Activity.java revision eb3c2d3e630825974e7275607558978252882204
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.admin.DevicePolicyManager; 33import android.app.assist.AssistContent; 34import android.content.ComponentCallbacks2; 35import android.content.ComponentName; 36import android.content.ContentResolver; 37import android.content.Context; 38import android.content.CursorLoader; 39import android.content.IIntentSender; 40import android.content.Intent; 41import android.content.IntentSender; 42import android.content.SharedPreferences; 43import android.content.pm.ActivityInfo; 44import android.content.pm.ApplicationInfo; 45import android.content.pm.PackageManager; 46import android.content.pm.PackageManager.NameNotFoundException; 47import android.content.res.Configuration; 48import android.content.res.Resources; 49import android.content.res.TypedArray; 50import android.database.Cursor; 51import android.graphics.Bitmap; 52import android.graphics.Canvas; 53import android.graphics.Color; 54import android.graphics.drawable.Drawable; 55import android.hardware.input.InputManager; 56import android.media.AudioManager; 57import android.media.session.MediaController; 58import android.net.Uri; 59import android.os.Build; 60import android.os.Bundle; 61import android.os.Handler; 62import android.os.IBinder; 63import android.os.Looper; 64import android.os.Parcelable; 65import android.os.PersistableBundle; 66import android.os.RemoteException; 67import android.os.StrictMode; 68import android.os.SystemProperties; 69import android.os.UserHandle; 70import android.text.Selection; 71import android.text.SpannableStringBuilder; 72import android.text.TextUtils; 73import android.text.method.TextKeyListener; 74import android.transition.Scene; 75import android.transition.TransitionManager; 76import android.util.ArrayMap; 77import android.util.AttributeSet; 78import android.util.EventLog; 79import android.util.Log; 80import android.util.PrintWriterPrinter; 81import android.util.Slog; 82import android.util.SparseArray; 83import android.util.SuperNotCalledException; 84import android.view.ActionMode; 85import android.view.ContextMenu; 86import android.view.ContextMenu.ContextMenuInfo; 87import android.view.ContextThemeWrapper; 88import android.view.DragEvent; 89import android.view.DropPermissions; 90import android.view.InputDevice; 91import android.view.KeyCharacterMap; 92import android.view.KeyEvent; 93import android.view.KeyboardShortcutGroup; 94import android.view.KeyboardShortcutInfo; 95import android.view.LayoutInflater; 96import android.view.Menu; 97import android.view.MenuInflater; 98import android.view.MenuItem; 99import android.view.MotionEvent; 100import android.view.SearchEvent; 101import android.view.View; 102import android.view.View.OnCreateContextMenuListener; 103import android.view.ViewGroup; 104import android.view.ViewGroup.LayoutParams; 105import android.view.ViewManager; 106import android.view.ViewRootImpl; 107import android.view.Window; 108import android.view.Window.WindowControllerCallback; 109import android.view.WindowManager; 110import android.view.WindowManagerGlobal; 111import android.view.accessibility.AccessibilityEvent; 112import android.widget.AdapterView; 113import android.widget.Toast; 114import android.widget.Toolbar; 115 116import com.android.internal.app.IVoiceInteractor; 117import com.android.internal.app.ToolbarActionBar; 118import com.android.internal.app.WindowDecorActionBar; 119import com.android.internal.policy.PhoneWindow; 120 121import java.io.FileDescriptor; 122import java.io.PrintWriter; 123import java.lang.annotation.Retention; 124import java.lang.annotation.RetentionPolicy; 125import java.util.ArrayList; 126import java.util.HashMap; 127import java.util.List; 128 129/** 130 * An activity is a single, focused thing that the user can do. Almost all 131 * activities interact with the user, so the Activity class takes care of 132 * creating a window for you in which you can place your UI with 133 * {@link #setContentView}. While activities are often presented to the user 134 * as full-screen windows, they can also be used in other ways: as floating 135 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 136 * or embedded inside of another activity (using {@link ActivityGroup}). 137 * 138 * There are two methods almost all subclasses of Activity will implement: 139 * 140 * <ul> 141 * <li> {@link #onCreate} is where you initialize your activity. Most 142 * importantly, here you will usually call {@link #setContentView(int)} 143 * with a layout resource defining your UI, and using {@link #findViewById} 144 * to retrieve the widgets in that UI that you need to interact with 145 * programmatically. 146 * 147 * <li> {@link #onPause} is where you deal with the user leaving your 148 * activity. Most importantly, any changes made by the user should at this 149 * point be committed (usually to the 150 * {@link android.content.ContentProvider} holding the data). 151 * </ul> 152 * 153 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 154 * activity classes must have a corresponding 155 * {@link android.R.styleable#AndroidManifestActivity <activity>} 156 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 157 * 158 * <p>Topics covered here: 159 * <ol> 160 * <li><a href="#Fragments">Fragments</a> 161 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 162 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 163 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 164 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 165 * <li><a href="#Permissions">Permissions</a> 166 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 167 * </ol> 168 * 169 * <div class="special reference"> 170 * <h3>Developer Guides</h3> 171 * <p>The Activity class is an important part of an application's overall lifecycle, 172 * and the way activities are launched and put together is a fundamental 173 * part of the platform's application model. For a detailed perspective on the structure of an 174 * Android application and how activities behave, please read the 175 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 176 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 177 * developer guides.</p> 178 * 179 * <p>You can also find a detailed discussion about how to create activities in the 180 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 181 * developer guide.</p> 182 * </div> 183 * 184 * <a name="Fragments"></a> 185 * <h3>Fragments</h3> 186 * 187 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 188 * implementations can make use of the {@link Fragment} class to better 189 * modularize their code, build more sophisticated user interfaces for larger 190 * screens, and help scale their application between small and large screens. 191 * 192 * <a name="ActivityLifecycle"></a> 193 * <h3>Activity Lifecycle</h3> 194 * 195 * <p>Activities in the system are managed as an <em>activity stack</em>. 196 * When a new activity is started, it is placed on the top of the stack 197 * and becomes the running activity -- the previous activity always remains 198 * below it in the stack, and will not come to the foreground again until 199 * the new activity exits.</p> 200 * 201 * <p>An activity has essentially four states:</p> 202 * <ul> 203 * <li> If an activity in the foreground of the screen (at the top of 204 * the stack), 205 * it is <em>active</em> or <em>running</em>. </li> 206 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 207 * or transparent activity has focus on top of your activity), it 208 * is <em>paused</em>. A paused activity is completely alive (it 209 * maintains all state and member information and remains attached to 210 * the window manager), but can be killed by the system in extreme 211 * low memory situations. 212 * <li>If an activity is completely obscured by another activity, 213 * it is <em>stopped</em>. It still retains all state and member information, 214 * however, it is no longer visible to the user so its window is hidden 215 * and it will often be killed by the system when memory is needed 216 * elsewhere.</li> 217 * <li>If an activity is paused or stopped, the system can drop the activity 218 * from memory by either asking it to finish, or simply killing its 219 * process. When it is displayed again to the user, it must be 220 * completely restarted and restored to its previous state.</li> 221 * </ul> 222 * 223 * <p>The following diagram shows the important state paths of an Activity. 224 * The square rectangles represent callback methods you can implement to 225 * perform operations when the Activity moves between states. The colored 226 * ovals are major states the Activity can be in.</p> 227 * 228 * <p><img src="../../../images/activity_lifecycle.png" 229 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 230 * 231 * <p>There are three key loops you may be interested in monitoring within your 232 * activity: 233 * 234 * <ul> 235 * <li>The <b>entire lifetime</b> of an activity happens between the first call 236 * to {@link android.app.Activity#onCreate} through to a single final call 237 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 238 * of "global" state in onCreate(), and release all remaining resources in 239 * onDestroy(). For example, if it has a thread running in the background 240 * to download data from the network, it may create that thread in onCreate() 241 * and then stop the thread in onDestroy(). 242 * 243 * <li>The <b>visible lifetime</b> of an activity happens between a call to 244 * {@link android.app.Activity#onStart} until a corresponding call to 245 * {@link android.app.Activity#onStop}. During this time the user can see the 246 * activity on-screen, though it may not be in the foreground and interacting 247 * with the user. Between these two methods you can maintain resources that 248 * are needed to show the activity to the user. For example, you can register 249 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 250 * that impact your UI, and unregister it in onStop() when the user no 251 * longer sees what you are displaying. The onStart() and onStop() methods 252 * can be called multiple times, as the activity becomes visible and hidden 253 * to the user. 254 * 255 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 256 * {@link android.app.Activity#onResume} until a corresponding call to 257 * {@link android.app.Activity#onPause}. During this time the activity is 258 * in front of all other activities and interacting with the user. An activity 259 * can frequently go between the resumed and paused states -- for example when 260 * the device goes to sleep, when an activity result is delivered, when a new 261 * intent is delivered -- so the code in these methods should be fairly 262 * lightweight. 263 * </ul> 264 * 265 * <p>The entire lifecycle of an activity is defined by the following 266 * Activity methods. All of these are hooks that you can override 267 * to do appropriate work when the activity changes state. All 268 * activities will implement {@link android.app.Activity#onCreate} 269 * to do their initial setup; many will also implement 270 * {@link android.app.Activity#onPause} to commit changes to data and 271 * otherwise prepare to stop interacting with the user. You should always 272 * call up to your superclass when implementing these methods.</p> 273 * 274 * </p> 275 * <pre class="prettyprint"> 276 * public class Activity extends ApplicationContext { 277 * protected void onCreate(Bundle savedInstanceState); 278 * 279 * protected void onStart(); 280 * 281 * protected void onRestart(); 282 * 283 * protected void onResume(); 284 * 285 * protected void onPause(); 286 * 287 * protected void onStop(); 288 * 289 * protected void onDestroy(); 290 * } 291 * </pre> 292 * 293 * <p>In general the movement through an activity's lifecycle looks like 294 * this:</p> 295 * 296 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 297 * <colgroup align="left" span="3" /> 298 * <colgroup align="left" /> 299 * <colgroup align="center" /> 300 * <colgroup align="center" /> 301 * 302 * <thead> 303 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 304 * </thead> 305 * 306 * <tbody> 307 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 308 * <td>Called when the activity is first created. 309 * This is where you should do all of your normal static set up: 310 * create views, bind data to lists, etc. This method also 311 * provides you with a Bundle containing the activity's previously 312 * frozen state, if there was one. 313 * <p>Always followed by <code>onStart()</code>.</td> 314 * <td align="center">No</td> 315 * <td align="center"><code>onStart()</code></td> 316 * </tr> 317 * 318 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 319 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 320 * <td>Called after your activity has been stopped, prior to it being 321 * started again. 322 * <p>Always followed by <code>onStart()</code></td> 323 * <td align="center">No</td> 324 * <td align="center"><code>onStart()</code></td> 325 * </tr> 326 * 327 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 328 * <td>Called when the activity is becoming visible to the user. 329 * <p>Followed by <code>onResume()</code> if the activity comes 330 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 331 * <td align="center">No</td> 332 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 333 * </tr> 334 * 335 * <tr><td rowspan="2" style="border-left: none;"> </td> 336 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 337 * <td>Called when the activity will start 338 * interacting with the user. At this point your activity is at 339 * the top of the activity stack, with user input going to it. 340 * <p>Always followed by <code>onPause()</code>.</td> 341 * <td align="center">No</td> 342 * <td align="center"><code>onPause()</code></td> 343 * </tr> 344 * 345 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 346 * <td>Called when the system is about to start resuming a previous 347 * activity. This is typically used to commit unsaved changes to 348 * persistent data, stop animations and other things that may be consuming 349 * CPU, etc. Implementations of this method must be very quick because 350 * the next activity will not be resumed until this method returns. 351 * <p>Followed by either <code>onResume()</code> if the activity 352 * returns back to the front, or <code>onStop()</code> if it becomes 353 * invisible to the user.</td> 354 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 355 * <td align="center"><code>onResume()</code> or<br> 356 * <code>onStop()</code></td> 357 * </tr> 358 * 359 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 360 * <td>Called when the activity is no longer visible to the user, because 361 * another activity has been resumed and is covering this one. This 362 * may happen either because a new activity is being started, an existing 363 * one is being brought in front of this one, or this one is being 364 * destroyed. 365 * <p>Followed by either <code>onRestart()</code> if 366 * this activity is coming back to interact with the user, or 367 * <code>onDestroy()</code> if this activity is going away.</td> 368 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 369 * <td align="center"><code>onRestart()</code> or<br> 370 * <code>onDestroy()</code></td> 371 * </tr> 372 * 373 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 374 * <td>The final call you receive before your 375 * activity is destroyed. This can happen either because the 376 * activity is finishing (someone called {@link Activity#finish} on 377 * it, or because the system is temporarily destroying this 378 * instance of the activity to save space. You can distinguish 379 * between these two scenarios with the {@link 380 * Activity#isFinishing} method.</td> 381 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 382 * <td align="center"><em>nothing</em></td> 383 * </tr> 384 * </tbody> 385 * </table> 386 * 387 * <p>Note the "Killable" column in the above table -- for those methods that 388 * are marked as being killable, after that method returns the process hosting the 389 * activity may be killed by the system <em>at any time</em> without another line 390 * of its code being executed. Because of this, you should use the 391 * {@link #onPause} method to write any persistent data (such as user edits) 392 * to storage. In addition, the method 393 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 394 * in such a background state, allowing you to save away any dynamic instance 395 * state in your activity into the given Bundle, to be later received in 396 * {@link #onCreate} if the activity needs to be re-created. 397 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 398 * section for more information on how the lifecycle of a process is tied 399 * to the activities it is hosting. Note that it is important to save 400 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 401 * because the latter is not part of the lifecycle callbacks, so will not 402 * be called in every situation as described in its documentation.</p> 403 * 404 * <p class="note">Be aware that these semantics will change slightly between 405 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 406 * vs. those targeting prior platforms. Starting with Honeycomb, an application 407 * is not in the killable state until its {@link #onStop} has returned. This 408 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 409 * safely called after {@link #onPause()} and allows and application to safely 410 * wait until {@link #onStop()} to save persistent state.</p> 411 * 412 * <p>For those methods that are not marked as being killable, the activity's 413 * process will not be killed by the system starting from the time the method 414 * is called and continuing after it returns. Thus an activity is in the killable 415 * state, for example, between after <code>onPause()</code> to the start of 416 * <code>onResume()</code>.</p> 417 * 418 * <a name="ConfigurationChanges"></a> 419 * <h3>Configuration Changes</h3> 420 * 421 * <p>If the configuration of the device (as defined by the 422 * {@link Configuration Resources.Configuration} class) changes, 423 * then anything displaying a user interface will need to update to match that 424 * configuration. Because Activity is the primary mechanism for interacting 425 * with the user, it includes special support for handling configuration 426 * changes.</p> 427 * 428 * <p>Unless you specify otherwise, a configuration change (such as a change 429 * in screen orientation, language, input devices, etc) will cause your 430 * current activity to be <em>destroyed</em>, going through the normal activity 431 * lifecycle process of {@link #onPause}, 432 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 433 * had been in the foreground or visible to the user, once {@link #onDestroy} is 434 * called in that instance then a new instance of the activity will be 435 * created, with whatever savedInstanceState the previous instance had generated 436 * from {@link #onSaveInstanceState}.</p> 437 * 438 * <p>This is done because any application resource, 439 * including layout files, can change based on any configuration value. Thus 440 * the only safe way to handle a configuration change is to re-retrieve all 441 * resources, including layouts, drawables, and strings. Because activities 442 * must already know how to save their state and re-create themselves from 443 * that state, this is a convenient way to have an activity restart itself 444 * with a new configuration.</p> 445 * 446 * <p>In some special cases, you may want to bypass restarting of your 447 * activity based on one or more types of configuration changes. This is 448 * done with the {@link android.R.attr#configChanges android:configChanges} 449 * attribute in its manifest. For any types of configuration changes you say 450 * that you handle there, you will receive a call to your current activity's 451 * {@link #onConfigurationChanged} method instead of being restarted. If 452 * a configuration change involves any that you do not handle, however, the 453 * activity will still be restarted and {@link #onConfigurationChanged} 454 * will not be called.</p> 455 * 456 * <a name="StartingActivities"></a> 457 * <h3>Starting Activities and Getting Results</h3> 458 * 459 * <p>The {@link android.app.Activity#startActivity} 460 * method is used to start a 461 * new activity, which will be placed at the top of the activity stack. It 462 * takes a single argument, an {@link android.content.Intent Intent}, 463 * which describes the activity 464 * to be executed.</p> 465 * 466 * <p>Sometimes you want to get a result back from an activity when it 467 * ends. For example, you may start an activity that lets the user pick 468 * a person in a list of contacts; when it ends, it returns the person 469 * that was selected. To do this, you call the 470 * {@link android.app.Activity#startActivityForResult(Intent, int)} 471 * version with a second integer parameter identifying the call. The result 472 * will come back through your {@link android.app.Activity#onActivityResult} 473 * method.</p> 474 * 475 * <p>When an activity exits, it can call 476 * {@link android.app.Activity#setResult(int)} 477 * to return data back to its parent. It must always supply a result code, 478 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 479 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 480 * return back an Intent containing any additional data it wants. All of this 481 * information appears back on the 482 * parent's <code>Activity.onActivityResult()</code>, along with the integer 483 * identifier it originally supplied.</p> 484 * 485 * <p>If a child activity fails for any reason (such as crashing), the parent 486 * activity will receive a result with the code RESULT_CANCELED.</p> 487 * 488 * <pre class="prettyprint"> 489 * public class MyActivity extends Activity { 490 * ... 491 * 492 * static final int PICK_CONTACT_REQUEST = 0; 493 * 494 * public boolean onKeyDown(int keyCode, KeyEvent event) { 495 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 496 * // When the user center presses, let them pick a contact. 497 * startActivityForResult( 498 * new Intent(Intent.ACTION_PICK, 499 * new Uri("content://contacts")), 500 * PICK_CONTACT_REQUEST); 501 * return true; 502 * } 503 * return false; 504 * } 505 * 506 * protected void onActivityResult(int requestCode, int resultCode, 507 * Intent data) { 508 * if (requestCode == PICK_CONTACT_REQUEST) { 509 * if (resultCode == RESULT_OK) { 510 * // A contact was picked. Here we will just display it 511 * // to the user. 512 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 513 * } 514 * } 515 * } 516 * } 517 * </pre> 518 * 519 * <a name="SavingPersistentState"></a> 520 * <h3>Saving Persistent State</h3> 521 * 522 * <p>There are generally two kinds of persistent state than an activity 523 * will deal with: shared document-like data (typically stored in a SQLite 524 * database using a {@linkplain android.content.ContentProvider content provider}) 525 * and internal state such as user preferences.</p> 526 * 527 * <p>For content provider data, we suggest that activities use a 528 * "edit in place" user model. That is, any edits a user makes are effectively 529 * made immediately without requiring an additional confirmation step. 530 * Supporting this model is generally a simple matter of following two rules:</p> 531 * 532 * <ul> 533 * <li> <p>When creating a new document, the backing database entry or file for 534 * it is created immediately. For example, if the user chooses to write 535 * a new e-mail, a new entry for that e-mail is created as soon as they 536 * start entering data, so that if they go to any other activity after 537 * that point this e-mail will now appear in the list of drafts.</p> 538 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 539 * commit to the backing content provider or file any changes the user 540 * has made. This ensures that those changes will be seen by any other 541 * activity that is about to run. You will probably want to commit 542 * your data even more aggressively at key times during your 543 * activity's lifecycle: for example before starting a new 544 * activity, before finishing your own activity, when the user 545 * switches between input fields, etc.</p> 546 * </ul> 547 * 548 * <p>This model is designed to prevent data loss when a user is navigating 549 * between activities, and allows the system to safely kill an activity (because 550 * system resources are needed somewhere else) at any time after it has been 551 * paused. Note this implies 552 * that the user pressing BACK from your activity does <em>not</em> 553 * mean "cancel" -- it means to leave the activity with its current contents 554 * saved away. Canceling edits in an activity must be provided through 555 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 556 * 557 * <p>See the {@linkplain android.content.ContentProvider content package} for 558 * more information about content providers. These are a key aspect of how 559 * different activities invoke and propagate data between themselves.</p> 560 * 561 * <p>The Activity class also provides an API for managing internal persistent state 562 * associated with an activity. This can be used, for example, to remember 563 * the user's preferred initial display in a calendar (day view or week view) 564 * or the user's default home page in a web browser.</p> 565 * 566 * <p>Activity persistent state is managed 567 * with the method {@link #getPreferences}, 568 * allowing you to retrieve and 569 * modify a set of name/value pairs associated with the activity. To use 570 * preferences that are shared across multiple application components 571 * (activities, receivers, services, providers), you can use the underlying 572 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 573 * to retrieve a preferences 574 * object stored under a specific name. 575 * (Note that it is not possible to share settings data across application 576 * packages -- for that you will need a content provider.)</p> 577 * 578 * <p>Here is an excerpt from a calendar activity that stores the user's 579 * preferred view mode in its persistent settings:</p> 580 * 581 * <pre class="prettyprint"> 582 * public class CalendarActivity extends Activity { 583 * ... 584 * 585 * static final int DAY_VIEW_MODE = 0; 586 * static final int WEEK_VIEW_MODE = 1; 587 * 588 * private SharedPreferences mPrefs; 589 * private int mCurViewMode; 590 * 591 * protected void onCreate(Bundle savedInstanceState) { 592 * super.onCreate(savedInstanceState); 593 * 594 * SharedPreferences mPrefs = getSharedPreferences(); 595 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 596 * } 597 * 598 * protected void onPause() { 599 * super.onPause(); 600 * 601 * SharedPreferences.Editor ed = mPrefs.edit(); 602 * ed.putInt("view_mode", mCurViewMode); 603 * ed.commit(); 604 * } 605 * } 606 * </pre> 607 * 608 * <a name="Permissions"></a> 609 * <h3>Permissions</h3> 610 * 611 * <p>The ability to start a particular Activity can be enforced when it is 612 * declared in its 613 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 614 * tag. By doing so, other applications will need to declare a corresponding 615 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 616 * element in their own manifest to be able to start that activity. 617 * 618 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 619 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 620 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 621 * Activity access to the specific URIs in the Intent. Access will remain 622 * until the Activity has finished (it will remain across the hosting 623 * process being killed and other temporary destruction). As of 624 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 625 * was already created and a new Intent is being delivered to 626 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 627 * to the existing ones it holds. 628 * 629 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 630 * document for more information on permissions and security in general. 631 * 632 * <a name="ProcessLifecycle"></a> 633 * <h3>Process Lifecycle</h3> 634 * 635 * <p>The Android system attempts to keep application process around for as 636 * long as possible, but eventually will need to remove old processes when 637 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 638 * Lifecycle</a>, the decision about which process to remove is intimately 639 * tied to the state of the user's interaction with it. In general, there 640 * are four states a process can be in based on the activities running in it, 641 * listed here in order of importance. The system will kill less important 642 * processes (the last ones) before it resorts to killing more important 643 * processes (the first ones). 644 * 645 * <ol> 646 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 647 * that the user is currently interacting with) is considered the most important. 648 * Its process will only be killed as a last resort, if it uses more memory 649 * than is available on the device. Generally at this point the device has 650 * reached a memory paging state, so this is required in order to keep the user 651 * interface responsive. 652 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 653 * but not in the foreground, such as one sitting behind a foreground dialog) 654 * is considered extremely important and will not be killed unless that is 655 * required to keep the foreground activity running. 656 * <li> <p>A <b>background activity</b> (an activity that is not visible to 657 * the user and has been paused) is no longer critical, so the system may 658 * safely kill its process to reclaim memory for other foreground or 659 * visible processes. If its process needs to be killed, when the user navigates 660 * back to the activity (making it visible on the screen again), its 661 * {@link #onCreate} method will be called with the savedInstanceState it had previously 662 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 663 * state as the user last left it. 664 * <li> <p>An <b>empty process</b> is one hosting no activities or other 665 * application components (such as {@link Service} or 666 * {@link android.content.BroadcastReceiver} classes). These are killed very 667 * quickly by the system as memory becomes low. For this reason, any 668 * background operation you do outside of an activity must be executed in the 669 * context of an activity BroadcastReceiver or Service to ensure that the system 670 * knows it needs to keep your process around. 671 * </ol> 672 * 673 * <p>Sometimes an Activity may need to do a long-running operation that exists 674 * independently of the activity lifecycle itself. An example may be a camera 675 * application that allows you to upload a picture to a web site. The upload 676 * may take a long time, and the application should allow the user to leave 677 * the application will it is executing. To accomplish this, your Activity 678 * should start a {@link Service} in which the upload takes place. This allows 679 * the system to properly prioritize your process (considering it to be more 680 * important than other non-visible applications) for the duration of the 681 * upload, independent of whether the original activity is paused, stopped, 682 * or finished. 683 */ 684public class Activity extends ContextThemeWrapper 685 implements LayoutInflater.Factory2, 686 Window.Callback, KeyEvent.Callback, 687 OnCreateContextMenuListener, ComponentCallbacks2, 688 Window.OnWindowDismissedCallback, WindowControllerCallback { 689 private static final String TAG = "Activity"; 690 private static final boolean DEBUG_LIFECYCLE = false; 691 692 /** Standard activity result: operation canceled. */ 693 public static final int RESULT_CANCELED = 0; 694 /** Standard activity result: operation succeeded. */ 695 public static final int RESULT_OK = -1; 696 /** Start of user-defined activity results. */ 697 public static final int RESULT_FIRST_USER = 1; 698 699 /** @hide Task isn't finished when activity is finished */ 700 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 701 /** 702 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 703 * past behavior the task is also removed from recents. 704 */ 705 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 706 /** 707 * @hide Task is finished along with the finishing activity, but it is not removed from 708 * recents. 709 */ 710 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 711 712 static final String FRAGMENTS_TAG = "android:fragments"; 713 714 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 715 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 716 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 717 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 718 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 719 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 720 "android:hasCurrentPermissionsRequest"; 721 722 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 723 724 private static class ManagedDialog { 725 Dialog mDialog; 726 Bundle mArgs; 727 } 728 private SparseArray<ManagedDialog> mManagedDialogs; 729 730 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 731 private Instrumentation mInstrumentation; 732 private IBinder mToken; 733 private int mIdent; 734 /*package*/ String mEmbeddedID; 735 private Application mApplication; 736 /*package*/ Intent mIntent; 737 /*package*/ String mReferrer; 738 private ComponentName mComponent; 739 /*package*/ ActivityInfo mActivityInfo; 740 /*package*/ ActivityThread mMainThread; 741 Activity mParent; 742 boolean mCalled; 743 /*package*/ boolean mResumed; 744 /*package*/ boolean mStopped; 745 boolean mFinished; 746 boolean mStartedActivity; 747 private boolean mDestroyed; 748 private boolean mDoReportFullyDrawn = true; 749 /** true if the activity is going through a transient pause */ 750 /*package*/ boolean mTemporaryPause = false; 751 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 752 /*package*/ boolean mChangingConfigurations = false; 753 /*package*/ int mConfigChangeFlags; 754 /*package*/ Configuration mCurrentConfig; 755 private SearchManager mSearchManager; 756 private MenuInflater mMenuInflater; 757 758 static final class NonConfigurationInstances { 759 Object activity; 760 HashMap<String, Object> children; 761 FragmentManagerNonConfig fragments; 762 ArrayMap<String, LoaderManager> loaders; 763 VoiceInteractor voiceInteractor; 764 } 765 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 766 767 private Window mWindow; 768 769 private WindowManager mWindowManager; 770 /*package*/ View mDecor = null; 771 /*package*/ boolean mWindowAdded = false; 772 /*package*/ boolean mVisibleFromServer = false; 773 /*package*/ boolean mVisibleFromClient = true; 774 /*package*/ ActionBar mActionBar = null; 775 private boolean mEnableDefaultActionBarUp; 776 777 private VoiceInteractor mVoiceInteractor; 778 779 private CharSequence mTitle; 780 private int mTitleColor = 0; 781 782 // we must have a handler before the FragmentController is constructed 783 final Handler mHandler = new Handler(); 784 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 785 786 // Most recent call to requestVisibleBehind(). 787 boolean mVisibleBehind; 788 789 private static final class ManagedCursor { 790 ManagedCursor(Cursor cursor) { 791 mCursor = cursor; 792 mReleased = false; 793 mUpdated = false; 794 } 795 796 private final Cursor mCursor; 797 private boolean mReleased; 798 private boolean mUpdated; 799 } 800 private final ArrayList<ManagedCursor> mManagedCursors = 801 new ArrayList<ManagedCursor>(); 802 803 // protected by synchronized (this) 804 int mResultCode = RESULT_CANCELED; 805 Intent mResultData = null; 806 807 private TranslucentConversionListener mTranslucentCallback; 808 private boolean mChangeCanvasToTranslucent; 809 810 private SearchEvent mSearchEvent; 811 812 private boolean mTitleReady = false; 813 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 814 815 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 816 private SpannableStringBuilder mDefaultKeySsb = null; 817 818 private ActivityManager.TaskDescription mTaskDescription = 819 new ActivityManager.TaskDescription(); 820 821 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 822 823 @SuppressWarnings("unused") 824 private final Object mInstanceTracker = StrictMode.trackActivity(this); 825 826 private Thread mUiThread; 827 828 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 829 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 830 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 831 832 private boolean mHasCurrentPermissionsRequest; 833 private boolean mEatKeyUpEvent; 834 835 private static native String getDlWarning(); 836 837 /** Return the intent that started this activity. */ 838 public Intent getIntent() { 839 return mIntent; 840 } 841 842 /** 843 * Change the intent returned by {@link #getIntent}. This holds a 844 * reference to the given intent; it does not copy it. Often used in 845 * conjunction with {@link #onNewIntent}. 846 * 847 * @param newIntent The new Intent object to return from getIntent 848 * 849 * @see #getIntent 850 * @see #onNewIntent 851 */ 852 public void setIntent(Intent newIntent) { 853 mIntent = newIntent; 854 } 855 856 /** Return the application that owns this activity. */ 857 public final Application getApplication() { 858 return mApplication; 859 } 860 861 /** Is this activity embedded inside of another activity? */ 862 public final boolean isChild() { 863 return mParent != null; 864 } 865 866 /** Return the parent activity if this view is an embedded child. */ 867 public final Activity getParent() { 868 return mParent; 869 } 870 871 /** Retrieve the window manager for showing custom windows. */ 872 public WindowManager getWindowManager() { 873 return mWindowManager; 874 } 875 876 /** 877 * Retrieve the current {@link android.view.Window} for the activity. 878 * This can be used to directly access parts of the Window API that 879 * are not available through Activity/Screen. 880 * 881 * @return Window The current window, or null if the activity is not 882 * visual. 883 */ 884 public Window getWindow() { 885 return mWindow; 886 } 887 888 /** 889 * Return the LoaderManager for this activity, creating it if needed. 890 */ 891 public LoaderManager getLoaderManager() { 892 return mFragments.getLoaderManager(); 893 } 894 895 /** 896 * Calls {@link android.view.Window#getCurrentFocus} on the 897 * Window of this Activity to return the currently focused view. 898 * 899 * @return View The current View with focus or null. 900 * 901 * @see #getWindow 902 * @see android.view.Window#getCurrentFocus 903 */ 904 @Nullable 905 public View getCurrentFocus() { 906 return mWindow != null ? mWindow.getCurrentFocus() : null; 907 } 908 909 /** 910 * Called when the activity is starting. This is where most initialization 911 * should go: calling {@link #setContentView(int)} to inflate the 912 * activity's UI, using {@link #findViewById} to programmatically interact 913 * with widgets in the UI, calling 914 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 915 * cursors for data being displayed, etc. 916 * 917 * <p>You can call {@link #finish} from within this function, in 918 * which case onDestroy() will be immediately called without any of the rest 919 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 920 * {@link #onPause}, etc) executing. 921 * 922 * <p><em>Derived classes must call through to the super class's 923 * implementation of this method. If they do not, an exception will be 924 * thrown.</em></p> 925 * 926 * @param savedInstanceState If the activity is being re-initialized after 927 * previously being shut down then this Bundle contains the data it most 928 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 929 * 930 * @see #onStart 931 * @see #onSaveInstanceState 932 * @see #onRestoreInstanceState 933 * @see #onPostCreate 934 */ 935 @MainThread 936 @CallSuper 937 protected void onCreate(@Nullable Bundle savedInstanceState) { 938 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 939 if (mLastNonConfigurationInstances != null) { 940 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 941 } 942 if (mActivityInfo.parentActivityName != null) { 943 if (mActionBar == null) { 944 mEnableDefaultActionBarUp = true; 945 } else { 946 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 947 } 948 } 949 if (savedInstanceState != null) { 950 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 951 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 952 ? mLastNonConfigurationInstances.fragments : null); 953 } 954 mFragments.dispatchCreate(); 955 getApplication().dispatchActivityCreated(this, savedInstanceState); 956 if (mVoiceInteractor != null) { 957 mVoiceInteractor.attachActivity(this); 958 } 959 mCalled = true; 960 } 961 962 /** 963 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 964 * the attribute {@link android.R.attr#persistableMode} set to 965 * <code>persistAcrossReboots</code>. 966 * 967 * @param savedInstanceState if the activity is being re-initialized after 968 * previously being shut down then this Bundle contains the data it most 969 * recently supplied in {@link #onSaveInstanceState}. 970 * <b><i>Note: Otherwise it is null.</i></b> 971 * @param persistentState if the activity is being re-initialized after 972 * previously being shut down or powered off then this Bundle contains the data it most 973 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 974 * <b><i>Note: Otherwise it is null.</i></b> 975 * 976 * @see #onCreate(android.os.Bundle) 977 * @see #onStart 978 * @see #onSaveInstanceState 979 * @see #onRestoreInstanceState 980 * @see #onPostCreate 981 */ 982 public void onCreate(@Nullable Bundle savedInstanceState, 983 @Nullable PersistableBundle persistentState) { 984 onCreate(savedInstanceState); 985 } 986 987 /** 988 * The hook for {@link ActivityThread} to restore the state of this activity. 989 * 990 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 991 * {@link #restoreManagedDialogs(android.os.Bundle)}. 992 * 993 * @param savedInstanceState contains the saved state 994 */ 995 final void performRestoreInstanceState(Bundle savedInstanceState) { 996 onRestoreInstanceState(savedInstanceState); 997 restoreManagedDialogs(savedInstanceState); 998 } 999 1000 /** 1001 * The hook for {@link ActivityThread} to restore the state of this activity. 1002 * 1003 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1004 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1005 * 1006 * @param savedInstanceState contains the saved state 1007 * @param persistentState contains the persistable saved state 1008 */ 1009 final void performRestoreInstanceState(Bundle savedInstanceState, 1010 PersistableBundle persistentState) { 1011 onRestoreInstanceState(savedInstanceState, persistentState); 1012 if (savedInstanceState != null) { 1013 restoreManagedDialogs(savedInstanceState); 1014 } 1015 } 1016 1017 /** 1018 * This method is called after {@link #onStart} when the activity is 1019 * being re-initialized from a previously saved state, given here in 1020 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1021 * to restore their state, but it is sometimes convenient to do it here 1022 * after all of the initialization has been done or to allow subclasses to 1023 * decide whether to use your default implementation. The default 1024 * implementation of this method performs a restore of any view state that 1025 * had previously been frozen by {@link #onSaveInstanceState}. 1026 * 1027 * <p>This method is called between {@link #onStart} and 1028 * {@link #onPostCreate}. 1029 * 1030 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1031 * 1032 * @see #onCreate 1033 * @see #onPostCreate 1034 * @see #onResume 1035 * @see #onSaveInstanceState 1036 */ 1037 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1038 if (mWindow != null) { 1039 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1040 if (windowState != null) { 1041 mWindow.restoreHierarchyState(windowState); 1042 } 1043 } 1044 } 1045 1046 /** 1047 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1048 * created with the attribute {@link android.R.attr#persistableMode} set to 1049 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1050 * came from the restored PersistableBundle first 1051 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1052 * 1053 * <p>This method is called between {@link #onStart} and 1054 * {@link #onPostCreate}. 1055 * 1056 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1057 * 1058 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1059 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1060 * 1061 * @see #onRestoreInstanceState(Bundle) 1062 * @see #onCreate 1063 * @see #onPostCreate 1064 * @see #onResume 1065 * @see #onSaveInstanceState 1066 */ 1067 public void onRestoreInstanceState(Bundle savedInstanceState, 1068 PersistableBundle persistentState) { 1069 if (savedInstanceState != null) { 1070 onRestoreInstanceState(savedInstanceState); 1071 } 1072 } 1073 1074 /** 1075 * Restore the state of any saved managed dialogs. 1076 * 1077 * @param savedInstanceState The bundle to restore from. 1078 */ 1079 private void restoreManagedDialogs(Bundle savedInstanceState) { 1080 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1081 if (b == null) { 1082 return; 1083 } 1084 1085 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1086 final int numDialogs = ids.length; 1087 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1088 for (int i = 0; i < numDialogs; i++) { 1089 final Integer dialogId = ids[i]; 1090 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1091 if (dialogState != null) { 1092 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1093 // so tell createDialog() not to do it, otherwise we get an exception 1094 final ManagedDialog md = new ManagedDialog(); 1095 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1096 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1097 if (md.mDialog != null) { 1098 mManagedDialogs.put(dialogId, md); 1099 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1100 md.mDialog.onRestoreInstanceState(dialogState); 1101 } 1102 } 1103 } 1104 } 1105 1106 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1107 final Dialog dialog = onCreateDialog(dialogId, args); 1108 if (dialog == null) { 1109 return null; 1110 } 1111 dialog.dispatchOnCreate(state); 1112 return dialog; 1113 } 1114 1115 private static String savedDialogKeyFor(int key) { 1116 return SAVED_DIALOG_KEY_PREFIX + key; 1117 } 1118 1119 private static String savedDialogArgsKeyFor(int key) { 1120 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1121 } 1122 1123 /** 1124 * Called when activity start-up is complete (after {@link #onStart} 1125 * and {@link #onRestoreInstanceState} have been called). Applications will 1126 * generally not implement this method; it is intended for system 1127 * classes to do final initialization after application code has run. 1128 * 1129 * <p><em>Derived classes must call through to the super class's 1130 * implementation of this method. If they do not, an exception will be 1131 * thrown.</em></p> 1132 * 1133 * @param savedInstanceState If the activity is being re-initialized after 1134 * previously being shut down then this Bundle contains the data it most 1135 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1136 * @see #onCreate 1137 */ 1138 @CallSuper 1139 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1140 if (!isChild()) { 1141 mTitleReady = true; 1142 onTitleChanged(getTitle(), getTitleColor()); 1143 } 1144 1145 mCalled = true; 1146 } 1147 1148 /** 1149 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1150 * created with the attribute {@link android.R.attr#persistableMode} set to 1151 * <code>persistAcrossReboots</code>. 1152 * 1153 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1154 * @param persistentState The data caming from the PersistableBundle first 1155 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1156 * 1157 * @see #onCreate 1158 */ 1159 public void onPostCreate(@Nullable Bundle savedInstanceState, 1160 @Nullable PersistableBundle persistentState) { 1161 onPostCreate(savedInstanceState); 1162 } 1163 1164 /** 1165 * Called after {@link #onCreate} — or after {@link #onRestart} when 1166 * the activity had been stopped, but is now again being displayed to the 1167 * user. It will be followed by {@link #onResume}. 1168 * 1169 * <p><em>Derived classes must call through to the super class's 1170 * implementation of this method. If they do not, an exception will be 1171 * thrown.</em></p> 1172 * 1173 * @see #onCreate 1174 * @see #onStop 1175 * @see #onResume 1176 */ 1177 @CallSuper 1178 protected void onStart() { 1179 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1180 mCalled = true; 1181 1182 mFragments.doLoaderStart(); 1183 1184 getApplication().dispatchActivityStarted(this); 1185 } 1186 1187 /** 1188 * Called after {@link #onStop} when the current activity is being 1189 * re-displayed to the user (the user has navigated back to it). It will 1190 * be followed by {@link #onStart} and then {@link #onResume}. 1191 * 1192 * <p>For activities that are using raw {@link Cursor} objects (instead of 1193 * creating them through 1194 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1195 * this is usually the place 1196 * where the cursor should be requeried (because you had deactivated it in 1197 * {@link #onStop}. 1198 * 1199 * <p><em>Derived classes must call through to the super class's 1200 * implementation of this method. If they do not, an exception will be 1201 * thrown.</em></p> 1202 * 1203 * @see #onStop 1204 * @see #onStart 1205 * @see #onResume 1206 */ 1207 @CallSuper 1208 protected void onRestart() { 1209 mCalled = true; 1210 } 1211 1212 /** 1213 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1214 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1215 * to give the activity a hint that its state is no longer saved -- it will generally 1216 * be called after {@link #onSaveInstanceState} and prior to the activity being 1217 * resumed/started again. 1218 */ 1219 public void onStateNotSaved() { 1220 } 1221 1222 /** 1223 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1224 * {@link #onPause}, for your activity to start interacting with the user. 1225 * This is a good place to begin animations, open exclusive-access devices 1226 * (such as the camera), etc. 1227 * 1228 * <p>Keep in mind that onResume is not the best indicator that your activity 1229 * is visible to the user; a system window such as the keyguard may be in 1230 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1231 * activity is visible to the user (for example, to resume a game). 1232 * 1233 * <p><em>Derived classes must call through to the super class's 1234 * implementation of this method. If they do not, an exception will be 1235 * thrown.</em></p> 1236 * 1237 * @see #onRestoreInstanceState 1238 * @see #onRestart 1239 * @see #onPostResume 1240 * @see #onPause 1241 */ 1242 @CallSuper 1243 protected void onResume() { 1244 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1245 getApplication().dispatchActivityResumed(this); 1246 mActivityTransitionState.onResume(this, isTopOfTask()); 1247 mCalled = true; 1248 } 1249 1250 /** 1251 * Called when activity resume is complete (after {@link #onResume} has 1252 * been called). Applications will generally not implement this method; 1253 * it is intended for system classes to do final setup after application 1254 * resume code has run. 1255 * 1256 * <p><em>Derived classes must call through to the super class's 1257 * implementation of this method. If they do not, an exception will be 1258 * thrown.</em></p> 1259 * 1260 * @see #onResume 1261 */ 1262 @CallSuper 1263 protected void onPostResume() { 1264 final Window win = getWindow(); 1265 if (win != null) win.makeActive(); 1266 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1267 mCalled = true; 1268 } 1269 1270 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1271 if (voiceInteractor == null) { 1272 mVoiceInteractor = null; 1273 } else { 1274 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1275 Looper.myLooper()); 1276 } 1277 } 1278 1279 /** 1280 * Check whether this activity is running as part of a voice interaction with the user. 1281 * If true, it should perform its interaction with the user through the 1282 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1283 */ 1284 public boolean isVoiceInteraction() { 1285 return mVoiceInteractor != null; 1286 } 1287 1288 /** 1289 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1290 * of a voice interaction. That is, returns true if this activity was directly 1291 * started by the voice interaction service as the initiation of a voice interaction. 1292 * Otherwise, for example if it was started by another activity while under voice 1293 * interaction, returns false. 1294 */ 1295 public boolean isVoiceInteractionRoot() { 1296 try { 1297 return mVoiceInteractor != null 1298 && ActivityManagerNative.getDefault().isRootVoiceInteraction(mToken); 1299 } catch (RemoteException e) { 1300 } 1301 return false; 1302 } 1303 1304 /** 1305 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1306 * interact with this activity. 1307 */ 1308 public VoiceInteractor getVoiceInteractor() { 1309 return mVoiceInteractor; 1310 } 1311 1312 /** 1313 * Queries whether the currently enabled voice interaction service supports returning 1314 * a voice interactor for use by the activity. This is valid only for the duration of the 1315 * activity. 1316 * 1317 * @return whether the current voice interaction service supports local voice interaction 1318 */ 1319 public boolean isLocalVoiceInteractionSupported() { 1320 try { 1321 return ActivityManagerNative.getDefault().supportsLocalVoiceInteraction(); 1322 } catch (RemoteException re) { 1323 } 1324 return false; 1325 } 1326 1327 /** 1328 * Starts a local voice interaction session. When ready, 1329 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1330 * to the registered voice interaction service. 1331 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1332 */ 1333 public void startLocalVoiceInteraction(Bundle privateOptions) { 1334 try { 1335 ActivityManagerNative.getDefault().startLocalVoiceInteraction(mToken, privateOptions); 1336 } catch (RemoteException re) { 1337 } 1338 } 1339 1340 /** 1341 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1342 * voice interaction session being started. You can now retrieve a voice interactor using 1343 * {@link #getVoiceInteractor()}. 1344 */ 1345 public void onLocalVoiceInteractionStarted() { 1346 Log.i(TAG, "onLocalVoiceInteractionStarted! " + getVoiceInteractor()); 1347 } 1348 1349 /** 1350 * Callback to indicate that the local voice interaction has stopped for some 1351 * reason. 1352 */ 1353 public void onLocalVoiceInteractionStopped() { 1354 Log.i(TAG, "onLocalVoiceInteractionStopped :( " + getVoiceInteractor()); 1355 } 1356 1357 /** 1358 * Request to terminate the current voice interaction that was previously started 1359 * using {@link #startLocalVoiceInteraction(Bundle)}. 1360 */ 1361 public void stopLocalVoiceInteraction() { 1362 try { 1363 ActivityManagerNative.getDefault().stopLocalVoiceInteraction(mToken); 1364 } catch (RemoteException re) { 1365 } 1366 } 1367 1368 /** 1369 * This is called for activities that set launchMode to "singleTop" in 1370 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1371 * flag when calling {@link #startActivity}. In either case, when the 1372 * activity is re-launched while at the top of the activity stack instead 1373 * of a new instance of the activity being started, onNewIntent() will be 1374 * called on the existing instance with the Intent that was used to 1375 * re-launch it. 1376 * 1377 * <p>An activity will always be paused before receiving a new intent, so 1378 * you can count on {@link #onResume} being called after this method. 1379 * 1380 * <p>Note that {@link #getIntent} still returns the original Intent. You 1381 * can use {@link #setIntent} to update it to this new Intent. 1382 * 1383 * @param intent The new intent that was started for the activity. 1384 * 1385 * @see #getIntent 1386 * @see #setIntent 1387 * @see #onResume 1388 */ 1389 protected void onNewIntent(Intent intent) { 1390 } 1391 1392 /** 1393 * The hook for {@link ActivityThread} to save the state of this activity. 1394 * 1395 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1396 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1397 * 1398 * @param outState The bundle to save the state to. 1399 */ 1400 final void performSaveInstanceState(Bundle outState) { 1401 onSaveInstanceState(outState); 1402 saveManagedDialogs(outState); 1403 mActivityTransitionState.saveState(outState); 1404 storeHasCurrentPermissionRequest(outState); 1405 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1406 } 1407 1408 /** 1409 * The hook for {@link ActivityThread} to save the state of this activity. 1410 * 1411 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1412 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1413 * 1414 * @param outState The bundle to save the state to. 1415 * @param outPersistentState The bundle to save persistent state to. 1416 */ 1417 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1418 onSaveInstanceState(outState, outPersistentState); 1419 saveManagedDialogs(outState); 1420 storeHasCurrentPermissionRequest(outState); 1421 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1422 ", " + outPersistentState); 1423 } 1424 1425 /** 1426 * Called to retrieve per-instance state from an activity before being killed 1427 * so that the state can be restored in {@link #onCreate} or 1428 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1429 * will be passed to both). 1430 * 1431 * <p>This method is called before an activity may be killed so that when it 1432 * comes back some time in the future it can restore its state. For example, 1433 * if activity B is launched in front of activity A, and at some point activity 1434 * A is killed to reclaim resources, activity A will have a chance to save the 1435 * current state of its user interface via this method so that when the user 1436 * returns to activity A, the state of the user interface can be restored 1437 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1438 * 1439 * <p>Do not confuse this method with activity lifecycle callbacks such as 1440 * {@link #onPause}, which is always called when an activity is being placed 1441 * in the background or on its way to destruction, or {@link #onStop} which 1442 * is called before destruction. One example of when {@link #onPause} and 1443 * {@link #onStop} is called and not this method is when a user navigates back 1444 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1445 * on B because that particular instance will never be restored, so the 1446 * system avoids calling it. An example when {@link #onPause} is called and 1447 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1448 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1449 * killed during the lifetime of B since the state of the user interface of 1450 * A will stay intact. 1451 * 1452 * <p>The default implementation takes care of most of the UI per-instance 1453 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1454 * view in the hierarchy that has an id, and by saving the id of the currently 1455 * focused view (all of which is restored by the default implementation of 1456 * {@link #onRestoreInstanceState}). If you override this method to save additional 1457 * information not captured by each individual view, you will likely want to 1458 * call through to the default implementation, otherwise be prepared to save 1459 * all of the state of each view yourself. 1460 * 1461 * <p>If called, this method will occur before {@link #onStop}. There are 1462 * no guarantees about whether it will occur before or after {@link #onPause}. 1463 * 1464 * @param outState Bundle in which to place your saved state. 1465 * 1466 * @see #onCreate 1467 * @see #onRestoreInstanceState 1468 * @see #onPause 1469 */ 1470 protected void onSaveInstanceState(Bundle outState) { 1471 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1472 Parcelable p = mFragments.saveAllState(); 1473 if (p != null) { 1474 outState.putParcelable(FRAGMENTS_TAG, p); 1475 } 1476 getApplication().dispatchActivitySaveInstanceState(this, outState); 1477 } 1478 1479 /** 1480 * This is the same as {@link #onSaveInstanceState} but is called for activities 1481 * created with the attribute {@link android.R.attr#persistableMode} set to 1482 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1483 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1484 * the first time that this activity is restarted following the next device reboot. 1485 * 1486 * @param outState Bundle in which to place your saved state. 1487 * @param outPersistentState State which will be saved across reboots. 1488 * 1489 * @see #onSaveInstanceState(Bundle) 1490 * @see #onCreate 1491 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1492 * @see #onPause 1493 */ 1494 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1495 onSaveInstanceState(outState); 1496 } 1497 1498 /** 1499 * Save the state of any managed dialogs. 1500 * 1501 * @param outState place to store the saved state. 1502 */ 1503 private void saveManagedDialogs(Bundle outState) { 1504 if (mManagedDialogs == null) { 1505 return; 1506 } 1507 1508 final int numDialogs = mManagedDialogs.size(); 1509 if (numDialogs == 0) { 1510 return; 1511 } 1512 1513 Bundle dialogState = new Bundle(); 1514 1515 int[] ids = new int[mManagedDialogs.size()]; 1516 1517 // save each dialog's bundle, gather the ids 1518 for (int i = 0; i < numDialogs; i++) { 1519 final int key = mManagedDialogs.keyAt(i); 1520 ids[i] = key; 1521 final ManagedDialog md = mManagedDialogs.valueAt(i); 1522 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1523 if (md.mArgs != null) { 1524 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1525 } 1526 } 1527 1528 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1529 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1530 } 1531 1532 1533 /** 1534 * Called as part of the activity lifecycle when an activity is going into 1535 * the background, but has not (yet) been killed. The counterpart to 1536 * {@link #onResume}. 1537 * 1538 * <p>When activity B is launched in front of activity A, this callback will 1539 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1540 * so be sure to not do anything lengthy here. 1541 * 1542 * <p>This callback is mostly used for saving any persistent state the 1543 * activity is editing, to present a "edit in place" model to the user and 1544 * making sure nothing is lost if there are not enough resources to start 1545 * the new activity without first killing this one. This is also a good 1546 * place to do things like stop animations and other things that consume a 1547 * noticeable amount of CPU in order to make the switch to the next activity 1548 * as fast as possible, or to close resources that are exclusive access 1549 * such as the camera. 1550 * 1551 * <p>In situations where the system needs more memory it may kill paused 1552 * processes to reclaim resources. Because of this, you should be sure 1553 * that all of your state is saved by the time you return from 1554 * this function. In general {@link #onSaveInstanceState} is used to save 1555 * per-instance state in the activity and this method is used to store 1556 * global persistent data (in content providers, files, etc.) 1557 * 1558 * <p>After receiving this call you will usually receive a following call 1559 * to {@link #onStop} (after the next activity has been resumed and 1560 * displayed), however in some cases there will be a direct call back to 1561 * {@link #onResume} without going through the stopped state. 1562 * 1563 * <p><em>Derived classes must call through to the super class's 1564 * implementation of this method. If they do not, an exception will be 1565 * thrown.</em></p> 1566 * 1567 * @see #onResume 1568 * @see #onSaveInstanceState 1569 * @see #onStop 1570 */ 1571 @CallSuper 1572 protected void onPause() { 1573 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1574 getApplication().dispatchActivityPaused(this); 1575 mCalled = true; 1576 } 1577 1578 /** 1579 * Called as part of the activity lifecycle when an activity is about to go 1580 * into the background as the result of user choice. For example, when the 1581 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1582 * when an incoming phone call causes the in-call Activity to be automatically 1583 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1584 * the activity being interrupted. In cases when it is invoked, this method 1585 * is called right before the activity's {@link #onPause} callback. 1586 * 1587 * <p>This callback and {@link #onUserInteraction} are intended to help 1588 * activities manage status bar notifications intelligently; specifically, 1589 * for helping activities determine the proper time to cancel a notfication. 1590 * 1591 * @see #onUserInteraction() 1592 */ 1593 protected void onUserLeaveHint() { 1594 } 1595 1596 /** 1597 * Generate a new thumbnail for this activity. This method is called before 1598 * pausing the activity, and should draw into <var>outBitmap</var> the 1599 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1600 * can use the given <var>canvas</var>, which is configured to draw into the 1601 * bitmap, for rendering if desired. 1602 * 1603 * <p>The default implementation returns fails and does not draw a thumbnail; 1604 * this will result in the platform creating its own thumbnail if needed. 1605 * 1606 * @param outBitmap The bitmap to contain the thumbnail. 1607 * @param canvas Can be used to render into the bitmap. 1608 * 1609 * @return Return true if you have drawn into the bitmap; otherwise after 1610 * you return it will be filled with a default thumbnail. 1611 * 1612 * @see #onCreateDescription 1613 * @see #onSaveInstanceState 1614 * @see #onPause 1615 */ 1616 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1617 return false; 1618 } 1619 1620 /** 1621 * Generate a new description for this activity. This method is called 1622 * before pausing the activity and can, if desired, return some textual 1623 * description of its current state to be displayed to the user. 1624 * 1625 * <p>The default implementation returns null, which will cause you to 1626 * inherit the description from the previous activity. If all activities 1627 * return null, generally the label of the top activity will be used as the 1628 * description. 1629 * 1630 * @return A description of what the user is doing. It should be short and 1631 * sweet (only a few words). 1632 * 1633 * @see #onCreateThumbnail 1634 * @see #onSaveInstanceState 1635 * @see #onPause 1636 */ 1637 @Nullable 1638 public CharSequence onCreateDescription() { 1639 return null; 1640 } 1641 1642 /** 1643 * This is called when the user is requesting an assist, to build a full 1644 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1645 * application. You can override this method to place into the bundle anything 1646 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1647 * of the assist Intent. 1648 * 1649 * <p>This function will be called after any global assist callbacks that had 1650 * been registered with {@link Application#registerOnProvideAssistDataListener 1651 * Application.registerOnProvideAssistDataListener}. 1652 */ 1653 public void onProvideAssistData(Bundle data) { 1654 } 1655 1656 /** 1657 * This is called when the user is requesting an assist, to provide references 1658 * to content related to the current activity. Before being called, the 1659 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1660 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1661 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1662 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1663 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1664 * 1665 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1666 * context of the activity, and fill in its ClipData with additional content of 1667 * interest that the user is currently viewing. For example, an image gallery application 1668 * that has launched in to an activity allowing the user to swipe through pictures should 1669 * modify the intent to reference the current image they are looking it; such an 1670 * application when showing a list of pictures should add a ClipData that has 1671 * references to all of the pictures currently visible on screen.</p> 1672 * 1673 * @param outContent The assist content to return. 1674 */ 1675 public void onProvideAssistContent(AssistContent outContent) { 1676 } 1677 1678 /** 1679 * Request the Keyboard Shortcuts screen to show up. If it succeeds, this will trigger 1680 * {@link #onProvideKeyboardShortcuts} to retrieve the shortcuts for the foreground activity. 1681 */ 1682 public final void requestKeyboardShortcutsHelper() { 1683 Intent intent = new Intent(Intent.ACTION_SHOW_KEYBOARD_SHORTCUTS); 1684 intent.setComponent(new ComponentName("com.android.systemui", 1685 "com.android.systemui.statusbar.KeyboardShortcutsReceiver")); 1686 sendBroadcast(intent); 1687 } 1688 1689 @Override 1690 public void onProvideKeyboardShortcuts( 1691 List<KeyboardShortcutGroup> data, Menu menu, int deviceId) { 1692 if (menu == null) { 1693 return; 1694 } 1695 final InputDevice inputDevice = InputManager.getInstance().getInputDevice(deviceId); 1696 if (inputDevice == null) { 1697 return; 1698 } 1699 final KeyCharacterMap keyCharacterMap = inputDevice.getKeyCharacterMap(); 1700 KeyboardShortcutGroup group = null; 1701 int menuSize = menu.size(); 1702 for (int i = 0; i < menuSize; ++i) { 1703 final MenuItem item = menu.getItem(i); 1704 final CharSequence title = item.getTitle(); 1705 final char alphaShortcut = item.getAlphabeticShortcut(); 1706 if (title != null && alphaShortcut != MIN_VALUE) { 1707 if (group == null) { 1708 final int resource = mApplication.getApplicationInfo().labelRes; 1709 group = new KeyboardShortcutGroup(resource != 0 ? getString(resource) : null); 1710 } 1711 group.addItem(new KeyboardShortcutInfo( 1712 title, alphaShortcut, KeyEvent.META_CTRL_ON)); 1713 } 1714 } 1715 if (group != null) { 1716 data.add(group); 1717 } 1718 } 1719 1720 /** 1721 * Ask to have the current assistant shown to the user. This only works if the calling 1722 * activity is the current foreground activity. It is the same as calling 1723 * {@link android.service.voice.VoiceInteractionService#showSession 1724 * VoiceInteractionService.showSession} and requesting all of the possible context. 1725 * The receiver will always see 1726 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1727 * @return Returns true if the assistant was successfully invoked, else false. For example 1728 * false will be returned if the caller is not the current top activity. 1729 */ 1730 public boolean showAssist(Bundle args) { 1731 try { 1732 return ActivityManagerNative.getDefault().showAssistFromActivity(mToken, args); 1733 } catch (RemoteException e) { 1734 } 1735 return false; 1736 } 1737 1738 /** 1739 * Called when you are no longer visible to the user. You will next 1740 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1741 * depending on later user activity. 1742 * 1743 * <p>Note that this method may never be called, in low memory situations 1744 * where the system does not have enough memory to keep your activity's 1745 * process running after its {@link #onPause} method is called. 1746 * 1747 * <p><em>Derived classes must call through to the super class's 1748 * implementation of this method. If they do not, an exception will be 1749 * thrown.</em></p> 1750 * 1751 * @see #onRestart 1752 * @see #onResume 1753 * @see #onSaveInstanceState 1754 * @see #onDestroy 1755 */ 1756 @CallSuper 1757 protected void onStop() { 1758 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1759 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1760 mActivityTransitionState.onStop(); 1761 getApplication().dispatchActivityStopped(this); 1762 mTranslucentCallback = null; 1763 mCalled = true; 1764 } 1765 1766 /** 1767 * Perform any final cleanup before an activity is destroyed. This can 1768 * happen either because the activity is finishing (someone called 1769 * {@link #finish} on it, or because the system is temporarily destroying 1770 * this instance of the activity to save space. You can distinguish 1771 * between these two scenarios with the {@link #isFinishing} method. 1772 * 1773 * <p><em>Note: do not count on this method being called as a place for 1774 * saving data! For example, if an activity is editing data in a content 1775 * provider, those edits should be committed in either {@link #onPause} or 1776 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1777 * free resources like threads that are associated with an activity, so 1778 * that a destroyed activity does not leave such things around while the 1779 * rest of its application is still running. There are situations where 1780 * the system will simply kill the activity's hosting process without 1781 * calling this method (or any others) in it, so it should not be used to 1782 * do things that are intended to remain around after the process goes 1783 * away. 1784 * 1785 * <p><em>Derived classes must call through to the super class's 1786 * implementation of this method. If they do not, an exception will be 1787 * thrown.</em></p> 1788 * 1789 * @see #onPause 1790 * @see #onStop 1791 * @see #finish 1792 * @see #isFinishing 1793 */ 1794 @CallSuper 1795 protected void onDestroy() { 1796 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1797 mCalled = true; 1798 1799 // dismiss any dialogs we are managing. 1800 if (mManagedDialogs != null) { 1801 final int numDialogs = mManagedDialogs.size(); 1802 for (int i = 0; i < numDialogs; i++) { 1803 final ManagedDialog md = mManagedDialogs.valueAt(i); 1804 if (md.mDialog.isShowing()) { 1805 md.mDialog.dismiss(); 1806 } 1807 } 1808 mManagedDialogs = null; 1809 } 1810 1811 // close any cursors we are managing. 1812 synchronized (mManagedCursors) { 1813 int numCursors = mManagedCursors.size(); 1814 for (int i = 0; i < numCursors; i++) { 1815 ManagedCursor c = mManagedCursors.get(i); 1816 if (c != null) { 1817 c.mCursor.close(); 1818 } 1819 } 1820 mManagedCursors.clear(); 1821 } 1822 1823 // Close any open search dialog 1824 if (mSearchManager != null) { 1825 mSearchManager.stopSearch(); 1826 } 1827 1828 if (mActionBar != null) { 1829 mActionBar.onDestroy(); 1830 } 1831 1832 getApplication().dispatchActivityDestroyed(this); 1833 } 1834 1835 /** 1836 * Report to the system that your app is now fully drawn, purely for diagnostic 1837 * purposes (calling it does not impact the visible behavior of the activity). 1838 * This is only used to help instrument application launch times, so that the 1839 * app can report when it is fully in a usable state; without this, the only thing 1840 * the system itself can determine is the point at which the activity's window 1841 * is <em>first</em> drawn and displayed. To participate in app launch time 1842 * measurement, you should always call this method after first launch (when 1843 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1844 * entirely drawn your UI and populated with all of the significant data. You 1845 * can safely call this method any time after first launch as well, in which case 1846 * it will simply be ignored. 1847 */ 1848 public void reportFullyDrawn() { 1849 if (mDoReportFullyDrawn) { 1850 mDoReportFullyDrawn = false; 1851 try { 1852 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1853 } catch (RemoteException e) { 1854 } 1855 } 1856 } 1857 1858 /** 1859 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1860 * visa-versa. 1861 * @see android.R.attr#resizeableActivity 1862 * 1863 * @param isInMultiWindowMode True if the activity is in multi-window mode. 1864 */ 1865 @CallSuper 1866 public void onMultiWindowModeChanged(boolean isInMultiWindowMode) { 1867 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1868 "onMultiWindowModeChanged " + this + ": " + isInMultiWindowMode); 1869 mFragments.dispatchMultiWindowModeChanged(isInMultiWindowMode); 1870 if (mWindow != null) { 1871 mWindow.onMultiWindowModeChanged(); 1872 } 1873 } 1874 1875 /** 1876 * Returns true if the activity is currently in multi-window mode. 1877 * @see android.R.attr#resizeableActivity 1878 * 1879 * @return True if the activity is in multi-window mode. 1880 */ 1881 public boolean isInMultiWindowMode() { 1882 try { 1883 return ActivityManagerNative.getDefault().isInMultiWindowMode(mToken); 1884 } catch (RemoteException e) { 1885 } 1886 return false; 1887 } 1888 1889 /** 1890 * Called by the system when the activity changes to and from picture-in-picture mode. 1891 * @see android.R.attr#supportsPictureInPicture 1892 * 1893 * @param isInPictureInPictureMode True if the activity is in picture-in-picture mode. 1894 */ 1895 @CallSuper 1896 public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) { 1897 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1898 "onPictureInPictureModeChanged " + this + ": " + isInPictureInPictureMode); 1899 mFragments.dispatchPictureInPictureModeChanged(isInPictureInPictureMode); 1900 } 1901 1902 /** 1903 * Returns true if the activity is currently in picture-in-picture mode. 1904 * @see android.R.attr#supportsPictureInPicture 1905 * 1906 * @return True if the activity is in picture-in-picture mode. 1907 */ 1908 public boolean isInPictureInPictureMode() { 1909 try { 1910 return ActivityManagerNative.getDefault().isInPictureInPictureMode(mToken); 1911 } catch (RemoteException e) { 1912 } 1913 return false; 1914 } 1915 1916 /** 1917 * Puts the activity in picture-in-picture mode. 1918 * @see android.R.attr#supportsPictureInPicture 1919 */ 1920 public void enterPictureInPictureMode() { 1921 try { 1922 ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken); 1923 } catch (RemoteException e) { 1924 } 1925 } 1926 1927 /** 1928 * Called by the system when the device configuration changes while your 1929 * activity is running. Note that this will <em>only</em> be called if 1930 * you have selected configurations you would like to handle with the 1931 * {@link android.R.attr#configChanges} attribute in your manifest. If 1932 * any configuration change occurs that is not selected to be reported 1933 * by that attribute, then instead of reporting it the system will stop 1934 * and restart the activity (to have it launched with the new 1935 * configuration). 1936 * 1937 * <p>At the time that this function has been called, your Resources 1938 * object will have been updated to return resource values matching the 1939 * new configuration. 1940 * 1941 * @param newConfig The new device configuration. 1942 */ 1943 public void onConfigurationChanged(Configuration newConfig) { 1944 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1945 mCalled = true; 1946 1947 mFragments.dispatchConfigurationChanged(newConfig); 1948 1949 if (mWindow != null) { 1950 // Pass the configuration changed event to the window 1951 mWindow.onConfigurationChanged(newConfig); 1952 } 1953 1954 if (mActionBar != null) { 1955 // Do this last; the action bar will need to access 1956 // view changes from above. 1957 mActionBar.onConfigurationChanged(newConfig); 1958 } 1959 } 1960 1961 /** 1962 * If this activity is being destroyed because it can not handle a 1963 * configuration parameter being changed (and thus its 1964 * {@link #onConfigurationChanged(Configuration)} method is 1965 * <em>not</em> being called), then you can use this method to discover 1966 * the set of changes that have occurred while in the process of being 1967 * destroyed. Note that there is no guarantee that these will be 1968 * accurate (other changes could have happened at any time), so you should 1969 * only use this as an optimization hint. 1970 * 1971 * @return Returns a bit field of the configuration parameters that are 1972 * changing, as defined by the {@link android.content.res.Configuration} 1973 * class. 1974 */ 1975 public int getChangingConfigurations() { 1976 return mConfigChangeFlags; 1977 } 1978 1979 /** 1980 * Retrieve the non-configuration instance data that was previously 1981 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1982 * be available from the initial {@link #onCreate} and 1983 * {@link #onStart} calls to the new instance, allowing you to extract 1984 * any useful dynamic state from the previous instance. 1985 * 1986 * <p>Note that the data you retrieve here should <em>only</em> be used 1987 * as an optimization for handling configuration changes. You should always 1988 * be able to handle getting a null pointer back, and an activity must 1989 * still be able to restore itself to its previous state (through the 1990 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1991 * function returns null. 1992 * 1993 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 1994 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1995 * available on older platforms through the Android support libraries. 1996 * 1997 * @return the object previously returned by {@link #onRetainNonConfigurationInstance()} 1998 */ 1999 @Nullable 2000 public Object getLastNonConfigurationInstance() { 2001 return mLastNonConfigurationInstances != null 2002 ? mLastNonConfigurationInstances.activity : null; 2003 } 2004 2005 /** 2006 * Called by the system, as part of destroying an 2007 * activity due to a configuration change, when it is known that a new 2008 * instance will immediately be created for the new configuration. You 2009 * can return any object you like here, including the activity instance 2010 * itself, which can later be retrieved by calling 2011 * {@link #getLastNonConfigurationInstance()} in the new activity 2012 * instance. 2013 * 2014 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2015 * or later, consider instead using a {@link Fragment} with 2016 * {@link Fragment#setRetainInstance(boolean) 2017 * Fragment.setRetainInstance(boolean}.</em> 2018 * 2019 * <p>This function is called purely as an optimization, and you must 2020 * not rely on it being called. When it is called, a number of guarantees 2021 * will be made to help optimize configuration switching: 2022 * <ul> 2023 * <li> The function will be called between {@link #onStop} and 2024 * {@link #onDestroy}. 2025 * <li> A new instance of the activity will <em>always</em> be immediately 2026 * created after this one's {@link #onDestroy()} is called. In particular, 2027 * <em>no</em> messages will be dispatched during this time (when the returned 2028 * object does not have an activity to be associated with). 2029 * <li> The object you return here will <em>always</em> be available from 2030 * the {@link #getLastNonConfigurationInstance()} method of the following 2031 * activity instance as described there. 2032 * </ul> 2033 * 2034 * <p>These guarantees are designed so that an activity can use this API 2035 * to propagate extensive state from the old to new activity instance, from 2036 * loaded bitmaps, to network connections, to evenly actively running 2037 * threads. Note that you should <em>not</em> propagate any data that 2038 * may change based on the configuration, including any data loaded from 2039 * resources such as strings, layouts, or drawables. 2040 * 2041 * <p>The guarantee of no message handling during the switch to the next 2042 * activity simplifies use with active objects. For example if your retained 2043 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2044 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2045 * not be called from the call here until you execute the next instance's 2046 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2047 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2048 * running in a separate thread.) 2049 * 2050 * <p><strong>Note:</strong> For most cases you should use the {@link Fragment} API 2051 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2052 * available on older platforms through the Android support libraries. 2053 * 2054 * @return any Object holding the desired state to propagate to the 2055 * next activity instance 2056 */ 2057 public Object onRetainNonConfigurationInstance() { 2058 return null; 2059 } 2060 2061 /** 2062 * Retrieve the non-configuration instance data that was previously 2063 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2064 * be available from the initial {@link #onCreate} and 2065 * {@link #onStart} calls to the new instance, allowing you to extract 2066 * any useful dynamic state from the previous instance. 2067 * 2068 * <p>Note that the data you retrieve here should <em>only</em> be used 2069 * as an optimization for handling configuration changes. You should always 2070 * be able to handle getting a null pointer back, and an activity must 2071 * still be able to restore itself to its previous state (through the 2072 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2073 * function returns null. 2074 * 2075 * @return Returns the object previously returned by 2076 * {@link #onRetainNonConfigurationChildInstances()} 2077 */ 2078 @Nullable 2079 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2080 return mLastNonConfigurationInstances != null 2081 ? mLastNonConfigurationInstances.children : null; 2082 } 2083 2084 /** 2085 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2086 * it should return either a mapping from child activity id strings to arbitrary objects, 2087 * or null. This method is intended to be used by Activity framework subclasses that control a 2088 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2089 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2090 */ 2091 @Nullable 2092 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2093 return null; 2094 } 2095 2096 NonConfigurationInstances retainNonConfigurationInstances() { 2097 Object activity = onRetainNonConfigurationInstance(); 2098 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2099 FragmentManagerNonConfig fragments = mFragments.retainNestedNonConfig(); 2100 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2101 if (activity == null && children == null && fragments == null && loaders == null 2102 && mVoiceInteractor == null) { 2103 return null; 2104 } 2105 2106 NonConfigurationInstances nci = new NonConfigurationInstances(); 2107 nci.activity = activity; 2108 nci.children = children; 2109 nci.fragments = fragments; 2110 nci.loaders = loaders; 2111 if (mVoiceInteractor != null) { 2112 mVoiceInteractor.retainInstance(); 2113 nci.voiceInteractor = mVoiceInteractor; 2114 } 2115 return nci; 2116 } 2117 2118 public void onLowMemory() { 2119 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2120 mCalled = true; 2121 mFragments.dispatchLowMemory(); 2122 } 2123 2124 public void onTrimMemory(int level) { 2125 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2126 mCalled = true; 2127 mFragments.dispatchTrimMemory(level); 2128 } 2129 2130 /** 2131 * Return the FragmentManager for interacting with fragments associated 2132 * with this activity. 2133 */ 2134 public FragmentManager getFragmentManager() { 2135 return mFragments.getFragmentManager(); 2136 } 2137 2138 /** 2139 * Called when a Fragment is being attached to this activity, immediately 2140 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2141 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2142 */ 2143 public void onAttachFragment(Fragment fragment) { 2144 } 2145 2146 /** 2147 * Wrapper around 2148 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2149 * that gives the resulting {@link Cursor} to call 2150 * {@link #startManagingCursor} so that the activity will manage its 2151 * lifecycle for you. 2152 * 2153 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2154 * or later, consider instead using {@link LoaderManager} instead, available 2155 * via {@link #getLoaderManager()}.</em> 2156 * 2157 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2158 * this method, because the activity will do that for you at the appropriate time. However, if 2159 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2160 * not</em> automatically close the cursor and, in that case, you must call 2161 * {@link Cursor#close()}.</p> 2162 * 2163 * @param uri The URI of the content provider to query. 2164 * @param projection List of columns to return. 2165 * @param selection SQL WHERE clause. 2166 * @param sortOrder SQL ORDER BY clause. 2167 * 2168 * @return The Cursor that was returned by query(). 2169 * 2170 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2171 * @see #startManagingCursor 2172 * @hide 2173 * 2174 * @deprecated Use {@link CursorLoader} instead. 2175 */ 2176 @Deprecated 2177 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2178 String sortOrder) { 2179 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2180 if (c != null) { 2181 startManagingCursor(c); 2182 } 2183 return c; 2184 } 2185 2186 /** 2187 * Wrapper around 2188 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2189 * that gives the resulting {@link Cursor} to call 2190 * {@link #startManagingCursor} so that the activity will manage its 2191 * lifecycle for you. 2192 * 2193 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2194 * or later, consider instead using {@link LoaderManager} instead, available 2195 * via {@link #getLoaderManager()}.</em> 2196 * 2197 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2198 * this method, because the activity will do that for you at the appropriate time. However, if 2199 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2200 * not</em> automatically close the cursor and, in that case, you must call 2201 * {@link Cursor#close()}.</p> 2202 * 2203 * @param uri The URI of the content provider to query. 2204 * @param projection List of columns to return. 2205 * @param selection SQL WHERE clause. 2206 * @param selectionArgs The arguments to selection, if any ?s are pesent 2207 * @param sortOrder SQL ORDER BY clause. 2208 * 2209 * @return The Cursor that was returned by query(). 2210 * 2211 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2212 * @see #startManagingCursor 2213 * 2214 * @deprecated Use {@link CursorLoader} instead. 2215 */ 2216 @Deprecated 2217 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2218 String[] selectionArgs, String sortOrder) { 2219 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2220 if (c != null) { 2221 startManagingCursor(c); 2222 } 2223 return c; 2224 } 2225 2226 /** 2227 * This method allows the activity to take care of managing the given 2228 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2229 * That is, when the activity is stopped it will automatically call 2230 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2231 * it will call {@link Cursor#requery} for you. When the activity is 2232 * destroyed, all managed Cursors will be closed automatically. 2233 * 2234 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2235 * or later, consider instead using {@link LoaderManager} instead, available 2236 * via {@link #getLoaderManager()}.</em> 2237 * 2238 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2239 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2240 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2241 * <em>will not</em> automatically close the cursor and, in that case, you must call 2242 * {@link Cursor#close()}.</p> 2243 * 2244 * @param c The Cursor to be managed. 2245 * 2246 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2247 * @see #stopManagingCursor 2248 * 2249 * @deprecated Use the new {@link android.content.CursorLoader} class with 2250 * {@link LoaderManager} instead; this is also 2251 * available on older platforms through the Android compatibility package. 2252 */ 2253 @Deprecated 2254 public void startManagingCursor(Cursor c) { 2255 synchronized (mManagedCursors) { 2256 mManagedCursors.add(new ManagedCursor(c)); 2257 } 2258 } 2259 2260 /** 2261 * Given a Cursor that was previously given to 2262 * {@link #startManagingCursor}, stop the activity's management of that 2263 * cursor. 2264 * 2265 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2266 * the system <em>will not</em> automatically close the cursor and you must call 2267 * {@link Cursor#close()}.</p> 2268 * 2269 * @param c The Cursor that was being managed. 2270 * 2271 * @see #startManagingCursor 2272 * 2273 * @deprecated Use the new {@link android.content.CursorLoader} class with 2274 * {@link LoaderManager} instead; this is also 2275 * available on older platforms through the Android compatibility package. 2276 */ 2277 @Deprecated 2278 public void stopManagingCursor(Cursor c) { 2279 synchronized (mManagedCursors) { 2280 final int N = mManagedCursors.size(); 2281 for (int i=0; i<N; i++) { 2282 ManagedCursor mc = mManagedCursors.get(i); 2283 if (mc.mCursor == c) { 2284 mManagedCursors.remove(i); 2285 break; 2286 } 2287 } 2288 } 2289 } 2290 2291 /** 2292 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2293 * this is a no-op. 2294 * @hide 2295 */ 2296 @Deprecated 2297 public void setPersistent(boolean isPersistent) { 2298 } 2299 2300 /** 2301 * Finds a view that was identified by the id attribute from the XML that 2302 * was processed in {@link #onCreate}. 2303 * 2304 * @return The view if found or null otherwise. 2305 */ 2306 @Nullable 2307 public View findViewById(@IdRes int id) { 2308 return getWindow().findViewById(id); 2309 } 2310 2311 /** 2312 * Retrieve a reference to this activity's ActionBar. 2313 * 2314 * @return The Activity's ActionBar, or null if it does not have one. 2315 */ 2316 @Nullable 2317 public ActionBar getActionBar() { 2318 initWindowDecorActionBar(); 2319 return mActionBar; 2320 } 2321 2322 /** 2323 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2324 * Activity window. 2325 * 2326 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2327 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2328 * a traditional window decor action bar. The toolbar's menu will be populated with the 2329 * Activity's options menu and the navigation button will be wired through the standard 2330 * {@link android.R.id#home home} menu select action.</p> 2331 * 2332 * <p>In order to use a Toolbar within the Activity's window content the application 2333 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2334 * 2335 * @param toolbar Toolbar to set as the Activity's action bar, or {@code null} to clear it 2336 */ 2337 public void setActionBar(@Nullable Toolbar toolbar) { 2338 final ActionBar ab = getActionBar(); 2339 if (ab instanceof WindowDecorActionBar) { 2340 throw new IllegalStateException("This Activity already has an action bar supplied " + 2341 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2342 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2343 } 2344 2345 // If we reach here then we're setting a new action bar 2346 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2347 mMenuInflater = null; 2348 2349 // If we have an action bar currently, destroy it 2350 if (ab != null) { 2351 ab.onDestroy(); 2352 } 2353 2354 if (toolbar != null) { 2355 final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2356 mActionBar = tbab; 2357 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2358 } else { 2359 mActionBar = null; 2360 // Re-set the original window callback since we may have already set a Toolbar wrapper 2361 mWindow.setCallback(this); 2362 } 2363 2364 invalidateOptionsMenu(); 2365 } 2366 2367 /** 2368 * Creates a new ActionBar, locates the inflated ActionBarView, 2369 * initializes the ActionBar with the view, and sets mActionBar. 2370 */ 2371 private void initWindowDecorActionBar() { 2372 Window window = getWindow(); 2373 2374 // Initializing the window decor can change window feature flags. 2375 // Make sure that we have the correct set before performing the test below. 2376 window.getDecorView(); 2377 2378 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2379 return; 2380 } 2381 2382 mActionBar = new WindowDecorActionBar(this); 2383 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2384 2385 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2386 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2387 } 2388 2389 /** 2390 * Set the activity content from a layout resource. The resource will be 2391 * inflated, adding all top-level views to the activity. 2392 * 2393 * @param layoutResID Resource ID to be inflated. 2394 * 2395 * @see #setContentView(android.view.View) 2396 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2397 */ 2398 public void setContentView(@LayoutRes int layoutResID) { 2399 getWindow().setContentView(layoutResID); 2400 initWindowDecorActionBar(); 2401 } 2402 2403 /** 2404 * Set the activity content to an explicit view. This view is placed 2405 * directly into the activity's view hierarchy. It can itself be a complex 2406 * view hierarchy. When calling this method, the layout parameters of the 2407 * specified view are ignored. Both the width and the height of the view are 2408 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2409 * your own layout parameters, invoke 2410 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2411 * instead. 2412 * 2413 * @param view The desired content to display. 2414 * 2415 * @see #setContentView(int) 2416 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2417 */ 2418 public void setContentView(View view) { 2419 getWindow().setContentView(view); 2420 initWindowDecorActionBar(); 2421 } 2422 2423 /** 2424 * Set the activity content to an explicit view. This view is placed 2425 * directly into the activity's view hierarchy. It can itself be a complex 2426 * view hierarchy. 2427 * 2428 * @param view The desired content to display. 2429 * @param params Layout parameters for the view. 2430 * 2431 * @see #setContentView(android.view.View) 2432 * @see #setContentView(int) 2433 */ 2434 public void setContentView(View view, ViewGroup.LayoutParams params) { 2435 getWindow().setContentView(view, params); 2436 initWindowDecorActionBar(); 2437 } 2438 2439 /** 2440 * Add an additional content view to the activity. Added after any existing 2441 * ones in the activity -- existing views are NOT removed. 2442 * 2443 * @param view The desired content to display. 2444 * @param params Layout parameters for the view. 2445 */ 2446 public void addContentView(View view, ViewGroup.LayoutParams params) { 2447 getWindow().addContentView(view, params); 2448 initWindowDecorActionBar(); 2449 } 2450 2451 /** 2452 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2453 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2454 * 2455 * <p>This method will return non-null after content has been initialized (e.g. by using 2456 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2457 * 2458 * @return This window's content TransitionManager or null if none is set. 2459 */ 2460 public TransitionManager getContentTransitionManager() { 2461 return getWindow().getTransitionManager(); 2462 } 2463 2464 /** 2465 * Set the {@link TransitionManager} to use for default transitions in this window. 2466 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2467 * 2468 * @param tm The TransitionManager to use for scene changes. 2469 */ 2470 public void setContentTransitionManager(TransitionManager tm) { 2471 getWindow().setTransitionManager(tm); 2472 } 2473 2474 /** 2475 * Retrieve the {@link Scene} representing this window's current content. 2476 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2477 * 2478 * <p>This method will return null if the current content is not represented by a Scene.</p> 2479 * 2480 * @return Current Scene being shown or null 2481 */ 2482 public Scene getContentScene() { 2483 return getWindow().getContentScene(); 2484 } 2485 2486 /** 2487 * Sets whether this activity is finished when touched outside its window's 2488 * bounds. 2489 */ 2490 public void setFinishOnTouchOutside(boolean finish) { 2491 mWindow.setCloseOnTouchOutside(finish); 2492 } 2493 2494 /** @hide */ 2495 @IntDef({ 2496 DEFAULT_KEYS_DISABLE, 2497 DEFAULT_KEYS_DIALER, 2498 DEFAULT_KEYS_SHORTCUT, 2499 DEFAULT_KEYS_SEARCH_LOCAL, 2500 DEFAULT_KEYS_SEARCH_GLOBAL}) 2501 @Retention(RetentionPolicy.SOURCE) 2502 @interface DefaultKeyMode {} 2503 2504 /** 2505 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2506 * keys. 2507 * 2508 * @see #setDefaultKeyMode 2509 */ 2510 static public final int DEFAULT_KEYS_DISABLE = 0; 2511 /** 2512 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2513 * key handling. 2514 * 2515 * @see #setDefaultKeyMode 2516 */ 2517 static public final int DEFAULT_KEYS_DIALER = 1; 2518 /** 2519 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2520 * default key handling. 2521 * 2522 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2523 * 2524 * @see #setDefaultKeyMode 2525 */ 2526 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2527 /** 2528 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2529 * will start an application-defined search. (If the application or activity does not 2530 * actually define a search, the the keys will be ignored.) 2531 * 2532 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2533 * 2534 * @see #setDefaultKeyMode 2535 */ 2536 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2537 2538 /** 2539 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2540 * will start a global search (typically web search, but some platforms may define alternate 2541 * methods for global search) 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_GLOBAL = 4; 2548 2549 /** 2550 * Select the default key handling for this activity. This controls what 2551 * will happen to key events that are not otherwise handled. The default 2552 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2553 * floor. Other modes allow you to launch the dialer 2554 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2555 * menu without requiring the menu key be held down 2556 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2557 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2558 * 2559 * <p>Note that the mode selected here does not impact the default 2560 * handling of system keys, such as the "back" and "menu" keys, and your 2561 * activity and its views always get a first chance to receive and handle 2562 * all application keys. 2563 * 2564 * @param mode The desired default key mode constant. 2565 * 2566 * @see #DEFAULT_KEYS_DISABLE 2567 * @see #DEFAULT_KEYS_DIALER 2568 * @see #DEFAULT_KEYS_SHORTCUT 2569 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2570 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2571 * @see #onKeyDown 2572 */ 2573 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2574 mDefaultKeyMode = mode; 2575 2576 // Some modes use a SpannableStringBuilder to track & dispatch input events 2577 // This list must remain in sync with the switch in onKeyDown() 2578 switch (mode) { 2579 case DEFAULT_KEYS_DISABLE: 2580 case DEFAULT_KEYS_SHORTCUT: 2581 mDefaultKeySsb = null; // not used in these modes 2582 break; 2583 case DEFAULT_KEYS_DIALER: 2584 case DEFAULT_KEYS_SEARCH_LOCAL: 2585 case DEFAULT_KEYS_SEARCH_GLOBAL: 2586 mDefaultKeySsb = new SpannableStringBuilder(); 2587 Selection.setSelection(mDefaultKeySsb,0); 2588 break; 2589 default: 2590 throw new IllegalArgumentException(); 2591 } 2592 } 2593 2594 /** 2595 * Called when a key was pressed down and not handled by any of the views 2596 * inside of the activity. So, for example, key presses while the cursor 2597 * is inside a TextView will not trigger the event (unless it is a navigation 2598 * to another object) because TextView handles its own key presses. 2599 * 2600 * <p>If the focused view didn't want this event, this method is called. 2601 * 2602 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2603 * by calling {@link #onBackPressed()}, though the behavior varies based 2604 * on the application compatibility mode: for 2605 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2606 * it will set up the dispatch to call {@link #onKeyUp} where the action 2607 * will be performed; for earlier applications, it will perform the 2608 * action immediately in on-down, as those versions of the platform 2609 * behaved. 2610 * 2611 * <p>Other additional default key handling may be performed 2612 * if configured with {@link #setDefaultKeyMode}. 2613 * 2614 * @return Return <code>true</code> to prevent this event from being propagated 2615 * further, or <code>false</code> to indicate that you have not handled 2616 * this event and it should continue to be propagated. 2617 * @see #onKeyUp 2618 * @see android.view.KeyEvent 2619 */ 2620 public boolean onKeyDown(int keyCode, KeyEvent event) { 2621 if (keyCode == KeyEvent.KEYCODE_BACK) { 2622 if (getApplicationInfo().targetSdkVersion 2623 >= Build.VERSION_CODES.ECLAIR) { 2624 event.startTracking(); 2625 } else { 2626 onBackPressed(); 2627 } 2628 return true; 2629 } 2630 2631 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2632 return false; 2633 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2634 Window w = getWindow(); 2635 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2636 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2637 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2638 return true; 2639 } 2640 return false; 2641 } else { 2642 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2643 boolean clearSpannable = false; 2644 boolean handled; 2645 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2646 clearSpannable = true; 2647 handled = false; 2648 } else { 2649 handled = TextKeyListener.getInstance().onKeyDown( 2650 null, mDefaultKeySsb, keyCode, event); 2651 if (handled && mDefaultKeySsb.length() > 0) { 2652 // something useable has been typed - dispatch it now. 2653 2654 final String str = mDefaultKeySsb.toString(); 2655 clearSpannable = true; 2656 2657 switch (mDefaultKeyMode) { 2658 case DEFAULT_KEYS_DIALER: 2659 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2660 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2661 startActivity(intent); 2662 break; 2663 case DEFAULT_KEYS_SEARCH_LOCAL: 2664 startSearch(str, false, null, false); 2665 break; 2666 case DEFAULT_KEYS_SEARCH_GLOBAL: 2667 startSearch(str, false, null, true); 2668 break; 2669 } 2670 } 2671 } 2672 if (clearSpannable) { 2673 mDefaultKeySsb.clear(); 2674 mDefaultKeySsb.clearSpans(); 2675 Selection.setSelection(mDefaultKeySsb,0); 2676 } 2677 return handled; 2678 } 2679 } 2680 2681 /** 2682 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2683 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2684 * the event). 2685 */ 2686 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2687 return false; 2688 } 2689 2690 /** 2691 * Called when a key was released and not handled by any of the views 2692 * inside of the activity. So, for example, key presses while the cursor 2693 * is inside a TextView will not trigger the event (unless it is a navigation 2694 * to another object) because TextView handles its own key presses. 2695 * 2696 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2697 * and go back. 2698 * 2699 * @return Return <code>true</code> to prevent this event from being propagated 2700 * further, or <code>false</code> to indicate that you have not handled 2701 * this event and it should continue to be propagated. 2702 * @see #onKeyDown 2703 * @see KeyEvent 2704 */ 2705 public boolean onKeyUp(int keyCode, KeyEvent event) { 2706 if (getApplicationInfo().targetSdkVersion 2707 >= Build.VERSION_CODES.ECLAIR) { 2708 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2709 && !event.isCanceled()) { 2710 onBackPressed(); 2711 return true; 2712 } 2713 } 2714 return false; 2715 } 2716 2717 /** 2718 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2719 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2720 * the event). 2721 */ 2722 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2723 return false; 2724 } 2725 2726 /** 2727 * Called when the activity has detected the user's press of the back 2728 * key. The default implementation simply finishes the current activity, 2729 * but you can override this to do whatever you want. 2730 */ 2731 public void onBackPressed() { 2732 if (mActionBar != null && mActionBar.collapseActionView()) { 2733 return; 2734 } 2735 2736 if (!mFragments.getFragmentManager().popBackStackImmediate()) { 2737 finishAfterTransition(); 2738 } 2739 } 2740 2741 /** 2742 * Called when a key shortcut event is not handled by any of the views in the Activity. 2743 * Override this method to implement global key shortcuts for the Activity. 2744 * Key shortcuts can also be implemented by setting the 2745 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2746 * 2747 * @param keyCode The value in event.getKeyCode(). 2748 * @param event Description of the key event. 2749 * @return True if the key shortcut was handled. 2750 */ 2751 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2752 // Let the Action Bar have a chance at handling the shortcut. 2753 ActionBar actionBar = getActionBar(); 2754 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 2755 } 2756 2757 /** 2758 * Called when a touch screen event was not handled by any of the views 2759 * under it. This is most useful to process touch events that happen 2760 * outside of your window bounds, where there is no view to receive it. 2761 * 2762 * @param event The touch screen event being processed. 2763 * 2764 * @return Return true if you have consumed the event, false if you haven't. 2765 * The default implementation always returns false. 2766 */ 2767 public boolean onTouchEvent(MotionEvent event) { 2768 if (mWindow.shouldCloseOnTouch(this, event)) { 2769 finish(); 2770 return true; 2771 } 2772 2773 return false; 2774 } 2775 2776 /** 2777 * Called when the trackball was moved and not handled by any of the 2778 * views inside of the activity. So, for example, if the trackball moves 2779 * while focus is on a button, you will receive a call here because 2780 * buttons do not normally do anything with trackball events. The call 2781 * here happens <em>before</em> trackball movements are converted to 2782 * DPAD key events, which then get sent back to the view hierarchy, and 2783 * will be processed at the point for things like focus navigation. 2784 * 2785 * @param event The trackball event being processed. 2786 * 2787 * @return Return true if you have consumed the event, false if you haven't. 2788 * The default implementation always returns false. 2789 */ 2790 public boolean onTrackballEvent(MotionEvent event) { 2791 return false; 2792 } 2793 2794 /** 2795 * Called when a generic motion event was not handled by any of the 2796 * views inside of the activity. 2797 * <p> 2798 * Generic motion events describe joystick movements, mouse hovers, track pad 2799 * touches, scroll wheel movements and other input events. The 2800 * {@link MotionEvent#getSource() source} of the motion event specifies 2801 * the class of input that was received. Implementations of this method 2802 * must examine the bits in the source before processing the event. 2803 * The following code example shows how this is done. 2804 * </p><p> 2805 * Generic motion events with source class 2806 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2807 * are delivered to the view under the pointer. All other generic motion events are 2808 * delivered to the focused view. 2809 * </p><p> 2810 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2811 * handle this event. 2812 * </p> 2813 * 2814 * @param event The generic motion event being processed. 2815 * 2816 * @return Return true if you have consumed the event, false if you haven't. 2817 * The default implementation always returns false. 2818 */ 2819 public boolean onGenericMotionEvent(MotionEvent event) { 2820 return false; 2821 } 2822 2823 /** 2824 * Called whenever a key, touch, or trackball event is dispatched to the 2825 * activity. Implement this method if you wish to know that the user has 2826 * interacted with the device in some way while your activity is running. 2827 * This callback and {@link #onUserLeaveHint} are intended to help 2828 * activities manage status bar notifications intelligently; specifically, 2829 * for helping activities determine the proper time to cancel a notfication. 2830 * 2831 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2832 * be accompanied by calls to {@link #onUserInteraction}. This 2833 * ensures that your activity will be told of relevant user activity such 2834 * as pulling down the notification pane and touching an item there. 2835 * 2836 * <p>Note that this callback will be invoked for the touch down action 2837 * that begins a touch gesture, but may not be invoked for the touch-moved 2838 * and touch-up actions that follow. 2839 * 2840 * @see #onUserLeaveHint() 2841 */ 2842 public void onUserInteraction() { 2843 } 2844 2845 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2846 // Update window manager if: we have a view, that view is 2847 // attached to its parent (which will be a RootView), and 2848 // this activity is not embedded. 2849 if (mParent == null) { 2850 View decor = mDecor; 2851 if (decor != null && decor.getParent() != null) { 2852 getWindowManager().updateViewLayout(decor, params); 2853 } 2854 } 2855 } 2856 2857 public void onContentChanged() { 2858 } 2859 2860 /** 2861 * Called when the current {@link Window} of the activity gains or loses 2862 * focus. This is the best indicator of whether this activity is visible 2863 * to the user. The default implementation clears the key tracking 2864 * state, so should always be called. 2865 * 2866 * <p>Note that this provides information about global focus state, which 2867 * is managed independently of activity lifecycles. As such, while focus 2868 * changes will generally have some relation to lifecycle changes (an 2869 * activity that is stopped will not generally get window focus), you 2870 * should not rely on any particular order between the callbacks here and 2871 * those in the other lifecycle methods such as {@link #onResume}. 2872 * 2873 * <p>As a general rule, however, a resumed activity will have window 2874 * focus... unless it has displayed other dialogs or popups that take 2875 * input focus, in which case the activity itself will not have focus 2876 * when the other windows have it. Likewise, the system may display 2877 * system-level windows (such as the status bar notification panel or 2878 * a system alert) which will temporarily take window input focus without 2879 * pausing the foreground activity. 2880 * 2881 * @param hasFocus Whether the window of this activity has focus. 2882 * 2883 * @see #hasWindowFocus() 2884 * @see #onResume 2885 * @see View#onWindowFocusChanged(boolean) 2886 */ 2887 public void onWindowFocusChanged(boolean hasFocus) { 2888 } 2889 2890 /** 2891 * Called when the main window associated with the activity has been 2892 * attached to the window manager. 2893 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2894 * for more information. 2895 * @see View#onAttachedToWindow 2896 */ 2897 public void onAttachedToWindow() { 2898 } 2899 2900 /** 2901 * Called when the main window associated with the activity has been 2902 * detached from the window manager. 2903 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2904 * for more information. 2905 * @see View#onDetachedFromWindow 2906 */ 2907 public void onDetachedFromWindow() { 2908 } 2909 2910 /** 2911 * Returns true if this activity's <em>main</em> window currently has window focus. 2912 * Note that this is not the same as the view itself having focus. 2913 * 2914 * @return True if this activity's main window currently has window focus. 2915 * 2916 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2917 */ 2918 public boolean hasWindowFocus() { 2919 Window w = getWindow(); 2920 if (w != null) { 2921 View d = w.getDecorView(); 2922 if (d != null) { 2923 return d.hasWindowFocus(); 2924 } 2925 } 2926 return false; 2927 } 2928 2929 /** 2930 * Called when the main window associated with the activity has been dismissed. 2931 * @hide 2932 */ 2933 @Override 2934 public void onWindowDismissed(boolean finishTask) { 2935 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 2936 } 2937 2938 2939 /** 2940 * Moves the activity from 2941 * {@link android.app.ActivityManager.StackId#FREEFORM_WORKSPACE_STACK_ID} to 2942 * {@link android.app.ActivityManager.StackId#FULLSCREEN_WORKSPACE_STACK_ID} stack. 2943 * 2944 * @hide 2945 */ 2946 @Override 2947 public void exitFreeformMode() throws RemoteException { 2948 ActivityManagerNative.getDefault().exitFreeformMode(mToken); 2949 } 2950 2951 /** Returns the current stack Id for the window. 2952 * @hide 2953 */ 2954 @Override 2955 public int getWindowStackId() throws RemoteException { 2956 return ActivityManagerNative.getDefault().getActivityStackId(mToken); 2957 } 2958 2959 /** 2960 * Called to process key events. You can override this to intercept all 2961 * key events before they are dispatched to the window. Be sure to call 2962 * this implementation for key events that should be handled normally. 2963 * 2964 * @param event The key event. 2965 * 2966 * @return boolean Return true if this event was consumed. 2967 */ 2968 public boolean dispatchKeyEvent(KeyEvent event) { 2969 onUserInteraction(); 2970 2971 // Let action bars open menus in response to the menu key prioritized over 2972 // the window handling it 2973 final int keyCode = event.getKeyCode(); 2974 if (keyCode == KeyEvent.KEYCODE_MENU && 2975 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2976 return true; 2977 } else if (event.isCtrlPressed() && 2978 event.getUnicodeChar(event.getMetaState() & ~KeyEvent.META_CTRL_MASK) == '<') { 2979 // Capture the Control-< and send focus to the ActionBar 2980 final int action = event.getAction(); 2981 if (action == KeyEvent.ACTION_DOWN) { 2982 final ActionBar actionBar = getActionBar(); 2983 if (actionBar != null && actionBar.isShowing() && actionBar.requestFocus()) { 2984 mEatKeyUpEvent = true; 2985 return true; 2986 } 2987 } else if (action == KeyEvent.ACTION_UP && mEatKeyUpEvent) { 2988 mEatKeyUpEvent = false; 2989 return true; 2990 } 2991 } 2992 2993 Window win = getWindow(); 2994 if (win.superDispatchKeyEvent(event)) { 2995 return true; 2996 } 2997 View decor = mDecor; 2998 if (decor == null) decor = win.getDecorView(); 2999 return event.dispatch(this, decor != null 3000 ? decor.getKeyDispatcherState() : null, this); 3001 } 3002 3003 /** 3004 * Called to process a key shortcut event. 3005 * You can override this to intercept all key shortcut events before they are 3006 * dispatched to the window. Be sure to call this implementation for key shortcut 3007 * events that should be handled normally. 3008 * 3009 * @param event The key shortcut event. 3010 * @return True if this event was consumed. 3011 */ 3012 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 3013 onUserInteraction(); 3014 if (getWindow().superDispatchKeyShortcutEvent(event)) { 3015 return true; 3016 } 3017 return onKeyShortcut(event.getKeyCode(), event); 3018 } 3019 3020 /** 3021 * Called to process touch screen events. You can override this to 3022 * intercept all touch screen events before they are dispatched to the 3023 * window. Be sure to call this implementation for touch screen events 3024 * that should be handled normally. 3025 * 3026 * @param ev The touch screen event. 3027 * 3028 * @return boolean Return true if this event was consumed. 3029 */ 3030 public boolean dispatchTouchEvent(MotionEvent ev) { 3031 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3032 onUserInteraction(); 3033 } 3034 if (getWindow().superDispatchTouchEvent(ev)) { 3035 return true; 3036 } 3037 return onTouchEvent(ev); 3038 } 3039 3040 /** 3041 * Called to process trackball events. You can override this to 3042 * intercept all trackball events before they are dispatched to the 3043 * window. Be sure to call this implementation for trackball events 3044 * that should be handled normally. 3045 * 3046 * @param ev The trackball event. 3047 * 3048 * @return boolean Return true if this event was consumed. 3049 */ 3050 public boolean dispatchTrackballEvent(MotionEvent ev) { 3051 onUserInteraction(); 3052 if (getWindow().superDispatchTrackballEvent(ev)) { 3053 return true; 3054 } 3055 return onTrackballEvent(ev); 3056 } 3057 3058 /** 3059 * Called to process generic motion events. You can override this to 3060 * intercept all generic motion events before they are dispatched to the 3061 * window. Be sure to call this implementation for generic motion events 3062 * that should be handled normally. 3063 * 3064 * @param ev The generic motion event. 3065 * 3066 * @return boolean Return true if this event was consumed. 3067 */ 3068 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3069 onUserInteraction(); 3070 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3071 return true; 3072 } 3073 return onGenericMotionEvent(ev); 3074 } 3075 3076 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3077 event.setClassName(getClass().getName()); 3078 event.setPackageName(getPackageName()); 3079 3080 LayoutParams params = getWindow().getAttributes(); 3081 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3082 (params.height == LayoutParams.MATCH_PARENT); 3083 event.setFullScreen(isFullScreen); 3084 3085 CharSequence title = getTitle(); 3086 if (!TextUtils.isEmpty(title)) { 3087 event.getText().add(title); 3088 } 3089 3090 return true; 3091 } 3092 3093 /** 3094 * Default implementation of 3095 * {@link android.view.Window.Callback#onCreatePanelView} 3096 * for activities. This 3097 * simply returns null so that all panel sub-windows will have the default 3098 * menu behavior. 3099 */ 3100 @Nullable 3101 public View onCreatePanelView(int featureId) { 3102 return null; 3103 } 3104 3105 /** 3106 * Default implementation of 3107 * {@link android.view.Window.Callback#onCreatePanelMenu} 3108 * for activities. This calls through to the new 3109 * {@link #onCreateOptionsMenu} method for the 3110 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3111 * so that subclasses of Activity don't need to deal with feature codes. 3112 */ 3113 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3114 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3115 boolean show = onCreateOptionsMenu(menu); 3116 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3117 return show; 3118 } 3119 return false; 3120 } 3121 3122 /** 3123 * Default implementation of 3124 * {@link android.view.Window.Callback#onPreparePanel} 3125 * for activities. This 3126 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3127 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3128 * panel, so that subclasses of 3129 * Activity don't need to deal with feature codes. 3130 */ 3131 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3132 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3133 boolean goforit = onPrepareOptionsMenu(menu); 3134 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3135 return goforit; 3136 } 3137 return true; 3138 } 3139 3140 /** 3141 * {@inheritDoc} 3142 * 3143 * @return The default implementation returns true. 3144 */ 3145 public boolean onMenuOpened(int featureId, Menu menu) { 3146 if (featureId == Window.FEATURE_ACTION_BAR) { 3147 initWindowDecorActionBar(); 3148 if (mActionBar != null) { 3149 mActionBar.dispatchMenuVisibilityChanged(true); 3150 } else { 3151 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3152 } 3153 } 3154 return true; 3155 } 3156 3157 /** 3158 * Default implementation of 3159 * {@link android.view.Window.Callback#onMenuItemSelected} 3160 * for activities. This calls through to the new 3161 * {@link #onOptionsItemSelected} method for the 3162 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3163 * panel, so that subclasses of 3164 * Activity don't need to deal with feature codes. 3165 */ 3166 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3167 CharSequence titleCondensed = item.getTitleCondensed(); 3168 3169 switch (featureId) { 3170 case Window.FEATURE_OPTIONS_PANEL: 3171 // Put event logging here so it gets called even if subclass 3172 // doesn't call through to superclass's implmeentation of each 3173 // of these methods below 3174 if(titleCondensed != null) { 3175 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3176 } 3177 if (onOptionsItemSelected(item)) { 3178 return true; 3179 } 3180 if (mFragments.dispatchOptionsItemSelected(item)) { 3181 return true; 3182 } 3183 if (item.getItemId() == android.R.id.home && mActionBar != null && 3184 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3185 if (mParent == null) { 3186 return onNavigateUp(); 3187 } else { 3188 return mParent.onNavigateUpFromChild(this); 3189 } 3190 } 3191 return false; 3192 3193 case Window.FEATURE_CONTEXT_MENU: 3194 if(titleCondensed != null) { 3195 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3196 } 3197 if (onContextItemSelected(item)) { 3198 return true; 3199 } 3200 return mFragments.dispatchContextItemSelected(item); 3201 3202 default: 3203 return false; 3204 } 3205 } 3206 3207 /** 3208 * Default implementation of 3209 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3210 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3211 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3212 * so that subclasses of Activity don't need to deal with feature codes. 3213 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3214 * {@link #onContextMenuClosed(Menu)} will be called. 3215 */ 3216 public void onPanelClosed(int featureId, Menu menu) { 3217 switch (featureId) { 3218 case Window.FEATURE_OPTIONS_PANEL: 3219 mFragments.dispatchOptionsMenuClosed(menu); 3220 onOptionsMenuClosed(menu); 3221 break; 3222 3223 case Window.FEATURE_CONTEXT_MENU: 3224 onContextMenuClosed(menu); 3225 break; 3226 3227 case Window.FEATURE_ACTION_BAR: 3228 initWindowDecorActionBar(); 3229 mActionBar.dispatchMenuVisibilityChanged(false); 3230 break; 3231 } 3232 } 3233 3234 /** 3235 * Declare that the options menu has changed, so should be recreated. 3236 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3237 * time it needs to be displayed. 3238 */ 3239 public void invalidateOptionsMenu() { 3240 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3241 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3242 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3243 } 3244 } 3245 3246 /** 3247 * Initialize the contents of the Activity's standard options menu. You 3248 * should place your menu items in to <var>menu</var>. 3249 * 3250 * <p>This is only called once, the first time the options menu is 3251 * displayed. To update the menu every time it is displayed, see 3252 * {@link #onPrepareOptionsMenu}. 3253 * 3254 * <p>The default implementation populates the menu with standard system 3255 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3256 * they will be correctly ordered with application-defined menu items. 3257 * Deriving classes should always call through to the base implementation. 3258 * 3259 * <p>You can safely hold on to <var>menu</var> (and any items created 3260 * from it), making modifications to it as desired, until the next 3261 * time onCreateOptionsMenu() is called. 3262 * 3263 * <p>When you add items to the menu, you can implement the Activity's 3264 * {@link #onOptionsItemSelected} method to handle them there. 3265 * 3266 * @param menu The options menu in which you place your items. 3267 * 3268 * @return You must return true for the menu to be displayed; 3269 * if you return false it will not be shown. 3270 * 3271 * @see #onPrepareOptionsMenu 3272 * @see #onOptionsItemSelected 3273 */ 3274 public boolean onCreateOptionsMenu(Menu menu) { 3275 if (mParent != null) { 3276 return mParent.onCreateOptionsMenu(menu); 3277 } 3278 return true; 3279 } 3280 3281 /** 3282 * Prepare the Screen's standard options menu to be displayed. This is 3283 * called right before the menu is shown, every time it is shown. You can 3284 * use this method to efficiently enable/disable items or otherwise 3285 * dynamically modify the contents. 3286 * 3287 * <p>The default implementation updates the system menu items based on the 3288 * activity's state. Deriving classes should always call through to the 3289 * base class implementation. 3290 * 3291 * @param menu The options menu as last shown or first initialized by 3292 * onCreateOptionsMenu(). 3293 * 3294 * @return You must return true for the menu to be displayed; 3295 * if you return false it will not be shown. 3296 * 3297 * @see #onCreateOptionsMenu 3298 */ 3299 public boolean onPrepareOptionsMenu(Menu menu) { 3300 if (mParent != null) { 3301 return mParent.onPrepareOptionsMenu(menu); 3302 } 3303 return true; 3304 } 3305 3306 /** 3307 * This hook is called whenever an item in your options menu is selected. 3308 * The default implementation simply returns false to have the normal 3309 * processing happen (calling the item's Runnable or sending a message to 3310 * its Handler as appropriate). You can use this method for any items 3311 * for which you would like to do processing without those other 3312 * facilities. 3313 * 3314 * <p>Derived classes should call through to the base class for it to 3315 * perform the default menu handling.</p> 3316 * 3317 * @param item The menu item that was selected. 3318 * 3319 * @return boolean Return false to allow normal menu processing to 3320 * proceed, true to consume it here. 3321 * 3322 * @see #onCreateOptionsMenu 3323 */ 3324 public boolean onOptionsItemSelected(MenuItem item) { 3325 if (mParent != null) { 3326 return mParent.onOptionsItemSelected(item); 3327 } 3328 return false; 3329 } 3330 3331 /** 3332 * This method is called whenever the user chooses to navigate Up within your application's 3333 * activity hierarchy from the action bar. 3334 * 3335 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3336 * was specified in the manifest for this activity or an activity-alias to it, 3337 * default Up navigation will be handled automatically. If any activity 3338 * along the parent chain requires extra Intent arguments, the Activity subclass 3339 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3340 * to supply those arguments.</p> 3341 * 3342 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3343 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3344 * from the design guide for more information about navigating within your app.</p> 3345 * 3346 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3347 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3348 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3349 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3350 * 3351 * @return true if Up navigation completed successfully and this Activity was finished, 3352 * false otherwise. 3353 */ 3354 public boolean onNavigateUp() { 3355 // Automatically handle hierarchical Up navigation if the proper 3356 // metadata is available. 3357 Intent upIntent = getParentActivityIntent(); 3358 if (upIntent != null) { 3359 if (mActivityInfo.taskAffinity == null) { 3360 // Activities with a null affinity are special; they really shouldn't 3361 // specify a parent activity intent in the first place. Just finish 3362 // the current activity and call it a day. 3363 finish(); 3364 } else if (shouldUpRecreateTask(upIntent)) { 3365 TaskStackBuilder b = TaskStackBuilder.create(this); 3366 onCreateNavigateUpTaskStack(b); 3367 onPrepareNavigateUpTaskStack(b); 3368 b.startActivities(); 3369 3370 // We can't finishAffinity if we have a result. 3371 // Fall back and simply finish the current activity instead. 3372 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3373 // Tell the developer what's going on to avoid hair-pulling. 3374 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3375 finish(); 3376 } else { 3377 finishAffinity(); 3378 } 3379 } else { 3380 navigateUpTo(upIntent); 3381 } 3382 return true; 3383 } 3384 return false; 3385 } 3386 3387 /** 3388 * This is called when a child activity of this one attempts to navigate up. 3389 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3390 * 3391 * @param child The activity making the call. 3392 */ 3393 public boolean onNavigateUpFromChild(Activity child) { 3394 return onNavigateUp(); 3395 } 3396 3397 /** 3398 * Define the synthetic task stack that will be generated during Up navigation from 3399 * a different task. 3400 * 3401 * <p>The default implementation of this method adds the parent chain of this activity 3402 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3403 * may choose to override this method to construct the desired task stack in a different 3404 * way.</p> 3405 * 3406 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3407 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3408 * returned by {@link #getParentActivityIntent()}.</p> 3409 * 3410 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3411 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3412 * 3413 * @param builder An empty TaskStackBuilder - the application should add intents representing 3414 * the desired task stack 3415 */ 3416 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3417 builder.addParentStack(this); 3418 } 3419 3420 /** 3421 * Prepare the synthetic task stack that will be generated during Up navigation 3422 * from a different task. 3423 * 3424 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3425 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3426 * If any extra data should be added to these intents before launching the new task, 3427 * the application should override this method and add that data here.</p> 3428 * 3429 * @param builder A TaskStackBuilder that has been populated with Intents by 3430 * onCreateNavigateUpTaskStack. 3431 */ 3432 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3433 } 3434 3435 /** 3436 * This hook is called whenever the options menu is being closed (either by the user canceling 3437 * the menu with the back/menu button, or when an item is selected). 3438 * 3439 * @param menu The options menu as last shown or first initialized by 3440 * onCreateOptionsMenu(). 3441 */ 3442 public void onOptionsMenuClosed(Menu menu) { 3443 if (mParent != null) { 3444 mParent.onOptionsMenuClosed(menu); 3445 } 3446 } 3447 3448 /** 3449 * Programmatically opens the options menu. If the options menu is already 3450 * open, this method does nothing. 3451 */ 3452 public void openOptionsMenu() { 3453 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3454 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3455 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3456 } 3457 } 3458 3459 /** 3460 * Progammatically closes the options menu. If the options menu is already 3461 * closed, this method does nothing. 3462 */ 3463 public void closeOptionsMenu() { 3464 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL)) { 3465 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3466 } 3467 } 3468 3469 /** 3470 * Called when a context menu for the {@code view} is about to be shown. 3471 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3472 * time the context menu is about to be shown and should be populated for 3473 * the view (or item inside the view for {@link AdapterView} subclasses, 3474 * this can be found in the {@code menuInfo})). 3475 * <p> 3476 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3477 * item has been selected. 3478 * <p> 3479 * It is not safe to hold onto the context menu after this method returns. 3480 * 3481 */ 3482 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3483 } 3484 3485 /** 3486 * Registers a context menu to be shown for the given view (multiple views 3487 * can show the context menu). This method will set the 3488 * {@link OnCreateContextMenuListener} on the view to this activity, so 3489 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3490 * called when it is time to show the context menu. 3491 * 3492 * @see #unregisterForContextMenu(View) 3493 * @param view The view that should show a context menu. 3494 */ 3495 public void registerForContextMenu(View view) { 3496 view.setOnCreateContextMenuListener(this); 3497 } 3498 3499 /** 3500 * Prevents a context menu to be shown for the given view. This method will remove the 3501 * {@link OnCreateContextMenuListener} on the view. 3502 * 3503 * @see #registerForContextMenu(View) 3504 * @param view The view that should stop showing a context menu. 3505 */ 3506 public void unregisterForContextMenu(View view) { 3507 view.setOnCreateContextMenuListener(null); 3508 } 3509 3510 /** 3511 * Programmatically opens the context menu for a particular {@code view}. 3512 * The {@code view} should have been added via 3513 * {@link #registerForContextMenu(View)}. 3514 * 3515 * @param view The view to show the context menu for. 3516 */ 3517 public void openContextMenu(View view) { 3518 view.showContextMenu(); 3519 } 3520 3521 /** 3522 * Programmatically closes the most recently opened context menu, if showing. 3523 */ 3524 public void closeContextMenu() { 3525 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3526 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3527 } 3528 } 3529 3530 /** 3531 * This hook is called whenever an item in a context menu is selected. The 3532 * default implementation simply returns false to have the normal processing 3533 * happen (calling the item's Runnable or sending a message to its Handler 3534 * as appropriate). You can use this method for any items for which you 3535 * would like to do processing without those other facilities. 3536 * <p> 3537 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3538 * View that added this menu item. 3539 * <p> 3540 * Derived classes should call through to the base class for it to perform 3541 * the default menu handling. 3542 * 3543 * @param item The context menu item that was selected. 3544 * @return boolean Return false to allow normal context menu processing to 3545 * proceed, true to consume it here. 3546 */ 3547 public boolean onContextItemSelected(MenuItem item) { 3548 if (mParent != null) { 3549 return mParent.onContextItemSelected(item); 3550 } 3551 return false; 3552 } 3553 3554 /** 3555 * This hook is called whenever the context menu is being closed (either by 3556 * the user canceling the menu with the back/menu button, or when an item is 3557 * selected). 3558 * 3559 * @param menu The context menu that is being closed. 3560 */ 3561 public void onContextMenuClosed(Menu menu) { 3562 if (mParent != null) { 3563 mParent.onContextMenuClosed(menu); 3564 } 3565 } 3566 3567 /** 3568 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3569 */ 3570 @Deprecated 3571 protected Dialog onCreateDialog(int id) { 3572 return null; 3573 } 3574 3575 /** 3576 * Callback for creating dialogs that are managed (saved and restored) for you 3577 * by the activity. The default implementation calls through to 3578 * {@link #onCreateDialog(int)} for compatibility. 3579 * 3580 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3581 * or later, consider instead using a {@link DialogFragment} instead.</em> 3582 * 3583 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3584 * this method the first time, and hang onto it thereafter. Any dialog 3585 * that is created by this method will automatically be saved and restored 3586 * for you, including whether it is showing. 3587 * 3588 * <p>If you would like the activity to manage saving and restoring dialogs 3589 * for you, you should override this method and handle any ids that are 3590 * passed to {@link #showDialog}. 3591 * 3592 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3593 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3594 * 3595 * @param id The id of the dialog. 3596 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3597 * @return The dialog. If you return null, the dialog will not be created. 3598 * 3599 * @see #onPrepareDialog(int, Dialog, Bundle) 3600 * @see #showDialog(int, Bundle) 3601 * @see #dismissDialog(int) 3602 * @see #removeDialog(int) 3603 * 3604 * @deprecated Use the new {@link DialogFragment} class with 3605 * {@link FragmentManager} instead; this is also 3606 * available on older platforms through the Android compatibility package. 3607 */ 3608 @Nullable 3609 @Deprecated 3610 protected Dialog onCreateDialog(int id, Bundle args) { 3611 return onCreateDialog(id); 3612 } 3613 3614 /** 3615 * @deprecated Old no-arguments version of 3616 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3617 */ 3618 @Deprecated 3619 protected void onPrepareDialog(int id, Dialog dialog) { 3620 dialog.setOwnerActivity(this); 3621 } 3622 3623 /** 3624 * Provides an opportunity to prepare a managed dialog before it is being 3625 * shown. The default implementation calls through to 3626 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3627 * 3628 * <p> 3629 * Override this if you need to update a managed dialog based on the state 3630 * of the application each time it is shown. For example, a time picker 3631 * dialog might want to be updated with the current time. You should call 3632 * through to the superclass's implementation. The default implementation 3633 * will set this Activity as the owner activity on the Dialog. 3634 * 3635 * @param id The id of the managed dialog. 3636 * @param dialog The dialog. 3637 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3638 * @see #onCreateDialog(int, Bundle) 3639 * @see #showDialog(int) 3640 * @see #dismissDialog(int) 3641 * @see #removeDialog(int) 3642 * 3643 * @deprecated Use the new {@link DialogFragment} class with 3644 * {@link FragmentManager} instead; this is also 3645 * available on older platforms through the Android compatibility package. 3646 */ 3647 @Deprecated 3648 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3649 onPrepareDialog(id, dialog); 3650 } 3651 3652 /** 3653 * Simple version of {@link #showDialog(int, Bundle)} that does not 3654 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3655 * with null arguments. 3656 * 3657 * @deprecated Use the new {@link DialogFragment} class with 3658 * {@link FragmentManager} instead; this is also 3659 * available on older platforms through the Android compatibility package. 3660 */ 3661 @Deprecated 3662 public final void showDialog(int id) { 3663 showDialog(id, null); 3664 } 3665 3666 /** 3667 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3668 * will be made with the same id the first time this is called for a given 3669 * id. From thereafter, the dialog will be automatically saved and restored. 3670 * 3671 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3672 * or later, consider instead using a {@link DialogFragment} instead.</em> 3673 * 3674 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3675 * be made to provide an opportunity to do any timely preparation. 3676 * 3677 * @param id The id of the managed dialog. 3678 * @param args Arguments to pass through to the dialog. These will be saved 3679 * and restored for you. Note that if the dialog is already created, 3680 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3681 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3682 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3683 * @return Returns true if the Dialog was created; false is returned if 3684 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3685 * 3686 * @see Dialog 3687 * @see #onCreateDialog(int, Bundle) 3688 * @see #onPrepareDialog(int, Dialog, Bundle) 3689 * @see #dismissDialog(int) 3690 * @see #removeDialog(int) 3691 * 3692 * @deprecated Use the new {@link DialogFragment} class with 3693 * {@link FragmentManager} instead; this is also 3694 * available on older platforms through the Android compatibility package. 3695 */ 3696 @Nullable 3697 @Deprecated 3698 public final boolean showDialog(int id, Bundle args) { 3699 if (mManagedDialogs == null) { 3700 mManagedDialogs = new SparseArray<ManagedDialog>(); 3701 } 3702 ManagedDialog md = mManagedDialogs.get(id); 3703 if (md == null) { 3704 md = new ManagedDialog(); 3705 md.mDialog = createDialog(id, null, args); 3706 if (md.mDialog == null) { 3707 return false; 3708 } 3709 mManagedDialogs.put(id, md); 3710 } 3711 3712 md.mArgs = args; 3713 onPrepareDialog(id, md.mDialog, args); 3714 md.mDialog.show(); 3715 return true; 3716 } 3717 3718 /** 3719 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3720 * 3721 * @param id The id of the managed dialog. 3722 * 3723 * @throws IllegalArgumentException if the id was not previously shown via 3724 * {@link #showDialog(int)}. 3725 * 3726 * @see #onCreateDialog(int, Bundle) 3727 * @see #onPrepareDialog(int, Dialog, Bundle) 3728 * @see #showDialog(int) 3729 * @see #removeDialog(int) 3730 * 3731 * @deprecated Use the new {@link DialogFragment} class with 3732 * {@link FragmentManager} instead; this is also 3733 * available on older platforms through the Android compatibility package. 3734 */ 3735 @Deprecated 3736 public final void dismissDialog(int id) { 3737 if (mManagedDialogs == null) { 3738 throw missingDialog(id); 3739 } 3740 3741 final ManagedDialog md = mManagedDialogs.get(id); 3742 if (md == null) { 3743 throw missingDialog(id); 3744 } 3745 md.mDialog.dismiss(); 3746 } 3747 3748 /** 3749 * Creates an exception to throw if a user passed in a dialog id that is 3750 * unexpected. 3751 */ 3752 private IllegalArgumentException missingDialog(int id) { 3753 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3754 + "shown via Activity#showDialog"); 3755 } 3756 3757 /** 3758 * Removes any internal references to a dialog managed by this Activity. 3759 * If the dialog is showing, it will dismiss it as part of the clean up. 3760 * 3761 * <p>This can be useful if you know that you will never show a dialog again and 3762 * want to avoid the overhead of saving and restoring it in the future. 3763 * 3764 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3765 * will not throw an exception if you try to remove an ID that does not 3766 * currently have an associated dialog.</p> 3767 * 3768 * @param id The id of the managed dialog. 3769 * 3770 * @see #onCreateDialog(int, Bundle) 3771 * @see #onPrepareDialog(int, Dialog, Bundle) 3772 * @see #showDialog(int) 3773 * @see #dismissDialog(int) 3774 * 3775 * @deprecated Use the new {@link DialogFragment} class with 3776 * {@link FragmentManager} instead; this is also 3777 * available on older platforms through the Android compatibility package. 3778 */ 3779 @Deprecated 3780 public final void removeDialog(int id) { 3781 if (mManagedDialogs != null) { 3782 final ManagedDialog md = mManagedDialogs.get(id); 3783 if (md != null) { 3784 md.mDialog.dismiss(); 3785 mManagedDialogs.remove(id); 3786 } 3787 } 3788 } 3789 3790 /** 3791 * This hook is called when the user signals the desire to start a search. 3792 * 3793 * <p>You can use this function as a simple way to launch the search UI, in response to a 3794 * menu item, search button, or other widgets within your activity. Unless overidden, 3795 * calling this function is the same as calling 3796 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3797 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3798 * 3799 * <p>You can override this function to force global search, e.g. in response to a dedicated 3800 * search key, or to block search entirely (by simply returning false). 3801 * 3802 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 3803 * implementation changes to simply return false and you must supply your own custom 3804 * implementation if you want to support search.</p> 3805 * 3806 * @param searchEvent The {@link SearchEvent} that signaled this search. 3807 * @return Returns {@code true} if search launched, and {@code false} if the activity does 3808 * not respond to search. The default implementation always returns {@code true}, except 3809 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 3810 * 3811 * @see android.app.SearchManager 3812 */ 3813 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 3814 mSearchEvent = searchEvent; 3815 boolean result = onSearchRequested(); 3816 mSearchEvent = null; 3817 return result; 3818 } 3819 3820 /** 3821 * @see #onSearchRequested(SearchEvent) 3822 */ 3823 public boolean onSearchRequested() { 3824 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 3825 != Configuration.UI_MODE_TYPE_TELEVISION) { 3826 startSearch(null, false, null, false); 3827 return true; 3828 } else { 3829 return false; 3830 } 3831 } 3832 3833 /** 3834 * During the onSearchRequested() callbacks, this function will return the 3835 * {@link SearchEvent} that triggered the callback, if it exists. 3836 * 3837 * @return SearchEvent The SearchEvent that triggered the {@link 3838 * #onSearchRequested} callback. 3839 */ 3840 public final SearchEvent getSearchEvent() { 3841 return mSearchEvent; 3842 } 3843 3844 /** 3845 * This hook is called to launch the search UI. 3846 * 3847 * <p>It is typically called from onSearchRequested(), either directly from 3848 * Activity.onSearchRequested() or from an overridden version in any given 3849 * Activity. If your goal is simply to activate search, it is preferred to call 3850 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3851 * is to inject specific data such as context data, it is preferred to <i>override</i> 3852 * onSearchRequested(), so that any callers to it will benefit from the override. 3853 * 3854 * @param initialQuery Any non-null non-empty string will be inserted as 3855 * pre-entered text in the search query box. 3856 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3857 * any further typing will replace it. This is useful for cases where an entire pre-formed 3858 * query is being inserted. If false, the selection point will be placed at the end of the 3859 * inserted query. This is useful when the inserted query is text that the user entered, 3860 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3861 * if initialQuery is a non-empty string.</i> 3862 * @param appSearchData An application can insert application-specific 3863 * context here, in order to improve quality or specificity of its own 3864 * searches. This data will be returned with SEARCH intent(s). Null if 3865 * no extra data is required. 3866 * @param globalSearch If false, this will only launch the search that has been specifically 3867 * defined by the application (which is usually defined as a local search). If no default 3868 * search is defined in the current application or activity, global search will be launched. 3869 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3870 * 3871 * @see android.app.SearchManager 3872 * @see #onSearchRequested 3873 */ 3874 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3875 @Nullable Bundle appSearchData, boolean globalSearch) { 3876 ensureSearchManager(); 3877 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3878 appSearchData, globalSearch); 3879 } 3880 3881 /** 3882 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3883 * the search dialog. Made available for testing purposes. 3884 * 3885 * @param query The query to trigger. If empty, the request will be ignored. 3886 * @param appSearchData An application can insert application-specific 3887 * context here, in order to improve quality or specificity of its own 3888 * searches. This data will be returned with SEARCH intent(s). Null if 3889 * no extra data is required. 3890 */ 3891 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3892 ensureSearchManager(); 3893 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3894 } 3895 3896 /** 3897 * Request that key events come to this activity. Use this if your 3898 * activity has no views with focus, but the activity still wants 3899 * a chance to process key events. 3900 * 3901 * @see android.view.Window#takeKeyEvents 3902 */ 3903 public void takeKeyEvents(boolean get) { 3904 getWindow().takeKeyEvents(get); 3905 } 3906 3907 /** 3908 * Enable extended window features. This is a convenience for calling 3909 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3910 * 3911 * @param featureId The desired feature as defined in 3912 * {@link android.view.Window}. 3913 * @return Returns true if the requested feature is supported and now 3914 * enabled. 3915 * 3916 * @see android.view.Window#requestFeature 3917 */ 3918 public final boolean requestWindowFeature(int featureId) { 3919 return getWindow().requestFeature(featureId); 3920 } 3921 3922 /** 3923 * Convenience for calling 3924 * {@link android.view.Window#setFeatureDrawableResource}. 3925 */ 3926 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 3927 getWindow().setFeatureDrawableResource(featureId, resId); 3928 } 3929 3930 /** 3931 * Convenience for calling 3932 * {@link android.view.Window#setFeatureDrawableUri}. 3933 */ 3934 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3935 getWindow().setFeatureDrawableUri(featureId, uri); 3936 } 3937 3938 /** 3939 * Convenience for calling 3940 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3941 */ 3942 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3943 getWindow().setFeatureDrawable(featureId, drawable); 3944 } 3945 3946 /** 3947 * Convenience for calling 3948 * {@link android.view.Window#setFeatureDrawableAlpha}. 3949 */ 3950 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3951 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3952 } 3953 3954 /** 3955 * Convenience for calling 3956 * {@link android.view.Window#getLayoutInflater}. 3957 */ 3958 @NonNull 3959 public LayoutInflater getLayoutInflater() { 3960 return getWindow().getLayoutInflater(); 3961 } 3962 3963 /** 3964 * Returns a {@link MenuInflater} with this context. 3965 */ 3966 @NonNull 3967 public MenuInflater getMenuInflater() { 3968 // Make sure that action views can get an appropriate theme. 3969 if (mMenuInflater == null) { 3970 initWindowDecorActionBar(); 3971 if (mActionBar != null) { 3972 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3973 } else { 3974 mMenuInflater = new MenuInflater(this); 3975 } 3976 } 3977 return mMenuInflater; 3978 } 3979 3980 @Override 3981 public void setTheme(int resid) { 3982 super.setTheme(resid); 3983 mWindow.setTheme(resid); 3984 } 3985 3986 @Override 3987 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 3988 boolean first) { 3989 if (mParent == null) { 3990 super.onApplyThemeResource(theme, resid, first); 3991 } else { 3992 try { 3993 theme.setTo(mParent.getTheme()); 3994 } catch (Exception e) { 3995 // Empty 3996 } 3997 theme.applyStyle(resid, false); 3998 } 3999 4000 // Get the primary color and update the TaskDescription for this activity 4001 TypedArray a = theme.obtainStyledAttributes( 4002 com.android.internal.R.styleable.ActivityTaskDescription); 4003 if (mTaskDescription.getPrimaryColor() == 0) { 4004 int colorPrimary = a.getColor( 4005 com.android.internal.R.styleable.ActivityTaskDescription_colorPrimary, 0); 4006 if (colorPrimary != 0 && Color.alpha(colorPrimary) == 0xFF) { 4007 mTaskDescription.setPrimaryColor(colorPrimary); 4008 } 4009 } 4010 // For dev-preview only. 4011 if (mTaskDescription.getBackgroundColor() == 0) { 4012 int colorBackground = a.getColor( 4013 com.android.internal.R.styleable.ActivityTaskDescription_colorBackground, 0); 4014 if (colorBackground != 0 && Color.alpha(colorBackground) == 0xFF) { 4015 mTaskDescription.setBackgroundColor(colorBackground); 4016 } 4017 } 4018 a.recycle(); 4019 setTaskDescription(mTaskDescription); 4020 } 4021 4022 /** 4023 * Requests permissions to be granted to this application. These permissions 4024 * must be requested in your manifest, they should not be granted to your app, 4025 * and they should have protection level {@link android.content.pm.PermissionInfo 4026 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 4027 * the platform or a third-party app. 4028 * <p> 4029 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 4030 * are granted at install time if requested in the manifest. Signature permissions 4031 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 4032 * install time if requested in the manifest and the signature of your app matches 4033 * the signature of the app declaring the permissions. 4034 * </p> 4035 * <p> 4036 * If your app does not have the requested permissions the user will be presented 4037 * with UI for accepting them. After the user has accepted or rejected the 4038 * requested permissions you will receive a callback on {@link 4039 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4040 * permissions were granted or not. 4041 * </p> 4042 * <p> 4043 * Note that requesting a permission does not guarantee it will be granted and 4044 * your app should be able to run without having this permission. 4045 * </p> 4046 * <p> 4047 * This method may start an activity allowing the user to choose which permissions 4048 * to grant and which to reject. Hence, you should be prepared that your activity 4049 * may be paused and resumed. Further, granting some permissions may require 4050 * a restart of you application. In such a case, the system will recreate the 4051 * activity stack before delivering the result to {@link 4052 * #onRequestPermissionsResult(int, String[], int[])}. 4053 * </p> 4054 * <p> 4055 * When checking whether you have a permission you should use {@link 4056 * #checkSelfPermission(String)}. 4057 * </p> 4058 * <p> 4059 * Calling this API for permissions already granted to your app would show UI 4060 * to the user to decide whether the app can still hold these permissions. This 4061 * can be useful if the way your app uses data guarded by the permissions 4062 * changes significantly. 4063 * </p> 4064 * <p> 4065 * You cannot request a permission if your activity sets {@link 4066 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4067 * <code>true</code> because in this case the activity would not receive 4068 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4069 * </p> 4070 * <p> 4071 * A sample permissions request looks like this: 4072 * </p> 4073 * <code><pre><p> 4074 * private void showContacts() { 4075 * if (checkSelfPermission(Manifest.permission.READ_CONTACTS) 4076 * != PackageManager.PERMISSION_GRANTED) { 4077 * requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, 4078 * PERMISSIONS_REQUEST_READ_CONTACTS); 4079 * } else { 4080 * doShowContacts(); 4081 * } 4082 * } 4083 * 4084 * {@literal @}Override 4085 * public void onRequestPermissionsResult(int requestCode, String[] permissions, 4086 * int[] grantResults) { 4087 * if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS 4088 * && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 4089 * showContacts(); 4090 * } 4091 * } 4092 * </code></pre></p> 4093 * 4094 * @param permissions The requested permissions. Must me non-null and not empty. 4095 * @param requestCode Application specific request code to match with a result 4096 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4097 * Should be >= 0. 4098 * 4099 * @see #onRequestPermissionsResult(int, String[], int[]) 4100 * @see #checkSelfPermission(String) 4101 * @see #shouldShowRequestPermissionRationale(String) 4102 */ 4103 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4104 if (mHasCurrentPermissionsRequest) { 4105 Log.w(TAG, "Can reqeust only one set of permissions at a time"); 4106 // Dispatch the callback with empty arrays which means a cancellation. 4107 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4108 return; 4109 } 4110 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4111 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4112 mHasCurrentPermissionsRequest = true; 4113 } 4114 4115 /** 4116 * Callback for the result from requesting permissions. This method 4117 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4118 * <p> 4119 * <strong>Note:</strong> It is possible that the permissions request interaction 4120 * with the user is interrupted. In this case you will receive empty permissions 4121 * and results arrays which should be treated as a cancellation. 4122 * </p> 4123 * 4124 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4125 * @param permissions The requested permissions. Never null. 4126 * @param grantResults The grant results for the corresponding permissions 4127 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4128 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4129 * 4130 * @see #requestPermissions(String[], int) 4131 */ 4132 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4133 @NonNull int[] grantResults) { 4134 /* callback - no nothing */ 4135 } 4136 4137 /** 4138 * Gets whether you should show UI with rationale for requesting a permission. 4139 * You should do this only if you do not have the permission and the context in 4140 * which the permission is requested does not clearly communicate to the user 4141 * what would be the benefit from granting this permission. 4142 * <p> 4143 * For example, if you write a camera app, requesting the camera permission 4144 * would be expected by the user and no rationale for why it is requested is 4145 * needed. If however, the app needs location for tagging photos then a non-tech 4146 * savvy user may wonder how location is related to taking photos. In this case 4147 * you may choose to show UI with rationale of requesting this permission. 4148 * </p> 4149 * 4150 * @param permission A permission your app wants to request. 4151 * @return Whether you can show permission rationale UI. 4152 * 4153 * @see #checkSelfPermission(String) 4154 * @see #requestPermissions(String[], int) 4155 * @see #onRequestPermissionsResult(int, String[], int[]) 4156 */ 4157 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4158 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4159 } 4160 4161 /** 4162 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4163 * with no options. 4164 * 4165 * @param intent The intent to start. 4166 * @param requestCode If >= 0, this code will be returned in 4167 * onActivityResult() when the activity exits. 4168 * 4169 * @throws android.content.ActivityNotFoundException 4170 * 4171 * @see #startActivity 4172 */ 4173 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4174 startActivityForResult(intent, requestCode, null); 4175 } 4176 4177 /** 4178 * Launch an activity for which you would like a result when it finished. 4179 * When this activity exits, your 4180 * onActivityResult() method will be called with the given requestCode. 4181 * Using a negative requestCode is the same as calling 4182 * {@link #startActivity} (the activity is not launched as a sub-activity). 4183 * 4184 * <p>Note that this method should only be used with Intent protocols 4185 * that are defined to return a result. In other protocols (such as 4186 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4187 * not get the result when you expect. For example, if the activity you 4188 * are launching uses the singleTask launch mode, it will not run in your 4189 * task and thus you will immediately receive a cancel result. 4190 * 4191 * <p>As a special case, if you call startActivityForResult() with a requestCode 4192 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4193 * activity, then your window will not be displayed until a result is 4194 * returned back from the started activity. This is to avoid visible 4195 * flickering when redirecting to another activity. 4196 * 4197 * <p>This method throws {@link android.content.ActivityNotFoundException} 4198 * if there was no Activity found to run the given Intent. 4199 * 4200 * @param intent The intent to start. 4201 * @param requestCode If >= 0, this code will be returned in 4202 * onActivityResult() when the activity exits. 4203 * @param options Additional options for how the Activity should be started. 4204 * See {@link android.content.Context#startActivity(Intent, Bundle) 4205 * Context.startActivity(Intent, Bundle)} for more details. 4206 * 4207 * @throws android.content.ActivityNotFoundException 4208 * 4209 * @see #startActivity 4210 */ 4211 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4212 @Nullable Bundle options) { 4213 if (mParent == null) { 4214 Instrumentation.ActivityResult ar = 4215 mInstrumentation.execStartActivity( 4216 this, mMainThread.getApplicationThread(), mToken, this, 4217 intent, requestCode, options); 4218 if (ar != null) { 4219 mMainThread.sendActivityResult( 4220 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4221 ar.getResultData()); 4222 } 4223 if (requestCode >= 0) { 4224 // If this start is requesting a result, we can avoid making 4225 // the activity visible until the result is received. Setting 4226 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4227 // activity hidden during this time, to avoid flickering. 4228 // This can only be done when a result is requested because 4229 // that guarantees we will get information back when the 4230 // activity is finished, no matter what happens to it. 4231 mStartedActivity = true; 4232 } 4233 4234 cancelInputsAndStartExitTransition(options); 4235 // TODO Consider clearing/flushing other event sources and events for child windows. 4236 } else { 4237 if (options != null) { 4238 mParent.startActivityFromChild(this, intent, requestCode, options); 4239 } else { 4240 // Note we want to go through this method for compatibility with 4241 // existing applications that may have overridden it. 4242 mParent.startActivityFromChild(this, intent, requestCode); 4243 } 4244 } 4245 } 4246 4247 /** 4248 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4249 * 4250 * @param options The ActivityOptions bundle used to start an Activity. 4251 */ 4252 private void cancelInputsAndStartExitTransition(Bundle options) { 4253 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4254 if (decor != null) { 4255 decor.cancelPendingInputEvents(); 4256 } 4257 if (options != null && !isTopOfTask()) { 4258 mActivityTransitionState.startExitOutTransition(this, options); 4259 } 4260 } 4261 4262 /** 4263 * @hide Implement to provide correct calling token. 4264 */ 4265 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4266 startActivityForResultAsUser(intent, requestCode, null, user); 4267 } 4268 4269 /** 4270 * @hide Implement to provide correct calling token. 4271 */ 4272 public void startActivityForResultAsUser(Intent intent, int requestCode, 4273 @Nullable Bundle options, UserHandle user) { 4274 if (mParent != null) { 4275 throw new RuntimeException("Can't be called from a child"); 4276 } 4277 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4278 this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, 4279 options, user); 4280 if (ar != null) { 4281 mMainThread.sendActivityResult( 4282 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4283 } 4284 if (requestCode >= 0) { 4285 // If this start is requesting a result, we can avoid making 4286 // the activity visible until the result is received. Setting 4287 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4288 // activity hidden during this time, to avoid flickering. 4289 // This can only be done when a result is requested because 4290 // that guarantees we will get information back when the 4291 // activity is finished, no matter what happens to it. 4292 mStartedActivity = true; 4293 } 4294 4295 cancelInputsAndStartExitTransition(options); 4296 } 4297 4298 /** 4299 * @hide Implement to provide correct calling token. 4300 */ 4301 public void startActivityAsUser(Intent intent, UserHandle user) { 4302 startActivityAsUser(intent, null, user); 4303 } 4304 4305 /** 4306 * @hide Implement to provide correct calling token. 4307 */ 4308 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4309 if (mParent != null) { 4310 throw new RuntimeException("Can't be called from a child"); 4311 } 4312 Instrumentation.ActivityResult ar = 4313 mInstrumentation.execStartActivity( 4314 this, mMainThread.getApplicationThread(), mToken, this, 4315 intent, -1, options, user); 4316 if (ar != null) { 4317 mMainThread.sendActivityResult( 4318 mToken, mEmbeddedID, -1, ar.getResultCode(), 4319 ar.getResultData()); 4320 } 4321 cancelInputsAndStartExitTransition(options); 4322 } 4323 4324 /** 4325 * Start a new activity as if it was started by the activity that started our 4326 * current activity. This is for the resolver and chooser activities, which operate 4327 * as intermediaries that dispatch their intent to the target the user selects -- to 4328 * do this, they must perform all security checks including permission grants as if 4329 * their launch had come from the original activity. 4330 * @param intent The Intent to start. 4331 * @param options ActivityOptions or null. 4332 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4333 * caller it is doing the start is, is actually allowed to start the target activity. 4334 * If you set this to true, you must set an explicit component in the Intent and do any 4335 * appropriate security checks yourself. 4336 * @param userId The user the new activity should run as. 4337 * @hide 4338 */ 4339 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4340 boolean ignoreTargetSecurity, int userId) { 4341 if (mParent != null) { 4342 throw new RuntimeException("Can't be called from a child"); 4343 } 4344 Instrumentation.ActivityResult ar = 4345 mInstrumentation.execStartActivityAsCaller( 4346 this, mMainThread.getApplicationThread(), mToken, this, 4347 intent, -1, options, ignoreTargetSecurity, userId); 4348 if (ar != null) { 4349 mMainThread.sendActivityResult( 4350 mToken, mEmbeddedID, -1, ar.getResultCode(), 4351 ar.getResultData()); 4352 } 4353 cancelInputsAndStartExitTransition(options); 4354 } 4355 4356 /** 4357 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4358 * Intent, int, int, int, Bundle)} with no options. 4359 * 4360 * @param intent The IntentSender to launch. 4361 * @param requestCode If >= 0, this code will be returned in 4362 * onActivityResult() when the activity exits. 4363 * @param fillInIntent If non-null, this will be provided as the 4364 * intent parameter to {@link IntentSender#sendIntent}. 4365 * @param flagsMask Intent flags in the original IntentSender that you 4366 * would like to change. 4367 * @param flagsValues Desired values for any bits set in 4368 * <var>flagsMask</var> 4369 * @param extraFlags Always set to 0. 4370 */ 4371 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4372 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4373 throws IntentSender.SendIntentException { 4374 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4375 flagsValues, extraFlags, null); 4376 } 4377 4378 /** 4379 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4380 * to use a IntentSender to describe the activity to be started. If 4381 * the IntentSender is for an activity, that activity will be started 4382 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4383 * here; otherwise, its associated action will be executed (such as 4384 * sending a broadcast) as if you had called 4385 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4386 * 4387 * @param intent The IntentSender to launch. 4388 * @param requestCode If >= 0, this code will be returned in 4389 * onActivityResult() when the activity exits. 4390 * @param fillInIntent If non-null, this will be provided as the 4391 * intent parameter to {@link IntentSender#sendIntent}. 4392 * @param flagsMask Intent flags in the original IntentSender that you 4393 * would like to change. 4394 * @param flagsValues Desired values for any bits set in 4395 * <var>flagsMask</var> 4396 * @param extraFlags Always set to 0. 4397 * @param options Additional options for how the Activity should be started. 4398 * See {@link android.content.Context#startActivity(Intent, Bundle) 4399 * Context.startActivity(Intent, Bundle)} for more details. If options 4400 * have also been supplied by the IntentSender, options given here will 4401 * override any that conflict with those given by the IntentSender. 4402 */ 4403 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4404 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4405 Bundle options) throws IntentSender.SendIntentException { 4406 if (mParent == null) { 4407 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4408 flagsMask, flagsValues, this, options); 4409 } else if (options != null) { 4410 mParent.startIntentSenderFromChild(this, intent, requestCode, 4411 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4412 } else { 4413 // Note we want to go through this call for compatibility with 4414 // existing applications that may have overridden the method. 4415 mParent.startIntentSenderFromChild(this, intent, requestCode, 4416 fillInIntent, flagsMask, flagsValues, extraFlags); 4417 } 4418 } 4419 4420 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 4421 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 4422 Bundle options) 4423 throws IntentSender.SendIntentException { 4424 try { 4425 String resolvedType = null; 4426 if (fillInIntent != null) { 4427 fillInIntent.migrateExtraStreamToClipData(); 4428 fillInIntent.prepareToLeaveProcess(this); 4429 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4430 } 4431 int result = ActivityManagerNative.getDefault() 4432 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 4433 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 4434 requestCode, flagsMask, flagsValues, options); 4435 if (result == ActivityManager.START_CANCELED) { 4436 throw new IntentSender.SendIntentException(); 4437 } 4438 Instrumentation.checkStartActivityResult(result, null); 4439 } catch (RemoteException e) { 4440 } 4441 if (requestCode >= 0) { 4442 // If this start is requesting a result, we can avoid making 4443 // the activity visible until the result is received. Setting 4444 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4445 // activity hidden during this time, to avoid flickering. 4446 // This can only be done when a result is requested because 4447 // that guarantees we will get information back when the 4448 // activity is finished, no matter what happens to it. 4449 mStartedActivity = true; 4450 } 4451 } 4452 4453 /** 4454 * Same as {@link #startActivity(Intent, Bundle)} with no options 4455 * specified. 4456 * 4457 * @param intent The intent to start. 4458 * 4459 * @throws android.content.ActivityNotFoundException 4460 * 4461 * @see {@link #startActivity(Intent, Bundle)} 4462 * @see #startActivityForResult 4463 */ 4464 @Override 4465 public void startActivity(Intent intent) { 4466 this.startActivity(intent, null); 4467 } 4468 4469 /** 4470 * Launch a new activity. You will not receive any information about when 4471 * the activity exits. This implementation overrides the base version, 4472 * providing information about 4473 * the activity performing the launch. Because of this additional 4474 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4475 * required; if not specified, the new activity will be added to the 4476 * task of the caller. 4477 * 4478 * <p>This method throws {@link android.content.ActivityNotFoundException} 4479 * if there was no Activity found to run the given Intent. 4480 * 4481 * @param intent The intent to start. 4482 * @param options Additional options for how the Activity should be started. 4483 * See {@link android.content.Context#startActivity(Intent, Bundle) 4484 * Context.startActivity(Intent, Bundle)} for more details. 4485 * 4486 * @throws android.content.ActivityNotFoundException 4487 * 4488 * @see {@link #startActivity(Intent)} 4489 * @see #startActivityForResult 4490 */ 4491 @Override 4492 public void startActivity(Intent intent, @Nullable Bundle options) { 4493 if (options != null) { 4494 startActivityForResult(intent, -1, options); 4495 } else { 4496 // Note we want to go through this call for compatibility with 4497 // applications that may have overridden the method. 4498 startActivityForResult(intent, -1); 4499 } 4500 } 4501 4502 /** 4503 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4504 * specified. 4505 * 4506 * @param intents The intents to start. 4507 * 4508 * @throws android.content.ActivityNotFoundException 4509 * 4510 * @see {@link #startActivities(Intent[], Bundle)} 4511 * @see #startActivityForResult 4512 */ 4513 @Override 4514 public void startActivities(Intent[] intents) { 4515 startActivities(intents, null); 4516 } 4517 4518 /** 4519 * Launch a new activity. You will not receive any information about when 4520 * the activity exits. This implementation overrides the base version, 4521 * providing information about 4522 * the activity performing the launch. Because of this additional 4523 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4524 * required; if not specified, the new activity will be added to the 4525 * task of the caller. 4526 * 4527 * <p>This method throws {@link android.content.ActivityNotFoundException} 4528 * if there was no Activity found to run the given Intent. 4529 * 4530 * @param intents The intents to start. 4531 * @param options Additional options for how the Activity should be started. 4532 * See {@link android.content.Context#startActivity(Intent, Bundle) 4533 * Context.startActivity(Intent, Bundle)} for more details. 4534 * 4535 * @throws android.content.ActivityNotFoundException 4536 * 4537 * @see {@link #startActivities(Intent[])} 4538 * @see #startActivityForResult 4539 */ 4540 @Override 4541 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4542 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4543 mToken, this, intents, options); 4544 } 4545 4546 /** 4547 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4548 * with no options. 4549 * 4550 * @param intent The IntentSender to launch. 4551 * @param fillInIntent If non-null, this will be provided as the 4552 * intent parameter to {@link IntentSender#sendIntent}. 4553 * @param flagsMask Intent flags in the original IntentSender that you 4554 * would like to change. 4555 * @param flagsValues Desired values for any bits set in 4556 * <var>flagsMask</var> 4557 * @param extraFlags Always set to 0. 4558 */ 4559 public void startIntentSender(IntentSender intent, 4560 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4561 throws IntentSender.SendIntentException { 4562 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4563 extraFlags, null); 4564 } 4565 4566 /** 4567 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4568 * to start; see 4569 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4570 * for more information. 4571 * 4572 * @param intent The IntentSender to launch. 4573 * @param fillInIntent If non-null, this will be provided as the 4574 * intent parameter to {@link IntentSender#sendIntent}. 4575 * @param flagsMask Intent flags in the original IntentSender that you 4576 * would like to change. 4577 * @param flagsValues Desired values for any bits set in 4578 * <var>flagsMask</var> 4579 * @param extraFlags Always set to 0. 4580 * @param options Additional options for how the Activity should be started. 4581 * See {@link android.content.Context#startActivity(Intent, Bundle) 4582 * Context.startActivity(Intent, Bundle)} for more details. If options 4583 * have also been supplied by the IntentSender, options given here will 4584 * override any that conflict with those given by the IntentSender. 4585 */ 4586 public void startIntentSender(IntentSender intent, 4587 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4588 Bundle options) throws IntentSender.SendIntentException { 4589 if (options != null) { 4590 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4591 flagsValues, extraFlags, options); 4592 } else { 4593 // Note we want to go through this call for compatibility with 4594 // applications that may have overridden the method. 4595 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4596 flagsValues, extraFlags); 4597 } 4598 } 4599 4600 /** 4601 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4602 * with no options. 4603 * 4604 * @param intent The intent to start. 4605 * @param requestCode If >= 0, this code will be returned in 4606 * onActivityResult() when the activity exits, as described in 4607 * {@link #startActivityForResult}. 4608 * 4609 * @return If a new activity was launched then true is returned; otherwise 4610 * false is returned and you must handle the Intent yourself. 4611 * 4612 * @see #startActivity 4613 * @see #startActivityForResult 4614 */ 4615 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4616 int requestCode) { 4617 return startActivityIfNeeded(intent, requestCode, null); 4618 } 4619 4620 /** 4621 * A special variation to launch an activity only if a new activity 4622 * instance is needed to handle the given Intent. In other words, this is 4623 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4624 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4625 * singleTask or singleTop 4626 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4627 * and the activity 4628 * that handles <var>intent</var> is the same as your currently running 4629 * activity, then a new instance is not needed. In this case, instead of 4630 * the normal behavior of calling {@link #onNewIntent} this function will 4631 * return and you can handle the Intent yourself. 4632 * 4633 * <p>This function can only be called from a top-level activity; if it is 4634 * called from a child activity, a runtime exception will be thrown. 4635 * 4636 * @param intent The intent to start. 4637 * @param requestCode If >= 0, this code will be returned in 4638 * onActivityResult() when the activity exits, as described in 4639 * {@link #startActivityForResult}. 4640 * @param options Additional options for how the Activity should be started. 4641 * See {@link android.content.Context#startActivity(Intent, Bundle) 4642 * Context.startActivity(Intent, Bundle)} for more details. 4643 * 4644 * @return If a new activity was launched then true is returned; otherwise 4645 * false is returned and you must handle the Intent yourself. 4646 * 4647 * @see #startActivity 4648 * @see #startActivityForResult 4649 */ 4650 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4651 int requestCode, @Nullable Bundle options) { 4652 if (mParent == null) { 4653 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4654 try { 4655 Uri referrer = onProvideReferrer(); 4656 if (referrer != null) { 4657 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4658 } 4659 intent.migrateExtraStreamToClipData(); 4660 intent.prepareToLeaveProcess(this); 4661 result = ActivityManagerNative.getDefault() 4662 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4663 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4664 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4665 null, options); 4666 } catch (RemoteException e) { 4667 // Empty 4668 } 4669 4670 Instrumentation.checkStartActivityResult(result, intent); 4671 4672 if (requestCode >= 0) { 4673 // If this start is requesting a result, we can avoid making 4674 // the activity visible until the result is received. Setting 4675 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4676 // activity hidden during this time, to avoid flickering. 4677 // This can only be done when a result is requested because 4678 // that guarantees we will get information back when the 4679 // activity is finished, no matter what happens to it. 4680 mStartedActivity = true; 4681 } 4682 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4683 } 4684 4685 throw new UnsupportedOperationException( 4686 "startActivityIfNeeded can only be called from a top-level activity"); 4687 } 4688 4689 /** 4690 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4691 * no options. 4692 * 4693 * @param intent The intent to dispatch to the next activity. For 4694 * correct behavior, this must be the same as the Intent that started 4695 * your own activity; the only changes you can make are to the extras 4696 * inside of it. 4697 * 4698 * @return Returns a boolean indicating whether there was another Activity 4699 * to start: true if there was a next activity to start, false if there 4700 * wasn't. In general, if true is returned you will then want to call 4701 * finish() on yourself. 4702 */ 4703 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 4704 return startNextMatchingActivity(intent, null); 4705 } 4706 4707 /** 4708 * Special version of starting an activity, for use when you are replacing 4709 * other activity components. You can use this to hand the Intent off 4710 * to the next Activity that can handle it. You typically call this in 4711 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4712 * 4713 * @param intent The intent to dispatch to the next activity. For 4714 * correct behavior, this must be the same as the Intent that started 4715 * your own activity; the only changes you can make are to the extras 4716 * inside of it. 4717 * @param options Additional options for how the Activity should be started. 4718 * See {@link android.content.Context#startActivity(Intent, Bundle) 4719 * Context.startActivity(Intent, Bundle)} for more details. 4720 * 4721 * @return Returns a boolean indicating whether there was another Activity 4722 * to start: true if there was a next activity to start, false if there 4723 * wasn't. In general, if true is returned you will then want to call 4724 * finish() on yourself. 4725 */ 4726 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 4727 @Nullable Bundle options) { 4728 if (mParent == null) { 4729 try { 4730 intent.migrateExtraStreamToClipData(); 4731 intent.prepareToLeaveProcess(this); 4732 return ActivityManagerNative.getDefault() 4733 .startNextMatchingActivity(mToken, intent, options); 4734 } catch (RemoteException e) { 4735 // Empty 4736 } 4737 return false; 4738 } 4739 4740 throw new UnsupportedOperationException( 4741 "startNextMatchingActivity can only be called from a top-level activity"); 4742 } 4743 4744 /** 4745 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4746 * with no options. 4747 * 4748 * @param child The activity making the call. 4749 * @param intent The intent to start. 4750 * @param requestCode Reply request code. < 0 if reply is not requested. 4751 * 4752 * @throws android.content.ActivityNotFoundException 4753 * 4754 * @see #startActivity 4755 * @see #startActivityForResult 4756 */ 4757 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4758 int requestCode) { 4759 startActivityFromChild(child, intent, requestCode, null); 4760 } 4761 4762 /** 4763 * This is called when a child activity of this one calls its 4764 * {@link #startActivity} or {@link #startActivityForResult} method. 4765 * 4766 * <p>This method throws {@link android.content.ActivityNotFoundException} 4767 * if there was no Activity found to run the given Intent. 4768 * 4769 * @param child The activity making the call. 4770 * @param intent The intent to start. 4771 * @param requestCode Reply request code. < 0 if reply is not requested. 4772 * @param options Additional options for how the Activity should be started. 4773 * See {@link android.content.Context#startActivity(Intent, Bundle) 4774 * Context.startActivity(Intent, Bundle)} for more details. 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, @Nullable Bundle options) { 4783 Instrumentation.ActivityResult ar = 4784 mInstrumentation.execStartActivity( 4785 this, mMainThread.getApplicationThread(), mToken, child, 4786 intent, requestCode, options); 4787 if (ar != null) { 4788 mMainThread.sendActivityResult( 4789 mToken, child.mEmbeddedID, requestCode, 4790 ar.getResultCode(), ar.getResultData()); 4791 } 4792 cancelInputsAndStartExitTransition(options); 4793 } 4794 4795 /** 4796 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4797 * with no options. 4798 * 4799 * @param fragment The fragment making the call. 4800 * @param intent The intent to start. 4801 * @param requestCode Reply request code. < 0 if reply is not requested. 4802 * 4803 * @throws android.content.ActivityNotFoundException 4804 * 4805 * @see Fragment#startActivity 4806 * @see Fragment#startActivityForResult 4807 */ 4808 public void startActivityFromFragment(@NonNull Fragment fragment, 4809 @RequiresPermission Intent intent, int requestCode) { 4810 startActivityFromFragment(fragment, intent, requestCode, null); 4811 } 4812 4813 /** 4814 * This is called when a Fragment in this activity calls its 4815 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4816 * method. 4817 * 4818 * <p>This method throws {@link android.content.ActivityNotFoundException} 4819 * if there was no Activity found to run the given Intent. 4820 * 4821 * @param fragment The fragment making the call. 4822 * @param intent The intent to start. 4823 * @param requestCode Reply request code. < 0 if reply is not requested. 4824 * @param options Additional options for how the Activity should be started. 4825 * See {@link android.content.Context#startActivity(Intent, Bundle) 4826 * Context.startActivity(Intent, Bundle)} for more details. 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, @Nullable Bundle options) { 4835 startActivityForResult(fragment.mWho, intent, requestCode, options); 4836 } 4837 4838 /** 4839 * @hide 4840 */ 4841 @Override 4842 public void startActivityForResult( 4843 String who, Intent intent, int requestCode, @Nullable Bundle options) { 4844 Uri referrer = onProvideReferrer(); 4845 if (referrer != null) { 4846 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4847 } 4848 Instrumentation.ActivityResult ar = 4849 mInstrumentation.execStartActivity( 4850 this, mMainThread.getApplicationThread(), mToken, who, 4851 intent, requestCode, options); 4852 if (ar != null) { 4853 mMainThread.sendActivityResult( 4854 mToken, who, requestCode, 4855 ar.getResultCode(), ar.getResultData()); 4856 } 4857 cancelInputsAndStartExitTransition(options); 4858 } 4859 4860 /** 4861 * @hide 4862 */ 4863 @Override 4864 public boolean canStartActivityForResult() { 4865 return true; 4866 } 4867 4868 /** 4869 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4870 * int, Intent, int, int, int, Bundle)} with no options. 4871 */ 4872 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4873 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4874 int extraFlags) 4875 throws IntentSender.SendIntentException { 4876 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4877 flagsMask, flagsValues, extraFlags, null); 4878 } 4879 4880 /** 4881 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4882 * taking a IntentSender; see 4883 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4884 * for more information. 4885 */ 4886 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4887 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4888 int extraFlags, @Nullable Bundle options) 4889 throws IntentSender.SendIntentException { 4890 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4891 flagsMask, flagsValues, child, options); 4892 } 4893 4894 /** 4895 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4896 * or {@link #finish} to specify an explicit transition animation to 4897 * perform next. 4898 * 4899 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4900 * to using this with starting activities is to supply the desired animation 4901 * information through a {@link ActivityOptions} bundle to 4902 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4903 * you to specify a custom animation even when starting an activity from 4904 * outside the context of the current top activity. 4905 * 4906 * @param enterAnim A resource ID of the animation resource to use for 4907 * the incoming activity. Use 0 for no animation. 4908 * @param exitAnim A resource ID of the animation resource to use for 4909 * the outgoing activity. Use 0 for no animation. 4910 */ 4911 public void overridePendingTransition(int enterAnim, int exitAnim) { 4912 try { 4913 ActivityManagerNative.getDefault().overridePendingTransition( 4914 mToken, getPackageName(), enterAnim, exitAnim); 4915 } catch (RemoteException e) { 4916 } 4917 } 4918 4919 /** 4920 * Call this to set the result that your activity will return to its 4921 * caller. 4922 * 4923 * @param resultCode The result code to propagate back to the originating 4924 * activity, often RESULT_CANCELED or RESULT_OK 4925 * 4926 * @see #RESULT_CANCELED 4927 * @see #RESULT_OK 4928 * @see #RESULT_FIRST_USER 4929 * @see #setResult(int, Intent) 4930 */ 4931 public final void setResult(int resultCode) { 4932 synchronized (this) { 4933 mResultCode = resultCode; 4934 mResultData = null; 4935 } 4936 } 4937 4938 /** 4939 * Call this to set the result that your activity will return to its 4940 * caller. 4941 * 4942 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4943 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4944 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4945 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4946 * Activity receiving the result access to the specific URIs in the Intent. 4947 * Access will remain until the Activity has finished (it will remain across the hosting 4948 * process being killed and other temporary destruction) and will be added 4949 * to any existing set of URI permissions it already holds. 4950 * 4951 * @param resultCode The result code to propagate back to the originating 4952 * activity, often RESULT_CANCELED or RESULT_OK 4953 * @param data The data to propagate back to the originating activity. 4954 * 4955 * @see #RESULT_CANCELED 4956 * @see #RESULT_OK 4957 * @see #RESULT_FIRST_USER 4958 * @see #setResult(int) 4959 */ 4960 public final void setResult(int resultCode, Intent data) { 4961 synchronized (this) { 4962 mResultCode = resultCode; 4963 mResultData = data; 4964 } 4965 } 4966 4967 /** 4968 * Return information about who launched this activity. If the launching Intent 4969 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 4970 * that will be returned as-is; otherwise, if known, an 4971 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 4972 * package name that started the Intent will be returned. This may return null if no 4973 * referrer can be identified -- it is neither explicitly specified, nor is it known which 4974 * application package was involved. 4975 * 4976 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 4977 * return the referrer that submitted that new intent to the activity. Otherwise, it 4978 * always returns the referrer of the original Intent.</p> 4979 * 4980 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 4981 * referrer information, applications can spoof it.</p> 4982 */ 4983 @Nullable 4984 public Uri getReferrer() { 4985 Intent intent = getIntent(); 4986 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 4987 if (referrer != null) { 4988 return referrer; 4989 } 4990 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 4991 if (referrerName != null) { 4992 return Uri.parse(referrerName); 4993 } 4994 if (mReferrer != null) { 4995 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 4996 } 4997 return null; 4998 } 4999 5000 /** 5001 * Override to generate the desired referrer for the content currently being shown 5002 * by the app. The default implementation returns null, meaning the referrer will simply 5003 * be the android-app: of the package name of this activity. Return a non-null Uri to 5004 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 5005 */ 5006 public Uri onProvideReferrer() { 5007 return null; 5008 } 5009 5010 /** 5011 * Return the name of the package that invoked this activity. This is who 5012 * the data in {@link #setResult setResult()} will be sent to. You can 5013 * use this information to validate that the recipient is allowed to 5014 * receive the data. 5015 * 5016 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5017 * did not use the {@link #startActivityForResult} 5018 * form that includes a request code), then the calling package will be 5019 * null.</p> 5020 * 5021 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 5022 * the result from this method was unstable. If the process hosting the calling 5023 * package was no longer running, it would return null instead of the proper package 5024 * name. You can use {@link #getCallingActivity()} and retrieve the package name 5025 * from that instead.</p> 5026 * 5027 * @return The package of the activity that will receive your 5028 * reply, or null if none. 5029 */ 5030 @Nullable 5031 public String getCallingPackage() { 5032 try { 5033 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 5034 } catch (RemoteException e) { 5035 return null; 5036 } 5037 } 5038 5039 /** 5040 * Return the name of the activity that invoked this activity. This is 5041 * who the data in {@link #setResult setResult()} will be sent to. You 5042 * can use this information to validate that the recipient is allowed to 5043 * receive the data. 5044 * 5045 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5046 * did not use the {@link #startActivityForResult} 5047 * form that includes a request code), then the calling package will be 5048 * null. 5049 * 5050 * @return The ComponentName of the activity that will receive your 5051 * reply, or null if none. 5052 */ 5053 @Nullable 5054 public ComponentName getCallingActivity() { 5055 try { 5056 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 5057 } catch (RemoteException e) { 5058 return null; 5059 } 5060 } 5061 5062 /** 5063 * Control whether this activity's main window is visible. This is intended 5064 * only for the special case of an activity that is not going to show a 5065 * UI itself, but can't just finish prior to onResume() because it needs 5066 * to wait for a service binding or such. Setting this to false allows 5067 * you to prevent your UI from being shown during that time. 5068 * 5069 * <p>The default value for this is taken from the 5070 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5071 */ 5072 public void setVisible(boolean visible) { 5073 if (mVisibleFromClient != visible) { 5074 mVisibleFromClient = visible; 5075 if (mVisibleFromServer) { 5076 if (visible) makeVisible(); 5077 else mDecor.setVisibility(View.INVISIBLE); 5078 } 5079 } 5080 } 5081 5082 void makeVisible() { 5083 if (!mWindowAdded) { 5084 ViewManager wm = getWindowManager(); 5085 wm.addView(mDecor, getWindow().getAttributes()); 5086 mWindowAdded = true; 5087 } 5088 mDecor.setVisibility(View.VISIBLE); 5089 } 5090 5091 /** 5092 * Check to see whether this activity is in the process of finishing, 5093 * either because you called {@link #finish} on it or someone else 5094 * has requested that it finished. This is often used in 5095 * {@link #onPause} to determine whether the activity is simply pausing or 5096 * completely finishing. 5097 * 5098 * @return If the activity is finishing, returns true; else returns false. 5099 * 5100 * @see #finish 5101 */ 5102 public boolean isFinishing() { 5103 return mFinished; 5104 } 5105 5106 /** 5107 * Returns true if the final {@link #onDestroy()} call has been made 5108 * on the Activity, so this instance is now dead. 5109 */ 5110 public boolean isDestroyed() { 5111 return mDestroyed; 5112 } 5113 5114 /** 5115 * Check to see whether this activity is in the process of being destroyed in order to be 5116 * recreated with a new configuration. This is often used in 5117 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5118 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5119 * 5120 * @return If the activity is being torn down in order to be recreated with a new configuration, 5121 * returns true; else returns false. 5122 */ 5123 public boolean isChangingConfigurations() { 5124 return mChangingConfigurations; 5125 } 5126 5127 /** 5128 * Cause this Activity to be recreated with a new instance. This results 5129 * in essentially the same flow as when the Activity is created due to 5130 * a configuration change -- the current instance will go through its 5131 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5132 */ 5133 public void recreate() { 5134 if (mParent != null) { 5135 throw new IllegalStateException("Can only be called on top-level activity"); 5136 } 5137 if (Looper.myLooper() != mMainThread.getLooper()) { 5138 throw new IllegalStateException("Must be called from main thread"); 5139 } 5140 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, null, false, 5141 false /* preserveWindow */); 5142 } 5143 5144 /** 5145 * Finishes the current activity and specifies whether to remove the task associated with this 5146 * activity. 5147 */ 5148 private void finish(int finishTask) { 5149 if (mParent == null) { 5150 int resultCode; 5151 Intent resultData; 5152 synchronized (this) { 5153 resultCode = mResultCode; 5154 resultData = mResultData; 5155 } 5156 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5157 try { 5158 if (resultData != null) { 5159 resultData.prepareToLeaveProcess(this); 5160 } 5161 if (ActivityManagerNative.getDefault() 5162 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5163 mFinished = true; 5164 } 5165 } catch (RemoteException e) { 5166 // Empty 5167 } 5168 } else { 5169 mParent.finishFromChild(this); 5170 } 5171 } 5172 5173 /** 5174 * Call this when your activity is done and should be closed. The 5175 * ActivityResult is propagated back to whoever launched you via 5176 * onActivityResult(). 5177 */ 5178 public void finish() { 5179 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5180 } 5181 5182 /** 5183 * Finish this activity as well as all activities immediately below it 5184 * in the current task that have the same affinity. This is typically 5185 * used when an application can be launched on to another task (such as 5186 * from an ACTION_VIEW of a content type it understands) and the user 5187 * has used the up navigation to switch out of the current task and in 5188 * to its own task. In this case, if the user has navigated down into 5189 * any other activities of the second application, all of those should 5190 * be removed from the original task as part of the task switch. 5191 * 5192 * <p>Note that this finish does <em>not</em> allow you to deliver results 5193 * to the previous activity, and an exception will be thrown if you are trying 5194 * to do so.</p> 5195 */ 5196 public void finishAffinity() { 5197 if (mParent != null) { 5198 throw new IllegalStateException("Can not be called from an embedded activity"); 5199 } 5200 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5201 throw new IllegalStateException("Can not be called to deliver a result"); 5202 } 5203 try { 5204 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 5205 mFinished = true; 5206 } 5207 } catch (RemoteException e) { 5208 // Empty 5209 } 5210 } 5211 5212 /** 5213 * This is called when a child activity of this one calls its 5214 * {@link #finish} method. The default implementation simply calls 5215 * finish() on this activity (the parent), finishing the entire group. 5216 * 5217 * @param child The activity making the call. 5218 * 5219 * @see #finish 5220 */ 5221 public void finishFromChild(Activity child) { 5222 finish(); 5223 } 5224 5225 /** 5226 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5227 * to reverse its exit Transition. When the exit Transition completes, 5228 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5229 * immediately and the Activity exit Transition is run. 5230 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5231 */ 5232 public void finishAfterTransition() { 5233 if (!mActivityTransitionState.startExitBackTransition(this)) { 5234 finish(); 5235 } 5236 } 5237 5238 /** 5239 * Force finish another activity that you had previously started with 5240 * {@link #startActivityForResult}. 5241 * 5242 * @param requestCode The request code of the activity that you had 5243 * given to startActivityForResult(). If there are multiple 5244 * activities started with this request code, they 5245 * will all be finished. 5246 */ 5247 public void finishActivity(int requestCode) { 5248 if (mParent == null) { 5249 try { 5250 ActivityManagerNative.getDefault() 5251 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5252 } catch (RemoteException e) { 5253 // Empty 5254 } 5255 } else { 5256 mParent.finishActivityFromChild(this, requestCode); 5257 } 5258 } 5259 5260 /** 5261 * This is called when a child activity of this one calls its 5262 * finishActivity(). 5263 * 5264 * @param child The activity making the call. 5265 * @param requestCode Request code that had been used to start the 5266 * activity. 5267 */ 5268 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5269 try { 5270 ActivityManagerNative.getDefault() 5271 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5272 } catch (RemoteException e) { 5273 // Empty 5274 } 5275 } 5276 5277 /** 5278 * Call this when your activity is done and should be closed and the task should be completely 5279 * removed as a part of finishing the root activity of the task. 5280 */ 5281 public void finishAndRemoveTask() { 5282 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5283 } 5284 5285 /** 5286 * Ask that the local app instance of this activity be released to free up its memory. 5287 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5288 * a new instance of the activity will later be re-created if needed due to the user 5289 * navigating back to it. 5290 * 5291 * @return Returns true if the activity was in a state that it has started the process 5292 * of destroying its current instance; returns false if for any reason this could not 5293 * be done: it is currently visible to the user, it is already being destroyed, it is 5294 * being finished, it hasn't yet saved its state, etc. 5295 */ 5296 public boolean releaseInstance() { 5297 try { 5298 return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); 5299 } catch (RemoteException e) { 5300 // Empty 5301 } 5302 return false; 5303 } 5304 5305 /** 5306 * Called when an activity you launched exits, giving you the requestCode 5307 * you started it with, the resultCode it returned, and any additional 5308 * data from it. The <var>resultCode</var> will be 5309 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5310 * didn't return any result, or crashed during its operation. 5311 * 5312 * <p>You will receive this call immediately before onResume() when your 5313 * activity is re-starting. 5314 * 5315 * <p>This method is never invoked if your activity sets 5316 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5317 * <code>true</code>. 5318 * 5319 * @param requestCode The integer request code originally supplied to 5320 * startActivityForResult(), allowing you to identify who this 5321 * result came from. 5322 * @param resultCode The integer result code returned by the child activity 5323 * through its setResult(). 5324 * @param data An Intent, which can return result data to the caller 5325 * (various data can be attached to Intent "extras"). 5326 * 5327 * @see #startActivityForResult 5328 * @see #createPendingResult 5329 * @see #setResult(int) 5330 */ 5331 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5332 } 5333 5334 /** 5335 * Called when an activity you launched with an activity transition exposes this 5336 * Activity through a returning activity transition, giving you the resultCode 5337 * and any additional data from it. This method will only be called if the activity 5338 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5339 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5340 * 5341 * <p>The purpose of this function is to let the called Activity send a hint about 5342 * its state so that this underlying Activity can prepare to be exposed. A call to 5343 * this method does not guarantee that the called Activity has or will be exiting soon. 5344 * It only indicates that it will expose this Activity's Window and it has 5345 * some data to pass to prepare it.</p> 5346 * 5347 * @param resultCode The integer result code returned by the child activity 5348 * through its setResult(). 5349 * @param data An Intent, which can return result data to the caller 5350 * (various data can be attached to Intent "extras"). 5351 */ 5352 public void onActivityReenter(int resultCode, Intent data) { 5353 } 5354 5355 /** 5356 * Create a new PendingIntent object which you can hand to others 5357 * for them to use to send result data back to your 5358 * {@link #onActivityResult} callback. The created object will be either 5359 * one-shot (becoming invalid after a result is sent back) or multiple 5360 * (allowing any number of results to be sent through it). 5361 * 5362 * @param requestCode Private request code for the sender that will be 5363 * associated with the result data when it is returned. The sender can not 5364 * modify this value, allowing you to identify incoming results. 5365 * @param data Default data to supply in the result, which may be modified 5366 * by the sender. 5367 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5368 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5369 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5370 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5371 * or any of the flags as supported by 5372 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5373 * of the intent that can be supplied when the actual send happens. 5374 * 5375 * @return Returns an existing or new PendingIntent matching the given 5376 * parameters. May return null only if 5377 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5378 * supplied. 5379 * 5380 * @see PendingIntent 5381 */ 5382 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5383 @PendingIntent.Flags int flags) { 5384 String packageName = getPackageName(); 5385 try { 5386 data.prepareToLeaveProcess(this); 5387 IIntentSender target = 5388 ActivityManagerNative.getDefault().getIntentSender( 5389 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5390 mParent == null ? mToken : mParent.mToken, 5391 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5392 UserHandle.myUserId()); 5393 return target != null ? new PendingIntent(target) : null; 5394 } catch (RemoteException e) { 5395 // Empty 5396 } 5397 return null; 5398 } 5399 5400 /** 5401 * Change the desired orientation of this activity. If the activity 5402 * is currently in the foreground or otherwise impacting the screen 5403 * orientation, the screen will immediately be changed (possibly causing 5404 * the activity to be restarted). Otherwise, this will be used the next 5405 * time the activity is visible. 5406 * 5407 * @param requestedOrientation An orientation constant as used in 5408 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5409 */ 5410 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5411 if (mParent == null) { 5412 try { 5413 ActivityManagerNative.getDefault().setRequestedOrientation( 5414 mToken, requestedOrientation); 5415 } catch (RemoteException e) { 5416 // Empty 5417 } 5418 } else { 5419 mParent.setRequestedOrientation(requestedOrientation); 5420 } 5421 } 5422 5423 /** 5424 * Return the current requested orientation of the activity. This will 5425 * either be the orientation requested in its component's manifest, or 5426 * the last requested orientation given to 5427 * {@link #setRequestedOrientation(int)}. 5428 * 5429 * @return Returns an orientation constant as used in 5430 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5431 */ 5432 @ActivityInfo.ScreenOrientation 5433 public int getRequestedOrientation() { 5434 if (mParent == null) { 5435 try { 5436 return ActivityManagerNative.getDefault() 5437 .getRequestedOrientation(mToken); 5438 } catch (RemoteException e) { 5439 // Empty 5440 } 5441 } else { 5442 return mParent.getRequestedOrientation(); 5443 } 5444 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5445 } 5446 5447 /** 5448 * Return the identifier of the task this activity is in. This identifier 5449 * will remain the same for the lifetime of the activity. 5450 * 5451 * @return Task identifier, an opaque integer. 5452 */ 5453 public int getTaskId() { 5454 try { 5455 return ActivityManagerNative.getDefault() 5456 .getTaskForActivity(mToken, false); 5457 } catch (RemoteException e) { 5458 return -1; 5459 } 5460 } 5461 5462 /** 5463 * Return whether this activity is the root of a task. The root is the 5464 * first activity in a task. 5465 * 5466 * @return True if this is the root activity, else false. 5467 */ 5468 public boolean isTaskRoot() { 5469 try { 5470 return ActivityManagerNative.getDefault().getTaskForActivity(mToken, true) >= 0; 5471 } catch (RemoteException e) { 5472 return false; 5473 } 5474 } 5475 5476 /** 5477 * Move the task containing this activity to the back of the activity 5478 * stack. The activity's order within the task is unchanged. 5479 * 5480 * @param nonRoot If false then this only works if the activity is the root 5481 * of a task; if true it will work for any activity in 5482 * a task. 5483 * 5484 * @return If the task was moved (or it was already at the 5485 * back) true is returned, else false. 5486 */ 5487 public boolean moveTaskToBack(boolean nonRoot) { 5488 try { 5489 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 5490 mToken, nonRoot); 5491 } catch (RemoteException e) { 5492 // Empty 5493 } 5494 return false; 5495 } 5496 5497 /** 5498 * Returns class name for this activity with the package prefix removed. 5499 * This is the default name used to read and write settings. 5500 * 5501 * @return The local class name. 5502 */ 5503 @NonNull 5504 public String getLocalClassName() { 5505 final String pkg = getPackageName(); 5506 final String cls = mComponent.getClassName(); 5507 int packageLen = pkg.length(); 5508 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5509 || cls.charAt(packageLen) != '.') { 5510 return cls; 5511 } 5512 return cls.substring(packageLen+1); 5513 } 5514 5515 /** 5516 * Returns complete component name of this activity. 5517 * 5518 * @return Returns the complete component name for this activity 5519 */ 5520 public ComponentName getComponentName() 5521 { 5522 return mComponent; 5523 } 5524 5525 /** 5526 * Retrieve a {@link SharedPreferences} object for accessing preferences 5527 * that are private to this activity. This simply calls the underlying 5528 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5529 * class name as the preferences name. 5530 * 5531 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5532 * operation. 5533 * 5534 * @return Returns the single SharedPreferences instance that can be used 5535 * to retrieve and modify the preference values. 5536 */ 5537 public SharedPreferences getPreferences(int mode) { 5538 return getSharedPreferences(getLocalClassName(), mode); 5539 } 5540 5541 private void ensureSearchManager() { 5542 if (mSearchManager != null) { 5543 return; 5544 } 5545 5546 mSearchManager = new SearchManager(this, null); 5547 } 5548 5549 @Override 5550 public Object getSystemService(@ServiceName @NonNull String name) { 5551 if (getBaseContext() == null) { 5552 throw new IllegalStateException( 5553 "System services not available to Activities before onCreate()"); 5554 } 5555 5556 if (WINDOW_SERVICE.equals(name)) { 5557 return mWindowManager; 5558 } else if (SEARCH_SERVICE.equals(name)) { 5559 ensureSearchManager(); 5560 return mSearchManager; 5561 } 5562 return super.getSystemService(name); 5563 } 5564 5565 /** 5566 * Change the title associated with this activity. If this is a 5567 * top-level activity, the title for its window will change. If it 5568 * is an embedded activity, the parent can do whatever it wants 5569 * with it. 5570 */ 5571 public void setTitle(CharSequence title) { 5572 mTitle = title; 5573 onTitleChanged(title, mTitleColor); 5574 5575 if (mParent != null) { 5576 mParent.onChildTitleChanged(this, title); 5577 } 5578 } 5579 5580 /** 5581 * Change the title associated with this activity. If this is a 5582 * top-level activity, the title for its window will change. If it 5583 * is an embedded activity, the parent can do whatever it wants 5584 * with it. 5585 */ 5586 public void setTitle(int titleId) { 5587 setTitle(getText(titleId)); 5588 } 5589 5590 /** 5591 * Change the color of the title associated with this activity. 5592 * <p> 5593 * This method is deprecated starting in API Level 11 and replaced by action 5594 * bar styles. For information on styling the Action Bar, read the <a 5595 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5596 * guide. 5597 * 5598 * @deprecated Use action bar styles instead. 5599 */ 5600 @Deprecated 5601 public void setTitleColor(int textColor) { 5602 mTitleColor = textColor; 5603 onTitleChanged(mTitle, textColor); 5604 } 5605 5606 public final CharSequence getTitle() { 5607 return mTitle; 5608 } 5609 5610 public final int getTitleColor() { 5611 return mTitleColor; 5612 } 5613 5614 protected void onTitleChanged(CharSequence title, int color) { 5615 if (mTitleReady) { 5616 final Window win = getWindow(); 5617 if (win != null) { 5618 win.setTitle(title); 5619 if (color != 0) { 5620 win.setTitleColor(color); 5621 } 5622 } 5623 if (mActionBar != null) { 5624 mActionBar.setWindowTitle(title); 5625 } 5626 } 5627 } 5628 5629 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5630 } 5631 5632 /** 5633 * Sets information describing the task with this activity for presentation inside the Recents 5634 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5635 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5636 * for each property until a suitable value is found. For each task the taskDescription will be 5637 * returned in {@link android.app.ActivityManager.TaskDescription}. 5638 * 5639 * @see ActivityManager#getRecentTasks 5640 * @see android.app.ActivityManager.TaskDescription 5641 * 5642 * @param taskDescription The TaskDescription properties that describe the task with this activity 5643 */ 5644 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5645 if (mTaskDescription != taskDescription) { 5646 mTaskDescription.copyFrom(taskDescription); 5647 // Scale the icon down to something reasonable if it is provided 5648 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 5649 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5650 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, 5651 true); 5652 mTaskDescription.setIcon(icon); 5653 } 5654 } 5655 try { 5656 ActivityManagerNative.getDefault().setTaskDescription(mToken, mTaskDescription); 5657 } catch (RemoteException e) { 5658 } 5659 } 5660 5661 /** 5662 * Sets the visibility of the progress bar in the title. 5663 * <p> 5664 * In order for the progress bar to be shown, the feature must be requested 5665 * via {@link #requestWindowFeature(int)}. 5666 * 5667 * @param visible Whether to show the progress bars in the title. 5668 * @deprecated No longer supported starting in API 21. 5669 */ 5670 @Deprecated 5671 public final void setProgressBarVisibility(boolean visible) { 5672 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5673 Window.PROGRESS_VISIBILITY_OFF); 5674 } 5675 5676 /** 5677 * Sets the visibility of the indeterminate progress bar in the title. 5678 * <p> 5679 * In order for the progress bar to be shown, the feature must be requested 5680 * via {@link #requestWindowFeature(int)}. 5681 * 5682 * @param visible Whether to show the progress bars in the title. 5683 * @deprecated No longer supported starting in API 21. 5684 */ 5685 @Deprecated 5686 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5687 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5688 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5689 } 5690 5691 /** 5692 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5693 * is always indeterminate). 5694 * <p> 5695 * In order for the progress bar to be shown, the feature must be requested 5696 * via {@link #requestWindowFeature(int)}. 5697 * 5698 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5699 * @deprecated No longer supported starting in API 21. 5700 */ 5701 @Deprecated 5702 public final void setProgressBarIndeterminate(boolean indeterminate) { 5703 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5704 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5705 : Window.PROGRESS_INDETERMINATE_OFF); 5706 } 5707 5708 /** 5709 * Sets the progress for the progress bars in the title. 5710 * <p> 5711 * In order for the progress bar to be shown, the feature must be requested 5712 * via {@link #requestWindowFeature(int)}. 5713 * 5714 * @param progress The progress for the progress bar. Valid ranges are from 5715 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5716 * bar will be completely filled and will fade out. 5717 * @deprecated No longer supported starting in API 21. 5718 */ 5719 @Deprecated 5720 public final void setProgress(int progress) { 5721 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5722 } 5723 5724 /** 5725 * Sets the secondary progress for the progress bar in the title. This 5726 * progress is drawn between the primary progress (set via 5727 * {@link #setProgress(int)} and the background. It can be ideal for media 5728 * scenarios such as showing the buffering progress while the default 5729 * progress shows the play progress. 5730 * <p> 5731 * In order for the progress bar to be shown, the feature must be requested 5732 * via {@link #requestWindowFeature(int)}. 5733 * 5734 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5735 * 0 to 10000 (both inclusive). 5736 * @deprecated No longer supported starting in API 21. 5737 */ 5738 @Deprecated 5739 public final void setSecondaryProgress(int secondaryProgress) { 5740 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5741 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5742 } 5743 5744 /** 5745 * Suggests an audio stream whose volume should be changed by the hardware 5746 * volume controls. 5747 * <p> 5748 * The suggested audio stream will be tied to the window of this Activity. 5749 * Volume requests which are received while the Activity is in the 5750 * foreground will affect this stream. 5751 * <p> 5752 * It is not guaranteed that the hardware volume controls will always change 5753 * this stream's volume (for example, if a call is in progress, its stream's 5754 * volume may be changed instead). To reset back to the default, use 5755 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5756 * 5757 * @param streamType The type of the audio stream whose volume should be 5758 * changed by the hardware volume controls. 5759 */ 5760 public final void setVolumeControlStream(int streamType) { 5761 getWindow().setVolumeControlStream(streamType); 5762 } 5763 5764 /** 5765 * Gets the suggested audio stream whose volume should be changed by the 5766 * hardware volume controls. 5767 * 5768 * @return The suggested audio stream type whose volume should be changed by 5769 * the hardware volume controls. 5770 * @see #setVolumeControlStream(int) 5771 */ 5772 public final int getVolumeControlStream() { 5773 return getWindow().getVolumeControlStream(); 5774 } 5775 5776 /** 5777 * Sets a {@link MediaController} to send media keys and volume changes to. 5778 * <p> 5779 * The controller will be tied to the window of this Activity. Media key and 5780 * volume events which are received while the Activity is in the foreground 5781 * will be forwarded to the controller and used to invoke transport controls 5782 * or adjust the volume. This may be used instead of or in addition to 5783 * {@link #setVolumeControlStream} to affect a specific session instead of a 5784 * specific stream. 5785 * <p> 5786 * It is not guaranteed that the hardware volume controls will always change 5787 * this session's volume (for example, if a call is in progress, its 5788 * stream's volume may be changed instead). To reset back to the default use 5789 * null as the controller. 5790 * 5791 * @param controller The controller for the session which should receive 5792 * media keys and volume changes. 5793 */ 5794 public final void setMediaController(MediaController controller) { 5795 getWindow().setMediaController(controller); 5796 } 5797 5798 /** 5799 * Gets the controller which should be receiving media key and volume events 5800 * while this activity is in the foreground. 5801 * 5802 * @return The controller which should receive events. 5803 * @see #setMediaController(android.media.session.MediaController) 5804 */ 5805 public final MediaController getMediaController() { 5806 return getWindow().getMediaController(); 5807 } 5808 5809 /** 5810 * Runs the specified action on the UI thread. If the current thread is the UI 5811 * thread, then the action is executed immediately. If the current thread is 5812 * not the UI thread, the action is posted to the event queue of the UI thread. 5813 * 5814 * @param action the action to run on the UI thread 5815 */ 5816 public final void runOnUiThread(Runnable action) { 5817 if (Thread.currentThread() != mUiThread) { 5818 mHandler.post(action); 5819 } else { 5820 action.run(); 5821 } 5822 } 5823 5824 /** 5825 * Standard implementation of 5826 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5827 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5828 * This implementation does nothing and is for 5829 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5830 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5831 * 5832 * @see android.view.LayoutInflater#createView 5833 * @see android.view.Window#getLayoutInflater 5834 */ 5835 @Nullable 5836 public View onCreateView(String name, Context context, AttributeSet attrs) { 5837 return null; 5838 } 5839 5840 /** 5841 * Standard implementation of 5842 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5843 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5844 * This implementation handles <fragment> tags to embed fragments inside 5845 * of the activity. 5846 * 5847 * @see android.view.LayoutInflater#createView 5848 * @see android.view.Window#getLayoutInflater 5849 */ 5850 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5851 if (!"fragment".equals(name)) { 5852 return onCreateView(name, context, attrs); 5853 } 5854 5855 return mFragments.onCreateView(parent, name, context, attrs); 5856 } 5857 5858 /** 5859 * Print the Activity's state into the given stream. This gets invoked if 5860 * you run "adb shell dumpsys activity <activity_component_name>". 5861 * 5862 * @param prefix Desired prefix to prepend at each line of output. 5863 * @param fd The raw file descriptor that the dump is being sent to. 5864 * @param writer The PrintWriter to which you should dump your state. This will be 5865 * closed for you after you return. 5866 * @param args additional arguments to the dump request. 5867 */ 5868 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5869 dumpInner(prefix, fd, writer, args); 5870 } 5871 5872 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5873 writer.print(prefix); writer.print("Local Activity "); 5874 writer.print(Integer.toHexString(System.identityHashCode(this))); 5875 writer.println(" State:"); 5876 String innerPrefix = prefix + " "; 5877 writer.print(innerPrefix); writer.print("mResumed="); 5878 writer.print(mResumed); writer.print(" mStopped="); 5879 writer.print(mStopped); writer.print(" mFinished="); 5880 writer.println(mFinished); 5881 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5882 writer.println(mChangingConfigurations); 5883 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5884 writer.println(mCurrentConfig); 5885 5886 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 5887 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 5888 if (mVoiceInteractor != null) { 5889 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 5890 } 5891 5892 if (getWindow() != null && 5893 getWindow().peekDecorView() != null && 5894 getWindow().peekDecorView().getViewRootImpl() != null) { 5895 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5896 } 5897 5898 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5899 } 5900 5901 /** 5902 * Bit indicating that this activity is "immersive" and should not be 5903 * interrupted by notifications if possible. 5904 * 5905 * This value is initially set by the manifest property 5906 * <code>android:immersive</code> but may be changed at runtime by 5907 * {@link #setImmersive}. 5908 * 5909 * @see #setImmersive(boolean) 5910 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5911 */ 5912 public boolean isImmersive() { 5913 try { 5914 return ActivityManagerNative.getDefault().isImmersive(mToken); 5915 } catch (RemoteException e) { 5916 return false; 5917 } 5918 } 5919 5920 /** 5921 * Indication of whether this is the highest level activity in this task. Can be used to 5922 * determine whether an activity launched by this activity was placed in the same task or 5923 * another task. 5924 * 5925 * @return true if this is the topmost, non-finishing activity in its task. 5926 */ 5927 private boolean isTopOfTask() { 5928 if (mToken == null || mWindow == null || !mWindowAdded) { 5929 return false; 5930 } 5931 try { 5932 return ActivityManagerNative.getDefault().isTopOfTask(mToken); 5933 } catch (RemoteException e) { 5934 return false; 5935 } 5936 } 5937 5938 /** 5939 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5940 * fullscreen opaque Activity. 5941 * <p> 5942 * Call this whenever the background of a translucent Activity has changed to become opaque. 5943 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5944 * <p> 5945 * This call has no effect on non-translucent activities or on activities with the 5946 * {@link android.R.attr#windowIsFloating} attribute. 5947 * 5948 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5949 * ActivityOptions) 5950 * @see TranslucentConversionListener 5951 * 5952 * @hide 5953 */ 5954 @SystemApi 5955 public void convertFromTranslucent() { 5956 try { 5957 mTranslucentCallback = null; 5958 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5959 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5960 } 5961 } catch (RemoteException e) { 5962 // pass 5963 } 5964 } 5965 5966 /** 5967 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5968 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5969 * <p> 5970 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5971 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5972 * be called indicating that it is safe to make this activity translucent again. Until 5973 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5974 * behind the frontmost Activity will be indeterminate. 5975 * <p> 5976 * This call has no effect on non-translucent activities or on activities with the 5977 * {@link android.R.attr#windowIsFloating} attribute. 5978 * 5979 * @param callback the method to call when all visible Activities behind this one have been 5980 * drawn and it is safe to make this Activity translucent again. 5981 * @param options activity options delivered to the activity below this one. The options 5982 * are retrieved using {@link #getActivityOptions}. 5983 * @return <code>true</code> if Window was opaque and will become translucent or 5984 * <code>false</code> if window was translucent and no change needed to be made. 5985 * 5986 * @see #convertFromTranslucent() 5987 * @see TranslucentConversionListener 5988 * 5989 * @hide 5990 */ 5991 @SystemApi 5992 public boolean convertToTranslucent(TranslucentConversionListener callback, 5993 ActivityOptions options) { 5994 boolean drawComplete; 5995 try { 5996 mTranslucentCallback = callback; 5997 mChangeCanvasToTranslucent = 5998 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 5999 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6000 drawComplete = true; 6001 } catch (RemoteException e) { 6002 // Make callback return as though it timed out. 6003 mChangeCanvasToTranslucent = false; 6004 drawComplete = false; 6005 } 6006 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 6007 // Window is already translucent. 6008 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6009 } 6010 return mChangeCanvasToTranslucent; 6011 } 6012 6013 /** @hide */ 6014 void onTranslucentConversionComplete(boolean drawComplete) { 6015 if (mTranslucentCallback != null) { 6016 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 6017 mTranslucentCallback = null; 6018 } 6019 if (mChangeCanvasToTranslucent) { 6020 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 6021 } 6022 } 6023 6024 /** @hide */ 6025 public void onNewActivityOptions(ActivityOptions options) { 6026 mActivityTransitionState.setEnterActivityOptions(this, options); 6027 if (!mStopped) { 6028 mActivityTransitionState.enterReady(this); 6029 } 6030 } 6031 6032 /** 6033 * Retrieve the ActivityOptions passed in from the launching activity or passed back 6034 * from an activity launched by this activity in its call to {@link 6035 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 6036 * 6037 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6038 * @hide 6039 */ 6040 ActivityOptions getActivityOptions() { 6041 try { 6042 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 6043 } catch (RemoteException e) { 6044 } 6045 return null; 6046 } 6047 6048 /** 6049 * Activities that want to remain visible behind a translucent activity above them must call 6050 * this method anytime between the start of {@link #onResume()} and the return from 6051 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6052 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6053 * 6054 * <p>The actions of this call are reset each time that this activity is brought to the 6055 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6056 * to not have requested visible behind. Therefore, if you want this activity to continue to 6057 * be visible in the background you must call this method again. 6058 * 6059 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6060 * for dialog and translucent activities. 6061 * 6062 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6063 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6064 * 6065 * <p>False will be returned any time this method is called between the return of onPause and 6066 * the next call to onResume. 6067 * 6068 * @param visible true to notify the system that the activity wishes to be visible behind other 6069 * translucent activities, false to indicate otherwise. Resources must be 6070 * released when passing false to this method. 6071 * @return the resulting visibiity state. If true the activity will remain visible beyond 6072 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6073 * then the activity may not count on being visible behind other translucent activities, 6074 * and must stop any media playback and release resources. 6075 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6076 * the return value must be checked. 6077 * 6078 * @see #onVisibleBehindCanceled() 6079 * @see #onBackgroundVisibleBehindChanged(boolean) 6080 */ 6081 public boolean requestVisibleBehind(boolean visible) { 6082 if (!mResumed) { 6083 // Do not permit paused or stopped activities to do this. 6084 visible = false; 6085 } 6086 try { 6087 mVisibleBehind = ActivityManagerNative.getDefault() 6088 .requestVisibleBehind(mToken, visible) && visible; 6089 } catch (RemoteException e) { 6090 mVisibleBehind = false; 6091 } 6092 return mVisibleBehind; 6093 } 6094 6095 /** 6096 * Called when a translucent activity over this activity is becoming opaque or another 6097 * activity is being launched. Activities that override this method must call 6098 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6099 * 6100 * <p>When this method is called the activity has 500 msec to release any resources it may be 6101 * using while visible in the background. 6102 * If the activity has not returned from this method in 500 msec the system will destroy 6103 * the activity and kill the process in order to recover the resources for another 6104 * process. Otherwise {@link #onStop()} will be called following return. 6105 * 6106 * @see #requestVisibleBehind(boolean) 6107 * @see #onBackgroundVisibleBehindChanged(boolean) 6108 */ 6109 @CallSuper 6110 public void onVisibleBehindCanceled() { 6111 mCalled = true; 6112 } 6113 6114 /** 6115 * Translucent activities may call this to determine if there is an activity below them that 6116 * is currently set to be visible in the background. 6117 * 6118 * @return true if an activity below is set to visible according to the most recent call to 6119 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6120 * 6121 * @see #requestVisibleBehind(boolean) 6122 * @see #onVisibleBehindCanceled() 6123 * @see #onBackgroundVisibleBehindChanged(boolean) 6124 * @hide 6125 */ 6126 @SystemApi 6127 public boolean isBackgroundVisibleBehind() { 6128 try { 6129 return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); 6130 } catch (RemoteException e) { 6131 } 6132 return false; 6133 } 6134 6135 /** 6136 * The topmost foreground activity will receive this call when the background visibility state 6137 * of the activity below it changes. 6138 * 6139 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6140 * due to a background activity finishing itself. 6141 * 6142 * @param visible true if a background activity is visible, false otherwise. 6143 * 6144 * @see #requestVisibleBehind(boolean) 6145 * @see #onVisibleBehindCanceled() 6146 * @hide 6147 */ 6148 @SystemApi 6149 public void onBackgroundVisibleBehindChanged(boolean visible) { 6150 } 6151 6152 /** 6153 * Activities cannot draw during the period that their windows are animating in. In order 6154 * to know when it is safe to begin drawing they can override this method which will be 6155 * called when the entering animation has completed. 6156 */ 6157 public void onEnterAnimationComplete() { 6158 } 6159 6160 /** 6161 * @hide 6162 */ 6163 public void dispatchEnterAnimationComplete() { 6164 onEnterAnimationComplete(); 6165 if (getWindow() != null && getWindow().getDecorView() != null) { 6166 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6167 } 6168 } 6169 6170 /** 6171 * Adjust the current immersive mode setting. 6172 * 6173 * Note that changing this value will have no effect on the activity's 6174 * {@link android.content.pm.ActivityInfo} structure; that is, if 6175 * <code>android:immersive</code> is set to <code>true</code> 6176 * in the application's manifest entry for this activity, the {@link 6177 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6178 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6179 * FLAG_IMMERSIVE} bit set. 6180 * 6181 * @see #isImmersive() 6182 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6183 */ 6184 public void setImmersive(boolean i) { 6185 try { 6186 ActivityManagerNative.getDefault().setImmersive(mToken, i); 6187 } catch (RemoteException e) { 6188 // pass 6189 } 6190 } 6191 6192 /** 6193 * Enable or disable virtual reality (VR) mode. 6194 * 6195 * <p>VR mode is a hint to Android system services to switch to a mode optimized for 6196 * high-performance stereoscopic rendering. This mode will be enabled while this Activity has 6197 * focus.</p> 6198 * 6199 * @param enabled {@code true} to enable this mode. 6200 * @param requestedComponent the name of the component to use as a 6201 * {@link android.service.vr.VrListenerService} while VR mode is enabled. 6202 * 6203 * @throws android.content.pm.PackageManager.NameNotFoundException; 6204 */ 6205 public void setVrModeEnabled(boolean enabled, @NonNull ComponentName requestedComponent) 6206 throws PackageManager.NameNotFoundException { 6207 try { 6208 if (ActivityManagerNative.getDefault().setVrMode(mToken, enabled, requestedComponent) 6209 != 0) { 6210 throw new PackageManager.NameNotFoundException( 6211 requestedComponent.flattenToString()); 6212 } 6213 } catch (RemoteException e) { 6214 // pass 6215 } 6216 } 6217 6218 /** 6219 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6220 * 6221 * @param callback Callback that will manage lifecycle events for this action mode 6222 * @return The ActionMode that was started, or null if it was canceled 6223 * 6224 * @see ActionMode 6225 */ 6226 @Nullable 6227 public ActionMode startActionMode(ActionMode.Callback callback) { 6228 return mWindow.getDecorView().startActionMode(callback); 6229 } 6230 6231 /** 6232 * Start an action mode of the given type. 6233 * 6234 * @param callback Callback that will manage lifecycle events for this action mode 6235 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6236 * @return The ActionMode that was started, or null if it was canceled 6237 * 6238 * @see ActionMode 6239 */ 6240 @Nullable 6241 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6242 return mWindow.getDecorView().startActionMode(callback, type); 6243 } 6244 6245 /** 6246 * Give the Activity a chance to control the UI for an action mode requested 6247 * by the system. 6248 * 6249 * <p>Note: If you are looking for a notification callback that an action mode 6250 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6251 * 6252 * @param callback The callback that should control the new action mode 6253 * @return The new action mode, or <code>null</code> if the activity does not want to 6254 * provide special handling for this action mode. (It will be handled by the system.) 6255 */ 6256 @Nullable 6257 @Override 6258 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6259 // Only Primary ActionModes are represented in the ActionBar. 6260 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6261 initWindowDecorActionBar(); 6262 if (mActionBar != null) { 6263 return mActionBar.startActionMode(callback); 6264 } 6265 } 6266 return null; 6267 } 6268 6269 /** 6270 * {@inheritDoc} 6271 */ 6272 @Nullable 6273 @Override 6274 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6275 try { 6276 mActionModeTypeStarting = type; 6277 return onWindowStartingActionMode(callback); 6278 } finally { 6279 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6280 } 6281 } 6282 6283 /** 6284 * Notifies the Activity that an action mode has been started. 6285 * Activity subclasses overriding this method should call the superclass implementation. 6286 * 6287 * @param mode The new action mode. 6288 */ 6289 @CallSuper 6290 @Override 6291 public void onActionModeStarted(ActionMode mode) { 6292 } 6293 6294 /** 6295 * Notifies the activity that an action mode has finished. 6296 * Activity subclasses overriding this method should call the superclass implementation. 6297 * 6298 * @param mode The action mode that just finished. 6299 */ 6300 @CallSuper 6301 @Override 6302 public void onActionModeFinished(ActionMode mode) { 6303 } 6304 6305 /** 6306 * Returns true if the app should recreate the task when navigating 'up' from this activity 6307 * by using targetIntent. 6308 * 6309 * <p>If this method returns false the app can trivially call 6310 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6311 * up navigation. If this method returns false, the app should synthesize a new task stack 6312 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6313 * 6314 * @param targetIntent An intent representing the target destination for up navigation 6315 * @return true if navigating up should recreate a new task stack, false if the same task 6316 * should be used for the destination 6317 */ 6318 public boolean shouldUpRecreateTask(Intent targetIntent) { 6319 try { 6320 PackageManager pm = getPackageManager(); 6321 ComponentName cn = targetIntent.getComponent(); 6322 if (cn == null) { 6323 cn = targetIntent.resolveActivity(pm); 6324 } 6325 ActivityInfo info = pm.getActivityInfo(cn, 0); 6326 if (info.taskAffinity == null) { 6327 return false; 6328 } 6329 return ActivityManagerNative.getDefault() 6330 .shouldUpRecreateTask(mToken, info.taskAffinity); 6331 } catch (RemoteException e) { 6332 return false; 6333 } catch (NameNotFoundException e) { 6334 return false; 6335 } 6336 } 6337 6338 /** 6339 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6340 * in the process. If the activity indicated by upIntent already exists in the task's history, 6341 * this activity and all others before the indicated activity in the history stack will be 6342 * finished. 6343 * 6344 * <p>If the indicated activity does not appear in the history stack, this will finish 6345 * each activity in this task until the root activity of the task is reached, resulting in 6346 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6347 * when an activity may be reached by a path not passing through a canonical parent 6348 * activity.</p> 6349 * 6350 * <p>This method should be used when performing up navigation from within the same task 6351 * as the destination. If up navigation should cross tasks in some cases, see 6352 * {@link #shouldUpRecreateTask(Intent)}.</p> 6353 * 6354 * @param upIntent An intent representing the target destination for up navigation 6355 * 6356 * @return true if up navigation successfully reached the activity indicated by upIntent and 6357 * upIntent was delivered to it. false if an instance of the indicated activity could 6358 * not be found and this activity was simply finished normally. 6359 */ 6360 public boolean navigateUpTo(Intent upIntent) { 6361 if (mParent == null) { 6362 ComponentName destInfo = upIntent.getComponent(); 6363 if (destInfo == null) { 6364 destInfo = upIntent.resolveActivity(getPackageManager()); 6365 if (destInfo == null) { 6366 return false; 6367 } 6368 upIntent = new Intent(upIntent); 6369 upIntent.setComponent(destInfo); 6370 } 6371 int resultCode; 6372 Intent resultData; 6373 synchronized (this) { 6374 resultCode = mResultCode; 6375 resultData = mResultData; 6376 } 6377 if (resultData != null) { 6378 resultData.prepareToLeaveProcess(this); 6379 } 6380 try { 6381 upIntent.prepareToLeaveProcess(this); 6382 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 6383 resultCode, resultData); 6384 } catch (RemoteException e) { 6385 return false; 6386 } 6387 } else { 6388 return mParent.navigateUpToFromChild(this, upIntent); 6389 } 6390 } 6391 6392 /** 6393 * This is called when a child activity of this one calls its 6394 * {@link #navigateUpTo} method. The default implementation simply calls 6395 * navigateUpTo(upIntent) on this activity (the parent). 6396 * 6397 * @param child The activity making the call. 6398 * @param upIntent An intent representing the target destination for up navigation 6399 * 6400 * @return true if up navigation successfully reached the activity indicated by upIntent and 6401 * upIntent was delivered to it. false if an instance of the indicated activity could 6402 * not be found and this activity was simply finished normally. 6403 */ 6404 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6405 return navigateUpTo(upIntent); 6406 } 6407 6408 /** 6409 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6410 * this activity's logical parent. The logical parent is named in the application's manifest 6411 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6412 * Activity subclasses may override this method to modify the Intent returned by 6413 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6414 * the parent intent entirely. 6415 * 6416 * @return a new Intent targeting the defined parent of this activity or null if 6417 * there is no valid parent. 6418 */ 6419 @Nullable 6420 public Intent getParentActivityIntent() { 6421 final String parentName = mActivityInfo.parentActivityName; 6422 if (TextUtils.isEmpty(parentName)) { 6423 return null; 6424 } 6425 6426 // If the parent itself has no parent, generate a main activity intent. 6427 final ComponentName target = new ComponentName(this, parentName); 6428 try { 6429 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6430 final String parentActivity = parentInfo.parentActivityName; 6431 final Intent parentIntent = parentActivity == null 6432 ? Intent.makeMainActivity(target) 6433 : new Intent().setComponent(target); 6434 return parentIntent; 6435 } catch (NameNotFoundException e) { 6436 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6437 "' in manifest"); 6438 return null; 6439 } 6440 } 6441 6442 /** 6443 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6444 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6445 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6446 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6447 * 6448 * @param callback Used to manipulate shared element transitions on the launched Activity. 6449 */ 6450 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6451 if (callback == null) { 6452 callback = SharedElementCallback.NULL_CALLBACK; 6453 } 6454 mEnterTransitionListener = callback; 6455 } 6456 6457 /** 6458 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6459 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6460 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6461 * calls will only come when returning from the started Activity. 6462 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6463 * 6464 * @param callback Used to manipulate shared element transitions on the launching Activity. 6465 */ 6466 public void setExitSharedElementCallback(SharedElementCallback callback) { 6467 if (callback == null) { 6468 callback = SharedElementCallback.NULL_CALLBACK; 6469 } 6470 mExitTransitionListener = callback; 6471 } 6472 6473 /** 6474 * Postpone the entering activity transition when Activity was started with 6475 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6476 * android.util.Pair[])}. 6477 * <p>This method gives the Activity the ability to delay starting the entering and 6478 * shared element transitions until all data is loaded. Until then, the Activity won't 6479 * draw into its window, leaving the window transparent. This may also cause the 6480 * returning animation to be delayed until data is ready. This method should be 6481 * called in {@link #onCreate(android.os.Bundle)} or in 6482 * {@link #onActivityReenter(int, android.content.Intent)}. 6483 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6484 * start the transitions. If the Activity did not use 6485 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6486 * android.util.Pair[])}, then this method does nothing.</p> 6487 */ 6488 public void postponeEnterTransition() { 6489 mActivityTransitionState.postponeEnterTransition(); 6490 } 6491 6492 /** 6493 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6494 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6495 * to have your Activity start drawing. 6496 */ 6497 public void startPostponedEnterTransition() { 6498 mActivityTransitionState.startPostponedEnterTransition(); 6499 } 6500 6501 /** 6502 * Create {@link DropPermissions} object bound to this activity and controlling the access 6503 * permissions for content URIs associated with the {@link DragEvent}. 6504 * @param event Drag event 6505 * @return The DropPermissions object used to control access to the content URIs. Null if 6506 * no content URIs are associated with the event or if permissions could not be granted. 6507 */ 6508 public DropPermissions requestDropPermissions(DragEvent event) { 6509 DropPermissions dropPermissions = DropPermissions.obtain(event); 6510 if (dropPermissions != null && dropPermissions.take(getActivityToken())) { 6511 return dropPermissions; 6512 } 6513 return null; 6514 } 6515 6516 // ------------------ Internal API ------------------ 6517 6518 final void setParent(Activity parent) { 6519 mParent = parent; 6520 } 6521 6522 final void attach(Context context, ActivityThread aThread, 6523 Instrumentation instr, IBinder token, int ident, 6524 Application application, Intent intent, ActivityInfo info, 6525 CharSequence title, Activity parent, String id, 6526 NonConfigurationInstances lastNonConfigurationInstances, 6527 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 6528 Window window) { 6529 attachBaseContext(context); 6530 6531 mFragments.attachHost(null /*parent*/); 6532 6533 mWindow = new PhoneWindow(this, window); 6534 mWindow.setWindowControllerCallback(this); 6535 mWindow.setCallback(this); 6536 mWindow.setOnWindowDismissedCallback(this); 6537 mWindow.getLayoutInflater().setPrivateFactory(this); 6538 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 6539 mWindow.setSoftInputMode(info.softInputMode); 6540 } 6541 if (info.uiOptions != 0) { 6542 mWindow.setUiOptions(info.uiOptions); 6543 } 6544 mUiThread = Thread.currentThread(); 6545 6546 mMainThread = aThread; 6547 mInstrumentation = instr; 6548 mToken = token; 6549 mIdent = ident; 6550 mApplication = application; 6551 mIntent = intent; 6552 mReferrer = referrer; 6553 mComponent = intent.getComponent(); 6554 mActivityInfo = info; 6555 mTitle = title; 6556 mParent = parent; 6557 mEmbeddedID = id; 6558 mLastNonConfigurationInstances = lastNonConfigurationInstances; 6559 if (voiceInteractor != null) { 6560 if (lastNonConfigurationInstances != null) { 6561 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 6562 } else { 6563 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 6564 Looper.myLooper()); 6565 } 6566 } 6567 6568 mWindow.setWindowManager( 6569 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 6570 mToken, mComponent.flattenToString(), 6571 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 6572 if (mParent != null) { 6573 mWindow.setContainer(mParent.getWindow()); 6574 } 6575 mWindowManager = mWindow.getWindowManager(); 6576 mCurrentConfig = config; 6577 } 6578 6579 /** @hide */ 6580 public final IBinder getActivityToken() { 6581 return mParent != null ? mParent.getActivityToken() : mToken; 6582 } 6583 6584 final void performCreateCommon() { 6585 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 6586 com.android.internal.R.styleable.Window_windowNoDisplay, false); 6587 mFragments.dispatchActivityCreated(); 6588 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6589 } 6590 6591 final void performCreate(Bundle icicle) { 6592 restoreHasCurrentPermissionRequest(icicle); 6593 onCreate(icicle); 6594 mActivityTransitionState.readState(icicle); 6595 performCreateCommon(); 6596 } 6597 6598 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 6599 restoreHasCurrentPermissionRequest(icicle); 6600 onCreate(icicle, persistentState); 6601 mActivityTransitionState.readState(icicle); 6602 performCreateCommon(); 6603 } 6604 6605 final void performStart() { 6606 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6607 mFragments.noteStateNotSaved(); 6608 mCalled = false; 6609 mFragments.execPendingActions(); 6610 mInstrumentation.callActivityOnStart(this); 6611 if (!mCalled) { 6612 throw new SuperNotCalledException( 6613 "Activity " + mComponent.toShortString() + 6614 " did not call through to super.onStart()"); 6615 } 6616 mFragments.dispatchStart(); 6617 mFragments.reportLoaderStart(); 6618 6619 // This property is set for all builds except final release 6620 boolean isDlwarningEnabled = SystemProperties.getInt("ro.bionic.ld.warning", 0) == 1; 6621 boolean isAppDebuggable = 6622 (mApplication.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 6623 6624 if (isAppDebuggable || isDlwarningEnabled) { 6625 String dlwarning = getDlWarning(); 6626 if (dlwarning != null) { 6627 String appName = getApplicationInfo().loadLabel(getPackageManager()) 6628 .toString(); 6629 String warning = "Detected problems with app native libraries\n" + 6630 "(please consult log for detail):\n" + dlwarning; 6631 if (isAppDebuggable) { 6632 new AlertDialog.Builder(this). 6633 setTitle(appName). 6634 setMessage(warning). 6635 setPositiveButton(android.R.string.ok, null). 6636 setCancelable(false). 6637 show(); 6638 } else { 6639 Toast.makeText(this, appName + "\n" + warning, Toast.LENGTH_LONG).show(); 6640 } 6641 } 6642 } 6643 6644 mActivityTransitionState.enterReady(this); 6645 } 6646 6647 final void performRestart() { 6648 mFragments.noteStateNotSaved(); 6649 6650 if (mToken != null && mParent == null) { 6651 // No need to check mStopped, the roots will check if they were actually stopped. 6652 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 6653 } 6654 6655 if (mStopped) { 6656 mStopped = false; 6657 6658 synchronized (mManagedCursors) { 6659 final int N = mManagedCursors.size(); 6660 for (int i=0; i<N; i++) { 6661 ManagedCursor mc = mManagedCursors.get(i); 6662 if (mc.mReleased || mc.mUpdated) { 6663 if (!mc.mCursor.requery()) { 6664 if (getApplicationInfo().targetSdkVersion 6665 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 6666 throw new IllegalStateException( 6667 "trying to requery an already closed cursor " 6668 + mc.mCursor); 6669 } 6670 } 6671 mc.mReleased = false; 6672 mc.mUpdated = false; 6673 } 6674 } 6675 } 6676 6677 mCalled = false; 6678 mInstrumentation.callActivityOnRestart(this); 6679 if (!mCalled) { 6680 throw new SuperNotCalledException( 6681 "Activity " + mComponent.toShortString() + 6682 " did not call through to super.onRestart()"); 6683 } 6684 performStart(); 6685 } 6686 } 6687 6688 final void performResume() { 6689 performRestart(); 6690 6691 mFragments.execPendingActions(); 6692 6693 mLastNonConfigurationInstances = null; 6694 6695 mCalled = false; 6696 // mResumed is set by the instrumentation 6697 mInstrumentation.callActivityOnResume(this); 6698 if (!mCalled) { 6699 throw new SuperNotCalledException( 6700 "Activity " + mComponent.toShortString() + 6701 " did not call through to super.onResume()"); 6702 } 6703 6704 // invisible activities must be finished before onResume() completes 6705 if (!mVisibleFromClient && !mFinished) { 6706 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 6707 if (getApplicationInfo().targetSdkVersion 6708 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 6709 throw new IllegalStateException( 6710 "Activity " + mComponent.toShortString() + 6711 " did not call finish() prior to onResume() completing"); 6712 } 6713 } 6714 6715 // Now really resume, and install the current status bar and menu. 6716 mCalled = false; 6717 6718 mFragments.dispatchResume(); 6719 mFragments.execPendingActions(); 6720 6721 onPostResume(); 6722 if (!mCalled) { 6723 throw new SuperNotCalledException( 6724 "Activity " + mComponent.toShortString() + 6725 " did not call through to super.onPostResume()"); 6726 } 6727 } 6728 6729 final void performPause() { 6730 mDoReportFullyDrawn = false; 6731 mFragments.dispatchPause(); 6732 mCalled = false; 6733 onPause(); 6734 mResumed = false; 6735 if (!mCalled && getApplicationInfo().targetSdkVersion 6736 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 6737 throw new SuperNotCalledException( 6738 "Activity " + mComponent.toShortString() + 6739 " did not call through to super.onPause()"); 6740 } 6741 mResumed = false; 6742 } 6743 6744 final void performUserLeaving() { 6745 onUserInteraction(); 6746 onUserLeaveHint(); 6747 } 6748 6749 final void performStop(boolean preserveWindow) { 6750 mDoReportFullyDrawn = false; 6751 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 6752 6753 if (!mStopped) { 6754 if (mWindow != null) { 6755 mWindow.closeAllPanels(); 6756 } 6757 6758 // If we're preserving the window, don't setStoppedState to true, since we 6759 // need the window started immediately again. Stopping the window will 6760 // destroys hardware resources and causes flicker. 6761 if (!preserveWindow && mToken != null && mParent == null) { 6762 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 6763 } 6764 6765 mFragments.dispatchStop(); 6766 6767 mCalled = false; 6768 mInstrumentation.callActivityOnStop(this); 6769 if (!mCalled) { 6770 throw new SuperNotCalledException( 6771 "Activity " + mComponent.toShortString() + 6772 " did not call through to super.onStop()"); 6773 } 6774 6775 synchronized (mManagedCursors) { 6776 final int N = mManagedCursors.size(); 6777 for (int i=0; i<N; i++) { 6778 ManagedCursor mc = mManagedCursors.get(i); 6779 if (!mc.mReleased) { 6780 mc.mCursor.deactivate(); 6781 mc.mReleased = true; 6782 } 6783 } 6784 } 6785 6786 mStopped = true; 6787 } 6788 mResumed = false; 6789 } 6790 6791 final void performDestroy() { 6792 mDestroyed = true; 6793 mWindow.destroy(); 6794 mFragments.dispatchDestroy(); 6795 onDestroy(); 6796 mFragments.doLoaderDestroy(); 6797 if (mVoiceInteractor != null) { 6798 mVoiceInteractor.detachActivity(); 6799 } 6800 } 6801 6802 /** 6803 * @hide 6804 */ 6805 public final boolean isResumed() { 6806 return mResumed; 6807 } 6808 6809 private void storeHasCurrentPermissionRequest(Bundle bundle) { 6810 if (bundle != null && mHasCurrentPermissionsRequest) { 6811 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 6812 } 6813 } 6814 6815 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 6816 if (bundle != null) { 6817 mHasCurrentPermissionsRequest = bundle.getBoolean( 6818 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 6819 } 6820 } 6821 6822 void dispatchActivityResult(String who, int requestCode, 6823 int resultCode, Intent data) { 6824 if (false) Log.v( 6825 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 6826 + ", resCode=" + resultCode + ", data=" + data); 6827 mFragments.noteStateNotSaved(); 6828 if (who == null) { 6829 onActivityResult(requestCode, resultCode, data); 6830 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 6831 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 6832 if (TextUtils.isEmpty(who)) { 6833 dispatchRequestPermissionsResult(requestCode, data); 6834 } else { 6835 Fragment frag = mFragments.findFragmentByWho(who); 6836 if (frag != null) { 6837 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 6838 } 6839 } 6840 } else if (who.startsWith("@android:view:")) { 6841 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 6842 getActivityToken()); 6843 for (ViewRootImpl viewRoot : views) { 6844 if (viewRoot.getView() != null 6845 && viewRoot.getView().dispatchActivityResult( 6846 who, requestCode, resultCode, data)) { 6847 return; 6848 } 6849 } 6850 } else { 6851 Fragment frag = mFragments.findFragmentByWho(who); 6852 if (frag != null) { 6853 frag.onActivityResult(requestCode, resultCode, data); 6854 } 6855 } 6856 } 6857 6858 /** 6859 * Request to put this Activity in a mode where the user is locked to the 6860 * current task. 6861 * 6862 * This will prevent the user from launching other apps, going to settings, or reaching the 6863 * home screen. This does not include those apps whose {@link android.R.attr#lockTaskMode} 6864 * values permit launching while locked. 6865 * 6866 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true or 6867 * lockTaskMode=lockTaskModeAlways for this component then the app will go directly into 6868 * Lock Task mode. The user will not be able to exit this mode until 6869 * {@link Activity#stopLockTask()} is called. 6870 * 6871 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 6872 * then the system will prompt the user with a dialog requesting permission to enter 6873 * this mode. When entered through this method the user can exit at any time through 6874 * an action described by the request dialog. Calling stopLockTask will also exit the 6875 * mode. 6876 * 6877 * @see android.R.attr#lockTaskMode 6878 */ 6879 public void startLockTask() { 6880 try { 6881 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 6882 } catch (RemoteException e) { 6883 } 6884 } 6885 6886 /** 6887 * Allow the user to switch away from the current task. 6888 * 6889 * Called to end the mode started by {@link Activity#startLockTask}. This 6890 * can only be called by activities that have successfully called 6891 * startLockTask previously. 6892 * 6893 * This will allow the user to exit this app and move onto other activities. 6894 * <p>Note: This method should only be called when the activity is user-facing. That is, 6895 * between onResume() and onPause(). 6896 * <p>Note: If there are other tasks below this one that are also locked then calling this 6897 * method will immediately finish this task and resume the previous locked one, remaining in 6898 * lockTask mode. 6899 * 6900 * @see android.R.attr#lockTaskMode 6901 * @see ActivityManager#getLockTaskModeState() 6902 */ 6903 public void stopLockTask() { 6904 try { 6905 ActivityManagerNative.getDefault().stopLockTaskMode(); 6906 } catch (RemoteException e) { 6907 } 6908 } 6909 6910 /** 6911 * Shows the user the system defined message for telling the user how to exit 6912 * lock task mode. The task containing this activity must be in lock task mode at the time 6913 * of this call for the message to be displayed. 6914 */ 6915 public void showLockTaskEscapeMessage() { 6916 try { 6917 ActivityManagerNative.getDefault().showLockTaskEscapeMessage(mToken); 6918 } catch (RemoteException e) { 6919 } 6920 } 6921 6922 /** 6923 * Check whether the caption on freeform windows is displayed directly on the content. 6924 * 6925 * @return True if caption is displayed on content, false if it pushes the content down. 6926 * 6927 * @see {@link #setOverlayWithDecorCaptionEnabled(boolean)} 6928 */ 6929 public boolean isOverlayWithDecorCaptionEnabled() { 6930 return mWindow.isOverlayWithDecorCaptionEnabled(); 6931 } 6932 6933 /** 6934 * Set whether the caption should displayed directly on the content rather than push it down. 6935 * 6936 * This affects only freeform windows since they display the caption and only the main 6937 * window of the activity. The caption is used to drag the window around and also shows 6938 * maximize and close action buttons. 6939 */ 6940 public void setOverlayWithDecorCaptionEnabled(boolean enabled) { 6941 mWindow.setOverlayWithDecorCaptionEnabled(enabled); 6942 } 6943 6944 /** 6945 * Interface for informing a translucent {@link Activity} once all visible activities below it 6946 * have completed drawing. This is necessary only after an {@link Activity} has been made 6947 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 6948 * translucent again following a call to {@link 6949 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6950 * ActivityOptions)} 6951 * 6952 * @hide 6953 */ 6954 @SystemApi 6955 public interface TranslucentConversionListener { 6956 /** 6957 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 6958 * below the top one have been redrawn. Following this callback it is safe to make the top 6959 * Activity translucent because the underlying Activity has been drawn. 6960 * 6961 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 6962 * occurred waiting for the Activity to complete drawing. 6963 * 6964 * @see Activity#convertFromTranslucent() 6965 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 6966 */ 6967 public void onTranslucentConversionComplete(boolean drawComplete); 6968 } 6969 6970 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 6971 mHasCurrentPermissionsRequest = false; 6972 // If the package installer crashed we may have not data - best effort. 6973 String[] permissions = (data != null) ? data.getStringArrayExtra( 6974 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6975 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6976 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6977 onRequestPermissionsResult(requestCode, permissions, grantResults); 6978 } 6979 6980 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 6981 Fragment fragment) { 6982 // If the package installer crashed we may have not data - best effort. 6983 String[] permissions = (data != null) ? data.getStringArrayExtra( 6984 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6985 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6986 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6987 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 6988 } 6989 6990 class HostCallbacks extends FragmentHostCallback<Activity> { 6991 public HostCallbacks() { 6992 super(Activity.this /*activity*/); 6993 } 6994 6995 @Override 6996 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6997 Activity.this.dump(prefix, fd, writer, args); 6998 } 6999 7000 @Override 7001 public boolean onShouldSaveFragmentState(Fragment fragment) { 7002 return !isFinishing(); 7003 } 7004 7005 @Override 7006 public LayoutInflater onGetLayoutInflater() { 7007 final LayoutInflater result = Activity.this.getLayoutInflater(); 7008 if (onUseFragmentManagerInflaterFactory()) { 7009 return result.cloneInContext(Activity.this); 7010 } 7011 return result; 7012 } 7013 7014 @Override 7015 public boolean onUseFragmentManagerInflaterFactory() { 7016 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 7017 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 7018 } 7019 7020 @Override 7021 public Activity onGetHost() { 7022 return Activity.this; 7023 } 7024 7025 @Override 7026 public void onInvalidateOptionsMenu() { 7027 Activity.this.invalidateOptionsMenu(); 7028 } 7029 7030 @Override 7031 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 7032 Bundle options) { 7033 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 7034 } 7035 7036 @Override 7037 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 7038 int requestCode) { 7039 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 7040 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 7041 startActivityForResult(who, intent, requestCode, null); 7042 } 7043 7044 @Override 7045 public boolean onHasWindowAnimations() { 7046 return getWindow() != null; 7047 } 7048 7049 @Override 7050 public int onGetWindowAnimations() { 7051 final Window w = getWindow(); 7052 return (w == null) ? 0 : w.getAttributes().windowAnimations; 7053 } 7054 7055 @Override 7056 public void onAttachFragment(Fragment fragment) { 7057 Activity.this.onAttachFragment(fragment); 7058 } 7059 7060 @Nullable 7061 @Override 7062 public View onFindViewById(int id) { 7063 return Activity.this.findViewById(id); 7064 } 7065 7066 @Override 7067 public boolean onHasView() { 7068 final Window w = getWindow(); 7069 return (w != null && w.peekDecorView() != null); 7070 } 7071 } 7072} 7073