Activity.java revision 5beb2617f91e28c45917ea48109b8350f4e62140
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 android.annotation.CallSuper; 20import android.annotation.DrawableRes; 21import android.annotation.IdRes; 22import android.annotation.IntDef; 23import android.annotation.LayoutRes; 24import android.annotation.MainThread; 25import android.annotation.NonNull; 26import android.annotation.Nullable; 27import android.annotation.RequiresPermission; 28import android.annotation.StyleRes; 29import android.os.PersistableBundle; 30import android.transition.Scene; 31import android.transition.TransitionManager; 32import android.util.ArrayMap; 33import android.util.SuperNotCalledException; 34import android.view.Window.WindowControllerCallback; 35import android.widget.Toolbar; 36 37import com.android.internal.app.IVoiceInteractor; 38import com.android.internal.app.WindowDecorActionBar; 39import com.android.internal.app.ToolbarActionBar; 40 41import android.annotation.SystemApi; 42import android.app.admin.DevicePolicyManager; 43import android.app.assist.AssistContent; 44import android.content.ComponentCallbacks2; 45import android.content.ComponentName; 46import android.content.ContentResolver; 47import android.content.Context; 48import android.content.CursorLoader; 49import android.content.IIntentSender; 50import android.content.Intent; 51import android.content.IntentSender; 52import android.content.SharedPreferences; 53import android.content.pm.ActivityInfo; 54import android.content.pm.PackageManager; 55import android.content.pm.PackageManager.NameNotFoundException; 56import android.content.res.Configuration; 57import android.content.res.Resources; 58import android.content.res.TypedArray; 59import android.database.Cursor; 60import android.graphics.Bitmap; 61import android.graphics.Canvas; 62import android.graphics.drawable.Drawable; 63import android.graphics.Rect; 64import android.media.AudioManager; 65import android.media.session.MediaController; 66import android.net.Uri; 67import android.os.Build; 68import android.os.Bundle; 69import android.os.Handler; 70import android.os.IBinder; 71import android.os.Looper; 72import android.os.Parcelable; 73import android.os.RemoteException; 74import android.os.StrictMode; 75import android.os.UserHandle; 76import android.text.Selection; 77import android.text.SpannableStringBuilder; 78import android.text.TextUtils; 79import android.text.method.TextKeyListener; 80import android.util.AttributeSet; 81import android.util.EventLog; 82import android.util.Log; 83import android.util.PrintWriterPrinter; 84import android.util.Slog; 85import android.util.SparseArray; 86import android.view.ActionMode; 87import android.view.ContextMenu; 88import android.view.ContextMenu.ContextMenuInfo; 89import android.view.ContextThemeWrapper; 90import android.view.KeyEvent; 91import android.view.LayoutInflater; 92import android.view.Menu; 93import android.view.MenuInflater; 94import android.view.MenuItem; 95import android.view.MotionEvent; 96import com.android.internal.policy.PhoneWindow; 97import android.view.SearchEvent; 98import android.view.View; 99import android.view.View.OnCreateContextMenuListener; 100import android.view.ViewGroup; 101import android.view.ViewGroup.LayoutParams; 102import android.view.ViewManager; 103import android.view.ViewRootImpl; 104import android.view.Window; 105import android.view.WindowManager; 106import android.view.WindowManagerGlobal; 107import android.view.accessibility.AccessibilityEvent; 108import android.widget.AdapterView; 109 110import java.io.FileDescriptor; 111import java.io.PrintWriter; 112import java.lang.annotation.Retention; 113import java.lang.annotation.RetentionPolicy; 114import java.util.ArrayList; 115import java.util.HashMap; 116import java.util.List; 117 118/** 119 * An activity is a single, focused thing that the user can do. Almost all 120 * activities interact with the user, so the Activity class takes care of 121 * creating a window for you in which you can place your UI with 122 * {@link #setContentView}. While activities are often presented to the user 123 * as full-screen windows, they can also be used in other ways: as floating 124 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 125 * or embedded inside of another activity (using {@link ActivityGroup}). 126 * 127 * There are two methods almost all subclasses of Activity will implement: 128 * 129 * <ul> 130 * <li> {@link #onCreate} is where you initialize your activity. Most 131 * importantly, here you will usually call {@link #setContentView(int)} 132 * with a layout resource defining your UI, and using {@link #findViewById} 133 * to retrieve the widgets in that UI that you need to interact with 134 * programmatically. 135 * 136 * <li> {@link #onPause} is where you deal with the user leaving your 137 * activity. Most importantly, any changes made by the user should at this 138 * point be committed (usually to the 139 * {@link android.content.ContentProvider} holding the data). 140 * </ul> 141 * 142 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 143 * activity classes must have a corresponding 144 * {@link android.R.styleable#AndroidManifestActivity <activity>} 145 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 146 * 147 * <p>Topics covered here: 148 * <ol> 149 * <li><a href="#Fragments">Fragments</a> 150 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 151 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 152 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 153 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 154 * <li><a href="#Permissions">Permissions</a> 155 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 156 * </ol> 157 * 158 * <div class="special reference"> 159 * <h3>Developer Guides</h3> 160 * <p>The Activity class is an important part of an application's overall lifecycle, 161 * and the way activities are launched and put together is a fundamental 162 * part of the platform's application model. For a detailed perspective on the structure of an 163 * Android application and how activities behave, please read the 164 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 165 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 166 * developer guides.</p> 167 * 168 * <p>You can also find a detailed discussion about how to create activities in the 169 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 170 * developer guide.</p> 171 * </div> 172 * 173 * <a name="Fragments"></a> 174 * <h3>Fragments</h3> 175 * 176 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 177 * implementations can make use of the {@link Fragment} class to better 178 * modularize their code, build more sophisticated user interfaces for larger 179 * screens, and help scale their application between small and large screens. 180 * 181 * <a name="ActivityLifecycle"></a> 182 * <h3>Activity Lifecycle</h3> 183 * 184 * <p>Activities in the system are managed as an <em>activity stack</em>. 185 * When a new activity is started, it is placed on the top of the stack 186 * and becomes the running activity -- the previous activity always remains 187 * below it in the stack, and will not come to the foreground again until 188 * the new activity exits.</p> 189 * 190 * <p>An activity has essentially four states:</p> 191 * <ul> 192 * <li> If an activity in the foreground of the screen (at the top of 193 * the stack), 194 * it is <em>active</em> or <em>running</em>. </li> 195 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 196 * or transparent activity has focus on top of your activity), it 197 * is <em>paused</em>. A paused activity is completely alive (it 198 * maintains all state and member information and remains attached to 199 * the window manager), but can be killed by the system in extreme 200 * low memory situations. 201 * <li>If an activity is completely obscured by another activity, 202 * it is <em>stopped</em>. It still retains all state and member information, 203 * however, it is no longer visible to the user so its window is hidden 204 * and it will often be killed by the system when memory is needed 205 * elsewhere.</li> 206 * <li>If an activity is paused or stopped, the system can drop the activity 207 * from memory by either asking it to finish, or simply killing its 208 * process. When it is displayed again to the user, it must be 209 * completely restarted and restored to its previous state.</li> 210 * </ul> 211 * 212 * <p>The following diagram shows the important state paths of an Activity. 213 * The square rectangles represent callback methods you can implement to 214 * perform operations when the Activity moves between states. The colored 215 * ovals are major states the Activity can be in.</p> 216 * 217 * <p><img src="../../../images/activity_lifecycle.png" 218 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 219 * 220 * <p>There are three key loops you may be interested in monitoring within your 221 * activity: 222 * 223 * <ul> 224 * <li>The <b>entire lifetime</b> of an activity happens between the first call 225 * to {@link android.app.Activity#onCreate} through to a single final call 226 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 227 * of "global" state in onCreate(), and release all remaining resources in 228 * onDestroy(). For example, if it has a thread running in the background 229 * to download data from the network, it may create that thread in onCreate() 230 * and then stop the thread in onDestroy(). 231 * 232 * <li>The <b>visible lifetime</b> of an activity happens between a call to 233 * {@link android.app.Activity#onStart} until a corresponding call to 234 * {@link android.app.Activity#onStop}. During this time the user can see the 235 * activity on-screen, though it may not be in the foreground and interacting 236 * with the user. Between these two methods you can maintain resources that 237 * are needed to show the activity to the user. For example, you can register 238 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 239 * that impact your UI, and unregister it in onStop() when the user no 240 * longer sees what you are displaying. The onStart() and onStop() methods 241 * can be called multiple times, as the activity becomes visible and hidden 242 * to the user. 243 * 244 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 245 * {@link android.app.Activity#onResume} until a corresponding call to 246 * {@link android.app.Activity#onPause}. During this time the activity is 247 * in front of all other activities and interacting with the user. An activity 248 * can frequently go between the resumed and paused states -- for example when 249 * the device goes to sleep, when an activity result is delivered, when a new 250 * intent is delivered -- so the code in these methods should be fairly 251 * lightweight. 252 * </ul> 253 * 254 * <p>The entire lifecycle of an activity is defined by the following 255 * Activity methods. All of these are hooks that you can override 256 * to do appropriate work when the activity changes state. All 257 * activities will implement {@link android.app.Activity#onCreate} 258 * to do their initial setup; many will also implement 259 * {@link android.app.Activity#onPause} to commit changes to data and 260 * otherwise prepare to stop interacting with the user. You should always 261 * call up to your superclass when implementing these methods.</p> 262 * 263 * </p> 264 * <pre class="prettyprint"> 265 * public class Activity extends ApplicationContext { 266 * protected void onCreate(Bundle savedInstanceState); 267 * 268 * protected void onStart(); 269 * 270 * protected void onRestart(); 271 * 272 * protected void onResume(); 273 * 274 * protected void onPause(); 275 * 276 * protected void onStop(); 277 * 278 * protected void onDestroy(); 279 * } 280 * </pre> 281 * 282 * <p>In general the movement through an activity's lifecycle looks like 283 * this:</p> 284 * 285 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 286 * <colgroup align="left" span="3" /> 287 * <colgroup align="left" /> 288 * <colgroup align="center" /> 289 * <colgroup align="center" /> 290 * 291 * <thead> 292 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 293 * </thead> 294 * 295 * <tbody> 296 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 297 * <td>Called when the activity is first created. 298 * This is where you should do all of your normal static set up: 299 * create views, bind data to lists, etc. This method also 300 * provides you with a Bundle containing the activity's previously 301 * frozen state, if there was one. 302 * <p>Always followed by <code>onStart()</code>.</td> 303 * <td align="center">No</td> 304 * <td align="center"><code>onStart()</code></td> 305 * </tr> 306 * 307 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 308 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 309 * <td>Called after your activity has been stopped, prior to it being 310 * started again. 311 * <p>Always followed by <code>onStart()</code></td> 312 * <td align="center">No</td> 313 * <td align="center"><code>onStart()</code></td> 314 * </tr> 315 * 316 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 317 * <td>Called when the activity is becoming visible to the user. 318 * <p>Followed by <code>onResume()</code> if the activity comes 319 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 320 * <td align="center">No</td> 321 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 322 * </tr> 323 * 324 * <tr><td rowspan="2" style="border-left: none;"> </td> 325 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 326 * <td>Called when the activity will start 327 * interacting with the user. At this point your activity is at 328 * the top of the activity stack, with user input going to it. 329 * <p>Always followed by <code>onPause()</code>.</td> 330 * <td align="center">No</td> 331 * <td align="center"><code>onPause()</code></td> 332 * </tr> 333 * 334 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 335 * <td>Called when the system is about to start resuming a previous 336 * activity. This is typically used to commit unsaved changes to 337 * persistent data, stop animations and other things that may be consuming 338 * CPU, etc. Implementations of this method must be very quick because 339 * the next activity will not be resumed until this method returns. 340 * <p>Followed by either <code>onResume()</code> if the activity 341 * returns back to the front, or <code>onStop()</code> if it becomes 342 * invisible to the user.</td> 343 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 344 * <td align="center"><code>onResume()</code> or<br> 345 * <code>onStop()</code></td> 346 * </tr> 347 * 348 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 349 * <td>Called when the activity is no longer visible to the user, because 350 * another activity has been resumed and is covering this one. This 351 * may happen either because a new activity is being started, an existing 352 * one is being brought in front of this one, or this one is being 353 * destroyed. 354 * <p>Followed by either <code>onRestart()</code> if 355 * this activity is coming back to interact with the user, or 356 * <code>onDestroy()</code> if this activity is going away.</td> 357 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 358 * <td align="center"><code>onRestart()</code> or<br> 359 * <code>onDestroy()</code></td> 360 * </tr> 361 * 362 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 363 * <td>The final call you receive before your 364 * activity is destroyed. This can happen either because the 365 * activity is finishing (someone called {@link Activity#finish} on 366 * it, or because the system is temporarily destroying this 367 * instance of the activity to save space. You can distinguish 368 * between these two scenarios with the {@link 369 * Activity#isFinishing} method.</td> 370 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 371 * <td align="center"><em>nothing</em></td> 372 * </tr> 373 * </tbody> 374 * </table> 375 * 376 * <p>Note the "Killable" column in the above table -- for those methods that 377 * are marked as being killable, after that method returns the process hosting the 378 * activity may be killed by the system <em>at any time</em> without another line 379 * of its code being executed. Because of this, you should use the 380 * {@link #onPause} method to write any persistent data (such as user edits) 381 * to storage. In addition, the method 382 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 383 * in such a background state, allowing you to save away any dynamic instance 384 * state in your activity into the given Bundle, to be later received in 385 * {@link #onCreate} if the activity needs to be re-created. 386 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 387 * section for more information on how the lifecycle of a process is tied 388 * to the activities it is hosting. Note that it is important to save 389 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 390 * because the latter is not part of the lifecycle callbacks, so will not 391 * be called in every situation as described in its documentation.</p> 392 * 393 * <p class="note">Be aware that these semantics will change slightly between 394 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 395 * vs. those targeting prior platforms. Starting with Honeycomb, an application 396 * is not in the killable state until its {@link #onStop} has returned. This 397 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 398 * safely called after {@link #onPause()} and allows and application to safely 399 * wait until {@link #onStop()} to save persistent state.</p> 400 * 401 * <p>For those methods that are not marked as being killable, the activity's 402 * process will not be killed by the system starting from the time the method 403 * is called and continuing after it returns. Thus an activity is in the killable 404 * state, for example, between after <code>onPause()</code> to the start of 405 * <code>onResume()</code>.</p> 406 * 407 * <a name="ConfigurationChanges"></a> 408 * <h3>Configuration Changes</h3> 409 * 410 * <p>If the configuration of the device (as defined by the 411 * {@link Configuration Resources.Configuration} class) changes, 412 * then anything displaying a user interface will need to update to match that 413 * configuration. Because Activity is the primary mechanism for interacting 414 * with the user, it includes special support for handling configuration 415 * changes.</p> 416 * 417 * <p>Unless you specify otherwise, a configuration change (such as a change 418 * in screen orientation, language, input devices, etc) will cause your 419 * current activity to be <em>destroyed</em>, going through the normal activity 420 * lifecycle process of {@link #onPause}, 421 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 422 * had been in the foreground or visible to the user, once {@link #onDestroy} is 423 * called in that instance then a new instance of the activity will be 424 * created, with whatever savedInstanceState the previous instance had generated 425 * from {@link #onSaveInstanceState}.</p> 426 * 427 * <p>This is done because any application resource, 428 * including layout files, can change based on any configuration value. Thus 429 * the only safe way to handle a configuration change is to re-retrieve all 430 * resources, including layouts, drawables, and strings. Because activities 431 * must already know how to save their state and re-create themselves from 432 * that state, this is a convenient way to have an activity restart itself 433 * with a new configuration.</p> 434 * 435 * <p>In some special cases, you may want to bypass restarting of your 436 * activity based on one or more types of configuration changes. This is 437 * done with the {@link android.R.attr#configChanges android:configChanges} 438 * attribute in its manifest. For any types of configuration changes you say 439 * that you handle there, you will receive a call to your current activity's 440 * {@link #onConfigurationChanged} method instead of being restarted. If 441 * a configuration change involves any that you do not handle, however, the 442 * activity will still be restarted and {@link #onConfigurationChanged} 443 * will not be called.</p> 444 * 445 * <a name="StartingActivities"></a> 446 * <h3>Starting Activities and Getting Results</h3> 447 * 448 * <p>The {@link android.app.Activity#startActivity} 449 * method is used to start a 450 * new activity, which will be placed at the top of the activity stack. It 451 * takes a single argument, an {@link android.content.Intent Intent}, 452 * which describes the activity 453 * to be executed.</p> 454 * 455 * <p>Sometimes you want to get a result back from an activity when it 456 * ends. For example, you may start an activity that lets the user pick 457 * a person in a list of contacts; when it ends, it returns the person 458 * that was selected. To do this, you call the 459 * {@link android.app.Activity#startActivityForResult(Intent, int)} 460 * version with a second integer parameter identifying the call. The result 461 * will come back through your {@link android.app.Activity#onActivityResult} 462 * method.</p> 463 * 464 * <p>When an activity exits, it can call 465 * {@link android.app.Activity#setResult(int)} 466 * to return data back to its parent. It must always supply a result code, 467 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 468 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 469 * return back an Intent containing any additional data it wants. All of this 470 * information appears back on the 471 * parent's <code>Activity.onActivityResult()</code>, along with the integer 472 * identifier it originally supplied.</p> 473 * 474 * <p>If a child activity fails for any reason (such as crashing), the parent 475 * activity will receive a result with the code RESULT_CANCELED.</p> 476 * 477 * <pre class="prettyprint"> 478 * public class MyActivity extends Activity { 479 * ... 480 * 481 * static final int PICK_CONTACT_REQUEST = 0; 482 * 483 * public boolean onKeyDown(int keyCode, KeyEvent event) { 484 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 485 * // When the user center presses, let them pick a contact. 486 * startActivityForResult( 487 * new Intent(Intent.ACTION_PICK, 488 * new Uri("content://contacts")), 489 * PICK_CONTACT_REQUEST); 490 * return true; 491 * } 492 * return false; 493 * } 494 * 495 * protected void onActivityResult(int requestCode, int resultCode, 496 * Intent data) { 497 * if (requestCode == PICK_CONTACT_REQUEST) { 498 * if (resultCode == RESULT_OK) { 499 * // A contact was picked. Here we will just display it 500 * // to the user. 501 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 502 * } 503 * } 504 * } 505 * } 506 * </pre> 507 * 508 * <a name="SavingPersistentState"></a> 509 * <h3>Saving Persistent State</h3> 510 * 511 * <p>There are generally two kinds of persistent state than an activity 512 * will deal with: shared document-like data (typically stored in a SQLite 513 * database using a {@linkplain android.content.ContentProvider content provider}) 514 * and internal state such as user preferences.</p> 515 * 516 * <p>For content provider data, we suggest that activities use a 517 * "edit in place" user model. That is, any edits a user makes are effectively 518 * made immediately without requiring an additional confirmation step. 519 * Supporting this model is generally a simple matter of following two rules:</p> 520 * 521 * <ul> 522 * <li> <p>When creating a new document, the backing database entry or file for 523 * it is created immediately. For example, if the user chooses to write 524 * a new e-mail, a new entry for that e-mail is created as soon as they 525 * start entering data, so that if they go to any other activity after 526 * that point this e-mail will now appear in the list of drafts.</p> 527 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 528 * commit to the backing content provider or file any changes the user 529 * has made. This ensures that those changes will be seen by any other 530 * activity that is about to run. You will probably want to commit 531 * your data even more aggressively at key times during your 532 * activity's lifecycle: for example before starting a new 533 * activity, before finishing your own activity, when the user 534 * switches between input fields, etc.</p> 535 * </ul> 536 * 537 * <p>This model is designed to prevent data loss when a user is navigating 538 * between activities, and allows the system to safely kill an activity (because 539 * system resources are needed somewhere else) at any time after it has been 540 * paused. Note this implies 541 * that the user pressing BACK from your activity does <em>not</em> 542 * mean "cancel" -- it means to leave the activity with its current contents 543 * saved away. Canceling edits in an activity must be provided through 544 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 545 * 546 * <p>See the {@linkplain android.content.ContentProvider content package} for 547 * more information about content providers. These are a key aspect of how 548 * different activities invoke and propagate data between themselves.</p> 549 * 550 * <p>The Activity class also provides an API for managing internal persistent state 551 * associated with an activity. This can be used, for example, to remember 552 * the user's preferred initial display in a calendar (day view or week view) 553 * or the user's default home page in a web browser.</p> 554 * 555 * <p>Activity persistent state is managed 556 * with the method {@link #getPreferences}, 557 * allowing you to retrieve and 558 * modify a set of name/value pairs associated with the activity. To use 559 * preferences that are shared across multiple application components 560 * (activities, receivers, services, providers), you can use the underlying 561 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 562 * to retrieve a preferences 563 * object stored under a specific name. 564 * (Note that it is not possible to share settings data across application 565 * packages -- for that you will need a content provider.)</p> 566 * 567 * <p>Here is an excerpt from a calendar activity that stores the user's 568 * preferred view mode in its persistent settings:</p> 569 * 570 * <pre class="prettyprint"> 571 * public class CalendarActivity extends Activity { 572 * ... 573 * 574 * static final int DAY_VIEW_MODE = 0; 575 * static final int WEEK_VIEW_MODE = 1; 576 * 577 * private SharedPreferences mPrefs; 578 * private int mCurViewMode; 579 * 580 * protected void onCreate(Bundle savedInstanceState) { 581 * super.onCreate(savedInstanceState); 582 * 583 * SharedPreferences mPrefs = getSharedPreferences(); 584 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 585 * } 586 * 587 * protected void onPause() { 588 * super.onPause(); 589 * 590 * SharedPreferences.Editor ed = mPrefs.edit(); 591 * ed.putInt("view_mode", mCurViewMode); 592 * ed.commit(); 593 * } 594 * } 595 * </pre> 596 * 597 * <a name="Permissions"></a> 598 * <h3>Permissions</h3> 599 * 600 * <p>The ability to start a particular Activity can be enforced when it is 601 * declared in its 602 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 603 * tag. By doing so, other applications will need to declare a corresponding 604 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 605 * element in their own manifest to be able to start that activity. 606 * 607 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 608 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 609 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 610 * Activity access to the specific URIs in the Intent. Access will remain 611 * until the Activity has finished (it will remain across the hosting 612 * process being killed and other temporary destruction). As of 613 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 614 * was already created and a new Intent is being delivered to 615 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 616 * to the existing ones it holds. 617 * 618 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 619 * document for more information on permissions and security in general. 620 * 621 * <a name="ProcessLifecycle"></a> 622 * <h3>Process Lifecycle</h3> 623 * 624 * <p>The Android system attempts to keep application process around for as 625 * long as possible, but eventually will need to remove old processes when 626 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 627 * Lifecycle</a>, the decision about which process to remove is intimately 628 * tied to the state of the user's interaction with it. In general, there 629 * are four states a process can be in based on the activities running in it, 630 * listed here in order of importance. The system will kill less important 631 * processes (the last ones) before it resorts to killing more important 632 * processes (the first ones). 633 * 634 * <ol> 635 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 636 * that the user is currently interacting with) is considered the most important. 637 * Its process will only be killed as a last resort, if it uses more memory 638 * than is available on the device. Generally at this point the device has 639 * reached a memory paging state, so this is required in order to keep the user 640 * interface responsive. 641 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 642 * but not in the foreground, such as one sitting behind a foreground dialog) 643 * is considered extremely important and will not be killed unless that is 644 * required to keep the foreground activity running. 645 * <li> <p>A <b>background activity</b> (an activity that is not visible to 646 * the user and has been paused) is no longer critical, so the system may 647 * safely kill its process to reclaim memory for other foreground or 648 * visible processes. If its process needs to be killed, when the user navigates 649 * back to the activity (making it visible on the screen again), its 650 * {@link #onCreate} method will be called with the savedInstanceState it had previously 651 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 652 * state as the user last left it. 653 * <li> <p>An <b>empty process</b> is one hosting no activities or other 654 * application components (such as {@link Service} or 655 * {@link android.content.BroadcastReceiver} classes). These are killed very 656 * quickly by the system as memory becomes low. For this reason, any 657 * background operation you do outside of an activity must be executed in the 658 * context of an activity BroadcastReceiver or Service to ensure that the system 659 * knows it needs to keep your process around. 660 * </ol> 661 * 662 * <p>Sometimes an Activity may need to do a long-running operation that exists 663 * independently of the activity lifecycle itself. An example may be a camera 664 * application that allows you to upload a picture to a web site. The upload 665 * may take a long time, and the application should allow the user to leave 666 * the application will it is executing. To accomplish this, your Activity 667 * should start a {@link Service} in which the upload takes place. This allows 668 * the system to properly prioritize your process (considering it to be more 669 * important than other non-visible applications) for the duration of the 670 * upload, independent of whether the original activity is paused, stopped, 671 * or finished. 672 */ 673public class Activity extends ContextThemeWrapper 674 implements LayoutInflater.Factory2, 675 Window.Callback, KeyEvent.Callback, 676 OnCreateContextMenuListener, ComponentCallbacks2, 677 Window.OnWindowDismissedCallback, WindowControllerCallback { 678 private static final String TAG = "Activity"; 679 private static final boolean DEBUG_LIFECYCLE = false; 680 681 /** Standard activity result: operation canceled. */ 682 public static final int RESULT_CANCELED = 0; 683 /** Standard activity result: operation succeeded. */ 684 public static final int RESULT_OK = -1; 685 /** Start of user-defined activity results. */ 686 public static final int RESULT_FIRST_USER = 1; 687 688 /** @hide Task isn't finished when activity is finished */ 689 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 690 /** 691 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 692 * past behavior the task is also removed from recents. 693 */ 694 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 695 /** 696 * @hide Task is finished along with the finishing activity, but it is not removed from 697 * recents. 698 */ 699 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 700 701 static final String FRAGMENTS_TAG = "android:fragments"; 702 703 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 704 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 705 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 706 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 707 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 708 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 709 "android:hasCurrentPermissionsRequest"; 710 711 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 712 713 private static class ManagedDialog { 714 Dialog mDialog; 715 Bundle mArgs; 716 } 717 private SparseArray<ManagedDialog> mManagedDialogs; 718 719 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 720 private Instrumentation mInstrumentation; 721 private IBinder mToken; 722 private int mIdent; 723 /*package*/ String mEmbeddedID; 724 private Application mApplication; 725 /*package*/ Intent mIntent; 726 /*package*/ String mReferrer; 727 private ComponentName mComponent; 728 /*package*/ ActivityInfo mActivityInfo; 729 /*package*/ ActivityThread mMainThread; 730 Activity mParent; 731 boolean mCalled; 732 /*package*/ boolean mResumed; 733 private boolean mStopped; 734 boolean mFinished; 735 boolean mStartedActivity; 736 private boolean mDestroyed; 737 private boolean mDoReportFullyDrawn = true; 738 /** true if the activity is going through a transient pause */ 739 /*package*/ boolean mTemporaryPause = false; 740 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 741 /*package*/ boolean mChangingConfigurations = false; 742 /*package*/ int mConfigChangeFlags; 743 /*package*/ Configuration mCurrentConfig; 744 private SearchManager mSearchManager; 745 private MenuInflater mMenuInflater; 746 747 static final class NonConfigurationInstances { 748 Object activity; 749 HashMap<String, Object> children; 750 List<Fragment> fragments; 751 ArrayMap<String, LoaderManager> loaders; 752 VoiceInteractor voiceInteractor; 753 } 754 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 755 756 private Window mWindow; 757 758 private WindowManager mWindowManager; 759 /*package*/ View mDecor = null; 760 /*package*/ boolean mWindowAdded = false; 761 /*package*/ boolean mVisibleFromServer = false; 762 /*package*/ boolean mVisibleFromClient = true; 763 /*package*/ ActionBar mActionBar = null; 764 private boolean mEnableDefaultActionBarUp; 765 766 private VoiceInteractor mVoiceInteractor; 767 768 private CharSequence mTitle; 769 private int mTitleColor = 0; 770 771 // we must have a handler before the FragmentController is constructed 772 final Handler mHandler = new Handler(); 773 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 774 775 // Most recent call to requestVisibleBehind(). 776 boolean mVisibleBehind; 777 778 private static final class ManagedCursor { 779 ManagedCursor(Cursor cursor) { 780 mCursor = cursor; 781 mReleased = false; 782 mUpdated = false; 783 } 784 785 private final Cursor mCursor; 786 private boolean mReleased; 787 private boolean mUpdated; 788 } 789 private final ArrayList<ManagedCursor> mManagedCursors = 790 new ArrayList<ManagedCursor>(); 791 792 // protected by synchronized (this) 793 int mResultCode = RESULT_CANCELED; 794 Intent mResultData = null; 795 796 private TranslucentConversionListener mTranslucentCallback; 797 private boolean mChangeCanvasToTranslucent; 798 799 private SearchEvent mSearchEvent; 800 801 private boolean mTitleReady = false; 802 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 803 804 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 805 private SpannableStringBuilder mDefaultKeySsb = null; 806 807 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 808 809 @SuppressWarnings("unused") 810 private final Object mInstanceTracker = StrictMode.trackActivity(this); 811 812 private Thread mUiThread; 813 814 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 815 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 816 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 817 818 private boolean mHasCurrentPermissionsRequest; 819 private boolean mEatKeyUpEvent; 820 821 /** Return the intent that started this activity. */ 822 public Intent getIntent() { 823 return mIntent; 824 } 825 826 /** 827 * Change the intent returned by {@link #getIntent}. This holds a 828 * reference to the given intent; it does not copy it. Often used in 829 * conjunction with {@link #onNewIntent}. 830 * 831 * @param newIntent The new Intent object to return from getIntent 832 * 833 * @see #getIntent 834 * @see #onNewIntent 835 */ 836 public void setIntent(Intent newIntent) { 837 mIntent = newIntent; 838 } 839 840 /** Return the application that owns this activity. */ 841 public final Application getApplication() { 842 return mApplication; 843 } 844 845 /** Is this activity embedded inside of another activity? */ 846 public final boolean isChild() { 847 return mParent != null; 848 } 849 850 /** Return the parent activity if this view is an embedded child. */ 851 public final Activity getParent() { 852 return mParent; 853 } 854 855 /** Retrieve the window manager for showing custom windows. */ 856 public WindowManager getWindowManager() { 857 return mWindowManager; 858 } 859 860 /** 861 * Retrieve the current {@link android.view.Window} for the activity. 862 * This can be used to directly access parts of the Window API that 863 * are not available through Activity/Screen. 864 * 865 * @return Window The current window, or null if the activity is not 866 * visual. 867 */ 868 public Window getWindow() { 869 return mWindow; 870 } 871 872 /** 873 * Return the LoaderManager for this activity, creating it if needed. 874 */ 875 public LoaderManager getLoaderManager() { 876 return mFragments.getLoaderManager(); 877 } 878 879 /** 880 * Calls {@link android.view.Window#getCurrentFocus} on the 881 * Window of this Activity to return the currently focused view. 882 * 883 * @return View The current View with focus or null. 884 * 885 * @see #getWindow 886 * @see android.view.Window#getCurrentFocus 887 */ 888 @Nullable 889 public View getCurrentFocus() { 890 return mWindow != null ? mWindow.getCurrentFocus() : null; 891 } 892 893 /** 894 * Called when the activity is starting. This is where most initialization 895 * should go: calling {@link #setContentView(int)} to inflate the 896 * activity's UI, using {@link #findViewById} to programmatically interact 897 * with widgets in the UI, calling 898 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 899 * cursors for data being displayed, etc. 900 * 901 * <p>You can call {@link #finish} from within this function, in 902 * which case onDestroy() will be immediately called without any of the rest 903 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 904 * {@link #onPause}, etc) executing. 905 * 906 * <p><em>Derived classes must call through to the super class's 907 * implementation of this method. If they do not, an exception will be 908 * thrown.</em></p> 909 * 910 * @param savedInstanceState If the activity is being re-initialized after 911 * previously being shut down then this Bundle contains the data it most 912 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 913 * 914 * @see #onStart 915 * @see #onSaveInstanceState 916 * @see #onRestoreInstanceState 917 * @see #onPostCreate 918 */ 919 @MainThread 920 @CallSuper 921 protected void onCreate(@Nullable Bundle savedInstanceState) { 922 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 923 if (mLastNonConfigurationInstances != null) { 924 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 925 } 926 if (mActivityInfo.parentActivityName != null) { 927 if (mActionBar == null) { 928 mEnableDefaultActionBarUp = true; 929 } else { 930 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 931 } 932 } 933 if (savedInstanceState != null) { 934 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 935 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 936 ? mLastNonConfigurationInstances.fragments : null); 937 } 938 mFragments.dispatchCreate(); 939 getApplication().dispatchActivityCreated(this, savedInstanceState); 940 if (mVoiceInteractor != null) { 941 mVoiceInteractor.attachActivity(this); 942 } 943 mCalled = true; 944 } 945 946 /** 947 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 948 * the attribute {@link android.R.attr#persistableMode} set to 949 * <code>persistAcrossReboots</code>. 950 * 951 * @param savedInstanceState if the activity is being re-initialized after 952 * previously being shut down then this Bundle contains the data it most 953 * recently supplied in {@link #onSaveInstanceState}. 954 * <b><i>Note: Otherwise it is null.</i></b> 955 * @param persistentState if the activity is being re-initialized after 956 * previously being shut down or powered off then this Bundle contains the data it most 957 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 958 * <b><i>Note: Otherwise it is null.</i></b> 959 * 960 * @see #onCreate(android.os.Bundle) 961 * @see #onStart 962 * @see #onSaveInstanceState 963 * @see #onRestoreInstanceState 964 * @see #onPostCreate 965 */ 966 public void onCreate(@Nullable Bundle savedInstanceState, 967 @Nullable PersistableBundle persistentState) { 968 onCreate(savedInstanceState); 969 } 970 971 /** 972 * The hook for {@link ActivityThread} to restore the state of this activity. 973 * 974 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 975 * {@link #restoreManagedDialogs(android.os.Bundle)}. 976 * 977 * @param savedInstanceState contains the saved state 978 */ 979 final void performRestoreInstanceState(Bundle savedInstanceState) { 980 onRestoreInstanceState(savedInstanceState); 981 restoreManagedDialogs(savedInstanceState); 982 } 983 984 /** 985 * The hook for {@link ActivityThread} to restore the state of this activity. 986 * 987 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 988 * {@link #restoreManagedDialogs(android.os.Bundle)}. 989 * 990 * @param savedInstanceState contains the saved state 991 * @param persistentState contains the persistable saved state 992 */ 993 final void performRestoreInstanceState(Bundle savedInstanceState, 994 PersistableBundle persistentState) { 995 onRestoreInstanceState(savedInstanceState, persistentState); 996 if (savedInstanceState != null) { 997 restoreManagedDialogs(savedInstanceState); 998 } 999 } 1000 1001 /** 1002 * This method is called after {@link #onStart} when the activity is 1003 * being re-initialized from a previously saved state, given here in 1004 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1005 * to restore their state, but it is sometimes convenient to do it here 1006 * after all of the initialization has been done or to allow subclasses to 1007 * decide whether to use your default implementation. The default 1008 * implementation of this method performs a restore of any view state that 1009 * had previously been frozen by {@link #onSaveInstanceState}. 1010 * 1011 * <p>This method is called between {@link #onStart} and 1012 * {@link #onPostCreate}. 1013 * 1014 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1015 * 1016 * @see #onCreate 1017 * @see #onPostCreate 1018 * @see #onResume 1019 * @see #onSaveInstanceState 1020 */ 1021 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1022 if (mWindow != null) { 1023 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1024 if (windowState != null) { 1025 mWindow.restoreHierarchyState(windowState); 1026 } 1027 } 1028 } 1029 1030 /** 1031 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1032 * created with the attribute {@link android.R.attr#persistableMode} set to 1033 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1034 * came from the restored PersistableBundle first 1035 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1036 * 1037 * <p>This method is called between {@link #onStart} and 1038 * {@link #onPostCreate}. 1039 * 1040 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1041 * 1042 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1043 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1044 * 1045 * @see #onRestoreInstanceState(Bundle) 1046 * @see #onCreate 1047 * @see #onPostCreate 1048 * @see #onResume 1049 * @see #onSaveInstanceState 1050 */ 1051 public void onRestoreInstanceState(Bundle savedInstanceState, 1052 PersistableBundle persistentState) { 1053 if (savedInstanceState != null) { 1054 onRestoreInstanceState(savedInstanceState); 1055 } 1056 } 1057 1058 /** 1059 * Restore the state of any saved managed dialogs. 1060 * 1061 * @param savedInstanceState The bundle to restore from. 1062 */ 1063 private void restoreManagedDialogs(Bundle savedInstanceState) { 1064 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1065 if (b == null) { 1066 return; 1067 } 1068 1069 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1070 final int numDialogs = ids.length; 1071 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1072 for (int i = 0; i < numDialogs; i++) { 1073 final Integer dialogId = ids[i]; 1074 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1075 if (dialogState != null) { 1076 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1077 // so tell createDialog() not to do it, otherwise we get an exception 1078 final ManagedDialog md = new ManagedDialog(); 1079 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1080 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1081 if (md.mDialog != null) { 1082 mManagedDialogs.put(dialogId, md); 1083 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1084 md.mDialog.onRestoreInstanceState(dialogState); 1085 } 1086 } 1087 } 1088 } 1089 1090 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1091 final Dialog dialog = onCreateDialog(dialogId, args); 1092 if (dialog == null) { 1093 return null; 1094 } 1095 dialog.dispatchOnCreate(state); 1096 return dialog; 1097 } 1098 1099 private static String savedDialogKeyFor(int key) { 1100 return SAVED_DIALOG_KEY_PREFIX + key; 1101 } 1102 1103 private static String savedDialogArgsKeyFor(int key) { 1104 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1105 } 1106 1107 /** 1108 * Called when activity start-up is complete (after {@link #onStart} 1109 * and {@link #onRestoreInstanceState} have been called). Applications will 1110 * generally not implement this method; it is intended for system 1111 * classes to do final initialization after application code has run. 1112 * 1113 * <p><em>Derived classes must call through to the super class's 1114 * implementation of this method. If they do not, an exception will be 1115 * thrown.</em></p> 1116 * 1117 * @param savedInstanceState If the activity is being re-initialized after 1118 * previously being shut down then this Bundle contains the data it most 1119 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1120 * @see #onCreate 1121 */ 1122 @CallSuper 1123 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1124 if (!isChild()) { 1125 mTitleReady = true; 1126 onTitleChanged(getTitle(), getTitleColor()); 1127 } 1128 mCalled = true; 1129 } 1130 1131 /** 1132 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1133 * created with the attribute {@link android.R.attr#persistableMode} set to 1134 * <code>persistAcrossReboots</code>. 1135 * 1136 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1137 * @param persistentState The data caming from the PersistableBundle first 1138 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1139 * 1140 * @see #onCreate 1141 */ 1142 public void onPostCreate(@Nullable Bundle savedInstanceState, 1143 @Nullable PersistableBundle persistentState) { 1144 onPostCreate(savedInstanceState); 1145 } 1146 1147 /** 1148 * Called after {@link #onCreate} — or after {@link #onRestart} when 1149 * the activity had been stopped, but is now again being displayed to the 1150 * user. It will be followed by {@link #onResume}. 1151 * 1152 * <p><em>Derived classes must call through to the super class's 1153 * implementation of this method. If they do not, an exception will be 1154 * thrown.</em></p> 1155 * 1156 * @see #onCreate 1157 * @see #onStop 1158 * @see #onResume 1159 */ 1160 @CallSuper 1161 protected void onStart() { 1162 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1163 mCalled = true; 1164 1165 mFragments.doLoaderStart(); 1166 1167 getApplication().dispatchActivityStarted(this); 1168 } 1169 1170 /** 1171 * Called after {@link #onStop} when the current activity is being 1172 * re-displayed to the user (the user has navigated back to it). It will 1173 * be followed by {@link #onStart} and then {@link #onResume}. 1174 * 1175 * <p>For activities that are using raw {@link Cursor} objects (instead of 1176 * creating them through 1177 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1178 * this is usually the place 1179 * where the cursor should be requeried (because you had deactivated it in 1180 * {@link #onStop}. 1181 * 1182 * <p><em>Derived classes must call through to the super class's 1183 * implementation of this method. If they do not, an exception will be 1184 * thrown.</em></p> 1185 * 1186 * @see #onStop 1187 * @see #onStart 1188 * @see #onResume 1189 */ 1190 @CallSuper 1191 protected void onRestart() { 1192 mCalled = true; 1193 } 1194 1195 /** 1196 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1197 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1198 * to give the activity a hint that its state is no longer saved -- it will generally 1199 * be called after {@link #onSaveInstanceState} and prior to the activity being 1200 * resumed/started again. 1201 */ 1202 public void onStateNotSaved() { 1203 } 1204 1205 /** 1206 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1207 * {@link #onPause}, for your activity to start interacting with the user. 1208 * This is a good place to begin animations, open exclusive-access devices 1209 * (such as the camera), etc. 1210 * 1211 * <p>Keep in mind that onResume is not the best indicator that your activity 1212 * is visible to the user; a system window such as the keyguard may be in 1213 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1214 * activity is visible to the user (for example, to resume a game). 1215 * 1216 * <p><em>Derived classes must call through to the super class's 1217 * implementation of this method. If they do not, an exception will be 1218 * thrown.</em></p> 1219 * 1220 * @see #onRestoreInstanceState 1221 * @see #onRestart 1222 * @see #onPostResume 1223 * @see #onPause 1224 */ 1225 @CallSuper 1226 protected void onResume() { 1227 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1228 getApplication().dispatchActivityResumed(this); 1229 mActivityTransitionState.onResume(); 1230 mCalled = true; 1231 } 1232 1233 /** 1234 * Called when activity resume is complete (after {@link #onResume} has 1235 * been called). Applications will generally not implement this method; 1236 * it is intended for system classes to do final setup after application 1237 * resume code has run. 1238 * 1239 * <p><em>Derived classes must call through to the super class's 1240 * implementation of this method. If they do not, an exception will be 1241 * thrown.</em></p> 1242 * 1243 * @see #onResume 1244 */ 1245 @CallSuper 1246 protected void onPostResume() { 1247 final Window win = getWindow(); 1248 if (win != null) win.makeActive(); 1249 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1250 mCalled = true; 1251 } 1252 1253 /** 1254 * Check whether this activity is running as part of a voice interaction with the user. 1255 * If true, it should perform its interaction with the user through the 1256 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1257 */ 1258 public boolean isVoiceInteraction() { 1259 return mVoiceInteractor != null; 1260 } 1261 1262 /** 1263 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1264 * of a voice interaction. That is, returns true if this activity was directly 1265 * started by the voice interaction service as the initiation of a voice interaction. 1266 * Otherwise, for example if it was started by another activity while under voice 1267 * interaction, returns false. 1268 */ 1269 public boolean isVoiceInteractionRoot() { 1270 try { 1271 return mVoiceInteractor != null 1272 && ActivityManagerNative.getDefault().isRootVoiceInteraction(mToken); 1273 } catch (RemoteException e) { 1274 } 1275 return false; 1276 } 1277 1278 /** 1279 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1280 * interact with this activity. 1281 */ 1282 public VoiceInteractor getVoiceInteractor() { 1283 return mVoiceInteractor; 1284 } 1285 1286 /** 1287 * This is called for activities that set launchMode to "singleTop" in 1288 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1289 * flag when calling {@link #startActivity}. In either case, when the 1290 * activity is re-launched while at the top of the activity stack instead 1291 * of a new instance of the activity being started, onNewIntent() will be 1292 * called on the existing instance with the Intent that was used to 1293 * re-launch it. 1294 * 1295 * <p>An activity will always be paused before receiving a new intent, so 1296 * you can count on {@link #onResume} being called after this method. 1297 * 1298 * <p>Note that {@link #getIntent} still returns the original Intent. You 1299 * can use {@link #setIntent} to update it to this new Intent. 1300 * 1301 * @param intent The new intent that was started for the activity. 1302 * 1303 * @see #getIntent 1304 * @see #setIntent 1305 * @see #onResume 1306 */ 1307 protected void onNewIntent(Intent intent) { 1308 } 1309 1310 /** 1311 * The hook for {@link ActivityThread} to save the state of this activity. 1312 * 1313 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1314 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1315 * 1316 * @param outState The bundle to save the state to. 1317 */ 1318 final void performSaveInstanceState(Bundle outState) { 1319 onSaveInstanceState(outState); 1320 saveManagedDialogs(outState); 1321 mActivityTransitionState.saveState(outState); 1322 storeHasCurrentPermissionRequest(outState); 1323 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1324 } 1325 1326 /** 1327 * The hook for {@link ActivityThread} to save the state of this activity. 1328 * 1329 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1330 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1331 * 1332 * @param outState The bundle to save the state to. 1333 * @param outPersistentState The bundle to save persistent state to. 1334 */ 1335 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1336 onSaveInstanceState(outState, outPersistentState); 1337 saveManagedDialogs(outState); 1338 storeHasCurrentPermissionRequest(outState); 1339 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1340 ", " + outPersistentState); 1341 } 1342 1343 /** 1344 * Called to retrieve per-instance state from an activity before being killed 1345 * so that the state can be restored in {@link #onCreate} or 1346 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1347 * will be passed to both). 1348 * 1349 * <p>This method is called before an activity may be killed so that when it 1350 * comes back some time in the future it can restore its state. For example, 1351 * if activity B is launched in front of activity A, and at some point activity 1352 * A is killed to reclaim resources, activity A will have a chance to save the 1353 * current state of its user interface via this method so that when the user 1354 * returns to activity A, the state of the user interface can be restored 1355 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1356 * 1357 * <p>Do not confuse this method with activity lifecycle callbacks such as 1358 * {@link #onPause}, which is always called when an activity is being placed 1359 * in the background or on its way to destruction, or {@link #onStop} which 1360 * is called before destruction. One example of when {@link #onPause} and 1361 * {@link #onStop} is called and not this method is when a user navigates back 1362 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1363 * on B because that particular instance will never be restored, so the 1364 * system avoids calling it. An example when {@link #onPause} is called and 1365 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1366 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1367 * killed during the lifetime of B since the state of the user interface of 1368 * A will stay intact. 1369 * 1370 * <p>The default implementation takes care of most of the UI per-instance 1371 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1372 * view in the hierarchy that has an id, and by saving the id of the currently 1373 * focused view (all of which is restored by the default implementation of 1374 * {@link #onRestoreInstanceState}). If you override this method to save additional 1375 * information not captured by each individual view, you will likely want to 1376 * call through to the default implementation, otherwise be prepared to save 1377 * all of the state of each view yourself. 1378 * 1379 * <p>If called, this method will occur before {@link #onStop}. There are 1380 * no guarantees about whether it will occur before or after {@link #onPause}. 1381 * 1382 * @param outState Bundle in which to place your saved state. 1383 * 1384 * @see #onCreate 1385 * @see #onRestoreInstanceState 1386 * @see #onPause 1387 */ 1388 protected void onSaveInstanceState(Bundle outState) { 1389 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1390 Parcelable p = mFragments.saveAllState(); 1391 if (p != null) { 1392 outState.putParcelable(FRAGMENTS_TAG, p); 1393 } 1394 getApplication().dispatchActivitySaveInstanceState(this, outState); 1395 } 1396 1397 /** 1398 * This is the same as {@link #onSaveInstanceState} but is called for activities 1399 * created with the attribute {@link android.R.attr#persistableMode} set to 1400 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1401 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1402 * the first time that this activity is restarted following the next device reboot. 1403 * 1404 * @param outState Bundle in which to place your saved state. 1405 * @param outPersistentState State which will be saved across reboots. 1406 * 1407 * @see #onSaveInstanceState(Bundle) 1408 * @see #onCreate 1409 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1410 * @see #onPause 1411 */ 1412 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1413 onSaveInstanceState(outState); 1414 } 1415 1416 /** 1417 * Save the state of any managed dialogs. 1418 * 1419 * @param outState place to store the saved state. 1420 */ 1421 private void saveManagedDialogs(Bundle outState) { 1422 if (mManagedDialogs == null) { 1423 return; 1424 } 1425 1426 final int numDialogs = mManagedDialogs.size(); 1427 if (numDialogs == 0) { 1428 return; 1429 } 1430 1431 Bundle dialogState = new Bundle(); 1432 1433 int[] ids = new int[mManagedDialogs.size()]; 1434 1435 // save each dialog's bundle, gather the ids 1436 for (int i = 0; i < numDialogs; i++) { 1437 final int key = mManagedDialogs.keyAt(i); 1438 ids[i] = key; 1439 final ManagedDialog md = mManagedDialogs.valueAt(i); 1440 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1441 if (md.mArgs != null) { 1442 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1443 } 1444 } 1445 1446 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1447 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1448 } 1449 1450 1451 /** 1452 * Called as part of the activity lifecycle when an activity is going into 1453 * the background, but has not (yet) been killed. The counterpart to 1454 * {@link #onResume}. 1455 * 1456 * <p>When activity B is launched in front of activity A, this callback will 1457 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1458 * so be sure to not do anything lengthy here. 1459 * 1460 * <p>This callback is mostly used for saving any persistent state the 1461 * activity is editing, to present a "edit in place" model to the user and 1462 * making sure nothing is lost if there are not enough resources to start 1463 * the new activity without first killing this one. This is also a good 1464 * place to do things like stop animations and other things that consume a 1465 * noticeable amount of CPU in order to make the switch to the next activity 1466 * as fast as possible, or to close resources that are exclusive access 1467 * such as the camera. 1468 * 1469 * <p>In situations where the system needs more memory it may kill paused 1470 * processes to reclaim resources. Because of this, you should be sure 1471 * that all of your state is saved by the time you return from 1472 * this function. In general {@link #onSaveInstanceState} is used to save 1473 * per-instance state in the activity and this method is used to store 1474 * global persistent data (in content providers, files, etc.) 1475 * 1476 * <p>After receiving this call you will usually receive a following call 1477 * to {@link #onStop} (after the next activity has been resumed and 1478 * displayed), however in some cases there will be a direct call back to 1479 * {@link #onResume} without going through the stopped state. 1480 * 1481 * <p><em>Derived classes must call through to the super class's 1482 * implementation of this method. If they do not, an exception will be 1483 * thrown.</em></p> 1484 * 1485 * @see #onResume 1486 * @see #onSaveInstanceState 1487 * @see #onStop 1488 */ 1489 @CallSuper 1490 protected void onPause() { 1491 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1492 getApplication().dispatchActivityPaused(this); 1493 mCalled = true; 1494 } 1495 1496 /** 1497 * Called as part of the activity lifecycle when an activity is about to go 1498 * into the background as the result of user choice. For example, when the 1499 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1500 * when an incoming phone call causes the in-call Activity to be automatically 1501 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1502 * the activity being interrupted. In cases when it is invoked, this method 1503 * is called right before the activity's {@link #onPause} callback. 1504 * 1505 * <p>This callback and {@link #onUserInteraction} are intended to help 1506 * activities manage status bar notifications intelligently; specifically, 1507 * for helping activities determine the proper time to cancel a notfication. 1508 * 1509 * @see #onUserInteraction() 1510 */ 1511 protected void onUserLeaveHint() { 1512 } 1513 1514 /** 1515 * Generate a new thumbnail for this activity. This method is called before 1516 * pausing the activity, and should draw into <var>outBitmap</var> the 1517 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1518 * can use the given <var>canvas</var>, which is configured to draw into the 1519 * bitmap, for rendering if desired. 1520 * 1521 * <p>The default implementation returns fails and does not draw a thumbnail; 1522 * this will result in the platform creating its own thumbnail if needed. 1523 * 1524 * @param outBitmap The bitmap to contain the thumbnail. 1525 * @param canvas Can be used to render into the bitmap. 1526 * 1527 * @return Return true if you have drawn into the bitmap; otherwise after 1528 * you return it will be filled with a default thumbnail. 1529 * 1530 * @see #onCreateDescription 1531 * @see #onSaveInstanceState 1532 * @see #onPause 1533 */ 1534 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1535 return false; 1536 } 1537 1538 /** 1539 * Generate a new description for this activity. This method is called 1540 * before pausing the activity and can, if desired, return some textual 1541 * description of its current state to be displayed to the user. 1542 * 1543 * <p>The default implementation returns null, which will cause you to 1544 * inherit the description from the previous activity. If all activities 1545 * return null, generally the label of the top activity will be used as the 1546 * description. 1547 * 1548 * @return A description of what the user is doing. It should be short and 1549 * sweet (only a few words). 1550 * 1551 * @see #onCreateThumbnail 1552 * @see #onSaveInstanceState 1553 * @see #onPause 1554 */ 1555 @Nullable 1556 public CharSequence onCreateDescription() { 1557 return null; 1558 } 1559 1560 /** 1561 * This is called when the user is requesting an assist, to build a full 1562 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1563 * application. You can override this method to place into the bundle anything 1564 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1565 * of the assist Intent. 1566 * 1567 * <p>This function will be called after any global assist callbacks that had 1568 * been registered with {@link Application#registerOnProvideAssistDataListener 1569 * Application.registerOnProvideAssistDataListener}. 1570 */ 1571 public void onProvideAssistData(Bundle data) { 1572 } 1573 1574 /** 1575 * This is called when the user is requesting an assist, to provide references 1576 * to content related to the current activity. Before being called, the 1577 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1578 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1579 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1580 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1581 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1582 * 1583 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1584 * context of the activity, and fill in its ClipData with additional content of 1585 * interest that the user is currently viewing. For example, an image gallery application 1586 * that has launched in to an activity allowing the user to swipe through pictures should 1587 * modify the intent to reference the current image they are looking it; such an 1588 * application when showing a list of pictures should add a ClipData that has 1589 * references to all of the pictures currently visible on screen.</p> 1590 * 1591 * @param outContent The assist content to return. 1592 */ 1593 public void onProvideAssistContent(AssistContent outContent) { 1594 } 1595 1596 /** 1597 * Ask to have the current assistant shown to the user. This only works if the calling 1598 * activity is the current foreground activity. It is the same as calling 1599 * {@link android.service.voice.VoiceInteractionService#showSession 1600 * VoiceInteractionService.showSession} and requesting all of the possible context. 1601 * The receiver will always see 1602 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1603 * @return Returns true if the assistant was successfully invoked, else false. For example 1604 * false will be returned if the caller is not the current top activity. 1605 */ 1606 public boolean showAssist(Bundle args) { 1607 try { 1608 return ActivityManagerNative.getDefault().showAssistFromActivity(mToken, args); 1609 } catch (RemoteException e) { 1610 } 1611 return false; 1612 } 1613 1614 /** 1615 * Called when you are no longer visible to the user. You will next 1616 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1617 * depending on later user activity. 1618 * 1619 * <p>Note that this method may never be called, in low memory situations 1620 * where the system does not have enough memory to keep your activity's 1621 * process running after its {@link #onPause} method is called. 1622 * 1623 * <p><em>Derived classes must call through to the super class's 1624 * implementation of this method. If they do not, an exception will be 1625 * thrown.</em></p> 1626 * 1627 * @see #onRestart 1628 * @see #onResume 1629 * @see #onSaveInstanceState 1630 * @see #onDestroy 1631 */ 1632 @CallSuper 1633 protected void onStop() { 1634 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1635 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1636 mActivityTransitionState.onStop(); 1637 getApplication().dispatchActivityStopped(this); 1638 mTranslucentCallback = null; 1639 mCalled = true; 1640 } 1641 1642 /** 1643 * Perform any final cleanup before an activity is destroyed. This can 1644 * happen either because the activity is finishing (someone called 1645 * {@link #finish} on it, or because the system is temporarily destroying 1646 * this instance of the activity to save space. You can distinguish 1647 * between these two scenarios with the {@link #isFinishing} method. 1648 * 1649 * <p><em>Note: do not count on this method being called as a place for 1650 * saving data! For example, if an activity is editing data in a content 1651 * provider, those edits should be committed in either {@link #onPause} or 1652 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1653 * free resources like threads that are associated with an activity, so 1654 * that a destroyed activity does not leave such things around while the 1655 * rest of its application is still running. There are situations where 1656 * the system will simply kill the activity's hosting process without 1657 * calling this method (or any others) in it, so it should not be used to 1658 * do things that are intended to remain around after the process goes 1659 * away. 1660 * 1661 * <p><em>Derived classes must call through to the super class's 1662 * implementation of this method. If they do not, an exception will be 1663 * thrown.</em></p> 1664 * 1665 * @see #onPause 1666 * @see #onStop 1667 * @see #finish 1668 * @see #isFinishing 1669 */ 1670 @CallSuper 1671 protected void onDestroy() { 1672 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1673 mCalled = true; 1674 1675 // dismiss any dialogs we are managing. 1676 if (mManagedDialogs != null) { 1677 final int numDialogs = mManagedDialogs.size(); 1678 for (int i = 0; i < numDialogs; i++) { 1679 final ManagedDialog md = mManagedDialogs.valueAt(i); 1680 if (md.mDialog.isShowing()) { 1681 md.mDialog.dismiss(); 1682 } 1683 } 1684 mManagedDialogs = null; 1685 } 1686 1687 // close any cursors we are managing. 1688 synchronized (mManagedCursors) { 1689 int numCursors = mManagedCursors.size(); 1690 for (int i = 0; i < numCursors; i++) { 1691 ManagedCursor c = mManagedCursors.get(i); 1692 if (c != null) { 1693 c.mCursor.close(); 1694 } 1695 } 1696 mManagedCursors.clear(); 1697 } 1698 1699 // Close any open search dialog 1700 if (mSearchManager != null) { 1701 mSearchManager.stopSearch(); 1702 } 1703 1704 getApplication().dispatchActivityDestroyed(this); 1705 } 1706 1707 /** 1708 * Report to the system that your app is now fully drawn, purely for diagnostic 1709 * purposes (calling it does not impact the visible behavior of the activity). 1710 * This is only used to help instrument application launch times, so that the 1711 * app can report when it is fully in a usable state; without this, the only thing 1712 * the system itself can determine is the point at which the activity's window 1713 * is <em>first</em> drawn and displayed. To participate in app launch time 1714 * measurement, you should always call this method after first launch (when 1715 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1716 * entirely drawn your UI and populated with all of the significant data. You 1717 * can safely call this method any time after first launch as well, in which case 1718 * it will simply be ignored. 1719 */ 1720 public void reportFullyDrawn() { 1721 if (mDoReportFullyDrawn) { 1722 mDoReportFullyDrawn = false; 1723 try { 1724 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1725 } catch (RemoteException e) { 1726 } 1727 } 1728 } 1729 1730 /** 1731 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1732 * visa-versa. 1733 * @see android.R.attr#resizeableActivity 1734 * 1735 * @param multiWindowMode True if the activity is in multi-window mode. 1736 */ 1737 @CallSuper 1738 public void onMultiWindowModeChanged(boolean multiWindowMode) { 1739 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1740 "onMultiWindowModeChanged " + this + ": " + multiWindowMode); 1741 if (mWindow != null) { 1742 mWindow.onMultiWindowModeChanged(); 1743 } 1744 } 1745 1746 /** 1747 * Returns true if the activity is currently in multi-window mode. 1748 * @see android.R.attr#resizeableActivity 1749 * 1750 * @return True if the activity is in multi-window mode. 1751 */ 1752 public boolean inMultiWindowMode() { 1753 try { 1754 return ActivityManagerNative.getDefault().inMultiWindowMode(mToken); 1755 } catch (RemoteException e) { 1756 } 1757 return false; 1758 } 1759 1760 /** 1761 * Called by the system when the activity changes to and from picture-in-picture mode. 1762 * @see android.R.attr#supportsPictureInPicture 1763 * 1764 * @param pictureInPictureMode True if the activity is in picture-in-picture mode. 1765 */ 1766 public void onPictureInPictureModeChanged(boolean pictureInPictureMode) { 1767 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1768 "onPictureInPictureModeChanged " + this + ": " + pictureInPictureMode); 1769 } 1770 1771 /** 1772 * Returns true if the activity is currently in picture-in-picture mode. 1773 * @see android.R.attr#supportsPictureInPicture 1774 * 1775 * @return True if the activity is in picture-in-picture mode. 1776 */ 1777 public boolean inPictureInPictureMode() { 1778 try { 1779 return ActivityManagerNative.getDefault().inPictureInPictureMode(mToken); 1780 } catch (RemoteException e) { 1781 } 1782 return false; 1783 } 1784 1785 /** 1786 * Called by the system when the device configuration changes while your 1787 * activity is running. Note that this will <em>only</em> be called if 1788 * you have selected configurations you would like to handle with the 1789 * {@link android.R.attr#configChanges} attribute in your manifest. If 1790 * any configuration change occurs that is not selected to be reported 1791 * by that attribute, then instead of reporting it the system will stop 1792 * and restart the activity (to have it launched with the new 1793 * configuration). 1794 * 1795 * <p>At the time that this function has been called, your Resources 1796 * object will have been updated to return resource values matching the 1797 * new configuration. 1798 * 1799 * @param newConfig The new device configuration. 1800 */ 1801 public void onConfigurationChanged(Configuration newConfig) { 1802 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1803 mCalled = true; 1804 1805 mFragments.dispatchConfigurationChanged(newConfig); 1806 1807 if (mWindow != null) { 1808 // Pass the configuration changed event to the window 1809 mWindow.onConfigurationChanged(newConfig); 1810 } 1811 1812 if (mActionBar != null) { 1813 // Do this last; the action bar will need to access 1814 // view changes from above. 1815 mActionBar.onConfigurationChanged(newConfig); 1816 } 1817 } 1818 1819 /** 1820 * If this activity is being destroyed because it can not handle a 1821 * configuration parameter being changed (and thus its 1822 * {@link #onConfigurationChanged(Configuration)} method is 1823 * <em>not</em> being called), then you can use this method to discover 1824 * the set of changes that have occurred while in the process of being 1825 * destroyed. Note that there is no guarantee that these will be 1826 * accurate (other changes could have happened at any time), so you should 1827 * only use this as an optimization hint. 1828 * 1829 * @return Returns a bit field of the configuration parameters that are 1830 * changing, as defined by the {@link android.content.res.Configuration} 1831 * class. 1832 */ 1833 public int getChangingConfigurations() { 1834 return mConfigChangeFlags; 1835 } 1836 1837 /** 1838 * Retrieve the non-configuration instance data that was previously 1839 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1840 * be available from the initial {@link #onCreate} and 1841 * {@link #onStart} calls to the new instance, allowing you to extract 1842 * any useful dynamic state from the previous instance. 1843 * 1844 * <p>Note that the data you retrieve here should <em>only</em> be used 1845 * as an optimization for handling configuration changes. You should always 1846 * be able to handle getting a null pointer back, and an activity must 1847 * still be able to restore itself to its previous state (through the 1848 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1849 * function returns null. 1850 * 1851 * @return Returns the object previously returned by 1852 * {@link #onRetainNonConfigurationInstance()}. 1853 * 1854 * @deprecated Use the new {@link Fragment} API 1855 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1856 * available on older platforms through the Android compatibility package. 1857 */ 1858 @Nullable 1859 @Deprecated 1860 public Object getLastNonConfigurationInstance() { 1861 return mLastNonConfigurationInstances != null 1862 ? mLastNonConfigurationInstances.activity : null; 1863 } 1864 1865 /** 1866 * Called by the system, as part of destroying an 1867 * activity due to a configuration change, when it is known that a new 1868 * instance will immediately be created for the new configuration. You 1869 * can return any object you like here, including the activity instance 1870 * itself, which can later be retrieved by calling 1871 * {@link #getLastNonConfigurationInstance()} in the new activity 1872 * instance. 1873 * 1874 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1875 * or later, consider instead using a {@link Fragment} with 1876 * {@link Fragment#setRetainInstance(boolean) 1877 * Fragment.setRetainInstance(boolean}.</em> 1878 * 1879 * <p>This function is called purely as an optimization, and you must 1880 * not rely on it being called. When it is called, a number of guarantees 1881 * will be made to help optimize configuration switching: 1882 * <ul> 1883 * <li> The function will be called between {@link #onStop} and 1884 * {@link #onDestroy}. 1885 * <li> A new instance of the activity will <em>always</em> be immediately 1886 * created after this one's {@link #onDestroy()} is called. In particular, 1887 * <em>no</em> messages will be dispatched during this time (when the returned 1888 * object does not have an activity to be associated with). 1889 * <li> The object you return here will <em>always</em> be available from 1890 * the {@link #getLastNonConfigurationInstance()} method of the following 1891 * activity instance as described there. 1892 * </ul> 1893 * 1894 * <p>These guarantees are designed so that an activity can use this API 1895 * to propagate extensive state from the old to new activity instance, from 1896 * loaded bitmaps, to network connections, to evenly actively running 1897 * threads. Note that you should <em>not</em> propagate any data that 1898 * may change based on the configuration, including any data loaded from 1899 * resources such as strings, layouts, or drawables. 1900 * 1901 * <p>The guarantee of no message handling during the switch to the next 1902 * activity simplifies use with active objects. For example if your retained 1903 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1904 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1905 * not be called from the call here until you execute the next instance's 1906 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1907 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1908 * running in a separate thread.) 1909 * 1910 * @return Return any Object holding the desired state to propagate to the 1911 * next activity instance. 1912 * 1913 * @deprecated Use the new {@link Fragment} API 1914 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1915 * available on older platforms through the Android compatibility package. 1916 */ 1917 public Object onRetainNonConfigurationInstance() { 1918 return null; 1919 } 1920 1921 /** 1922 * Retrieve the non-configuration instance data that was previously 1923 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1924 * be available from the initial {@link #onCreate} and 1925 * {@link #onStart} calls to the new instance, allowing you to extract 1926 * any useful dynamic state from the previous instance. 1927 * 1928 * <p>Note that the data you retrieve here should <em>only</em> be used 1929 * as an optimization for handling configuration changes. You should always 1930 * be able to handle getting a null pointer back, and an activity must 1931 * still be able to restore itself to its previous state (through the 1932 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1933 * function returns null. 1934 * 1935 * @return Returns the object previously returned by 1936 * {@link #onRetainNonConfigurationChildInstances()} 1937 */ 1938 @Nullable 1939 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1940 return mLastNonConfigurationInstances != null 1941 ? mLastNonConfigurationInstances.children : null; 1942 } 1943 1944 /** 1945 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1946 * it should return either a mapping from child activity id strings to arbitrary objects, 1947 * or null. This method is intended to be used by Activity framework subclasses that control a 1948 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1949 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1950 */ 1951 @Nullable 1952 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1953 return null; 1954 } 1955 1956 NonConfigurationInstances retainNonConfigurationInstances() { 1957 Object activity = onRetainNonConfigurationInstance(); 1958 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1959 List<Fragment> fragments = mFragments.retainNonConfig(); 1960 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 1961 if (activity == null && children == null && fragments == null && loaders == null 1962 && mVoiceInteractor == null) { 1963 return null; 1964 } 1965 1966 NonConfigurationInstances nci = new NonConfigurationInstances(); 1967 nci.activity = activity; 1968 nci.children = children; 1969 nci.fragments = fragments; 1970 nci.loaders = loaders; 1971 if (mVoiceInteractor != null) { 1972 mVoiceInteractor.retainInstance(); 1973 nci.voiceInteractor = mVoiceInteractor; 1974 } 1975 return nci; 1976 } 1977 1978 public void onLowMemory() { 1979 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1980 mCalled = true; 1981 mFragments.dispatchLowMemory(); 1982 } 1983 1984 public void onTrimMemory(int level) { 1985 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1986 mCalled = true; 1987 mFragments.dispatchTrimMemory(level); 1988 } 1989 1990 /** 1991 * Return the FragmentManager for interacting with fragments associated 1992 * with this activity. 1993 */ 1994 public FragmentManager getFragmentManager() { 1995 return mFragments.getFragmentManager(); 1996 } 1997 1998 /** 1999 * Called when a Fragment is being attached to this activity, immediately 2000 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2001 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2002 */ 2003 public void onAttachFragment(Fragment fragment) { 2004 } 2005 2006 /** 2007 * Wrapper around 2008 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2009 * that gives the resulting {@link Cursor} to call 2010 * {@link #startManagingCursor} so that the activity will manage its 2011 * lifecycle for you. 2012 * 2013 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2014 * or later, consider instead using {@link LoaderManager} instead, available 2015 * via {@link #getLoaderManager()}.</em> 2016 * 2017 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2018 * this method, because the activity will do that for you at the appropriate time. However, if 2019 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2020 * not</em> automatically close the cursor and, in that case, you must call 2021 * {@link Cursor#close()}.</p> 2022 * 2023 * @param uri The URI of the content provider to query. 2024 * @param projection List of columns to return. 2025 * @param selection SQL WHERE clause. 2026 * @param sortOrder SQL ORDER BY clause. 2027 * 2028 * @return The Cursor that was returned by query(). 2029 * 2030 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2031 * @see #startManagingCursor 2032 * @hide 2033 * 2034 * @deprecated Use {@link CursorLoader} instead. 2035 */ 2036 @Deprecated 2037 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2038 String sortOrder) { 2039 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2040 if (c != null) { 2041 startManagingCursor(c); 2042 } 2043 return c; 2044 } 2045 2046 /** 2047 * Wrapper around 2048 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2049 * that gives the resulting {@link Cursor} to call 2050 * {@link #startManagingCursor} so that the activity will manage its 2051 * lifecycle for you. 2052 * 2053 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2054 * or later, consider instead using {@link LoaderManager} instead, available 2055 * via {@link #getLoaderManager()}.</em> 2056 * 2057 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2058 * this method, because the activity will do that for you at the appropriate time. However, if 2059 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2060 * not</em> automatically close the cursor and, in that case, you must call 2061 * {@link Cursor#close()}.</p> 2062 * 2063 * @param uri The URI of the content provider to query. 2064 * @param projection List of columns to return. 2065 * @param selection SQL WHERE clause. 2066 * @param selectionArgs The arguments to selection, if any ?s are pesent 2067 * @param sortOrder SQL ORDER BY clause. 2068 * 2069 * @return The Cursor that was returned by query(). 2070 * 2071 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2072 * @see #startManagingCursor 2073 * 2074 * @deprecated Use {@link CursorLoader} instead. 2075 */ 2076 @Deprecated 2077 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2078 String[] selectionArgs, String sortOrder) { 2079 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2080 if (c != null) { 2081 startManagingCursor(c); 2082 } 2083 return c; 2084 } 2085 2086 /** 2087 * This method allows the activity to take care of managing the given 2088 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2089 * That is, when the activity is stopped it will automatically call 2090 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2091 * it will call {@link Cursor#requery} for you. When the activity is 2092 * destroyed, all managed Cursors will be closed automatically. 2093 * 2094 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2095 * or later, consider instead using {@link LoaderManager} instead, available 2096 * via {@link #getLoaderManager()}.</em> 2097 * 2098 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2099 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2100 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2101 * <em>will not</em> automatically close the cursor and, in that case, you must call 2102 * {@link Cursor#close()}.</p> 2103 * 2104 * @param c The Cursor to be managed. 2105 * 2106 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2107 * @see #stopManagingCursor 2108 * 2109 * @deprecated Use the new {@link android.content.CursorLoader} class with 2110 * {@link LoaderManager} instead; this is also 2111 * available on older platforms through the Android compatibility package. 2112 */ 2113 @Deprecated 2114 public void startManagingCursor(Cursor c) { 2115 synchronized (mManagedCursors) { 2116 mManagedCursors.add(new ManagedCursor(c)); 2117 } 2118 } 2119 2120 /** 2121 * Given a Cursor that was previously given to 2122 * {@link #startManagingCursor}, stop the activity's management of that 2123 * cursor. 2124 * 2125 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2126 * the system <em>will not</em> automatically close the cursor and you must call 2127 * {@link Cursor#close()}.</p> 2128 * 2129 * @param c The Cursor that was being managed. 2130 * 2131 * @see #startManagingCursor 2132 * 2133 * @deprecated Use the new {@link android.content.CursorLoader} class with 2134 * {@link LoaderManager} instead; this is also 2135 * available on older platforms through the Android compatibility package. 2136 */ 2137 @Deprecated 2138 public void stopManagingCursor(Cursor c) { 2139 synchronized (mManagedCursors) { 2140 final int N = mManagedCursors.size(); 2141 for (int i=0; i<N; i++) { 2142 ManagedCursor mc = mManagedCursors.get(i); 2143 if (mc.mCursor == c) { 2144 mManagedCursors.remove(i); 2145 break; 2146 } 2147 } 2148 } 2149 } 2150 2151 /** 2152 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2153 * this is a no-op. 2154 * @hide 2155 */ 2156 @Deprecated 2157 public void setPersistent(boolean isPersistent) { 2158 } 2159 2160 /** 2161 * Finds a view that was identified by the id attribute from the XML that 2162 * was processed in {@link #onCreate}. 2163 * 2164 * @return The view if found or null otherwise. 2165 */ 2166 @Nullable 2167 public View findViewById(@IdRes int id) { 2168 return getWindow().findViewById(id); 2169 } 2170 2171 /** 2172 * Retrieve a reference to this activity's ActionBar. 2173 * 2174 * @return The Activity's ActionBar, or null if it does not have one. 2175 */ 2176 @Nullable 2177 public ActionBar getActionBar() { 2178 initWindowDecorActionBar(); 2179 return mActionBar; 2180 } 2181 2182 /** 2183 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2184 * Activity window. 2185 * 2186 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2187 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2188 * a traditional window decor action bar. The toolbar's menu will be populated with the 2189 * Activity's options menu and the navigation button will be wired through the standard 2190 * {@link android.R.id#home home} menu select action.</p> 2191 * 2192 * <p>In order to use a Toolbar within the Activity's window content the application 2193 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2194 * 2195 * @param toolbar Toolbar to set as the Activity's action bar 2196 */ 2197 public void setActionBar(@Nullable Toolbar toolbar) { 2198 if (getActionBar() instanceof WindowDecorActionBar) { 2199 throw new IllegalStateException("This Activity already has an action bar supplied " + 2200 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2201 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2202 } 2203 // Clear out the MenuInflater to make sure that it is valid for the new Action Bar 2204 mMenuInflater = null; 2205 2206 ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2207 mActionBar = tbab; 2208 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2209 mActionBar.invalidateOptionsMenu(); 2210 } 2211 2212 /** 2213 * Creates a new ActionBar, locates the inflated ActionBarView, 2214 * initializes the ActionBar with the view, and sets mActionBar. 2215 */ 2216 private void initWindowDecorActionBar() { 2217 Window window = getWindow(); 2218 2219 // Initializing the window decor can change window feature flags. 2220 // Make sure that we have the correct set before performing the test below. 2221 window.getDecorView(); 2222 2223 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2224 return; 2225 } 2226 2227 mActionBar = new WindowDecorActionBar(this); 2228 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2229 2230 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2231 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2232 } 2233 2234 /** 2235 * Set the activity content from a layout resource. The resource will be 2236 * inflated, adding all top-level views to the activity. 2237 * 2238 * @param layoutResID Resource ID to be inflated. 2239 * 2240 * @see #setContentView(android.view.View) 2241 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2242 */ 2243 public void setContentView(@LayoutRes int layoutResID) { 2244 getWindow().setContentView(layoutResID); 2245 initWindowDecorActionBar(); 2246 } 2247 2248 /** 2249 * Set the activity content to an explicit view. This view is placed 2250 * directly into the activity's view hierarchy. It can itself be a complex 2251 * view hierarchy. When calling this method, the layout parameters of the 2252 * specified view are ignored. Both the width and the height of the view are 2253 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2254 * your own layout parameters, invoke 2255 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2256 * instead. 2257 * 2258 * @param view The desired content to display. 2259 * 2260 * @see #setContentView(int) 2261 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2262 */ 2263 public void setContentView(View view) { 2264 getWindow().setContentView(view); 2265 initWindowDecorActionBar(); 2266 } 2267 2268 /** 2269 * Set the activity content to an explicit view. This view is placed 2270 * directly into the activity's view hierarchy. It can itself be a complex 2271 * view hierarchy. 2272 * 2273 * @param view The desired content to display. 2274 * @param params Layout parameters for the view. 2275 * 2276 * @see #setContentView(android.view.View) 2277 * @see #setContentView(int) 2278 */ 2279 public void setContentView(View view, ViewGroup.LayoutParams params) { 2280 getWindow().setContentView(view, params); 2281 initWindowDecorActionBar(); 2282 } 2283 2284 /** 2285 * Add an additional content view to the activity. Added after any existing 2286 * ones in the activity -- existing views are NOT removed. 2287 * 2288 * @param view The desired content to display. 2289 * @param params Layout parameters for the view. 2290 */ 2291 public void addContentView(View view, ViewGroup.LayoutParams params) { 2292 getWindow().addContentView(view, params); 2293 initWindowDecorActionBar(); 2294 } 2295 2296 /** 2297 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2298 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2299 * 2300 * <p>This method will return non-null after content has been initialized (e.g. by using 2301 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2302 * 2303 * @return This window's content TransitionManager or null if none is set. 2304 */ 2305 public TransitionManager getContentTransitionManager() { 2306 return getWindow().getTransitionManager(); 2307 } 2308 2309 /** 2310 * Set the {@link TransitionManager} to use for default transitions in this window. 2311 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2312 * 2313 * @param tm The TransitionManager to use for scene changes. 2314 */ 2315 public void setContentTransitionManager(TransitionManager tm) { 2316 getWindow().setTransitionManager(tm); 2317 } 2318 2319 /** 2320 * Retrieve the {@link Scene} representing this window's current content. 2321 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2322 * 2323 * <p>This method will return null if the current content is not represented by a Scene.</p> 2324 * 2325 * @return Current Scene being shown or null 2326 */ 2327 public Scene getContentScene() { 2328 return getWindow().getContentScene(); 2329 } 2330 2331 /** 2332 * Sets whether this activity is finished when touched outside its window's 2333 * bounds. 2334 */ 2335 public void setFinishOnTouchOutside(boolean finish) { 2336 mWindow.setCloseOnTouchOutside(finish); 2337 } 2338 2339 /** @hide */ 2340 @IntDef({ 2341 DEFAULT_KEYS_DISABLE, 2342 DEFAULT_KEYS_DIALER, 2343 DEFAULT_KEYS_SHORTCUT, 2344 DEFAULT_KEYS_SEARCH_LOCAL, 2345 DEFAULT_KEYS_SEARCH_GLOBAL}) 2346 @Retention(RetentionPolicy.SOURCE) 2347 @interface DefaultKeyMode {} 2348 2349 /** 2350 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2351 * keys. 2352 * 2353 * @see #setDefaultKeyMode 2354 */ 2355 static public final int DEFAULT_KEYS_DISABLE = 0; 2356 /** 2357 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2358 * key handling. 2359 * 2360 * @see #setDefaultKeyMode 2361 */ 2362 static public final int DEFAULT_KEYS_DIALER = 1; 2363 /** 2364 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2365 * default key handling. 2366 * 2367 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2368 * 2369 * @see #setDefaultKeyMode 2370 */ 2371 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2372 /** 2373 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2374 * will start an application-defined search. (If the application or activity does not 2375 * actually define a search, the the keys will be ignored.) 2376 * 2377 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2378 * 2379 * @see #setDefaultKeyMode 2380 */ 2381 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2382 2383 /** 2384 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2385 * will start a global search (typically web search, but some platforms may define alternate 2386 * methods for global search) 2387 * 2388 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2389 * 2390 * @see #setDefaultKeyMode 2391 */ 2392 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2393 2394 /** 2395 * Select the default key handling for this activity. This controls what 2396 * will happen to key events that are not otherwise handled. The default 2397 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2398 * floor. Other modes allow you to launch the dialer 2399 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2400 * menu without requiring the menu key be held down 2401 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2402 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2403 * 2404 * <p>Note that the mode selected here does not impact the default 2405 * handling of system keys, such as the "back" and "menu" keys, and your 2406 * activity and its views always get a first chance to receive and handle 2407 * all application keys. 2408 * 2409 * @param mode The desired default key mode constant. 2410 * 2411 * @see #DEFAULT_KEYS_DISABLE 2412 * @see #DEFAULT_KEYS_DIALER 2413 * @see #DEFAULT_KEYS_SHORTCUT 2414 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2415 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2416 * @see #onKeyDown 2417 */ 2418 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2419 mDefaultKeyMode = mode; 2420 2421 // Some modes use a SpannableStringBuilder to track & dispatch input events 2422 // This list must remain in sync with the switch in onKeyDown() 2423 switch (mode) { 2424 case DEFAULT_KEYS_DISABLE: 2425 case DEFAULT_KEYS_SHORTCUT: 2426 mDefaultKeySsb = null; // not used in these modes 2427 break; 2428 case DEFAULT_KEYS_DIALER: 2429 case DEFAULT_KEYS_SEARCH_LOCAL: 2430 case DEFAULT_KEYS_SEARCH_GLOBAL: 2431 mDefaultKeySsb = new SpannableStringBuilder(); 2432 Selection.setSelection(mDefaultKeySsb,0); 2433 break; 2434 default: 2435 throw new IllegalArgumentException(); 2436 } 2437 } 2438 2439 /** 2440 * Called when a key was pressed down and not handled by any of the views 2441 * inside of the activity. So, for example, key presses while the cursor 2442 * is inside a TextView will not trigger the event (unless it is a navigation 2443 * to another object) because TextView handles its own key presses. 2444 * 2445 * <p>If the focused view didn't want this event, this method is called. 2446 * 2447 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2448 * by calling {@link #onBackPressed()}, though the behavior varies based 2449 * on the application compatibility mode: for 2450 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2451 * it will set up the dispatch to call {@link #onKeyUp} where the action 2452 * will be performed; for earlier applications, it will perform the 2453 * action immediately in on-down, as those versions of the platform 2454 * behaved. 2455 * 2456 * <p>Other additional default key handling may be performed 2457 * if configured with {@link #setDefaultKeyMode}. 2458 * 2459 * @return Return <code>true</code> to prevent this event from being propagated 2460 * further, or <code>false</code> to indicate that you have not handled 2461 * this event and it should continue to be propagated. 2462 * @see #onKeyUp 2463 * @see android.view.KeyEvent 2464 */ 2465 public boolean onKeyDown(int keyCode, KeyEvent event) { 2466 if (keyCode == KeyEvent.KEYCODE_BACK) { 2467 if (getApplicationInfo().targetSdkVersion 2468 >= Build.VERSION_CODES.ECLAIR) { 2469 event.startTracking(); 2470 } else { 2471 onBackPressed(); 2472 } 2473 return true; 2474 } 2475 2476 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2477 return false; 2478 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2479 Window w = getWindow(); 2480 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2481 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2482 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2483 return true; 2484 } 2485 return false; 2486 } else { 2487 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2488 boolean clearSpannable = false; 2489 boolean handled; 2490 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2491 clearSpannable = true; 2492 handled = false; 2493 } else { 2494 handled = TextKeyListener.getInstance().onKeyDown( 2495 null, mDefaultKeySsb, keyCode, event); 2496 if (handled && mDefaultKeySsb.length() > 0) { 2497 // something useable has been typed - dispatch it now. 2498 2499 final String str = mDefaultKeySsb.toString(); 2500 clearSpannable = true; 2501 2502 switch (mDefaultKeyMode) { 2503 case DEFAULT_KEYS_DIALER: 2504 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2505 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2506 startActivity(intent); 2507 break; 2508 case DEFAULT_KEYS_SEARCH_LOCAL: 2509 startSearch(str, false, null, false); 2510 break; 2511 case DEFAULT_KEYS_SEARCH_GLOBAL: 2512 startSearch(str, false, null, true); 2513 break; 2514 } 2515 } 2516 } 2517 if (clearSpannable) { 2518 mDefaultKeySsb.clear(); 2519 mDefaultKeySsb.clearSpans(); 2520 Selection.setSelection(mDefaultKeySsb,0); 2521 } 2522 return handled; 2523 } 2524 } 2525 2526 /** 2527 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2528 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2529 * the event). 2530 */ 2531 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2532 return false; 2533 } 2534 2535 /** 2536 * Called when a key was released and not handled by any of the views 2537 * inside of the activity. So, for example, key presses while the cursor 2538 * is inside a TextView will not trigger the event (unless it is a navigation 2539 * to another object) because TextView handles its own key presses. 2540 * 2541 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2542 * and go back. 2543 * 2544 * @return Return <code>true</code> to prevent this event from being propagated 2545 * further, or <code>false</code> to indicate that you have not handled 2546 * this event and it should continue to be propagated. 2547 * @see #onKeyDown 2548 * @see KeyEvent 2549 */ 2550 public boolean onKeyUp(int keyCode, KeyEvent event) { 2551 if (getApplicationInfo().targetSdkVersion 2552 >= Build.VERSION_CODES.ECLAIR) { 2553 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2554 && !event.isCanceled()) { 2555 onBackPressed(); 2556 return true; 2557 } 2558 } 2559 return false; 2560 } 2561 2562 /** 2563 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2564 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2565 * the event). 2566 */ 2567 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2568 return false; 2569 } 2570 2571 /** 2572 * Called when the activity has detected the user's press of the back 2573 * key. The default implementation simply finishes the current activity, 2574 * but you can override this to do whatever you want. 2575 */ 2576 public void onBackPressed() { 2577 if (mActionBar != null && mActionBar.collapseActionView()) { 2578 return; 2579 } 2580 2581 if (!mFragments.getFragmentManager().popBackStackImmediate()) { 2582 finishAfterTransition(); 2583 } 2584 } 2585 2586 /** 2587 * Called when a key shortcut event is not handled by any of the views in the Activity. 2588 * Override this method to implement global key shortcuts for the Activity. 2589 * Key shortcuts can also be implemented by setting the 2590 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2591 * 2592 * @param keyCode The value in event.getKeyCode(). 2593 * @param event Description of the key event. 2594 * @return True if the key shortcut was handled. 2595 */ 2596 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2597 // Let the Action Bar have a chance at handling the shortcut. 2598 ActionBar actionBar = getActionBar(); 2599 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 2600 } 2601 2602 /** 2603 * Called when a touch screen event was not handled by any of the views 2604 * under it. This is most useful to process touch events that happen 2605 * outside of your window bounds, where there is no view to receive it. 2606 * 2607 * @param event The touch screen event being processed. 2608 * 2609 * @return Return true if you have consumed the event, false if you haven't. 2610 * The default implementation always returns false. 2611 */ 2612 public boolean onTouchEvent(MotionEvent event) { 2613 if (mWindow.shouldCloseOnTouch(this, event)) { 2614 finish(); 2615 return true; 2616 } 2617 2618 return false; 2619 } 2620 2621 /** 2622 * Called when the trackball was moved and not handled by any of the 2623 * views inside of the activity. So, for example, if the trackball moves 2624 * while focus is on a button, you will receive a call here because 2625 * buttons do not normally do anything with trackball events. The call 2626 * here happens <em>before</em> trackball movements are converted to 2627 * DPAD key events, which then get sent back to the view hierarchy, and 2628 * will be processed at the point for things like focus navigation. 2629 * 2630 * @param event The trackball event being processed. 2631 * 2632 * @return Return true if you have consumed the event, false if you haven't. 2633 * The default implementation always returns false. 2634 */ 2635 public boolean onTrackballEvent(MotionEvent event) { 2636 return false; 2637 } 2638 2639 /** 2640 * Called when a generic motion event was not handled by any of the 2641 * views inside of the activity. 2642 * <p> 2643 * Generic motion events describe joystick movements, mouse hovers, track pad 2644 * touches, scroll wheel movements and other input events. The 2645 * {@link MotionEvent#getSource() source} of the motion event specifies 2646 * the class of input that was received. Implementations of this method 2647 * must examine the bits in the source before processing the event. 2648 * The following code example shows how this is done. 2649 * </p><p> 2650 * Generic motion events with source class 2651 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2652 * are delivered to the view under the pointer. All other generic motion events are 2653 * delivered to the focused view. 2654 * </p><p> 2655 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2656 * handle this event. 2657 * </p> 2658 * 2659 * @param event The generic motion event being processed. 2660 * 2661 * @return Return true if you have consumed the event, false if you haven't. 2662 * The default implementation always returns false. 2663 */ 2664 public boolean onGenericMotionEvent(MotionEvent event) { 2665 return false; 2666 } 2667 2668 /** 2669 * Called whenever a key, touch, or trackball event is dispatched to the 2670 * activity. Implement this method if you wish to know that the user has 2671 * interacted with the device in some way while your activity is running. 2672 * This callback and {@link #onUserLeaveHint} are intended to help 2673 * activities manage status bar notifications intelligently; specifically, 2674 * for helping activities determine the proper time to cancel a notfication. 2675 * 2676 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2677 * be accompanied by calls to {@link #onUserInteraction}. This 2678 * ensures that your activity will be told of relevant user activity such 2679 * as pulling down the notification pane and touching an item there. 2680 * 2681 * <p>Note that this callback will be invoked for the touch down action 2682 * that begins a touch gesture, but may not be invoked for the touch-moved 2683 * and touch-up actions that follow. 2684 * 2685 * @see #onUserLeaveHint() 2686 */ 2687 public void onUserInteraction() { 2688 } 2689 2690 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2691 // Update window manager if: we have a view, that view is 2692 // attached to its parent (which will be a RootView), and 2693 // this activity is not embedded. 2694 if (mParent == null) { 2695 View decor = mDecor; 2696 if (decor != null && decor.getParent() != null) { 2697 getWindowManager().updateViewLayout(decor, params); 2698 } 2699 } 2700 } 2701 2702 public void onContentChanged() { 2703 } 2704 2705 /** 2706 * Called when the current {@link Window} of the activity gains or loses 2707 * focus. This is the best indicator of whether this activity is visible 2708 * to the user. The default implementation clears the key tracking 2709 * state, so should always be called. 2710 * 2711 * <p>Note that this provides information about global focus state, which 2712 * is managed independently of activity lifecycles. As such, while focus 2713 * changes will generally have some relation to lifecycle changes (an 2714 * activity that is stopped will not generally get window focus), you 2715 * should not rely on any particular order between the callbacks here and 2716 * those in the other lifecycle methods such as {@link #onResume}. 2717 * 2718 * <p>As a general rule, however, a resumed activity will have window 2719 * focus... unless it has displayed other dialogs or popups that take 2720 * input focus, in which case the activity itself will not have focus 2721 * when the other windows have it. Likewise, the system may display 2722 * system-level windows (such as the status bar notification panel or 2723 * a system alert) which will temporarily take window input focus without 2724 * pausing the foreground activity. 2725 * 2726 * @param hasFocus Whether the window of this activity has focus. 2727 * 2728 * @see #hasWindowFocus() 2729 * @see #onResume 2730 * @see View#onWindowFocusChanged(boolean) 2731 */ 2732 public void onWindowFocusChanged(boolean hasFocus) { 2733 } 2734 2735 /** 2736 * Called when the main window associated with the activity has been 2737 * attached to the window manager. 2738 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2739 * for more information. 2740 * @see View#onAttachedToWindow 2741 */ 2742 public void onAttachedToWindow() { 2743 } 2744 2745 /** 2746 * Called when the main window associated with the activity has been 2747 * detached from the window manager. 2748 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2749 * for more information. 2750 * @see View#onDetachedFromWindow 2751 */ 2752 public void onDetachedFromWindow() { 2753 } 2754 2755 /** 2756 * Returns true if this activity's <em>main</em> window currently has window focus. 2757 * Note that this is not the same as the view itself having focus. 2758 * 2759 * @return True if this activity's main window currently has window focus. 2760 * 2761 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2762 */ 2763 public boolean hasWindowFocus() { 2764 Window w = getWindow(); 2765 if (w != null) { 2766 View d = w.getDecorView(); 2767 if (d != null) { 2768 return d.hasWindowFocus(); 2769 } 2770 } 2771 return false; 2772 } 2773 2774 /** 2775 * Called when the main window associated with the activity has been dismissed. 2776 * @hide 2777 */ 2778 @Override 2779 public void onWindowDismissed(boolean finishTask) { 2780 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 2781 } 2782 2783 2784 /** 2785 * Called to move the window and its activity/task to a different stack container. 2786 * For example, a window can move between 2787 * {@link android.app.ActivityManager.StackId#FULLSCREEN_WORKSPACE_STACK_ID} stack and 2788 * {@link android.app.ActivityManager.StackId#FREEFORM_WORKSPACE_STACK_ID} stack. 2789 * 2790 * @param stackId stack Id to change to. 2791 * @hide 2792 */ 2793 @Override 2794 public void changeWindowStack(int stackId) throws RemoteException { 2795 ActivityManagerNative.getDefault().moveActivityToStack(mToken, stackId); 2796 } 2797 2798 /** Returns the current stack Id for the window. 2799 * @hide 2800 */ 2801 @Override 2802 public int getWindowStackId() throws RemoteException { 2803 return ActivityManagerNative.getDefault().getActivityStackId(mToken); 2804 } 2805 2806 /** 2807 * Called to process key events. You can override this to intercept all 2808 * key events before they are dispatched to the window. Be sure to call 2809 * this implementation for key events that should be handled normally. 2810 * 2811 * @param event The key event. 2812 * 2813 * @return boolean Return true if this event was consumed. 2814 */ 2815 public boolean dispatchKeyEvent(KeyEvent event) { 2816 onUserInteraction(); 2817 2818 // Let action bars open menus in response to the menu key prioritized over 2819 // the window handling it 2820 final int keyCode = event.getKeyCode(); 2821 if (keyCode == KeyEvent.KEYCODE_MENU && 2822 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2823 return true; 2824 } else if (keyCode == KeyEvent.KEYCODE_DPAD_UP) { 2825 // Capture the Alt-up and send focus to the ActionBar 2826 final int action = event.getAction(); 2827 if (action == KeyEvent.ACTION_DOWN) { 2828 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 2829 final ActionBar actionBar = getActionBar(); 2830 if (actionBar != null && actionBar.isShowing() && actionBar.requestFocus()) { 2831 mEatKeyUpEvent = true; 2832 return true; 2833 } 2834 } 2835 } else if (action == KeyEvent.ACTION_UP && mEatKeyUpEvent) { 2836 mEatKeyUpEvent = false; 2837 return true; 2838 } 2839 } 2840 2841 Window win = getWindow(); 2842 if (win.superDispatchKeyEvent(event)) { 2843 return true; 2844 } 2845 View decor = mDecor; 2846 if (decor == null) decor = win.getDecorView(); 2847 return event.dispatch(this, decor != null 2848 ? decor.getKeyDispatcherState() : null, this); 2849 } 2850 2851 /** 2852 * Called to process a key shortcut event. 2853 * You can override this to intercept all key shortcut events before they are 2854 * dispatched to the window. Be sure to call this implementation for key shortcut 2855 * events that should be handled normally. 2856 * 2857 * @param event The key shortcut event. 2858 * @return True if this event was consumed. 2859 */ 2860 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2861 onUserInteraction(); 2862 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2863 return true; 2864 } 2865 return onKeyShortcut(event.getKeyCode(), event); 2866 } 2867 2868 /** 2869 * Called to process touch screen events. You can override this to 2870 * intercept all touch screen events before they are dispatched to the 2871 * window. Be sure to call this implementation for touch screen events 2872 * that should be handled normally. 2873 * 2874 * @param ev The touch screen event. 2875 * 2876 * @return boolean Return true if this event was consumed. 2877 */ 2878 public boolean dispatchTouchEvent(MotionEvent ev) { 2879 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2880 onUserInteraction(); 2881 } 2882 if (getWindow().superDispatchTouchEvent(ev)) { 2883 return true; 2884 } 2885 return onTouchEvent(ev); 2886 } 2887 2888 /** 2889 * Called to process trackball events. You can override this to 2890 * intercept all trackball events before they are dispatched to the 2891 * window. Be sure to call this implementation for trackball events 2892 * that should be handled normally. 2893 * 2894 * @param ev The trackball event. 2895 * 2896 * @return boolean Return true if this event was consumed. 2897 */ 2898 public boolean dispatchTrackballEvent(MotionEvent ev) { 2899 onUserInteraction(); 2900 if (getWindow().superDispatchTrackballEvent(ev)) { 2901 return true; 2902 } 2903 return onTrackballEvent(ev); 2904 } 2905 2906 /** 2907 * Called to process generic motion events. You can override this to 2908 * intercept all generic motion events before they are dispatched to the 2909 * window. Be sure to call this implementation for generic motion events 2910 * that should be handled normally. 2911 * 2912 * @param ev The generic motion event. 2913 * 2914 * @return boolean Return true if this event was consumed. 2915 */ 2916 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2917 onUserInteraction(); 2918 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2919 return true; 2920 } 2921 return onGenericMotionEvent(ev); 2922 } 2923 2924 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2925 event.setClassName(getClass().getName()); 2926 event.setPackageName(getPackageName()); 2927 2928 LayoutParams params = getWindow().getAttributes(); 2929 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2930 (params.height == LayoutParams.MATCH_PARENT); 2931 event.setFullScreen(isFullScreen); 2932 2933 CharSequence title = getTitle(); 2934 if (!TextUtils.isEmpty(title)) { 2935 event.getText().add(title); 2936 } 2937 2938 return true; 2939 } 2940 2941 /** 2942 * Default implementation of 2943 * {@link android.view.Window.Callback#onCreatePanelView} 2944 * for activities. This 2945 * simply returns null so that all panel sub-windows will have the default 2946 * menu behavior. 2947 */ 2948 @Nullable 2949 public View onCreatePanelView(int featureId) { 2950 return null; 2951 } 2952 2953 /** 2954 * Default implementation of 2955 * {@link android.view.Window.Callback#onCreatePanelMenu} 2956 * for activities. This calls through to the new 2957 * {@link #onCreateOptionsMenu} method for the 2958 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2959 * so that subclasses of Activity don't need to deal with feature codes. 2960 */ 2961 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2962 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2963 boolean show = onCreateOptionsMenu(menu); 2964 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2965 return show; 2966 } 2967 return false; 2968 } 2969 2970 /** 2971 * Default implementation of 2972 * {@link android.view.Window.Callback#onPreparePanel} 2973 * for activities. This 2974 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2975 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2976 * panel, so that subclasses of 2977 * Activity don't need to deal with feature codes. 2978 */ 2979 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2980 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2981 boolean goforit = onPrepareOptionsMenu(menu); 2982 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2983 return goforit; 2984 } 2985 return true; 2986 } 2987 2988 /** 2989 * {@inheritDoc} 2990 * 2991 * @return The default implementation returns true. 2992 */ 2993 public boolean onMenuOpened(int featureId, Menu menu) { 2994 if (featureId == Window.FEATURE_ACTION_BAR) { 2995 initWindowDecorActionBar(); 2996 if (mActionBar != null) { 2997 mActionBar.dispatchMenuVisibilityChanged(true); 2998 } else { 2999 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3000 } 3001 } 3002 return true; 3003 } 3004 3005 /** 3006 * Default implementation of 3007 * {@link android.view.Window.Callback#onMenuItemSelected} 3008 * for activities. This calls through to the new 3009 * {@link #onOptionsItemSelected} method for the 3010 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3011 * panel, so that subclasses of 3012 * Activity don't need to deal with feature codes. 3013 */ 3014 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3015 CharSequence titleCondensed = item.getTitleCondensed(); 3016 3017 switch (featureId) { 3018 case Window.FEATURE_OPTIONS_PANEL: 3019 // Put event logging here so it gets called even if subclass 3020 // doesn't call through to superclass's implmeentation of each 3021 // of these methods below 3022 if(titleCondensed != null) { 3023 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3024 } 3025 if (onOptionsItemSelected(item)) { 3026 return true; 3027 } 3028 if (mFragments.dispatchOptionsItemSelected(item)) { 3029 return true; 3030 } 3031 if (item.getItemId() == android.R.id.home && mActionBar != null && 3032 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3033 if (mParent == null) { 3034 return onNavigateUp(); 3035 } else { 3036 return mParent.onNavigateUpFromChild(this); 3037 } 3038 } 3039 return false; 3040 3041 case Window.FEATURE_CONTEXT_MENU: 3042 if(titleCondensed != null) { 3043 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3044 } 3045 if (onContextItemSelected(item)) { 3046 return true; 3047 } 3048 return mFragments.dispatchContextItemSelected(item); 3049 3050 default: 3051 return false; 3052 } 3053 } 3054 3055 /** 3056 * Default implementation of 3057 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3058 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3059 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3060 * so that subclasses of Activity don't need to deal with feature codes. 3061 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3062 * {@link #onContextMenuClosed(Menu)} will be called. 3063 */ 3064 public void onPanelClosed(int featureId, Menu menu) { 3065 switch (featureId) { 3066 case Window.FEATURE_OPTIONS_PANEL: 3067 mFragments.dispatchOptionsMenuClosed(menu); 3068 onOptionsMenuClosed(menu); 3069 break; 3070 3071 case Window.FEATURE_CONTEXT_MENU: 3072 onContextMenuClosed(menu); 3073 break; 3074 3075 case Window.FEATURE_ACTION_BAR: 3076 initWindowDecorActionBar(); 3077 mActionBar.dispatchMenuVisibilityChanged(false); 3078 break; 3079 } 3080 } 3081 3082 /** 3083 * Declare that the options menu has changed, so should be recreated. 3084 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3085 * time it needs to be displayed. 3086 */ 3087 public void invalidateOptionsMenu() { 3088 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3089 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3090 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3091 } 3092 } 3093 3094 /** 3095 * Initialize the contents of the Activity's standard options menu. You 3096 * should place your menu items in to <var>menu</var>. 3097 * 3098 * <p>This is only called once, the first time the options menu is 3099 * displayed. To update the menu every time it is displayed, see 3100 * {@link #onPrepareOptionsMenu}. 3101 * 3102 * <p>The default implementation populates the menu with standard system 3103 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3104 * they will be correctly ordered with application-defined menu items. 3105 * Deriving classes should always call through to the base implementation. 3106 * 3107 * <p>You can safely hold on to <var>menu</var> (and any items created 3108 * from it), making modifications to it as desired, until the next 3109 * time onCreateOptionsMenu() is called. 3110 * 3111 * <p>When you add items to the menu, you can implement the Activity's 3112 * {@link #onOptionsItemSelected} method to handle them there. 3113 * 3114 * @param menu The options menu in which you place your items. 3115 * 3116 * @return You must return true for the menu to be displayed; 3117 * if you return false it will not be shown. 3118 * 3119 * @see #onPrepareOptionsMenu 3120 * @see #onOptionsItemSelected 3121 */ 3122 public boolean onCreateOptionsMenu(Menu menu) { 3123 if (mParent != null) { 3124 return mParent.onCreateOptionsMenu(menu); 3125 } 3126 return true; 3127 } 3128 3129 /** 3130 * Prepare the Screen's standard options menu to be displayed. This is 3131 * called right before the menu is shown, every time it is shown. You can 3132 * use this method to efficiently enable/disable items or otherwise 3133 * dynamically modify the contents. 3134 * 3135 * <p>The default implementation updates the system menu items based on the 3136 * activity's state. Deriving classes should always call through to the 3137 * base class implementation. 3138 * 3139 * @param menu The options menu as last shown or first initialized by 3140 * onCreateOptionsMenu(). 3141 * 3142 * @return You must return true for the menu to be displayed; 3143 * if you return false it will not be shown. 3144 * 3145 * @see #onCreateOptionsMenu 3146 */ 3147 public boolean onPrepareOptionsMenu(Menu menu) { 3148 if (mParent != null) { 3149 return mParent.onPrepareOptionsMenu(menu); 3150 } 3151 return true; 3152 } 3153 3154 /** 3155 * This hook is called whenever an item in your options menu is selected. 3156 * The default implementation simply returns false to have the normal 3157 * processing happen (calling the item's Runnable or sending a message to 3158 * its Handler as appropriate). You can use this method for any items 3159 * for which you would like to do processing without those other 3160 * facilities. 3161 * 3162 * <p>Derived classes should call through to the base class for it to 3163 * perform the default menu handling.</p> 3164 * 3165 * @param item The menu item that was selected. 3166 * 3167 * @return boolean Return false to allow normal menu processing to 3168 * proceed, true to consume it here. 3169 * 3170 * @see #onCreateOptionsMenu 3171 */ 3172 public boolean onOptionsItemSelected(MenuItem item) { 3173 if (mParent != null) { 3174 return mParent.onOptionsItemSelected(item); 3175 } 3176 return false; 3177 } 3178 3179 /** 3180 * This method is called whenever the user chooses to navigate Up within your application's 3181 * activity hierarchy from the action bar. 3182 * 3183 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3184 * was specified in the manifest for this activity or an activity-alias to it, 3185 * default Up navigation will be handled automatically. If any activity 3186 * along the parent chain requires extra Intent arguments, the Activity subclass 3187 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3188 * to supply those arguments.</p> 3189 * 3190 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3191 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3192 * from the design guide for more information about navigating within your app.</p> 3193 * 3194 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3195 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3196 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3197 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3198 * 3199 * @return true if Up navigation completed successfully and this Activity was finished, 3200 * false otherwise. 3201 */ 3202 public boolean onNavigateUp() { 3203 // Automatically handle hierarchical Up navigation if the proper 3204 // metadata is available. 3205 Intent upIntent = getParentActivityIntent(); 3206 if (upIntent != null) { 3207 if (mActivityInfo.taskAffinity == null) { 3208 // Activities with a null affinity are special; they really shouldn't 3209 // specify a parent activity intent in the first place. Just finish 3210 // the current activity and call it a day. 3211 finish(); 3212 } else if (shouldUpRecreateTask(upIntent)) { 3213 TaskStackBuilder b = TaskStackBuilder.create(this); 3214 onCreateNavigateUpTaskStack(b); 3215 onPrepareNavigateUpTaskStack(b); 3216 b.startActivities(); 3217 3218 // We can't finishAffinity if we have a result. 3219 // Fall back and simply finish the current activity instead. 3220 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3221 // Tell the developer what's going on to avoid hair-pulling. 3222 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3223 finish(); 3224 } else { 3225 finishAffinity(); 3226 } 3227 } else { 3228 navigateUpTo(upIntent); 3229 } 3230 return true; 3231 } 3232 return false; 3233 } 3234 3235 /** 3236 * This is called when a child activity of this one attempts to navigate up. 3237 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3238 * 3239 * @param child The activity making the call. 3240 */ 3241 public boolean onNavigateUpFromChild(Activity child) { 3242 return onNavigateUp(); 3243 } 3244 3245 /** 3246 * Define the synthetic task stack that will be generated during Up navigation from 3247 * a different task. 3248 * 3249 * <p>The default implementation of this method adds the parent chain of this activity 3250 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3251 * may choose to override this method to construct the desired task stack in a different 3252 * way.</p> 3253 * 3254 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3255 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3256 * returned by {@link #getParentActivityIntent()}.</p> 3257 * 3258 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3259 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3260 * 3261 * @param builder An empty TaskStackBuilder - the application should add intents representing 3262 * the desired task stack 3263 */ 3264 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3265 builder.addParentStack(this); 3266 } 3267 3268 /** 3269 * Prepare the synthetic task stack that will be generated during Up navigation 3270 * from a different task. 3271 * 3272 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3273 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3274 * If any extra data should be added to these intents before launching the new task, 3275 * the application should override this method and add that data here.</p> 3276 * 3277 * @param builder A TaskStackBuilder that has been populated with Intents by 3278 * onCreateNavigateUpTaskStack. 3279 */ 3280 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3281 } 3282 3283 /** 3284 * This hook is called whenever the options menu is being closed (either by the user canceling 3285 * the menu with the back/menu button, or when an item is selected). 3286 * 3287 * @param menu The options menu as last shown or first initialized by 3288 * onCreateOptionsMenu(). 3289 */ 3290 public void onOptionsMenuClosed(Menu menu) { 3291 if (mParent != null) { 3292 mParent.onOptionsMenuClosed(menu); 3293 } 3294 } 3295 3296 /** 3297 * Programmatically opens the options menu. If the options menu is already 3298 * open, this method does nothing. 3299 */ 3300 public void openOptionsMenu() { 3301 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3302 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3303 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3304 } 3305 } 3306 3307 /** 3308 * Progammatically closes the options menu. If the options menu is already 3309 * closed, this method does nothing. 3310 */ 3311 public void closeOptionsMenu() { 3312 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL)) { 3313 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3314 } 3315 } 3316 3317 /** 3318 * Called when a context menu for the {@code view} is about to be shown. 3319 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3320 * time the context menu is about to be shown and should be populated for 3321 * the view (or item inside the view for {@link AdapterView} subclasses, 3322 * this can be found in the {@code menuInfo})). 3323 * <p> 3324 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3325 * item has been selected. 3326 * <p> 3327 * It is not safe to hold onto the context menu after this method returns. 3328 * 3329 */ 3330 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3331 } 3332 3333 /** 3334 * Registers a context menu to be shown for the given view (multiple views 3335 * can show the context menu). This method will set the 3336 * {@link OnCreateContextMenuListener} on the view to this activity, so 3337 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3338 * called when it is time to show the context menu. 3339 * 3340 * @see #unregisterForContextMenu(View) 3341 * @param view The view that should show a context menu. 3342 */ 3343 public void registerForContextMenu(View view) { 3344 view.setOnCreateContextMenuListener(this); 3345 } 3346 3347 /** 3348 * Prevents a context menu to be shown for the given view. This method will remove the 3349 * {@link OnCreateContextMenuListener} on the view. 3350 * 3351 * @see #registerForContextMenu(View) 3352 * @param view The view that should stop showing a context menu. 3353 */ 3354 public void unregisterForContextMenu(View view) { 3355 view.setOnCreateContextMenuListener(null); 3356 } 3357 3358 /** 3359 * Programmatically opens the context menu for a particular {@code view}. 3360 * The {@code view} should have been added via 3361 * {@link #registerForContextMenu(View)}. 3362 * 3363 * @param view The view to show the context menu for. 3364 */ 3365 public void openContextMenu(View view) { 3366 view.showContextMenu(); 3367 } 3368 3369 /** 3370 * Programmatically closes the most recently opened context menu, if showing. 3371 */ 3372 public void closeContextMenu() { 3373 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3374 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3375 } 3376 } 3377 3378 /** 3379 * This hook is called whenever an item in a context menu is selected. The 3380 * default implementation simply returns false to have the normal processing 3381 * happen (calling the item's Runnable or sending a message to its Handler 3382 * as appropriate). You can use this method for any items for which you 3383 * would like to do processing without those other facilities. 3384 * <p> 3385 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3386 * View that added this menu item. 3387 * <p> 3388 * Derived classes should call through to the base class for it to perform 3389 * the default menu handling. 3390 * 3391 * @param item The context menu item that was selected. 3392 * @return boolean Return false to allow normal context menu processing to 3393 * proceed, true to consume it here. 3394 */ 3395 public boolean onContextItemSelected(MenuItem item) { 3396 if (mParent != null) { 3397 return mParent.onContextItemSelected(item); 3398 } 3399 return false; 3400 } 3401 3402 /** 3403 * This hook is called whenever the context menu is being closed (either by 3404 * the user canceling the menu with the back/menu button, or when an item is 3405 * selected). 3406 * 3407 * @param menu The context menu that is being closed. 3408 */ 3409 public void onContextMenuClosed(Menu menu) { 3410 if (mParent != null) { 3411 mParent.onContextMenuClosed(menu); 3412 } 3413 } 3414 3415 /** 3416 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3417 */ 3418 @Deprecated 3419 protected Dialog onCreateDialog(int id) { 3420 return null; 3421 } 3422 3423 /** 3424 * Callback for creating dialogs that are managed (saved and restored) for you 3425 * by the activity. The default implementation calls through to 3426 * {@link #onCreateDialog(int)} for compatibility. 3427 * 3428 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3429 * or later, consider instead using a {@link DialogFragment} instead.</em> 3430 * 3431 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3432 * this method the first time, and hang onto it thereafter. Any dialog 3433 * that is created by this method will automatically be saved and restored 3434 * for you, including whether it is showing. 3435 * 3436 * <p>If you would like the activity to manage saving and restoring dialogs 3437 * for you, you should override this method and handle any ids that are 3438 * passed to {@link #showDialog}. 3439 * 3440 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3441 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3442 * 3443 * @param id The id of the dialog. 3444 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3445 * @return The dialog. If you return null, the dialog will not be created. 3446 * 3447 * @see #onPrepareDialog(int, Dialog, Bundle) 3448 * @see #showDialog(int, Bundle) 3449 * @see #dismissDialog(int) 3450 * @see #removeDialog(int) 3451 * 3452 * @deprecated Use the new {@link DialogFragment} class with 3453 * {@link FragmentManager} instead; this is also 3454 * available on older platforms through the Android compatibility package. 3455 */ 3456 @Nullable 3457 @Deprecated 3458 protected Dialog onCreateDialog(int id, Bundle args) { 3459 return onCreateDialog(id); 3460 } 3461 3462 /** 3463 * @deprecated Old no-arguments version of 3464 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3465 */ 3466 @Deprecated 3467 protected void onPrepareDialog(int id, Dialog dialog) { 3468 dialog.setOwnerActivity(this); 3469 } 3470 3471 /** 3472 * Provides an opportunity to prepare a managed dialog before it is being 3473 * shown. The default implementation calls through to 3474 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3475 * 3476 * <p> 3477 * Override this if you need to update a managed dialog based on the state 3478 * of the application each time it is shown. For example, a time picker 3479 * dialog might want to be updated with the current time. You should call 3480 * through to the superclass's implementation. The default implementation 3481 * will set this Activity as the owner activity on the Dialog. 3482 * 3483 * @param id The id of the managed dialog. 3484 * @param dialog The dialog. 3485 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3486 * @see #onCreateDialog(int, Bundle) 3487 * @see #showDialog(int) 3488 * @see #dismissDialog(int) 3489 * @see #removeDialog(int) 3490 * 3491 * @deprecated Use the new {@link DialogFragment} class with 3492 * {@link FragmentManager} instead; this is also 3493 * available on older platforms through the Android compatibility package. 3494 */ 3495 @Deprecated 3496 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3497 onPrepareDialog(id, dialog); 3498 } 3499 3500 /** 3501 * Simple version of {@link #showDialog(int, Bundle)} that does not 3502 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3503 * with null arguments. 3504 * 3505 * @deprecated Use the new {@link DialogFragment} class with 3506 * {@link FragmentManager} instead; this is also 3507 * available on older platforms through the Android compatibility package. 3508 */ 3509 @Deprecated 3510 public final void showDialog(int id) { 3511 showDialog(id, null); 3512 } 3513 3514 /** 3515 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3516 * will be made with the same id the first time this is called for a given 3517 * id. From thereafter, the dialog will be automatically saved and restored. 3518 * 3519 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3520 * or later, consider instead using a {@link DialogFragment} instead.</em> 3521 * 3522 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3523 * be made to provide an opportunity to do any timely preparation. 3524 * 3525 * @param id The id of the managed dialog. 3526 * @param args Arguments to pass through to the dialog. These will be saved 3527 * and restored for you. Note that if the dialog is already created, 3528 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3529 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3530 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3531 * @return Returns true if the Dialog was created; false is returned if 3532 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3533 * 3534 * @see Dialog 3535 * @see #onCreateDialog(int, Bundle) 3536 * @see #onPrepareDialog(int, Dialog, Bundle) 3537 * @see #dismissDialog(int) 3538 * @see #removeDialog(int) 3539 * 3540 * @deprecated Use the new {@link DialogFragment} class with 3541 * {@link FragmentManager} instead; this is also 3542 * available on older platforms through the Android compatibility package. 3543 */ 3544 @Nullable 3545 @Deprecated 3546 public final boolean showDialog(int id, Bundle args) { 3547 if (mManagedDialogs == null) { 3548 mManagedDialogs = new SparseArray<ManagedDialog>(); 3549 } 3550 ManagedDialog md = mManagedDialogs.get(id); 3551 if (md == null) { 3552 md = new ManagedDialog(); 3553 md.mDialog = createDialog(id, null, args); 3554 if (md.mDialog == null) { 3555 return false; 3556 } 3557 mManagedDialogs.put(id, md); 3558 } 3559 3560 md.mArgs = args; 3561 onPrepareDialog(id, md.mDialog, args); 3562 md.mDialog.show(); 3563 return true; 3564 } 3565 3566 /** 3567 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3568 * 3569 * @param id The id of the managed dialog. 3570 * 3571 * @throws IllegalArgumentException if the id was not previously shown via 3572 * {@link #showDialog(int)}. 3573 * 3574 * @see #onCreateDialog(int, Bundle) 3575 * @see #onPrepareDialog(int, Dialog, Bundle) 3576 * @see #showDialog(int) 3577 * @see #removeDialog(int) 3578 * 3579 * @deprecated Use the new {@link DialogFragment} class with 3580 * {@link FragmentManager} instead; this is also 3581 * available on older platforms through the Android compatibility package. 3582 */ 3583 @Deprecated 3584 public final void dismissDialog(int id) { 3585 if (mManagedDialogs == null) { 3586 throw missingDialog(id); 3587 } 3588 3589 final ManagedDialog md = mManagedDialogs.get(id); 3590 if (md == null) { 3591 throw missingDialog(id); 3592 } 3593 md.mDialog.dismiss(); 3594 } 3595 3596 /** 3597 * Creates an exception to throw if a user passed in a dialog id that is 3598 * unexpected. 3599 */ 3600 private IllegalArgumentException missingDialog(int id) { 3601 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3602 + "shown via Activity#showDialog"); 3603 } 3604 3605 /** 3606 * Removes any internal references to a dialog managed by this Activity. 3607 * If the dialog is showing, it will dismiss it as part of the clean up. 3608 * 3609 * <p>This can be useful if you know that you will never show a dialog again and 3610 * want to avoid the overhead of saving and restoring it in the future. 3611 * 3612 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3613 * will not throw an exception if you try to remove an ID that does not 3614 * currently have an associated dialog.</p> 3615 * 3616 * @param id The id of the managed dialog. 3617 * 3618 * @see #onCreateDialog(int, Bundle) 3619 * @see #onPrepareDialog(int, Dialog, Bundle) 3620 * @see #showDialog(int) 3621 * @see #dismissDialog(int) 3622 * 3623 * @deprecated Use the new {@link DialogFragment} class with 3624 * {@link FragmentManager} instead; this is also 3625 * available on older platforms through the Android compatibility package. 3626 */ 3627 @Deprecated 3628 public final void removeDialog(int id) { 3629 if (mManagedDialogs != null) { 3630 final ManagedDialog md = mManagedDialogs.get(id); 3631 if (md != null) { 3632 md.mDialog.dismiss(); 3633 mManagedDialogs.remove(id); 3634 } 3635 } 3636 } 3637 3638 /** 3639 * This hook is called when the user signals the desire to start a search. 3640 * 3641 * <p>You can use this function as a simple way to launch the search UI, in response to a 3642 * menu item, search button, or other widgets within your activity. Unless overidden, 3643 * calling this function is the same as calling 3644 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3645 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3646 * 3647 * <p>You can override this function to force global search, e.g. in response to a dedicated 3648 * search key, or to block search entirely (by simply returning false). 3649 * 3650 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 3651 * implementation changes to simply return false and you must supply your own custom 3652 * implementation if you want to support search.</p> 3653 * 3654 * @param searchEvent The {@link SearchEvent} that signaled this search. 3655 * @return Returns {@code true} if search launched, and {@code false} if the activity does 3656 * not respond to search. The default implementation always returns {@code true}, except 3657 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 3658 * 3659 * @see android.app.SearchManager 3660 */ 3661 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 3662 mSearchEvent = searchEvent; 3663 boolean result = onSearchRequested(); 3664 mSearchEvent = null; 3665 return result; 3666 } 3667 3668 /** 3669 * @see #onSearchRequested(SearchEvent) 3670 */ 3671 public boolean onSearchRequested() { 3672 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 3673 != Configuration.UI_MODE_TYPE_TELEVISION) { 3674 startSearch(null, false, null, false); 3675 return true; 3676 } else { 3677 return false; 3678 } 3679 } 3680 3681 /** 3682 * During the onSearchRequested() callbacks, this function will return the 3683 * {@link SearchEvent} that triggered the callback, if it exists. 3684 * 3685 * @return SearchEvent The SearchEvent that triggered the {@link 3686 * #onSearchRequested} callback. 3687 */ 3688 public final SearchEvent getSearchEvent() { 3689 return mSearchEvent; 3690 } 3691 3692 /** 3693 * This hook is called to launch the search UI. 3694 * 3695 * <p>It is typically called from onSearchRequested(), either directly from 3696 * Activity.onSearchRequested() or from an overridden version in any given 3697 * Activity. If your goal is simply to activate search, it is preferred to call 3698 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3699 * is to inject specific data such as context data, it is preferred to <i>override</i> 3700 * onSearchRequested(), so that any callers to it will benefit from the override. 3701 * 3702 * @param initialQuery Any non-null non-empty string will be inserted as 3703 * pre-entered text in the search query box. 3704 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3705 * any further typing will replace it. This is useful for cases where an entire pre-formed 3706 * query is being inserted. If false, the selection point will be placed at the end of the 3707 * inserted query. This is useful when the inserted query is text that the user entered, 3708 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3709 * if initialQuery is a non-empty string.</i> 3710 * @param appSearchData An application can insert application-specific 3711 * context here, in order to improve quality or specificity of its own 3712 * searches. This data will be returned with SEARCH intent(s). Null if 3713 * no extra data is required. 3714 * @param globalSearch If false, this will only launch the search that has been specifically 3715 * defined by the application (which is usually defined as a local search). If no default 3716 * search is defined in the current application or activity, global search will be launched. 3717 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3718 * 3719 * @see android.app.SearchManager 3720 * @see #onSearchRequested 3721 */ 3722 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3723 @Nullable Bundle appSearchData, boolean globalSearch) { 3724 ensureSearchManager(); 3725 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3726 appSearchData, globalSearch); 3727 } 3728 3729 /** 3730 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3731 * the search dialog. Made available for testing purposes. 3732 * 3733 * @param query The query to trigger. If empty, the request will be ignored. 3734 * @param appSearchData An application can insert application-specific 3735 * context here, in order to improve quality or specificity of its own 3736 * searches. This data will be returned with SEARCH intent(s). Null if 3737 * no extra data is required. 3738 */ 3739 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3740 ensureSearchManager(); 3741 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3742 } 3743 3744 /** 3745 * Request that key events come to this activity. Use this if your 3746 * activity has no views with focus, but the activity still wants 3747 * a chance to process key events. 3748 * 3749 * @see android.view.Window#takeKeyEvents 3750 */ 3751 public void takeKeyEvents(boolean get) { 3752 getWindow().takeKeyEvents(get); 3753 } 3754 3755 /** 3756 * Enable extended window features. This is a convenience for calling 3757 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3758 * 3759 * @param featureId The desired feature as defined in 3760 * {@link android.view.Window}. 3761 * @return Returns true if the requested feature is supported and now 3762 * enabled. 3763 * 3764 * @see android.view.Window#requestFeature 3765 */ 3766 public final boolean requestWindowFeature(int featureId) { 3767 return getWindow().requestFeature(featureId); 3768 } 3769 3770 /** 3771 * Convenience for calling 3772 * {@link android.view.Window#setFeatureDrawableResource}. 3773 */ 3774 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 3775 getWindow().setFeatureDrawableResource(featureId, resId); 3776 } 3777 3778 /** 3779 * Convenience for calling 3780 * {@link android.view.Window#setFeatureDrawableUri}. 3781 */ 3782 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3783 getWindow().setFeatureDrawableUri(featureId, uri); 3784 } 3785 3786 /** 3787 * Convenience for calling 3788 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3789 */ 3790 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3791 getWindow().setFeatureDrawable(featureId, drawable); 3792 } 3793 3794 /** 3795 * Convenience for calling 3796 * {@link android.view.Window#setFeatureDrawableAlpha}. 3797 */ 3798 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3799 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3800 } 3801 3802 /** 3803 * Convenience for calling 3804 * {@link android.view.Window#getLayoutInflater}. 3805 */ 3806 @NonNull 3807 public LayoutInflater getLayoutInflater() { 3808 return getWindow().getLayoutInflater(); 3809 } 3810 3811 /** 3812 * Returns a {@link MenuInflater} with this context. 3813 */ 3814 @NonNull 3815 public MenuInflater getMenuInflater() { 3816 // Make sure that action views can get an appropriate theme. 3817 if (mMenuInflater == null) { 3818 initWindowDecorActionBar(); 3819 if (mActionBar != null) { 3820 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3821 } else { 3822 mMenuInflater = new MenuInflater(this); 3823 } 3824 } 3825 return mMenuInflater; 3826 } 3827 3828 @Override 3829 public void setTheme(int resid) { 3830 super.setTheme(resid); 3831 mWindow.setTheme(resid); 3832 } 3833 3834 @Override 3835 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 3836 boolean first) { 3837 if (mParent == null) { 3838 super.onApplyThemeResource(theme, resid, first); 3839 } else { 3840 try { 3841 theme.setTo(mParent.getTheme()); 3842 } catch (Exception e) { 3843 // Empty 3844 } 3845 theme.applyStyle(resid, false); 3846 } 3847 3848 // Get the primary color and update the TaskDescription for this activity 3849 if (theme != null) { 3850 TypedArray a = theme.obtainStyledAttributes(com.android.internal.R.styleable.Theme); 3851 int colorPrimary = a.getColor(com.android.internal.R.styleable.Theme_colorPrimary, 0); 3852 a.recycle(); 3853 if (colorPrimary != 0) { 3854 ActivityManager.TaskDescription v = new ActivityManager.TaskDescription(null, null, 3855 colorPrimary); 3856 setTaskDescription(v); 3857 } 3858 } 3859 } 3860 3861 /** 3862 * Requests permissions to be granted to this application. These permissions 3863 * must be requested in your manifest, they should not be granted to your app, 3864 * and they should have protection level {@link android.content.pm.PermissionInfo 3865 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 3866 * the platform or a third-party app. 3867 * <p> 3868 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 3869 * are granted at install time if requested in the manifest. Signature permissions 3870 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 3871 * install time if requested in the manifest and the signature of your app matches 3872 * the signature of the app declaring the permissions. 3873 * </p> 3874 * <p> 3875 * If your app does not have the requested permissions the user will be presented 3876 * with UI for accepting them. After the user has accepted or rejected the 3877 * requested permissions you will receive a callback on {@link 3878 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 3879 * permissions were granted or not. 3880 * </p> 3881 * <p> 3882 * Note that requesting a permission does not guarantee it will be granted and 3883 * your app should be able to run without having this permission. 3884 * </p> 3885 * <p> 3886 * This method may start an activity allowing the user to choose which permissions 3887 * to grant and which to reject. Hence, you should be prepared that your activity 3888 * may be paused and resumed. Further, granting some permissions may require 3889 * a restart of you application. In such a case, the system will recreate the 3890 * activity stack before delivering the result to {@link 3891 * #onRequestPermissionsResult(int, String[], int[])}. 3892 * </p> 3893 * <p> 3894 * When checking whether you have a permission you should use {@link 3895 * #checkSelfPermission(String)}. 3896 * </p> 3897 * <p> 3898 * Calling this API for permissions already granted to your app would show UI 3899 * to the user to decide whether the app can still hold these permissions. This 3900 * can be useful if the way your app uses data guarded by the permissions 3901 * changes significantly. 3902 * </p> 3903 * <p> 3904 * You cannot request a permission if your activity sets {@link 3905 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 3906 * <code>true</code> because in this case the activity would not receive 3907 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 3908 * </p> 3909 * <p> 3910 * A sample permissions request looks like this: 3911 * </p> 3912 * <code><pre><p> 3913 * private void showContacts() { 3914 * if (checkSelfPermission(Manifest.permission.READ_CONTACTS) 3915 * != PackageManager.PERMISSION_GRANTED) { 3916 * requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, 3917 * PERMISSIONS_REQUEST_READ_CONTACTS); 3918 * } else { 3919 * doShowContacts(); 3920 * } 3921 * } 3922 * 3923 * {@literal @}Override 3924 * public void onRequestPermissionsResult(int requestCode, String[] permissions, 3925 * int[] grantResults) { 3926 * if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS 3927 * && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 3928 * showContacts(); 3929 * } 3930 * } 3931 * </code></pre></p> 3932 * 3933 * @param permissions The requested permissions. 3934 * @param requestCode Application specific request code to match with a result 3935 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 3936 * Should be >= 0. 3937 * 3938 * @see #onRequestPermissionsResult(int, String[], int[]) 3939 * @see #checkSelfPermission(String) 3940 * @see #shouldShowRequestPermissionRationale(String) 3941 */ 3942 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 3943 if (mHasCurrentPermissionsRequest) { 3944 Log.w(TAG, "Can reqeust only one set of permissions at a time"); 3945 // Dispatch the callback with empty arrays which means a cancellation. 3946 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 3947 return; 3948 } 3949 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 3950 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 3951 mHasCurrentPermissionsRequest = true; 3952 } 3953 3954 /** 3955 * Callback for the result from requesting permissions. This method 3956 * is invoked for every call on {@link #requestPermissions(String[], int)}. 3957 * <p> 3958 * <strong>Note:</strong> It is possible that the permissions request interaction 3959 * with the user is interrupted. In this case you will receive empty permissions 3960 * and results arrays which should be treated as a cancellation. 3961 * </p> 3962 * 3963 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 3964 * @param permissions The requested permissions. Never null. 3965 * @param grantResults The grant results for the corresponding permissions 3966 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 3967 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 3968 * 3969 * @see #requestPermissions(String[], int) 3970 */ 3971 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 3972 @NonNull int[] grantResults) { 3973 /* callback - no nothing */ 3974 } 3975 3976 /** 3977 * Gets whether you should show UI with rationale for requesting a permission. 3978 * You should do this only if you do not have the permission and the context in 3979 * which the permission is requested does not clearly communicate to the user 3980 * what would be the benefit from granting this permission. 3981 * <p> 3982 * For example, if you write a camera app, requesting the camera permission 3983 * would be expected by the user and no rationale for why it is requested is 3984 * needed. If however, the app needs location for tagging photos then a non-tech 3985 * savvy user may wonder how location is related to taking photos. In this case 3986 * you may choose to show UI with rationale of requesting this permission. 3987 * </p> 3988 * 3989 * @param permission A permission your app wants to request. 3990 * @return Whether you can show permission rationale UI. 3991 * 3992 * @see #checkSelfPermission(String) 3993 * @see #requestPermissions(String[], int) 3994 * @see #onRequestPermissionsResult(int, String[], int[]) 3995 */ 3996 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 3997 return getPackageManager().shouldShowRequestPermissionRationale(permission); 3998 } 3999 4000 /** 4001 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4002 * with no options. 4003 * 4004 * @param intent The intent to start. 4005 * @param requestCode If >= 0, this code will be returned in 4006 * onActivityResult() when the activity exits. 4007 * 4008 * @throws android.content.ActivityNotFoundException 4009 * 4010 * @see #startActivity 4011 */ 4012 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4013 startActivityForResult(intent, requestCode, null); 4014 } 4015 4016 /** 4017 * Launch an activity for which you would like a result when it finished. 4018 * When this activity exits, your 4019 * onActivityResult() method will be called with the given requestCode. 4020 * Using a negative requestCode is the same as calling 4021 * {@link #startActivity} (the activity is not launched as a sub-activity). 4022 * 4023 * <p>Note that this method should only be used with Intent protocols 4024 * that are defined to return a result. In other protocols (such as 4025 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4026 * not get the result when you expect. For example, if the activity you 4027 * are launching uses the singleTask launch mode, it will not run in your 4028 * task and thus you will immediately receive a cancel result. 4029 * 4030 * <p>As a special case, if you call startActivityForResult() with a requestCode 4031 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4032 * activity, then your window will not be displayed until a result is 4033 * returned back from the started activity. This is to avoid visible 4034 * flickering when redirecting to another activity. 4035 * 4036 * <p>This method throws {@link android.content.ActivityNotFoundException} 4037 * if there was no Activity found to run the given Intent. 4038 * 4039 * @param intent The intent to start. 4040 * @param requestCode If >= 0, this code will be returned in 4041 * onActivityResult() when the activity exits. 4042 * @param options Additional options for how the Activity should be started. 4043 * See {@link android.content.Context#startActivity(Intent, Bundle) 4044 * Context.startActivity(Intent, Bundle)} for more details. 4045 * 4046 * @throws android.content.ActivityNotFoundException 4047 * 4048 * @see #startActivity 4049 */ 4050 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4051 @Nullable Bundle options) { 4052 if (mParent == null) { 4053 Instrumentation.ActivityResult ar = 4054 mInstrumentation.execStartActivity( 4055 this, mMainThread.getApplicationThread(), mToken, this, 4056 intent, requestCode, options); 4057 if (ar != null) { 4058 mMainThread.sendActivityResult( 4059 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4060 ar.getResultData()); 4061 } 4062 if (requestCode >= 0) { 4063 // If this start is requesting a result, we can avoid making 4064 // the activity visible until the result is received. Setting 4065 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4066 // activity hidden during this time, to avoid flickering. 4067 // This can only be done when a result is requested because 4068 // that guarantees we will get information back when the 4069 // activity is finished, no matter what happens to it. 4070 mStartedActivity = true; 4071 } 4072 4073 cancelInputsAndStartExitTransition(options); 4074 // TODO Consider clearing/flushing other event sources and events for child windows. 4075 } else { 4076 if (options != null) { 4077 mParent.startActivityFromChild(this, intent, requestCode, options); 4078 } else { 4079 // Note we want to go through this method for compatibility with 4080 // existing applications that may have overridden it. 4081 mParent.startActivityFromChild(this, intent, requestCode); 4082 } 4083 } 4084 } 4085 4086 /** 4087 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4088 * 4089 * @param options The ActivityOptions bundle used to start an Activity. 4090 */ 4091 private void cancelInputsAndStartExitTransition(Bundle options) { 4092 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4093 if (decor != null) { 4094 decor.cancelPendingInputEvents(); 4095 } 4096 if (options != null && !isTopOfTask()) { 4097 mActivityTransitionState.startExitOutTransition(this, options); 4098 } 4099 } 4100 4101 /** 4102 * @hide Implement to provide correct calling token. 4103 */ 4104 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4105 startActivityForResultAsUser(intent, requestCode, null, user); 4106 } 4107 4108 /** 4109 * @hide Implement to provide correct calling token. 4110 */ 4111 public void startActivityForResultAsUser(Intent intent, int requestCode, 4112 @Nullable Bundle options, UserHandle user) { 4113 if (mParent != null) { 4114 throw new RuntimeException("Can't be called from a child"); 4115 } 4116 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4117 this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, 4118 options, user); 4119 if (ar != null) { 4120 mMainThread.sendActivityResult( 4121 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4122 } 4123 if (requestCode >= 0) { 4124 // If this start is requesting a result, we can avoid making 4125 // the activity visible until the result is received. Setting 4126 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4127 // activity hidden during this time, to avoid flickering. 4128 // This can only be done when a result is requested because 4129 // that guarantees we will get information back when the 4130 // activity is finished, no matter what happens to it. 4131 mStartedActivity = true; 4132 } 4133 4134 cancelInputsAndStartExitTransition(options); 4135 } 4136 4137 /** 4138 * @hide Implement to provide correct calling token. 4139 */ 4140 public void startActivityAsUser(Intent intent, UserHandle user) { 4141 startActivityAsUser(intent, null, user); 4142 } 4143 4144 /** 4145 * @hide Implement to provide correct calling token. 4146 */ 4147 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4148 if (mParent != null) { 4149 throw new RuntimeException("Can't be called from a child"); 4150 } 4151 Instrumentation.ActivityResult ar = 4152 mInstrumentation.execStartActivity( 4153 this, mMainThread.getApplicationThread(), mToken, this, 4154 intent, -1, options, user); 4155 if (ar != null) { 4156 mMainThread.sendActivityResult( 4157 mToken, mEmbeddedID, -1, ar.getResultCode(), 4158 ar.getResultData()); 4159 } 4160 cancelInputsAndStartExitTransition(options); 4161 } 4162 4163 /** 4164 * Start a new activity as if it was started by the activity that started our 4165 * current activity. This is for the resolver and chooser activities, which operate 4166 * as intermediaries that dispatch their intent to the target the user selects -- to 4167 * do this, they must perform all security checks including permission grants as if 4168 * their launch had come from the original activity. 4169 * @param intent The Intent to start. 4170 * @param options ActivityOptions or null. 4171 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4172 * caller it is doing the start is, is actually allowed to start the target activity. 4173 * If you set this to true, you must set an explicit component in the Intent and do any 4174 * appropriate security checks yourself. 4175 * @param userId The user the new activity should run as. 4176 * @hide 4177 */ 4178 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4179 boolean ignoreTargetSecurity, int userId) { 4180 if (mParent != null) { 4181 throw new RuntimeException("Can't be called from a child"); 4182 } 4183 Instrumentation.ActivityResult ar = 4184 mInstrumentation.execStartActivityAsCaller( 4185 this, mMainThread.getApplicationThread(), mToken, this, 4186 intent, -1, options, ignoreTargetSecurity, userId); 4187 if (ar != null) { 4188 mMainThread.sendActivityResult( 4189 mToken, mEmbeddedID, -1, ar.getResultCode(), 4190 ar.getResultData()); 4191 } 4192 cancelInputsAndStartExitTransition(options); 4193 } 4194 4195 /** 4196 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4197 * Intent, int, int, int, Bundle)} with no options. 4198 * 4199 * @param intent The IntentSender to launch. 4200 * @param requestCode If >= 0, this code will be returned in 4201 * onActivityResult() when the activity exits. 4202 * @param fillInIntent If non-null, this will be provided as the 4203 * intent parameter to {@link IntentSender#sendIntent}. 4204 * @param flagsMask Intent flags in the original IntentSender that you 4205 * would like to change. 4206 * @param flagsValues Desired values for any bits set in 4207 * <var>flagsMask</var> 4208 * @param extraFlags Always set to 0. 4209 */ 4210 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4211 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4212 throws IntentSender.SendIntentException { 4213 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4214 flagsValues, extraFlags, null); 4215 } 4216 4217 /** 4218 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4219 * to use a IntentSender to describe the activity to be started. If 4220 * the IntentSender is for an activity, that activity will be started 4221 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4222 * here; otherwise, its associated action will be executed (such as 4223 * sending a broadcast) as if you had called 4224 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4225 * 4226 * @param intent The IntentSender to launch. 4227 * @param requestCode If >= 0, this code will be returned in 4228 * onActivityResult() when the activity exits. 4229 * @param fillInIntent If non-null, this will be provided as the 4230 * intent parameter to {@link IntentSender#sendIntent}. 4231 * @param flagsMask Intent flags in the original IntentSender that you 4232 * would like to change. 4233 * @param flagsValues Desired values for any bits set in 4234 * <var>flagsMask</var> 4235 * @param extraFlags Always set to 0. 4236 * @param options Additional options for how the Activity should be started. 4237 * See {@link android.content.Context#startActivity(Intent, Bundle) 4238 * Context.startActivity(Intent, Bundle)} for more details. If options 4239 * have also been supplied by the IntentSender, options given here will 4240 * override any that conflict with those given by the IntentSender. 4241 */ 4242 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4243 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4244 Bundle options) throws IntentSender.SendIntentException { 4245 if (mParent == null) { 4246 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4247 flagsMask, flagsValues, this, options); 4248 } else if (options != null) { 4249 mParent.startIntentSenderFromChild(this, intent, requestCode, 4250 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4251 } else { 4252 // Note we want to go through this call for compatibility with 4253 // existing applications that may have overridden the method. 4254 mParent.startIntentSenderFromChild(this, intent, requestCode, 4255 fillInIntent, flagsMask, flagsValues, extraFlags); 4256 } 4257 } 4258 4259 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 4260 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 4261 Bundle options) 4262 throws IntentSender.SendIntentException { 4263 try { 4264 String resolvedType = null; 4265 if (fillInIntent != null) { 4266 fillInIntent.migrateExtraStreamToClipData(); 4267 fillInIntent.prepareToLeaveProcess(); 4268 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4269 } 4270 int result = ActivityManagerNative.getDefault() 4271 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 4272 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 4273 requestCode, flagsMask, flagsValues, options); 4274 if (result == ActivityManager.START_CANCELED) { 4275 throw new IntentSender.SendIntentException(); 4276 } 4277 Instrumentation.checkStartActivityResult(result, null); 4278 } catch (RemoteException e) { 4279 } 4280 if (requestCode >= 0) { 4281 // If this start is requesting a result, we can avoid making 4282 // the activity visible until the result is received. Setting 4283 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4284 // activity hidden during this time, to avoid flickering. 4285 // This can only be done when a result is requested because 4286 // that guarantees we will get information back when the 4287 // activity is finished, no matter what happens to it. 4288 mStartedActivity = true; 4289 } 4290 } 4291 4292 /** 4293 * Same as {@link #startActivity(Intent, Bundle)} with no options 4294 * specified. 4295 * 4296 * @param intent The intent to start. 4297 * 4298 * @throws android.content.ActivityNotFoundException 4299 * 4300 * @see {@link #startActivity(Intent, Bundle)} 4301 * @see #startActivityForResult 4302 */ 4303 @Override 4304 public void startActivity(Intent intent) { 4305 this.startActivity(intent, null); 4306 } 4307 4308 /** 4309 * Launch a new activity. You will not receive any information about when 4310 * the activity exits. This implementation overrides the base version, 4311 * providing information about 4312 * the activity performing the launch. Because of this additional 4313 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4314 * required; if not specified, the new activity will be added to the 4315 * task of the caller. 4316 * 4317 * <p>This method throws {@link android.content.ActivityNotFoundException} 4318 * if there was no Activity found to run the given Intent. 4319 * 4320 * @param intent The intent to start. 4321 * @param options Additional options for how the Activity should be started. 4322 * See {@link android.content.Context#startActivity(Intent, Bundle) 4323 * Context.startActivity(Intent, Bundle)} for more details. 4324 * 4325 * @throws android.content.ActivityNotFoundException 4326 * 4327 * @see {@link #startActivity(Intent)} 4328 * @see #startActivityForResult 4329 */ 4330 @Override 4331 public void startActivity(Intent intent, @Nullable Bundle options) { 4332 if (options != null) { 4333 startActivityForResult(intent, -1, options); 4334 } else { 4335 // Note we want to go through this call for compatibility with 4336 // applications that may have overridden the method. 4337 startActivityForResult(intent, -1); 4338 } 4339 } 4340 4341 /** 4342 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4343 * specified. 4344 * 4345 * @param intents The intents to start. 4346 * 4347 * @throws android.content.ActivityNotFoundException 4348 * 4349 * @see {@link #startActivities(Intent[], Bundle)} 4350 * @see #startActivityForResult 4351 */ 4352 @Override 4353 public void startActivities(Intent[] intents) { 4354 startActivities(intents, null); 4355 } 4356 4357 /** 4358 * Launch a new activity. You will not receive any information about when 4359 * the activity exits. This implementation overrides the base version, 4360 * providing information about 4361 * the activity performing the launch. Because of this additional 4362 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4363 * required; if not specified, the new activity will be added to the 4364 * task of the caller. 4365 * 4366 * <p>This method throws {@link android.content.ActivityNotFoundException} 4367 * if there was no Activity found to run the given Intent. 4368 * 4369 * @param intents The intents to start. 4370 * @param options Additional options for how the Activity should be started. 4371 * See {@link android.content.Context#startActivity(Intent, Bundle) 4372 * Context.startActivity(Intent, Bundle)} for more details. 4373 * 4374 * @throws android.content.ActivityNotFoundException 4375 * 4376 * @see {@link #startActivities(Intent[])} 4377 * @see #startActivityForResult 4378 */ 4379 @Override 4380 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4381 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4382 mToken, this, intents, options); 4383 } 4384 4385 /** 4386 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4387 * with no options. 4388 * 4389 * @param intent The IntentSender to launch. 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 */ 4398 public void startIntentSender(IntentSender intent, 4399 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4400 throws IntentSender.SendIntentException { 4401 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4402 extraFlags, null); 4403 } 4404 4405 /** 4406 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4407 * to start; see 4408 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4409 * for more information. 4410 * 4411 * @param intent The IntentSender to launch. 4412 * @param fillInIntent If non-null, this will be provided as the 4413 * intent parameter to {@link IntentSender#sendIntent}. 4414 * @param flagsMask Intent flags in the original IntentSender that you 4415 * would like to change. 4416 * @param flagsValues Desired values for any bits set in 4417 * <var>flagsMask</var> 4418 * @param extraFlags Always set to 0. 4419 * @param options Additional options for how the Activity should be started. 4420 * See {@link android.content.Context#startActivity(Intent, Bundle) 4421 * Context.startActivity(Intent, Bundle)} for more details. If options 4422 * have also been supplied by the IntentSender, options given here will 4423 * override any that conflict with those given by the IntentSender. 4424 */ 4425 public void startIntentSender(IntentSender intent, 4426 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4427 Bundle options) throws IntentSender.SendIntentException { 4428 if (options != null) { 4429 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4430 flagsValues, extraFlags, options); 4431 } else { 4432 // Note we want to go through this call for compatibility with 4433 // applications that may have overridden the method. 4434 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4435 flagsValues, extraFlags); 4436 } 4437 } 4438 4439 /** 4440 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4441 * with no options. 4442 * 4443 * @param intent The intent to start. 4444 * @param requestCode If >= 0, this code will be returned in 4445 * onActivityResult() when the activity exits, as described in 4446 * {@link #startActivityForResult}. 4447 * 4448 * @return If a new activity was launched then true is returned; otherwise 4449 * false is returned and you must handle the Intent yourself. 4450 * 4451 * @see #startActivity 4452 * @see #startActivityForResult 4453 */ 4454 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4455 int requestCode) { 4456 return startActivityIfNeeded(intent, requestCode, null); 4457 } 4458 4459 /** 4460 * A special variation to launch an activity only if a new activity 4461 * instance is needed to handle the given Intent. In other words, this is 4462 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4463 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4464 * singleTask or singleTop 4465 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4466 * and the activity 4467 * that handles <var>intent</var> is the same as your currently running 4468 * activity, then a new instance is not needed. In this case, instead of 4469 * the normal behavior of calling {@link #onNewIntent} this function will 4470 * return and you can handle the Intent yourself. 4471 * 4472 * <p>This function can only be called from a top-level activity; if it is 4473 * called from a child activity, a runtime exception will be thrown. 4474 * 4475 * @param intent The intent to start. 4476 * @param requestCode If >= 0, this code will be returned in 4477 * onActivityResult() when the activity exits, as described in 4478 * {@link #startActivityForResult}. 4479 * @param options Additional options for how the Activity should be started. 4480 * See {@link android.content.Context#startActivity(Intent, Bundle) 4481 * Context.startActivity(Intent, Bundle)} for more details. 4482 * 4483 * @return If a new activity was launched then true is returned; otherwise 4484 * false is returned and you must handle the Intent yourself. 4485 * 4486 * @see #startActivity 4487 * @see #startActivityForResult 4488 */ 4489 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4490 int requestCode, @Nullable Bundle options) { 4491 if (mParent == null) { 4492 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4493 try { 4494 Uri referrer = onProvideReferrer(); 4495 if (referrer != null) { 4496 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4497 } 4498 intent.migrateExtraStreamToClipData(); 4499 intent.prepareToLeaveProcess(); 4500 result = ActivityManagerNative.getDefault() 4501 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4502 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4503 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4504 null, options); 4505 } catch (RemoteException e) { 4506 // Empty 4507 } 4508 4509 Instrumentation.checkStartActivityResult(result, intent); 4510 4511 if (requestCode >= 0) { 4512 // If this start is requesting a result, we can avoid making 4513 // the activity visible until the result is received. Setting 4514 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4515 // activity hidden during this time, to avoid flickering. 4516 // This can only be done when a result is requested because 4517 // that guarantees we will get information back when the 4518 // activity is finished, no matter what happens to it. 4519 mStartedActivity = true; 4520 } 4521 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4522 } 4523 4524 throw new UnsupportedOperationException( 4525 "startActivityIfNeeded can only be called from a top-level activity"); 4526 } 4527 4528 /** 4529 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4530 * no options. 4531 * 4532 * @param intent The intent to dispatch to the next activity. For 4533 * correct behavior, this must be the same as the Intent that started 4534 * your own activity; the only changes you can make are to the extras 4535 * inside of it. 4536 * 4537 * @return Returns a boolean indicating whether there was another Activity 4538 * to start: true if there was a next activity to start, false if there 4539 * wasn't. In general, if true is returned you will then want to call 4540 * finish() on yourself. 4541 */ 4542 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 4543 return startNextMatchingActivity(intent, null); 4544 } 4545 4546 /** 4547 * Special version of starting an activity, for use when you are replacing 4548 * other activity components. You can use this to hand the Intent off 4549 * to the next Activity that can handle it. You typically call this in 4550 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4551 * 4552 * @param intent The intent to dispatch to the next activity. For 4553 * correct behavior, this must be the same as the Intent that started 4554 * your own activity; the only changes you can make are to the extras 4555 * inside of it. 4556 * @param options Additional options for how the Activity should be started. 4557 * See {@link android.content.Context#startActivity(Intent, Bundle) 4558 * Context.startActivity(Intent, Bundle)} for more details. 4559 * 4560 * @return Returns a boolean indicating whether there was another Activity 4561 * to start: true if there was a next activity to start, false if there 4562 * wasn't. In general, if true is returned you will then want to call 4563 * finish() on yourself. 4564 */ 4565 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 4566 @Nullable Bundle options) { 4567 if (mParent == null) { 4568 try { 4569 intent.migrateExtraStreamToClipData(); 4570 intent.prepareToLeaveProcess(); 4571 return ActivityManagerNative.getDefault() 4572 .startNextMatchingActivity(mToken, intent, options); 4573 } catch (RemoteException e) { 4574 // Empty 4575 } 4576 return false; 4577 } 4578 4579 throw new UnsupportedOperationException( 4580 "startNextMatchingActivity can only be called from a top-level activity"); 4581 } 4582 4583 /** 4584 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4585 * with no options. 4586 * 4587 * @param child The activity making the call. 4588 * @param intent The intent to start. 4589 * @param requestCode Reply request code. < 0 if reply is not requested. 4590 * 4591 * @throws android.content.ActivityNotFoundException 4592 * 4593 * @see #startActivity 4594 * @see #startActivityForResult 4595 */ 4596 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4597 int requestCode) { 4598 startActivityFromChild(child, intent, requestCode, null); 4599 } 4600 4601 /** 4602 * This is called when a child activity of this one calls its 4603 * {@link #startActivity} or {@link #startActivityForResult} method. 4604 * 4605 * <p>This method throws {@link android.content.ActivityNotFoundException} 4606 * if there was no Activity found to run the given Intent. 4607 * 4608 * @param child The activity making the call. 4609 * @param intent The intent to start. 4610 * @param requestCode Reply request code. < 0 if reply is not requested. 4611 * @param options Additional options for how the Activity should be started. 4612 * See {@link android.content.Context#startActivity(Intent, Bundle) 4613 * Context.startActivity(Intent, Bundle)} for more details. 4614 * 4615 * @throws android.content.ActivityNotFoundException 4616 * 4617 * @see #startActivity 4618 * @see #startActivityForResult 4619 */ 4620 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4621 int requestCode, @Nullable Bundle options) { 4622 Instrumentation.ActivityResult ar = 4623 mInstrumentation.execStartActivity( 4624 this, mMainThread.getApplicationThread(), mToken, child, 4625 intent, requestCode, options); 4626 if (ar != null) { 4627 mMainThread.sendActivityResult( 4628 mToken, child.mEmbeddedID, requestCode, 4629 ar.getResultCode(), ar.getResultData()); 4630 } 4631 cancelInputsAndStartExitTransition(options); 4632 } 4633 4634 /** 4635 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4636 * with no options. 4637 * 4638 * @param fragment The fragment making the call. 4639 * @param intent The intent to start. 4640 * @param requestCode Reply request code. < 0 if reply is not requested. 4641 * 4642 * @throws android.content.ActivityNotFoundException 4643 * 4644 * @see Fragment#startActivity 4645 * @see Fragment#startActivityForResult 4646 */ 4647 public void startActivityFromFragment(@NonNull Fragment fragment, 4648 @RequiresPermission Intent intent, int requestCode) { 4649 startActivityFromFragment(fragment, intent, requestCode, null); 4650 } 4651 4652 /** 4653 * This is called when a Fragment in this activity calls its 4654 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4655 * method. 4656 * 4657 * <p>This method throws {@link android.content.ActivityNotFoundException} 4658 * if there was no Activity found to run the given Intent. 4659 * 4660 * @param fragment The fragment making the call. 4661 * @param intent The intent to start. 4662 * @param requestCode Reply request code. < 0 if reply is not requested. 4663 * @param options Additional options for how the Activity should be started. 4664 * See {@link android.content.Context#startActivity(Intent, Bundle) 4665 * Context.startActivity(Intent, Bundle)} for more details. 4666 * 4667 * @throws android.content.ActivityNotFoundException 4668 * 4669 * @see Fragment#startActivity 4670 * @see Fragment#startActivityForResult 4671 */ 4672 public void startActivityFromFragment(@NonNull Fragment fragment, 4673 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 4674 startActivityForResult(fragment.mWho, intent, requestCode, options); 4675 } 4676 4677 /** 4678 * @hide 4679 */ 4680 @Override 4681 public void startActivityForResult( 4682 String who, Intent intent, int requestCode, @Nullable Bundle options) { 4683 Uri referrer = onProvideReferrer(); 4684 if (referrer != null) { 4685 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4686 } 4687 Instrumentation.ActivityResult ar = 4688 mInstrumentation.execStartActivity( 4689 this, mMainThread.getApplicationThread(), mToken, who, 4690 intent, requestCode, options); 4691 if (ar != null) { 4692 mMainThread.sendActivityResult( 4693 mToken, who, requestCode, 4694 ar.getResultCode(), ar.getResultData()); 4695 } 4696 cancelInputsAndStartExitTransition(options); 4697 } 4698 4699 /** 4700 * @hide 4701 */ 4702 @Override 4703 public boolean canStartActivityForResult() { 4704 return true; 4705 } 4706 4707 /** 4708 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4709 * int, Intent, int, int, int, Bundle)} with no options. 4710 */ 4711 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4712 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4713 int extraFlags) 4714 throws IntentSender.SendIntentException { 4715 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4716 flagsMask, flagsValues, extraFlags, null); 4717 } 4718 4719 /** 4720 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4721 * taking a IntentSender; see 4722 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4723 * for more information. 4724 */ 4725 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4726 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4727 int extraFlags, @Nullable Bundle options) 4728 throws IntentSender.SendIntentException { 4729 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4730 flagsMask, flagsValues, child, options); 4731 } 4732 4733 /** 4734 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4735 * or {@link #finish} to specify an explicit transition animation to 4736 * perform next. 4737 * 4738 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4739 * to using this with starting activities is to supply the desired animation 4740 * information through a {@link ActivityOptions} bundle to 4741 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4742 * you to specify a custom animation even when starting an activity from 4743 * outside the context of the current top activity. 4744 * 4745 * @param enterAnim A resource ID of the animation resource to use for 4746 * the incoming activity. Use 0 for no animation. 4747 * @param exitAnim A resource ID of the animation resource to use for 4748 * the outgoing activity. Use 0 for no animation. 4749 */ 4750 public void overridePendingTransition(int enterAnim, int exitAnim) { 4751 try { 4752 ActivityManagerNative.getDefault().overridePendingTransition( 4753 mToken, getPackageName(), enterAnim, exitAnim); 4754 } catch (RemoteException e) { 4755 } 4756 } 4757 4758 /** 4759 * Call this to set the result that your activity will return to its 4760 * caller. 4761 * 4762 * @param resultCode The result code to propagate back to the originating 4763 * activity, often RESULT_CANCELED or RESULT_OK 4764 * 4765 * @see #RESULT_CANCELED 4766 * @see #RESULT_OK 4767 * @see #RESULT_FIRST_USER 4768 * @see #setResult(int, Intent) 4769 */ 4770 public final void setResult(int resultCode) { 4771 synchronized (this) { 4772 mResultCode = resultCode; 4773 mResultData = null; 4774 } 4775 } 4776 4777 /** 4778 * Call this to set the result that your activity will return to its 4779 * caller. 4780 * 4781 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4782 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4783 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4784 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4785 * Activity receiving the result access to the specific URIs in the Intent. 4786 * Access will remain until the Activity has finished (it will remain across the hosting 4787 * process being killed and other temporary destruction) and will be added 4788 * to any existing set of URI permissions it already holds. 4789 * 4790 * @param resultCode The result code to propagate back to the originating 4791 * activity, often RESULT_CANCELED or RESULT_OK 4792 * @param data The data to propagate back to the originating activity. 4793 * 4794 * @see #RESULT_CANCELED 4795 * @see #RESULT_OK 4796 * @see #RESULT_FIRST_USER 4797 * @see #setResult(int) 4798 */ 4799 public final void setResult(int resultCode, Intent data) { 4800 synchronized (this) { 4801 mResultCode = resultCode; 4802 mResultData = data; 4803 } 4804 } 4805 4806 /** 4807 * Return information about who launched this activity. If the launching Intent 4808 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 4809 * that will be returned as-is; otherwise, if known, an 4810 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 4811 * package name that started the Intent will be returned. This may return null if no 4812 * referrer can be identified -- it is neither explicitly specified, nor is it known which 4813 * application package was involved. 4814 * 4815 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 4816 * return the referrer that submitted that new intent to the activity. Otherwise, it 4817 * always returns the referrer of the original Intent.</p> 4818 * 4819 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 4820 * referrer information, applications can spoof it.</p> 4821 */ 4822 @Nullable 4823 public Uri getReferrer() { 4824 Intent intent = getIntent(); 4825 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 4826 if (referrer != null) { 4827 return referrer; 4828 } 4829 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 4830 if (referrerName != null) { 4831 return Uri.parse(referrerName); 4832 } 4833 if (mReferrer != null) { 4834 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 4835 } 4836 return null; 4837 } 4838 4839 /** 4840 * Override to generate the desired referrer for the content currently being shown 4841 * by the app. The default implementation returns null, meaning the referrer will simply 4842 * be the android-app: of the package name of this activity. Return a non-null Uri to 4843 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 4844 */ 4845 public Uri onProvideReferrer() { 4846 return null; 4847 } 4848 4849 /** 4850 * Return the name of the package that invoked this activity. This is who 4851 * the data in {@link #setResult setResult()} will be sent to. You can 4852 * use this information to validate that the recipient is allowed to 4853 * receive the data. 4854 * 4855 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4856 * did not use the {@link #startActivityForResult} 4857 * form that includes a request code), then the calling package will be 4858 * null.</p> 4859 * 4860 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4861 * the result from this method was unstable. If the process hosting the calling 4862 * package was no longer running, it would return null instead of the proper package 4863 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4864 * from that instead.</p> 4865 * 4866 * @return The package of the activity that will receive your 4867 * reply, or null if none. 4868 */ 4869 @Nullable 4870 public String getCallingPackage() { 4871 try { 4872 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4873 } catch (RemoteException e) { 4874 return null; 4875 } 4876 } 4877 4878 /** 4879 * Return the name of the activity that invoked this activity. This is 4880 * who the data in {@link #setResult setResult()} will be sent to. You 4881 * can use this information to validate that the recipient is allowed to 4882 * receive the data. 4883 * 4884 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4885 * did not use the {@link #startActivityForResult} 4886 * form that includes a request code), then the calling package will be 4887 * null. 4888 * 4889 * @return The ComponentName of the activity that will receive your 4890 * reply, or null if none. 4891 */ 4892 @Nullable 4893 public ComponentName getCallingActivity() { 4894 try { 4895 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4896 } catch (RemoteException e) { 4897 return null; 4898 } 4899 } 4900 4901 /** 4902 * Control whether this activity's main window is visible. This is intended 4903 * only for the special case of an activity that is not going to show a 4904 * UI itself, but can't just finish prior to onResume() because it needs 4905 * to wait for a service binding or such. Setting this to false allows 4906 * you to prevent your UI from being shown during that time. 4907 * 4908 * <p>The default value for this is taken from the 4909 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4910 */ 4911 public void setVisible(boolean visible) { 4912 if (mVisibleFromClient != visible) { 4913 mVisibleFromClient = visible; 4914 if (mVisibleFromServer) { 4915 if (visible) makeVisible(); 4916 else mDecor.setVisibility(View.INVISIBLE); 4917 } 4918 } 4919 } 4920 4921 void makeVisible() { 4922 if (!mWindowAdded) { 4923 ViewManager wm = getWindowManager(); 4924 wm.addView(mDecor, getWindow().getAttributes()); 4925 mWindowAdded = true; 4926 } 4927 mDecor.setVisibility(View.VISIBLE); 4928 } 4929 4930 /** 4931 * Check to see whether this activity is in the process of finishing, 4932 * either because you called {@link #finish} on it or someone else 4933 * has requested that it finished. This is often used in 4934 * {@link #onPause} to determine whether the activity is simply pausing or 4935 * completely finishing. 4936 * 4937 * @return If the activity is finishing, returns true; else returns false. 4938 * 4939 * @see #finish 4940 */ 4941 public boolean isFinishing() { 4942 return mFinished; 4943 } 4944 4945 /** 4946 * Returns true if the final {@link #onDestroy()} call has been made 4947 * on the Activity, so this instance is now dead. 4948 */ 4949 public boolean isDestroyed() { 4950 return mDestroyed; 4951 } 4952 4953 /** 4954 * Check to see whether this activity is in the process of being destroyed in order to be 4955 * recreated with a new configuration. This is often used in 4956 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4957 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4958 * 4959 * @return If the activity is being torn down in order to be recreated with a new configuration, 4960 * returns true; else returns false. 4961 */ 4962 public boolean isChangingConfigurations() { 4963 return mChangingConfigurations; 4964 } 4965 4966 /** 4967 * Cause this Activity to be recreated with a new instance. This results 4968 * in essentially the same flow as when the Activity is created due to 4969 * a configuration change -- the current instance will go through its 4970 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4971 */ 4972 public void recreate() { 4973 if (mParent != null) { 4974 throw new IllegalStateException("Can only be called on top-level activity"); 4975 } 4976 if (Looper.myLooper() != mMainThread.getLooper()) { 4977 throw new IllegalStateException("Must be called from main thread"); 4978 } 4979 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, null, false, 4980 false /* preserveWindow */); 4981 } 4982 4983 /** 4984 * Finishes the current activity and specifies whether to remove the task associated with this 4985 * activity. 4986 */ 4987 private void finish(int finishTask) { 4988 if (mParent == null) { 4989 int resultCode; 4990 Intent resultData; 4991 synchronized (this) { 4992 resultCode = mResultCode; 4993 resultData = mResultData; 4994 } 4995 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4996 try { 4997 if (resultData != null) { 4998 resultData.prepareToLeaveProcess(); 4999 } 5000 if (ActivityManagerNative.getDefault() 5001 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5002 mFinished = true; 5003 } 5004 } catch (RemoteException e) { 5005 // Empty 5006 } 5007 } else { 5008 mParent.finishFromChild(this); 5009 } 5010 } 5011 5012 /** 5013 * Call this when your activity is done and should be closed. The 5014 * ActivityResult is propagated back to whoever launched you via 5015 * onActivityResult(). 5016 */ 5017 public void finish() { 5018 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5019 } 5020 5021 /** 5022 * Finish this activity as well as all activities immediately below it 5023 * in the current task that have the same affinity. This is typically 5024 * used when an application can be launched on to another task (such as 5025 * from an ACTION_VIEW of a content type it understands) and the user 5026 * has used the up navigation to switch out of the current task and in 5027 * to its own task. In this case, if the user has navigated down into 5028 * any other activities of the second application, all of those should 5029 * be removed from the original task as part of the task switch. 5030 * 5031 * <p>Note that this finish does <em>not</em> allow you to deliver results 5032 * to the previous activity, and an exception will be thrown if you are trying 5033 * to do so.</p> 5034 */ 5035 public void finishAffinity() { 5036 if (mParent != null) { 5037 throw new IllegalStateException("Can not be called from an embedded activity"); 5038 } 5039 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5040 throw new IllegalStateException("Can not be called to deliver a result"); 5041 } 5042 try { 5043 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 5044 mFinished = true; 5045 } 5046 } catch (RemoteException e) { 5047 // Empty 5048 } 5049 } 5050 5051 /** 5052 * This is called when a child activity of this one calls its 5053 * {@link #finish} method. The default implementation simply calls 5054 * finish() on this activity (the parent), finishing the entire group. 5055 * 5056 * @param child The activity making the call. 5057 * 5058 * @see #finish 5059 */ 5060 public void finishFromChild(Activity child) { 5061 finish(); 5062 } 5063 5064 /** 5065 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5066 * to reverse its exit Transition. When the exit Transition completes, 5067 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5068 * immediately and the Activity exit Transition is run. 5069 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5070 */ 5071 public void finishAfterTransition() { 5072 if (!mActivityTransitionState.startExitBackTransition(this)) { 5073 finish(); 5074 } 5075 } 5076 5077 /** 5078 * Force finish another activity that you had previously started with 5079 * {@link #startActivityForResult}. 5080 * 5081 * @param requestCode The request code of the activity that you had 5082 * given to startActivityForResult(). If there are multiple 5083 * activities started with this request code, they 5084 * will all be finished. 5085 */ 5086 public void finishActivity(int requestCode) { 5087 if (mParent == null) { 5088 try { 5089 ActivityManagerNative.getDefault() 5090 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5091 } catch (RemoteException e) { 5092 // Empty 5093 } 5094 } else { 5095 mParent.finishActivityFromChild(this, requestCode); 5096 } 5097 } 5098 5099 /** 5100 * This is called when a child activity of this one calls its 5101 * finishActivity(). 5102 * 5103 * @param child The activity making the call. 5104 * @param requestCode Request code that had been used to start the 5105 * activity. 5106 */ 5107 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5108 try { 5109 ActivityManagerNative.getDefault() 5110 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5111 } catch (RemoteException e) { 5112 // Empty 5113 } 5114 } 5115 5116 /** 5117 * Call this when your activity is done and should be closed and the task should be completely 5118 * removed as a part of finishing the root activity of the task. 5119 */ 5120 public void finishAndRemoveTask() { 5121 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5122 } 5123 5124 /** 5125 * Ask that the local app instance of this activity be released to free up its memory. 5126 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5127 * a new instance of the activity will later be re-created if needed due to the user 5128 * navigating back to it. 5129 * 5130 * @return Returns true if the activity was in a state that it has started the process 5131 * of destroying its current instance; returns false if for any reason this could not 5132 * be done: it is currently visible to the user, it is already being destroyed, it is 5133 * being finished, it hasn't yet saved its state, etc. 5134 */ 5135 public boolean releaseInstance() { 5136 try { 5137 return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); 5138 } catch (RemoteException e) { 5139 // Empty 5140 } 5141 return false; 5142 } 5143 5144 /** 5145 * Called when an activity you launched exits, giving you the requestCode 5146 * you started it with, the resultCode it returned, and any additional 5147 * data from it. The <var>resultCode</var> will be 5148 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5149 * didn't return any result, or crashed during its operation. 5150 * 5151 * <p>You will receive this call immediately before onResume() when your 5152 * activity is re-starting. 5153 * 5154 * <p>This method is never invoked if your activity sets 5155 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5156 * <code>true</code>. 5157 * 5158 * @param requestCode The integer request code originally supplied to 5159 * startActivityForResult(), allowing you to identify who this 5160 * result came from. 5161 * @param resultCode The integer result code returned by the child activity 5162 * through its setResult(). 5163 * @param data An Intent, which can return result data to the caller 5164 * (various data can be attached to Intent "extras"). 5165 * 5166 * @see #startActivityForResult 5167 * @see #createPendingResult 5168 * @see #setResult(int) 5169 */ 5170 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5171 } 5172 5173 /** 5174 * Called when an activity you launched with an activity transition exposes this 5175 * Activity through a returning activity transition, giving you the resultCode 5176 * and any additional data from it. This method will only be called if the activity 5177 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5178 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5179 * 5180 * <p>The purpose of this function is to let the called Activity send a hint about 5181 * its state so that this underlying Activity can prepare to be exposed. A call to 5182 * this method does not guarantee that the called Activity has or will be exiting soon. 5183 * It only indicates that it will expose this Activity's Window and it has 5184 * some data to pass to prepare it.</p> 5185 * 5186 * @param resultCode The integer result code returned by the child activity 5187 * through its setResult(). 5188 * @param data An Intent, which can return result data to the caller 5189 * (various data can be attached to Intent "extras"). 5190 */ 5191 public void onActivityReenter(int resultCode, Intent data) { 5192 } 5193 5194 /** 5195 * Create a new PendingIntent object which you can hand to others 5196 * for them to use to send result data back to your 5197 * {@link #onActivityResult} callback. The created object will be either 5198 * one-shot (becoming invalid after a result is sent back) or multiple 5199 * (allowing any number of results to be sent through it). 5200 * 5201 * @param requestCode Private request code for the sender that will be 5202 * associated with the result data when it is returned. The sender can not 5203 * modify this value, allowing you to identify incoming results. 5204 * @param data Default data to supply in the result, which may be modified 5205 * by the sender. 5206 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5207 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5208 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5209 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5210 * or any of the flags as supported by 5211 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5212 * of the intent that can be supplied when the actual send happens. 5213 * 5214 * @return Returns an existing or new PendingIntent matching the given 5215 * parameters. May return null only if 5216 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5217 * supplied. 5218 * 5219 * @see PendingIntent 5220 */ 5221 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5222 @PendingIntent.Flags int flags) { 5223 String packageName = getPackageName(); 5224 try { 5225 data.prepareToLeaveProcess(); 5226 IIntentSender target = 5227 ActivityManagerNative.getDefault().getIntentSender( 5228 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5229 mParent == null ? mToken : mParent.mToken, 5230 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5231 UserHandle.myUserId()); 5232 return target != null ? new PendingIntent(target) : null; 5233 } catch (RemoteException e) { 5234 // Empty 5235 } 5236 return null; 5237 } 5238 5239 /** 5240 * Change the desired orientation of this activity. If the activity 5241 * is currently in the foreground or otherwise impacting the screen 5242 * orientation, the screen will immediately be changed (possibly causing 5243 * the activity to be restarted). Otherwise, this will be used the next 5244 * time the activity is visible. 5245 * 5246 * @param requestedOrientation An orientation constant as used in 5247 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5248 */ 5249 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5250 if (mParent == null) { 5251 try { 5252 ActivityManagerNative.getDefault().setRequestedOrientation( 5253 mToken, requestedOrientation); 5254 } catch (RemoteException e) { 5255 // Empty 5256 } 5257 } else { 5258 mParent.setRequestedOrientation(requestedOrientation); 5259 } 5260 } 5261 5262 /** 5263 * Return the current requested orientation of the activity. This will 5264 * either be the orientation requested in its component's manifest, or 5265 * the last requested orientation given to 5266 * {@link #setRequestedOrientation(int)}. 5267 * 5268 * @return Returns an orientation constant as used in 5269 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5270 */ 5271 @ActivityInfo.ScreenOrientation 5272 public int getRequestedOrientation() { 5273 if (mParent == null) { 5274 try { 5275 return ActivityManagerNative.getDefault() 5276 .getRequestedOrientation(mToken); 5277 } catch (RemoteException e) { 5278 // Empty 5279 } 5280 } else { 5281 return mParent.getRequestedOrientation(); 5282 } 5283 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5284 } 5285 5286 /** 5287 * Return the identifier of the task this activity is in. This identifier 5288 * will remain the same for the lifetime of the activity. 5289 * 5290 * @return Task identifier, an opaque integer. 5291 */ 5292 public int getTaskId() { 5293 try { 5294 return ActivityManagerNative.getDefault() 5295 .getTaskForActivity(mToken, false); 5296 } catch (RemoteException e) { 5297 return -1; 5298 } 5299 } 5300 5301 /** 5302 * Return whether this activity is the root of a task. The root is the 5303 * first activity in a task. 5304 * 5305 * @return True if this is the root activity, else false. 5306 */ 5307 public boolean isTaskRoot() { 5308 try { 5309 return ActivityManagerNative.getDefault() 5310 .getTaskForActivity(mToken, true) >= 0; 5311 } catch (RemoteException e) { 5312 return false; 5313 } 5314 } 5315 5316 /** 5317 * Move the task containing this activity to the back of the activity 5318 * stack. The activity's order within the task is unchanged. 5319 * 5320 * @param nonRoot If false then this only works if the activity is the root 5321 * of a task; if true it will work for any activity in 5322 * a task. 5323 * 5324 * @return If the task was moved (or it was already at the 5325 * back) true is returned, else false. 5326 */ 5327 public boolean moveTaskToBack(boolean nonRoot) { 5328 try { 5329 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 5330 mToken, nonRoot); 5331 } catch (RemoteException e) { 5332 // Empty 5333 } 5334 return false; 5335 } 5336 5337 /** 5338 * Returns class name for this activity with the package prefix removed. 5339 * This is the default name used to read and write settings. 5340 * 5341 * @return The local class name. 5342 */ 5343 @NonNull 5344 public String getLocalClassName() { 5345 final String pkg = getPackageName(); 5346 final String cls = mComponent.getClassName(); 5347 int packageLen = pkg.length(); 5348 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5349 || cls.charAt(packageLen) != '.') { 5350 return cls; 5351 } 5352 return cls.substring(packageLen+1); 5353 } 5354 5355 /** 5356 * Returns complete component name of this activity. 5357 * 5358 * @return Returns the complete component name for this activity 5359 */ 5360 public ComponentName getComponentName() 5361 { 5362 return mComponent; 5363 } 5364 5365 /** 5366 * Retrieve a {@link SharedPreferences} object for accessing preferences 5367 * that are private to this activity. This simply calls the underlying 5368 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5369 * class name as the preferences name. 5370 * 5371 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5372 * operation, {@link #MODE_WORLD_READABLE} and 5373 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 5374 * 5375 * @return Returns the single SharedPreferences instance that can be used 5376 * to retrieve and modify the preference values. 5377 */ 5378 public SharedPreferences getPreferences(int mode) { 5379 return getSharedPreferences(getLocalClassName(), mode); 5380 } 5381 5382 private void ensureSearchManager() { 5383 if (mSearchManager != null) { 5384 return; 5385 } 5386 5387 mSearchManager = new SearchManager(this, null); 5388 } 5389 5390 @Override 5391 public Object getSystemService(@ServiceName @NonNull String name) { 5392 if (getBaseContext() == null) { 5393 throw new IllegalStateException( 5394 "System services not available to Activities before onCreate()"); 5395 } 5396 5397 if (WINDOW_SERVICE.equals(name)) { 5398 return mWindowManager; 5399 } else if (SEARCH_SERVICE.equals(name)) { 5400 ensureSearchManager(); 5401 return mSearchManager; 5402 } 5403 return super.getSystemService(name); 5404 } 5405 5406 /** 5407 * Change the title associated with this activity. If this is a 5408 * top-level activity, the title for its window will change. If it 5409 * is an embedded activity, the parent can do whatever it wants 5410 * with it. 5411 */ 5412 public void setTitle(CharSequence title) { 5413 mTitle = title; 5414 onTitleChanged(title, mTitleColor); 5415 5416 if (mParent != null) { 5417 mParent.onChildTitleChanged(this, title); 5418 } 5419 } 5420 5421 /** 5422 * Change the title associated with this activity. If this is a 5423 * top-level activity, the title for its window will change. If it 5424 * is an embedded activity, the parent can do whatever it wants 5425 * with it. 5426 */ 5427 public void setTitle(int titleId) { 5428 setTitle(getText(titleId)); 5429 } 5430 5431 /** 5432 * Change the color of the title associated with this activity. 5433 * <p> 5434 * This method is deprecated starting in API Level 11 and replaced by action 5435 * bar styles. For information on styling the Action Bar, read the <a 5436 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5437 * guide. 5438 * 5439 * @deprecated Use action bar styles instead. 5440 */ 5441 @Deprecated 5442 public void setTitleColor(int textColor) { 5443 mTitleColor = textColor; 5444 onTitleChanged(mTitle, textColor); 5445 } 5446 5447 public final CharSequence getTitle() { 5448 return mTitle; 5449 } 5450 5451 public final int getTitleColor() { 5452 return mTitleColor; 5453 } 5454 5455 protected void onTitleChanged(CharSequence title, int color) { 5456 if (mTitleReady) { 5457 final Window win = getWindow(); 5458 if (win != null) { 5459 win.setTitle(title); 5460 if (color != 0) { 5461 win.setTitleColor(color); 5462 } 5463 } 5464 if (mActionBar != null) { 5465 mActionBar.setWindowTitle(title); 5466 } 5467 } 5468 } 5469 5470 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5471 } 5472 5473 /** 5474 * Sets information describing the task with this activity for presentation inside the Recents 5475 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5476 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5477 * for each property until a suitable value is found. For each task the taskDescription will be 5478 * returned in {@link android.app.ActivityManager.TaskDescription}. 5479 * 5480 * @see ActivityManager#getRecentTasks 5481 * @see android.app.ActivityManager.TaskDescription 5482 * 5483 * @param taskDescription The TaskDescription properties that describe the task with this activity 5484 */ 5485 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5486 ActivityManager.TaskDescription td; 5487 // Scale the icon down to something reasonable if it is provided 5488 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 5489 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5490 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, true); 5491 td = new ActivityManager.TaskDescription(taskDescription.getLabel(), icon, 5492 taskDescription.getPrimaryColor()); 5493 } else { 5494 td = taskDescription; 5495 } 5496 try { 5497 ActivityManagerNative.getDefault().setTaskDescription(mToken, td); 5498 } catch (RemoteException e) { 5499 } 5500 } 5501 5502 /** 5503 * Sets the visibility of the progress bar in the title. 5504 * <p> 5505 * In order for the progress bar to be shown, the feature must be requested 5506 * via {@link #requestWindowFeature(int)}. 5507 * 5508 * @param visible Whether to show the progress bars in the title. 5509 * @deprecated No longer supported starting in API 21. 5510 */ 5511 @Deprecated 5512 public final void setProgressBarVisibility(boolean visible) { 5513 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5514 Window.PROGRESS_VISIBILITY_OFF); 5515 } 5516 5517 /** 5518 * Sets the visibility of the indeterminate progress bar in the title. 5519 * <p> 5520 * In order for the progress bar to be shown, the feature must be requested 5521 * via {@link #requestWindowFeature(int)}. 5522 * 5523 * @param visible Whether to show the progress bars in the title. 5524 * @deprecated No longer supported starting in API 21. 5525 */ 5526 @Deprecated 5527 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5528 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5529 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5530 } 5531 5532 /** 5533 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5534 * is always indeterminate). 5535 * <p> 5536 * In order for the progress bar to be shown, the feature must be requested 5537 * via {@link #requestWindowFeature(int)}. 5538 * 5539 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5540 * @deprecated No longer supported starting in API 21. 5541 */ 5542 @Deprecated 5543 public final void setProgressBarIndeterminate(boolean indeterminate) { 5544 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5545 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5546 : Window.PROGRESS_INDETERMINATE_OFF); 5547 } 5548 5549 /** 5550 * Sets the progress for the progress bars in the title. 5551 * <p> 5552 * In order for the progress bar to be shown, the feature must be requested 5553 * via {@link #requestWindowFeature(int)}. 5554 * 5555 * @param progress The progress for the progress bar. Valid ranges are from 5556 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5557 * bar will be completely filled and will fade out. 5558 * @deprecated No longer supported starting in API 21. 5559 */ 5560 @Deprecated 5561 public final void setProgress(int progress) { 5562 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5563 } 5564 5565 /** 5566 * Sets the secondary progress for the progress bar in the title. This 5567 * progress is drawn between the primary progress (set via 5568 * {@link #setProgress(int)} and the background. It can be ideal for media 5569 * scenarios such as showing the buffering progress while the default 5570 * progress shows the play progress. 5571 * <p> 5572 * In order for the progress bar to be shown, the feature must be requested 5573 * via {@link #requestWindowFeature(int)}. 5574 * 5575 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5576 * 0 to 10000 (both inclusive). 5577 * @deprecated No longer supported starting in API 21. 5578 */ 5579 @Deprecated 5580 public final void setSecondaryProgress(int secondaryProgress) { 5581 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5582 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5583 } 5584 5585 /** 5586 * Suggests an audio stream whose volume should be changed by the hardware 5587 * volume controls. 5588 * <p> 5589 * The suggested audio stream will be tied to the window of this Activity. 5590 * Volume requests which are received while the Activity is in the 5591 * foreground will affect this stream. 5592 * <p> 5593 * It is not guaranteed that the hardware volume controls will always change 5594 * this stream's volume (for example, if a call is in progress, its stream's 5595 * volume may be changed instead). To reset back to the default, use 5596 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5597 * 5598 * @param streamType The type of the audio stream whose volume should be 5599 * changed by the hardware volume controls. 5600 */ 5601 public final void setVolumeControlStream(int streamType) { 5602 getWindow().setVolumeControlStream(streamType); 5603 } 5604 5605 /** 5606 * Gets the suggested audio stream whose volume should be changed by the 5607 * hardware volume controls. 5608 * 5609 * @return The suggested audio stream type whose volume should be changed by 5610 * the hardware volume controls. 5611 * @see #setVolumeControlStream(int) 5612 */ 5613 public final int getVolumeControlStream() { 5614 return getWindow().getVolumeControlStream(); 5615 } 5616 5617 /** 5618 * Sets a {@link MediaController} to send media keys and volume changes to. 5619 * <p> 5620 * The controller will be tied to the window of this Activity. Media key and 5621 * volume events which are received while the Activity is in the foreground 5622 * will be forwarded to the controller and used to invoke transport controls 5623 * or adjust the volume. This may be used instead of or in addition to 5624 * {@link #setVolumeControlStream} to affect a specific session instead of a 5625 * specific stream. 5626 * <p> 5627 * It is not guaranteed that the hardware volume controls will always change 5628 * this session's volume (for example, if a call is in progress, its 5629 * stream's volume may be changed instead). To reset back to the default use 5630 * null as the controller. 5631 * 5632 * @param controller The controller for the session which should receive 5633 * media keys and volume changes. 5634 */ 5635 public final void setMediaController(MediaController controller) { 5636 getWindow().setMediaController(controller); 5637 } 5638 5639 /** 5640 * Gets the controller which should be receiving media key and volume events 5641 * while this activity is in the foreground. 5642 * 5643 * @return The controller which should receive events. 5644 * @see #setMediaController(android.media.session.MediaController) 5645 */ 5646 public final MediaController getMediaController() { 5647 return getWindow().getMediaController(); 5648 } 5649 5650 /** 5651 * Runs the specified action on the UI thread. If the current thread is the UI 5652 * thread, then the action is executed immediately. If the current thread is 5653 * not the UI thread, the action is posted to the event queue of the UI thread. 5654 * 5655 * @param action the action to run on the UI thread 5656 */ 5657 public final void runOnUiThread(Runnable action) { 5658 if (Thread.currentThread() != mUiThread) { 5659 mHandler.post(action); 5660 } else { 5661 action.run(); 5662 } 5663 } 5664 5665 /** 5666 * Standard implementation of 5667 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5668 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5669 * This implementation does nothing and is for 5670 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5671 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5672 * 5673 * @see android.view.LayoutInflater#createView 5674 * @see android.view.Window#getLayoutInflater 5675 */ 5676 @Nullable 5677 public View onCreateView(String name, Context context, AttributeSet attrs) { 5678 return null; 5679 } 5680 5681 /** 5682 * Standard implementation of 5683 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5684 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5685 * This implementation handles <fragment> tags to embed fragments inside 5686 * of the activity. 5687 * 5688 * @see android.view.LayoutInflater#createView 5689 * @see android.view.Window#getLayoutInflater 5690 */ 5691 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5692 if (!"fragment".equals(name)) { 5693 return onCreateView(name, context, attrs); 5694 } 5695 5696 return mFragments.onCreateView(parent, name, context, attrs); 5697 } 5698 5699 /** 5700 * Print the Activity's state into the given stream. This gets invoked if 5701 * you run "adb shell dumpsys activity <activity_component_name>". 5702 * 5703 * @param prefix Desired prefix to prepend at each line of output. 5704 * @param fd The raw file descriptor that the dump is being sent to. 5705 * @param writer The PrintWriter to which you should dump your state. This will be 5706 * closed for you after you return. 5707 * @param args additional arguments to the dump request. 5708 */ 5709 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5710 dumpInner(prefix, fd, writer, args); 5711 } 5712 5713 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5714 writer.print(prefix); writer.print("Local Activity "); 5715 writer.print(Integer.toHexString(System.identityHashCode(this))); 5716 writer.println(" State:"); 5717 String innerPrefix = prefix + " "; 5718 writer.print(innerPrefix); writer.print("mResumed="); 5719 writer.print(mResumed); writer.print(" mStopped="); 5720 writer.print(mStopped); writer.print(" mFinished="); 5721 writer.println(mFinished); 5722 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5723 writer.println(mChangingConfigurations); 5724 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5725 writer.println(mCurrentConfig); 5726 5727 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 5728 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 5729 if (mVoiceInteractor != null) { 5730 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 5731 } 5732 5733 if (getWindow() != null && 5734 getWindow().peekDecorView() != null && 5735 getWindow().peekDecorView().getViewRootImpl() != null) { 5736 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5737 } 5738 5739 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5740 } 5741 5742 /** 5743 * Bit indicating that this activity is "immersive" and should not be 5744 * interrupted by notifications if possible. 5745 * 5746 * This value is initially set by the manifest property 5747 * <code>android:immersive</code> but may be changed at runtime by 5748 * {@link #setImmersive}. 5749 * 5750 * @see #setImmersive(boolean) 5751 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5752 */ 5753 public boolean isImmersive() { 5754 try { 5755 return ActivityManagerNative.getDefault().isImmersive(mToken); 5756 } catch (RemoteException e) { 5757 return false; 5758 } 5759 } 5760 5761 /** 5762 * Indication of whether this is the highest level activity in this task. Can be used to 5763 * determine whether an activity launched by this activity was placed in the same task or 5764 * another task. 5765 * 5766 * @return true if this is the topmost, non-finishing activity in its task. 5767 */ 5768 private boolean isTopOfTask() { 5769 try { 5770 return ActivityManagerNative.getDefault().isTopOfTask(mToken); 5771 } catch (RemoteException e) { 5772 return false; 5773 } 5774 } 5775 5776 /** 5777 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5778 * fullscreen opaque Activity. 5779 * <p> 5780 * Call this whenever the background of a translucent Activity has changed to become opaque. 5781 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5782 * <p> 5783 * This call has no effect on non-translucent activities or on activities with the 5784 * {@link android.R.attr#windowIsFloating} attribute. 5785 * 5786 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5787 * ActivityOptions) 5788 * @see TranslucentConversionListener 5789 * 5790 * @hide 5791 */ 5792 @SystemApi 5793 public void convertFromTranslucent() { 5794 try { 5795 mTranslucentCallback = null; 5796 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5797 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5798 } 5799 } catch (RemoteException e) { 5800 // pass 5801 } 5802 } 5803 5804 /** 5805 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5806 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5807 * <p> 5808 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5809 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5810 * be called indicating that it is safe to make this activity translucent again. Until 5811 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5812 * behind the frontmost Activity will be indeterminate. 5813 * <p> 5814 * This call has no effect on non-translucent activities or on activities with the 5815 * {@link android.R.attr#windowIsFloating} attribute. 5816 * 5817 * @param callback the method to call when all visible Activities behind this one have been 5818 * drawn and it is safe to make this Activity translucent again. 5819 * @param options activity options delivered to the activity below this one. The options 5820 * are retrieved using {@link #getActivityOptions}. 5821 * @return <code>true</code> if Window was opaque and will become translucent or 5822 * <code>false</code> if window was translucent and no change needed to be made. 5823 * 5824 * @see #convertFromTranslucent() 5825 * @see TranslucentConversionListener 5826 * 5827 * @hide 5828 */ 5829 @SystemApi 5830 public boolean convertToTranslucent(TranslucentConversionListener callback, 5831 ActivityOptions options) { 5832 boolean drawComplete; 5833 try { 5834 mTranslucentCallback = callback; 5835 mChangeCanvasToTranslucent = 5836 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 5837 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5838 drawComplete = true; 5839 } catch (RemoteException e) { 5840 // Make callback return as though it timed out. 5841 mChangeCanvasToTranslucent = false; 5842 drawComplete = false; 5843 } 5844 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 5845 // Window is already translucent. 5846 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5847 } 5848 return mChangeCanvasToTranslucent; 5849 } 5850 5851 /** @hide */ 5852 void onTranslucentConversionComplete(boolean drawComplete) { 5853 if (mTranslucentCallback != null) { 5854 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5855 mTranslucentCallback = null; 5856 } 5857 if (mChangeCanvasToTranslucent) { 5858 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5859 } 5860 } 5861 5862 /** @hide */ 5863 public void onNewActivityOptions(ActivityOptions options) { 5864 mActivityTransitionState.setEnterActivityOptions(this, options); 5865 if (!mStopped) { 5866 mActivityTransitionState.enterReady(this); 5867 } 5868 } 5869 5870 /** 5871 * Retrieve the ActivityOptions passed in from the launching activity or passed back 5872 * from an activity launched by this activity in its call to {@link 5873 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 5874 * 5875 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 5876 * @hide 5877 */ 5878 ActivityOptions getActivityOptions() { 5879 try { 5880 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 5881 } catch (RemoteException e) { 5882 } 5883 return null; 5884 } 5885 5886 /** 5887 * Activities that want to remain visible behind a translucent activity above them must call 5888 * this method anytime between the start of {@link #onResume()} and the return from 5889 * {@link #onPause()}. If this call is successful then the activity will remain visible after 5890 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 5891 * 5892 * <p>The actions of this call are reset each time that this activity is brought to the 5893 * front. That is, every time {@link #onResume()} is called the activity will be assumed 5894 * to not have requested visible behind. Therefore, if you want this activity to continue to 5895 * be visible in the background you must call this method again. 5896 * 5897 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 5898 * for dialog and translucent activities. 5899 * 5900 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 5901 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 5902 * 5903 * <p>False will be returned any time this method is called between the return of onPause and 5904 * the next call to onResume. 5905 * 5906 * @param visible true to notify the system that the activity wishes to be visible behind other 5907 * translucent activities, false to indicate otherwise. Resources must be 5908 * released when passing false to this method. 5909 * @return the resulting visibiity state. If true the activity will remain visible beyond 5910 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 5911 * then the activity may not count on being visible behind other translucent activities, 5912 * and must stop any media playback and release resources. 5913 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 5914 * the return value must be checked. 5915 * 5916 * @see #onVisibleBehindCanceled() 5917 * @see #onBackgroundVisibleBehindChanged(boolean) 5918 */ 5919 public boolean requestVisibleBehind(boolean visible) { 5920 if (!mResumed) { 5921 // Do not permit paused or stopped activities to do this. 5922 visible = false; 5923 } 5924 try { 5925 mVisibleBehind = ActivityManagerNative.getDefault() 5926 .requestVisibleBehind(mToken, visible) && visible; 5927 } catch (RemoteException e) { 5928 mVisibleBehind = false; 5929 } 5930 return mVisibleBehind; 5931 } 5932 5933 /** 5934 * Called when a translucent activity over this activity is becoming opaque or another 5935 * activity is being launched. Activities that override this method must call 5936 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 5937 * 5938 * <p>When this method is called the activity has 500 msec to release any resources it may be 5939 * using while visible in the background. 5940 * If the activity has not returned from this method in 500 msec the system will destroy 5941 * the activity and kill the process in order to recover the resources for another 5942 * process. Otherwise {@link #onStop()} will be called following return. 5943 * 5944 * @see #requestVisibleBehind(boolean) 5945 * @see #onBackgroundVisibleBehindChanged(boolean) 5946 */ 5947 @CallSuper 5948 public void onVisibleBehindCanceled() { 5949 mCalled = true; 5950 } 5951 5952 /** 5953 * Translucent activities may call this to determine if there is an activity below them that 5954 * is currently set to be visible in the background. 5955 * 5956 * @return true if an activity below is set to visible according to the most recent call to 5957 * {@link #requestVisibleBehind(boolean)}, false otherwise. 5958 * 5959 * @see #requestVisibleBehind(boolean) 5960 * @see #onVisibleBehindCanceled() 5961 * @see #onBackgroundVisibleBehindChanged(boolean) 5962 * @hide 5963 */ 5964 @SystemApi 5965 public boolean isBackgroundVisibleBehind() { 5966 try { 5967 return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); 5968 } catch (RemoteException e) { 5969 } 5970 return false; 5971 } 5972 5973 /** 5974 * The topmost foreground activity will receive this call when the background visibility state 5975 * of the activity below it changes. 5976 * 5977 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 5978 * due to a background activity finishing itself. 5979 * 5980 * @param visible true if a background activity is visible, false otherwise. 5981 * 5982 * @see #requestVisibleBehind(boolean) 5983 * @see #onVisibleBehindCanceled() 5984 * @hide 5985 */ 5986 @SystemApi 5987 public void onBackgroundVisibleBehindChanged(boolean visible) { 5988 } 5989 5990 /** 5991 * Activities cannot draw during the period that their windows are animating in. In order 5992 * to know when it is safe to begin drawing they can override this method which will be 5993 * called when the entering animation has completed. 5994 */ 5995 public void onEnterAnimationComplete() { 5996 } 5997 5998 /** 5999 * @hide 6000 */ 6001 public void dispatchEnterAnimationComplete() { 6002 onEnterAnimationComplete(); 6003 if (getWindow() != null && getWindow().getDecorView() != null) { 6004 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6005 } 6006 } 6007 6008 /** 6009 * Adjust the current immersive mode setting. 6010 * 6011 * Note that changing this value will have no effect on the activity's 6012 * {@link android.content.pm.ActivityInfo} structure; that is, if 6013 * <code>android:immersive</code> is set to <code>true</code> 6014 * in the application's manifest entry for this activity, the {@link 6015 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6016 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6017 * FLAG_IMMERSIVE} bit set. 6018 * 6019 * @see #isImmersive() 6020 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6021 */ 6022 public void setImmersive(boolean i) { 6023 try { 6024 ActivityManagerNative.getDefault().setImmersive(mToken, i); 6025 } catch (RemoteException e) { 6026 // pass 6027 } 6028 } 6029 6030 /** 6031 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6032 * 6033 * @param callback Callback that will manage lifecycle events for this action mode 6034 * @return The ActionMode that was started, or null if it was canceled 6035 * 6036 * @see ActionMode 6037 */ 6038 @Nullable 6039 public ActionMode startActionMode(ActionMode.Callback callback) { 6040 return mWindow.getDecorView().startActionMode(callback); 6041 } 6042 6043 /** 6044 * Start an action mode of the given type. 6045 * 6046 * @param callback Callback that will manage lifecycle events for this action mode 6047 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6048 * @return The ActionMode that was started, or null if it was canceled 6049 * 6050 * @see ActionMode 6051 */ 6052 @Nullable 6053 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6054 return mWindow.getDecorView().startActionMode(callback, type); 6055 } 6056 6057 /** 6058 * Give the Activity a chance to control the UI for an action mode requested 6059 * by the system. 6060 * 6061 * <p>Note: If you are looking for a notification callback that an action mode 6062 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6063 * 6064 * @param callback The callback that should control the new action mode 6065 * @return The new action mode, or <code>null</code> if the activity does not want to 6066 * provide special handling for this action mode. (It will be handled by the system.) 6067 */ 6068 @Nullable 6069 @Override 6070 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6071 // Only Primary ActionModes are represented in the ActionBar. 6072 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6073 initWindowDecorActionBar(); 6074 if (mActionBar != null) { 6075 return mActionBar.startActionMode(callback); 6076 } 6077 } 6078 return null; 6079 } 6080 6081 /** 6082 * {@inheritDoc} 6083 */ 6084 @Nullable 6085 @Override 6086 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6087 try { 6088 mActionModeTypeStarting = type; 6089 return onWindowStartingActionMode(callback); 6090 } finally { 6091 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6092 } 6093 } 6094 6095 /** 6096 * Notifies the Activity that an action mode has been started. 6097 * Activity subclasses overriding this method should call the superclass implementation. 6098 * 6099 * @param mode The new action mode. 6100 */ 6101 @CallSuper 6102 @Override 6103 public void onActionModeStarted(ActionMode mode) { 6104 } 6105 6106 /** 6107 * Notifies the activity that an action mode has finished. 6108 * Activity subclasses overriding this method should call the superclass implementation. 6109 * 6110 * @param mode The action mode that just finished. 6111 */ 6112 @CallSuper 6113 @Override 6114 public void onActionModeFinished(ActionMode mode) { 6115 } 6116 6117 /** 6118 * Returns true if the app should recreate the task when navigating 'up' from this activity 6119 * by using targetIntent. 6120 * 6121 * <p>If this method returns false the app can trivially call 6122 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6123 * up navigation. If this method returns false, the app should synthesize a new task stack 6124 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6125 * 6126 * @param targetIntent An intent representing the target destination for up navigation 6127 * @return true if navigating up should recreate a new task stack, false if the same task 6128 * should be used for the destination 6129 */ 6130 public boolean shouldUpRecreateTask(Intent targetIntent) { 6131 try { 6132 PackageManager pm = getPackageManager(); 6133 ComponentName cn = targetIntent.getComponent(); 6134 if (cn == null) { 6135 cn = targetIntent.resolveActivity(pm); 6136 } 6137 ActivityInfo info = pm.getActivityInfo(cn, 0); 6138 if (info.taskAffinity == null) { 6139 return false; 6140 } 6141 return ActivityManagerNative.getDefault() 6142 .shouldUpRecreateTask(mToken, info.taskAffinity); 6143 } catch (RemoteException e) { 6144 return false; 6145 } catch (NameNotFoundException e) { 6146 return false; 6147 } 6148 } 6149 6150 /** 6151 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6152 * in the process. If the activity indicated by upIntent already exists in the task's history, 6153 * this activity and all others before the indicated activity in the history stack will be 6154 * finished. 6155 * 6156 * <p>If the indicated activity does not appear in the history stack, this will finish 6157 * each activity in this task until the root activity of the task is reached, resulting in 6158 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6159 * when an activity may be reached by a path not passing through a canonical parent 6160 * activity.</p> 6161 * 6162 * <p>This method should be used when performing up navigation from within the same task 6163 * as the destination. If up navigation should cross tasks in some cases, see 6164 * {@link #shouldUpRecreateTask(Intent)}.</p> 6165 * 6166 * @param upIntent An intent representing the target destination for up navigation 6167 * 6168 * @return true if up navigation successfully reached the activity indicated by upIntent and 6169 * upIntent was delivered to it. false if an instance of the indicated activity could 6170 * not be found and this activity was simply finished normally. 6171 */ 6172 public boolean navigateUpTo(Intent upIntent) { 6173 if (mParent == null) { 6174 ComponentName destInfo = upIntent.getComponent(); 6175 if (destInfo == null) { 6176 destInfo = upIntent.resolveActivity(getPackageManager()); 6177 if (destInfo == null) { 6178 return false; 6179 } 6180 upIntent = new Intent(upIntent); 6181 upIntent.setComponent(destInfo); 6182 } 6183 int resultCode; 6184 Intent resultData; 6185 synchronized (this) { 6186 resultCode = mResultCode; 6187 resultData = mResultData; 6188 } 6189 if (resultData != null) { 6190 resultData.prepareToLeaveProcess(); 6191 } 6192 try { 6193 upIntent.prepareToLeaveProcess(); 6194 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 6195 resultCode, resultData); 6196 } catch (RemoteException e) { 6197 return false; 6198 } 6199 } else { 6200 return mParent.navigateUpToFromChild(this, upIntent); 6201 } 6202 } 6203 6204 /** 6205 * This is called when a child activity of this one calls its 6206 * {@link #navigateUpTo} method. The default implementation simply calls 6207 * navigateUpTo(upIntent) on this activity (the parent). 6208 * 6209 * @param child The activity making the call. 6210 * @param upIntent An intent representing the target destination for up navigation 6211 * 6212 * @return true if up navigation successfully reached the activity indicated by upIntent and 6213 * upIntent was delivered to it. false if an instance of the indicated activity could 6214 * not be found and this activity was simply finished normally. 6215 */ 6216 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6217 return navigateUpTo(upIntent); 6218 } 6219 6220 /** 6221 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6222 * this activity's logical parent. The logical parent is named in the application's manifest 6223 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6224 * Activity subclasses may override this method to modify the Intent returned by 6225 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6226 * the parent intent entirely. 6227 * 6228 * @return a new Intent targeting the defined parent of this activity or null if 6229 * there is no valid parent. 6230 */ 6231 @Nullable 6232 public Intent getParentActivityIntent() { 6233 final String parentName = mActivityInfo.parentActivityName; 6234 if (TextUtils.isEmpty(parentName)) { 6235 return null; 6236 } 6237 6238 // If the parent itself has no parent, generate a main activity intent. 6239 final ComponentName target = new ComponentName(this, parentName); 6240 try { 6241 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6242 final String parentActivity = parentInfo.parentActivityName; 6243 final Intent parentIntent = parentActivity == null 6244 ? Intent.makeMainActivity(target) 6245 : new Intent().setComponent(target); 6246 return parentIntent; 6247 } catch (NameNotFoundException e) { 6248 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6249 "' in manifest"); 6250 return null; 6251 } 6252 } 6253 6254 /** 6255 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6256 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6257 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6258 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6259 * 6260 * @param callback Used to manipulate shared element transitions on the launched Activity. 6261 */ 6262 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6263 if (callback == null) { 6264 callback = SharedElementCallback.NULL_CALLBACK; 6265 } 6266 mEnterTransitionListener = callback; 6267 } 6268 6269 /** 6270 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6271 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6272 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6273 * calls will only come when returning from the started Activity. 6274 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6275 * 6276 * @param callback Used to manipulate shared element transitions on the launching Activity. 6277 */ 6278 public void setExitSharedElementCallback(SharedElementCallback callback) { 6279 if (callback == null) { 6280 callback = SharedElementCallback.NULL_CALLBACK; 6281 } 6282 mExitTransitionListener = callback; 6283 } 6284 6285 /** 6286 * Postpone the entering activity transition when Activity was started with 6287 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6288 * android.util.Pair[])}. 6289 * <p>This method gives the Activity the ability to delay starting the entering and 6290 * shared element transitions until all data is loaded. Until then, the Activity won't 6291 * draw into its window, leaving the window transparent. This may also cause the 6292 * returning animation to be delayed until data is ready. This method should be 6293 * called in {@link #onCreate(android.os.Bundle)} or in 6294 * {@link #onActivityReenter(int, android.content.Intent)}. 6295 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6296 * start the transitions. If the Activity did not use 6297 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6298 * android.util.Pair[])}, then this method does nothing.</p> 6299 */ 6300 public void postponeEnterTransition() { 6301 mActivityTransitionState.postponeEnterTransition(); 6302 } 6303 6304 /** 6305 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6306 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6307 * to have your Activity start drawing. 6308 */ 6309 public void startPostponedEnterTransition() { 6310 mActivityTransitionState.startPostponedEnterTransition(); 6311 } 6312 6313 // ------------------ Internal API ------------------ 6314 6315 final void setParent(Activity parent) { 6316 mParent = parent; 6317 } 6318 6319 final void attach(Context context, ActivityThread aThread, 6320 Instrumentation instr, IBinder token, int ident, 6321 Application application, Intent intent, ActivityInfo info, 6322 CharSequence title, Activity parent, String id, 6323 NonConfigurationInstances lastNonConfigurationInstances, 6324 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 6325 Window window) { 6326 attachBaseContext(context); 6327 6328 mFragments.attachHost(null /*parent*/); 6329 6330 mWindow = new PhoneWindow(this, window); 6331 mWindow.setWindowControllerCallback(this); 6332 mWindow.setCallback(this); 6333 mWindow.setOnWindowDismissedCallback(this); 6334 mWindow.getLayoutInflater().setPrivateFactory(this); 6335 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 6336 mWindow.setSoftInputMode(info.softInputMode); 6337 } 6338 if (info.uiOptions != 0) { 6339 mWindow.setUiOptions(info.uiOptions); 6340 } 6341 mUiThread = Thread.currentThread(); 6342 6343 mMainThread = aThread; 6344 mInstrumentation = instr; 6345 mToken = token; 6346 mIdent = ident; 6347 mApplication = application; 6348 mIntent = intent; 6349 mReferrer = referrer; 6350 mComponent = intent.getComponent(); 6351 mActivityInfo = info; 6352 mTitle = title; 6353 mParent = parent; 6354 mEmbeddedID = id; 6355 mLastNonConfigurationInstances = lastNonConfigurationInstances; 6356 if (voiceInteractor != null) { 6357 if (lastNonConfigurationInstances != null) { 6358 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 6359 } else { 6360 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 6361 Looper.myLooper()); 6362 } 6363 } 6364 6365 mWindow.setWindowManager( 6366 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 6367 mToken, mComponent.flattenToString(), 6368 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 6369 if (mParent != null) { 6370 mWindow.setContainer(mParent.getWindow()); 6371 } 6372 mWindowManager = mWindow.getWindowManager(); 6373 mCurrentConfig = config; 6374 } 6375 6376 /** @hide */ 6377 public final IBinder getActivityToken() { 6378 return mParent != null ? mParent.getActivityToken() : mToken; 6379 } 6380 6381 final void performCreateCommon() { 6382 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 6383 com.android.internal.R.styleable.Window_windowNoDisplay, false); 6384 mFragments.dispatchActivityCreated(); 6385 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6386 } 6387 6388 final void performCreate(Bundle icicle) { 6389 restoreHasCurrentPermissionRequest(icicle); 6390 onCreate(icicle); 6391 mActivityTransitionState.readState(icicle); 6392 performCreateCommon(); 6393 } 6394 6395 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 6396 restoreHasCurrentPermissionRequest(icicle); 6397 onCreate(icicle, persistentState); 6398 mActivityTransitionState.readState(icicle); 6399 performCreateCommon(); 6400 } 6401 6402 final void performStart() { 6403 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6404 mFragments.noteStateNotSaved(); 6405 mCalled = false; 6406 mFragments.execPendingActions(); 6407 mInstrumentation.callActivityOnStart(this); 6408 if (!mCalled) { 6409 throw new SuperNotCalledException( 6410 "Activity " + mComponent.toShortString() + 6411 " did not call through to super.onStart()"); 6412 } 6413 mFragments.dispatchStart(); 6414 mFragments.reportLoaderStart(); 6415 mActivityTransitionState.enterReady(this); 6416 } 6417 6418 final void performRestart() { 6419 mFragments.noteStateNotSaved(); 6420 6421 if (mToken != null && mParent == null) { 6422 // We might have view roots that were preserved during a relaunch, we need to start them 6423 // again. We don't need to check mStopped, the roots will check if they were actually 6424 // stopped. 6425 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 6426 } 6427 6428 if (mStopped) { 6429 mStopped = false; 6430 6431 synchronized (mManagedCursors) { 6432 final int N = mManagedCursors.size(); 6433 for (int i=0; i<N; i++) { 6434 ManagedCursor mc = mManagedCursors.get(i); 6435 if (mc.mReleased || mc.mUpdated) { 6436 if (!mc.mCursor.requery()) { 6437 if (getApplicationInfo().targetSdkVersion 6438 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 6439 throw new IllegalStateException( 6440 "trying to requery an already closed cursor " 6441 + mc.mCursor); 6442 } 6443 } 6444 mc.mReleased = false; 6445 mc.mUpdated = false; 6446 } 6447 } 6448 } 6449 6450 mCalled = false; 6451 mInstrumentation.callActivityOnRestart(this); 6452 if (!mCalled) { 6453 throw new SuperNotCalledException( 6454 "Activity " + mComponent.toShortString() + 6455 " did not call through to super.onRestart()"); 6456 } 6457 performStart(); 6458 } 6459 } 6460 6461 final void performResume() { 6462 performRestart(); 6463 6464 mFragments.execPendingActions(); 6465 6466 mLastNonConfigurationInstances = null; 6467 6468 mCalled = false; 6469 // mResumed is set by the instrumentation 6470 mInstrumentation.callActivityOnResume(this); 6471 if (!mCalled) { 6472 throw new SuperNotCalledException( 6473 "Activity " + mComponent.toShortString() + 6474 " did not call through to super.onResume()"); 6475 } 6476 6477 // invisible activities must be finished before onResume() completes 6478 if (!mVisibleFromClient && !mFinished) { 6479 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 6480 if (getApplicationInfo().targetSdkVersion 6481 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 6482 throw new IllegalStateException( 6483 "Activity " + mComponent.toShortString() + 6484 " did not call finish() prior to onResume() completing"); 6485 } 6486 } 6487 6488 // Now really resume, and install the current status bar and menu. 6489 mCalled = false; 6490 6491 mFragments.dispatchResume(); 6492 mFragments.execPendingActions(); 6493 6494 onPostResume(); 6495 if (!mCalled) { 6496 throw new SuperNotCalledException( 6497 "Activity " + mComponent.toShortString() + 6498 " did not call through to super.onPostResume()"); 6499 } 6500 } 6501 6502 final void performPause() { 6503 mDoReportFullyDrawn = false; 6504 mFragments.dispatchPause(); 6505 mCalled = false; 6506 onPause(); 6507 mResumed = false; 6508 if (!mCalled && getApplicationInfo().targetSdkVersion 6509 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 6510 throw new SuperNotCalledException( 6511 "Activity " + mComponent.toShortString() + 6512 " did not call through to super.onPause()"); 6513 } 6514 mResumed = false; 6515 } 6516 6517 final void performUserLeaving() { 6518 onUserInteraction(); 6519 onUserLeaveHint(); 6520 } 6521 6522 final void performStop() { 6523 mDoReportFullyDrawn = false; 6524 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 6525 6526 if (!mStopped) { 6527 if (mWindow != null) { 6528 mWindow.closeAllPanels(); 6529 } 6530 6531 if (mToken != null && mParent == null) { 6532 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 6533 } 6534 6535 mFragments.dispatchStop(); 6536 6537 mCalled = false; 6538 mInstrumentation.callActivityOnStop(this); 6539 if (!mCalled) { 6540 throw new SuperNotCalledException( 6541 "Activity " + mComponent.toShortString() + 6542 " did not call through to super.onStop()"); 6543 } 6544 6545 synchronized (mManagedCursors) { 6546 final int N = mManagedCursors.size(); 6547 for (int i=0; i<N; i++) { 6548 ManagedCursor mc = mManagedCursors.get(i); 6549 if (!mc.mReleased) { 6550 mc.mCursor.deactivate(); 6551 mc.mReleased = true; 6552 } 6553 } 6554 } 6555 6556 mStopped = true; 6557 } 6558 mResumed = false; 6559 } 6560 6561 final void performDestroy() { 6562 mDestroyed = true; 6563 mWindow.destroy(); 6564 mFragments.dispatchDestroy(); 6565 onDestroy(); 6566 mFragments.doLoaderDestroy(); 6567 if (mVoiceInteractor != null) { 6568 mVoiceInteractor.detachActivity(); 6569 } 6570 } 6571 6572 /** 6573 * @hide 6574 */ 6575 public final boolean isResumed() { 6576 return mResumed; 6577 } 6578 6579 private void storeHasCurrentPermissionRequest(Bundle bundle) { 6580 if (bundle != null && mHasCurrentPermissionsRequest) { 6581 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 6582 } 6583 } 6584 6585 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 6586 if (bundle != null) { 6587 mHasCurrentPermissionsRequest = bundle.getBoolean( 6588 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 6589 } 6590 } 6591 6592 void dispatchActivityResult(String who, int requestCode, 6593 int resultCode, Intent data) { 6594 if (false) Log.v( 6595 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 6596 + ", resCode=" + resultCode + ", data=" + data); 6597 mFragments.noteStateNotSaved(); 6598 if (who == null) { 6599 onActivityResult(requestCode, resultCode, data); 6600 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 6601 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 6602 if (TextUtils.isEmpty(who)) { 6603 dispatchRequestPermissionsResult(requestCode, data); 6604 } else { 6605 Fragment frag = mFragments.findFragmentByWho(who); 6606 if (frag != null) { 6607 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 6608 } 6609 } 6610 } else if (who.startsWith("@android:view:")) { 6611 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 6612 getActivityToken()); 6613 for (ViewRootImpl viewRoot : views) { 6614 if (viewRoot.getView() != null 6615 && viewRoot.getView().dispatchActivityResult( 6616 who, requestCode, resultCode, data)) { 6617 return; 6618 } 6619 } 6620 } else { 6621 Fragment frag = mFragments.findFragmentByWho(who); 6622 if (frag != null) { 6623 frag.onActivityResult(requestCode, resultCode, data); 6624 } 6625 } 6626 } 6627 6628 /** 6629 * Request to put this Activity in a mode where the user is locked to the 6630 * current task. 6631 * 6632 * This will prevent the user from launching other apps, going to settings, or reaching the 6633 * home screen. This does not include those apps whose {@link android.R.attr#lockTaskMode} 6634 * values permit launching while locked. 6635 * 6636 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true or 6637 * lockTaskMode=lockTaskModeAlways for this component then the app will go directly into 6638 * Lock Task mode. The user will not be able to exit this mode until 6639 * {@link Activity#stopLockTask()} is called. 6640 * 6641 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 6642 * then the system will prompt the user with a dialog requesting permission to enter 6643 * this mode. When entered through this method the user can exit at any time through 6644 * an action described by the request dialog. Calling stopLockTask will also exit the 6645 * mode. 6646 * 6647 * @see android.R.attr#lockTaskMode 6648 */ 6649 public void startLockTask() { 6650 try { 6651 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 6652 } catch (RemoteException e) { 6653 } 6654 } 6655 6656 /** 6657 * Allow the user to switch away from the current task. 6658 * 6659 * Called to end the mode started by {@link Activity#startLockTask}. This 6660 * can only be called by activities that have successfully called 6661 * startLockTask previously. 6662 * 6663 * This will allow the user to exit this app and move onto other activities. 6664 * <p>Note: This method should only be called when the activity is user-facing. That is, 6665 * between onResume() and onPause(). 6666 * <p>Note: If there are other tasks below this one that are also locked then calling this 6667 * method will immediately finish this task and resume the previous locked one, remaining in 6668 * lockTask mode. 6669 * 6670 * @see android.R.attr#lockTaskMode 6671 * @see ActivityManager#getLockTaskModeState() 6672 */ 6673 public void stopLockTask() { 6674 try { 6675 ActivityManagerNative.getDefault().stopLockTaskMode(); 6676 } catch (RemoteException e) { 6677 } 6678 } 6679 6680 /** 6681 * Shows the user the system defined message for telling the user how to exit 6682 * lock task mode. The task containing this activity must be in lock task mode at the time 6683 * of this call for the message to be displayed. 6684 */ 6685 public void showLockTaskEscapeMessage() { 6686 try { 6687 ActivityManagerNative.getDefault().showLockTaskEscapeMessage(mToken); 6688 } catch (RemoteException e) { 6689 } 6690 } 6691 6692 /** 6693 * Set whether the caption should displayed directly on the content rather than push it down. 6694 * 6695 * This affects only freeform windows since they display the caption and only the main 6696 * window of the activity. The caption is used to drag the window around and also shows 6697 * maximize and close action buttons. 6698 */ 6699 public void overlayWithDecorCaption(boolean overlay) { 6700 mWindow.setOverlayDecorCaption(overlay); 6701 } 6702 6703 /** 6704 * Interface for informing a translucent {@link Activity} once all visible activities below it 6705 * have completed drawing. This is necessary only after an {@link Activity} has been made 6706 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 6707 * translucent again following a call to {@link 6708 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6709 * ActivityOptions)} 6710 * 6711 * @hide 6712 */ 6713 @SystemApi 6714 public interface TranslucentConversionListener { 6715 /** 6716 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 6717 * below the top one have been redrawn. Following this callback it is safe to make the top 6718 * Activity translucent because the underlying Activity has been drawn. 6719 * 6720 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 6721 * occurred waiting for the Activity to complete drawing. 6722 * 6723 * @see Activity#convertFromTranslucent() 6724 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 6725 */ 6726 public void onTranslucentConversionComplete(boolean drawComplete); 6727 } 6728 6729 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 6730 mHasCurrentPermissionsRequest = false; 6731 // If the package installer crashed we may have not data - best effort. 6732 String[] permissions = (data != null) ? data.getStringArrayExtra( 6733 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6734 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6735 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6736 onRequestPermissionsResult(requestCode, permissions, grantResults); 6737 } 6738 6739 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 6740 Fragment fragment) { 6741 // If the package installer crashed we may have not data - best effort. 6742 String[] permissions = (data != null) ? data.getStringArrayExtra( 6743 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6744 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6745 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6746 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 6747 } 6748 6749 class HostCallbacks extends FragmentHostCallback<Activity> { 6750 public HostCallbacks() { 6751 super(Activity.this /*activity*/); 6752 } 6753 6754 @Override 6755 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6756 Activity.this.dump(prefix, fd, writer, args); 6757 } 6758 6759 @Override 6760 public boolean onShouldSaveFragmentState(Fragment fragment) { 6761 return !isFinishing(); 6762 } 6763 6764 @Override 6765 public LayoutInflater onGetLayoutInflater() { 6766 final LayoutInflater result = Activity.this.getLayoutInflater(); 6767 if (onUseFragmentManagerInflaterFactory()) { 6768 return result.cloneInContext(Activity.this); 6769 } 6770 return result; 6771 } 6772 6773 @Override 6774 public boolean onUseFragmentManagerInflaterFactory() { 6775 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 6776 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 6777 } 6778 6779 @Override 6780 public Activity onGetHost() { 6781 return Activity.this; 6782 } 6783 6784 @Override 6785 public void onInvalidateOptionsMenu() { 6786 Activity.this.invalidateOptionsMenu(); 6787 } 6788 6789 @Override 6790 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 6791 Bundle options) { 6792 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 6793 } 6794 6795 @Override 6796 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 6797 int requestCode) { 6798 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 6799 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 6800 startActivityForResult(who, intent, requestCode, null); 6801 } 6802 6803 @Override 6804 public boolean onHasWindowAnimations() { 6805 return getWindow() != null; 6806 } 6807 6808 @Override 6809 public int onGetWindowAnimations() { 6810 final Window w = getWindow(); 6811 return (w == null) ? 0 : w.getAttributes().windowAnimations; 6812 } 6813 6814 @Override 6815 public void onAttachFragment(Fragment fragment) { 6816 Activity.this.onAttachFragment(fragment); 6817 } 6818 6819 @Nullable 6820 @Override 6821 public View onFindViewById(int id) { 6822 return Activity.this.findViewById(id); 6823 } 6824 6825 @Override 6826 public boolean onHasView() { 6827 final Window w = getWindow(); 6828 return (w != null && w.peekDecorView() != null); 6829 } 6830 } 6831} 6832