Activity.java revision 717b2b9cd037ddb1a85a26ab88fe7d633c88a565
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.drawable.Drawable; 56import android.hardware.input.InputManager; 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.StrictMode; 70import android.os.SystemProperties; 71import android.os.UserHandle; 72import android.text.Selection; 73import android.text.SpannableStringBuilder; 74import android.text.TextUtils; 75import android.text.method.TextKeyListener; 76import android.transition.Scene; 77import android.transition.TransitionManager; 78import android.util.ArrayMap; 79import android.util.AttributeSet; 80import android.util.EventLog; 81import android.util.Log; 82import android.util.PrintWriterPrinter; 83import android.util.Slog; 84import android.util.SparseArray; 85import android.util.SuperNotCalledException; 86import android.view.ActionMode; 87import android.view.ContextMenu; 88import android.view.ContextMenu.ContextMenuInfo; 89import android.view.ContextThemeWrapper; 90import android.view.DragAndDropPermissions; 91import android.view.DragEvent; 92import android.view.InputDevice; 93import android.view.KeyCharacterMap; 94import android.view.KeyEvent; 95import android.view.KeyboardShortcutGroup; 96import android.view.KeyboardShortcutInfo; 97import android.view.LayoutInflater; 98import android.view.Menu; 99import android.view.MenuInflater; 100import android.view.MenuItem; 101import android.view.MotionEvent; 102import android.view.SearchEvent; 103import android.view.View; 104import android.view.View.OnCreateContextMenuListener; 105import android.view.ViewGroup; 106import android.view.ViewGroup.LayoutParams; 107import android.view.ViewManager; 108import android.view.ViewRootImpl; 109import android.view.Window; 110import android.view.Window.WindowControllerCallback; 111import android.view.WindowManager; 112import android.view.WindowManagerGlobal; 113import android.view.accessibility.AccessibilityEvent; 114import android.widget.AdapterView; 115import android.widget.Toast; 116import android.widget.Toolbar; 117 118import com.android.internal.app.IVoiceInteractor; 119import com.android.internal.app.ToolbarActionBar; 120import com.android.internal.app.WindowDecorActionBar; 121import com.android.internal.policy.PhoneWindow; 122 123import java.io.FileDescriptor; 124import java.io.PrintWriter; 125import java.lang.annotation.Retention; 126import java.lang.annotation.RetentionPolicy; 127import java.util.ArrayList; 128import java.util.HashMap; 129import java.util.List; 130 131/** 132 * An activity is a single, focused thing that the user can do. Almost all 133 * activities interact with the user, so the Activity class takes care of 134 * creating a window for you in which you can place your UI with 135 * {@link #setContentView}. While activities are often presented to the user 136 * as full-screen windows, they can also be used in other ways: as floating 137 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 138 * or embedded inside of another activity (using {@link ActivityGroup}). 139 * 140 * There are two methods almost all subclasses of Activity will implement: 141 * 142 * <ul> 143 * <li> {@link #onCreate} is where you initialize your activity. Most 144 * importantly, here you will usually call {@link #setContentView(int)} 145 * with a layout resource defining your UI, and using {@link #findViewById} 146 * to retrieve the widgets in that UI that you need to interact with 147 * programmatically. 148 * 149 * <li> {@link #onPause} is where you deal with the user leaving your 150 * activity. Most importantly, any changes made by the user should at this 151 * point be committed (usually to the 152 * {@link android.content.ContentProvider} holding the data). 153 * </ul> 154 * 155 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 156 * activity classes must have a corresponding 157 * {@link android.R.styleable#AndroidManifestActivity <activity>} 158 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 159 * 160 * <p>Topics covered here: 161 * <ol> 162 * <li><a href="#Fragments">Fragments</a> 163 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 164 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 165 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 166 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 167 * <li><a href="#Permissions">Permissions</a> 168 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 169 * </ol> 170 * 171 * <div class="special reference"> 172 * <h3>Developer Guides</h3> 173 * <p>The Activity class is an important part of an application's overall lifecycle, 174 * and the way activities are launched and put together is a fundamental 175 * part of the platform's application model. For a detailed perspective on the structure of an 176 * Android application and how activities behave, please read the 177 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 178 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 179 * developer guides.</p> 180 * 181 * <p>You can also find a detailed discussion about how to create activities in the 182 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 183 * developer guide.</p> 184 * </div> 185 * 186 * <a name="Fragments"></a> 187 * <h3>Fragments</h3> 188 * 189 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 190 * implementations can make use of the {@link Fragment} class to better 191 * modularize their code, build more sophisticated user interfaces for larger 192 * screens, and help scale their application between small and large screens. 193 * 194 * <a name="ActivityLifecycle"></a> 195 * <h3>Activity Lifecycle</h3> 196 * 197 * <p>Activities in the system are managed as an <em>activity stack</em>. 198 * When a new activity is started, it is placed on the top of the stack 199 * and becomes the running activity -- the previous activity always remains 200 * below it in the stack, and will not come to the foreground again until 201 * the new activity exits.</p> 202 * 203 * <p>An activity has essentially four states:</p> 204 * <ul> 205 * <li> If an activity is in the foreground of the screen (at the top of 206 * the stack), 207 * it is <em>active</em> or <em>running</em>. </li> 208 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 209 * or transparent activity has focus on top of your activity), it 210 * is <em>paused</em>. A paused activity is completely alive (it 211 * maintains all state and member information and remains attached to 212 * the window manager), but can be killed by the system in extreme 213 * low memory situations. 214 * <li>If an activity is completely obscured by another activity, 215 * it is <em>stopped</em>. It still retains all state and member information, 216 * however, it is no longer visible to the user so its window is hidden 217 * and it will often be killed by the system when memory is needed 218 * elsewhere.</li> 219 * <li>If an activity is paused or stopped, the system can drop the activity 220 * from memory by either asking it to finish, or simply killing its 221 * process. When it is displayed again to the user, it must be 222 * completely restarted and restored to its previous state.</li> 223 * </ul> 224 * 225 * <p>The following diagram shows the important state paths of an Activity. 226 * The square rectangles represent callback methods you can implement to 227 * perform operations when the Activity moves between states. The colored 228 * ovals are major states the Activity can be in.</p> 229 * 230 * <p><img src="../../../images/activity_lifecycle.png" 231 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 232 * 233 * <p>There are three key loops you may be interested in monitoring within your 234 * activity: 235 * 236 * <ul> 237 * <li>The <b>entire lifetime</b> of an activity happens between the first call 238 * to {@link android.app.Activity#onCreate} through to a single final call 239 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 240 * of "global" state in onCreate(), and release all remaining resources in 241 * onDestroy(). For example, if it has a thread running in the background 242 * to download data from the network, it may create that thread in onCreate() 243 * and then stop the thread in onDestroy(). 244 * 245 * <li>The <b>visible lifetime</b> of an activity happens between a call to 246 * {@link android.app.Activity#onStart} until a corresponding call to 247 * {@link android.app.Activity#onStop}. During this time the user can see the 248 * activity on-screen, though it may not be in the foreground and interacting 249 * with the user. Between these two methods you can maintain resources that 250 * are needed to show the activity to the user. For example, you can register 251 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 252 * that impact your UI, and unregister it in onStop() when the user no 253 * longer sees what you are displaying. The onStart() and onStop() methods 254 * can be called multiple times, as the activity becomes visible and hidden 255 * to the user. 256 * 257 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 258 * {@link android.app.Activity#onResume} until a corresponding call to 259 * {@link android.app.Activity#onPause}. During this time the activity is 260 * in front of all other activities and interacting with the user. An activity 261 * can frequently go between the resumed and paused states -- for example when 262 * the device goes to sleep, when an activity result is delivered, when a new 263 * intent is delivered -- so the code in these methods should be fairly 264 * lightweight. 265 * </ul> 266 * 267 * <p>The entire lifecycle of an activity is defined by the following 268 * Activity methods. All of these are hooks that you can override 269 * to do appropriate work when the activity changes state. All 270 * activities will implement {@link android.app.Activity#onCreate} 271 * to do their initial setup; many will also implement 272 * {@link android.app.Activity#onPause} to commit changes to data and 273 * otherwise prepare to stop interacting with the user. You should always 274 * call up to your superclass when implementing these methods.</p> 275 * 276 * </p> 277 * <pre class="prettyprint"> 278 * public class Activity extends ApplicationContext { 279 * protected void onCreate(Bundle savedInstanceState); 280 * 281 * protected void onStart(); 282 * 283 * protected void onRestart(); 284 * 285 * protected void onResume(); 286 * 287 * protected void onPause(); 288 * 289 * protected void onStop(); 290 * 291 * protected void onDestroy(); 292 * } 293 * </pre> 294 * 295 * <p>In general the movement through an activity's lifecycle looks like 296 * this:</p> 297 * 298 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 299 * <colgroup align="left" span="3" /> 300 * <colgroup align="left" /> 301 * <colgroup align="center" /> 302 * <colgroup align="center" /> 303 * 304 * <thead> 305 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 306 * </thead> 307 * 308 * <tbody> 309 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</td> 310 * <td>Called when the activity is first created. 311 * This is where you should do all of your normal static set up: 312 * create views, bind data to lists, etc. This method also 313 * provides you with a Bundle containing the activity's previously 314 * frozen state, if there was one. 315 * <p>Always followed by <code>onStart()</code>.</td> 316 * <td align="center">No</td> 317 * <td align="center"><code>onStart()</code></td> 318 * </tr> 319 * 320 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 321 * <td colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</td> 322 * <td>Called after your activity has been stopped, prior to it being 323 * started again. 324 * <p>Always followed by <code>onStart()</code></td> 325 * <td align="center">No</td> 326 * <td align="center"><code>onStart()</code></td> 327 * </tr> 328 * 329 * <tr><td colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</td> 330 * <td>Called when the activity is becoming visible to the user. 331 * <p>Followed by <code>onResume()</code> if the activity comes 332 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 333 * <td align="center">No</td> 334 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 335 * </tr> 336 * 337 * <tr><td rowspan="2" style="border-left: none;"> </td> 338 * <td align="left" border="0">{@link android.app.Activity#onResume onResume()}</td> 339 * <td>Called when the activity will start 340 * interacting with the user. At this point your activity is at 341 * the top of the activity stack, with user input going to it. 342 * <p>Always followed by <code>onPause()</code>.</td> 343 * <td align="center">No</td> 344 * <td align="center"><code>onPause()</code></td> 345 * </tr> 346 * 347 * <tr><td align="left" border="0">{@link android.app.Activity#onPause onPause()}</td> 348 * <td>Called when the system is about to start resuming a previous 349 * activity. This is typically used to commit unsaved changes to 350 * persistent data, stop animations and other things that may be consuming 351 * CPU, etc. Implementations of this method must be very quick because 352 * the next activity will not be resumed until this method returns. 353 * <p>Followed by either <code>onResume()</code> if the activity 354 * returns back to the front, or <code>onStop()</code> if it becomes 355 * invisible to the user.</td> 356 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 357 * <td align="center"><code>onResume()</code> or<br> 358 * <code>onStop()</code></td> 359 * </tr> 360 * 361 * <tr><td colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</td> 362 * <td>Called when the activity is no longer visible to the user, because 363 * another activity has been resumed and is covering this one. This 364 * may happen either because a new activity is being started, an existing 365 * one is being brought in front of this one, or this one is being 366 * destroyed. 367 * <p>Followed by either <code>onRestart()</code> if 368 * this activity is coming back to interact with the user, or 369 * <code>onDestroy()</code> if this activity is going away.</td> 370 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 371 * <td align="center"><code>onRestart()</code> or<br> 372 * <code>onDestroy()</code></td> 373 * </tr> 374 * 375 * <tr><td colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</td> 376 * <td>The final call you receive before your 377 * activity is destroyed. This can happen either because the 378 * activity is finishing (someone called {@link Activity#finish} on 379 * it, or because the system is temporarily destroying this 380 * instance of the activity to save space. You can distinguish 381 * between these two scenarios with the {@link 382 * Activity#isFinishing} method.</td> 383 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 384 * <td align="center"><em>nothing</em></td> 385 * </tr> 386 * </tbody> 387 * </table> 388 * 389 * <p>Note the "Killable" column in the above table -- for those methods that 390 * are marked as being killable, after that method returns the process hosting the 391 * activity may be killed by the system <em>at any time</em> without another line 392 * of its code being executed. Because of this, you should use the 393 * {@link #onPause} method to write any persistent data (such as user edits) 394 * to storage. In addition, the method 395 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 396 * in such a background state, allowing you to save away any dynamic instance 397 * state in your activity into the given Bundle, to be later received in 398 * {@link #onCreate} if the activity needs to be re-created. 399 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 400 * section for more information on how the lifecycle of a process is tied 401 * to the activities it is hosting. Note that it is important to save 402 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 403 * because the latter is not part of the lifecycle callbacks, so will not 404 * be called in every situation as described in its documentation.</p> 405 * 406 * <p class="note">Be aware that these semantics will change slightly between 407 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 408 * vs. those targeting prior platforms. Starting with Honeycomb, an application 409 * is not in the killable state until its {@link #onStop} has returned. This 410 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 411 * safely called after {@link #onPause()} and allows and application to safely 412 * wait until {@link #onStop()} to save persistent state.</p> 413 * 414 * <p>For those methods that are not marked as being killable, the activity's 415 * process will not be killed by the system starting from the time the method 416 * is called and continuing after it returns. Thus an activity is in the killable 417 * state, for example, between after <code>onPause()</code> to the start of 418 * <code>onResume()</code>.</p> 419 * 420 * <a name="ConfigurationChanges"></a> 421 * <h3>Configuration Changes</h3> 422 * 423 * <p>If the configuration of the device (as defined by the 424 * {@link Configuration Resources.Configuration} class) changes, 425 * then anything displaying a user interface will need to update to match that 426 * configuration. Because Activity is the primary mechanism for interacting 427 * with the user, it includes special support for handling configuration 428 * changes.</p> 429 * 430 * <p>Unless you specify otherwise, a configuration change (such as a change 431 * in screen orientation, language, input devices, etc) will cause your 432 * current activity to be <em>destroyed</em>, going through the normal activity 433 * lifecycle process of {@link #onPause}, 434 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 435 * had been in the foreground or visible to the user, once {@link #onDestroy} is 436 * called in that instance then a new instance of the activity will be 437 * created, with whatever savedInstanceState the previous instance had generated 438 * from {@link #onSaveInstanceState}.</p> 439 * 440 * <p>This is done because any application resource, 441 * including layout files, can change based on any configuration value. Thus 442 * the only safe way to handle a configuration change is to re-retrieve all 443 * resources, including layouts, drawables, and strings. Because activities 444 * must already know how to save their state and re-create themselves from 445 * that state, this is a convenient way to have an activity restart itself 446 * with a new configuration.</p> 447 * 448 * <p>In some special cases, you may want to bypass restarting of your 449 * activity based on one or more types of configuration changes. This is 450 * done with the {@link android.R.attr#configChanges android:configChanges} 451 * attribute in its manifest. For any types of configuration changes you say 452 * that you handle there, you will receive a call to your current activity's 453 * {@link #onConfigurationChanged} method instead of being restarted. If 454 * a configuration change involves any that you do not handle, however, the 455 * activity will still be restarted and {@link #onConfigurationChanged} 456 * will not be called.</p> 457 * 458 * <a name="StartingActivities"></a> 459 * <h3>Starting Activities and Getting Results</h3> 460 * 461 * <p>The {@link android.app.Activity#startActivity} 462 * method is used to start a 463 * new activity, which will be placed at the top of the activity stack. It 464 * takes a single argument, an {@link android.content.Intent Intent}, 465 * which describes the activity 466 * to be executed.</p> 467 * 468 * <p>Sometimes you want to get a result back from an activity when it 469 * ends. For example, you may start an activity that lets the user pick 470 * a person in a list of contacts; when it ends, it returns the person 471 * that was selected. To do this, you call the 472 * {@link android.app.Activity#startActivityForResult(Intent, int)} 473 * version with a second integer parameter identifying the call. The result 474 * will come back through your {@link android.app.Activity#onActivityResult} 475 * method.</p> 476 * 477 * <p>When an activity exits, it can call 478 * {@link android.app.Activity#setResult(int)} 479 * to return data back to its parent. It must always supply a result code, 480 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 481 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 482 * return back an Intent containing any additional data it wants. All of this 483 * information appears back on the 484 * parent's <code>Activity.onActivityResult()</code>, along with the integer 485 * identifier it originally supplied.</p> 486 * 487 * <p>If a child activity fails for any reason (such as crashing), the parent 488 * activity will receive a result with the code RESULT_CANCELED.</p> 489 * 490 * <pre class="prettyprint"> 491 * public class MyActivity extends Activity { 492 * ... 493 * 494 * static final int PICK_CONTACT_REQUEST = 0; 495 * 496 * public boolean onKeyDown(int keyCode, KeyEvent event) { 497 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 498 * // When the user center presses, let them pick a contact. 499 * startActivityForResult( 500 * new Intent(Intent.ACTION_PICK, 501 * new Uri("content://contacts")), 502 * PICK_CONTACT_REQUEST); 503 * return true; 504 * } 505 * return false; 506 * } 507 * 508 * protected void onActivityResult(int requestCode, int resultCode, 509 * Intent data) { 510 * if (requestCode == PICK_CONTACT_REQUEST) { 511 * if (resultCode == RESULT_OK) { 512 * // A contact was picked. Here we will just display it 513 * // to the user. 514 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 515 * } 516 * } 517 * } 518 * } 519 * </pre> 520 * 521 * <a name="SavingPersistentState"></a> 522 * <h3>Saving Persistent State</h3> 523 * 524 * <p>There are generally two kinds of persistent state than an activity 525 * will deal with: shared document-like data (typically stored in a SQLite 526 * database using a {@linkplain android.content.ContentProvider content provider}) 527 * and internal state such as user preferences.</p> 528 * 529 * <p>For content provider data, we suggest that activities use a 530 * "edit in place" user model. That is, any edits a user makes are effectively 531 * made immediately without requiring an additional confirmation step. 532 * Supporting this model is generally a simple matter of following two rules:</p> 533 * 534 * <ul> 535 * <li> <p>When creating a new document, the backing database entry or file for 536 * it is created immediately. For example, if the user chooses to write 537 * a new e-mail, a new entry for that e-mail is created as soon as they 538 * start entering data, so that if they go to any other activity after 539 * that point this e-mail will now appear in the list of drafts.</p> 540 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 541 * commit to the backing content provider or file any changes the user 542 * has made. This ensures that those changes will be seen by any other 543 * activity that is about to run. You will probably want to commit 544 * your data even more aggressively at key times during your 545 * activity's lifecycle: for example before starting a new 546 * activity, before finishing your own activity, when the user 547 * switches between input fields, etc.</p> 548 * </ul> 549 * 550 * <p>This model is designed to prevent data loss when a user is navigating 551 * between activities, and allows the system to safely kill an activity (because 552 * system resources are needed somewhere else) at any time after it has been 553 * paused. Note this implies 554 * that the user pressing BACK from your activity does <em>not</em> 555 * mean "cancel" -- it means to leave the activity with its current contents 556 * saved away. Canceling edits in an activity must be provided through 557 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 558 * 559 * <p>See the {@linkplain android.content.ContentProvider content package} for 560 * more information about content providers. These are a key aspect of how 561 * different activities invoke and propagate data between themselves.</p> 562 * 563 * <p>The Activity class also provides an API for managing internal persistent state 564 * associated with an activity. This can be used, for example, to remember 565 * the user's preferred initial display in a calendar (day view or week view) 566 * or the user's default home page in a web browser.</p> 567 * 568 * <p>Activity persistent state is managed 569 * with the method {@link #getPreferences}, 570 * allowing you to retrieve and 571 * modify a set of name/value pairs associated with the activity. To use 572 * preferences that are shared across multiple application components 573 * (activities, receivers, services, providers), you can use the underlying 574 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 575 * to retrieve a preferences 576 * object stored under a specific name. 577 * (Note that it is not possible to share settings data across application 578 * packages -- for that you will need a content provider.)</p> 579 * 580 * <p>Here is an excerpt from a calendar activity that stores the user's 581 * preferred view mode in its persistent settings:</p> 582 * 583 * <pre class="prettyprint"> 584 * public class CalendarActivity extends Activity { 585 * ... 586 * 587 * static final int DAY_VIEW_MODE = 0; 588 * static final int WEEK_VIEW_MODE = 1; 589 * 590 * private SharedPreferences mPrefs; 591 * private int mCurViewMode; 592 * 593 * protected void onCreate(Bundle savedInstanceState) { 594 * super.onCreate(savedInstanceState); 595 * 596 * SharedPreferences mPrefs = getSharedPreferences(); 597 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 598 * } 599 * 600 * protected void onPause() { 601 * super.onPause(); 602 * 603 * SharedPreferences.Editor ed = mPrefs.edit(); 604 * ed.putInt("view_mode", mCurViewMode); 605 * ed.commit(); 606 * } 607 * } 608 * </pre> 609 * 610 * <a name="Permissions"></a> 611 * <h3>Permissions</h3> 612 * 613 * <p>The ability to start a particular Activity can be enforced when it is 614 * declared in its 615 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 616 * tag. By doing so, other applications will need to declare a corresponding 617 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 618 * element in their own manifest to be able to start that activity. 619 * 620 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 621 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 622 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 623 * Activity access to the specific URIs in the Intent. Access will remain 624 * until the Activity has finished (it will remain across the hosting 625 * process being killed and other temporary destruction). As of 626 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 627 * was already created and a new Intent is being delivered to 628 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 629 * to the existing ones it holds. 630 * 631 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 632 * document for more information on permissions and security in general. 633 * 634 * <a name="ProcessLifecycle"></a> 635 * <h3>Process Lifecycle</h3> 636 * 637 * <p>The Android system attempts to keep application process around for as 638 * long as possible, but eventually will need to remove old processes when 639 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 640 * Lifecycle</a>, the decision about which process to remove is intimately 641 * tied to the state of the user's interaction with it. In general, there 642 * are four states a process can be in based on the activities running in it, 643 * listed here in order of importance. The system will kill less important 644 * processes (the last ones) before it resorts to killing more important 645 * processes (the first ones). 646 * 647 * <ol> 648 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 649 * that the user is currently interacting with) is considered the most important. 650 * Its process will only be killed as a last resort, if it uses more memory 651 * than is available on the device. Generally at this point the device has 652 * reached a memory paging state, so this is required in order to keep the user 653 * interface responsive. 654 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 655 * but not in the foreground, such as one sitting behind a foreground dialog) 656 * is considered extremely important and will not be killed unless that is 657 * required to keep the foreground activity running. 658 * <li> <p>A <b>background activity</b> (an activity that is not visible to 659 * the user and has been paused) is no longer critical, so the system may 660 * safely kill its process to reclaim memory for other foreground or 661 * visible processes. If its process needs to be killed, when the user navigates 662 * back to the activity (making it visible on the screen again), its 663 * {@link #onCreate} method will be called with the savedInstanceState it had previously 664 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 665 * state as the user last left it. 666 * <li> <p>An <b>empty process</b> is one hosting no activities or other 667 * application components (such as {@link Service} or 668 * {@link android.content.BroadcastReceiver} classes). These are killed very 669 * quickly by the system as memory becomes low. For this reason, any 670 * background operation you do outside of an activity must be executed in the 671 * context of an activity BroadcastReceiver or Service to ensure that the system 672 * knows it needs to keep your process around. 673 * </ol> 674 * 675 * <p>Sometimes an Activity may need to do a long-running operation that exists 676 * independently of the activity lifecycle itself. An example may be a camera 677 * application that allows you to upload a picture to a web site. The upload 678 * may take a long time, and the application should allow the user to leave 679 * the application while it is executing. To accomplish this, your Activity 680 * should start a {@link Service} in which the upload takes place. This allows 681 * the system to properly prioritize your process (considering it to be more 682 * important than other non-visible applications) for the duration of the 683 * upload, independent of whether the original activity is paused, stopped, 684 * or finished. 685 */ 686public class Activity extends ContextThemeWrapper 687 implements LayoutInflater.Factory2, 688 Window.Callback, KeyEvent.Callback, 689 OnCreateContextMenuListener, ComponentCallbacks2, 690 Window.OnWindowDismissedCallback, WindowControllerCallback { 691 private static final String TAG = "Activity"; 692 private static final boolean DEBUG_LIFECYCLE = false; 693 694 /** Standard activity result: operation canceled. */ 695 public static final int RESULT_CANCELED = 0; 696 /** Standard activity result: operation succeeded. */ 697 public static final int RESULT_OK = -1; 698 /** Start of user-defined activity results. */ 699 public static final int RESULT_FIRST_USER = 1; 700 701 /** @hide Task isn't finished when activity is finished */ 702 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 703 /** 704 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 705 * past behavior the task is also removed from recents. 706 */ 707 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 708 /** 709 * @hide Task is finished along with the finishing activity, but it is not removed from 710 * recents. 711 */ 712 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 713 714 static final String FRAGMENTS_TAG = "android:fragments"; 715 716 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 717 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 718 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 719 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 720 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 721 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 722 "android:hasCurrentPermissionsRequest"; 723 724 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 725 726 private static final String KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME = "com.android.systemui"; 727 728 private static class ManagedDialog { 729 Dialog mDialog; 730 Bundle mArgs; 731 } 732 private SparseArray<ManagedDialog> mManagedDialogs; 733 734 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 735 private Instrumentation mInstrumentation; 736 private IBinder mToken; 737 private int mIdent; 738 /*package*/ String mEmbeddedID; 739 private Application mApplication; 740 /*package*/ Intent mIntent; 741 /*package*/ String mReferrer; 742 private ComponentName mComponent; 743 /*package*/ ActivityInfo mActivityInfo; 744 /*package*/ ActivityThread mMainThread; 745 Activity mParent; 746 boolean mCalled; 747 /*package*/ boolean mResumed; 748 /*package*/ boolean mStopped; 749 boolean mFinished; 750 boolean mStartedActivity; 751 private boolean mDestroyed; 752 private boolean mDoReportFullyDrawn = true; 753 /** true if the activity is going through a transient pause */ 754 /*package*/ boolean mTemporaryPause = false; 755 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 756 /*package*/ boolean mChangingConfigurations = false; 757 /*package*/ int mConfigChangeFlags; 758 /*package*/ Configuration mCurrentConfig; 759 private SearchManager mSearchManager; 760 private MenuInflater mMenuInflater; 761 762 static final class NonConfigurationInstances { 763 Object activity; 764 HashMap<String, Object> children; 765 FragmentManagerNonConfig fragments; 766 ArrayMap<String, LoaderManager> loaders; 767 VoiceInteractor voiceInteractor; 768 } 769 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 770 771 private Window mWindow; 772 773 private WindowManager mWindowManager; 774 /*package*/ View mDecor = null; 775 /*package*/ boolean mWindowAdded = false; 776 /*package*/ boolean mVisibleFromServer = false; 777 /*package*/ boolean mVisibleFromClient = true; 778 /*package*/ ActionBar mActionBar = null; 779 private boolean mEnableDefaultActionBarUp; 780 781 private VoiceInteractor mVoiceInteractor; 782 783 private CharSequence mTitle; 784 private int mTitleColor = 0; 785 786 // we must have a handler before the FragmentController is constructed 787 final Handler mHandler = new Handler(); 788 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 789 790 // Most recent call to requestVisibleBehind(). 791 boolean mVisibleBehind; 792 793 private static final class ManagedCursor { 794 ManagedCursor(Cursor cursor) { 795 mCursor = cursor; 796 mReleased = false; 797 mUpdated = false; 798 } 799 800 private final Cursor mCursor; 801 private boolean mReleased; 802 private boolean mUpdated; 803 } 804 private final ArrayList<ManagedCursor> mManagedCursors = 805 new ArrayList<ManagedCursor>(); 806 807 // protected by synchronized (this) 808 int mResultCode = RESULT_CANCELED; 809 Intent mResultData = null; 810 811 private TranslucentConversionListener mTranslucentCallback; 812 private boolean mChangeCanvasToTranslucent; 813 814 private SearchEvent mSearchEvent; 815 816 private boolean mTitleReady = false; 817 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 818 819 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 820 private SpannableStringBuilder mDefaultKeySsb = null; 821 822 private ActivityManager.TaskDescription mTaskDescription = 823 new ActivityManager.TaskDescription(); 824 825 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 826 827 @SuppressWarnings("unused") 828 private final Object mInstanceTracker = StrictMode.trackActivity(this); 829 830 private Thread mUiThread; 831 832 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 833 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 834 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 835 836 private boolean mHasCurrentPermissionsRequest; 837 private boolean mEatKeyUpEvent; 838 839 private static native String getDlWarning(); 840 841 /** Return the intent that started this activity. */ 842 public Intent getIntent() { 843 return mIntent; 844 } 845 846 /** 847 * Change the intent returned by {@link #getIntent}. This holds a 848 * reference to the given intent; it does not copy it. Often used in 849 * conjunction with {@link #onNewIntent}. 850 * 851 * @param newIntent The new Intent object to return from getIntent 852 * 853 * @see #getIntent 854 * @see #onNewIntent 855 */ 856 public void setIntent(Intent newIntent) { 857 mIntent = newIntent; 858 } 859 860 /** Return the application that owns this activity. */ 861 public final Application getApplication() { 862 return mApplication; 863 } 864 865 /** Is this activity embedded inside of another activity? */ 866 public final boolean isChild() { 867 return mParent != null; 868 } 869 870 /** Return the parent activity if this view is an embedded child. */ 871 public final Activity getParent() { 872 return mParent; 873 } 874 875 /** Retrieve the window manager for showing custom windows. */ 876 public WindowManager getWindowManager() { 877 return mWindowManager; 878 } 879 880 /** 881 * Retrieve the current {@link android.view.Window} for the activity. 882 * This can be used to directly access parts of the Window API that 883 * are not available through Activity/Screen. 884 * 885 * @return Window The current window, or null if the activity is not 886 * visual. 887 */ 888 public Window getWindow() { 889 return mWindow; 890 } 891 892 /** 893 * Return the LoaderManager for this activity, creating it if needed. 894 */ 895 public LoaderManager getLoaderManager() { 896 return mFragments.getLoaderManager(); 897 } 898 899 /** 900 * Calls {@link android.view.Window#getCurrentFocus} on the 901 * Window of this Activity to return the currently focused view. 902 * 903 * @return View The current View with focus or null. 904 * 905 * @see #getWindow 906 * @see android.view.Window#getCurrentFocus 907 */ 908 @Nullable 909 public View getCurrentFocus() { 910 return mWindow != null ? mWindow.getCurrentFocus() : null; 911 } 912 913 /** 914 * Called when the activity is starting. This is where most initialization 915 * should go: calling {@link #setContentView(int)} to inflate the 916 * activity's UI, using {@link #findViewById} to programmatically interact 917 * with widgets in the UI, calling 918 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 919 * cursors for data being displayed, etc. 920 * 921 * <p>You can call {@link #finish} from within this function, in 922 * which case onDestroy() will be immediately called without any of the rest 923 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 924 * {@link #onPause}, etc) executing. 925 * 926 * <p><em>Derived classes must call through to the super class's 927 * implementation of this method. If they do not, an exception will be 928 * thrown.</em></p> 929 * 930 * @param savedInstanceState If the activity is being re-initialized after 931 * previously being shut down then this Bundle contains the data it most 932 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 933 * 934 * @see #onStart 935 * @see #onSaveInstanceState 936 * @see #onRestoreInstanceState 937 * @see #onPostCreate 938 */ 939 @MainThread 940 @CallSuper 941 protected void onCreate(@Nullable Bundle savedInstanceState) { 942 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 943 if (mLastNonConfigurationInstances != null) { 944 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 945 } 946 if (mActivityInfo.parentActivityName != null) { 947 if (mActionBar == null) { 948 mEnableDefaultActionBarUp = true; 949 } else { 950 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 951 } 952 } 953 if (savedInstanceState != null) { 954 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 955 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 956 ? mLastNonConfigurationInstances.fragments : null); 957 } 958 mFragments.dispatchCreate(); 959 getApplication().dispatchActivityCreated(this, savedInstanceState); 960 if (mVoiceInteractor != null) { 961 mVoiceInteractor.attachActivity(this); 962 } 963 mCalled = true; 964 } 965 966 /** 967 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 968 * the attribute {@link android.R.attr#persistableMode} set to 969 * <code>persistAcrossReboots</code>. 970 * 971 * @param savedInstanceState if the activity is being re-initialized after 972 * previously being shut down then this Bundle contains the data it most 973 * recently supplied in {@link #onSaveInstanceState}. 974 * <b><i>Note: Otherwise it is null.</i></b> 975 * @param persistentState if the activity is being re-initialized after 976 * previously being shut down or powered off then this Bundle contains the data it most 977 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 978 * <b><i>Note: Otherwise it is null.</i></b> 979 * 980 * @see #onCreate(android.os.Bundle) 981 * @see #onStart 982 * @see #onSaveInstanceState 983 * @see #onRestoreInstanceState 984 * @see #onPostCreate 985 */ 986 public void onCreate(@Nullable Bundle savedInstanceState, 987 @Nullable PersistableBundle persistentState) { 988 onCreate(savedInstanceState); 989 } 990 991 /** 992 * The hook for {@link ActivityThread} to restore the state of this activity. 993 * 994 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 995 * {@link #restoreManagedDialogs(android.os.Bundle)}. 996 * 997 * @param savedInstanceState contains the saved state 998 */ 999 final void performRestoreInstanceState(Bundle savedInstanceState) { 1000 onRestoreInstanceState(savedInstanceState); 1001 restoreManagedDialogs(savedInstanceState); 1002 } 1003 1004 /** 1005 * The hook for {@link ActivityThread} to restore the state of this activity. 1006 * 1007 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1008 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1009 * 1010 * @param savedInstanceState contains the saved state 1011 * @param persistentState contains the persistable saved state 1012 */ 1013 final void performRestoreInstanceState(Bundle savedInstanceState, 1014 PersistableBundle persistentState) { 1015 onRestoreInstanceState(savedInstanceState, persistentState); 1016 if (savedInstanceState != null) { 1017 restoreManagedDialogs(savedInstanceState); 1018 } 1019 } 1020 1021 /** 1022 * This method is called after {@link #onStart} when the activity is 1023 * being re-initialized from a previously saved state, given here in 1024 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1025 * to restore their state, but it is sometimes convenient to do it here 1026 * after all of the initialization has been done or to allow subclasses to 1027 * decide whether to use your default implementation. The default 1028 * implementation of this method performs a restore of any view state that 1029 * had previously been frozen by {@link #onSaveInstanceState}. 1030 * 1031 * <p>This method is called between {@link #onStart} and 1032 * {@link #onPostCreate}. 1033 * 1034 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1035 * 1036 * @see #onCreate 1037 * @see #onPostCreate 1038 * @see #onResume 1039 * @see #onSaveInstanceState 1040 */ 1041 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1042 if (mWindow != null) { 1043 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1044 if (windowState != null) { 1045 mWindow.restoreHierarchyState(windowState); 1046 } 1047 } 1048 } 1049 1050 /** 1051 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1052 * created with the attribute {@link android.R.attr#persistableMode} set to 1053 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1054 * came from the restored PersistableBundle first 1055 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1056 * 1057 * <p>This method is called between {@link #onStart} and 1058 * {@link #onPostCreate}. 1059 * 1060 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1061 * 1062 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1063 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1064 * 1065 * @see #onRestoreInstanceState(Bundle) 1066 * @see #onCreate 1067 * @see #onPostCreate 1068 * @see #onResume 1069 * @see #onSaveInstanceState 1070 */ 1071 public void onRestoreInstanceState(Bundle savedInstanceState, 1072 PersistableBundle persistentState) { 1073 if (savedInstanceState != null) { 1074 onRestoreInstanceState(savedInstanceState); 1075 } 1076 } 1077 1078 /** 1079 * Restore the state of any saved managed dialogs. 1080 * 1081 * @param savedInstanceState The bundle to restore from. 1082 */ 1083 private void restoreManagedDialogs(Bundle savedInstanceState) { 1084 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1085 if (b == null) { 1086 return; 1087 } 1088 1089 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1090 final int numDialogs = ids.length; 1091 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1092 for (int i = 0; i < numDialogs; i++) { 1093 final Integer dialogId = ids[i]; 1094 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1095 if (dialogState != null) { 1096 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1097 // so tell createDialog() not to do it, otherwise we get an exception 1098 final ManagedDialog md = new ManagedDialog(); 1099 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1100 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1101 if (md.mDialog != null) { 1102 mManagedDialogs.put(dialogId, md); 1103 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1104 md.mDialog.onRestoreInstanceState(dialogState); 1105 } 1106 } 1107 } 1108 } 1109 1110 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1111 final Dialog dialog = onCreateDialog(dialogId, args); 1112 if (dialog == null) { 1113 return null; 1114 } 1115 dialog.dispatchOnCreate(state); 1116 return dialog; 1117 } 1118 1119 private static String savedDialogKeyFor(int key) { 1120 return SAVED_DIALOG_KEY_PREFIX + key; 1121 } 1122 1123 private static String savedDialogArgsKeyFor(int key) { 1124 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1125 } 1126 1127 /** 1128 * Called when activity start-up is complete (after {@link #onStart} 1129 * and {@link #onRestoreInstanceState} have been called). Applications will 1130 * generally not implement this method; it is intended for system 1131 * classes to do final initialization after application code has run. 1132 * 1133 * <p><em>Derived classes must call through to the super class's 1134 * implementation of this method. If they do not, an exception will be 1135 * thrown.</em></p> 1136 * 1137 * @param savedInstanceState If the activity is being re-initialized after 1138 * previously being shut down then this Bundle contains the data it most 1139 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1140 * @see #onCreate 1141 */ 1142 @CallSuper 1143 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1144 if (!isChild()) { 1145 mTitleReady = true; 1146 onTitleChanged(getTitle(), getTitleColor()); 1147 } 1148 1149 mCalled = true; 1150 } 1151 1152 /** 1153 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1154 * created with the attribute {@link android.R.attr#persistableMode} set to 1155 * <code>persistAcrossReboots</code>. 1156 * 1157 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1158 * @param persistentState The data caming from the PersistableBundle first 1159 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1160 * 1161 * @see #onCreate 1162 */ 1163 public void onPostCreate(@Nullable Bundle savedInstanceState, 1164 @Nullable PersistableBundle persistentState) { 1165 onPostCreate(savedInstanceState); 1166 } 1167 1168 /** 1169 * Called after {@link #onCreate} — or after {@link #onRestart} when 1170 * the activity had been stopped, but is now again being displayed to the 1171 * user. It will be followed by {@link #onResume}. 1172 * 1173 * <p><em>Derived classes must call through to the super class's 1174 * implementation of this method. If they do not, an exception will be 1175 * thrown.</em></p> 1176 * 1177 * @see #onCreate 1178 * @see #onStop 1179 * @see #onResume 1180 */ 1181 @CallSuper 1182 protected void onStart() { 1183 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1184 mCalled = true; 1185 1186 mFragments.doLoaderStart(); 1187 1188 getApplication().dispatchActivityStarted(this); 1189 } 1190 1191 /** 1192 * Called after {@link #onStop} when the current activity is being 1193 * re-displayed to the user (the user has navigated back to it). It will 1194 * be followed by {@link #onStart} and then {@link #onResume}. 1195 * 1196 * <p>For activities that are using raw {@link Cursor} objects (instead of 1197 * creating them through 1198 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1199 * this is usually the place 1200 * where the cursor should be requeried (because you had deactivated it in 1201 * {@link #onStop}. 1202 * 1203 * <p><em>Derived classes must call through to the super class's 1204 * implementation of this method. If they do not, an exception will be 1205 * thrown.</em></p> 1206 * 1207 * @see #onStop 1208 * @see #onStart 1209 * @see #onResume 1210 */ 1211 @CallSuper 1212 protected void onRestart() { 1213 mCalled = true; 1214 } 1215 1216 /** 1217 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1218 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1219 * to give the activity a hint that its state is no longer saved -- it will generally 1220 * be called after {@link #onSaveInstanceState} and prior to the activity being 1221 * resumed/started again. 1222 */ 1223 public void onStateNotSaved() { 1224 } 1225 1226 /** 1227 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1228 * {@link #onPause}, for your activity to start interacting with the user. 1229 * This is a good place to begin animations, open exclusive-access devices 1230 * (such as the camera), etc. 1231 * 1232 * <p>Keep in mind that onResume is not the best indicator that your activity 1233 * is visible to the user; a system window such as the keyguard may be in 1234 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1235 * activity is visible to the user (for example, to resume a game). 1236 * 1237 * <p><em>Derived classes must call through to the super class's 1238 * implementation of this method. If they do not, an exception will be 1239 * thrown.</em></p> 1240 * 1241 * @see #onRestoreInstanceState 1242 * @see #onRestart 1243 * @see #onPostResume 1244 * @see #onPause 1245 */ 1246 @CallSuper 1247 protected void onResume() { 1248 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1249 getApplication().dispatchActivityResumed(this); 1250 mActivityTransitionState.onResume(this, isTopOfTask()); 1251 mCalled = true; 1252 } 1253 1254 /** 1255 * Called when activity resume is complete (after {@link #onResume} has 1256 * been called). Applications will generally not implement this method; 1257 * it is intended for system classes to do final setup after application 1258 * resume code has run. 1259 * 1260 * <p><em>Derived classes must call through to the super class's 1261 * implementation of this method. If they do not, an exception will be 1262 * thrown.</em></p> 1263 * 1264 * @see #onResume 1265 */ 1266 @CallSuper 1267 protected void onPostResume() { 1268 final Window win = getWindow(); 1269 if (win != null) win.makeActive(); 1270 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1271 mCalled = true; 1272 } 1273 1274 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1275 if (mVoiceInteractor != null) { 1276 for (Request activeRequest: mVoiceInteractor.getActiveRequests()) { 1277 activeRequest.cancel(); 1278 activeRequest.clear(); 1279 } 1280 } 1281 if (voiceInteractor == null) { 1282 mVoiceInteractor = null; 1283 } else { 1284 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1285 Looper.myLooper()); 1286 } 1287 } 1288 1289 /** 1290 * Check whether this activity is running as part of a voice interaction with the user. 1291 * If true, it should perform its interaction with the user through the 1292 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1293 */ 1294 public boolean isVoiceInteraction() { 1295 return mVoiceInteractor != null; 1296 } 1297 1298 /** 1299 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1300 * of a voice interaction. That is, returns true if this activity was directly 1301 * started by the voice interaction service as the initiation of a voice interaction. 1302 * Otherwise, for example if it was started by another activity while under voice 1303 * interaction, returns false. 1304 */ 1305 public boolean isVoiceInteractionRoot() { 1306 try { 1307 return mVoiceInteractor != null 1308 && ActivityManagerNative.getDefault().isRootVoiceInteraction(mToken); 1309 } catch (RemoteException e) { 1310 } 1311 return false; 1312 } 1313 1314 /** 1315 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1316 * interact with this activity. 1317 */ 1318 public VoiceInteractor getVoiceInteractor() { 1319 return mVoiceInteractor; 1320 } 1321 1322 /** 1323 * Queries whether the currently enabled voice interaction service supports returning 1324 * a voice interactor for use by the activity. This is valid only for the duration of the 1325 * activity. 1326 * 1327 * @return whether the current voice interaction service supports local voice interaction 1328 */ 1329 public boolean isLocalVoiceInteractionSupported() { 1330 try { 1331 return ActivityManagerNative.getDefault().supportsLocalVoiceInteraction(); 1332 } catch (RemoteException re) { 1333 } 1334 return false; 1335 } 1336 1337 /** 1338 * Starts a local voice interaction session. When ready, 1339 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1340 * to the registered voice interaction service. 1341 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1342 */ 1343 public void startLocalVoiceInteraction(Bundle privateOptions) { 1344 try { 1345 ActivityManagerNative.getDefault().startLocalVoiceInteraction(mToken, privateOptions); 1346 } catch (RemoteException re) { 1347 } 1348 } 1349 1350 /** 1351 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1352 * voice interaction session being started. You can now retrieve a voice interactor using 1353 * {@link #getVoiceInteractor()}. 1354 */ 1355 public void onLocalVoiceInteractionStarted() { 1356 } 1357 1358 /** 1359 * Callback to indicate that the local voice interaction has stopped either 1360 * because it was requested through a call to {@link #stopLocalVoiceInteraction()} 1361 * or because it was canceled by the user. The previously acquired {@link VoiceInteractor} 1362 * is no longer valid after this. 1363 */ 1364 public void onLocalVoiceInteractionStopped() { 1365 } 1366 1367 /** 1368 * Request to terminate the current voice interaction that was previously started 1369 * using {@link #startLocalVoiceInteraction(Bundle)}. When the interaction is 1370 * terminated, {@link #onLocalVoiceInteractionStopped()} will be called. 1371 */ 1372 public void stopLocalVoiceInteraction() { 1373 try { 1374 ActivityManagerNative.getDefault().stopLocalVoiceInteraction(mToken); 1375 } catch (RemoteException re) { 1376 } 1377 } 1378 1379 /** 1380 * This is called for activities that set launchMode to "singleTop" in 1381 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1382 * flag when calling {@link #startActivity}. In either case, when the 1383 * activity is re-launched while at the top of the activity stack instead 1384 * of a new instance of the activity being started, onNewIntent() will be 1385 * called on the existing instance with the Intent that was used to 1386 * re-launch it. 1387 * 1388 * <p>An activity will always be paused before receiving a new intent, so 1389 * you can count on {@link #onResume} being called after this method. 1390 * 1391 * <p>Note that {@link #getIntent} still returns the original Intent. You 1392 * can use {@link #setIntent} to update it to this new Intent. 1393 * 1394 * @param intent The new intent that was started for the activity. 1395 * 1396 * @see #getIntent 1397 * @see #setIntent 1398 * @see #onResume 1399 */ 1400 protected void onNewIntent(Intent intent) { 1401 } 1402 1403 /** 1404 * The hook for {@link ActivityThread} to save the state of this activity. 1405 * 1406 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1407 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1408 * 1409 * @param outState The bundle to save the state to. 1410 */ 1411 final void performSaveInstanceState(Bundle outState) { 1412 onSaveInstanceState(outState); 1413 saveManagedDialogs(outState); 1414 mActivityTransitionState.saveState(outState); 1415 storeHasCurrentPermissionRequest(outState); 1416 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1417 } 1418 1419 /** 1420 * The hook for {@link ActivityThread} to save the state of this activity. 1421 * 1422 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1423 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1424 * 1425 * @param outState The bundle to save the state to. 1426 * @param outPersistentState The bundle to save persistent state to. 1427 */ 1428 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1429 onSaveInstanceState(outState, outPersistentState); 1430 saveManagedDialogs(outState); 1431 storeHasCurrentPermissionRequest(outState); 1432 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1433 ", " + outPersistentState); 1434 } 1435 1436 /** 1437 * Called to retrieve per-instance state from an activity before being killed 1438 * so that the state can be restored in {@link #onCreate} or 1439 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1440 * will be passed to both). 1441 * 1442 * <p>This method is called before an activity may be killed so that when it 1443 * comes back some time in the future it can restore its state. For example, 1444 * if activity B is launched in front of activity A, and at some point activity 1445 * A is killed to reclaim resources, activity A will have a chance to save the 1446 * current state of its user interface via this method so that when the user 1447 * returns to activity A, the state of the user interface can be restored 1448 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1449 * 1450 * <p>Do not confuse this method with activity lifecycle callbacks such as 1451 * {@link #onPause}, which is always called when an activity is being placed 1452 * in the background or on its way to destruction, or {@link #onStop} which 1453 * is called before destruction. One example of when {@link #onPause} and 1454 * {@link #onStop} is called and not this method is when a user navigates back 1455 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1456 * on B because that particular instance will never be restored, so the 1457 * system avoids calling it. An example when {@link #onPause} is called and 1458 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1459 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1460 * killed during the lifetime of B since the state of the user interface of 1461 * A will stay intact. 1462 * 1463 * <p>The default implementation takes care of most of the UI per-instance 1464 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1465 * view in the hierarchy that has an id, and by saving the id of the currently 1466 * focused view (all of which is restored by the default implementation of 1467 * {@link #onRestoreInstanceState}). If you override this method to save additional 1468 * information not captured by each individual view, you will likely want to 1469 * call through to the default implementation, otherwise be prepared to save 1470 * all of the state of each view yourself. 1471 * 1472 * <p>If called, this method will occur before {@link #onStop}. There are 1473 * no guarantees about whether it will occur before or after {@link #onPause}. 1474 * 1475 * @param outState Bundle in which to place your saved state. 1476 * 1477 * @see #onCreate 1478 * @see #onRestoreInstanceState 1479 * @see #onPause 1480 */ 1481 protected void onSaveInstanceState(Bundle outState) { 1482 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1483 Parcelable p = mFragments.saveAllState(); 1484 if (p != null) { 1485 outState.putParcelable(FRAGMENTS_TAG, p); 1486 } 1487 getApplication().dispatchActivitySaveInstanceState(this, outState); 1488 } 1489 1490 /** 1491 * This is the same as {@link #onSaveInstanceState} but is called for activities 1492 * created with the attribute {@link android.R.attr#persistableMode} set to 1493 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1494 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1495 * the first time that this activity is restarted following the next device reboot. 1496 * 1497 * @param outState Bundle in which to place your saved state. 1498 * @param outPersistentState State which will be saved across reboots. 1499 * 1500 * @see #onSaveInstanceState(Bundle) 1501 * @see #onCreate 1502 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1503 * @see #onPause 1504 */ 1505 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1506 onSaveInstanceState(outState); 1507 } 1508 1509 /** 1510 * Save the state of any managed dialogs. 1511 * 1512 * @param outState place to store the saved state. 1513 */ 1514 private void saveManagedDialogs(Bundle outState) { 1515 if (mManagedDialogs == null) { 1516 return; 1517 } 1518 1519 final int numDialogs = mManagedDialogs.size(); 1520 if (numDialogs == 0) { 1521 return; 1522 } 1523 1524 Bundle dialogState = new Bundle(); 1525 1526 int[] ids = new int[mManagedDialogs.size()]; 1527 1528 // save each dialog's bundle, gather the ids 1529 for (int i = 0; i < numDialogs; i++) { 1530 final int key = mManagedDialogs.keyAt(i); 1531 ids[i] = key; 1532 final ManagedDialog md = mManagedDialogs.valueAt(i); 1533 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1534 if (md.mArgs != null) { 1535 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1536 } 1537 } 1538 1539 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1540 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1541 } 1542 1543 1544 /** 1545 * Called as part of the activity lifecycle when an activity is going into 1546 * the background, but has not (yet) been killed. The counterpart to 1547 * {@link #onResume}. 1548 * 1549 * <p>When activity B is launched in front of activity A, this callback will 1550 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1551 * so be sure to not do anything lengthy here. 1552 * 1553 * <p>This callback is mostly used for saving any persistent state the 1554 * activity is editing, to present a "edit in place" model to the user and 1555 * making sure nothing is lost if there are not enough resources to start 1556 * the new activity without first killing this one. This is also a good 1557 * place to do things like stop animations and other things that consume a 1558 * noticeable amount of CPU in order to make the switch to the next activity 1559 * as fast as possible, or to close resources that are exclusive access 1560 * such as the camera. 1561 * 1562 * <p>In situations where the system needs more memory it may kill paused 1563 * processes to reclaim resources. Because of this, you should be sure 1564 * that all of your state is saved by the time you return from 1565 * this function. In general {@link #onSaveInstanceState} is used to save 1566 * per-instance state in the activity and this method is used to store 1567 * global persistent data (in content providers, files, etc.) 1568 * 1569 * <p>After receiving this call you will usually receive a following call 1570 * to {@link #onStop} (after the next activity has been resumed and 1571 * displayed), however in some cases there will be a direct call back to 1572 * {@link #onResume} without going through the stopped state. 1573 * 1574 * <p><em>Derived classes must call through to the super class's 1575 * implementation of this method. If they do not, an exception will be 1576 * thrown.</em></p> 1577 * 1578 * @see #onResume 1579 * @see #onSaveInstanceState 1580 * @see #onStop 1581 */ 1582 @CallSuper 1583 protected void onPause() { 1584 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1585 getApplication().dispatchActivityPaused(this); 1586 mCalled = true; 1587 } 1588 1589 /** 1590 * Called as part of the activity lifecycle when an activity is about to go 1591 * into the background as the result of user choice. For example, when the 1592 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1593 * when an incoming phone call causes the in-call Activity to be automatically 1594 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1595 * the activity being interrupted. In cases when it is invoked, this method 1596 * is called right before the activity's {@link #onPause} callback. 1597 * 1598 * <p>This callback and {@link #onUserInteraction} are intended to help 1599 * activities manage status bar notifications intelligently; specifically, 1600 * for helping activities determine the proper time to cancel a notfication. 1601 * 1602 * @see #onUserInteraction() 1603 */ 1604 protected void onUserLeaveHint() { 1605 } 1606 1607 /** 1608 * Generate a new thumbnail for this activity. This method is called before 1609 * pausing the activity, and should draw into <var>outBitmap</var> the 1610 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1611 * can use the given <var>canvas</var>, which is configured to draw into the 1612 * bitmap, for rendering if desired. 1613 * 1614 * <p>The default implementation returns fails and does not draw a thumbnail; 1615 * this will result in the platform creating its own thumbnail if needed. 1616 * 1617 * @param outBitmap The bitmap to contain the thumbnail. 1618 * @param canvas Can be used to render into the bitmap. 1619 * 1620 * @return Return true if you have drawn into the bitmap; otherwise after 1621 * you return it will be filled with a default thumbnail. 1622 * 1623 * @see #onCreateDescription 1624 * @see #onSaveInstanceState 1625 * @see #onPause 1626 */ 1627 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1628 return false; 1629 } 1630 1631 /** 1632 * Generate a new description for this activity. This method is called 1633 * before pausing the activity and can, if desired, return some textual 1634 * description of its current state to be displayed to the user. 1635 * 1636 * <p>The default implementation returns null, which will cause you to 1637 * inherit the description from the previous activity. If all activities 1638 * return null, generally the label of the top activity will be used as the 1639 * description. 1640 * 1641 * @return A description of what the user is doing. It should be short and 1642 * sweet (only a few words). 1643 * 1644 * @see #onCreateThumbnail 1645 * @see #onSaveInstanceState 1646 * @see #onPause 1647 */ 1648 @Nullable 1649 public CharSequence onCreateDescription() { 1650 return null; 1651 } 1652 1653 /** 1654 * This is called when the user is requesting an assist, to build a full 1655 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1656 * application. You can override this method to place into the bundle anything 1657 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1658 * of the assist Intent. 1659 * 1660 * <p>This function will be called after any global assist callbacks that had 1661 * been registered with {@link Application#registerOnProvideAssistDataListener 1662 * Application.registerOnProvideAssistDataListener}. 1663 */ 1664 public void onProvideAssistData(Bundle data) { 1665 } 1666 1667 /** 1668 * This is called when the user is requesting an assist, to provide references 1669 * to content related to the current activity. Before being called, the 1670 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1671 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1672 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1673 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1674 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1675 * 1676 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1677 * context of the activity, and fill in its ClipData with additional content of 1678 * interest that the user is currently viewing. For example, an image gallery application 1679 * that has launched in to an activity allowing the user to swipe through pictures should 1680 * modify the intent to reference the current image they are looking it; such an 1681 * application when showing a list of pictures should add a ClipData that has 1682 * references to all of the pictures currently visible on screen.</p> 1683 * 1684 * @param outContent The assist content to return. 1685 */ 1686 public void onProvideAssistContent(AssistContent outContent) { 1687 } 1688 1689 /** 1690 * Request the Keyboard Shortcuts screen to show up. This will trigger 1691 * {@link #onProvideKeyboardShortcuts} to retrieve the shortcuts for the foreground activity. 1692 */ 1693 public final void requestShowKeyboardShortcuts() { 1694 Intent intent = new Intent(Intent.ACTION_SHOW_KEYBOARD_SHORTCUTS); 1695 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1696 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1697 } 1698 1699 /** 1700 * Dismiss the Keyboard Shortcuts screen. 1701 */ 1702 public final void dismissKeyboardShortcutsHelper() { 1703 Intent intent = new Intent(Intent.ACTION_DISMISS_KEYBOARD_SHORTCUTS); 1704 intent.setPackage(KEYBOARD_SHORTCUTS_RECEIVER_PKG_NAME); 1705 sendBroadcastAsUser(intent, UserHandle.SYSTEM); 1706 } 1707 1708 @Override 1709 public void onProvideKeyboardShortcuts( 1710 List<KeyboardShortcutGroup> data, Menu menu, int deviceId) { 1711 if (menu == null) { 1712 return; 1713 } 1714 KeyboardShortcutGroup group = null; 1715 int menuSize = menu.size(); 1716 for (int i = 0; i < menuSize; ++i) { 1717 final MenuItem item = menu.getItem(i); 1718 final CharSequence title = item.getTitle(); 1719 final char alphaShortcut = item.getAlphabeticShortcut(); 1720 if (title != null && alphaShortcut != MIN_VALUE) { 1721 if (group == null) { 1722 final int resource = mApplication.getApplicationInfo().labelRes; 1723 group = new KeyboardShortcutGroup(resource != 0 ? getString(resource) : null); 1724 } 1725 group.addItem(new KeyboardShortcutInfo( 1726 title, alphaShortcut, KeyEvent.META_CTRL_ON)); 1727 } 1728 } 1729 if (group != null) { 1730 data.add(group); 1731 } 1732 } 1733 1734 /** 1735 * Ask to have the current assistant shown to the user. This only works if the calling 1736 * activity is the current foreground activity. It is the same as calling 1737 * {@link android.service.voice.VoiceInteractionService#showSession 1738 * VoiceInteractionService.showSession} and requesting all of the possible context. 1739 * The receiver will always see 1740 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1741 * @return Returns true if the assistant was successfully invoked, else false. For example 1742 * false will be returned if the caller is not the current top activity. 1743 */ 1744 public boolean showAssist(Bundle args) { 1745 try { 1746 return ActivityManagerNative.getDefault().showAssistFromActivity(mToken, args); 1747 } catch (RemoteException e) { 1748 } 1749 return false; 1750 } 1751 1752 /** 1753 * Called when you are no longer visible to the user. You will next 1754 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1755 * depending on later user activity. 1756 * 1757 * <p><em>Derived classes must call through to the super class's 1758 * implementation of this method. If they do not, an exception will be 1759 * thrown.</em></p> 1760 * 1761 * @see #onRestart 1762 * @see #onResume 1763 * @see #onSaveInstanceState 1764 * @see #onDestroy 1765 */ 1766 @CallSuper 1767 protected void onStop() { 1768 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1769 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1770 mActivityTransitionState.onStop(); 1771 getApplication().dispatchActivityStopped(this); 1772 mTranslucentCallback = null; 1773 mCalled = true; 1774 } 1775 1776 /** 1777 * Perform any final cleanup before an activity is destroyed. This can 1778 * happen either because the activity is finishing (someone called 1779 * {@link #finish} on it, or because the system is temporarily destroying 1780 * this instance of the activity to save space. You can distinguish 1781 * between these two scenarios with the {@link #isFinishing} method. 1782 * 1783 * <p><em>Note: do not count on this method being called as a place for 1784 * saving data! For example, if an activity is editing data in a content 1785 * provider, those edits should be committed in either {@link #onPause} or 1786 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1787 * free resources like threads that are associated with an activity, so 1788 * that a destroyed activity does not leave such things around while the 1789 * rest of its application is still running. There are situations where 1790 * the system will simply kill the activity's hosting process without 1791 * calling this method (or any others) in it, so it should not be used to 1792 * do things that are intended to remain around after the process goes 1793 * away. 1794 * 1795 * <p><em>Derived classes must call through to the super class's 1796 * implementation of this method. If they do not, an exception will be 1797 * thrown.</em></p> 1798 * 1799 * @see #onPause 1800 * @see #onStop 1801 * @see #finish 1802 * @see #isFinishing 1803 */ 1804 @CallSuper 1805 protected void onDestroy() { 1806 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1807 mCalled = true; 1808 1809 // dismiss any dialogs we are managing. 1810 if (mManagedDialogs != null) { 1811 final int numDialogs = mManagedDialogs.size(); 1812 for (int i = 0; i < numDialogs; i++) { 1813 final ManagedDialog md = mManagedDialogs.valueAt(i); 1814 if (md.mDialog.isShowing()) { 1815 md.mDialog.dismiss(); 1816 } 1817 } 1818 mManagedDialogs = null; 1819 } 1820 1821 // close any cursors we are managing. 1822 synchronized (mManagedCursors) { 1823 int numCursors = mManagedCursors.size(); 1824 for (int i = 0; i < numCursors; i++) { 1825 ManagedCursor c = mManagedCursors.get(i); 1826 if (c != null) { 1827 c.mCursor.close(); 1828 } 1829 } 1830 mManagedCursors.clear(); 1831 } 1832 1833 // Close any open search dialog 1834 if (mSearchManager != null) { 1835 mSearchManager.stopSearch(); 1836 } 1837 1838 if (mActionBar != null) { 1839 mActionBar.onDestroy(); 1840 } 1841 1842 getApplication().dispatchActivityDestroyed(this); 1843 } 1844 1845 /** 1846 * Report to the system that your app is now fully drawn, purely for diagnostic 1847 * purposes (calling it does not impact the visible behavior of the activity). 1848 * This is only used to help instrument application launch times, so that the 1849 * app can report when it is fully in a usable state; without this, the only thing 1850 * the system itself can determine is the point at which the activity's window 1851 * is <em>first</em> drawn and displayed. To participate in app launch time 1852 * measurement, you should always call this method after first launch (when 1853 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1854 * entirely drawn your UI and populated with all of the significant data. You 1855 * can safely call this method any time after first launch as well, in which case 1856 * it will simply be ignored. 1857 */ 1858 public void reportFullyDrawn() { 1859 if (mDoReportFullyDrawn) { 1860 mDoReportFullyDrawn = false; 1861 try { 1862 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1863 } catch (RemoteException e) { 1864 } 1865 } 1866 } 1867 1868 /** 1869 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1870 * visa-versa. 1871 * @see android.R.attr#resizeableActivity 1872 * 1873 * @param isInMultiWindowMode True if the activity is in multi-window mode. 1874 */ 1875 public void onMultiWindowModeChanged(boolean isInMultiWindowMode) { 1876 // Left deliberately empty. There should be no side effects if a direct 1877 // subclass of Activity does not call super. 1878 } 1879 1880 /** 1881 * Returns true if the activity is currently in multi-window mode. 1882 * @see android.R.attr#resizeableActivity 1883 * 1884 * @return True if the activity is in multi-window mode. 1885 */ 1886 public boolean isInMultiWindowMode() { 1887 try { 1888 return ActivityManagerNative.getDefault().isInMultiWindowMode(mToken); 1889 } catch (RemoteException e) { 1890 } 1891 return false; 1892 } 1893 1894 /** 1895 * Called by the system when the activity changes to and from picture-in-picture mode. 1896 * @see android.R.attr#supportsPictureInPicture 1897 * 1898 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 1899 */ 1900 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 1901 // Left deliberately empty. There should be no side effects if a direct 1902 // subclass of Activity does not call super. 1903 } 1904 1905 /** 1906 * Returns true if the activity is currently in picture-in-picture mode. 1907 * @see android.R.attr#supportsPictureInPicture 1908 * 1909 * @return True if the activity is in picture-in-picture mode. 1910 */ 1911 public boolean isInPictureInPictureMode() { 1912 try { 1913 return ActivityManagerNative.getDefault().isInPictureInPictureMode(mToken); 1914 } catch (RemoteException e) { 1915 } 1916 return false; 1917 } 1918 1919 /** 1920 * Puts the activity in picture-in-picture mode. 1921 * @see android.R.attr#supportsPictureInPicture 1922 */ 1923 public void enterPictureInPictureMode() { 1924 try { 1925 ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken); 1926 } catch (RemoteException e) { 1927 } 1928 } 1929 1930 /** 1931 * Called by the system when the device configuration changes while your 1932 * activity is running. Note that this will <em>only</em> be called if 1933 * you have selected configurations you would like to handle with the 1934 * {@link android.R.attr#configChanges} attribute in your manifest. If 1935 * any configuration change occurs that is not selected to be reported 1936 * by that attribute, then instead of reporting it the system will stop 1937 * and restart the activity (to have it launched with the new 1938 * configuration). 1939 * 1940 * <p>At the time that this function has been called, your Resources 1941 * object will have been updated to return resource values matching the 1942 * new configuration. 1943 * 1944 * @param newConfig The new device configuration. 1945 */ 1946 public void onConfigurationChanged(Configuration newConfig) { 1947 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1948 mCalled = true; 1949 1950 mFragments.dispatchConfigurationChanged(newConfig); 1951 1952 if (mWindow != null) { 1953 // Pass the configuration changed event to the window 1954 mWindow.onConfigurationChanged(newConfig); 1955 } 1956 1957 if (mActionBar != null) { 1958 // Do this last; the action bar will need to access 1959 // view changes from above. 1960 mActionBar.onConfigurationChanged(newConfig); 1961 } 1962 } 1963 1964 /** 1965 * If this activity is being destroyed because it can not handle a 1966 * configuration parameter being changed (and thus its 1967 * {@link #onConfigurationChanged(Configuration)} method is 1968 * <em>not</em> being called), then you can use this method to discover 1969 * the set of changes that have occurred while in the process of being 1970 * destroyed. Note that there is no guarantee that these will be 1971 * accurate (other changes could have happened at any time), so you should 1972 * only use this as an optimization hint. 1973 * 1974 * @return Returns a bit field of the configuration parameters that are 1975 * changing, as defined by the {@link android.content.res.Configuration} 1976 * class. 1977 */ 1978 public int getChangingConfigurations() { 1979 return mConfigChangeFlags; 1980 } 1981 1982 /** 1983 * Retrieve the non-configuration instance data that was previously 1984 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1985 * be available from the initial {@link #onCreate} and 1986 * {@link #onStart} calls to the new instance, allowing you to extract 1987 * any useful dynamic state from the previous instance. 1988 * 1989 * <p>Note that the data you retrieve here should <em>only</em> be used 1990 * as an optimization for handling configuration changes. You should always 1991 * be able to handle getting a null pointer back, and an activity must 1992 * still be able to restore itself to its previous state (through the 1993 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1994 * function returns null. 1995 * 1996 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 1997 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1998 * available on older platforms through the Android support libraries. 1999 * 2000 * @return the object previously returned by {@link #onRetainNonConfigurationInstance()} 2001 */ 2002 @Nullable 2003 public Object getLastNonConfigurationInstance() { 2004 return mLastNonConfigurationInstances != null 2005 ? mLastNonConfigurationInstances.activity : null; 2006 } 2007 2008 /** 2009 * Called by the system, as part of destroying an 2010 * activity due to a configuration change, when it is known that a new 2011 * instance will immediately be created for the new configuration. You 2012 * can return any object you like here, including the activity instance 2013 * itself, which can later be retrieved by calling 2014 * {@link #getLastNonConfigurationInstance()} in the new activity 2015 * instance. 2016 * 2017 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2018 * or later, consider instead using a {@link Fragment} with 2019 * {@link Fragment#setRetainInstance(boolean) 2020 * Fragment.setRetainInstance(boolean}.</em> 2021 * 2022 * <p>This function is called purely as an optimization, and you must 2023 * not rely on it being called. When it is called, a number of guarantees 2024 * will be made to help optimize configuration switching: 2025 * <ul> 2026 * <li> The function will be called between {@link #onStop} and 2027 * {@link #onDestroy}. 2028 * <li> A new instance of the activity will <em>always</em> be immediately 2029 * created after this one's {@link #onDestroy()} is called. In particular, 2030 * <em>no</em> messages will be dispatched during this time (when the returned 2031 * object does not have an activity to be associated with). 2032 * <li> The object you return here will <em>always</em> be available from 2033 * the {@link #getLastNonConfigurationInstance()} method of the following 2034 * activity instance as described there. 2035 * </ul> 2036 * 2037 * <p>These guarantees are designed so that an activity can use this API 2038 * to propagate extensive state from the old to new activity instance, from 2039 * loaded bitmaps, to network connections, to evenly actively running 2040 * threads. Note that you should <em>not</em> propagate any data that 2041 * may change based on the configuration, including any data loaded from 2042 * resources such as strings, layouts, or drawables. 2043 * 2044 * <p>The guarantee of no message handling during the switch to the next 2045 * activity simplifies use with active objects. For example if your retained 2046 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2047 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2048 * not be called from the call here until you execute the next instance's 2049 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2050 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2051 * running in a separate thread.) 2052 * 2053 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2054 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2055 * available on older platforms through the Android support libraries. 2056 * 2057 * @return any Object holding the desired state to propagate to the 2058 * next activity instance 2059 */ 2060 public Object onRetainNonConfigurationInstance() { 2061 return null; 2062 } 2063 2064 /** 2065 * Retrieve the non-configuration instance data that was previously 2066 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2067 * be available from the initial {@link #onCreate} and 2068 * {@link #onStart} calls to the new instance, allowing you to extract 2069 * any useful dynamic state from the previous instance. 2070 * 2071 * <p>Note that the data you retrieve here should <em>only</em> be used 2072 * as an optimization for handling configuration changes. You should always 2073 * be able to handle getting a null pointer back, and an activity must 2074 * still be able to restore itself to its previous state (through the 2075 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2076 * function returns null. 2077 * 2078 * @return Returns the object previously returned by 2079 * {@link #onRetainNonConfigurationChildInstances()} 2080 */ 2081 @Nullable 2082 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2083 return mLastNonConfigurationInstances != null 2084 ? mLastNonConfigurationInstances.children : null; 2085 } 2086 2087 /** 2088 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2089 * it should return either a mapping from child activity id strings to arbitrary objects, 2090 * or null. This method is intended to be used by Activity framework subclasses that control a 2091 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2092 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2093 */ 2094 @Nullable 2095 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2096 return null; 2097 } 2098 2099 NonConfigurationInstances retainNonConfigurationInstances() { 2100 Object activity = onRetainNonConfigurationInstance(); 2101 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2102 FragmentManagerNonConfig fragments = mFragments.retainNestedNonConfig(); 2103 2104 // We're already stopped but we've been asked to retain. 2105 // Our fragments are taken care of but we need to mark the loaders for retention. 2106 // In order to do this correctly we need to restart the loaders first before 2107 // handing them off to the next activity. 2108 mFragments.doLoaderStart(); 2109 mFragments.doLoaderStop(true); 2110 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2111 2112 if (activity == null && children == null && fragments == null && loaders == null 2113 && mVoiceInteractor == null) { 2114 return null; 2115 } 2116 2117 NonConfigurationInstances nci = new NonConfigurationInstances(); 2118 nci.activity = activity; 2119 nci.children = children; 2120 nci.fragments = fragments; 2121 nci.loaders = loaders; 2122 if (mVoiceInteractor != null) { 2123 mVoiceInteractor.retainInstance(); 2124 nci.voiceInteractor = mVoiceInteractor; 2125 } 2126 return nci; 2127 } 2128 2129 public void onLowMemory() { 2130 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2131 mCalled = true; 2132 mFragments.dispatchLowMemory(); 2133 } 2134 2135 public void onTrimMemory(int level) { 2136 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2137 mCalled = true; 2138 mFragments.dispatchTrimMemory(level); 2139 } 2140 2141 /** 2142 * Return the FragmentManager for interacting with fragments associated 2143 * with this activity. 2144 */ 2145 public FragmentManager getFragmentManager() { 2146 return mFragments.getFragmentManager(); 2147 } 2148 2149 /** 2150 * Called when a Fragment is being attached to this activity, immediately 2151 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2152 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2153 */ 2154 public void onAttachFragment(Fragment fragment) { 2155 } 2156 2157 /** 2158 * Wrapper around 2159 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2160 * that gives the resulting {@link Cursor} to call 2161 * {@link #startManagingCursor} so that the activity will manage its 2162 * lifecycle for you. 2163 * 2164 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2165 * or later, consider instead using {@link LoaderManager} instead, available 2166 * via {@link #getLoaderManager()}.</em> 2167 * 2168 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2169 * this method, because the activity will do that for you at the appropriate time. However, if 2170 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2171 * not</em> automatically close the cursor and, in that case, you must call 2172 * {@link Cursor#close()}.</p> 2173 * 2174 * @param uri The URI of the content provider to query. 2175 * @param projection List of columns to return. 2176 * @param selection SQL WHERE clause. 2177 * @param sortOrder SQL ORDER BY clause. 2178 * 2179 * @return The Cursor that was returned by query(). 2180 * 2181 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2182 * @see #startManagingCursor 2183 * @hide 2184 * 2185 * @deprecated Use {@link CursorLoader} instead. 2186 */ 2187 @Deprecated 2188 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2189 String sortOrder) { 2190 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2191 if (c != null) { 2192 startManagingCursor(c); 2193 } 2194 return c; 2195 } 2196 2197 /** 2198 * Wrapper around 2199 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2200 * that gives the resulting {@link Cursor} to call 2201 * {@link #startManagingCursor} so that the activity will manage its 2202 * lifecycle for you. 2203 * 2204 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2205 * or later, consider instead using {@link LoaderManager} instead, available 2206 * via {@link #getLoaderManager()}.</em> 2207 * 2208 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2209 * this method, because the activity will do that for you at the appropriate time. However, if 2210 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2211 * not</em> automatically close the cursor and, in that case, you must call 2212 * {@link Cursor#close()}.</p> 2213 * 2214 * @param uri The URI of the content provider to query. 2215 * @param projection List of columns to return. 2216 * @param selection SQL WHERE clause. 2217 * @param selectionArgs The arguments to selection, if any ?s are pesent 2218 * @param sortOrder SQL ORDER BY clause. 2219 * 2220 * @return The Cursor that was returned by query(). 2221 * 2222 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2223 * @see #startManagingCursor 2224 * 2225 * @deprecated Use {@link CursorLoader} instead. 2226 */ 2227 @Deprecated 2228 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2229 String[] selectionArgs, String sortOrder) { 2230 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2231 if (c != null) { 2232 startManagingCursor(c); 2233 } 2234 return c; 2235 } 2236 2237 /** 2238 * This method allows the activity to take care of managing the given 2239 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2240 * That is, when the activity is stopped it will automatically call 2241 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2242 * it will call {@link Cursor#requery} for you. When the activity is 2243 * destroyed, all managed Cursors will be closed automatically. 2244 * 2245 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2246 * or later, consider instead using {@link LoaderManager} instead, available 2247 * via {@link #getLoaderManager()}.</em> 2248 * 2249 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2250 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2251 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2252 * <em>will not</em> automatically close the cursor and, in that case, you must call 2253 * {@link Cursor#close()}.</p> 2254 * 2255 * @param c The Cursor to be managed. 2256 * 2257 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2258 * @see #stopManagingCursor 2259 * 2260 * @deprecated Use the new {@link android.content.CursorLoader} class with 2261 * {@link LoaderManager} instead; this is also 2262 * available on older platforms through the Android compatibility package. 2263 */ 2264 @Deprecated 2265 public void startManagingCursor(Cursor c) { 2266 synchronized (mManagedCursors) { 2267 mManagedCursors.add(new ManagedCursor(c)); 2268 } 2269 } 2270 2271 /** 2272 * Given a Cursor that was previously given to 2273 * {@link #startManagingCursor}, stop the activity's management of that 2274 * cursor. 2275 * 2276 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2277 * the system <em>will not</em> automatically close the cursor and you must call 2278 * {@link Cursor#close()}.</p> 2279 * 2280 * @param c The Cursor that was being managed. 2281 * 2282 * @see #startManagingCursor 2283 * 2284 * @deprecated Use the new {@link android.content.CursorLoader} class with 2285 * {@link LoaderManager} instead; this is also 2286 * available on older platforms through the Android compatibility package. 2287 */ 2288 @Deprecated 2289 public void stopManagingCursor(Cursor c) { 2290 synchronized (mManagedCursors) { 2291 final int N = mManagedCursors.size(); 2292 for (int i=0; i<N; i++) { 2293 ManagedCursor mc = mManagedCursors.get(i); 2294 if (mc.mCursor == c) { 2295 mManagedCursors.remove(i); 2296 break; 2297 } 2298 } 2299 } 2300 } 2301 2302 /** 2303 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2304 * this is a no-op. 2305 * @hide 2306 */ 2307 @Deprecated 2308 public void setPersistent(boolean isPersistent) { 2309 } 2310 2311 /** 2312 * Finds a view that was identified by the id attribute from the XML that 2313 * was processed in {@link #onCreate}. 2314 * 2315 * @return The view if found or null otherwise. 2316 */ 2317 @Nullable 2318 public View findViewById(@IdRes int id) { 2319 return getWindow().findViewById(id); 2320 } 2321 2322 /** 2323 * Retrieve a reference to this activity's ActionBar. 2324 * 2325 * @return The Activity's ActionBar, or null if it does not have one. 2326 */ 2327 @Nullable 2328 public ActionBar getActionBar() { 2329 initWindowDecorActionBar(); 2330 return mActionBar; 2331 } 2332 2333 /** 2334 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2335 * Activity window. 2336 * 2337 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2338 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2339 * a traditional window decor action bar. The toolbar's menu will be populated with the 2340 * Activity's options menu and the navigation button will be wired through the standard 2341 * {@link android.R.id#home home} menu select action.</p> 2342 * 2343 * <p>In order to use a Toolbar within the Activity's window content the application 2344 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2345 * 2346 * @param toolbar Toolbar to set as the Activity's action bar, or {@code null} to clear it 2347 */ 2348 public void setActionBar(@Nullable Toolbar toolbar) { 2349 final ActionBar ab = getActionBar(); 2350 if (ab instanceof WindowDecorActionBar) { 2351 throw new IllegalStateException("This Activity already has an action bar supplied " + 2352 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2353 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2354 } 2355 2356 // If we reach here then we're setting a new action bar 2357 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2358 mMenuInflater = null; 2359 2360 // If we have an action bar currently, destroy it 2361 if (ab != null) { 2362 ab.onDestroy(); 2363 } 2364 2365 if (toolbar != null) { 2366 final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2367 mActionBar = tbab; 2368 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2369 } else { 2370 mActionBar = null; 2371 // Re-set the original window callback since we may have already set a Toolbar wrapper 2372 mWindow.setCallback(this); 2373 } 2374 2375 invalidateOptionsMenu(); 2376 } 2377 2378 /** 2379 * Creates a new ActionBar, locates the inflated ActionBarView, 2380 * initializes the ActionBar with the view, and sets mActionBar. 2381 */ 2382 private void initWindowDecorActionBar() { 2383 Window window = getWindow(); 2384 2385 // Initializing the window decor can change window feature flags. 2386 // Make sure that we have the correct set before performing the test below. 2387 window.getDecorView(); 2388 2389 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2390 return; 2391 } 2392 2393 mActionBar = new WindowDecorActionBar(this); 2394 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2395 2396 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2397 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2398 } 2399 2400 /** 2401 * Set the activity content from a layout resource. The resource will be 2402 * inflated, adding all top-level views to the activity. 2403 * 2404 * @param layoutResID Resource ID to be inflated. 2405 * 2406 * @see #setContentView(android.view.View) 2407 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2408 */ 2409 public void setContentView(@LayoutRes int layoutResID) { 2410 getWindow().setContentView(layoutResID); 2411 initWindowDecorActionBar(); 2412 } 2413 2414 /** 2415 * Set the activity content to an explicit view. This view is placed 2416 * directly into the activity's view hierarchy. It can itself be a complex 2417 * view hierarchy. When calling this method, the layout parameters of the 2418 * specified view are ignored. Both the width and the height of the view are 2419 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2420 * your own layout parameters, invoke 2421 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2422 * instead. 2423 * 2424 * @param view The desired content to display. 2425 * 2426 * @see #setContentView(int) 2427 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2428 */ 2429 public void setContentView(View view) { 2430 getWindow().setContentView(view); 2431 initWindowDecorActionBar(); 2432 } 2433 2434 /** 2435 * Set the activity content to an explicit view. This view is placed 2436 * directly into the activity's view hierarchy. It can itself be a complex 2437 * view hierarchy. 2438 * 2439 * @param view The desired content to display. 2440 * @param params Layout parameters for the view. 2441 * 2442 * @see #setContentView(android.view.View) 2443 * @see #setContentView(int) 2444 */ 2445 public void setContentView(View view, ViewGroup.LayoutParams params) { 2446 getWindow().setContentView(view, params); 2447 initWindowDecorActionBar(); 2448 } 2449 2450 /** 2451 * Add an additional content view to the activity. Added after any existing 2452 * ones in the activity -- existing views are NOT removed. 2453 * 2454 * @param view The desired content to display. 2455 * @param params Layout parameters for the view. 2456 */ 2457 public void addContentView(View view, ViewGroup.LayoutParams params) { 2458 getWindow().addContentView(view, params); 2459 initWindowDecorActionBar(); 2460 } 2461 2462 /** 2463 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2464 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2465 * 2466 * <p>This method will return non-null after content has been initialized (e.g. by using 2467 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2468 * 2469 * @return This window's content TransitionManager or null if none is set. 2470 */ 2471 public TransitionManager getContentTransitionManager() { 2472 return getWindow().getTransitionManager(); 2473 } 2474 2475 /** 2476 * Set the {@link TransitionManager} to use for default transitions in this window. 2477 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2478 * 2479 * @param tm The TransitionManager to use for scene changes. 2480 */ 2481 public void setContentTransitionManager(TransitionManager tm) { 2482 getWindow().setTransitionManager(tm); 2483 } 2484 2485 /** 2486 * Retrieve the {@link Scene} representing this window's current content. 2487 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2488 * 2489 * <p>This method will return null if the current content is not represented by a Scene.</p> 2490 * 2491 * @return Current Scene being shown or null 2492 */ 2493 public Scene getContentScene() { 2494 return getWindow().getContentScene(); 2495 } 2496 2497 /** 2498 * Sets whether this activity is finished when touched outside its window's 2499 * bounds. 2500 */ 2501 public void setFinishOnTouchOutside(boolean finish) { 2502 mWindow.setCloseOnTouchOutside(finish); 2503 } 2504 2505 /** @hide */ 2506 @IntDef({ 2507 DEFAULT_KEYS_DISABLE, 2508 DEFAULT_KEYS_DIALER, 2509 DEFAULT_KEYS_SHORTCUT, 2510 DEFAULT_KEYS_SEARCH_LOCAL, 2511 DEFAULT_KEYS_SEARCH_GLOBAL}) 2512 @Retention(RetentionPolicy.SOURCE) 2513 @interface DefaultKeyMode {} 2514 2515 /** 2516 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2517 * keys. 2518 * 2519 * @see #setDefaultKeyMode 2520 */ 2521 static public final int DEFAULT_KEYS_DISABLE = 0; 2522 /** 2523 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2524 * key handling. 2525 * 2526 * @see #setDefaultKeyMode 2527 */ 2528 static public final int DEFAULT_KEYS_DIALER = 1; 2529 /** 2530 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2531 * default key handling. 2532 * 2533 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2534 * 2535 * @see #setDefaultKeyMode 2536 */ 2537 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2538 /** 2539 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2540 * will start an application-defined search. (If the application or activity does not 2541 * actually define a search, the the keys will be ignored.) 2542 * 2543 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2544 * 2545 * @see #setDefaultKeyMode 2546 */ 2547 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2548 2549 /** 2550 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2551 * will start a global search (typically web search, but some platforms may define alternate 2552 * methods for global search) 2553 * 2554 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2555 * 2556 * @see #setDefaultKeyMode 2557 */ 2558 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2559 2560 /** 2561 * Select the default key handling for this activity. This controls what 2562 * will happen to key events that are not otherwise handled. The default 2563 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2564 * floor. Other modes allow you to launch the dialer 2565 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2566 * menu without requiring the menu key be held down 2567 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2568 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2569 * 2570 * <p>Note that the mode selected here does not impact the default 2571 * handling of system keys, such as the "back" and "menu" keys, and your 2572 * activity and its views always get a first chance to receive and handle 2573 * all application keys. 2574 * 2575 * @param mode The desired default key mode constant. 2576 * 2577 * @see #DEFAULT_KEYS_DISABLE 2578 * @see #DEFAULT_KEYS_DIALER 2579 * @see #DEFAULT_KEYS_SHORTCUT 2580 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2581 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2582 * @see #onKeyDown 2583 */ 2584 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2585 mDefaultKeyMode = mode; 2586 2587 // Some modes use a SpannableStringBuilder to track & dispatch input events 2588 // This list must remain in sync with the switch in onKeyDown() 2589 switch (mode) { 2590 case DEFAULT_KEYS_DISABLE: 2591 case DEFAULT_KEYS_SHORTCUT: 2592 mDefaultKeySsb = null; // not used in these modes 2593 break; 2594 case DEFAULT_KEYS_DIALER: 2595 case DEFAULT_KEYS_SEARCH_LOCAL: 2596 case DEFAULT_KEYS_SEARCH_GLOBAL: 2597 mDefaultKeySsb = new SpannableStringBuilder(); 2598 Selection.setSelection(mDefaultKeySsb,0); 2599 break; 2600 default: 2601 throw new IllegalArgumentException(); 2602 } 2603 } 2604 2605 /** 2606 * Called when a key was pressed down and not handled by any of the views 2607 * inside of the activity. So, for example, key presses while the cursor 2608 * is inside a TextView will not trigger the event (unless it is a navigation 2609 * to another object) because TextView handles its own key presses. 2610 * 2611 * <p>If the focused view didn't want this event, this method is called. 2612 * 2613 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2614 * by calling {@link #onBackPressed()}, though the behavior varies based 2615 * on the application compatibility mode: for 2616 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2617 * it will set up the dispatch to call {@link #onKeyUp} where the action 2618 * will be performed; for earlier applications, it will perform the 2619 * action immediately in on-down, as those versions of the platform 2620 * behaved. 2621 * 2622 * <p>Other additional default key handling may be performed 2623 * if configured with {@link #setDefaultKeyMode}. 2624 * 2625 * @return Return <code>true</code> to prevent this event from being propagated 2626 * further, or <code>false</code> to indicate that you have not handled 2627 * this event and it should continue to be propagated. 2628 * @see #onKeyUp 2629 * @see android.view.KeyEvent 2630 */ 2631 public boolean onKeyDown(int keyCode, KeyEvent event) { 2632 if (keyCode == KeyEvent.KEYCODE_BACK) { 2633 if (getApplicationInfo().targetSdkVersion 2634 >= Build.VERSION_CODES.ECLAIR) { 2635 event.startTracking(); 2636 } else { 2637 onBackPressed(); 2638 } 2639 return true; 2640 } 2641 2642 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2643 return false; 2644 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2645 Window w = getWindow(); 2646 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2647 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2648 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2649 return true; 2650 } 2651 return false; 2652 } else { 2653 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2654 boolean clearSpannable = false; 2655 boolean handled; 2656 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2657 clearSpannable = true; 2658 handled = false; 2659 } else { 2660 handled = TextKeyListener.getInstance().onKeyDown( 2661 null, mDefaultKeySsb, keyCode, event); 2662 if (handled && mDefaultKeySsb.length() > 0) { 2663 // something useable has been typed - dispatch it now. 2664 2665 final String str = mDefaultKeySsb.toString(); 2666 clearSpannable = true; 2667 2668 switch (mDefaultKeyMode) { 2669 case DEFAULT_KEYS_DIALER: 2670 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2671 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2672 startActivity(intent); 2673 break; 2674 case DEFAULT_KEYS_SEARCH_LOCAL: 2675 startSearch(str, false, null, false); 2676 break; 2677 case DEFAULT_KEYS_SEARCH_GLOBAL: 2678 startSearch(str, false, null, true); 2679 break; 2680 } 2681 } 2682 } 2683 if (clearSpannable) { 2684 mDefaultKeySsb.clear(); 2685 mDefaultKeySsb.clearSpans(); 2686 Selection.setSelection(mDefaultKeySsb,0); 2687 } 2688 return handled; 2689 } 2690 } 2691 2692 /** 2693 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2694 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2695 * the event). 2696 */ 2697 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2698 return false; 2699 } 2700 2701 /** 2702 * Called when a key was released and not handled by any of the views 2703 * inside of the activity. So, for example, key presses while the cursor 2704 * is inside a TextView will not trigger the event (unless it is a navigation 2705 * to another object) because TextView handles its own key presses. 2706 * 2707 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2708 * and go back. 2709 * 2710 * @return Return <code>true</code> to prevent this event from being propagated 2711 * further, or <code>false</code> to indicate that you have not handled 2712 * this event and it should continue to be propagated. 2713 * @see #onKeyDown 2714 * @see KeyEvent 2715 */ 2716 public boolean onKeyUp(int keyCode, KeyEvent event) { 2717 if (getApplicationInfo().targetSdkVersion 2718 >= Build.VERSION_CODES.ECLAIR) { 2719 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2720 && !event.isCanceled()) { 2721 onBackPressed(); 2722 return true; 2723 } 2724 } 2725 return false; 2726 } 2727 2728 /** 2729 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2730 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2731 * the event). 2732 */ 2733 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2734 return false; 2735 } 2736 2737 /** 2738 * Called when the activity has detected the user's press of the back 2739 * key. The default implementation simply finishes the current activity, 2740 * but you can override this to do whatever you want. 2741 */ 2742 public void onBackPressed() { 2743 if (mActionBar != null && mActionBar.collapseActionView()) { 2744 return; 2745 } 2746 2747 if (!mFragments.getFragmentManager().popBackStackImmediate()) { 2748 finishAfterTransition(); 2749 } 2750 } 2751 2752 /** 2753 * Called when a key shortcut event is not handled by any of the views in the Activity. 2754 * Override this method to implement global key shortcuts for the Activity. 2755 * Key shortcuts can also be implemented by setting the 2756 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2757 * 2758 * @param keyCode The value in event.getKeyCode(). 2759 * @param event Description of the key event. 2760 * @return True if the key shortcut was handled. 2761 */ 2762 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2763 // Let the Action Bar have a chance at handling the shortcut. 2764 ActionBar actionBar = getActionBar(); 2765 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 2766 } 2767 2768 /** 2769 * Called when a touch screen event was not handled by any of the views 2770 * under it. This is most useful to process touch events that happen 2771 * outside of your window bounds, where there is no view to receive it. 2772 * 2773 * @param event The touch screen event being processed. 2774 * 2775 * @return Return true if you have consumed the event, false if you haven't. 2776 * The default implementation always returns false. 2777 */ 2778 public boolean onTouchEvent(MotionEvent event) { 2779 if (mWindow.shouldCloseOnTouch(this, event)) { 2780 finish(); 2781 return true; 2782 } 2783 2784 return false; 2785 } 2786 2787 /** 2788 * Called when the trackball was moved and not handled by any of the 2789 * views inside of the activity. So, for example, if the trackball moves 2790 * while focus is on a button, you will receive a call here because 2791 * buttons do not normally do anything with trackball events. The call 2792 * here happens <em>before</em> trackball movements are converted to 2793 * DPAD key events, which then get sent back to the view hierarchy, and 2794 * will be processed at the point for things like focus navigation. 2795 * 2796 * @param event The trackball event being processed. 2797 * 2798 * @return Return true if you have consumed the event, false if you haven't. 2799 * The default implementation always returns false. 2800 */ 2801 public boolean onTrackballEvent(MotionEvent event) { 2802 return false; 2803 } 2804 2805 /** 2806 * Called when a generic motion event was not handled by any of the 2807 * views inside of the activity. 2808 * <p> 2809 * Generic motion events describe joystick movements, mouse hovers, track pad 2810 * touches, scroll wheel movements and other input events. The 2811 * {@link MotionEvent#getSource() source} of the motion event specifies 2812 * the class of input that was received. Implementations of this method 2813 * must examine the bits in the source before processing the event. 2814 * The following code example shows how this is done. 2815 * </p><p> 2816 * Generic motion events with source class 2817 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2818 * are delivered to the view under the pointer. All other generic motion events are 2819 * delivered to the focused view. 2820 * </p><p> 2821 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2822 * handle this event. 2823 * </p> 2824 * 2825 * @param event The generic motion event being processed. 2826 * 2827 * @return Return true if you have consumed the event, false if you haven't. 2828 * The default implementation always returns false. 2829 */ 2830 public boolean onGenericMotionEvent(MotionEvent event) { 2831 return false; 2832 } 2833 2834 /** 2835 * Called whenever a key, touch, or trackball event is dispatched to the 2836 * activity. Implement this method if you wish to know that the user has 2837 * interacted with the device in some way while your activity is running. 2838 * This callback and {@link #onUserLeaveHint} are intended to help 2839 * activities manage status bar notifications intelligently; specifically, 2840 * for helping activities determine the proper time to cancel a notfication. 2841 * 2842 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2843 * be accompanied by calls to {@link #onUserInteraction}. This 2844 * ensures that your activity will be told of relevant user activity such 2845 * as pulling down the notification pane and touching an item there. 2846 * 2847 * <p>Note that this callback will be invoked for the touch down action 2848 * that begins a touch gesture, but may not be invoked for the touch-moved 2849 * and touch-up actions that follow. 2850 * 2851 * @see #onUserLeaveHint() 2852 */ 2853 public void onUserInteraction() { 2854 } 2855 2856 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2857 // Update window manager if: we have a view, that view is 2858 // attached to its parent (which will be a RootView), and 2859 // this activity is not embedded. 2860 if (mParent == null) { 2861 View decor = mDecor; 2862 if (decor != null && decor.getParent() != null) { 2863 getWindowManager().updateViewLayout(decor, params); 2864 } 2865 } 2866 } 2867 2868 public void onContentChanged() { 2869 } 2870 2871 /** 2872 * Called when the current {@link Window} of the activity gains or loses 2873 * focus. This is the best indicator of whether this activity is visible 2874 * to the user. The default implementation clears the key tracking 2875 * state, so should always be called. 2876 * 2877 * <p>Note that this provides information about global focus state, which 2878 * is managed independently of activity lifecycles. As such, while focus 2879 * changes will generally have some relation to lifecycle changes (an 2880 * activity that is stopped will not generally get window focus), you 2881 * should not rely on any particular order between the callbacks here and 2882 * those in the other lifecycle methods such as {@link #onResume}. 2883 * 2884 * <p>As a general rule, however, a resumed activity will have window 2885 * focus... unless it has displayed other dialogs or popups that take 2886 * input focus, in which case the activity itself will not have focus 2887 * when the other windows have it. Likewise, the system may display 2888 * system-level windows (such as the status bar notification panel or 2889 * a system alert) which will temporarily take window input focus without 2890 * pausing the foreground activity. 2891 * 2892 * @param hasFocus Whether the window of this activity has focus. 2893 * 2894 * @see #hasWindowFocus() 2895 * @see #onResume 2896 * @see View#onWindowFocusChanged(boolean) 2897 */ 2898 public void onWindowFocusChanged(boolean hasFocus) { 2899 } 2900 2901 /** 2902 * Called when the main window associated with the activity has been 2903 * attached to the window manager. 2904 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2905 * for more information. 2906 * @see View#onAttachedToWindow 2907 */ 2908 public void onAttachedToWindow() { 2909 } 2910 2911 /** 2912 * Called when the main window associated with the activity has been 2913 * detached from the window manager. 2914 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2915 * for more information. 2916 * @see View#onDetachedFromWindow 2917 */ 2918 public void onDetachedFromWindow() { 2919 } 2920 2921 /** 2922 * Returns true if this activity's <em>main</em> window currently has window focus. 2923 * Note that this is not the same as the view itself having focus. 2924 * 2925 * @return True if this activity's main window currently has window focus. 2926 * 2927 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2928 */ 2929 public boolean hasWindowFocus() { 2930 Window w = getWindow(); 2931 if (w != null) { 2932 View d = w.getDecorView(); 2933 if (d != null) { 2934 return d.hasWindowFocus(); 2935 } 2936 } 2937 return false; 2938 } 2939 2940 /** 2941 * Called when the main window associated with the activity has been dismissed. 2942 * @hide 2943 */ 2944 @Override 2945 public void onWindowDismissed(boolean finishTask) { 2946 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 2947 } 2948 2949 2950 /** 2951 * Moves the activity from 2952 * {@link android.app.ActivityManager.StackId#FREEFORM_WORKSPACE_STACK_ID} to 2953 * {@link android.app.ActivityManager.StackId#FULLSCREEN_WORKSPACE_STACK_ID} stack. 2954 * 2955 * @hide 2956 */ 2957 @Override 2958 public void exitFreeformMode() throws RemoteException { 2959 ActivityManagerNative.getDefault().exitFreeformMode(mToken); 2960 } 2961 2962 /** Returns the current stack Id for the window. 2963 * @hide 2964 */ 2965 @Override 2966 public int getWindowStackId() throws RemoteException { 2967 return ActivityManagerNative.getDefault().getActivityStackId(mToken); 2968 } 2969 2970 /** 2971 * Puts the activity in picture-in-picture mode if the activity supports. 2972 * @see android.R.attr#supportsPictureInPicture 2973 * @hide 2974 */ 2975 @Override 2976 public void enterPictureInPictureModeIfPossible() { 2977 if (mActivityInfo.resizeMode == ActivityInfo.RESIZE_MODE_RESIZEABLE_AND_PIPABLE) { 2978 enterPictureInPictureMode(); 2979 } 2980 } 2981 2982 /** 2983 * Called to process key events. You can override this to intercept all 2984 * key events before they are dispatched to the window. Be sure to call 2985 * this implementation for key events that should be handled normally. 2986 * 2987 * @param event The key event. 2988 * 2989 * @return boolean Return true if this event was consumed. 2990 */ 2991 public boolean dispatchKeyEvent(KeyEvent event) { 2992 onUserInteraction(); 2993 2994 // Let action bars open menus in response to the menu key prioritized over 2995 // the window handling it 2996 final int keyCode = event.getKeyCode(); 2997 if (keyCode == KeyEvent.KEYCODE_MENU && 2998 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2999 return true; 3000 } else if (event.isCtrlPressed() && 3001 event.getUnicodeChar(event.getMetaState() & ~KeyEvent.META_CTRL_MASK) == '<') { 3002 // Capture the Control-< and send focus to the ActionBar 3003 final int action = event.getAction(); 3004 if (action == KeyEvent.ACTION_DOWN) { 3005 final ActionBar actionBar = getActionBar(); 3006 if (actionBar != null && actionBar.isShowing() && actionBar.requestFocus()) { 3007 mEatKeyUpEvent = true; 3008 return true; 3009 } 3010 } else if (action == KeyEvent.ACTION_UP && mEatKeyUpEvent) { 3011 mEatKeyUpEvent = false; 3012 return true; 3013 } 3014 } 3015 3016 Window win = getWindow(); 3017 if (win.superDispatchKeyEvent(event)) { 3018 return true; 3019 } 3020 View decor = mDecor; 3021 if (decor == null) decor = win.getDecorView(); 3022 return event.dispatch(this, decor != null 3023 ? decor.getKeyDispatcherState() : null, this); 3024 } 3025 3026 /** 3027 * Called to process a key shortcut event. 3028 * You can override this to intercept all key shortcut events before they are 3029 * dispatched to the window. Be sure to call this implementation for key shortcut 3030 * events that should be handled normally. 3031 * 3032 * @param event The key shortcut event. 3033 * @return True if this event was consumed. 3034 */ 3035 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 3036 onUserInteraction(); 3037 if (getWindow().superDispatchKeyShortcutEvent(event)) { 3038 return true; 3039 } 3040 return onKeyShortcut(event.getKeyCode(), event); 3041 } 3042 3043 /** 3044 * Called to process touch screen events. You can override this to 3045 * intercept all touch screen events before they are dispatched to the 3046 * window. Be sure to call this implementation for touch screen events 3047 * that should be handled normally. 3048 * 3049 * @param ev The touch screen event. 3050 * 3051 * @return boolean Return true if this event was consumed. 3052 */ 3053 public boolean dispatchTouchEvent(MotionEvent ev) { 3054 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3055 onUserInteraction(); 3056 } 3057 if (getWindow().superDispatchTouchEvent(ev)) { 3058 return true; 3059 } 3060 return onTouchEvent(ev); 3061 } 3062 3063 /** 3064 * Called to process trackball events. You can override this to 3065 * intercept all trackball events before they are dispatched to the 3066 * window. Be sure to call this implementation for trackball events 3067 * that should be handled normally. 3068 * 3069 * @param ev The trackball event. 3070 * 3071 * @return boolean Return true if this event was consumed. 3072 */ 3073 public boolean dispatchTrackballEvent(MotionEvent ev) { 3074 onUserInteraction(); 3075 if (getWindow().superDispatchTrackballEvent(ev)) { 3076 return true; 3077 } 3078 return onTrackballEvent(ev); 3079 } 3080 3081 /** 3082 * Called to process generic motion events. You can override this to 3083 * intercept all generic motion events before they are dispatched to the 3084 * window. Be sure to call this implementation for generic motion events 3085 * that should be handled normally. 3086 * 3087 * @param ev The generic motion event. 3088 * 3089 * @return boolean Return true if this event was consumed. 3090 */ 3091 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3092 onUserInteraction(); 3093 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3094 return true; 3095 } 3096 return onGenericMotionEvent(ev); 3097 } 3098 3099 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3100 event.setClassName(getClass().getName()); 3101 event.setPackageName(getPackageName()); 3102 3103 LayoutParams params = getWindow().getAttributes(); 3104 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3105 (params.height == LayoutParams.MATCH_PARENT); 3106 event.setFullScreen(isFullScreen); 3107 3108 CharSequence title = getTitle(); 3109 if (!TextUtils.isEmpty(title)) { 3110 event.getText().add(title); 3111 } 3112 3113 return true; 3114 } 3115 3116 /** 3117 * Default implementation of 3118 * {@link android.view.Window.Callback#onCreatePanelView} 3119 * for activities. This 3120 * simply returns null so that all panel sub-windows will have the default 3121 * menu behavior. 3122 */ 3123 @Nullable 3124 public View onCreatePanelView(int featureId) { 3125 return null; 3126 } 3127 3128 /** 3129 * Default implementation of 3130 * {@link android.view.Window.Callback#onCreatePanelMenu} 3131 * for activities. This calls through to the new 3132 * {@link #onCreateOptionsMenu} method for the 3133 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3134 * so that subclasses of Activity don't need to deal with feature codes. 3135 */ 3136 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3137 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3138 boolean show = onCreateOptionsMenu(menu); 3139 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3140 return show; 3141 } 3142 return false; 3143 } 3144 3145 /** 3146 * Default implementation of 3147 * {@link android.view.Window.Callback#onPreparePanel} 3148 * for activities. This 3149 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3150 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3151 * panel, so that subclasses of 3152 * Activity don't need to deal with feature codes. 3153 */ 3154 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3155 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3156 boolean goforit = onPrepareOptionsMenu(menu); 3157 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3158 return goforit; 3159 } 3160 return true; 3161 } 3162 3163 /** 3164 * {@inheritDoc} 3165 * 3166 * @return The default implementation returns true. 3167 */ 3168 public boolean onMenuOpened(int featureId, Menu menu) { 3169 if (featureId == Window.FEATURE_ACTION_BAR) { 3170 initWindowDecorActionBar(); 3171 if (mActionBar != null) { 3172 mActionBar.dispatchMenuVisibilityChanged(true); 3173 } else { 3174 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3175 } 3176 } 3177 return true; 3178 } 3179 3180 /** 3181 * Default implementation of 3182 * {@link android.view.Window.Callback#onMenuItemSelected} 3183 * for activities. This calls through to the new 3184 * {@link #onOptionsItemSelected} method for the 3185 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3186 * panel, so that subclasses of 3187 * Activity don't need to deal with feature codes. 3188 */ 3189 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3190 CharSequence titleCondensed = item.getTitleCondensed(); 3191 3192 switch (featureId) { 3193 case Window.FEATURE_OPTIONS_PANEL: 3194 // Put event logging here so it gets called even if subclass 3195 // doesn't call through to superclass's implmeentation of each 3196 // of these methods below 3197 if(titleCondensed != null) { 3198 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3199 } 3200 if (onOptionsItemSelected(item)) { 3201 return true; 3202 } 3203 if (mFragments.dispatchOptionsItemSelected(item)) { 3204 return true; 3205 } 3206 if (item.getItemId() == android.R.id.home && mActionBar != null && 3207 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3208 if (mParent == null) { 3209 return onNavigateUp(); 3210 } else { 3211 return mParent.onNavigateUpFromChild(this); 3212 } 3213 } 3214 return false; 3215 3216 case Window.FEATURE_CONTEXT_MENU: 3217 if(titleCondensed != null) { 3218 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3219 } 3220 if (onContextItemSelected(item)) { 3221 return true; 3222 } 3223 return mFragments.dispatchContextItemSelected(item); 3224 3225 default: 3226 return false; 3227 } 3228 } 3229 3230 /** 3231 * Default implementation of 3232 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3233 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3234 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3235 * so that subclasses of Activity don't need to deal with feature codes. 3236 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3237 * {@link #onContextMenuClosed(Menu)} will be called. 3238 */ 3239 public void onPanelClosed(int featureId, Menu menu) { 3240 switch (featureId) { 3241 case Window.FEATURE_OPTIONS_PANEL: 3242 mFragments.dispatchOptionsMenuClosed(menu); 3243 onOptionsMenuClosed(menu); 3244 break; 3245 3246 case Window.FEATURE_CONTEXT_MENU: 3247 onContextMenuClosed(menu); 3248 break; 3249 3250 case Window.FEATURE_ACTION_BAR: 3251 initWindowDecorActionBar(); 3252 mActionBar.dispatchMenuVisibilityChanged(false); 3253 break; 3254 } 3255 } 3256 3257 /** 3258 * Declare that the options menu has changed, so should be recreated. 3259 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3260 * time it needs to be displayed. 3261 */ 3262 public void invalidateOptionsMenu() { 3263 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3264 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3265 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3266 } 3267 } 3268 3269 /** 3270 * Initialize the contents of the Activity's standard options menu. You 3271 * should place your menu items in to <var>menu</var>. 3272 * 3273 * <p>This is only called once, the first time the options menu is 3274 * displayed. To update the menu every time it is displayed, see 3275 * {@link #onPrepareOptionsMenu}. 3276 * 3277 * <p>The default implementation populates the menu with standard system 3278 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3279 * they will be correctly ordered with application-defined menu items. 3280 * Deriving classes should always call through to the base implementation. 3281 * 3282 * <p>You can safely hold on to <var>menu</var> (and any items created 3283 * from it), making modifications to it as desired, until the next 3284 * time onCreateOptionsMenu() is called. 3285 * 3286 * <p>When you add items to the menu, you can implement the Activity's 3287 * {@link #onOptionsItemSelected} method to handle them there. 3288 * 3289 * @param menu The options menu in which you place your items. 3290 * 3291 * @return You must return true for the menu to be displayed; 3292 * if you return false it will not be shown. 3293 * 3294 * @see #onPrepareOptionsMenu 3295 * @see #onOptionsItemSelected 3296 */ 3297 public boolean onCreateOptionsMenu(Menu menu) { 3298 if (mParent != null) { 3299 return mParent.onCreateOptionsMenu(menu); 3300 } 3301 return true; 3302 } 3303 3304 /** 3305 * Prepare the Screen's standard options menu to be displayed. This is 3306 * called right before the menu is shown, every time it is shown. You can 3307 * use this method to efficiently enable/disable items or otherwise 3308 * dynamically modify the contents. 3309 * 3310 * <p>The default implementation updates the system menu items based on the 3311 * activity's state. Deriving classes should always call through to the 3312 * base class implementation. 3313 * 3314 * @param menu The options menu as last shown or first initialized by 3315 * onCreateOptionsMenu(). 3316 * 3317 * @return You must return true for the menu to be displayed; 3318 * if you return false it will not be shown. 3319 * 3320 * @see #onCreateOptionsMenu 3321 */ 3322 public boolean onPrepareOptionsMenu(Menu menu) { 3323 if (mParent != null) { 3324 return mParent.onPrepareOptionsMenu(menu); 3325 } 3326 return true; 3327 } 3328 3329 /** 3330 * This hook is called whenever an item in your options menu is selected. 3331 * The default implementation simply returns false to have the normal 3332 * processing happen (calling the item's Runnable or sending a message to 3333 * its Handler as appropriate). You can use this method for any items 3334 * for which you would like to do processing without those other 3335 * facilities. 3336 * 3337 * <p>Derived classes should call through to the base class for it to 3338 * perform the default menu handling.</p> 3339 * 3340 * @param item The menu item that was selected. 3341 * 3342 * @return boolean Return false to allow normal menu processing to 3343 * proceed, true to consume it here. 3344 * 3345 * @see #onCreateOptionsMenu 3346 */ 3347 public boolean onOptionsItemSelected(MenuItem item) { 3348 if (mParent != null) { 3349 return mParent.onOptionsItemSelected(item); 3350 } 3351 return false; 3352 } 3353 3354 /** 3355 * This method is called whenever the user chooses to navigate Up within your application's 3356 * activity hierarchy from the action bar. 3357 * 3358 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3359 * was specified in the manifest for this activity or an activity-alias to it, 3360 * default Up navigation will be handled automatically. If any activity 3361 * along the parent chain requires extra Intent arguments, the Activity subclass 3362 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3363 * to supply those arguments.</p> 3364 * 3365 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3366 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3367 * from the design guide for more information about navigating within your app.</p> 3368 * 3369 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3370 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3371 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3372 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3373 * 3374 * @return true if Up navigation completed successfully and this Activity was finished, 3375 * false otherwise. 3376 */ 3377 public boolean onNavigateUp() { 3378 // Automatically handle hierarchical Up navigation if the proper 3379 // metadata is available. 3380 Intent upIntent = getParentActivityIntent(); 3381 if (upIntent != null) { 3382 if (mActivityInfo.taskAffinity == null) { 3383 // Activities with a null affinity are special; they really shouldn't 3384 // specify a parent activity intent in the first place. Just finish 3385 // the current activity and call it a day. 3386 finish(); 3387 } else if (shouldUpRecreateTask(upIntent)) { 3388 TaskStackBuilder b = TaskStackBuilder.create(this); 3389 onCreateNavigateUpTaskStack(b); 3390 onPrepareNavigateUpTaskStack(b); 3391 b.startActivities(); 3392 3393 // We can't finishAffinity if we have a result. 3394 // Fall back and simply finish the current activity instead. 3395 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3396 // Tell the developer what's going on to avoid hair-pulling. 3397 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3398 finish(); 3399 } else { 3400 finishAffinity(); 3401 } 3402 } else { 3403 navigateUpTo(upIntent); 3404 } 3405 return true; 3406 } 3407 return false; 3408 } 3409 3410 /** 3411 * This is called when a child activity of this one attempts to navigate up. 3412 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3413 * 3414 * @param child The activity making the call. 3415 */ 3416 public boolean onNavigateUpFromChild(Activity child) { 3417 return onNavigateUp(); 3418 } 3419 3420 /** 3421 * Define the synthetic task stack that will be generated during Up navigation from 3422 * a different task. 3423 * 3424 * <p>The default implementation of this method adds the parent chain of this activity 3425 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3426 * may choose to override this method to construct the desired task stack in a different 3427 * way.</p> 3428 * 3429 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3430 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3431 * returned by {@link #getParentActivityIntent()}.</p> 3432 * 3433 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3434 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3435 * 3436 * @param builder An empty TaskStackBuilder - the application should add intents representing 3437 * the desired task stack 3438 */ 3439 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3440 builder.addParentStack(this); 3441 } 3442 3443 /** 3444 * Prepare the synthetic task stack that will be generated during Up navigation 3445 * from a different task. 3446 * 3447 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3448 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3449 * If any extra data should be added to these intents before launching the new task, 3450 * the application should override this method and add that data here.</p> 3451 * 3452 * @param builder A TaskStackBuilder that has been populated with Intents by 3453 * onCreateNavigateUpTaskStack. 3454 */ 3455 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3456 } 3457 3458 /** 3459 * This hook is called whenever the options menu is being closed (either by the user canceling 3460 * the menu with the back/menu button, or when an item is selected). 3461 * 3462 * @param menu The options menu as last shown or first initialized by 3463 * onCreateOptionsMenu(). 3464 */ 3465 public void onOptionsMenuClosed(Menu menu) { 3466 if (mParent != null) { 3467 mParent.onOptionsMenuClosed(menu); 3468 } 3469 } 3470 3471 /** 3472 * Programmatically opens the options menu. If the options menu is already 3473 * open, this method does nothing. 3474 */ 3475 public void openOptionsMenu() { 3476 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3477 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3478 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3479 } 3480 } 3481 3482 /** 3483 * Progammatically closes the options menu. If the options menu is already 3484 * closed, this method does nothing. 3485 */ 3486 public void closeOptionsMenu() { 3487 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL)) { 3488 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3489 } 3490 } 3491 3492 /** 3493 * Called when a context menu for the {@code view} is about to be shown. 3494 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3495 * time the context menu is about to be shown and should be populated for 3496 * the view (or item inside the view for {@link AdapterView} subclasses, 3497 * this can be found in the {@code menuInfo})). 3498 * <p> 3499 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3500 * item has been selected. 3501 * <p> 3502 * It is not safe to hold onto the context menu after this method returns. 3503 * 3504 */ 3505 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3506 } 3507 3508 /** 3509 * Registers a context menu to be shown for the given view (multiple views 3510 * can show the context menu). This method will set the 3511 * {@link OnCreateContextMenuListener} on the view to this activity, so 3512 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3513 * called when it is time to show the context menu. 3514 * 3515 * @see #unregisterForContextMenu(View) 3516 * @param view The view that should show a context menu. 3517 */ 3518 public void registerForContextMenu(View view) { 3519 view.setOnCreateContextMenuListener(this); 3520 } 3521 3522 /** 3523 * Prevents a context menu to be shown for the given view. This method will remove the 3524 * {@link OnCreateContextMenuListener} on the view. 3525 * 3526 * @see #registerForContextMenu(View) 3527 * @param view The view that should stop showing a context menu. 3528 */ 3529 public void unregisterForContextMenu(View view) { 3530 view.setOnCreateContextMenuListener(null); 3531 } 3532 3533 /** 3534 * Programmatically opens the context menu for a particular {@code view}. 3535 * The {@code view} should have been added via 3536 * {@link #registerForContextMenu(View)}. 3537 * 3538 * @param view The view to show the context menu for. 3539 */ 3540 public void openContextMenu(View view) { 3541 view.showContextMenu(); 3542 } 3543 3544 /** 3545 * Programmatically closes the most recently opened context menu, if showing. 3546 */ 3547 public void closeContextMenu() { 3548 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3549 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3550 } 3551 } 3552 3553 /** 3554 * This hook is called whenever an item in a context menu is selected. The 3555 * default implementation simply returns false to have the normal processing 3556 * happen (calling the item's Runnable or sending a message to its Handler 3557 * as appropriate). You can use this method for any items for which you 3558 * would like to do processing without those other facilities. 3559 * <p> 3560 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3561 * View that added this menu item. 3562 * <p> 3563 * Derived classes should call through to the base class for it to perform 3564 * the default menu handling. 3565 * 3566 * @param item The context menu item that was selected. 3567 * @return boolean Return false to allow normal context menu processing to 3568 * proceed, true to consume it here. 3569 */ 3570 public boolean onContextItemSelected(MenuItem item) { 3571 if (mParent != null) { 3572 return mParent.onContextItemSelected(item); 3573 } 3574 return false; 3575 } 3576 3577 /** 3578 * This hook is called whenever the context menu is being closed (either by 3579 * the user canceling the menu with the back/menu button, or when an item is 3580 * selected). 3581 * 3582 * @param menu The context menu that is being closed. 3583 */ 3584 public void onContextMenuClosed(Menu menu) { 3585 if (mParent != null) { 3586 mParent.onContextMenuClosed(menu); 3587 } 3588 } 3589 3590 /** 3591 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3592 */ 3593 @Deprecated 3594 protected Dialog onCreateDialog(int id) { 3595 return null; 3596 } 3597 3598 /** 3599 * Callback for creating dialogs that are managed (saved and restored) for you 3600 * by the activity. The default implementation calls through to 3601 * {@link #onCreateDialog(int)} for compatibility. 3602 * 3603 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3604 * or later, consider instead using a {@link DialogFragment} instead.</em> 3605 * 3606 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3607 * this method the first time, and hang onto it thereafter. Any dialog 3608 * that is created by this method will automatically be saved and restored 3609 * for you, including whether it is showing. 3610 * 3611 * <p>If you would like the activity to manage saving and restoring dialogs 3612 * for you, you should override this method and handle any ids that are 3613 * passed to {@link #showDialog}. 3614 * 3615 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3616 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3617 * 3618 * @param id The id of the dialog. 3619 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3620 * @return The dialog. If you return null, the dialog will not be created. 3621 * 3622 * @see #onPrepareDialog(int, Dialog, Bundle) 3623 * @see #showDialog(int, Bundle) 3624 * @see #dismissDialog(int) 3625 * @see #removeDialog(int) 3626 * 3627 * @deprecated Use the new {@link DialogFragment} class with 3628 * {@link FragmentManager} instead; this is also 3629 * available on older platforms through the Android compatibility package. 3630 */ 3631 @Nullable 3632 @Deprecated 3633 protected Dialog onCreateDialog(int id, Bundle args) { 3634 return onCreateDialog(id); 3635 } 3636 3637 /** 3638 * @deprecated Old no-arguments version of 3639 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3640 */ 3641 @Deprecated 3642 protected void onPrepareDialog(int id, Dialog dialog) { 3643 dialog.setOwnerActivity(this); 3644 } 3645 3646 /** 3647 * Provides an opportunity to prepare a managed dialog before it is being 3648 * shown. The default implementation calls through to 3649 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3650 * 3651 * <p> 3652 * Override this if you need to update a managed dialog based on the state 3653 * of the application each time it is shown. For example, a time picker 3654 * dialog might want to be updated with the current time. You should call 3655 * through to the superclass's implementation. The default implementation 3656 * will set this Activity as the owner activity on the Dialog. 3657 * 3658 * @param id The id of the managed dialog. 3659 * @param dialog The dialog. 3660 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3661 * @see #onCreateDialog(int, Bundle) 3662 * @see #showDialog(int) 3663 * @see #dismissDialog(int) 3664 * @see #removeDialog(int) 3665 * 3666 * @deprecated Use the new {@link DialogFragment} class with 3667 * {@link FragmentManager} instead; this is also 3668 * available on older platforms through the Android compatibility package. 3669 */ 3670 @Deprecated 3671 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3672 onPrepareDialog(id, dialog); 3673 } 3674 3675 /** 3676 * Simple version of {@link #showDialog(int, Bundle)} that does not 3677 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3678 * with null arguments. 3679 * 3680 * @deprecated Use the new {@link DialogFragment} class with 3681 * {@link FragmentManager} instead; this is also 3682 * available on older platforms through the Android compatibility package. 3683 */ 3684 @Deprecated 3685 public final void showDialog(int id) { 3686 showDialog(id, null); 3687 } 3688 3689 /** 3690 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3691 * will be made with the same id the first time this is called for a given 3692 * id. From thereafter, the dialog will be automatically saved and restored. 3693 * 3694 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3695 * or later, consider instead using a {@link DialogFragment} instead.</em> 3696 * 3697 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3698 * be made to provide an opportunity to do any timely preparation. 3699 * 3700 * @param id The id of the managed dialog. 3701 * @param args Arguments to pass through to the dialog. These will be saved 3702 * and restored for you. Note that if the dialog is already created, 3703 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3704 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3705 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3706 * @return Returns true if the Dialog was created; false is returned if 3707 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3708 * 3709 * @see Dialog 3710 * @see #onCreateDialog(int, Bundle) 3711 * @see #onPrepareDialog(int, Dialog, Bundle) 3712 * @see #dismissDialog(int) 3713 * @see #removeDialog(int) 3714 * 3715 * @deprecated Use the new {@link DialogFragment} class with 3716 * {@link FragmentManager} instead; this is also 3717 * available on older platforms through the Android compatibility package. 3718 */ 3719 @Deprecated 3720 public final boolean showDialog(int id, Bundle args) { 3721 if (mManagedDialogs == null) { 3722 mManagedDialogs = new SparseArray<ManagedDialog>(); 3723 } 3724 ManagedDialog md = mManagedDialogs.get(id); 3725 if (md == null) { 3726 md = new ManagedDialog(); 3727 md.mDialog = createDialog(id, null, args); 3728 if (md.mDialog == null) { 3729 return false; 3730 } 3731 mManagedDialogs.put(id, md); 3732 } 3733 3734 md.mArgs = args; 3735 onPrepareDialog(id, md.mDialog, args); 3736 md.mDialog.show(); 3737 return true; 3738 } 3739 3740 /** 3741 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3742 * 3743 * @param id The id of the managed dialog. 3744 * 3745 * @throws IllegalArgumentException if the id was not previously shown via 3746 * {@link #showDialog(int)}. 3747 * 3748 * @see #onCreateDialog(int, Bundle) 3749 * @see #onPrepareDialog(int, Dialog, Bundle) 3750 * @see #showDialog(int) 3751 * @see #removeDialog(int) 3752 * 3753 * @deprecated Use the new {@link DialogFragment} class with 3754 * {@link FragmentManager} instead; this is also 3755 * available on older platforms through the Android compatibility package. 3756 */ 3757 @Deprecated 3758 public final void dismissDialog(int id) { 3759 if (mManagedDialogs == null) { 3760 throw missingDialog(id); 3761 } 3762 3763 final ManagedDialog md = mManagedDialogs.get(id); 3764 if (md == null) { 3765 throw missingDialog(id); 3766 } 3767 md.mDialog.dismiss(); 3768 } 3769 3770 /** 3771 * Creates an exception to throw if a user passed in a dialog id that is 3772 * unexpected. 3773 */ 3774 private IllegalArgumentException missingDialog(int id) { 3775 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3776 + "shown via Activity#showDialog"); 3777 } 3778 3779 /** 3780 * Removes any internal references to a dialog managed by this Activity. 3781 * If the dialog is showing, it will dismiss it as part of the clean up. 3782 * 3783 * <p>This can be useful if you know that you will never show a dialog again and 3784 * want to avoid the overhead of saving and restoring it in the future. 3785 * 3786 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3787 * will not throw an exception if you try to remove an ID that does not 3788 * currently have an associated dialog.</p> 3789 * 3790 * @param id The id of the managed dialog. 3791 * 3792 * @see #onCreateDialog(int, Bundle) 3793 * @see #onPrepareDialog(int, Dialog, Bundle) 3794 * @see #showDialog(int) 3795 * @see #dismissDialog(int) 3796 * 3797 * @deprecated Use the new {@link DialogFragment} class with 3798 * {@link FragmentManager} instead; this is also 3799 * available on older platforms through the Android compatibility package. 3800 */ 3801 @Deprecated 3802 public final void removeDialog(int id) { 3803 if (mManagedDialogs != null) { 3804 final ManagedDialog md = mManagedDialogs.get(id); 3805 if (md != null) { 3806 md.mDialog.dismiss(); 3807 mManagedDialogs.remove(id); 3808 } 3809 } 3810 } 3811 3812 /** 3813 * This hook is called when the user signals the desire to start a search. 3814 * 3815 * <p>You can use this function as a simple way to launch the search UI, in response to a 3816 * menu item, search button, or other widgets within your activity. Unless overidden, 3817 * calling this function is the same as calling 3818 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3819 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3820 * 3821 * <p>You can override this function to force global search, e.g. in response to a dedicated 3822 * search key, or to block search entirely (by simply returning false). 3823 * 3824 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 3825 * implementation changes to simply return false and you must supply your own custom 3826 * implementation if you want to support search.</p> 3827 * 3828 * @param searchEvent The {@link SearchEvent} that signaled this search. 3829 * @return Returns {@code true} if search launched, and {@code false} if the activity does 3830 * not respond to search. The default implementation always returns {@code true}, except 3831 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 3832 * 3833 * @see android.app.SearchManager 3834 */ 3835 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 3836 mSearchEvent = searchEvent; 3837 boolean result = onSearchRequested(); 3838 mSearchEvent = null; 3839 return result; 3840 } 3841 3842 /** 3843 * @see #onSearchRequested(SearchEvent) 3844 */ 3845 public boolean onSearchRequested() { 3846 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 3847 != Configuration.UI_MODE_TYPE_TELEVISION) { 3848 startSearch(null, false, null, false); 3849 return true; 3850 } else { 3851 return false; 3852 } 3853 } 3854 3855 /** 3856 * During the onSearchRequested() callbacks, this function will return the 3857 * {@link SearchEvent} that triggered the callback, if it exists. 3858 * 3859 * @return SearchEvent The SearchEvent that triggered the {@link 3860 * #onSearchRequested} callback. 3861 */ 3862 public final SearchEvent getSearchEvent() { 3863 return mSearchEvent; 3864 } 3865 3866 /** 3867 * This hook is called to launch the search UI. 3868 * 3869 * <p>It is typically called from onSearchRequested(), either directly from 3870 * Activity.onSearchRequested() or from an overridden version in any given 3871 * Activity. If your goal is simply to activate search, it is preferred to call 3872 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3873 * is to inject specific data such as context data, it is preferred to <i>override</i> 3874 * onSearchRequested(), so that any callers to it will benefit from the override. 3875 * 3876 * @param initialQuery Any non-null non-empty string will be inserted as 3877 * pre-entered text in the search query box. 3878 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3879 * any further typing will replace it. This is useful for cases where an entire pre-formed 3880 * query is being inserted. If false, the selection point will be placed at the end of the 3881 * inserted query. This is useful when the inserted query is text that the user entered, 3882 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3883 * if initialQuery is a non-empty string.</i> 3884 * @param appSearchData An application can insert application-specific 3885 * context here, in order to improve quality or specificity of its own 3886 * searches. This data will be returned with SEARCH intent(s). Null if 3887 * no extra data is required. 3888 * @param globalSearch If false, this will only launch the search that has been specifically 3889 * defined by the application (which is usually defined as a local search). If no default 3890 * search is defined in the current application or activity, global search will be launched. 3891 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3892 * 3893 * @see android.app.SearchManager 3894 * @see #onSearchRequested 3895 */ 3896 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3897 @Nullable Bundle appSearchData, boolean globalSearch) { 3898 ensureSearchManager(); 3899 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3900 appSearchData, globalSearch); 3901 } 3902 3903 /** 3904 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3905 * the search dialog. Made available for testing purposes. 3906 * 3907 * @param query The query to trigger. If empty, the request will be ignored. 3908 * @param appSearchData An application can insert application-specific 3909 * context here, in order to improve quality or specificity of its own 3910 * searches. This data will be returned with SEARCH intent(s). Null if 3911 * no extra data is required. 3912 */ 3913 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3914 ensureSearchManager(); 3915 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3916 } 3917 3918 /** 3919 * Request that key events come to this activity. Use this if your 3920 * activity has no views with focus, but the activity still wants 3921 * a chance to process key events. 3922 * 3923 * @see android.view.Window#takeKeyEvents 3924 */ 3925 public void takeKeyEvents(boolean get) { 3926 getWindow().takeKeyEvents(get); 3927 } 3928 3929 /** 3930 * Enable extended window features. This is a convenience for calling 3931 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3932 * 3933 * @param featureId The desired feature as defined in 3934 * {@link android.view.Window}. 3935 * @return Returns true if the requested feature is supported and now 3936 * enabled. 3937 * 3938 * @see android.view.Window#requestFeature 3939 */ 3940 public final boolean requestWindowFeature(int featureId) { 3941 return getWindow().requestFeature(featureId); 3942 } 3943 3944 /** 3945 * Convenience for calling 3946 * {@link android.view.Window#setFeatureDrawableResource}. 3947 */ 3948 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 3949 getWindow().setFeatureDrawableResource(featureId, resId); 3950 } 3951 3952 /** 3953 * Convenience for calling 3954 * {@link android.view.Window#setFeatureDrawableUri}. 3955 */ 3956 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3957 getWindow().setFeatureDrawableUri(featureId, uri); 3958 } 3959 3960 /** 3961 * Convenience for calling 3962 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3963 */ 3964 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3965 getWindow().setFeatureDrawable(featureId, drawable); 3966 } 3967 3968 /** 3969 * Convenience for calling 3970 * {@link android.view.Window#setFeatureDrawableAlpha}. 3971 */ 3972 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3973 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3974 } 3975 3976 /** 3977 * Convenience for calling 3978 * {@link android.view.Window#getLayoutInflater}. 3979 */ 3980 @NonNull 3981 public LayoutInflater getLayoutInflater() { 3982 return getWindow().getLayoutInflater(); 3983 } 3984 3985 /** 3986 * Returns a {@link MenuInflater} with this context. 3987 */ 3988 @NonNull 3989 public MenuInflater getMenuInflater() { 3990 // Make sure that action views can get an appropriate theme. 3991 if (mMenuInflater == null) { 3992 initWindowDecorActionBar(); 3993 if (mActionBar != null) { 3994 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3995 } else { 3996 mMenuInflater = new MenuInflater(this); 3997 } 3998 } 3999 return mMenuInflater; 4000 } 4001 4002 @Override 4003 public void setTheme(int resid) { 4004 super.setTheme(resid); 4005 mWindow.setTheme(resid); 4006 } 4007 4008 @Override 4009 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 4010 boolean first) { 4011 if (mParent == null) { 4012 super.onApplyThemeResource(theme, resid, first); 4013 } else { 4014 try { 4015 theme.setTo(mParent.getTheme()); 4016 } catch (Exception e) { 4017 // Empty 4018 } 4019 theme.applyStyle(resid, false); 4020 } 4021 4022 // Get the primary color and update the TaskDescription for this activity 4023 TypedArray a = theme.obtainStyledAttributes( 4024 com.android.internal.R.styleable.ActivityTaskDescription); 4025 if (mTaskDescription.getPrimaryColor() == 0) { 4026 int colorPrimary = a.getColor( 4027 com.android.internal.R.styleable.ActivityTaskDescription_colorPrimary, 0); 4028 if (colorPrimary != 0 && Color.alpha(colorPrimary) == 0xFF) { 4029 mTaskDescription.setPrimaryColor(colorPrimary); 4030 } 4031 } 4032 // For dev-preview only. 4033 if (mTaskDescription.getBackgroundColor() == 0) { 4034 int colorBackground = a.getColor( 4035 com.android.internal.R.styleable.ActivityTaskDescription_colorBackground, 0); 4036 if (colorBackground != 0 && Color.alpha(colorBackground) == 0xFF) { 4037 mTaskDescription.setBackgroundColor(colorBackground); 4038 } 4039 } 4040 a.recycle(); 4041 setTaskDescription(mTaskDescription); 4042 } 4043 4044 /** 4045 * Requests permissions to be granted to this application. These permissions 4046 * must be requested in your manifest, they should not be granted to your app, 4047 * and they should have protection level {@link android.content.pm.PermissionInfo 4048 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 4049 * the platform or a third-party app. 4050 * <p> 4051 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 4052 * are granted at install time if requested in the manifest. Signature permissions 4053 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 4054 * install time if requested in the manifest and the signature of your app matches 4055 * the signature of the app declaring the permissions. 4056 * </p> 4057 * <p> 4058 * If your app does not have the requested permissions the user will be presented 4059 * with UI for accepting them. After the user has accepted or rejected the 4060 * requested permissions you will receive a callback on {@link 4061 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4062 * permissions were granted or not. 4063 * </p> 4064 * <p> 4065 * Note that requesting a permission does not guarantee it will be granted and 4066 * your app should be able to run without having this permission. 4067 * </p> 4068 * <p> 4069 * This method may start an activity allowing the user to choose which permissions 4070 * to grant and which to reject. Hence, you should be prepared that your activity 4071 * may be paused and resumed. Further, granting some permissions may require 4072 * a restart of you application. In such a case, the system will recreate the 4073 * activity stack before delivering the result to {@link 4074 * #onRequestPermissionsResult(int, String[], int[])}. 4075 * </p> 4076 * <p> 4077 * When checking whether you have a permission you should use {@link 4078 * #checkSelfPermission(String)}. 4079 * </p> 4080 * <p> 4081 * Calling this API for permissions already granted to your app would show UI 4082 * to the user to decide whether the app can still hold these permissions. This 4083 * can be useful if the way your app uses data guarded by the permissions 4084 * changes significantly. 4085 * </p> 4086 * <p> 4087 * You cannot request a permission if your activity sets {@link 4088 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4089 * <code>true</code> because in this case the activity would not receive 4090 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4091 * </p> 4092 * <p> 4093 * The <a href="http://developer.android.com/samples/RuntimePermissions/index.html"> 4094 * RuntimePermissions</a> sample app demonstrates how to use this method to 4095 * request permissions at run time. 4096 * </p> 4097 * 4098 * @param permissions The requested permissions. Must me non-null and not empty. 4099 * @param requestCode Application specific request code to match with a result 4100 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4101 * Should be >= 0. 4102 * 4103 * @throws IllegalArgumentException if requestCode is negative. 4104 * 4105 * @see #onRequestPermissionsResult(int, String[], int[]) 4106 * @see #checkSelfPermission(String) 4107 * @see #shouldShowRequestPermissionRationale(String) 4108 */ 4109 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4110 if (requestCode < 0) { 4111 throw new IllegalArgumentException("requestCode should be >= 0"); 4112 } 4113 if (mHasCurrentPermissionsRequest) { 4114 Log.w(TAG, "Can reqeust only one set of permissions at a time"); 4115 // Dispatch the callback with empty arrays which means a cancellation. 4116 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4117 return; 4118 } 4119 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4120 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4121 mHasCurrentPermissionsRequest = true; 4122 } 4123 4124 /** 4125 * Callback for the result from requesting permissions. This method 4126 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4127 * <p> 4128 * <strong>Note:</strong> It is possible that the permissions request interaction 4129 * with the user is interrupted. In this case you will receive empty permissions 4130 * and results arrays which should be treated as a cancellation. 4131 * </p> 4132 * 4133 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4134 * @param permissions The requested permissions. Never null. 4135 * @param grantResults The grant results for the corresponding permissions 4136 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4137 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4138 * 4139 * @see #requestPermissions(String[], int) 4140 */ 4141 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4142 @NonNull int[] grantResults) { 4143 /* callback - no nothing */ 4144 } 4145 4146 /** 4147 * Gets whether you should show UI with rationale for requesting a permission. 4148 * You should do this only if you do not have the permission and the context in 4149 * which the permission is requested does not clearly communicate to the user 4150 * what would be the benefit from granting this permission. 4151 * <p> 4152 * For example, if you write a camera app, requesting the camera permission 4153 * would be expected by the user and no rationale for why it is requested is 4154 * needed. If however, the app needs location for tagging photos then a non-tech 4155 * savvy user may wonder how location is related to taking photos. In this case 4156 * you may choose to show UI with rationale of requesting this permission. 4157 * </p> 4158 * 4159 * @param permission A permission your app wants to request. 4160 * @return Whether you can show permission rationale UI. 4161 * 4162 * @see #checkSelfPermission(String) 4163 * @see #requestPermissions(String[], int) 4164 * @see #onRequestPermissionsResult(int, String[], int[]) 4165 */ 4166 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4167 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4168 } 4169 4170 /** 4171 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4172 * with no options. 4173 * 4174 * @param intent The intent to start. 4175 * @param requestCode If >= 0, this code will be returned in 4176 * onActivityResult() when the activity exits. 4177 * 4178 * @throws android.content.ActivityNotFoundException 4179 * 4180 * @see #startActivity 4181 */ 4182 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4183 startActivityForResult(intent, requestCode, null); 4184 } 4185 4186 /** 4187 * Launch an activity for which you would like a result when it finished. 4188 * When this activity exits, your 4189 * onActivityResult() method will be called with the given requestCode. 4190 * Using a negative requestCode is the same as calling 4191 * {@link #startActivity} (the activity is not launched as a sub-activity). 4192 * 4193 * <p>Note that this method should only be used with Intent protocols 4194 * that are defined to return a result. In other protocols (such as 4195 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4196 * not get the result when you expect. For example, if the activity you 4197 * are launching uses the singleTask launch mode, it will not run in your 4198 * task and thus you will immediately receive a cancel result. 4199 * 4200 * <p>As a special case, if you call startActivityForResult() with a requestCode 4201 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4202 * activity, then your window will not be displayed until a result is 4203 * returned back from the started activity. This is to avoid visible 4204 * flickering when redirecting to another activity. 4205 * 4206 * <p>This method throws {@link android.content.ActivityNotFoundException} 4207 * if there was no Activity found to run the given Intent. 4208 * 4209 * @param intent The intent to start. 4210 * @param requestCode If >= 0, this code will be returned in 4211 * onActivityResult() when the activity exits. 4212 * @param options Additional options for how the Activity should be started. 4213 * See {@link android.content.Context#startActivity(Intent, Bundle) 4214 * Context.startActivity(Intent, Bundle)} for more details. 4215 * 4216 * @throws android.content.ActivityNotFoundException 4217 * 4218 * @see #startActivity 4219 */ 4220 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4221 @Nullable Bundle options) { 4222 if (mParent == null) { 4223 options = transferSpringboardActivityOptions(options); 4224 Instrumentation.ActivityResult ar = 4225 mInstrumentation.execStartActivity( 4226 this, mMainThread.getApplicationThread(), mToken, this, 4227 intent, requestCode, options); 4228 if (ar != null) { 4229 mMainThread.sendActivityResult( 4230 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4231 ar.getResultData()); 4232 } 4233 if (requestCode >= 0) { 4234 // If this start is requesting a result, we can avoid making 4235 // the activity visible until the result is received. Setting 4236 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4237 // activity hidden during this time, to avoid flickering. 4238 // This can only be done when a result is requested because 4239 // that guarantees we will get information back when the 4240 // activity is finished, no matter what happens to it. 4241 mStartedActivity = true; 4242 } 4243 4244 cancelInputsAndStartExitTransition(options); 4245 // TODO Consider clearing/flushing other event sources and events for child windows. 4246 } else { 4247 if (options != null) { 4248 mParent.startActivityFromChild(this, intent, requestCode, options); 4249 } else { 4250 // Note we want to go through this method for compatibility with 4251 // existing applications that may have overridden it. 4252 mParent.startActivityFromChild(this, intent, requestCode); 4253 } 4254 } 4255 } 4256 4257 /** 4258 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4259 * 4260 * @param options The ActivityOptions bundle used to start an Activity. 4261 */ 4262 private void cancelInputsAndStartExitTransition(Bundle options) { 4263 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4264 if (decor != null) { 4265 decor.cancelPendingInputEvents(); 4266 } 4267 if (options != null && !isTopOfTask()) { 4268 mActivityTransitionState.startExitOutTransition(this, options); 4269 } 4270 } 4271 4272 private Bundle transferSpringboardActivityOptions(Bundle options) { 4273 if (options == null && (mWindow != null && !mWindow.isActive())) { 4274 final ActivityOptions activityOptions = getActivityOptions(); 4275 if (activityOptions != null && 4276 activityOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { 4277 return activityOptions.toBundle(); 4278 } 4279 } 4280 return options; 4281 } 4282 4283 /** 4284 * @hide Implement to provide correct calling token. 4285 */ 4286 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4287 startActivityForResultAsUser(intent, requestCode, null, user); 4288 } 4289 4290 /** 4291 * @hide Implement to provide correct calling token. 4292 */ 4293 public void startActivityForResultAsUser(Intent intent, int requestCode, 4294 @Nullable Bundle options, UserHandle user) { 4295 if (mParent != null) { 4296 throw new RuntimeException("Can't be called from a child"); 4297 } 4298 options = transferSpringboardActivityOptions(options); 4299 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4300 this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, 4301 options, user); 4302 if (ar != null) { 4303 mMainThread.sendActivityResult( 4304 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4305 } 4306 if (requestCode >= 0) { 4307 // If this start is requesting a result, we can avoid making 4308 // the activity visible until the result is received. Setting 4309 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4310 // activity hidden during this time, to avoid flickering. 4311 // This can only be done when a result is requested because 4312 // that guarantees we will get information back when the 4313 // activity is finished, no matter what happens to it. 4314 mStartedActivity = true; 4315 } 4316 4317 cancelInputsAndStartExitTransition(options); 4318 } 4319 4320 /** 4321 * @hide Implement to provide correct calling token. 4322 */ 4323 public void startActivityAsUser(Intent intent, UserHandle user) { 4324 startActivityAsUser(intent, null, user); 4325 } 4326 4327 /** 4328 * @hide Implement to provide correct calling token. 4329 */ 4330 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4331 if (mParent != null) { 4332 throw new RuntimeException("Can't be called from a child"); 4333 } 4334 options = transferSpringboardActivityOptions(options); 4335 Instrumentation.ActivityResult ar = 4336 mInstrumentation.execStartActivity( 4337 this, mMainThread.getApplicationThread(), mToken, this, 4338 intent, -1, options, user); 4339 if (ar != null) { 4340 mMainThread.sendActivityResult( 4341 mToken, mEmbeddedID, -1, ar.getResultCode(), 4342 ar.getResultData()); 4343 } 4344 cancelInputsAndStartExitTransition(options); 4345 } 4346 4347 /** 4348 * Start a new activity as if it was started by the activity that started our 4349 * current activity. This is for the resolver and chooser activities, which operate 4350 * as intermediaries that dispatch their intent to the target the user selects -- to 4351 * do this, they must perform all security checks including permission grants as if 4352 * their launch had come from the original activity. 4353 * @param intent The Intent to start. 4354 * @param options ActivityOptions or null. 4355 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4356 * caller it is doing the start is, is actually allowed to start the target activity. 4357 * If you set this to true, you must set an explicit component in the Intent and do any 4358 * appropriate security checks yourself. 4359 * @param userId The user the new activity should run as. 4360 * @hide 4361 */ 4362 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4363 boolean ignoreTargetSecurity, int userId) { 4364 if (mParent != null) { 4365 throw new RuntimeException("Can't be called from a child"); 4366 } 4367 options = transferSpringboardActivityOptions(options); 4368 Instrumentation.ActivityResult ar = 4369 mInstrumentation.execStartActivityAsCaller( 4370 this, mMainThread.getApplicationThread(), mToken, this, 4371 intent, -1, options, ignoreTargetSecurity, userId); 4372 if (ar != null) { 4373 mMainThread.sendActivityResult( 4374 mToken, mEmbeddedID, -1, ar.getResultCode(), 4375 ar.getResultData()); 4376 } 4377 cancelInputsAndStartExitTransition(options); 4378 } 4379 4380 /** 4381 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4382 * Intent, int, int, int, Bundle)} with no options. 4383 * 4384 * @param intent The IntentSender to launch. 4385 * @param requestCode If >= 0, this code will be returned in 4386 * onActivityResult() when the activity exits. 4387 * @param fillInIntent If non-null, this will be provided as the 4388 * intent parameter to {@link IntentSender#sendIntent}. 4389 * @param flagsMask Intent flags in the original IntentSender that you 4390 * would like to change. 4391 * @param flagsValues Desired values for any bits set in 4392 * <var>flagsMask</var> 4393 * @param extraFlags Always set to 0. 4394 */ 4395 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4396 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4397 throws IntentSender.SendIntentException { 4398 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4399 flagsValues, extraFlags, null); 4400 } 4401 4402 /** 4403 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4404 * to use a IntentSender to describe the activity to be started. If 4405 * the IntentSender is for an activity, that activity will be started 4406 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4407 * here; otherwise, its associated action will be executed (such as 4408 * sending a broadcast) as if you had called 4409 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4410 * 4411 * @param intent The IntentSender to launch. 4412 * @param requestCode If >= 0, this code will be returned in 4413 * onActivityResult() when the activity exits. 4414 * @param fillInIntent If non-null, this will be provided as the 4415 * intent parameter to {@link IntentSender#sendIntent}. 4416 * @param flagsMask Intent flags in the original IntentSender that you 4417 * would like to change. 4418 * @param flagsValues Desired values for any bits set in 4419 * <var>flagsMask</var> 4420 * @param extraFlags Always set to 0. 4421 * @param options Additional options for how the Activity should be started. 4422 * See {@link android.content.Context#startActivity(Intent, Bundle) 4423 * Context.startActivity(Intent, Bundle)} for more details. If options 4424 * have also been supplied by the IntentSender, options given here will 4425 * override any that conflict with those given by the IntentSender. 4426 */ 4427 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4428 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4429 Bundle options) throws IntentSender.SendIntentException { 4430 if (mParent == null) { 4431 startIntentSenderForResultInner(intent, mEmbeddedID, requestCode, fillInIntent, 4432 flagsMask, flagsValues, options); 4433 } else if (options != null) { 4434 mParent.startIntentSenderFromChild(this, intent, requestCode, 4435 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4436 } else { 4437 // Note we want to go through this call for compatibility with 4438 // existing applications that may have overridden the method. 4439 mParent.startIntentSenderFromChild(this, intent, requestCode, 4440 fillInIntent, flagsMask, flagsValues, extraFlags); 4441 } 4442 } 4443 4444 private void startIntentSenderForResultInner(IntentSender intent, String who, int requestCode, 4445 Intent fillInIntent, int flagsMask, int flagsValues, 4446 Bundle options) 4447 throws IntentSender.SendIntentException { 4448 try { 4449 String resolvedType = null; 4450 if (fillInIntent != null) { 4451 fillInIntent.migrateExtraStreamToClipData(); 4452 fillInIntent.prepareToLeaveProcess(this); 4453 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4454 } 4455 int result = ActivityManagerNative.getDefault() 4456 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 4457 fillInIntent, resolvedType, mToken, who, 4458 requestCode, flagsMask, flagsValues, options); 4459 if (result == ActivityManager.START_CANCELED) { 4460 throw new IntentSender.SendIntentException(); 4461 } 4462 Instrumentation.checkStartActivityResult(result, null); 4463 } catch (RemoteException e) { 4464 } 4465 if (requestCode >= 0) { 4466 // If this start is requesting a result, we can avoid making 4467 // the activity visible until the result is received. Setting 4468 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4469 // activity hidden during this time, to avoid flickering. 4470 // This can only be done when a result is requested because 4471 // that guarantees we will get information back when the 4472 // activity is finished, no matter what happens to it. 4473 mStartedActivity = true; 4474 } 4475 } 4476 4477 /** 4478 * Same as {@link #startActivity(Intent, Bundle)} with no options 4479 * specified. 4480 * 4481 * @param intent The intent to start. 4482 * 4483 * @throws android.content.ActivityNotFoundException 4484 * 4485 * @see {@link #startActivity(Intent, Bundle)} 4486 * @see #startActivityForResult 4487 */ 4488 @Override 4489 public void startActivity(Intent intent) { 4490 this.startActivity(intent, null); 4491 } 4492 4493 /** 4494 * Launch a new activity. You will not receive any information about when 4495 * the activity exits. This implementation overrides the base version, 4496 * providing information about 4497 * the activity performing the launch. Because of this additional 4498 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4499 * required; if not specified, the new activity will be added to the 4500 * task of the caller. 4501 * 4502 * <p>This method throws {@link android.content.ActivityNotFoundException} 4503 * if there was no Activity found to run the given Intent. 4504 * 4505 * @param intent The intent to start. 4506 * @param options Additional options for how the Activity should be started. 4507 * See {@link android.content.Context#startActivity(Intent, Bundle) 4508 * Context.startActivity(Intent, Bundle)} for more details. 4509 * 4510 * @throws android.content.ActivityNotFoundException 4511 * 4512 * @see {@link #startActivity(Intent)} 4513 * @see #startActivityForResult 4514 */ 4515 @Override 4516 public void startActivity(Intent intent, @Nullable Bundle options) { 4517 if (options != null) { 4518 startActivityForResult(intent, -1, options); 4519 } else { 4520 // Note we want to go through this call for compatibility with 4521 // applications that may have overridden the method. 4522 startActivityForResult(intent, -1); 4523 } 4524 } 4525 4526 /** 4527 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4528 * specified. 4529 * 4530 * @param intents The intents to start. 4531 * 4532 * @throws android.content.ActivityNotFoundException 4533 * 4534 * @see {@link #startActivities(Intent[], Bundle)} 4535 * @see #startActivityForResult 4536 */ 4537 @Override 4538 public void startActivities(Intent[] intents) { 4539 startActivities(intents, null); 4540 } 4541 4542 /** 4543 * Launch a new activity. You will not receive any information about when 4544 * the activity exits. This implementation overrides the base version, 4545 * providing information about 4546 * the activity performing the launch. Because of this additional 4547 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4548 * required; if not specified, the new activity will be added to the 4549 * task of the caller. 4550 * 4551 * <p>This method throws {@link android.content.ActivityNotFoundException} 4552 * if there was no Activity found to run the given Intent. 4553 * 4554 * @param intents The intents to start. 4555 * @param options Additional options for how the Activity should be started. 4556 * See {@link android.content.Context#startActivity(Intent, Bundle) 4557 * Context.startActivity(Intent, Bundle)} for more details. 4558 * 4559 * @throws android.content.ActivityNotFoundException 4560 * 4561 * @see {@link #startActivities(Intent[])} 4562 * @see #startActivityForResult 4563 */ 4564 @Override 4565 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4566 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4567 mToken, this, intents, options); 4568 } 4569 4570 /** 4571 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4572 * with no options. 4573 * 4574 * @param intent The IntentSender to launch. 4575 * @param fillInIntent If non-null, this will be provided as the 4576 * intent parameter to {@link IntentSender#sendIntent}. 4577 * @param flagsMask Intent flags in the original IntentSender that you 4578 * would like to change. 4579 * @param flagsValues Desired values for any bits set in 4580 * <var>flagsMask</var> 4581 * @param extraFlags Always set to 0. 4582 */ 4583 public void startIntentSender(IntentSender intent, 4584 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4585 throws IntentSender.SendIntentException { 4586 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4587 extraFlags, null); 4588 } 4589 4590 /** 4591 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4592 * to start; see 4593 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4594 * for more information. 4595 * 4596 * @param intent The IntentSender to launch. 4597 * @param fillInIntent If non-null, this will be provided as the 4598 * intent parameter to {@link IntentSender#sendIntent}. 4599 * @param flagsMask Intent flags in the original IntentSender that you 4600 * would like to change. 4601 * @param flagsValues Desired values for any bits set in 4602 * <var>flagsMask</var> 4603 * @param extraFlags Always set to 0. 4604 * @param options Additional options for how the Activity should be started. 4605 * See {@link android.content.Context#startActivity(Intent, Bundle) 4606 * Context.startActivity(Intent, Bundle)} for more details. If options 4607 * have also been supplied by the IntentSender, options given here will 4608 * override any that conflict with those given by the IntentSender. 4609 */ 4610 public void startIntentSender(IntentSender intent, 4611 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4612 Bundle options) throws IntentSender.SendIntentException { 4613 if (options != null) { 4614 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4615 flagsValues, extraFlags, options); 4616 } else { 4617 // Note we want to go through this call for compatibility with 4618 // applications that may have overridden the method. 4619 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4620 flagsValues, extraFlags); 4621 } 4622 } 4623 4624 /** 4625 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4626 * with no options. 4627 * 4628 * @param intent The intent to start. 4629 * @param requestCode If >= 0, this code will be returned in 4630 * onActivityResult() when the activity exits, as described in 4631 * {@link #startActivityForResult}. 4632 * 4633 * @return If a new activity was launched then true is returned; otherwise 4634 * false is returned and you must handle the Intent yourself. 4635 * 4636 * @see #startActivity 4637 * @see #startActivityForResult 4638 */ 4639 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4640 int requestCode) { 4641 return startActivityIfNeeded(intent, requestCode, null); 4642 } 4643 4644 /** 4645 * A special variation to launch an activity only if a new activity 4646 * instance is needed to handle the given Intent. In other words, this is 4647 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4648 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4649 * singleTask or singleTop 4650 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4651 * and the activity 4652 * that handles <var>intent</var> is the same as your currently running 4653 * activity, then a new instance is not needed. In this case, instead of 4654 * the normal behavior of calling {@link #onNewIntent} this function will 4655 * return and you can handle the Intent yourself. 4656 * 4657 * <p>This function can only be called from a top-level activity; if it is 4658 * called from a child activity, a runtime exception will be thrown. 4659 * 4660 * @param intent The intent to start. 4661 * @param requestCode If >= 0, this code will be returned in 4662 * onActivityResult() when the activity exits, as described in 4663 * {@link #startActivityForResult}. 4664 * @param options Additional options for how the Activity should be started. 4665 * See {@link android.content.Context#startActivity(Intent, Bundle) 4666 * Context.startActivity(Intent, Bundle)} for more details. 4667 * 4668 * @return If a new activity was launched then true is returned; otherwise 4669 * false is returned and you must handle the Intent yourself. 4670 * 4671 * @see #startActivity 4672 * @see #startActivityForResult 4673 */ 4674 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4675 int requestCode, @Nullable Bundle options) { 4676 if (mParent == null) { 4677 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4678 try { 4679 Uri referrer = onProvideReferrer(); 4680 if (referrer != null) { 4681 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4682 } 4683 intent.migrateExtraStreamToClipData(); 4684 intent.prepareToLeaveProcess(this); 4685 result = ActivityManagerNative.getDefault() 4686 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4687 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4688 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4689 null, options); 4690 } catch (RemoteException e) { 4691 // Empty 4692 } 4693 4694 Instrumentation.checkStartActivityResult(result, intent); 4695 4696 if (requestCode >= 0) { 4697 // If this start is requesting a result, we can avoid making 4698 // the activity visible until the result is received. Setting 4699 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4700 // activity hidden during this time, to avoid flickering. 4701 // This can only be done when a result is requested because 4702 // that guarantees we will get information back when the 4703 // activity is finished, no matter what happens to it. 4704 mStartedActivity = true; 4705 } 4706 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4707 } 4708 4709 throw new UnsupportedOperationException( 4710 "startActivityIfNeeded can only be called from a top-level activity"); 4711 } 4712 4713 /** 4714 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4715 * no options. 4716 * 4717 * @param intent The intent to dispatch to the next activity. For 4718 * correct behavior, this must be the same as the Intent that started 4719 * your own activity; the only changes you can make are to the extras 4720 * inside of it. 4721 * 4722 * @return Returns a boolean indicating whether there was another Activity 4723 * to start: true if there was a next activity to start, false if there 4724 * wasn't. In general, if true is returned you will then want to call 4725 * finish() on yourself. 4726 */ 4727 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 4728 return startNextMatchingActivity(intent, null); 4729 } 4730 4731 /** 4732 * Special version of starting an activity, for use when you are replacing 4733 * other activity components. You can use this to hand the Intent off 4734 * to the next Activity that can handle it. You typically call this in 4735 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4736 * 4737 * @param intent The intent to dispatch to the next activity. For 4738 * correct behavior, this must be the same as the Intent that started 4739 * your own activity; the only changes you can make are to the extras 4740 * inside of it. 4741 * @param options Additional options for how the Activity should be started. 4742 * See {@link android.content.Context#startActivity(Intent, Bundle) 4743 * Context.startActivity(Intent, Bundle)} for more details. 4744 * 4745 * @return Returns a boolean indicating whether there was another Activity 4746 * to start: true if there was a next activity to start, false if there 4747 * wasn't. In general, if true is returned you will then want to call 4748 * finish() on yourself. 4749 */ 4750 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 4751 @Nullable Bundle options) { 4752 if (mParent == null) { 4753 try { 4754 intent.migrateExtraStreamToClipData(); 4755 intent.prepareToLeaveProcess(this); 4756 return ActivityManagerNative.getDefault() 4757 .startNextMatchingActivity(mToken, intent, options); 4758 } catch (RemoteException e) { 4759 // Empty 4760 } 4761 return false; 4762 } 4763 4764 throw new UnsupportedOperationException( 4765 "startNextMatchingActivity can only be called from a top-level activity"); 4766 } 4767 4768 /** 4769 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4770 * with no options. 4771 * 4772 * @param child The activity making the call. 4773 * @param intent The intent to start. 4774 * @param requestCode Reply request code. < 0 if reply is not requested. 4775 * 4776 * @throws android.content.ActivityNotFoundException 4777 * 4778 * @see #startActivity 4779 * @see #startActivityForResult 4780 */ 4781 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4782 int requestCode) { 4783 startActivityFromChild(child, intent, requestCode, null); 4784 } 4785 4786 /** 4787 * This is called when a child activity of this one calls its 4788 * {@link #startActivity} or {@link #startActivityForResult} method. 4789 * 4790 * <p>This method throws {@link android.content.ActivityNotFoundException} 4791 * if there was no Activity found to run the given Intent. 4792 * 4793 * @param child The activity making the call. 4794 * @param intent The intent to start. 4795 * @param requestCode Reply request code. < 0 if reply is not requested. 4796 * @param options Additional options for how the Activity should be started. 4797 * See {@link android.content.Context#startActivity(Intent, Bundle) 4798 * Context.startActivity(Intent, Bundle)} for more details. 4799 * 4800 * @throws android.content.ActivityNotFoundException 4801 * 4802 * @see #startActivity 4803 * @see #startActivityForResult 4804 */ 4805 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4806 int requestCode, @Nullable Bundle options) { 4807 options = transferSpringboardActivityOptions(options); 4808 Instrumentation.ActivityResult ar = 4809 mInstrumentation.execStartActivity( 4810 this, mMainThread.getApplicationThread(), mToken, child, 4811 intent, requestCode, options); 4812 if (ar != null) { 4813 mMainThread.sendActivityResult( 4814 mToken, child.mEmbeddedID, requestCode, 4815 ar.getResultCode(), ar.getResultData()); 4816 } 4817 cancelInputsAndStartExitTransition(options); 4818 } 4819 4820 /** 4821 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4822 * with no options. 4823 * 4824 * @param fragment The fragment making the call. 4825 * @param intent The intent to start. 4826 * @param requestCode Reply request code. < 0 if reply is not requested. 4827 * 4828 * @throws android.content.ActivityNotFoundException 4829 * 4830 * @see Fragment#startActivity 4831 * @see Fragment#startActivityForResult 4832 */ 4833 public void startActivityFromFragment(@NonNull Fragment fragment, 4834 @RequiresPermission Intent intent, int requestCode) { 4835 startActivityFromFragment(fragment, intent, requestCode, null); 4836 } 4837 4838 /** 4839 * This is called when a Fragment in this activity calls its 4840 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4841 * method. 4842 * 4843 * <p>This method throws {@link android.content.ActivityNotFoundException} 4844 * if there was no Activity found to run the given Intent. 4845 * 4846 * @param fragment The fragment making the call. 4847 * @param intent The intent to start. 4848 * @param requestCode Reply request code. < 0 if reply is not requested. 4849 * @param options Additional options for how the Activity should be started. 4850 * See {@link android.content.Context#startActivity(Intent, Bundle) 4851 * Context.startActivity(Intent, Bundle)} for more details. 4852 * 4853 * @throws android.content.ActivityNotFoundException 4854 * 4855 * @see Fragment#startActivity 4856 * @see Fragment#startActivityForResult 4857 */ 4858 public void startActivityFromFragment(@NonNull Fragment fragment, 4859 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 4860 startActivityForResult(fragment.mWho, intent, requestCode, options); 4861 } 4862 4863 /** 4864 * @hide 4865 */ 4866 @Override 4867 public void startActivityForResult( 4868 String who, Intent intent, int requestCode, @Nullable Bundle options) { 4869 Uri referrer = onProvideReferrer(); 4870 if (referrer != null) { 4871 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4872 } 4873 options = transferSpringboardActivityOptions(options); 4874 Instrumentation.ActivityResult ar = 4875 mInstrumentation.execStartActivity( 4876 this, mMainThread.getApplicationThread(), mToken, who, 4877 intent, requestCode, options); 4878 if (ar != null) { 4879 mMainThread.sendActivityResult( 4880 mToken, who, requestCode, 4881 ar.getResultCode(), ar.getResultData()); 4882 } 4883 cancelInputsAndStartExitTransition(options); 4884 } 4885 4886 /** 4887 * @hide 4888 */ 4889 @Override 4890 public boolean canStartActivityForResult() { 4891 return true; 4892 } 4893 4894 /** 4895 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4896 * int, Intent, int, int, int, Bundle)} with no options. 4897 */ 4898 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4899 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4900 int extraFlags) 4901 throws IntentSender.SendIntentException { 4902 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4903 flagsMask, flagsValues, extraFlags, null); 4904 } 4905 4906 /** 4907 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4908 * taking a IntentSender; see 4909 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4910 * for more information. 4911 */ 4912 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4913 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4914 int extraFlags, @Nullable Bundle options) 4915 throws IntentSender.SendIntentException { 4916 startIntentSenderForResultInner(intent, child.mEmbeddedID, requestCode, fillInIntent, 4917 flagsMask, flagsValues, options); 4918 } 4919 4920 /** 4921 * Like {@link #startIntentSenderFromChild}, but taking a Fragment; see 4922 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4923 * for more information. 4924 * 4925 * @hide 4926 */ 4927 public void startIntentSenderFromChildFragment(Fragment child, IntentSender intent, 4928 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4929 int extraFlags, @Nullable Bundle options) 4930 throws IntentSender.SendIntentException { 4931 startIntentSenderForResultInner(intent, child.mWho, requestCode, fillInIntent, 4932 flagsMask, flagsValues, options); 4933 } 4934 4935 /** 4936 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4937 * or {@link #finish} to specify an explicit transition animation to 4938 * perform next. 4939 * 4940 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4941 * to using this with starting activities is to supply the desired animation 4942 * information through a {@link ActivityOptions} bundle to 4943 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4944 * you to specify a custom animation even when starting an activity from 4945 * outside the context of the current top activity. 4946 * 4947 * @param enterAnim A resource ID of the animation resource to use for 4948 * the incoming activity. Use 0 for no animation. 4949 * @param exitAnim A resource ID of the animation resource to use for 4950 * the outgoing activity. Use 0 for no animation. 4951 */ 4952 public void overridePendingTransition(int enterAnim, int exitAnim) { 4953 try { 4954 ActivityManagerNative.getDefault().overridePendingTransition( 4955 mToken, getPackageName(), enterAnim, exitAnim); 4956 } catch (RemoteException e) { 4957 } 4958 } 4959 4960 /** 4961 * Call this to set the result that your activity will return to its 4962 * caller. 4963 * 4964 * @param resultCode The result code to propagate back to the originating 4965 * activity, often RESULT_CANCELED or RESULT_OK 4966 * 4967 * @see #RESULT_CANCELED 4968 * @see #RESULT_OK 4969 * @see #RESULT_FIRST_USER 4970 * @see #setResult(int, Intent) 4971 */ 4972 public final void setResult(int resultCode) { 4973 synchronized (this) { 4974 mResultCode = resultCode; 4975 mResultData = null; 4976 } 4977 } 4978 4979 /** 4980 * Call this to set the result that your activity will return to its 4981 * caller. 4982 * 4983 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4984 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4985 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4986 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4987 * Activity receiving the result access to the specific URIs in the Intent. 4988 * Access will remain until the Activity has finished (it will remain across the hosting 4989 * process being killed and other temporary destruction) and will be added 4990 * to any existing set of URI permissions it already holds. 4991 * 4992 * @param resultCode The result code to propagate back to the originating 4993 * activity, often RESULT_CANCELED or RESULT_OK 4994 * @param data The data to propagate back to the originating activity. 4995 * 4996 * @see #RESULT_CANCELED 4997 * @see #RESULT_OK 4998 * @see #RESULT_FIRST_USER 4999 * @see #setResult(int) 5000 */ 5001 public final void setResult(int resultCode, Intent data) { 5002 synchronized (this) { 5003 mResultCode = resultCode; 5004 mResultData = data; 5005 } 5006 } 5007 5008 /** 5009 * Return information about who launched this activity. If the launching Intent 5010 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 5011 * that will be returned as-is; otherwise, if known, an 5012 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 5013 * package name that started the Intent will be returned. This may return null if no 5014 * referrer can be identified -- it is neither explicitly specified, nor is it known which 5015 * application package was involved. 5016 * 5017 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 5018 * return the referrer that submitted that new intent to the activity. Otherwise, it 5019 * always returns the referrer of the original Intent.</p> 5020 * 5021 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 5022 * referrer information, applications can spoof it.</p> 5023 */ 5024 @Nullable 5025 public Uri getReferrer() { 5026 Intent intent = getIntent(); 5027 try { 5028 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 5029 if (referrer != null) { 5030 return referrer; 5031 } 5032 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 5033 if (referrerName != null) { 5034 return Uri.parse(referrerName); 5035 } 5036 } catch (BadParcelableException e) { 5037 Log.w(TAG, "Cannot read referrer from intent;" 5038 + " intent extras contain unknown custom Parcelable objects"); 5039 } 5040 if (mReferrer != null) { 5041 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 5042 } 5043 return null; 5044 } 5045 5046 /** 5047 * Override to generate the desired referrer for the content currently being shown 5048 * by the app. The default implementation returns null, meaning the referrer will simply 5049 * be the android-app: of the package name of this activity. Return a non-null Uri to 5050 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 5051 */ 5052 public Uri onProvideReferrer() { 5053 return null; 5054 } 5055 5056 /** 5057 * Return the name of the package that invoked this activity. This is who 5058 * the data in {@link #setResult setResult()} will be sent to. You can 5059 * use this information to validate that the recipient is allowed to 5060 * receive the data. 5061 * 5062 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5063 * did not use the {@link #startActivityForResult} 5064 * form that includes a request code), then the calling package will be 5065 * null.</p> 5066 * 5067 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 5068 * the result from this method was unstable. If the process hosting the calling 5069 * package was no longer running, it would return null instead of the proper package 5070 * name. You can use {@link #getCallingActivity()} and retrieve the package name 5071 * from that instead.</p> 5072 * 5073 * @return The package of the activity that will receive your 5074 * reply, or null if none. 5075 */ 5076 @Nullable 5077 public String getCallingPackage() { 5078 try { 5079 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 5080 } catch (RemoteException e) { 5081 return null; 5082 } 5083 } 5084 5085 /** 5086 * Return the name of the activity that invoked this activity. This is 5087 * who the data in {@link #setResult setResult()} will be sent to. You 5088 * can use this information to validate that the recipient is allowed to 5089 * receive the data. 5090 * 5091 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5092 * did not use the {@link #startActivityForResult} 5093 * form that includes a request code), then the calling package will be 5094 * null. 5095 * 5096 * @return The ComponentName of the activity that will receive your 5097 * reply, or null if none. 5098 */ 5099 @Nullable 5100 public ComponentName getCallingActivity() { 5101 try { 5102 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 5103 } catch (RemoteException e) { 5104 return null; 5105 } 5106 } 5107 5108 /** 5109 * Control whether this activity's main window is visible. This is intended 5110 * only for the special case of an activity that is not going to show a 5111 * UI itself, but can't just finish prior to onResume() because it needs 5112 * to wait for a service binding or such. Setting this to false allows 5113 * you to prevent your UI from being shown during that time. 5114 * 5115 * <p>The default value for this is taken from the 5116 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5117 */ 5118 public void setVisible(boolean visible) { 5119 if (mVisibleFromClient != visible) { 5120 mVisibleFromClient = visible; 5121 if (mVisibleFromServer) { 5122 if (visible) makeVisible(); 5123 else mDecor.setVisibility(View.INVISIBLE); 5124 } 5125 } 5126 } 5127 5128 void makeVisible() { 5129 if (!mWindowAdded) { 5130 ViewManager wm = getWindowManager(); 5131 wm.addView(mDecor, getWindow().getAttributes()); 5132 mWindowAdded = true; 5133 } 5134 mDecor.setVisibility(View.VISIBLE); 5135 } 5136 5137 /** 5138 * Check to see whether this activity is in the process of finishing, 5139 * either because you called {@link #finish} on it or someone else 5140 * has requested that it finished. This is often used in 5141 * {@link #onPause} to determine whether the activity is simply pausing or 5142 * completely finishing. 5143 * 5144 * @return If the activity is finishing, returns true; else returns false. 5145 * 5146 * @see #finish 5147 */ 5148 public boolean isFinishing() { 5149 return mFinished; 5150 } 5151 5152 /** 5153 * Returns true if the final {@link #onDestroy()} call has been made 5154 * on the Activity, so this instance is now dead. 5155 */ 5156 public boolean isDestroyed() { 5157 return mDestroyed; 5158 } 5159 5160 /** 5161 * Check to see whether this activity is in the process of being destroyed in order to be 5162 * recreated with a new configuration. This is often used in 5163 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5164 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5165 * 5166 * @return If the activity is being torn down in order to be recreated with a new configuration, 5167 * returns true; else returns false. 5168 */ 5169 public boolean isChangingConfigurations() { 5170 return mChangingConfigurations; 5171 } 5172 5173 /** 5174 * Cause this Activity to be recreated with a new instance. This results 5175 * in essentially the same flow as when the Activity is created due to 5176 * a configuration change -- the current instance will go through its 5177 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5178 */ 5179 public void recreate() { 5180 if (mParent != null) { 5181 throw new IllegalStateException("Can only be called on top-level activity"); 5182 } 5183 if (Looper.myLooper() != mMainThread.getLooper()) { 5184 throw new IllegalStateException("Must be called from main thread"); 5185 } 5186 try { 5187 ActivityManagerNative.getDefault().requestActivityRelaunch(mToken); 5188 } catch (RemoteException e) { 5189 } 5190 } 5191 5192 /** 5193 * Finishes the current activity and specifies whether to remove the task associated with this 5194 * activity. 5195 */ 5196 private void finish(int finishTask) { 5197 if (mParent == null) { 5198 int resultCode; 5199 Intent resultData; 5200 synchronized (this) { 5201 resultCode = mResultCode; 5202 resultData = mResultData; 5203 } 5204 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5205 try { 5206 if (resultData != null) { 5207 resultData.prepareToLeaveProcess(this); 5208 } 5209 if (ActivityManagerNative.getDefault() 5210 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5211 mFinished = true; 5212 } 5213 } catch (RemoteException e) { 5214 // Empty 5215 } 5216 } else { 5217 mParent.finishFromChild(this); 5218 } 5219 } 5220 5221 /** 5222 * Call this when your activity is done and should be closed. The 5223 * ActivityResult is propagated back to whoever launched you via 5224 * onActivityResult(). 5225 */ 5226 public void finish() { 5227 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5228 } 5229 5230 /** 5231 * Finish this activity as well as all activities immediately below it 5232 * in the current task that have the same affinity. This is typically 5233 * used when an application can be launched on to another task (such as 5234 * from an ACTION_VIEW of a content type it understands) and the user 5235 * has used the up navigation to switch out of the current task and in 5236 * to its own task. In this case, if the user has navigated down into 5237 * any other activities of the second application, all of those should 5238 * be removed from the original task as part of the task switch. 5239 * 5240 * <p>Note that this finish does <em>not</em> allow you to deliver results 5241 * to the previous activity, and an exception will be thrown if you are trying 5242 * to do so.</p> 5243 */ 5244 public void finishAffinity() { 5245 if (mParent != null) { 5246 throw new IllegalStateException("Can not be called from an embedded activity"); 5247 } 5248 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5249 throw new IllegalStateException("Can not be called to deliver a result"); 5250 } 5251 try { 5252 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 5253 mFinished = true; 5254 } 5255 } catch (RemoteException e) { 5256 // Empty 5257 } 5258 } 5259 5260 /** 5261 * This is called when a child activity of this one calls its 5262 * {@link #finish} method. The default implementation simply calls 5263 * finish() on this activity (the parent), finishing the entire group. 5264 * 5265 * @param child The activity making the call. 5266 * 5267 * @see #finish 5268 */ 5269 public void finishFromChild(Activity child) { 5270 finish(); 5271 } 5272 5273 /** 5274 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5275 * to reverse its exit Transition. When the exit Transition completes, 5276 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5277 * immediately and the Activity exit Transition is run. 5278 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5279 */ 5280 public void finishAfterTransition() { 5281 if (!mActivityTransitionState.startExitBackTransition(this)) { 5282 finish(); 5283 } 5284 } 5285 5286 /** 5287 * Force finish another activity that you had previously started with 5288 * {@link #startActivityForResult}. 5289 * 5290 * @param requestCode The request code of the activity that you had 5291 * given to startActivityForResult(). If there are multiple 5292 * activities started with this request code, they 5293 * will all be finished. 5294 */ 5295 public void finishActivity(int requestCode) { 5296 if (mParent == null) { 5297 try { 5298 ActivityManagerNative.getDefault() 5299 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5300 } catch (RemoteException e) { 5301 // Empty 5302 } 5303 } else { 5304 mParent.finishActivityFromChild(this, requestCode); 5305 } 5306 } 5307 5308 /** 5309 * This is called when a child activity of this one calls its 5310 * finishActivity(). 5311 * 5312 * @param child The activity making the call. 5313 * @param requestCode Request code that had been used to start the 5314 * activity. 5315 */ 5316 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5317 try { 5318 ActivityManagerNative.getDefault() 5319 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5320 } catch (RemoteException e) { 5321 // Empty 5322 } 5323 } 5324 5325 /** 5326 * Call this when your activity is done and should be closed and the task should be completely 5327 * removed as a part of finishing the root activity of the task. 5328 */ 5329 public void finishAndRemoveTask() { 5330 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5331 } 5332 5333 /** 5334 * Ask that the local app instance of this activity be released to free up its memory. 5335 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5336 * a new instance of the activity will later be re-created if needed due to the user 5337 * navigating back to it. 5338 * 5339 * @return Returns true if the activity was in a state that it has started the process 5340 * of destroying its current instance; returns false if for any reason this could not 5341 * be done: it is currently visible to the user, it is already being destroyed, it is 5342 * being finished, it hasn't yet saved its state, etc. 5343 */ 5344 public boolean releaseInstance() { 5345 try { 5346 return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); 5347 } catch (RemoteException e) { 5348 // Empty 5349 } 5350 return false; 5351 } 5352 5353 /** 5354 * Called when an activity you launched exits, giving you the requestCode 5355 * you started it with, the resultCode it returned, and any additional 5356 * data from it. The <var>resultCode</var> will be 5357 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5358 * didn't return any result, or crashed during its operation. 5359 * 5360 * <p>You will receive this call immediately before onResume() when your 5361 * activity is re-starting. 5362 * 5363 * <p>This method is never invoked if your activity sets 5364 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5365 * <code>true</code>. 5366 * 5367 * @param requestCode The integer request code originally supplied to 5368 * startActivityForResult(), allowing you to identify who this 5369 * result came from. 5370 * @param resultCode The integer result code returned by the child activity 5371 * through its setResult(). 5372 * @param data An Intent, which can return result data to the caller 5373 * (various data can be attached to Intent "extras"). 5374 * 5375 * @see #startActivityForResult 5376 * @see #createPendingResult 5377 * @see #setResult(int) 5378 */ 5379 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5380 } 5381 5382 /** 5383 * Called when an activity you launched with an activity transition exposes this 5384 * Activity through a returning activity transition, giving you the resultCode 5385 * and any additional data from it. This method will only be called if the activity 5386 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5387 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5388 * 5389 * <p>The purpose of this function is to let the called Activity send a hint about 5390 * its state so that this underlying Activity can prepare to be exposed. A call to 5391 * this method does not guarantee that the called Activity has or will be exiting soon. 5392 * It only indicates that it will expose this Activity's Window and it has 5393 * some data to pass to prepare it.</p> 5394 * 5395 * @param resultCode The integer result code returned by the child activity 5396 * through its setResult(). 5397 * @param data An Intent, which can return result data to the caller 5398 * (various data can be attached to Intent "extras"). 5399 */ 5400 public void onActivityReenter(int resultCode, Intent data) { 5401 } 5402 5403 /** 5404 * Create a new PendingIntent object which you can hand to others 5405 * for them to use to send result data back to your 5406 * {@link #onActivityResult} callback. The created object will be either 5407 * one-shot (becoming invalid after a result is sent back) or multiple 5408 * (allowing any number of results to be sent through it). 5409 * 5410 * @param requestCode Private request code for the sender that will be 5411 * associated with the result data when it is returned. The sender can not 5412 * modify this value, allowing you to identify incoming results. 5413 * @param data Default data to supply in the result, which may be modified 5414 * by the sender. 5415 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5416 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5417 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5418 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5419 * or any of the flags as supported by 5420 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5421 * of the intent that can be supplied when the actual send happens. 5422 * 5423 * @return Returns an existing or new PendingIntent matching the given 5424 * parameters. May return null only if 5425 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5426 * supplied. 5427 * 5428 * @see PendingIntent 5429 */ 5430 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5431 @PendingIntent.Flags int flags) { 5432 String packageName = getPackageName(); 5433 try { 5434 data.prepareToLeaveProcess(this); 5435 IIntentSender target = 5436 ActivityManagerNative.getDefault().getIntentSender( 5437 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5438 mParent == null ? mToken : mParent.mToken, 5439 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5440 UserHandle.myUserId()); 5441 return target != null ? new PendingIntent(target) : null; 5442 } catch (RemoteException e) { 5443 // Empty 5444 } 5445 return null; 5446 } 5447 5448 /** 5449 * Change the desired orientation of this activity. If the activity 5450 * is currently in the foreground or otherwise impacting the screen 5451 * orientation, the screen will immediately be changed (possibly causing 5452 * the activity to be restarted). Otherwise, this will be used the next 5453 * time the activity is visible. 5454 * 5455 * @param requestedOrientation An orientation constant as used in 5456 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5457 */ 5458 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5459 if (mParent == null) { 5460 try { 5461 ActivityManagerNative.getDefault().setRequestedOrientation( 5462 mToken, requestedOrientation); 5463 } catch (RemoteException e) { 5464 // Empty 5465 } 5466 } else { 5467 mParent.setRequestedOrientation(requestedOrientation); 5468 } 5469 } 5470 5471 /** 5472 * Return the current requested orientation of the activity. This will 5473 * either be the orientation requested in its component's manifest, or 5474 * the last requested orientation given to 5475 * {@link #setRequestedOrientation(int)}. 5476 * 5477 * @return Returns an orientation constant as used in 5478 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5479 */ 5480 @ActivityInfo.ScreenOrientation 5481 public int getRequestedOrientation() { 5482 if (mParent == null) { 5483 try { 5484 return ActivityManagerNative.getDefault() 5485 .getRequestedOrientation(mToken); 5486 } catch (RemoteException e) { 5487 // Empty 5488 } 5489 } else { 5490 return mParent.getRequestedOrientation(); 5491 } 5492 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5493 } 5494 5495 /** 5496 * Return the identifier of the task this activity is in. This identifier 5497 * will remain the same for the lifetime of the activity. 5498 * 5499 * @return Task identifier, an opaque integer. 5500 */ 5501 public int getTaskId() { 5502 try { 5503 return ActivityManagerNative.getDefault() 5504 .getTaskForActivity(mToken, false); 5505 } catch (RemoteException e) { 5506 return -1; 5507 } 5508 } 5509 5510 /** 5511 * Return whether this activity is the root of a task. The root is the 5512 * first activity in a task. 5513 * 5514 * @return True if this is the root activity, else false. 5515 */ 5516 public boolean isTaskRoot() { 5517 try { 5518 return ActivityManagerNative.getDefault().getTaskForActivity(mToken, true) >= 0; 5519 } catch (RemoteException e) { 5520 return false; 5521 } 5522 } 5523 5524 /** 5525 * Move the task containing this activity to the back of the activity 5526 * stack. The activity's order within the task is unchanged. 5527 * 5528 * @param nonRoot If false then this only works if the activity is the root 5529 * of a task; if true it will work for any activity in 5530 * a task. 5531 * 5532 * @return If the task was moved (or it was already at the 5533 * back) true is returned, else false. 5534 */ 5535 public boolean moveTaskToBack(boolean nonRoot) { 5536 try { 5537 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 5538 mToken, nonRoot); 5539 } catch (RemoteException e) { 5540 // Empty 5541 } 5542 return false; 5543 } 5544 5545 /** 5546 * Returns class name for this activity with the package prefix removed. 5547 * This is the default name used to read and write settings. 5548 * 5549 * @return The local class name. 5550 */ 5551 @NonNull 5552 public String getLocalClassName() { 5553 final String pkg = getPackageName(); 5554 final String cls = mComponent.getClassName(); 5555 int packageLen = pkg.length(); 5556 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5557 || cls.charAt(packageLen) != '.') { 5558 return cls; 5559 } 5560 return cls.substring(packageLen+1); 5561 } 5562 5563 /** 5564 * Returns complete component name of this activity. 5565 * 5566 * @return Returns the complete component name for this activity 5567 */ 5568 public ComponentName getComponentName() 5569 { 5570 return mComponent; 5571 } 5572 5573 /** 5574 * Retrieve a {@link SharedPreferences} object for accessing preferences 5575 * that are private to this activity. This simply calls the underlying 5576 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5577 * class name as the preferences name. 5578 * 5579 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5580 * operation. 5581 * 5582 * @return Returns the single SharedPreferences instance that can be used 5583 * to retrieve and modify the preference values. 5584 */ 5585 public SharedPreferences getPreferences(int mode) { 5586 return getSharedPreferences(getLocalClassName(), mode); 5587 } 5588 5589 private void ensureSearchManager() { 5590 if (mSearchManager != null) { 5591 return; 5592 } 5593 5594 mSearchManager = new SearchManager(this, null); 5595 } 5596 5597 @Override 5598 public Object getSystemService(@ServiceName @NonNull String name) { 5599 if (getBaseContext() == null) { 5600 throw new IllegalStateException( 5601 "System services not available to Activities before onCreate()"); 5602 } 5603 5604 if (WINDOW_SERVICE.equals(name)) { 5605 return mWindowManager; 5606 } else if (SEARCH_SERVICE.equals(name)) { 5607 ensureSearchManager(); 5608 return mSearchManager; 5609 } 5610 return super.getSystemService(name); 5611 } 5612 5613 /** 5614 * Change the title associated with this activity. If this is a 5615 * top-level activity, the title for its window will change. If it 5616 * is an embedded activity, the parent can do whatever it wants 5617 * with it. 5618 */ 5619 public void setTitle(CharSequence title) { 5620 mTitle = title; 5621 onTitleChanged(title, mTitleColor); 5622 5623 if (mParent != null) { 5624 mParent.onChildTitleChanged(this, title); 5625 } 5626 } 5627 5628 /** 5629 * Change the title associated with this activity. If this is a 5630 * top-level activity, the title for its window will change. If it 5631 * is an embedded activity, the parent can do whatever it wants 5632 * with it. 5633 */ 5634 public void setTitle(int titleId) { 5635 setTitle(getText(titleId)); 5636 } 5637 5638 /** 5639 * Change the color of the title associated with this activity. 5640 * <p> 5641 * This method is deprecated starting in API Level 11 and replaced by action 5642 * bar styles. For information on styling the Action Bar, read the <a 5643 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5644 * guide. 5645 * 5646 * @deprecated Use action bar styles instead. 5647 */ 5648 @Deprecated 5649 public void setTitleColor(int textColor) { 5650 mTitleColor = textColor; 5651 onTitleChanged(mTitle, textColor); 5652 } 5653 5654 public final CharSequence getTitle() { 5655 return mTitle; 5656 } 5657 5658 public final int getTitleColor() { 5659 return mTitleColor; 5660 } 5661 5662 protected void onTitleChanged(CharSequence title, int color) { 5663 if (mTitleReady) { 5664 final Window win = getWindow(); 5665 if (win != null) { 5666 win.setTitle(title); 5667 if (color != 0) { 5668 win.setTitleColor(color); 5669 } 5670 } 5671 if (mActionBar != null) { 5672 mActionBar.setWindowTitle(title); 5673 } 5674 } 5675 } 5676 5677 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5678 } 5679 5680 /** 5681 * Sets information describing the task with this activity for presentation inside the Recents 5682 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5683 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5684 * for each property until a suitable value is found. For each task the taskDescription will be 5685 * returned in {@link android.app.ActivityManager.TaskDescription}. 5686 * 5687 * @see ActivityManager#getRecentTasks 5688 * @see android.app.ActivityManager.TaskDescription 5689 * 5690 * @param taskDescription The TaskDescription properties that describe the task with this activity 5691 */ 5692 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5693 if (mTaskDescription != taskDescription) { 5694 mTaskDescription.copyFrom(taskDescription); 5695 // Scale the icon down to something reasonable if it is provided 5696 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 5697 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5698 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, 5699 true); 5700 mTaskDescription.setIcon(icon); 5701 } 5702 } 5703 try { 5704 ActivityManagerNative.getDefault().setTaskDescription(mToken, mTaskDescription); 5705 } catch (RemoteException e) { 5706 } 5707 } 5708 5709 /** 5710 * Sets the visibility of the progress bar in the title. 5711 * <p> 5712 * In order for the progress bar to be shown, the feature must be requested 5713 * via {@link #requestWindowFeature(int)}. 5714 * 5715 * @param visible Whether to show the progress bars in the title. 5716 * @deprecated No longer supported starting in API 21. 5717 */ 5718 @Deprecated 5719 public final void setProgressBarVisibility(boolean visible) { 5720 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5721 Window.PROGRESS_VISIBILITY_OFF); 5722 } 5723 5724 /** 5725 * Sets the visibility of the indeterminate progress bar in the title. 5726 * <p> 5727 * In order for the progress bar to be shown, the feature must be requested 5728 * via {@link #requestWindowFeature(int)}. 5729 * 5730 * @param visible Whether to show the progress bars in the title. 5731 * @deprecated No longer supported starting in API 21. 5732 */ 5733 @Deprecated 5734 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5735 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5736 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5737 } 5738 5739 /** 5740 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5741 * is always indeterminate). 5742 * <p> 5743 * In order for the progress bar to be shown, the feature must be requested 5744 * via {@link #requestWindowFeature(int)}. 5745 * 5746 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5747 * @deprecated No longer supported starting in API 21. 5748 */ 5749 @Deprecated 5750 public final void setProgressBarIndeterminate(boolean indeterminate) { 5751 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5752 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5753 : Window.PROGRESS_INDETERMINATE_OFF); 5754 } 5755 5756 /** 5757 * Sets the progress for the progress bars in the title. 5758 * <p> 5759 * In order for the progress bar to be shown, the feature must be requested 5760 * via {@link #requestWindowFeature(int)}. 5761 * 5762 * @param progress The progress for the progress bar. Valid ranges are from 5763 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5764 * bar will be completely filled and will fade out. 5765 * @deprecated No longer supported starting in API 21. 5766 */ 5767 @Deprecated 5768 public final void setProgress(int progress) { 5769 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5770 } 5771 5772 /** 5773 * Sets the secondary progress for the progress bar in the title. This 5774 * progress is drawn between the primary progress (set via 5775 * {@link #setProgress(int)} and the background. It can be ideal for media 5776 * scenarios such as showing the buffering progress while the default 5777 * progress shows the play progress. 5778 * <p> 5779 * In order for the progress bar to be shown, the feature must be requested 5780 * via {@link #requestWindowFeature(int)}. 5781 * 5782 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5783 * 0 to 10000 (both inclusive). 5784 * @deprecated No longer supported starting in API 21. 5785 */ 5786 @Deprecated 5787 public final void setSecondaryProgress(int secondaryProgress) { 5788 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5789 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5790 } 5791 5792 /** 5793 * Suggests an audio stream whose volume should be changed by the hardware 5794 * volume controls. 5795 * <p> 5796 * The suggested audio stream will be tied to the window of this Activity. 5797 * Volume requests which are received while the Activity is in the 5798 * foreground will affect this stream. 5799 * <p> 5800 * It is not guaranteed that the hardware volume controls will always change 5801 * this stream's volume (for example, if a call is in progress, its stream's 5802 * volume may be changed instead). To reset back to the default, use 5803 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5804 * 5805 * @param streamType The type of the audio stream whose volume should be 5806 * changed by the hardware volume controls. 5807 */ 5808 public final void setVolumeControlStream(int streamType) { 5809 getWindow().setVolumeControlStream(streamType); 5810 } 5811 5812 /** 5813 * Gets the suggested audio stream whose volume should be changed by the 5814 * hardware volume controls. 5815 * 5816 * @return The suggested audio stream type whose volume should be changed by 5817 * the hardware volume controls. 5818 * @see #setVolumeControlStream(int) 5819 */ 5820 public final int getVolumeControlStream() { 5821 return getWindow().getVolumeControlStream(); 5822 } 5823 5824 /** 5825 * Sets a {@link MediaController} to send media keys and volume changes to. 5826 * <p> 5827 * The controller will be tied to the window of this Activity. Media key and 5828 * volume events which are received while the Activity is in the foreground 5829 * will be forwarded to the controller and used to invoke transport controls 5830 * or adjust the volume. This may be used instead of or in addition to 5831 * {@link #setVolumeControlStream} to affect a specific session instead of a 5832 * specific stream. 5833 * <p> 5834 * It is not guaranteed that the hardware volume controls will always change 5835 * this session's volume (for example, if a call is in progress, its 5836 * stream's volume may be changed instead). To reset back to the default use 5837 * null as the controller. 5838 * 5839 * @param controller The controller for the session which should receive 5840 * media keys and volume changes. 5841 */ 5842 public final void setMediaController(MediaController controller) { 5843 getWindow().setMediaController(controller); 5844 } 5845 5846 /** 5847 * Gets the controller which should be receiving media key and volume events 5848 * while this activity is in the foreground. 5849 * 5850 * @return The controller which should receive events. 5851 * @see #setMediaController(android.media.session.MediaController) 5852 */ 5853 public final MediaController getMediaController() { 5854 return getWindow().getMediaController(); 5855 } 5856 5857 /** 5858 * Runs the specified action on the UI thread. If the current thread is the UI 5859 * thread, then the action is executed immediately. If the current thread is 5860 * not the UI thread, the action is posted to the event queue of the UI thread. 5861 * 5862 * @param action the action to run on the UI thread 5863 */ 5864 public final void runOnUiThread(Runnable action) { 5865 if (Thread.currentThread() != mUiThread) { 5866 mHandler.post(action); 5867 } else { 5868 action.run(); 5869 } 5870 } 5871 5872 /** 5873 * Standard implementation of 5874 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5875 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5876 * This implementation does nothing and is for 5877 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5878 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5879 * 5880 * @see android.view.LayoutInflater#createView 5881 * @see android.view.Window#getLayoutInflater 5882 */ 5883 @Nullable 5884 public View onCreateView(String name, Context context, AttributeSet attrs) { 5885 return null; 5886 } 5887 5888 /** 5889 * Standard implementation of 5890 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5891 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5892 * This implementation handles <fragment> tags to embed fragments inside 5893 * of the activity. 5894 * 5895 * @see android.view.LayoutInflater#createView 5896 * @see android.view.Window#getLayoutInflater 5897 */ 5898 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5899 if (!"fragment".equals(name)) { 5900 return onCreateView(name, context, attrs); 5901 } 5902 5903 return mFragments.onCreateView(parent, name, context, attrs); 5904 } 5905 5906 /** 5907 * Print the Activity's state into the given stream. This gets invoked if 5908 * you run "adb shell dumpsys activity <activity_component_name>". 5909 * 5910 * @param prefix Desired prefix to prepend at each line of output. 5911 * @param fd The raw file descriptor that the dump is being sent to. 5912 * @param writer The PrintWriter to which you should dump your state. This will be 5913 * closed for you after you return. 5914 * @param args additional arguments to the dump request. 5915 */ 5916 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5917 dumpInner(prefix, fd, writer, args); 5918 } 5919 5920 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5921 writer.print(prefix); writer.print("Local Activity "); 5922 writer.print(Integer.toHexString(System.identityHashCode(this))); 5923 writer.println(" State:"); 5924 String innerPrefix = prefix + " "; 5925 writer.print(innerPrefix); writer.print("mResumed="); 5926 writer.print(mResumed); writer.print(" mStopped="); 5927 writer.print(mStopped); writer.print(" mFinished="); 5928 writer.println(mFinished); 5929 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5930 writer.println(mChangingConfigurations); 5931 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5932 writer.println(mCurrentConfig); 5933 5934 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 5935 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 5936 if (mVoiceInteractor != null) { 5937 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 5938 } 5939 5940 if (getWindow() != null && 5941 getWindow().peekDecorView() != null && 5942 getWindow().peekDecorView().getViewRootImpl() != null) { 5943 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5944 } 5945 5946 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5947 } 5948 5949 /** 5950 * Bit indicating that this activity is "immersive" and should not be 5951 * interrupted by notifications if possible. 5952 * 5953 * This value is initially set by the manifest property 5954 * <code>android:immersive</code> but may be changed at runtime by 5955 * {@link #setImmersive}. 5956 * 5957 * @see #setImmersive(boolean) 5958 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5959 */ 5960 public boolean isImmersive() { 5961 try { 5962 return ActivityManagerNative.getDefault().isImmersive(mToken); 5963 } catch (RemoteException e) { 5964 return false; 5965 } 5966 } 5967 5968 /** 5969 * Indication of whether this is the highest level activity in this task. Can be used to 5970 * determine whether an activity launched by this activity was placed in the same task or 5971 * another task. 5972 * 5973 * @return true if this is the topmost, non-finishing activity in its task. 5974 */ 5975 private boolean isTopOfTask() { 5976 if (mToken == null || mWindow == null) { 5977 return false; 5978 } 5979 try { 5980 return ActivityManagerNative.getDefault().isTopOfTask(getActivityToken()); 5981 } catch (RemoteException e) { 5982 return false; 5983 } 5984 } 5985 5986 /** 5987 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5988 * fullscreen opaque Activity. 5989 * <p> 5990 * Call this whenever the background of a translucent Activity has changed to become opaque. 5991 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5992 * <p> 5993 * This call has no effect on non-translucent activities or on activities with the 5994 * {@link android.R.attr#windowIsFloating} attribute. 5995 * 5996 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5997 * ActivityOptions) 5998 * @see TranslucentConversionListener 5999 * 6000 * @hide 6001 */ 6002 @SystemApi 6003 public void convertFromTranslucent() { 6004 try { 6005 mTranslucentCallback = null; 6006 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 6007 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 6008 } 6009 } catch (RemoteException e) { 6010 // pass 6011 } 6012 } 6013 6014 /** 6015 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 6016 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 6017 * <p> 6018 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 6019 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 6020 * be called indicating that it is safe to make this activity translucent again. Until 6021 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 6022 * behind the frontmost Activity will be indeterminate. 6023 * <p> 6024 * This call has no effect on non-translucent activities or on activities with the 6025 * {@link android.R.attr#windowIsFloating} attribute. 6026 * 6027 * @param callback the method to call when all visible Activities behind this one have been 6028 * drawn and it is safe to make this Activity translucent again. 6029 * @param options activity options delivered to the activity below this one. The options 6030 * are retrieved using {@link #getActivityOptions}. 6031 * @return <code>true</code> if Window was opaque and will become translucent or 6032 * <code>false</code> if window was translucent and no change needed to be made. 6033 * 6034 * @see #convertFromTranslucent() 6035 * @see TranslucentConversionListener 6036 * 6037 * @hide 6038 */ 6039 @SystemApi 6040 public boolean convertToTranslucent(TranslucentConversionListener callback, 6041 ActivityOptions options) { 6042 boolean drawComplete; 6043 try { 6044 mTranslucentCallback = callback; 6045 mChangeCanvasToTranslucent = 6046 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 6047 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6048 drawComplete = true; 6049 } catch (RemoteException e) { 6050 // Make callback return as though it timed out. 6051 mChangeCanvasToTranslucent = false; 6052 drawComplete = false; 6053 } 6054 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 6055 // Window is already translucent. 6056 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6057 } 6058 return mChangeCanvasToTranslucent; 6059 } 6060 6061 /** @hide */ 6062 void onTranslucentConversionComplete(boolean drawComplete) { 6063 if (mTranslucentCallback != null) { 6064 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6065 mTranslucentCallback = null; 6066 } 6067 if (mChangeCanvasToTranslucent) { 6068 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6069 } 6070 } 6071 6072 /** @hide */ 6073 public void onNewActivityOptions(ActivityOptions options) { 6074 mActivityTransitionState.setEnterActivityOptions(this, options); 6075 if (!mStopped) { 6076 mActivityTransitionState.enterReady(this); 6077 } 6078 } 6079 6080 /** 6081 * Retrieve the ActivityOptions passed in from the launching activity or passed back 6082 * from an activity launched by this activity in its call to {@link 6083 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 6084 * 6085 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6086 * @hide 6087 */ 6088 ActivityOptions getActivityOptions() { 6089 try { 6090 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 6091 } catch (RemoteException e) { 6092 } 6093 return null; 6094 } 6095 6096 /** 6097 * Activities that want to remain visible behind a translucent activity above them must call 6098 * this method anytime between the start of {@link #onResume()} and the return from 6099 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6100 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6101 * 6102 * <p>The actions of this call are reset each time that this activity is brought to the 6103 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6104 * to not have requested visible behind. Therefore, if you want this activity to continue to 6105 * be visible in the background you must call this method again. 6106 * 6107 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6108 * for dialog and translucent activities. 6109 * 6110 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6111 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6112 * 6113 * <p>False will be returned any time this method is called between the return of onPause and 6114 * the next call to onResume. 6115 * 6116 * @param visible true to notify the system that the activity wishes to be visible behind other 6117 * translucent activities, false to indicate otherwise. Resources must be 6118 * released when passing false to this method. 6119 * @return the resulting visibiity state. If true the activity will remain visible beyond 6120 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6121 * then the activity may not count on being visible behind other translucent activities, 6122 * and must stop any media playback and release resources. 6123 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6124 * the return value must be checked. 6125 * 6126 * @see #onVisibleBehindCanceled() 6127 * @see #onBackgroundVisibleBehindChanged(boolean) 6128 */ 6129 public boolean requestVisibleBehind(boolean visible) { 6130 if (!mResumed) { 6131 // Do not permit paused or stopped activities to do this. 6132 visible = false; 6133 } 6134 try { 6135 mVisibleBehind = ActivityManagerNative.getDefault() 6136 .requestVisibleBehind(mToken, visible) && visible; 6137 } catch (RemoteException e) { 6138 mVisibleBehind = false; 6139 } 6140 return mVisibleBehind; 6141 } 6142 6143 /** 6144 * Called when a translucent activity over this activity is becoming opaque or another 6145 * activity is being launched. Activities that override this method must call 6146 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6147 * 6148 * <p>When this method is called the activity has 500 msec to release any resources it may be 6149 * using while visible in the background. 6150 * If the activity has not returned from this method in 500 msec the system will destroy 6151 * the activity and kill the process in order to recover the resources for another 6152 * process. Otherwise {@link #onStop()} will be called following return. 6153 * 6154 * @see #requestVisibleBehind(boolean) 6155 * @see #onBackgroundVisibleBehindChanged(boolean) 6156 */ 6157 @CallSuper 6158 public void onVisibleBehindCanceled() { 6159 mCalled = true; 6160 } 6161 6162 /** 6163 * Translucent activities may call this to determine if there is an activity below them that 6164 * is currently set to be visible in the background. 6165 * 6166 * @return true if an activity below is set to visible according to the most recent call to 6167 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6168 * 6169 * @see #requestVisibleBehind(boolean) 6170 * @see #onVisibleBehindCanceled() 6171 * @see #onBackgroundVisibleBehindChanged(boolean) 6172 * @hide 6173 */ 6174 @SystemApi 6175 public boolean isBackgroundVisibleBehind() { 6176 try { 6177 return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); 6178 } catch (RemoteException e) { 6179 } 6180 return false; 6181 } 6182 6183 /** 6184 * The topmost foreground activity will receive this call when the background visibility state 6185 * of the activity below it changes. 6186 * 6187 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6188 * due to a background activity finishing itself. 6189 * 6190 * @param visible true if a background activity is visible, false otherwise. 6191 * 6192 * @see #requestVisibleBehind(boolean) 6193 * @see #onVisibleBehindCanceled() 6194 * @hide 6195 */ 6196 @SystemApi 6197 public void onBackgroundVisibleBehindChanged(boolean visible) { 6198 } 6199 6200 /** 6201 * Activities cannot draw during the period that their windows are animating in. In order 6202 * to know when it is safe to begin drawing they can override this method which will be 6203 * called when the entering animation has completed. 6204 */ 6205 public void onEnterAnimationComplete() { 6206 } 6207 6208 /** 6209 * @hide 6210 */ 6211 public void dispatchEnterAnimationComplete() { 6212 onEnterAnimationComplete(); 6213 if (getWindow() != null && getWindow().getDecorView() != null) { 6214 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6215 } 6216 } 6217 6218 /** 6219 * Adjust the current immersive mode setting. 6220 * 6221 * Note that changing this value will have no effect on the activity's 6222 * {@link android.content.pm.ActivityInfo} structure; that is, if 6223 * <code>android:immersive</code> is set to <code>true</code> 6224 * in the application's manifest entry for this activity, the {@link 6225 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6226 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6227 * FLAG_IMMERSIVE} bit set. 6228 * 6229 * @see #isImmersive() 6230 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6231 */ 6232 public void setImmersive(boolean i) { 6233 try { 6234 ActivityManagerNative.getDefault().setImmersive(mToken, i); 6235 } catch (RemoteException e) { 6236 // pass 6237 } 6238 } 6239 6240 /** 6241 * Enable or disable virtual reality (VR) mode for this Activity. 6242 * 6243 * <p>VR mode is a hint to Android system to switch to a mode optimized for VR applications 6244 * while this Activity has user focus.</p> 6245 * 6246 * <p>It is recommended that applications additionally declare 6247 * {@link android.R.attr#enableVrMode} in their manifest to allow for smooth activity 6248 * transitions when switching between VR activities.</p> 6249 * 6250 * <p>If the requested {@link android.service.vr.VrListenerService} component is not available, 6251 * VR mode will not be started. Developers can handle this case as follows:</p> 6252 * 6253 * <pre> 6254 * String servicePackage = "com.whatever.app"; 6255 * String serviceClass = "com.whatever.app.MyVrListenerService"; 6256 * 6257 * // Name of the component of the VrListenerService to start. 6258 * ComponentName serviceComponent = new ComponentName(servicePackage, serviceClass); 6259 * 6260 * try { 6261 * setVrModeEnabled(true, myComponentName); 6262 * } catch (PackageManager.NameNotFoundException e) { 6263 * List<ApplicationInfo> installed = getPackageManager().getInstalledApplications(0); 6264 * boolean isInstalled = false; 6265 * for (ApplicationInfo app : installed) { 6266 * if (app.packageName.equals(servicePackage)) { 6267 * isInstalled = true; 6268 * break; 6269 * } 6270 * } 6271 * if (isInstalled) { 6272 * // Package is installed, but not enabled in Settings. Let user enable it. 6273 * startActivity(new Intent(Settings.ACTION_VR_LISTENER_SETTINGS)); 6274 * } else { 6275 * // Package is not installed. Send an intent to download this. 6276 * sentIntentToLaunchAppStore(servicePackage); 6277 * } 6278 * } 6279 * </pre> 6280 * 6281 * @param enabled {@code true} to enable this mode. 6282 * @param requestedComponent the name of the component to use as a 6283 * {@link android.service.vr.VrListenerService} while VR mode is enabled. 6284 * 6285 * @throws android.content.pm.PackageManager.NameNotFoundException if the given component 6286 * to run as a {@link android.service.vr.VrListenerService} is not installed, or has 6287 * not been enabled in user settings. 6288 * 6289 * @see android.content.pm.PackageManager#FEATURE_VR_MODE 6290 * @see android.content.pm.PackageManager#FEATURE_VR_MODE_HIGH_PERFORMANCE 6291 * @see android.service.vr.VrListenerService 6292 * @see android.provider.Settings#ACTION_VR_LISTENER_SETTINGS 6293 * @see android.R.attr#enableVrMode 6294 */ 6295 public void setVrModeEnabled(boolean enabled, @NonNull ComponentName requestedComponent) 6296 throws PackageManager.NameNotFoundException { 6297 try { 6298 if (ActivityManagerNative.getDefault().setVrMode(mToken, enabled, requestedComponent) 6299 != 0) { 6300 throw new PackageManager.NameNotFoundException( 6301 requestedComponent.flattenToString()); 6302 } 6303 } catch (RemoteException e) { 6304 // pass 6305 } 6306 } 6307 6308 /** 6309 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6310 * 6311 * @param callback Callback that will manage lifecycle events for this action mode 6312 * @return The ActionMode that was started, or null if it was canceled 6313 * 6314 * @see ActionMode 6315 */ 6316 @Nullable 6317 public ActionMode startActionMode(ActionMode.Callback callback) { 6318 return mWindow.getDecorView().startActionMode(callback); 6319 } 6320 6321 /** 6322 * Start an action mode of the given type. 6323 * 6324 * @param callback Callback that will manage lifecycle events for this action mode 6325 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6326 * @return The ActionMode that was started, or null if it was canceled 6327 * 6328 * @see ActionMode 6329 */ 6330 @Nullable 6331 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6332 return mWindow.getDecorView().startActionMode(callback, type); 6333 } 6334 6335 /** 6336 * Give the Activity a chance to control the UI for an action mode requested 6337 * by the system. 6338 * 6339 * <p>Note: If you are looking for a notification callback that an action mode 6340 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6341 * 6342 * @param callback The callback that should control the new action mode 6343 * @return The new action mode, or <code>null</code> if the activity does not want to 6344 * provide special handling for this action mode. (It will be handled by the system.) 6345 */ 6346 @Nullable 6347 @Override 6348 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6349 // Only Primary ActionModes are represented in the ActionBar. 6350 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6351 initWindowDecorActionBar(); 6352 if (mActionBar != null) { 6353 return mActionBar.startActionMode(callback); 6354 } 6355 } 6356 return null; 6357 } 6358 6359 /** 6360 * {@inheritDoc} 6361 */ 6362 @Nullable 6363 @Override 6364 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6365 try { 6366 mActionModeTypeStarting = type; 6367 return onWindowStartingActionMode(callback); 6368 } finally { 6369 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6370 } 6371 } 6372 6373 /** 6374 * Notifies the Activity that an action mode has been started. 6375 * Activity subclasses overriding this method should call the superclass implementation. 6376 * 6377 * @param mode The new action mode. 6378 */ 6379 @CallSuper 6380 @Override 6381 public void onActionModeStarted(ActionMode mode) { 6382 } 6383 6384 /** 6385 * Notifies the activity that an action mode has finished. 6386 * Activity subclasses overriding this method should call the superclass implementation. 6387 * 6388 * @param mode The action mode that just finished. 6389 */ 6390 @CallSuper 6391 @Override 6392 public void onActionModeFinished(ActionMode mode) { 6393 } 6394 6395 /** 6396 * Returns true if the app should recreate the task when navigating 'up' from this activity 6397 * by using targetIntent. 6398 * 6399 * <p>If this method returns false the app can trivially call 6400 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6401 * up navigation. If this method returns false, the app should synthesize a new task stack 6402 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6403 * 6404 * @param targetIntent An intent representing the target destination for up navigation 6405 * @return true if navigating up should recreate a new task stack, false if the same task 6406 * should be used for the destination 6407 */ 6408 public boolean shouldUpRecreateTask(Intent targetIntent) { 6409 try { 6410 PackageManager pm = getPackageManager(); 6411 ComponentName cn = targetIntent.getComponent(); 6412 if (cn == null) { 6413 cn = targetIntent.resolveActivity(pm); 6414 } 6415 ActivityInfo info = pm.getActivityInfo(cn, 0); 6416 if (info.taskAffinity == null) { 6417 return false; 6418 } 6419 return ActivityManagerNative.getDefault() 6420 .shouldUpRecreateTask(mToken, info.taskAffinity); 6421 } catch (RemoteException e) { 6422 return false; 6423 } catch (NameNotFoundException e) { 6424 return false; 6425 } 6426 } 6427 6428 /** 6429 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6430 * in the process. If the activity indicated by upIntent already exists in the task's history, 6431 * this activity and all others before the indicated activity in the history stack will be 6432 * finished. 6433 * 6434 * <p>If the indicated activity does not appear in the history stack, this will finish 6435 * each activity in this task until the root activity of the task is reached, resulting in 6436 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6437 * when an activity may be reached by a path not passing through a canonical parent 6438 * activity.</p> 6439 * 6440 * <p>This method should be used when performing up navigation from within the same task 6441 * as the destination. If up navigation should cross tasks in some cases, see 6442 * {@link #shouldUpRecreateTask(Intent)}.</p> 6443 * 6444 * @param upIntent An intent representing the target destination for up navigation 6445 * 6446 * @return true if up navigation successfully reached the activity indicated by upIntent and 6447 * upIntent was delivered to it. false if an instance of the indicated activity could 6448 * not be found and this activity was simply finished normally. 6449 */ 6450 public boolean navigateUpTo(Intent upIntent) { 6451 if (mParent == null) { 6452 ComponentName destInfo = upIntent.getComponent(); 6453 if (destInfo == null) { 6454 destInfo = upIntent.resolveActivity(getPackageManager()); 6455 if (destInfo == null) { 6456 return false; 6457 } 6458 upIntent = new Intent(upIntent); 6459 upIntent.setComponent(destInfo); 6460 } 6461 int resultCode; 6462 Intent resultData; 6463 synchronized (this) { 6464 resultCode = mResultCode; 6465 resultData = mResultData; 6466 } 6467 if (resultData != null) { 6468 resultData.prepareToLeaveProcess(this); 6469 } 6470 try { 6471 upIntent.prepareToLeaveProcess(this); 6472 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 6473 resultCode, resultData); 6474 } catch (RemoteException e) { 6475 return false; 6476 } 6477 } else { 6478 return mParent.navigateUpToFromChild(this, upIntent); 6479 } 6480 } 6481 6482 /** 6483 * This is called when a child activity of this one calls its 6484 * {@link #navigateUpTo} method. The default implementation simply calls 6485 * navigateUpTo(upIntent) on this activity (the parent). 6486 * 6487 * @param child The activity making the call. 6488 * @param upIntent An intent representing the target destination for up navigation 6489 * 6490 * @return true if up navigation successfully reached the activity indicated by upIntent and 6491 * upIntent was delivered to it. false if an instance of the indicated activity could 6492 * not be found and this activity was simply finished normally. 6493 */ 6494 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6495 return navigateUpTo(upIntent); 6496 } 6497 6498 /** 6499 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6500 * this activity's logical parent. The logical parent is named in the application's manifest 6501 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6502 * Activity subclasses may override this method to modify the Intent returned by 6503 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6504 * the parent intent entirely. 6505 * 6506 * @return a new Intent targeting the defined parent of this activity or null if 6507 * there is no valid parent. 6508 */ 6509 @Nullable 6510 public Intent getParentActivityIntent() { 6511 final String parentName = mActivityInfo.parentActivityName; 6512 if (TextUtils.isEmpty(parentName)) { 6513 return null; 6514 } 6515 6516 // If the parent itself has no parent, generate a main activity intent. 6517 final ComponentName target = new ComponentName(this, parentName); 6518 try { 6519 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6520 final String parentActivity = parentInfo.parentActivityName; 6521 final Intent parentIntent = parentActivity == null 6522 ? Intent.makeMainActivity(target) 6523 : new Intent().setComponent(target); 6524 return parentIntent; 6525 } catch (NameNotFoundException e) { 6526 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6527 "' in manifest"); 6528 return null; 6529 } 6530 } 6531 6532 /** 6533 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6534 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6535 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6536 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6537 * 6538 * @param callback Used to manipulate shared element transitions on the launched Activity. 6539 */ 6540 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6541 if (callback == null) { 6542 callback = SharedElementCallback.NULL_CALLBACK; 6543 } 6544 mEnterTransitionListener = callback; 6545 } 6546 6547 /** 6548 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6549 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6550 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6551 * calls will only come when returning from the started Activity. 6552 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6553 * 6554 * @param callback Used to manipulate shared element transitions on the launching Activity. 6555 */ 6556 public void setExitSharedElementCallback(SharedElementCallback callback) { 6557 if (callback == null) { 6558 callback = SharedElementCallback.NULL_CALLBACK; 6559 } 6560 mExitTransitionListener = callback; 6561 } 6562 6563 /** 6564 * Postpone the entering activity transition when Activity was started with 6565 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6566 * android.util.Pair[])}. 6567 * <p>This method gives the Activity the ability to delay starting the entering and 6568 * shared element transitions until all data is loaded. Until then, the Activity won't 6569 * draw into its window, leaving the window transparent. This may also cause the 6570 * returning animation to be delayed until data is ready. This method should be 6571 * called in {@link #onCreate(android.os.Bundle)} or in 6572 * {@link #onActivityReenter(int, android.content.Intent)}. 6573 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6574 * start the transitions. If the Activity did not use 6575 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6576 * android.util.Pair[])}, then this method does nothing.</p> 6577 */ 6578 public void postponeEnterTransition() { 6579 mActivityTransitionState.postponeEnterTransition(); 6580 } 6581 6582 /** 6583 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6584 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6585 * to have your Activity start drawing. 6586 */ 6587 public void startPostponedEnterTransition() { 6588 mActivityTransitionState.startPostponedEnterTransition(); 6589 } 6590 6591 /** 6592 * Create {@link DragAndDropPermissions} object bound to this activity and controlling the 6593 * access permissions for content URIs associated with the {@link DragEvent}. 6594 * @param event Drag event 6595 * @return The {@link DragAndDropPermissions} object used to control access to the content URIs. 6596 * Null if no content URIs are associated with the event or if permissions could not be granted. 6597 */ 6598 public DragAndDropPermissions requestDragAndDropPermissions(DragEvent event) { 6599 DragAndDropPermissions dragAndDropPermissions = DragAndDropPermissions.obtain(event); 6600 if (dragAndDropPermissions != null && dragAndDropPermissions.take(getActivityToken())) { 6601 return dragAndDropPermissions; 6602 } 6603 return null; 6604 } 6605 6606 // ------------------ Internal API ------------------ 6607 6608 final void setParent(Activity parent) { 6609 mParent = parent; 6610 } 6611 6612 final void attach(Context context, ActivityThread aThread, 6613 Instrumentation instr, IBinder token, int ident, 6614 Application application, Intent intent, ActivityInfo info, 6615 CharSequence title, Activity parent, String id, 6616 NonConfigurationInstances lastNonConfigurationInstances, 6617 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 6618 Window window) { 6619 attachBaseContext(context); 6620 6621 mFragments.attachHost(null /*parent*/); 6622 6623 mWindow = new PhoneWindow(this, window); 6624 mWindow.setWindowControllerCallback(this); 6625 mWindow.setCallback(this); 6626 mWindow.setOnWindowDismissedCallback(this); 6627 mWindow.getLayoutInflater().setPrivateFactory(this); 6628 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 6629 mWindow.setSoftInputMode(info.softInputMode); 6630 } 6631 if (info.uiOptions != 0) { 6632 mWindow.setUiOptions(info.uiOptions); 6633 } 6634 mUiThread = Thread.currentThread(); 6635 6636 mMainThread = aThread; 6637 mInstrumentation = instr; 6638 mToken = token; 6639 mIdent = ident; 6640 mApplication = application; 6641 mIntent = intent; 6642 mReferrer = referrer; 6643 mComponent = intent.getComponent(); 6644 mActivityInfo = info; 6645 mTitle = title; 6646 mParent = parent; 6647 mEmbeddedID = id; 6648 mLastNonConfigurationInstances = lastNonConfigurationInstances; 6649 if (voiceInteractor != null) { 6650 if (lastNonConfigurationInstances != null) { 6651 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 6652 } else { 6653 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 6654 Looper.myLooper()); 6655 } 6656 } 6657 6658 mWindow.setWindowManager( 6659 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 6660 mToken, mComponent.flattenToString(), 6661 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 6662 if (mParent != null) { 6663 mWindow.setContainer(mParent.getWindow()); 6664 } 6665 mWindowManager = mWindow.getWindowManager(); 6666 mCurrentConfig = config; 6667 } 6668 6669 /** @hide */ 6670 public final IBinder getActivityToken() { 6671 return mParent != null ? mParent.getActivityToken() : mToken; 6672 } 6673 6674 final void performCreateCommon() { 6675 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 6676 com.android.internal.R.styleable.Window_windowNoDisplay, false); 6677 mFragments.dispatchActivityCreated(); 6678 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6679 } 6680 6681 final void performCreate(Bundle icicle) { 6682 restoreHasCurrentPermissionRequest(icicle); 6683 onCreate(icicle); 6684 mActivityTransitionState.readState(icicle); 6685 performCreateCommon(); 6686 } 6687 6688 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 6689 restoreHasCurrentPermissionRequest(icicle); 6690 onCreate(icicle, persistentState); 6691 mActivityTransitionState.readState(icicle); 6692 performCreateCommon(); 6693 } 6694 6695 final void performStart() { 6696 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6697 mFragments.noteStateNotSaved(); 6698 mCalled = false; 6699 mFragments.execPendingActions(); 6700 mInstrumentation.callActivityOnStart(this); 6701 if (!mCalled) { 6702 throw new SuperNotCalledException( 6703 "Activity " + mComponent.toShortString() + 6704 " did not call through to super.onStart()"); 6705 } 6706 mFragments.dispatchStart(); 6707 mFragments.reportLoaderStart(); 6708 6709 // This property is set for all builds except final release 6710 boolean isDlwarningEnabled = SystemProperties.getInt("ro.bionic.ld.warning", 0) == 1; 6711 boolean isAppDebuggable = 6712 (mApplication.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 6713 6714 if (isAppDebuggable || isDlwarningEnabled) { 6715 String dlwarning = getDlWarning(); 6716 if (dlwarning != null) { 6717 String appName = getApplicationInfo().loadLabel(getPackageManager()) 6718 .toString(); 6719 String warning = "Detected problems with app native libraries\n" + 6720 "(please consult log for detail):\n" + dlwarning; 6721 if (isAppDebuggable) { 6722 new AlertDialog.Builder(this). 6723 setTitle(appName). 6724 setMessage(warning). 6725 setPositiveButton(android.R.string.ok, null). 6726 setCancelable(false). 6727 show(); 6728 } else { 6729 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 6730 } 6731 } 6732 } 6733 6734 mActivityTransitionState.enterReady(this); 6735 } 6736 6737 final void performRestart() { 6738 mFragments.noteStateNotSaved(); 6739 6740 if (mToken != null && mParent == null) { 6741 // No need to check mStopped, the roots will check if they were actually stopped. 6742 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 6743 } 6744 6745 if (mStopped) { 6746 mStopped = false; 6747 6748 synchronized (mManagedCursors) { 6749 final int N = mManagedCursors.size(); 6750 for (int i=0; i<N; i++) { 6751 ManagedCursor mc = mManagedCursors.get(i); 6752 if (mc.mReleased || mc.mUpdated) { 6753 if (!mc.mCursor.requery()) { 6754 if (getApplicationInfo().targetSdkVersion 6755 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 6756 throw new IllegalStateException( 6757 "trying to requery an already closed cursor " 6758 + mc.mCursor); 6759 } 6760 } 6761 mc.mReleased = false; 6762 mc.mUpdated = false; 6763 } 6764 } 6765 } 6766 6767 mCalled = false; 6768 mInstrumentation.callActivityOnRestart(this); 6769 if (!mCalled) { 6770 throw new SuperNotCalledException( 6771 "Activity " + mComponent.toShortString() + 6772 " did not call through to super.onRestart()"); 6773 } 6774 performStart(); 6775 } 6776 } 6777 6778 final void performResume() { 6779 performRestart(); 6780 6781 mFragments.execPendingActions(); 6782 6783 mLastNonConfigurationInstances = null; 6784 6785 mCalled = false; 6786 // mResumed is set by the instrumentation 6787 mInstrumentation.callActivityOnResume(this); 6788 if (!mCalled) { 6789 throw new SuperNotCalledException( 6790 "Activity " + mComponent.toShortString() + 6791 " did not call through to super.onResume()"); 6792 } 6793 6794 // invisible activities must be finished before onResume() completes 6795 if (!mVisibleFromClient && !mFinished) { 6796 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 6797 if (getApplicationInfo().targetSdkVersion 6798 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 6799 throw new IllegalStateException( 6800 "Activity " + mComponent.toShortString() + 6801 " did not call finish() prior to onResume() completing"); 6802 } 6803 } 6804 6805 // Now really resume, and install the current status bar and menu. 6806 mCalled = false; 6807 6808 mFragments.dispatchResume(); 6809 mFragments.execPendingActions(); 6810 6811 onPostResume(); 6812 if (!mCalled) { 6813 throw new SuperNotCalledException( 6814 "Activity " + mComponent.toShortString() + 6815 " did not call through to super.onPostResume()"); 6816 } 6817 } 6818 6819 final void performPause() { 6820 mDoReportFullyDrawn = false; 6821 mFragments.dispatchPause(); 6822 mCalled = false; 6823 onPause(); 6824 mResumed = false; 6825 if (!mCalled && getApplicationInfo().targetSdkVersion 6826 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 6827 throw new SuperNotCalledException( 6828 "Activity " + mComponent.toShortString() + 6829 " did not call through to super.onPause()"); 6830 } 6831 mResumed = false; 6832 } 6833 6834 final void performUserLeaving() { 6835 onUserInteraction(); 6836 onUserLeaveHint(); 6837 } 6838 6839 final void performStop(boolean preserveWindow) { 6840 mDoReportFullyDrawn = false; 6841 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 6842 6843 if (!mStopped) { 6844 if (mWindow != null) { 6845 mWindow.closeAllPanels(); 6846 } 6847 6848 // If we're preserving the window, don't setStoppedState to true, since we 6849 // need the window started immediately again. Stopping the window will 6850 // destroys hardware resources and causes flicker. 6851 if (!preserveWindow && mToken != null && mParent == null) { 6852 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 6853 } 6854 6855 mFragments.dispatchStop(); 6856 6857 mCalled = false; 6858 mInstrumentation.callActivityOnStop(this); 6859 if (!mCalled) { 6860 throw new SuperNotCalledException( 6861 "Activity " + mComponent.toShortString() + 6862 " did not call through to super.onStop()"); 6863 } 6864 6865 synchronized (mManagedCursors) { 6866 final int N = mManagedCursors.size(); 6867 for (int i=0; i<N; i++) { 6868 ManagedCursor mc = mManagedCursors.get(i); 6869 if (!mc.mReleased) { 6870 mc.mCursor.deactivate(); 6871 mc.mReleased = true; 6872 } 6873 } 6874 } 6875 6876 mStopped = true; 6877 } 6878 mResumed = false; 6879 } 6880 6881 final void performDestroy() { 6882 mDestroyed = true; 6883 mWindow.destroy(); 6884 mFragments.dispatchDestroy(); 6885 onDestroy(); 6886 mFragments.doLoaderDestroy(); 6887 if (mVoiceInteractor != null) { 6888 mVoiceInteractor.detachActivity(); 6889 } 6890 } 6891 6892 final void dispatchMultiWindowModeChanged(boolean isInMultiWindowMode) { 6893 if (DEBUG_LIFECYCLE) Slog.v(TAG, 6894 "dispatchMultiWindowModeChanged " + this + ": " + isInMultiWindowMode); 6895 mFragments.dispatchMultiWindowModeChanged(isInMultiWindowMode); 6896 if (mWindow != null) { 6897 mWindow.onMultiWindowModeChanged(); 6898 } 6899 onMultiWindowModeChanged(isInMultiWindowMode); 6900 } 6901 6902 final void dispatchPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 6903 if (DEBUG_LIFECYCLE) Slog.v(TAG, 6904 "dispatchPictureInPictureModeChanged " + this + ": " + isInPictureInPictureMode); 6905 mFragments.dispatchPictureInPictureModeChanged(isInPictureInPictureMode); 6906 onPictureInPictureModeChanged(isInPictureInPictureMode); 6907 } 6908 6909 /** 6910 * @hide 6911 */ 6912 public final boolean isResumed() { 6913 return mResumed; 6914 } 6915 6916 private void storeHasCurrentPermissionRequest(Bundle bundle) { 6917 if (bundle != null && mHasCurrentPermissionsRequest) { 6918 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 6919 } 6920 } 6921 6922 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 6923 if (bundle != null) { 6924 mHasCurrentPermissionsRequest = bundle.getBoolean( 6925 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 6926 } 6927 } 6928 6929 void dispatchActivityResult(String who, int requestCode, 6930 int resultCode, Intent data) { 6931 if (false) Log.v( 6932 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 6933 + ", resCode=" + resultCode + ", data=" + data); 6934 mFragments.noteStateNotSaved(); 6935 if (who == null) { 6936 onActivityResult(requestCode, resultCode, data); 6937 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 6938 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 6939 if (TextUtils.isEmpty(who)) { 6940 dispatchRequestPermissionsResult(requestCode, data); 6941 } else { 6942 Fragment frag = mFragments.findFragmentByWho(who); 6943 if (frag != null) { 6944 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 6945 } 6946 } 6947 } else if (who.startsWith("@android:view:")) { 6948 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 6949 getActivityToken()); 6950 for (ViewRootImpl viewRoot : views) { 6951 if (viewRoot.getView() != null 6952 && viewRoot.getView().dispatchActivityResult( 6953 who, requestCode, resultCode, data)) { 6954 return; 6955 } 6956 } 6957 } else { 6958 Fragment frag = mFragments.findFragmentByWho(who); 6959 if (frag != null) { 6960 frag.onActivityResult(requestCode, resultCode, data); 6961 } 6962 } 6963 } 6964 6965 /** 6966 * Request to put this Activity in a mode where the user is locked to the 6967 * current task. 6968 * 6969 * This will prevent the user from launching other apps, going to settings, or reaching the 6970 * home screen. This does not include those apps whose {@link android.R.attr#lockTaskMode} 6971 * values permit launching while locked. 6972 * 6973 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true or 6974 * lockTaskMode=lockTaskModeAlways for this component then the app will go directly into 6975 * Lock Task mode. The user will not be able to exit this mode until 6976 * {@link Activity#stopLockTask()} is called. 6977 * 6978 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 6979 * then the system will prompt the user with a dialog requesting permission to enter 6980 * this mode. When entered through this method the user can exit at any time through 6981 * an action described by the request dialog. Calling stopLockTask will also exit the 6982 * mode. 6983 * 6984 * @see android.R.attr#lockTaskMode 6985 */ 6986 public void startLockTask() { 6987 try { 6988 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 6989 } catch (RemoteException e) { 6990 } 6991 } 6992 6993 /** 6994 * Allow the user to switch away from the current task. 6995 * 6996 * Called to end the mode started by {@link Activity#startLockTask}. This 6997 * can only be called by activities that have successfully called 6998 * startLockTask previously. 6999 * 7000 * This will allow the user to exit this app and move onto other activities. 7001 * <p>Note: This method should only be called when the activity is user-facing. That is, 7002 * between onResume() and onPause(). 7003 * <p>Note: If there are other tasks below this one that are also locked then calling this 7004 * method will immediately finish this task and resume the previous locked one, remaining in 7005 * lockTask mode. 7006 * 7007 * @see android.R.attr#lockTaskMode 7008 * @see ActivityManager#getLockTaskModeState() 7009 */ 7010 public void stopLockTask() { 7011 try { 7012 ActivityManagerNative.getDefault().stopLockTaskMode(); 7013 } catch (RemoteException e) { 7014 } 7015 } 7016 7017 /** 7018 * Shows the user the system defined message for telling the user how to exit 7019 * lock task mode. The task containing this activity must be in lock task mode at the time 7020 * of this call for the message to be displayed. 7021 */ 7022 public void showLockTaskEscapeMessage() { 7023 try { 7024 ActivityManagerNative.getDefault().showLockTaskEscapeMessage(mToken); 7025 } catch (RemoteException e) { 7026 } 7027 } 7028 7029 /** 7030 * Check whether the caption on freeform windows is displayed directly on the content. 7031 * 7032 * @return True if caption is displayed on content, false if it pushes the content down. 7033 * 7034 * @see {@link #setOverlayWithDecorCaptionEnabled(boolean)} 7035 */ 7036 public boolean isOverlayWithDecorCaptionEnabled() { 7037 return mWindow.isOverlayWithDecorCaptionEnabled(); 7038 } 7039 7040 /** 7041 * Set whether the caption should displayed directly on the content rather than push it down. 7042 * 7043 * This affects only freeform windows since they display the caption and only the main 7044 * window of the activity. The caption is used to drag the window around and also shows 7045 * maximize and close action buttons. 7046 */ 7047 public void setOverlayWithDecorCaptionEnabled(boolean enabled) { 7048 mWindow.setOverlayWithDecorCaptionEnabled(enabled); 7049 } 7050 7051 /** 7052 * Interface for informing a translucent {@link Activity} once all visible activities below it 7053 * have completed drawing. This is necessary only after an {@link Activity} has been made 7054 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 7055 * translucent again following a call to {@link 7056 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 7057 * ActivityOptions)} 7058 * 7059 * @hide 7060 */ 7061 @SystemApi 7062 public interface TranslucentConversionListener { 7063 /** 7064 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 7065 * below the top one have been redrawn. Following this callback it is safe to make the top 7066 * Activity translucent because the underlying Activity has been drawn. 7067 * 7068 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 7069 * occurred waiting for the Activity to complete drawing. 7070 * 7071 * @see Activity#convertFromTranslucent() 7072 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 7073 */ 7074 public void onTranslucentConversionComplete(boolean drawComplete); 7075 } 7076 7077 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 7078 mHasCurrentPermissionsRequest = false; 7079 // If the package installer crashed we may have not data - best effort. 7080 String[] permissions = (data != null) ? data.getStringArrayExtra( 7081 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7082 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7083 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7084 onRequestPermissionsResult(requestCode, permissions, grantResults); 7085 } 7086 7087 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 7088 Fragment fragment) { 7089 // If the package installer crashed we may have not data - best effort. 7090 String[] permissions = (data != null) ? data.getStringArrayExtra( 7091 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 7092 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 7093 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 7094 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 7095 } 7096 7097 class HostCallbacks extends FragmentHostCallback<Activity> { 7098 public HostCallbacks() { 7099 super(Activity.this /*activity*/); 7100 } 7101 7102 @Override 7103 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 7104 Activity.this.dump(prefix, fd, writer, args); 7105 } 7106 7107 @Override 7108 public boolean onShouldSaveFragmentState(Fragment fragment) { 7109 return !isFinishing(); 7110 } 7111 7112 @Override 7113 public LayoutInflater onGetLayoutInflater() { 7114 final LayoutInflater result = Activity.this.getLayoutInflater(); 7115 if (onUseFragmentManagerInflaterFactory()) { 7116 return result.cloneInContext(Activity.this); 7117 } 7118 return result; 7119 } 7120 7121 @Override 7122 public boolean onUseFragmentManagerInflaterFactory() { 7123 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 7124 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 7125 } 7126 7127 @Override 7128 public Activity onGetHost() { 7129 return Activity.this; 7130 } 7131 7132 @Override 7133 public void onInvalidateOptionsMenu() { 7134 Activity.this.invalidateOptionsMenu(); 7135 } 7136 7137 @Override 7138 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 7139 Bundle options) { 7140 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 7141 } 7142 7143 @Override 7144 public void onStartIntentSenderFromFragment(Fragment fragment, IntentSender intent, 7145 int requestCode, @Nullable Intent fillInIntent, int flagsMask, int flagsValues, 7146 int extraFlags, Bundle options) throws IntentSender.SendIntentException { 7147 if (mParent == null) { 7148 startIntentSenderForResultInner(intent, fragment.mWho, requestCode, fillInIntent, 7149 flagsMask, flagsValues, options); 7150 } else if (options != null) { 7151 mParent.startIntentSenderFromChildFragment(fragment, intent, requestCode, 7152 fillInIntent, flagsMask, flagsValues, extraFlags, options); 7153 } 7154 } 7155 7156 @Override 7157 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 7158 int requestCode) { 7159 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 7160 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 7161 startActivityForResult(who, intent, requestCode, null); 7162 } 7163 7164 @Override 7165 public boolean onHasWindowAnimations() { 7166 return getWindow() != null; 7167 } 7168 7169 @Override 7170 public int onGetWindowAnimations() { 7171 final Window w = getWindow(); 7172 return (w == null) ? 0 : w.getAttributes().windowAnimations; 7173 } 7174 7175 @Override 7176 public void onAttachFragment(Fragment fragment) { 7177 Activity.this.onAttachFragment(fragment); 7178 } 7179 7180 @Nullable 7181 @Override 7182 public View onFindViewById(int id) { 7183 return Activity.this.findViewById(id); 7184 } 7185 7186 @Override 7187 public boolean onHasView() { 7188 final Window w = getWindow(); 7189 return (w != null && w.peekDecorView() != null); 7190 } 7191 } 7192} 7193