Activity.java revision e83f34cde79c51efb66f31f2770c2e8e572e96db
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 java.lang.Character.MIN_VALUE; 20 21import android.annotation.CallSuper; 22import android.annotation.DrawableRes; 23import android.annotation.IdRes; 24import android.annotation.IntDef; 25import android.annotation.LayoutRes; 26import android.annotation.MainThread; 27import android.annotation.NonNull; 28import android.annotation.Nullable; 29import android.annotation.RequiresPermission; 30import android.annotation.StyleRes; 31import android.annotation.SystemApi; 32import android.app.VoiceInteractor.Request; 33import android.app.admin.DevicePolicyManager; 34import android.app.assist.AssistContent; 35import android.content.ComponentCallbacks2; 36import android.content.ComponentName; 37import android.content.ContentResolver; 38import android.content.Context; 39import android.content.CursorLoader; 40import android.content.IIntentSender; 41import android.content.Intent; 42import android.content.IntentSender; 43import android.content.SharedPreferences; 44import android.content.pm.ActivityInfo; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.PackageManager; 47import android.content.pm.PackageManager.NameNotFoundException; 48import android.content.res.Configuration; 49import android.content.res.Resources; 50import android.content.res.TypedArray; 51import android.database.Cursor; 52import android.graphics.Bitmap; 53import android.graphics.Canvas; 54import android.graphics.Color; 55import android.graphics.Rect; 56import android.graphics.drawable.Drawable; 57import android.media.AudioManager; 58import android.media.session.MediaController; 59import android.net.Uri; 60import android.os.BadParcelableException; 61import android.os.Build; 62import android.os.Bundle; 63import android.os.Handler; 64import android.os.IBinder; 65import android.os.Looper; 66import android.os.Parcelable; 67import android.os.PersistableBundle; 68import android.os.RemoteException; 69import android.os.ServiceManager.ServiceNotFoundException; 70import android.os.StrictMode; 71import android.os.SystemProperties; 72import android.os.UserHandle; 73import android.text.Selection; 74import android.text.SpannableStringBuilder; 75import android.text.TextUtils; 76import android.text.method.TextKeyListener; 77import android.transition.Scene; 78import android.transition.TransitionManager; 79import android.util.ArrayMap; 80import android.util.AttributeSet; 81import android.util.EventLog; 82import android.util.Log; 83import android.util.PrintWriterPrinter; 84import android.util.Slog; 85import android.util.SparseArray; 86import android.util.SuperNotCalledException; 87import android.view.ActionMode; 88import android.view.ContextMenu; 89import android.view.ContextMenu.ContextMenuInfo; 90import android.view.ContextThemeWrapper; 91import android.view.DragAndDropPermissions; 92import android.view.DragEvent; 93import android.view.KeyEvent; 94import android.view.KeyboardShortcutGroup; 95import android.view.KeyboardShortcutInfo; 96import android.view.LayoutInflater; 97import android.view.Menu; 98import android.view.MenuInflater; 99import android.view.MenuItem; 100import android.view.MotionEvent; 101import android.view.SearchEvent; 102import android.view.View; 103import android.view.View.OnCreateContextMenuListener; 104import android.view.ViewGroup; 105import android.view.ViewGroup.LayoutParams; 106import android.view.ViewManager; 107import android.view.ViewRootImpl; 108import android.view.ViewRootImpl.ActivityConfigCallback; 109import android.view.Window; 110import android.view.Window.WindowControllerCallback; 111import android.view.WindowManager; 112import android.view.WindowManagerGlobal; 113import android.view.accessibility.AccessibilityEvent; 114import android.view.autofill.AutofillManager; 115import android.view.autofill.AutofillManager.AutofillClient; 116import android.view.autofill.AutofillPopupWindow; 117import android.view.autofill.IAutofillWindowPresenter; 118import android.widget.AdapterView; 119import android.widget.Toast; 120import android.widget.Toolbar; 121 122import com.android.internal.annotations.GuardedBy; 123import com.android.internal.app.IVoiceInteractor; 124import com.android.internal.app.ToolbarActionBar; 125import com.android.internal.app.WindowDecorActionBar; 126import com.android.internal.policy.DecorView; 127import com.android.internal.policy.PhoneWindow; 128 129import java.io.FileDescriptor; 130import java.io.PrintWriter; 131import java.lang.annotation.Retention; 132import java.lang.annotation.RetentionPolicy; 133import java.util.ArrayList; 134import java.util.HashMap; 135import java.util.List; 136 137 138/** 139 * An activity is a single, focused thing that the user can do. Almost all 140 * activities interact with the user, so the Activity class takes care of 141 * creating a window for you in which you can place your UI with 142 * {@link #setContentView}. While activities are often presented to the user 143 * as full-screen windows, they can also be used in other ways: as floating 144 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 145 * or embedded inside of another activity (using {@link ActivityGroup}). 146 * 147 * There are two methods almost all subclasses of Activity will implement: 148 * 149 * <ul> 150 * <li> {@link #onCreate} is where you initialize your activity. Most 151 * importantly, here you will usually call {@link #setContentView(int)} 152 * with a layout resource defining your UI, and using {@link #findViewById} 153 * to retrieve the widgets in that UI that you need to interact with 154 * programmatically. 155 * 156 * <li> {@link #onPause} is where you deal with the user leaving your 157 * activity. Most importantly, any changes made by the user should at this 158 * point be committed (usually to the 159 * {@link android.content.ContentProvider} holding the data). 160 * </ul> 161 * 162 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 163 * activity classes must have a corresponding 164 * {@link android.R.styleable#AndroidManifestActivity <activity>} 165 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 166 * 167 * <p>Topics covered here: 168 * <ol> 169 * <li><a href="#Fragments">Fragments</a> 170 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 171 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 172 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 173 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 174 * <li><a href="#Permissions">Permissions</a> 175 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 176 * </ol> 177 * 178 * <div class="special reference"> 179 * <h3>Developer Guides</h3> 180 * <p>The Activity class is an important part of an application's overall lifecycle, 181 * and the way activities are launched and put together is a fundamental 182 * part of the platform's application model. For a detailed perspective on the structure of an 183 * Android application and how activities behave, please read the 184 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 185 * <a href="{@docRoot}guide/components/tasks-and-back-stack.html">Tasks and Back Stack</a> 186 * developer guides.</p> 187 * 188 * <p>You can also find a detailed discussion about how to create activities in the 189 * <a href="{@docRoot}guide/components/activities.html">Activities</a> 190 * developer guide.</p> 191 * </div> 192 * 193 * <a name="Fragments"></a> 194 * <h3>Fragments</h3> 195 * 196 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 197 * implementations can make use of the {@link Fragment} class to better 198 * modularize their code, build more sophisticated user interfaces for larger 199 * screens, and help scale their application between small and large screens. 200 * 201 * <a name="ActivityLifecycle"></a> 202 * <h3>Activity Lifecycle</h3> 203 * 204 * <p>Activities in the system are managed as an <em>activity stack</em>. 205 * When a new activity is started, it is placed on the top of the stack 206 * and becomes the running activity -- the previous activity always remains 207 * below it in the stack, and will not come to the foreground again until 208 * the new activity exits.</p> 209 * 210 * <p>An activity has essentially four states:</p> 211 * <ul> 212 * <li> If an activity is in the foreground of the screen (at the top of 213 * the stack), 214 * it is <em>active</em> or <em>running</em>. </li> 215 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 216 * or transparent activity has focus on top of your activity), it 217 * is <em>paused</em>. A paused activity is completely alive (it 218 * maintains all state and member information and remains attached to 219 * the window manager), but can be killed by the system in extreme 220 * low memory situations. 221 * <li>If an activity is completely obscured by another activity, 222 * it is <em>stopped</em>. It still retains all state and member information, 223 * however, it is no longer visible to the user so its window is hidden 224 * and it will often be killed by the system when memory is needed 225 * elsewhere.</li> 226 * <li>If an activity is paused or stopped, the system can drop the activity 227 * from memory by either asking it to finish, or simply killing its 228 * process. When it is displayed again to the user, it must be 229 * completely restarted and restored to its previous state.</li> 230 * </ul> 231 * 232 * <p>The following diagram shows the important state paths of an Activity. 233 * The square rectangles represent callback methods you can implement to 234 * perform operations when the Activity moves between states. The colored 235 * ovals are major states the Activity can be in.</p> 236 * 237 * <p><img src="../../../images/activity_lifecycle.png" 238 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 239 * 240 * <p>There are three key loops you may be interested in monitoring within your 241 * activity: 242 * 243 * <ul> 244 * <li>The <b>entire lifetime</b> of an activity happens between the first call 245 * to {@link android.app.Activity#onCreate} through to a single final call 246 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 247 * of "global" state in onCreate(), and release all remaining resources in 248 * onDestroy(). For example, if it has a thread running in the background 249 * to download data from the network, it may create that thread in onCreate() 250 * and then stop the thread in onDestroy(). 251 * 252 * <li>The <b>visible lifetime</b> of an activity happens between a call to 253 * {@link android.app.Activity#onStart} until a corresponding call to 254 * {@link android.app.Activity#onStop}. During this time the user can see the 255 * activity on-screen, though it may not be in the foreground and interacting 256 * with the user. Between these two methods you can maintain resources that 257 * are needed to show the activity to the user. For example, you can register 258 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 259 * that impact your UI, and unregister it in onStop() when the user no 260 * longer sees what you are displaying. The onStart() and onStop() methods 261 * can be called multiple times, as the activity becomes visible and hidden 262 * to the user. 263 * 264 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 265 * {@link android.app.Activity#onResume} until a corresponding call to 266 * {@link android.app.Activity#onPause}. During this time the activity is 267 * in front of all other activities and interacting with the user. An activity 268 * can frequently go between the resumed and paused states -- for example when 269 * the device goes to sleep, when an activity result is delivered, when a new 270 * intent is delivered -- so the code in these methods should be fairly 271 * lightweight. 272 * </ul> 273 * 274 * <p>The entire lifecycle of an activity is defined by the following 275 * Activity methods. All of these are hooks that you can override 276 * to do appropriate work when the activity changes state. All 277 * activities will implement {@link android.app.Activity#onCreate} 278 * to do their initial setup; many will also implement 279 * {@link android.app.Activity#onPause} to commit changes to data and 280 * otherwise prepare to stop interacting with the user. You should always 281 * call up to your superclass when implementing these methods.</p> 282 * 283 * </p> 284 * <pre class="prettyprint"> 285 * public class Activity extends ApplicationContext { 286 * protected void onCreate(Bundle savedInstanceState); 287 * 288 * protected void onStart(); 289 * 290 * protected void onRestart(); 291 * 292 * protected void onResume(); 293 * 294 * protected void onPause(); 295 * 296 * protected void onStop(); 297 * 298 * protected void onDestroy(); 299 * } 300 * </pre> 301 * 302 * <p>In general the movement through an activity's lifecycle looks like 303 * this:</p> 304 * 305 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 306 * <colgroup align="left" span="3" /> 307 * <colgroup align="left" /> 308 * <colgroup align="center" /> 309 * <colgroup align="center" /> 310 * 311 * <thead> 312 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 313 * </thead> 314 * 315 * <tbody> 316 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</td> 317 * <td>Called when the activity is first created. 318 * This is where you should do all of your normal static set up: 319 * create views, bind data to lists, etc. This method also 320 * provides you with a Bundle containing the activity's previously 321 * frozen state, if there was one. 322 * <p>Always followed by <code>onStart()</code>.</td> 323 * <td align="center">No</td> 324 * <td align="center"><code>onStart()</code></td> 325 * </tr> 326 * 327 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 328 * <td colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</td> 329 * <td>Called after your activity has been stopped, prior to it being 330 * started again. 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 colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</td> 337 * <td>Called when the activity is becoming visible to the user. 338 * <p>Followed by <code>onResume()</code> if the activity comes 339 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 340 * <td align="center">No</td> 341 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 342 * </tr> 343 * 344 * <tr><td rowspan="2" style="border-left: none;"> </td> 345 * <td align="left" border="0">{@link android.app.Activity#onResume onResume()}</td> 346 * <td>Called when the activity will start 347 * interacting with the user. At this point your activity is at 348 * the top of the activity stack, with user input going to it. 349 * <p>Always followed by <code>onPause()</code>.</td> 350 * <td align="center">No</td> 351 * <td align="center"><code>onPause()</code></td> 352 * </tr> 353 * 354 * <tr><td align="left" border="0">{@link android.app.Activity#onPause onPause()}</td> 355 * <td>Called when the system is about to start resuming a previous 356 * activity. This is typically used to commit unsaved changes to 357 * persistent data, stop animations and other things that may be consuming 358 * CPU, etc. Implementations of this method must be very quick because 359 * the next activity will not be resumed until this method returns. 360 * <p>Followed by either <code>onResume()</code> if the activity 361 * returns back to the front, or <code>onStop()</code> if it becomes 362 * invisible to the user.</td> 363 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 364 * <td align="center"><code>onResume()</code> or<br> 365 * <code>onStop()</code></td> 366 * </tr> 367 * 368 * <tr><td colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</td> 369 * <td>Called when the activity is no longer visible to the user, because 370 * another activity has been resumed and is covering this one. This 371 * may happen either because a new activity is being started, an existing 372 * one is being brought in front of this one, or this one is being 373 * destroyed. 374 * <p>Followed by either <code>onRestart()</code> if 375 * this activity is coming back to interact with the user, or 376 * <code>onDestroy()</code> if this activity is going away.</td> 377 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 378 * <td align="center"><code>onRestart()</code> or<br> 379 * <code>onDestroy()</code></td> 380 * </tr> 381 * 382 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</td> 383 * <td>The final call you receive before your 384 * activity is destroyed. This can happen either because the 385 * activity is finishing (someone called {@link Activity#finish} on 386 * it, or because the system is temporarily destroying this 387 * instance of the activity to save space. You can distinguish 388 * between these two scenarios with the {@link 389 * Activity#isFinishing} method.</td> 390 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 391 * <td align="center"><em>nothing</em></td> 392 * </tr> 393 * </tbody> 394 * </table> 395 * 396 * <p>Note the "Killable" column in the above table -- for those methods that 397 * are marked as being killable, after that method returns the process hosting the 398 * activity may be killed by the system <em>at any time</em> without another line 399 * of its code being executed. Because of this, you should use the 400 * {@link #onPause} method to write any persistent data (such as user edits) 401 * to storage. In addition, the method 402 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 403 * in such a background state, allowing you to save away any dynamic instance 404 * state in your activity into the given Bundle, to be later received in 405 * {@link #onCreate} if the activity needs to be re-created. 406 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 407 * section for more information on how the lifecycle of a process is tied 408 * to the activities it is hosting. Note that it is important to save 409 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 410 * because the latter is not part of the lifecycle callbacks, so will not 411 * be called in every situation as described in its documentation.</p> 412 * 413 * <p class="note">Be aware that these semantics will change slightly between 414 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 415 * vs. those targeting prior platforms. Starting with Honeycomb, an application 416 * is not in the killable state until its {@link #onStop} has returned. This 417 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 418 * safely called after {@link #onPause()} and allows and application to safely 419 * wait until {@link #onStop()} to save persistent state.</p> 420 * 421 * <p>For those methods that are not marked as being killable, the activity's 422 * process will not be killed by the system starting from the time the method 423 * is called and continuing after it returns. Thus an activity is in the killable 424 * state, for example, between after <code>onPause()</code> to the start of 425 * <code>onResume()</code>.</p> 426 * 427 * <a name="ConfigurationChanges"></a> 428 * <h3>Configuration Changes</h3> 429 * 430 * <p>If the configuration of the device (as defined by the 431 * {@link Configuration Resources.Configuration} class) changes, 432 * then anything displaying a user interface will need to update to match that 433 * configuration. Because Activity is the primary mechanism for interacting 434 * with the user, it includes special support for handling configuration 435 * changes.</p> 436 * 437 * <p>Unless you specify otherwise, a configuration change (such as a change 438 * in screen orientation, language, input devices, etc) will cause your 439 * current activity to be <em>destroyed</em>, going through the normal activity 440 * lifecycle process of {@link #onPause}, 441 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 442 * had been in the foreground or visible to the user, once {@link #onDestroy} is 443 * called in that instance then a new instance of the activity will be 444 * created, with whatever savedInstanceState the previous instance had generated 445 * from {@link #onSaveInstanceState}.</p> 446 * 447 * <p>This is done because any application resource, 448 * including layout files, can change based on any configuration value. Thus 449 * the only safe way to handle a configuration change is to re-retrieve all 450 * resources, including layouts, drawables, and strings. Because activities 451 * must already know how to save their state and re-create themselves from 452 * that state, this is a convenient way to have an activity restart itself 453 * with a new configuration.</p> 454 * 455 * <p>In some special cases, you may want to bypass restarting of your 456 * activity based on one or more types of configuration changes. This is 457 * done with the {@link android.R.attr#configChanges android:configChanges} 458 * attribute in its manifest. For any types of configuration changes you say 459 * that you handle there, you will receive a call to your current activity's 460 * {@link #onConfigurationChanged} method instead of being restarted. If 461 * a configuration change involves any that you do not handle, however, the 462 * activity will still be restarted and {@link #onConfigurationChanged} 463 * will not be called.</p> 464 * 465 * <a name="StartingActivities"></a> 466 * <h3>Starting Activities and Getting Results</h3> 467 * 468 * <p>The {@link android.app.Activity#startActivity} 469 * method is used to start a 470 * new activity, which will be placed at the top of the activity stack. It 471 * takes a single argument, an {@link android.content.Intent Intent}, 472 * which describes the activity 473 * to be executed.</p> 474 * 475 * <p>Sometimes you want to get a result back from an activity when it 476 * ends. For example, you may start an activity that lets the user pick 477 * a person in a list of contacts; when it ends, it returns the person 478 * that was selected. To do this, you call the 479 * {@link android.app.Activity#startActivityForResult(Intent, int)} 480 * version with a second integer parameter identifying the call. The result 481 * will come back through your {@link android.app.Activity#onActivityResult} 482 * method.</p> 483 * 484 * <p>When an activity exits, it can call 485 * {@link android.app.Activity#setResult(int)} 486 * to return data back to its parent. It must always supply a result code, 487 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 488 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 489 * return back an Intent containing any additional data it wants. All of this 490 * information appears back on the 491 * parent's <code>Activity.onActivityResult()</code>, along with the integer 492 * identifier it originally supplied.</p> 493 * 494 * <p>If a child activity fails for any reason (such as crashing), the parent 495 * activity will receive a result with the code RESULT_CANCELED.</p> 496 * 497 * <pre class="prettyprint"> 498 * public class MyActivity extends Activity { 499 * ... 500 * 501 * static final int PICK_CONTACT_REQUEST = 0; 502 * 503 * public boolean onKeyDown(int keyCode, KeyEvent event) { 504 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 505 * // When the user center presses, let them pick a contact. 506 * startActivityForResult( 507 * new Intent(Intent.ACTION_PICK, 508 * new Uri("content://contacts")), 509 * PICK_CONTACT_REQUEST); 510 * return true; 511 * } 512 * return false; 513 * } 514 * 515 * protected void onActivityResult(int requestCode, int resultCode, 516 * Intent data) { 517 * if (requestCode == PICK_CONTACT_REQUEST) { 518 * if (resultCode == RESULT_OK) { 519 * // A contact was picked. Here we will just display it 520 * // to the user. 521 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 522 * } 523 * } 524 * } 525 * } 526 * </pre> 527 * 528 * <a name="SavingPersistentState"></a> 529 * <h3>Saving Persistent State</h3> 530 * 531 * <p>There are generally two kinds of persistent state than an activity 532 * will deal with: shared document-like data (typically stored in a SQLite 533 * database using a {@linkplain android.content.ContentProvider content provider}) 534 * and internal state such as user preferences.</p> 535 * 536 * <p>For content provider data, we suggest that activities use a 537 * "edit in place" user model. That is, any edits a user makes are effectively 538 * made immediately without requiring an additional confirmation step. 539 * Supporting this model is generally a simple matter of following two rules:</p> 540 * 541 * <ul> 542 * <li> <p>When creating a new document, the backing database entry or file for 543 * it is created immediately. For example, if the user chooses to write 544 * a new email, a new entry for that email is created as soon as they 545 * start entering data, so that if they go to any other activity after 546 * that point this email will now appear in the list of drafts.</p> 547 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 548 * commit to the backing content provider or file any changes the user 549 * has made. This ensures that those changes will be seen by any other 550 * activity that is about to run. You will probably want to commit 551 * your data even more aggressively at key times during your 552 * activity's lifecycle: for example before starting a new 553 * activity, before finishing your own activity, when the user 554 * switches between input fields, etc.</p> 555 * </ul> 556 * 557 * <p>This model is designed to prevent data loss when a user is navigating 558 * between activities, and allows the system to safely kill an activity (because 559 * system resources are needed somewhere else) at any time after it has been 560 * paused. Note this implies 561 * that the user pressing BACK from your activity does <em>not</em> 562 * mean "cancel" -- it means to leave the activity with its current contents 563 * saved away. Canceling edits in an activity must be provided through 564 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 565 * 566 * <p>See the {@linkplain android.content.ContentProvider content package} for 567 * more information about content providers. These are a key aspect of how 568 * different activities invoke and propagate data between themselves.</p> 569 * 570 * <p>The Activity class also provides an API for managing internal persistent state 571 * associated with an activity. This can be used, for example, to remember 572 * the user's preferred initial display in a calendar (day view or week view) 573 * or the user's default home page in a web browser.</p> 574 * 575 * <p>Activity persistent state is managed 576 * with the method {@link #getPreferences}, 577 * allowing you to retrieve and 578 * modify a set of name/value pairs associated with the activity. To use 579 * preferences that are shared across multiple application components 580 * (activities, receivers, services, providers), you can use the underlying 581 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 582 * to retrieve a preferences 583 * object stored under a specific name. 584 * (Note that it is not possible to share settings data across application 585 * packages -- for that you will need a content provider.)</p> 586 * 587 * <p>Here is an excerpt from a calendar activity that stores the user's 588 * preferred view mode in its persistent settings:</p> 589 * 590 * <pre class="prettyprint"> 591 * public class CalendarActivity extends Activity { 592 * ... 593 * 594 * static final int DAY_VIEW_MODE = 0; 595 * static final int WEEK_VIEW_MODE = 1; 596 * 597 * private SharedPreferences mPrefs; 598 * private int mCurViewMode; 599 * 600 * protected void onCreate(Bundle savedInstanceState) { 601 * super.onCreate(savedInstanceState); 602 * 603 * SharedPreferences mPrefs = getSharedPreferences(); 604 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 605 * } 606 * 607 * protected void onPause() { 608 * super.onPause(); 609 * 610 * SharedPreferences.Editor ed = mPrefs.edit(); 611 * ed.putInt("view_mode", mCurViewMode); 612 * ed.commit(); 613 * } 614 * } 615 * </pre> 616 * 617 * <a name="Permissions"></a> 618 * <h3>Permissions</h3> 619 * 620 * <p>The ability to start a particular Activity can be enforced when it is 621 * declared in its 622 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 623 * tag. By doing so, other applications will need to declare a corresponding 624 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 625 * element in their own manifest to be able to start that activity. 626 * 627 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 628 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 629 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 630 * Activity access to the specific URIs in the Intent. Access will remain 631 * until the Activity has finished (it will remain across the hosting 632 * process being killed and other temporary destruction). As of 633 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 634 * was already created and a new Intent is being delivered to 635 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 636 * to the existing ones it holds. 637 * 638 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 639 * document for more information on permissions and security in general. 640 * 641 * <a name="ProcessLifecycle"></a> 642 * <h3>Process Lifecycle</h3> 643 * 644 * <p>The Android system attempts to keep application process around for as 645 * long as possible, but eventually will need to remove old processes when 646 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 647 * Lifecycle</a>, the decision about which process to remove is intimately 648 * tied to the state of the user's interaction with it. In general, there 649 * are four states a process can be in based on the activities running in it, 650 * listed here in order of importance. The system will kill less important 651 * processes (the last ones) before it resorts to killing more important 652 * processes (the first ones). 653 * 654 * <ol> 655 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 656 * that the user is currently interacting with) is considered the most important. 657 * Its process will only be killed as a last resort, if it uses more memory 658 * than is available on the device. Generally at this point the device has 659 * reached a memory paging state, so this is required in order to keep the user 660 * interface responsive. 661 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 662 * but not in the foreground, such as one sitting behind a foreground dialog) 663 * is considered extremely important and will not be killed unless that is 664 * required to keep the foreground activity running. 665 * <li> <p>A <b>background activity</b> (an activity that is not visible to 666 * the user and has been paused) is no longer critical, so the system may 667 * safely kill its process to reclaim memory for other foreground or 668 * visible processes. If its process needs to be killed, when the user navigates 669 * back to the activity (making it visible on the screen again), its 670 * {@link #onCreate} method will be called with the savedInstanceState it had previously 671 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 672 * state as the user last left it. 673 * <li> <p>An <b>empty process</b> is one hosting no activities or other 674 * application components (such as {@link Service} or 675 * {@link android.content.BroadcastReceiver} classes). These are killed very 676 * quickly by the system as memory becomes low. For this reason, any 677 * background operation you do outside of an activity must be executed in the 678 * context of an activity BroadcastReceiver or Service to ensure that the system 679 * knows it needs to keep your process around. 680 * </ol> 681 * 682 * <p>Sometimes an Activity may need to do a long-running operation that exists 683 * independently of the activity lifecycle itself. An example may be a camera 684 * application that allows you to upload a picture to a web site. The upload 685 * may take a long time, and the application should allow the user to leave 686 * the application while it is executing. To accomplish this, your Activity 687 * should start a {@link Service} in which the upload takes place. This allows 688 * the system to properly prioritize your process (considering it to be more 689 * important than other non-visible applications) for the duration of the 690 * upload, independent of whether the original activity is paused, stopped, 691 * or finished. 692 */ 693public class Activity extends ContextThemeWrapper 694 implements LayoutInflater.Factory2, 695 Window.Callback, KeyEvent.Callback, 696 OnCreateContextMenuListener, ComponentCallbacks2, 697 Window.OnWindowDismissedCallback, WindowControllerCallback, 698 AutofillManager.AutofillClient { 699 private static final String TAG = "Activity"; 700 private static final boolean DEBUG_LIFECYCLE = false; 701 702 /** Standard activity result: operation canceled. */ 703 public static final int RESULT_CANCELED = 0; 704 /** Standard activity result: operation succeeded. */ 705 public static final int RESULT_OK = -1; 706 /** Start of user-defined activity results. */ 707 public static final int RESULT_FIRST_USER = 1; 708 709 /** @hide Task isn't finished when activity is finished */ 710 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 711 /** 712 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 713 * past behavior the task is also removed from recents. 714 */ 715 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 716 /** 717 * @hide Task is finished along with the finishing activity, but it is not removed from 718 * recents. 719 */ 720 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 721 722 static final String FRAGMENTS_TAG = "android:fragments"; 723 private static final String LAST_AUTOFILL_ID = "android:lastAutofillId"; 724 725 private static final String AUTOFILL_RESET_NEEDED = "@android:autofillResetNeeded"; 726 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 727 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 728 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 729 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 730 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 731 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 732 "android:hasCurrentPermissionsRequest"; 733 734 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 735 private static final String AUTO_FILL_AUTH_WHO_PREFIX = "@android:autoFillAuth:"; 736 737 private static final String KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME = "com.android.systemui"; 738 739 private static class ManagedDialog { 740 Dialog mDialog; 741 Bundle mArgs; 742 } 743 private SparseArray<ManagedDialog> mManagedDialogs; 744 745 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 746 private Instrumentation mInstrumentation; 747 private IBinder mToken; 748 private int mIdent; 749 /*package*/ String mEmbeddedID; 750 private Application mApplication; 751 /*package*/ Intent mIntent; 752 /*package*/ String mReferrer; 753 private ComponentName mComponent; 754 /*package*/ ActivityInfo mActivityInfo; 755 /*package*/ ActivityThread mMainThread; 756 Activity mParent; 757 boolean mCalled; 758 /*package*/ boolean mResumed; 759 /*package*/ boolean mStopped; 760 boolean mFinished; 761 boolean mStartedActivity; 762 private boolean mDestroyed; 763 private boolean mDoReportFullyDrawn = true; 764 private boolean mRestoredFromBundle; 765 766 /** {@code true} if the activity lifecycle is in a state which supports picture-in-picture. 767 * This only affects the client-side exception, the actual state check still happens in AMS. */ 768 private boolean mCanEnterPictureInPicture = false; 769 /** true if the activity is going through a transient pause */ 770 /*package*/ boolean mTemporaryPause = false; 771 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 772 /*package*/ boolean mChangingConfigurations = false; 773 /*package*/ int mConfigChangeFlags; 774 /*package*/ Configuration mCurrentConfig; 775 private SearchManager mSearchManager; 776 private MenuInflater mMenuInflater; 777 778 /** The autofill manager. Always access via {@link #getAutofillManager()}. */ 779 @Nullable private AutofillManager mAutofillManager; 780 781 static final class NonConfigurationInstances { 782 Object activity; 783 HashMap<String, Object> children; 784 FragmentManagerNonConfig fragments; 785 ArrayMap<String, LoaderManager> loaders; 786 VoiceInteractor voiceInteractor; 787 } 788 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 789 790 private Window mWindow; 791 792 private WindowManager mWindowManager; 793 /*package*/ View mDecor = null; 794 /*package*/ boolean mWindowAdded = false; 795 /*package*/ boolean mVisibleFromServer = false; 796 /*package*/ boolean mVisibleFromClient = true; 797 /*package*/ ActionBar mActionBar = null; 798 private boolean mEnableDefaultActionBarUp; 799 800 private VoiceInteractor mVoiceInteractor; 801 802 private CharSequence mTitle; 803 private int mTitleColor = 0; 804 805 // we must have a handler before the FragmentController is constructed 806 final Handler mHandler = new Handler(); 807 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 808 809 private static final class ManagedCursor { 810 ManagedCursor(Cursor cursor) { 811 mCursor = cursor; 812 mReleased = false; 813 mUpdated = false; 814 } 815 816 private final Cursor mCursor; 817 private boolean mReleased; 818 private boolean mUpdated; 819 } 820 821 @GuardedBy("mManagedCursors") 822 private final ArrayList<ManagedCursor> mManagedCursors = new ArrayList<>(); 823 824 @GuardedBy("this") 825 int mResultCode = RESULT_CANCELED; 826 @GuardedBy("this") 827 Intent mResultData = null; 828 829 private TranslucentConversionListener mTranslucentCallback; 830 private boolean mChangeCanvasToTranslucent; 831 832 private SearchEvent mSearchEvent; 833 834 private boolean mTitleReady = false; 835 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 836 837 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 838 private SpannableStringBuilder mDefaultKeySsb = null; 839 840 private ActivityManager.TaskDescription mTaskDescription = 841 new ActivityManager.TaskDescription(); 842 843 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 844 845 @SuppressWarnings("unused") 846 private final Object mInstanceTracker = StrictMode.trackActivity(this); 847 848 private Thread mUiThread; 849 850 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 851 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 852 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 853 854 private boolean mHasCurrentPermissionsRequest; 855 856 private boolean mAutoFillResetNeeded; 857 858 /** The last autofill id that was returned from {@link #getNextAutofillId()} */ 859 private int mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 860 861 private AutofillPopupWindow mAutofillPopupWindow; 862 863 private static native String getDlWarning(); 864 865 /** Return the intent that started this activity. */ 866 public Intent getIntent() { 867 return mIntent; 868 } 869 870 /** 871 * Change the intent returned by {@link #getIntent}. This holds a 872 * reference to the given intent; it does not copy it. Often used in 873 * conjunction with {@link #onNewIntent}. 874 * 875 * @param newIntent The new Intent object to return from getIntent 876 * 877 * @see #getIntent 878 * @see #onNewIntent 879 */ 880 public void setIntent(Intent newIntent) { 881 mIntent = newIntent; 882 } 883 884 /** Return the application that owns this activity. */ 885 public final Application getApplication() { 886 return mApplication; 887 } 888 889 /** Is this activity embedded inside of another activity? */ 890 public final boolean isChild() { 891 return mParent != null; 892 } 893 894 /** Return the parent activity if this view is an embedded child. */ 895 public final Activity getParent() { 896 return mParent; 897 } 898 899 /** Retrieve the window manager for showing custom windows. */ 900 public WindowManager getWindowManager() { 901 return mWindowManager; 902 } 903 904 /** 905 * Retrieve the current {@link android.view.Window} for the activity. 906 * This can be used to directly access parts of the Window API that 907 * are not available through Activity/Screen. 908 * 909 * @return Window The current window, or null if the activity is not 910 * visual. 911 */ 912 public Window getWindow() { 913 return mWindow; 914 } 915 916 /** 917 * Return the LoaderManager for this activity, creating it if needed. 918 */ 919 public LoaderManager getLoaderManager() { 920 return mFragments.getLoaderManager(); 921 } 922 923 /** 924 * Calls {@link android.view.Window#getCurrentFocus} on the 925 * Window of this Activity to return the currently focused view. 926 * 927 * @return View The current View with focus or null. 928 * 929 * @see #getWindow 930 * @see android.view.Window#getCurrentFocus 931 */ 932 @Nullable 933 public View getCurrentFocus() { 934 return mWindow != null ? mWindow.getCurrentFocus() : null; 935 } 936 937 /** 938 * (Create and) return the autofill manager 939 * 940 * @return The autofill manager 941 */ 942 @NonNull private AutofillManager getAutofillManager() { 943 if (mAutofillManager == null) { 944 mAutofillManager = getSystemService(AutofillManager.class); 945 } 946 947 return mAutofillManager; 948 } 949 950 @Override 951 protected void attachBaseContext(Context newBase) { 952 super.attachBaseContext(newBase); 953 newBase.setAutofillClient(this); 954 } 955 956 /** @hide */ 957 @Override 958 public final AutofillClient getAutofillClient() { 959 return this; 960 } 961 962 /** 963 * Called when the activity is starting. This is where most initialization 964 * should go: calling {@link #setContentView(int)} to inflate the 965 * activity's UI, using {@link #findViewById} to programmatically interact 966 * with widgets in the UI, calling 967 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 968 * cursors for data being displayed, etc. 969 * 970 * <p>You can call {@link #finish} from within this function, in 971 * which case onDestroy() will be immediately called without any of the rest 972 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 973 * {@link #onPause}, etc) executing. 974 * 975 * <p><em>Derived classes must call through to the super class's 976 * implementation of this method. If they do not, an exception will be 977 * thrown.</em></p> 978 * 979 * @param savedInstanceState If the activity is being re-initialized after 980 * previously being shut down then this Bundle contains the data it most 981 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 982 * 983 * @see #onStart 984 * @see #onSaveInstanceState 985 * @see #onRestoreInstanceState 986 * @see #onPostCreate 987 */ 988 @MainThread 989 @CallSuper 990 protected void onCreate(@Nullable Bundle savedInstanceState) { 991 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 992 993 if (mLastNonConfigurationInstances != null) { 994 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 995 } 996 if (mActivityInfo.parentActivityName != null) { 997 if (mActionBar == null) { 998 mEnableDefaultActionBarUp = true; 999 } else { 1000 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 1001 } 1002 } 1003 if (savedInstanceState != null) { 1004 mAutoFillResetNeeded = savedInstanceState.getBoolean(AUTOFILL_RESET_NEEDED, false); 1005 mLastAutofillId = savedInstanceState.getInt(LAST_AUTOFILL_ID, 1006 View.LAST_APP_AUTOFILL_ID); 1007 1008 if (mAutoFillResetNeeded) { 1009 getAutofillManager().onCreate(savedInstanceState); 1010 } 1011 1012 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 1013 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 1014 ? mLastNonConfigurationInstances.fragments : null); 1015 } 1016 mFragments.dispatchCreate(); 1017 getApplication().dispatchActivityCreated(this, savedInstanceState); 1018 if (mVoiceInteractor != null) { 1019 mVoiceInteractor.attachActivity(this); 1020 } 1021 mRestoredFromBundle = savedInstanceState != null; 1022 mCalled = true; 1023 } 1024 1025 /** 1026 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 1027 * the attribute {@link android.R.attr#persistableMode} set to 1028 * <code>persistAcrossReboots</code>. 1029 * 1030 * @param savedInstanceState if the activity is being re-initialized after 1031 * previously being shut down then this Bundle contains the data it most 1032 * recently supplied in {@link #onSaveInstanceState}. 1033 * <b><i>Note: Otherwise it is null.</i></b> 1034 * @param persistentState if the activity is being re-initialized after 1035 * previously being shut down or powered off then this Bundle contains the data it most 1036 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 1037 * <b><i>Note: Otherwise it is null.</i></b> 1038 * 1039 * @see #onCreate(android.os.Bundle) 1040 * @see #onStart 1041 * @see #onSaveInstanceState 1042 * @see #onRestoreInstanceState 1043 * @see #onPostCreate 1044 */ 1045 public void onCreate(@Nullable Bundle savedInstanceState, 1046 @Nullable PersistableBundle persistentState) { 1047 onCreate(savedInstanceState); 1048 } 1049 1050 /** 1051 * The hook for {@link ActivityThread} to restore the state of this activity. 1052 * 1053 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1054 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1055 * 1056 * @param savedInstanceState contains the saved state 1057 */ 1058 final void performRestoreInstanceState(Bundle savedInstanceState) { 1059 onRestoreInstanceState(savedInstanceState); 1060 restoreManagedDialogs(savedInstanceState); 1061 } 1062 1063 /** 1064 * The hook for {@link ActivityThread} to restore the state of this activity. 1065 * 1066 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1067 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1068 * 1069 * @param savedInstanceState contains the saved state 1070 * @param persistentState contains the persistable saved state 1071 */ 1072 final void performRestoreInstanceState(Bundle savedInstanceState, 1073 PersistableBundle persistentState) { 1074 onRestoreInstanceState(savedInstanceState, persistentState); 1075 if (savedInstanceState != null) { 1076 restoreManagedDialogs(savedInstanceState); 1077 } 1078 } 1079 1080 /** 1081 * This method is called after {@link #onStart} when the activity is 1082 * being re-initialized from a previously saved state, given here in 1083 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1084 * to restore their state, but it is sometimes convenient to do it here 1085 * after all of the initialization has been done or to allow subclasses to 1086 * decide whether to use your default implementation. The default 1087 * implementation of this method performs a restore of any view state that 1088 * had previously been frozen by {@link #onSaveInstanceState}. 1089 * 1090 * <p>This method is called between {@link #onStart} and 1091 * {@link #onPostCreate}. 1092 * 1093 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1094 * 1095 * @see #onCreate 1096 * @see #onPostCreate 1097 * @see #onResume 1098 * @see #onSaveInstanceState 1099 */ 1100 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1101 if (mWindow != null) { 1102 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1103 if (windowState != null) { 1104 mWindow.restoreHierarchyState(windowState); 1105 } 1106 } 1107 } 1108 1109 /** 1110 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1111 * created with the attribute {@link android.R.attr#persistableMode} set to 1112 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1113 * came from the restored PersistableBundle first 1114 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1115 * 1116 * <p>This method is called between {@link #onStart} and 1117 * {@link #onPostCreate}. 1118 * 1119 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1120 * 1121 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1122 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1123 * 1124 * @see #onRestoreInstanceState(Bundle) 1125 * @see #onCreate 1126 * @see #onPostCreate 1127 * @see #onResume 1128 * @see #onSaveInstanceState 1129 */ 1130 public void onRestoreInstanceState(Bundle savedInstanceState, 1131 PersistableBundle persistentState) { 1132 if (savedInstanceState != null) { 1133 onRestoreInstanceState(savedInstanceState); 1134 } 1135 } 1136 1137 /** 1138 * Restore the state of any saved managed dialogs. 1139 * 1140 * @param savedInstanceState The bundle to restore from. 1141 */ 1142 private void restoreManagedDialogs(Bundle savedInstanceState) { 1143 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1144 if (b == null) { 1145 return; 1146 } 1147 1148 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1149 final int numDialogs = ids.length; 1150 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1151 for (int i = 0; i < numDialogs; i++) { 1152 final Integer dialogId = ids[i]; 1153 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1154 if (dialogState != null) { 1155 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1156 // so tell createDialog() not to do it, otherwise we get an exception 1157 final ManagedDialog md = new ManagedDialog(); 1158 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1159 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1160 if (md.mDialog != null) { 1161 mManagedDialogs.put(dialogId, md); 1162 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1163 md.mDialog.onRestoreInstanceState(dialogState); 1164 } 1165 } 1166 } 1167 } 1168 1169 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1170 final Dialog dialog = onCreateDialog(dialogId, args); 1171 if (dialog == null) { 1172 return null; 1173 } 1174 dialog.dispatchOnCreate(state); 1175 return dialog; 1176 } 1177 1178 private static String savedDialogKeyFor(int key) { 1179 return SAVED_DIALOG_KEY_PREFIX + key; 1180 } 1181 1182 private static String savedDialogArgsKeyFor(int key) { 1183 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1184 } 1185 1186 /** 1187 * Called when activity start-up is complete (after {@link #onStart} 1188 * and {@link #onRestoreInstanceState} have been called). Applications will 1189 * generally not implement this method; it is intended for system 1190 * classes to do final initialization after application code has run. 1191 * 1192 * <p><em>Derived classes must call through to the super class's 1193 * implementation of this method. If they do not, an exception will be 1194 * thrown.</em></p> 1195 * 1196 * @param savedInstanceState If the activity is being re-initialized after 1197 * previously being shut down then this Bundle contains the data it most 1198 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1199 * @see #onCreate 1200 */ 1201 @CallSuper 1202 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1203 if (!isChild()) { 1204 mTitleReady = true; 1205 onTitleChanged(getTitle(), getTitleColor()); 1206 } 1207 1208 mCalled = true; 1209 } 1210 1211 /** 1212 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1213 * created with the attribute {@link android.R.attr#persistableMode} set to 1214 * <code>persistAcrossReboots</code>. 1215 * 1216 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1217 * @param persistentState The data caming from the PersistableBundle first 1218 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1219 * 1220 * @see #onCreate 1221 */ 1222 public void onPostCreate(@Nullable Bundle savedInstanceState, 1223 @Nullable PersistableBundle persistentState) { 1224 onPostCreate(savedInstanceState); 1225 } 1226 1227 /** 1228 * Called after {@link #onCreate} — or after {@link #onRestart} when 1229 * the activity had been stopped, but is now again being displayed to the 1230 * user. It will be followed by {@link #onResume}. 1231 * 1232 * <p><em>Derived classes must call through to the super class's 1233 * implementation of this method. If they do not, an exception will be 1234 * thrown.</em></p> 1235 * 1236 * @see #onCreate 1237 * @see #onStop 1238 * @see #onResume 1239 */ 1240 @CallSuper 1241 protected void onStart() { 1242 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1243 mCalled = true; 1244 1245 mFragments.doLoaderStart(); 1246 1247 getApplication().dispatchActivityStarted(this); 1248 1249 if (mAutoFillResetNeeded) { 1250 AutofillManager afm = getAutofillManager(); 1251 if (afm != null) { 1252 afm.onVisibleForAutofill(); 1253 } 1254 } 1255 } 1256 1257 /** 1258 * Called after {@link #onStop} when the current activity is being 1259 * re-displayed to the user (the user has navigated back to it). It will 1260 * be followed by {@link #onStart} and then {@link #onResume}. 1261 * 1262 * <p>For activities that are using raw {@link Cursor} objects (instead of 1263 * creating them through 1264 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1265 * this is usually the place 1266 * where the cursor should be requeried (because you had deactivated it in 1267 * {@link #onStop}. 1268 * 1269 * <p><em>Derived classes must call through to the super class's 1270 * implementation of this method. If they do not, an exception will be 1271 * thrown.</em></p> 1272 * 1273 * @see #onStop 1274 * @see #onStart 1275 * @see #onResume 1276 */ 1277 @CallSuper 1278 protected void onRestart() { 1279 mCalled = true; 1280 } 1281 1282 /** 1283 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1284 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1285 * to give the activity a hint that its state is no longer saved -- it will generally 1286 * be called after {@link #onSaveInstanceState} and prior to the activity being 1287 * resumed/started again. 1288 */ 1289 public void onStateNotSaved() { 1290 } 1291 1292 /** 1293 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1294 * {@link #onPause}, for your activity to start interacting with the user. 1295 * This is a good place to begin animations, open exclusive-access devices 1296 * (such as the camera), etc. 1297 * 1298 * <p>Keep in mind that onResume is not the best indicator that your activity 1299 * is visible to the user; a system window such as the keyguard may be in 1300 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1301 * activity is visible to the user (for example, to resume a game). 1302 * 1303 * <p><em>Derived classes must call through to the super class's 1304 * implementation of this method. If they do not, an exception will be 1305 * thrown.</em></p> 1306 * 1307 * @see #onRestoreInstanceState 1308 * @see #onRestart 1309 * @see #onPostResume 1310 * @see #onPause 1311 */ 1312 @CallSuper 1313 protected void onResume() { 1314 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1315 getApplication().dispatchActivityResumed(this); 1316 mActivityTransitionState.onResume(this, isTopOfTask()); 1317 mCalled = true; 1318 } 1319 1320 /** 1321 * Called when activity resume is complete (after {@link #onResume} has 1322 * been called). Applications will generally not implement this method; 1323 * it is intended for system classes to do final setup after application 1324 * resume code has run. 1325 * 1326 * <p><em>Derived classes must call through to the super class's 1327 * implementation of this method. If they do not, an exception will be 1328 * thrown.</em></p> 1329 * 1330 * @see #onResume 1331 */ 1332 @CallSuper 1333 protected void onPostResume() { 1334 final Window win = getWindow(); 1335 if (win != null) win.makeActive(); 1336 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1337 mCalled = true; 1338 } 1339 1340 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1341 if (mVoiceInteractor != null) { 1342 for (Request activeRequest: mVoiceInteractor.getActiveRequests()) { 1343 activeRequest.cancel(); 1344 activeRequest.clear(); 1345 } 1346 } 1347 if (voiceInteractor == null) { 1348 mVoiceInteractor = null; 1349 } else { 1350 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1351 Looper.myLooper()); 1352 } 1353 } 1354 1355 /** 1356 * Gets the next autofill ID. 1357 * 1358 * <p>All IDs will be bigger than {@link View#LAST_APP_AUTOFILL_ID}. All IDs returned 1359 * will be unique. 1360 * 1361 * @return A ID that is unique in the activity 1362 * 1363 * {@hide} 1364 */ 1365 public int getNextAutofillId() { 1366 if (mLastAutofillId == Integer.MAX_VALUE - 1) { 1367 mLastAutofillId = View.LAST_APP_AUTOFILL_ID; 1368 } 1369 1370 mLastAutofillId++; 1371 1372 return mLastAutofillId; 1373 } 1374 1375 /** 1376 * Check whether this activity is running as part of a voice interaction with the user. 1377 * If true, it should perform its interaction with the user through the 1378 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1379 */ 1380 public boolean isVoiceInteraction() { 1381 return mVoiceInteractor != null; 1382 } 1383 1384 /** 1385 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1386 * of a voice interaction. That is, returns true if this activity was directly 1387 * started by the voice interaction service as the initiation of a voice interaction. 1388 * Otherwise, for example if it was started by another activity while under voice 1389 * interaction, returns false. 1390 */ 1391 public boolean isVoiceInteractionRoot() { 1392 try { 1393 return mVoiceInteractor != null 1394 && ActivityManager.getService().isRootVoiceInteraction(mToken); 1395 } catch (RemoteException e) { 1396 } 1397 return false; 1398 } 1399 1400 /** 1401 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1402 * interact with this activity. 1403 */ 1404 public VoiceInteractor getVoiceInteractor() { 1405 return mVoiceInteractor; 1406 } 1407 1408 /** 1409 * Queries whether the currently enabled voice interaction service supports returning 1410 * a voice interactor for use by the activity. This is valid only for the duration of the 1411 * activity. 1412 * 1413 * @return whether the current voice interaction service supports local voice interaction 1414 */ 1415 public boolean isLocalVoiceInteractionSupported() { 1416 try { 1417 return ActivityManager.getService().supportsLocalVoiceInteraction(); 1418 } catch (RemoteException re) { 1419 } 1420 return false; 1421 } 1422 1423 /** 1424 * Starts a local voice interaction session. When ready, 1425 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1426 * to the registered voice interaction service. 1427 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1428 */ 1429 public void startLocalVoiceInteraction(Bundle privateOptions) { 1430 try { 1431 ActivityManager.getService().startLocalVoiceInteraction(mToken, privateOptions); 1432 } catch (RemoteException re) { 1433 } 1434 } 1435 1436 /** 1437 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1438 * voice interaction session being started. You can now retrieve a voice interactor using 1439 * {@link #getVoiceInteractor()}. 1440 */ 1441 public void onLocalVoiceInteractionStarted() { 1442 } 1443 1444 /** 1445 * Callback to indicate that the local voice interaction has stopped either 1446 * because it was requested through a call to {@link #stopLocalVoiceInteraction()} 1447 * or because it was canceled by the user. The previously acquired {@link VoiceInteractor} 1448 * is no longer valid after this. 1449 */ 1450 public void onLocalVoiceInteractionStopped() { 1451 } 1452 1453 /** 1454 * Request to terminate the current voice interaction that was previously started 1455 * using {@link #startLocalVoiceInteraction(Bundle)}. When the interaction is 1456 * terminated, {@link #onLocalVoiceInteractionStopped()} will be called. 1457 */ 1458 public void stopLocalVoiceInteraction() { 1459 try { 1460 ActivityManager.getService().stopLocalVoiceInteraction(mToken); 1461 } catch (RemoteException re) { 1462 } 1463 } 1464 1465 /** 1466 * This is called for activities that set launchMode to "singleTop" in 1467 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1468 * flag when calling {@link #startActivity}. In either case, when the 1469 * activity is re-launched while at the top of the activity stack instead 1470 * of a new instance of the activity being started, onNewIntent() will be 1471 * called on the existing instance with the Intent that was used to 1472 * re-launch it. 1473 * 1474 * <p>An activity will always be paused before receiving a new intent, so 1475 * you can count on {@link #onResume} being called after this method. 1476 * 1477 * <p>Note that {@link #getIntent} still returns the original Intent. You 1478 * can use {@link #setIntent} to update it to this new Intent. 1479 * 1480 * @param intent The new intent that was started for the activity. 1481 * 1482 * @see #getIntent 1483 * @see #setIntent 1484 * @see #onResume 1485 */ 1486 protected void onNewIntent(Intent intent) { 1487 } 1488 1489 /** 1490 * The hook for {@link ActivityThread} to save the state of this activity. 1491 * 1492 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1493 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1494 * 1495 * @param outState The bundle to save the state to. 1496 */ 1497 final void performSaveInstanceState(Bundle outState) { 1498 onSaveInstanceState(outState); 1499 saveManagedDialogs(outState); 1500 mActivityTransitionState.saveState(outState); 1501 storeHasCurrentPermissionRequest(outState); 1502 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1503 } 1504 1505 /** 1506 * The hook for {@link ActivityThread} to save the state of this activity. 1507 * 1508 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1509 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1510 * 1511 * @param outState The bundle to save the state to. 1512 * @param outPersistentState The bundle to save persistent state to. 1513 */ 1514 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1515 onSaveInstanceState(outState, outPersistentState); 1516 saveManagedDialogs(outState); 1517 storeHasCurrentPermissionRequest(outState); 1518 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1519 ", " + outPersistentState); 1520 } 1521 1522 /** 1523 * Called to retrieve per-instance state from an activity before being killed 1524 * so that the state can be restored in {@link #onCreate} or 1525 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1526 * will be passed to both). 1527 * 1528 * <p>This method is called before an activity may be killed so that when it 1529 * comes back some time in the future it can restore its state. For example, 1530 * if activity B is launched in front of activity A, and at some point activity 1531 * A is killed to reclaim resources, activity A will have a chance to save the 1532 * current state of its user interface via this method so that when the user 1533 * returns to activity A, the state of the user interface can be restored 1534 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1535 * 1536 * <p>Do not confuse this method with activity lifecycle callbacks such as 1537 * {@link #onPause}, which is always called when an activity is being placed 1538 * in the background or on its way to destruction, or {@link #onStop} which 1539 * is called before destruction. One example of when {@link #onPause} and 1540 * {@link #onStop} is called and not this method is when a user navigates back 1541 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1542 * on B because that particular instance will never be restored, so the 1543 * system avoids calling it. An example when {@link #onPause} is called and 1544 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1545 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1546 * killed during the lifetime of B since the state of the user interface of 1547 * A will stay intact. 1548 * 1549 * <p>The default implementation takes care of most of the UI per-instance 1550 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1551 * view in the hierarchy that has an id, and by saving the id of the currently 1552 * focused view (all of which is restored by the default implementation of 1553 * {@link #onRestoreInstanceState}). If you override this method to save additional 1554 * information not captured by each individual view, you will likely want to 1555 * call through to the default implementation, otherwise be prepared to save 1556 * all of the state of each view yourself. 1557 * 1558 * <p>If called, this method will occur before {@link #onStop}. There are 1559 * no guarantees about whether it will occur before or after {@link #onPause}. 1560 * 1561 * @param outState Bundle in which to place your saved state. 1562 * 1563 * @see #onCreate 1564 * @see #onRestoreInstanceState 1565 * @see #onPause 1566 */ 1567 protected void onSaveInstanceState(Bundle outState) { 1568 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1569 1570 outState.putInt(LAST_AUTOFILL_ID, mLastAutofillId); 1571 Parcelable p = mFragments.saveAllState(); 1572 if (p != null) { 1573 outState.putParcelable(FRAGMENTS_TAG, p); 1574 } 1575 if (mAutoFillResetNeeded) { 1576 outState.putBoolean(AUTOFILL_RESET_NEEDED, true); 1577 getAutofillManager().onSaveInstanceState(outState); 1578 } 1579 getApplication().dispatchActivitySaveInstanceState(this, outState); 1580 } 1581 1582 /** 1583 * This is the same as {@link #onSaveInstanceState} but is called for activities 1584 * created with the attribute {@link android.R.attr#persistableMode} set to 1585 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1586 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1587 * the first time that this activity is restarted following the next device reboot. 1588 * 1589 * @param outState Bundle in which to place your saved state. 1590 * @param outPersistentState State which will be saved across reboots. 1591 * 1592 * @see #onSaveInstanceState(Bundle) 1593 * @see #onCreate 1594 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1595 * @see #onPause 1596 */ 1597 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1598 onSaveInstanceState(outState); 1599 } 1600 1601 /** 1602 * Save the state of any managed dialogs. 1603 * 1604 * @param outState place to store the saved state. 1605 */ 1606 private void saveManagedDialogs(Bundle outState) { 1607 if (mManagedDialogs == null) { 1608 return; 1609 } 1610 1611 final int numDialogs = mManagedDialogs.size(); 1612 if (numDialogs == 0) { 1613 return; 1614 } 1615 1616 Bundle dialogState = new Bundle(); 1617 1618 int[] ids = new int[mManagedDialogs.size()]; 1619 1620 // save each dialog's bundle, gather the ids 1621 for (int i = 0; i < numDialogs; i++) { 1622 final int key = mManagedDialogs.keyAt(i); 1623 ids[i] = key; 1624 final ManagedDialog md = mManagedDialogs.valueAt(i); 1625 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1626 if (md.mArgs != null) { 1627 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1628 } 1629 } 1630 1631 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1632 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1633 } 1634 1635 1636 /** 1637 * Called as part of the activity lifecycle when an activity is going into 1638 * the background, but has not (yet) been killed. The counterpart to 1639 * {@link #onResume}. 1640 * 1641 * <p>When activity B is launched in front of activity A, this callback will 1642 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1643 * so be sure to not do anything lengthy here. 1644 * 1645 * <p>This callback is mostly used for saving any persistent state the 1646 * activity is editing, to present a "edit in place" model to the user and 1647 * making sure nothing is lost if there are not enough resources to start 1648 * the new activity without first killing this one. This is also a good 1649 * place to do things like stop animations and other things that consume a 1650 * noticeable amount of CPU in order to make the switch to the next activity 1651 * as fast as possible, or to close resources that are exclusive access 1652 * such as the camera. 1653 * 1654 * <p>In situations where the system needs more memory it may kill paused 1655 * processes to reclaim resources. Because of this, you should be sure 1656 * that all of your state is saved by the time you return from 1657 * this function. In general {@link #onSaveInstanceState} is used to save 1658 * per-instance state in the activity and this method is used to store 1659 * global persistent data (in content providers, files, etc.) 1660 * 1661 * <p>After receiving this call you will usually receive a following call 1662 * to {@link #onStop} (after the next activity has been resumed and 1663 * displayed), however in some cases there will be a direct call back to 1664 * {@link #onResume} without going through the stopped state. 1665 * 1666 * <p><em>Derived classes must call through to the super class's 1667 * implementation of this method. If they do not, an exception will be 1668 * thrown.</em></p> 1669 * 1670 * @see #onResume 1671 * @see #onSaveInstanceState 1672 * @see #onStop 1673 */ 1674 @CallSuper 1675 protected void onPause() { 1676 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1677 getApplication().dispatchActivityPaused(this); 1678 mCalled = true; 1679 } 1680 1681 /** 1682 * Called as part of the activity lifecycle when an activity is about to go 1683 * into the background as the result of user choice. For example, when the 1684 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1685 * when an incoming phone call causes the in-call Activity to be automatically 1686 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1687 * the activity being interrupted. In cases when it is invoked, this method 1688 * is called right before the activity's {@link #onPause} callback. 1689 * 1690 * <p>This callback and {@link #onUserInteraction} are intended to help 1691 * activities manage status bar notifications intelligently; specifically, 1692 * for helping activities determine the proper time to cancel a notfication. 1693 * 1694 * @see #onUserInteraction() 1695 */ 1696 protected void onUserLeaveHint() { 1697 } 1698 1699 /** 1700 * Generate a new thumbnail for this activity. This method is called before 1701 * pausing the activity, and should draw into <var>outBitmap</var> the 1702 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1703 * can use the given <var>canvas</var>, which is configured to draw into the 1704 * bitmap, for rendering if desired. 1705 * 1706 * <p>The default implementation returns fails and does not draw a thumbnail; 1707 * this will result in the platform creating its own thumbnail if needed. 1708 * 1709 * @param outBitmap The bitmap to contain the thumbnail. 1710 * @param canvas Can be used to render into the bitmap. 1711 * 1712 * @return Return true if you have drawn into the bitmap; otherwise after 1713 * you return it will be filled with a default thumbnail. 1714 * 1715 * @see #onCreateDescription 1716 * @see #onSaveInstanceState 1717 * @see #onPause 1718 */ 1719 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1720 return false; 1721 } 1722 1723 /** 1724 * Generate a new description for this activity. This method is called 1725 * before pausing the activity and can, if desired, return some textual 1726 * description of its current state to be displayed to the user. 1727 * 1728 * <p>The default implementation returns null, which will cause you to 1729 * inherit the description from the previous activity. If all activities 1730 * return null, generally the label of the top activity will be used as the 1731 * description. 1732 * 1733 * @return A description of what the user is doing. It should be short and 1734 * sweet (only a few words). 1735 * 1736 * @see #onCreateThumbnail 1737 * @see #onSaveInstanceState 1738 * @see #onPause 1739 */ 1740 @Nullable 1741 public CharSequence onCreateDescription() { 1742 return null; 1743 } 1744 1745 /** 1746 * This is called when the user is requesting an assist, to build a full 1747 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1748 * application. You can override this method to place into the bundle anything 1749 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1750 * of the assist Intent. 1751 * 1752 * <p>This function will be called after any global assist callbacks that had 1753 * been registered with {@link Application#registerOnProvideAssistDataListener 1754 * Application.registerOnProvideAssistDataListener}. 1755 */ 1756 public void onProvideAssistData(Bundle data) { 1757 } 1758 1759 /** 1760 * This is called when the user is requesting an assist, to provide references 1761 * to content related to the current activity. Before being called, the 1762 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1763 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1764 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1765 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1766 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1767 * 1768 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1769 * context of the activity, and fill in its ClipData with additional content of 1770 * interest that the user is currently viewing. For example, an image gallery application 1771 * that has launched in to an activity allowing the user to swipe through pictures should 1772 * modify the intent to reference the current image they are looking it; such an 1773 * application when showing a list of pictures should add a ClipData that has 1774 * references to all of the pictures currently visible on screen.</p> 1775 * 1776 * @param outContent The assist content to return. 1777 */ 1778 public void onProvideAssistContent(AssistContent outContent) { 1779 } 1780 1781 /** 1782 * Request the Keyboard Shortcuts screen to show up. This will trigger 1783 * {@link #onProvideKeyboardShortcuts} to retrieve the shortcuts for the foreground activity. 1784 */ 1785 public final void requestShowKeyboardShortcuts() { 1786 Intent intent = new Intent(Intent.ACTION_SHOW_KEYBOARD_SHORTCUTS); 1787 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1788 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1789 } 1790 1791 /** 1792 * Dismiss the Keyboard Shortcuts screen. 1793 */ 1794 public final void dismissKeyboardShortcutsHelper() { 1795 Intent intent = new Intent(Intent.ACTION_DISMISS_KEYBOARD_SHORTCUTS); 1796 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1797 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1798 } 1799 1800 @Override 1801 public void onProvideKeyboardShortcuts( 1802 List<KeyboardShortcutGroup> data, Menu menu, int deviceId) { 1803 if (menu == null) { 1804 return; 1805 } 1806 KeyboardShortcutGroup group = null; 1807 int menuSize = menu.size(); 1808 for (int i = 0; i < menuSize; ++i) { 1809 final MenuItem item = menu.getItem(i); 1810 final CharSequence title = item.getTitle(); 1811 final char alphaShortcut = item.getAlphabeticShortcut(); 1812 final int alphaModifiers = item.getAlphabeticModifiers(); 1813 if (title != null && alphaShortcut != MIN_VALUE) { 1814 if (group == null) { 1815 final int resource = mApplication.getApplicationInfo().labelRes; 1816 group = new KeyboardShortcutGroup(resource != 0 ? getString(resource) : null); 1817 } 1818 group.addItem(new KeyboardShortcutInfo( 1819 title, alphaShortcut, alphaModifiers)); 1820 } 1821 } 1822 if (group != null) { 1823 data.add(group); 1824 } 1825 } 1826 1827 /** 1828 * Ask to have the current assistant shown to the user. This only works if the calling 1829 * activity is the current foreground activity. It is the same as calling 1830 * {@link android.service.voice.VoiceInteractionService#showSession 1831 * VoiceInteractionService.showSession} and requesting all of the possible context. 1832 * The receiver will always see 1833 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1834 * @return Returns true if the assistant was successfully invoked, else false. For example 1835 * false will be returned if the caller is not the current top activity. 1836 */ 1837 public boolean showAssist(Bundle args) { 1838 try { 1839 return ActivityManager.getService().showAssistFromActivity(mToken, args); 1840 } catch (RemoteException e) { 1841 } 1842 return false; 1843 } 1844 1845 /** 1846 * Called when you are no longer visible to the user. You will next 1847 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1848 * depending on later user activity. 1849 * 1850 * <p><em>Derived classes must call through to the super class's 1851 * implementation of this method. If they do not, an exception will be 1852 * thrown.</em></p> 1853 * 1854 * @see #onRestart 1855 * @see #onResume 1856 * @see #onSaveInstanceState 1857 * @see #onDestroy 1858 */ 1859 @CallSuper 1860 protected void onStop() { 1861 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1862 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1863 mActivityTransitionState.onStop(); 1864 getApplication().dispatchActivityStopped(this); 1865 mTranslucentCallback = null; 1866 mCalled = true; 1867 1868 if (isFinishing()) { 1869 if (mAutoFillResetNeeded) { 1870 getAutofillManager().onActivityFinished(); 1871 } else if (mIntent != null 1872 && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 1873 // Activity was launched when user tapped a link in the Autofill Save UI - since 1874 // user launched another activity, the Save UI should not be restored when this 1875 // activity is finished. 1876 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_CANCEL, 1877 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 1878 } 1879 } 1880 } 1881 1882 /** 1883 * Perform any final cleanup before an activity is destroyed. This can 1884 * happen either because the activity is finishing (someone called 1885 * {@link #finish} on it, or because the system is temporarily destroying 1886 * this instance of the activity to save space. You can distinguish 1887 * between these two scenarios with the {@link #isFinishing} method. 1888 * 1889 * <p><em>Note: do not count on this method being called as a place for 1890 * saving data! For example, if an activity is editing data in a content 1891 * provider, those edits should be committed in either {@link #onPause} or 1892 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1893 * free resources like threads that are associated with an activity, so 1894 * that a destroyed activity does not leave such things around while the 1895 * rest of its application is still running. There are situations where 1896 * the system will simply kill the activity's hosting process without 1897 * calling this method (or any others) in it, so it should not be used to 1898 * do things that are intended to remain around after the process goes 1899 * away. 1900 * 1901 * <p><em>Derived classes must call through to the super class's 1902 * implementation of this method. If they do not, an exception will be 1903 * thrown.</em></p> 1904 * 1905 * @see #onPause 1906 * @see #onStop 1907 * @see #finish 1908 * @see #isFinishing 1909 */ 1910 @CallSuper 1911 protected void onDestroy() { 1912 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1913 mCalled = true; 1914 1915 // dismiss any dialogs we are managing. 1916 if (mManagedDialogs != null) { 1917 final int numDialogs = mManagedDialogs.size(); 1918 for (int i = 0; i < numDialogs; i++) { 1919 final ManagedDialog md = mManagedDialogs.valueAt(i); 1920 if (md.mDialog.isShowing()) { 1921 md.mDialog.dismiss(); 1922 } 1923 } 1924 mManagedDialogs = null; 1925 } 1926 1927 // close any cursors we are managing. 1928 synchronized (mManagedCursors) { 1929 int numCursors = mManagedCursors.size(); 1930 for (int i = 0; i < numCursors; i++) { 1931 ManagedCursor c = mManagedCursors.get(i); 1932 if (c != null) { 1933 c.mCursor.close(); 1934 } 1935 } 1936 mManagedCursors.clear(); 1937 } 1938 1939 // Close any open search dialog 1940 if (mSearchManager != null) { 1941 mSearchManager.stopSearch(); 1942 } 1943 1944 if (mActionBar != null) { 1945 mActionBar.onDestroy(); 1946 } 1947 1948 getApplication().dispatchActivityDestroyed(this); 1949 } 1950 1951 /** 1952 * Report to the system that your app is now fully drawn, purely for diagnostic 1953 * purposes (calling it does not impact the visible behavior of the activity). 1954 * This is only used to help instrument application launch times, so that the 1955 * app can report when it is fully in a usable state; without this, the only thing 1956 * the system itself can determine is the point at which the activity's window 1957 * is <em>first</em> drawn and displayed. To participate in app launch time 1958 * measurement, you should always call this method after first launch (when 1959 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1960 * entirely drawn your UI and populated with all of the significant data. You 1961 * can safely call this method any time after first launch as well, in which case 1962 * it will simply be ignored. 1963 */ 1964 public void reportFullyDrawn() { 1965 if (mDoReportFullyDrawn) { 1966 mDoReportFullyDrawn = false; 1967 try { 1968 ActivityManager.getService().reportActivityFullyDrawn(mToken, mRestoredFromBundle); 1969 } catch (RemoteException e) { 1970 } 1971 } 1972 } 1973 1974 /** 1975 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1976 * visa-versa. This method provides the same configuration that will be sent in the following 1977 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 1978 * 1979 * @see android.R.attr#resizeableActivity 1980 * 1981 * @param isInMultiWindowMode True if the activity is in multi-window mode. 1982 * @param newConfig The new configuration of the activity with the state 1983 * {@param isInMultiWindowMode}. 1984 */ 1985 public void onMultiWindowModeChanged(boolean isInMultiWindowMode, Configuration newConfig) { 1986 // Left deliberately empty. There should be no side effects if a direct 1987 // subclass of Activity does not call super. 1988 onMultiWindowModeChanged(isInMultiWindowMode); 1989 } 1990 1991 /** 1992 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1993 * visa-versa. 1994 * 1995 * @see android.R.attr#resizeableActivity 1996 * 1997 * @param isInMultiWindowMode True if the activity is in multi-window mode. 1998 * 1999 * @deprecated Use {@link #onMultiWindowModeChanged(boolean, Configuration)} instead. 2000 */ 2001 @Deprecated 2002 public void onMultiWindowModeChanged(boolean isInMultiWindowMode) { 2003 // Left deliberately empty. There should be no side effects if a direct 2004 // subclass of Activity does not call super. 2005 } 2006 2007 /** 2008 * Returns true if the activity is currently in multi-window mode. 2009 * @see android.R.attr#resizeableActivity 2010 * 2011 * @return True if the activity is in multi-window mode. 2012 */ 2013 public boolean isInMultiWindowMode() { 2014 try { 2015 return ActivityManager.getService().isInMultiWindowMode(mToken); 2016 } catch (RemoteException e) { 2017 } 2018 return false; 2019 } 2020 2021 /** 2022 * Called by the system when the activity changes to and from picture-in-picture mode. This 2023 * method provides the same configuration that will be sent in the following 2024 * {@link #onConfigurationChanged(Configuration)} call after the activity enters this mode. 2025 * 2026 * @see android.R.attr#supportsPictureInPicture 2027 * 2028 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2029 * @param newConfig The new configuration of the activity with the state 2030 * {@param isInPictureInPictureMode}. 2031 */ 2032 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode, 2033 Configuration newConfig) { 2034 // Left deliberately empty. There should be no side effects if a direct 2035 // subclass of Activity does not call super. 2036 onPictureInPictureModeChanged(isInPictureInPictureMode); 2037 } 2038 2039 /** 2040 * Called by the system when the activity changes to and from picture-in-picture mode. 2041 * 2042 * @see android.R.attr#supportsPictureInPicture 2043 * 2044 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 2045 * 2046 * @deprecated Use {@link #onPictureInPictureModeChanged(boolean, Configuration)} instead. 2047 */ 2048 @Deprecated 2049 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 2050 // Left deliberately empty. There should be no side effects if a direct 2051 // subclass of Activity does not call super. 2052 } 2053 2054 /** 2055 * Returns true if the activity is currently in picture-in-picture mode. 2056 * @see android.R.attr#supportsPictureInPicture 2057 * 2058 * @return True if the activity is in picture-in-picture mode. 2059 */ 2060 public boolean isInPictureInPictureMode() { 2061 try { 2062 return ActivityManager.getService().isInPictureInPictureMode(mToken); 2063 } catch (RemoteException e) { 2064 } 2065 return false; 2066 } 2067 2068 /** 2069 * Puts the activity in picture-in-picture mode if possible in the current system state. Any 2070 * prior calls to {@link #setPictureInPictureParams(PictureInPictureParams)} will still apply 2071 * when entering picture-in-picture through this call. 2072 * 2073 * @see #enterPictureInPictureMode(PictureInPictureParams) 2074 * @see android.R.attr#supportsPictureInPicture 2075 */ 2076 @Deprecated 2077 public void enterPictureInPictureMode() { 2078 enterPictureInPictureMode(new PictureInPictureParams.Builder().build()); 2079 } 2080 2081 /** @removed */ 2082 @Deprecated 2083 public boolean enterPictureInPictureMode(@NonNull PictureInPictureArgs args) { 2084 return enterPictureInPictureMode(PictureInPictureArgs.convert(args)); 2085 } 2086 2087 /** 2088 * Puts the activity in picture-in-picture mode if possible in the current system state. The 2089 * set parameters in {@param params} will be combined with the parameters from prior calls to 2090 * {@link #setPictureInPictureParams(PictureInPictureParams)}. 2091 * 2092 * The system may disallow entering picture-in-picture in various cases, including when the 2093 * activity is not visible, if the screen is locked or if the user has an activity pinned. 2094 * 2095 * @see android.R.attr#supportsPictureInPicture 2096 * @see PictureInPictureParams 2097 * 2098 * @param params non-null parameters to be combined with previously set parameters when entering 2099 * picture-in-picture. 2100 * 2101 * @return true if the system puts this activity into picture-in-picture mode or was already 2102 * in picture-in-picture mode (@see {@link #isInPictureInPictureMode()) 2103 */ 2104 public boolean enterPictureInPictureMode(@NonNull PictureInPictureParams params) { 2105 try { 2106 if (params == null) { 2107 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2108 } 2109 if (!mCanEnterPictureInPicture) { 2110 throw new IllegalStateException("Activity must be resumed to enter" 2111 + " picture-in-picture"); 2112 } 2113 return ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken, params); 2114 } catch (RemoteException e) { 2115 return false; 2116 } 2117 } 2118 2119 /** @removed */ 2120 @Deprecated 2121 public void setPictureInPictureArgs(@NonNull PictureInPictureArgs args) { 2122 setPictureInPictureParams(PictureInPictureArgs.convert(args)); 2123 } 2124 2125 /** 2126 * Updates the properties of the picture-in-picture activity, or sets it to be used later when 2127 * {@link #enterPictureInPictureMode()} is called. 2128 * 2129 * @param params the new parameters for the picture-in-picture. 2130 */ 2131 public void setPictureInPictureParams(@NonNull PictureInPictureParams params) { 2132 try { 2133 if (params == null) { 2134 throw new IllegalArgumentException("Expected non-null picture-in-picture params"); 2135 } 2136 ActivityManagerNative.getDefault().setPictureInPictureParams(mToken, params); 2137 } catch (RemoteException e) { 2138 } 2139 } 2140 2141 /** 2142 * Return the number of actions that will be displayed in the picture-in-picture UI when the 2143 * user interacts with the activity currently in picture-in-picture mode. This number may change 2144 * if the global configuration changes (ie. if the device is plugged into an external display), 2145 * but will always be larger than three. 2146 */ 2147 public int getMaxNumPictureInPictureActions() { 2148 try { 2149 return ActivityManagerNative.getDefault().getMaxNumPictureInPictureActions(mToken); 2150 } catch (RemoteException e) { 2151 return 0; 2152 } 2153 } 2154 2155 void dispatchMovedToDisplay(int displayId, Configuration config) { 2156 updateDisplay(displayId); 2157 onMovedToDisplay(displayId, config); 2158 } 2159 2160 /** 2161 * Called by the system when the activity is moved from one display to another without 2162 * recreation. This means that this activity is declared to handle all changes to configuration 2163 * that happened when it was switched to another display, so it wasn't destroyed and created 2164 * again. 2165 * 2166 * <p>This call will be followed by {@link #onConfigurationChanged(Configuration)} if the 2167 * applied configuration actually changed. It is up to app developer to choose whether to handle 2168 * the change in this method or in the following {@link #onConfigurationChanged(Configuration)} 2169 * call. 2170 * 2171 * <p>Use this callback to track changes to the displays if some activity functionality relies 2172 * on an association with some display properties. 2173 * 2174 * @param displayId The id of the display to which activity was moved. 2175 * @param config Configuration of the activity resources on new display after move. 2176 * 2177 * @see #onConfigurationChanged(Configuration) 2178 * @see View#onMovedToDisplay(int, Configuration) 2179 * @hide 2180 */ 2181 public void onMovedToDisplay(int displayId, Configuration config) { 2182 } 2183 2184 /** 2185 * Called by the system when the device configuration changes while your 2186 * activity is running. Note that this will <em>only</em> be called if 2187 * you have selected configurations you would like to handle with the 2188 * {@link android.R.attr#configChanges} attribute in your manifest. If 2189 * any configuration change occurs that is not selected to be reported 2190 * by that attribute, then instead of reporting it the system will stop 2191 * and restart the activity (to have it launched with the new 2192 * configuration). 2193 * 2194 * <p>At the time that this function has been called, your Resources 2195 * object will have been updated to return resource values matching the 2196 * new configuration. 2197 * 2198 * @param newConfig The new device configuration. 2199 */ 2200 public void onConfigurationChanged(Configuration newConfig) { 2201 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 2202 mCalled = true; 2203 2204 mFragments.dispatchConfigurationChanged(newConfig); 2205 2206 if (mWindow != null) { 2207 // Pass the configuration changed event to the window 2208 mWindow.onConfigurationChanged(newConfig); 2209 } 2210 2211 if (mActionBar != null) { 2212 // Do this last; the action bar will need to access 2213 // view changes from above. 2214 mActionBar.onConfigurationChanged(newConfig); 2215 } 2216 } 2217 2218 /** 2219 * If this activity is being destroyed because it can not handle a 2220 * configuration parameter being changed (and thus its 2221 * {@link #onConfigurationChanged(Configuration)} method is 2222 * <em>not</em> being called), then you can use this method to discover 2223 * the set of changes that have occurred while in the process of being 2224 * destroyed. Note that there is no guarantee that these will be 2225 * accurate (other changes could have happened at any time), so you should 2226 * only use this as an optimization hint. 2227 * 2228 * @return Returns a bit field of the configuration parameters that are 2229 * changing, as defined by the {@link android.content.res.Configuration} 2230 * class. 2231 */ 2232 public int getChangingConfigurations() { 2233 return mConfigChangeFlags; 2234 } 2235 2236 /** 2237 * Retrieve the non-configuration instance data that was previously 2238 * returned by {@link #onRetainNonConfigurationInstance()}. This will 2239 * be available from the initial {@link #onCreate} and 2240 * {@link #onStart} calls to the new instance, allowing you to extract 2241 * any useful dynamic state from the previous instance. 2242 * 2243 * <p>Note that the data you retrieve here should <em>only</em> be used 2244 * as an optimization for handling configuration changes. You should always 2245 * be able to handle getting a null pointer back, and an activity must 2246 * still be able to restore itself to its previous state (through the 2247 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2248 * function returns null. 2249 * 2250 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2251 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2252 * available on older platforms through the Android support libraries. 2253 * 2254 * @return the object previously returned by {@link #onRetainNonConfigurationInstance()} 2255 */ 2256 @Nullable 2257 public Object getLastNonConfigurationInstance() { 2258 return mLastNonConfigurationInstances != null 2259 ? mLastNonConfigurationInstances.activity : null; 2260 } 2261 2262 /** 2263 * Called by the system, as part of destroying an 2264 * activity due to a configuration change, when it is known that a new 2265 * instance will immediately be created for the new configuration. You 2266 * can return any object you like here, including the activity instance 2267 * itself, which can later be retrieved by calling 2268 * {@link #getLastNonConfigurationInstance()} in the new activity 2269 * instance. 2270 * 2271 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2272 * or later, consider instead using a {@link Fragment} with 2273 * {@link Fragment#setRetainInstance(boolean) 2274 * Fragment.setRetainInstance(boolean}.</em> 2275 * 2276 * <p>This function is called purely as an optimization, and you must 2277 * not rely on it being called. When it is called, a number of guarantees 2278 * will be made to help optimize configuration switching: 2279 * <ul> 2280 * <li> The function will be called between {@link #onStop} and 2281 * {@link #onDestroy}. 2282 * <li> A new instance of the activity will <em>always</em> be immediately 2283 * created after this one's {@link #onDestroy()} is called. In particular, 2284 * <em>no</em> messages will be dispatched during this time (when the returned 2285 * object does not have an activity to be associated with). 2286 * <li> The object you return here will <em>always</em> be available from 2287 * the {@link #getLastNonConfigurationInstance()} method of the following 2288 * activity instance as described there. 2289 * </ul> 2290 * 2291 * <p>These guarantees are designed so that an activity can use this API 2292 * to propagate extensive state from the old to new activity instance, from 2293 * loaded bitmaps, to network connections, to evenly actively running 2294 * threads. Note that you should <em>not</em> propagate any data that 2295 * may change based on the configuration, including any data loaded from 2296 * resources such as strings, layouts, or drawables. 2297 * 2298 * <p>The guarantee of no message handling during the switch to the next 2299 * activity simplifies use with active objects. For example if your retained 2300 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2301 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2302 * not be called from the call here until you execute the next instance's 2303 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2304 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2305 * running in a separate thread.) 2306 * 2307 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2308 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2309 * available on older platforms through the Android support libraries. 2310 * 2311 * @return any Object holding the desired state to propagate to the 2312 * next activity instance 2313 */ 2314 public Object onRetainNonConfigurationInstance() { 2315 return null; 2316 } 2317 2318 /** 2319 * Retrieve the non-configuration instance data that was previously 2320 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2321 * be available from the initial {@link #onCreate} and 2322 * {@link #onStart} calls to the new instance, allowing you to extract 2323 * any useful dynamic state from the previous instance. 2324 * 2325 * <p>Note that the data you retrieve here should <em>only</em> be used 2326 * as an optimization for handling configuration changes. You should always 2327 * be able to handle getting a null pointer back, and an activity must 2328 * still be able to restore itself to its previous state (through the 2329 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2330 * function returns null. 2331 * 2332 * @return Returns the object previously returned by 2333 * {@link #onRetainNonConfigurationChildInstances()} 2334 */ 2335 @Nullable 2336 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2337 return mLastNonConfigurationInstances != null 2338 ? mLastNonConfigurationInstances.children : null; 2339 } 2340 2341 /** 2342 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2343 * it should return either a mapping from child activity id strings to arbitrary objects, 2344 * or null. This method is intended to be used by Activity framework subclasses that control a 2345 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2346 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2347 */ 2348 @Nullable 2349 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2350 return null; 2351 } 2352 2353 NonConfigurationInstances retainNonConfigurationInstances() { 2354 Object activity = onRetainNonConfigurationInstance(); 2355 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2356 FragmentManagerNonConfig fragments = mFragments.retainNestedNonConfig(); 2357 2358 // We're already stopped but we've been asked to retain. 2359 // Our fragments are taken care of but we need to mark the loaders for retention. 2360 // In order to do this correctly we need to restart the loaders first before 2361 // handing them off to the next activity. 2362 mFragments.doLoaderStart(); 2363 mFragments.doLoaderStop(true); 2364 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2365 2366 if (activity == null && children == null && fragments == null && loaders == null 2367 && mVoiceInteractor == null) { 2368 return null; 2369 } 2370 2371 NonConfigurationInstances nci = new NonConfigurationInstances(); 2372 nci.activity = activity; 2373 nci.children = children; 2374 nci.fragments = fragments; 2375 nci.loaders = loaders; 2376 if (mVoiceInteractor != null) { 2377 mVoiceInteractor.retainInstance(); 2378 nci.voiceInteractor = mVoiceInteractor; 2379 } 2380 return nci; 2381 } 2382 2383 public void onLowMemory() { 2384 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2385 mCalled = true; 2386 mFragments.dispatchLowMemory(); 2387 } 2388 2389 public void onTrimMemory(int level) { 2390 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2391 mCalled = true; 2392 mFragments.dispatchTrimMemory(level); 2393 } 2394 2395 /** 2396 * Return the FragmentManager for interacting with fragments associated 2397 * with this activity. 2398 */ 2399 public FragmentManager getFragmentManager() { 2400 return mFragments.getFragmentManager(); 2401 } 2402 2403 /** 2404 * Called when a Fragment is being attached to this activity, immediately 2405 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2406 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2407 */ 2408 public void onAttachFragment(Fragment fragment) { 2409 } 2410 2411 /** 2412 * Wrapper around 2413 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2414 * that gives the resulting {@link Cursor} to call 2415 * {@link #startManagingCursor} so that the activity will manage its 2416 * lifecycle for you. 2417 * 2418 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2419 * or later, consider instead using {@link LoaderManager} instead, available 2420 * via {@link #getLoaderManager()}.</em> 2421 * 2422 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2423 * this method, because the activity will do that for you at the appropriate time. However, if 2424 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2425 * not</em> automatically close the cursor and, in that case, you must call 2426 * {@link Cursor#close()}.</p> 2427 * 2428 * @param uri The URI of the content provider to query. 2429 * @param projection List of columns to return. 2430 * @param selection SQL WHERE clause. 2431 * @param sortOrder SQL ORDER BY clause. 2432 * 2433 * @return The Cursor that was returned by query(). 2434 * 2435 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2436 * @see #startManagingCursor 2437 * @hide 2438 * 2439 * @deprecated Use {@link CursorLoader} instead. 2440 */ 2441 @Deprecated 2442 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2443 String sortOrder) { 2444 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2445 if (c != null) { 2446 startManagingCursor(c); 2447 } 2448 return c; 2449 } 2450 2451 /** 2452 * Wrapper around 2453 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2454 * that gives the resulting {@link Cursor} to call 2455 * {@link #startManagingCursor} so that the activity will manage its 2456 * lifecycle for you. 2457 * 2458 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2459 * or later, consider instead using {@link LoaderManager} instead, available 2460 * via {@link #getLoaderManager()}.</em> 2461 * 2462 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2463 * this method, because the activity will do that for you at the appropriate time. However, if 2464 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2465 * not</em> automatically close the cursor and, in that case, you must call 2466 * {@link Cursor#close()}.</p> 2467 * 2468 * @param uri The URI of the content provider to query. 2469 * @param projection List of columns to return. 2470 * @param selection SQL WHERE clause. 2471 * @param selectionArgs The arguments to selection, if any ?s are pesent 2472 * @param sortOrder SQL ORDER BY clause. 2473 * 2474 * @return The Cursor that was returned by query(). 2475 * 2476 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2477 * @see #startManagingCursor 2478 * 2479 * @deprecated Use {@link CursorLoader} instead. 2480 */ 2481 @Deprecated 2482 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2483 String[] selectionArgs, String sortOrder) { 2484 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2485 if (c != null) { 2486 startManagingCursor(c); 2487 } 2488 return c; 2489 } 2490 2491 /** 2492 * This method allows the activity to take care of managing the given 2493 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2494 * That is, when the activity is stopped it will automatically call 2495 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2496 * it will call {@link Cursor#requery} for you. When the activity is 2497 * destroyed, all managed Cursors will be closed automatically. 2498 * 2499 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2500 * or later, consider instead using {@link LoaderManager} instead, available 2501 * via {@link #getLoaderManager()}.</em> 2502 * 2503 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2504 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2505 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2506 * <em>will not</em> automatically close the cursor and, in that case, you must call 2507 * {@link Cursor#close()}.</p> 2508 * 2509 * @param c The Cursor to be managed. 2510 * 2511 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2512 * @see #stopManagingCursor 2513 * 2514 * @deprecated Use the new {@link android.content.CursorLoader} class with 2515 * {@link LoaderManager} instead; this is also 2516 * available on older platforms through the Android compatibility package. 2517 */ 2518 @Deprecated 2519 public void startManagingCursor(Cursor c) { 2520 synchronized (mManagedCursors) { 2521 mManagedCursors.add(new ManagedCursor(c)); 2522 } 2523 } 2524 2525 /** 2526 * Given a Cursor that was previously given to 2527 * {@link #startManagingCursor}, stop the activity's management of that 2528 * cursor. 2529 * 2530 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2531 * the system <em>will not</em> automatically close the cursor and you must call 2532 * {@link Cursor#close()}.</p> 2533 * 2534 * @param c The Cursor that was being managed. 2535 * 2536 * @see #startManagingCursor 2537 * 2538 * @deprecated Use the new {@link android.content.CursorLoader} class with 2539 * {@link LoaderManager} instead; this is also 2540 * available on older platforms through the Android compatibility package. 2541 */ 2542 @Deprecated 2543 public void stopManagingCursor(Cursor c) { 2544 synchronized (mManagedCursors) { 2545 final int N = mManagedCursors.size(); 2546 for (int i=0; i<N; i++) { 2547 ManagedCursor mc = mManagedCursors.get(i); 2548 if (mc.mCursor == c) { 2549 mManagedCursors.remove(i); 2550 break; 2551 } 2552 } 2553 } 2554 } 2555 2556 /** 2557 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2558 * this is a no-op. 2559 * @hide 2560 */ 2561 @Deprecated 2562 public void setPersistent(boolean isPersistent) { 2563 } 2564 2565 /** 2566 * Finds a view that was identified by the {@code android:id} XML attribute 2567 * that was processed in {@link #onCreate}. 2568 * <p> 2569 * <strong>Note:</strong> In most cases -- depending on compiler support -- 2570 * the resulting view is automatically cast to the target class type. If 2571 * the target class type is unconstrained, an explicit cast may be 2572 * necessary. 2573 * 2574 * @param id the ID to search for 2575 * @return a view with given ID if found, or {@code null} otherwise 2576 * @see View#findViewById(int) 2577 */ 2578 @Nullable 2579 public <T extends View> T findViewById(@IdRes int id) { 2580 return getWindow().findViewById(id); 2581 } 2582 2583 /** 2584 * Retrieve a reference to this activity's ActionBar. 2585 * 2586 * @return The Activity's ActionBar, or null if it does not have one. 2587 */ 2588 @Nullable 2589 public ActionBar getActionBar() { 2590 initWindowDecorActionBar(); 2591 return mActionBar; 2592 } 2593 2594 /** 2595 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2596 * Activity window. 2597 * 2598 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2599 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2600 * a traditional window decor action bar. The toolbar's menu will be populated with the 2601 * Activity's options menu and the navigation button will be wired through the standard 2602 * {@link android.R.id#home home} menu select action.</p> 2603 * 2604 * <p>In order to use a Toolbar within the Activity's window content the application 2605 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2606 * 2607 * @param toolbar Toolbar to set as the Activity's action bar, or {@code null} to clear it 2608 */ 2609 public void setActionBar(@Nullable Toolbar toolbar) { 2610 final ActionBar ab = getActionBar(); 2611 if (ab instanceof WindowDecorActionBar) { 2612 throw new IllegalStateException("This Activity already has an action bar supplied " + 2613 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2614 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2615 } 2616 2617 // If we reach here then we're setting a new action bar 2618 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2619 mMenuInflater = null; 2620 2621 // If we have an action bar currently, destroy it 2622 if (ab != null) { 2623 ab.onDestroy(); 2624 } 2625 2626 if (toolbar != null) { 2627 final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2628 mActionBar = tbab; 2629 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2630 } else { 2631 mActionBar = null; 2632 // Re-set the original window callback since we may have already set a Toolbar wrapper 2633 mWindow.setCallback(this); 2634 } 2635 2636 invalidateOptionsMenu(); 2637 } 2638 2639 /** 2640 * Creates a new ActionBar, locates the inflated ActionBarView, 2641 * initializes the ActionBar with the view, and sets mActionBar. 2642 */ 2643 private void initWindowDecorActionBar() { 2644 Window window = getWindow(); 2645 2646 // Initializing the window decor can change window feature flags. 2647 // Make sure that we have the correct set before performing the test below. 2648 window.getDecorView(); 2649 2650 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2651 return; 2652 } 2653 2654 mActionBar = new WindowDecorActionBar(this); 2655 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2656 2657 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2658 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2659 } 2660 2661 /** 2662 * Set the activity content from a layout resource. The resource will be 2663 * inflated, adding all top-level views to the activity. 2664 * 2665 * @param layoutResID Resource ID to be inflated. 2666 * 2667 * @see #setContentView(android.view.View) 2668 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2669 */ 2670 public void setContentView(@LayoutRes int layoutResID) { 2671 getWindow().setContentView(layoutResID); 2672 initWindowDecorActionBar(); 2673 } 2674 2675 /** 2676 * Set the activity content to an explicit view. This view is placed 2677 * directly into the activity's view hierarchy. It can itself be a complex 2678 * view hierarchy. When calling this method, the layout parameters of the 2679 * specified view are ignored. Both the width and the height of the view are 2680 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2681 * your own layout parameters, invoke 2682 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2683 * instead. 2684 * 2685 * @param view The desired content to display. 2686 * 2687 * @see #setContentView(int) 2688 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2689 */ 2690 public void setContentView(View view) { 2691 getWindow().setContentView(view); 2692 initWindowDecorActionBar(); 2693 } 2694 2695 /** 2696 * Set the activity content to an explicit view. This view is placed 2697 * directly into the activity's view hierarchy. It can itself be a complex 2698 * view hierarchy. 2699 * 2700 * @param view The desired content to display. 2701 * @param params Layout parameters for the view. 2702 * 2703 * @see #setContentView(android.view.View) 2704 * @see #setContentView(int) 2705 */ 2706 public void setContentView(View view, ViewGroup.LayoutParams params) { 2707 getWindow().setContentView(view, params); 2708 initWindowDecorActionBar(); 2709 } 2710 2711 /** 2712 * Add an additional content view to the activity. Added after any existing 2713 * ones in the activity -- existing views are NOT removed. 2714 * 2715 * @param view The desired content to display. 2716 * @param params Layout parameters for the view. 2717 */ 2718 public void addContentView(View view, ViewGroup.LayoutParams params) { 2719 getWindow().addContentView(view, params); 2720 initWindowDecorActionBar(); 2721 } 2722 2723 /** 2724 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2725 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2726 * 2727 * <p>This method will return non-null after content has been initialized (e.g. by using 2728 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2729 * 2730 * @return This window's content TransitionManager or null if none is set. 2731 */ 2732 public TransitionManager getContentTransitionManager() { 2733 return getWindow().getTransitionManager(); 2734 } 2735 2736 /** 2737 * Set the {@link TransitionManager} to use for default transitions in this window. 2738 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2739 * 2740 * @param tm The TransitionManager to use for scene changes. 2741 */ 2742 public void setContentTransitionManager(TransitionManager tm) { 2743 getWindow().setTransitionManager(tm); 2744 } 2745 2746 /** 2747 * Retrieve the {@link Scene} representing this window's current content. 2748 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2749 * 2750 * <p>This method will return null if the current content is not represented by a Scene.</p> 2751 * 2752 * @return Current Scene being shown or null 2753 */ 2754 public Scene getContentScene() { 2755 return getWindow().getContentScene(); 2756 } 2757 2758 /** 2759 * Sets whether this activity is finished when touched outside its window's 2760 * bounds. 2761 */ 2762 public void setFinishOnTouchOutside(boolean finish) { 2763 mWindow.setCloseOnTouchOutside(finish); 2764 } 2765 2766 /** @hide */ 2767 @IntDef(prefix = { "DEFAULT_KEYS_" }, value = { 2768 DEFAULT_KEYS_DISABLE, 2769 DEFAULT_KEYS_DIALER, 2770 DEFAULT_KEYS_SHORTCUT, 2771 DEFAULT_KEYS_SEARCH_LOCAL, 2772 DEFAULT_KEYS_SEARCH_GLOBAL 2773 }) 2774 @Retention(RetentionPolicy.SOURCE) 2775 @interface DefaultKeyMode {} 2776 2777 /** 2778 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2779 * keys. 2780 * 2781 * @see #setDefaultKeyMode 2782 */ 2783 static public final int DEFAULT_KEYS_DISABLE = 0; 2784 /** 2785 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2786 * key handling. 2787 * 2788 * @see #setDefaultKeyMode 2789 */ 2790 static public final int DEFAULT_KEYS_DIALER = 1; 2791 /** 2792 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2793 * default key handling. 2794 * 2795 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2796 * 2797 * @see #setDefaultKeyMode 2798 */ 2799 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2800 /** 2801 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2802 * will start an application-defined search. (If the application or activity does not 2803 * actually define a search, the the keys will be ignored.) 2804 * 2805 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2806 * 2807 * @see #setDefaultKeyMode 2808 */ 2809 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2810 2811 /** 2812 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2813 * will start a global search (typically web search, but some platforms may define alternate 2814 * methods for global search) 2815 * 2816 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2817 * 2818 * @see #setDefaultKeyMode 2819 */ 2820 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2821 2822 /** 2823 * Select the default key handling for this activity. This controls what 2824 * will happen to key events that are not otherwise handled. The default 2825 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2826 * floor. Other modes allow you to launch the dialer 2827 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2828 * menu without requiring the menu key be held down 2829 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2830 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2831 * 2832 * <p>Note that the mode selected here does not impact the default 2833 * handling of system keys, such as the "back" and "menu" keys, and your 2834 * activity and its views always get a first chance to receive and handle 2835 * all application keys. 2836 * 2837 * @param mode The desired default key mode constant. 2838 * 2839 * @see #onKeyDown 2840 */ 2841 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2842 mDefaultKeyMode = mode; 2843 2844 // Some modes use a SpannableStringBuilder to track & dispatch input events 2845 // This list must remain in sync with the switch in onKeyDown() 2846 switch (mode) { 2847 case DEFAULT_KEYS_DISABLE: 2848 case DEFAULT_KEYS_SHORTCUT: 2849 mDefaultKeySsb = null; // not used in these modes 2850 break; 2851 case DEFAULT_KEYS_DIALER: 2852 case DEFAULT_KEYS_SEARCH_LOCAL: 2853 case DEFAULT_KEYS_SEARCH_GLOBAL: 2854 mDefaultKeySsb = new SpannableStringBuilder(); 2855 Selection.setSelection(mDefaultKeySsb,0); 2856 break; 2857 default: 2858 throw new IllegalArgumentException(); 2859 } 2860 } 2861 2862 /** 2863 * Called when a key was pressed down and not handled by any of the views 2864 * inside of the activity. So, for example, key presses while the cursor 2865 * is inside a TextView will not trigger the event (unless it is a navigation 2866 * to another object) because TextView handles its own key presses. 2867 * 2868 * <p>If the focused view didn't want this event, this method is called. 2869 * 2870 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2871 * by calling {@link #onBackPressed()}, though the behavior varies based 2872 * on the application compatibility mode: for 2873 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2874 * it will set up the dispatch to call {@link #onKeyUp} where the action 2875 * will be performed; for earlier applications, it will perform the 2876 * action immediately in on-down, as those versions of the platform 2877 * behaved. 2878 * 2879 * <p>Other additional default key handling may be performed 2880 * if configured with {@link #setDefaultKeyMode}. 2881 * 2882 * @return Return <code>true</code> to prevent this event from being propagated 2883 * further, or <code>false</code> to indicate that you have not handled 2884 * this event and it should continue to be propagated. 2885 * @see #onKeyUp 2886 * @see android.view.KeyEvent 2887 */ 2888 public boolean onKeyDown(int keyCode, KeyEvent event) { 2889 if (keyCode == KeyEvent.KEYCODE_BACK) { 2890 if (getApplicationInfo().targetSdkVersion 2891 >= Build.VERSION_CODES.ECLAIR) { 2892 event.startTracking(); 2893 } else { 2894 onBackPressed(); 2895 } 2896 return true; 2897 } 2898 2899 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2900 return false; 2901 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2902 Window w = getWindow(); 2903 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2904 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2905 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2906 return true; 2907 } 2908 return false; 2909 } else if (keyCode == KeyEvent.KEYCODE_TAB) { 2910 // Don't consume TAB here since it's used for navigation. Arrow keys 2911 // aren't considered "typing keys" so they already won't get consumed. 2912 return false; 2913 } else { 2914 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2915 boolean clearSpannable = false; 2916 boolean handled; 2917 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2918 clearSpannable = true; 2919 handled = false; 2920 } else { 2921 handled = TextKeyListener.getInstance().onKeyDown( 2922 null, mDefaultKeySsb, keyCode, event); 2923 if (handled && mDefaultKeySsb.length() > 0) { 2924 // something useable has been typed - dispatch it now. 2925 2926 final String str = mDefaultKeySsb.toString(); 2927 clearSpannable = true; 2928 2929 switch (mDefaultKeyMode) { 2930 case DEFAULT_KEYS_DIALER: 2931 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2932 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2933 startActivity(intent); 2934 break; 2935 case DEFAULT_KEYS_SEARCH_LOCAL: 2936 startSearch(str, false, null, false); 2937 break; 2938 case DEFAULT_KEYS_SEARCH_GLOBAL: 2939 startSearch(str, false, null, true); 2940 break; 2941 } 2942 } 2943 } 2944 if (clearSpannable) { 2945 mDefaultKeySsb.clear(); 2946 mDefaultKeySsb.clearSpans(); 2947 Selection.setSelection(mDefaultKeySsb,0); 2948 } 2949 return handled; 2950 } 2951 } 2952 2953 /** 2954 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2955 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2956 * the event). 2957 */ 2958 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2959 return false; 2960 } 2961 2962 /** 2963 * Called when a key was released and not handled by any of the views 2964 * inside of the activity. So, for example, key presses while the cursor 2965 * is inside a TextView will not trigger the event (unless it is a navigation 2966 * to another object) because TextView handles its own key presses. 2967 * 2968 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2969 * and go back. 2970 * 2971 * @return Return <code>true</code> to prevent this event from being propagated 2972 * further, or <code>false</code> to indicate that you have not handled 2973 * this event and it should continue to be propagated. 2974 * @see #onKeyDown 2975 * @see KeyEvent 2976 */ 2977 public boolean onKeyUp(int keyCode, KeyEvent event) { 2978 if (getApplicationInfo().targetSdkVersion 2979 >= Build.VERSION_CODES.ECLAIR) { 2980 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2981 && !event.isCanceled()) { 2982 onBackPressed(); 2983 return true; 2984 } 2985 } 2986 return false; 2987 } 2988 2989 /** 2990 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2991 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2992 * the event). 2993 */ 2994 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2995 return false; 2996 } 2997 2998 /** 2999 * Called when the activity has detected the user's press of the back 3000 * key. The default implementation simply finishes the current activity, 3001 * but you can override this to do whatever you want. 3002 */ 3003 public void onBackPressed() { 3004 if (mActionBar != null && mActionBar.collapseActionView()) { 3005 return; 3006 } 3007 3008 FragmentManager fragmentManager = mFragments.getFragmentManager(); 3009 3010 if (fragmentManager.isStateSaved() || !fragmentManager.popBackStackImmediate()) { 3011 finishAfterTransition(); 3012 } 3013 } 3014 3015 /** 3016 * Called when a key shortcut event is not handled by any of the views in the Activity. 3017 * Override this method to implement global key shortcuts for the Activity. 3018 * Key shortcuts can also be implemented by setting the 3019 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 3020 * 3021 * @param keyCode The value in event.getKeyCode(). 3022 * @param event Description of the key event. 3023 * @return True if the key shortcut was handled. 3024 */ 3025 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 3026 // Let the Action Bar have a chance at handling the shortcut. 3027 ActionBar actionBar = getActionBar(); 3028 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 3029 } 3030 3031 /** 3032 * Called when a touch screen event was not handled by any of the views 3033 * under it. This is most useful to process touch events that happen 3034 * outside of your window bounds, where there is no view to receive it. 3035 * 3036 * @param event The touch screen event being processed. 3037 * 3038 * @return Return true if you have consumed the event, false if you haven't. 3039 * The default implementation always returns false. 3040 */ 3041 public boolean onTouchEvent(MotionEvent event) { 3042 if (mWindow.shouldCloseOnTouch(this, event)) { 3043 finish(); 3044 return true; 3045 } 3046 3047 return false; 3048 } 3049 3050 /** 3051 * Called when the trackball was moved and not handled by any of the 3052 * views inside of the activity. So, for example, if the trackball moves 3053 * while focus is on a button, you will receive a call here because 3054 * buttons do not normally do anything with trackball events. The call 3055 * here happens <em>before</em> trackball movements are converted to 3056 * DPAD key events, which then get sent back to the view hierarchy, and 3057 * will be processed at the point for things like focus navigation. 3058 * 3059 * @param event The trackball event being processed. 3060 * 3061 * @return Return true if you have consumed the event, false if you haven't. 3062 * The default implementation always returns false. 3063 */ 3064 public boolean onTrackballEvent(MotionEvent event) { 3065 return false; 3066 } 3067 3068 /** 3069 * Called when a generic motion event was not handled by any of the 3070 * views inside of the activity. 3071 * <p> 3072 * Generic motion events describe joystick movements, mouse hovers, track pad 3073 * touches, scroll wheel movements and other input events. The 3074 * {@link MotionEvent#getSource() source} of the motion event specifies 3075 * the class of input that was received. Implementations of this method 3076 * must examine the bits in the source before processing the event. 3077 * The following code example shows how this is done. 3078 * </p><p> 3079 * Generic motion events with source class 3080 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 3081 * are delivered to the view under the pointer. All other generic motion events are 3082 * delivered to the focused view. 3083 * </p><p> 3084 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 3085 * handle this event. 3086 * </p> 3087 * 3088 * @param event The generic motion event being processed. 3089 * 3090 * @return Return true if you have consumed the event, false if you haven't. 3091 * The default implementation always returns false. 3092 */ 3093 public boolean onGenericMotionEvent(MotionEvent event) { 3094 return false; 3095 } 3096 3097 /** 3098 * Called whenever a key, touch, or trackball event is dispatched to the 3099 * activity. Implement this method if you wish to know that the user has 3100 * interacted with the device in some way while your activity is running. 3101 * This callback and {@link #onUserLeaveHint} are intended to help 3102 * activities manage status bar notifications intelligently; specifically, 3103 * for helping activities determine the proper time to cancel a notfication. 3104 * 3105 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 3106 * be accompanied by calls to {@link #onUserInteraction}. This 3107 * ensures that your activity will be told of relevant user activity such 3108 * as pulling down the notification pane and touching an item there. 3109 * 3110 * <p>Note that this callback will be invoked for the touch down action 3111 * that begins a touch gesture, but may not be invoked for the touch-moved 3112 * and touch-up actions that follow. 3113 * 3114 * @see #onUserLeaveHint() 3115 */ 3116 public void onUserInteraction() { 3117 } 3118 3119 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 3120 // Update window manager if: we have a view, that view is 3121 // attached to its parent (which will be a RootView), and 3122 // this activity is not embedded. 3123 if (mParent == null) { 3124 View decor = mDecor; 3125 if (decor != null && decor.getParent() != null) { 3126 getWindowManager().updateViewLayout(decor, params); 3127 } 3128 } 3129 } 3130 3131 public void onContentChanged() { 3132 } 3133 3134 /** 3135 * Called when the current {@link Window} of the activity gains or loses 3136 * focus. This is the best indicator of whether this activity is visible 3137 * to the user. The default implementation clears the key tracking 3138 * state, so should always be called. 3139 * 3140 * <p>Note that this provides information about global focus state, which 3141 * is managed independently of activity lifecycles. As such, while focus 3142 * changes will generally have some relation to lifecycle changes (an 3143 * activity that is stopped will not generally get window focus), you 3144 * should not rely on any particular order between the callbacks here and 3145 * those in the other lifecycle methods such as {@link #onResume}. 3146 * 3147 * <p>As a general rule, however, a resumed activity will have window 3148 * focus... unless it has displayed other dialogs or popups that take 3149 * input focus, in which case the activity itself will not have focus 3150 * when the other windows have it. Likewise, the system may display 3151 * system-level windows (such as the status bar notification panel or 3152 * a system alert) which will temporarily take window input focus without 3153 * pausing the foreground activity. 3154 * 3155 * @param hasFocus Whether the window of this activity has focus. 3156 * 3157 * @see #hasWindowFocus() 3158 * @see #onResume 3159 * @see View#onWindowFocusChanged(boolean) 3160 */ 3161 public void onWindowFocusChanged(boolean hasFocus) { 3162 } 3163 3164 /** 3165 * Called when the main window associated with the activity has been 3166 * attached to the window manager. 3167 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 3168 * for more information. 3169 * @see View#onAttachedToWindow 3170 */ 3171 public void onAttachedToWindow() { 3172 } 3173 3174 /** 3175 * Called when the main window associated with the activity has been 3176 * detached from the window manager. 3177 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 3178 * for more information. 3179 * @see View#onDetachedFromWindow 3180 */ 3181 public void onDetachedFromWindow() { 3182 } 3183 3184 /** 3185 * Returns true if this activity's <em>main</em> window currently has window focus. 3186 * Note that this is not the same as the view itself having focus. 3187 * 3188 * @return True if this activity's main window currently has window focus. 3189 * 3190 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 3191 */ 3192 public boolean hasWindowFocus() { 3193 Window w = getWindow(); 3194 if (w != null) { 3195 View d = w.getDecorView(); 3196 if (d != null) { 3197 return d.hasWindowFocus(); 3198 } 3199 } 3200 return false; 3201 } 3202 3203 /** 3204 * Called when the main window associated with the activity has been dismissed. 3205 * @hide 3206 */ 3207 @Override 3208 public void onWindowDismissed(boolean finishTask, boolean suppressWindowTransition) { 3209 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 3210 if (suppressWindowTransition) { 3211 overridePendingTransition(0, 0); 3212 } 3213 } 3214 3215 3216 /** 3217 * Moves the activity from {@link WindowConfiguration#WINDOWING_MODE_FREEFORM} windowing mode to 3218 * {@link WindowConfiguration#WINDOWING_MODE_FULLSCREEN}. 3219 * 3220 * @hide 3221 */ 3222 @Override 3223 public void exitFreeformMode() throws RemoteException { 3224 ActivityManager.getService().exitFreeformMode(mToken); 3225 } 3226 3227 /** 3228 * Puts the activity in picture-in-picture mode if the activity supports. 3229 * @see android.R.attr#supportsPictureInPicture 3230 * @hide 3231 */ 3232 @Override 3233 public void enterPictureInPictureModeIfPossible() { 3234 if (mActivityInfo.supportsPictureInPicture()) { 3235 enterPictureInPictureMode(); 3236 } 3237 } 3238 3239 /** 3240 * Called to process key events. You can override this to intercept all 3241 * key events before they are dispatched to the window. Be sure to call 3242 * this implementation for key events that should be handled normally. 3243 * 3244 * @param event The key event. 3245 * 3246 * @return boolean Return true if this event was consumed. 3247 */ 3248 public boolean dispatchKeyEvent(KeyEvent event) { 3249 onUserInteraction(); 3250 3251 // Let action bars open menus in response to the menu key prioritized over 3252 // the window handling it 3253 final int keyCode = event.getKeyCode(); 3254 if (keyCode == KeyEvent.KEYCODE_MENU && 3255 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 3256 return true; 3257 } 3258 3259 Window win = getWindow(); 3260 if (win.superDispatchKeyEvent(event)) { 3261 return true; 3262 } 3263 View decor = mDecor; 3264 if (decor == null) decor = win.getDecorView(); 3265 return event.dispatch(this, decor != null 3266 ? decor.getKeyDispatcherState() : null, this); 3267 } 3268 3269 /** 3270 * Called to process a key shortcut event. 3271 * You can override this to intercept all key shortcut events before they are 3272 * dispatched to the window. Be sure to call this implementation for key shortcut 3273 * events that should be handled normally. 3274 * 3275 * @param event The key shortcut event. 3276 * @return True if this event was consumed. 3277 */ 3278 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 3279 onUserInteraction(); 3280 if (getWindow().superDispatchKeyShortcutEvent(event)) { 3281 return true; 3282 } 3283 return onKeyShortcut(event.getKeyCode(), event); 3284 } 3285 3286 /** 3287 * Called to process touch screen events. You can override this to 3288 * intercept all touch screen events before they are dispatched to the 3289 * window. Be sure to call this implementation for touch screen events 3290 * that should be handled normally. 3291 * 3292 * @param ev The touch screen event. 3293 * 3294 * @return boolean Return true if this event was consumed. 3295 */ 3296 public boolean dispatchTouchEvent(MotionEvent ev) { 3297 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3298 onUserInteraction(); 3299 } 3300 if (getWindow().superDispatchTouchEvent(ev)) { 3301 return true; 3302 } 3303 return onTouchEvent(ev); 3304 } 3305 3306 /** 3307 * Called to process trackball events. You can override this to 3308 * intercept all trackball events before they are dispatched to the 3309 * window. Be sure to call this implementation for trackball events 3310 * that should be handled normally. 3311 * 3312 * @param ev The trackball event. 3313 * 3314 * @return boolean Return true if this event was consumed. 3315 */ 3316 public boolean dispatchTrackballEvent(MotionEvent ev) { 3317 onUserInteraction(); 3318 if (getWindow().superDispatchTrackballEvent(ev)) { 3319 return true; 3320 } 3321 return onTrackballEvent(ev); 3322 } 3323 3324 /** 3325 * Called to process generic motion events. You can override this to 3326 * intercept all generic motion events before they are dispatched to the 3327 * window. Be sure to call this implementation for generic motion events 3328 * that should be handled normally. 3329 * 3330 * @param ev The generic motion event. 3331 * 3332 * @return boolean Return true if this event was consumed. 3333 */ 3334 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3335 onUserInteraction(); 3336 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3337 return true; 3338 } 3339 return onGenericMotionEvent(ev); 3340 } 3341 3342 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3343 event.setClassName(getClass().getName()); 3344 event.setPackageName(getPackageName()); 3345 3346 LayoutParams params = getWindow().getAttributes(); 3347 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3348 (params.height == LayoutParams.MATCH_PARENT); 3349 event.setFullScreen(isFullScreen); 3350 3351 CharSequence title = getTitle(); 3352 if (!TextUtils.isEmpty(title)) { 3353 event.getText().add(title); 3354 } 3355 3356 return true; 3357 } 3358 3359 /** 3360 * Default implementation of 3361 * {@link android.view.Window.Callback#onCreatePanelView} 3362 * for activities. This 3363 * simply returns null so that all panel sub-windows will have the default 3364 * menu behavior. 3365 */ 3366 @Nullable 3367 public View onCreatePanelView(int featureId) { 3368 return null; 3369 } 3370 3371 /** 3372 * Default implementation of 3373 * {@link android.view.Window.Callback#onCreatePanelMenu} 3374 * for activities. This calls through to the new 3375 * {@link #onCreateOptionsMenu} method for the 3376 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3377 * so that subclasses of Activity don't need to deal with feature codes. 3378 */ 3379 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3380 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3381 boolean show = onCreateOptionsMenu(menu); 3382 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3383 return show; 3384 } 3385 return false; 3386 } 3387 3388 /** 3389 * Default implementation of 3390 * {@link android.view.Window.Callback#onPreparePanel} 3391 * for activities. This 3392 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3393 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3394 * panel, so that subclasses of 3395 * Activity don't need to deal with feature codes. 3396 */ 3397 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3398 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3399 boolean goforit = onPrepareOptionsMenu(menu); 3400 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3401 return goforit; 3402 } 3403 return true; 3404 } 3405 3406 /** 3407 * {@inheritDoc} 3408 * 3409 * @return The default implementation returns true. 3410 */ 3411 public boolean onMenuOpened(int featureId, Menu menu) { 3412 if (featureId == Window.FEATURE_ACTION_BAR) { 3413 initWindowDecorActionBar(); 3414 if (mActionBar != null) { 3415 mActionBar.dispatchMenuVisibilityChanged(true); 3416 } else { 3417 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3418 } 3419 } 3420 return true; 3421 } 3422 3423 /** 3424 * Default implementation of 3425 * {@link android.view.Window.Callback#onMenuItemSelected} 3426 * for activities. This calls through to the new 3427 * {@link #onOptionsItemSelected} method for the 3428 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3429 * panel, so that subclasses of 3430 * Activity don't need to deal with feature codes. 3431 */ 3432 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3433 CharSequence titleCondensed = item.getTitleCondensed(); 3434 3435 switch (featureId) { 3436 case Window.FEATURE_OPTIONS_PANEL: 3437 // Put event logging here so it gets called even if subclass 3438 // doesn't call through to superclass's implmeentation of each 3439 // of these methods below 3440 if(titleCondensed != null) { 3441 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3442 } 3443 if (onOptionsItemSelected(item)) { 3444 return true; 3445 } 3446 if (mFragments.dispatchOptionsItemSelected(item)) { 3447 return true; 3448 } 3449 if (item.getItemId() == android.R.id.home && mActionBar != null && 3450 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3451 if (mParent == null) { 3452 return onNavigateUp(); 3453 } else { 3454 return mParent.onNavigateUpFromChild(this); 3455 } 3456 } 3457 return false; 3458 3459 case Window.FEATURE_CONTEXT_MENU: 3460 if(titleCondensed != null) { 3461 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3462 } 3463 if (onContextItemSelected(item)) { 3464 return true; 3465 } 3466 return mFragments.dispatchContextItemSelected(item); 3467 3468 default: 3469 return false; 3470 } 3471 } 3472 3473 /** 3474 * Default implementation of 3475 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3476 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3477 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3478 * so that subclasses of Activity don't need to deal with feature codes. 3479 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3480 * {@link #onContextMenuClosed(Menu)} will be called. 3481 */ 3482 public void onPanelClosed(int featureId, Menu menu) { 3483 switch (featureId) { 3484 case Window.FEATURE_OPTIONS_PANEL: 3485 mFragments.dispatchOptionsMenuClosed(menu); 3486 onOptionsMenuClosed(menu); 3487 break; 3488 3489 case Window.FEATURE_CONTEXT_MENU: 3490 onContextMenuClosed(menu); 3491 break; 3492 3493 case Window.FEATURE_ACTION_BAR: 3494 initWindowDecorActionBar(); 3495 mActionBar.dispatchMenuVisibilityChanged(false); 3496 break; 3497 } 3498 } 3499 3500 /** 3501 * Declare that the options menu has changed, so should be recreated. 3502 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3503 * time it needs to be displayed. 3504 */ 3505 public void invalidateOptionsMenu() { 3506 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3507 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3508 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3509 } 3510 } 3511 3512 /** 3513 * Initialize the contents of the Activity's standard options menu. You 3514 * should place your menu items in to <var>menu</var>. 3515 * 3516 * <p>This is only called once, the first time the options menu is 3517 * displayed. To update the menu every time it is displayed, see 3518 * {@link #onPrepareOptionsMenu}. 3519 * 3520 * <p>The default implementation populates the menu with standard system 3521 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3522 * they will be correctly ordered with application-defined menu items. 3523 * Deriving classes should always call through to the base implementation. 3524 * 3525 * <p>You can safely hold on to <var>menu</var> (and any items created 3526 * from it), making modifications to it as desired, until the next 3527 * time onCreateOptionsMenu() is called. 3528 * 3529 * <p>When you add items to the menu, you can implement the Activity's 3530 * {@link #onOptionsItemSelected} method to handle them there. 3531 * 3532 * @param menu The options menu in which you place your items. 3533 * 3534 * @return You must return true for the menu to be displayed; 3535 * if you return false it will not be shown. 3536 * 3537 * @see #onPrepareOptionsMenu 3538 * @see #onOptionsItemSelected 3539 */ 3540 public boolean onCreateOptionsMenu(Menu menu) { 3541 if (mParent != null) { 3542 return mParent.onCreateOptionsMenu(menu); 3543 } 3544 return true; 3545 } 3546 3547 /** 3548 * Prepare the Screen's standard options menu to be displayed. This is 3549 * called right before the menu is shown, every time it is shown. You can 3550 * use this method to efficiently enable/disable items or otherwise 3551 * dynamically modify the contents. 3552 * 3553 * <p>The default implementation updates the system menu items based on the 3554 * activity's state. Deriving classes should always call through to the 3555 * base class implementation. 3556 * 3557 * @param menu The options menu as last shown or first initialized by 3558 * onCreateOptionsMenu(). 3559 * 3560 * @return You must return true for the menu to be displayed; 3561 * if you return false it will not be shown. 3562 * 3563 * @see #onCreateOptionsMenu 3564 */ 3565 public boolean onPrepareOptionsMenu(Menu menu) { 3566 if (mParent != null) { 3567 return mParent.onPrepareOptionsMenu(menu); 3568 } 3569 return true; 3570 } 3571 3572 /** 3573 * This hook is called whenever an item in your options menu is selected. 3574 * The default implementation simply returns false to have the normal 3575 * processing happen (calling the item's Runnable or sending a message to 3576 * its Handler as appropriate). You can use this method for any items 3577 * for which you would like to do processing without those other 3578 * facilities. 3579 * 3580 * <p>Derived classes should call through to the base class for it to 3581 * perform the default menu handling.</p> 3582 * 3583 * @param item The menu item that was selected. 3584 * 3585 * @return boolean Return false to allow normal menu processing to 3586 * proceed, true to consume it here. 3587 * 3588 * @see #onCreateOptionsMenu 3589 */ 3590 public boolean onOptionsItemSelected(MenuItem item) { 3591 if (mParent != null) { 3592 return mParent.onOptionsItemSelected(item); 3593 } 3594 return false; 3595 } 3596 3597 /** 3598 * This method is called whenever the user chooses to navigate Up within your application's 3599 * activity hierarchy from the action bar. 3600 * 3601 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3602 * was specified in the manifest for this activity or an activity-alias to it, 3603 * default Up navigation will be handled automatically. If any activity 3604 * along the parent chain requires extra Intent arguments, the Activity subclass 3605 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3606 * to supply those arguments.</p> 3607 * 3608 * <p>See <a href="{@docRoot}guide/components/tasks-and-back-stack.html">Tasks and Back Stack</a> 3609 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3610 * from the design guide for more information about navigating within your app.</p> 3611 * 3612 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3613 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3614 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3615 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3616 * 3617 * @return true if Up navigation completed successfully and this Activity was finished, 3618 * false otherwise. 3619 */ 3620 public boolean onNavigateUp() { 3621 // Automatically handle hierarchical Up navigation if the proper 3622 // metadata is available. 3623 Intent upIntent = getParentActivityIntent(); 3624 if (upIntent != null) { 3625 if (mActivityInfo.taskAffinity == null) { 3626 // Activities with a null affinity are special; they really shouldn't 3627 // specify a parent activity intent in the first place. Just finish 3628 // the current activity and call it a day. 3629 finish(); 3630 } else if (shouldUpRecreateTask(upIntent)) { 3631 TaskStackBuilder b = TaskStackBuilder.create(this); 3632 onCreateNavigateUpTaskStack(b); 3633 onPrepareNavigateUpTaskStack(b); 3634 b.startActivities(); 3635 3636 // We can't finishAffinity if we have a result. 3637 // Fall back and simply finish the current activity instead. 3638 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3639 // Tell the developer what's going on to avoid hair-pulling. 3640 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3641 finish(); 3642 } else { 3643 finishAffinity(); 3644 } 3645 } else { 3646 navigateUpTo(upIntent); 3647 } 3648 return true; 3649 } 3650 return false; 3651 } 3652 3653 /** 3654 * This is called when a child activity of this one attempts to navigate up. 3655 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3656 * 3657 * @param child The activity making the call. 3658 */ 3659 public boolean onNavigateUpFromChild(Activity child) { 3660 return onNavigateUp(); 3661 } 3662 3663 /** 3664 * Define the synthetic task stack that will be generated during Up navigation from 3665 * a different task. 3666 * 3667 * <p>The default implementation of this method adds the parent chain of this activity 3668 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3669 * may choose to override this method to construct the desired task stack in a different 3670 * way.</p> 3671 * 3672 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3673 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3674 * returned by {@link #getParentActivityIntent()}.</p> 3675 * 3676 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3677 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3678 * 3679 * @param builder An empty TaskStackBuilder - the application should add intents representing 3680 * the desired task stack 3681 */ 3682 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3683 builder.addParentStack(this); 3684 } 3685 3686 /** 3687 * Prepare the synthetic task stack that will be generated during Up navigation 3688 * from a different task. 3689 * 3690 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3691 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3692 * If any extra data should be added to these intents before launching the new task, 3693 * the application should override this method and add that data here.</p> 3694 * 3695 * @param builder A TaskStackBuilder that has been populated with Intents by 3696 * onCreateNavigateUpTaskStack. 3697 */ 3698 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3699 } 3700 3701 /** 3702 * This hook is called whenever the options menu is being closed (either by the user canceling 3703 * the menu with the back/menu button, or when an item is selected). 3704 * 3705 * @param menu The options menu as last shown or first initialized by 3706 * onCreateOptionsMenu(). 3707 */ 3708 public void onOptionsMenuClosed(Menu menu) { 3709 if (mParent != null) { 3710 mParent.onOptionsMenuClosed(menu); 3711 } 3712 } 3713 3714 /** 3715 * Programmatically opens the options menu. If the options menu is already 3716 * open, this method does nothing. 3717 */ 3718 public void openOptionsMenu() { 3719 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3720 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3721 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3722 } 3723 } 3724 3725 /** 3726 * Progammatically closes the options menu. If the options menu is already 3727 * closed, this method does nothing. 3728 */ 3729 public void closeOptionsMenu() { 3730 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3731 (mActionBar == null || !mActionBar.closeOptionsMenu())) { 3732 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3733 } 3734 } 3735 3736 /** 3737 * Called when a context menu for the {@code view} is about to be shown. 3738 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3739 * time the context menu is about to be shown and should be populated for 3740 * the view (or item inside the view for {@link AdapterView} subclasses, 3741 * this can be found in the {@code menuInfo})). 3742 * <p> 3743 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3744 * item has been selected. 3745 * <p> 3746 * It is not safe to hold onto the context menu after this method returns. 3747 * 3748 */ 3749 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3750 } 3751 3752 /** 3753 * Registers a context menu to be shown for the given view (multiple views 3754 * can show the context menu). This method will set the 3755 * {@link OnCreateContextMenuListener} on the view to this activity, so 3756 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3757 * called when it is time to show the context menu. 3758 * 3759 * @see #unregisterForContextMenu(View) 3760 * @param view The view that should show a context menu. 3761 */ 3762 public void registerForContextMenu(View view) { 3763 view.setOnCreateContextMenuListener(this); 3764 } 3765 3766 /** 3767 * Prevents a context menu to be shown for the given view. This method will remove the 3768 * {@link OnCreateContextMenuListener} on the view. 3769 * 3770 * @see #registerForContextMenu(View) 3771 * @param view The view that should stop showing a context menu. 3772 */ 3773 public void unregisterForContextMenu(View view) { 3774 view.setOnCreateContextMenuListener(null); 3775 } 3776 3777 /** 3778 * Programmatically opens the context menu for a particular {@code view}. 3779 * The {@code view} should have been added via 3780 * {@link #registerForContextMenu(View)}. 3781 * 3782 * @param view The view to show the context menu for. 3783 */ 3784 public void openContextMenu(View view) { 3785 view.showContextMenu(); 3786 } 3787 3788 /** 3789 * Programmatically closes the most recently opened context menu, if showing. 3790 */ 3791 public void closeContextMenu() { 3792 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3793 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3794 } 3795 } 3796 3797 /** 3798 * This hook is called whenever an item in a context menu is selected. The 3799 * default implementation simply returns false to have the normal processing 3800 * happen (calling the item's Runnable or sending a message to its Handler 3801 * as appropriate). You can use this method for any items for which you 3802 * would like to do processing without those other facilities. 3803 * <p> 3804 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3805 * View that added this menu item. 3806 * <p> 3807 * Derived classes should call through to the base class for it to perform 3808 * the default menu handling. 3809 * 3810 * @param item The context menu item that was selected. 3811 * @return boolean Return false to allow normal context menu processing to 3812 * proceed, true to consume it here. 3813 */ 3814 public boolean onContextItemSelected(MenuItem item) { 3815 if (mParent != null) { 3816 return mParent.onContextItemSelected(item); 3817 } 3818 return false; 3819 } 3820 3821 /** 3822 * This hook is called whenever the context menu is being closed (either by 3823 * the user canceling the menu with the back/menu button, or when an item is 3824 * selected). 3825 * 3826 * @param menu The context menu that is being closed. 3827 */ 3828 public void onContextMenuClosed(Menu menu) { 3829 if (mParent != null) { 3830 mParent.onContextMenuClosed(menu); 3831 } 3832 } 3833 3834 /** 3835 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3836 */ 3837 @Deprecated 3838 protected Dialog onCreateDialog(int id) { 3839 return null; 3840 } 3841 3842 /** 3843 * Callback for creating dialogs that are managed (saved and restored) for you 3844 * by the activity. The default implementation calls through to 3845 * {@link #onCreateDialog(int)} for compatibility. 3846 * 3847 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3848 * or later, consider instead using a {@link DialogFragment} instead.</em> 3849 * 3850 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3851 * this method the first time, and hang onto it thereafter. Any dialog 3852 * that is created by this method will automatically be saved and restored 3853 * for you, including whether it is showing. 3854 * 3855 * <p>If you would like the activity to manage saving and restoring dialogs 3856 * for you, you should override this method and handle any ids that are 3857 * passed to {@link #showDialog}. 3858 * 3859 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3860 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3861 * 3862 * @param id The id of the dialog. 3863 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3864 * @return The dialog. If you return null, the dialog will not be created. 3865 * 3866 * @see #onPrepareDialog(int, Dialog, Bundle) 3867 * @see #showDialog(int, Bundle) 3868 * @see #dismissDialog(int) 3869 * @see #removeDialog(int) 3870 * 3871 * @deprecated Use the new {@link DialogFragment} class with 3872 * {@link FragmentManager} instead; this is also 3873 * available on older platforms through the Android compatibility package. 3874 */ 3875 @Nullable 3876 @Deprecated 3877 protected Dialog onCreateDialog(int id, Bundle args) { 3878 return onCreateDialog(id); 3879 } 3880 3881 /** 3882 * @deprecated Old no-arguments version of 3883 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3884 */ 3885 @Deprecated 3886 protected void onPrepareDialog(int id, Dialog dialog) { 3887 dialog.setOwnerActivity(this); 3888 } 3889 3890 /** 3891 * Provides an opportunity to prepare a managed dialog before it is being 3892 * shown. The default implementation calls through to 3893 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3894 * 3895 * <p> 3896 * Override this if you need to update a managed dialog based on the state 3897 * of the application each time it is shown. For example, a time picker 3898 * dialog might want to be updated with the current time. You should call 3899 * through to the superclass's implementation. The default implementation 3900 * will set this Activity as the owner activity on the Dialog. 3901 * 3902 * @param id The id of the managed dialog. 3903 * @param dialog The dialog. 3904 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3905 * @see #onCreateDialog(int, Bundle) 3906 * @see #showDialog(int) 3907 * @see #dismissDialog(int) 3908 * @see #removeDialog(int) 3909 * 3910 * @deprecated Use the new {@link DialogFragment} class with 3911 * {@link FragmentManager} instead; this is also 3912 * available on older platforms through the Android compatibility package. 3913 */ 3914 @Deprecated 3915 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3916 onPrepareDialog(id, dialog); 3917 } 3918 3919 /** 3920 * Simple version of {@link #showDialog(int, Bundle)} that does not 3921 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3922 * with null arguments. 3923 * 3924 * @deprecated Use the new {@link DialogFragment} class with 3925 * {@link FragmentManager} instead; this is also 3926 * available on older platforms through the Android compatibility package. 3927 */ 3928 @Deprecated 3929 public final void showDialog(int id) { 3930 showDialog(id, null); 3931 } 3932 3933 /** 3934 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3935 * will be made with the same id the first time this is called for a given 3936 * id. From thereafter, the dialog will be automatically saved and restored. 3937 * 3938 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3939 * or later, consider instead using a {@link DialogFragment} instead.</em> 3940 * 3941 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3942 * be made to provide an opportunity to do any timely preparation. 3943 * 3944 * @param id The id of the managed dialog. 3945 * @param args Arguments to pass through to the dialog. These will be saved 3946 * and restored for you. Note that if the dialog is already created, 3947 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3948 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3949 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3950 * @return Returns true if the Dialog was created; false is returned if 3951 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3952 * 3953 * @see Dialog 3954 * @see #onCreateDialog(int, Bundle) 3955 * @see #onPrepareDialog(int, Dialog, Bundle) 3956 * @see #dismissDialog(int) 3957 * @see #removeDialog(int) 3958 * 3959 * @deprecated Use the new {@link DialogFragment} class with 3960 * {@link FragmentManager} instead; this is also 3961 * available on older platforms through the Android compatibility package. 3962 */ 3963 @Deprecated 3964 public final boolean showDialog(int id, Bundle args) { 3965 if (mManagedDialogs == null) { 3966 mManagedDialogs = new SparseArray<ManagedDialog>(); 3967 } 3968 ManagedDialog md = mManagedDialogs.get(id); 3969 if (md == null) { 3970 md = new ManagedDialog(); 3971 md.mDialog = createDialog(id, null, args); 3972 if (md.mDialog == null) { 3973 return false; 3974 } 3975 mManagedDialogs.put(id, md); 3976 } 3977 3978 md.mArgs = args; 3979 onPrepareDialog(id, md.mDialog, args); 3980 md.mDialog.show(); 3981 return true; 3982 } 3983 3984 /** 3985 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3986 * 3987 * @param id The id of the managed dialog. 3988 * 3989 * @throws IllegalArgumentException if the id was not previously shown via 3990 * {@link #showDialog(int)}. 3991 * 3992 * @see #onCreateDialog(int, Bundle) 3993 * @see #onPrepareDialog(int, Dialog, Bundle) 3994 * @see #showDialog(int) 3995 * @see #removeDialog(int) 3996 * 3997 * @deprecated Use the new {@link DialogFragment} class with 3998 * {@link FragmentManager} instead; this is also 3999 * available on older platforms through the Android compatibility package. 4000 */ 4001 @Deprecated 4002 public final void dismissDialog(int id) { 4003 if (mManagedDialogs == null) { 4004 throw missingDialog(id); 4005 } 4006 4007 final ManagedDialog md = mManagedDialogs.get(id); 4008 if (md == null) { 4009 throw missingDialog(id); 4010 } 4011 md.mDialog.dismiss(); 4012 } 4013 4014 /** 4015 * Creates an exception to throw if a user passed in a dialog id that is 4016 * unexpected. 4017 */ 4018 private IllegalArgumentException missingDialog(int id) { 4019 return new IllegalArgumentException("no dialog with id " + id + " was ever " 4020 + "shown via Activity#showDialog"); 4021 } 4022 4023 /** 4024 * Removes any internal references to a dialog managed by this Activity. 4025 * If the dialog is showing, it will dismiss it as part of the clean up. 4026 * 4027 * <p>This can be useful if you know that you will never show a dialog again and 4028 * want to avoid the overhead of saving and restoring it in the future. 4029 * 4030 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 4031 * will not throw an exception if you try to remove an ID that does not 4032 * currently have an associated dialog.</p> 4033 * 4034 * @param id The id of the managed dialog. 4035 * 4036 * @see #onCreateDialog(int, Bundle) 4037 * @see #onPrepareDialog(int, Dialog, Bundle) 4038 * @see #showDialog(int) 4039 * @see #dismissDialog(int) 4040 * 4041 * @deprecated Use the new {@link DialogFragment} class with 4042 * {@link FragmentManager} instead; this is also 4043 * available on older platforms through the Android compatibility package. 4044 */ 4045 @Deprecated 4046 public final void removeDialog(int id) { 4047 if (mManagedDialogs != null) { 4048 final ManagedDialog md = mManagedDialogs.get(id); 4049 if (md != null) { 4050 md.mDialog.dismiss(); 4051 mManagedDialogs.remove(id); 4052 } 4053 } 4054 } 4055 4056 /** 4057 * This hook is called when the user signals the desire to start a search. 4058 * 4059 * <p>You can use this function as a simple way to launch the search UI, in response to a 4060 * menu item, search button, or other widgets within your activity. Unless overidden, 4061 * calling this function is the same as calling 4062 * {@link #startSearch startSearch(null, false, null, false)}, which launches 4063 * search for the current activity as specified in its manifest, see {@link SearchManager}. 4064 * 4065 * <p>You can override this function to force global search, e.g. in response to a dedicated 4066 * search key, or to block search entirely (by simply returning false). 4067 * 4068 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 4069 * implementation changes to simply return false and you must supply your own custom 4070 * implementation if you want to support search.</p> 4071 * 4072 * @param searchEvent The {@link SearchEvent} that signaled this search. 4073 * @return Returns {@code true} if search launched, and {@code false} if the activity does 4074 * not respond to search. The default implementation always returns {@code true}, except 4075 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 4076 * 4077 * @see android.app.SearchManager 4078 */ 4079 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 4080 mSearchEvent = searchEvent; 4081 boolean result = onSearchRequested(); 4082 mSearchEvent = null; 4083 return result; 4084 } 4085 4086 /** 4087 * @see #onSearchRequested(SearchEvent) 4088 */ 4089 public boolean onSearchRequested() { 4090 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 4091 != Configuration.UI_MODE_TYPE_TELEVISION) { 4092 startSearch(null, false, null, false); 4093 return true; 4094 } else { 4095 return false; 4096 } 4097 } 4098 4099 /** 4100 * During the onSearchRequested() callbacks, this function will return the 4101 * {@link SearchEvent} that triggered the callback, if it exists. 4102 * 4103 * @return SearchEvent The SearchEvent that triggered the {@link 4104 * #onSearchRequested} callback. 4105 */ 4106 public final SearchEvent getSearchEvent() { 4107 return mSearchEvent; 4108 } 4109 4110 /** 4111 * This hook is called to launch the search UI. 4112 * 4113 * <p>It is typically called from onSearchRequested(), either directly from 4114 * Activity.onSearchRequested() or from an overridden version in any given 4115 * Activity. If your goal is simply to activate search, it is preferred to call 4116 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 4117 * is to inject specific data such as context data, it is preferred to <i>override</i> 4118 * onSearchRequested(), so that any callers to it will benefit from the override. 4119 * 4120 * @param initialQuery Any non-null non-empty string will be inserted as 4121 * pre-entered text in the search query box. 4122 * @param selectInitialQuery If true, the initial query will be preselected, which means that 4123 * any further typing will replace it. This is useful for cases where an entire pre-formed 4124 * query is being inserted. If false, the selection point will be placed at the end of the 4125 * inserted query. This is useful when the inserted query is text that the user entered, 4126 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 4127 * if initialQuery is a non-empty string.</i> 4128 * @param appSearchData An application can insert application-specific 4129 * context here, in order to improve quality or specificity of its own 4130 * searches. This data will be returned with SEARCH intent(s). Null if 4131 * no extra data is required. 4132 * @param globalSearch If false, this will only launch the search that has been specifically 4133 * defined by the application (which is usually defined as a local search). If no default 4134 * search is defined in the current application or activity, global search will be launched. 4135 * If true, this will always launch a platform-global (e.g. web-based) search instead. 4136 * 4137 * @see android.app.SearchManager 4138 * @see #onSearchRequested 4139 */ 4140 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 4141 @Nullable Bundle appSearchData, boolean globalSearch) { 4142 ensureSearchManager(); 4143 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 4144 appSearchData, globalSearch); 4145 } 4146 4147 /** 4148 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 4149 * the search dialog. Made available for testing purposes. 4150 * 4151 * @param query The query to trigger. If empty, the request will be ignored. 4152 * @param appSearchData An application can insert application-specific 4153 * context here, in order to improve quality or specificity of its own 4154 * searches. This data will be returned with SEARCH intent(s). Null if 4155 * no extra data is required. 4156 */ 4157 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 4158 ensureSearchManager(); 4159 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 4160 } 4161 4162 /** 4163 * Request that key events come to this activity. Use this if your 4164 * activity has no views with focus, but the activity still wants 4165 * a chance to process key events. 4166 * 4167 * @see android.view.Window#takeKeyEvents 4168 */ 4169 public void takeKeyEvents(boolean get) { 4170 getWindow().takeKeyEvents(get); 4171 } 4172 4173 /** 4174 * Enable extended window features. This is a convenience for calling 4175 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 4176 * 4177 * @param featureId The desired feature as defined in 4178 * {@link android.view.Window}. 4179 * @return Returns true if the requested feature is supported and now 4180 * enabled. 4181 * 4182 * @see android.view.Window#requestFeature 4183 */ 4184 public final boolean requestWindowFeature(int featureId) { 4185 return getWindow().requestFeature(featureId); 4186 } 4187 4188 /** 4189 * Convenience for calling 4190 * {@link android.view.Window#setFeatureDrawableResource}. 4191 */ 4192 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 4193 getWindow().setFeatureDrawableResource(featureId, resId); 4194 } 4195 4196 /** 4197 * Convenience for calling 4198 * {@link android.view.Window#setFeatureDrawableUri}. 4199 */ 4200 public final void setFeatureDrawableUri(int featureId, Uri uri) { 4201 getWindow().setFeatureDrawableUri(featureId, uri); 4202 } 4203 4204 /** 4205 * Convenience for calling 4206 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 4207 */ 4208 public final void setFeatureDrawable(int featureId, Drawable drawable) { 4209 getWindow().setFeatureDrawable(featureId, drawable); 4210 } 4211 4212 /** 4213 * Convenience for calling 4214 * {@link android.view.Window#setFeatureDrawableAlpha}. 4215 */ 4216 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 4217 getWindow().setFeatureDrawableAlpha(featureId, alpha); 4218 } 4219 4220 /** 4221 * Convenience for calling 4222 * {@link android.view.Window#getLayoutInflater}. 4223 */ 4224 @NonNull 4225 public LayoutInflater getLayoutInflater() { 4226 return getWindow().getLayoutInflater(); 4227 } 4228 4229 /** 4230 * Returns a {@link MenuInflater} with this context. 4231 */ 4232 @NonNull 4233 public MenuInflater getMenuInflater() { 4234 // Make sure that action views can get an appropriate theme. 4235 if (mMenuInflater == null) { 4236 initWindowDecorActionBar(); 4237 if (mActionBar != null) { 4238 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 4239 } else { 4240 mMenuInflater = new MenuInflater(this); 4241 } 4242 } 4243 return mMenuInflater; 4244 } 4245 4246 @Override 4247 public void setTheme(int resid) { 4248 super.setTheme(resid); 4249 mWindow.setTheme(resid); 4250 } 4251 4252 @Override 4253 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 4254 boolean first) { 4255 if (mParent == null) { 4256 super.onApplyThemeResource(theme, resid, first); 4257 } else { 4258 try { 4259 theme.setTo(mParent.getTheme()); 4260 } catch (Exception e) { 4261 // Empty 4262 } 4263 theme.applyStyle(resid, false); 4264 } 4265 4266 // Get the primary color and update the TaskDescription for this activity 4267 TypedArray a = theme.obtainStyledAttributes( 4268 com.android.internal.R.styleable.ActivityTaskDescription); 4269 if (mTaskDescription.getPrimaryColor() == 0) { 4270 int colorPrimary = a.getColor( 4271 com.android.internal.R.styleable.ActivityTaskDescription_colorPrimary, 0); 4272 if (colorPrimary != 0 && Color.alpha(colorPrimary) == 0xFF) { 4273 mTaskDescription.setPrimaryColor(colorPrimary); 4274 } 4275 } 4276 4277 int colorBackground = a.getColor( 4278 com.android.internal.R.styleable.ActivityTaskDescription_colorBackground, 0); 4279 if (colorBackground != 0 && Color.alpha(colorBackground) == 0xFF) { 4280 mTaskDescription.setBackgroundColor(colorBackground); 4281 } 4282 4283 final int statusBarColor = a.getColor( 4284 com.android.internal.R.styleable.ActivityTaskDescription_statusBarColor, 0); 4285 if (statusBarColor != 0) { 4286 mTaskDescription.setStatusBarColor(statusBarColor); 4287 } 4288 4289 final int navigationBarColor = a.getColor( 4290 com.android.internal.R.styleable.ActivityTaskDescription_navigationBarColor, 0); 4291 if (navigationBarColor != 0) { 4292 mTaskDescription.setNavigationBarColor(navigationBarColor); 4293 } 4294 4295 a.recycle(); 4296 setTaskDescription(mTaskDescription); 4297 } 4298 4299 /** 4300 * Requests permissions to be granted to this application. These permissions 4301 * must be requested in your manifest, they should not be granted to your app, 4302 * and they should have protection level {@link android.content.pm.PermissionInfo 4303 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 4304 * the platform or a third-party app. 4305 * <p> 4306 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 4307 * are granted at install time if requested in the manifest. Signature permissions 4308 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 4309 * install time if requested in the manifest and the signature of your app matches 4310 * the signature of the app declaring the permissions. 4311 * </p> 4312 * <p> 4313 * If your app does not have the requested permissions the user will be presented 4314 * with UI for accepting them. After the user has accepted or rejected the 4315 * requested permissions you will receive a callback on {@link 4316 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4317 * permissions were granted or not. 4318 * </p> 4319 * <p> 4320 * Note that requesting a permission does not guarantee it will be granted and 4321 * your app should be able to run without having this permission. 4322 * </p> 4323 * <p> 4324 * This method may start an activity allowing the user to choose which permissions 4325 * to grant and which to reject. Hence, you should be prepared that your activity 4326 * may be paused and resumed. Further, granting some permissions may require 4327 * a restart of you application. In such a case, the system will recreate the 4328 * activity stack before delivering the result to {@link 4329 * #onRequestPermissionsResult(int, String[], int[])}. 4330 * </p> 4331 * <p> 4332 * When checking whether you have a permission you should use {@link 4333 * #checkSelfPermission(String)}. 4334 * </p> 4335 * <p> 4336 * Calling this API for permissions already granted to your app would show UI 4337 * to the user to decide whether the app can still hold these permissions. This 4338 * can be useful if the way your app uses data guarded by the permissions 4339 * changes significantly. 4340 * </p> 4341 * <p> 4342 * You cannot request a permission if your activity sets {@link 4343 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4344 * <code>true</code> because in this case the activity would not receive 4345 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4346 * </p> 4347 * <p> 4348 * The <a href="http://developer.android.com/samples/RuntimePermissions/index.html"> 4349 * RuntimePermissions</a> sample app demonstrates how to use this method to 4350 * request permissions at run time. 4351 * </p> 4352 * 4353 * @param permissions The requested permissions. Must me non-null and not empty. 4354 * @param requestCode Application specific request code to match with a result 4355 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4356 * Should be >= 0. 4357 * 4358 * @throws IllegalArgumentException if requestCode is negative. 4359 * 4360 * @see #onRequestPermissionsResult(int, String[], int[]) 4361 * @see #checkSelfPermission(String) 4362 * @see #shouldShowRequestPermissionRationale(String) 4363 */ 4364 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4365 if (requestCode < 0) { 4366 throw new IllegalArgumentException("requestCode should be >= 0"); 4367 } 4368 if (mHasCurrentPermissionsRequest) { 4369 Log.w(TAG, "Can reqeust only one set of permissions at a time"); 4370 // Dispatch the callback with empty arrays which means a cancellation. 4371 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4372 return; 4373 } 4374 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4375 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4376 mHasCurrentPermissionsRequest = true; 4377 } 4378 4379 /** 4380 * Callback for the result from requesting permissions. This method 4381 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4382 * <p> 4383 * <strong>Note:</strong> It is possible that the permissions request interaction 4384 * with the user is interrupted. In this case you will receive empty permissions 4385 * and results arrays which should be treated as a cancellation. 4386 * </p> 4387 * 4388 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4389 * @param permissions The requested permissions. Never null. 4390 * @param grantResults The grant results for the corresponding permissions 4391 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4392 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4393 * 4394 * @see #requestPermissions(String[], int) 4395 */ 4396 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4397 @NonNull int[] grantResults) { 4398 /* callback - no nothing */ 4399 } 4400 4401 /** 4402 * Gets whether you should show UI with rationale for requesting a permission. 4403 * You should do this only if you do not have the permission and the context in 4404 * which the permission is requested does not clearly communicate to the user 4405 * what would be the benefit from granting this permission. 4406 * <p> 4407 * For example, if you write a camera app, requesting the camera permission 4408 * would be expected by the user and no rationale for why it is requested is 4409 * needed. If however, the app needs location for tagging photos then a non-tech 4410 * savvy user may wonder how location is related to taking photos. In this case 4411 * you may choose to show UI with rationale of requesting this permission. 4412 * </p> 4413 * 4414 * @param permission A permission your app wants to request. 4415 * @return Whether you can show permission rationale UI. 4416 * 4417 * @see #checkSelfPermission(String) 4418 * @see #requestPermissions(String[], int) 4419 * @see #onRequestPermissionsResult(int, String[], int[]) 4420 */ 4421 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4422 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4423 } 4424 4425 /** 4426 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4427 * with no options. 4428 * 4429 * @param intent The intent to start. 4430 * @param requestCode If >= 0, this code will be returned in 4431 * onActivityResult() when the activity exits. 4432 * 4433 * @throws android.content.ActivityNotFoundException 4434 * 4435 * @see #startActivity 4436 */ 4437 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4438 startActivityForResult(intent, requestCode, null); 4439 } 4440 4441 /** 4442 * Launch an activity for which you would like a result when it finished. 4443 * When this activity exits, your 4444 * onActivityResult() method will be called with the given requestCode. 4445 * Using a negative requestCode is the same as calling 4446 * {@link #startActivity} (the activity is not launched as a sub-activity). 4447 * 4448 * <p>Note that this method should only be used with Intent protocols 4449 * that are defined to return a result. In other protocols (such as 4450 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4451 * not get the result when you expect. For example, if the activity you 4452 * are launching uses {@link Intent#FLAG_ACTIVITY_NEW_TASK}, it will not 4453 * run in your task and thus you will immediately receive a cancel result. 4454 * 4455 * <p>As a special case, if you call startActivityForResult() with a requestCode 4456 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4457 * activity, then your window will not be displayed until a result is 4458 * returned back from the started activity. This is to avoid visible 4459 * flickering when redirecting to another activity. 4460 * 4461 * <p>This method throws {@link android.content.ActivityNotFoundException} 4462 * if there was no Activity found to run the given Intent. 4463 * 4464 * @param intent The intent to start. 4465 * @param requestCode If >= 0, this code will be returned in 4466 * onActivityResult() when the activity exits. 4467 * @param options Additional options for how the Activity should be started. 4468 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4469 * Context.startActivity(Intent, Bundle)} for more details. 4470 * 4471 * @throws android.content.ActivityNotFoundException 4472 * 4473 * @see #startActivity 4474 */ 4475 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4476 @Nullable Bundle options) { 4477 if (mParent == null) { 4478 options = transferSpringboardActivityOptions(options); 4479 Instrumentation.ActivityResult ar = 4480 mInstrumentation.execStartActivity( 4481 this, mMainThread.getApplicationThread(), mToken, this, 4482 intent, requestCode, options); 4483 if (ar != null) { 4484 mMainThread.sendActivityResult( 4485 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4486 ar.getResultData()); 4487 } 4488 if (requestCode >= 0) { 4489 // If this start is requesting a result, we can avoid making 4490 // the activity visible until the result is received. Setting 4491 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4492 // activity hidden during this time, to avoid flickering. 4493 // This can only be done when a result is requested because 4494 // that guarantees we will get information back when the 4495 // activity is finished, no matter what happens to it. 4496 mStartedActivity = true; 4497 } 4498 4499 cancelInputsAndStartExitTransition(options); 4500 // TODO Consider clearing/flushing other event sources and events for child windows. 4501 } else { 4502 if (options != null) { 4503 mParent.startActivityFromChild(this, intent, requestCode, options); 4504 } else { 4505 // Note we want to go through this method for compatibility with 4506 // existing applications that may have overridden it. 4507 mParent.startActivityFromChild(this, intent, requestCode); 4508 } 4509 } 4510 } 4511 4512 /** 4513 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4514 * 4515 * @param options The ActivityOptions bundle used to start an Activity. 4516 */ 4517 private void cancelInputsAndStartExitTransition(Bundle options) { 4518 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4519 if (decor != null) { 4520 decor.cancelPendingInputEvents(); 4521 } 4522 if (options != null && !isTopOfTask()) { 4523 mActivityTransitionState.startExitOutTransition(this, options); 4524 } 4525 } 4526 4527 /** 4528 * Returns whether there are any activity transitions currently running on this 4529 * activity. A return value of {@code true} can mean that either an enter or 4530 * exit transition is running, including whether the background of the activity 4531 * is animating as a part of that transition. 4532 * 4533 * @return true if a transition is currently running on this activity, false otherwise. 4534 */ 4535 public boolean isActivityTransitionRunning() { 4536 return mActivityTransitionState.isTransitionRunning(); 4537 } 4538 4539 private Bundle transferSpringboardActivityOptions(Bundle options) { 4540 if (options == null && (mWindow != null && !mWindow.isActive())) { 4541 final ActivityOptions activityOptions = getActivityOptions(); 4542 if (activityOptions != null && 4543 activityOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { 4544 return activityOptions.toBundle(); 4545 } 4546 } 4547 return options; 4548 } 4549 4550 /** 4551 * @hide Implement to provide correct calling token. 4552 */ 4553 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4554 startActivityForResultAsUser(intent, requestCode, null, user); 4555 } 4556 4557 /** 4558 * @hide Implement to provide correct calling token. 4559 */ 4560 public void startActivityForResultAsUser(Intent intent, int requestCode, 4561 @Nullable Bundle options, UserHandle user) { 4562 startActivityForResultAsUser(intent, mEmbeddedID, requestCode, options, user); 4563 } 4564 4565 /** 4566 * @hide Implement to provide correct calling token. 4567 */ 4568 public void startActivityForResultAsUser(Intent intent, String resultWho, int requestCode, 4569 @Nullable Bundle options, UserHandle user) { 4570 if (mParent != null) { 4571 throw new RuntimeException("Can't be called from a child"); 4572 } 4573 options = transferSpringboardActivityOptions(options); 4574 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4575 this, mMainThread.getApplicationThread(), mToken, resultWho, intent, requestCode, 4576 options, user); 4577 if (ar != null) { 4578 mMainThread.sendActivityResult( 4579 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4580 } 4581 if (requestCode >= 0) { 4582 // If this start is requesting a result, we can avoid making 4583 // the activity visible until the result is received. Setting 4584 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4585 // activity hidden during this time, to avoid flickering. 4586 // This can only be done when a result is requested because 4587 // that guarantees we will get information back when the 4588 // activity is finished, no matter what happens to it. 4589 mStartedActivity = true; 4590 } 4591 4592 cancelInputsAndStartExitTransition(options); 4593 } 4594 4595 /** 4596 * @hide Implement to provide correct calling token. 4597 */ 4598 public void startActivityAsUser(Intent intent, UserHandle user) { 4599 startActivityAsUser(intent, null, user); 4600 } 4601 4602 /** 4603 * @hide Implement to provide correct calling token. 4604 */ 4605 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4606 if (mParent != null) { 4607 throw new RuntimeException("Can't be called from a child"); 4608 } 4609 options = transferSpringboardActivityOptions(options); 4610 Instrumentation.ActivityResult ar = 4611 mInstrumentation.execStartActivity( 4612 this, mMainThread.getApplicationThread(), mToken, mEmbeddedID, 4613 intent, -1, options, user); 4614 if (ar != null) { 4615 mMainThread.sendActivityResult( 4616 mToken, mEmbeddedID, -1, ar.getResultCode(), 4617 ar.getResultData()); 4618 } 4619 cancelInputsAndStartExitTransition(options); 4620 } 4621 4622 /** 4623 * Start a new activity as if it was started by the activity that started our 4624 * current activity. This is for the resolver and chooser activities, which operate 4625 * as intermediaries that dispatch their intent to the target the user selects -- to 4626 * do this, they must perform all security checks including permission grants as if 4627 * their launch had come from the original activity. 4628 * @param intent The Intent to start. 4629 * @param options ActivityOptions or null. 4630 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4631 * caller it is doing the start is, is actually allowed to start the target activity. 4632 * If you set this to true, you must set an explicit component in the Intent and do any 4633 * appropriate security checks yourself. 4634 * @param userId The user the new activity should run as. 4635 * @hide 4636 */ 4637 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4638 boolean ignoreTargetSecurity, int userId) { 4639 if (mParent != null) { 4640 throw new RuntimeException("Can't be called from a child"); 4641 } 4642 options = transferSpringboardActivityOptions(options); 4643 Instrumentation.ActivityResult ar = 4644 mInstrumentation.execStartActivityAsCaller( 4645 this, mMainThread.getApplicationThread(), mToken, this, 4646 intent, -1, options, ignoreTargetSecurity, userId); 4647 if (ar != null) { 4648 mMainThread.sendActivityResult( 4649 mToken, mEmbeddedID, -1, ar.getResultCode(), 4650 ar.getResultData()); 4651 } 4652 cancelInputsAndStartExitTransition(options); 4653 } 4654 4655 /** 4656 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4657 * Intent, int, int, int, Bundle)} with no options. 4658 * 4659 * @param intent The IntentSender to launch. 4660 * @param requestCode If >= 0, this code will be returned in 4661 * onActivityResult() when the activity exits. 4662 * @param fillInIntent If non-null, this will be provided as the 4663 * intent parameter to {@link IntentSender#sendIntent}. 4664 * @param flagsMask Intent flags in the original IntentSender that you 4665 * would like to change. 4666 * @param flagsValues Desired values for any bits set in 4667 * <var>flagsMask</var> 4668 * @param extraFlags Always set to 0. 4669 */ 4670 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4671 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4672 throws IntentSender.SendIntentException { 4673 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4674 flagsValues, extraFlags, null); 4675 } 4676 4677 /** 4678 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4679 * to use a IntentSender to describe the activity to be started. If 4680 * the IntentSender is for an activity, that activity will be started 4681 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4682 * here; otherwise, its associated action will be executed (such as 4683 * sending a broadcast) as if you had called 4684 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4685 * 4686 * @param intent The IntentSender to launch. 4687 * @param requestCode If >= 0, this code will be returned in 4688 * onActivityResult() when the activity exits. 4689 * @param fillInIntent If non-null, this will be provided as the 4690 * intent parameter to {@link IntentSender#sendIntent}. 4691 * @param flagsMask Intent flags in the original IntentSender that you 4692 * would like to change. 4693 * @param flagsValues Desired values for any bits set in 4694 * <var>flagsMask</var> 4695 * @param extraFlags Always set to 0. 4696 * @param options Additional options for how the Activity should be started. 4697 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4698 * Context.startActivity(Intent, Bundle)} for more details. If options 4699 * have also been supplied by the IntentSender, options given here will 4700 * override any that conflict with those given by the IntentSender. 4701 */ 4702 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4703 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4704 Bundle options) throws IntentSender.SendIntentException { 4705 if (mParent == null) { 4706 startIntentSenderForResultInner(intent, mEmbeddedID, requestCode, fillInIntent, 4707 flagsMask, flagsValues, options); 4708 } else if (options != null) { 4709 mParent.startIntentSenderFromChild(this, intent, requestCode, 4710 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4711 } else { 4712 // Note we want to go through this call for compatibility with 4713 // existing applications that may have overridden the method. 4714 mParent.startIntentSenderFromChild(this, intent, requestCode, 4715 fillInIntent, flagsMask, flagsValues, extraFlags); 4716 } 4717 } 4718 4719 private void startIntentSenderForResultInner(IntentSender intent, String who, int requestCode, 4720 Intent fillInIntent, int flagsMask, int flagsValues, 4721 Bundle options) 4722 throws IntentSender.SendIntentException { 4723 try { 4724 String resolvedType = null; 4725 if (fillInIntent != null) { 4726 fillInIntent.migrateExtraStreamToClipData(); 4727 fillInIntent.prepareToLeaveProcess(this); 4728 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4729 } 4730 int result = ActivityManager.getService() 4731 .startActivityIntentSender(mMainThread.getApplicationThread(), 4732 intent != null ? intent.getTarget() : null, 4733 intent != null ? intent.getWhitelistToken() : null, 4734 fillInIntent, resolvedType, mToken, who, 4735 requestCode, flagsMask, flagsValues, options); 4736 if (result == ActivityManager.START_CANCELED) { 4737 throw new IntentSender.SendIntentException(); 4738 } 4739 Instrumentation.checkStartActivityResult(result, null); 4740 } catch (RemoteException e) { 4741 } 4742 if (requestCode >= 0) { 4743 // If this start is requesting a result, we can avoid making 4744 // the activity visible until the result is received. Setting 4745 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4746 // activity hidden during this time, to avoid flickering. 4747 // This can only be done when a result is requested because 4748 // that guarantees we will get information back when the 4749 // activity is finished, no matter what happens to it. 4750 mStartedActivity = true; 4751 } 4752 } 4753 4754 /** 4755 * Same as {@link #startActivity(Intent, Bundle)} with no options 4756 * specified. 4757 * 4758 * @param intent The intent to start. 4759 * 4760 * @throws android.content.ActivityNotFoundException 4761 * 4762 * @see #startActivity(Intent, Bundle) 4763 * @see #startActivityForResult 4764 */ 4765 @Override 4766 public void startActivity(Intent intent) { 4767 this.startActivity(intent, null); 4768 } 4769 4770 /** 4771 * Launch a new activity. You will not receive any information about when 4772 * the activity exits. This implementation overrides the base version, 4773 * providing information about 4774 * the activity performing the launch. Because of this additional 4775 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4776 * required; if not specified, the new activity will be added to the 4777 * task of the caller. 4778 * 4779 * <p>This method throws {@link android.content.ActivityNotFoundException} 4780 * if there was no Activity found to run the given Intent. 4781 * 4782 * @param intent The intent to start. 4783 * @param options Additional options for how the Activity should be started. 4784 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4785 * Context.startActivity(Intent, Bundle)} for more details. 4786 * 4787 * @throws android.content.ActivityNotFoundException 4788 * 4789 * @see #startActivity(Intent) 4790 * @see #startActivityForResult 4791 */ 4792 @Override 4793 public void startActivity(Intent intent, @Nullable Bundle options) { 4794 if (options != null) { 4795 startActivityForResult(intent, -1, options); 4796 } else { 4797 // Note we want to go through this call for compatibility with 4798 // applications that may have overridden the method. 4799 startActivityForResult(intent, -1); 4800 } 4801 } 4802 4803 /** 4804 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4805 * specified. 4806 * 4807 * @param intents The intents to start. 4808 * 4809 * @throws android.content.ActivityNotFoundException 4810 * 4811 * @see #startActivities(Intent[], Bundle) 4812 * @see #startActivityForResult 4813 */ 4814 @Override 4815 public void startActivities(Intent[] intents) { 4816 startActivities(intents, null); 4817 } 4818 4819 /** 4820 * Launch a new activity. You will not receive any information about when 4821 * the activity exits. This implementation overrides the base version, 4822 * providing information about 4823 * the activity performing the launch. Because of this additional 4824 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4825 * required; if not specified, the new activity will be added to the 4826 * task of the caller. 4827 * 4828 * <p>This method throws {@link android.content.ActivityNotFoundException} 4829 * if there was no Activity found to run the given Intent. 4830 * 4831 * @param intents The intents to start. 4832 * @param options Additional options for how the Activity should be started. 4833 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4834 * Context.startActivity(Intent, Bundle)} for more details. 4835 * 4836 * @throws android.content.ActivityNotFoundException 4837 * 4838 * @see #startActivities(Intent[]) 4839 * @see #startActivityForResult 4840 */ 4841 @Override 4842 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4843 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4844 mToken, this, intents, options); 4845 } 4846 4847 /** 4848 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4849 * with no options. 4850 * 4851 * @param intent The IntentSender to launch. 4852 * @param fillInIntent If non-null, this will be provided as the 4853 * intent parameter to {@link IntentSender#sendIntent}. 4854 * @param flagsMask Intent flags in the original IntentSender that you 4855 * would like to change. 4856 * @param flagsValues Desired values for any bits set in 4857 * <var>flagsMask</var> 4858 * @param extraFlags Always set to 0. 4859 */ 4860 public void startIntentSender(IntentSender intent, 4861 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4862 throws IntentSender.SendIntentException { 4863 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4864 extraFlags, null); 4865 } 4866 4867 /** 4868 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4869 * to start; see 4870 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4871 * for more information. 4872 * 4873 * @param intent The IntentSender to launch. 4874 * @param fillInIntent If non-null, this will be provided as the 4875 * intent parameter to {@link IntentSender#sendIntent}. 4876 * @param flagsMask Intent flags in the original IntentSender that you 4877 * would like to change. 4878 * @param flagsValues Desired values for any bits set in 4879 * <var>flagsMask</var> 4880 * @param extraFlags Always set to 0. 4881 * @param options Additional options for how the Activity should be started. 4882 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4883 * Context.startActivity(Intent, Bundle)} for more details. If options 4884 * have also been supplied by the IntentSender, options given here will 4885 * override any that conflict with those given by the IntentSender. 4886 */ 4887 public void startIntentSender(IntentSender intent, 4888 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4889 Bundle options) throws IntentSender.SendIntentException { 4890 if (options != null) { 4891 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4892 flagsValues, extraFlags, options); 4893 } else { 4894 // Note we want to go through this call for compatibility with 4895 // applications that may have overridden the method. 4896 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4897 flagsValues, extraFlags); 4898 } 4899 } 4900 4901 /** 4902 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4903 * with no options. 4904 * 4905 * @param intent The intent to start. 4906 * @param requestCode If >= 0, this code will be returned in 4907 * onActivityResult() when the activity exits, as described in 4908 * {@link #startActivityForResult}. 4909 * 4910 * @return If a new activity was launched then true is returned; otherwise 4911 * false is returned and you must handle the Intent yourself. 4912 * 4913 * @see #startActivity 4914 * @see #startActivityForResult 4915 */ 4916 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4917 int requestCode) { 4918 return startActivityIfNeeded(intent, requestCode, null); 4919 } 4920 4921 /** 4922 * A special variation to launch an activity only if a new activity 4923 * instance is needed to handle the given Intent. In other words, this is 4924 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4925 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4926 * singleTask or singleTop 4927 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4928 * and the activity 4929 * that handles <var>intent</var> is the same as your currently running 4930 * activity, then a new instance is not needed. In this case, instead of 4931 * the normal behavior of calling {@link #onNewIntent} this function will 4932 * return and you can handle the Intent yourself. 4933 * 4934 * <p>This function can only be called from a top-level activity; if it is 4935 * called from a child activity, a runtime exception will be thrown. 4936 * 4937 * @param intent The intent to start. 4938 * @param requestCode If >= 0, this code will be returned in 4939 * onActivityResult() when the activity exits, as described in 4940 * {@link #startActivityForResult}. 4941 * @param options Additional options for how the Activity should be started. 4942 * See {@link android.content.Context#startActivity(Intent, Bundle)} 4943 * Context.startActivity(Intent, Bundle)} for more details. 4944 * 4945 * @return If a new activity was launched then true is returned; otherwise 4946 * false is returned and you must handle the Intent yourself. 4947 * 4948 * @see #startActivity 4949 * @see #startActivityForResult 4950 */ 4951 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4952 int requestCode, @Nullable Bundle options) { 4953 if (mParent == null) { 4954 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4955 try { 4956 Uri referrer = onProvideReferrer(); 4957 if (referrer != null) { 4958 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4959 } 4960 intent.migrateExtraStreamToClipData(); 4961 intent.prepareToLeaveProcess(this); 4962 result = ActivityManager.getService() 4963 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4964 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4965 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4966 null, options); 4967 } catch (RemoteException e) { 4968 // Empty 4969 } 4970 4971 Instrumentation.checkStartActivityResult(result, intent); 4972 4973 if (requestCode >= 0) { 4974 // If this start is requesting a result, we can avoid making 4975 // the activity visible until the result is received. Setting 4976 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4977 // activity hidden during this time, to avoid flickering. 4978 // This can only be done when a result is requested because 4979 // that guarantees we will get information back when the 4980 // activity is finished, no matter what happens to it. 4981 mStartedActivity = true; 4982 } 4983 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4984 } 4985 4986 throw new UnsupportedOperationException( 4987 "startActivityIfNeeded can only be called from a top-level activity"); 4988 } 4989 4990 /** 4991 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4992 * no options. 4993 * 4994 * @param intent The intent to dispatch to the next activity. For 4995 * correct behavior, this must be the same as the Intent that started 4996 * your own activity; the only changes you can make are to the extras 4997 * inside of it. 4998 * 4999 * @return Returns a boolean indicating whether there was another Activity 5000 * to start: true if there was a next activity to start, false if there 5001 * wasn't. In general, if true is returned you will then want to call 5002 * finish() on yourself. 5003 */ 5004 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 5005 return startNextMatchingActivity(intent, null); 5006 } 5007 5008 /** 5009 * Special version of starting an activity, for use when you are replacing 5010 * other activity components. You can use this to hand the Intent off 5011 * to the next Activity that can handle it. You typically call this in 5012 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 5013 * 5014 * @param intent The intent to dispatch to the next activity. For 5015 * correct behavior, this must be the same as the Intent that started 5016 * your own activity; the only changes you can make are to the extras 5017 * inside of it. 5018 * @param options Additional options for how the Activity should be started. 5019 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5020 * Context.startActivity(Intent, Bundle)} for more details. 5021 * 5022 * @return Returns a boolean indicating whether there was another Activity 5023 * to start: true if there was a next activity to start, false if there 5024 * wasn't. In general, if true is returned you will then want to call 5025 * finish() on yourself. 5026 */ 5027 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 5028 @Nullable Bundle options) { 5029 if (mParent == null) { 5030 try { 5031 intent.migrateExtraStreamToClipData(); 5032 intent.prepareToLeaveProcess(this); 5033 return ActivityManager.getService() 5034 .startNextMatchingActivity(mToken, intent, options); 5035 } catch (RemoteException e) { 5036 // Empty 5037 } 5038 return false; 5039 } 5040 5041 throw new UnsupportedOperationException( 5042 "startNextMatchingActivity can only be called from a top-level activity"); 5043 } 5044 5045 /** 5046 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 5047 * with no options. 5048 * 5049 * @param child The activity making the call. 5050 * @param intent The intent to start. 5051 * @param requestCode Reply request code. < 0 if reply is not requested. 5052 * 5053 * @throws android.content.ActivityNotFoundException 5054 * 5055 * @see #startActivity 5056 * @see #startActivityForResult 5057 */ 5058 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5059 int requestCode) { 5060 startActivityFromChild(child, intent, requestCode, null); 5061 } 5062 5063 /** 5064 * This is called when a child activity of this one calls its 5065 * {@link #startActivity} or {@link #startActivityForResult} method. 5066 * 5067 * <p>This method throws {@link android.content.ActivityNotFoundException} 5068 * if there was no Activity found to run the given Intent. 5069 * 5070 * @param child The activity making the call. 5071 * @param intent The intent to start. 5072 * @param requestCode Reply request code. < 0 if reply is not requested. 5073 * @param options Additional options for how the Activity should be started. 5074 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5075 * Context.startActivity(Intent, Bundle)} for more details. 5076 * 5077 * @throws android.content.ActivityNotFoundException 5078 * 5079 * @see #startActivity 5080 * @see #startActivityForResult 5081 */ 5082 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 5083 int requestCode, @Nullable Bundle options) { 5084 options = transferSpringboardActivityOptions(options); 5085 Instrumentation.ActivityResult ar = 5086 mInstrumentation.execStartActivity( 5087 this, mMainThread.getApplicationThread(), mToken, child, 5088 intent, requestCode, options); 5089 if (ar != null) { 5090 mMainThread.sendActivityResult( 5091 mToken, child.mEmbeddedID, requestCode, 5092 ar.getResultCode(), ar.getResultData()); 5093 } 5094 cancelInputsAndStartExitTransition(options); 5095 } 5096 5097 /** 5098 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 5099 * with no options. 5100 * 5101 * @param fragment The fragment making the call. 5102 * @param intent The intent to start. 5103 * @param requestCode Reply request code. < 0 if reply is not requested. 5104 * 5105 * @throws android.content.ActivityNotFoundException 5106 * 5107 * @see Fragment#startActivity 5108 * @see Fragment#startActivityForResult 5109 */ 5110 public void startActivityFromFragment(@NonNull Fragment fragment, 5111 @RequiresPermission Intent intent, int requestCode) { 5112 startActivityFromFragment(fragment, intent, requestCode, null); 5113 } 5114 5115 /** 5116 * This is called when a Fragment in this activity calls its 5117 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 5118 * method. 5119 * 5120 * <p>This method throws {@link android.content.ActivityNotFoundException} 5121 * if there was no Activity found to run the given Intent. 5122 * 5123 * @param fragment The fragment making the call. 5124 * @param intent The intent to start. 5125 * @param requestCode Reply request code. < 0 if reply is not requested. 5126 * @param options Additional options for how the Activity should be started. 5127 * See {@link android.content.Context#startActivity(Intent, Bundle)} 5128 * Context.startActivity(Intent, Bundle)} for more details. 5129 * 5130 * @throws android.content.ActivityNotFoundException 5131 * 5132 * @see Fragment#startActivity 5133 * @see Fragment#startActivityForResult 5134 */ 5135 public void startActivityFromFragment(@NonNull Fragment fragment, 5136 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 5137 startActivityForResult(fragment.mWho, intent, requestCode, options); 5138 } 5139 5140 /** 5141 * @hide 5142 */ 5143 public void startActivityAsUserFromFragment(@NonNull Fragment fragment, 5144 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options, 5145 UserHandle user) { 5146 startActivityForResultAsUser(intent, fragment.mWho, requestCode, options, user); 5147 } 5148 5149 /** 5150 * @hide 5151 */ 5152 @Override 5153 public void startActivityForResult( 5154 String who, Intent intent, int requestCode, @Nullable Bundle options) { 5155 Uri referrer = onProvideReferrer(); 5156 if (referrer != null) { 5157 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 5158 } 5159 options = transferSpringboardActivityOptions(options); 5160 Instrumentation.ActivityResult ar = 5161 mInstrumentation.execStartActivity( 5162 this, mMainThread.getApplicationThread(), mToken, who, 5163 intent, requestCode, options); 5164 if (ar != null) { 5165 mMainThread.sendActivityResult( 5166 mToken, who, requestCode, 5167 ar.getResultCode(), ar.getResultData()); 5168 } 5169 cancelInputsAndStartExitTransition(options); 5170 } 5171 5172 /** 5173 * @hide 5174 */ 5175 @Override 5176 public boolean canStartActivityForResult() { 5177 return true; 5178 } 5179 5180 /** 5181 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 5182 * int, Intent, int, int, int, Bundle)} with no options. 5183 */ 5184 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5185 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5186 int extraFlags) 5187 throws IntentSender.SendIntentException { 5188 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 5189 flagsMask, flagsValues, extraFlags, null); 5190 } 5191 5192 /** 5193 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 5194 * taking a IntentSender; see 5195 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5196 * for more information. 5197 */ 5198 public void startIntentSenderFromChild(Activity child, IntentSender intent, 5199 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5200 int extraFlags, @Nullable Bundle options) 5201 throws IntentSender.SendIntentException { 5202 startIntentSenderForResultInner(intent, child.mEmbeddedID, requestCode, fillInIntent, 5203 flagsMask, flagsValues, options); 5204 } 5205 5206 /** 5207 * Like {@link #startIntentSenderFromChild}, but taking a Fragment; see 5208 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 5209 * for more information. 5210 * 5211 * @hide 5212 */ 5213 public void startIntentSenderFromChildFragment(Fragment child, IntentSender intent, 5214 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 5215 int extraFlags, @Nullable Bundle options) 5216 throws IntentSender.SendIntentException { 5217 startIntentSenderForResultInner(intent, child.mWho, requestCode, fillInIntent, 5218 flagsMask, flagsValues, options); 5219 } 5220 5221 /** 5222 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 5223 * or {@link #finish} to specify an explicit transition animation to 5224 * perform next. 5225 * 5226 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 5227 * to using this with starting activities is to supply the desired animation 5228 * information through a {@link ActivityOptions} bundle to 5229 * {@link #startActivity(Intent, Bundle)} or a related function. This allows 5230 * you to specify a custom animation even when starting an activity from 5231 * outside the context of the current top activity. 5232 * 5233 * @param enterAnim A resource ID of the animation resource to use for 5234 * the incoming activity. Use 0 for no animation. 5235 * @param exitAnim A resource ID of the animation resource to use for 5236 * the outgoing activity. Use 0 for no animation. 5237 */ 5238 public void overridePendingTransition(int enterAnim, int exitAnim) { 5239 try { 5240 ActivityManager.getService().overridePendingTransition( 5241 mToken, getPackageName(), enterAnim, exitAnim); 5242 } catch (RemoteException e) { 5243 } 5244 } 5245 5246 /** 5247 * Call this to set the result that your activity will return to its 5248 * caller. 5249 * 5250 * @param resultCode The result code to propagate back to the originating 5251 * activity, often RESULT_CANCELED or RESULT_OK 5252 * 5253 * @see #RESULT_CANCELED 5254 * @see #RESULT_OK 5255 * @see #RESULT_FIRST_USER 5256 * @see #setResult(int, Intent) 5257 */ 5258 public final void setResult(int resultCode) { 5259 synchronized (this) { 5260 mResultCode = resultCode; 5261 mResultData = null; 5262 } 5263 } 5264 5265 /** 5266 * Call this to set the result that your activity will return to its 5267 * caller. 5268 * 5269 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 5270 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 5271 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 5272 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 5273 * Activity receiving the result access to the specific URIs in the Intent. 5274 * Access will remain until the Activity has finished (it will remain across the hosting 5275 * process being killed and other temporary destruction) and will be added 5276 * to any existing set of URI permissions it already holds. 5277 * 5278 * @param resultCode The result code to propagate back to the originating 5279 * activity, often RESULT_CANCELED or RESULT_OK 5280 * @param data The data to propagate back to the originating activity. 5281 * 5282 * @see #RESULT_CANCELED 5283 * @see #RESULT_OK 5284 * @see #RESULT_FIRST_USER 5285 * @see #setResult(int) 5286 */ 5287 public final void setResult(int resultCode, Intent data) { 5288 synchronized (this) { 5289 mResultCode = resultCode; 5290 mResultData = data; 5291 } 5292 } 5293 5294 /** 5295 * Return information about who launched this activity. If the launching Intent 5296 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 5297 * that will be returned as-is; otherwise, if known, an 5298 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 5299 * package name that started the Intent will be returned. This may return null if no 5300 * referrer can be identified -- it is neither explicitly specified, nor is it known which 5301 * application package was involved. 5302 * 5303 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 5304 * return the referrer that submitted that new intent to the activity. Otherwise, it 5305 * always returns the referrer of the original Intent.</p> 5306 * 5307 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 5308 * referrer information, applications can spoof it.</p> 5309 */ 5310 @Nullable 5311 public Uri getReferrer() { 5312 Intent intent = getIntent(); 5313 try { 5314 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 5315 if (referrer != null) { 5316 return referrer; 5317 } 5318 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 5319 if (referrerName != null) { 5320 return Uri.parse(referrerName); 5321 } 5322 } catch (BadParcelableException e) { 5323 Log.w(TAG, "Cannot read referrer from intent;" 5324 + " intent extras contain unknown custom Parcelable objects"); 5325 } 5326 if (mReferrer != null) { 5327 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 5328 } 5329 return null; 5330 } 5331 5332 /** 5333 * Override to generate the desired referrer for the content currently being shown 5334 * by the app. The default implementation returns null, meaning the referrer will simply 5335 * be the android-app: of the package name of this activity. Return a non-null Uri to 5336 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 5337 */ 5338 public Uri onProvideReferrer() { 5339 return null; 5340 } 5341 5342 /** 5343 * Return the name of the package that invoked this activity. This is who 5344 * the data in {@link #setResult setResult()} will be sent to. You can 5345 * use this information to validate that the recipient is allowed to 5346 * receive the data. 5347 * 5348 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5349 * did not use the {@link #startActivityForResult} 5350 * form that includes a request code), then the calling package will be 5351 * null.</p> 5352 * 5353 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 5354 * the result from this method was unstable. If the process hosting the calling 5355 * package was no longer running, it would return null instead of the proper package 5356 * name. You can use {@link #getCallingActivity()} and retrieve the package name 5357 * from that instead.</p> 5358 * 5359 * @return The package of the activity that will receive your 5360 * reply, or null if none. 5361 */ 5362 @Nullable 5363 public String getCallingPackage() { 5364 try { 5365 return ActivityManager.getService().getCallingPackage(mToken); 5366 } catch (RemoteException e) { 5367 return null; 5368 } 5369 } 5370 5371 /** 5372 * Return the name of the activity that invoked this activity. This is 5373 * who the data in {@link #setResult setResult()} will be sent to. You 5374 * can use this information to validate that the recipient is allowed to 5375 * receive the data. 5376 * 5377 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5378 * did not use the {@link #startActivityForResult} 5379 * form that includes a request code), then the calling package will be 5380 * null. 5381 * 5382 * @return The ComponentName of the activity that will receive your 5383 * reply, or null if none. 5384 */ 5385 @Nullable 5386 public ComponentName getCallingActivity() { 5387 try { 5388 return ActivityManager.getService().getCallingActivity(mToken); 5389 } catch (RemoteException e) { 5390 return null; 5391 } 5392 } 5393 5394 /** 5395 * Control whether this activity's main window is visible. This is intended 5396 * only for the special case of an activity that is not going to show a 5397 * UI itself, but can't just finish prior to onResume() because it needs 5398 * to wait for a service binding or such. Setting this to false allows 5399 * you to prevent your UI from being shown during that time. 5400 * 5401 * <p>The default value for this is taken from the 5402 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5403 */ 5404 public void setVisible(boolean visible) { 5405 if (mVisibleFromClient != visible) { 5406 mVisibleFromClient = visible; 5407 if (mVisibleFromServer) { 5408 if (visible) makeVisible(); 5409 else mDecor.setVisibility(View.INVISIBLE); 5410 } 5411 } 5412 } 5413 5414 void makeVisible() { 5415 if (!mWindowAdded) { 5416 ViewManager wm = getWindowManager(); 5417 wm.addView(mDecor, getWindow().getAttributes()); 5418 mWindowAdded = true; 5419 } 5420 mDecor.setVisibility(View.VISIBLE); 5421 } 5422 5423 /** 5424 * Check to see whether this activity is in the process of finishing, 5425 * either because you called {@link #finish} on it or someone else 5426 * has requested that it finished. This is often used in 5427 * {@link #onPause} to determine whether the activity is simply pausing or 5428 * completely finishing. 5429 * 5430 * @return If the activity is finishing, returns true; else returns false. 5431 * 5432 * @see #finish 5433 */ 5434 public boolean isFinishing() { 5435 return mFinished; 5436 } 5437 5438 /** 5439 * Returns true if the final {@link #onDestroy()} call has been made 5440 * on the Activity, so this instance is now dead. 5441 */ 5442 public boolean isDestroyed() { 5443 return mDestroyed; 5444 } 5445 5446 /** 5447 * Check to see whether this activity is in the process of being destroyed in order to be 5448 * recreated with a new configuration. This is often used in 5449 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5450 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5451 * 5452 * @return If the activity is being torn down in order to be recreated with a new configuration, 5453 * returns true; else returns false. 5454 */ 5455 public boolean isChangingConfigurations() { 5456 return mChangingConfigurations; 5457 } 5458 5459 /** 5460 * Cause this Activity to be recreated with a new instance. This results 5461 * in essentially the same flow as when the Activity is created due to 5462 * a configuration change -- the current instance will go through its 5463 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5464 */ 5465 public void recreate() { 5466 if (mParent != null) { 5467 throw new IllegalStateException("Can only be called on top-level activity"); 5468 } 5469 if (Looper.myLooper() != mMainThread.getLooper()) { 5470 throw new IllegalStateException("Must be called from main thread"); 5471 } 5472 try { 5473 ActivityManager.getService().requestActivityRelaunch(mToken); 5474 } catch (RemoteException e) { 5475 } 5476 } 5477 5478 /** 5479 * Finishes the current activity and specifies whether to remove the task associated with this 5480 * activity. 5481 */ 5482 private void finish(int finishTask) { 5483 if (mParent == null) { 5484 int resultCode; 5485 Intent resultData; 5486 synchronized (this) { 5487 resultCode = mResultCode; 5488 resultData = mResultData; 5489 } 5490 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5491 try { 5492 if (resultData != null) { 5493 resultData.prepareToLeaveProcess(this); 5494 } 5495 if (ActivityManager.getService() 5496 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5497 mFinished = true; 5498 } 5499 } catch (RemoteException e) { 5500 // Empty 5501 } 5502 } else { 5503 mParent.finishFromChild(this); 5504 } 5505 5506 // Activity was launched when user tapped a link in the Autofill Save UI - Save UI must 5507 // be restored now. 5508 if (mIntent != null && mIntent.hasExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)) { 5509 getAutofillManager().onPendingSaveUi(AutofillManager.PENDING_UI_OPERATION_RESTORE, 5510 mIntent.getIBinderExtra(AutofillManager.EXTRA_RESTORE_SESSION_TOKEN)); 5511 } 5512 } 5513 5514 /** 5515 * Call this when your activity is done and should be closed. The 5516 * ActivityResult is propagated back to whoever launched you via 5517 * onActivityResult(). 5518 */ 5519 public void finish() { 5520 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5521 } 5522 5523 /** 5524 * Finish this activity as well as all activities immediately below it 5525 * in the current task that have the same affinity. This is typically 5526 * used when an application can be launched on to another task (such as 5527 * from an ACTION_VIEW of a content type it understands) and the user 5528 * has used the up navigation to switch out of the current task and in 5529 * to its own task. In this case, if the user has navigated down into 5530 * any other activities of the second application, all of those should 5531 * be removed from the original task as part of the task switch. 5532 * 5533 * <p>Note that this finish does <em>not</em> allow you to deliver results 5534 * to the previous activity, and an exception will be thrown if you are trying 5535 * to do so.</p> 5536 */ 5537 public void finishAffinity() { 5538 if (mParent != null) { 5539 throw new IllegalStateException("Can not be called from an embedded activity"); 5540 } 5541 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5542 throw new IllegalStateException("Can not be called to deliver a result"); 5543 } 5544 try { 5545 if (ActivityManager.getService().finishActivityAffinity(mToken)) { 5546 mFinished = true; 5547 } 5548 } catch (RemoteException e) { 5549 // Empty 5550 } 5551 } 5552 5553 /** 5554 * This is called when a child activity of this one calls its 5555 * {@link #finish} method. The default implementation simply calls 5556 * finish() on this activity (the parent), finishing the entire group. 5557 * 5558 * @param child The activity making the call. 5559 * 5560 * @see #finish 5561 */ 5562 public void finishFromChild(Activity child) { 5563 finish(); 5564 } 5565 5566 /** 5567 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5568 * to reverse its exit Transition. When the exit Transition completes, 5569 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5570 * immediately and the Activity exit Transition is run. 5571 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5572 */ 5573 public void finishAfterTransition() { 5574 if (!mActivityTransitionState.startExitBackTransition(this)) { 5575 finish(); 5576 } 5577 } 5578 5579 /** 5580 * Force finish another activity that you had previously started with 5581 * {@link #startActivityForResult}. 5582 * 5583 * @param requestCode The request code of the activity that you had 5584 * given to startActivityForResult(). If there are multiple 5585 * activities started with this request code, they 5586 * will all be finished. 5587 */ 5588 public void finishActivity(int requestCode) { 5589 if (mParent == null) { 5590 try { 5591 ActivityManager.getService() 5592 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5593 } catch (RemoteException e) { 5594 // Empty 5595 } 5596 } else { 5597 mParent.finishActivityFromChild(this, requestCode); 5598 } 5599 } 5600 5601 /** 5602 * This is called when a child activity of this one calls its 5603 * finishActivity(). 5604 * 5605 * @param child The activity making the call. 5606 * @param requestCode Request code that had been used to start the 5607 * activity. 5608 */ 5609 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5610 try { 5611 ActivityManager.getService() 5612 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5613 } catch (RemoteException e) { 5614 // Empty 5615 } 5616 } 5617 5618 /** 5619 * Call this when your activity is done and should be closed and the task should be completely 5620 * removed as a part of finishing the root activity of the task. 5621 */ 5622 public void finishAndRemoveTask() { 5623 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5624 } 5625 5626 /** 5627 * Ask that the local app instance of this activity be released to free up its memory. 5628 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5629 * a new instance of the activity will later be re-created if needed due to the user 5630 * navigating back to it. 5631 * 5632 * @return Returns true if the activity was in a state that it has started the process 5633 * of destroying its current instance; returns false if for any reason this could not 5634 * be done: it is currently visible to the user, it is already being destroyed, it is 5635 * being finished, it hasn't yet saved its state, etc. 5636 */ 5637 public boolean releaseInstance() { 5638 try { 5639 return ActivityManager.getService().releaseActivityInstance(mToken); 5640 } catch (RemoteException e) { 5641 // Empty 5642 } 5643 return false; 5644 } 5645 5646 /** 5647 * Called when an activity you launched exits, giving you the requestCode 5648 * you started it with, the resultCode it returned, and any additional 5649 * data from it. The <var>resultCode</var> will be 5650 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5651 * didn't return any result, or crashed during its operation. 5652 * 5653 * <p>You will receive this call immediately before onResume() when your 5654 * activity is re-starting. 5655 * 5656 * <p>This method is never invoked if your activity sets 5657 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5658 * <code>true</code>. 5659 * 5660 * @param requestCode The integer request code originally supplied to 5661 * startActivityForResult(), allowing you to identify who this 5662 * result came from. 5663 * @param resultCode The integer result code returned by the child activity 5664 * through its setResult(). 5665 * @param data An Intent, which can return result data to the caller 5666 * (various data can be attached to Intent "extras"). 5667 * 5668 * @see #startActivityForResult 5669 * @see #createPendingResult 5670 * @see #setResult(int) 5671 */ 5672 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5673 } 5674 5675 /** 5676 * Called when an activity you launched with an activity transition exposes this 5677 * Activity through a returning activity transition, giving you the resultCode 5678 * and any additional data from it. This method will only be called if the activity 5679 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5680 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5681 * 5682 * <p>The purpose of this function is to let the called Activity send a hint about 5683 * its state so that this underlying Activity can prepare to be exposed. A call to 5684 * this method does not guarantee that the called Activity has or will be exiting soon. 5685 * It only indicates that it will expose this Activity's Window and it has 5686 * some data to pass to prepare it.</p> 5687 * 5688 * @param resultCode The integer result code returned by the child activity 5689 * through its setResult(). 5690 * @param data An Intent, which can return result data to the caller 5691 * (various data can be attached to Intent "extras"). 5692 */ 5693 public void onActivityReenter(int resultCode, Intent data) { 5694 } 5695 5696 /** 5697 * Create a new PendingIntent object which you can hand to others 5698 * for them to use to send result data back to your 5699 * {@link #onActivityResult} callback. The created object will be either 5700 * one-shot (becoming invalid after a result is sent back) or multiple 5701 * (allowing any number of results to be sent through it). 5702 * 5703 * @param requestCode Private request code for the sender that will be 5704 * associated with the result data when it is returned. The sender can not 5705 * modify this value, allowing you to identify incoming results. 5706 * @param data Default data to supply in the result, which may be modified 5707 * by the sender. 5708 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5709 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5710 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5711 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5712 * or any of the flags as supported by 5713 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5714 * of the intent that can be supplied when the actual send happens. 5715 * 5716 * @return Returns an existing or new PendingIntent matching the given 5717 * parameters. May return null only if 5718 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5719 * supplied. 5720 * 5721 * @see PendingIntent 5722 */ 5723 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5724 @PendingIntent.Flags int flags) { 5725 String packageName = getPackageName(); 5726 try { 5727 data.prepareToLeaveProcess(this); 5728 IIntentSender target = 5729 ActivityManager.getService().getIntentSender( 5730 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5731 mParent == null ? mToken : mParent.mToken, 5732 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5733 UserHandle.myUserId()); 5734 return target != null ? new PendingIntent(target) : null; 5735 } catch (RemoteException e) { 5736 // Empty 5737 } 5738 return null; 5739 } 5740 5741 /** 5742 * Change the desired orientation of this activity. If the activity 5743 * is currently in the foreground or otherwise impacting the screen 5744 * orientation, the screen will immediately be changed (possibly causing 5745 * the activity to be restarted). Otherwise, this will be used the next 5746 * time the activity is visible. 5747 * 5748 * @param requestedOrientation An orientation constant as used in 5749 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5750 */ 5751 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5752 if (mParent == null) { 5753 try { 5754 ActivityManager.getService().setRequestedOrientation( 5755 mToken, requestedOrientation); 5756 } catch (RemoteException e) { 5757 // Empty 5758 } 5759 } else { 5760 mParent.setRequestedOrientation(requestedOrientation); 5761 } 5762 } 5763 5764 /** 5765 * Return the current requested orientation of the activity. This will 5766 * either be the orientation requested in its component's manifest, or 5767 * the last requested orientation given to 5768 * {@link #setRequestedOrientation(int)}. 5769 * 5770 * @return Returns an orientation constant as used in 5771 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5772 */ 5773 @ActivityInfo.ScreenOrientation 5774 public int getRequestedOrientation() { 5775 if (mParent == null) { 5776 try { 5777 return ActivityManager.getService() 5778 .getRequestedOrientation(mToken); 5779 } catch (RemoteException e) { 5780 // Empty 5781 } 5782 } else { 5783 return mParent.getRequestedOrientation(); 5784 } 5785 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5786 } 5787 5788 /** 5789 * Return the identifier of the task this activity is in. This identifier 5790 * will remain the same for the lifetime of the activity. 5791 * 5792 * @return Task identifier, an opaque integer. 5793 */ 5794 public int getTaskId() { 5795 try { 5796 return ActivityManager.getService() 5797 .getTaskForActivity(mToken, false); 5798 } catch (RemoteException e) { 5799 return -1; 5800 } 5801 } 5802 5803 /** 5804 * Return whether this activity is the root of a task. The root is the 5805 * first activity in a task. 5806 * 5807 * @return True if this is the root activity, else false. 5808 */ 5809 @Override 5810 public boolean isTaskRoot() { 5811 try { 5812 return ActivityManager.getService().getTaskForActivity(mToken, true) >= 0; 5813 } catch (RemoteException e) { 5814 return false; 5815 } 5816 } 5817 5818 /** 5819 * Move the task containing this activity to the back of the activity 5820 * stack. The activity's order within the task is unchanged. 5821 * 5822 * @param nonRoot If false then this only works if the activity is the root 5823 * of a task; if true it will work for any activity in 5824 * a task. 5825 * 5826 * @return If the task was moved (or it was already at the 5827 * back) true is returned, else false. 5828 */ 5829 public boolean moveTaskToBack(boolean nonRoot) { 5830 try { 5831 return ActivityManager.getService().moveActivityTaskToBack( 5832 mToken, nonRoot); 5833 } catch (RemoteException e) { 5834 // Empty 5835 } 5836 return false; 5837 } 5838 5839 /** 5840 * Returns class name for this activity with the package prefix removed. 5841 * This is the default name used to read and write settings. 5842 * 5843 * @return The local class name. 5844 */ 5845 @NonNull 5846 public String getLocalClassName() { 5847 final String pkg = getPackageName(); 5848 final String cls = mComponent.getClassName(); 5849 int packageLen = pkg.length(); 5850 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5851 || cls.charAt(packageLen) != '.') { 5852 return cls; 5853 } 5854 return cls.substring(packageLen+1); 5855 } 5856 5857 /** 5858 * Returns the complete component name of this activity. 5859 * 5860 * @return Returns the complete component name for this activity 5861 */ 5862 @Override 5863 public ComponentName getComponentName() 5864 { 5865 return mComponent; 5866 } 5867 5868 /** 5869 * Retrieve a {@link SharedPreferences} object for accessing preferences 5870 * that are private to this activity. This simply calls the underlying 5871 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5872 * class name as the preferences name. 5873 * 5874 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5875 * operation. 5876 * 5877 * @return Returns the single SharedPreferences instance that can be used 5878 * to retrieve and modify the preference values. 5879 */ 5880 public SharedPreferences getPreferences(@Context.PreferencesMode int mode) { 5881 return getSharedPreferences(getLocalClassName(), mode); 5882 } 5883 5884 private void ensureSearchManager() { 5885 if (mSearchManager != null) { 5886 return; 5887 } 5888 5889 try { 5890 mSearchManager = new SearchManager(this, null); 5891 } catch (ServiceNotFoundException e) { 5892 throw new IllegalStateException(e); 5893 } 5894 } 5895 5896 @Override 5897 public Object getSystemService(@ServiceName @NonNull String name) { 5898 if (getBaseContext() == null) { 5899 throw new IllegalStateException( 5900 "System services not available to Activities before onCreate()"); 5901 } 5902 5903 if (WINDOW_SERVICE.equals(name)) { 5904 return mWindowManager; 5905 } else if (SEARCH_SERVICE.equals(name)) { 5906 ensureSearchManager(); 5907 return mSearchManager; 5908 } 5909 return super.getSystemService(name); 5910 } 5911 5912 /** 5913 * Change the title associated with this activity. If this is a 5914 * top-level activity, the title for its window will change. If it 5915 * is an embedded activity, the parent can do whatever it wants 5916 * with it. 5917 */ 5918 public void setTitle(CharSequence title) { 5919 mTitle = title; 5920 onTitleChanged(title, mTitleColor); 5921 5922 if (mParent != null) { 5923 mParent.onChildTitleChanged(this, title); 5924 } 5925 } 5926 5927 /** 5928 * Change the title associated with this activity. If this is a 5929 * top-level activity, the title for its window will change. If it 5930 * is an embedded activity, the parent can do whatever it wants 5931 * with it. 5932 */ 5933 public void setTitle(int titleId) { 5934 setTitle(getText(titleId)); 5935 } 5936 5937 /** 5938 * Change the color of the title associated with this activity. 5939 * <p> 5940 * This method is deprecated starting in API Level 11 and replaced by action 5941 * bar styles. For information on styling the Action Bar, read the <a 5942 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5943 * guide. 5944 * 5945 * @deprecated Use action bar styles instead. 5946 */ 5947 @Deprecated 5948 public void setTitleColor(int textColor) { 5949 mTitleColor = textColor; 5950 onTitleChanged(mTitle, textColor); 5951 } 5952 5953 public final CharSequence getTitle() { 5954 return mTitle; 5955 } 5956 5957 public final int getTitleColor() { 5958 return mTitleColor; 5959 } 5960 5961 protected void onTitleChanged(CharSequence title, int color) { 5962 if (mTitleReady) { 5963 final Window win = getWindow(); 5964 if (win != null) { 5965 win.setTitle(title); 5966 if (color != 0) { 5967 win.setTitleColor(color); 5968 } 5969 } 5970 if (mActionBar != null) { 5971 mActionBar.setWindowTitle(title); 5972 } 5973 } 5974 } 5975 5976 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5977 } 5978 5979 /** 5980 * Sets information describing the task with this activity for presentation inside the Recents 5981 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5982 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5983 * for each property until a suitable value is found. For each task the taskDescription will be 5984 * returned in {@link android.app.ActivityManager.TaskDescription}. 5985 * 5986 * @see ActivityManager#getRecentTasks 5987 * @see android.app.ActivityManager.TaskDescription 5988 * 5989 * @param taskDescription The TaskDescription properties that describe the task with this activity 5990 */ 5991 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5992 if (mTaskDescription != taskDescription) { 5993 mTaskDescription.copyFromPreserveHiddenFields(taskDescription); 5994 // Scale the icon down to something reasonable if it is provided 5995 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 5996 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5997 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, 5998 true); 5999 mTaskDescription.setIcon(icon); 6000 } 6001 } 6002 try { 6003 ActivityManager.getService().setTaskDescription(mToken, mTaskDescription); 6004 } catch (RemoteException e) { 6005 } 6006 } 6007 6008 /** 6009 * Sets the visibility of the progress bar in the title. 6010 * <p> 6011 * In order for the progress bar to be shown, the feature must be requested 6012 * via {@link #requestWindowFeature(int)}. 6013 * 6014 * @param visible Whether to show the progress bars in the title. 6015 * @deprecated No longer supported starting in API 21. 6016 */ 6017 @Deprecated 6018 public final void setProgressBarVisibility(boolean visible) { 6019 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 6020 Window.PROGRESS_VISIBILITY_OFF); 6021 } 6022 6023 /** 6024 * Sets the visibility of the indeterminate progress bar in the title. 6025 * <p> 6026 * In order for the progress bar to be shown, the feature must be requested 6027 * via {@link #requestWindowFeature(int)}. 6028 * 6029 * @param visible Whether to show the progress bars in the title. 6030 * @deprecated No longer supported starting in API 21. 6031 */ 6032 @Deprecated 6033 public final void setProgressBarIndeterminateVisibility(boolean visible) { 6034 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 6035 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 6036 } 6037 6038 /** 6039 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 6040 * is always indeterminate). 6041 * <p> 6042 * In order for the progress bar to be shown, the feature must be requested 6043 * via {@link #requestWindowFeature(int)}. 6044 * 6045 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 6046 * @deprecated No longer supported starting in API 21. 6047 */ 6048 @Deprecated 6049 public final void setProgressBarIndeterminate(boolean indeterminate) { 6050 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6051 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 6052 : Window.PROGRESS_INDETERMINATE_OFF); 6053 } 6054 6055 /** 6056 * Sets the progress for the progress bars in the title. 6057 * <p> 6058 * In order for the progress bar to be shown, the feature must be requested 6059 * via {@link #requestWindowFeature(int)}. 6060 * 6061 * @param progress The progress for the progress bar. Valid ranges are from 6062 * 0 to 10000 (both inclusive). If 10000 is given, the progress 6063 * bar will be completely filled and will fade out. 6064 * @deprecated No longer supported starting in API 21. 6065 */ 6066 @Deprecated 6067 public final void setProgress(int progress) { 6068 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 6069 } 6070 6071 /** 6072 * Sets the secondary progress for the progress bar in the title. This 6073 * progress is drawn between the primary progress (set via 6074 * {@link #setProgress(int)} and the background. It can be ideal for media 6075 * scenarios such as showing the buffering progress while the default 6076 * progress shows the play progress. 6077 * <p> 6078 * In order for the progress bar to be shown, the feature must be requested 6079 * via {@link #requestWindowFeature(int)}. 6080 * 6081 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 6082 * 0 to 10000 (both inclusive). 6083 * @deprecated No longer supported starting in API 21. 6084 */ 6085 @Deprecated 6086 public final void setSecondaryProgress(int secondaryProgress) { 6087 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 6088 secondaryProgress + Window.PROGRESS_SECONDARY_START); 6089 } 6090 6091 /** 6092 * Suggests an audio stream whose volume should be changed by the hardware 6093 * volume controls. 6094 * <p> 6095 * The suggested audio stream will be tied to the window of this Activity. 6096 * Volume requests which are received while the Activity is in the 6097 * foreground will affect this stream. 6098 * <p> 6099 * It is not guaranteed that the hardware volume controls will always change 6100 * this stream's volume (for example, if a call is in progress, its stream's 6101 * volume may be changed instead). To reset back to the default, use 6102 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 6103 * 6104 * @param streamType The type of the audio stream whose volume should be 6105 * changed by the hardware volume controls. 6106 */ 6107 public final void setVolumeControlStream(int streamType) { 6108 getWindow().setVolumeControlStream(streamType); 6109 } 6110 6111 /** 6112 * Gets the suggested audio stream whose volume should be changed by the 6113 * hardware volume controls. 6114 * 6115 * @return The suggested audio stream type whose volume should be changed by 6116 * the hardware volume controls. 6117 * @see #setVolumeControlStream(int) 6118 */ 6119 public final int getVolumeControlStream() { 6120 return getWindow().getVolumeControlStream(); 6121 } 6122 6123 /** 6124 * Sets a {@link MediaController} to send media keys and volume changes to. 6125 * <p> 6126 * The controller will be tied to the window of this Activity. Media key and 6127 * volume events which are received while the Activity is in the foreground 6128 * will be forwarded to the controller and used to invoke transport controls 6129 * or adjust the volume. This may be used instead of or in addition to 6130 * {@link #setVolumeControlStream} to affect a specific session instead of a 6131 * specific stream. 6132 * <p> 6133 * It is not guaranteed that the hardware volume controls will always change 6134 * this session's volume (for example, if a call is in progress, its 6135 * stream's volume may be changed instead). To reset back to the default use 6136 * null as the controller. 6137 * 6138 * @param controller The controller for the session which should receive 6139 * media keys and volume changes. 6140 */ 6141 public final void setMediaController(MediaController controller) { 6142 getWindow().setMediaController(controller); 6143 } 6144 6145 /** 6146 * Gets the controller which should be receiving media key and volume events 6147 * while this activity is in the foreground. 6148 * 6149 * @return The controller which should receive events. 6150 * @see #setMediaController(android.media.session.MediaController) 6151 */ 6152 public final MediaController getMediaController() { 6153 return getWindow().getMediaController(); 6154 } 6155 6156 /** 6157 * Runs the specified action on the UI thread. If the current thread is the UI 6158 * thread, then the action is executed immediately. If the current thread is 6159 * not the UI thread, the action is posted to the event queue of the UI thread. 6160 * 6161 * @param action the action to run on the UI thread 6162 */ 6163 @Override 6164 public final void runOnUiThread(Runnable action) { 6165 if (Thread.currentThread() != mUiThread) { 6166 mHandler.post(action); 6167 } else { 6168 action.run(); 6169 } 6170 } 6171 6172 /** 6173 * Standard implementation of 6174 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 6175 * inflating with the LayoutInflater returned by {@link #getSystemService}. 6176 * This implementation does nothing and is for 6177 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 6178 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 6179 * 6180 * @see android.view.LayoutInflater#createView 6181 * @see android.view.Window#getLayoutInflater 6182 */ 6183 @Nullable 6184 public View onCreateView(String name, Context context, AttributeSet attrs) { 6185 return null; 6186 } 6187 6188 /** 6189 * Standard implementation of 6190 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 6191 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 6192 * This implementation handles <fragment> tags to embed fragments inside 6193 * of the activity. 6194 * 6195 * @see android.view.LayoutInflater#createView 6196 * @see android.view.Window#getLayoutInflater 6197 */ 6198 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 6199 if (!"fragment".equals(name)) { 6200 return onCreateView(name, context, attrs); 6201 } 6202 6203 return mFragments.onCreateView(parent, name, context, attrs); 6204 } 6205 6206 /** 6207 * Print the Activity's state into the given stream. This gets invoked if 6208 * you run "adb shell dumpsys activity <activity_component_name>". 6209 * 6210 * @param prefix Desired prefix to prepend at each line of output. 6211 * @param fd The raw file descriptor that the dump is being sent to. 6212 * @param writer The PrintWriter to which you should dump your state. This will be 6213 * closed for you after you return. 6214 * @param args additional arguments to the dump request. 6215 */ 6216 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6217 dumpInner(prefix, fd, writer, args); 6218 } 6219 6220 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6221 writer.print(prefix); writer.print("Local Activity "); 6222 writer.print(Integer.toHexString(System.identityHashCode(this))); 6223 writer.println(" State:"); 6224 String innerPrefix = prefix + " "; 6225 writer.print(innerPrefix); writer.print("mResumed="); 6226 writer.print(mResumed); writer.print(" mStopped="); 6227 writer.print(mStopped); writer.print(" mFinished="); 6228 writer.println(mFinished); 6229 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 6230 writer.println(mChangingConfigurations); 6231 writer.print(innerPrefix); writer.print("mCurrentConfig="); 6232 writer.println(mCurrentConfig); 6233 6234 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 6235 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 6236 if (mVoiceInteractor != null) { 6237 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 6238 } 6239 6240 if (getWindow() != null && 6241 getWindow().peekDecorView() != null && 6242 getWindow().peekDecorView().getViewRootImpl() != null) { 6243 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 6244 } 6245 6246 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 6247 6248 final AutofillManager afm = getAutofillManager(); 6249 if (afm != null) { 6250 afm.dump(prefix, writer); 6251 } else { 6252 writer.print(prefix); writer.println("No AutofillManager"); 6253 } 6254 } 6255 6256 /** 6257 * Bit indicating that this activity is "immersive" and should not be 6258 * interrupted by notifications if possible. 6259 * 6260 * This value is initially set by the manifest property 6261 * <code>android:immersive</code> but may be changed at runtime by 6262 * {@link #setImmersive}. 6263 * 6264 * @see #setImmersive(boolean) 6265 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6266 */ 6267 public boolean isImmersive() { 6268 try { 6269 return ActivityManager.getService().isImmersive(mToken); 6270 } catch (RemoteException e) { 6271 return false; 6272 } 6273 } 6274 6275 /** 6276 * Indication of whether this is the highest level activity in this task. Can be used to 6277 * determine whether an activity launched by this activity was placed in the same task or 6278 * another task. 6279 * 6280 * @return true if this is the topmost, non-finishing activity in its task. 6281 */ 6282 private boolean isTopOfTask() { 6283 if (mToken == null || mWindow == null) { 6284 return false; 6285 } 6286 try { 6287 return ActivityManager.getService().isTopOfTask(getActivityToken()); 6288 } catch (RemoteException e) { 6289 return false; 6290 } 6291 } 6292 6293 /** 6294 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 6295 * fullscreen opaque Activity. 6296 * <p> 6297 * Call this whenever the background of a translucent Activity has changed to become opaque. 6298 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 6299 * <p> 6300 * This call has no effect on non-translucent activities or on activities with the 6301 * {@link android.R.attr#windowIsFloating} attribute. 6302 * 6303 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6304 * ActivityOptions) 6305 * @see TranslucentConversionListener 6306 * 6307 * @hide 6308 */ 6309 @SystemApi 6310 public void convertFromTranslucent() { 6311 try { 6312 mTranslucentCallback = null; 6313 if (ActivityManager.getService().convertFromTranslucent(mToken)) { 6314 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 6315 } 6316 } catch (RemoteException e) { 6317 // pass 6318 } 6319 } 6320 6321 /** 6322 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 6323 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 6324 * <p> 6325 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 6326 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 6327 * be called indicating that it is safe to make this activity translucent again. Until 6328 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 6329 * behind the frontmost Activity will be indeterminate. 6330 * <p> 6331 * This call has no effect on non-translucent activities or on activities with the 6332 * {@link android.R.attr#windowIsFloating} attribute. 6333 * 6334 * @param callback the method to call when all visible Activities behind this one have been 6335 * drawn and it is safe to make this Activity translucent again. 6336 * @param options activity options delivered to the activity below this one. The options 6337 * are retrieved using {@link #getActivityOptions}. 6338 * @return <code>true</code> if Window was opaque and will become translucent or 6339 * <code>false</code> if window was translucent and no change needed to be made. 6340 * 6341 * @see #convertFromTranslucent() 6342 * @see TranslucentConversionListener 6343 * 6344 * @hide 6345 */ 6346 @SystemApi 6347 public boolean convertToTranslucent(TranslucentConversionListener callback, 6348 ActivityOptions options) { 6349 boolean drawComplete; 6350 try { 6351 mTranslucentCallback = callback; 6352 mChangeCanvasToTranslucent = ActivityManager.getService().convertToTranslucent( 6353 mToken, options == null ? null : options.toBundle()); 6354 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6355 drawComplete = true; 6356 } catch (RemoteException e) { 6357 // Make callback return as though it timed out. 6358 mChangeCanvasToTranslucent = false; 6359 drawComplete = false; 6360 } 6361 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 6362 // Window is already translucent. 6363 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6364 } 6365 return mChangeCanvasToTranslucent; 6366 } 6367 6368 /** @hide */ 6369 void onTranslucentConversionComplete(boolean drawComplete) { 6370 if (mTranslucentCallback != null) { 6371 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6372 mTranslucentCallback = null; 6373 } 6374 if (mChangeCanvasToTranslucent) { 6375 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6376 } 6377 } 6378 6379 /** @hide */ 6380 public void onNewActivityOptions(ActivityOptions options) { 6381 mActivityTransitionState.setEnterActivityOptions(this, options); 6382 if (!mStopped) { 6383 mActivityTransitionState.enterReady(this); 6384 } 6385 } 6386 6387 /** 6388 * Retrieve the ActivityOptions passed in from the launching activity or passed back 6389 * from an activity launched by this activity in its call to {@link 6390 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 6391 * 6392 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6393 * @hide 6394 */ 6395 ActivityOptions getActivityOptions() { 6396 try { 6397 return ActivityOptions.fromBundle( 6398 ActivityManager.getService().getActivityOptions(mToken)); 6399 } catch (RemoteException e) { 6400 } 6401 return null; 6402 } 6403 6404 /** 6405 * Activities that want to remain visible behind a translucent activity above them must call 6406 * this method anytime between the start of {@link #onResume()} and the return from 6407 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6408 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6409 * 6410 * <p>The actions of this call are reset each time that this activity is brought to the 6411 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6412 * to not have requested visible behind. Therefore, if you want this activity to continue to 6413 * be visible in the background you must call this method again. 6414 * 6415 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6416 * for dialog and translucent activities. 6417 * 6418 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6419 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6420 * 6421 * <p>False will be returned any time this method is called between the return of onPause and 6422 * the next call to onResume. 6423 * 6424 * @deprecated This method's functionality is no longer supported as of 6425 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6426 * 6427 * @param visible true to notify the system that the activity wishes to be visible behind other 6428 * translucent activities, false to indicate otherwise. Resources must be 6429 * released when passing false to this method. 6430 * 6431 * @return the resulting visibiity state. If true the activity will remain visible beyond 6432 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6433 * then the activity may not count on being visible behind other translucent activities, 6434 * and must stop any media playback and release resources. 6435 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6436 * the return value must be checked. 6437 * 6438 * @see #onVisibleBehindCanceled() 6439 */ 6440 @Deprecated 6441 public boolean requestVisibleBehind(boolean visible) { 6442 return false; 6443 } 6444 6445 /** 6446 * Called when a translucent activity over this activity is becoming opaque or another 6447 * activity is being launched. Activities that override this method must call 6448 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6449 * 6450 * <p>When this method is called the activity has 500 msec to release any resources it may be 6451 * using while visible in the background. 6452 * If the activity has not returned from this method in 500 msec the system will destroy 6453 * the activity and kill the process in order to recover the resources for another 6454 * process. Otherwise {@link #onStop()} will be called following return. 6455 * 6456 * @see #requestVisibleBehind(boolean) 6457 * 6458 * @deprecated This method's functionality is no longer supported as of 6459 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6460 */ 6461 @Deprecated 6462 @CallSuper 6463 public void onVisibleBehindCanceled() { 6464 mCalled = true; 6465 } 6466 6467 /** 6468 * Translucent activities may call this to determine if there is an activity below them that 6469 * is currently set to be visible in the background. 6470 * 6471 * @deprecated This method's functionality is no longer supported as of 6472 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6473 * 6474 * @return true if an activity below is set to visible according to the most recent call to 6475 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6476 * 6477 * @see #requestVisibleBehind(boolean) 6478 * @see #onVisibleBehindCanceled() 6479 * @see #onBackgroundVisibleBehindChanged(boolean) 6480 * @hide 6481 */ 6482 @Deprecated 6483 @SystemApi 6484 public boolean isBackgroundVisibleBehind() { 6485 return false; 6486 } 6487 6488 /** 6489 * The topmost foreground activity will receive this call when the background visibility state 6490 * of the activity below it changes. 6491 * 6492 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6493 * due to a background activity finishing itself. 6494 * 6495 * @deprecated This method's functionality is no longer supported as of 6496 * {@link android.os.Build.VERSION_CODES#O} and will be removed in a future release. 6497 * 6498 * @param visible true if a background activity is visible, false otherwise. 6499 * 6500 * @see #requestVisibleBehind(boolean) 6501 * @see #onVisibleBehindCanceled() 6502 * @hide 6503 */ 6504 @Deprecated 6505 @SystemApi 6506 public void onBackgroundVisibleBehindChanged(boolean visible) { 6507 } 6508 6509 /** 6510 * Activities cannot draw during the period that their windows are animating in. In order 6511 * to know when it is safe to begin drawing they can override this method which will be 6512 * called when the entering animation has completed. 6513 */ 6514 public void onEnterAnimationComplete() { 6515 } 6516 6517 /** 6518 * @hide 6519 */ 6520 public void dispatchEnterAnimationComplete() { 6521 onEnterAnimationComplete(); 6522 if (getWindow() != null && getWindow().getDecorView() != null) { 6523 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6524 } 6525 } 6526 6527 /** 6528 * Adjust the current immersive mode setting. 6529 * 6530 * Note that changing this value will have no effect on the activity's 6531 * {@link android.content.pm.ActivityInfo} structure; that is, if 6532 * <code>android:immersive</code> is set to <code>true</code> 6533 * in the application's manifest entry for this activity, the {@link 6534 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6535 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6536 * FLAG_IMMERSIVE} bit set. 6537 * 6538 * @see #isImmersive() 6539 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6540 */ 6541 public void setImmersive(boolean i) { 6542 try { 6543 ActivityManager.getService().setImmersive(mToken, i); 6544 } catch (RemoteException e) { 6545 // pass 6546 } 6547 } 6548 6549 /** 6550 * Enable or disable virtual reality (VR) mode for this Activity. 6551 * 6552 * <p>VR mode is a hint to Android system to switch to a mode optimized for VR applications 6553 * while this Activity has user focus.</p> 6554 * 6555 * <p>It is recommended that applications additionally declare 6556 * {@link android.R.attr#enableVrMode} in their manifest to allow for smooth activity 6557 * transitions when switching between VR activities.</p> 6558 * 6559 * <p>If the requested {@link android.service.vr.VrListenerService} component is not available, 6560 * VR mode will not be started. Developers can handle this case as follows:</p> 6561 * 6562 * <pre> 6563 * String servicePackage = "com.whatever.app"; 6564 * String serviceClass = "com.whatever.app.MyVrListenerService"; 6565 * 6566 * // Name of the component of the VrListenerService to start. 6567 * ComponentName serviceComponent = new ComponentName(servicePackage, serviceClass); 6568 * 6569 * try { 6570 * setVrModeEnabled(true, myComponentName); 6571 * } catch (PackageManager.NameNotFoundException e) { 6572 * List<ApplicationInfo> installed = getPackageManager().getInstalledApplications(0); 6573 * boolean isInstalled = false; 6574 * for (ApplicationInfo app : installed) { 6575 * if (app.packageName.equals(servicePackage)) { 6576 * isInstalled = true; 6577 * break; 6578 * } 6579 * } 6580 * if (isInstalled) { 6581 * // Package is installed, but not enabled in Settings. Let user enable it. 6582 * startActivity(new Intent(Settings.ACTION_VR_LISTENER_SETTINGS)); 6583 * } else { 6584 * // Package is not installed. Send an intent to download this. 6585 * sentIntentToLaunchAppStore(servicePackage); 6586 * } 6587 * } 6588 * </pre> 6589 * 6590 * @param enabled {@code true} to enable this mode. 6591 * @param requestedComponent the name of the component to use as a 6592 * {@link android.service.vr.VrListenerService} while VR mode is enabled. 6593 * 6594 * @throws android.content.pm.PackageManager.NameNotFoundException if the given component 6595 * to run as a {@link android.service.vr.VrListenerService} is not installed, or has 6596 * not been enabled in user settings. 6597 * 6598 * @see android.content.pm.PackageManager#FEATURE_VR_MODE 6599 * @see android.content.pm.PackageManager#FEATURE_VR_MODE_HIGH_PERFORMANCE 6600 * @see android.service.vr.VrListenerService 6601 * @see android.provider.Settings#ACTION_VR_LISTENER_SETTINGS 6602 * @see android.R.attr#enableVrMode 6603 */ 6604 public void setVrModeEnabled(boolean enabled, @NonNull ComponentName requestedComponent) 6605 throws PackageManager.NameNotFoundException { 6606 try { 6607 if (ActivityManager.getService().setVrMode(mToken, enabled, requestedComponent) 6608 != 0) { 6609 throw new PackageManager.NameNotFoundException( 6610 requestedComponent.flattenToString()); 6611 } 6612 } catch (RemoteException e) { 6613 // pass 6614 } 6615 } 6616 6617 /** 6618 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6619 * 6620 * @param callback Callback that will manage lifecycle events for this action mode 6621 * @return The ActionMode that was started, or null if it was canceled 6622 * 6623 * @see ActionMode 6624 */ 6625 @Nullable 6626 public ActionMode startActionMode(ActionMode.Callback callback) { 6627 return mWindow.getDecorView().startActionMode(callback); 6628 } 6629 6630 /** 6631 * Start an action mode of the given type. 6632 * 6633 * @param callback Callback that will manage lifecycle events for this action mode 6634 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6635 * @return The ActionMode that was started, or null if it was canceled 6636 * 6637 * @see ActionMode 6638 */ 6639 @Nullable 6640 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6641 return mWindow.getDecorView().startActionMode(callback, type); 6642 } 6643 6644 /** 6645 * Give the Activity a chance to control the UI for an action mode requested 6646 * by the system. 6647 * 6648 * <p>Note: If you are looking for a notification callback that an action mode 6649 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6650 * 6651 * @param callback The callback that should control the new action mode 6652 * @return The new action mode, or <code>null</code> if the activity does not want to 6653 * provide special handling for this action mode. (It will be handled by the system.) 6654 */ 6655 @Nullable 6656 @Override 6657 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6658 // Only Primary ActionModes are represented in the ActionBar. 6659 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6660 initWindowDecorActionBar(); 6661 if (mActionBar != null) { 6662 return mActionBar.startActionMode(callback); 6663 } 6664 } 6665 return null; 6666 } 6667 6668 /** 6669 * {@inheritDoc} 6670 */ 6671 @Nullable 6672 @Override 6673 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6674 try { 6675 mActionModeTypeStarting = type; 6676 return onWindowStartingActionMode(callback); 6677 } finally { 6678 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6679 } 6680 } 6681 6682 /** 6683 * Notifies the Activity that an action mode has been started. 6684 * Activity subclasses overriding this method should call the superclass implementation. 6685 * 6686 * @param mode The new action mode. 6687 */ 6688 @CallSuper 6689 @Override 6690 public void onActionModeStarted(ActionMode mode) { 6691 } 6692 6693 /** 6694 * Notifies the activity that an action mode has finished. 6695 * Activity subclasses overriding this method should call the superclass implementation. 6696 * 6697 * @param mode The action mode that just finished. 6698 */ 6699 @CallSuper 6700 @Override 6701 public void onActionModeFinished(ActionMode mode) { 6702 } 6703 6704 /** 6705 * Returns true if the app should recreate the task when navigating 'up' from this activity 6706 * by using targetIntent. 6707 * 6708 * <p>If this method returns false the app can trivially call 6709 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6710 * up navigation. If this method returns false, the app should synthesize a new task stack 6711 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6712 * 6713 * @param targetIntent An intent representing the target destination for up navigation 6714 * @return true if navigating up should recreate a new task stack, false if the same task 6715 * should be used for the destination 6716 */ 6717 public boolean shouldUpRecreateTask(Intent targetIntent) { 6718 try { 6719 PackageManager pm = getPackageManager(); 6720 ComponentName cn = targetIntent.getComponent(); 6721 if (cn == null) { 6722 cn = targetIntent.resolveActivity(pm); 6723 } 6724 ActivityInfo info = pm.getActivityInfo(cn, 0); 6725 if (info.taskAffinity == null) { 6726 return false; 6727 } 6728 return ActivityManager.getService() 6729 .shouldUpRecreateTask(mToken, info.taskAffinity); 6730 } catch (RemoteException e) { 6731 return false; 6732 } catch (NameNotFoundException e) { 6733 return false; 6734 } 6735 } 6736 6737 /** 6738 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6739 * in the process. If the activity indicated by upIntent already exists in the task's history, 6740 * this activity and all others before the indicated activity in the history stack will be 6741 * finished. 6742 * 6743 * <p>If the indicated activity does not appear in the history stack, this will finish 6744 * each activity in this task until the root activity of the task is reached, resulting in 6745 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6746 * when an activity may be reached by a path not passing through a canonical parent 6747 * activity.</p> 6748 * 6749 * <p>This method should be used when performing up navigation from within the same task 6750 * as the destination. If up navigation should cross tasks in some cases, see 6751 * {@link #shouldUpRecreateTask(Intent)}.</p> 6752 * 6753 * @param upIntent An intent representing the target destination for up navigation 6754 * 6755 * @return true if up navigation successfully reached the activity indicated by upIntent and 6756 * upIntent was delivered to it. false if an instance of the indicated activity could 6757 * not be found and this activity was simply finished normally. 6758 */ 6759 public boolean navigateUpTo(Intent upIntent) { 6760 if (mParent == null) { 6761 ComponentName destInfo = upIntent.getComponent(); 6762 if (destInfo == null) { 6763 destInfo = upIntent.resolveActivity(getPackageManager()); 6764 if (destInfo == null) { 6765 return false; 6766 } 6767 upIntent = new Intent(upIntent); 6768 upIntent.setComponent(destInfo); 6769 } 6770 int resultCode; 6771 Intent resultData; 6772 synchronized (this) { 6773 resultCode = mResultCode; 6774 resultData = mResultData; 6775 } 6776 if (resultData != null) { 6777 resultData.prepareToLeaveProcess(this); 6778 } 6779 try { 6780 upIntent.prepareToLeaveProcess(this); 6781 return ActivityManager.getService().navigateUpTo(mToken, upIntent, 6782 resultCode, resultData); 6783 } catch (RemoteException e) { 6784 return false; 6785 } 6786 } else { 6787 return mParent.navigateUpToFromChild(this, upIntent); 6788 } 6789 } 6790 6791 /** 6792 * This is called when a child activity of this one calls its 6793 * {@link #navigateUpTo} method. The default implementation simply calls 6794 * navigateUpTo(upIntent) on this activity (the parent). 6795 * 6796 * @param child The activity making the call. 6797 * @param upIntent An intent representing the target destination for up navigation 6798 * 6799 * @return true if up navigation successfully reached the activity indicated by upIntent and 6800 * upIntent was delivered to it. false if an instance of the indicated activity could 6801 * not be found and this activity was simply finished normally. 6802 */ 6803 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6804 return navigateUpTo(upIntent); 6805 } 6806 6807 /** 6808 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6809 * this activity's logical parent. The logical parent is named in the application's manifest 6810 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6811 * Activity subclasses may override this method to modify the Intent returned by 6812 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6813 * the parent intent entirely. 6814 * 6815 * @return a new Intent targeting the defined parent of this activity or null if 6816 * there is no valid parent. 6817 */ 6818 @Nullable 6819 public Intent getParentActivityIntent() { 6820 final String parentName = mActivityInfo.parentActivityName; 6821 if (TextUtils.isEmpty(parentName)) { 6822 return null; 6823 } 6824 6825 // If the parent itself has no parent, generate a main activity intent. 6826 final ComponentName target = new ComponentName(this, parentName); 6827 try { 6828 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6829 final String parentActivity = parentInfo.parentActivityName; 6830 final Intent parentIntent = parentActivity == null 6831 ? Intent.makeMainActivity(target) 6832 : new Intent().setComponent(target); 6833 return parentIntent; 6834 } catch (NameNotFoundException e) { 6835 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6836 "' in manifest"); 6837 return null; 6838 } 6839 } 6840 6841 /** 6842 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6843 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6844 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6845 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6846 * 6847 * @param callback Used to manipulate shared element transitions on the launched Activity. 6848 */ 6849 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6850 if (callback == null) { 6851 callback = SharedElementCallback.NULL_CALLBACK; 6852 } 6853 mEnterTransitionListener = callback; 6854 } 6855 6856 /** 6857 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6858 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6859 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6860 * calls will only come when returning from the started Activity. 6861 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6862 * 6863 * @param callback Used to manipulate shared element transitions on the launching Activity. 6864 */ 6865 public void setExitSharedElementCallback(SharedElementCallback callback) { 6866 if (callback == null) { 6867 callback = SharedElementCallback.NULL_CALLBACK; 6868 } 6869 mExitTransitionListener = callback; 6870 } 6871 6872 /** 6873 * Postpone the entering activity transition when Activity was started with 6874 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6875 * android.util.Pair[])}. 6876 * <p>This method gives the Activity the ability to delay starting the entering and 6877 * shared element transitions until all data is loaded. Until then, the Activity won't 6878 * draw into its window, leaving the window transparent. This may also cause the 6879 * returning animation to be delayed until data is ready. This method should be 6880 * called in {@link #onCreate(android.os.Bundle)} or in 6881 * {@link #onActivityReenter(int, android.content.Intent)}. 6882 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6883 * start the transitions. If the Activity did not use 6884 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6885 * android.util.Pair[])}, then this method does nothing.</p> 6886 */ 6887 public void postponeEnterTransition() { 6888 mActivityTransitionState.postponeEnterTransition(); 6889 } 6890 6891 /** 6892 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6893 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6894 * to have your Activity start drawing. 6895 */ 6896 public void startPostponedEnterTransition() { 6897 mActivityTransitionState.startPostponedEnterTransition(); 6898 } 6899 6900 /** 6901 * Create {@link DragAndDropPermissions} object bound to this activity and controlling the 6902 * access permissions for content URIs associated with the {@link DragEvent}. 6903 * @param event Drag event 6904 * @return The {@link DragAndDropPermissions} object used to control access to the content URIs. 6905 * Null if no content URIs are associated with the event or if permissions could not be granted. 6906 */ 6907 public DragAndDropPermissions requestDragAndDropPermissions(DragEvent event) { 6908 DragAndDropPermissions dragAndDropPermissions = DragAndDropPermissions.obtain(event); 6909 if (dragAndDropPermissions != null && dragAndDropPermissions.take(getActivityToken())) { 6910 return dragAndDropPermissions; 6911 } 6912 return null; 6913 } 6914 6915 // ------------------ Internal API ------------------ 6916 6917 final void setParent(Activity parent) { 6918 mParent = parent; 6919 } 6920 6921 final void attach(Context context, ActivityThread aThread, 6922 Instrumentation instr, IBinder token, int ident, 6923 Application application, Intent intent, ActivityInfo info, 6924 CharSequence title, Activity parent, String id, 6925 NonConfigurationInstances lastNonConfigurationInstances, 6926 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 6927 Window window, ActivityConfigCallback activityConfigCallback) { 6928 attachBaseContext(context); 6929 6930 mFragments.attachHost(null /*parent*/); 6931 6932 mWindow = new PhoneWindow(this, window, activityConfigCallback); 6933 mWindow.setWindowControllerCallback(this); 6934 mWindow.setCallback(this); 6935 mWindow.setOnWindowDismissedCallback(this); 6936 mWindow.getLayoutInflater().setPrivateFactory(this); 6937 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 6938 mWindow.setSoftInputMode(info.softInputMode); 6939 } 6940 if (info.uiOptions != 0) { 6941 mWindow.setUiOptions(info.uiOptions); 6942 } 6943 mUiThread = Thread.currentThread(); 6944 6945 mMainThread = aThread; 6946 mInstrumentation = instr; 6947 mToken = token; 6948 mIdent = ident; 6949 mApplication = application; 6950 mIntent = intent; 6951 mReferrer = referrer; 6952 mComponent = intent.getComponent(); 6953 mActivityInfo = info; 6954 mTitle = title; 6955 mParent = parent; 6956 mEmbeddedID = id; 6957 mLastNonConfigurationInstances = lastNonConfigurationInstances; 6958 if (voiceInteractor != null) { 6959 if (lastNonConfigurationInstances != null) { 6960 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 6961 } else { 6962 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 6963 Looper.myLooper()); 6964 } 6965 } 6966 6967 mWindow.setWindowManager( 6968 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 6969 mToken, mComponent.flattenToString(), 6970 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 6971 if (mParent != null) { 6972 mWindow.setContainer(mParent.getWindow()); 6973 } 6974 mWindowManager = mWindow.getWindowManager(); 6975 mCurrentConfig = config; 6976 6977 mWindow.setColorMode(info.colorMode); 6978 } 6979 6980 /** @hide */ 6981 public final IBinder getActivityToken() { 6982 return mParent != null ? mParent.getActivityToken() : mToken; 6983 } 6984 6985 final void performCreate(Bundle icicle) { 6986 performCreate(icicle, null); 6987 } 6988 6989 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 6990 mCanEnterPictureInPicture = true; 6991 restoreHasCurrentPermissionRequest(icicle); 6992 if (persistentState != null) { 6993 onCreate(icicle, persistentState); 6994 } else { 6995 onCreate(icicle); 6996 } 6997 mActivityTransitionState.readState(icicle); 6998 6999 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 7000 com.android.internal.R.styleable.Window_windowNoDisplay, false); 7001 mFragments.dispatchActivityCreated(); 7002 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7003 } 7004 7005 final void performNewIntent(Intent intent) { 7006 mCanEnterPictureInPicture = true; 7007 onNewIntent(intent); 7008 } 7009 7010 final void performStart() { 7011 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 7012 mFragments.noteStateNotSaved(); 7013 mCalled = false; 7014 mFragments.execPendingActions(); 7015 mInstrumentation.callActivityOnStart(this); 7016 if (!mCalled) { 7017 throw new SuperNotCalledException( 7018 "Activity " + mComponent.toShortString() + 7019 " did not call through to super.onStart()"); 7020 } 7021 mFragments.dispatchStart(); 7022 mFragments.reportLoaderStart(); 7023 7024 // This property is set for all builds except final release 7025 boolean isDlwarningEnabled = SystemProperties.getInt("ro.bionic.ld.warning", 0) == 1; 7026 boolean isAppDebuggable = 7027 (mApplication.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 7028 7029 if (isAppDebuggable || isDlwarningEnabled) { 7030 String dlwarning = getDlWarning(); 7031 if (dlwarning != null) { 7032 String appName = getApplicationInfo().loadLabel(getPackageManager()) 7033 .toString(); 7034 String warning = "Detected problems with app native libraries\n" + 7035 "(please consult log for detail):\n" + dlwarning; 7036 if (isAppDebuggable) { 7037 new AlertDialog.Builder(this). 7038 setTitle(appName). 7039 setMessage(warning). 7040 setPositiveButton(android.R.string.ok, null). 7041 setCancelable(false). 7042 show(); 7043 } else { 7044 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 7045 } 7046 } 7047 } 7048 7049 mActivityTransitionState.enterReady(this); 7050 } 7051 7052 final void performRestart() { 7053 mCanEnterPictureInPicture = true; 7054 mFragments.noteStateNotSaved(); 7055 7056 if (mToken != null && mParent == null) { 7057 // No need to check mStopped, the roots will check if they were actually stopped. 7058 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 7059 } 7060 7061 if (mStopped) { 7062 mStopped = false; 7063 7064 synchronized (mManagedCursors) { 7065 final int N = mManagedCursors.size(); 7066 for (int i=0; i<N; i++) { 7067 ManagedCursor mc = mManagedCursors.get(i); 7068 if (mc.mReleased || mc.mUpdated) { 7069 if (!mc.mCursor.requery()) { 7070 if (getApplicationInfo().targetSdkVersion 7071 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 7072 throw new IllegalStateException( 7073 "trying to requery an already closed cursor " 7074 + mc.mCursor); 7075 } 7076 } 7077 mc.mReleased = false; 7078 mc.mUpdated = false; 7079 } 7080 } 7081 } 7082 7083 mCalled = false; 7084 mInstrumentation.callActivityOnRestart(this); 7085 if (!mCalled) { 7086 throw new SuperNotCalledException( 7087 "Activity " + mComponent.toShortString() + 7088 " did not call through to super.onRestart()"); 7089 } 7090 performStart(); 7091 } 7092 } 7093 7094 final void performResume() { 7095 performRestart(); 7096 7097 mFragments.execPendingActions(); 7098 7099 mLastNonConfigurationInstances = null; 7100 7101 mCalled = false; 7102 // mResumed is set by the instrumentation 7103 mInstrumentation.callActivityOnResume(this); 7104 if (!mCalled) { 7105 throw new SuperNotCalledException( 7106 "Activity " + mComponent.toShortString() + 7107 " did not call through to super.onResume()"); 7108 } 7109 7110 // invisible activities must be finished before onResume() completes 7111 if (!mVisibleFromClient && !mFinished) { 7112 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 7113 if (getApplicationInfo().targetSdkVersion 7114 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 7115 throw new IllegalStateException( 7116 "Activity " + mComponent.toShortString() + 7117 " did not call finish() prior to onResume() completing"); 7118 } 7119 } 7120 7121 // Now really resume, and install the current status bar and menu. 7122 mCalled = false; 7123 7124 mFragments.dispatchResume(); 7125 mFragments.execPendingActions(); 7126 7127 onPostResume(); 7128 if (!mCalled) { 7129 throw new SuperNotCalledException( 7130 "Activity " + mComponent.toShortString() + 7131 " did not call through to super.onPostResume()"); 7132 } 7133 } 7134 7135 final void performPause() { 7136 mDoReportFullyDrawn = false; 7137 mFragments.dispatchPause(); 7138 mCalled = false; 7139 onPause(); 7140 mResumed = false; 7141 if (!mCalled && getApplicationInfo().targetSdkVersion 7142 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 7143 throw new SuperNotCalledException( 7144 "Activity " + mComponent.toShortString() + 7145 " did not call through to super.onPause()"); 7146 } 7147 mResumed = false; 7148 } 7149 7150 final void performUserLeaving() { 7151 onUserInteraction(); 7152 onUserLeaveHint(); 7153 } 7154 7155 final void performStop(boolean preserveWindow) { 7156 mDoReportFullyDrawn = false; 7157 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 7158 7159 // Disallow entering picture-in-picture after the activity has been stopped 7160 mCanEnterPictureInPicture = false; 7161 7162 if (!mStopped) { 7163 if (mWindow != null) { 7164 mWindow.closeAllPanels(); 7165 } 7166 7167 // If we're preserving the window, don't setStoppedState to true, since we 7168 // need the window started immediately again. Stopping the window will 7169 // destroys hardware resources and causes flicker. 7170 if (!preserveWindow && mToken != null && mParent == null) { 7171 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 7172 } 7173 7174 mFragments.dispatchStop(); 7175 7176 mCalled = false; 7177 mInstrumentation.callActivityOnStop(this); 7178 if (!mCalled) { 7179 throw new SuperNotCalledException( 7180 "Activity " + mComponent.toShortString() + 7181 " did not call through to super.onStop()"); 7182 } 7183 7184 synchronized (mManagedCursors) { 7185 final int N = mManagedCursors.size(); 7186 for (int i=0; i<N; i++) { 7187 ManagedCursor mc = mManagedCursors.get(i); 7188 if (!mc.mReleased) { 7189 mc.mCursor.deactivate(); 7190 mc.mReleased = true; 7191 } 7192 } 7193 } 7194 7195 mStopped = true; 7196 } 7197 mResumed = false; 7198 } 7199 7200 final void performDestroy() { 7201 mDestroyed = true; 7202 mWindow.destroy(); 7203 mFragments.dispatchDestroy(); 7204 onDestroy(); 7205 mFragments.doLoaderDestroy(); 7206 if (mVoiceInteractor != null) { 7207 mVoiceInteractor.detachActivity(); 7208 } 7209 } 7210 7211 final void dispatchMultiWindowModeChanged(boolean isInMultiWindowMode, 7212 Configuration newConfig) { 7213 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7214 "dispatchMultiWindowModeChanged " + this + ": " + isInMultiWindowMode 7215 + " " + newConfig); 7216 mFragments.dispatchMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7217 if (mWindow != null) { 7218 mWindow.onMultiWindowModeChanged(); 7219 } 7220 onMultiWindowModeChanged(isInMultiWindowMode, newConfig); 7221 } 7222 7223 final void dispatchPictureInPictureModeChanged(boolean isInPictureInPictureMode, 7224 Configuration newConfig) { 7225 if (DEBUG_LIFECYCLE) Slog.v(TAG, 7226 "dispatchPictureInPictureModeChanged " + this + ": " + isInPictureInPictureMode 7227 + " " + newConfig); 7228 mFragments.dispatchPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7229 if (mWindow != null) { 7230 mWindow.onPictureInPictureModeChanged(isInPictureInPictureMode); 7231 } 7232 onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig); 7233 } 7234 7235 /** 7236 * @hide 7237 */ 7238 public final boolean isResumed() { 7239 return mResumed; 7240 } 7241 7242 private void storeHasCurrentPermissionRequest(Bundle bundle) { 7243 if (bundle != null && mHasCurrentPermissionsRequest) { 7244 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 7245 } 7246 } 7247 7248 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 7249 if (bundle != null) { 7250 mHasCurrentPermissionsRequest = bundle.getBoolean( 7251 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 7252 } 7253 } 7254 7255 void dispatchActivityResult(String who, int requestCode, 7256 int resultCode, Intent data) { 7257 if (false) Log.v( 7258 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 7259 + ", resCode=" + resultCode + ", data=" + data); 7260 mFragments.noteStateNotSaved(); 7261 if (who == null) { 7262 onActivityResult(requestCode, resultCode, data); 7263 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 7264 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 7265 if (TextUtils.isEmpty(who)) { 7266 dispatchRequestPermissionsResult(requestCode, data); 7267 } else { 7268 Fragment frag = mFragments.findFragmentByWho(who); 7269 if (frag != null) { 7270 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 7271 } 7272 } 7273 } else if (who.startsWith("@android:view:")) { 7274 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 7275 getActivityToken()); 7276 for (ViewRootImpl viewRoot : views) { 7277 if (viewRoot.getView() != null 7278 && viewRoot.getView().dispatchActivityResult( 7279 who, requestCode, resultCode, data)) { 7280 return; 7281 } 7282 } 7283 } else if (who.startsWith(AUTO_FILL_AUTH_WHO_PREFIX)) { 7284 Intent resultData = (resultCode == Activity.RESULT_OK) ? data : null; 7285 getAutofillManager().onAuthenticationResult(requestCode, resultData); 7286 } else { 7287 Fragment frag = mFragments.findFragmentByWho(who); 7288 if (frag != null) { 7289 frag.onActivityResult(requestCode, resultCode, data); 7290 } 7291 } 7292 } 7293 7294 /** 7295 * Request to put this activity in a mode where the user is locked to a restricted set of 7296 * applications. 7297 * 7298 * <p>If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns {@code true} 7299 * for this component, the current task will be launched directly into LockTask mode. Only apps 7300 * whitelisted by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])} can 7301 * be launched while LockTask mode is active. The user will not be able to leave this mode 7302 * until this activity calls {@link #stopLockTask()}. Calling this method while the device is 7303 * already in LockTask mode has no effect. 7304 * 7305 * <p>Otherwise, the current task will be launched into screen pinning mode. In this case, the 7306 * system will prompt the user with a dialog requesting permission to use this mode. 7307 * The user can exit at any time through instructions shown on the request dialog. Calling 7308 * {@link #stopLockTask()} will also terminate this mode. 7309 * 7310 * <p><strong>Note:</strong> this method can only be called when the activity is foreground. 7311 * That is, between {@link #onResume()} and {@link #onPause()}. 7312 * 7313 * @see #stopLockTask() 7314 * @see android.R.attr#lockTaskMode 7315 */ 7316 public void startLockTask() { 7317 try { 7318 ActivityManager.getService().startLockTaskModeByToken(mToken); 7319 } catch (RemoteException e) { 7320 } 7321 } 7322 7323 /** 7324 * Stop the current task from being locked. 7325 * 7326 * <p>Called to end the LockTask or screen pinning mode started by {@link #startLockTask()}. 7327 * This can only be called by activities that have called {@link #startLockTask()} previously. 7328 * 7329 * <p><strong>Note:</strong> If the device is in LockTask mode that is not initially started 7330 * by this activity, then calling this method will not terminate the LockTask mode, but only 7331 * finish its own task. The device will remain in LockTask mode, until the activity which 7332 * started the LockTask mode calls this method, or until its whitelist authorization is revoked 7333 * by {@link DevicePolicyManager#setLockTaskPackages(ComponentName, String[])}. 7334 * 7335 * @see #startLockTask() 7336 * @see android.R.attr#lockTaskMode 7337 * @see ActivityManager#getLockTaskModeState() 7338 */ 7339 public void stopLockTask() { 7340 try { 7341 ActivityManager.getService().stopLockTaskModeByToken(mToken); 7342 } catch (RemoteException e) { 7343 } 7344 } 7345 7346 /** 7347 * Shows the user the system defined message for telling the user how to exit 7348 * lock task mode. The task containing this activity must be in lock task mode at the time 7349 * of this call for the message to be displayed. 7350 */ 7351 public void showLockTaskEscapeMessage() { 7352 try { 7353 ActivityManager.getService().showLockTaskEscapeMessage(mToken); 7354 } catch (RemoteException e) { 7355 } 7356 } 7357 7358 /** 7359 * Check whether the caption on freeform windows is displayed directly on the content. 7360 * 7361 * @return True if caption is displayed on content, false if it pushes the content down. 7362 * 7363 * @see #setOverlayWithDecorCaptionEnabled(boolean) 7364 * @hide 7365 */ 7366 public boolean isOverlayWithDecorCaptionEnabled() { 7367 return mWindow.isOverlayWithDecorCaptionEnabled(); 7368 } 7369 7370 /** 7371 * Set whether the caption should displayed directly on the content rather than push it down. 7372 * 7373 * This affects only freeform windows since they display the caption and only the main 7374 * window of the activity. The caption is used to drag the window around and also shows 7375 * maximize and close action buttons. 7376 * @hide 7377 */ 7378 public void setOverlayWithDecorCaptionEnabled(boolean enabled) { 7379 mWindow.setOverlayWithDecorCaptionEnabled(enabled); 7380 } 7381 7382 /** 7383 * Interface for informing a translucent {@link Activity} once all visible activities below it 7384 * have completed drawing. This is necessary only after an {@link Activity} has been made 7385 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 7386 * translucent again following a call to {@link 7387 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 7388 * ActivityOptions)} 7389 * 7390 * @hide 7391 */ 7392 @SystemApi 7393 public interface TranslucentConversionListener { 7394 /** 7395 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 7396 * below the top one have been redrawn. Following this callback it is safe to make the top 7397 * Activity translucent because the underlying Activity has been drawn. 7398 * 7399 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 7400 * occurred waiting for the Activity to complete drawing. 7401 * 7402 * @see Activity#convertFromTranslucent() 7403 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 7404 */ 7405 public void onTranslucentConversionComplete(boolean drawComplete); 7406 } 7407 7408 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 7409 mHasCurrentPermissionsRequest = false; 7410 // If the package installer crashed we may have not data - best effort. 7411 String[] permissions = (data != null) ? data.getStringArrayExtra( 7412 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7413 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7414 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7415 onRequestPermissionsResult(requestCode, permissions, grantResults); 7416 } 7417 7418 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 7419 Fragment fragment) { 7420 // If the package installer crashed we may have not data - best effort. 7421 String[] permissions = (data != null) ? data.getStringArrayExtra( 7422 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7423 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7424 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7425 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 7426 } 7427 7428 /** @hide */ 7429 @Override 7430 final public void autofillCallbackAuthenticate(int authenticationId, IntentSender intent, 7431 Intent fillInIntent) { 7432 try { 7433 startIntentSenderForResultInner(intent, AUTO_FILL_AUTH_WHO_PREFIX, 7434 authenticationId, fillInIntent, 0, 0, null); 7435 } catch (IntentSender.SendIntentException e) { 7436 Log.e(TAG, "authenticate() failed for intent:" + intent, e); 7437 } 7438 } 7439 7440 /** @hide */ 7441 @Override 7442 final public void autofillCallbackResetableStateAvailable() { 7443 mAutoFillResetNeeded = true; 7444 } 7445 7446 /** @hide */ 7447 @Override 7448 final public boolean autofillCallbackRequestShowFillUi(@NonNull View anchor, int width, 7449 int height, @Nullable Rect anchorBounds, IAutofillWindowPresenter presenter) { 7450 final boolean wasShowing; 7451 7452 if (mAutofillPopupWindow == null) { 7453 wasShowing = false; 7454 mAutofillPopupWindow = new AutofillPopupWindow(presenter); 7455 } else { 7456 wasShowing = mAutofillPopupWindow.isShowing(); 7457 } 7458 mAutofillPopupWindow.update(anchor, 0, 0, width, height, anchorBounds); 7459 7460 return !wasShowing && mAutofillPopupWindow.isShowing(); 7461 } 7462 7463 /** @hide */ 7464 @Override 7465 final public boolean autofillCallbackRequestHideFillUi() { 7466 if (mAutofillPopupWindow == null) { 7467 return false; 7468 } 7469 mAutofillPopupWindow.dismiss(); 7470 mAutofillPopupWindow = null; 7471 return true; 7472 } 7473 7474 /** @hide */ 7475 @Override 7476 @NonNull public View[] findViewsByAutofillIdTraversal(@NonNull int[] viewIds) { 7477 final View[] views = new View[viewIds.length]; 7478 final ArrayList<ViewRootImpl> roots = 7479 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7480 7481 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7482 final View rootView = roots.get(rootNum).getView(); 7483 7484 if (rootView != null) { 7485 for (int viewNum = 0; viewNum < viewIds.length; viewNum++) { 7486 if (views[viewNum] == null) { 7487 views[viewNum] = rootView.findViewByAutofillIdTraversal( 7488 viewIds[viewNum]); 7489 } 7490 } 7491 } 7492 } 7493 7494 return views; 7495 } 7496 7497 /** @hide */ 7498 @Override 7499 @Nullable public View findViewByAutofillIdTraversal(int viewId) { 7500 final ArrayList<ViewRootImpl> roots = 7501 WindowManagerGlobal.getInstance().getRootViews(getActivityToken()); 7502 for (int rootNum = 0; rootNum < roots.size(); rootNum++) { 7503 final View rootView = roots.get(rootNum).getView(); 7504 7505 if (rootView != null) { 7506 final View view = rootView.findViewByAutofillIdTraversal(viewId); 7507 if (view != null) { 7508 return view; 7509 } 7510 } 7511 } 7512 7513 return null; 7514 } 7515 7516 /** @hide */ 7517 @Override 7518 @NonNull public boolean[] getViewVisibility(@NonNull int[] viewIds) { 7519 final boolean[] isVisible = new boolean[viewIds.length]; 7520 final View views[] = findViewsByAutofillIdTraversal(viewIds); 7521 7522 for (int i = 0; i < viewIds.length; i++) { 7523 View view = views[i]; 7524 if (view == null) { 7525 isVisible[i] = false; 7526 continue; 7527 } 7528 7529 isVisible[i] = true; 7530 7531 // Check if the view is visible by checking all parents 7532 while (true) { 7533 if (view instanceof DecorView && view.getViewRootImpl() == view.getParent()) { 7534 break; 7535 } 7536 7537 if (view.getVisibility() != View.VISIBLE) { 7538 isVisible[i] = false; 7539 break; 7540 } 7541 7542 if (view.getParent() instanceof View) { 7543 view = (View) view.getParent(); 7544 } else { 7545 break; 7546 } 7547 } 7548 } 7549 7550 return isVisible; 7551 } 7552 7553 /** @hide */ 7554 @Override 7555 public boolean isVisibleForAutofill() { 7556 return !mStopped; 7557 } 7558 7559 /** 7560 * If set to true, this indicates to the system that it should never take a 7561 * screenshot of the activity to be used as a representation while it is not in a started state. 7562 * <p> 7563 * Note that the system may use the window background of the theme instead to represent 7564 * the window when it is not running. 7565 * <p> 7566 * Also note that in comparison to {@link android.view.WindowManager.LayoutParams#FLAG_SECURE}, 7567 * this only affects the behavior when the activity's screenshot would be used as a 7568 * representation when the activity is not in a started state, i.e. in Overview. The system may 7569 * still take screenshots of the activity in other contexts; for example, when the user takes a 7570 * screenshot of the entire screen, or when the active 7571 * {@link android.service.voice.VoiceInteractionService} requests a screenshot via 7572 * {@link android.service.voice.VoiceInteractionSession#SHOW_WITH_SCREENSHOT}. 7573 * 7574 * @param disable {@code true} to disable preview screenshots; {@code false} otherwise. 7575 * @hide 7576 */ 7577 @SystemApi 7578 public void setDisablePreviewScreenshots(boolean disable) { 7579 try { 7580 ActivityManager.getService().setDisablePreviewScreenshots(mToken, disable); 7581 } catch (RemoteException e) { 7582 Log.e(TAG, "Failed to call setDisablePreviewScreenshots", e); 7583 } 7584 } 7585 7586 /** 7587 * Specifies whether an {@link Activity} should be shown on top of the the lock screen whenever 7588 * the lockscreen is up and the activity is resumed. Normally an activity will be transitioned 7589 * to the stopped state if it is started while the lockscreen is up, but with this flag set the 7590 * activity will remain in the resumed state visible on-top of the lock screen. This value can 7591 * be set as a manifest attribute using {@link android.R.attr#showWhenLocked}. 7592 * 7593 * @param showWhenLocked {@code true} to show the {@link Activity} on top of the lock screen; 7594 * {@code false} otherwise. 7595 * @see #setTurnScreenOn(boolean) 7596 * @see android.R.attr#turnScreenOn 7597 * @see android.R.attr#showWhenLocked 7598 */ 7599 public void setShowWhenLocked(boolean showWhenLocked) { 7600 try { 7601 ActivityManager.getService().setShowWhenLocked(mToken, showWhenLocked); 7602 } catch (RemoteException e) { 7603 Log.e(TAG, "Failed to call setShowWhenLocked", e); 7604 } 7605 } 7606 7607 /** 7608 * Specifies whether the screen should be turned on when the {@link Activity} is resumed. 7609 * Normally an activity will be transitioned to the stopped state if it is started while the 7610 * screen if off, but with this flag set the activity will cause the screen to turn on if the 7611 * activity will be visible and resumed due to the screen coming on. The screen will not be 7612 * turned on if the activity won't be visible after the screen is turned on. This flag is 7613 * normally used in conjunction with the {@link android.R.attr#showWhenLocked} flag to make sure 7614 * the activity is visible after the screen is turned on when the lockscreen is up. In addition, 7615 * if this flag is set and the activity calls {@link 7616 * KeyguardManager#requestDismissKeyguard(Activity, KeyguardManager.KeyguardDismissCallback)} 7617 * the screen will turn on. 7618 * 7619 * @param turnScreenOn {@code true} to turn on the screen; {@code false} otherwise. 7620 * 7621 * @see #setShowWhenLocked(boolean) 7622 * @see android.R.attr#turnScreenOn 7623 * @see android.R.attr#showWhenLocked 7624 */ 7625 public void setTurnScreenOn(boolean turnScreenOn) { 7626 try { 7627 ActivityManager.getService().setTurnScreenOn(mToken, turnScreenOn); 7628 } catch (RemoteException e) { 7629 Log.e(TAG, "Failed to call setTurnScreenOn", e); 7630 } 7631 } 7632 7633 class HostCallbacks extends FragmentHostCallback<Activity> { 7634 public HostCallbacks() { 7635 super(Activity.this /*activity*/); 7636 } 7637 7638 @Override 7639 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 7640 Activity.this.dump(prefix, fd, writer, args); 7641 } 7642 7643 @Override 7644 public boolean onShouldSaveFragmentState(Fragment fragment) { 7645 return !isFinishing(); 7646 } 7647 7648 @Override 7649 public LayoutInflater onGetLayoutInflater() { 7650 final LayoutInflater result = Activity.this.getLayoutInflater(); 7651 if (onUseFragmentManagerInflaterFactory()) { 7652 return result.cloneInContext(Activity.this); 7653 } 7654 return result; 7655 } 7656 7657 @Override 7658 public boolean onUseFragmentManagerInflaterFactory() { 7659 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 7660 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 7661 } 7662 7663 @Override 7664 public Activity onGetHost() { 7665 return Activity.this; 7666 } 7667 7668 @Override 7669 public void onInvalidateOptionsMenu() { 7670 Activity.this.invalidateOptionsMenu(); 7671 } 7672 7673 @Override 7674 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 7675 Bundle options) { 7676 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 7677 } 7678 7679 @Override 7680 public void onStartActivityAsUserFromFragment( 7681 Fragment fragment, Intent intent, int requestCode, Bundle options, 7682 UserHandle user) { 7683 Activity.this.startActivityAsUserFromFragment( 7684 fragment, intent, requestCode, options, user); 7685 } 7686 7687 @Override 7688 public void onStartIntentSenderFromFragment(Fragment fragment, IntentSender intent, 7689 int requestCode, @Nullable Intent fillInIntent, int flagsMask, int flagsValues, 7690 int extraFlags, Bundle options) throws IntentSender.SendIntentException { 7691 if (mParent == null) { 7692 startIntentSenderForResultInner(intent, fragment.mWho, requestCode, fillInIntent, 7693 flagsMask, flagsValues, options); 7694 } else if (options != null) { 7695 mParent.startIntentSenderFromChildFragment(fragment, intent, requestCode, 7696 fillInIntent, flagsMask, flagsValues, extraFlags, options); 7697 } 7698 } 7699 7700 @Override 7701 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 7702 int requestCode) { 7703 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 7704 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 7705 startActivityForResult(who, intent, requestCode, null); 7706 } 7707 7708 @Override 7709 public boolean onHasWindowAnimations() { 7710 return getWindow() != null; 7711 } 7712 7713 @Override 7714 public int onGetWindowAnimations() { 7715 final Window w = getWindow(); 7716 return (w == null) ? 0 : w.getAttributes().windowAnimations; 7717 } 7718 7719 @Override 7720 public void onAttachFragment(Fragment fragment) { 7721 Activity.this.onAttachFragment(fragment); 7722 } 7723 7724 @Nullable 7725 @Override 7726 public <T extends View> T onFindViewById(int id) { 7727 return Activity.this.findViewById(id); 7728 } 7729 7730 @Override 7731 public boolean onHasView() { 7732 final Window w = getWindow(); 7733 return (w != null && w.peekDecorView() != null); 7734 } 7735 } 7736} 7737