078 setAutofillCompatibilityEnabled(application.isAutofillCompatibilityEnabled()); 7079 enableAutofillCompatibilityIfNeeded(); 7080 } 7081 7082 private void enableAutofillCompatibilityIfNeeded() { 7083 if (isAutofillCompatibilityEnabled()) { 7084 final AutofillManager afm = getSystemService(AutofillManager.class); 7085 if (afm != null) { 7086 afm.enableCompatibilityMode(); 7087 } 7088 } 7089 } 7090 7091 /** @hide */ 7092 public final IBinder getActivityToken() { 7093 return mParent != null ? mParent.getActivityToken() : mToken; 7094 } 7095 7096 final void performCreate(Bundle icicle) { 7097 performCreate(icicle, null); 7098 } 7099 7100 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 7101 mCanEnterPictureInPicture = true; 7102 restoreHasCurrentPermissionRequest(icicle); 7103 if (persistentState != null) { 7104 onCreate(icicle, persistentState); 7105 } else { 7106 onCreate(icicle); 7107 } 7108 writeEventLog(LOG_AM_ON_CREATE_CALLED, "performCreate"); 7109 mActivityTransitionState.readState(icicle); 7110 7111 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 7112 com.android.internal.R.styleable.Window_windowNoDisplay, false); 7113 mFragments.dispatchActivityCreated(); 7114 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7115 } 7116 7117 final void performNewIntent(Intent intent) { 7118 mCanEnterPictureInPicture = true; 7119 onNewIntent(intent); 7120 } 7121 7122 final void performStart(String reason) { 7123 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7124 mFragments.noteStateNotSaved(); 7125 mCalled = false; 7126 mFragments.execPendingActions(); 7127 mInstrumentation.callActivityOnStart(this); 7128 writeEventLog(LOG_AM_ON_START_CALLED, reason); 7129 7130 if (!mCalled) { 7131 throw new SuperNotCalledException( 7132 "Activity " + mComponent.toShortString() + 7133 " did not call through to super.onStart()"); 7134 } 7135 mFragments.dispatchStart(); 7136 mFragments.reportLoaderStart(); 7137 7138 boolean isAppDebuggable = 7139 (mApplication.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 7140 7141 // This property is set for all non-user builds except final release 7142 boolean isDlwarningEnabled = SystemProperties.getInt("ro.bionic.ld.warning", 0) == 1; 7143 7144 if (isAppDebuggable || isDlwarningEnabled) { 7145 String dlwarning = getDlWarning(); 7146 if (dlwarning != null) { 7147 String appName = getApplicationInfo().loadLabel(getPackageManager()) 7148 .toString(); 7149 String warning = "Detected problems with app native libraries\n" + 7150 "(please consult log for detail):\n" + dlwarning; 7151 if (isAppDebuggable) { 7152 new AlertDialog.Builder(this). 7153 setTitle(appName). 7154 setMessage(warning). 7155 setPositiveButton(android.R.string.ok, null). 7156 setCancelable(false). 7157 show(); 7158 } else { 7159 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 7160 } 7161 } 7162 } 7163 7164 // This property is set for all non-user builds except final release 7165 boolean isApiWarningEnabled = SystemProperties.getInt("ro.art.hiddenapi.warning", 0) == 1; 7166 7167 if (isAppDebuggable || isApiWarningEnabled) { 7168 if (!mMainThread.mHiddenApiWarningShown && VMRuntime.getRuntime().hasUsedHiddenApi()) { 7169 // Only show the warning once per process. 7170 mMainThread.mHiddenApiWarningShown = true; 7171 7172 String appName = getApplicationInfo().loadLabel(getPackageManager()) 7173 .toString(); 7174 String warning = "Detected problems with API compatibility\n" 7175 + "(visit g.co/dev/appcompat for more info)"; 7176 if (isAppDebuggable) { 7177 new AlertDialog.Builder(this) 7178 .setTitle(appName) 7179 .setMessage(warning) 7180 .setPositiveButton(android.R.string.ok, null) 7181 .setCancelable(false) 7182 .show(); 7183 } else { 7184 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 7185 } 7186 } 7187 } 7188 7189 mActivityTransitionState.enterReady(this); 7190 } 7191 7192 /** 7193 * Restart the activity. 7194 * @param start Indicates whether the activity should also be started after restart. 7195 * The option to not start immediately is needed in case a transaction with 7196 * multiple lifecycle transitions is in progress. 7197 */ 7198 final void performRestart(boolean start, String reason) { 7199 mCanEnterPictureInPicture = true; 7200 mFragments.noteStateNotSaved(); 7201 7202 if (mToken != null && mParent == null) { 7203 // No need to check mStopped, the roots will check if they were actually stopped. 7204 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 7205 } 7206 7207 if (mStopped) { 7208 mStopped = false; 7209 7210 synchronized (mManagedCursors) { 7211 final int N = mManagedCursors.size(); 7212 for (int i=0; i<N; i++) { 7213 ManagedCursor mc = mManagedCursors.get(i); 7214 if (mc.mReleased || mc.mUpdated) { 7215 if (!mc.mCursor.requery()) { 7216 if (getApplicationInfo().targetSdkVersion 7217 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 7218 throw new IllegalStateException( 7219 "trying to requery an already closed cursor " 7220 + mc.mCursor); 7221 } 7222 } 7223 mc.mReleased = false; 7224 mc.mUpdated = false; 7225 } 7226 } 7227 } 7228 7229 mCalled = false; 7230 mInstrumentation.callActivityOnRestart(this); 7231 writeEventLog(LOG_AM_ON_RESTART_CALLED, reason); 7232 if (!mCalled) { 7233 throw new SuperNotCalledException( 7234 "Activity " + mComponent.toShortString() + 7235 " did not call through to super.onRestart()"); 7236 } 7237 if (start) { 7238 performStart(reason); 7239 } 7240 } 7241 } 7242 7243 final void performResume(boolean followedByPause, String reason) { 7244 performRestart(true /* start */, reason); 7245 7246 mFragments.execPendingActions(); 7247 7248 mLastNonConfigurationInstances = null; 7249 7250 if (mAutoFillResetNeeded) { 7251 // When Activity is destroyed in paused state, and relaunch activity, there will be 7252 // extra onResume and onPause event, ignore the first onResume and onPause. 7253 // see ActivityThread.handleRelaunchActivity() 7254 mAutoFillIgnoreFirstResumePause = followedByPause; 7255 if (mAutoFillIgnoreFirstResumePause && DEBUG_LIFECYCLE) { 7256 Slog.v(TAG, "autofill will ignore first pause when relaunching " + this); 7257 } 7258 } 7259 7260 mCalled = false; 7261 // mResumed is set by the instrumentation 7262 mInstrumentation.callActivityOnResume(this); 7263 writeEventLog(LOG_AM_ON_RESUME_CALLED, reason); 7264 if (!mCalled) { 7265 throw new SuperNotCalledException( 7266 "Activity " + mComponent.toShortString() + 7267 " did not call through to super.onResume()"); 7268 } 7269 7270 // invisible activities must be finished before onResume() completes 7271 if (!mVisibleFromClient && !mFinished) { 7272 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 7273 if (getApplicationInfo().targetSdkVersion 7274 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 7275 throw new IllegalStateException( 7276 "Activity " + mComponent.toShortString() + 7277 " did not call finish() prior to onResume() completing"); 7278 } 7279 } 7280 7281 // Now really resume, and install the current status bar and menu. 7282 mCalled = false; 7283 7284 mFragments.dispatchResume(); 7285 mFragments.execPendingActions(); 7286 7287 onPostResume(); 7288 if (!mCalled) { 7289 throw new SuperNotCalledException( 7290 "Activity " + mComponent.toShortString() + 7291 " did not call through to super.onPostResume()"); 7292 } 7293 } 7294 7295 final void performPause() { 7296 mDoReportFullyDrawn = false; 7297 mFragments.dispatchPause(); 7298 mCalled = false; 7299 onPause(); 7300 writeEventLog(LOG_AM_ON_PAUSE_CALLED, "performPause"); 7301 mResumed = false; 7302 if (!mCalled && getApplicationInfo().targetSdkVersion 7303 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 7304 throw new SuperNotCalledException( 7305 "Activity " + mComponent.toShortString() + 7306 " did not call through to super.onPause()"); 7307 } 7308 } 7309 7310 final void performUserLeaving() { 7311 onUserInteraction(); 7312 onUserLeaveHint(); 7313 } 7314 7315 final void performStop(boolean preserveWindow, String reason) { 7316 mDoReportFullyDrawn = false; 7317 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 7318 7319 // Disallow entering picture-in-picture after the activity has been stopped 7320 mCanEnterPictureInPicture = false; 7321 7322 if (!mStopped) { 7323 if (mWindow != null) { 7324 mWindow.closeAllPanels(); 7325 } 7326 7327 // If we're preserving the window, don't setStoppedState to true, since we 7328 // need the window started immediately again. Stopping the window will 7329 // destroys hardware resources and causes flicker. 7330 if (!preserveWindow && mToken != null && mParent == null) { 7331 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 7332 } 7333 7334 mFragments.dispatchStop(); 7335 7336 mCalled = false; 7337 mInstrumentation.callActivityOnStop(this); 7338 writeEventLog(LOG_AM_ON_STOP_CALLED, reason); 7339 if (!mCalled) { 7340 throw new SuperNotCalledException( 7341 "Activity " + mComponent.toShortString() + 7342 " did not call through to super.onStop()"); 7343 } 7344 7345 synchronized (mManagedCursors) { 7346 final int N = mManagedCursors.size(); 7347 for (int i=0; i<N; i++) { 7348 ManagedCursor mc = mManagedCursors.get(i); 7349 if (!mc.mReleased) { 7350 mc.mCursor.deactivate(); 7351 mc.mReleased = true; 7352 } 7353 } 7354 } 7355 7356 mStopped = true; 7357 } 7358 mResumed = false; 7359 } 7360 7361 final void performDestroy() { 7362 mDestroyed = true; 7363 mWindow.destroy(); 7364 mFragments.dispatchDestroy(); 7365 onDestroy(); 7366 writeEventLog(LOG_AM_ON_DESTROY_CALLED, "performDestroy"); 7367 mFragments.doLoaderDestroy(); 7368 if (mVoiceInteractor != null) { 7369 mVoiceInteractor.detachActivity(); 7370 } 7371 } 7372 7373 final void dispatchMultiWindowModeChanged(boolean isInMultiWindowMode, 7374 Configuration newConfig) { 7375 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7376 "dispatchMultiWindowModeChanged " + this + ": " + isInMultiWindowMode 7377 + " " + newConfig); 7378 mFragments.dispatchMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7379 if (mWindow != null) { 7380 mWindow.onMultiWindowModeChanged(); 7381 } 7382 onMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7383 } 7384 7385 final void dispatchPictureInPictureModeChanged(boolean isInPictureInPictureMode, 7386 Configuration newConfig) { 7387 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7388 "dispatchPictureInPictureModeChanged " + this + ": " + isInPictureInPictureMode 7389 + " " + newConfig); 7390 mFragments.dispatchPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7391 if (mWindow != null) { 7392 mWindow.onPictureInPictureModeChanged(isInPictureInPictureMode); 7393 } 7394 onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7395 } 7396 7397 /** 7398 * @hide 7399 */ 7400 public final boolean isResumed() { 7401 return mResumed; 7402 } 7403 7404 private void storeHasCurrentPermissionRequest(Bundle bundle) { 7405 if (bundle != null && mHasCurrentPermissionsRequest) { 7406 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 7407 } 7408 } 7409 7410 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 7411 if (bundle != null) { 7412 mHasCurrentPermissionsRequest = bundle.getBoolean( 7413 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 7414 } 7415 } 7416 7417 void dispatchActivityResult(String who, int requestCode, 7418 int resultCode, Intent data) { 7419 if (false) Log.v( 7420 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 7421 + ", resCode=" + resultCode + ", data=" + data); 7422 mFragments.noteStateNotSaved(); 7423 if (who == null) { 7424 onActivityResult(requestCode, resultCode, data); 7425 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 7426 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 7427 if (TextUtils.isEmpty(who)) { 7428 dispatchRequestPermissionsResult(requestCode, data); 7429 } else { 7430 Fragment frag = mFragments.findFragmentByWho(who); 7431 if (frag != null) { 7432 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 7433 } 7434 } 7435 } else if (who.startsWith("@android:view:")) { 7436 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 7437 getActivityToken()); 7438 for (ViewRootImpl viewRoot : views) { 7439 if (viewRoot.getView() != null 7440 && viewRoot.getView().dispatchActivityResult( 7441 who, requestCode, resultCode, data)) { 7442 return; 7443 } 7444 } 7445 } else if (who.startsWith(AUTO_FILL_AUTH_WHO_PREFIX)) { 7446 Intent resultData = (resultCode == Activity.RESULT_OK) ? data : null; 7447 getAutofillManager().onAuthenticationResult(requestCode, resultData, getCurrentFocus()); 7448 } else { 7449 Fragment frag = mFragments.findFragmentByWho(who); 7450 if (frag != null) { 7451 frag.onActivityResult(requestCode, resultCode, data); 7452 } 7453 } 7454 } 7455 7456 /** 7457 * Request to put this activity in a mode where the user is locked to a restricted set of 7458 * applications. 7459 * 7460 * <p>If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns {@code true} 7461 * for this component, the current task will be launched directly into LockTask mode. Only apps 7462 * whitelisted by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])} can 7463 * be launched while LockTask mode is active. The user will not be able to leave this mode 7464 * until this activity calls {@link #stopLockTask()}. Calling this method while the device is 7465 * already in LockTask mode has no effect. 7466 * 7467 * <p>Otherwise, the current task will be launched into screen pinning mode. In this case, the 7468 * system will prompt the user with a dialog requesting permission to use this mode. 7469 * The user can exit at any time through instructions shown on the request dialog. Calling 7470 * {@link #stopLockTask()} will also terminate this mode. 7471 * 7472 * <p><strong>Note:</strong> this method can only be called when the activity is foreground. 7473 * That is, between {@link #onResume()} and {@link #onPause()}. 7474 * 7475 * @see #stopLockTask() 7476 * @see android.R.attr#lockTaskMode 7477 */ 7478 public void startLockTask() { 7479 try { 7480 ActivityManager.getService().startLockTaskModeByToken(mToken); 7481 } catch (RemoteException e) { 7482 } 7483 } 7484 7485 /** 7486 * Stop the current task from being locked. 7487 * 7488 * <p>Called to end the LockTask or screen pinning mode started by {@link #startLockTask()}. 7489 * This can only be called by activities that have called {@link #startLockTask()} previously. 7490 * 7491 * <p><strong>Note:</strong> If the device is in LockTask mode that is not initially started 7492 * by this activity, then calling this method will not terminate the LockTask mode, but only 7493 * finish its own task. The device will remain in LockTask mode, until the activity which 7494 * started the LockTask mode calls this method, or until its whitelist authorization is revoked 7495 * by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])}. 7496 * 7497 * @see #startLockTask() 7498 * @see android.R.attr#lockTaskMode 7499 * @see ActivityManager#getLockTaskModeState() 7500 */ 7501 public void stopLockTask() { 7502 try { 7503 ActivityManager.getService().stopLockTaskModeByToken(mToken); 7504 } catch (RemoteException e) { 7505 } 7506 } 7507 7508 /** 7509 * Shows the user the system defined message for telling the user how to exit 7510 * lock task mode. The task containing this activity must be in lock task mode at the time 7511 * of this call for the message to be displayed. 7512 */ 7513 public void showLockTaskEscapeMessage() { 7514 try { 7515 ActivityManager.getService().showLockTaskEscapeMessage(mToken); 7516 } catch (RemoteException e) { 7517 } 7518 } 7519 7520 /** 7521 * Check whether the caption on freeform windows is displayed directly on the content. 7522 * 7523 * @return True if caption is displayed on content, false if it pushes the content down. 7524 * 7525 * @see #setOverlayWithDecorCaptionEnabled(boolean) 7526 * @hide 7527 */ 7528 public boolean isOverlayWithDecorCaptionEnabled() { 7529 return mWindow.isOverlayWithDecorCaptionEnabled(); 7530 } 7531 7532 /** 7533 * Set whether the caption should displayed directly on the content rather than push it down. 7534 * 7535 * This affects only freeform windows since they display the caption and only the main 7536 * window of the activity. The caption is used to drag the window around and also shows 7537 * maximize and close action buttons. 7538 * @hide 7539 */ 7540 public void setOverlayWithDecorCaptionEnabled(boolean enabled) { 7541 mWindow.setOverlayWithDecorCaptionEnabled(enabled); 7542 } 7543 7544 /** 7545 * Interface for informing a translucent {@link Activity} once all visible activities below it 7546 * have completed drawing. This is necessary only after an {@link Activity} has been made 7547 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 7548 * translucent again following a call to {@link 7549 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 7550 * ActivityOptions)} 7551 * 7552 * @hide 7553 */ 7554 @SystemApi 7555 public interface TranslucentConversionListener { 7556 /** 7557 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 7558 * below the top one have been redrawn. Following this callback it is safe to make the top 7559 * Activity translucent because the underlying Activity has been drawn. 7560 * 7561 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 7562 * occurred waiting for the Activity to complete drawing. 7563 * 7564 * @see Activity#convertFromTranslucent() 7565 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 7566 */ 7567 public void onTranslucentConversionComplete(boolean drawComplete); 7568 } 7569 7570 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 7571 mHasCurrentPermissionsRequest = false; 7572 // If the package installer crashed we may have not data - best effort. 7573 String[] permissions = (data != null) ? data.getStringArrayExtra( 7574 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7575 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7576 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7577 onRequestPermissionsResult(requestCode, permissions, grantResults); 7578 } 7579 7580 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 7581 Fragment fragment) { 7582 // If the package installer crashed we may have not data - best effort. 7583 String[] permissions = (data != null) ? data.getStringArrayExtra( 7584 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7585 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7586 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7587 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 7588 } 7589 7590 /** @hide */ 7591 @Override 7592 public final void autofillClientAuthenticate(int authenticationId, IntentSender intent, 7593 Intent fillInIntent) { 7594 try { 7595 startIntentSenderForResultInner(intent, AUTO_FILL_AUTH_WHO_PREFIX, 7596 authenticationId, fillInIntent, 0, 0, null); 7597 } catch (IntentSender.SendIntentException e) { 7598 Log.e(TAG, "authenticate() failed for intent:" + intent, e); 7599 } 7600 } 7601 7602 /** @hide */ 7603 @Override 7604 public final void autofillClientResetableStateAvailable() { 7605 mAutoFillResetNeeded = true; 7606 } 7607 7608 /** @hide */ 7609 @Override 7610 public final boolean autofillClientRequestShowFillUi(@NonNull View anchor, int width, 7611 int height, @Nullable Rect anchorBounds, IAutofillWindowPresenter presenter) { 7612 final boolean wasShowing; 7613 7614 if (mAutofillPopupWindow == null) { 7615 wasShowing = false; 7616 mAutofillPopupWindow = new AutofillPopupWindow(presenter); 7617 } else { 7618 wasShowing = mAutofillPopupWindow.isShowing(); 7619 } 7620 mAutofillPopupWindow.update(anchor, 0, 0, width, height, anchorBounds); 7621 7622 return !wasShowing && mAutofillPopupWindow.isShowing(); 7623 } 7624 7625 /** @hide */ 7626 @Override 7627 public final void autofillClientDispatchUnhandledKey(@NonNull View anchor, 7628 @NonNull KeyEvent keyEvent) { 7629 ViewRootImpl rootImpl = anchor.getViewRootImpl(); 7630 if (rootImpl != null) { 7631 // dont care if anchorView is current focus, for example a custom view may only receive 7632 // touchEvent, not focusable but can still trigger autofill window. The Key handling 7633 // might be inside parent of the custom view. 7634 rootImpl.dispatchKeyFromAutofill(keyEvent); 7635 } 7636 } 7637 7638 /** @hide */ 7639 @Override 7640 public final boolean autofillClientRequestHideFillUi() { 7641 if (mAutofillPopupWindow == null) { 7642 return false; 7643 } 7644 mAutofillPopupWindow.dismiss(); 7645 mAutofillPopupWindow = null; 7646 return true; 7647 } 7648 7649 /** @hide */ 7650 @Override 7651 public final boolean autofillClientIsFillUiShowing() { 7652 return mAutofillPopupWindow != null && mAutofillPopupWindow.isShowing(); 7653 } 7654 7655 /** @hide */ 7656 @Override 7657 @NonNull 7658 public final View[] autofillClientFindViewsByAutofillIdTraversal( 7659 @NonNull AutofillId[] autofillId) { 7660 final View[] views = new View[autofillId.length]; 7661 final ArrayList<ViewRootImpl> roots = 7662 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7663 7664 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7665 final View rootView = roots.get(rootNum).getView(); 7666 7667 if (rootView != null) { 7668 final int viewCount = autofillId.length; 7669 for (int viewNum = 0; viewNum < viewCount; viewNum++) { 7670 if (views[viewNum] == null) { 7671 views[viewNum] = rootView.findViewByAutofillIdTraversal( 7672 autofillId[viewNum].getViewId()); 7673 } 7674 } 7675 } 7676 } 7677 7678 return views; 7679 } 7680 7681 /** @hide */ 7682 @Override 7683 @Nullable 7684 public final View autofillClientFindViewByAutofillIdTraversal(AutofillId autofillId) { 7685 final ArrayList<ViewRootImpl> roots = 7686 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7687 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7688 final View rootView = roots.get(rootNum).getView(); 7689 7690 if (rootView != null) { 7691 final View view = rootView.findViewByAutofillIdTraversal(autofillId.getViewId()); 7692 if (view != null) { 7693 return view; 7694 } 7695 } 7696 } 7697 7698 return null; 7699 } 7700 7701 /** @hide */ 7702 @Override 7703 public final @NonNull boolean[] autofillClientGetViewVisibility( 7704 @NonNull AutofillId[] autofillIds) { 7705 final int autofillIdCount = autofillIds.length; 7706 final boolean[] visible = new boolean[autofillIdCount]; 7707 for (int i = 0; i < autofillIdCount; i++) { 7708 final AutofillId autofillId = autofillIds[i]; 7709 final View view = autofillClientFindViewByAutofillIdTraversal(autofillId); 7710 if (view != null) { 7711 if (!autofillId.isVirtual()) { 7712 visible[i] = view.isVisibleToUser(); 7713 } else { 7714 visible[i] = view.isVisibleToUserForAutofill(autofillId.getVirtualChildId()); 7715 } 7716 } 7717 } 7718 if (android.view.autofill.Helper.sVerbose) { 7719 Log.v(TAG, "autofillClientGetViewVisibility(): " + Arrays.toString(visible)); 7720 } 7721 return visible; 7722 } 7723 7724 /** @hide */ 7725 public final @Nullable View autofillClientFindViewByAccessibilityIdTraversal(int viewId, 7726 int windowId) { 7727 final ArrayList<ViewRootImpl> roots = WindowManagerGlobal.getInstance() 7728 .getRootViews(getActivityToken()); 7729 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7730 final View rootView = roots.get(rootNum).getView(); 7731 if (rootView != null && rootView.getAccessibilityWindowId() == windowId) { 7732 final View view = rootView.findViewByAccessibilityIdTraversal(viewId); 7733 if (view != null) { 7734 return view; 7735 } 7736 } 7737 } 7738 return null; 7739 } 7740 7741 /** @hide */ 7742 @Override 7743 public final @Nullable IBinder autofillClientGetActivityToken() { 7744 return getActivityToken(); 7745 } 7746 7747 /** @hide */ 7748 @Override 7749 public final boolean autofillClientIsVisibleForAutofill() { 7750 return !mStopped; 7751 } 7752 7753 /** @hide */ 7754 @Override 7755 public final boolean autofillIsCompatibilityModeEnabled() { 7756 return isAutofillCompatibilityEnabled(); 7757 } 7758 7759 /** @hide */ 7760 @Override 7761 public final boolean isDisablingEnterExitEventForAutofill() { 7762 return mAutoFillIgnoreFirstResumePause || !mResumed; 7763 } 7764 7765 /** 7766 * If set to true, this indicates to the system that it should never take a 7767 * screenshot of the activity to be used as a representation while it is not in a started state. 7768 * <p> 7769 * Note that the system may use the window background of the theme instead to represent 7770 * the window when it is not running. 7771 * <p> 7772 * Also note that in comparison to {@link android.view.WindowManager.LayoutParams#FLAG_SECURE}, 7773 * this only affects the behavior when the activity's screenshot would be used as a 7774 * representation when the activity is not in a started state, i.e. in Overview. The system may 7775 * still take screenshots of the activity in other contexts; for example, when the user takes a 7776 * screenshot of the entire screen, or when the active 7777 * {@link android.service.voice.VoiceInteractionService} requests a screenshot via 7778 * {@link android.service.voice.VoiceInteractionSession#SHOW_WITH_SCREENSHOT}. 7779 * 7780 * @param disable {@code true} to disable preview screenshots; {@code false} otherwise. 7781 * @hide 7782 */ 7783 public void setDisablePreviewScreenshots(boolean disable) { 7784 try { 7785 ActivityManager.getService().setDisablePreviewScreenshots(mToken, disable); 7786 } catch (RemoteException e) { 7787 Log.e(TAG, "Failed to call setDisablePreviewScreenshots", e); 7788 } 7789 } 7790 7791 /** 7792 * Specifies whether an {@link Activity} should be shown on top of the the lock screen whenever 7793 * the lockscreen is up and the activity is resumed. Normally an activity will be transitioned 7794 * to the stopped state if it is started while the lockscreen is up, but with this flag set the 7795 * activity will remain in the resumed state visible on-top of the lock screen. This value can 7796 * be set as a manifest attribute using {@link android.R.attr#showWhenLocked}. 7797 * 7798 * @param showWhenLocked {@code true} to show the {@link Activity} on top of the lock screen; 7799 * {@code false} otherwise. 7800 * @see #setTurnScreenOn(boolean) 7801 * @see android.R.attr#turnScreenOn 7802 * @see android.R.attr#showWhenLocked 7803 */ 7804 public void setShowWhenLocked(boolean showWhenLocked) { 7805 try { 7806 ActivityManager.getService().setShowWhenLocked(mToken, showWhenLocked); 7807 } catch (RemoteException e) { 7808 Log.e(TAG, "Failed to call setShowWhenLocked", e); 7809 } 7810 } 7811 7812 /** 7813 * Specifies whether the screen should be turned on when the {@link Activity} is resumed. 7814 * Normally an activity will be transitioned to the stopped state if it is started while the 7815 * screen if off, but with this flag set the activity will cause the screen to turn on if the 7816 * activity will be visible and resumed due to the screen coming on. The screen will not be 7817 * turned on if the activity won't be visible after the screen is turned on. This flag is 7818 * normally used in conjunction with the {@link android.R.attr#showWhenLocked} flag to make sure 7819 * the activity is visible after the screen is turned on when the lockscreen is up. In addition, 7820 * if this flag is set and the activity calls {@link 7821 * KeyguardManager#requestDismissKeyguard(Activity, KeyguardManager.KeyguardDismissCallback)} 7822 * the screen will turn on. 7823 * 7824 * @param turnScreenOn {@code true} to turn on the screen; {@code false} otherwise. 7825 * 7826 * @see #setShowWhenLocked(boolean) 7827 * @see android.R.attr#turnScreenOn 7828 * @see android.R.attr#showWhenLocked 7829 */ 7830 public void setTurnScreenOn(boolean turnScreenOn) { 7831 try { 7832 ActivityManager.getService().setTurnScreenOn(mToken, turnScreenOn); 7833 } catch (RemoteException e) { 7834 Log.e(TAG, "Failed to call setTurnScreenOn", e); 7835 } 7836 } 7837 7838 /** 7839 * Registers remote animations per transition type for this activity. 7840 * 7841 * @param definition The remote animation definition that defines which transition whould run 7842 * which remote animation. 7843 * @hide 7844 */ 7845 @RequiresPermission(CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS) 7846 public void registerRemoteAnimations(RemoteAnimationDefinition definition) { 7847 try { 7848 ActivityManager.getService().registerRemoteAnimations(mToken, definition); 7849 } catch (RemoteException e) { 7850 Log.e(TAG, "Failed to call registerRemoteAnimations", e); 7851 } 7852 } 7853 7854 /** Log a lifecycle event for current user id and component class. */ 7855 private void writeEventLog(int event, String reason) { 7856 EventLog.writeEvent(event, UserHandle.myUserId(), getComponentName().getClassName(), 7857 reason); 7858 } 7859 7860 class HostCallbacks extends FragmentHostCallback<Activity> { 7861 public HostCallbacks() { 7862 super(Activity.this /*activity*/); 7863 } 7864 7865 @Override 7866 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 7867 Activity.this.dump(prefix, fd, writer, args); 7868 } 7869 7870 @Override 7871 public boolean onShouldSaveFragmentState(Fragment fragment) { 7872 return !isFinishing(); 7873 } 7874 7875 @Override 7876 public LayoutInflater onGetLayoutInflater() { 7877 final LayoutInflater result = Activity.this.getLayoutInflater(); 7878 if (onUseFragmentManagerInflaterFactory()) { 7879 return result.cloneInContext(Activity.this); 7880 } 7881 return result; 7882 } 7883 7884 @Override 7885 public boolean onUseFragmentManagerInflaterFactory() { 7886 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 7887 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 7888 } 7889 7890 @Override 7891 public Activity onGetHost() { 7892 return Activity.this; 7893 } 7894 7895 @Override 7896 public void onInvalidateOptionsMenu() { 7897 Activity.this.invalidateOptionsMenu(); 7898 } 7899 7900 @Override 7901 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 7902 Bundle options) { 7903 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 7904 } 7905 7906 @Override 7907 public void onStartActivityAsUserFromFragment( 7908 Fragment fragment, Intent intent, int requestCode, Bundle options, 7909 UserHandle user) { 7910 Activity.this.startActivityAsUserFromFragment( 7911 fragment, intent, requestCode, options, user); 7912 } 7913 7914 @Override 7915 public void onStartIntentSenderFromFragment(Fragment fragment, IntentSender intent, 7916 int requestCode, @Nullable Intent fillInIntent, int flagsMask, int flagsValues, 7917 int extraFlags, Bundle options) throws IntentSender.SendIntentException { 7918 if (mParent == null) { 7919 startIntentSenderForResultInner(intent, fragment.mWho, requestCode, fillInIntent, 7920 flagsMask, flagsValues, options); 7921 } else if (options != null) { 7922 mParent.startIntentSenderFromChildFragment(fragment, intent, requestCode, 7923 fillInIntent, flagsMask, flagsValues, extraFlags, options); 7924 } 7925 } 7926 7927 @Override 7928 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 7929 int requestCode) { 7930 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 7931 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 7932 startActivityForResult(who, intent, requestCode, null); 7933 } 7934 7935 @Override 7936 public boolean onHasWindowAnimations() { 7937 return getWindow() != null; 7938 } 7939 7940 @Override 7941 public int onGetWindowAnimations() { 7942 final Window w = getWindow(); 7943 return (w == null) ? 0 : w.getAttributes().windowAnimations; 7944 } 7945 7946 @Override 7947 public void onAttachFragment(Fragment fragment) { 7948 Activity.this.onAttachFragment(fragment); 7949 } 7950 7951 @Nullable 7952 @Override 7953 public <T extends View> T onFindViewById(int id) { 7954 return Activity.this.findViewById(id); 7955 } 7956 7957 @Override 7958 public boolean onHasView() { 7959 final Window w = getWindow(); 7960 return (w != null && w.peekDecorView() != null); 7961 } 7962 } 7963} 7964