Activity.java revision 6a20a194dd965c66d620d6e6dd0abbabd9ca6360
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 class ManagedDialog { 755 Dialog mDialog; 756 Bundle mArgs; 757 } 758 private SparseArray<ManagedDialog> mManagedDialogs; 759 760 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 761 private Instrumentation mInstrumentation; 762 private IBinder mToken; 763 private int mIdent; 764 /*package*/ String mEmbeddedID; 765 private Application mApplication; 766 /*package*/ Intent mIntent; 767 /*package*/ String mReferrer; 768 private ComponentName mComponent; 769 /*package*/ ActivityInfo mActivityInfo; 770 /*package*/ ActivityThread mMainThread; 771 Activity mParent; 772 boolean mCalled; 773 /*package*/ boolean mResumed; 774 /*package*/ boolean mStopped; 775 boolean mFinished; 776 boolean mStartedActivity; 777 private boolean mDestroyed; 778 private boolean mDoReportFullyDrawn = true; 779 private boolean mRestoredFromBundle; 780 781 /** {@code true} if the activity lifecycle is in a state which supports picture-in-picture. 782 * This only affects the client-side exception, the actual state check still happens in AMS. */ 783 private boolean mCanEnterPictureInPicture = false; 784 /** true if the activity is going through a transient pause */ 785 /*package*/ boolean mTemporaryPause = false; 786 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 787 /*package*/ boolean mChangingConfigurations = false; 788 /*package*/ int mConfigChangeFlags; 789 /*package*/ Configuration mCurrentConfig; 790 private SearchManager mSearchManager; 791 private MenuInflater mMenuInflater; 792 793 /** The autofill manager. Always access via {@link #getAutofillManager()}. */ 794 @Nullable private AutofillManager mAutofillManager; 795 796 static final class NonConfigurationInstances { 797 Object activity; 798 HashMap<String, Object> children; 799 FragmentManagerNonConfig fragments; 800 ArrayMap<String, LoaderManager> loaders; 801 VoiceInteractor voiceInteractor; 802 } 803 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 804 805 private Window mWindow; 806 807 private WindowManager mWindowManager; 808 /*package*/ View mDecor = null; 809 /*package*/ boolean mWindowAdded = false; 810 /*package*/ boolean mVisibleFromServer = false; 811 /*package*/ boolean mVisibleFromClient = true; 812 /*package*/ ActionBar mActionBar = null; 813 private boolean mEnableDefaultActionBarUp; 814 815 private VoiceInteractor mVoiceInteractor; 816 817 private CharSequence mTitle; 818 private int mTitleColor = 0; 819 820 // we must have a handler before the FragmentController is constructed 821 final Handler mHandler = new Handler(); 822 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 823 824 private static final class ManagedCursor { 825 ManagedCursor(Cursor cursor) { 826 mCursor = cursor; 827 mReleased = false; 828 mUpdated = false; 829 } 830 831 private final Cursor mCursor; 832 private boolean mReleased; 833 private boolean mUpdated; 834 } 835 836 @GuardedBy("mManagedCursors") 837 private final ArrayList<ManagedCursor> mManagedCursors = new ArrayList<>(); 838 839 @GuardedBy("this") 840 int mResultCode = RESULT_CANCELED; 841 @GuardedBy("this") 842 Intent mResultData = null; 843 844 private TranslucentConversionListener mTranslucentCallback; 845 private boolean mChangeCanvasToTranslucent; 846 847 private SearchEvent mSearchEvent; 848 849 private boolean mTitleReady = false; 850 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 851 852 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 853 private SpannableStringBuilder mDefaultKeySsb = null; 854 855 private ActivityManager.TaskDescription mTaskDescription = 856 new ActivityManager.TaskDescription(); 857 858 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 859 860 @SuppressWarnings("unused") 861 private final Object mInstanceTracker = StrictMode.trackActivity(this); 862 863 private Thread mUiThread; 864 865 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 866 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 867 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 868 869 private boolean mHasCurrentPermissionsRequest; 870 871 private boolean mAutoFillResetNeeded; 872 private boolean mAutoFillIgnoreFirstResumePause; 873 874 /** The last autofill id that was returned from {@link #getNextAutofillId()} */ 875 private int mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 876 877 private AutofillPopupWindow mAutofillPopupWindow; 878 879 private static native String getDlWarning(); 880 881 /** Return the intent that started this activity. */ 882 public Intent getIntent() { 883 return mIntent; 884 } 885 886 /** 887 * Change the intent returned by {@link #getIntent}. This holds a 888 * reference to the given intent; it does not copy it. Often used in 889 * conjunction with {@link #onNewIntent}. 890 * 891 * @param newIntent The new Intent object to return from getIntent 892 * 893 * @see #getIntent 894 * @see #onNewIntent 895 */ 896 public void setIntent(Intent newIntent) { 897 mIntent = newIntent; 898 } 899 900 /** Return the application that owns this activity. */ 901 public final Application getApplication() { 902 return mApplication; 903 } 904 905 /** Is this activity embedded inside of another activity? */ 906 public final boolean isChild() { 907 return mParent != null; 908 } 909 910 /** Return the parent activity if this view is an embedded child. */ 911 public final Activity getParent() { 912 return mParent; 913 } 914 915 /** Retrieve the window manager for showing custom windows. */ 916 public WindowManager getWindowManager() { 917 return mWindowManager; 918 } 919 920 /** 921 * Retrieve the current {@link android.view.Window} for the activity. 922 * This can be used to directly access parts of the Window API that 923 * are not available through Activity/Screen. 924 * 925 * @return Window The current window, or null if the activity is not 926 * visual. 927 */ 928 public Window getWindow() { 929 return mWindow; 930 } 931 932 /** 933 * Return the LoaderManager for this activity, creating it if needed. 934 * 935 * @deprecated Use {@link android.support.v4.app.FragmentActivity#getSupportLoaderManager()} 936 */ 937 @Deprecated 938 public LoaderManager getLoaderManager() { 939 return mFragments.getLoaderManager(); 940 } 941 942 /** 943 * Calls {@link android.view.Window#getCurrentFocus} on the 944 * Window of this Activity to return the currently focused view. 945 * 946 * @return View The current View with focus or null. 947 * 948 * @see #getWindow 949 * @see android.view.Window#getCurrentFocus 950 */ 951 @Nullable 952 public View getCurrentFocus() { 953 return mWindow != null ? mWindow.getCurrentFocus() : null; 954 } 955 956 /** 957 * (Create and) return the autofill manager 958 * 959 * @return The autofill manager 960 */ 961 @NonNull private AutofillManager getAutofillManager() { 962 if (mAutofillManager == null) { 963 mAutofillManager = getSystemService(AutofillManager.class); 964 } 965 966 return mAutofillManager; 967 } 968 969 @Override 970 protected void attachBaseContext(Context newBase) { 971 super.attachBaseContext(newBase); 972 newBase.setAutofillClient(this); 973 } 974 975 /** @hide */ 976 @Override 977 public final AutofillClient getAutofillClient() { 978 return this; 979 } 980 981 /** 982 * Called when the activity is starting. This is where most initialization 983 * should go: calling {@link #setContentView(int)} to inflate the 984 * activity's UI, using {@link #findViewById} to programmatically interact 985 * with widgets in the UI, calling 986 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 987 * cursors for data being displayed, etc. 988 * 989 * <p>You can call {@link #finish} from within this function, in 990 * which case onDestroy() will be immediately called without any of the rest 991 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 992 * {@link #onPause}, etc) executing. 993 * 994 * <p><em>Derived classes must call through to the super class's 995 * implementation of this method. If they do not, an exception will be 996 * thrown.</em></p> 997 * 998 * @param savedInstanceState If the activity is being re-initialized after 999 * previously being shut down then this Bundle contains the data it most 1000 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1001 * 1002 * @see #onStart 1003 * @see #onSaveInstanceState 1004 * @see #onRestoreInstanceState 1005 * @see #onPostCreate 1006 */ 1007 @MainThread 1008 @CallSuper 1009 protected void onCreate(@Nullable Bundle savedInstanceState) { 1010 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 1011 1012 if (mLastNonConfigurationInstances != null) { 1013 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 1014 } 1015 if (mActivityInfo.parentActivityName != null) { 1016 if (mActionBar == null) { 1017 mEnableDefaultActionBarUp = true; 1018 } else { 1019 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 1020 } 1021 } 1022 if (savedInstanceState != null) { 1023 mAutoFillResetNeeded = savedInstanceState.getBoolean(AUTOFILL_RESET_NEEDED, false); 1024 mLastAutofillId = savedInstanceState.getInt(LAST_AUTOFILL_ID, 1025 View.LAST_APP_AUTOFILL_ID); 1026 1027 if (mAutoFillResetNeeded) { 1028 getAutofillManager().onCreate(savedInstanceState); 1029 } 1030 1031 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 1032 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 1033 ? mLastNonConfigurationInstances.fragments : null); 1034 } 1035 mFragments.dispatchCreate(); 1036 getApplication().dispatchActivityCreated(this, savedInstanceState); 1037 if (mVoiceInteractor != null) { 1038 mVoiceInteractor.attachActivity(this); 1039 } 1040 mRestoredFromBundle = savedInstanceState != null; 1041 mCalled = true; 1042 } 1043 1044 /** 1045 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 1046 * the attribute {@link android.R.attr#persistableMode} set to 1047 * <code>persistAcrossReboots</code>. 1048 * 1049 * @param savedInstanceState if the activity is being re-initialized after 1050 * previously being shut down then this Bundle contains the data it most 1051 * recently supplied in {@link #onSaveInstanceState}. 1052 * <b><i>Note: Otherwise it is null.</i></b> 1053 * @param persistentState if the activity is being re-initialized after 1054 * previously being shut down or powered off then this Bundle contains the data it most 1055 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 1056 * <b><i>Note: Otherwise it is null.</i></b> 1057 * 1058 * @see #onCreate(android.os.Bundle) 1059 * @see #onStart 1060 * @see #onSaveInstanceState 1061 * @see #onRestoreInstanceState 1062 * @see #onPostCreate 1063 */ 1064 public void onCreate(@Nullable Bundle savedInstanceState, 1065 @Nullable PersistableBundle persistentState) { 1066 onCreate(savedInstanceState); 1067 } 1068 1069 /** 1070 * The hook for {@link ActivityThread} to restore the state of this activity. 1071 * 1072 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1073 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1074 * 1075 * @param savedInstanceState contains the saved state 1076 */ 1077 final void performRestoreInstanceState(Bundle savedInstanceState) { 1078 onRestoreInstanceState(savedInstanceState); 1079 restoreManagedDialogs(savedInstanceState); 1080 } 1081 1082 /** 1083 * The hook for {@link ActivityThread} to restore the state of this activity. 1084 * 1085 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1086 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1087 * 1088 * @param savedInstanceState contains the saved state 1089 * @param persistentState contains the persistable saved state 1090 */ 1091 final void performRestoreInstanceState(Bundle savedInstanceState, 1092 PersistableBundle persistentState) { 1093 onRestoreInstanceState(savedInstanceState, persistentState); 1094 if (savedInstanceState != null) { 1095 restoreManagedDialogs(savedInstanceState); 1096 } 1097 } 1098 1099 /** 1100 * This method is called after {@link #onStart} when the activity is 1101 * being re-initialized from a previously saved state, given here in 1102 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1103 * to restore their state, but it is sometimes convenient to do it here 1104 * after all of the initialization has been done or to allow subclasses to 1105 * decide whether to use your default implementation. The default 1106 * implementation of this method performs a restore of any view state that 1107 * had previously been frozen by {@link #onSaveInstanceState}. 1108 * 1109 * <p>This method is called between {@link #onStart} and 1110 * {@link #onPostCreate}. 1111 * 1112 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1113 * 1114 * @see #onCreate 1115 * @see #onPostCreate 1116 * @see #onResume 1117 * @see #onSaveInstanceState 1118 */ 1119 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1120 if (mWindow != null) { 1121 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1122 if (windowState != null) { 1123 mWindow.restoreHierarchyState(windowState); 1124 } 1125 } 1126 } 1127 1128 /** 1129 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1130 * created with the attribute {@link android.R.attr#persistableMode} set to 1131 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1132 * came from the restored PersistableBundle first 1133 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1134 * 1135 * <p>This method is called between {@link #onStart} and 1136 * {@link #onPostCreate}. 1137 * 1138 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1139 * 1140 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1141 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1142 * 1143 * @see #onRestoreInstanceState(Bundle) 1144 * @see #onCreate 1145 * @see #onPostCreate 1146 * @see #onResume 1147 * @see #onSaveInstanceState 1148 */ 1149 public void onRestoreInstanceState(Bundle savedInstanceState, 1150 PersistableBundle persistentState) { 1151 if (savedInstanceState != null) { 1152 onRestoreInstanceState(savedInstanceState); 1153 } 1154 } 1155 1156 /** 1157 * Restore the state of any saved managed dialogs. 1158 * 1159 * @param savedInstanceState The bundle to restore from. 1160 */ 1161 private void restoreManagedDialogs(Bundle savedInstanceState) { 1162 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1163 if (b == null) { 1164 return; 1165 } 1166 1167 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1168 final int numDialogs = ids.length; 1169 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1170 for (int i = 0; i < numDialogs; i++) { 1171 final Integer dialogId = ids[i]; 1172 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1173 if (dialogState != null) { 1174 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1175 // so tell createDialog() not to do it, otherwise we get an exception 1176 final ManagedDialog md = new ManagedDialog(); 1177 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1178 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1179 if (md.mDialog != null) { 1180 mManagedDialogs.put(dialogId, md); 1181 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1182 md.mDialog.onRestoreInstanceState(dialogState); 1183 } 1184 } 1185 } 1186 } 1187 1188 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1189 final Dialog dialog = onCreateDialog(dialogId, args); 1190 if (dialog == null) { 1191 return null; 1192 } 1193 dialog.dispatchOnCreate(state); 1194 return dialog; 1195 } 1196 1197 private static String savedDialogKeyFor(int key) { 1198 return SAVED_DIALOG_KEY_PREFIX + key; 1199 } 1200 1201 private static String savedDialogArgsKeyFor(int key) { 1202 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1203 } 1204 1205 /** 1206 * Called when activity start-up is complete (after {@link #onStart} 1207 * and {@link #onRestoreInstanceState} have been called). Applications will 1208 * generally not implement this method; it is intended for system 1209 * classes to do final initialization after application code has run. 1210 * 1211 * <p><em>Derived classes must call through to the super class's 1212 * implementation of this method. If they do not, an exception will be 1213 * thrown.</em></p> 1214 * 1215 * @param savedInstanceState If the activity is being re-initialized after 1216 * previously being shut down then this Bundle contains the data it most 1217 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1218 * @see #onCreate 1219 */ 1220 @CallSuper 1221 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1222 if (!isChild()) { 1223 mTitleReady = true; 1224 onTitleChanged(getTitle(), getTitleColor()); 1225 } 1226 1227 mCalled = true; 1228 } 1229 1230 /** 1231 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1232 * created with the attribute {@link android.R.attr#persistableMode} set to 1233 * <code>persistAcrossReboots</code>. 1234 * 1235 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1236 * @param persistentState The data caming from the PersistableBundle first 1237 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1238 * 1239 * @see #onCreate 1240 */ 1241 public void onPostCreate(@Nullable Bundle savedInstanceState, 1242 @Nullable PersistableBundle persistentState) { 1243 onPostCreate(savedInstanceState); 1244 } 1245 1246 /** 1247 * Called after {@link #onCreate} — or after {@link #onRestart} when 1248 * the activity had been stopped, but is now again being displayed to the 1249 * user. It will be followed by {@link #onResume}. 1250 * 1251 * <p><em>Derived classes must call through to the super class's 1252 * implementation of this method. If they do not, an exception will be 1253 * thrown.</em></p> 1254 * 1255 * @see #onCreate 1256 * @see #onStop 1257 * @see #onResume 1258 */ 1259 @CallSuper 1260 protected void onStart() { 1261 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1262 mCalled = true; 1263 1264 mFragments.doLoaderStart(); 1265 1266 getApplication().dispatchActivityStarted(this); 1267 1268 if (mAutoFillResetNeeded) { 1269 getAutofillManager().onVisibleForAutofill(); 1270 } 1271 } 1272 1273 /** 1274 * Called after {@link #onStop} when the current activity is being 1275 * re-displayed to the user (the user has navigated back to it). It will 1276 * be followed by {@link #onStart} and then {@link #onResume}. 1277 * 1278 * <p>For activities that are using raw {@link Cursor} objects (instead of 1279 * creating them through 1280 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1281 * this is usually the place 1282 * where the cursor should be requeried (because you had deactivated it in 1283 * {@link #onStop}. 1284 * 1285 * <p><em>Derived classes must call through to the super class's 1286 * implementation of this method. If they do not, an exception will be 1287 * thrown.</em></p> 1288 * 1289 * @see #onStop 1290 * @see #onStart 1291 * @see #onResume 1292 */ 1293 @CallSuper 1294 protected void onRestart() { 1295 mCalled = true; 1296 } 1297 1298 /** 1299 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1300 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1301 * to give the activity a hint that its state is no longer saved -- it will generally 1302 * be called after {@link #onSaveInstanceState} and prior to the activity being 1303 * resumed/started again. 1304 */ 1305 public void onStateNotSaved() { 1306 } 1307 1308 /** 1309 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1310 * {@link #onPause}, for your activity to start interacting with the user. 1311 * This is a good place to begin animations, open exclusive-access devices 1312 * (such as the camera), etc. 1313 * 1314 * <p>Keep in mind that onResume is not the best indicator that your activity 1315 * is visible to the user; a system window such as the keyguard may be in 1316 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1317 * activity is visible to the user (for example, to resume a game). 1318 * 1319 * <p><em>Derived classes must call through to the super class's 1320 * implementation of this method. If they do not, an exception will be 1321 * thrown.</em></p> 1322 * 1323 * @see #onRestoreInstanceState 1324 * @see #onRestart 1325 * @see #onPostResume 1326 * @see #onPause 1327 */ 1328 @CallSuper 1329 protected void onResume() { 1330 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1331 getApplication().dispatchActivityResumed(this); 1332 mActivityTransitionState.onResume(this, isTopOfTask()); 1333 if (mAutoFillResetNeeded) { 1334 if (!mAutoFillIgnoreFirstResumePause) { 1335 View focus = getCurrentFocus(); 1336 if (focus != null && focus.canNotifyAutofillEnterExitEvent()) { 1337 // TODO: in Activity killed/recreated case, i.e. SessionLifecycleTest# 1338 // testDatasetVisibleWhileAutofilledAppIsLifecycled: the View's initial 1339 // window visibility after recreation is INVISIBLE in onResume() and next frame 1340 // ViewRootImpl.performTraversals() changes window visibility to VISIBLE. 1341 // So we cannot call View.notifyEnterOrExited() which will do nothing 1342 // when View.isVisibleToUser() is false. 1343 getAutofillManager().notifyViewEntered(focus); 1344 } 1345 } 1346 } 1347 mCalled = true; 1348 } 1349 1350 /** 1351 * Called when activity resume is complete (after {@link #onResume} has 1352 * been called). Applications will generally not implement this method; 1353 * it is intended for system classes to do final setup after application 1354 * resume code has run. 1355 * 1356 * <p><em>Derived classes must call through to the super class's 1357 * implementation of this method. If they do not, an exception will be 1358 * thrown.</em></p> 1359 * 1360 * @see #onResume 1361 */ 1362 @CallSuper 1363 protected void onPostResume() { 1364 final Window win = getWindow(); 1365 if (win != null) win.makeActive(); 1366 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1367 mCalled = true; 1368 } 1369 1370 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1371 if (mVoiceInteractor != null) { 1372 for (Request activeRequest: mVoiceInteractor.getActiveRequests()) { 1373 activeRequest.cancel(); 1374 activeRequest.clear(); 1375 } 1376 } 1377 if (voiceInteractor == null) { 1378 mVoiceInteractor = null; 1379 } else { 1380 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1381 Looper.myLooper()); 1382 } 1383 } 1384 1385 /** 1386 * Gets the next autofill ID. 1387 * 1388 * <p>All IDs will be bigger than {@link View#LAST_APP_AUTOFILL_ID}. All IDs returned 1389 * will be unique. 1390 * 1391 * @return A ID that is unique in the activity 1392 * 1393 * {@hide} 1394 */ 1395 public int getNextAutofillId() { 1396 if (mLastAutofillId == Integer.MAX_VALUE - 1) { 1397 mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 1398 } 1399 1400 mLastAutofillId++; 1401 1402 return mLastAutofillId; 1403 } 1404 1405 /** 1406 * Check whether this activity is running as part of a voice interaction with the user. 1407 * If true, it should perform its interaction with the user through the 1408 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1409 */ 1410 public boolean isVoiceInteraction() { 1411 return mVoiceInteractor != null; 1412 } 1413 1414 /** 1415 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1416 * of a voice interaction. That is, returns true if this activity was directly 1417 * started by the voice interaction service as the initiation of a voice interaction. 1418 * Otherwise, for example if it was started by another activity while under voice 1419 * interaction, returns false. 1420 */ 1421 public boolean isVoiceInteractionRoot() { 1422 try { 1423 return mVoiceInteractor != null 1424 && ActivityManager.getService().isRootVoiceInteraction(mToken); 1425 } catch (RemoteException e) { 1426 } 1427 return false; 1428 } 1429 1430 /** 1431 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1432 * interact with this activity. 1433 */ 1434 public VoiceInteractor getVoiceInteractor() { 1435 return mVoiceInteractor; 1436 } 1437 1438 /** 1439 * Queries whether the currently enabled voice interaction service supports returning 1440 * a voice interactor for use by the activity. This is valid only for the duration of the 1441 * activity. 1442 * 1443 * @return whether the current voice interaction service supports local voice interaction 1444 */ 1445 public boolean isLocalVoiceInteractionSupported() { 1446 try { 1447 return ActivityManager.getService().supportsLocalVoiceInteraction(); 1448 } catch (RemoteException re) { 1449 } 1450 return false; 1451 } 1452 1453 /** 1454 * Starts a local voice interaction session. When ready, 1455 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1456 * to the registered voice interaction service. 1457 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1458 */ 1459 public void startLocalVoiceInteraction(Bundle privateOptions) { 1460 try { 1461 ActivityManager.getService().startLocalVoiceInteraction(mToken, privateOptions); 1462 } catch (RemoteException re) { 1463 } 1464 } 1465 1466 /** 1467 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1468 * voice interaction session being started. You can now retrieve a voice interactor using 1469 * {@link #getVoiceInteractor()}. 1470 */ 1471 public void onLocalVoiceInteractionStarted() { 1472 } 1473 1474 /** 1475 * Callback to indicate that the local voice interaction has stopped either 1476 * because it was requested through a call to {@link #stopLocalVoiceInteraction()} 1477 * or because it was canceled by the user. The previously acquired {@link VoiceInteractor} 1478 * is no longer valid after this. 1479 */ 1480 public void onLocalVoiceInteractionStopped() { 1481 } 1482 1483 /** 1484 * Request to terminate the current voice interaction that was previously started 1485 * using {@link #startLocalVoiceInteraction(Bundle)}. When the interaction is 1486 * terminated, {@link #onLocalVoiceInteractionStopped()} will be called. 1487 */ 1488 public void stopLocalVoiceInteraction() { 1489 try { 1490 ActivityManager.getService().stopLocalVoiceInteraction(mToken); 1491 } catch (RemoteException re) { 1492 } 1493 } 1494 1495 /** 1496 * This is called for activities that set launchMode to "singleTop" in 1497 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1498 * flag when calling {@link #startActivity}. In either case, when the 1499 * activity is re-launched while at the top of the activity stack instead 1500 * of a new instance of the activity being started, onNewIntent() will be 1501 * called on the existing instance with the Intent that was used to 1502 * re-launch it. 1503 * 1504 * <p>An activity will always be paused before receiving a new intent, so 1505 * you can count on {@link #onResume} being called after this method. 1506 * 1507 * <p>Note that {@link #getIntent} still returns the original Intent. You 1508 * can use {@link #setIntent} to update it to this new Intent. 1509 * 1510 * @param intent The new intent that was started for the activity. 1511 * 1512 * @see #getIntent 1513 * @see #setIntent 1514 * @see #onResume 1515 */ 1516 protected void onNewIntent(Intent intent) { 1517 } 1518 1519 /** 1520 * The hook for {@link ActivityThread} to save the state of this activity. 1521 * 1522 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1523 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1524 * 1525 * @param outState The bundle to save the state to. 1526 */ 1527 final void performSaveInstanceState(Bundle outState) { 1528 onSaveInstanceState(outState); 1529 saveManagedDialogs(outState); 1530 mActivityTransitionState.saveState(outState); 1531 storeHasCurrentPermissionRequest(outState); 1532 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1533 } 1534 1535 /** 1536 * The hook for {@link ActivityThread} to save the state of this activity. 1537 * 1538 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1539 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1540 * 1541 * @param outState The bundle to save the state to. 1542 * @param outPersistentState The bundle to save persistent state to. 1543 */ 1544 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1545 onSaveInstanceState(outState, outPersistentState); 1546 saveManagedDialogs(outState); 1547 storeHasCurrentPermissionRequest(outState); 1548 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1549 ", " + outPersistentState); 1550 } 1551 1552 /** 1553 * Called to retrieve per-instance state from an activity before being killed 1554 * so that the state can be restored in {@link #onCreate} or 1555 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1556 * will be passed to both). 1557 * 1558 * <p>This method is called before an activity may be killed so that when it 1559 * comes back some time in the future it can restore its state. For example, 1560 * if activity B is launched in front of activity A, and at some point activity 1561 * A is killed to reclaim resources, activity A will have a chance to save the 1562 * current state of its user interface via this method so that when the user 1563 * returns to activity A, the state of the user interface can be restored 1564 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1565 * 1566 * <p>Do not confuse this method with activity lifecycle callbacks such as 1567 * {@link #onPause}, which is always called when an activity is being placed 1568 * in the background or on its way to destruction, or {@link #onStop} which 1569 * is called before destruction. One example of when {@link #onPause} and 1570 * {@link #onStop} is called and not this method is when a user navigates back 1571 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1572 * on B because that particular instance will never be restored, so the 1573 * system avoids calling it. An example when {@link #onPause} is called and 1574 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1575 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1576 * killed during the lifetime of B since the state of the user interface of 1577 * A will stay intact. 1578 * 1579 * <p>The default implementation takes care of most of the UI per-instance 1580 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1581 * view in the hierarchy that has an id, and by saving the id of the currently 1582 * focused view (all of which is restored by the default implementation of 1583 * {@link #onRestoreInstanceState}). If you override this method to save additional 1584 * information not captured by each individual view, you will likely want to 1585 * call through to the default implementation, otherwise be prepared to save 1586 * all of the state of each view yourself. 1587 * 1588 * <p>If called, this method will occur after {@link #onStop} for applications 1589 * targeting platforms starting with {@link android.os.Build.VERSION_CODES#P}. 1590 * For applications targeting earlier platform versions this method will occur 1591 * before {@link #onStop} and there are no guarantees about whether it will 1592 * occur before or after {@link #onPause}. 1593 * 1594 * @param outState Bundle in which to place your saved state. 1595 * 1596 * @see #onCreate 1597 * @see #onRestoreInstanceState 1598 * @see #onPause 1599 */ 1600 protected void onSaveInstanceState(Bundle outState) { 1601 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1602 1603 outState.putInt(LAST_AUTOFILL_ID, mLastAutofillId); 1604 Parcelable p = mFragments.saveAllState(); 1605 if (p != null) { 1606 outState.putParcelable(FRAGMENTS_TAG, p); 1607 } 1608 if (mAutoFillResetNeeded) { 1609 outState.putBoolean(AUTOFILL_RESET_NEEDED, true); 1610 getAutofillManager().onSaveInstanceState(outState); 1611 } 1612 getApplication().dispatchActivitySaveInstanceState(this, outState); 1613 } 1614 1615 /** 1616 * This is the same as {@link #onSaveInstanceState} but is called for activities 1617 * created with the attribute {@link android.R.attr#persistableMode} set to 1618 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1619 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1620 * the first time that this activity is restarted following the next device reboot. 1621 * 1622 * @param outState Bundle in which to place your saved state. 1623 * @param outPersistentState State which will be saved across reboots. 1624 * 1625 * @see #onSaveInstanceState(Bundle) 1626 * @see #onCreate 1627 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1628 * @see #onPause 1629 */ 1630 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1631 onSaveInstanceState(outState); 1632 } 1633 1634 /** 1635 * Save the state of any managed dialogs. 1636 * 1637 * @param outState place to store the saved state. 1638 */ 1639 private void saveManagedDialogs(Bundle outState) { 1640 if (mManagedDialogs == null) { 1641 return; 1642 } 1643 1644 final int numDialogs = mManagedDialogs.size(); 1645 if (numDialogs == 0) { 1646 return; 1647 } 1648 1649 Bundle dialogState = new Bundle(); 1650 1651 int[] ids = new int[mManagedDialogs.size()]; 1652 1653 // save each dialog's bundle, gather the ids 1654 for (int i = 0; i < numDialogs; i++) { 1655 final int key = mManagedDialogs.keyAt(i); 1656 ids[i] = key; 1657 final ManagedDialog md = mManagedDialogs.valueAt(i); 1658 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1659 if (md.mArgs != null) { 1660 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1661 } 1662 } 1663 1664 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1665 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1666 } 1667 1668 1669 /** 1670 * Called as part of the activity lifecycle when an activity is going into 1671 * the background, but has not (yet) been killed. The counterpart to 1672 * {@link #onResume}. 1673 * 1674 * <p>When activity B is launched in front of activity A, this callback will 1675 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1676 * so be sure to not do anything lengthy here. 1677 * 1678 * <p>This callback is mostly used for saving any persistent state the 1679 * activity is editing, to present a "edit in place" model to the user and 1680 * making sure nothing is lost if there are not enough resources to start 1681 * the new activity without first killing this one. This is also a good 1682 * place to do things like stop animations and other things that consume a 1683 * noticeable amount of CPU in order to make the switch to the next activity 1684 * as fast as possible, or to close resources that are exclusive access 1685 * such as the camera. 1686 * 1687 * <p>In situations where the system needs more memory it may kill paused 1688 * processes to reclaim resources. Because of this, you should be sure 1689 * that all of your state is saved by the time you return from 1690 * this function. In general {@link #onSaveInstanceState} is used to save 1691 * per-instance state in the activity and this method is used to store 1692 * global persistent data (in content providers, files, etc.) 1693 * 1694 * <p>After receiving this call you will usually receive a following call 1695 * to {@link #onStop} (after the next activity has been resumed and 1696 * displayed), however in some cases there will be a direct call back to 1697 * {@link #onResume} without going through the stopped state. 1698 * 1699 * <p><em>Derived classes must call through to the super class's 1700 * implementation of this method. If they do not, an exception will be 1701 * thrown.</em></p> 1702 * 1703 * @see #onResume 1704 * @see #onSaveInstanceState 1705 * @see #onStop 1706 */ 1707 @CallSuper 1708 protected void onPause() { 1709 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1710 getApplication().dispatchActivityPaused(this); 1711 if (mAutoFillResetNeeded) { 1712 if (!mAutoFillIgnoreFirstResumePause) { 1713 if (DEBUG_LIFECYCLE) Slog.v(TAG, "autofill notifyViewExited " + this); 1714 View focus = getCurrentFocus(); 1715 if (focus != null && focus.canNotifyAutofillEnterExitEvent()) { 1716 getAutofillManager().notifyViewExited(focus); 1717 } 1718 } else { 1719 // reset after first pause() 1720 if (DEBUG_LIFECYCLE) Slog.v(TAG, "autofill got first pause " + this); 1721 mAutoFillIgnoreFirstResumePause = false; 1722 } 1723 } 1724 mCalled = true; 1725 } 1726 1727 /** 1728 * Called as part of the activity lifecycle when an activity is about to go 1729 * into the background as the result of user choice. For example, when the 1730 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1731 * when an incoming phone call causes the in-call Activity to be automatically 1732 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1733 * the activity being interrupted. In cases when it is invoked, this method 1734 * is called right before the activity's {@link #onPause} callback. 1735 * 1736 * <p>This callback and {@link #onUserInteraction} are intended to help 1737 * activities manage status bar notifications intelligently; specifically, 1738 * for helping activities determine the proper time to cancel a notification. 1739 * 1740 * @see #onUserInteraction() 1741 */ 1742 protected void onUserLeaveHint() { 1743 } 1744 1745 /** 1746 * @deprecated Method doesn't do anything and will be removed in the future. 1747 */ 1748 @Deprecated 1749 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1750 return false; 1751 } 1752 1753 /** 1754 * Generate a new description for this activity. This method is called 1755 * before stopping the activity and can, if desired, return some textual 1756 * description of its current state to be displayed to the user. 1757 * 1758 * <p>The default implementation returns null, which will cause you to 1759 * inherit the description from the previous activity. If all activities 1760 * return null, generally the label of the top activity will be used as the 1761 * description. 1762 * 1763 * @return A description of what the user is doing. It should be short and 1764 * sweet (only a few words). 1765 * 1766 * @see #onSaveInstanceState 1767 * @see #onStop 1768 */ 1769 @Nullable 1770 public CharSequence onCreateDescription() { 1771 return null; 1772 } 1773 1774 /** 1775 * This is called when the user is requesting an assist, to build a full 1776 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1777 * application. You can override this method to place into the bundle anything 1778 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1779 * of the assist Intent. 1780 * 1781 * <p>This function will be called after any global assist callbacks that had 1782 * been registered with {@link Application#registerOnProvideAssistDataListener 1783 * Application.registerOnProvideAssistDataListener}. 1784 */ 1785 public void onProvideAssistData(Bundle data) { 1786 } 1787 1788 /** 1789 * This is called when the user is requesting an assist, to provide references 1790 * to content related to the current activity. Before being called, the 1791 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1792 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1793 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1794 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1795 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1796 * 1797 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1798 * context of the activity, and fill in its ClipData with additional content of 1799 * interest that the user is currently viewing. For example, an image gallery application 1800 * that has launched in to an activity allowing the user to swipe through pictures should 1801 * modify the intent to reference the current image they are looking it; such an 1802 * application when showing a list of pictures should add a ClipData that has 1803 * references to all of the pictures currently visible on screen.</p> 1804 * 1805 * @param outContent The assist content to return. 1806 */ 1807 public void onProvideAssistContent(AssistContent outContent) { 1808 } 1809 1810 /** 1811 * Request the Keyboard Shortcuts screen to show up. This will trigger 1812 * {@link #onProvideKeyboardShortcuts} to retrieve the shortcuts for the foreground activity. 1813 */ 1814 public final void requestShowKeyboardShortcuts() { 1815 Intent intent = new Intent(Intent.ACTION_SHOW_KEYBOARD_SHORTCUTS); 1816 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1817 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1818 } 1819 1820 /** 1821 * Dismiss the Keyboard Shortcuts screen. 1822 */ 1823 public final void dismissKeyboardShortcutsHelper() { 1824 Intent intent = new Intent(Intent.ACTION_DISMISS_KEYBOARD_SHORTCUTS); 1825 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1826 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1827 } 1828 1829 @Override 1830 public void onProvideKeyboardShortcuts( 1831 List<KeyboardShortcutGroup> data, Menu menu, int deviceId) { 1832 if (menu == null) { 1833 return; 1834 } 1835 KeyboardShortcutGroup group = null; 1836 int menuSize = menu.size(); 1837 for (int i = 0; i < menuSize; ++i) { 1838 final MenuItem item = menu.getItem(i); 1839 final CharSequence title = item.getTitle(); 1840 final char alphaShortcut = item.getAlphabeticShortcut(); 1841 final int alphaModifiers = item.getAlphabeticModifiers(); 1842 if (title != null && alphaShortcut != MIN_VALUE) { 1843 if (group == null) { 1844 final int resource = mApplication.getApplicationInfo().labelRes; 1845 group = new KeyboardShortcutGroup(resource != 0 ? getString(resource) : null); 1846 } 1847 group.addItem(new KeyboardShortcutInfo( 1848 title, alphaShortcut, alphaModifiers)); 1849 } 1850 } 1851 if (group != null) { 1852 data.add(group); 1853 } 1854 } 1855 1856 /** 1857 * Ask to have the current assistant shown to the user. This only works if the calling 1858 * activity is the current foreground activity. It is the same as calling 1859 * {@link android.service.voice.VoiceInteractionService#showSession 1860 * VoiceInteractionService.showSession} and requesting all of the possible context. 1861 * The receiver will always see 1862 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1863 * @return Returns true if the assistant was successfully invoked, else false. For example 1864 * false will be returned if the caller is not the current top activity. 1865 */ 1866 public boolean showAssist(Bundle args) { 1867 try { 1868 return ActivityManager.getService().showAssistFromActivity(mToken, args); 1869 } catch (RemoteException e) { 1870 } 1871 return false; 1872 } 1873 1874 /** 1875 * Called when you are no longer visible to the user. You will next 1876 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1877 * depending on later user activity. 1878 * 1879 * <p><em>Derived classes must call through to the super class's 1880 * implementation of this method. If they do not, an exception will be 1881 * thrown.</em></p> 1882 * 1883 * @see #onRestart 1884 * @see #onResume 1885 * @see #onSaveInstanceState 1886 * @see #onDestroy 1887 */ 1888 @CallSuper 1889 protected void onStop() { 1890 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1891 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1892 mActivityTransitionState.onStop(); 1893 getApplication().dispatchActivityStopped(this); 1894 mTranslucentCallback = null; 1895 mCalled = true; 1896 1897 if (mAutoFillResetNeeded) { 1898 getAutofillManager().onInvisibleForAutofill(); 1899 } 1900 1901 if (isFinishing()) { 1902 if (mAutoFillResetNeeded) { 1903 getAutofillManager().onActivityFinishing(); 1904 } else if (mIntent != null 1905 && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 1906 // Activity was launched when user tapped a link in the Autofill Save UI - since 1907 // user launched another activity, the Save UI should not be restored when this 1908 // activity is finished. 1909 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_CANCEL, 1910 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 1911 } 1912 } 1913 } 1914 1915 /** 1916 * Perform any final cleanup before an activity is destroyed. This can 1917 * happen either because the activity is finishing (someone called 1918 * {@link #finish} on it, or because the system is temporarily destroying 1919 * this instance of the activity to save space. You can distinguish 1920 * between these two scenarios with the {@link #isFinishing} method. 1921 * 1922 * <p><em>Note: do not count on this method being called as a place for 1923 * saving data! For example, if an activity is editing data in a content 1924 * provider, those edits should be committed in either {@link #onPause} or 1925 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1926 * free resources like threads that are associated with an activity, so 1927 * that a destroyed activity does not leave such things around while the 1928 * rest of its application is still running. There are situations where 1929 * the system will simply kill the activity's hosting process without 1930 * calling this method (or any others) in it, so it should not be used to 1931 * do things that are intended to remain around after the process goes 1932 * away. 1933 * 1934 * <p><em>Derived classes must call through to the super class's 1935 * implementation of this method. If they do not, an exception will be 1936 * thrown.</em></p> 1937 * 1938 * @see #onPause 1939 * @see #onStop 1940 * @see #finish 1941 * @see #isFinishing 1942 */ 1943 @CallSuper 1944 protected void onDestroy() { 1945 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1946 mCalled = true; 1947 1948 // dismiss any dialogs we are managing. 1949 if (mManagedDialogs != null) { 1950 final int numDialogs = mManagedDialogs.size(); 1951 for (int i = 0; i < numDialogs; i++) { 1952 final ManagedDialog md = mManagedDialogs.valueAt(i); 1953 if (md.mDialog.isShowing()) { 1954 md.mDialog.dismiss(); 1955 } 1956 } 1957 mManagedDialogs = null; 1958 } 1959 1960 // close any cursors we are managing. 1961 synchronized (mManagedCursors) { 1962 int numCursors = mManagedCursors.size(); 1963 for (int i = 0; i < numCursors; i++) { 1964 ManagedCursor c = mManagedCursors.get(i); 1965 if (c != null) { 1966 c.mCursor.close(); 1967 } 1968 } 1969 mManagedCursors.clear(); 1970 } 1971 1972 // Close any open search dialog 1973 if (mSearchManager != null) { 1974 mSearchManager.stopSearch(); 1975 } 1976 1977 if (mActionBar != null) { 1978 mActionBar.onDestroy(); 1979 } 1980 1981 getApplication().dispatchActivityDestroyed(this); 1982 } 1983 1984 /** 1985 * Report to the system that your app is now fully drawn, purely for diagnostic 1986 * purposes (calling it does not impact the visible behavior of the activity). 1987 * This is only used to help instrument application launch times, so that the 1988 * app can report when it is fully in a usable state; without this, the only thing 1989 * the system itself can determine is the point at which the activity's window 1990 * is <em>first</em> drawn and displayed. To participate in app launch time 1991 * measurement, you should always call this method after first launch (when 1992 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1993 * entirely drawn your UI and populated with all of the significant data. You 1994 * can safely call this method any time after first launch as well, in which case 1995 * it will simply be ignored. 1996 */ 1997 public void reportFullyDrawn() { 1998 if (mDoReportFullyDrawn) { 1999 mDoReportFullyDrawn = false; 2000 try { 2001 ActivityManager.getService().reportActivityFullyDrawn(mToken, mRestoredFromBundle); 2002 } catch (RemoteException e) { 2003 } 2004 } 2005 } 2006 2007 /** 2008 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 2009 * visa-versa. This method provides the same configuration that will be sent in the following 2010 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 2011 * 2012 * @see android.R.attr#resizeableActivity 2013 * 2014 * @param isInMultiWindowMode True if the activity is in multi-window mode. 2015 * @param newConfig The new configuration of the activity with the state 2016 * {@param isInMultiWindowMode}. 2017 */ 2018 public void onMultiWindowModeChanged(boolean isInMultiWindowMode, Configuration newConfig) { 2019 // Left deliberately empty. There should be no side effects if a direct 2020 // subclass of Activity does not call super. 2021 onMultiWindowModeChanged(isInMultiWindowMode); 2022 } 2023 2024 /** 2025 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 2026 * visa-versa. 2027 * 2028 * @see android.R.attr#resizeableActivity 2029 * 2030 * @param isInMultiWindowMode True if the activity is in multi-window mode. 2031 * 2032 * @deprecated Use {@link #onMultiWindowModeChanged(boolean, Configuration)} instead. 2033 */ 2034 @Deprecated 2035 public void onMultiWindowModeChanged(boolean isInMultiWindowMode) { 2036 // Left deliberately empty. There should be no side effects if a direct 2037 // subclass of Activity does not call super. 2038 } 2039 2040 /** 2041 * Returns true if the activity is currently in multi-window mode. 2042 * @see android.R.attr#resizeableActivity 2043 * 2044 * @return True if the activity is in multi-window mode. 2045 */ 2046 public boolean isInMultiWindowMode() { 2047 try { 2048 return ActivityManager.getService().isInMultiWindowMode(mToken); 2049 } catch (RemoteException e) { 2050 } 2051 return false; 2052 } 2053 2054 /** 2055 * Called by the system when the activity changes to and from picture-in-picture mode. This 2056 * method provides the same configuration that will be sent in the following 2057 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 2058 * 2059 * @see android.R.attr#supportsPictureInPicture 2060 * 2061 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2062 * @param newConfig The new configuration of the activity with the state 2063 * {@param isInPictureInPictureMode}. 2064 */ 2065 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode, 2066 Configuration newConfig) { 2067 // Left deliberately empty. There should be no side effects if a direct 2068 // subclass of Activity does not call super. 2069 onPictureInPictureModeChanged(isInPictureInPictureMode); 2070 } 2071 2072 /** 2073 * Called by the system when the activity changes to and from picture-in-picture mode. 2074 * 2075 * @see android.R.attr#supportsPictureInPicture 2076 * 2077 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2078 * 2079 * @deprecated Use {@link #onPictureInPictureModeChanged(boolean, Configuration)} instead. 2080 */ 2081 @Deprecated 2082 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 2083 // Left deliberately empty. There should be no side effects if a direct 2084 // subclass of Activity does not call super. 2085 } 2086 2087 /** 2088 * Returns true if the activity is currently in picture-in-picture mode. 2089 * @see android.R.attr#supportsPictureInPicture 2090 * 2091 * @return True if the activity is in picture-in-picture mode. 2092 */ 2093 public boolean isInPictureInPictureMode() { 2094 try { 2095 return ActivityManager.getService().isInPictureInPictureMode(mToken); 2096 } catch (RemoteException e) { 2097 } 2098 return false; 2099 } 2100 2101 /** 2102 * Puts the activity in picture-in-picture mode if possible in the current system state. Any 2103 * prior calls to {@link #setPictureInPictureParams(PictureInPictureParams)} will still apply 2104 * when entering picture-in-picture through this call. 2105 * 2106 * @see #enterPictureInPictureMode(PictureInPictureParams) 2107 * @see android.R.attr#supportsPictureInPicture 2108 */ 2109 @Deprecated 2110 public void enterPictureInPictureMode() { 2111 enterPictureInPictureMode(new PictureInPictureParams.Builder().build()); 2112 } 2113 2114 /** @removed */ 2115 @Deprecated 2116 public boolean enterPictureInPictureMode(@NonNull PictureInPictureArgs args) { 2117 return enterPictureInPictureMode(PictureInPictureArgs.convert(args)); 2118 } 2119 2120 /** 2121 * Puts the activity in picture-in-picture mode if possible in the current system state. The 2122 * set parameters in {@param params} will be combined with the parameters from prior calls to 2123 * {@link #setPictureInPictureParams(PictureInPictureParams)}. 2124 * 2125 * The system may disallow entering picture-in-picture in various cases, including when the 2126 * activity is not visible, if the screen is locked or if the user has an activity pinned. 2127 * 2128 * @see android.R.attr#supportsPictureInPicture 2129 * @see PictureInPictureParams 2130 * 2131 * @param params non-null parameters to be combined with previously set parameters when entering 2132 * picture-in-picture. 2133 * 2134 * @return true if the system successfully put this activity into picture-in-picture mode or was 2135 * already in picture-in-picture mode (@see {@link #isInPictureInPictureMode()). If the device 2136 * does not support picture-in-picture, return false. 2137 */ 2138 public boolean enterPictureInPictureMode(@NonNull PictureInPictureParams params) { 2139 try { 2140 if (!deviceSupportsPictureInPictureMode()) { 2141 return false; 2142 } 2143 if (params == null) { 2144 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2145 } 2146 if (!mCanEnterPictureInPicture) { 2147 throw new IllegalStateException("Activity must be resumed to enter" 2148 + " picture-in-picture"); 2149 } 2150 return ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken, params); 2151 } catch (RemoteException e) { 2152 return false; 2153 } 2154 } 2155 2156 /** @removed */ 2157 @Deprecated 2158 public void setPictureInPictureArgs(@NonNull PictureInPictureArgs args) { 2159 setPictureInPictureParams(PictureInPictureArgs.convert(args)); 2160 } 2161 2162 /** 2163 * Updates the properties of the picture-in-picture activity, or sets it to be used later when 2164 * {@link #enterPictureInPictureMode()} is called. 2165 * 2166 * @param params the new parameters for the picture-in-picture. 2167 */ 2168 public void setPictureInPictureParams(@NonNull PictureInPictureParams params) { 2169 try { 2170 if (!deviceSupportsPictureInPictureMode()) { 2171 return; 2172 } 2173 if (params == null) { 2174 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2175 } 2176 ActivityManagerNative.getDefault().setPictureInPictureParams(mToken, params); 2177 } catch (RemoteException e) { 2178 } 2179 } 2180 2181 /** 2182 * Return the number of actions that will be displayed in the picture-in-picture UI when the 2183 * user interacts with the activity currently in picture-in-picture mode. This number may change 2184 * if the global configuration changes (ie. if the device is plugged into an external display), 2185 * but will always be larger than three. 2186 */ 2187 public int getMaxNumPictureInPictureActions() { 2188 try { 2189 return ActivityManagerNative.getDefault().getMaxNumPictureInPictureActions(mToken); 2190 } catch (RemoteException e) { 2191 return 0; 2192 } 2193 } 2194 2195 /** 2196 * @return Whether this device supports picture-in-picture. 2197 */ 2198 private boolean deviceSupportsPictureInPictureMode() { 2199 return getPackageManager().hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE); 2200 } 2201 2202 void dispatchMovedToDisplay(int displayId, Configuration config) { 2203 updateDisplay(displayId); 2204 onMovedToDisplay(displayId, config); 2205 } 2206 2207 /** 2208 * Called by the system when the activity is moved from one display to another without 2209 * recreation. This means that this activity is declared to handle all changes to configuration 2210 * that happened when it was switched to another display, so it wasn't destroyed and created 2211 * again. 2212 * 2213 * <p>This call will be followed by {@link #onConfigurationChanged(Configuration)} if the 2214 * applied configuration actually changed. It is up to app developer to choose whether to handle 2215 * the change in this method or in the following {@link #onConfigurationChanged(Configuration)} 2216 * call. 2217 * 2218 * <p>Use this callback to track changes to the displays if some activity functionality relies 2219 * on an association with some display properties. 2220 * 2221 * @param displayId The id of the display to which activity was moved. 2222 * @param config Configuration of the activity resources on new display after move. 2223 * 2224 * @see #onConfigurationChanged(Configuration) 2225 * @see View#onMovedToDisplay(int, Configuration) 2226 * @hide 2227 */ 2228 public void onMovedToDisplay(int displayId, Configuration config) { 2229 } 2230 2231 /** 2232 * Called by the system when the device configuration changes while your 2233 * activity is running. Note that this will <em>only</em> be called if 2234 * you have selected configurations you would like to handle with the 2235 * {@link android.R.attr#configChanges} attribute in your manifest. If 2236 * any configuration change occurs that is not selected to be reported 2237 * by that attribute, then instead of reporting it the system will stop 2238 * and restart the activity (to have it launched with the new 2239 * configuration). 2240 * 2241 * <p>At the time that this function has been called, your Resources 2242 * object will have been updated to return resource values matching the 2243 * new configuration. 2244 * 2245 * @param newConfig The new device configuration. 2246 */ 2247 public void onConfigurationChanged(Configuration newConfig) { 2248 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 2249 mCalled = true; 2250 2251 mFragments.dispatchConfigurationChanged(newConfig); 2252 2253 if (mWindow != null) { 2254 // Pass the configuration changed event to the window 2255 mWindow.onConfigurationChanged(newConfig); 2256 } 2257 2258 if (mActionBar != null) { 2259 // Do this last; the action bar will need to access 2260 // view changes from above. 2261 mActionBar.onConfigurationChanged(newConfig); 2262 } 2263 } 2264 2265 /** 2266 * If this activity is being destroyed because it can not handle a 2267 * configuration parameter being changed (and thus its 2268 * {@link #onConfigurationChanged(Configuration)} method is 2269 * <em>not</em> being called), then you can use this method to discover 2270 * the set of changes that have occurred while in the process of being 2271 * destroyed. Note that there is no guarantee that these will be 2272 * accurate (other changes could have happened at any time), so you should 2273 * only use this as an optimization hint. 2274 * 2275 * @return Returns a bit field of the configuration parameters that are 2276 * changing, as defined by the {@link android.content.res.Configuration} 2277 * class. 2278 */ 2279 public int getChangingConfigurations() { 2280 return mConfigChangeFlags; 2281 } 2282 2283 /** 2284 * Retrieve the non-configuration instance data that was previously 2285 * returned by {@link #onRetainNonConfigurationInstance()}. This will 2286 * be available from the initial {@link #onCreate} and 2287 * {@link #onStart} calls to the new instance, allowing you to extract 2288 * any useful dynamic state from the previous instance. 2289 * 2290 * <p>Note that the data you retrieve here should <em>only</em> be used 2291 * as an optimization for handling configuration changes. You should always 2292 * be able to handle getting a null pointer back, and an activity must 2293 * still be able to restore itself to its previous state (through the 2294 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2295 * function returns null. 2296 * 2297 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2298 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2299 * available on older platforms through the Android support libraries. 2300 * 2301 * @return the object previously returned by {@link #onRetainNonConfigurationInstance()} 2302 */ 2303 @Nullable 2304 public Object getLastNonConfigurationInstance() { 2305 return mLastNonConfigurationInstances != null 2306 ? mLastNonConfigurationInstances.activity : null; 2307 } 2308 2309 /** 2310 * Called by the system, as part of destroying an 2311 * activity due to a configuration change, when it is known that a new 2312 * instance will immediately be created for the new configuration. You 2313 * can return any object you like here, including the activity instance 2314 * itself, which can later be retrieved by calling 2315 * {@link #getLastNonConfigurationInstance()} in the new activity 2316 * instance. 2317 * 2318 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2319 * or later, consider instead using a {@link Fragment} with 2320 * {@link Fragment#setRetainInstance(boolean) 2321 * Fragment.setRetainInstance(boolean}.</em> 2322 * 2323 * <p>This function is called purely as an optimization, and you must 2324 * not rely on it being called. When it is called, a number of guarantees 2325 * will be made to help optimize configuration switching: 2326 * <ul> 2327 * <li> The function will be called between {@link #onStop} and 2328 * {@link #onDestroy}. 2329 * <li> A new instance of the activity will <em>always</em> be immediately 2330 * created after this one's {@link #onDestroy()} is called. In particular, 2331 * <em>no</em> messages will be dispatched during this time (when the returned 2332 * object does not have an activity to be associated with). 2333 * <li> The object you return here will <em>always</em> be available from 2334 * the {@link #getLastNonConfigurationInstance()} method of the following 2335 * activity instance as described there. 2336 * </ul> 2337 * 2338 * <p>These guarantees are designed so that an activity can use this API 2339 * to propagate extensive state from the old to new activity instance, from 2340 * loaded bitmaps, to network connections, to evenly actively running 2341 * threads. Note that you should <em>not</em> propagate any data that 2342 * may change based on the configuration, including any data loaded from 2343 * resources such as strings, layouts, or drawables. 2344 * 2345 * <p>The guarantee of no message handling during the switch to the next 2346 * activity simplifies use with active objects. For example if your retained 2347 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2348 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2349 * not be called from the call here until you execute the next instance's 2350 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2351 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2352 * running in a separate thread.) 2353 * 2354 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2355 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2356 * available on older platforms through the Android support libraries. 2357 * 2358 * @return any Object holding the desired state to propagate to the 2359 * next activity instance 2360 */ 2361 public Object onRetainNonConfigurationInstance() { 2362 return null; 2363 } 2364 2365 /** 2366 * Retrieve the non-configuration instance data that was previously 2367 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2368 * be available from the initial {@link #onCreate} and 2369 * {@link #onStart} calls to the new instance, allowing you to extract 2370 * any useful dynamic state from the previous instance. 2371 * 2372 * <p>Note that the data you retrieve here should <em>only</em> be used 2373 * as an optimization for handling configuration changes. You should always 2374 * be able to handle getting a null pointer back, and an activity must 2375 * still be able to restore itself to its previous state (through the 2376 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2377 * function returns null. 2378 * 2379 * @return Returns the object previously returned by 2380 * {@link #onRetainNonConfigurationChildInstances()} 2381 */ 2382 @Nullable 2383 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2384 return mLastNonConfigurationInstances != null 2385 ? mLastNonConfigurationInstances.children : null; 2386 } 2387 2388 /** 2389 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2390 * it should return either a mapping from child activity id strings to arbitrary objects, 2391 * or null. This method is intended to be used by Activity framework subclasses that control a 2392 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2393 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2394 */ 2395 @Nullable 2396 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2397 return null; 2398 } 2399 2400 NonConfigurationInstances retainNonConfigurationInstances() { 2401 Object activity = onRetainNonConfigurationInstance(); 2402 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2403 FragmentManagerNonConfig fragments = mFragments.retainNestedNonConfig(); 2404 2405 // We're already stopped but we've been asked to retain. 2406 // Our fragments are taken care of but we need to mark the loaders for retention. 2407 // In order to do this correctly we need to restart the loaders first before 2408 // handing them off to the next activity. 2409 mFragments.doLoaderStart(); 2410 mFragments.doLoaderStop(true); 2411 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2412 2413 if (activity == null && children == null && fragments == null && loaders == null 2414 && mVoiceInteractor == null) { 2415 return null; 2416 } 2417 2418 NonConfigurationInstances nci = new NonConfigurationInstances(); 2419 nci.activity = activity; 2420 nci.children = children; 2421 nci.fragments = fragments; 2422 nci.loaders = loaders; 2423 if (mVoiceInteractor != null) { 2424 mVoiceInteractor.retainInstance(); 2425 nci.voiceInteractor = mVoiceInteractor; 2426 } 2427 return nci; 2428 } 2429 2430 public void onLowMemory() { 2431 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2432 mCalled = true; 2433 mFragments.dispatchLowMemory(); 2434 } 2435 2436 public void onTrimMemory(int level) { 2437 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2438 mCalled = true; 2439 mFragments.dispatchTrimMemory(level); 2440 } 2441 2442 /** 2443 * Return the FragmentManager for interacting with fragments associated 2444 * with this activity. 2445 * 2446 * @deprecated Use {@link android.support.v4.app.FragmentActivity#getSupportFragmentManager()} 2447 */ 2448 @Deprecated 2449 public FragmentManager getFragmentManager() { 2450 return mFragments.getFragmentManager(); 2451 } 2452 2453 /** 2454 * Called when a Fragment is being attached to this activity, immediately 2455 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2456 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2457 * 2458 * @deprecated Use {@link 2459 * android.support.v4.app.FragmentActivity#onAttachFragment(android.support.v4.app.Fragment)} 2460 */ 2461 @Deprecated 2462 public void onAttachFragment(Fragment fragment) { 2463 } 2464 2465 /** 2466 * Wrapper around 2467 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2468 * that gives the resulting {@link Cursor} to call 2469 * {@link #startManagingCursor} so that the activity will manage its 2470 * lifecycle for you. 2471 * 2472 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2473 * or later, consider instead using {@link LoaderManager} instead, available 2474 * via {@link #getLoaderManager()}.</em> 2475 * 2476 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2477 * this method, because the activity will do that for you at the appropriate time. However, if 2478 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2479 * not</em> automatically close the cursor and, in that case, you must call 2480 * {@link Cursor#close()}.</p> 2481 * 2482 * @param uri The URI of the content provider to query. 2483 * @param projection List of columns to return. 2484 * @param selection SQL WHERE clause. 2485 * @param sortOrder SQL ORDER BY clause. 2486 * 2487 * @return The Cursor that was returned by query(). 2488 * 2489 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2490 * @see #startManagingCursor 2491 * @hide 2492 * 2493 * @deprecated Use {@link CursorLoader} instead. 2494 */ 2495 @Deprecated 2496 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2497 String sortOrder) { 2498 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2499 if (c != null) { 2500 startManagingCursor(c); 2501 } 2502 return c; 2503 } 2504 2505 /** 2506 * Wrapper around 2507 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2508 * that gives the resulting {@link Cursor} to call 2509 * {@link #startManagingCursor} so that the activity will manage its 2510 * lifecycle for you. 2511 * 2512 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2513 * or later, consider instead using {@link LoaderManager} instead, available 2514 * via {@link #getLoaderManager()}.</em> 2515 * 2516 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2517 * this method, because the activity will do that for you at the appropriate time. However, if 2518 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2519 * not</em> automatically close the cursor and, in that case, you must call 2520 * {@link Cursor#close()}.</p> 2521 * 2522 * @param uri The URI of the content provider to query. 2523 * @param projection List of columns to return. 2524 * @param selection SQL WHERE clause. 2525 * @param selectionArgs The arguments to selection, if any ?s are pesent 2526 * @param sortOrder SQL ORDER BY clause. 2527 * 2528 * @return The Cursor that was returned by query(). 2529 * 2530 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2531 * @see #startManagingCursor 2532 * 2533 * @deprecated Use {@link CursorLoader} instead. 2534 */ 2535 @Deprecated 2536 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2537 String[] selectionArgs, String sortOrder) { 2538 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2539 if (c != null) { 2540 startManagingCursor(c); 2541 } 2542 return c; 2543 } 2544 2545 /** 2546 * This method allows the activity to take care of managing the given 2547 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2548 * That is, when the activity is stopped it will automatically call 2549 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2550 * it will call {@link Cursor#requery} for you. When the activity is 2551 * destroyed, all managed Cursors will be closed automatically. 2552 * 2553 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2554 * or later, consider instead using {@link LoaderManager} instead, available 2555 * via {@link #getLoaderManager()}.</em> 2556 * 2557 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2558 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2559 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2560 * <em>will not</em> automatically close the cursor and, in that case, you must call 2561 * {@link Cursor#close()}.</p> 2562 * 2563 * @param c The Cursor to be managed. 2564 * 2565 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2566 * @see #stopManagingCursor 2567 * 2568 * @deprecated Use the new {@link android.content.CursorLoader} class with 2569 * {@link LoaderManager} instead; this is also 2570 * available on older platforms through the Android compatibility package. 2571 */ 2572 @Deprecated 2573 public void startManagingCursor(Cursor c) { 2574 synchronized (mManagedCursors) { 2575 mManagedCursors.add(new ManagedCursor(c)); 2576 } 2577 } 2578 2579 /** 2580 * Given a Cursor that was previously given to 2581 * {@link #startManagingCursor}, stop the activity's management of that 2582 * cursor. 2583 * 2584 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2585 * the system <em>will not</em> automatically close the cursor and you must call 2586 * {@link Cursor#close()}.</p> 2587 * 2588 * @param c The Cursor that was being managed. 2589 * 2590 * @see #startManagingCursor 2591 * 2592 * @deprecated Use the new {@link android.content.CursorLoader} class with 2593 * {@link LoaderManager} instead; this is also 2594 * available on older platforms through the Android compatibility package. 2595 */ 2596 @Deprecated 2597 public void stopManagingCursor(Cursor c) { 2598 synchronized (mManagedCursors) { 2599 final int N = mManagedCursors.size(); 2600 for (int i=0; i<N; i++) { 2601 ManagedCursor mc = mManagedCursors.get(i); 2602 if (mc.mCursor == c) { 2603 mManagedCursors.remove(i); 2604 break; 2605 } 2606 } 2607 } 2608 } 2609 2610 /** 2611 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2612 * this is a no-op. 2613 * @hide 2614 */ 2615 @Deprecated 2616 public void setPersistent(boolean isPersistent) { 2617 } 2618 2619 /** 2620 * Finds a view that was identified by the {@code android:id} XML attribute 2621 * that was processed in {@link #onCreate}. 2622 * <p> 2623 * <strong>Note:</strong> In most cases -- depending on compiler support -- 2624 * the resulting view is automatically cast to the target class type. If 2625 * the target class type is unconstrained, an explicit cast may be 2626 * necessary. 2627 * 2628 * @param id the ID to search for 2629 * @return a view with given ID if found, or {@code null} otherwise 2630 * @see View#findViewById(int) 2631 * @see Activity#requireViewById(int) 2632 */ 2633 @Nullable 2634 public <T extends View> T findViewById(@IdRes int id) { 2635 return getWindow().findViewById(id); 2636 } 2637 2638 /** 2639 * Finds a view that was identified by the {@code android:id} XML attribute that was processed 2640 * in {@link #onCreate}, or throws an IllegalArgumentException if the ID is invalid, or there is 2641 * no matching view in the hierarchy. 2642 * <p> 2643 * <strong>Note:</strong> In most cases -- depending on compiler support -- 2644 * the resulting view is automatically cast to the target class type. If 2645 * the target class type is unconstrained, an explicit cast may be 2646 * necessary. 2647 * 2648 * @param id the ID to search for 2649 * @return a view with given ID 2650 * @see View#requireViewById(int) 2651 * @see Activity#findViewById(int) 2652 */ 2653 @NonNull 2654 public final <T extends View> T requireViewById(@IdRes int id) { 2655 T view = findViewById(id); 2656 if (view == null) { 2657 throw new IllegalArgumentException("ID does not reference a View inside this Activity"); 2658 } 2659 return view; 2660 } 2661 2662 /** 2663 * Retrieve a reference to this activity's ActionBar. 2664 * 2665 * @return The Activity's ActionBar, or null if it does not have one. 2666 */ 2667 @Nullable 2668 public ActionBar getActionBar() { 2669 initWindowDecorActionBar(); 2670 return mActionBar; 2671 } 2672 2673 /** 2674 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2675 * Activity window. 2676 * 2677 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2678 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2679 * a traditional window decor action bar. The toolbar's menu will be populated with the 2680 * Activity's options menu and the navigation button will be wired through the standard 2681 * {@link android.R.id#home home} menu select action.</p> 2682 * 2683 * <p>In order to use a Toolbar within the Activity's window content the application 2684 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2685 * 2686 * @param toolbar Toolbar to set as the Activity's action bar, or {@code null} to clear it 2687 */ 2688 public void setActionBar(@Nullable Toolbar toolbar) { 2689 final ActionBar ab = getActionBar(); 2690 if (ab instanceof WindowDecorActionBar) { 2691 throw new IllegalStateException("This Activity already has an action bar supplied " + 2692 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2693 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2694 } 2695 2696 // If we reach here then we're setting a new action bar 2697 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2698 mMenuInflater = null; 2699 2700 // If we have an action bar currently, destroy it 2701 if (ab != null) { 2702 ab.onDestroy(); 2703 } 2704 2705 if (toolbar != null) { 2706 final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2707 mActionBar = tbab; 2708 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2709 } else { 2710 mActionBar = null; 2711 // Re-set the original window callback since we may have already set a Toolbar wrapper 2712 mWindow.setCallback(this); 2713 } 2714 2715 invalidateOptionsMenu(); 2716 } 2717 2718 /** 2719 * Creates a new ActionBar, locates the inflated ActionBarView, 2720 * initializes the ActionBar with the view, and sets mActionBar. 2721 */ 2722 private void initWindowDecorActionBar() { 2723 Window window = getWindow(); 2724 2725 // Initializing the window decor can change window feature flags. 2726 // Make sure that we have the correct set before performing the test below. 2727 window.getDecorView(); 2728 2729 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2730 return; 2731 } 2732 2733 mActionBar = new WindowDecorActionBar(this); 2734 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2735 2736 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2737 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2738 } 2739 2740 /** 2741 * Set the activity content from a layout resource. The resource will be 2742 * inflated, adding all top-level views to the activity. 2743 * 2744 * @param layoutResID Resource ID to be inflated. 2745 * 2746 * @see #setContentView(android.view.View) 2747 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2748 */ 2749 public void setContentView(@LayoutRes int layoutResID) { 2750 getWindow().setContentView(layoutResID); 2751 initWindowDecorActionBar(); 2752 } 2753 2754 /** 2755 * Set the activity content to an explicit view. This view is placed 2756 * directly into the activity's view hierarchy. It can itself be a complex 2757 * view hierarchy. When calling this method, the layout parameters of the 2758 * specified view are ignored. Both the width and the height of the view are 2759 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2760 * your own layout parameters, invoke 2761 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2762 * instead. 2763 * 2764 * @param view The desired content to display. 2765 * 2766 * @see #setContentView(int) 2767 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2768 */ 2769 public void setContentView(View view) { 2770 getWindow().setContentView(view); 2771 initWindowDecorActionBar(); 2772 } 2773 2774 /** 2775 * Set the activity content to an explicit view. This view is placed 2776 * directly into the activity's view hierarchy. It can itself be a complex 2777 * view hierarchy. 2778 * 2779 * @param view The desired content to display. 2780 * @param params Layout parameters for the view. 2781 * 2782 * @see #setContentView(android.view.View) 2783 * @see #setContentView(int) 2784 */ 2785 public void setContentView(View view, ViewGroup.LayoutParams params) { 2786 getWindow().setContentView(view, params); 2787 initWindowDecorActionBar(); 2788 } 2789 2790 /** 2791 * Add an additional content view to the activity. Added after any existing 2792 * ones in the activity -- existing views are NOT removed. 2793 * 2794 * @param view The desired content to display. 2795 * @param params Layout parameters for the view. 2796 */ 2797 public void addContentView(View view, ViewGroup.LayoutParams params) { 2798 getWindow().addContentView(view, params); 2799 initWindowDecorActionBar(); 2800 } 2801 2802 /** 2803 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2804 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2805 * 2806 * <p>This method will return non-null after content has been initialized (e.g. by using 2807 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2808 * 2809 * @return This window's content TransitionManager or null if none is set. 2810 */ 2811 public TransitionManager getContentTransitionManager() { 2812 return getWindow().getTransitionManager(); 2813 } 2814 2815 /** 2816 * Set the {@link TransitionManager} to use for default transitions in this window. 2817 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2818 * 2819 * @param tm The TransitionManager to use for scene changes. 2820 */ 2821 public void setContentTransitionManager(TransitionManager tm) { 2822 getWindow().setTransitionManager(tm); 2823 } 2824 2825 /** 2826 * Retrieve the {@link Scene} representing this window's current content. 2827 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2828 * 2829 * <p>This method will return null if the current content is not represented by a Scene.</p> 2830 * 2831 * @return Current Scene being shown or null 2832 */ 2833 public Scene getContentScene() { 2834 return getWindow().getContentScene(); 2835 } 2836 2837 /** 2838 * Sets whether this activity is finished when touched outside its window's 2839 * bounds. 2840 */ 2841 public void setFinishOnTouchOutside(boolean finish) { 2842 mWindow.setCloseOnTouchOutside(finish); 2843 } 2844 2845 /** @hide */ 2846 @IntDef(prefix = { "DEFAULT_KEYS_" }, value = { 2847 DEFAULT_KEYS_DISABLE, 2848 DEFAULT_KEYS_DIALER, 2849 DEFAULT_KEYS_SHORTCUT, 2850 DEFAULT_KEYS_SEARCH_LOCAL, 2851 DEFAULT_KEYS_SEARCH_GLOBAL 2852 }) 2853 @Retention(RetentionPolicy.SOURCE) 2854 @interface DefaultKeyMode {} 2855 2856 /** 2857 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2858 * keys. 2859 * 2860 * @see #setDefaultKeyMode 2861 */ 2862 static public final int DEFAULT_KEYS_DISABLE = 0; 2863 /** 2864 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2865 * key handling. 2866 * 2867 * @see #setDefaultKeyMode 2868 */ 2869 static public final int DEFAULT_KEYS_DIALER = 1; 2870 /** 2871 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2872 * default key handling. 2873 * 2874 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2875 * 2876 * @see #setDefaultKeyMode 2877 */ 2878 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2879 /** 2880 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2881 * will start an application-defined search. (If the application or activity does not 2882 * actually define a search, the the keys will be ignored.) 2883 * 2884 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2885 * 2886 * @see #setDefaultKeyMode 2887 */ 2888 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2889 2890 /** 2891 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2892 * will start a global search (typically web search, but some platforms may define alternate 2893 * methods for global search) 2894 * 2895 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2896 * 2897 * @see #setDefaultKeyMode 2898 */ 2899 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2900 2901 /** 2902 * Select the default key handling for this activity. This controls what 2903 * will happen to key events that are not otherwise handled. The default 2904 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2905 * floor. Other modes allow you to launch the dialer 2906 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2907 * menu without requiring the menu key be held down 2908 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2909 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2910 * 2911 * <p>Note that the mode selected here does not impact the default 2912 * handling of system keys, such as the "back" and "menu" keys, and your 2913 * activity and its views always get a first chance to receive and handle 2914 * all application keys. 2915 * 2916 * @param mode The desired default key mode constant. 2917 * 2918 * @see #onKeyDown 2919 */ 2920 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2921 mDefaultKeyMode = mode; 2922 2923 // Some modes use a SpannableStringBuilder to track & dispatch input events 2924 // This list must remain in sync with the switch in onKeyDown() 2925 switch (mode) { 2926 case DEFAULT_KEYS_DISABLE: 2927 case DEFAULT_KEYS_SHORTCUT: 2928 mDefaultKeySsb = null; // not used in these modes 2929 break; 2930 case DEFAULT_KEYS_DIALER: 2931 case DEFAULT_KEYS_SEARCH_LOCAL: 2932 case DEFAULT_KEYS_SEARCH_GLOBAL: 2933 mDefaultKeySsb = new SpannableStringBuilder(); 2934 Selection.setSelection(mDefaultKeySsb,0); 2935 break; 2936 default: 2937 throw new IllegalArgumentException(); 2938 } 2939 } 2940 2941 /** 2942 * Called when a key was pressed down and not handled by any of the views 2943 * inside of the activity. So, for example, key presses while the cursor 2944 * is inside a TextView will not trigger the event (unless it is a navigation 2945 * to another object) because TextView handles its own key presses. 2946 * 2947 * <p>If the focused view didn't want this event, this method is called. 2948 * 2949 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2950 * by calling {@link #onBackPressed()}, though the behavior varies based 2951 * on the application compatibility mode: for 2952 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2953 * it will set up the dispatch to call {@link #onKeyUp} where the action 2954 * will be performed; for earlier applications, it will perform the 2955 * action immediately in on-down, as those versions of the platform 2956 * behaved. 2957 * 2958 * <p>Other additional default key handling may be performed 2959 * if configured with {@link #setDefaultKeyMode}. 2960 * 2961 * @return Return <code>true</code> to prevent this event from being propagated 2962 * further, or <code>false</code> to indicate that you have not handled 2963 * this event and it should continue to be propagated. 2964 * @see #onKeyUp 2965 * @see android.view.KeyEvent 2966 */ 2967 public boolean onKeyDown(int keyCode, KeyEvent event) { 2968 if (keyCode == KeyEvent.KEYCODE_BACK) { 2969 if (getApplicationInfo().targetSdkVersion 2970 >= Build.VERSION_CODES.ECLAIR) { 2971 event.startTracking(); 2972 } else { 2973 onBackPressed(); 2974 } 2975 return true; 2976 } 2977 2978 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2979 return false; 2980 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2981 Window w = getWindow(); 2982 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2983 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2984 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2985 return true; 2986 } 2987 return false; 2988 } else if (keyCode == KeyEvent.KEYCODE_TAB) { 2989 // Don't consume TAB here since it's used for navigation. Arrow keys 2990 // aren't considered "typing keys" so they already won't get consumed. 2991 return false; 2992 } else { 2993 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2994 boolean clearSpannable = false; 2995 boolean handled; 2996 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2997 clearSpannable = true; 2998 handled = false; 2999 } else { 3000 handled = TextKeyListener.getInstance().onKeyDown( 3001 null, mDefaultKeySsb, keyCode, event); 3002 if (handled && mDefaultKeySsb.length() > 0) { 3003 // something useable has been typed - dispatch it now. 3004 3005 final String str = mDefaultKeySsb.toString(); 3006 clearSpannable = true; 3007 3008 switch (mDefaultKeyMode) { 3009 case DEFAULT_KEYS_DIALER: 3010 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 3011 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 3012 startActivity(intent); 3013 break; 3014 case DEFAULT_KEYS_SEARCH_LOCAL: 3015 startSearch(str, false, null, false); 3016 break; 3017 case DEFAULT_KEYS_SEARCH_GLOBAL: 3018 startSearch(str, false, null, true); 3019 break; 3020 } 3021 } 3022 } 3023 if (clearSpannable) { 3024 mDefaultKeySsb.clear(); 3025 mDefaultKeySsb.clearSpans(); 3026 Selection.setSelection(mDefaultKeySsb,0); 3027 } 3028 return handled; 3029 } 3030 } 3031 3032 /** 3033 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 3034 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 3035 * the event). 3036 */ 3037 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 3038 return false; 3039 } 3040 3041 /** 3042 * Called when a key was released and not handled by any of the views 3043 * inside of the activity. So, for example, key presses while the cursor 3044 * is inside a TextView will not trigger the event (unless it is a navigation 3045 * to another object) because TextView handles its own key presses. 3046 * 3047 * <p>The default implementation handles KEYCODE_BACK to stop the activity 3048 * and go back. 3049 * 3050 * @return Return <code>true</code> to prevent this event from being propagated 3051 * further, or <code>false</code> to indicate that you have not handled 3052 * this event and it should continue to be propagated. 3053 * @see #onKeyDown 3054 * @see KeyEvent 3055 */ 3056 public boolean onKeyUp(int keyCode, KeyEvent event) { 3057 if (getApplicationInfo().targetSdkVersion 3058 >= Build.VERSION_CODES.ECLAIR) { 3059 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 3060 && !event.isCanceled()) { 3061 onBackPressed(); 3062 return true; 3063 } 3064 } 3065 return false; 3066 } 3067 3068 /** 3069 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 3070 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 3071 * the event). 3072 */ 3073 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 3074 return false; 3075 } 3076 3077 /** 3078 * Called when the activity has detected the user's press of the back 3079 * key. The default implementation simply finishes the current activity, 3080 * but you can override this to do whatever you want. 3081 */ 3082 public void onBackPressed() { 3083 if (mActionBar != null && mActionBar.collapseActionView()) { 3084 return; 3085 } 3086 3087 FragmentManager fragmentManager = mFragments.getFragmentManager(); 3088 3089 if (fragmentManager.isStateSaved() || !fragmentManager.popBackStackImmediate()) { 3090 finishAfterTransition(); 3091 } 3092 } 3093 3094 /** 3095 * Called when a key shortcut event is not handled by any of the views in the Activity. 3096 * Override this method to implement global key shortcuts for the Activity. 3097 * Key shortcuts can also be implemented by setting the 3098 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 3099 * 3100 * @param keyCode The value in event.getKeyCode(). 3101 * @param event Description of the key event. 3102 * @return True if the key shortcut was handled. 3103 */ 3104 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 3105 // Let the Action Bar have a chance at handling the shortcut. 3106 ActionBar actionBar = getActionBar(); 3107 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 3108 } 3109 3110 /** 3111 * Called when a touch screen event was not handled by any of the views 3112 * under it. This is most useful to process touch events that happen 3113 * outside of your window bounds, where there is no view to receive it. 3114 * 3115 * @param event The touch screen event being processed. 3116 * 3117 * @return Return true if you have consumed the event, false if you haven't. 3118 * The default implementation always returns false. 3119 */ 3120 public boolean onTouchEvent(MotionEvent event) { 3121 if (mWindow.shouldCloseOnTouch(this, event)) { 3122 finish(); 3123 return true; 3124 } 3125 3126 return false; 3127 } 3128 3129 /** 3130 * Called when the trackball was moved and not handled by any of the 3131 * views inside of the activity. So, for example, if the trackball moves 3132 * while focus is on a button, you will receive a call here because 3133 * buttons do not normally do anything with trackball events. The call 3134 * here happens <em>before</em> trackball movements are converted to 3135 * DPAD key events, which then get sent back to the view hierarchy, and 3136 * will be processed at the point for things like focus navigation. 3137 * 3138 * @param event The trackball event being processed. 3139 * 3140 * @return Return true if you have consumed the event, false if you haven't. 3141 * The default implementation always returns false. 3142 */ 3143 public boolean onTrackballEvent(MotionEvent event) { 3144 return false; 3145 } 3146 3147 /** 3148 * Called when a generic motion event was not handled by any of the 3149 * views inside of the activity. 3150 * <p> 3151 * Generic motion events describe joystick movements, mouse hovers, track pad 3152 * touches, scroll wheel movements and other input events. The 3153 * {@link MotionEvent#getSource() source} of the motion event specifies 3154 * the class of input that was received. Implementations of this method 3155 * must examine the bits in the source before processing the event. 3156 * The following code example shows how this is done. 3157 * </p><p> 3158 * Generic motion events with source class 3159 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 3160 * are delivered to the view under the pointer. All other generic motion events are 3161 * delivered to the focused view. 3162 * </p><p> 3163 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 3164 * handle this event. 3165 * </p> 3166 * 3167 * @param event The generic motion event being processed. 3168 * 3169 * @return Return true if you have consumed the event, false if you haven't. 3170 * The default implementation always returns false. 3171 */ 3172 public boolean onGenericMotionEvent(MotionEvent event) { 3173 return false; 3174 } 3175 3176 /** 3177 * Called whenever a key, touch, or trackball event is dispatched to the 3178 * activity. Implement this method if you wish to know that the user has 3179 * interacted with the device in some way while your activity is running. 3180 * This callback and {@link #onUserLeaveHint} are intended to help 3181 * activities manage status bar notifications intelligently; specifically, 3182 * for helping activities determine the proper time to cancel a notfication. 3183 * 3184 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 3185 * be accompanied by calls to {@link #onUserInteraction}. This 3186 * ensures that your activity will be told of relevant user activity such 3187 * as pulling down the notification pane and touching an item there. 3188 * 3189 * <p>Note that this callback will be invoked for the touch down action 3190 * that begins a touch gesture, but may not be invoked for the touch-moved 3191 * and touch-up actions that follow. 3192 * 3193 * @see #onUserLeaveHint() 3194 */ 3195 public void onUserInteraction() { 3196 } 3197 3198 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 3199 // Update window manager if: we have a view, that view is 3200 // attached to its parent (which will be a RootView), and 3201 // this activity is not embedded. 3202 if (mParent == null) { 3203 View decor = mDecor; 3204 if (decor != null && decor.getParent() != null) { 3205 getWindowManager().updateViewLayout(decor, params); 3206 } 3207 } 3208 } 3209 3210 public void onContentChanged() { 3211 } 3212 3213 /** 3214 * Called when the current {@link Window} of the activity gains or loses 3215 * focus. This is the best indicator of whether this activity is visible 3216 * to the user. The default implementation clears the key tracking 3217 * state, so should always be called. 3218 * 3219 * <p>Note that this provides information about global focus state, which 3220 * is managed independently of activity lifecycles. As such, while focus 3221 * changes will generally have some relation to lifecycle changes (an 3222 * activity that is stopped will not generally get window focus), you 3223 * should not rely on any particular order between the callbacks here and 3224 * those in the other lifecycle methods such as {@link #onResume}. 3225 * 3226 * <p>As a general rule, however, a resumed activity will have window 3227 * focus... unless it has displayed other dialogs or popups that take 3228 * input focus, in which case the activity itself will not have focus 3229 * when the other windows have it. Likewise, the system may display 3230 * system-level windows (such as the status bar notification panel or 3231 * a system alert) which will temporarily take window input focus without 3232 * pausing the foreground activity. 3233 * 3234 * @param hasFocus Whether the window of this activity has focus. 3235 * 3236 * @see #hasWindowFocus() 3237 * @see #onResume 3238 * @see View#onWindowFocusChanged(boolean) 3239 */ 3240 public void onWindowFocusChanged(boolean hasFocus) { 3241 } 3242 3243 /** 3244 * Called when the main window associated with the activity has been 3245 * attached to the window manager. 3246 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 3247 * for more information. 3248 * @see View#onAttachedToWindow 3249 */ 3250 public void onAttachedToWindow() { 3251 } 3252 3253 /** 3254 * Called when the main window associated with the activity has been 3255 * detached from the window manager. 3256 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 3257 * for more information. 3258 * @see View#onDetachedFromWindow 3259 */ 3260 public void onDetachedFromWindow() { 3261 } 3262 3263 /** 3264 * Returns true if this activity's <em>main</em> window currently has window focus. 3265 * Note that this is not the same as the view itself having focus. 3266 * 3267 * @return True if this activity's main window currently has window focus. 3268 * 3269 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 3270 */ 3271 public boolean hasWindowFocus() { 3272 Window w = getWindow(); 3273 if (w != null) { 3274 View d = w.getDecorView(); 3275 if (d != null) { 3276 return d.hasWindowFocus(); 3277 } 3278 } 3279 return false; 3280 } 3281 3282 /** 3283 * Called when the main window associated with the activity has been dismissed. 3284 * @hide 3285 */ 3286 @Override 3287 public void onWindowDismissed(boolean finishTask, boolean suppressWindowTransition) { 3288 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 3289 if (suppressWindowTransition) { 3290 overridePendingTransition(0, 0); 3291 } 3292 } 3293 3294 3295 /** 3296 * Moves the activity from {@link WindowConfiguration#WINDOWING_MODE_FREEFORM} windowing mode to 3297 * {@link WindowConfiguration#WINDOWING_MODE_FULLSCREEN}. 3298 * 3299 * @hide 3300 */ 3301 @Override 3302 public void exitFreeformMode() throws RemoteException { 3303 ActivityManager.getService().exitFreeformMode(mToken); 3304 } 3305 3306 /** 3307 * Puts the activity in picture-in-picture mode if the activity supports. 3308 * @see android.R.attr#supportsPictureInPicture 3309 * @hide 3310 */ 3311 @Override 3312 public void enterPictureInPictureModeIfPossible() { 3313 if (mActivityInfo.supportsPictureInPicture()) { 3314 enterPictureInPictureMode(); 3315 } 3316 } 3317 3318 /** 3319 * Called to process key events. You can override this to intercept all 3320 * key events before they are dispatched to the window. Be sure to call 3321 * this implementation for key events that should be handled normally. 3322 * 3323 * @param event The key event. 3324 * 3325 * @return boolean Return true if this event was consumed. 3326 */ 3327 public boolean dispatchKeyEvent(KeyEvent event) { 3328 onUserInteraction(); 3329 3330 // Let action bars open menus in response to the menu key prioritized over 3331 // the window handling it 3332 final int keyCode = event.getKeyCode(); 3333 if (keyCode == KeyEvent.KEYCODE_MENU && 3334 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 3335 return true; 3336 } 3337 3338 Window win = getWindow(); 3339 if (win.superDispatchKeyEvent(event)) { 3340 return true; 3341 } 3342 View decor = mDecor; 3343 if (decor == null) decor = win.getDecorView(); 3344 return event.dispatch(this, decor != null 3345 ? decor.getKeyDispatcherState() : null, this); 3346 } 3347 3348 /** 3349 * Called to process a key shortcut event. 3350 * You can override this to intercept all key shortcut events before they are 3351 * dispatched to the window. Be sure to call this implementation for key shortcut 3352 * events that should be handled normally. 3353 * 3354 * @param event The key shortcut event. 3355 * @return True if this event was consumed. 3356 */ 3357 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 3358 onUserInteraction(); 3359 if (getWindow().superDispatchKeyShortcutEvent(event)) { 3360 return true; 3361 } 3362 return onKeyShortcut(event.getKeyCode(), event); 3363 } 3364 3365 /** 3366 * Called to process touch screen events. You can override this to 3367 * intercept all touch screen events before they are dispatched to the 3368 * window. Be sure to call this implementation for touch screen events 3369 * that should be handled normally. 3370 * 3371 * @param ev The touch screen event. 3372 * 3373 * @return boolean Return true if this event was consumed. 3374 */ 3375 public boolean dispatchTouchEvent(MotionEvent ev) { 3376 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3377 onUserInteraction(); 3378 } 3379 if (getWindow().superDispatchTouchEvent(ev)) { 3380 return true; 3381 } 3382 return onTouchEvent(ev); 3383 } 3384 3385 /** 3386 * Called to process trackball events. You can override this to 3387 * intercept all trackball events before they are dispatched to the 3388 * window. Be sure to call this implementation for trackball events 3389 * that should be handled normally. 3390 * 3391 * @param ev The trackball event. 3392 * 3393 * @return boolean Return true if this event was consumed. 3394 */ 3395 public boolean dispatchTrackballEvent(MotionEvent ev) { 3396 onUserInteraction(); 3397 if (getWindow().superDispatchTrackballEvent(ev)) { 3398 return true; 3399 } 3400 return onTrackballEvent(ev); 3401 } 3402 3403 /** 3404 * Called to process generic motion events. You can override this to 3405 * intercept all generic motion events before they are dispatched to the 3406 * window. Be sure to call this implementation for generic motion events 3407 * that should be handled normally. 3408 * 3409 * @param ev The generic motion event. 3410 * 3411 * @return boolean Return true if this event was consumed. 3412 */ 3413 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3414 onUserInteraction(); 3415 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3416 return true; 3417 } 3418 return onGenericMotionEvent(ev); 3419 } 3420 3421 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3422 event.setClassName(getClass().getName()); 3423 event.setPackageName(getPackageName()); 3424 3425 LayoutParams params = getWindow().getAttributes(); 3426 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3427 (params.height == LayoutParams.MATCH_PARENT); 3428 event.setFullScreen(isFullScreen); 3429 3430 CharSequence title = getTitle(); 3431 if (!TextUtils.isEmpty(title)) { 3432 event.getText().add(title); 3433 } 3434 3435 return true; 3436 } 3437 3438 /** 3439 * Default implementation of 3440 * {@link android.view.Window.Callback#onCreatePanelView} 3441 * for activities. This 3442 * simply returns null so that all panel sub-windows will have the default 3443 * menu behavior. 3444 */ 3445 @Nullable 3446 public View onCreatePanelView(int featureId) { 3447 return null; 3448 } 3449 3450 /** 3451 * Default implementation of 3452 * {@link android.view.Window.Callback#onCreatePanelMenu} 3453 * for activities. This calls through to the new 3454 * {@link #onCreateOptionsMenu} method for the 3455 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3456 * so that subclasses of Activity don't need to deal with feature codes. 3457 */ 3458 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3459 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3460 boolean show = onCreateOptionsMenu(menu); 3461 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3462 return show; 3463 } 3464 return false; 3465 } 3466 3467 /** 3468 * Default implementation of 3469 * {@link android.view.Window.Callback#onPreparePanel} 3470 * for activities. This 3471 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3472 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3473 * panel, so that subclasses of 3474 * Activity don't need to deal with feature codes. 3475 */ 3476 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3477 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3478 boolean goforit = onPrepareOptionsMenu(menu); 3479 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3480 return goforit; 3481 } 3482 return true; 3483 } 3484 3485 /** 3486 * {@inheritDoc} 3487 * 3488 * @return The default implementation returns true. 3489 */ 3490 public boolean onMenuOpened(int featureId, Menu menu) { 3491 if (featureId == Window.FEATURE_ACTION_BAR) { 3492 initWindowDecorActionBar(); 3493 if (mActionBar != null) { 3494 mActionBar.dispatchMenuVisibilityChanged(true); 3495 } else { 3496 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3497 } 3498 } 3499 return true; 3500 } 3501 3502 /** 3503 * Default implementation of 3504 * {@link android.view.Window.Callback#onMenuItemSelected} 3505 * for activities. This calls through to the new 3506 * {@link #onOptionsItemSelected} method for the 3507 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3508 * panel, so that subclasses of 3509 * Activity don't need to deal with feature codes. 3510 */ 3511 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3512 CharSequence titleCondensed = item.getTitleCondensed(); 3513 3514 switch (featureId) { 3515 case Window.FEATURE_OPTIONS_PANEL: 3516 // Put event logging here so it gets called even if subclass 3517 // doesn't call through to superclass's implmeentation of each 3518 // of these methods below 3519 if(titleCondensed != null) { 3520 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3521 } 3522 if (onOptionsItemSelected(item)) { 3523 return true; 3524 } 3525 if (mFragments.dispatchOptionsItemSelected(item)) { 3526 return true; 3527 } 3528 if (item.getItemId() == android.R.id.home && mActionBar != null && 3529 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3530 if (mParent == null) { 3531 return onNavigateUp(); 3532 } else { 3533 return mParent.onNavigateUpFromChild(this); 3534 } 3535 } 3536 return false; 3537 3538 case Window.FEATURE_CONTEXT_MENU: 3539 if(titleCondensed != null) { 3540 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3541 } 3542 if (onContextItemSelected(item)) { 3543 return true; 3544 } 3545 return mFragments.dispatchContextItemSelected(item); 3546 3547 default: 3548 return false; 3549 } 3550 } 3551 3552 /** 3553 * Default implementation of 3554 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3555 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3556 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3557 * so that subclasses of Activity don't need to deal with feature codes. 3558 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3559 * {@link #onContextMenuClosed(Menu)} will be called. 3560 */ 3561 public void onPanelClosed(int featureId, Menu menu) { 3562 switch (featureId) { 3563 case Window.FEATURE_OPTIONS_PANEL: 3564 mFragments.dispatchOptionsMenuClosed(menu); 3565 onOptionsMenuClosed(menu); 3566 break; 3567 3568 case Window.FEATURE_CONTEXT_MENU: 3569 onContextMenuClosed(menu); 3570 break; 3571 3572 case Window.FEATURE_ACTION_BAR: 3573 initWindowDecorActionBar(); 3574 mActionBar.dispatchMenuVisibilityChanged(false); 3575 break; 3576 } 3577 } 3578 3579 /** 3580 * Declare that the options menu has changed, so should be recreated. 3581 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3582 * time it needs to be displayed. 3583 */ 3584 public void invalidateOptionsMenu() { 3585 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3586 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3587 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3588 } 3589 } 3590 3591 /** 3592 * Initialize the contents of the Activity's standard options menu. You 3593 * should place your menu items in to <var>menu</var>. 3594 * 3595 * <p>This is only called once, the first time the options menu is 3596 * displayed. To update the menu every time it is displayed, see 3597 * {@link #onPrepareOptionsMenu}. 3598 * 3599 * <p>The default implementation populates the menu with standard system 3600 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3601 * they will be correctly ordered with application-defined menu items. 3602 * Deriving classes should always call through to the base implementation. 3603 * 3604 * <p>You can safely hold on to <var>menu</var> (and any items created 3605 * from it), making modifications to it as desired, until the next 3606 * time onCreateOptionsMenu() is called. 3607 * 3608 * <p>When you add items to the menu, you can implement the Activity's 3609 * {@link #onOptionsItemSelected} method to handle them there. 3610 * 3611 * @param menu The options menu in which you place your items. 3612 * 3613 * @return You must return true for the menu to be displayed; 3614 * if you return false it will not be shown. 3615 * 3616 * @see #onPrepareOptionsMenu 3617 * @see #onOptionsItemSelected 3618 */ 3619 public boolean onCreateOptionsMenu(Menu menu) { 3620 if (mParent != null) { 3621 return mParent.onCreateOptionsMenu(menu); 3622 } 3623 return true; 3624 } 3625 3626 /** 3627 * Prepare the Screen's standard options menu to be displayed. This is 3628 * called right before the menu is shown, every time it is shown. You can 3629 * use this method to efficiently enable/disable items or otherwise 3630 * dynamically modify the contents. 3631 * 3632 * <p>The default implementation updates the system menu items based on the 3633 * activity's state. Deriving classes should always call through to the 3634 * base class implementation. 3635 * 3636 * @param menu The options menu as last shown or first initialized by 3637 * onCreateOptionsMenu(). 3638 * 3639 * @return You must return true for the menu to be displayed; 3640 * if you return false it will not be shown. 3641 * 3642 * @see #onCreateOptionsMenu 3643 */ 3644 public boolean onPrepareOptionsMenu(Menu menu) { 3645 if (mParent != null) { 3646 return mParent.onPrepareOptionsMenu(menu); 3647 } 3648 return true; 3649 } 3650 3651 /** 3652 * This hook is called whenever an item in your options menu is selected. 3653 * The default implementation simply returns false to have the normal 3654 * processing happen (calling the item's Runnable or sending a message to 3655 * its Handler as appropriate). You can use this method for any items 3656 * for which you would like to do processing without those other 3657 * facilities. 3658 * 3659 * <p>Derived classes should call through to the base class for it to 3660 * perform the default menu handling.</p> 3661 * 3662 * @param item The menu item that was selected. 3663 * 3664 * @return boolean Return false to allow normal menu processing to 3665 * proceed, true to consume it here. 3666 * 3667 * @see #onCreateOptionsMenu 3668 */ 3669 public boolean onOptionsItemSelected(MenuItem item) { 3670 if (mParent != null) { 3671 return mParent.onOptionsItemSelected(item); 3672 } 3673 return false; 3674 } 3675 3676 /** 3677 * This method is called whenever the user chooses to navigate Up within your application's 3678 * activity hierarchy from the action bar. 3679 * 3680 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3681 * was specified in the manifest for this activity or an activity-alias to it, 3682 * default Up navigation will be handled automatically. If any activity 3683 * along the parent chain requires extra Intent arguments, the Activity subclass 3684 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3685 * to supply those arguments.</p> 3686 * 3687 * <p>See <a href="{@docRoot}guide/components/tasks-and-back-stack.html">Tasks and Back Stack</a> 3688 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3689 * from the design guide for more information about navigating within your app.</p> 3690 * 3691 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3692 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3693 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3694 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3695 * 3696 * @return true if Up navigation completed successfully and this Activity was finished, 3697 * false otherwise. 3698 */ 3699 public boolean onNavigateUp() { 3700 // Automatically handle hierarchical Up navigation if the proper 3701 // metadata is available. 3702 Intent upIntent = getParentActivityIntent(); 3703 if (upIntent != null) { 3704 if (mActivityInfo.taskAffinity == null) { 3705 // Activities with a null affinity are special; they really shouldn't 3706 // specify a parent activity intent in the first place. Just finish 3707 // the current activity and call it a day. 3708 finish(); 3709 } else if (shouldUpRecreateTask(upIntent)) { 3710 TaskStackBuilder b = TaskStackBuilder.create(this); 3711 onCreateNavigateUpTaskStack(b); 3712 onPrepareNavigateUpTaskStack(b); 3713 b.startActivities(); 3714 3715 // We can't finishAffinity if we have a result. 3716 // Fall back and simply finish the current activity instead. 3717 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3718 // Tell the developer what's going on to avoid hair-pulling. 3719 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3720 finish(); 3721 } else { 3722 finishAffinity(); 3723 } 3724 } else { 3725 navigateUpTo(upIntent); 3726 } 3727 return true; 3728 } 3729 return false; 3730 } 3731 3732 /** 3733 * This is called when a child activity of this one attempts to navigate up. 3734 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3735 * 3736 * @param child The activity making the call. 3737 */ 3738 public boolean onNavigateUpFromChild(Activity child) { 3739 return onNavigateUp(); 3740 } 3741 3742 /** 3743 * Define the synthetic task stack that will be generated during Up navigation from 3744 * a different task. 3745 * 3746 * <p>The default implementation of this method adds the parent chain of this activity 3747 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3748 * may choose to override this method to construct the desired task stack in a different 3749 * way.</p> 3750 * 3751 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3752 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3753 * returned by {@link #getParentActivityIntent()}.</p> 3754 * 3755 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3756 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3757 * 3758 * @param builder An empty TaskStackBuilder - the application should add intents representing 3759 * the desired task stack 3760 */ 3761 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3762 builder.addParentStack(this); 3763 } 3764 3765 /** 3766 * Prepare the synthetic task stack that will be generated during Up navigation 3767 * from a different task. 3768 * 3769 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3770 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3771 * If any extra data should be added to these intents before launching the new task, 3772 * the application should override this method and add that data here.</p> 3773 * 3774 * @param builder A TaskStackBuilder that has been populated with Intents by 3775 * onCreateNavigateUpTaskStack. 3776 */ 3777 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3778 } 3779 3780 /** 3781 * This hook is called whenever the options menu is being closed (either by the user canceling 3782 * the menu with the back/menu button, or when an item is selected). 3783 * 3784 * @param menu The options menu as last shown or first initialized by 3785 * onCreateOptionsMenu(). 3786 */ 3787 public void onOptionsMenuClosed(Menu menu) { 3788 if (mParent != null) { 3789 mParent.onOptionsMenuClosed(menu); 3790 } 3791 } 3792 3793 /** 3794 * Programmatically opens the options menu. If the options menu is already 3795 * open, this method does nothing. 3796 */ 3797 public void openOptionsMenu() { 3798 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3799 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3800 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3801 } 3802 } 3803 3804 /** 3805 * Progammatically closes the options menu. If the options menu is already 3806 * closed, this method does nothing. 3807 */ 3808 public void closeOptionsMenu() { 3809 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3810 (mActionBar == null || !mActionBar.closeOptionsMenu())) { 3811 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3812 } 3813 } 3814 3815 /** 3816 * Called when a context menu for the {@code view} is about to be shown. 3817 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3818 * time the context menu is about to be shown and should be populated for 3819 * the view (or item inside the view for {@link AdapterView} subclasses, 3820 * this can be found in the {@code menuInfo})). 3821 * <p> 3822 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3823 * item has been selected. 3824 * <p> 3825 * It is not safe to hold onto the context menu after this method returns. 3826 * 3827 */ 3828 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3829 } 3830 3831 /** 3832 * Registers a context menu to be shown for the given view (multiple views 3833 * can show the context menu). This method will set the 3834 * {@link OnCreateContextMenuListener} on the view to this activity, so 3835 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3836 * called when it is time to show the context menu. 3837 * 3838 * @see #unregisterForContextMenu(View) 3839 * @param view The view that should show a context menu. 3840 */ 3841 public void registerForContextMenu(View view) { 3842 view.setOnCreateContextMenuListener(this); 3843 } 3844 3845 /** 3846 * Prevents a context menu to be shown for the given view. This method will remove the 3847 * {@link OnCreateContextMenuListener} on the view. 3848 * 3849 * @see #registerForContextMenu(View) 3850 * @param view The view that should stop showing a context menu. 3851 */ 3852 public void unregisterForContextMenu(View view) { 3853 view.setOnCreateContextMenuListener(null); 3854 } 3855 3856 /** 3857 * Programmatically opens the context menu for a particular {@code view}. 3858 * The {@code view} should have been added via 3859 * {@link #registerForContextMenu(View)}. 3860 * 3861 * @param view The view to show the context menu for. 3862 */ 3863 public void openContextMenu(View view) { 3864 view.showContextMenu(); 3865 } 3866 3867 /** 3868 * Programmatically closes the most recently opened context menu, if showing. 3869 */ 3870 public void closeContextMenu() { 3871 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3872 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3873 } 3874 } 3875 3876 /** 3877 * This hook is called whenever an item in a context menu is selected. The 3878 * default implementation simply returns false to have the normal processing 3879 * happen (calling the item's Runnable or sending a message to its Handler 3880 * as appropriate). You can use this method for any items for which you 3881 * would like to do processing without those other facilities. 3882 * <p> 3883 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3884 * View that added this menu item. 3885 * <p> 3886 * Derived classes should call through to the base class for it to perform 3887 * the default menu handling. 3888 * 3889 * @param item The context menu item that was selected. 3890 * @return boolean Return false to allow normal context menu processing to 3891 * proceed, true to consume it here. 3892 */ 3893 public boolean onContextItemSelected(MenuItem item) { 3894 if (mParent != null) { 3895 return mParent.onContextItemSelected(item); 3896 } 3897 return false; 3898 } 3899 3900 /** 3901 * This hook is called whenever the context menu is being closed (either by 3902 * the user canceling the menu with the back/menu button, or when an item is 3903 * selected). 3904 * 3905 * @param menu The context menu that is being closed. 3906 */ 3907 public void onContextMenuClosed(Menu menu) { 3908 if (mParent != null) { 3909 mParent.onContextMenuClosed(menu); 3910 } 3911 } 3912 3913 /** 3914 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3915 */ 3916 @Deprecated 3917 protected Dialog onCreateDialog(int id) { 3918 return null; 3919 } 3920 3921 /** 3922 * Callback for creating dialogs that are managed (saved and restored) for you 3923 * by the activity. The default implementation calls through to 3924 * {@link #onCreateDialog(int)} for compatibility. 3925 * 3926 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3927 * or later, consider instead using a {@link DialogFragment} instead.</em> 3928 * 3929 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3930 * this method the first time, and hang onto it thereafter. Any dialog 3931 * that is created by this method will automatically be saved and restored 3932 * for you, including whether it is showing. 3933 * 3934 * <p>If you would like the activity to manage saving and restoring dialogs 3935 * for you, you should override this method and handle any ids that are 3936 * passed to {@link #showDialog}. 3937 * 3938 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3939 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3940 * 3941 * @param id The id of the dialog. 3942 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3943 * @return The dialog. If you return null, the dialog will not be created. 3944 * 3945 * @see #onPrepareDialog(int, Dialog, Bundle) 3946 * @see #showDialog(int, Bundle) 3947 * @see #dismissDialog(int) 3948 * @see #removeDialog(int) 3949 * 3950 * @deprecated Use the new {@link DialogFragment} class with 3951 * {@link FragmentManager} instead; this is also 3952 * available on older platforms through the Android compatibility package. 3953 */ 3954 @Nullable 3955 @Deprecated 3956 protected Dialog onCreateDialog(int id, Bundle args) { 3957 return onCreateDialog(id); 3958 } 3959 3960 /** 3961 * @deprecated Old no-arguments version of 3962 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3963 */ 3964 @Deprecated 3965 protected void onPrepareDialog(int id, Dialog dialog) { 3966 dialog.setOwnerActivity(this); 3967 } 3968 3969 /** 3970 * Provides an opportunity to prepare a managed dialog before it is being 3971 * shown. The default implementation calls through to 3972 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3973 * 3974 * <p> 3975 * Override this if you need to update a managed dialog based on the state 3976 * of the application each time it is shown. For example, a time picker 3977 * dialog might want to be updated with the current time. You should call 3978 * through to the superclass's implementation. The default implementation 3979 * will set this Activity as the owner activity on the Dialog. 3980 * 3981 * @param id The id of the managed dialog. 3982 * @param dialog The dialog. 3983 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3984 * @see #onCreateDialog(int, Bundle) 3985 * @see #showDialog(int) 3986 * @see #dismissDialog(int) 3987 * @see #removeDialog(int) 3988 * 3989 * @deprecated Use the new {@link DialogFragment} class with 3990 * {@link FragmentManager} instead; this is also 3991 * available on older platforms through the Android compatibility package. 3992 */ 3993 @Deprecated 3994 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3995 onPrepareDialog(id, dialog); 3996 } 3997 3998 /** 3999 * Simple version of {@link #showDialog(int, Bundle)} that does not 4000 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 4001 * with null arguments. 4002 * 4003 * @deprecated Use the new {@link DialogFragment} class with 4004 * {@link FragmentManager} instead; this is also 4005 * available on older platforms through the Android compatibility package. 4006 */ 4007 @Deprecated 4008 public final void showDialog(int id) { 4009 showDialog(id, null); 4010 } 4011 4012 /** 4013 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 4014 * will be made with the same id the first time this is called for a given 4015 * id. From thereafter, the dialog will be automatically saved and restored. 4016 * 4017 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 4018 * or later, consider instead using a {@link DialogFragment} instead.</em> 4019 * 4020 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 4021 * be made to provide an opportunity to do any timely preparation. 4022 * 4023 * @param id The id of the managed dialog. 4024 * @param args Arguments to pass through to the dialog. These will be saved 4025 * and restored for you. Note that if the dialog is already created, 4026 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 4027 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 4028 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 4029 * @return Returns true if the Dialog was created; false is returned if 4030 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 4031 * 4032 * @see Dialog 4033 * @see #onCreateDialog(int, Bundle) 4034 * @see #onPrepareDialog(int, Dialog, Bundle) 4035 * @see #dismissDialog(int) 4036 * @see #removeDialog(int) 4037 * 4038 * @deprecated Use the new {@link DialogFragment} class with 4039 * {@link FragmentManager} instead; this is also 4040 * available on older platforms through the Android compatibility package. 4041 */ 4042 @Deprecated 4043 public final boolean showDialog(int id, Bundle args) { 4044 if (mManagedDialogs == null) { 4045 mManagedDialogs = new SparseArray<ManagedDialog>(); 4046 } 4047 ManagedDialog md = mManagedDialogs.get(id); 4048 if (md == null) { 4049 md = new ManagedDialog(); 4050 md.mDialog = createDialog(id, null, args); 4051 if (md.mDialog == null) { 4052 return false; 4053 } 4054 mManagedDialogs.put(id, md); 4055 } 4056 4057 md.mArgs = args; 4058 onPrepareDialog(id, md.mDialog, args); 4059 md.mDialog.show(); 4060 return true; 4061 } 4062 4063 /** 4064 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 4065 * 4066 * @param id The id of the managed dialog. 4067 * 4068 * @throws IllegalArgumentException if the id was not previously shown via 4069 * {@link #showDialog(int)}. 4070 * 4071 * @see #onCreateDialog(int, Bundle) 4072 * @see #onPrepareDialog(int, Dialog, Bundle) 4073 * @see #showDialog(int) 4074 * @see #removeDialog(int) 4075 * 4076 * @deprecated Use the new {@link DialogFragment} class with 4077 * {@link FragmentManager} instead; this is also 4078 * available on older platforms through the Android compatibility package. 4079 */ 4080 @Deprecated 4081 public final void dismissDialog(int id) { 4082 if (mManagedDialogs == null) { 4083 throw missingDialog(id); 4084 } 4085 4086 final ManagedDialog md = mManagedDialogs.get(id); 4087 if (md == null) { 4088 throw missingDialog(id); 4089 } 4090 md.mDialog.dismiss(); 4091 } 4092 4093 /** 4094 * Creates an exception to throw if a user passed in a dialog id that is 4095 * unexpected. 4096 */ 4097 private IllegalArgumentException missingDialog(int id) { 4098 return new IllegalArgumentException("no dialog with id " + id + " was ever " 4099 + "shown via Activity#showDialog"); 4100 } 4101 4102 /** 4103 * Removes any internal references to a dialog managed by this Activity. 4104 * If the dialog is showing, it will dismiss it as part of the clean up. 4105 * 4106 * <p>This can be useful if you know that you will never show a dialog again and 4107 * want to avoid the overhead of saving and restoring it in the future. 4108 * 4109 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 4110 * will not throw an exception if you try to remove an ID that does not 4111 * currently have an associated dialog.</p> 4112 * 4113 * @param id The id of the managed dialog. 4114 * 4115 * @see #onCreateDialog(int, Bundle) 4116 * @see #onPrepareDialog(int, Dialog, Bundle) 4117 * @see #showDialog(int) 4118 * @see #dismissDialog(int) 4119 * 4120 * @deprecated Use the new {@link DialogFragment} class with 4121 * {@link FragmentManager} instead; this is also 4122 * available on older platforms through the Android compatibility package. 4123 */ 4124 @Deprecated 4125 public final void removeDialog(int id) { 4126 if (mManagedDialogs != null) { 4127 final ManagedDialog md = mManagedDialogs.get(id); 4128 if (md != null) { 4129 md.mDialog.dismiss(); 4130 mManagedDialogs.remove(id); 4131 } 4132 } 4133 } 4134 4135 /** 4136 * This hook is called when the user signals the desire to start a search. 4137 * 4138 * <p>You can use this function as a simple way to launch the search UI, in response to a 4139 * menu item, search button, or other widgets within your activity. Unless overidden, 4140 * calling this function is the same as calling 4141 * {@link #startSearch startSearch(null, false, null, false)}, which launches 4142 * search for the current activity as specified in its manifest, see {@link SearchManager}. 4143 * 4144 * <p>You can override this function to force global search, e.g. in response to a dedicated 4145 * search key, or to block search entirely (by simply returning false). 4146 * 4147 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 4148 * implementation changes to simply return false and you must supply your own custom 4149 * implementation if you want to support search.</p> 4150 * 4151 * @param searchEvent The {@link SearchEvent} that signaled this search. 4152 * @return Returns {@code true} if search launched, and {@code false} if the activity does 4153 * not respond to search. The default implementation always returns {@code true}, except 4154 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 4155 * 4156 * @see android.app.SearchManager 4157 */ 4158 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 4159 mSearchEvent = searchEvent; 4160 boolean result = onSearchRequested(); 4161 mSearchEvent = null; 4162 return result; 4163 } 4164 4165 /** 4166 * @see #onSearchRequested(SearchEvent) 4167 */ 4168 public boolean onSearchRequested() { 4169 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 4170 != Configuration.UI_MODE_TYPE_TELEVISION) { 4171 startSearch(null, false, null, false); 4172 return true; 4173 } else { 4174 return false; 4175 } 4176 } 4177 4178 /** 4179 * During the onSearchRequested() callbacks, this function will return the 4180 * {@link SearchEvent} that triggered the callback, if it exists. 4181 * 4182 * @return SearchEvent The SearchEvent that triggered the {@link 4183 * #onSearchRequested} callback. 4184 */ 4185 public final SearchEvent getSearchEvent() { 4186 return mSearchEvent; 4187 } 4188 4189 /** 4190 * This hook is called to launch the search UI. 4191 * 4192 * <p>It is typically called from onSearchRequested(), either directly from 4193 * Activity.onSearchRequested() or from an overridden version in any given 4194 * Activity. If your goal is simply to activate search, it is preferred to call 4195 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 4196 * is to inject specific data such as context data, it is preferred to <i>override</i> 4197 * onSearchRequested(), so that any callers to it will benefit from the override. 4198 * 4199 * @param initialQuery Any non-null non-empty string will be inserted as 4200 * pre-entered text in the search query box. 4201 * @param selectInitialQuery If true, the initial query will be preselected, which means that 4202 * any further typing will replace it. This is useful for cases where an entire pre-formed 4203 * query is being inserted. If false, the selection point will be placed at the end of the 4204 * inserted query. This is useful when the inserted query is text that the user entered, 4205 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 4206 * if initialQuery is a non-empty string.</i> 4207 * @param appSearchData An application can insert application-specific 4208 * context here, in order to improve quality or specificity of its own 4209 * searches. This data will be returned with SEARCH intent(s). Null if 4210 * no extra data is required. 4211 * @param globalSearch If false, this will only launch the search that has been specifically 4212 * defined by the application (which is usually defined as a local search). If no default 4213 * search is defined in the current application or activity, global search will be launched. 4214 * If true, this will always launch a platform-global (e.g. web-based) search instead. 4215 * 4216 * @see android.app.SearchManager 4217 * @see #onSearchRequested 4218 */ 4219 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 4220 @Nullable Bundle appSearchData, boolean globalSearch) { 4221 ensureSearchManager(); 4222 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 4223 appSearchData, globalSearch); 4224 } 4225 4226 /** 4227 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 4228 * the search dialog. Made available for testing purposes. 4229 * 4230 * @param query The query to trigger. If empty, the request will be ignored. 4231 * @param appSearchData An application can insert application-specific 4232 * context here, in order to improve quality or specificity of its own 4233 * searches. This data will be returned with SEARCH intent(s). Null if 4234 * no extra data is required. 4235 */ 4236 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 4237 ensureSearchManager(); 4238 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 4239 } 4240 4241 /** 4242 * Request that key events come to this activity. Use this if your 4243 * activity has no views with focus, but the activity still wants 4244 * a chance to process key events. 4245 * 4246 * @see android.view.Window#takeKeyEvents 4247 */ 4248 public void takeKeyEvents(boolean get) { 4249 getWindow().takeKeyEvents(get); 4250 } 4251 4252 /** 4253 * Enable extended window features. This is a convenience for calling 4254 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 4255 * 4256 * @param featureId The desired feature as defined in 4257 * {@link android.view.Window}. 4258 * @return Returns true if the requested feature is supported and now 4259 * enabled. 4260 * 4261 * @see android.view.Window#requestFeature 4262 */ 4263 public final boolean requestWindowFeature(int featureId) { 4264 return getWindow().requestFeature(featureId); 4265 } 4266 4267 /** 4268 * Convenience for calling 4269 * {@link android.view.Window#setFeatureDrawableResource}. 4270 */ 4271 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 4272 getWindow().setFeatureDrawableResource(featureId, resId); 4273 } 4274 4275 /** 4276 * Convenience for calling 4277 * {@link android.view.Window#setFeatureDrawableUri}. 4278 */ 4279 public final void setFeatureDrawableUri(int featureId, Uri uri) { 4280 getWindow().setFeatureDrawableUri(featureId, uri); 4281 } 4282 4283 /** 4284 * Convenience for calling 4285 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 4286 */ 4287 public final void setFeatureDrawable(int featureId, Drawable drawable) { 4288 getWindow().setFeatureDrawable(featureId, drawable); 4289 } 4290 4291 /** 4292 * Convenience for calling 4293 * {@link android.view.Window#setFeatureDrawableAlpha}. 4294 */ 4295 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 4296 getWindow().setFeatureDrawableAlpha(featureId, alpha); 4297 } 4298 4299 /** 4300 * Convenience for calling 4301 * {@link android.view.Window#getLayoutInflater}. 4302 */ 4303 @NonNull 4304 public LayoutInflater getLayoutInflater() { 4305 return getWindow().getLayoutInflater(); 4306 } 4307 4308 /** 4309 * Returns a {@link MenuInflater} with this context. 4310 */ 4311 @NonNull 4312 public MenuInflater getMenuInflater() { 4313 // Make sure that action views can get an appropriate theme. 4314 if (mMenuInflater == null) { 4315 initWindowDecorActionBar(); 4316 if (mActionBar != null) { 4317 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 4318 } else { 4319 mMenuInflater = new MenuInflater(this); 4320 } 4321 } 4322 return mMenuInflater; 4323 } 4324 4325 @Override 4326 public void setTheme(int resid) { 4327 super.setTheme(resid); 4328 mWindow.setTheme(resid); 4329 } 4330 4331 @Override 4332 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 4333 boolean first) { 4334 if (mParent == null) { 4335 super.onApplyThemeResource(theme, resid, first); 4336 } else { 4337 try { 4338 theme.setTo(mParent.getTheme()); 4339 } catch (Exception e) { 4340 // Empty 4341 } 4342 theme.applyStyle(resid, false); 4343 } 4344 4345 // Get the primary color and update the TaskDescription for this activity 4346 TypedArray a = theme.obtainStyledAttributes( 4347 com.android.internal.R.styleable.ActivityTaskDescription); 4348 if (mTaskDescription.getPrimaryColor() == 0) { 4349 int colorPrimary = a.getColor( 4350 com.android.internal.R.styleable.ActivityTaskDescription_colorPrimary, 0); 4351 if (colorPrimary != 0 && Color.alpha(colorPrimary) == 0xFF) { 4352 mTaskDescription.setPrimaryColor(colorPrimary); 4353 } 4354 } 4355 4356 int colorBackground = a.getColor( 4357 com.android.internal.R.styleable.ActivityTaskDescription_colorBackground, 0); 4358 if (colorBackground != 0 && Color.alpha(colorBackground) == 0xFF) { 4359 mTaskDescription.setBackgroundColor(colorBackground); 4360 } 4361 4362 final int statusBarColor = a.getColor( 4363 com.android.internal.R.styleable.ActivityTaskDescription_statusBarColor, 0); 4364 if (statusBarColor != 0) { 4365 mTaskDescription.setStatusBarColor(statusBarColor); 4366 } 4367 4368 final int navigationBarColor = a.getColor( 4369 com.android.internal.R.styleable.ActivityTaskDescription_navigationBarColor, 0); 4370 if (navigationBarColor != 0) { 4371 mTaskDescription.setNavigationBarColor(navigationBarColor); 4372 } 4373 4374 a.recycle(); 4375 setTaskDescription(mTaskDescription); 4376 } 4377 4378 /** 4379 * Requests permissions to be granted to this application. These permissions 4380 * must be requested in your manifest, they should not be granted to your app, 4381 * and they should have protection level {@link android.content.pm.PermissionInfo 4382 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 4383 * the platform or a third-party app. 4384 * <p> 4385 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 4386 * are granted at install time if requested in the manifest. Signature permissions 4387 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 4388 * install time if requested in the manifest and the signature of your app matches 4389 * the signature of the app declaring the permissions. 4390 * </p> 4391 * <p> 4392 * If your app does not have the requested permissions the user will be presented 4393 * with UI for accepting them. After the user has accepted or rejected the 4394 * requested permissions you will receive a callback on {@link 4395 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4396 * permissions were granted or not. 4397 * </p> 4398 * <p> 4399 * Note that requesting a permission does not guarantee it will be granted and 4400 * your app should be able to run without having this permission. 4401 * </p> 4402 * <p> 4403 * This method may start an activity allowing the user to choose which permissions 4404 * to grant and which to reject. Hence, you should be prepared that your activity 4405 * may be paused and resumed. Further, granting some permissions may require 4406 * a restart of you application. In such a case, the system will recreate the 4407 * activity stack before delivering the result to {@link 4408 * #onRequestPermissionsResult(int, String[], int[])}. 4409 * </p> 4410 * <p> 4411 * When checking whether you have a permission you should use {@link 4412 * #checkSelfPermission(String)}. 4413 * </p> 4414 * <p> 4415 * Calling this API for permissions already granted to your app would show UI 4416 * to the user to decide whether the app can still hold these permissions. This 4417 * can be useful if the way your app uses data guarded by the permissions 4418 * changes significantly. 4419 * </p> 4420 * <p> 4421 * You cannot request a permission if your activity sets {@link 4422 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4423 * <code>true</code> because in this case the activity would not receive 4424 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4425 * </p> 4426 * <p> 4427 * The <a href="http://developer.android.com/samples/RuntimePermissions/index.html"> 4428 * RuntimePermissions</a> sample app demonstrates how to use this method to 4429 * request permissions at run time. 4430 * </p> 4431 * 4432 * @param permissions The requested permissions. Must me non-null and not empty. 4433 * @param requestCode Application specific request code to match with a result 4434 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4435 * Should be >= 0. 4436 * 4437 * @throws IllegalArgumentException if requestCode is negative. 4438 * 4439 * @see #onRequestPermissionsResult(int, String[], int[]) 4440 * @see #checkSelfPermission(String) 4441 * @see #shouldShowRequestPermissionRationale(String) 4442 */ 4443 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4444 if (requestCode < 0) { 4445 throw new IllegalArgumentException("requestCode should be >= 0"); 4446 } 4447 if (mHasCurrentPermissionsRequest) { 4448 Log.w(TAG, "Can request only one set of permissions at a time"); 4449 // Dispatch the callback with empty arrays which means a cancellation. 4450 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4451 return; 4452 } 4453 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4454 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4455 mHasCurrentPermissionsRequest = true; 4456 } 4457 4458 /** 4459 * Callback for the result from requesting permissions. This method 4460 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4461 * <p> 4462 * <strong>Note:</strong> It is possible that the permissions request interaction 4463 * with the user is interrupted. In this case you will receive empty permissions 4464 * and results arrays which should be treated as a cancellation. 4465 * </p> 4466 * 4467 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4468 * @param permissions The requested permissions. Never null. 4469 * @param grantResults The grant results for the corresponding permissions 4470 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4471 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4472 * 4473 * @see #requestPermissions(String[], int) 4474 */ 4475 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4476 @NonNull int[] grantResults) { 4477 /* callback - no nothing */ 4478 } 4479 4480 /** 4481 * Gets whether you should show UI with rationale for requesting a permission. 4482 * You should do this only if you do not have the permission and the context in 4483 * which the permission is requested does not clearly communicate to the user 4484 * what would be the benefit from granting this permission. 4485 * <p> 4486 * For example, if you write a camera app, requesting the camera permission 4487 * would be expected by the user and no rationale for why it is requested is 4488 * needed. If however, the app needs location for tagging photos then a non-tech 4489 * savvy user may wonder how location is related to taking photos. In this case 4490 * you may choose to show UI with rationale of requesting this permission. 4491 * </p> 4492 * 4493 * @param permission A permission your app wants to request. 4494 * @return Whether you can show permission rationale UI. 4495 * 4496 * @see #checkSelfPermission(String) 4497 * @see #requestPermissions(String[], int) 4498 * @see #onRequestPermissionsResult(int, String[], int[]) 4499 */ 4500 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4501 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4502 } 4503 4504 /** 4505 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4506 * with no options. 4507 * 4508 * @param intent The intent to start. 4509 * @param requestCode If >= 0, this code will be returned in 4510 * onActivityResult() when the activity exits. 4511 * 4512 * @throws android.content.ActivityNotFoundException 4513 * 4514 * @see #startActivity 4515 */ 4516 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4517 startActivityForResult(intent, requestCode, null); 4518 } 4519 4520 /** 4521 * Launch an activity for which you would like a result when it finished. 4522 * When this activity exits, your 4523 * onActivityResult() method will be called with the given requestCode. 4524 * Using a negative requestCode is the same as calling 4525 * {@link #startActivity} (the activity is not launched as a sub-activity). 4526 * 4527 * <p>Note that this method should only be used with Intent protocols 4528 * that are defined to return a result. In other protocols (such as 4529 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4530 * not get the result when you expect. For example, if the activity you 4531 * are launching uses {@link Intent#FLAG_ACTIVITY_NEW_TASK}, it will not 4532 * run in your task and thus you will immediately receive a cancel result. 4533 * 4534 * <p>As a special case, if you call startActivityForResult() with a requestCode 4535 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4536 * activity, then your window will not be displayed until a result is 4537 * returned back from the started activity. This is to avoid visible 4538 * flickering when redirecting to another activity. 4539 * 4540 * <p>This method throws {@link android.content.ActivityNotFoundException} 4541 * if there was no Activity found to run the given Intent. 4542 * 4543 * @param intent The intent to start. 4544 * @param requestCode If >= 0, this code will be returned in 4545 * onActivityResult() when the activity exits. 4546 * @param options Additional options for how the Activity should be started. 4547 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4548 * Context.startActivity(Intent, Bundle)} for more details. 4549 * 4550 * @throws android.content.ActivityNotFoundException 4551 * 4552 * @see #startActivity 4553 */ 4554 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4555 @Nullable Bundle options) { 4556 if (mParent == null) { 4557 options = transferSpringboardActivityOptions(options); 4558 Instrumentation.ActivityResult ar = 4559 mInstrumentation.execStartActivity( 4560 this, mMainThread.getApplicationThread(), mToken, this, 4561 intent, requestCode, options); 4562 if (ar != null) { 4563 mMainThread.sendActivityResult( 4564 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4565 ar.getResultData()); 4566 } 4567 if (requestCode >= 0) { 4568 // If this start is requesting a result, we can avoid making 4569 // the activity visible until the result is received. Setting 4570 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4571 // activity hidden during this time, to avoid flickering. 4572 // This can only be done when a result is requested because 4573 // that guarantees we will get information back when the 4574 // activity is finished, no matter what happens to it. 4575 mStartedActivity = true; 4576 } 4577 4578 cancelInputsAndStartExitTransition(options); 4579 // TODO Consider clearing/flushing other event sources and events for child windows. 4580 } else { 4581 if (options != null) { 4582 mParent.startActivityFromChild(this, intent, requestCode, options); 4583 } else { 4584 // Note we want to go through this method for compatibility with 4585 // existing applications that may have overridden it. 4586 mParent.startActivityFromChild(this, intent, requestCode); 4587 } 4588 } 4589 } 4590 4591 /** 4592 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4593 * 4594 * @param options The ActivityOptions bundle used to start an Activity. 4595 */ 4596 private void cancelInputsAndStartExitTransition(Bundle options) { 4597 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4598 if (decor != null) { 4599 decor.cancelPendingInputEvents(); 4600 } 4601 if (options != null && !isTopOfTask()) { 4602 mActivityTransitionState.startExitOutTransition(this, options); 4603 } 4604 } 4605 4606 /** 4607 * Returns whether there are any activity transitions currently running on this 4608 * activity. A return value of {@code true} can mean that either an enter or 4609 * exit transition is running, including whether the background of the activity 4610 * is animating as a part of that transition. 4611 * 4612 * @return true if a transition is currently running on this activity, false otherwise. 4613 */ 4614 public boolean isActivityTransitionRunning() { 4615 return mActivityTransitionState.isTransitionRunning(); 4616 } 4617 4618 private Bundle transferSpringboardActivityOptions(Bundle options) { 4619 if (options == null && (mWindow != null && !mWindow.isActive())) { 4620 final ActivityOptions activityOptions = getActivityOptions(); 4621 if (activityOptions != null && 4622 activityOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { 4623 return activityOptions.toBundle(); 4624 } 4625 } 4626 return options; 4627 } 4628 4629 /** 4630 * @hide Implement to provide correct calling token. 4631 */ 4632 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4633 startActivityForResultAsUser(intent, requestCode, null, user); 4634 } 4635 4636 /** 4637 * @hide Implement to provide correct calling token. 4638 */ 4639 public void startActivityForResultAsUser(Intent intent, int requestCode, 4640 @Nullable Bundle options, UserHandle user) { 4641 startActivityForResultAsUser(intent, mEmbeddedID, requestCode, options, user); 4642 } 4643 4644 /** 4645 * @hide Implement to provide correct calling token. 4646 */ 4647 public void startActivityForResultAsUser(Intent intent, String resultWho, int requestCode, 4648 @Nullable Bundle options, UserHandle user) { 4649 if (mParent != null) { 4650 throw new RuntimeException("Can't be called from a child"); 4651 } 4652 options = transferSpringboardActivityOptions(options); 4653 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4654 this, mMainThread.getApplicationThread(), mToken, resultWho, intent, requestCode, 4655 options, user); 4656 if (ar != null) { 4657 mMainThread.sendActivityResult( 4658 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4659 } 4660 if (requestCode >= 0) { 4661 // If this start is requesting a result, we can avoid making 4662 // the activity visible until the result is received. Setting 4663 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4664 // activity hidden during this time, to avoid flickering. 4665 // This can only be done when a result is requested because 4666 // that guarantees we will get information back when the 4667 // activity is finished, no matter what happens to it. 4668 mStartedActivity = true; 4669 } 4670 4671 cancelInputsAndStartExitTransition(options); 4672 } 4673 4674 /** 4675 * @hide Implement to provide correct calling token. 4676 */ 4677 public void startActivityAsUser(Intent intent, UserHandle user) { 4678 startActivityAsUser(intent, null, user); 4679 } 4680 4681 /** 4682 * @hide Implement to provide correct calling token. 4683 */ 4684 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4685 if (mParent != null) { 4686 throw new RuntimeException("Can't be called from a child"); 4687 } 4688 options = transferSpringboardActivityOptions(options); 4689 Instrumentation.ActivityResult ar = 4690 mInstrumentation.execStartActivity( 4691 this, mMainThread.getApplicationThread(), mToken, mEmbeddedID, 4692 intent, -1, options, user); 4693 if (ar != null) { 4694 mMainThread.sendActivityResult( 4695 mToken, mEmbeddedID, -1, ar.getResultCode(), 4696 ar.getResultData()); 4697 } 4698 cancelInputsAndStartExitTransition(options); 4699 } 4700 4701 /** 4702 * Start a new activity as if it was started by the activity that started our 4703 * current activity. This is for the resolver and chooser activities, which operate 4704 * as intermediaries that dispatch their intent to the target the user selects -- to 4705 * do this, they must perform all security checks including permission grants as if 4706 * their launch had come from the original activity. 4707 * @param intent The Intent to start. 4708 * @param options ActivityOptions or null. 4709 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4710 * caller it is doing the start is, is actually allowed to start the target activity. 4711 * If you set this to true, you must set an explicit component in the Intent and do any 4712 * appropriate security checks yourself. 4713 * @param userId The user the new activity should run as. 4714 * @hide 4715 */ 4716 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4717 boolean ignoreTargetSecurity, int userId) { 4718 if (mParent != null) { 4719 throw new RuntimeException("Can't be called from a child"); 4720 } 4721 options = transferSpringboardActivityOptions(options); 4722 Instrumentation.ActivityResult ar = 4723 mInstrumentation.execStartActivityAsCaller( 4724 this, mMainThread.getApplicationThread(), mToken, this, 4725 intent, -1, options, ignoreTargetSecurity, userId); 4726 if (ar != null) { 4727 mMainThread.sendActivityResult( 4728 mToken, mEmbeddedID, -1, ar.getResultCode(), 4729 ar.getResultData()); 4730 } 4731 cancelInputsAndStartExitTransition(options); 4732 } 4733 4734 /** 4735 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4736 * Intent, int, int, int, Bundle)} with no options. 4737 * 4738 * @param intent The IntentSender to launch. 4739 * @param requestCode If >= 0, this code will be returned in 4740 * onActivityResult() when the activity exits. 4741 * @param fillInIntent If non-null, this will be provided as the 4742 * intent parameter to {@link IntentSender#sendIntent}. 4743 * @param flagsMask Intent flags in the original IntentSender that you 4744 * would like to change. 4745 * @param flagsValues Desired values for any bits set in 4746 * <var>flagsMask</var> 4747 * @param extraFlags Always set to 0. 4748 */ 4749 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4750 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4751 throws IntentSender.SendIntentException { 4752 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4753 flagsValues, extraFlags, null); 4754 } 4755 4756 /** 4757 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4758 * to use a IntentSender to describe the activity to be started. If 4759 * the IntentSender is for an activity, that activity will be started 4760 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4761 * here; otherwise, its associated action will be executed (such as 4762 * sending a broadcast) as if you had called 4763 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4764 * 4765 * @param intent The IntentSender to launch. 4766 * @param requestCode If >= 0, this code will be returned in 4767 * onActivityResult() when the activity exits. 4768 * @param fillInIntent If non-null, this will be provided as the 4769 * intent parameter to {@link IntentSender#sendIntent}. 4770 * @param flagsMask Intent flags in the original IntentSender that you 4771 * would like to change. 4772 * @param flagsValues Desired values for any bits set in 4773 * <var>flagsMask</var> 4774 * @param extraFlags Always set to 0. 4775 * @param options Additional options for how the Activity should be started. 4776 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4777 * Context.startActivity(Intent, Bundle)} for more details. If options 4778 * have also been supplied by the IntentSender, options given here will 4779 * override any that conflict with those given by the IntentSender. 4780 */ 4781 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4782 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4783 Bundle options) throws IntentSender.SendIntentException { 4784 if (mParent == null) { 4785 startIntentSenderForResultInner(intent, mEmbeddedID, requestCode, fillInIntent, 4786 flagsMask, flagsValues, options); 4787 } else if (options != null) { 4788 mParent.startIntentSenderFromChild(this, intent, requestCode, 4789 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4790 } else { 4791 // Note we want to go through this call for compatibility with 4792 // existing applications that may have overridden the method. 4793 mParent.startIntentSenderFromChild(this, intent, requestCode, 4794 fillInIntent, flagsMask, flagsValues, extraFlags); 4795 } 4796 } 4797 4798 private void startIntentSenderForResultInner(IntentSender intent, String who, int requestCode, 4799 Intent fillInIntent, int flagsMask, int flagsValues, 4800 Bundle options) 4801 throws IntentSender.SendIntentException { 4802 try { 4803 String resolvedType = null; 4804 if (fillInIntent != null) { 4805 fillInIntent.migrateExtraStreamToClipData(); 4806 fillInIntent.prepareToLeaveProcess(this); 4807 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4808 } 4809 int result = ActivityManager.getService() 4810 .startActivityIntentSender(mMainThread.getApplicationThread(), 4811 intent != null ? intent.getTarget() : null, 4812 intent != null ? intent.getWhitelistToken() : null, 4813 fillInIntent, resolvedType, mToken, who, 4814 requestCode, flagsMask, flagsValues, options); 4815 if (result == ActivityManager.START_CANCELED) { 4816 throw new IntentSender.SendIntentException(); 4817 } 4818 Instrumentation.checkStartActivityResult(result, null); 4819 } catch (RemoteException e) { 4820 } 4821 if (requestCode >= 0) { 4822 // If this start is requesting a result, we can avoid making 4823 // the activity visible until the result is received. Setting 4824 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4825 // activity hidden during this time, to avoid flickering. 4826 // This can only be done when a result is requested because 4827 // that guarantees we will get information back when the 4828 // activity is finished, no matter what happens to it. 4829 mStartedActivity = true; 4830 } 4831 } 4832 4833 /** 4834 * Same as {@link #startActivity(Intent, Bundle)} with no options 4835 * specified. 4836 * 4837 * @param intent The intent to start. 4838 * 4839 * @throws android.content.ActivityNotFoundException 4840 * 4841 * @see #startActivity(Intent, Bundle) 4842 * @see #startActivityForResult 4843 */ 4844 @Override 4845 public void startActivity(Intent intent) { 4846 this.startActivity(intent, null); 4847 } 4848 4849 /** 4850 * Launch a new activity. You will not receive any information about when 4851 * the activity exits. This implementation overrides the base version, 4852 * providing information about 4853 * the activity performing the launch. Because of this additional 4854 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4855 * required; if not specified, the new activity will be added to the 4856 * task of the caller. 4857 * 4858 * <p>This method throws {@link android.content.ActivityNotFoundException} 4859 * if there was no Activity found to run the given Intent. 4860 * 4861 * @param intent The intent to start. 4862 * @param options Additional options for how the Activity should be started. 4863 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4864 * Context.startActivity(Intent, Bundle)} for more details. 4865 * 4866 * @throws android.content.ActivityNotFoundException 4867 * 4868 * @see #startActivity(Intent) 4869 * @see #startActivityForResult 4870 */ 4871 @Override 4872 public void startActivity(Intent intent, @Nullable Bundle options) { 4873 if (options != null) { 4874 startActivityForResult(intent, -1, options); 4875 } else { 4876 // Note we want to go through this call for compatibility with 4877 // applications that may have overridden the method. 4878 startActivityForResult(intent, -1); 4879 } 4880 } 4881 4882 /** 4883 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4884 * specified. 4885 * 4886 * @param intents The intents to start. 4887 * 4888 * @throws android.content.ActivityNotFoundException 4889 * 4890 * @see #startActivities(Intent[], Bundle) 4891 * @see #startActivityForResult 4892 */ 4893 @Override 4894 public void startActivities(Intent[] intents) { 4895 startActivities(intents, null); 4896 } 4897 4898 /** 4899 * Launch a new activity. You will not receive any information about when 4900 * the activity exits. This implementation overrides the base version, 4901 * providing information about 4902 * the activity performing the launch. Because of this additional 4903 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4904 * required; if not specified, the new activity will be added to the 4905 * task of the caller. 4906 * 4907 * <p>This method throws {@link android.content.ActivityNotFoundException} 4908 * if there was no Activity found to run the given Intent. 4909 * 4910 * @param intents The intents to start. 4911 * @param options Additional options for how the Activity should be started. 4912 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4913 * Context.startActivity(Intent, Bundle)} for more details. 4914 * 4915 * @throws android.content.ActivityNotFoundException 4916 * 4917 * @see #startActivities(Intent[]) 4918 * @see #startActivityForResult 4919 */ 4920 @Override 4921 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4922 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4923 mToken, this, intents, options); 4924 } 4925 4926 /** 4927 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4928 * with no options. 4929 * 4930 * @param intent The IntentSender to launch. 4931 * @param fillInIntent If non-null, this will be provided as the 4932 * intent parameter to {@link IntentSender#sendIntent}. 4933 * @param flagsMask Intent flags in the original IntentSender that you 4934 * would like to change. 4935 * @param flagsValues Desired values for any bits set in 4936 * <var>flagsMask</var> 4937 * @param extraFlags Always set to 0. 4938 */ 4939 public void startIntentSender(IntentSender intent, 4940 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4941 throws IntentSender.SendIntentException { 4942 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4943 extraFlags, null); 4944 } 4945 4946 /** 4947 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4948 * to start; see 4949 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4950 * for more information. 4951 * 4952 * @param intent The IntentSender to launch. 4953 * @param fillInIntent If non-null, this will be provided as the 4954 * intent parameter to {@link IntentSender#sendIntent}. 4955 * @param flagsMask Intent flags in the original IntentSender that you 4956 * would like to change. 4957 * @param flagsValues Desired values for any bits set in 4958 * <var>flagsMask</var> 4959 * @param extraFlags Always set to 0. 4960 * @param options Additional options for how the Activity should be started. 4961 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4962 * Context.startActivity(Intent, Bundle)} for more details. If options 4963 * have also been supplied by the IntentSender, options given here will 4964 * override any that conflict with those given by the IntentSender. 4965 */ 4966 public void startIntentSender(IntentSender intent, 4967 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4968 Bundle options) throws IntentSender.SendIntentException { 4969 if (options != null) { 4970 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4971 flagsValues, extraFlags, options); 4972 } else { 4973 // Note we want to go through this call for compatibility with 4974 // applications that may have overridden the method. 4975 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4976 flagsValues, extraFlags); 4977 } 4978 } 4979 4980 /** 4981 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4982 * with no options. 4983 * 4984 * @param intent The intent to start. 4985 * @param requestCode If >= 0, this code will be returned in 4986 * onActivityResult() when the activity exits, as described in 4987 * {@link #startActivityForResult}. 4988 * 4989 * @return If a new activity was launched then true is returned; otherwise 4990 * false is returned and you must handle the Intent yourself. 4991 * 4992 * @see #startActivity 4993 * @see #startActivityForResult 4994 */ 4995 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4996 int requestCode) { 4997 return startActivityIfNeeded(intent, requestCode, null); 4998 } 4999 5000 /** 5001 * A special variation to launch an activity only if a new activity 5002 * instance is needed to handle the given Intent. In other words, this is 5003 * just like {@link #startActivityForResult(Intent, int)} except: if you are 5004 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 5005 * singleTask or singleTop 5006 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 5007 * and the activity 5008 * that handles <var>intent</var> is the same as your currently running 5009 * activity, then a new instance is not needed. In this case, instead of 5010 * the normal behavior of calling {@link #onNewIntent} this function will 5011 * return and you can handle the Intent yourself. 5012 * 5013 * <p>This function can only be called from a top-level activity; if it is 5014 * called from a child activity, a runtime exception will be thrown. 5015 * 5016 * @param intent The intent to start. 5017 * @param requestCode If >= 0, this code will be returned in 5018 * onActivityResult() when the activity exits, as described in 5019 * {@link #startActivityForResult}. 5020 * @param options Additional options for how the Activity should be started. 5021 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5022 * Context.startActivity(Intent, Bundle)} for more details. 5023 * 5024 * @return If a new activity was launched then true is returned; otherwise 5025 * false is returned and you must handle the Intent yourself. 5026 * 5027 * @see #startActivity 5028 * @see #startActivityForResult 5029 */ 5030 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 5031 int requestCode, @Nullable Bundle options) { 5032 if (mParent == null) { 5033 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 5034 try { 5035 Uri referrer = onProvideReferrer(); 5036 if (referrer != null) { 5037 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 5038 } 5039 intent.migrateExtraStreamToClipData(); 5040 intent.prepareToLeaveProcess(this); 5041 result = ActivityManager.getService() 5042 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 5043 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 5044 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 5045 null, options); 5046 } catch (RemoteException e) { 5047 // Empty 5048 } 5049 5050 Instrumentation.checkStartActivityResult(result, intent); 5051 5052 if (requestCode >= 0) { 5053 // If this start is requesting a result, we can avoid making 5054 // the activity visible until the result is received. Setting 5055 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 5056 // activity hidden during this time, to avoid flickering. 5057 // This can only be done when a result is requested because 5058 // that guarantees we will get information back when the 5059 // activity is finished, no matter what happens to it. 5060 mStartedActivity = true; 5061 } 5062 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 5063 } 5064 5065 throw new UnsupportedOperationException( 5066 "startActivityIfNeeded can only be called from a top-level activity"); 5067 } 5068 5069 /** 5070 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 5071 * no options. 5072 * 5073 * @param intent The intent to dispatch to the next activity. For 5074 * correct behavior, this must be the same as the Intent that started 5075 * your own activity; the only changes you can make are to the extras 5076 * inside of it. 5077 * 5078 * @return Returns a boolean indicating whether there was another Activity 5079 * to start: true if there was a next activity to start, false if there 5080 * wasn't. In general, if true is returned you will then want to call 5081 * finish() on yourself. 5082 */ 5083 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 5084 return startNextMatchingActivity(intent, null); 5085 } 5086 5087 /** 5088 * Special version of starting an activity, for use when you are replacing 5089 * other activity components. You can use this to hand the Intent off 5090 * to the next Activity that can handle it. You typically call this in 5091 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 5092 * 5093 * @param intent The intent to dispatch to the next activity. For 5094 * correct behavior, this must be the same as the Intent that started 5095 * your own activity; the only changes you can make are to the extras 5096 * inside of it. 5097 * @param options Additional options for how the Activity should be started. 5098 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5099 * Context.startActivity(Intent, Bundle)} for more details. 5100 * 5101 * @return Returns a boolean indicating whether there was another Activity 5102 * to start: true if there was a next activity to start, false if there 5103 * wasn't. In general, if true is returned you will then want to call 5104 * finish() on yourself. 5105 */ 5106 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 5107 @Nullable Bundle options) { 5108 if (mParent == null) { 5109 try { 5110 intent.migrateExtraStreamToClipData(); 5111 intent.prepareToLeaveProcess(this); 5112 return ActivityManager.getService() 5113 .startNextMatchingActivity(mToken, intent, options); 5114 } catch (RemoteException e) { 5115 // Empty 5116 } 5117 return false; 5118 } 5119 5120 throw new UnsupportedOperationException( 5121 "startNextMatchingActivity can only be called from a top-level activity"); 5122 } 5123 5124 /** 5125 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 5126 * with no options. 5127 * 5128 * @param child The activity making the call. 5129 * @param intent The intent to start. 5130 * @param requestCode Reply request code. < 0 if reply is not requested. 5131 * 5132 * @throws android.content.ActivityNotFoundException 5133 * 5134 * @see #startActivity 5135 * @see #startActivityForResult 5136 */ 5137 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5138 int requestCode) { 5139 startActivityFromChild(child, intent, requestCode, null); 5140 } 5141 5142 /** 5143 * This is called when a child activity of this one calls its 5144 * {@link #startActivity} or {@link #startActivityForResult} method. 5145 * 5146 * <p>This method throws {@link android.content.ActivityNotFoundException} 5147 * if there was no Activity found to run the given Intent. 5148 * 5149 * @param child The activity making the call. 5150 * @param intent The intent to start. 5151 * @param requestCode Reply request code. < 0 if reply is not requested. 5152 * @param options Additional options for how the Activity should be started. 5153 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5154 * Context.startActivity(Intent, Bundle)} for more details. 5155 * 5156 * @throws android.content.ActivityNotFoundException 5157 * 5158 * @see #startActivity 5159 * @see #startActivityForResult 5160 */ 5161 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5162 int requestCode, @Nullable Bundle options) { 5163 options = transferSpringboardActivityOptions(options); 5164 Instrumentation.ActivityResult ar = 5165 mInstrumentation.execStartActivity( 5166 this, mMainThread.getApplicationThread(), mToken, child, 5167 intent, requestCode, options); 5168 if (ar != null) { 5169 mMainThread.sendActivityResult( 5170 mToken, child.mEmbeddedID, requestCode, 5171 ar.getResultCode(), ar.getResultData()); 5172 } 5173 cancelInputsAndStartExitTransition(options); 5174 } 5175 5176 /** 5177 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 5178 * with no options. 5179 * 5180 * @param fragment The fragment making the call. 5181 * @param intent The intent to start. 5182 * @param requestCode Reply request code. < 0 if reply is not requested. 5183 * 5184 * @throws android.content.ActivityNotFoundException 5185 * 5186 * @see Fragment#startActivity 5187 * @see Fragment#startActivityForResult 5188 * 5189 * @deprecated Use {@link android.support.v4.app.FragmentActivity#startActivityFromFragment( 5190 * android.support.v4.app.Fragment,Intent,int)} 5191 */ 5192 @Deprecated 5193 public void startActivityFromFragment(@NonNull Fragment fragment, 5194 @RequiresPermission Intent intent, int requestCode) { 5195 startActivityFromFragment(fragment, intent, requestCode, null); 5196 } 5197 5198 /** 5199 * This is called when a Fragment in this activity calls its 5200 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 5201 * method. 5202 * 5203 * <p>This method throws {@link android.content.ActivityNotFoundException} 5204 * if there was no Activity found to run the given Intent. 5205 * 5206 * @param fragment The fragment making the call. 5207 * @param intent The intent to start. 5208 * @param requestCode Reply request code. < 0 if reply is not requested. 5209 * @param options Additional options for how the Activity should be started. 5210 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5211 * Context.startActivity(Intent, Bundle)} for more details. 5212 * 5213 * @throws android.content.ActivityNotFoundException 5214 * 5215 * @see Fragment#startActivity 5216 * @see Fragment#startActivityForResult 5217 * 5218 * @deprecated Use {@link android.support.v4.app.FragmentActivity#startActivityFromFragment( 5219 * android.support.v4.app.Fragment,Intent,int,Bundle)} 5220 */ 5221 @Deprecated 5222 public void startActivityFromFragment(@NonNull Fragment fragment, 5223 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 5224 startActivityForResult(fragment.mWho, intent, requestCode, options); 5225 } 5226 5227 /** 5228 * @hide 5229 */ 5230 public void startActivityAsUserFromFragment(@NonNull Fragment fragment, 5231 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options, 5232 UserHandle user) { 5233 startActivityForResultAsUser(intent, fragment.mWho, requestCode, options, user); 5234 } 5235 5236 /** 5237 * @hide 5238 */ 5239 @Override 5240 public void startActivityForResult( 5241 String who, Intent intent, int requestCode, @Nullable Bundle options) { 5242 Uri referrer = onProvideReferrer(); 5243 if (referrer != null) { 5244 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 5245 } 5246 options = transferSpringboardActivityOptions(options); 5247 Instrumentation.ActivityResult ar = 5248 mInstrumentation.execStartActivity( 5249 this, mMainThread.getApplicationThread(), mToken, who, 5250 intent, requestCode, options); 5251 if (ar != null) { 5252 mMainThread.sendActivityResult( 5253 mToken, who, requestCode, 5254 ar.getResultCode(), ar.getResultData()); 5255 } 5256 cancelInputsAndStartExitTransition(options); 5257 } 5258 5259 /** 5260 * @hide 5261 */ 5262 @Override 5263 public boolean canStartActivityForResult() { 5264 return true; 5265 } 5266 5267 /** 5268 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 5269 * int, Intent, int, int, int, Bundle)} with no options. 5270 */ 5271 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5272 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5273 int extraFlags) 5274 throws IntentSender.SendIntentException { 5275 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 5276 flagsMask, flagsValues, extraFlags, null); 5277 } 5278 5279 /** 5280 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 5281 * taking a IntentSender; see 5282 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5283 * for more information. 5284 */ 5285 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5286 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5287 int extraFlags, @Nullable Bundle options) 5288 throws IntentSender.SendIntentException { 5289 startIntentSenderForResultInner(intent, child.mEmbeddedID, requestCode, fillInIntent, 5290 flagsMask, flagsValues, options); 5291 } 5292 5293 /** 5294 * Like {@link #startIntentSenderFromChild}, but taking a Fragment; see 5295 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5296 * for more information. 5297 * 5298 * @hide 5299 */ 5300 public void startIntentSenderFromChildFragment(Fragment child, IntentSender intent, 5301 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5302 int extraFlags, @Nullable Bundle options) 5303 throws IntentSender.SendIntentException { 5304 startIntentSenderForResultInner(intent, child.mWho, requestCode, fillInIntent, 5305 flagsMask, flagsValues, options); 5306 } 5307 5308 /** 5309 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 5310 * or {@link #finish} to specify an explicit transition animation to 5311 * perform next. 5312 * 5313 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 5314 * to using this with starting activities is to supply the desired animation 5315 * information through a {@link ActivityOptions} bundle to 5316 * {@link #startActivity(Intent, Bundle)} or a related function. This allows 5317 * you to specify a custom animation even when starting an activity from 5318 * outside the context of the current top activity. 5319 * 5320 * @param enterAnim A resource ID of the animation resource to use for 5321 * the incoming activity. Use 0 for no animation. 5322 * @param exitAnim A resource ID of the animation resource to use for 5323 * the outgoing activity. Use 0 for no animation. 5324 */ 5325 public void overridePendingTransition(int enterAnim, int exitAnim) { 5326 try { 5327 ActivityManager.getService().overridePendingTransition( 5328 mToken, getPackageName(), enterAnim, exitAnim); 5329 } catch (RemoteException e) { 5330 } 5331 } 5332 5333 /** 5334 * Call this to set the result that your activity will return to its 5335 * caller. 5336 * 5337 * @param resultCode The result code to propagate back to the originating 5338 * activity, often RESULT_CANCELED or RESULT_OK 5339 * 5340 * @see #RESULT_CANCELED 5341 * @see #RESULT_OK 5342 * @see #RESULT_FIRST_USER 5343 * @see #setResult(int, Intent) 5344 */ 5345 public final void setResult(int resultCode) { 5346 synchronized (this) { 5347 mResultCode = resultCode; 5348 mResultData = null; 5349 } 5350 } 5351 5352 /** 5353 * Call this to set the result that your activity will return to its 5354 * caller. 5355 * 5356 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 5357 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 5358 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 5359 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 5360 * Activity receiving the result access to the specific URIs in the Intent. 5361 * Access will remain until the Activity has finished (it will remain across the hosting 5362 * process being killed and other temporary destruction) and will be added 5363 * to any existing set of URI permissions it already holds. 5364 * 5365 * @param resultCode The result code to propagate back to the originating 5366 * activity, often RESULT_CANCELED or RESULT_OK 5367 * @param data The data to propagate back to the originating activity. 5368 * 5369 * @see #RESULT_CANCELED 5370 * @see #RESULT_OK 5371 * @see #RESULT_FIRST_USER 5372 * @see #setResult(int) 5373 */ 5374 public final void setResult(int resultCode, Intent data) { 5375 synchronized (this) { 5376 mResultCode = resultCode; 5377 mResultData = data; 5378 } 5379 } 5380 5381 /** 5382 * Return information about who launched this activity. If the launching Intent 5383 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 5384 * that will be returned as-is; otherwise, if known, an 5385 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 5386 * package name that started the Intent will be returned. This may return null if no 5387 * referrer can be identified -- it is neither explicitly specified, nor is it known which 5388 * application package was involved. 5389 * 5390 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 5391 * return the referrer that submitted that new intent to the activity. Otherwise, it 5392 * always returns the referrer of the original Intent.</p> 5393 * 5394 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 5395 * referrer information, applications can spoof it.</p> 5396 */ 5397 @Nullable 5398 public Uri getReferrer() { 5399 Intent intent = getIntent(); 5400 try { 5401 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 5402 if (referrer != null) { 5403 return referrer; 5404 } 5405 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 5406 if (referrerName != null) { 5407 return Uri.parse(referrerName); 5408 } 5409 } catch (BadParcelableException e) { 5410 Log.w(TAG, "Cannot read referrer from intent;" 5411 + " intent extras contain unknown custom Parcelable objects"); 5412 } 5413 if (mReferrer != null) { 5414 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 5415 } 5416 return null; 5417 } 5418 5419 /** 5420 * Override to generate the desired referrer for the content currently being shown 5421 * by the app. The default implementation returns null, meaning the referrer will simply 5422 * be the android-app: of the package name of this activity. Return a non-null Uri to 5423 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 5424 */ 5425 public Uri onProvideReferrer() { 5426 return null; 5427 } 5428 5429 /** 5430 * Return the name of the package that invoked this activity. This is who 5431 * the data in {@link #setResult setResult()} will be sent to. You can 5432 * use this information to validate that the recipient is allowed to 5433 * receive the data. 5434 * 5435 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5436 * did not use the {@link #startActivityForResult} 5437 * form that includes a request code), then the calling package will be 5438 * null.</p> 5439 * 5440 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 5441 * the result from this method was unstable. If the process hosting the calling 5442 * package was no longer running, it would return null instead of the proper package 5443 * name. You can use {@link #getCallingActivity()} and retrieve the package name 5444 * from that instead.</p> 5445 * 5446 * @return The package of the activity that will receive your 5447 * reply, or null if none. 5448 */ 5449 @Nullable 5450 public String getCallingPackage() { 5451 try { 5452 return ActivityManager.getService().getCallingPackage(mToken); 5453 } catch (RemoteException e) { 5454 return null; 5455 } 5456 } 5457 5458 /** 5459 * Return the name of the activity that invoked this activity. This is 5460 * who the data in {@link #setResult setResult()} will be sent to. You 5461 * can use this information to validate that the recipient is allowed to 5462 * receive the data. 5463 * 5464 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5465 * did not use the {@link #startActivityForResult} 5466 * form that includes a request code), then the calling package will be 5467 * null. 5468 * 5469 * @return The ComponentName of the activity that will receive your 5470 * reply, or null if none. 5471 */ 5472 @Nullable 5473 public ComponentName getCallingActivity() { 5474 try { 5475 return ActivityManager.getService().getCallingActivity(mToken); 5476 } catch (RemoteException e) { 5477 return null; 5478 } 5479 } 5480 5481 /** 5482 * Control whether this activity's main window is visible. This is intended 5483 * only for the special case of an activity that is not going to show a 5484 * UI itself, but can't just finish prior to onResume() because it needs 5485 * to wait for a service binding or such. Setting this to false allows 5486 * you to prevent your UI from being shown during that time. 5487 * 5488 * <p>The default value for this is taken from the 5489 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5490 */ 5491 public void setVisible(boolean visible) { 5492 if (mVisibleFromClient != visible) { 5493 mVisibleFromClient = visible; 5494 if (mVisibleFromServer) { 5495 if (visible) makeVisible(); 5496 else mDecor.setVisibility(View.INVISIBLE); 5497 } 5498 } 5499 } 5500 5501 void makeVisible() { 5502 if (!mWindowAdded) { 5503 ViewManager wm = getWindowManager(); 5504 wm.addView(mDecor, getWindow().getAttributes()); 5505 mWindowAdded = true; 5506 } 5507 mDecor.setVisibility(View.VISIBLE); 5508 } 5509 5510 /** 5511 * Check to see whether this activity is in the process of finishing, 5512 * either because you called {@link #finish} on it or someone else 5513 * has requested that it finished. This is often used in 5514 * {@link #onPause} to determine whether the activity is simply pausing or 5515 * completely finishing. 5516 * 5517 * @return If the activity is finishing, returns true; else returns false. 5518 * 5519 * @see #finish 5520 */ 5521 public boolean isFinishing() { 5522 return mFinished; 5523 } 5524 5525 /** 5526 * Returns true if the final {@link #onDestroy()} call has been made 5527 * on the Activity, so this instance is now dead. 5528 */ 5529 public boolean isDestroyed() { 5530 return mDestroyed; 5531 } 5532 5533 /** 5534 * Check to see whether this activity is in the process of being destroyed in order to be 5535 * recreated with a new configuration. This is often used in 5536 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5537 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5538 * 5539 * @return If the activity is being torn down in order to be recreated with a new configuration, 5540 * returns true; else returns false. 5541 */ 5542 public boolean isChangingConfigurations() { 5543 return mChangingConfigurations; 5544 } 5545 5546 /** 5547 * Cause this Activity to be recreated with a new instance. This results 5548 * in essentially the same flow as when the Activity is created due to 5549 * a configuration change -- the current instance will go through its 5550 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5551 */ 5552 public void recreate() { 5553 if (mParent != null) { 5554 throw new IllegalStateException("Can only be called on top-level activity"); 5555 } 5556 if (Looper.myLooper() != mMainThread.getLooper()) { 5557 throw new IllegalStateException("Must be called from main thread"); 5558 } 5559 try { 5560 ActivityManager.getService().requestActivityRelaunch(mToken); 5561 } catch (RemoteException e) { 5562 } 5563 } 5564 5565 /** 5566 * Finishes the current activity and specifies whether to remove the task associated with this 5567 * activity. 5568 */ 5569 private void finish(int finishTask) { 5570 if (mParent == null) { 5571 int resultCode; 5572 Intent resultData; 5573 synchronized (this) { 5574 resultCode = mResultCode; 5575 resultData = mResultData; 5576 } 5577 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5578 try { 5579 if (resultData != null) { 5580 resultData.prepareToLeaveProcess(this); 5581 } 5582 if (ActivityManager.getService() 5583 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5584 mFinished = true; 5585 } 5586 } catch (RemoteException e) { 5587 // Empty 5588 } 5589 } else { 5590 mParent.finishFromChild(this); 5591 } 5592 5593 // Activity was launched when user tapped a link in the Autofill Save UI - Save UI must 5594 // be restored now. 5595 if (mIntent != null && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 5596 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_RESTORE, 5597 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 5598 } 5599 } 5600 5601 /** 5602 * Call this when your activity is done and should be closed. The 5603 * ActivityResult is propagated back to whoever launched you via 5604 * onActivityResult(). 5605 */ 5606 public void finish() { 5607 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5608 } 5609 5610 /** 5611 * Finish this activity as well as all activities immediately below it 5612 * in the current task that have the same affinity. This is typically 5613 * used when an application can be launched on to another task (such as 5614 * from an ACTION_VIEW of a content type it understands) and the user 5615 * has used the up navigation to switch out of the current task and in 5616 * to its own task. In this case, if the user has navigated down into 5617 * any other activities of the second application, all of those should 5618 * be removed from the original task as part of the task switch. 5619 * 5620 * <p>Note that this finish does <em>not</em> allow you to deliver results 5621 * to the previous activity, and an exception will be thrown if you are trying 5622 * to do so.</p> 5623 */ 5624 public void finishAffinity() { 5625 if (mParent != null) { 5626 throw new IllegalStateException("Can not be called from an embedded activity"); 5627 } 5628 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5629 throw new IllegalStateException("Can not be called to deliver a result"); 5630 } 5631 try { 5632 if (ActivityManager.getService().finishActivityAffinity(mToken)) { 5633 mFinished = true; 5634 } 5635 } catch (RemoteException e) { 5636 // Empty 5637 } 5638 } 5639 5640 /** 5641 * This is called when a child activity of this one calls its 5642 * {@link #finish} method. The default implementation simply calls 5643 * finish() on this activity (the parent), finishing the entire group. 5644 * 5645 * @param child The activity making the call. 5646 * 5647 * @see #finish 5648 */ 5649 public void finishFromChild(Activity child) { 5650 finish(); 5651 } 5652 5653 /** 5654 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5655 * to reverse its exit Transition. When the exit Transition completes, 5656 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5657 * immediately and the Activity exit Transition is run. 5658 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5659 */ 5660 public void finishAfterTransition() { 5661 if (!mActivityTransitionState.startExitBackTransition(this)) { 5662 finish(); 5663 } 5664 } 5665 5666 /** 5667 * Force finish another activity that you had previously started with 5668 * {@link #startActivityForResult}. 5669 * 5670 * @param requestCode The request code of the activity that you had 5671 * given to startActivityForResult(). If there are multiple 5672 * activities started with this request code, they 5673 * will all be finished. 5674 */ 5675 public void finishActivity(int requestCode) { 5676 if (mParent == null) { 5677 try { 5678 ActivityManager.getService() 5679 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5680 } catch (RemoteException e) { 5681 // Empty 5682 } 5683 } else { 5684 mParent.finishActivityFromChild(this, requestCode); 5685 } 5686 } 5687 5688 /** 5689 * This is called when a child activity of this one calls its 5690 * finishActivity(). 5691 * 5692 * @param child The activity making the call. 5693 * @param requestCode Request code that had been used to start the 5694 * activity. 5695 */ 5696 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5697 try { 5698 ActivityManager.getService() 5699 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5700 } catch (RemoteException e) { 5701 // Empty 5702 } 5703 } 5704 5705 /** 5706 * Call this when your activity is done and should be closed and the task should be completely 5707 * removed as a part of finishing the root activity of the task. 5708 */ 5709 public void finishAndRemoveTask() { 5710 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5711 } 5712 5713 /** 5714 * Ask that the local app instance of this activity be released to free up its memory. 5715 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5716 * a new instance of the activity will later be re-created if needed due to the user 5717 * navigating back to it. 5718 * 5719 * @return Returns true if the activity was in a state that it has started the process 5720 * of destroying its current instance; returns false if for any reason this could not 5721 * be done: it is currently visible to the user, it is already being destroyed, it is 5722 * being finished, it hasn't yet saved its state, etc. 5723 */ 5724 public boolean releaseInstance() { 5725 try { 5726 return ActivityManager.getService().releaseActivityInstance(mToken); 5727 } catch (RemoteException e) { 5728 // Empty 5729 } 5730 return false; 5731 } 5732 5733 /** 5734 * Called when an activity you launched exits, giving you the requestCode 5735 * you started it with, the resultCode it returned, and any additional 5736 * data from it. The <var>resultCode</var> will be 5737 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5738 * didn't return any result, or crashed during its operation. 5739 * 5740 * <p>You will receive this call immediately before onResume() when your 5741 * activity is re-starting. 5742 * 5743 * <p>This method is never invoked if your activity sets 5744 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5745 * <code>true</code>. 5746 * 5747 * @param requestCode The integer request code originally supplied to 5748 * startActivityForResult(), allowing you to identify who this 5749 * result came from. 5750 * @param resultCode The integer result code returned by the child activity 5751 * through its setResult(). 5752 * @param data An Intent, which can return result data to the caller 5753 * (various data can be attached to Intent "extras"). 5754 * 5755 * @see #startActivityForResult 5756 * @see #createPendingResult 5757 * @see #setResult(int) 5758 */ 5759 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5760 } 5761 5762 /** 5763 * Called when an activity you launched with an activity transition exposes this 5764 * Activity through a returning activity transition, giving you the resultCode 5765 * and any additional data from it. This method will only be called if the activity 5766 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5767 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5768 * 5769 * <p>The purpose of this function is to let the called Activity send a hint about 5770 * its state so that this underlying Activity can prepare to be exposed. A call to 5771 * this method does not guarantee that the called Activity has or will be exiting soon. 5772 * It only indicates that it will expose this Activity's Window and it has 5773 * some data to pass to prepare it.</p> 5774 * 5775 * @param resultCode The integer result code returned by the child activity 5776 * through its setResult(). 5777 * @param data An Intent, which can return result data to the caller 5778 * (various data can be attached to Intent "extras"). 5779 */ 5780 public void onActivityReenter(int resultCode, Intent data) { 5781 } 5782 5783 /** 5784 * Create a new PendingIntent object which you can hand to others 5785 * for them to use to send result data back to your 5786 * {@link #onActivityResult} callback. The created object will be either 5787 * one-shot (becoming invalid after a result is sent back) or multiple 5788 * (allowing any number of results to be sent through it). 5789 * 5790 * @param requestCode Private request code for the sender that will be 5791 * associated with the result data when it is returned. The sender can not 5792 * modify this value, allowing you to identify incoming results. 5793 * @param data Default data to supply in the result, which may be modified 5794 * by the sender. 5795 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5796 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5797 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5798 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5799 * or any of the flags as supported by 5800 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5801 * of the intent that can be supplied when the actual send happens. 5802 * 5803 * @return Returns an existing or new PendingIntent matching the given 5804 * parameters. May return null only if 5805 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5806 * supplied. 5807 * 5808 * @see PendingIntent 5809 */ 5810 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5811 @PendingIntent.Flags int flags) { 5812 String packageName = getPackageName(); 5813 try { 5814 data.prepareToLeaveProcess(this); 5815 IIntentSender target = 5816 ActivityManager.getService().getIntentSender( 5817 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5818 mParent == null ? mToken : mParent.mToken, 5819 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5820 getUserId()); 5821 return target != null ? new PendingIntent(target) : null; 5822 } catch (RemoteException e) { 5823 // Empty 5824 } 5825 return null; 5826 } 5827 5828 /** 5829 * Change the desired orientation of this activity. If the activity 5830 * is currently in the foreground or otherwise impacting the screen 5831 * orientation, the screen will immediately be changed (possibly causing 5832 * the activity to be restarted). Otherwise, this will be used the next 5833 * time the activity is visible. 5834 * 5835 * @param requestedOrientation An orientation constant as used in 5836 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5837 */ 5838 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5839 if (mParent == null) { 5840 try { 5841 ActivityManager.getService().setRequestedOrientation( 5842 mToken, requestedOrientation); 5843 } catch (RemoteException e) { 5844 // Empty 5845 } 5846 } else { 5847 mParent.setRequestedOrientation(requestedOrientation); 5848 } 5849 } 5850 5851 /** 5852 * Return the current requested orientation of the activity. This will 5853 * either be the orientation requested in its component's manifest, or 5854 * the last requested orientation given to 5855 * {@link #setRequestedOrientation(int)}. 5856 * 5857 * @return Returns an orientation constant as used in 5858 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5859 */ 5860 @ActivityInfo.ScreenOrientation 5861 public int getRequestedOrientation() { 5862 if (mParent == null) { 5863 try { 5864 return ActivityManager.getService() 5865 .getRequestedOrientation(mToken); 5866 } catch (RemoteException e) { 5867 // Empty 5868 } 5869 } else { 5870 return mParent.getRequestedOrientation(); 5871 } 5872 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5873 } 5874 5875 /** 5876 * Return the identifier of the task this activity is in. This identifier 5877 * will remain the same for the lifetime of the activity. 5878 * 5879 * @return Task identifier, an opaque integer. 5880 */ 5881 public int getTaskId() { 5882 try { 5883 return ActivityManager.getService() 5884 .getTaskForActivity(mToken, false); 5885 } catch (RemoteException e) { 5886 return -1; 5887 } 5888 } 5889 5890 /** 5891 * Return whether this activity is the root of a task. The root is the 5892 * first activity in a task. 5893 * 5894 * @return True if this is the root activity, else false. 5895 */ 5896 @Override 5897 public boolean isTaskRoot() { 5898 try { 5899 return ActivityManager.getService().getTaskForActivity(mToken, true) >= 0; 5900 } catch (RemoteException e) { 5901 return false; 5902 } 5903 } 5904 5905 /** 5906 * Move the task containing this activity to the back of the activity 5907 * stack. The activity's order within the task is unchanged. 5908 * 5909 * @param nonRoot If false then this only works if the activity is the root 5910 * of a task; if true it will work for any activity in 5911 * a task. 5912 * 5913 * @return If the task was moved (or it was already at the 5914 * back) true is returned, else false. 5915 */ 5916 public boolean moveTaskToBack(boolean nonRoot) { 5917 try { 5918 return ActivityManager.getService().moveActivityTaskToBack( 5919 mToken, nonRoot); 5920 } catch (RemoteException e) { 5921 // Empty 5922 } 5923 return false; 5924 } 5925 5926 /** 5927 * Returns class name for this activity with the package prefix removed. 5928 * This is the default name used to read and write settings. 5929 * 5930 * @return The local class name. 5931 */ 5932 @NonNull 5933 public String getLocalClassName() { 5934 final String pkg = getPackageName(); 5935 final String cls = mComponent.getClassName(); 5936 int packageLen = pkg.length(); 5937 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5938 || cls.charAt(packageLen) != '.') { 5939 return cls; 5940 } 5941 return cls.substring(packageLen+1); 5942 } 5943 5944 /** 5945 * Returns the complete component name of this activity. 5946 * 5947 * @return Returns the complete component name for this activity 5948 */ 5949 public ComponentName getComponentName() { 5950 return mComponent; 5951 } 5952 5953 /** @hide */ 5954 @Override 5955 public final ComponentName autofillClientGetComponentName() { 5956 return getComponentName(); 5957 } 5958 5959 /** 5960 * Retrieve a {@link SharedPreferences} object for accessing preferences 5961 * that are private to this activity. This simply calls the underlying 5962 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5963 * class name as the preferences name. 5964 * 5965 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5966 * operation. 5967 * 5968 * @return Returns the single SharedPreferences instance that can be used 5969 * to retrieve and modify the preference values. 5970 */ 5971 public SharedPreferences getPreferences(@Context.PreferencesMode int mode) { 5972 return getSharedPreferences(getLocalClassName(), mode); 5973 } 5974 5975 private void ensureSearchManager() { 5976 if (mSearchManager != null) { 5977 return; 5978 } 5979 5980 try { 5981 mSearchManager = new SearchManager(this, null); 5982 } catch (ServiceNotFoundException e) { 5983 throw new IllegalStateException(e); 5984 } 5985 } 5986 5987 @Override 5988 public Object getSystemService(@ServiceName @NonNull String name) { 5989 if (getBaseContext() == null) { 5990 throw new IllegalStateException( 5991 "System services not available to Activities before onCreate()"); 5992 } 5993 5994 if (WINDOW_SERVICE.equals(name)) { 5995 return mWindowManager; 5996 } else if (SEARCH_SERVICE.equals(name)) { 5997 ensureSearchManager(); 5998 return mSearchManager; 5999 } 6000 return super.getSystemService(name); 6001 } 6002 6003 /** 6004 * Change the title associated with this activity. If this is a 6005 * top-level activity, the title for its window will change. If it 6006 * is an embedded activity, the parent can do whatever it wants 6007 * with it. 6008 */ 6009 public void setTitle(CharSequence title) { 6010 mTitle = title; 6011 onTitleChanged(title, mTitleColor); 6012 6013 if (mParent != null) { 6014 mParent.onChildTitleChanged(this, title); 6015 } 6016 } 6017 6018 /** 6019 * Change the title associated with this activity. If this is a 6020 * top-level activity, the title for its window will change. If it 6021 * is an embedded activity, the parent can do whatever it wants 6022 * with it. 6023 */ 6024 public void setTitle(int titleId) { 6025 setTitle(getText(titleId)); 6026 } 6027 6028 /** 6029 * Change the color of the title associated with this activity. 6030 * <p> 6031 * This method is deprecated starting in API Level 11 and replaced by action 6032 * bar styles. For information on styling the Action Bar, read the <a 6033 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 6034 * guide. 6035 * 6036 * @deprecated Use action bar styles instead. 6037 */ 6038 @Deprecated 6039 public void setTitleColor(int textColor) { 6040 mTitleColor = textColor; 6041 onTitleChanged(mTitle, textColor); 6042 } 6043 6044 public final CharSequence getTitle() { 6045 return mTitle; 6046 } 6047 6048 public final int getTitleColor() { 6049 return mTitleColor; 6050 } 6051 6052 protected void onTitleChanged(CharSequence title, int color) { 6053 if (mTitleReady) { 6054 final Window win = getWindow(); 6055 if (win != null) { 6056 win.setTitle(title); 6057 if (color != 0) { 6058 win.setTitleColor(color); 6059 } 6060 } 6061 if (mActionBar != null) { 6062 mActionBar.setWindowTitle(title); 6063 } 6064 } 6065 } 6066 6067 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 6068 } 6069 6070 /** 6071 * Sets information describing the task with this activity for presentation inside the Recents 6072 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 6073 * are traversed in order from the topmost activity to the bottommost. The traversal continues 6074 * for each property until a suitable value is found. For each task the taskDescription will be 6075 * returned in {@link android.app.ActivityManager.TaskDescription}. 6076 * 6077 * @see ActivityManager#getRecentTasks 6078 * @see android.app.ActivityManager.TaskDescription 6079 * 6080 * @param taskDescription The TaskDescription properties that describe the task with this activity 6081 */ 6082 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 6083 if (mTaskDescription != taskDescription) { 6084 mTaskDescription.copyFromPreserveHiddenFields(taskDescription); 6085 // Scale the icon down to something reasonable if it is provided 6086 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 6087 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 6088 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, 6089 true); 6090 mTaskDescription.setIcon(icon); 6091 } 6092 } 6093 try { 6094 ActivityManager.getService().setTaskDescription(mToken, mTaskDescription); 6095 } catch (RemoteException e) { 6096 } 6097 } 6098 6099 /** 6100 * Sets the visibility of the progress bar in the title. 6101 * <p> 6102 * In order for the progress bar to be shown, the feature must be requested 6103 * via {@link #requestWindowFeature(int)}. 6104 * 6105 * @param visible Whether to show the progress bars in the title. 6106 * @deprecated No longer supported starting in API 21. 6107 */ 6108 @Deprecated 6109 public final void setProgressBarVisibility(boolean visible) { 6110 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 6111 Window.PROGRESS_VISIBILITY_OFF); 6112 } 6113 6114 /** 6115 * Sets the visibility of the indeterminate progress bar in the title. 6116 * <p> 6117 * In order for the progress bar to be shown, the feature must be requested 6118 * via {@link #requestWindowFeature(int)}. 6119 * 6120 * @param visible Whether to show the progress bars in the title. 6121 * @deprecated No longer supported starting in API 21. 6122 */ 6123 @Deprecated 6124 public final void setProgressBarIndeterminateVisibility(boolean visible) { 6125 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 6126 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 6127 } 6128 6129 /** 6130 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 6131 * is always indeterminate). 6132 * <p> 6133 * In order for the progress bar to be shown, the feature must be requested 6134 * via {@link #requestWindowFeature(int)}. 6135 * 6136 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 6137 * @deprecated No longer supported starting in API 21. 6138 */ 6139 @Deprecated 6140 public final void setProgressBarIndeterminate(boolean indeterminate) { 6141 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6142 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 6143 : Window.PROGRESS_INDETERMINATE_OFF); 6144 } 6145 6146 /** 6147 * Sets the progress for the progress bars in the title. 6148 * <p> 6149 * In order for the progress bar to be shown, the feature must be requested 6150 * via {@link #requestWindowFeature(int)}. 6151 * 6152 * @param progress The progress for the progress bar. Valid ranges are from 6153 * 0 to 10000 (both inclusive). If 10000 is given, the progress 6154 * bar will be completely filled and will fade out. 6155 * @deprecated No longer supported starting in API 21. 6156 */ 6157 @Deprecated 6158 public final void setProgress(int progress) { 6159 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 6160 } 6161 6162 /** 6163 * Sets the secondary progress for the progress bar in the title. This 6164 * progress is drawn between the primary progress (set via 6165 * {@link #setProgress(int)} and the background. It can be ideal for media 6166 * scenarios such as showing the buffering progress while the default 6167 * progress shows the play progress. 6168 * <p> 6169 * In order for the progress bar to be shown, the feature must be requested 6170 * via {@link #requestWindowFeature(int)}. 6171 * 6172 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 6173 * 0 to 10000 (both inclusive). 6174 * @deprecated No longer supported starting in API 21. 6175 */ 6176 @Deprecated 6177 public final void setSecondaryProgress(int secondaryProgress) { 6178 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6179 secondaryProgress + Window.PROGRESS_SECONDARY_START); 6180 } 6181 6182 /** 6183 * Suggests an audio stream whose volume should be changed by the hardware 6184 * volume controls. 6185 * <p> 6186 * The suggested audio stream will be tied to the window of this Activity. 6187 * Volume requests which are received while the Activity is in the 6188 * foreground will affect this stream. 6189 * <p> 6190 * It is not guaranteed that the hardware volume controls will always change 6191 * this stream's volume (for example, if a call is in progress, its stream's 6192 * volume may be changed instead). To reset back to the default, use 6193 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 6194 * 6195 * @param streamType The type of the audio stream whose volume should be 6196 * changed by the hardware volume controls. 6197 */ 6198 public final void setVolumeControlStream(int streamType) { 6199 getWindow().setVolumeControlStream(streamType); 6200 } 6201 6202 /** 6203 * Gets the suggested audio stream whose volume should be changed by the 6204 * hardware volume controls. 6205 * 6206 * @return The suggested audio stream type whose volume should be changed by 6207 * the hardware volume controls. 6208 * @see #setVolumeControlStream(int) 6209 */ 6210 public final int getVolumeControlStream() { 6211 return getWindow().getVolumeControlStream(); 6212 } 6213 6214 /** 6215 * Sets a {@link MediaController} to send media keys and volume changes to. 6216 * <p> 6217 * The controller will be tied to the window of this Activity. Media key and 6218 * volume events which are received while the Activity is in the foreground 6219 * will be forwarded to the controller and used to invoke transport controls 6220 * or adjust the volume. This may be used instead of or in addition to 6221 * {@link #setVolumeControlStream} to affect a specific session instead of a 6222 * specific stream. 6223 * <p> 6224 * It is not guaranteed that the hardware volume controls will always change 6225 * this session's volume (for example, if a call is in progress, its 6226 * stream's volume may be changed instead). To reset back to the default use 6227 * null as the controller. 6228 * 6229 * @param controller The controller for the session which should receive 6230 * media keys and volume changes. 6231 */ 6232 public final void setMediaController(MediaController controller) { 6233 getWindow().setMediaController(controller); 6234 } 6235 6236 /** 6237 * Gets the controller which should be receiving media key and volume events 6238 * while this activity is in the foreground. 6239 * 6240 * @return The controller which should receive events. 6241 * @see #setMediaController(android.media.session.MediaController) 6242 */ 6243 public final MediaController getMediaController() { 6244 return getWindow().getMediaController(); 6245 } 6246 6247 /** 6248 * Runs the specified action on the UI thread. If the current thread is the UI 6249 * thread, then the action is executed immediately. If the current thread is 6250 * not the UI thread, the action is posted to the event queue of the UI thread. 6251 * 6252 * @param action the action to run on the UI thread 6253 */ 6254 public final void runOnUiThread(Runnable action) { 6255 if (Thread.currentThread() != mUiThread) { 6256 mHandler.post(action); 6257 } else { 6258 action.run(); 6259 } 6260 } 6261 6262 /** @hide */ 6263 @Override 6264 public final void autofillClientRunOnUiThread(Runnable action) { 6265 runOnUiThread(action); 6266 } 6267 6268 /** 6269 * Standard implementation of 6270 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 6271 * inflating with the LayoutInflater returned by {@link #getSystemService}. 6272 * This implementation does nothing and is for 6273 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 6274 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 6275 * 6276 * @see android.view.LayoutInflater#createView 6277 * @see android.view.Window#getLayoutInflater 6278 */ 6279 @Nullable 6280 public View onCreateView(String name, Context context, AttributeSet attrs) { 6281 return null; 6282 } 6283 6284 /** 6285 * Standard implementation of 6286 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 6287 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 6288 * This implementation handles <fragment> tags to embed fragments inside 6289 * of the activity. 6290 * 6291 * @see android.view.LayoutInflater#createView 6292 * @see android.view.Window#getLayoutInflater 6293 */ 6294 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 6295 if (!"fragment".equals(name)) { 6296 return onCreateView(name, context, attrs); 6297 } 6298 6299 return mFragments.onCreateView(parent, name, context, attrs); 6300 } 6301 6302 /** 6303 * Print the Activity's state into the given stream. This gets invoked if 6304 * you run "adb shell dumpsys activity <activity_component_name>". 6305 * 6306 * @param prefix Desired prefix to prepend at each line of output. 6307 * @param fd The raw file descriptor that the dump is being sent to. 6308 * @param writer The PrintWriter to which you should dump your state. This will be 6309 * closed for you after you return. 6310 * @param args additional arguments to the dump request. 6311 */ 6312 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6313 dumpInner(prefix, fd, writer, args); 6314 } 6315 6316 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6317 writer.print(prefix); writer.print("Local Activity "); 6318 writer.print(Integer.toHexString(System.identityHashCode(this))); 6319 writer.println(" State:"); 6320 String innerPrefix = prefix + " "; 6321 writer.print(innerPrefix); writer.print("mResumed="); 6322 writer.print(mResumed); writer.print(" mStopped="); 6323 writer.print(mStopped); writer.print(" mFinished="); 6324 writer.println(mFinished); 6325 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 6326 writer.println(mChangingConfigurations); 6327 writer.print(innerPrefix); writer.print("mCurrentConfig="); 6328 writer.println(mCurrentConfig); 6329 6330 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 6331 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 6332 if (mVoiceInteractor != null) { 6333 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 6334 } 6335 6336 if (getWindow() != null && 6337 getWindow().peekDecorView() != null && 6338 getWindow().peekDecorView().getViewRootImpl() != null) { 6339 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 6340 } 6341 6342 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 6343 6344 final AutofillManager afm = getAutofillManager(); 6345 if (afm != null) { 6346 afm.dump(prefix, writer); 6347 } else { 6348 writer.print(prefix); writer.println("No AutofillManager"); 6349 } 6350 } 6351 6352 /** 6353 * Bit indicating that this activity is "immersive" and should not be 6354 * interrupted by notifications if possible. 6355 * 6356 * This value is initially set by the manifest property 6357 * <code>android:immersive</code> but may be changed at runtime by 6358 * {@link #setImmersive}. 6359 * 6360 * @see #setImmersive(boolean) 6361 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6362 */ 6363 public boolean isImmersive() { 6364 try { 6365 return ActivityManager.getService().isImmersive(mToken); 6366 } catch (RemoteException e) { 6367 return false; 6368 } 6369 } 6370 6371 /** 6372 * Indication of whether this is the highest level activity in this task. Can be used to 6373 * determine whether an activity launched by this activity was placed in the same task or 6374 * another task. 6375 * 6376 * @return true if this is the topmost, non-finishing activity in its task. 6377 */ 6378 private boolean isTopOfTask() { 6379 if (mToken == null || mWindow == null) { 6380 return false; 6381 } 6382 try { 6383 return ActivityManager.getService().isTopOfTask(getActivityToken()); 6384 } catch (RemoteException e) { 6385 return false; 6386 } 6387 } 6388 6389 /** 6390 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 6391 * fullscreen opaque Activity. 6392 * <p> 6393 * Call this whenever the background of a translucent Activity has changed to become opaque. 6394 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 6395 * <p> 6396 * This call has no effect on non-translucent activities or on activities with the 6397 * {@link android.R.attr#windowIsFloating} attribute. 6398 * 6399 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6400 * ActivityOptions) 6401 * @see TranslucentConversionListener 6402 * 6403 * @hide 6404 */ 6405 @SystemApi 6406 public void convertFromTranslucent() { 6407 try { 6408 mTranslucentCallback = null; 6409 if (ActivityManager.getService().convertFromTranslucent(mToken)) { 6410 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 6411 } 6412 } catch (RemoteException e) { 6413 // pass 6414 } 6415 } 6416 6417 /** 6418 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 6419 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 6420 * <p> 6421 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 6422 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 6423 * be called indicating that it is safe to make this activity translucent again. Until 6424 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 6425 * behind the frontmost Activity will be indeterminate. 6426 * <p> 6427 * This call has no effect on non-translucent activities or on activities with the 6428 * {@link android.R.attr#windowIsFloating} attribute. 6429 * 6430 * @param callback the method to call when all visible Activities behind this one have been 6431 * drawn and it is safe to make this Activity translucent again. 6432 * @param options activity options delivered to the activity below this one. The options 6433 * are retrieved using {@link #getActivityOptions}. 6434 * @return <code>true</code> if Window was opaque and will become translucent or 6435 * <code>false</code> if window was translucent and no change needed to be made. 6436 * 6437 * @see #convertFromTranslucent() 6438 * @see TranslucentConversionListener 6439 * 6440 * @hide 6441 */ 6442 @SystemApi 6443 public boolean convertToTranslucent(TranslucentConversionListener callback, 6444 ActivityOptions options) { 6445 boolean drawComplete; 6446 try { 6447 mTranslucentCallback = callback; 6448 mChangeCanvasToTranslucent = ActivityManager.getService().convertToTranslucent( 6449 mToken, options == null ? null : options.toBundle()); 6450 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6451 drawComplete = true; 6452 } catch (RemoteException e) { 6453 // Make callback return as though it timed out. 6454 mChangeCanvasToTranslucent = false; 6455 drawComplete = false; 6456 } 6457 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 6458 // Window is already translucent. 6459 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6460 } 6461 return mChangeCanvasToTranslucent; 6462 } 6463 6464 /** @hide */ 6465 void onTranslucentConversionComplete(boolean drawComplete) { 6466 if (mTranslucentCallback != null) { 6467 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6468 mTranslucentCallback = null; 6469 } 6470 if (mChangeCanvasToTranslucent) { 6471 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6472 } 6473 } 6474 6475 /** @hide */ 6476 public void onNewActivityOptions(ActivityOptions options) { 6477 mActivityTransitionState.setEnterActivityOptions(this, options); 6478 if (!mStopped) { 6479 mActivityTransitionState.enterReady(this); 6480 } 6481 } 6482 6483 /** 6484 * Retrieve the ActivityOptions passed in from the launching activity or passed back 6485 * from an activity launched by this activity in its call to {@link 6486 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 6487 * 6488 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6489 * @hide 6490 */ 6491 ActivityOptions getActivityOptions() { 6492 try { 6493 return ActivityOptions.fromBundle( 6494 ActivityManager.getService().getActivityOptions(mToken)); 6495 } catch (RemoteException e) { 6496 } 6497 return null; 6498 } 6499 6500 /** 6501 * Activities that want to remain visible behind a translucent activity above them must call 6502 * this method anytime between the start of {@link #onResume()} and the return from 6503 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6504 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6505 * 6506 * <p>The actions of this call are reset each time that this activity is brought to the 6507 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6508 * to not have requested visible behind. Therefore, if you want this activity to continue to 6509 * be visible in the background you must call this method again. 6510 * 6511 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6512 * for dialog and translucent activities. 6513 * 6514 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6515 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6516 * 6517 * <p>False will be returned any time this method is called between the return of onPause and 6518 * the next call to onResume. 6519 * 6520 * @deprecated This method's functionality is no longer supported as of 6521 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6522 * 6523 * @param visible true to notify the system that the activity wishes to be visible behind other 6524 * translucent activities, false to indicate otherwise. Resources must be 6525 * released when passing false to this method. 6526 * 6527 * @return the resulting visibiity state. If true the activity will remain visible beyond 6528 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6529 * then the activity may not count on being visible behind other translucent activities, 6530 * and must stop any media playback and release resources. 6531 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6532 * the return value must be checked. 6533 * 6534 * @see #onVisibleBehindCanceled() 6535 */ 6536 @Deprecated 6537 public boolean requestVisibleBehind(boolean visible) { 6538 return false; 6539 } 6540 6541 /** 6542 * Called when a translucent activity over this activity is becoming opaque or another 6543 * activity is being launched. Activities that override this method must call 6544 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6545 * 6546 * <p>When this method is called the activity has 500 msec to release any resources it may be 6547 * using while visible in the background. 6548 * If the activity has not returned from this method in 500 msec the system will destroy 6549 * the activity and kill the process in order to recover the resources for another 6550 * process. Otherwise {@link #onStop()} will be called following return. 6551 * 6552 * @see #requestVisibleBehind(boolean) 6553 * 6554 * @deprecated This method's functionality is no longer supported as of 6555 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6556 */ 6557 @Deprecated 6558 @CallSuper 6559 public void onVisibleBehindCanceled() { 6560 mCalled = true; 6561 } 6562 6563 /** 6564 * Translucent activities may call this to determine if there is an activity below them that 6565 * is currently set to be visible in the background. 6566 * 6567 * @deprecated This method's functionality is no longer supported as of 6568 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6569 * 6570 * @return true if an activity below is set to visible according to the most recent call to 6571 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6572 * 6573 * @see #requestVisibleBehind(boolean) 6574 * @see #onVisibleBehindCanceled() 6575 * @see #onBackgroundVisibleBehindChanged(boolean) 6576 * @hide 6577 */ 6578 @Deprecated 6579 @SystemApi 6580 public boolean isBackgroundVisibleBehind() { 6581 return false; 6582 } 6583 6584 /** 6585 * The topmost foreground activity will receive this call when the background visibility state 6586 * of the activity below it changes. 6587 * 6588 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6589 * due to a background activity finishing itself. 6590 * 6591 * @deprecated This method's functionality is no longer supported as of 6592 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6593 * 6594 * @param visible true if a background activity is visible, false otherwise. 6595 * 6596 * @see #requestVisibleBehind(boolean) 6597 * @see #onVisibleBehindCanceled() 6598 * @hide 6599 */ 6600 @Deprecated 6601 @SystemApi 6602 public void onBackgroundVisibleBehindChanged(boolean visible) { 6603 } 6604 6605 /** 6606 * Activities cannot draw during the period that their windows are animating in. In order 6607 * to know when it is safe to begin drawing they can override this method which will be 6608 * called when the entering animation has completed. 6609 */ 6610 public void onEnterAnimationComplete() { 6611 } 6612 6613 /** 6614 * @hide 6615 */ 6616 public void dispatchEnterAnimationComplete() { 6617 onEnterAnimationComplete(); 6618 if (getWindow() != null && getWindow().getDecorView() != null) { 6619 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6620 } 6621 } 6622 6623 /** 6624 * Adjust the current immersive mode setting. 6625 * 6626 * Note that changing this value will have no effect on the activity's 6627 * {@link android.content.pm.ActivityInfo} structure; that is, if 6628 * <code>android:immersive</code> is set to <code>true</code> 6629 * in the application's manifest entry for this activity, the {@link 6630 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6631 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6632 * FLAG_IMMERSIVE} bit set. 6633 * 6634 * @see #isImmersive() 6635 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6636 */ 6637 public void setImmersive(boolean i) { 6638 try { 6639 ActivityManager.getService().setImmersive(mToken, i); 6640 } catch (RemoteException e) { 6641 // pass 6642 } 6643 } 6644 6645 /** 6646 * Enable or disable virtual reality (VR) mode for this Activity. 6647 * 6648 * <p>VR mode is a hint to Android system to switch to a mode optimized for VR applications 6649 * while this Activity has user focus.</p> 6650 * 6651 * <p>It is recommended that applications additionally declare 6652 * {@link android.R.attr#enableVrMode} in their manifest to allow for smooth activity 6653 * transitions when switching between VR activities.</p> 6654 * 6655 * <p>If the requested {@link android.service.vr.VrListenerService} component is not available, 6656 * VR mode will not be started. Developers can handle this case as follows:</p> 6657 * 6658 * <pre> 6659 * String servicePackage = "com.whatever.app"; 6660 * String serviceClass = "com.whatever.app.MyVrListenerService"; 6661 * 6662 * // Name of the component of the VrListenerService to start. 6663 * ComponentName serviceComponent = new ComponentName(servicePackage, serviceClass); 6664 * 6665 * try { 6666 * setVrModeEnabled(true, myComponentName); 6667 * } catch (PackageManager.NameNotFoundException e) { 6668 * List<ApplicationInfo> installed = getPackageManager().getInstalledApplications(0); 6669 * boolean isInstalled = false; 6670 * for (ApplicationInfo app : installed) { 6671 * if (app.packageName.equals(servicePackage)) { 6672 * isInstalled = true; 6673 * break; 6674 * } 6675 * } 6676 * if (isInstalled) { 6677 * // Package is installed, but not enabled in Settings. Let user enable it. 6678 * startActivity(new Intent(Settings.ACTION_VR_LISTENER_SETTINGS)); 6679 * } else { 6680 * // Package is not installed. Send an intent to download this. 6681 * sentIntentToLaunchAppStore(servicePackage); 6682 * } 6683 * } 6684 * </pre> 6685 * 6686 * @param enabled {@code true} to enable this mode. 6687 * @param requestedComponent the name of the component to use as a 6688 * {@link android.service.vr.VrListenerService} while VR mode is enabled. 6689 * 6690 * @throws android.content.pm.PackageManager.NameNotFoundException if the given component 6691 * to run as a {@link android.service.vr.VrListenerService} is not installed, or has 6692 * not been enabled in user settings. 6693 * 6694 * @see android.content.pm.PackageManager#FEATURE_VR_MODE_HIGH_PERFORMANCE 6695 * @see android.service.vr.VrListenerService 6696 * @see android.provider.Settings#ACTION_VR_LISTENER_SETTINGS 6697 * @see android.R.attr#enableVrMode 6698 */ 6699 public void setVrModeEnabled(boolean enabled, @NonNull ComponentName requestedComponent) 6700 throws PackageManager.NameNotFoundException { 6701 try { 6702 if (ActivityManager.getService().setVrMode(mToken, enabled, requestedComponent) 6703 != 0) { 6704 throw new PackageManager.NameNotFoundException( 6705 requestedComponent.flattenToString()); 6706 } 6707 } catch (RemoteException e) { 6708 // pass 6709 } 6710 } 6711 6712 /** 6713 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6714 * 6715 * @param callback Callback that will manage lifecycle events for this action mode 6716 * @return The ActionMode that was started, or null if it was canceled 6717 * 6718 * @see ActionMode 6719 */ 6720 @Nullable 6721 public ActionMode startActionMode(ActionMode.Callback callback) { 6722 return mWindow.getDecorView().startActionMode(callback); 6723 } 6724 6725 /** 6726 * Start an action mode of the given type. 6727 * 6728 * @param callback Callback that will manage lifecycle events for this action mode 6729 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6730 * @return The ActionMode that was started, or null if it was canceled 6731 * 6732 * @see ActionMode 6733 */ 6734 @Nullable 6735 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6736 return mWindow.getDecorView().startActionMode(callback, type); 6737 } 6738 6739 /** 6740 * Give the Activity a chance to control the UI for an action mode requested 6741 * by the system. 6742 * 6743 * <p>Note: If you are looking for a notification callback that an action mode 6744 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6745 * 6746 * @param callback The callback that should control the new action mode 6747 * @return The new action mode, or <code>null</code> if the activity does not want to 6748 * provide special handling for this action mode. (It will be handled by the system.) 6749 */ 6750 @Nullable 6751 @Override 6752 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6753 // Only Primary ActionModes are represented in the ActionBar. 6754 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6755 initWindowDecorActionBar(); 6756 if (mActionBar != null) { 6757 return mActionBar.startActionMode(callback); 6758 } 6759 } 6760 return null; 6761 } 6762 6763 /** 6764 * {@inheritDoc} 6765 */ 6766 @Nullable 6767 @Override 6768 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6769 try { 6770 mActionModeTypeStarting = type; 6771 return onWindowStartingActionMode(callback); 6772 } finally { 6773 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6774 } 6775 } 6776 6777 /** 6778 * Notifies the Activity that an action mode has been started. 6779 * Activity subclasses overriding this method should call the superclass implementation. 6780 * 6781 * @param mode The new action mode. 6782 */ 6783 @CallSuper 6784 @Override 6785 public void onActionModeStarted(ActionMode mode) { 6786 } 6787 6788 /** 6789 * Notifies the activity that an action mode has finished. 6790 * Activity subclasses overriding this method should call the superclass implementation. 6791 * 6792 * @param mode The action mode that just finished. 6793 */ 6794 @CallSuper 6795 @Override 6796 public void onActionModeFinished(ActionMode mode) { 6797 } 6798 6799 /** 6800 * Returns true if the app should recreate the task when navigating 'up' from this activity 6801 * by using targetIntent. 6802 * 6803 * <p>If this method returns false the app can trivially call 6804 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6805 * up navigation. If this method returns false, the app should synthesize a new task stack 6806 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6807 * 6808 * @param targetIntent An intent representing the target destination for up navigation 6809 * @return true if navigating up should recreate a new task stack, false if the same task 6810 * should be used for the destination 6811 */ 6812 public boolean shouldUpRecreateTask(Intent targetIntent) { 6813 try { 6814 PackageManager pm = getPackageManager(); 6815 ComponentName cn = targetIntent.getComponent(); 6816 if (cn == null) { 6817 cn = targetIntent.resolveActivity(pm); 6818 } 6819 ActivityInfo info = pm.getActivityInfo(cn, 0); 6820 if (info.taskAffinity == null) { 6821 return false; 6822 } 6823 return ActivityManager.getService() 6824 .shouldUpRecreateTask(mToken, info.taskAffinity); 6825 } catch (RemoteException e) { 6826 return false; 6827 } catch (NameNotFoundException e) { 6828 return false; 6829 } 6830 } 6831 6832 /** 6833 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6834 * in the process. If the activity indicated by upIntent already exists in the task's history, 6835 * this activity and all others before the indicated activity in the history stack will be 6836 * finished. 6837 * 6838 * <p>If the indicated activity does not appear in the history stack, this will finish 6839 * each activity in this task until the root activity of the task is reached, resulting in 6840 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6841 * when an activity may be reached by a path not passing through a canonical parent 6842 * activity.</p> 6843 * 6844 * <p>This method should be used when performing up navigation from within the same task 6845 * as the destination. If up navigation should cross tasks in some cases, see 6846 * {@link #shouldUpRecreateTask(Intent)}.</p> 6847 * 6848 * @param upIntent An intent representing the target destination for up navigation 6849 * 6850 * @return true if up navigation successfully reached the activity indicated by upIntent and 6851 * upIntent was delivered to it. false if an instance of the indicated activity could 6852 * not be found and this activity was simply finished normally. 6853 */ 6854 public boolean navigateUpTo(Intent upIntent) { 6855 if (mParent == null) { 6856 ComponentName destInfo = upIntent.getComponent(); 6857 if (destInfo == null) { 6858 destInfo = upIntent.resolveActivity(getPackageManager()); 6859 if (destInfo == null) { 6860 return false; 6861 } 6862 upIntent = new Intent(upIntent); 6863 upIntent.setComponent(destInfo); 6864 } 6865 int resultCode; 6866 Intent resultData; 6867 synchronized (this) { 6868 resultCode = mResultCode; 6869 resultData = mResultData; 6870 } 6871 if (resultData != null) { 6872 resultData.prepareToLeaveProcess(this); 6873 } 6874 try { 6875 upIntent.prepareToLeaveProcess(this); 6876 return ActivityManager.getService().navigateUpTo(mToken, upIntent, 6877 resultCode, resultData); 6878 } catch (RemoteException e) { 6879 return false; 6880 } 6881 } else { 6882 return mParent.navigateUpToFromChild(this, upIntent); 6883 } 6884 } 6885 6886 /** 6887 * This is called when a child activity of this one calls its 6888 * {@link #navigateUpTo} method. The default implementation simply calls 6889 * navigateUpTo(upIntent) on this activity (the parent). 6890 * 6891 * @param child The activity making the call. 6892 * @param upIntent An intent representing the target destination for up navigation 6893 * 6894 * @return true if up navigation successfully reached the activity indicated by upIntent and 6895 * upIntent was delivered to it. false if an instance of the indicated activity could 6896 * not be found and this activity was simply finished normally. 6897 */ 6898 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6899 return navigateUpTo(upIntent); 6900 } 6901 6902 /** 6903 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6904 * this activity's logical parent. The logical parent is named in the application's manifest 6905 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6906 * Activity subclasses may override this method to modify the Intent returned by 6907 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6908 * the parent intent entirely. 6909 * 6910 * @return a new Intent targeting the defined parent of this activity or null if 6911 * there is no valid parent. 6912 */ 6913 @Nullable 6914 public Intent getParentActivityIntent() { 6915 final String parentName = mActivityInfo.parentActivityName; 6916 if (TextUtils.isEmpty(parentName)) { 6917 return null; 6918 } 6919 6920 // If the parent itself has no parent, generate a main activity intent. 6921 final ComponentName target = new ComponentName(this, parentName); 6922 try { 6923 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6924 final String parentActivity = parentInfo.parentActivityName; 6925 final Intent parentIntent = parentActivity == null 6926 ? Intent.makeMainActivity(target) 6927 : new Intent().setComponent(target); 6928 return parentIntent; 6929 } catch (NameNotFoundException e) { 6930 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6931 "' in manifest"); 6932 return null; 6933 } 6934 } 6935 6936 /** 6937 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6938 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6939 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6940 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6941 * 6942 * @param callback Used to manipulate shared element transitions on the launched Activity. 6943 */ 6944 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6945 if (callback == null) { 6946 callback = SharedElementCallback.NULL_CALLBACK; 6947 } 6948 mEnterTransitionListener = callback; 6949 } 6950 6951 /** 6952 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6953 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6954 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6955 * calls will only come when returning from the started Activity. 6956 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6957 * 6958 * @param callback Used to manipulate shared element transitions on the launching Activity. 6959 */ 6960 public void setExitSharedElementCallback(SharedElementCallback callback) { 6961 if (callback == null) { 6962 callback = SharedElementCallback.NULL_CALLBACK; 6963 } 6964 mExitTransitionListener = callback; 6965 } 6966 6967 /** 6968 * Postpone the entering activity transition when Activity was started with 6969 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6970 * android.util.Pair[])}. 6971 * <p>This method gives the Activity the ability to delay starting the entering and 6972 * shared element transitions until all data is loaded. Until then, the Activity won't 6973 * draw into its window, leaving the window transparent. This may also cause the 6974 * returning animation to be delayed until data is ready. This method should be 6975 * called in {@link #onCreate(android.os.Bundle)} or in 6976 * {@link #onActivityReenter(int, android.content.Intent)}. 6977 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6978 * start the transitions. If the Activity did not use 6979 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6980 * android.util.Pair[])}, then this method does nothing.</p> 6981 */ 6982 public void postponeEnterTransition() { 6983 mActivityTransitionState.postponeEnterTransition(); 6984 } 6985 6986 /** 6987 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6988 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6989 * to have your Activity start drawing. 6990 */ 6991 public void startPostponedEnterTransition() { 6992 mActivityTransitionState.startPostponedEnterTransition(); 6993 } 6994 6995 /** 6996 * Create {@link DragAndDropPermissions} object bound to this activity and controlling the 6997 * access permissions for content URIs associated with the {@link DragEvent}. 6998 * @param event Drag event 6999 * @return The {@link DragAndDropPermissions} object used to control access to the content URIs. 7000 * Null if no content URIs are associated with the event or if permissions could not be granted. 7001 */ 7002 public DragAndDropPermissions requestDragAndDropPermissions(DragEvent event) { 7003 DragAndDropPermissions dragAndDropPermissions = DragAndDropPermissions.obtain(event); 7004 if (dragAndDropPermissions != null && dragAndDropPermissions.take(getActivityToken())) { 7005 return dragAndDropPermissions; 7006 } 7007 return null; 7008 } 7009 7010 // ------------------ Internal API ------------------ 7011 7012 final void setParent(Activity parent) { 7013 mParent = parent; 7014 } 7015 7016 final void attach(Context context, ActivityThread aThread, 7017 Instrumentation instr, IBinder token, int ident, 7018 Application application, Intent intent, ActivityInfo info, 7019 CharSequence title, Activity parent, String id, 7020 NonConfigurationInstances lastNonConfigurationInstances, 7021 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 7022 Window window, ActivityConfigCallback activityConfigCallback) { 7023 attachBaseContext(context); 7024 7025 mFragments.attachHost(null /*parent*/); 7026 7027 mWindow = new PhoneWindow(this, window, activityConfigCallback); 7028 mWindow.setWindowControllerCallback(this); 7029 mWindow.setCallback(this); 7030 mWindow.setOnWindowDismissedCallback(this); 7031 mWindow.getLayoutInflater().setPrivateFactory(this); 7032 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 7033 mWindow.setSoftInputMode(info.softInputMode); 7034 } 7035 if (info.uiOptions != 0) { 7036 mWindow.setUiOptions(info.uiOptions); 7037 } 7038 mUiThread = Thread.currentThread(); 7039 7040 mMainThread = aThread; 7041 mInstrumentation = instr; 7042 mToken = token; 7043 mIdent = ident; 7044 mApplication = application; 7045 mIntent = intent; 7046 mReferrer = referrer; 7047 mComponent = intent.getComponent(); 7048 mActivityInfo = info; 7049 mTitle = title; 7050 mParent = parent; 7051 mEmbeddedID = id; 7052 mLastNonConfigurationInstances = lastNonConfigurationInstances; 7053 if (voiceInteractor != null) { 7054 if (lastNonConfigurationInstances != null) { 7055 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 7056 } else { 7057 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 7058 Looper.myLooper()); 7059 } 7060 } 7061 7062 mWindow.setWindowManager( 7063 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 7064 mToken, mComponent.flattenToString(), 7065 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 7066 if (mParent != null) { 7067 mWindow.setContainer(mParent.getWindow()); 7068 } 7069 mWindowManager = mWindow.getWindowManager(); 7070 mCurrentConfig = config; 7071 7072 mWindow.setColorMode(info.colorMode); 7073 7074 setAutofillCompatibilityEnabled(application.isAutofillCompatibilityEnabled()); 7075 enableAutofillCompatibilityIfNeeded(); 7076 } 7077 7078 private void enableAutofillCompatibilityIfNeeded() { 7079 if (isAutofillCompatibilityEnabled()) { 7080 final AutofillManager afm = getSystemService(AutofillManager.class); 7081 if (afm != null) { 7082 afm.enableCompatibilityMode(); 7083 } 7084 } 7085 } 7086 7087 /** @hide */ 7088 public final IBinder getActivityToken() { 7089 return mParent != null ? mParent.getActivityToken() : mToken; 7090 } 7091 7092 final void performCreate(Bundle icicle) { 7093 performCreate(icicle, null); 7094 } 7095 7096 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 7097 mCanEnterPictureInPicture = true; 7098 restoreHasCurrentPermissionRequest(icicle); 7099 if (persistentState != null) { 7100 onCreate(icicle, persistentState); 7101 } else { 7102 onCreate(icicle); 7103 } 7104 mActivityTransitionState.readState(icicle); 7105 7106 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 7107 com.android.internal.R.styleable.Window_windowNoDisplay, false); 7108 mFragments.dispatchActivityCreated(); 7109 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7110 } 7111 7112 final void performNewIntent(Intent intent) { 7113 mCanEnterPictureInPicture = true; 7114 onNewIntent(intent); 7115 } 7116 7117 final void performStart() { 7118 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7119 mFragments.noteStateNotSaved(); 7120 mCalled = false; 7121 mFragments.execPendingActions(); 7122 mInstrumentation.callActivityOnStart(this); 7123 if (!mCalled) { 7124 throw new SuperNotCalledException( 7125 "Activity " + mComponent.toShortString() + 7126 " did not call through to super.onStart()"); 7127 } 7128 mFragments.dispatchStart(); 7129 mFragments.reportLoaderStart(); 7130 7131 boolean isAppDebuggable = 7132 (mApplication.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 7133 7134 // This property is set for all non-user builds except final release 7135 boolean isDlwarningEnabled = SystemProperties.getInt("ro.bionic.ld.warning", 0) == 1; 7136 7137 if (isAppDebuggable || isDlwarningEnabled) { 7138 String dlwarning = getDlWarning(); 7139 if (dlwarning != null) { 7140 String appName = getApplicationInfo().loadLabel(getPackageManager()) 7141 .toString(); 7142 String warning = "Detected problems with app native libraries\n" + 7143 "(please consult log for detail):\n" + dlwarning; 7144 if (isAppDebuggable) { 7145 new AlertDialog.Builder(this). 7146 setTitle(appName). 7147 setMessage(warning). 7148 setPositiveButton(android.R.string.ok, null). 7149 setCancelable(false). 7150 show(); 7151 } else { 7152 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 7153 } 7154 } 7155 } 7156 7157 // This property is set for all non-user builds except final release 7158 boolean isApiWarningEnabled = SystemProperties.getInt("ro.art.hiddenapi.warning", 0) == 1; 7159 7160 if (isAppDebuggable || isApiWarningEnabled) { 7161 if (!mMainThread.mHiddenApiWarningShown && VMRuntime.getRuntime().hasUsedHiddenApi()) { 7162 // Only show the warning once per process. 7163 mMainThread.mHiddenApiWarningShown = true; 7164 7165 String appName = getApplicationInfo().loadLabel(getPackageManager()) 7166 .toString(); 7167 String warning = "Detected problems with API compatibility\n" 7168 + "(visit g.co/dev/appcompat for more info)"; 7169 if (isAppDebuggable) { 7170 new AlertDialog.Builder(this) 7171 .setTitle(appName) 7172 .setMessage(warning) 7173 .setPositiveButton(android.R.string.ok, null) 7174 .setCancelable(false) 7175 .show(); 7176 } else { 7177 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 7178 } 7179 } 7180 } 7181 7182 mActivityTransitionState.enterReady(this); 7183 } 7184 7185 /** 7186 * Restart the activity. 7187 * @param start Indicates whether the activity should also be started after restart. 7188 * The option to not start immediately is needed in case a transaction with 7189 * multiple lifecycle transitions is in progress. 7190 */ 7191 final void performRestart(boolean start) { 7192 mCanEnterPictureInPicture = true; 7193 mFragments.noteStateNotSaved(); 7194 7195 if (mToken != null && mParent == null) { 7196 // No need to check mStopped, the roots will check if they were actually stopped. 7197 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 7198 } 7199 7200 if (mStopped) { 7201 mStopped = false; 7202 7203 synchronized (mManagedCursors) { 7204 final int N = mManagedCursors.size(); 7205 for (int i=0; i<N; i++) { 7206 ManagedCursor mc = mManagedCursors.get(i); 7207 if (mc.mReleased || mc.mUpdated) { 7208 if (!mc.mCursor.requery()) { 7209 if (getApplicationInfo().targetSdkVersion 7210 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 7211 throw new IllegalStateException( 7212 "trying to requery an already closed cursor " 7213 + mc.mCursor); 7214 } 7215 } 7216 mc.mReleased = false; 7217 mc.mUpdated = false; 7218 } 7219 } 7220 } 7221 7222 mCalled = false; 7223 mInstrumentation.callActivityOnRestart(this); 7224 if (!mCalled) { 7225 throw new SuperNotCalledException( 7226 "Activity " + mComponent.toShortString() + 7227 " did not call through to super.onRestart()"); 7228 } 7229 if (start) { 7230 performStart(); 7231 } 7232 } 7233 } 7234 7235 final void performResume(boolean followedByPause) { 7236 performRestart(true /* start */); 7237 7238 mFragments.execPendingActions(); 7239 7240 mLastNonConfigurationInstances = null; 7241 7242 if (mAutoFillResetNeeded) { 7243 // When Activity is destroyed in paused state, and relaunch activity, there will be 7244 // extra onResume and onPause event, ignore the first onResume and onPause. 7245 // see ActivityThread.handleRelaunchActivity() 7246 mAutoFillIgnoreFirstResumePause = followedByPause; 7247 if (mAutoFillIgnoreFirstResumePause && DEBUG_LIFECYCLE) { 7248 Slog.v(TAG, "autofill will ignore first pause when relaunching " + this); 7249 } 7250 } 7251 7252 mCalled = false; 7253 // mResumed is set by the instrumentation 7254 mInstrumentation.callActivityOnResume(this); 7255 if (!mCalled) { 7256 throw new SuperNotCalledException( 7257 "Activity " + mComponent.toShortString() + 7258 " did not call through to super.onResume()"); 7259 } 7260 7261 // invisible activities must be finished before onResume() completes 7262 if (!mVisibleFromClient && !mFinished) { 7263 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 7264 if (getApplicationInfo().targetSdkVersion 7265 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 7266 throw new IllegalStateException( 7267 "Activity " + mComponent.toShortString() + 7268 " did not call finish() prior to onResume() completing"); 7269 } 7270 } 7271 7272 // Now really resume, and install the current status bar and menu. 7273 mCalled = false; 7274 7275 mFragments.dispatchResume(); 7276 mFragments.execPendingActions(); 7277 7278 onPostResume(); 7279 if (!mCalled) { 7280 throw new SuperNotCalledException( 7281 "Activity " + mComponent.toShortString() + 7282 " did not call through to super.onPostResume()"); 7283 } 7284 } 7285 7286 final void performPause() { 7287 mDoReportFullyDrawn = false; 7288 mFragments.dispatchPause(); 7289 mCalled = false; 7290 onPause(); 7291 mResumed = false; 7292 if (!mCalled && getApplicationInfo().targetSdkVersion 7293 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 7294 throw new SuperNotCalledException( 7295 "Activity " + mComponent.toShortString() + 7296 " did not call through to super.onPause()"); 7297 } 7298 mResumed = false; 7299 } 7300 7301 final void performUserLeaving() { 7302 onUserInteraction(); 7303 onUserLeaveHint(); 7304 } 7305 7306 final void performStop(boolean preserveWindow) { 7307 mDoReportFullyDrawn = false; 7308 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 7309 7310 // Disallow entering picture-in-picture after the activity has been stopped 7311 mCanEnterPictureInPicture = false; 7312 7313 if (!mStopped) { 7314 if (mWindow != null) { 7315 mWindow.closeAllPanels(); 7316 } 7317 7318 // If we're preserving the window, don't setStoppedState to true, since we 7319 // need the window started immediately again. Stopping the window will 7320 // destroys hardware resources and causes flicker. 7321 if (!preserveWindow && mToken != null && mParent == null) { 7322 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 7323 } 7324 7325 mFragments.dispatchStop(); 7326 7327 mCalled = false; 7328 mInstrumentation.callActivityOnStop(this); 7329 if (!mCalled) { 7330 throw new SuperNotCalledException( 7331 "Activity " + mComponent.toShortString() + 7332 " did not call through to super.onStop()"); 7333 } 7334 7335 synchronized (mManagedCursors) { 7336 final int N = mManagedCursors.size(); 7337 for (int i=0; i<N; i++) { 7338 ManagedCursor mc = mManagedCursors.get(i); 7339 if (!mc.mReleased) { 7340 mc.mCursor.deactivate(); 7341 mc.mReleased = true; 7342 } 7343 } 7344 } 7345 7346 mStopped = true; 7347 } 7348 mResumed = false; 7349 } 7350 7351 final void performDestroy() { 7352 mDestroyed = true; 7353 mWindow.destroy(); 7354 mFragments.dispatchDestroy(); 7355 onDestroy(); 7356 mFragments.doLoaderDestroy(); 7357 if (mVoiceInteractor != null) { 7358 mVoiceInteractor.detachActivity(); 7359 } 7360 } 7361 7362 final void dispatchMultiWindowModeChanged(boolean isInMultiWindowMode, 7363 Configuration newConfig) { 7364 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7365 "dispatchMultiWindowModeChanged " + this + ": " + isInMultiWindowMode 7366 + " " + newConfig); 7367 mFragments.dispatchMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7368 if (mWindow != null) { 7369 mWindow.onMultiWindowModeChanged(); 7370 } 7371 onMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7372 } 7373 7374 final void dispatchPictureInPictureModeChanged(boolean isInPictureInPictureMode, 7375 Configuration newConfig) { 7376 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7377 "dispatchPictureInPictureModeChanged " + this + ": " + isInPictureInPictureMode 7378 + " " + newConfig); 7379 mFragments.dispatchPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7380 if (mWindow != null) { 7381 mWindow.onPictureInPictureModeChanged(isInPictureInPictureMode); 7382 } 7383 onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7384 } 7385 7386 /** 7387 * @hide 7388 */ 7389 public final boolean isResumed() { 7390 return mResumed; 7391 } 7392 7393 private void storeHasCurrentPermissionRequest(Bundle bundle) { 7394 if (bundle != null && mHasCurrentPermissionsRequest) { 7395 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 7396 } 7397 } 7398 7399 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 7400 if (bundle != null) { 7401 mHasCurrentPermissionsRequest = bundle.getBoolean( 7402 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 7403 } 7404 } 7405 7406 void dispatchActivityResult(String who, int requestCode, 7407 int resultCode, Intent data) { 7408 if (false) Log.v( 7409 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 7410 + ", resCode=" + resultCode + ", data=" + data); 7411 mFragments.noteStateNotSaved(); 7412 if (who == null) { 7413 onActivityResult(requestCode, resultCode, data); 7414 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 7415 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 7416 if (TextUtils.isEmpty(who)) { 7417 dispatchRequestPermissionsResult(requestCode, data); 7418 } else { 7419 Fragment frag = mFragments.findFragmentByWho(who); 7420 if (frag != null) { 7421 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 7422 } 7423 } 7424 } else if (who.startsWith("@android:view:")) { 7425 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 7426 getActivityToken()); 7427 for (ViewRootImpl viewRoot : views) { 7428 if (viewRoot.getView() != null 7429 && viewRoot.getView().dispatchActivityResult( 7430 who, requestCode, resultCode, data)) { 7431 return; 7432 } 7433 } 7434 } else if (who.startsWith(AUTO_FILL_AUTH_WHO_PREFIX)) { 7435 Intent resultData = (resultCode == Activity.RESULT_OK) ? data : null; 7436 getAutofillManager().onAuthenticationResult(requestCode, resultData, getCurrentFocus()); 7437 } else { 7438 Fragment frag = mFragments.findFragmentByWho(who); 7439 if (frag != null) { 7440 frag.onActivityResult(requestCode, resultCode, data); 7441 } 7442 } 7443 } 7444 7445 /** 7446 * Request to put this activity in a mode where the user is locked to a restricted set of 7447 * applications. 7448 * 7449 * <p>If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns {@code true} 7450 * for this component, the current task will be launched directly into LockTask mode. Only apps 7451 * whitelisted by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])} can 7452 * be launched while LockTask mode is active. The user will not be able to leave this mode 7453 * until this activity calls {@link #stopLockTask()}. Calling this method while the device is 7454 * already in LockTask mode has no effect. 7455 * 7456 * <p>Otherwise, the current task will be launched into screen pinning mode. In this case, the 7457 * system will prompt the user with a dialog requesting permission to use this mode. 7458 * The user can exit at any time through instructions shown on the request dialog. Calling 7459 * {@link #stopLockTask()} will also terminate this mode. 7460 * 7461 * <p><strong>Note:</strong> this method can only be called when the activity is foreground. 7462 * That is, between {@link #onResume()} and {@link #onPause()}. 7463 * 7464 * @see #stopLockTask() 7465 * @see android.R.attr#lockTaskMode 7466 */ 7467 public void startLockTask() { 7468 try { 7469 ActivityManager.getService().startLockTaskModeByToken(mToken); 7470 } catch (RemoteException e) { 7471 } 7472 } 7473 7474 /** 7475 * Stop the current task from being locked. 7476 * 7477 * <p>Called to end the LockTask or screen pinning mode started by {@link #startLockTask()}. 7478 * This can only be called by activities that have called {@link #startLockTask()} previously. 7479 * 7480 * <p><strong>Note:</strong> If the device is in LockTask mode that is not initially started 7481 * by this activity, then calling this method will not terminate the LockTask mode, but only 7482 * finish its own task. The device will remain in LockTask mode, until the activity which 7483 * started the LockTask mode calls this method, or until its whitelist authorization is revoked 7484 * by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])}. 7485 * 7486 * @see #startLockTask() 7487 * @see android.R.attr#lockTaskMode 7488 * @see ActivityManager#getLockTaskModeState() 7489 */ 7490 public void stopLockTask() { 7491 try { 7492 ActivityManager.getService().stopLockTaskModeByToken(mToken); 7493 } catch (RemoteException e) { 7494 } 7495 } 7496 7497 /** 7498 * Shows the user the system defined message for telling the user how to exit 7499 * lock task mode. The task containing this activity must be in lock task mode at the time 7500 * of this call for the message to be displayed. 7501 */ 7502 public void showLockTaskEscapeMessage() { 7503 try { 7504 ActivityManager.getService().showLockTaskEscapeMessage(mToken); 7505 } catch (RemoteException e) { 7506 } 7507 } 7508 7509 /** 7510 * Check whether the caption on freeform windows is displayed directly on the content. 7511 * 7512 * @return True if caption is displayed on content, false if it pushes the content down. 7513 * 7514 * @see #setOverlayWithDecorCaptionEnabled(boolean) 7515 * @hide 7516 */ 7517 public boolean isOverlayWithDecorCaptionEnabled() { 7518 return mWindow.isOverlayWithDecorCaptionEnabled(); 7519 } 7520 7521 /** 7522 * Set whether the caption should displayed directly on the content rather than push it down. 7523 * 7524 * This affects only freeform windows since they display the caption and only the main 7525 * window of the activity. The caption is used to drag the window around and also shows 7526 * maximize and close action buttons. 7527 * @hide 7528 */ 7529 public void setOverlayWithDecorCaptionEnabled(boolean enabled) { 7530 mWindow.setOverlayWithDecorCaptionEnabled(enabled); 7531 } 7532 7533 /** 7534 * Interface for informing a translucent {@link Activity} once all visible activities below it 7535 * have completed drawing. This is necessary only after an {@link Activity} has been made 7536 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 7537 * translucent again following a call to {@link 7538 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 7539 * ActivityOptions)} 7540 * 7541 * @hide 7542 */ 7543 @SystemApi 7544 public interface TranslucentConversionListener { 7545 /** 7546 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 7547 * below the top one have been redrawn. Following this callback it is safe to make the top 7548 * Activity translucent because the underlying Activity has been drawn. 7549 * 7550 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 7551 * occurred waiting for the Activity to complete drawing. 7552 * 7553 * @see Activity#convertFromTranslucent() 7554 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 7555 */ 7556 public void onTranslucentConversionComplete(boolean drawComplete); 7557 } 7558 7559 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 7560 mHasCurrentPermissionsRequest = false; 7561 // If the package installer crashed we may have not data - best effort. 7562 String[] permissions = (data != null) ? data.getStringArrayExtra( 7563 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7564 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7565 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7566 onRequestPermissionsResult(requestCode, permissions, grantResults); 7567 } 7568 7569 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 7570 Fragment fragment) { 7571 // If the package installer crashed we may have not data - best effort. 7572 String[] permissions = (data != null) ? data.getStringArrayExtra( 7573 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7574 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7575 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7576 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 7577 } 7578 7579 /** @hide */ 7580 @Override 7581 public final void autofillClientAuthenticate(int authenticationId, IntentSender intent, 7582 Intent fillInIntent) { 7583 try { 7584 startIntentSenderForResultInner(intent, AUTO_FILL_AUTH_WHO_PREFIX, 7585 authenticationId, fillInIntent, 0, 0, null); 7586 } catch (IntentSender.SendIntentException e) { 7587 Log.e(TAG, "authenticate() failed for intent:" + intent, e); 7588 } 7589 } 7590 7591 /** @hide */ 7592 @Override 7593 public final void autofillClientResetableStateAvailable() { 7594 mAutoFillResetNeeded = true; 7595 } 7596 7597 /** @hide */ 7598 @Override 7599 public final boolean autofillClientRequestShowFillUi(@NonNull View anchor, int width, 7600 int height, @Nullable Rect anchorBounds, IAutofillWindowPresenter presenter) { 7601 final boolean wasShowing; 7602 7603 if (mAutofillPopupWindow == null) { 7604 wasShowing = false; 7605 mAutofillPopupWindow = new AutofillPopupWindow(presenter); 7606 } else { 7607 wasShowing = mAutofillPopupWindow.isShowing(); 7608 } 7609 mAutofillPopupWindow.update(anchor, 0, 0, width, height, anchorBounds); 7610 7611 return !wasShowing && mAutofillPopupWindow.isShowing(); 7612 } 7613 7614 /** @hide */ 7615 @Override 7616 public final void autofillClientDispatchUnhandledKey(@NonNull View anchor, 7617 @NonNull KeyEvent keyEvent) { 7618 ViewRootImpl rootImpl = anchor.getViewRootImpl(); 7619 if (rootImpl != null) { 7620 // dont care if anchorView is current focus, for example a custom view may only receive 7621 // touchEvent, not focusable but can still trigger autofill window. The Key handling 7622 // might be inside parent of the custom view. 7623 rootImpl.dispatchKeyFromAutofill(keyEvent); 7624 } 7625 } 7626 7627 /** @hide */ 7628 @Override 7629 public final boolean autofillClientRequestHideFillUi() { 7630 if (mAutofillPopupWindow == null) { 7631 return false; 7632 } 7633 mAutofillPopupWindow.dismiss(); 7634 mAutofillPopupWindow = null; 7635 return true; 7636 } 7637 7638 /** @hide */ 7639 @Override 7640 public final boolean autofillClientIsFillUiShowing() { 7641 return mAutofillPopupWindow != null && mAutofillPopupWindow.isShowing(); 7642 } 7643 7644 /** @hide */ 7645 @Override 7646 @NonNull 7647 public final View[] autofillClientFindViewsByAutofillIdTraversal( 7648 @NonNull AutofillId[] autofillId) { 7649 final View[] views = new View[autofillId.length]; 7650 final ArrayList<ViewRootImpl> roots = 7651 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7652 7653 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7654 final View rootView = roots.get(rootNum).getView(); 7655 7656 if (rootView != null) { 7657 final int viewCount = autofillId.length; 7658 for (int viewNum = 0; viewNum < viewCount; viewNum++) { 7659 if (views[viewNum] == null) { 7660 views[viewNum] = rootView.findViewByAutofillIdTraversal( 7661 autofillId[viewNum].getViewId()); 7662 } 7663 } 7664 } 7665 } 7666 7667 return views; 7668 } 7669 7670 /** @hide */ 7671 @Override 7672 @Nullable 7673 public final View autofillClientFindViewByAutofillIdTraversal(AutofillId autofillId) { 7674 final ArrayList<ViewRootImpl> roots = 7675 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7676 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7677 final View rootView = roots.get(rootNum).getView(); 7678 7679 if (rootView != null) { 7680 final View view = rootView.findViewByAutofillIdTraversal(autofillId.getViewId()); 7681 if (view != null) { 7682 return view; 7683 } 7684 } 7685 } 7686 7687 return null; 7688 } 7689 7690 /** @hide */ 7691 @Override 7692 public final @NonNull boolean[] autofillClientGetViewVisibility( 7693 @NonNull AutofillId[] autofillIds) { 7694 final int autofillIdCount = autofillIds.length; 7695 final boolean[] visible = new boolean[autofillIdCount]; 7696 for (int i = 0; i < autofillIdCount; i++) { 7697 final AutofillId autofillId = autofillIds[i]; 7698 final View view = autofillClientFindViewByAutofillIdTraversal(autofillId); 7699 if (view != null) { 7700 if (!autofillId.isVirtual()) { 7701 visible[i] = view.isVisibleToUser(); 7702 } else { 7703 visible[i] = view.isVisibleToUserForAutofill(autofillId.getVirtualChildId()); 7704 } 7705 } 7706 } 7707 if (android.view.autofill.Helper.sVerbose) { 7708 Log.v(TAG, "autofillClientGetViewVisibility(): " + Arrays.toString(visible)); 7709 } 7710 return visible; 7711 } 7712 7713 /** @hide */ 7714 public final @Nullable View autofillClientFindViewByAccessibilityIdTraversal(int viewId, 7715 int windowId) { 7716 final ArrayList<ViewRootImpl> roots = WindowManagerGlobal.getInstance() 7717 .getRootViews(getActivityToken()); 7718 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7719 final View rootView = roots.get(rootNum).getView(); 7720 if (rootView != null && rootView.getAccessibilityWindowId() == windowId) { 7721 final View view = rootView.findViewByAccessibilityIdTraversal(viewId); 7722 if (view != null) { 7723 return view; 7724 } 7725 } 7726 } 7727 return null; 7728 } 7729 7730 /** @hide */ 7731 @Override 7732 public final @Nullable IBinder autofillClientGetActivityToken() { 7733 return getActivityToken(); 7734 } 7735 7736 /** @hide */ 7737 @Override 7738 public final boolean autofillClientIsVisibleForAutofill() { 7739 return !mStopped; 7740 } 7741 7742 /** @hide */ 7743 @Override 7744 public final boolean autofillIsCompatibilityModeEnabled() { 7745 return isAutofillCompatibilityEnabled(); 7746 } 7747 7748 /** @hide */ 7749 @Override 7750 public final boolean isDisablingEnterExitEventForAutofill() { 7751 return mAutoFillIgnoreFirstResumePause || !mResumed; 7752 } 7753 7754 /** 7755 * If set to true, this indicates to the system that it should never take a 7756 * screenshot of the activity to be used as a representation while it is not in a started state. 7757 * <p> 7758 * Note that the system may use the window background of the theme instead to represent 7759 * the window when it is not running. 7760 * <p> 7761 * Also note that in comparison to {@link android.view.WindowManager.LayoutParams#FLAG_SECURE}, 7762 * this only affects the behavior when the activity's screenshot would be used as a 7763 * representation when the activity is not in a started state, i.e. in Overview. The system may 7764 * still take screenshots of the activity in other contexts; for example, when the user takes a 7765 * screenshot of the entire screen, or when the active 7766 * {@link android.service.voice.VoiceInteractionService} requests a screenshot via 7767 * {@link android.service.voice.VoiceInteractionSession#SHOW_WITH_SCREENSHOT}. 7768 * 7769 * @param disable {@code true} to disable preview screenshots; {@code false} otherwise. 7770 * @hide 7771 */ 7772 public void setDisablePreviewScreenshots(boolean disable) { 7773 try { 7774 ActivityManager.getService().setDisablePreviewScreenshots(mToken, disable); 7775 } catch (RemoteException e) { 7776 Log.e(TAG, "Failed to call setDisablePreviewScreenshots", e); 7777 } 7778 } 7779 7780 /** 7781 * Specifies whether an {@link Activity} should be shown on top of the the lock screen whenever 7782 * the lockscreen is up and the activity is resumed. Normally an activity will be transitioned 7783 * to the stopped state if it is started while the lockscreen is up, but with this flag set the 7784 * activity will remain in the resumed state visible on-top of the lock screen. This value can 7785 * be set as a manifest attribute using {@link android.R.attr#showWhenLocked}. 7786 * 7787 * @param showWhenLocked {@code true} to show the {@link Activity} on top of the lock screen; 7788 * {@code false} otherwise. 7789 * @see #setTurnScreenOn(boolean) 7790 * @see android.R.attr#turnScreenOn 7791 * @see android.R.attr#showWhenLocked 7792 */ 7793 public void setShowWhenLocked(boolean showWhenLocked) { 7794 try { 7795 ActivityManager.getService().setShowWhenLocked(mToken, showWhenLocked); 7796 } catch (RemoteException e) { 7797 Log.e(TAG, "Failed to call setShowWhenLocked", e); 7798 } 7799 } 7800 7801 /** 7802 * Specifies whether the screen should be turned on when the {@link Activity} is resumed. 7803 * Normally an activity will be transitioned to the stopped state if it is started while the 7804 * screen if off, but with this flag set the activity will cause the screen to turn on if the 7805 * activity will be visible and resumed due to the screen coming on. The screen will not be 7806 * turned on if the activity won't be visible after the screen is turned on. This flag is 7807 * normally used in conjunction with the {@link android.R.attr#showWhenLocked} flag to make sure 7808 * the activity is visible after the screen is turned on when the lockscreen is up. In addition, 7809 * if this flag is set and the activity calls {@link 7810 * KeyguardManager#requestDismissKeyguard(Activity, KeyguardManager.KeyguardDismissCallback)} 7811 * the screen will turn on. 7812 * 7813 * @param turnScreenOn {@code true} to turn on the screen; {@code false} otherwise. 7814 * 7815 * @see #setShowWhenLocked(boolean) 7816 * @see android.R.attr#turnScreenOn 7817 * @see android.R.attr#showWhenLocked 7818 */ 7819 public void setTurnScreenOn(boolean turnScreenOn) { 7820 try { 7821 ActivityManager.getService().setTurnScreenOn(mToken, turnScreenOn); 7822 } catch (RemoteException e) { 7823 Log.e(TAG, "Failed to call setTurnScreenOn", e); 7824 } 7825 } 7826 7827 /** 7828 * Registers remote animations per transition type for this activity. 7829 * 7830 * @param definition The remote animation definition that defines which transition whould run 7831 * which remote animation. 7832 * @hide 7833 */ 7834 @RequiresPermission(CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS) 7835 public void registerRemoteAnimations(RemoteAnimationDefinition definition) { 7836 try { 7837 ActivityManager.getService().registerRemoteAnimations(mToken, definition); 7838 } catch (RemoteException e) { 7839 Log.e(TAG, "Failed to call registerRemoteAnimations", e); 7840 } 7841 } 7842 7843 class HostCallbacks extends FragmentHostCallback<Activity> { 7844 public HostCallbacks() { 7845 super(Activity.this /*activity*/); 7846 } 7847 7848 @Override 7849 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 7850 Activity.this.dump(prefix, fd, writer, args); 7851 } 7852 7853 @Override 7854 public boolean onShouldSaveFragmentState(Fragment fragment) { 7855 return !isFinishing(); 7856 } 7857 7858 @Override 7859 public LayoutInflater onGetLayoutInflater() { 7860 final LayoutInflater result = Activity.this.getLayoutInflater(); 7861 if (onUseFragmentManagerInflaterFactory()) { 7862 return result.cloneInContext(Activity.this); 7863 } 7864 return result; 7865 } 7866 7867 @Override 7868 public boolean onUseFragmentManagerInflaterFactory() { 7869 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 7870 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 7871 } 7872 7873 @Override 7874 public Activity onGetHost() { 7875 return Activity.this; 7876 } 7877 7878 @Override 7879 public void onInvalidateOptionsMenu() { 7880 Activity.this.invalidateOptionsMenu(); 7881 } 7882 7883 @Override 7884 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 7885 Bundle options) { 7886 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 7887 } 7888 7889 @Override 7890 public void onStartActivityAsUserFromFragment( 7891 Fragment fragment, Intent intent, int requestCode, Bundle options, 7892 UserHandle user) { 7893 Activity.this.startActivityAsUserFromFragment( 7894 fragment, intent, requestCode, options, user); 7895 } 7896 7897 @Override 7898 public void onStartIntentSenderFromFragment(Fragment fragment, IntentSender intent, 7899 int requestCode, @Nullable Intent fillInIntent, int flagsMask, int flagsValues, 7900 int extraFlags, Bundle options) throws IntentSender.SendIntentException { 7901 if (mParent == null) { 7902 startIntentSenderForResultInner(intent, fragment.mWho, requestCode, fillInIntent, 7903 flagsMask, flagsValues, options); 7904 } else if (options != null) { 7905 mParent.startIntentSenderFromChildFragment(fragment, intent, requestCode, 7906 fillInIntent, flagsMask, flagsValues, extraFlags, options); 7907 } 7908 } 7909 7910 @Override 7911 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 7912 int requestCode) { 7913 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 7914 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 7915 startActivityForResult(who, intent, requestCode, null); 7916 } 7917 7918 @Override 7919 public boolean onHasWindowAnimations() { 7920 return getWindow() != null; 7921 } 7922 7923 @Override 7924 public int onGetWindowAnimations() { 7925 final Window w = getWindow(); 7926 return (w == null) ? 0 : w.getAttributes().windowAnimations; 7927 } 7928 7929 @Override 7930 public void onAttachFragment(Fragment fragment) { 7931 Activity.this.onAttachFragment(fragment); 7932 } 7933 7934 @Nullable 7935 @Override 7936 public <T extends View> T onFindViewById(int id) { 7937 return Activity.this.findViewById(id); 7938 } 7939 7940 @Override 7941 public boolean onHasView() { 7942 final Window w = getWindow(); 7943 return (w != null && w.peekDecorView() != null); 7944 } 7945 } 7946} 7947