Activity.java revision 0af6fa7015cd9da08bf52c1efb13641d30fd6bd7
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.DragEvent; 35import android.view.DropPermissions; 36import android.view.Window.WindowControllerCallback; 37import android.widget.Toolbar; 38 39import com.android.internal.app.IVoiceInteractor; 40import com.android.internal.app.WindowDecorActionBar; 41import com.android.internal.app.ToolbarActionBar; 42 43import android.annotation.SystemApi; 44import android.app.admin.DevicePolicyManager; 45import android.app.assist.AssistContent; 46import android.content.ComponentCallbacks2; 47import android.content.ComponentName; 48import android.content.ContentResolver; 49import android.content.Context; 50import android.content.CursorLoader; 51import android.content.IIntentSender; 52import android.content.Intent; 53import android.content.IntentSender; 54import android.content.SharedPreferences; 55import android.content.pm.ActivityInfo; 56import android.content.pm.PackageManager; 57import android.content.pm.PackageManager.NameNotFoundException; 58import android.content.res.Configuration; 59import android.content.res.Resources; 60import android.content.res.TypedArray; 61import android.database.Cursor; 62import android.graphics.Bitmap; 63import android.graphics.Canvas; 64import android.graphics.drawable.Drawable; 65import android.graphics.drawable.Icon; 66import android.media.AudioManager; 67import android.media.session.MediaController; 68import android.net.Uri; 69import android.os.Build; 70import android.os.Bundle; 71import android.os.Handler; 72import android.os.IBinder; 73import android.os.Looper; 74import android.os.Parcelable; 75import android.os.PersistableBundle; 76import android.os.RemoteException; 77import android.os.StrictMode; 78import android.os.UserHandle; 79import android.text.Selection; 80import android.text.SpannableStringBuilder; 81import android.text.TextUtils; 82import android.text.method.TextKeyListener; 83import android.transition.Scene; 84import android.transition.TransitionManager; 85import android.util.ArrayMap; 86import android.util.AttributeSet; 87import android.util.EventLog; 88import android.util.Log; 89import android.util.PrintWriterPrinter; 90import android.util.Slog; 91import android.util.SparseArray; 92import android.util.SuperNotCalledException; 93import android.view.ActionMode; 94import android.view.ContextMenu; 95import android.view.ContextMenu.ContextMenuInfo; 96import android.view.ContextThemeWrapper; 97import android.view.KeyEvent; 98import android.view.KeyboardShortcutGroup; 99import android.view.KeyboardShortcutInfo; 100import android.view.LayoutInflater; 101import android.view.Menu; 102import android.view.MenuInflater; 103import android.view.MenuItem; 104import android.view.MotionEvent; 105import android.view.SearchEvent; 106import android.view.View; 107import android.view.View.OnCreateContextMenuListener; 108import android.view.ViewGroup; 109import android.view.ViewGroup.LayoutParams; 110import android.view.ViewManager; 111import android.view.ViewRootImpl; 112import android.view.Window; 113import android.view.Window.WindowControllerCallback; 114import android.view.WindowManager; 115import android.view.WindowManagerGlobal; 116import android.view.accessibility.AccessibilityEvent; 117import android.widget.AdapterView; 118import android.widget.Toolbar; 119 120import com.android.internal.app.IVoiceInteractor; 121import com.android.internal.app.ToolbarActionBar; 122import com.android.internal.app.WindowDecorActionBar; 123import com.android.internal.policy.PhoneWindow; 124 125import java.io.FileDescriptor; 126import java.io.PrintWriter; 127import java.lang.annotation.Retention; 128import java.lang.annotation.RetentionPolicy; 129import java.util.ArrayList; 130import java.util.HashMap; 131import java.util.List; 132 133import static java.lang.Character.MIN_VALUE; 134 135/** 136 * An activity is a single, focused thing that the user can do. Almost all 137 * activities interact with the user, so the Activity class takes care of 138 * creating a window for you in which you can place your UI with 139 * {@link #setContentView}. While activities are often presented to the user 140 * as full-screen windows, they can also be used in other ways: as floating 141 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 142 * or embedded inside of another activity (using {@link ActivityGroup}). 143 * 144 * There are two methods almost all subclasses of Activity will implement: 145 * 146 * <ul> 147 * <li> {@link #onCreate} is where you initialize your activity. Most 148 * importantly, here you will usually call {@link #setContentView(int)} 149 * with a layout resource defining your UI, and using {@link #findViewById} 150 * to retrieve the widgets in that UI that you need to interact with 151 * programmatically. 152 * 153 * <li> {@link #onPause} is where you deal with the user leaving your 154 * activity. Most importantly, any changes made by the user should at this 155 * point be committed (usually to the 156 * {@link android.content.ContentProvider} holding the data). 157 * </ul> 158 * 159 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 160 * activity classes must have a corresponding 161 * {@link android.R.styleable#AndroidManifestActivity <activity>} 162 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 163 * 164 * <p>Topics covered here: 165 * <ol> 166 * <li><a href="#Fragments">Fragments</a> 167 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 168 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 169 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 170 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 171 * <li><a href="#Permissions">Permissions</a> 172 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 173 * </ol> 174 * 175 * <div class="special reference"> 176 * <h3>Developer Guides</h3> 177 * <p>The Activity class is an important part of an application's overall lifecycle, 178 * and the way activities are launched and put together is a fundamental 179 * part of the platform's application model. For a detailed perspective on the structure of an 180 * Android application and how activities behave, please read the 181 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 182 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 183 * developer guides.</p> 184 * 185 * <p>You can also find a detailed discussion about how to create activities in the 186 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 187 * developer guide.</p> 188 * </div> 189 * 190 * <a name="Fragments"></a> 191 * <h3>Fragments</h3> 192 * 193 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 194 * implementations can make use of the {@link Fragment} class to better 195 * modularize their code, build more sophisticated user interfaces for larger 196 * screens, and help scale their application between small and large screens. 197 * 198 * <a name="ActivityLifecycle"></a> 199 * <h3>Activity Lifecycle</h3> 200 * 201 * <p>Activities in the system are managed as an <em>activity stack</em>. 202 * When a new activity is started, it is placed on the top of the stack 203 * and becomes the running activity -- the previous activity always remains 204 * below it in the stack, and will not come to the foreground again until 205 * the new activity exits.</p> 206 * 207 * <p>An activity has essentially four states:</p> 208 * <ul> 209 * <li> If an activity in the foreground of the screen (at the top of 210 * the stack), 211 * it is <em>active</em> or <em>running</em>. </li> 212 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 213 * or transparent activity has focus on top of your activity), it 214 * is <em>paused</em>. A paused activity is completely alive (it 215 * maintains all state and member information and remains attached to 216 * the window manager), but can be killed by the system in extreme 217 * low memory situations. 218 * <li>If an activity is completely obscured by another activity, 219 * it is <em>stopped</em>. It still retains all state and member information, 220 * however, it is no longer visible to the user so its window is hidden 221 * and it will often be killed by the system when memory is needed 222 * elsewhere.</li> 223 * <li>If an activity is paused or stopped, the system can drop the activity 224 * from memory by either asking it to finish, or simply killing its 225 * process. When it is displayed again to the user, it must be 226 * completely restarted and restored to its previous state.</li> 227 * </ul> 228 * 229 * <p>The following diagram shows the important state paths of an Activity. 230 * The square rectangles represent callback methods you can implement to 231 * perform operations when the Activity moves between states. The colored 232 * ovals are major states the Activity can be in.</p> 233 * 234 * <p><img src="../../../images/activity_lifecycle.png" 235 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 236 * 237 * <p>There are three key loops you may be interested in monitoring within your 238 * activity: 239 * 240 * <ul> 241 * <li>The <b>entire lifetime</b> of an activity happens between the first call 242 * to {@link android.app.Activity#onCreate} through to a single final call 243 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 244 * of "global" state in onCreate(), and release all remaining resources in 245 * onDestroy(). For example, if it has a thread running in the background 246 * to download data from the network, it may create that thread in onCreate() 247 * and then stop the thread in onDestroy(). 248 * 249 * <li>The <b>visible lifetime</b> of an activity happens between a call to 250 * {@link android.app.Activity#onStart} until a corresponding call to 251 * {@link android.app.Activity#onStop}. During this time the user can see the 252 * activity on-screen, though it may not be in the foreground and interacting 253 * with the user. Between these two methods you can maintain resources that 254 * are needed to show the activity to the user. For example, you can register 255 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 256 * that impact your UI, and unregister it in onStop() when the user no 257 * longer sees what you are displaying. The onStart() and onStop() methods 258 * can be called multiple times, as the activity becomes visible and hidden 259 * to the user. 260 * 261 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 262 * {@link android.app.Activity#onResume} until a corresponding call to 263 * {@link android.app.Activity#onPause}. During this time the activity is 264 * in front of all other activities and interacting with the user. An activity 265 * can frequently go between the resumed and paused states -- for example when 266 * the device goes to sleep, when an activity result is delivered, when a new 267 * intent is delivered -- so the code in these methods should be fairly 268 * lightweight. 269 * </ul> 270 * 271 * <p>The entire lifecycle of an activity is defined by the following 272 * Activity methods. All of these are hooks that you can override 273 * to do appropriate work when the activity changes state. All 274 * activities will implement {@link android.app.Activity#onCreate} 275 * to do their initial setup; many will also implement 276 * {@link android.app.Activity#onPause} to commit changes to data and 277 * otherwise prepare to stop interacting with the user. You should always 278 * call up to your superclass when implementing these methods.</p> 279 * 280 * </p> 281 * <pre class="prettyprint"> 282 * public class Activity extends ApplicationContext { 283 * protected void onCreate(Bundle savedInstanceState); 284 * 285 * protected void onStart(); 286 * 287 * protected void onRestart(); 288 * 289 * protected void onResume(); 290 * 291 * protected void onPause(); 292 * 293 * protected void onStop(); 294 * 295 * protected void onDestroy(); 296 * } 297 * </pre> 298 * 299 * <p>In general the movement through an activity's lifecycle looks like 300 * this:</p> 301 * 302 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 303 * <colgroup align="left" span="3" /> 304 * <colgroup align="left" /> 305 * <colgroup align="center" /> 306 * <colgroup align="center" /> 307 * 308 * <thead> 309 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 310 * </thead> 311 * 312 * <tbody> 313 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 314 * <td>Called when the activity is first created. 315 * This is where you should do all of your normal static set up: 316 * create views, bind data to lists, etc. This method also 317 * provides you with a Bundle containing the activity's previously 318 * frozen state, if there was one. 319 * <p>Always followed by <code>onStart()</code>.</td> 320 * <td align="center">No</td> 321 * <td align="center"><code>onStart()</code></td> 322 * </tr> 323 * 324 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 325 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 326 * <td>Called after your activity has been stopped, prior to it being 327 * started again. 328 * <p>Always followed by <code>onStart()</code></td> 329 * <td align="center">No</td> 330 * <td align="center"><code>onStart()</code></td> 331 * </tr> 332 * 333 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 334 * <td>Called when the activity is becoming visible to the user. 335 * <p>Followed by <code>onResume()</code> if the activity comes 336 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 337 * <td align="center">No</td> 338 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 339 * </tr> 340 * 341 * <tr><td rowspan="2" style="border-left: none;"> </td> 342 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 343 * <td>Called when the activity will start 344 * interacting with the user. At this point your activity is at 345 * the top of the activity stack, with user input going to it. 346 * <p>Always followed by <code>onPause()</code>.</td> 347 * <td align="center">No</td> 348 * <td align="center"><code>onPause()</code></td> 349 * </tr> 350 * 351 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 352 * <td>Called when the system is about to start resuming a previous 353 * activity. This is typically used to commit unsaved changes to 354 * persistent data, stop animations and other things that may be consuming 355 * CPU, etc. Implementations of this method must be very quick because 356 * the next activity will not be resumed until this method returns. 357 * <p>Followed by either <code>onResume()</code> if the activity 358 * returns back to the front, or <code>onStop()</code> if it becomes 359 * invisible to the user.</td> 360 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 361 * <td align="center"><code>onResume()</code> or<br> 362 * <code>onStop()</code></td> 363 * </tr> 364 * 365 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 366 * <td>Called when the activity is no longer visible to the user, because 367 * another activity has been resumed and is covering this one. This 368 * may happen either because a new activity is being started, an existing 369 * one is being brought in front of this one, or this one is being 370 * destroyed. 371 * <p>Followed by either <code>onRestart()</code> if 372 * this activity is coming back to interact with the user, or 373 * <code>onDestroy()</code> if this activity is going away.</td> 374 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 375 * <td align="center"><code>onRestart()</code> or<br> 376 * <code>onDestroy()</code></td> 377 * </tr> 378 * 379 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 380 * <td>The final call you receive before your 381 * activity is destroyed. This can happen either because the 382 * activity is finishing (someone called {@link Activity#finish} on 383 * it, or because the system is temporarily destroying this 384 * instance of the activity to save space. You can distinguish 385 * between these two scenarios with the {@link 386 * Activity#isFinishing} method.</td> 387 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 388 * <td align="center"><em>nothing</em></td> 389 * </tr> 390 * </tbody> 391 * </table> 392 * 393 * <p>Note the "Killable" column in the above table -- for those methods that 394 * are marked as being killable, after that method returns the process hosting the 395 * activity may be killed by the system <em>at any time</em> without another line 396 * of its code being executed. Because of this, you should use the 397 * {@link #onPause} method to write any persistent data (such as user edits) 398 * to storage. In addition, the method 399 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 400 * in such a background state, allowing you to save away any dynamic instance 401 * state in your activity into the given Bundle, to be later received in 402 * {@link #onCreate} if the activity needs to be re-created. 403 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 404 * section for more information on how the lifecycle of a process is tied 405 * to the activities it is hosting. Note that it is important to save 406 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 407 * because the latter is not part of the lifecycle callbacks, so will not 408 * be called in every situation as described in its documentation.</p> 409 * 410 * <p class="note">Be aware that these semantics will change slightly between 411 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 412 * vs. those targeting prior platforms. Starting with Honeycomb, an application 413 * is not in the killable state until its {@link #onStop} has returned. This 414 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 415 * safely called after {@link #onPause()} and allows and application to safely 416 * wait until {@link #onStop()} to save persistent state.</p> 417 * 418 * <p>For those methods that are not marked as being killable, the activity's 419 * process will not be killed by the system starting from the time the method 420 * is called and continuing after it returns. Thus an activity is in the killable 421 * state, for example, between after <code>onPause()</code> to the start of 422 * <code>onResume()</code>.</p> 423 * 424 * <a name="ConfigurationChanges"></a> 425 * <h3>Configuration Changes</h3> 426 * 427 * <p>If the configuration of the device (as defined by the 428 * {@link Configuration Resources.Configuration} class) changes, 429 * then anything displaying a user interface will need to update to match that 430 * configuration. Because Activity is the primary mechanism for interacting 431 * with the user, it includes special support for handling configuration 432 * changes.</p> 433 * 434 * <p>Unless you specify otherwise, a configuration change (such as a change 435 * in screen orientation, language, input devices, etc) will cause your 436 * current activity to be <em>destroyed</em>, going through the normal activity 437 * lifecycle process of {@link #onPause}, 438 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 439 * had been in the foreground or visible to the user, once {@link #onDestroy} is 440 * called in that instance then a new instance of the activity will be 441 * created, with whatever savedInstanceState the previous instance had generated 442 * from {@link #onSaveInstanceState}.</p> 443 * 444 * <p>This is done because any application resource, 445 * including layout files, can change based on any configuration value. Thus 446 * the only safe way to handle a configuration change is to re-retrieve all 447 * resources, including layouts, drawables, and strings. Because activities 448 * must already know how to save their state and re-create themselves from 449 * that state, this is a convenient way to have an activity restart itself 450 * with a new configuration.</p> 451 * 452 * <p>In some special cases, you may want to bypass restarting of your 453 * activity based on one or more types of configuration changes. This is 454 * done with the {@link android.R.attr#configChanges android:configChanges} 455 * attribute in its manifest. For any types of configuration changes you say 456 * that you handle there, you will receive a call to your current activity's 457 * {@link #onConfigurationChanged} method instead of being restarted. If 458 * a configuration change involves any that you do not handle, however, the 459 * activity will still be restarted and {@link #onConfigurationChanged} 460 * will not be called.</p> 461 * 462 * <a name="StartingActivities"></a> 463 * <h3>Starting Activities and Getting Results</h3> 464 * 465 * <p>The {@link android.app.Activity#startActivity} 466 * method is used to start a 467 * new activity, which will be placed at the top of the activity stack. It 468 * takes a single argument, an {@link android.content.Intent Intent}, 469 * which describes the activity 470 * to be executed.</p> 471 * 472 * <p>Sometimes you want to get a result back from an activity when it 473 * ends. For example, you may start an activity that lets the user pick 474 * a person in a list of contacts; when it ends, it returns the person 475 * that was selected. To do this, you call the 476 * {@link android.app.Activity#startActivityForResult(Intent, int)} 477 * version with a second integer parameter identifying the call. The result 478 * will come back through your {@link android.app.Activity#onActivityResult} 479 * method.</p> 480 * 481 * <p>When an activity exits, it can call 482 * {@link android.app.Activity#setResult(int)} 483 * to return data back to its parent. It must always supply a result code, 484 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 485 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 486 * return back an Intent containing any additional data it wants. All of this 487 * information appears back on the 488 * parent's <code>Activity.onActivityResult()</code>, along with the integer 489 * identifier it originally supplied.</p> 490 * 491 * <p>If a child activity fails for any reason (such as crashing), the parent 492 * activity will receive a result with the code RESULT_CANCELED.</p> 493 * 494 * <pre class="prettyprint"> 495 * public class MyActivity extends Activity { 496 * ... 497 * 498 * static final int PICK_CONTACT_REQUEST = 0; 499 * 500 * public boolean onKeyDown(int keyCode, KeyEvent event) { 501 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 502 * // When the user center presses, let them pick a contact. 503 * startActivityForResult( 504 * new Intent(Intent.ACTION_PICK, 505 * new Uri("content://contacts")), 506 * PICK_CONTACT_REQUEST); 507 * return true; 508 * } 509 * return false; 510 * } 511 * 512 * protected void onActivityResult(int requestCode, int resultCode, 513 * Intent data) { 514 * if (requestCode == PICK_CONTACT_REQUEST) { 515 * if (resultCode == RESULT_OK) { 516 * // A contact was picked. Here we will just display it 517 * // to the user. 518 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 519 * } 520 * } 521 * } 522 * } 523 * </pre> 524 * 525 * <a name="SavingPersistentState"></a> 526 * <h3>Saving Persistent State</h3> 527 * 528 * <p>There are generally two kinds of persistent state than an activity 529 * will deal with: shared document-like data (typically stored in a SQLite 530 * database using a {@linkplain android.content.ContentProvider content provider}) 531 * and internal state such as user preferences.</p> 532 * 533 * <p>For content provider data, we suggest that activities use a 534 * "edit in place" user model. That is, any edits a user makes are effectively 535 * made immediately without requiring an additional confirmation step. 536 * Supporting this model is generally a simple matter of following two rules:</p> 537 * 538 * <ul> 539 * <li> <p>When creating a new document, the backing database entry or file for 540 * it is created immediately. For example, if the user chooses to write 541 * a new e-mail, a new entry for that e-mail is created as soon as they 542 * start entering data, so that if they go to any other activity after 543 * that point this e-mail will now appear in the list of drafts.</p> 544 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 545 * commit to the backing content provider or file any changes the user 546 * has made. This ensures that those changes will be seen by any other 547 * activity that is about to run. You will probably want to commit 548 * your data even more aggressively at key times during your 549 * activity's lifecycle: for example before starting a new 550 * activity, before finishing your own activity, when the user 551 * switches between input fields, etc.</p> 552 * </ul> 553 * 554 * <p>This model is designed to prevent data loss when a user is navigating 555 * between activities, and allows the system to safely kill an activity (because 556 * system resources are needed somewhere else) at any time after it has been 557 * paused. Note this implies 558 * that the user pressing BACK from your activity does <em>not</em> 559 * mean "cancel" -- it means to leave the activity with its current contents 560 * saved away. Canceling edits in an activity must be provided through 561 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 562 * 563 * <p>See the {@linkplain android.content.ContentProvider content package} for 564 * more information about content providers. These are a key aspect of how 565 * different activities invoke and propagate data between themselves.</p> 566 * 567 * <p>The Activity class also provides an API for managing internal persistent state 568 * associated with an activity. This can be used, for example, to remember 569 * the user's preferred initial display in a calendar (day view or week view) 570 * or the user's default home page in a web browser.</p> 571 * 572 * <p>Activity persistent state is managed 573 * with the method {@link #getPreferences}, 574 * allowing you to retrieve and 575 * modify a set of name/value pairs associated with the activity. To use 576 * preferences that are shared across multiple application components 577 * (activities, receivers, services, providers), you can use the underlying 578 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 579 * to retrieve a preferences 580 * object stored under a specific name. 581 * (Note that it is not possible to share settings data across application 582 * packages -- for that you will need a content provider.)</p> 583 * 584 * <p>Here is an excerpt from a calendar activity that stores the user's 585 * preferred view mode in its persistent settings:</p> 586 * 587 * <pre class="prettyprint"> 588 * public class CalendarActivity extends Activity { 589 * ... 590 * 591 * static final int DAY_VIEW_MODE = 0; 592 * static final int WEEK_VIEW_MODE = 1; 593 * 594 * private SharedPreferences mPrefs; 595 * private int mCurViewMode; 596 * 597 * protected void onCreate(Bundle savedInstanceState) { 598 * super.onCreate(savedInstanceState); 599 * 600 * SharedPreferences mPrefs = getSharedPreferences(); 601 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 602 * } 603 * 604 * protected void onPause() { 605 * super.onPause(); 606 * 607 * SharedPreferences.Editor ed = mPrefs.edit(); 608 * ed.putInt("view_mode", mCurViewMode); 609 * ed.commit(); 610 * } 611 * } 612 * </pre> 613 * 614 * <a name="Permissions"></a> 615 * <h3>Permissions</h3> 616 * 617 * <p>The ability to start a particular Activity can be enforced when it is 618 * declared in its 619 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 620 * tag. By doing so, other applications will need to declare a corresponding 621 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 622 * element in their own manifest to be able to start that activity. 623 * 624 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 625 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 626 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 627 * Activity access to the specific URIs in the Intent. Access will remain 628 * until the Activity has finished (it will remain across the hosting 629 * process being killed and other temporary destruction). As of 630 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 631 * was already created and a new Intent is being delivered to 632 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 633 * to the existing ones it holds. 634 * 635 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 636 * document for more information on permissions and security in general. 637 * 638 * <a name="ProcessLifecycle"></a> 639 * <h3>Process Lifecycle</h3> 640 * 641 * <p>The Android system attempts to keep application process around for as 642 * long as possible, but eventually will need to remove old processes when 643 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 644 * Lifecycle</a>, the decision about which process to remove is intimately 645 * tied to the state of the user's interaction with it. In general, there 646 * are four states a process can be in based on the activities running in it, 647 * listed here in order of importance. The system will kill less important 648 * processes (the last ones) before it resorts to killing more important 649 * processes (the first ones). 650 * 651 * <ol> 652 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 653 * that the user is currently interacting with) is considered the most important. 654 * Its process will only be killed as a last resort, if it uses more memory 655 * than is available on the device. Generally at this point the device has 656 * reached a memory paging state, so this is required in order to keep the user 657 * interface responsive. 658 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 659 * but not in the foreground, such as one sitting behind a foreground dialog) 660 * is considered extremely important and will not be killed unless that is 661 * required to keep the foreground activity running. 662 * <li> <p>A <b>background activity</b> (an activity that is not visible to 663 * the user and has been paused) is no longer critical, so the system may 664 * safely kill its process to reclaim memory for other foreground or 665 * visible processes. If its process needs to be killed, when the user navigates 666 * back to the activity (making it visible on the screen again), its 667 * {@link #onCreate} method will be called with the savedInstanceState it had previously 668 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 669 * state as the user last left it. 670 * <li> <p>An <b>empty process</b> is one hosting no activities or other 671 * application components (such as {@link Service} or 672 * {@link android.content.BroadcastReceiver} classes). These are killed very 673 * quickly by the system as memory becomes low. For this reason, any 674 * background operation you do outside of an activity must be executed in the 675 * context of an activity BroadcastReceiver or Service to ensure that the system 676 * knows it needs to keep your process around. 677 * </ol> 678 * 679 * <p>Sometimes an Activity may need to do a long-running operation that exists 680 * independently of the activity lifecycle itself. An example may be a camera 681 * application that allows you to upload a picture to a web site. The upload 682 * may take a long time, and the application should allow the user to leave 683 * the application will it is executing. To accomplish this, your Activity 684 * should start a {@link Service} in which the upload takes place. This allows 685 * the system to properly prioritize your process (considering it to be more 686 * important than other non-visible applications) for the duration of the 687 * upload, independent of whether the original activity is paused, stopped, 688 * or finished. 689 */ 690public class Activity extends ContextThemeWrapper 691 implements LayoutInflater.Factory2, 692 Window.Callback, KeyEvent.Callback, 693 OnCreateContextMenuListener, ComponentCallbacks2, 694 Window.OnWindowDismissedCallback, WindowControllerCallback { 695 private static final String TAG = "Activity"; 696 private static final boolean DEBUG_LIFECYCLE = false; 697 698 /** Standard activity result: operation canceled. */ 699 public static final int RESULT_CANCELED = 0; 700 /** Standard activity result: operation succeeded. */ 701 public static final int RESULT_OK = -1; 702 /** Start of user-defined activity results. */ 703 public static final int RESULT_FIRST_USER = 1; 704 705 /** @hide Task isn't finished when activity is finished */ 706 public static final int DONT_FINISH_TASK_WITH_ACTIVITY = 0; 707 /** 708 * @hide Task is finished if the finishing activity is the root of the task. To preserve the 709 * past behavior the task is also removed from recents. 710 */ 711 public static final int FINISH_TASK_WITH_ROOT_ACTIVITY = 1; 712 /** 713 * @hide Task is finished along with the finishing activity, but it is not removed from 714 * recents. 715 */ 716 public static final int FINISH_TASK_WITH_ACTIVITY = 2; 717 718 static final String FRAGMENTS_TAG = "android:fragments"; 719 720 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 721 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 722 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 723 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 724 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 725 private static final String HAS_CURENT_PERMISSIONS_REQUEST_KEY = 726 "android:hasCurrentPermissionsRequest"; 727 728 private static final String REQUEST_PERMISSIONS_WHO_PREFIX = "@android:requestPermissions:"; 729 730 private static class ManagedDialog { 731 Dialog mDialog; 732 Bundle mArgs; 733 } 734 private SparseArray<ManagedDialog> mManagedDialogs; 735 736 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 737 private Instrumentation mInstrumentation; 738 private IBinder mToken; 739 private int mIdent; 740 /*package*/ String mEmbeddedID; 741 private Application mApplication; 742 /*package*/ Intent mIntent; 743 /*package*/ String mReferrer; 744 private ComponentName mComponent; 745 /*package*/ ActivityInfo mActivityInfo; 746 /*package*/ ActivityThread mMainThread; 747 Activity mParent; 748 boolean mCalled; 749 /*package*/ boolean mResumed; 750 private boolean mStopped; 751 boolean mFinished; 752 boolean mStartedActivity; 753 private boolean mDestroyed; 754 private boolean mDoReportFullyDrawn = true; 755 /** true if the activity is going through a transient pause */ 756 /*package*/ boolean mTemporaryPause = false; 757 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 758 /*package*/ boolean mChangingConfigurations = false; 759 /*package*/ int mConfigChangeFlags; 760 /*package*/ Configuration mCurrentConfig; 761 private SearchManager mSearchManager; 762 private MenuInflater mMenuInflater; 763 764 static final class NonConfigurationInstances { 765 Object activity; 766 HashMap<String, Object> children; 767 List<Fragment> fragments; 768 ArrayMap<String, LoaderManager> loaders; 769 VoiceInteractor voiceInteractor; 770 } 771 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 772 773 private Window mWindow; 774 775 private WindowManager mWindowManager; 776 /*package*/ View mDecor = null; 777 /*package*/ boolean mWindowAdded = false; 778 /*package*/ boolean mVisibleFromServer = false; 779 /*package*/ boolean mVisibleFromClient = true; 780 /*package*/ ActionBar mActionBar = null; 781 private boolean mEnableDefaultActionBarUp; 782 783 private VoiceInteractor mVoiceInteractor; 784 785 private CharSequence mTitle; 786 private int mTitleColor = 0; 787 788 // we must have a handler before the FragmentController is constructed 789 final Handler mHandler = new Handler(); 790 final FragmentController mFragments = FragmentController.createController(new HostCallbacks()); 791 792 // Most recent call to requestVisibleBehind(). 793 boolean mVisibleBehind; 794 795 private static final class ManagedCursor { 796 ManagedCursor(Cursor cursor) { 797 mCursor = cursor; 798 mReleased = false; 799 mUpdated = false; 800 } 801 802 private final Cursor mCursor; 803 private boolean mReleased; 804 private boolean mUpdated; 805 } 806 private final ArrayList<ManagedCursor> mManagedCursors = 807 new ArrayList<ManagedCursor>(); 808 809 // protected by synchronized (this) 810 int mResultCode = RESULT_CANCELED; 811 Intent mResultData = null; 812 813 private TranslucentConversionListener mTranslucentCallback; 814 private boolean mChangeCanvasToTranslucent; 815 816 private SearchEvent mSearchEvent; 817 818 private boolean mTitleReady = false; 819 private int mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 820 821 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 822 private SpannableStringBuilder mDefaultKeySsb = null; 823 824 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 825 826 @SuppressWarnings("unused") 827 private final Object mInstanceTracker = StrictMode.trackActivity(this); 828 829 private Thread mUiThread; 830 831 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 832 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 833 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 834 835 private boolean mHasCurrentPermissionsRequest; 836 private boolean mEatKeyUpEvent; 837 838 /** Return the intent that started this activity. */ 839 public Intent getIntent() { 840 return mIntent; 841 } 842 843 /** 844 * Change the intent returned by {@link #getIntent}. This holds a 845 * reference to the given intent; it does not copy it. Often used in 846 * conjunction with {@link #onNewIntent}. 847 * 848 * @param newIntent The new Intent object to return from getIntent 849 * 850 * @see #getIntent 851 * @see #onNewIntent 852 */ 853 public void setIntent(Intent newIntent) { 854 mIntent = newIntent; 855 } 856 857 /** Return the application that owns this activity. */ 858 public final Application getApplication() { 859 return mApplication; 860 } 861 862 /** Is this activity embedded inside of another activity? */ 863 public final boolean isChild() { 864 return mParent != null; 865 } 866 867 /** Return the parent activity if this view is an embedded child. */ 868 public final Activity getParent() { 869 return mParent; 870 } 871 872 /** Retrieve the window manager for showing custom windows. */ 873 public WindowManager getWindowManager() { 874 return mWindowManager; 875 } 876 877 /** 878 * Retrieve the current {@link android.view.Window} for the activity. 879 * This can be used to directly access parts of the Window API that 880 * are not available through Activity/Screen. 881 * 882 * @return Window The current window, or null if the activity is not 883 * visual. 884 */ 885 public Window getWindow() { 886 return mWindow; 887 } 888 889 /** 890 * Return the LoaderManager for this activity, creating it if needed. 891 */ 892 public LoaderManager getLoaderManager() { 893 return mFragments.getLoaderManager(); 894 } 895 896 /** 897 * Calls {@link android.view.Window#getCurrentFocus} on the 898 * Window of this Activity to return the currently focused view. 899 * 900 * @return View The current View with focus or null. 901 * 902 * @see #getWindow 903 * @see android.view.Window#getCurrentFocus 904 */ 905 @Nullable 906 public View getCurrentFocus() { 907 return mWindow != null ? mWindow.getCurrentFocus() : null; 908 } 909 910 /** 911 * Called when the activity is starting. This is where most initialization 912 * should go: calling {@link #setContentView(int)} to inflate the 913 * activity's UI, using {@link #findViewById} to programmatically interact 914 * with widgets in the UI, calling 915 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 916 * cursors for data being displayed, etc. 917 * 918 * <p>You can call {@link #finish} from within this function, in 919 * which case onDestroy() will be immediately called without any of the rest 920 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 921 * {@link #onPause}, etc) executing. 922 * 923 * <p><em>Derived classes must call through to the super class's 924 * implementation of this method. If they do not, an exception will be 925 * thrown.</em></p> 926 * 927 * @param savedInstanceState If the activity is being re-initialized after 928 * previously being shut down then this Bundle contains the data it most 929 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 930 * 931 * @see #onStart 932 * @see #onSaveInstanceState 933 * @see #onRestoreInstanceState 934 * @see #onPostCreate 935 */ 936 @MainThread 937 @CallSuper 938 protected void onCreate(@Nullable Bundle savedInstanceState) { 939 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 940 if (mLastNonConfigurationInstances != null) { 941 mFragments.restoreLoaderNonConfig(mLastNonConfigurationInstances.loaders); 942 } 943 if (mActivityInfo.parentActivityName != null) { 944 if (mActionBar == null) { 945 mEnableDefaultActionBarUp = true; 946 } else { 947 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 948 } 949 } 950 if (savedInstanceState != null) { 951 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 952 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 953 ? mLastNonConfigurationInstances.fragments : null); 954 } 955 mFragments.dispatchCreate(); 956 getApplication().dispatchActivityCreated(this, savedInstanceState); 957 if (mVoiceInteractor != null) { 958 mVoiceInteractor.attachActivity(this); 959 } 960 mCalled = true; 961 } 962 963 /** 964 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 965 * the attribute {@link android.R.attr#persistableMode} set to 966 * <code>persistAcrossReboots</code>. 967 * 968 * @param savedInstanceState if the activity is being re-initialized after 969 * previously being shut down then this Bundle contains the data it most 970 * recently supplied in {@link #onSaveInstanceState}. 971 * <b><i>Note: Otherwise it is null.</i></b> 972 * @param persistentState if the activity is being re-initialized after 973 * previously being shut down or powered off then this Bundle contains the data it most 974 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 975 * <b><i>Note: Otherwise it is null.</i></b> 976 * 977 * @see #onCreate(android.os.Bundle) 978 * @see #onStart 979 * @see #onSaveInstanceState 980 * @see #onRestoreInstanceState 981 * @see #onPostCreate 982 */ 983 public void onCreate(@Nullable Bundle savedInstanceState, 984 @Nullable PersistableBundle persistentState) { 985 onCreate(savedInstanceState); 986 } 987 988 /** 989 * The hook for {@link ActivityThread} to restore the state of this activity. 990 * 991 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 992 * {@link #restoreManagedDialogs(android.os.Bundle)}. 993 * 994 * @param savedInstanceState contains the saved state 995 */ 996 final void performRestoreInstanceState(Bundle savedInstanceState) { 997 onRestoreInstanceState(savedInstanceState); 998 restoreManagedDialogs(savedInstanceState); 999 } 1000 1001 /** 1002 * The hook for {@link ActivityThread} to restore the state of this activity. 1003 * 1004 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 1005 * {@link #restoreManagedDialogs(android.os.Bundle)}. 1006 * 1007 * @param savedInstanceState contains the saved state 1008 * @param persistentState contains the persistable saved state 1009 */ 1010 final void performRestoreInstanceState(Bundle savedInstanceState, 1011 PersistableBundle persistentState) { 1012 onRestoreInstanceState(savedInstanceState, persistentState); 1013 if (savedInstanceState != null) { 1014 restoreManagedDialogs(savedInstanceState); 1015 } 1016 } 1017 1018 /** 1019 * This method is called after {@link #onStart} when the activity is 1020 * being re-initialized from a previously saved state, given here in 1021 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 1022 * to restore their state, but it is sometimes convenient to do it here 1023 * after all of the initialization has been done or to allow subclasses to 1024 * decide whether to use your default implementation. The default 1025 * implementation of this method performs a restore of any view state that 1026 * had previously been frozen by {@link #onSaveInstanceState}. 1027 * 1028 * <p>This method is called between {@link #onStart} and 1029 * {@link #onPostCreate}. 1030 * 1031 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1032 * 1033 * @see #onCreate 1034 * @see #onPostCreate 1035 * @see #onResume 1036 * @see #onSaveInstanceState 1037 */ 1038 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1039 if (mWindow != null) { 1040 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1041 if (windowState != null) { 1042 mWindow.restoreHierarchyState(windowState); 1043 } 1044 } 1045 } 1046 1047 /** 1048 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1049 * created with the attribute {@link android.R.attr#persistableMode} set to 1050 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1051 * came from the restored PersistableBundle first 1052 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1053 * 1054 * <p>This method is called between {@link #onStart} and 1055 * {@link #onPostCreate}. 1056 * 1057 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1058 * 1059 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1060 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1061 * 1062 * @see #onRestoreInstanceState(Bundle) 1063 * @see #onCreate 1064 * @see #onPostCreate 1065 * @see #onResume 1066 * @see #onSaveInstanceState 1067 */ 1068 public void onRestoreInstanceState(Bundle savedInstanceState, 1069 PersistableBundle persistentState) { 1070 if (savedInstanceState != null) { 1071 onRestoreInstanceState(savedInstanceState); 1072 } 1073 } 1074 1075 /** 1076 * Restore the state of any saved managed dialogs. 1077 * 1078 * @param savedInstanceState The bundle to restore from. 1079 */ 1080 private void restoreManagedDialogs(Bundle savedInstanceState) { 1081 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1082 if (b == null) { 1083 return; 1084 } 1085 1086 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1087 final int numDialogs = ids.length; 1088 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1089 for (int i = 0; i < numDialogs; i++) { 1090 final Integer dialogId = ids[i]; 1091 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1092 if (dialogState != null) { 1093 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1094 // so tell createDialog() not to do it, otherwise we get an exception 1095 final ManagedDialog md = new ManagedDialog(); 1096 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1097 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1098 if (md.mDialog != null) { 1099 mManagedDialogs.put(dialogId, md); 1100 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1101 md.mDialog.onRestoreInstanceState(dialogState); 1102 } 1103 } 1104 } 1105 } 1106 1107 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1108 final Dialog dialog = onCreateDialog(dialogId, args); 1109 if (dialog == null) { 1110 return null; 1111 } 1112 dialog.dispatchOnCreate(state); 1113 return dialog; 1114 } 1115 1116 private static String savedDialogKeyFor(int key) { 1117 return SAVED_DIALOG_KEY_PREFIX + key; 1118 } 1119 1120 private static String savedDialogArgsKeyFor(int key) { 1121 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1122 } 1123 1124 /** 1125 * Called when activity start-up is complete (after {@link #onStart} 1126 * and {@link #onRestoreInstanceState} have been called). Applications will 1127 * generally not implement this method; it is intended for system 1128 * classes to do final initialization after application code has run. 1129 * 1130 * <p><em>Derived classes must call through to the super class's 1131 * implementation of this method. If they do not, an exception will be 1132 * thrown.</em></p> 1133 * 1134 * @param savedInstanceState If the activity is being re-initialized after 1135 * previously being shut down then this Bundle contains the data it most 1136 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1137 * @see #onCreate 1138 */ 1139 @CallSuper 1140 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1141 if (!isChild()) { 1142 mTitleReady = true; 1143 onTitleChanged(getTitle(), getTitleColor()); 1144 } 1145 mCalled = true; 1146 } 1147 1148 /** 1149 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1150 * created with the attribute {@link android.R.attr#persistableMode} set to 1151 * <code>persistAcrossReboots</code>. 1152 * 1153 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1154 * @param persistentState The data caming from the PersistableBundle first 1155 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1156 * 1157 * @see #onCreate 1158 */ 1159 public void onPostCreate(@Nullable Bundle savedInstanceState, 1160 @Nullable PersistableBundle persistentState) { 1161 onPostCreate(savedInstanceState); 1162 } 1163 1164 /** 1165 * Called after {@link #onCreate} — or after {@link #onRestart} when 1166 * the activity had been stopped, but is now again being displayed to the 1167 * user. It will be followed by {@link #onResume}. 1168 * 1169 * <p><em>Derived classes must call through to the super class's 1170 * implementation of this method. If they do not, an exception will be 1171 * thrown.</em></p> 1172 * 1173 * @see #onCreate 1174 * @see #onStop 1175 * @see #onResume 1176 */ 1177 @CallSuper 1178 protected void onStart() { 1179 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1180 mCalled = true; 1181 1182 mFragments.doLoaderStart(); 1183 1184 getApplication().dispatchActivityStarted(this); 1185 } 1186 1187 /** 1188 * Called after {@link #onStop} when the current activity is being 1189 * re-displayed to the user (the user has navigated back to it). It will 1190 * be followed by {@link #onStart} and then {@link #onResume}. 1191 * 1192 * <p>For activities that are using raw {@link Cursor} objects (instead of 1193 * creating them through 1194 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1195 * this is usually the place 1196 * where the cursor should be requeried (because you had deactivated it in 1197 * {@link #onStop}. 1198 * 1199 * <p><em>Derived classes must call through to the super class's 1200 * implementation of this method. If they do not, an exception will be 1201 * thrown.</em></p> 1202 * 1203 * @see #onStop 1204 * @see #onStart 1205 * @see #onResume 1206 */ 1207 @CallSuper 1208 protected void onRestart() { 1209 mCalled = true; 1210 } 1211 1212 /** 1213 * Called when an {@link #onResume} is coming up, prior to other pre-resume callbacks 1214 * such as {@link #onNewIntent} and {@link #onActivityResult}. This is primarily intended 1215 * to give the activity a hint that its state is no longer saved -- it will generally 1216 * be called after {@link #onSaveInstanceState} and prior to the activity being 1217 * resumed/started again. 1218 */ 1219 public void onStateNotSaved() { 1220 } 1221 1222 /** 1223 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1224 * {@link #onPause}, for your activity to start interacting with the user. 1225 * This is a good place to begin animations, open exclusive-access devices 1226 * (such as the camera), etc. 1227 * 1228 * <p>Keep in mind that onResume is not the best indicator that your activity 1229 * is visible to the user; a system window such as the keyguard may be in 1230 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1231 * activity is visible to the user (for example, to resume a game). 1232 * 1233 * <p><em>Derived classes must call through to the super class's 1234 * implementation of this method. If they do not, an exception will be 1235 * thrown.</em></p> 1236 * 1237 * @see #onRestoreInstanceState 1238 * @see #onRestart 1239 * @see #onPostResume 1240 * @see #onPause 1241 */ 1242 @CallSuper 1243 protected void onResume() { 1244 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1245 getApplication().dispatchActivityResumed(this); 1246 mActivityTransitionState.onResume(); 1247 mCalled = true; 1248 } 1249 1250 /** 1251 * Called when activity resume is complete (after {@link #onResume} has 1252 * been called). Applications will generally not implement this method; 1253 * it is intended for system classes to do final setup after application 1254 * resume code has run. 1255 * 1256 * <p><em>Derived classes must call through to the super class's 1257 * implementation of this method. If they do not, an exception will be 1258 * thrown.</em></p> 1259 * 1260 * @see #onResume 1261 */ 1262 @CallSuper 1263 protected void onPostResume() { 1264 final Window win = getWindow(); 1265 if (win != null) win.makeActive(); 1266 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1267 mCalled = true; 1268 } 1269 1270 void setVoiceInteractor(IVoiceInteractor voiceInteractor) { 1271 if (voiceInteractor == null) { 1272 mVoiceInteractor = null; 1273 } else { 1274 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 1275 Looper.myLooper()); 1276 } 1277 } 1278 1279 /** 1280 * Check whether this activity is running as part of a voice interaction with the user. 1281 * If true, it should perform its interaction with the user through the 1282 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1283 */ 1284 public boolean isVoiceInteraction() { 1285 return mVoiceInteractor != null; 1286 } 1287 1288 /** 1289 * Like {@link #isVoiceInteraction}, but only returns true if this is also the root 1290 * of a voice interaction. That is, returns true if this activity was directly 1291 * started by the voice interaction service as the initiation of a voice interaction. 1292 * Otherwise, for example if it was started by another activity while under voice 1293 * interaction, returns false. 1294 */ 1295 public boolean isVoiceInteractionRoot() { 1296 try { 1297 return mVoiceInteractor != null 1298 && ActivityManagerNative.getDefault().isRootVoiceInteraction(mToken); 1299 } catch (RemoteException e) { 1300 } 1301 return false; 1302 } 1303 1304 /** 1305 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1306 * interact with this activity. 1307 */ 1308 public VoiceInteractor getVoiceInteractor() { 1309 return mVoiceInteractor; 1310 } 1311 1312 /** 1313 * Queries whether the currently enabled voice interaction service supports returning 1314 * a voice interactor for use by the activity. This is valid only for the duration of the 1315 * activity. 1316 * 1317 * @return whether the current voice interaction service supports local voice interaction 1318 */ 1319 public boolean isLocalVoiceInteractionSupported() { 1320 try { 1321 return ActivityManagerNative.getDefault().supportsLocalVoiceInteraction(); 1322 } catch (RemoteException re) { 1323 } 1324 return false; 1325 } 1326 1327 /** 1328 * Starts a local voice interaction session. When ready, 1329 * {@link #onLocalVoiceInteractionStarted()} is called. You can pass a bundle of private options 1330 * to the registered voice interaction service. 1331 * @param privateOptions a Bundle of private arguments to the current voice interaction service 1332 */ 1333 public void startLocalVoiceInteraction(Bundle privateOptions) { 1334 try { 1335 ActivityManagerNative.getDefault().startLocalVoiceInteraction(mToken, privateOptions); 1336 } catch (RemoteException re) { 1337 } 1338 } 1339 1340 /** 1341 * Callback to indicate that {@link #startLocalVoiceInteraction(Bundle)} has resulted in a 1342 * voice interaction session being started. You can now retrieve a voice interactor using 1343 * {@link #getVoiceInteractor()}. 1344 */ 1345 public void onLocalVoiceInteractionStarted() { 1346 Log.i(TAG, "onLocalVoiceInteractionStarted! " + getVoiceInteractor()); 1347 } 1348 1349 /** 1350 * Callback to indicate that the local voice interaction has stopped for some 1351 * reason. 1352 */ 1353 public void onLocalVoiceInteractionStopped() { 1354 Log.i(TAG, "onLocalVoiceInteractionStopped :( " + getVoiceInteractor()); 1355 } 1356 1357 /** 1358 * Request to terminate the current voice interaction that was previously started 1359 * using {@link #startLocalVoiceInteraction(Bundle)}. 1360 */ 1361 public void stopLocalVoiceInteraction() { 1362 try { 1363 ActivityManagerNative.getDefault().stopLocalVoiceInteraction(mToken); 1364 } catch (RemoteException re) { 1365 } 1366 } 1367 1368 /** 1369 * This is called for activities that set launchMode to "singleTop" in 1370 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1371 * flag when calling {@link #startActivity}. In either case, when the 1372 * activity is re-launched while at the top of the activity stack instead 1373 * of a new instance of the activity being started, onNewIntent() will be 1374 * called on the existing instance with the Intent that was used to 1375 * re-launch it. 1376 * 1377 * <p>An activity will always be paused before receiving a new intent, so 1378 * you can count on {@link #onResume} being called after this method. 1379 * 1380 * <p>Note that {@link #getIntent} still returns the original Intent. You 1381 * can use {@link #setIntent} to update it to this new Intent. 1382 * 1383 * @param intent The new intent that was started for the activity. 1384 * 1385 * @see #getIntent 1386 * @see #setIntent 1387 * @see #onResume 1388 */ 1389 protected void onNewIntent(Intent intent) { 1390 } 1391 1392 /** 1393 * The hook for {@link ActivityThread} to save the state of this activity. 1394 * 1395 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1396 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1397 * 1398 * @param outState The bundle to save the state to. 1399 */ 1400 final void performSaveInstanceState(Bundle outState) { 1401 onSaveInstanceState(outState); 1402 saveManagedDialogs(outState); 1403 mActivityTransitionState.saveState(outState); 1404 storeHasCurrentPermissionRequest(outState); 1405 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1406 } 1407 1408 /** 1409 * The hook for {@link ActivityThread} to save the state of this activity. 1410 * 1411 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1412 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1413 * 1414 * @param outState The bundle to save the state to. 1415 * @param outPersistentState The bundle to save persistent state to. 1416 */ 1417 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1418 onSaveInstanceState(outState, outPersistentState); 1419 saveManagedDialogs(outState); 1420 storeHasCurrentPermissionRequest(outState); 1421 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1422 ", " + outPersistentState); 1423 } 1424 1425 /** 1426 * Called to retrieve per-instance state from an activity before being killed 1427 * so that the state can be restored in {@link #onCreate} or 1428 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1429 * will be passed to both). 1430 * 1431 * <p>This method is called before an activity may be killed so that when it 1432 * comes back some time in the future it can restore its state. For example, 1433 * if activity B is launched in front of activity A, and at some point activity 1434 * A is killed to reclaim resources, activity A will have a chance to save the 1435 * current state of its user interface via this method so that when the user 1436 * returns to activity A, the state of the user interface can be restored 1437 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1438 * 1439 * <p>Do not confuse this method with activity lifecycle callbacks such as 1440 * {@link #onPause}, which is always called when an activity is being placed 1441 * in the background or on its way to destruction, or {@link #onStop} which 1442 * is called before destruction. One example of when {@link #onPause} and 1443 * {@link #onStop} is called and not this method is when a user navigates back 1444 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1445 * on B because that particular instance will never be restored, so the 1446 * system avoids calling it. An example when {@link #onPause} is called and 1447 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1448 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1449 * killed during the lifetime of B since the state of the user interface of 1450 * A will stay intact. 1451 * 1452 * <p>The default implementation takes care of most of the UI per-instance 1453 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1454 * view in the hierarchy that has an id, and by saving the id of the currently 1455 * focused view (all of which is restored by the default implementation of 1456 * {@link #onRestoreInstanceState}). If you override this method to save additional 1457 * information not captured by each individual view, you will likely want to 1458 * call through to the default implementation, otherwise be prepared to save 1459 * all of the state of each view yourself. 1460 * 1461 * <p>If called, this method will occur before {@link #onStop}. There are 1462 * no guarantees about whether it will occur before or after {@link #onPause}. 1463 * 1464 * @param outState Bundle in which to place your saved state. 1465 * 1466 * @see #onCreate 1467 * @see #onRestoreInstanceState 1468 * @see #onPause 1469 */ 1470 protected void onSaveInstanceState(Bundle outState) { 1471 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1472 Parcelable p = mFragments.saveAllState(); 1473 if (p != null) { 1474 outState.putParcelable(FRAGMENTS_TAG, p); 1475 } 1476 getApplication().dispatchActivitySaveInstanceState(this, outState); 1477 } 1478 1479 /** 1480 * This is the same as {@link #onSaveInstanceState} but is called for activities 1481 * created with the attribute {@link android.R.attr#persistableMode} set to 1482 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1483 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1484 * the first time that this activity is restarted following the next device reboot. 1485 * 1486 * @param outState Bundle in which to place your saved state. 1487 * @param outPersistentState State which will be saved across reboots. 1488 * 1489 * @see #onSaveInstanceState(Bundle) 1490 * @see #onCreate 1491 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1492 * @see #onPause 1493 */ 1494 public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1495 onSaveInstanceState(outState); 1496 } 1497 1498 /** 1499 * Save the state of any managed dialogs. 1500 * 1501 * @param outState place to store the saved state. 1502 */ 1503 private void saveManagedDialogs(Bundle outState) { 1504 if (mManagedDialogs == null) { 1505 return; 1506 } 1507 1508 final int numDialogs = mManagedDialogs.size(); 1509 if (numDialogs == 0) { 1510 return; 1511 } 1512 1513 Bundle dialogState = new Bundle(); 1514 1515 int[] ids = new int[mManagedDialogs.size()]; 1516 1517 // save each dialog's bundle, gather the ids 1518 for (int i = 0; i < numDialogs; i++) { 1519 final int key = mManagedDialogs.keyAt(i); 1520 ids[i] = key; 1521 final ManagedDialog md = mManagedDialogs.valueAt(i); 1522 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1523 if (md.mArgs != null) { 1524 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1525 } 1526 } 1527 1528 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1529 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1530 } 1531 1532 1533 /** 1534 * Called as part of the activity lifecycle when an activity is going into 1535 * the background, but has not (yet) been killed. The counterpart to 1536 * {@link #onResume}. 1537 * 1538 * <p>When activity B is launched in front of activity A, this callback will 1539 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1540 * so be sure to not do anything lengthy here. 1541 * 1542 * <p>This callback is mostly used for saving any persistent state the 1543 * activity is editing, to present a "edit in place" model to the user and 1544 * making sure nothing is lost if there are not enough resources to start 1545 * the new activity without first killing this one. This is also a good 1546 * place to do things like stop animations and other things that consume a 1547 * noticeable amount of CPU in order to make the switch to the next activity 1548 * as fast as possible, or to close resources that are exclusive access 1549 * such as the camera. 1550 * 1551 * <p>In situations where the system needs more memory it may kill paused 1552 * processes to reclaim resources. Because of this, you should be sure 1553 * that all of your state is saved by the time you return from 1554 * this function. In general {@link #onSaveInstanceState} is used to save 1555 * per-instance state in the activity and this method is used to store 1556 * global persistent data (in content providers, files, etc.) 1557 * 1558 * <p>After receiving this call you will usually receive a following call 1559 * to {@link #onStop} (after the next activity has been resumed and 1560 * displayed), however in some cases there will be a direct call back to 1561 * {@link #onResume} without going through the stopped state. 1562 * 1563 * <p><em>Derived classes must call through to the super class's 1564 * implementation of this method. If they do not, an exception will be 1565 * thrown.</em></p> 1566 * 1567 * @see #onResume 1568 * @see #onSaveInstanceState 1569 * @see #onStop 1570 */ 1571 @CallSuper 1572 protected void onPause() { 1573 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1574 getApplication().dispatchActivityPaused(this); 1575 mCalled = true; 1576 } 1577 1578 /** 1579 * Called as part of the activity lifecycle when an activity is about to go 1580 * into the background as the result of user choice. For example, when the 1581 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1582 * when an incoming phone call causes the in-call Activity to be automatically 1583 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1584 * the activity being interrupted. In cases when it is invoked, this method 1585 * is called right before the activity's {@link #onPause} callback. 1586 * 1587 * <p>This callback and {@link #onUserInteraction} are intended to help 1588 * activities manage status bar notifications intelligently; specifically, 1589 * for helping activities determine the proper time to cancel a notfication. 1590 * 1591 * @see #onUserInteraction() 1592 */ 1593 protected void onUserLeaveHint() { 1594 } 1595 1596 /** 1597 * Generate a new thumbnail for this activity. This method is called before 1598 * pausing the activity, and should draw into <var>outBitmap</var> the 1599 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1600 * can use the given <var>canvas</var>, which is configured to draw into the 1601 * bitmap, for rendering if desired. 1602 * 1603 * <p>The default implementation returns fails and does not draw a thumbnail; 1604 * this will result in the platform creating its own thumbnail if needed. 1605 * 1606 * @param outBitmap The bitmap to contain the thumbnail. 1607 * @param canvas Can be used to render into the bitmap. 1608 * 1609 * @return Return true if you have drawn into the bitmap; otherwise after 1610 * you return it will be filled with a default thumbnail. 1611 * 1612 * @see #onCreateDescription 1613 * @see #onSaveInstanceState 1614 * @see #onPause 1615 */ 1616 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1617 return false; 1618 } 1619 1620 /** 1621 * Generate a new description for this activity. This method is called 1622 * before pausing the activity and can, if desired, return some textual 1623 * description of its current state to be displayed to the user. 1624 * 1625 * <p>The default implementation returns null, which will cause you to 1626 * inherit the description from the previous activity. If all activities 1627 * return null, generally the label of the top activity will be used as the 1628 * description. 1629 * 1630 * @return A description of what the user is doing. It should be short and 1631 * sweet (only a few words). 1632 * 1633 * @see #onCreateThumbnail 1634 * @see #onSaveInstanceState 1635 * @see #onPause 1636 */ 1637 @Nullable 1638 public CharSequence onCreateDescription() { 1639 return null; 1640 } 1641 1642 /** 1643 * This is called when the user is requesting an assist, to build a full 1644 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1645 * application. You can override this method to place into the bundle anything 1646 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1647 * of the assist Intent. 1648 * 1649 * <p>This function will be called after any global assist callbacks that had 1650 * been registered with {@link Application#registerOnProvideAssistDataListener 1651 * Application.registerOnProvideAssistDataListener}. 1652 */ 1653 public void onProvideAssistData(Bundle data) { 1654 } 1655 1656 /** 1657 * This is called when the user is requesting an assist, to provide references 1658 * to content related to the current activity. Before being called, the 1659 * {@code outContent} Intent is filled with the base Intent of the activity (the Intent 1660 * returned by {@link #getIntent()}). The Intent's extras are stripped of any types 1661 * that are not valid for {@link PersistableBundle} or non-framework Parcelables, and 1662 * the flags {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION} and 1663 * {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION} are cleared from the Intent. 1664 * 1665 * <p>Custom implementation may adjust the content intent to better reflect the top-level 1666 * context of the activity, and fill in its ClipData with additional content of 1667 * interest that the user is currently viewing. For example, an image gallery application 1668 * that has launched in to an activity allowing the user to swipe through pictures should 1669 * modify the intent to reference the current image they are looking it; such an 1670 * application when showing a list of pictures should add a ClipData that has 1671 * references to all of the pictures currently visible on screen.</p> 1672 * 1673 * @param outContent The assist content to return. 1674 */ 1675 public void onProvideAssistContent(AssistContent outContent) { 1676 } 1677 1678 @Override 1679 public void onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> data, Menu menu) { 1680 if (menu == null) { 1681 return; 1682 } 1683 KeyboardShortcutGroup group = null; 1684 int menuSize = menu.size(); 1685 for (int i = 0; i < menuSize; ++i) { 1686 final MenuItem item = menu.getItem(i); 1687 final CharSequence title = item.getTitle(); 1688 final char alphaShortcut = item.getAlphabeticShortcut(); 1689 if (title != null && alphaShortcut != MIN_VALUE) { 1690 if (group == null) { 1691 group = new KeyboardShortcutGroup(null /* no label */); 1692 } 1693 group.addItem(new KeyboardShortcutInfo( 1694 title, alphaShortcut, KeyEvent.META_CTRL_ON)); 1695 } 1696 } 1697 if (group != null) { 1698 data.add(group); 1699 } 1700 } 1701 1702 /** 1703 * Ask to have the current assistant shown to the user. This only works if the calling 1704 * activity is the current foreground activity. It is the same as calling 1705 * {@link android.service.voice.VoiceInteractionService#showSession 1706 * VoiceInteractionService.showSession} and requesting all of the possible context. 1707 * The receiver will always see 1708 * {@link android.service.voice.VoiceInteractionSession#SHOW_SOURCE_APPLICATION} set. 1709 * @return Returns true if the assistant was successfully invoked, else false. For example 1710 * false will be returned if the caller is not the current top activity. 1711 */ 1712 public boolean showAssist(Bundle args) { 1713 try { 1714 return ActivityManagerNative.getDefault().showAssistFromActivity(mToken, args); 1715 } catch (RemoteException e) { 1716 } 1717 return false; 1718 } 1719 1720 /** 1721 * Called when you are no longer visible to the user. You will next 1722 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1723 * depending on later user activity. 1724 * 1725 * <p>Note that this method may never be called, in low memory situations 1726 * where the system does not have enough memory to keep your activity's 1727 * process running after its {@link #onPause} method is called. 1728 * 1729 * <p><em>Derived classes must call through to the super class's 1730 * implementation of this method. If they do not, an exception will be 1731 * thrown.</em></p> 1732 * 1733 * @see #onRestart 1734 * @see #onResume 1735 * @see #onSaveInstanceState 1736 * @see #onDestroy 1737 */ 1738 @CallSuper 1739 protected void onStop() { 1740 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1741 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1742 mActivityTransitionState.onStop(); 1743 getApplication().dispatchActivityStopped(this); 1744 mTranslucentCallback = null; 1745 mCalled = true; 1746 } 1747 1748 /** 1749 * Perform any final cleanup before an activity is destroyed. This can 1750 * happen either because the activity is finishing (someone called 1751 * {@link #finish} on it, or because the system is temporarily destroying 1752 * this instance of the activity to save space. You can distinguish 1753 * between these two scenarios with the {@link #isFinishing} method. 1754 * 1755 * <p><em>Note: do not count on this method being called as a place for 1756 * saving data! For example, if an activity is editing data in a content 1757 * provider, those edits should be committed in either {@link #onPause} or 1758 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1759 * free resources like threads that are associated with an activity, so 1760 * that a destroyed activity does not leave such things around while the 1761 * rest of its application is still running. There are situations where 1762 * the system will simply kill the activity's hosting process without 1763 * calling this method (or any others) in it, so it should not be used to 1764 * do things that are intended to remain around after the process goes 1765 * away. 1766 * 1767 * <p><em>Derived classes must call through to the super class's 1768 * implementation of this method. If they do not, an exception will be 1769 * thrown.</em></p> 1770 * 1771 * @see #onPause 1772 * @see #onStop 1773 * @see #finish 1774 * @see #isFinishing 1775 */ 1776 @CallSuper 1777 protected void onDestroy() { 1778 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1779 mCalled = true; 1780 1781 // dismiss any dialogs we are managing. 1782 if (mManagedDialogs != null) { 1783 final int numDialogs = mManagedDialogs.size(); 1784 for (int i = 0; i < numDialogs; i++) { 1785 final ManagedDialog md = mManagedDialogs.valueAt(i); 1786 if (md.mDialog.isShowing()) { 1787 md.mDialog.dismiss(); 1788 } 1789 } 1790 mManagedDialogs = null; 1791 } 1792 1793 // close any cursors we are managing. 1794 synchronized (mManagedCursors) { 1795 int numCursors = mManagedCursors.size(); 1796 for (int i = 0; i < numCursors; i++) { 1797 ManagedCursor c = mManagedCursors.get(i); 1798 if (c != null) { 1799 c.mCursor.close(); 1800 } 1801 } 1802 mManagedCursors.clear(); 1803 } 1804 1805 // Close any open search dialog 1806 if (mSearchManager != null) { 1807 mSearchManager.stopSearch(); 1808 } 1809 1810 if (mActionBar != null) { 1811 mActionBar.onDestroy(); 1812 } 1813 1814 getApplication().dispatchActivityDestroyed(this); 1815 } 1816 1817 /** 1818 * Report to the system that your app is now fully drawn, purely for diagnostic 1819 * purposes (calling it does not impact the visible behavior of the activity). 1820 * This is only used to help instrument application launch times, so that the 1821 * app can report when it is fully in a usable state; without this, the only thing 1822 * the system itself can determine is the point at which the activity's window 1823 * is <em>first</em> drawn and displayed. To participate in app launch time 1824 * measurement, you should always call this method after first launch (when 1825 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1826 * entirely drawn your UI and populated with all of the significant data. You 1827 * can safely call this method any time after first launch as well, in which case 1828 * it will simply be ignored. 1829 */ 1830 public void reportFullyDrawn() { 1831 if (mDoReportFullyDrawn) { 1832 mDoReportFullyDrawn = false; 1833 try { 1834 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1835 } catch (RemoteException e) { 1836 } 1837 } 1838 } 1839 1840 /** 1841 * Called by the system when the activity changes from fullscreen mode to multi-window mode and 1842 * visa-versa. 1843 * @see android.R.attr#resizeableActivity 1844 * 1845 * @param multiWindowMode True if the activity is in multi-window mode. 1846 */ 1847 @CallSuper 1848 public void onMultiWindowModeChanged(boolean multiWindowMode) { 1849 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1850 "onMultiWindowModeChanged " + this + ": " + multiWindowMode); 1851 if (mWindow != null) { 1852 mWindow.onMultiWindowModeChanged(); 1853 } 1854 } 1855 1856 /** 1857 * Returns true if the activity is currently in multi-window mode. 1858 * @see android.R.attr#resizeableActivity 1859 * 1860 * @return True if the activity is in multi-window mode. 1861 */ 1862 public boolean inMultiWindowMode() { 1863 try { 1864 return ActivityManagerNative.getDefault().inMultiWindowMode(mToken); 1865 } catch (RemoteException e) { 1866 } 1867 return false; 1868 } 1869 1870 /** 1871 * Called by the system when the activity changes to and from picture-in-picture mode. 1872 * @see android.R.attr#supportsPictureInPicture 1873 * 1874 * @param pictureInPictureMode True if the activity is in picture-in-picture mode. 1875 */ 1876 public void onPictureInPictureModeChanged(boolean pictureInPictureMode) { 1877 if (DEBUG_LIFECYCLE) Slog.v(TAG, 1878 "onPictureInPictureModeChanged " + this + ": " + pictureInPictureMode); 1879 } 1880 1881 /** 1882 * Returns true if the activity is currently in picture-in-picture mode. 1883 * @see android.R.attr#supportsPictureInPicture 1884 * 1885 * @return True if the activity is in picture-in-picture mode. 1886 */ 1887 public boolean inPictureInPictureMode() { 1888 try { 1889 return ActivityManagerNative.getDefault().inPictureInPictureMode(mToken); 1890 } catch (RemoteException e) { 1891 } 1892 return false; 1893 } 1894 1895 /** 1896 * Puts the activity in picture-in-picture mode. 1897 * @see android.R.attr#supportsPictureInPicture 1898 */ 1899 public void enterPictureInPictureMode() { 1900 try { 1901 ActivityManagerNative.getDefault().enterPictureInPictureMode(mToken); 1902 } catch (RemoteException e) { 1903 } 1904 } 1905 1906 /** 1907 * Called by the system when the device configuration changes while your 1908 * activity is running. Note that this will <em>only</em> be called if 1909 * you have selected configurations you would like to handle with the 1910 * {@link android.R.attr#configChanges} attribute in your manifest. If 1911 * any configuration change occurs that is not selected to be reported 1912 * by that attribute, then instead of reporting it the system will stop 1913 * and restart the activity (to have it launched with the new 1914 * configuration). 1915 * 1916 * <p>At the time that this function has been called, your Resources 1917 * object will have been updated to return resource values matching the 1918 * new configuration. 1919 * 1920 * @param newConfig The new device configuration. 1921 */ 1922 public void onConfigurationChanged(Configuration newConfig) { 1923 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1924 mCalled = true; 1925 1926 mFragments.dispatchConfigurationChanged(newConfig); 1927 1928 if (mWindow != null) { 1929 // Pass the configuration changed event to the window 1930 mWindow.onConfigurationChanged(newConfig); 1931 } 1932 1933 if (mActionBar != null) { 1934 // Do this last; the action bar will need to access 1935 // view changes from above. 1936 mActionBar.onConfigurationChanged(newConfig); 1937 } 1938 } 1939 1940 /** 1941 * If this activity is being destroyed because it can not handle a 1942 * configuration parameter being changed (and thus its 1943 * {@link #onConfigurationChanged(Configuration)} method is 1944 * <em>not</em> being called), then you can use this method to discover 1945 * the set of changes that have occurred while in the process of being 1946 * destroyed. Note that there is no guarantee that these will be 1947 * accurate (other changes could have happened at any time), so you should 1948 * only use this as an optimization hint. 1949 * 1950 * @return Returns a bit field of the configuration parameters that are 1951 * changing, as defined by the {@link android.content.res.Configuration} 1952 * class. 1953 */ 1954 public int getChangingConfigurations() { 1955 return mConfigChangeFlags; 1956 } 1957 1958 /** 1959 * Retrieve the non-configuration instance data that was previously 1960 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1961 * be available from the initial {@link #onCreate} and 1962 * {@link #onStart} calls to the new instance, allowing you to extract 1963 * any useful dynamic state from the previous instance. 1964 * 1965 * <p>Note that the data you retrieve here should <em>only</em> be used 1966 * as an optimization for handling configuration changes. You should always 1967 * be able to handle getting a null pointer back, and an activity must 1968 * still be able to restore itself to its previous state (through the 1969 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1970 * function returns null. 1971 * 1972 * @return Returns the object previously returned by 1973 * {@link #onRetainNonConfigurationInstance()}. 1974 * 1975 * @deprecated Use the new {@link Fragment} API 1976 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1977 * available on older platforms through the Android compatibility package. 1978 */ 1979 @Nullable 1980 @Deprecated 1981 public Object getLastNonConfigurationInstance() { 1982 return mLastNonConfigurationInstances != null 1983 ? mLastNonConfigurationInstances.activity : null; 1984 } 1985 1986 /** 1987 * Called by the system, as part of destroying an 1988 * activity due to a configuration change, when it is known that a new 1989 * instance will immediately be created for the new configuration. You 1990 * can return any object you like here, including the activity instance 1991 * itself, which can later be retrieved by calling 1992 * {@link #getLastNonConfigurationInstance()} in the new activity 1993 * instance. 1994 * 1995 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1996 * or later, consider instead using a {@link Fragment} with 1997 * {@link Fragment#setRetainInstance(boolean) 1998 * Fragment.setRetainInstance(boolean}.</em> 1999 * 2000 * <p>This function is called purely as an optimization, and you must 2001 * not rely on it being called. When it is called, a number of guarantees 2002 * will be made to help optimize configuration switching: 2003 * <ul> 2004 * <li> The function will be called between {@link #onStop} and 2005 * {@link #onDestroy}. 2006 * <li> A new instance of the activity will <em>always</em> be immediately 2007 * created after this one's {@link #onDestroy()} is called. In particular, 2008 * <em>no</em> messages will be dispatched during this time (when the returned 2009 * object does not have an activity to be associated with). 2010 * <li> The object you return here will <em>always</em> be available from 2011 * the {@link #getLastNonConfigurationInstance()} method of the following 2012 * activity instance as described there. 2013 * </ul> 2014 * 2015 * <p>These guarantees are designed so that an activity can use this API 2016 * to propagate extensive state from the old to new activity instance, from 2017 * loaded bitmaps, to network connections, to evenly actively running 2018 * threads. Note that you should <em>not</em> propagate any data that 2019 * may change based on the configuration, including any data loaded from 2020 * resources such as strings, layouts, or drawables. 2021 * 2022 * <p>The guarantee of no message handling during the switch to the next 2023 * activity simplifies use with active objects. For example if your retained 2024 * state is an {@link android.os.AsyncTask} you are guaranteed that its 2025 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 2026 * not be called from the call here until you execute the next instance's 2027 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 2028 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 2029 * running in a separate thread.) 2030 * 2031 * @return Return any Object holding the desired state to propagate to the 2032 * next activity instance. 2033 * 2034 * @deprecated Use the new {@link Fragment} API 2035 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 2036 * available on older platforms through the Android compatibility package. 2037 */ 2038 public Object onRetainNonConfigurationInstance() { 2039 return null; 2040 } 2041 2042 /** 2043 * Retrieve the non-configuration instance data that was previously 2044 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 2045 * be available from the initial {@link #onCreate} and 2046 * {@link #onStart} calls to the new instance, allowing you to extract 2047 * any useful dynamic state from the previous instance. 2048 * 2049 * <p>Note that the data you retrieve here should <em>only</em> be used 2050 * as an optimization for handling configuration changes. You should always 2051 * be able to handle getting a null pointer back, and an activity must 2052 * still be able to restore itself to its previous state (through the 2053 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 2054 * function returns null. 2055 * 2056 * @return Returns the object previously returned by 2057 * {@link #onRetainNonConfigurationChildInstances()} 2058 */ 2059 @Nullable 2060 HashMap<String, Object> getLastNonConfigurationChildInstances() { 2061 return mLastNonConfigurationInstances != null 2062 ? mLastNonConfigurationInstances.children : null; 2063 } 2064 2065 /** 2066 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 2067 * it should return either a mapping from child activity id strings to arbitrary objects, 2068 * or null. This method is intended to be used by Activity framework subclasses that control a 2069 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 2070 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 2071 */ 2072 @Nullable 2073 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 2074 return null; 2075 } 2076 2077 NonConfigurationInstances retainNonConfigurationInstances() { 2078 Object activity = onRetainNonConfigurationInstance(); 2079 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 2080 List<Fragment> fragments = mFragments.retainNonConfig(); 2081 ArrayMap<String, LoaderManager> loaders = mFragments.retainLoaderNonConfig(); 2082 if (activity == null && children == null && fragments == null && loaders == null 2083 && mVoiceInteractor == null) { 2084 return null; 2085 } 2086 2087 NonConfigurationInstances nci = new NonConfigurationInstances(); 2088 nci.activity = activity; 2089 nci.children = children; 2090 nci.fragments = fragments; 2091 nci.loaders = loaders; 2092 if (mVoiceInteractor != null) { 2093 mVoiceInteractor.retainInstance(); 2094 nci.voiceInteractor = mVoiceInteractor; 2095 } 2096 return nci; 2097 } 2098 2099 public void onLowMemory() { 2100 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 2101 mCalled = true; 2102 mFragments.dispatchLowMemory(); 2103 } 2104 2105 public void onTrimMemory(int level) { 2106 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 2107 mCalled = true; 2108 mFragments.dispatchTrimMemory(level); 2109 } 2110 2111 /** 2112 * Return the FragmentManager for interacting with fragments associated 2113 * with this activity. 2114 */ 2115 public FragmentManager getFragmentManager() { 2116 return mFragments.getFragmentManager(); 2117 } 2118 2119 /** 2120 * Called when a Fragment is being attached to this activity, immediately 2121 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 2122 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 2123 */ 2124 public void onAttachFragment(Fragment fragment) { 2125 } 2126 2127 /** 2128 * Wrapper around 2129 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2130 * that gives the resulting {@link Cursor} to call 2131 * {@link #startManagingCursor} so that the activity will manage its 2132 * lifecycle for you. 2133 * 2134 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2135 * or later, consider instead using {@link LoaderManager} instead, available 2136 * via {@link #getLoaderManager()}.</em> 2137 * 2138 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2139 * this method, because the activity will do that for you at the appropriate time. However, if 2140 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2141 * not</em> automatically close the cursor and, in that case, you must call 2142 * {@link Cursor#close()}.</p> 2143 * 2144 * @param uri The URI of the content provider to query. 2145 * @param projection List of columns to return. 2146 * @param selection SQL WHERE clause. 2147 * @param sortOrder SQL ORDER BY clause. 2148 * 2149 * @return The Cursor that was returned by query(). 2150 * 2151 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2152 * @see #startManagingCursor 2153 * @hide 2154 * 2155 * @deprecated Use {@link CursorLoader} instead. 2156 */ 2157 @Deprecated 2158 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2159 String sortOrder) { 2160 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 2161 if (c != null) { 2162 startManagingCursor(c); 2163 } 2164 return c; 2165 } 2166 2167 /** 2168 * Wrapper around 2169 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 2170 * that gives the resulting {@link Cursor} to call 2171 * {@link #startManagingCursor} so that the activity will manage its 2172 * lifecycle for you. 2173 * 2174 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2175 * or later, consider instead using {@link LoaderManager} instead, available 2176 * via {@link #getLoaderManager()}.</em> 2177 * 2178 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 2179 * this method, because the activity will do that for you at the appropriate time. However, if 2180 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 2181 * not</em> automatically close the cursor and, in that case, you must call 2182 * {@link Cursor#close()}.</p> 2183 * 2184 * @param uri The URI of the content provider to query. 2185 * @param projection List of columns to return. 2186 * @param selection SQL WHERE clause. 2187 * @param selectionArgs The arguments to selection, if any ?s are pesent 2188 * @param sortOrder SQL ORDER BY clause. 2189 * 2190 * @return The Cursor that was returned by query(). 2191 * 2192 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 2193 * @see #startManagingCursor 2194 * 2195 * @deprecated Use {@link CursorLoader} instead. 2196 */ 2197 @Deprecated 2198 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 2199 String[] selectionArgs, String sortOrder) { 2200 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 2201 if (c != null) { 2202 startManagingCursor(c); 2203 } 2204 return c; 2205 } 2206 2207 /** 2208 * This method allows the activity to take care of managing the given 2209 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 2210 * That is, when the activity is stopped it will automatically call 2211 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 2212 * it will call {@link Cursor#requery} for you. When the activity is 2213 * destroyed, all managed Cursors will be closed automatically. 2214 * 2215 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2216 * or later, consider instead using {@link LoaderManager} instead, available 2217 * via {@link #getLoaderManager()}.</em> 2218 * 2219 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 2220 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 2221 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2222 * <em>will not</em> automatically close the cursor and, in that case, you must call 2223 * {@link Cursor#close()}.</p> 2224 * 2225 * @param c The Cursor to be managed. 2226 * 2227 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2228 * @see #stopManagingCursor 2229 * 2230 * @deprecated Use the new {@link android.content.CursorLoader} class with 2231 * {@link LoaderManager} instead; this is also 2232 * available on older platforms through the Android compatibility package. 2233 */ 2234 @Deprecated 2235 public void startManagingCursor(Cursor c) { 2236 synchronized (mManagedCursors) { 2237 mManagedCursors.add(new ManagedCursor(c)); 2238 } 2239 } 2240 2241 /** 2242 * Given a Cursor that was previously given to 2243 * {@link #startManagingCursor}, stop the activity's management of that 2244 * cursor. 2245 * 2246 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2247 * the system <em>will not</em> automatically close the cursor and you must call 2248 * {@link Cursor#close()}.</p> 2249 * 2250 * @param c The Cursor that was being managed. 2251 * 2252 * @see #startManagingCursor 2253 * 2254 * @deprecated Use the new {@link android.content.CursorLoader} class with 2255 * {@link LoaderManager} instead; this is also 2256 * available on older platforms through the Android compatibility package. 2257 */ 2258 @Deprecated 2259 public void stopManagingCursor(Cursor c) { 2260 synchronized (mManagedCursors) { 2261 final int N = mManagedCursors.size(); 2262 for (int i=0; i<N; i++) { 2263 ManagedCursor mc = mManagedCursors.get(i); 2264 if (mc.mCursor == c) { 2265 mManagedCursors.remove(i); 2266 break; 2267 } 2268 } 2269 } 2270 } 2271 2272 /** 2273 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2274 * this is a no-op. 2275 * @hide 2276 */ 2277 @Deprecated 2278 public void setPersistent(boolean isPersistent) { 2279 } 2280 2281 /** 2282 * Finds a view that was identified by the id attribute from the XML that 2283 * was processed in {@link #onCreate}. 2284 * 2285 * @return The view if found or null otherwise. 2286 */ 2287 @Nullable 2288 public View findViewById(@IdRes int id) { 2289 return getWindow().findViewById(id); 2290 } 2291 2292 /** 2293 * Retrieve a reference to this activity's ActionBar. 2294 * 2295 * @return The Activity's ActionBar, or null if it does not have one. 2296 */ 2297 @Nullable 2298 public ActionBar getActionBar() { 2299 initWindowDecorActionBar(); 2300 return mActionBar; 2301 } 2302 2303 /** 2304 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2305 * Activity window. 2306 * 2307 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2308 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2309 * a traditional window decor action bar. The toolbar's menu will be populated with the 2310 * Activity's options menu and the navigation button will be wired through the standard 2311 * {@link android.R.id#home home} menu select action.</p> 2312 * 2313 * <p>In order to use a Toolbar within the Activity's window content the application 2314 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2315 * 2316 * @param toolbar Toolbar to set as the Activity's action bar 2317 */ 2318 public void setActionBar(@Nullable Toolbar toolbar) { 2319 final ActionBar ab = getActionBar(); 2320 if (ab instanceof WindowDecorActionBar) { 2321 throw new IllegalStateException("This Activity already has an action bar supplied " + 2322 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2323 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2324 } 2325 2326 // If we reach here then we're setting a new action bar 2327 // First clear out the MenuInflater to make sure that it is valid for the new Action Bar 2328 mMenuInflater = null; 2329 2330 // If we have an action bar currently, destroy it 2331 if (ab != null) { 2332 ab.onDestroy(); 2333 } 2334 2335 ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2336 mActionBar = tbab; 2337 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2338 mActionBar.invalidateOptionsMenu(); 2339 } 2340 2341 /** 2342 * Creates a new ActionBar, locates the inflated ActionBarView, 2343 * initializes the ActionBar with the view, and sets mActionBar. 2344 */ 2345 private void initWindowDecorActionBar() { 2346 Window window = getWindow(); 2347 2348 // Initializing the window decor can change window feature flags. 2349 // Make sure that we have the correct set before performing the test below. 2350 window.getDecorView(); 2351 2352 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2353 return; 2354 } 2355 2356 mActionBar = new WindowDecorActionBar(this); 2357 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2358 2359 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2360 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2361 } 2362 2363 /** 2364 * Set the activity content from a layout resource. The resource will be 2365 * inflated, adding all top-level views to the activity. 2366 * 2367 * @param layoutResID Resource ID to be inflated. 2368 * 2369 * @see #setContentView(android.view.View) 2370 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2371 */ 2372 public void setContentView(@LayoutRes int layoutResID) { 2373 getWindow().setContentView(layoutResID); 2374 initWindowDecorActionBar(); 2375 } 2376 2377 /** 2378 * Set the activity content to an explicit view. This view is placed 2379 * directly into the activity's view hierarchy. It can itself be a complex 2380 * view hierarchy. When calling this method, the layout parameters of the 2381 * specified view are ignored. Both the width and the height of the view are 2382 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2383 * your own layout parameters, invoke 2384 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2385 * instead. 2386 * 2387 * @param view The desired content to display. 2388 * 2389 * @see #setContentView(int) 2390 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2391 */ 2392 public void setContentView(View view) { 2393 getWindow().setContentView(view); 2394 initWindowDecorActionBar(); 2395 } 2396 2397 /** 2398 * Set the activity content to an explicit view. This view is placed 2399 * directly into the activity's view hierarchy. It can itself be a complex 2400 * view hierarchy. 2401 * 2402 * @param view The desired content to display. 2403 * @param params Layout parameters for the view. 2404 * 2405 * @see #setContentView(android.view.View) 2406 * @see #setContentView(int) 2407 */ 2408 public void setContentView(View view, ViewGroup.LayoutParams params) { 2409 getWindow().setContentView(view, params); 2410 initWindowDecorActionBar(); 2411 } 2412 2413 /** 2414 * Add an additional content view to the activity. Added after any existing 2415 * ones in the activity -- existing views are NOT removed. 2416 * 2417 * @param view The desired content to display. 2418 * @param params Layout parameters for the view. 2419 */ 2420 public void addContentView(View view, ViewGroup.LayoutParams params) { 2421 getWindow().addContentView(view, params); 2422 initWindowDecorActionBar(); 2423 } 2424 2425 /** 2426 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2427 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2428 * 2429 * <p>This method will return non-null after content has been initialized (e.g. by using 2430 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2431 * 2432 * @return This window's content TransitionManager or null if none is set. 2433 */ 2434 public TransitionManager getContentTransitionManager() { 2435 return getWindow().getTransitionManager(); 2436 } 2437 2438 /** 2439 * Set the {@link TransitionManager} to use for default transitions in this window. 2440 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2441 * 2442 * @param tm The TransitionManager to use for scene changes. 2443 */ 2444 public void setContentTransitionManager(TransitionManager tm) { 2445 getWindow().setTransitionManager(tm); 2446 } 2447 2448 /** 2449 * Retrieve the {@link Scene} representing this window's current content. 2450 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2451 * 2452 * <p>This method will return null if the current content is not represented by a Scene.</p> 2453 * 2454 * @return Current Scene being shown or null 2455 */ 2456 public Scene getContentScene() { 2457 return getWindow().getContentScene(); 2458 } 2459 2460 /** 2461 * Sets whether this activity is finished when touched outside its window's 2462 * bounds. 2463 */ 2464 public void setFinishOnTouchOutside(boolean finish) { 2465 mWindow.setCloseOnTouchOutside(finish); 2466 } 2467 2468 /** @hide */ 2469 @IntDef({ 2470 DEFAULT_KEYS_DISABLE, 2471 DEFAULT_KEYS_DIALER, 2472 DEFAULT_KEYS_SHORTCUT, 2473 DEFAULT_KEYS_SEARCH_LOCAL, 2474 DEFAULT_KEYS_SEARCH_GLOBAL}) 2475 @Retention(RetentionPolicy.SOURCE) 2476 @interface DefaultKeyMode {} 2477 2478 /** 2479 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2480 * keys. 2481 * 2482 * @see #setDefaultKeyMode 2483 */ 2484 static public final int DEFAULT_KEYS_DISABLE = 0; 2485 /** 2486 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2487 * key handling. 2488 * 2489 * @see #setDefaultKeyMode 2490 */ 2491 static public final int DEFAULT_KEYS_DIALER = 1; 2492 /** 2493 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2494 * default key handling. 2495 * 2496 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2497 * 2498 * @see #setDefaultKeyMode 2499 */ 2500 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2501 /** 2502 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2503 * will start an application-defined search. (If the application or activity does not 2504 * actually define a search, the the keys will be ignored.) 2505 * 2506 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2507 * 2508 * @see #setDefaultKeyMode 2509 */ 2510 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2511 2512 /** 2513 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2514 * will start a global search (typically web search, but some platforms may define alternate 2515 * methods for global search) 2516 * 2517 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2518 * 2519 * @see #setDefaultKeyMode 2520 */ 2521 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2522 2523 /** 2524 * Select the default key handling for this activity. This controls what 2525 * will happen to key events that are not otherwise handled. The default 2526 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2527 * floor. Other modes allow you to launch the dialer 2528 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2529 * menu without requiring the menu key be held down 2530 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2531 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2532 * 2533 * <p>Note that the mode selected here does not impact the default 2534 * handling of system keys, such as the "back" and "menu" keys, and your 2535 * activity and its views always get a first chance to receive and handle 2536 * all application keys. 2537 * 2538 * @param mode The desired default key mode constant. 2539 * 2540 * @see #DEFAULT_KEYS_DISABLE 2541 * @see #DEFAULT_KEYS_DIALER 2542 * @see #DEFAULT_KEYS_SHORTCUT 2543 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2544 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2545 * @see #onKeyDown 2546 */ 2547 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2548 mDefaultKeyMode = mode; 2549 2550 // Some modes use a SpannableStringBuilder to track & dispatch input events 2551 // This list must remain in sync with the switch in onKeyDown() 2552 switch (mode) { 2553 case DEFAULT_KEYS_DISABLE: 2554 case DEFAULT_KEYS_SHORTCUT: 2555 mDefaultKeySsb = null; // not used in these modes 2556 break; 2557 case DEFAULT_KEYS_DIALER: 2558 case DEFAULT_KEYS_SEARCH_LOCAL: 2559 case DEFAULT_KEYS_SEARCH_GLOBAL: 2560 mDefaultKeySsb = new SpannableStringBuilder(); 2561 Selection.setSelection(mDefaultKeySsb,0); 2562 break; 2563 default: 2564 throw new IllegalArgumentException(); 2565 } 2566 } 2567 2568 /** 2569 * Called when a key was pressed down and not handled by any of the views 2570 * inside of the activity. So, for example, key presses while the cursor 2571 * is inside a TextView will not trigger the event (unless it is a navigation 2572 * to another object) because TextView handles its own key presses. 2573 * 2574 * <p>If the focused view didn't want this event, this method is called. 2575 * 2576 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2577 * by calling {@link #onBackPressed()}, though the behavior varies based 2578 * on the application compatibility mode: for 2579 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2580 * it will set up the dispatch to call {@link #onKeyUp} where the action 2581 * will be performed; for earlier applications, it will perform the 2582 * action immediately in on-down, as those versions of the platform 2583 * behaved. 2584 * 2585 * <p>Other additional default key handling may be performed 2586 * if configured with {@link #setDefaultKeyMode}. 2587 * 2588 * @return Return <code>true</code> to prevent this event from being propagated 2589 * further, or <code>false</code> to indicate that you have not handled 2590 * this event and it should continue to be propagated. 2591 * @see #onKeyUp 2592 * @see android.view.KeyEvent 2593 */ 2594 public boolean onKeyDown(int keyCode, KeyEvent event) { 2595 if (keyCode == KeyEvent.KEYCODE_BACK) { 2596 if (getApplicationInfo().targetSdkVersion 2597 >= Build.VERSION_CODES.ECLAIR) { 2598 event.startTracking(); 2599 } else { 2600 onBackPressed(); 2601 } 2602 return true; 2603 } 2604 2605 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2606 return false; 2607 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2608 Window w = getWindow(); 2609 if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 2610 w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, 2611 Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2612 return true; 2613 } 2614 return false; 2615 } else { 2616 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2617 boolean clearSpannable = false; 2618 boolean handled; 2619 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2620 clearSpannable = true; 2621 handled = false; 2622 } else { 2623 handled = TextKeyListener.getInstance().onKeyDown( 2624 null, mDefaultKeySsb, keyCode, event); 2625 if (handled && mDefaultKeySsb.length() > 0) { 2626 // something useable has been typed - dispatch it now. 2627 2628 final String str = mDefaultKeySsb.toString(); 2629 clearSpannable = true; 2630 2631 switch (mDefaultKeyMode) { 2632 case DEFAULT_KEYS_DIALER: 2633 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2634 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2635 startActivity(intent); 2636 break; 2637 case DEFAULT_KEYS_SEARCH_LOCAL: 2638 startSearch(str, false, null, false); 2639 break; 2640 case DEFAULT_KEYS_SEARCH_GLOBAL: 2641 startSearch(str, false, null, true); 2642 break; 2643 } 2644 } 2645 } 2646 if (clearSpannable) { 2647 mDefaultKeySsb.clear(); 2648 mDefaultKeySsb.clearSpans(); 2649 Selection.setSelection(mDefaultKeySsb,0); 2650 } 2651 return handled; 2652 } 2653 } 2654 2655 /** 2656 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2657 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2658 * the event). 2659 */ 2660 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2661 return false; 2662 } 2663 2664 /** 2665 * Called when a key was released and not handled by any of the views 2666 * inside of the activity. So, for example, key presses while the cursor 2667 * is inside a TextView will not trigger the event (unless it is a navigation 2668 * to another object) because TextView handles its own key presses. 2669 * 2670 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2671 * and go back. 2672 * 2673 * @return Return <code>true</code> to prevent this event from being propagated 2674 * further, or <code>false</code> to indicate that you have not handled 2675 * this event and it should continue to be propagated. 2676 * @see #onKeyDown 2677 * @see KeyEvent 2678 */ 2679 public boolean onKeyUp(int keyCode, KeyEvent event) { 2680 if (getApplicationInfo().targetSdkVersion 2681 >= Build.VERSION_CODES.ECLAIR) { 2682 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2683 && !event.isCanceled()) { 2684 onBackPressed(); 2685 return true; 2686 } 2687 } 2688 return false; 2689 } 2690 2691 /** 2692 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2693 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2694 * the event). 2695 */ 2696 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2697 return false; 2698 } 2699 2700 /** 2701 * Called when the activity has detected the user's press of the back 2702 * key. The default implementation simply finishes the current activity, 2703 * but you can override this to do whatever you want. 2704 */ 2705 public void onBackPressed() { 2706 if (mActionBar != null && mActionBar.collapseActionView()) { 2707 return; 2708 } 2709 2710 if (!mFragments.getFragmentManager().popBackStackImmediate()) { 2711 finishAfterTransition(); 2712 } 2713 } 2714 2715 /** 2716 * Called when a key shortcut event is not handled by any of the views in the Activity. 2717 * Override this method to implement global key shortcuts for the Activity. 2718 * Key shortcuts can also be implemented by setting the 2719 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2720 * 2721 * @param keyCode The value in event.getKeyCode(). 2722 * @param event Description of the key event. 2723 * @return True if the key shortcut was handled. 2724 */ 2725 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2726 // Let the Action Bar have a chance at handling the shortcut. 2727 ActionBar actionBar = getActionBar(); 2728 return (actionBar != null && actionBar.onKeyShortcut(keyCode, event)); 2729 } 2730 2731 /** 2732 * Called when a touch screen event was not handled by any of the views 2733 * under it. This is most useful to process touch events that happen 2734 * outside of your window bounds, where there is no view to receive it. 2735 * 2736 * @param event The touch screen event being processed. 2737 * 2738 * @return Return true if you have consumed the event, false if you haven't. 2739 * The default implementation always returns false. 2740 */ 2741 public boolean onTouchEvent(MotionEvent event) { 2742 if (mWindow.shouldCloseOnTouch(this, event)) { 2743 finish(); 2744 return true; 2745 } 2746 2747 return false; 2748 } 2749 2750 /** 2751 * Called when the trackball was moved and not handled by any of the 2752 * views inside of the activity. So, for example, if the trackball moves 2753 * while focus is on a button, you will receive a call here because 2754 * buttons do not normally do anything with trackball events. The call 2755 * here happens <em>before</em> trackball movements are converted to 2756 * DPAD key events, which then get sent back to the view hierarchy, and 2757 * will be processed at the point for things like focus navigation. 2758 * 2759 * @param event The trackball event being processed. 2760 * 2761 * @return Return true if you have consumed the event, false if you haven't. 2762 * The default implementation always returns false. 2763 */ 2764 public boolean onTrackballEvent(MotionEvent event) { 2765 return false; 2766 } 2767 2768 /** 2769 * Called when a generic motion event was not handled by any of the 2770 * views inside of the activity. 2771 * <p> 2772 * Generic motion events describe joystick movements, mouse hovers, track pad 2773 * touches, scroll wheel movements and other input events. The 2774 * {@link MotionEvent#getSource() source} of the motion event specifies 2775 * the class of input that was received. Implementations of this method 2776 * must examine the bits in the source before processing the event. 2777 * The following code example shows how this is done. 2778 * </p><p> 2779 * Generic motion events with source class 2780 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2781 * are delivered to the view under the pointer. All other generic motion events are 2782 * delivered to the focused view. 2783 * </p><p> 2784 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2785 * handle this event. 2786 * </p> 2787 * 2788 * @param event The generic motion event being processed. 2789 * 2790 * @return Return true if you have consumed the event, false if you haven't. 2791 * The default implementation always returns false. 2792 */ 2793 public boolean onGenericMotionEvent(MotionEvent event) { 2794 return false; 2795 } 2796 2797 /** 2798 * Called whenever a key, touch, or trackball event is dispatched to the 2799 * activity. Implement this method if you wish to know that the user has 2800 * interacted with the device in some way while your activity is running. 2801 * This callback and {@link #onUserLeaveHint} are intended to help 2802 * activities manage status bar notifications intelligently; specifically, 2803 * for helping activities determine the proper time to cancel a notfication. 2804 * 2805 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2806 * be accompanied by calls to {@link #onUserInteraction}. This 2807 * ensures that your activity will be told of relevant user activity such 2808 * as pulling down the notification pane and touching an item there. 2809 * 2810 * <p>Note that this callback will be invoked for the touch down action 2811 * that begins a touch gesture, but may not be invoked for the touch-moved 2812 * and touch-up actions that follow. 2813 * 2814 * @see #onUserLeaveHint() 2815 */ 2816 public void onUserInteraction() { 2817 } 2818 2819 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2820 // Update window manager if: we have a view, that view is 2821 // attached to its parent (which will be a RootView), and 2822 // this activity is not embedded. 2823 if (mParent == null) { 2824 View decor = mDecor; 2825 if (decor != null && decor.getParent() != null) { 2826 getWindowManager().updateViewLayout(decor, params); 2827 } 2828 } 2829 } 2830 2831 public void onContentChanged() { 2832 } 2833 2834 /** 2835 * Called when the current {@link Window} of the activity gains or loses 2836 * focus. This is the best indicator of whether this activity is visible 2837 * to the user. The default implementation clears the key tracking 2838 * state, so should always be called. 2839 * 2840 * <p>Note that this provides information about global focus state, which 2841 * is managed independently of activity lifecycles. As such, while focus 2842 * changes will generally have some relation to lifecycle changes (an 2843 * activity that is stopped will not generally get window focus), you 2844 * should not rely on any particular order between the callbacks here and 2845 * those in the other lifecycle methods such as {@link #onResume}. 2846 * 2847 * <p>As a general rule, however, a resumed activity will have window 2848 * focus... unless it has displayed other dialogs or popups that take 2849 * input focus, in which case the activity itself will not have focus 2850 * when the other windows have it. Likewise, the system may display 2851 * system-level windows (such as the status bar notification panel or 2852 * a system alert) which will temporarily take window input focus without 2853 * pausing the foreground activity. 2854 * 2855 * @param hasFocus Whether the window of this activity has focus. 2856 * 2857 * @see #hasWindowFocus() 2858 * @see #onResume 2859 * @see View#onWindowFocusChanged(boolean) 2860 */ 2861 public void onWindowFocusChanged(boolean hasFocus) { 2862 } 2863 2864 /** 2865 * Called when the main window associated with the activity has been 2866 * attached to the window manager. 2867 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2868 * for more information. 2869 * @see View#onAttachedToWindow 2870 */ 2871 public void onAttachedToWindow() { 2872 } 2873 2874 /** 2875 * Called when the main window associated with the activity has been 2876 * detached from the window manager. 2877 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2878 * for more information. 2879 * @see View#onDetachedFromWindow 2880 */ 2881 public void onDetachedFromWindow() { 2882 } 2883 2884 /** 2885 * Returns true if this activity's <em>main</em> window currently has window focus. 2886 * Note that this is not the same as the view itself having focus. 2887 * 2888 * @return True if this activity's main window currently has window focus. 2889 * 2890 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2891 */ 2892 public boolean hasWindowFocus() { 2893 Window w = getWindow(); 2894 if (w != null) { 2895 View d = w.getDecorView(); 2896 if (d != null) { 2897 return d.hasWindowFocus(); 2898 } 2899 } 2900 return false; 2901 } 2902 2903 /** 2904 * Called when the main window associated with the activity has been dismissed. 2905 * @hide 2906 */ 2907 @Override 2908 public void onWindowDismissed(boolean finishTask) { 2909 finish(finishTask ? FINISH_TASK_WITH_ACTIVITY : DONT_FINISH_TASK_WITH_ACTIVITY); 2910 } 2911 2912 2913 /** 2914 * Moves the activity from 2915 * {@link android.app.ActivityManager.StackId#FREEFORM_WORKSPACE_STACK_ID} to 2916 * {@link android.app.ActivityManager.StackId#FULLSCREEN_WORKSPACE_STACK_ID} stack. 2917 * 2918 * @hide 2919 */ 2920 @Override 2921 public void exitFreeformMode() throws RemoteException { 2922 ActivityManagerNative.getDefault().exitFreeformMode(mToken); 2923 } 2924 2925 /** Returns the current stack Id for the window. 2926 * @hide 2927 */ 2928 @Override 2929 public int getWindowStackId() throws RemoteException { 2930 return ActivityManagerNative.getDefault().getActivityStackId(mToken); 2931 } 2932 2933 /** 2934 * Called to process key events. You can override this to intercept all 2935 * key events before they are dispatched to the window. Be sure to call 2936 * this implementation for key events that should be handled normally. 2937 * 2938 * @param event The key event. 2939 * 2940 * @return boolean Return true if this event was consumed. 2941 */ 2942 public boolean dispatchKeyEvent(KeyEvent event) { 2943 onUserInteraction(); 2944 2945 // Let action bars open menus in response to the menu key prioritized over 2946 // the window handling it 2947 final int keyCode = event.getKeyCode(); 2948 if (keyCode == KeyEvent.KEYCODE_MENU && 2949 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2950 return true; 2951 } else if (event.isCtrlPressed() && 2952 event.getUnicodeChar(event.getMetaState() & ~KeyEvent.META_CTRL_MASK) == '<') { 2953 // Capture the Control-< and send focus to the ActionBar 2954 final int action = event.getAction(); 2955 if (action == KeyEvent.ACTION_DOWN) { 2956 final ActionBar actionBar = getActionBar(); 2957 if (actionBar != null && actionBar.isShowing() && actionBar.requestFocus()) { 2958 mEatKeyUpEvent = true; 2959 return true; 2960 } 2961 } else if (action == KeyEvent.ACTION_UP && mEatKeyUpEvent) { 2962 mEatKeyUpEvent = false; 2963 return true; 2964 } 2965 } 2966 2967 Window win = getWindow(); 2968 if (win.superDispatchKeyEvent(event)) { 2969 return true; 2970 } 2971 View decor = mDecor; 2972 if (decor == null) decor = win.getDecorView(); 2973 return event.dispatch(this, decor != null 2974 ? decor.getKeyDispatcherState() : null, this); 2975 } 2976 2977 /** 2978 * Called to process a key shortcut event. 2979 * You can override this to intercept all key shortcut events before they are 2980 * dispatched to the window. Be sure to call this implementation for key shortcut 2981 * events that should be handled normally. 2982 * 2983 * @param event The key shortcut event. 2984 * @return True if this event was consumed. 2985 */ 2986 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2987 onUserInteraction(); 2988 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2989 return true; 2990 } 2991 return onKeyShortcut(event.getKeyCode(), event); 2992 } 2993 2994 /** 2995 * Called to process touch screen events. You can override this to 2996 * intercept all touch screen events before they are dispatched to the 2997 * window. Be sure to call this implementation for touch screen events 2998 * that should be handled normally. 2999 * 3000 * @param ev The touch screen event. 3001 * 3002 * @return boolean Return true if this event was consumed. 3003 */ 3004 public boolean dispatchTouchEvent(MotionEvent ev) { 3005 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3006 onUserInteraction(); 3007 } 3008 if (getWindow().superDispatchTouchEvent(ev)) { 3009 return true; 3010 } 3011 return onTouchEvent(ev); 3012 } 3013 3014 /** 3015 * Called to process trackball events. You can override this to 3016 * intercept all trackball events before they are dispatched to the 3017 * window. Be sure to call this implementation for trackball events 3018 * that should be handled normally. 3019 * 3020 * @param ev The trackball event. 3021 * 3022 * @return boolean Return true if this event was consumed. 3023 */ 3024 public boolean dispatchTrackballEvent(MotionEvent ev) { 3025 onUserInteraction(); 3026 if (getWindow().superDispatchTrackballEvent(ev)) { 3027 return true; 3028 } 3029 return onTrackballEvent(ev); 3030 } 3031 3032 /** 3033 * Called to process generic motion events. You can override this to 3034 * intercept all generic motion events before they are dispatched to the 3035 * window. Be sure to call this implementation for generic motion events 3036 * that should be handled normally. 3037 * 3038 * @param ev The generic motion event. 3039 * 3040 * @return boolean Return true if this event was consumed. 3041 */ 3042 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 3043 onUserInteraction(); 3044 if (getWindow().superDispatchGenericMotionEvent(ev)) { 3045 return true; 3046 } 3047 return onGenericMotionEvent(ev); 3048 } 3049 3050 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 3051 event.setClassName(getClass().getName()); 3052 event.setPackageName(getPackageName()); 3053 3054 LayoutParams params = getWindow().getAttributes(); 3055 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 3056 (params.height == LayoutParams.MATCH_PARENT); 3057 event.setFullScreen(isFullScreen); 3058 3059 CharSequence title = getTitle(); 3060 if (!TextUtils.isEmpty(title)) { 3061 event.getText().add(title); 3062 } 3063 3064 return true; 3065 } 3066 3067 /** 3068 * Default implementation of 3069 * {@link android.view.Window.Callback#onCreatePanelView} 3070 * for activities. This 3071 * simply returns null so that all panel sub-windows will have the default 3072 * menu behavior. 3073 */ 3074 @Nullable 3075 public View onCreatePanelView(int featureId) { 3076 return null; 3077 } 3078 3079 /** 3080 * Default implementation of 3081 * {@link android.view.Window.Callback#onCreatePanelMenu} 3082 * for activities. This calls through to the new 3083 * {@link #onCreateOptionsMenu} method for the 3084 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3085 * so that subclasses of Activity don't need to deal with feature codes. 3086 */ 3087 public boolean onCreatePanelMenu(int featureId, Menu menu) { 3088 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 3089 boolean show = onCreateOptionsMenu(menu); 3090 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 3091 return show; 3092 } 3093 return false; 3094 } 3095 3096 /** 3097 * Default implementation of 3098 * {@link android.view.Window.Callback#onPreparePanel} 3099 * for activities. This 3100 * calls through to the new {@link #onPrepareOptionsMenu} method for the 3101 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3102 * panel, so that subclasses of 3103 * Activity don't need to deal with feature codes. 3104 */ 3105 public boolean onPreparePanel(int featureId, View view, Menu menu) { 3106 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 3107 boolean goforit = onPrepareOptionsMenu(menu); 3108 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 3109 return goforit; 3110 } 3111 return true; 3112 } 3113 3114 /** 3115 * {@inheritDoc} 3116 * 3117 * @return The default implementation returns true. 3118 */ 3119 public boolean onMenuOpened(int featureId, Menu menu) { 3120 if (featureId == Window.FEATURE_ACTION_BAR) { 3121 initWindowDecorActionBar(); 3122 if (mActionBar != null) { 3123 mActionBar.dispatchMenuVisibilityChanged(true); 3124 } else { 3125 Log.e(TAG, "Tried to open action bar menu with no action bar"); 3126 } 3127 } 3128 return true; 3129 } 3130 3131 /** 3132 * Default implementation of 3133 * {@link android.view.Window.Callback#onMenuItemSelected} 3134 * for activities. This calls through to the new 3135 * {@link #onOptionsItemSelected} method for the 3136 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 3137 * panel, so that subclasses of 3138 * Activity don't need to deal with feature codes. 3139 */ 3140 public boolean onMenuItemSelected(int featureId, MenuItem item) { 3141 CharSequence titleCondensed = item.getTitleCondensed(); 3142 3143 switch (featureId) { 3144 case Window.FEATURE_OPTIONS_PANEL: 3145 // Put event logging here so it gets called even if subclass 3146 // doesn't call through to superclass's implmeentation of each 3147 // of these methods below 3148 if(titleCondensed != null) { 3149 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 3150 } 3151 if (onOptionsItemSelected(item)) { 3152 return true; 3153 } 3154 if (mFragments.dispatchOptionsItemSelected(item)) { 3155 return true; 3156 } 3157 if (item.getItemId() == android.R.id.home && mActionBar != null && 3158 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 3159 if (mParent == null) { 3160 return onNavigateUp(); 3161 } else { 3162 return mParent.onNavigateUpFromChild(this); 3163 } 3164 } 3165 return false; 3166 3167 case Window.FEATURE_CONTEXT_MENU: 3168 if(titleCondensed != null) { 3169 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 3170 } 3171 if (onContextItemSelected(item)) { 3172 return true; 3173 } 3174 return mFragments.dispatchContextItemSelected(item); 3175 3176 default: 3177 return false; 3178 } 3179 } 3180 3181 /** 3182 * Default implementation of 3183 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 3184 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 3185 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 3186 * so that subclasses of Activity don't need to deal with feature codes. 3187 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 3188 * {@link #onContextMenuClosed(Menu)} will be called. 3189 */ 3190 public void onPanelClosed(int featureId, Menu menu) { 3191 switch (featureId) { 3192 case Window.FEATURE_OPTIONS_PANEL: 3193 mFragments.dispatchOptionsMenuClosed(menu); 3194 onOptionsMenuClosed(menu); 3195 break; 3196 3197 case Window.FEATURE_CONTEXT_MENU: 3198 onContextMenuClosed(menu); 3199 break; 3200 3201 case Window.FEATURE_ACTION_BAR: 3202 initWindowDecorActionBar(); 3203 mActionBar.dispatchMenuVisibilityChanged(false); 3204 break; 3205 } 3206 } 3207 3208 /** 3209 * Declare that the options menu has changed, so should be recreated. 3210 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 3211 * time it needs to be displayed. 3212 */ 3213 public void invalidateOptionsMenu() { 3214 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3215 (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { 3216 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 3217 } 3218 } 3219 3220 /** 3221 * Initialize the contents of the Activity's standard options menu. You 3222 * should place your menu items in to <var>menu</var>. 3223 * 3224 * <p>This is only called once, the first time the options menu is 3225 * displayed. To update the menu every time it is displayed, see 3226 * {@link #onPrepareOptionsMenu}. 3227 * 3228 * <p>The default implementation populates the menu with standard system 3229 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 3230 * they will be correctly ordered with application-defined menu items. 3231 * Deriving classes should always call through to the base implementation. 3232 * 3233 * <p>You can safely hold on to <var>menu</var> (and any items created 3234 * from it), making modifications to it as desired, until the next 3235 * time onCreateOptionsMenu() is called. 3236 * 3237 * <p>When you add items to the menu, you can implement the Activity's 3238 * {@link #onOptionsItemSelected} method to handle them there. 3239 * 3240 * @param menu The options menu in which you place your items. 3241 * 3242 * @return You must return true for the menu to be displayed; 3243 * if you return false it will not be shown. 3244 * 3245 * @see #onPrepareOptionsMenu 3246 * @see #onOptionsItemSelected 3247 */ 3248 public boolean onCreateOptionsMenu(Menu menu) { 3249 if (mParent != null) { 3250 return mParent.onCreateOptionsMenu(menu); 3251 } 3252 return true; 3253 } 3254 3255 /** 3256 * Prepare the Screen's standard options menu to be displayed. This is 3257 * called right before the menu is shown, every time it is shown. You can 3258 * use this method to efficiently enable/disable items or otherwise 3259 * dynamically modify the contents. 3260 * 3261 * <p>The default implementation updates the system menu items based on the 3262 * activity's state. Deriving classes should always call through to the 3263 * base class implementation. 3264 * 3265 * @param menu The options menu as last shown or first initialized by 3266 * onCreateOptionsMenu(). 3267 * 3268 * @return You must return true for the menu to be displayed; 3269 * if you return false it will not be shown. 3270 * 3271 * @see #onCreateOptionsMenu 3272 */ 3273 public boolean onPrepareOptionsMenu(Menu menu) { 3274 if (mParent != null) { 3275 return mParent.onPrepareOptionsMenu(menu); 3276 } 3277 return true; 3278 } 3279 3280 /** 3281 * This hook is called whenever an item in your options menu is selected. 3282 * The default implementation simply returns false to have the normal 3283 * processing happen (calling the item's Runnable or sending a message to 3284 * its Handler as appropriate). You can use this method for any items 3285 * for which you would like to do processing without those other 3286 * facilities. 3287 * 3288 * <p>Derived classes should call through to the base class for it to 3289 * perform the default menu handling.</p> 3290 * 3291 * @param item The menu item that was selected. 3292 * 3293 * @return boolean Return false to allow normal menu processing to 3294 * proceed, true to consume it here. 3295 * 3296 * @see #onCreateOptionsMenu 3297 */ 3298 public boolean onOptionsItemSelected(MenuItem item) { 3299 if (mParent != null) { 3300 return mParent.onOptionsItemSelected(item); 3301 } 3302 return false; 3303 } 3304 3305 /** 3306 * This method is called whenever the user chooses to navigate Up within your application's 3307 * activity hierarchy from the action bar. 3308 * 3309 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3310 * was specified in the manifest for this activity or an activity-alias to it, 3311 * default Up navigation will be handled automatically. If any activity 3312 * along the parent chain requires extra Intent arguments, the Activity subclass 3313 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3314 * to supply those arguments.</p> 3315 * 3316 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3317 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3318 * from the design guide for more information about navigating within your app.</p> 3319 * 3320 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3321 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3322 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3323 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3324 * 3325 * @return true if Up navigation completed successfully and this Activity was finished, 3326 * false otherwise. 3327 */ 3328 public boolean onNavigateUp() { 3329 // Automatically handle hierarchical Up navigation if the proper 3330 // metadata is available. 3331 Intent upIntent = getParentActivityIntent(); 3332 if (upIntent != null) { 3333 if (mActivityInfo.taskAffinity == null) { 3334 // Activities with a null affinity are special; they really shouldn't 3335 // specify a parent activity intent in the first place. Just finish 3336 // the current activity and call it a day. 3337 finish(); 3338 } else if (shouldUpRecreateTask(upIntent)) { 3339 TaskStackBuilder b = TaskStackBuilder.create(this); 3340 onCreateNavigateUpTaskStack(b); 3341 onPrepareNavigateUpTaskStack(b); 3342 b.startActivities(); 3343 3344 // We can't finishAffinity if we have a result. 3345 // Fall back and simply finish the current activity instead. 3346 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3347 // Tell the developer what's going on to avoid hair-pulling. 3348 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3349 finish(); 3350 } else { 3351 finishAffinity(); 3352 } 3353 } else { 3354 navigateUpTo(upIntent); 3355 } 3356 return true; 3357 } 3358 return false; 3359 } 3360 3361 /** 3362 * This is called when a child activity of this one attempts to navigate up. 3363 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3364 * 3365 * @param child The activity making the call. 3366 */ 3367 public boolean onNavigateUpFromChild(Activity child) { 3368 return onNavigateUp(); 3369 } 3370 3371 /** 3372 * Define the synthetic task stack that will be generated during Up navigation from 3373 * a different task. 3374 * 3375 * <p>The default implementation of this method adds the parent chain of this activity 3376 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3377 * may choose to override this method to construct the desired task stack in a different 3378 * way.</p> 3379 * 3380 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3381 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3382 * returned by {@link #getParentActivityIntent()}.</p> 3383 * 3384 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3385 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3386 * 3387 * @param builder An empty TaskStackBuilder - the application should add intents representing 3388 * the desired task stack 3389 */ 3390 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3391 builder.addParentStack(this); 3392 } 3393 3394 /** 3395 * Prepare the synthetic task stack that will be generated during Up navigation 3396 * from a different task. 3397 * 3398 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3399 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3400 * If any extra data should be added to these intents before launching the new task, 3401 * the application should override this method and add that data here.</p> 3402 * 3403 * @param builder A TaskStackBuilder that has been populated with Intents by 3404 * onCreateNavigateUpTaskStack. 3405 */ 3406 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3407 } 3408 3409 /** 3410 * This hook is called whenever the options menu is being closed (either by the user canceling 3411 * the menu with the back/menu button, or when an item is selected). 3412 * 3413 * @param menu The options menu as last shown or first initialized by 3414 * onCreateOptionsMenu(). 3415 */ 3416 public void onOptionsMenuClosed(Menu menu) { 3417 if (mParent != null) { 3418 mParent.onOptionsMenuClosed(menu); 3419 } 3420 } 3421 3422 /** 3423 * Programmatically opens the options menu. If the options menu is already 3424 * open, this method does nothing. 3425 */ 3426 public void openOptionsMenu() { 3427 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && 3428 (mActionBar == null || !mActionBar.openOptionsMenu())) { 3429 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3430 } 3431 } 3432 3433 /** 3434 * Progammatically closes the options menu. If the options menu is already 3435 * closed, this method does nothing. 3436 */ 3437 public void closeOptionsMenu() { 3438 if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL)) { 3439 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3440 } 3441 } 3442 3443 /** 3444 * Called when a context menu for the {@code view} is about to be shown. 3445 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3446 * time the context menu is about to be shown and should be populated for 3447 * the view (or item inside the view for {@link AdapterView} subclasses, 3448 * this can be found in the {@code menuInfo})). 3449 * <p> 3450 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3451 * item has been selected. 3452 * <p> 3453 * It is not safe to hold onto the context menu after this method returns. 3454 * 3455 */ 3456 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3457 } 3458 3459 /** 3460 * Registers a context menu to be shown for the given view (multiple views 3461 * can show the context menu). This method will set the 3462 * {@link OnCreateContextMenuListener} on the view to this activity, so 3463 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3464 * called when it is time to show the context menu. 3465 * 3466 * @see #unregisterForContextMenu(View) 3467 * @param view The view that should show a context menu. 3468 */ 3469 public void registerForContextMenu(View view) { 3470 view.setOnCreateContextMenuListener(this); 3471 } 3472 3473 /** 3474 * Prevents a context menu to be shown for the given view. This method will remove the 3475 * {@link OnCreateContextMenuListener} on the view. 3476 * 3477 * @see #registerForContextMenu(View) 3478 * @param view The view that should stop showing a context menu. 3479 */ 3480 public void unregisterForContextMenu(View view) { 3481 view.setOnCreateContextMenuListener(null); 3482 } 3483 3484 /** 3485 * Programmatically opens the context menu for a particular {@code view}. 3486 * The {@code view} should have been added via 3487 * {@link #registerForContextMenu(View)}. 3488 * 3489 * @param view The view to show the context menu for. 3490 */ 3491 public void openContextMenu(View view) { 3492 view.showContextMenu(); 3493 } 3494 3495 /** 3496 * Programmatically closes the most recently opened context menu, if showing. 3497 */ 3498 public void closeContextMenu() { 3499 if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { 3500 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3501 } 3502 } 3503 3504 /** 3505 * This hook is called whenever an item in a context menu is selected. The 3506 * default implementation simply returns false to have the normal processing 3507 * happen (calling the item's Runnable or sending a message to its Handler 3508 * as appropriate). You can use this method for any items for which you 3509 * would like to do processing without those other facilities. 3510 * <p> 3511 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3512 * View that added this menu item. 3513 * <p> 3514 * Derived classes should call through to the base class for it to perform 3515 * the default menu handling. 3516 * 3517 * @param item The context menu item that was selected. 3518 * @return boolean Return false to allow normal context menu processing to 3519 * proceed, true to consume it here. 3520 */ 3521 public boolean onContextItemSelected(MenuItem item) { 3522 if (mParent != null) { 3523 return mParent.onContextItemSelected(item); 3524 } 3525 return false; 3526 } 3527 3528 /** 3529 * This hook is called whenever the context menu is being closed (either by 3530 * the user canceling the menu with the back/menu button, or when an item is 3531 * selected). 3532 * 3533 * @param menu The context menu that is being closed. 3534 */ 3535 public void onContextMenuClosed(Menu menu) { 3536 if (mParent != null) { 3537 mParent.onContextMenuClosed(menu); 3538 } 3539 } 3540 3541 /** 3542 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3543 */ 3544 @Deprecated 3545 protected Dialog onCreateDialog(int id) { 3546 return null; 3547 } 3548 3549 /** 3550 * Callback for creating dialogs that are managed (saved and restored) for you 3551 * by the activity. The default implementation calls through to 3552 * {@link #onCreateDialog(int)} for compatibility. 3553 * 3554 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3555 * or later, consider instead using a {@link DialogFragment} instead.</em> 3556 * 3557 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3558 * this method the first time, and hang onto it thereafter. Any dialog 3559 * that is created by this method will automatically be saved and restored 3560 * for you, including whether it is showing. 3561 * 3562 * <p>If you would like the activity to manage saving and restoring dialogs 3563 * for you, you should override this method and handle any ids that are 3564 * passed to {@link #showDialog}. 3565 * 3566 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3567 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3568 * 3569 * @param id The id of the dialog. 3570 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3571 * @return The dialog. If you return null, the dialog will not be created. 3572 * 3573 * @see #onPrepareDialog(int, Dialog, Bundle) 3574 * @see #showDialog(int, Bundle) 3575 * @see #dismissDialog(int) 3576 * @see #removeDialog(int) 3577 * 3578 * @deprecated Use the new {@link DialogFragment} class with 3579 * {@link FragmentManager} instead; this is also 3580 * available on older platforms through the Android compatibility package. 3581 */ 3582 @Nullable 3583 @Deprecated 3584 protected Dialog onCreateDialog(int id, Bundle args) { 3585 return onCreateDialog(id); 3586 } 3587 3588 /** 3589 * @deprecated Old no-arguments version of 3590 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3591 */ 3592 @Deprecated 3593 protected void onPrepareDialog(int id, Dialog dialog) { 3594 dialog.setOwnerActivity(this); 3595 } 3596 3597 /** 3598 * Provides an opportunity to prepare a managed dialog before it is being 3599 * shown. The default implementation calls through to 3600 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3601 * 3602 * <p> 3603 * Override this if you need to update a managed dialog based on the state 3604 * of the application each time it is shown. For example, a time picker 3605 * dialog might want to be updated with the current time. You should call 3606 * through to the superclass's implementation. The default implementation 3607 * will set this Activity as the owner activity on the Dialog. 3608 * 3609 * @param id The id of the managed dialog. 3610 * @param dialog The dialog. 3611 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3612 * @see #onCreateDialog(int, Bundle) 3613 * @see #showDialog(int) 3614 * @see #dismissDialog(int) 3615 * @see #removeDialog(int) 3616 * 3617 * @deprecated Use the new {@link DialogFragment} class with 3618 * {@link FragmentManager} instead; this is also 3619 * available on older platforms through the Android compatibility package. 3620 */ 3621 @Deprecated 3622 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3623 onPrepareDialog(id, dialog); 3624 } 3625 3626 /** 3627 * Simple version of {@link #showDialog(int, Bundle)} that does not 3628 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3629 * with null arguments. 3630 * 3631 * @deprecated Use the new {@link DialogFragment} class with 3632 * {@link FragmentManager} instead; this is also 3633 * available on older platforms through the Android compatibility package. 3634 */ 3635 @Deprecated 3636 public final void showDialog(int id) { 3637 showDialog(id, null); 3638 } 3639 3640 /** 3641 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3642 * will be made with the same id the first time this is called for a given 3643 * id. From thereafter, the dialog will be automatically saved and restored. 3644 * 3645 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3646 * or later, consider instead using a {@link DialogFragment} instead.</em> 3647 * 3648 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3649 * be made to provide an opportunity to do any timely preparation. 3650 * 3651 * @param id The id of the managed dialog. 3652 * @param args Arguments to pass through to the dialog. These will be saved 3653 * and restored for you. Note that if the dialog is already created, 3654 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3655 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3656 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3657 * @return Returns true if the Dialog was created; false is returned if 3658 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3659 * 3660 * @see Dialog 3661 * @see #onCreateDialog(int, Bundle) 3662 * @see #onPrepareDialog(int, Dialog, Bundle) 3663 * @see #dismissDialog(int) 3664 * @see #removeDialog(int) 3665 * 3666 * @deprecated Use the new {@link DialogFragment} class with 3667 * {@link FragmentManager} instead; this is also 3668 * available on older platforms through the Android compatibility package. 3669 */ 3670 @Nullable 3671 @Deprecated 3672 public final boolean showDialog(int id, Bundle args) { 3673 if (mManagedDialogs == null) { 3674 mManagedDialogs = new SparseArray<ManagedDialog>(); 3675 } 3676 ManagedDialog md = mManagedDialogs.get(id); 3677 if (md == null) { 3678 md = new ManagedDialog(); 3679 md.mDialog = createDialog(id, null, args); 3680 if (md.mDialog == null) { 3681 return false; 3682 } 3683 mManagedDialogs.put(id, md); 3684 } 3685 3686 md.mArgs = args; 3687 onPrepareDialog(id, md.mDialog, args); 3688 md.mDialog.show(); 3689 return true; 3690 } 3691 3692 /** 3693 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3694 * 3695 * @param id The id of the managed dialog. 3696 * 3697 * @throws IllegalArgumentException if the id was not previously shown via 3698 * {@link #showDialog(int)}. 3699 * 3700 * @see #onCreateDialog(int, Bundle) 3701 * @see #onPrepareDialog(int, Dialog, Bundle) 3702 * @see #showDialog(int) 3703 * @see #removeDialog(int) 3704 * 3705 * @deprecated Use the new {@link DialogFragment} class with 3706 * {@link FragmentManager} instead; this is also 3707 * available on older platforms through the Android compatibility package. 3708 */ 3709 @Deprecated 3710 public final void dismissDialog(int id) { 3711 if (mManagedDialogs == null) { 3712 throw missingDialog(id); 3713 } 3714 3715 final ManagedDialog md = mManagedDialogs.get(id); 3716 if (md == null) { 3717 throw missingDialog(id); 3718 } 3719 md.mDialog.dismiss(); 3720 } 3721 3722 /** 3723 * Creates an exception to throw if a user passed in a dialog id that is 3724 * unexpected. 3725 */ 3726 private IllegalArgumentException missingDialog(int id) { 3727 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3728 + "shown via Activity#showDialog"); 3729 } 3730 3731 /** 3732 * Removes any internal references to a dialog managed by this Activity. 3733 * If the dialog is showing, it will dismiss it as part of the clean up. 3734 * 3735 * <p>This can be useful if you know that you will never show a dialog again and 3736 * want to avoid the overhead of saving and restoring it in the future. 3737 * 3738 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3739 * will not throw an exception if you try to remove an ID that does not 3740 * currently have an associated dialog.</p> 3741 * 3742 * @param id The id of the managed dialog. 3743 * 3744 * @see #onCreateDialog(int, Bundle) 3745 * @see #onPrepareDialog(int, Dialog, Bundle) 3746 * @see #showDialog(int) 3747 * @see #dismissDialog(int) 3748 * 3749 * @deprecated Use the new {@link DialogFragment} class with 3750 * {@link FragmentManager} instead; this is also 3751 * available on older platforms through the Android compatibility package. 3752 */ 3753 @Deprecated 3754 public final void removeDialog(int id) { 3755 if (mManagedDialogs != null) { 3756 final ManagedDialog md = mManagedDialogs.get(id); 3757 if (md != null) { 3758 md.mDialog.dismiss(); 3759 mManagedDialogs.remove(id); 3760 } 3761 } 3762 } 3763 3764 /** 3765 * This hook is called when the user signals the desire to start a search. 3766 * 3767 * <p>You can use this function as a simple way to launch the search UI, in response to a 3768 * menu item, search button, or other widgets within your activity. Unless overidden, 3769 * calling this function is the same as calling 3770 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3771 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3772 * 3773 * <p>You can override this function to force global search, e.g. in response to a dedicated 3774 * search key, or to block search entirely (by simply returning false). 3775 * 3776 * <p>Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default 3777 * implementation changes to simply return false and you must supply your own custom 3778 * implementation if you want to support search.</p> 3779 * 3780 * @param searchEvent The {@link SearchEvent} that signaled this search. 3781 * @return Returns {@code true} if search launched, and {@code false} if the activity does 3782 * not respond to search. The default implementation always returns {@code true}, except 3783 * when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false. 3784 * 3785 * @see android.app.SearchManager 3786 */ 3787 public boolean onSearchRequested(@Nullable SearchEvent searchEvent) { 3788 mSearchEvent = searchEvent; 3789 boolean result = onSearchRequested(); 3790 mSearchEvent = null; 3791 return result; 3792 } 3793 3794 /** 3795 * @see #onSearchRequested(SearchEvent) 3796 */ 3797 public boolean onSearchRequested() { 3798 if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) 3799 != Configuration.UI_MODE_TYPE_TELEVISION) { 3800 startSearch(null, false, null, false); 3801 return true; 3802 } else { 3803 return false; 3804 } 3805 } 3806 3807 /** 3808 * During the onSearchRequested() callbacks, this function will return the 3809 * {@link SearchEvent} that triggered the callback, if it exists. 3810 * 3811 * @return SearchEvent The SearchEvent that triggered the {@link 3812 * #onSearchRequested} callback. 3813 */ 3814 public final SearchEvent getSearchEvent() { 3815 return mSearchEvent; 3816 } 3817 3818 /** 3819 * This hook is called to launch the search UI. 3820 * 3821 * <p>It is typically called from onSearchRequested(), either directly from 3822 * Activity.onSearchRequested() or from an overridden version in any given 3823 * Activity. If your goal is simply to activate search, it is preferred to call 3824 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3825 * is to inject specific data such as context data, it is preferred to <i>override</i> 3826 * onSearchRequested(), so that any callers to it will benefit from the override. 3827 * 3828 * @param initialQuery Any non-null non-empty string will be inserted as 3829 * pre-entered text in the search query box. 3830 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3831 * any further typing will replace it. This is useful for cases where an entire pre-formed 3832 * query is being inserted. If false, the selection point will be placed at the end of the 3833 * inserted query. This is useful when the inserted query is text that the user entered, 3834 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3835 * if initialQuery is a non-empty string.</i> 3836 * @param appSearchData An application can insert application-specific 3837 * context here, in order to improve quality or specificity of its own 3838 * searches. This data will be returned with SEARCH intent(s). Null if 3839 * no extra data is required. 3840 * @param globalSearch If false, this will only launch the search that has been specifically 3841 * defined by the application (which is usually defined as a local search). If no default 3842 * search is defined in the current application or activity, global search will be launched. 3843 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3844 * 3845 * @see android.app.SearchManager 3846 * @see #onSearchRequested 3847 */ 3848 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3849 @Nullable Bundle appSearchData, boolean globalSearch) { 3850 ensureSearchManager(); 3851 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3852 appSearchData, globalSearch); 3853 } 3854 3855 /** 3856 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3857 * the search dialog. Made available for testing purposes. 3858 * 3859 * @param query The query to trigger. If empty, the request will be ignored. 3860 * @param appSearchData An application can insert application-specific 3861 * context here, in order to improve quality or specificity of its own 3862 * searches. This data will be returned with SEARCH intent(s). Null if 3863 * no extra data is required. 3864 */ 3865 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3866 ensureSearchManager(); 3867 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3868 } 3869 3870 /** 3871 * Request that key events come to this activity. Use this if your 3872 * activity has no views with focus, but the activity still wants 3873 * a chance to process key events. 3874 * 3875 * @see android.view.Window#takeKeyEvents 3876 */ 3877 public void takeKeyEvents(boolean get) { 3878 getWindow().takeKeyEvents(get); 3879 } 3880 3881 /** 3882 * Enable extended window features. This is a convenience for calling 3883 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3884 * 3885 * @param featureId The desired feature as defined in 3886 * {@link android.view.Window}. 3887 * @return Returns true if the requested feature is supported and now 3888 * enabled. 3889 * 3890 * @see android.view.Window#requestFeature 3891 */ 3892 public final boolean requestWindowFeature(int featureId) { 3893 return getWindow().requestFeature(featureId); 3894 } 3895 3896 /** 3897 * Convenience for calling 3898 * {@link android.view.Window#setFeatureDrawableResource}. 3899 */ 3900 public final void setFeatureDrawableResource(int featureId, @DrawableRes int resId) { 3901 getWindow().setFeatureDrawableResource(featureId, resId); 3902 } 3903 3904 /** 3905 * Convenience for calling 3906 * {@link android.view.Window#setFeatureDrawableUri}. 3907 */ 3908 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3909 getWindow().setFeatureDrawableUri(featureId, uri); 3910 } 3911 3912 /** 3913 * Convenience for calling 3914 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3915 */ 3916 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3917 getWindow().setFeatureDrawable(featureId, drawable); 3918 } 3919 3920 /** 3921 * Convenience for calling 3922 * {@link android.view.Window#setFeatureDrawableAlpha}. 3923 */ 3924 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3925 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3926 } 3927 3928 /** 3929 * Convenience for calling 3930 * {@link android.view.Window#getLayoutInflater}. 3931 */ 3932 @NonNull 3933 public LayoutInflater getLayoutInflater() { 3934 return getWindow().getLayoutInflater(); 3935 } 3936 3937 /** 3938 * Returns a {@link MenuInflater} with this context. 3939 */ 3940 @NonNull 3941 public MenuInflater getMenuInflater() { 3942 // Make sure that action views can get an appropriate theme. 3943 if (mMenuInflater == null) { 3944 initWindowDecorActionBar(); 3945 if (mActionBar != null) { 3946 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3947 } else { 3948 mMenuInflater = new MenuInflater(this); 3949 } 3950 } 3951 return mMenuInflater; 3952 } 3953 3954 @Override 3955 public void setTheme(int resid) { 3956 super.setTheme(resid); 3957 mWindow.setTheme(resid); 3958 } 3959 3960 @Override 3961 protected void onApplyThemeResource(Resources.Theme theme, @StyleRes int resid, 3962 boolean first) { 3963 if (mParent == null) { 3964 super.onApplyThemeResource(theme, resid, first); 3965 } else { 3966 try { 3967 theme.setTo(mParent.getTheme()); 3968 } catch (Exception e) { 3969 // Empty 3970 } 3971 theme.applyStyle(resid, false); 3972 } 3973 3974 // Get the primary color and update the TaskDescription for this activity 3975 if (theme != null) { 3976 TypedArray a = theme.obtainStyledAttributes(com.android.internal.R.styleable.Theme); 3977 int colorPrimary = a.getColor(com.android.internal.R.styleable.Theme_colorPrimary, 0); 3978 a.recycle(); 3979 if (colorPrimary != 0) { 3980 ActivityManager.TaskDescription v = new ActivityManager.TaskDescription(null, null, 3981 colorPrimary); 3982 setTaskDescription(v); 3983 } 3984 } 3985 } 3986 3987 /** 3988 * Requests permissions to be granted to this application. These permissions 3989 * must be requested in your manifest, they should not be granted to your app, 3990 * and they should have protection level {@link android.content.pm.PermissionInfo 3991 * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by 3992 * the platform or a third-party app. 3993 * <p> 3994 * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} 3995 * are granted at install time if requested in the manifest. Signature permissions 3996 * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at 3997 * install time if requested in the manifest and the signature of your app matches 3998 * the signature of the app declaring the permissions. 3999 * </p> 4000 * <p> 4001 * If your app does not have the requested permissions the user will be presented 4002 * with UI for accepting them. After the user has accepted or rejected the 4003 * requested permissions you will receive a callback on {@link 4004 * #onRequestPermissionsResult(int, String[], int[])} reporting whether the 4005 * permissions were granted or not. 4006 * </p> 4007 * <p> 4008 * Note that requesting a permission does not guarantee it will be granted and 4009 * your app should be able to run without having this permission. 4010 * </p> 4011 * <p> 4012 * This method may start an activity allowing the user to choose which permissions 4013 * to grant and which to reject. Hence, you should be prepared that your activity 4014 * may be paused and resumed. Further, granting some permissions may require 4015 * a restart of you application. In such a case, the system will recreate the 4016 * activity stack before delivering the result to {@link 4017 * #onRequestPermissionsResult(int, String[], int[])}. 4018 * </p> 4019 * <p> 4020 * When checking whether you have a permission you should use {@link 4021 * #checkSelfPermission(String)}. 4022 * </p> 4023 * <p> 4024 * Calling this API for permissions already granted to your app would show UI 4025 * to the user to decide whether the app can still hold these permissions. This 4026 * can be useful if the way your app uses data guarded by the permissions 4027 * changes significantly. 4028 * </p> 4029 * <p> 4030 * You cannot request a permission if your activity sets {@link 4031 * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 4032 * <code>true</code> because in this case the activity would not receive 4033 * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. 4034 * </p> 4035 * <p> 4036 * A sample permissions request looks like this: 4037 * </p> 4038 * <code><pre><p> 4039 * private void showContacts() { 4040 * if (checkSelfPermission(Manifest.permission.READ_CONTACTS) 4041 * != PackageManager.PERMISSION_GRANTED) { 4042 * requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, 4043 * PERMISSIONS_REQUEST_READ_CONTACTS); 4044 * } else { 4045 * doShowContacts(); 4046 * } 4047 * } 4048 * 4049 * {@literal @}Override 4050 * public void onRequestPermissionsResult(int requestCode, String[] permissions, 4051 * int[] grantResults) { 4052 * if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS 4053 * && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 4054 * showContacts(); 4055 * } 4056 * } 4057 * </code></pre></p> 4058 * 4059 * @param permissions The requested permissions. 4060 * @param requestCode Application specific request code to match with a result 4061 * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. 4062 * Should be >= 0. 4063 * 4064 * @see #onRequestPermissionsResult(int, String[], int[]) 4065 * @see #checkSelfPermission(String) 4066 * @see #shouldShowRequestPermissionRationale(String) 4067 */ 4068 public final void requestPermissions(@NonNull String[] permissions, int requestCode) { 4069 if (mHasCurrentPermissionsRequest) { 4070 Log.w(TAG, "Can reqeust only one set of permissions at a time"); 4071 // Dispatch the callback with empty arrays which means a cancellation. 4072 onRequestPermissionsResult(requestCode, new String[0], new int[0]); 4073 return; 4074 } 4075 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 4076 startActivityForResult(REQUEST_PERMISSIONS_WHO_PREFIX, intent, requestCode, null); 4077 mHasCurrentPermissionsRequest = true; 4078 } 4079 4080 /** 4081 * Callback for the result from requesting permissions. This method 4082 * is invoked for every call on {@link #requestPermissions(String[], int)}. 4083 * <p> 4084 * <strong>Note:</strong> It is possible that the permissions request interaction 4085 * with the user is interrupted. In this case you will receive empty permissions 4086 * and results arrays which should be treated as a cancellation. 4087 * </p> 4088 * 4089 * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. 4090 * @param permissions The requested permissions. Never null. 4091 * @param grantResults The grant results for the corresponding permissions 4092 * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} 4093 * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. 4094 * 4095 * @see #requestPermissions(String[], int) 4096 */ 4097 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 4098 @NonNull int[] grantResults) { 4099 /* callback - no nothing */ 4100 } 4101 4102 /** 4103 * Gets whether you should show UI with rationale for requesting a permission. 4104 * You should do this only if you do not have the permission and the context in 4105 * which the permission is requested does not clearly communicate to the user 4106 * what would be the benefit from granting this permission. 4107 * <p> 4108 * For example, if you write a camera app, requesting the camera permission 4109 * would be expected by the user and no rationale for why it is requested is 4110 * needed. If however, the app needs location for tagging photos then a non-tech 4111 * savvy user may wonder how location is related to taking photos. In this case 4112 * you may choose to show UI with rationale of requesting this permission. 4113 * </p> 4114 * 4115 * @param permission A permission your app wants to request. 4116 * @return Whether you can show permission rationale UI. 4117 * 4118 * @see #checkSelfPermission(String) 4119 * @see #requestPermissions(String[], int) 4120 * @see #onRequestPermissionsResult(int, String[], int[]) 4121 */ 4122 public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { 4123 return getPackageManager().shouldShowRequestPermissionRationale(permission); 4124 } 4125 4126 /** 4127 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 4128 * with no options. 4129 * 4130 * @param intent The intent to start. 4131 * @param requestCode If >= 0, this code will be returned in 4132 * onActivityResult() when the activity exits. 4133 * 4134 * @throws android.content.ActivityNotFoundException 4135 * 4136 * @see #startActivity 4137 */ 4138 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode) { 4139 startActivityForResult(intent, requestCode, null); 4140 } 4141 4142 /** 4143 * Launch an activity for which you would like a result when it finished. 4144 * When this activity exits, your 4145 * onActivityResult() method will be called with the given requestCode. 4146 * Using a negative requestCode is the same as calling 4147 * {@link #startActivity} (the activity is not launched as a sub-activity). 4148 * 4149 * <p>Note that this method should only be used with Intent protocols 4150 * that are defined to return a result. In other protocols (such as 4151 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 4152 * not get the result when you expect. For example, if the activity you 4153 * are launching uses the singleTask launch mode, it will not run in your 4154 * task and thus you will immediately receive a cancel result. 4155 * 4156 * <p>As a special case, if you call startActivityForResult() with a requestCode 4157 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 4158 * activity, then your window will not be displayed until a result is 4159 * returned back from the started activity. This is to avoid visible 4160 * flickering when redirecting to another activity. 4161 * 4162 * <p>This method throws {@link android.content.ActivityNotFoundException} 4163 * if there was no Activity found to run the given Intent. 4164 * 4165 * @param intent The intent to start. 4166 * @param requestCode If >= 0, this code will be returned in 4167 * onActivityResult() when the activity exits. 4168 * @param options Additional options for how the Activity should be started. 4169 * See {@link android.content.Context#startActivity(Intent, Bundle) 4170 * Context.startActivity(Intent, Bundle)} for more details. 4171 * 4172 * @throws android.content.ActivityNotFoundException 4173 * 4174 * @see #startActivity 4175 */ 4176 public void startActivityForResult(@RequiresPermission Intent intent, int requestCode, 4177 @Nullable Bundle options) { 4178 if (mParent == null) { 4179 Instrumentation.ActivityResult ar = 4180 mInstrumentation.execStartActivity( 4181 this, mMainThread.getApplicationThread(), mToken, this, 4182 intent, requestCode, options); 4183 if (ar != null) { 4184 mMainThread.sendActivityResult( 4185 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 4186 ar.getResultData()); 4187 } 4188 if (requestCode >= 0) { 4189 // If this start is requesting a result, we can avoid making 4190 // the activity visible until the result is received. Setting 4191 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4192 // activity hidden during this time, to avoid flickering. 4193 // This can only be done when a result is requested because 4194 // that guarantees we will get information back when the 4195 // activity is finished, no matter what happens to it. 4196 mStartedActivity = true; 4197 } 4198 4199 cancelInputsAndStartExitTransition(options); 4200 // TODO Consider clearing/flushing other event sources and events for child windows. 4201 } else { 4202 if (options != null) { 4203 mParent.startActivityFromChild(this, intent, requestCode, options); 4204 } else { 4205 // Note we want to go through this method for compatibility with 4206 // existing applications that may have overridden it. 4207 mParent.startActivityFromChild(this, intent, requestCode); 4208 } 4209 } 4210 } 4211 4212 /** 4213 * Cancels pending inputs and if an Activity Transition is to be run, starts the transition. 4214 * 4215 * @param options The ActivityOptions bundle used to start an Activity. 4216 */ 4217 private void cancelInputsAndStartExitTransition(Bundle options) { 4218 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 4219 if (decor != null) { 4220 decor.cancelPendingInputEvents(); 4221 } 4222 if (options != null && !isTopOfTask()) { 4223 mActivityTransitionState.startExitOutTransition(this, options); 4224 } 4225 } 4226 4227 /** 4228 * @hide Implement to provide correct calling token. 4229 */ 4230 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 4231 startActivityForResultAsUser(intent, requestCode, null, user); 4232 } 4233 4234 /** 4235 * @hide Implement to provide correct calling token. 4236 */ 4237 public void startActivityForResultAsUser(Intent intent, int requestCode, 4238 @Nullable Bundle options, UserHandle user) { 4239 if (mParent != null) { 4240 throw new RuntimeException("Can't be called from a child"); 4241 } 4242 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 4243 this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, 4244 options, user); 4245 if (ar != null) { 4246 mMainThread.sendActivityResult( 4247 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 4248 } 4249 if (requestCode >= 0) { 4250 // If this start is requesting a result, we can avoid making 4251 // the activity visible until the result is received. Setting 4252 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4253 // activity hidden during this time, to avoid flickering. 4254 // This can only be done when a result is requested because 4255 // that guarantees we will get information back when the 4256 // activity is finished, no matter what happens to it. 4257 mStartedActivity = true; 4258 } 4259 4260 cancelInputsAndStartExitTransition(options); 4261 } 4262 4263 /** 4264 * @hide Implement to provide correct calling token. 4265 */ 4266 public void startActivityAsUser(Intent intent, UserHandle user) { 4267 startActivityAsUser(intent, null, user); 4268 } 4269 4270 /** 4271 * @hide Implement to provide correct calling token. 4272 */ 4273 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 4274 if (mParent != null) { 4275 throw new RuntimeException("Can't be called from a child"); 4276 } 4277 Instrumentation.ActivityResult ar = 4278 mInstrumentation.execStartActivity( 4279 this, mMainThread.getApplicationThread(), mToken, this, 4280 intent, -1, options, user); 4281 if (ar != null) { 4282 mMainThread.sendActivityResult( 4283 mToken, mEmbeddedID, -1, ar.getResultCode(), 4284 ar.getResultData()); 4285 } 4286 cancelInputsAndStartExitTransition(options); 4287 } 4288 4289 /** 4290 * Start a new activity as if it was started by the activity that started our 4291 * current activity. This is for the resolver and chooser activities, which operate 4292 * as intermediaries that dispatch their intent to the target the user selects -- to 4293 * do this, they must perform all security checks including permission grants as if 4294 * their launch had come from the original activity. 4295 * @param intent The Intent to start. 4296 * @param options ActivityOptions or null. 4297 * @param ignoreTargetSecurity If true, the activity manager will not check whether the 4298 * caller it is doing the start is, is actually allowed to start the target activity. 4299 * If you set this to true, you must set an explicit component in the Intent and do any 4300 * appropriate security checks yourself. 4301 * @param userId The user the new activity should run as. 4302 * @hide 4303 */ 4304 public void startActivityAsCaller(Intent intent, @Nullable Bundle options, 4305 boolean ignoreTargetSecurity, int userId) { 4306 if (mParent != null) { 4307 throw new RuntimeException("Can't be called from a child"); 4308 } 4309 Instrumentation.ActivityResult ar = 4310 mInstrumentation.execStartActivityAsCaller( 4311 this, mMainThread.getApplicationThread(), mToken, this, 4312 intent, -1, options, ignoreTargetSecurity, userId); 4313 if (ar != null) { 4314 mMainThread.sendActivityResult( 4315 mToken, mEmbeddedID, -1, ar.getResultCode(), 4316 ar.getResultData()); 4317 } 4318 cancelInputsAndStartExitTransition(options); 4319 } 4320 4321 /** 4322 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 4323 * Intent, int, int, int, Bundle)} with no options. 4324 * 4325 * @param intent The IntentSender to launch. 4326 * @param requestCode If >= 0, this code will be returned in 4327 * onActivityResult() when the activity exits. 4328 * @param fillInIntent If non-null, this will be provided as the 4329 * intent parameter to {@link IntentSender#sendIntent}. 4330 * @param flagsMask Intent flags in the original IntentSender that you 4331 * would like to change. 4332 * @param flagsValues Desired values for any bits set in 4333 * <var>flagsMask</var> 4334 * @param extraFlags Always set to 0. 4335 */ 4336 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4337 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4338 throws IntentSender.SendIntentException { 4339 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 4340 flagsValues, extraFlags, null); 4341 } 4342 4343 /** 4344 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 4345 * to use a IntentSender to describe the activity to be started. If 4346 * the IntentSender is for an activity, that activity will be started 4347 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 4348 * here; otherwise, its associated action will be executed (such as 4349 * sending a broadcast) as if you had called 4350 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 4351 * 4352 * @param intent The IntentSender to launch. 4353 * @param requestCode If >= 0, this code will be returned in 4354 * onActivityResult() when the activity exits. 4355 * @param fillInIntent If non-null, this will be provided as the 4356 * intent parameter to {@link IntentSender#sendIntent}. 4357 * @param flagsMask Intent flags in the original IntentSender that you 4358 * would like to change. 4359 * @param flagsValues Desired values for any bits set in 4360 * <var>flagsMask</var> 4361 * @param extraFlags Always set to 0. 4362 * @param options Additional options for how the Activity should be started. 4363 * See {@link android.content.Context#startActivity(Intent, Bundle) 4364 * Context.startActivity(Intent, Bundle)} for more details. If options 4365 * have also been supplied by the IntentSender, options given here will 4366 * override any that conflict with those given by the IntentSender. 4367 */ 4368 public void startIntentSenderForResult(IntentSender intent, int requestCode, 4369 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4370 Bundle options) throws IntentSender.SendIntentException { 4371 if (mParent == null) { 4372 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4373 flagsMask, flagsValues, this, options); 4374 } else if (options != null) { 4375 mParent.startIntentSenderFromChild(this, intent, requestCode, 4376 fillInIntent, flagsMask, flagsValues, extraFlags, options); 4377 } else { 4378 // Note we want to go through this call for compatibility with 4379 // existing applications that may have overridden the method. 4380 mParent.startIntentSenderFromChild(this, intent, requestCode, 4381 fillInIntent, flagsMask, flagsValues, extraFlags); 4382 } 4383 } 4384 4385 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 4386 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 4387 Bundle options) 4388 throws IntentSender.SendIntentException { 4389 try { 4390 String resolvedType = null; 4391 if (fillInIntent != null) { 4392 fillInIntent.migrateExtraStreamToClipData(); 4393 fillInIntent.prepareToLeaveProcess(); 4394 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 4395 } 4396 int result = ActivityManagerNative.getDefault() 4397 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 4398 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 4399 requestCode, flagsMask, flagsValues, options); 4400 if (result == ActivityManager.START_CANCELED) { 4401 throw new IntentSender.SendIntentException(); 4402 } 4403 Instrumentation.checkStartActivityResult(result, null); 4404 } catch (RemoteException e) { 4405 } 4406 if (requestCode >= 0) { 4407 // If this start is requesting a result, we can avoid making 4408 // the activity visible until the result is received. Setting 4409 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4410 // activity hidden during this time, to avoid flickering. 4411 // This can only be done when a result is requested because 4412 // that guarantees we will get information back when the 4413 // activity is finished, no matter what happens to it. 4414 mStartedActivity = true; 4415 } 4416 } 4417 4418 /** 4419 * Same as {@link #startActivity(Intent, Bundle)} with no options 4420 * specified. 4421 * 4422 * @param intent The intent to start. 4423 * 4424 * @throws android.content.ActivityNotFoundException 4425 * 4426 * @see {@link #startActivity(Intent, Bundle)} 4427 * @see #startActivityForResult 4428 */ 4429 @Override 4430 public void startActivity(Intent intent) { 4431 this.startActivity(intent, null); 4432 } 4433 4434 /** 4435 * Launch a new activity. You will not receive any information about when 4436 * the activity exits. This implementation overrides the base version, 4437 * providing information about 4438 * the activity performing the launch. Because of this additional 4439 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4440 * required; if not specified, the new activity will be added to the 4441 * task of the caller. 4442 * 4443 * <p>This method throws {@link android.content.ActivityNotFoundException} 4444 * if there was no Activity found to run the given Intent. 4445 * 4446 * @param intent The intent to start. 4447 * @param options Additional options for how the Activity should be started. 4448 * See {@link android.content.Context#startActivity(Intent, Bundle) 4449 * Context.startActivity(Intent, Bundle)} for more details. 4450 * 4451 * @throws android.content.ActivityNotFoundException 4452 * 4453 * @see {@link #startActivity(Intent)} 4454 * @see #startActivityForResult 4455 */ 4456 @Override 4457 public void startActivity(Intent intent, @Nullable Bundle options) { 4458 if (options != null) { 4459 startActivityForResult(intent, -1, options); 4460 } else { 4461 // Note we want to go through this call for compatibility with 4462 // applications that may have overridden the method. 4463 startActivityForResult(intent, -1); 4464 } 4465 } 4466 4467 /** 4468 * Same as {@link #startActivities(Intent[], Bundle)} with no options 4469 * specified. 4470 * 4471 * @param intents The intents to start. 4472 * 4473 * @throws android.content.ActivityNotFoundException 4474 * 4475 * @see {@link #startActivities(Intent[], Bundle)} 4476 * @see #startActivityForResult 4477 */ 4478 @Override 4479 public void startActivities(Intent[] intents) { 4480 startActivities(intents, null); 4481 } 4482 4483 /** 4484 * Launch a new activity. You will not receive any information about when 4485 * the activity exits. This implementation overrides the base version, 4486 * providing information about 4487 * the activity performing the launch. Because of this additional 4488 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4489 * required; if not specified, the new activity will be added to the 4490 * task of the caller. 4491 * 4492 * <p>This method throws {@link android.content.ActivityNotFoundException} 4493 * if there was no Activity found to run the given Intent. 4494 * 4495 * @param intents The intents to start. 4496 * @param options Additional options for how the Activity should be started. 4497 * See {@link android.content.Context#startActivity(Intent, Bundle) 4498 * Context.startActivity(Intent, Bundle)} for more details. 4499 * 4500 * @throws android.content.ActivityNotFoundException 4501 * 4502 * @see {@link #startActivities(Intent[])} 4503 * @see #startActivityForResult 4504 */ 4505 @Override 4506 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4507 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4508 mToken, this, intents, options); 4509 } 4510 4511 /** 4512 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4513 * with no options. 4514 * 4515 * @param intent The IntentSender to launch. 4516 * @param fillInIntent If non-null, this will be provided as the 4517 * intent parameter to {@link IntentSender#sendIntent}. 4518 * @param flagsMask Intent flags in the original IntentSender that you 4519 * would like to change. 4520 * @param flagsValues Desired values for any bits set in 4521 * <var>flagsMask</var> 4522 * @param extraFlags Always set to 0. 4523 */ 4524 public void startIntentSender(IntentSender intent, 4525 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4526 throws IntentSender.SendIntentException { 4527 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4528 extraFlags, null); 4529 } 4530 4531 /** 4532 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4533 * to start; see 4534 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4535 * for more information. 4536 * 4537 * @param intent The IntentSender to launch. 4538 * @param fillInIntent If non-null, this will be provided as the 4539 * intent parameter to {@link IntentSender#sendIntent}. 4540 * @param flagsMask Intent flags in the original IntentSender that you 4541 * would like to change. 4542 * @param flagsValues Desired values for any bits set in 4543 * <var>flagsMask</var> 4544 * @param extraFlags Always set to 0. 4545 * @param options Additional options for how the Activity should be started. 4546 * See {@link android.content.Context#startActivity(Intent, Bundle) 4547 * Context.startActivity(Intent, Bundle)} for more details. If options 4548 * have also been supplied by the IntentSender, options given here will 4549 * override any that conflict with those given by the IntentSender. 4550 */ 4551 public void startIntentSender(IntentSender intent, 4552 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4553 Bundle options) throws IntentSender.SendIntentException { 4554 if (options != null) { 4555 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4556 flagsValues, extraFlags, options); 4557 } else { 4558 // Note we want to go through this call for compatibility with 4559 // applications that may have overridden the method. 4560 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4561 flagsValues, extraFlags); 4562 } 4563 } 4564 4565 /** 4566 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4567 * with no options. 4568 * 4569 * @param intent The intent to start. 4570 * @param requestCode If >= 0, this code will be returned in 4571 * onActivityResult() when the activity exits, as described in 4572 * {@link #startActivityForResult}. 4573 * 4574 * @return If a new activity was launched then true is returned; otherwise 4575 * false is returned and you must handle the Intent yourself. 4576 * 4577 * @see #startActivity 4578 * @see #startActivityForResult 4579 */ 4580 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4581 int requestCode) { 4582 return startActivityIfNeeded(intent, requestCode, null); 4583 } 4584 4585 /** 4586 * A special variation to launch an activity only if a new activity 4587 * instance is needed to handle the given Intent. In other words, this is 4588 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4589 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4590 * singleTask or singleTop 4591 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4592 * and the activity 4593 * that handles <var>intent</var> is the same as your currently running 4594 * activity, then a new instance is not needed. In this case, instead of 4595 * the normal behavior of calling {@link #onNewIntent} this function will 4596 * return and you can handle the Intent yourself. 4597 * 4598 * <p>This function can only be called from a top-level activity; if it is 4599 * called from a child activity, a runtime exception will be thrown. 4600 * 4601 * @param intent The intent to start. 4602 * @param requestCode If >= 0, this code will be returned in 4603 * onActivityResult() when the activity exits, as described in 4604 * {@link #startActivityForResult}. 4605 * @param options Additional options for how the Activity should be started. 4606 * See {@link android.content.Context#startActivity(Intent, Bundle) 4607 * Context.startActivity(Intent, Bundle)} for more details. 4608 * 4609 * @return If a new activity was launched then true is returned; otherwise 4610 * false is returned and you must handle the Intent yourself. 4611 * 4612 * @see #startActivity 4613 * @see #startActivityForResult 4614 */ 4615 public boolean startActivityIfNeeded(@RequiresPermission @NonNull Intent intent, 4616 int requestCode, @Nullable Bundle options) { 4617 if (mParent == null) { 4618 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4619 try { 4620 Uri referrer = onProvideReferrer(); 4621 if (referrer != null) { 4622 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4623 } 4624 intent.migrateExtraStreamToClipData(); 4625 intent.prepareToLeaveProcess(); 4626 result = ActivityManagerNative.getDefault() 4627 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4628 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4629 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4630 null, options); 4631 } catch (RemoteException e) { 4632 // Empty 4633 } 4634 4635 Instrumentation.checkStartActivityResult(result, intent); 4636 4637 if (requestCode >= 0) { 4638 // If this start is requesting a result, we can avoid making 4639 // the activity visible until the result is received. Setting 4640 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4641 // activity hidden during this time, to avoid flickering. 4642 // This can only be done when a result is requested because 4643 // that guarantees we will get information back when the 4644 // activity is finished, no matter what happens to it. 4645 mStartedActivity = true; 4646 } 4647 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4648 } 4649 4650 throw new UnsupportedOperationException( 4651 "startActivityIfNeeded can only be called from a top-level activity"); 4652 } 4653 4654 /** 4655 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4656 * no options. 4657 * 4658 * @param intent The intent to dispatch to the next activity. For 4659 * correct behavior, this must be the same as the Intent that started 4660 * your own activity; the only changes you can make are to the extras 4661 * inside of it. 4662 * 4663 * @return Returns a boolean indicating whether there was another Activity 4664 * to start: true if there was a next activity to start, false if there 4665 * wasn't. In general, if true is returned you will then want to call 4666 * finish() on yourself. 4667 */ 4668 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent) { 4669 return startNextMatchingActivity(intent, null); 4670 } 4671 4672 /** 4673 * Special version of starting an activity, for use when you are replacing 4674 * other activity components. You can use this to hand the Intent off 4675 * to the next Activity that can handle it. You typically call this in 4676 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4677 * 4678 * @param intent The intent to dispatch to the next activity. For 4679 * correct behavior, this must be the same as the Intent that started 4680 * your own activity; the only changes you can make are to the extras 4681 * inside of it. 4682 * @param options Additional options for how the Activity should be started. 4683 * See {@link android.content.Context#startActivity(Intent, Bundle) 4684 * Context.startActivity(Intent, Bundle)} for more details. 4685 * 4686 * @return Returns a boolean indicating whether there was another Activity 4687 * to start: true if there was a next activity to start, false if there 4688 * wasn't. In general, if true is returned you will then want to call 4689 * finish() on yourself. 4690 */ 4691 public boolean startNextMatchingActivity(@RequiresPermission @NonNull Intent intent, 4692 @Nullable Bundle options) { 4693 if (mParent == null) { 4694 try { 4695 intent.migrateExtraStreamToClipData(); 4696 intent.prepareToLeaveProcess(); 4697 return ActivityManagerNative.getDefault() 4698 .startNextMatchingActivity(mToken, intent, options); 4699 } catch (RemoteException e) { 4700 // Empty 4701 } 4702 return false; 4703 } 4704 4705 throw new UnsupportedOperationException( 4706 "startNextMatchingActivity can only be called from a top-level activity"); 4707 } 4708 4709 /** 4710 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4711 * with no options. 4712 * 4713 * @param child The activity making the call. 4714 * @param intent The intent to start. 4715 * @param requestCode Reply request code. < 0 if reply is not requested. 4716 * 4717 * @throws android.content.ActivityNotFoundException 4718 * 4719 * @see #startActivity 4720 * @see #startActivityForResult 4721 */ 4722 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4723 int requestCode) { 4724 startActivityFromChild(child, intent, requestCode, null); 4725 } 4726 4727 /** 4728 * This is called when a child activity of this one calls its 4729 * {@link #startActivity} or {@link #startActivityForResult} method. 4730 * 4731 * <p>This method throws {@link android.content.ActivityNotFoundException} 4732 * if there was no Activity found to run the given Intent. 4733 * 4734 * @param child The activity making the call. 4735 * @param intent The intent to start. 4736 * @param requestCode Reply request code. < 0 if reply is not requested. 4737 * @param options Additional options for how the Activity should be started. 4738 * See {@link android.content.Context#startActivity(Intent, Bundle) 4739 * Context.startActivity(Intent, Bundle)} for more details. 4740 * 4741 * @throws android.content.ActivityNotFoundException 4742 * 4743 * @see #startActivity 4744 * @see #startActivityForResult 4745 */ 4746 public void startActivityFromChild(@NonNull Activity child, @RequiresPermission Intent intent, 4747 int requestCode, @Nullable Bundle options) { 4748 Instrumentation.ActivityResult ar = 4749 mInstrumentation.execStartActivity( 4750 this, mMainThread.getApplicationThread(), mToken, child, 4751 intent, requestCode, options); 4752 if (ar != null) { 4753 mMainThread.sendActivityResult( 4754 mToken, child.mEmbeddedID, requestCode, 4755 ar.getResultCode(), ar.getResultData()); 4756 } 4757 cancelInputsAndStartExitTransition(options); 4758 } 4759 4760 /** 4761 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4762 * with no options. 4763 * 4764 * @param fragment The fragment making the call. 4765 * @param intent The intent to start. 4766 * @param requestCode Reply request code. < 0 if reply is not requested. 4767 * 4768 * @throws android.content.ActivityNotFoundException 4769 * 4770 * @see Fragment#startActivity 4771 * @see Fragment#startActivityForResult 4772 */ 4773 public void startActivityFromFragment(@NonNull Fragment fragment, 4774 @RequiresPermission Intent intent, int requestCode) { 4775 startActivityFromFragment(fragment, intent, requestCode, null); 4776 } 4777 4778 /** 4779 * This is called when a Fragment in this activity calls its 4780 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4781 * method. 4782 * 4783 * <p>This method throws {@link android.content.ActivityNotFoundException} 4784 * if there was no Activity found to run the given Intent. 4785 * 4786 * @param fragment The fragment making the call. 4787 * @param intent The intent to start. 4788 * @param requestCode Reply request code. < 0 if reply is not requested. 4789 * @param options Additional options for how the Activity should be started. 4790 * See {@link android.content.Context#startActivity(Intent, Bundle) 4791 * Context.startActivity(Intent, Bundle)} for more details. 4792 * 4793 * @throws android.content.ActivityNotFoundException 4794 * 4795 * @see Fragment#startActivity 4796 * @see Fragment#startActivityForResult 4797 */ 4798 public void startActivityFromFragment(@NonNull Fragment fragment, 4799 @RequiresPermission Intent intent, int requestCode, @Nullable Bundle options) { 4800 startActivityForResult(fragment.mWho, intent, requestCode, options); 4801 } 4802 4803 /** 4804 * @hide 4805 */ 4806 @Override 4807 public void startActivityForResult( 4808 String who, Intent intent, int requestCode, @Nullable Bundle options) { 4809 Uri referrer = onProvideReferrer(); 4810 if (referrer != null) { 4811 intent.putExtra(Intent.EXTRA_REFERRER, referrer); 4812 } 4813 Instrumentation.ActivityResult ar = 4814 mInstrumentation.execStartActivity( 4815 this, mMainThread.getApplicationThread(), mToken, who, 4816 intent, requestCode, options); 4817 if (ar != null) { 4818 mMainThread.sendActivityResult( 4819 mToken, who, requestCode, 4820 ar.getResultCode(), ar.getResultData()); 4821 } 4822 cancelInputsAndStartExitTransition(options); 4823 } 4824 4825 /** 4826 * @hide 4827 */ 4828 @Override 4829 public boolean canStartActivityForResult() { 4830 return true; 4831 } 4832 4833 /** 4834 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4835 * int, Intent, int, int, int, Bundle)} with no options. 4836 */ 4837 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4838 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4839 int extraFlags) 4840 throws IntentSender.SendIntentException { 4841 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4842 flagsMask, flagsValues, extraFlags, null); 4843 } 4844 4845 /** 4846 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4847 * taking a IntentSender; see 4848 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4849 * for more information. 4850 */ 4851 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4852 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4853 int extraFlags, @Nullable Bundle options) 4854 throws IntentSender.SendIntentException { 4855 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4856 flagsMask, flagsValues, child, options); 4857 } 4858 4859 /** 4860 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4861 * or {@link #finish} to specify an explicit transition animation to 4862 * perform next. 4863 * 4864 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4865 * to using this with starting activities is to supply the desired animation 4866 * information through a {@link ActivityOptions} bundle to 4867 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4868 * you to specify a custom animation even when starting an activity from 4869 * outside the context of the current top activity. 4870 * 4871 * @param enterAnim A resource ID of the animation resource to use for 4872 * the incoming activity. Use 0 for no animation. 4873 * @param exitAnim A resource ID of the animation resource to use for 4874 * the outgoing activity. Use 0 for no animation. 4875 */ 4876 public void overridePendingTransition(int enterAnim, int exitAnim) { 4877 try { 4878 ActivityManagerNative.getDefault().overridePendingTransition( 4879 mToken, getPackageName(), enterAnim, exitAnim); 4880 } catch (RemoteException e) { 4881 } 4882 } 4883 4884 /** 4885 * Call this to set the result that your activity will return to its 4886 * caller. 4887 * 4888 * @param resultCode The result code to propagate back to the originating 4889 * activity, often RESULT_CANCELED or RESULT_OK 4890 * 4891 * @see #RESULT_CANCELED 4892 * @see #RESULT_OK 4893 * @see #RESULT_FIRST_USER 4894 * @see #setResult(int, Intent) 4895 */ 4896 public final void setResult(int resultCode) { 4897 synchronized (this) { 4898 mResultCode = resultCode; 4899 mResultData = null; 4900 } 4901 } 4902 4903 /** 4904 * Call this to set the result that your activity will return to its 4905 * caller. 4906 * 4907 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4908 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4909 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4910 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4911 * Activity receiving the result access to the specific URIs in the Intent. 4912 * Access will remain until the Activity has finished (it will remain across the hosting 4913 * process being killed and other temporary destruction) and will be added 4914 * to any existing set of URI permissions it already holds. 4915 * 4916 * @param resultCode The result code to propagate back to the originating 4917 * activity, often RESULT_CANCELED or RESULT_OK 4918 * @param data The data to propagate back to the originating activity. 4919 * 4920 * @see #RESULT_CANCELED 4921 * @see #RESULT_OK 4922 * @see #RESULT_FIRST_USER 4923 * @see #setResult(int) 4924 */ 4925 public final void setResult(int resultCode, Intent data) { 4926 synchronized (this) { 4927 mResultCode = resultCode; 4928 mResultData = data; 4929 } 4930 } 4931 4932 /** 4933 * Return information about who launched this activity. If the launching Intent 4934 * contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, 4935 * that will be returned as-is; otherwise, if known, an 4936 * {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the 4937 * package name that started the Intent will be returned. This may return null if no 4938 * referrer can be identified -- it is neither explicitly specified, nor is it known which 4939 * application package was involved. 4940 * 4941 * <p>If called while inside the handling of {@link #onNewIntent}, this function will 4942 * return the referrer that submitted that new intent to the activity. Otherwise, it 4943 * always returns the referrer of the original Intent.</p> 4944 * 4945 * <p>Note that this is <em>not</em> a security feature -- you can not trust the 4946 * referrer information, applications can spoof it.</p> 4947 */ 4948 @Nullable 4949 public Uri getReferrer() { 4950 Intent intent = getIntent(); 4951 Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); 4952 if (referrer != null) { 4953 return referrer; 4954 } 4955 String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); 4956 if (referrerName != null) { 4957 return Uri.parse(referrerName); 4958 } 4959 if (mReferrer != null) { 4960 return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); 4961 } 4962 return null; 4963 } 4964 4965 /** 4966 * Override to generate the desired referrer for the content currently being shown 4967 * by the app. The default implementation returns null, meaning the referrer will simply 4968 * be the android-app: of the package name of this activity. Return a non-null Uri to 4969 * have that supplied as the {@link Intent#EXTRA_REFERRER} of any activities started from it. 4970 */ 4971 public Uri onProvideReferrer() { 4972 return null; 4973 } 4974 4975 /** 4976 * Return the name of the package that invoked this activity. This is who 4977 * the data in {@link #setResult setResult()} will be sent to. You can 4978 * use this information to validate that the recipient is allowed to 4979 * receive the data. 4980 * 4981 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4982 * did not use the {@link #startActivityForResult} 4983 * form that includes a request code), then the calling package will be 4984 * null.</p> 4985 * 4986 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4987 * the result from this method was unstable. If the process hosting the calling 4988 * package was no longer running, it would return null instead of the proper package 4989 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4990 * from that instead.</p> 4991 * 4992 * @return The package of the activity that will receive your 4993 * reply, or null if none. 4994 */ 4995 @Nullable 4996 public String getCallingPackage() { 4997 try { 4998 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4999 } catch (RemoteException e) { 5000 return null; 5001 } 5002 } 5003 5004 /** 5005 * Return the name of the activity that invoked this activity. This is 5006 * who the data in {@link #setResult setResult()} will be sent to. You 5007 * can use this information to validate that the recipient is allowed to 5008 * receive the data. 5009 * 5010 * <p class="note">Note: if the calling activity is not expecting a result (that is it 5011 * did not use the {@link #startActivityForResult} 5012 * form that includes a request code), then the calling package will be 5013 * null. 5014 * 5015 * @return The ComponentName of the activity that will receive your 5016 * reply, or null if none. 5017 */ 5018 @Nullable 5019 public ComponentName getCallingActivity() { 5020 try { 5021 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 5022 } catch (RemoteException e) { 5023 return null; 5024 } 5025 } 5026 5027 /** 5028 * Control whether this activity's main window is visible. This is intended 5029 * only for the special case of an activity that is not going to show a 5030 * UI itself, but can't just finish prior to onResume() because it needs 5031 * to wait for a service binding or such. Setting this to false allows 5032 * you to prevent your UI from being shown during that time. 5033 * 5034 * <p>The default value for this is taken from the 5035 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 5036 */ 5037 public void setVisible(boolean visible) { 5038 if (mVisibleFromClient != visible) { 5039 mVisibleFromClient = visible; 5040 if (mVisibleFromServer) { 5041 if (visible) makeVisible(); 5042 else mDecor.setVisibility(View.INVISIBLE); 5043 } 5044 } 5045 } 5046 5047 void makeVisible() { 5048 if (!mWindowAdded) { 5049 ViewManager wm = getWindowManager(); 5050 wm.addView(mDecor, getWindow().getAttributes()); 5051 mWindowAdded = true; 5052 } 5053 mDecor.setVisibility(View.VISIBLE); 5054 } 5055 5056 /** 5057 * Check to see whether this activity is in the process of finishing, 5058 * either because you called {@link #finish} on it or someone else 5059 * has requested that it finished. This is often used in 5060 * {@link #onPause} to determine whether the activity is simply pausing or 5061 * completely finishing. 5062 * 5063 * @return If the activity is finishing, returns true; else returns false. 5064 * 5065 * @see #finish 5066 */ 5067 public boolean isFinishing() { 5068 return mFinished; 5069 } 5070 5071 /** 5072 * Returns true if the final {@link #onDestroy()} call has been made 5073 * on the Activity, so this instance is now dead. 5074 */ 5075 public boolean isDestroyed() { 5076 return mDestroyed; 5077 } 5078 5079 /** 5080 * Check to see whether this activity is in the process of being destroyed in order to be 5081 * recreated with a new configuration. This is often used in 5082 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 5083 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 5084 * 5085 * @return If the activity is being torn down in order to be recreated with a new configuration, 5086 * returns true; else returns false. 5087 */ 5088 public boolean isChangingConfigurations() { 5089 return mChangingConfigurations; 5090 } 5091 5092 /** 5093 * Cause this Activity to be recreated with a new instance. This results 5094 * in essentially the same flow as when the Activity is created due to 5095 * a configuration change -- the current instance will go through its 5096 * lifecycle to {@link #onDestroy} and a new instance then created after it. 5097 */ 5098 public void recreate() { 5099 if (mParent != null) { 5100 throw new IllegalStateException("Can only be called on top-level activity"); 5101 } 5102 if (Looper.myLooper() != mMainThread.getLooper()) { 5103 throw new IllegalStateException("Must be called from main thread"); 5104 } 5105 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, null, false, 5106 false /* preserveWindow */); 5107 } 5108 5109 /** 5110 * Finishes the current activity and specifies whether to remove the task associated with this 5111 * activity. 5112 */ 5113 private void finish(int finishTask) { 5114 if (mParent == null) { 5115 int resultCode; 5116 Intent resultData; 5117 synchronized (this) { 5118 resultCode = mResultCode; 5119 resultData = mResultData; 5120 } 5121 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 5122 try { 5123 if (resultData != null) { 5124 resultData.prepareToLeaveProcess(); 5125 } 5126 if (ActivityManagerNative.getDefault() 5127 .finishActivity(mToken, resultCode, resultData, finishTask)) { 5128 mFinished = true; 5129 } 5130 } catch (RemoteException e) { 5131 // Empty 5132 } 5133 } else { 5134 mParent.finishFromChild(this); 5135 } 5136 } 5137 5138 /** 5139 * Call this when your activity is done and should be closed. The 5140 * ActivityResult is propagated back to whoever launched you via 5141 * onActivityResult(). 5142 */ 5143 public void finish() { 5144 finish(DONT_FINISH_TASK_WITH_ACTIVITY); 5145 } 5146 5147 /** 5148 * Finish this activity as well as all activities immediately below it 5149 * in the current task that have the same affinity. This is typically 5150 * used when an application can be launched on to another task (such as 5151 * from an ACTION_VIEW of a content type it understands) and the user 5152 * has used the up navigation to switch out of the current task and in 5153 * to its own task. In this case, if the user has navigated down into 5154 * any other activities of the second application, all of those should 5155 * be removed from the original task as part of the task switch. 5156 * 5157 * <p>Note that this finish does <em>not</em> allow you to deliver results 5158 * to the previous activity, and an exception will be thrown if you are trying 5159 * to do so.</p> 5160 */ 5161 public void finishAffinity() { 5162 if (mParent != null) { 5163 throw new IllegalStateException("Can not be called from an embedded activity"); 5164 } 5165 if (mResultCode != RESULT_CANCELED || mResultData != null) { 5166 throw new IllegalStateException("Can not be called to deliver a result"); 5167 } 5168 try { 5169 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 5170 mFinished = true; 5171 } 5172 } catch (RemoteException e) { 5173 // Empty 5174 } 5175 } 5176 5177 /** 5178 * This is called when a child activity of this one calls its 5179 * {@link #finish} method. The default implementation simply calls 5180 * finish() on this activity (the parent), finishing the entire group. 5181 * 5182 * @param child The activity making the call. 5183 * 5184 * @see #finish 5185 */ 5186 public void finishFromChild(Activity child) { 5187 finish(); 5188 } 5189 5190 /** 5191 * Reverses the Activity Scene entry Transition and triggers the calling Activity 5192 * to reverse its exit Transition. When the exit Transition completes, 5193 * {@link #finish()} is called. If no entry Transition was used, finish() is called 5194 * immediately and the Activity exit Transition is run. 5195 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 5196 */ 5197 public void finishAfterTransition() { 5198 if (!mActivityTransitionState.startExitBackTransition(this)) { 5199 finish(); 5200 } 5201 } 5202 5203 /** 5204 * Force finish another activity that you had previously started with 5205 * {@link #startActivityForResult}. 5206 * 5207 * @param requestCode The request code of the activity that you had 5208 * given to startActivityForResult(). If there are multiple 5209 * activities started with this request code, they 5210 * will all be finished. 5211 */ 5212 public void finishActivity(int requestCode) { 5213 if (mParent == null) { 5214 try { 5215 ActivityManagerNative.getDefault() 5216 .finishSubActivity(mToken, mEmbeddedID, requestCode); 5217 } catch (RemoteException e) { 5218 // Empty 5219 } 5220 } else { 5221 mParent.finishActivityFromChild(this, requestCode); 5222 } 5223 } 5224 5225 /** 5226 * This is called when a child activity of this one calls its 5227 * finishActivity(). 5228 * 5229 * @param child The activity making the call. 5230 * @param requestCode Request code that had been used to start the 5231 * activity. 5232 */ 5233 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 5234 try { 5235 ActivityManagerNative.getDefault() 5236 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 5237 } catch (RemoteException e) { 5238 // Empty 5239 } 5240 } 5241 5242 /** 5243 * Call this when your activity is done and should be closed and the task should be completely 5244 * removed as a part of finishing the root activity of the task. 5245 */ 5246 public void finishAndRemoveTask() { 5247 finish(FINISH_TASK_WITH_ROOT_ACTIVITY); 5248 } 5249 5250 /** 5251 * Ask that the local app instance of this activity be released to free up its memory. 5252 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 5253 * a new instance of the activity will later be re-created if needed due to the user 5254 * navigating back to it. 5255 * 5256 * @return Returns true if the activity was in a state that it has started the process 5257 * of destroying its current instance; returns false if for any reason this could not 5258 * be done: it is currently visible to the user, it is already being destroyed, it is 5259 * being finished, it hasn't yet saved its state, etc. 5260 */ 5261 public boolean releaseInstance() { 5262 try { 5263 return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); 5264 } catch (RemoteException e) { 5265 // Empty 5266 } 5267 return false; 5268 } 5269 5270 /** 5271 * Called when an activity you launched exits, giving you the requestCode 5272 * you started it with, the resultCode it returned, and any additional 5273 * data from it. The <var>resultCode</var> will be 5274 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 5275 * didn't return any result, or crashed during its operation. 5276 * 5277 * <p>You will receive this call immediately before onResume() when your 5278 * activity is re-starting. 5279 * 5280 * <p>This method is never invoked if your activity sets 5281 * {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to 5282 * <code>true</code>. 5283 * 5284 * @param requestCode The integer request code originally supplied to 5285 * startActivityForResult(), allowing you to identify who this 5286 * result came from. 5287 * @param resultCode The integer result code returned by the child activity 5288 * through its setResult(). 5289 * @param data An Intent, which can return result data to the caller 5290 * (various data can be attached to Intent "extras"). 5291 * 5292 * @see #startActivityForResult 5293 * @see #createPendingResult 5294 * @see #setResult(int) 5295 */ 5296 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 5297 } 5298 5299 /** 5300 * Called when an activity you launched with an activity transition exposes this 5301 * Activity through a returning activity transition, giving you the resultCode 5302 * and any additional data from it. This method will only be called if the activity 5303 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 5304 * transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 5305 * 5306 * <p>The purpose of this function is to let the called Activity send a hint about 5307 * its state so that this underlying Activity can prepare to be exposed. A call to 5308 * this method does not guarantee that the called Activity has or will be exiting soon. 5309 * It only indicates that it will expose this Activity's Window and it has 5310 * some data to pass to prepare it.</p> 5311 * 5312 * @param resultCode The integer result code returned by the child activity 5313 * through its setResult(). 5314 * @param data An Intent, which can return result data to the caller 5315 * (various data can be attached to Intent "extras"). 5316 */ 5317 public void onActivityReenter(int resultCode, Intent data) { 5318 } 5319 5320 /** 5321 * Create a new PendingIntent object which you can hand to others 5322 * for them to use to send result data back to your 5323 * {@link #onActivityResult} callback. The created object will be either 5324 * one-shot (becoming invalid after a result is sent back) or multiple 5325 * (allowing any number of results to be sent through it). 5326 * 5327 * @param requestCode Private request code for the sender that will be 5328 * associated with the result data when it is returned. The sender can not 5329 * modify this value, allowing you to identify incoming results. 5330 * @param data Default data to supply in the result, which may be modified 5331 * by the sender. 5332 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 5333 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 5334 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 5335 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 5336 * or any of the flags as supported by 5337 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 5338 * of the intent that can be supplied when the actual send happens. 5339 * 5340 * @return Returns an existing or new PendingIntent matching the given 5341 * parameters. May return null only if 5342 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 5343 * supplied. 5344 * 5345 * @see PendingIntent 5346 */ 5347 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 5348 @PendingIntent.Flags int flags) { 5349 String packageName = getPackageName(); 5350 try { 5351 data.prepareToLeaveProcess(); 5352 IIntentSender target = 5353 ActivityManagerNative.getDefault().getIntentSender( 5354 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 5355 mParent == null ? mToken : mParent.mToken, 5356 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 5357 UserHandle.myUserId()); 5358 return target != null ? new PendingIntent(target) : null; 5359 } catch (RemoteException e) { 5360 // Empty 5361 } 5362 return null; 5363 } 5364 5365 /** 5366 * Change the desired orientation of this activity. If the activity 5367 * is currently in the foreground or otherwise impacting the screen 5368 * orientation, the screen will immediately be changed (possibly causing 5369 * the activity to be restarted). Otherwise, this will be used the next 5370 * time the activity is visible. 5371 * 5372 * @param requestedOrientation An orientation constant as used in 5373 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5374 */ 5375 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 5376 if (mParent == null) { 5377 try { 5378 ActivityManagerNative.getDefault().setRequestedOrientation( 5379 mToken, requestedOrientation); 5380 } catch (RemoteException e) { 5381 // Empty 5382 } 5383 } else { 5384 mParent.setRequestedOrientation(requestedOrientation); 5385 } 5386 } 5387 5388 /** 5389 * Return the current requested orientation of the activity. This will 5390 * either be the orientation requested in its component's manifest, or 5391 * the last requested orientation given to 5392 * {@link #setRequestedOrientation(int)}. 5393 * 5394 * @return Returns an orientation constant as used in 5395 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 5396 */ 5397 @ActivityInfo.ScreenOrientation 5398 public int getRequestedOrientation() { 5399 if (mParent == null) { 5400 try { 5401 return ActivityManagerNative.getDefault() 5402 .getRequestedOrientation(mToken); 5403 } catch (RemoteException e) { 5404 // Empty 5405 } 5406 } else { 5407 return mParent.getRequestedOrientation(); 5408 } 5409 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 5410 } 5411 5412 /** 5413 * Return the identifier of the task this activity is in. This identifier 5414 * will remain the same for the lifetime of the activity. 5415 * 5416 * @return Task identifier, an opaque integer. 5417 */ 5418 public int getTaskId() { 5419 try { 5420 return ActivityManagerNative.getDefault() 5421 .getTaskForActivity(mToken, false); 5422 } catch (RemoteException e) { 5423 return -1; 5424 } 5425 } 5426 5427 /** 5428 * Return whether this activity is the root of a task. The root is the 5429 * first activity in a task. 5430 * 5431 * @return True if this is the root activity, else false. 5432 */ 5433 public boolean isTaskRoot() { 5434 try { 5435 return ActivityManagerNative.getDefault().getTaskForActivity(mToken, true) >= 0; 5436 } catch (RemoteException e) { 5437 return false; 5438 } 5439 } 5440 5441 /** 5442 * Move the task containing this activity to the back of the activity 5443 * stack. The activity's order within the task is unchanged. 5444 * 5445 * @param nonRoot If false then this only works if the activity is the root 5446 * of a task; if true it will work for any activity in 5447 * a task. 5448 * 5449 * @return If the task was moved (or it was already at the 5450 * back) true is returned, else false. 5451 */ 5452 public boolean moveTaskToBack(boolean nonRoot) { 5453 try { 5454 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 5455 mToken, nonRoot); 5456 } catch (RemoteException e) { 5457 // Empty 5458 } 5459 return false; 5460 } 5461 5462 /** 5463 * Returns class name for this activity with the package prefix removed. 5464 * This is the default name used to read and write settings. 5465 * 5466 * @return The local class name. 5467 */ 5468 @NonNull 5469 public String getLocalClassName() { 5470 final String pkg = getPackageName(); 5471 final String cls = mComponent.getClassName(); 5472 int packageLen = pkg.length(); 5473 if (!cls.startsWith(pkg) || cls.length() <= packageLen 5474 || cls.charAt(packageLen) != '.') { 5475 return cls; 5476 } 5477 return cls.substring(packageLen+1); 5478 } 5479 5480 /** 5481 * Returns complete component name of this activity. 5482 * 5483 * @return Returns the complete component name for this activity 5484 */ 5485 public ComponentName getComponentName() 5486 { 5487 return mComponent; 5488 } 5489 5490 /** 5491 * Retrieve a {@link SharedPreferences} object for accessing preferences 5492 * that are private to this activity. This simply calls the underlying 5493 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 5494 * class name as the preferences name. 5495 * 5496 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 5497 * operation, {@link #MODE_WORLD_READABLE} and 5498 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 5499 * 5500 * @return Returns the single SharedPreferences instance that can be used 5501 * to retrieve and modify the preference values. 5502 */ 5503 public SharedPreferences getPreferences(int mode) { 5504 return getSharedPreferences(getLocalClassName(), mode); 5505 } 5506 5507 private void ensureSearchManager() { 5508 if (mSearchManager != null) { 5509 return; 5510 } 5511 5512 mSearchManager = new SearchManager(this, null); 5513 } 5514 5515 @Override 5516 public Object getSystemService(@ServiceName @NonNull String name) { 5517 if (getBaseContext() == null) { 5518 throw new IllegalStateException( 5519 "System services not available to Activities before onCreate()"); 5520 } 5521 5522 if (WINDOW_SERVICE.equals(name)) { 5523 return mWindowManager; 5524 } else if (SEARCH_SERVICE.equals(name)) { 5525 ensureSearchManager(); 5526 return mSearchManager; 5527 } 5528 return super.getSystemService(name); 5529 } 5530 5531 /** 5532 * Change the title associated with this activity. If this is a 5533 * top-level activity, the title for its window will change. If it 5534 * is an embedded activity, the parent can do whatever it wants 5535 * with it. 5536 */ 5537 public void setTitle(CharSequence title) { 5538 mTitle = title; 5539 onTitleChanged(title, mTitleColor); 5540 5541 if (mParent != null) { 5542 mParent.onChildTitleChanged(this, title); 5543 } 5544 } 5545 5546 /** 5547 * Change the title associated with this activity. If this is a 5548 * top-level activity, the title for its window will change. If it 5549 * is an embedded activity, the parent can do whatever it wants 5550 * with it. 5551 */ 5552 public void setTitle(int titleId) { 5553 setTitle(getText(titleId)); 5554 } 5555 5556 /** 5557 * Change the color of the title associated with this activity. 5558 * <p> 5559 * This method is deprecated starting in API Level 11 and replaced by action 5560 * bar styles. For information on styling the Action Bar, read the <a 5561 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5562 * guide. 5563 * 5564 * @deprecated Use action bar styles instead. 5565 */ 5566 @Deprecated 5567 public void setTitleColor(int textColor) { 5568 mTitleColor = textColor; 5569 onTitleChanged(mTitle, textColor); 5570 } 5571 5572 public final CharSequence getTitle() { 5573 return mTitle; 5574 } 5575 5576 public final int getTitleColor() { 5577 return mTitleColor; 5578 } 5579 5580 protected void onTitleChanged(CharSequence title, int color) { 5581 if (mTitleReady) { 5582 final Window win = getWindow(); 5583 if (win != null) { 5584 win.setTitle(title); 5585 if (color != 0) { 5586 win.setTitleColor(color); 5587 } 5588 } 5589 if (mActionBar != null) { 5590 mActionBar.setWindowTitle(title); 5591 } 5592 } 5593 } 5594 5595 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5596 } 5597 5598 /** 5599 * Sets information describing the task with this activity for presentation inside the Recents 5600 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5601 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5602 * for each property until a suitable value is found. For each task the taskDescription will be 5603 * returned in {@link android.app.ActivityManager.TaskDescription}. 5604 * 5605 * @see ActivityManager#getRecentTasks 5606 * @see android.app.ActivityManager.TaskDescription 5607 * 5608 * @param taskDescription The TaskDescription properties that describe the task with this activity 5609 */ 5610 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5611 ActivityManager.TaskDescription td; 5612 // Scale the icon down to something reasonable if it is provided 5613 if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { 5614 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5615 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, true); 5616 td = new ActivityManager.TaskDescription(taskDescription.getLabel(), icon, 5617 taskDescription.getPrimaryColor()); 5618 } else { 5619 td = taskDescription; 5620 } 5621 try { 5622 ActivityManagerNative.getDefault().setTaskDescription(mToken, td); 5623 } catch (RemoteException e) { 5624 } 5625 } 5626 5627 /** 5628 * Sets the visibility of the progress bar in the title. 5629 * <p> 5630 * In order for the progress bar to be shown, the feature must be requested 5631 * via {@link #requestWindowFeature(int)}. 5632 * 5633 * @param visible Whether to show the progress bars in the title. 5634 * @deprecated No longer supported starting in API 21. 5635 */ 5636 @Deprecated 5637 public final void setProgressBarVisibility(boolean visible) { 5638 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5639 Window.PROGRESS_VISIBILITY_OFF); 5640 } 5641 5642 /** 5643 * Sets the visibility of the indeterminate progress bar in the title. 5644 * <p> 5645 * In order for the progress bar to be shown, the feature must be requested 5646 * via {@link #requestWindowFeature(int)}. 5647 * 5648 * @param visible Whether to show the progress bars in the title. 5649 * @deprecated No longer supported starting in API 21. 5650 */ 5651 @Deprecated 5652 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5653 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5654 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5655 } 5656 5657 /** 5658 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5659 * is always indeterminate). 5660 * <p> 5661 * In order for the progress bar to be shown, the feature must be requested 5662 * via {@link #requestWindowFeature(int)}. 5663 * 5664 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5665 * @deprecated No longer supported starting in API 21. 5666 */ 5667 @Deprecated 5668 public final void setProgressBarIndeterminate(boolean indeterminate) { 5669 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5670 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5671 : Window.PROGRESS_INDETERMINATE_OFF); 5672 } 5673 5674 /** 5675 * Sets the progress for the progress bars in the title. 5676 * <p> 5677 * In order for the progress bar to be shown, the feature must be requested 5678 * via {@link #requestWindowFeature(int)}. 5679 * 5680 * @param progress The progress for the progress bar. Valid ranges are from 5681 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5682 * bar will be completely filled and will fade out. 5683 * @deprecated No longer supported starting in API 21. 5684 */ 5685 @Deprecated 5686 public final void setProgress(int progress) { 5687 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5688 } 5689 5690 /** 5691 * Sets the secondary progress for the progress bar in the title. This 5692 * progress is drawn between the primary progress (set via 5693 * {@link #setProgress(int)} and the background. It can be ideal for media 5694 * scenarios such as showing the buffering progress while the default 5695 * progress shows the play progress. 5696 * <p> 5697 * In order for the progress bar to be shown, the feature must be requested 5698 * via {@link #requestWindowFeature(int)}. 5699 * 5700 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5701 * 0 to 10000 (both inclusive). 5702 * @deprecated No longer supported starting in API 21. 5703 */ 5704 @Deprecated 5705 public final void setSecondaryProgress(int secondaryProgress) { 5706 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5707 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5708 } 5709 5710 /** 5711 * Suggests an audio stream whose volume should be changed by the hardware 5712 * volume controls. 5713 * <p> 5714 * The suggested audio stream will be tied to the window of this Activity. 5715 * Volume requests which are received while the Activity is in the 5716 * foreground will affect this stream. 5717 * <p> 5718 * It is not guaranteed that the hardware volume controls will always change 5719 * this stream's volume (for example, if a call is in progress, its stream's 5720 * volume may be changed instead). To reset back to the default, use 5721 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5722 * 5723 * @param streamType The type of the audio stream whose volume should be 5724 * changed by the hardware volume controls. 5725 */ 5726 public final void setVolumeControlStream(int streamType) { 5727 getWindow().setVolumeControlStream(streamType); 5728 } 5729 5730 /** 5731 * Gets the suggested audio stream whose volume should be changed by the 5732 * hardware volume controls. 5733 * 5734 * @return The suggested audio stream type whose volume should be changed by 5735 * the hardware volume controls. 5736 * @see #setVolumeControlStream(int) 5737 */ 5738 public final int getVolumeControlStream() { 5739 return getWindow().getVolumeControlStream(); 5740 } 5741 5742 /** 5743 * Sets a {@link MediaController} to send media keys and volume changes to. 5744 * <p> 5745 * The controller will be tied to the window of this Activity. Media key and 5746 * volume events which are received while the Activity is in the foreground 5747 * will be forwarded to the controller and used to invoke transport controls 5748 * or adjust the volume. This may be used instead of or in addition to 5749 * {@link #setVolumeControlStream} to affect a specific session instead of a 5750 * specific stream. 5751 * <p> 5752 * It is not guaranteed that the hardware volume controls will always change 5753 * this session's volume (for example, if a call is in progress, its 5754 * stream's volume may be changed instead). To reset back to the default use 5755 * null as the controller. 5756 * 5757 * @param controller The controller for the session which should receive 5758 * media keys and volume changes. 5759 */ 5760 public final void setMediaController(MediaController controller) { 5761 getWindow().setMediaController(controller); 5762 } 5763 5764 /** 5765 * Gets the controller which should be receiving media key and volume events 5766 * while this activity is in the foreground. 5767 * 5768 * @return The controller which should receive events. 5769 * @see #setMediaController(android.media.session.MediaController) 5770 */ 5771 public final MediaController getMediaController() { 5772 return getWindow().getMediaController(); 5773 } 5774 5775 /** 5776 * Runs the specified action on the UI thread. If the current thread is the UI 5777 * thread, then the action is executed immediately. If the current thread is 5778 * not the UI thread, the action is posted to the event queue of the UI thread. 5779 * 5780 * @param action the action to run on the UI thread 5781 */ 5782 public final void runOnUiThread(Runnable action) { 5783 if (Thread.currentThread() != mUiThread) { 5784 mHandler.post(action); 5785 } else { 5786 action.run(); 5787 } 5788 } 5789 5790 /** 5791 * Standard implementation of 5792 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5793 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5794 * This implementation does nothing and is for 5795 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5796 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5797 * 5798 * @see android.view.LayoutInflater#createView 5799 * @see android.view.Window#getLayoutInflater 5800 */ 5801 @Nullable 5802 public View onCreateView(String name, Context context, AttributeSet attrs) { 5803 return null; 5804 } 5805 5806 /** 5807 * Standard implementation of 5808 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5809 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5810 * This implementation handles <fragment> tags to embed fragments inside 5811 * of the activity. 5812 * 5813 * @see android.view.LayoutInflater#createView 5814 * @see android.view.Window#getLayoutInflater 5815 */ 5816 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5817 if (!"fragment".equals(name)) { 5818 return onCreateView(name, context, attrs); 5819 } 5820 5821 return mFragments.onCreateView(parent, name, context, attrs); 5822 } 5823 5824 /** 5825 * Print the Activity's state into the given stream. This gets invoked if 5826 * you run "adb shell dumpsys activity <activity_component_name>". 5827 * 5828 * @param prefix Desired prefix to prepend at each line of output. 5829 * @param fd The raw file descriptor that the dump is being sent to. 5830 * @param writer The PrintWriter to which you should dump your state. This will be 5831 * closed for you after you return. 5832 * @param args additional arguments to the dump request. 5833 */ 5834 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5835 dumpInner(prefix, fd, writer, args); 5836 } 5837 5838 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5839 writer.print(prefix); writer.print("Local Activity "); 5840 writer.print(Integer.toHexString(System.identityHashCode(this))); 5841 writer.println(" State:"); 5842 String innerPrefix = prefix + " "; 5843 writer.print(innerPrefix); writer.print("mResumed="); 5844 writer.print(mResumed); writer.print(" mStopped="); 5845 writer.print(mStopped); writer.print(" mFinished="); 5846 writer.println(mFinished); 5847 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5848 writer.println(mChangingConfigurations); 5849 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5850 writer.println(mCurrentConfig); 5851 5852 mFragments.dumpLoaders(innerPrefix, fd, writer, args); 5853 mFragments.getFragmentManager().dump(innerPrefix, fd, writer, args); 5854 if (mVoiceInteractor != null) { 5855 mVoiceInteractor.dump(innerPrefix, fd, writer, args); 5856 } 5857 5858 if (getWindow() != null && 5859 getWindow().peekDecorView() != null && 5860 getWindow().peekDecorView().getViewRootImpl() != null) { 5861 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5862 } 5863 5864 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5865 } 5866 5867 /** 5868 * Bit indicating that this activity is "immersive" and should not be 5869 * interrupted by notifications if possible. 5870 * 5871 * This value is initially set by the manifest property 5872 * <code>android:immersive</code> but may be changed at runtime by 5873 * {@link #setImmersive}. 5874 * 5875 * @see #setImmersive(boolean) 5876 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5877 */ 5878 public boolean isImmersive() { 5879 try { 5880 return ActivityManagerNative.getDefault().isImmersive(mToken); 5881 } catch (RemoteException e) { 5882 return false; 5883 } 5884 } 5885 5886 /** 5887 * Indication of whether this is the highest level activity in this task. Can be used to 5888 * determine whether an activity launched by this activity was placed in the same task or 5889 * another task. 5890 * 5891 * @return true if this is the topmost, non-finishing activity in its task. 5892 */ 5893 private boolean isTopOfTask() { 5894 try { 5895 return ActivityManagerNative.getDefault().isTopOfTask(mToken); 5896 } catch (RemoteException e) { 5897 return false; 5898 } 5899 } 5900 5901 /** 5902 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5903 * fullscreen opaque Activity. 5904 * <p> 5905 * Call this whenever the background of a translucent Activity has changed to become opaque. 5906 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5907 * <p> 5908 * This call has no effect on non-translucent activities or on activities with the 5909 * {@link android.R.attr#windowIsFloating} attribute. 5910 * 5911 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5912 * ActivityOptions) 5913 * @see TranslucentConversionListener 5914 * 5915 * @hide 5916 */ 5917 @SystemApi 5918 public void convertFromTranslucent() { 5919 try { 5920 mTranslucentCallback = null; 5921 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5922 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5923 } 5924 } catch (RemoteException e) { 5925 // pass 5926 } 5927 } 5928 5929 /** 5930 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5931 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5932 * <p> 5933 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5934 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5935 * be called indicating that it is safe to make this activity translucent again. Until 5936 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5937 * behind the frontmost Activity will be indeterminate. 5938 * <p> 5939 * This call has no effect on non-translucent activities or on activities with the 5940 * {@link android.R.attr#windowIsFloating} attribute. 5941 * 5942 * @param callback the method to call when all visible Activities behind this one have been 5943 * drawn and it is safe to make this Activity translucent again. 5944 * @param options activity options delivered to the activity below this one. The options 5945 * are retrieved using {@link #getActivityOptions}. 5946 * @return <code>true</code> if Window was opaque and will become translucent or 5947 * <code>false</code> if window was translucent and no change needed to be made. 5948 * 5949 * @see #convertFromTranslucent() 5950 * @see TranslucentConversionListener 5951 * 5952 * @hide 5953 */ 5954 @SystemApi 5955 public boolean convertToTranslucent(TranslucentConversionListener callback, 5956 ActivityOptions options) { 5957 boolean drawComplete; 5958 try { 5959 mTranslucentCallback = callback; 5960 mChangeCanvasToTranslucent = 5961 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 5962 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5963 drawComplete = true; 5964 } catch (RemoteException e) { 5965 // Make callback return as though it timed out. 5966 mChangeCanvasToTranslucent = false; 5967 drawComplete = false; 5968 } 5969 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 5970 // Window is already translucent. 5971 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5972 } 5973 return mChangeCanvasToTranslucent; 5974 } 5975 5976 /** @hide */ 5977 void onTranslucentConversionComplete(boolean drawComplete) { 5978 if (mTranslucentCallback != null) { 5979 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5980 mTranslucentCallback = null; 5981 } 5982 if (mChangeCanvasToTranslucent) { 5983 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5984 } 5985 } 5986 5987 /** @hide */ 5988 public void onNewActivityOptions(ActivityOptions options) { 5989 mActivityTransitionState.setEnterActivityOptions(this, options); 5990 if (!mStopped) { 5991 mActivityTransitionState.enterReady(this); 5992 } 5993 } 5994 5995 /** 5996 * Retrieve the ActivityOptions passed in from the launching activity or passed back 5997 * from an activity launched by this activity in its call to {@link 5998 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 5999 * 6000 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 6001 * @hide 6002 */ 6003 ActivityOptions getActivityOptions() { 6004 try { 6005 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 6006 } catch (RemoteException e) { 6007 } 6008 return null; 6009 } 6010 6011 /** 6012 * Activities that want to remain visible behind a translucent activity above them must call 6013 * this method anytime between the start of {@link #onResume()} and the return from 6014 * {@link #onPause()}. If this call is successful then the activity will remain visible after 6015 * {@link #onPause()} is called, and is allowed to continue playing media in the background. 6016 * 6017 * <p>The actions of this call are reset each time that this activity is brought to the 6018 * front. That is, every time {@link #onResume()} is called the activity will be assumed 6019 * to not have requested visible behind. Therefore, if you want this activity to continue to 6020 * be visible in the background you must call this method again. 6021 * 6022 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 6023 * for dialog and translucent activities. 6024 * 6025 * <p>Under all circumstances, the activity must stop playing and release resources prior to or 6026 * within a call to {@link #onVisibleBehindCanceled()} or if this call returns false. 6027 * 6028 * <p>False will be returned any time this method is called between the return of onPause and 6029 * the next call to onResume. 6030 * 6031 * @param visible true to notify the system that the activity wishes to be visible behind other 6032 * translucent activities, false to indicate otherwise. Resources must be 6033 * released when passing false to this method. 6034 * @return the resulting visibiity state. If true the activity will remain visible beyond 6035 * {@link #onPause()} if the next activity is translucent or not fullscreen. If false 6036 * then the activity may not count on being visible behind other translucent activities, 6037 * and must stop any media playback and release resources. 6038 * Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so 6039 * the return value must be checked. 6040 * 6041 * @see #onVisibleBehindCanceled() 6042 * @see #onBackgroundVisibleBehindChanged(boolean) 6043 */ 6044 public boolean requestVisibleBehind(boolean visible) { 6045 if (!mResumed) { 6046 // Do not permit paused or stopped activities to do this. 6047 visible = false; 6048 } 6049 try { 6050 mVisibleBehind = ActivityManagerNative.getDefault() 6051 .requestVisibleBehind(mToken, visible) && visible; 6052 } catch (RemoteException e) { 6053 mVisibleBehind = false; 6054 } 6055 return mVisibleBehind; 6056 } 6057 6058 /** 6059 * Called when a translucent activity over this activity is becoming opaque or another 6060 * activity is being launched. Activities that override this method must call 6061 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 6062 * 6063 * <p>When this method is called the activity has 500 msec to release any resources it may be 6064 * using while visible in the background. 6065 * If the activity has not returned from this method in 500 msec the system will destroy 6066 * the activity and kill the process in order to recover the resources for another 6067 * process. Otherwise {@link #onStop()} will be called following return. 6068 * 6069 * @see #requestVisibleBehind(boolean) 6070 * @see #onBackgroundVisibleBehindChanged(boolean) 6071 */ 6072 @CallSuper 6073 public void onVisibleBehindCanceled() { 6074 mCalled = true; 6075 } 6076 6077 /** 6078 * Translucent activities may call this to determine if there is an activity below them that 6079 * is currently set to be visible in the background. 6080 * 6081 * @return true if an activity below is set to visible according to the most recent call to 6082 * {@link #requestVisibleBehind(boolean)}, false otherwise. 6083 * 6084 * @see #requestVisibleBehind(boolean) 6085 * @see #onVisibleBehindCanceled() 6086 * @see #onBackgroundVisibleBehindChanged(boolean) 6087 * @hide 6088 */ 6089 @SystemApi 6090 public boolean isBackgroundVisibleBehind() { 6091 try { 6092 return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); 6093 } catch (RemoteException e) { 6094 } 6095 return false; 6096 } 6097 6098 /** 6099 * The topmost foreground activity will receive this call when the background visibility state 6100 * of the activity below it changes. 6101 * 6102 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 6103 * due to a background activity finishing itself. 6104 * 6105 * @param visible true if a background activity is visible, false otherwise. 6106 * 6107 * @see #requestVisibleBehind(boolean) 6108 * @see #onVisibleBehindCanceled() 6109 * @hide 6110 */ 6111 @SystemApi 6112 public void onBackgroundVisibleBehindChanged(boolean visible) { 6113 } 6114 6115 /** 6116 * Activities cannot draw during the period that their windows are animating in. In order 6117 * to know when it is safe to begin drawing they can override this method which will be 6118 * called when the entering animation has completed. 6119 */ 6120 public void onEnterAnimationComplete() { 6121 } 6122 6123 /** 6124 * @hide 6125 */ 6126 public void dispatchEnterAnimationComplete() { 6127 onEnterAnimationComplete(); 6128 if (getWindow() != null && getWindow().getDecorView() != null) { 6129 getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); 6130 } 6131 } 6132 6133 /** 6134 * Adjust the current immersive mode setting. 6135 * 6136 * Note that changing this value will have no effect on the activity's 6137 * {@link android.content.pm.ActivityInfo} structure; that is, if 6138 * <code>android:immersive</code> is set to <code>true</code> 6139 * in the application's manifest entry for this activity, the {@link 6140 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 6141 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6142 * FLAG_IMMERSIVE} bit set. 6143 * 6144 * @see #isImmersive() 6145 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 6146 */ 6147 public void setImmersive(boolean i) { 6148 try { 6149 ActivityManagerNative.getDefault().setImmersive(mToken, i); 6150 } catch (RemoteException e) { 6151 // pass 6152 } 6153 } 6154 6155 /** 6156 * Enable or disable virtual reality (VR) mode. 6157 * 6158 * <p>VR mode is a hint to Android system services to switch to modes optimized for 6159 * high-performance stereoscopic rendering.</p> 6160 * 6161 * @param enabled {@code true} to enable this mode. 6162 */ 6163 public void setVrMode(boolean enabled) { 6164 try { 6165 ActivityManagerNative.getDefault().setVrMode(mToken, enabled); 6166 } catch (RemoteException e) { 6167 // pass 6168 } 6169 } 6170 6171 /** 6172 * Start an action mode of the default type {@link ActionMode#TYPE_PRIMARY}. 6173 * 6174 * @param callback Callback that will manage lifecycle events for this action mode 6175 * @return The ActionMode that was started, or null if it was canceled 6176 * 6177 * @see ActionMode 6178 */ 6179 @Nullable 6180 public ActionMode startActionMode(ActionMode.Callback callback) { 6181 return mWindow.getDecorView().startActionMode(callback); 6182 } 6183 6184 /** 6185 * Start an action mode of the given type. 6186 * 6187 * @param callback Callback that will manage lifecycle events for this action mode 6188 * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}. 6189 * @return The ActionMode that was started, or null if it was canceled 6190 * 6191 * @see ActionMode 6192 */ 6193 @Nullable 6194 public ActionMode startActionMode(ActionMode.Callback callback, int type) { 6195 return mWindow.getDecorView().startActionMode(callback, type); 6196 } 6197 6198 /** 6199 * Give the Activity a chance to control the UI for an action mode requested 6200 * by the system. 6201 * 6202 * <p>Note: If you are looking for a notification callback that an action mode 6203 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 6204 * 6205 * @param callback The callback that should control the new action mode 6206 * @return The new action mode, or <code>null</code> if the activity does not want to 6207 * provide special handling for this action mode. (It will be handled by the system.) 6208 */ 6209 @Nullable 6210 @Override 6211 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 6212 // Only Primary ActionModes are represented in the ActionBar. 6213 if (mActionModeTypeStarting == ActionMode.TYPE_PRIMARY) { 6214 initWindowDecorActionBar(); 6215 if (mActionBar != null) { 6216 return mActionBar.startActionMode(callback); 6217 } 6218 } 6219 return null; 6220 } 6221 6222 /** 6223 * {@inheritDoc} 6224 */ 6225 @Nullable 6226 @Override 6227 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) { 6228 try { 6229 mActionModeTypeStarting = type; 6230 return onWindowStartingActionMode(callback); 6231 } finally { 6232 mActionModeTypeStarting = ActionMode.TYPE_PRIMARY; 6233 } 6234 } 6235 6236 /** 6237 * Notifies the Activity that an action mode has been started. 6238 * Activity subclasses overriding this method should call the superclass implementation. 6239 * 6240 * @param mode The new action mode. 6241 */ 6242 @CallSuper 6243 @Override 6244 public void onActionModeStarted(ActionMode mode) { 6245 } 6246 6247 /** 6248 * Notifies the activity that an action mode has finished. 6249 * Activity subclasses overriding this method should call the superclass implementation. 6250 * 6251 * @param mode The action mode that just finished. 6252 */ 6253 @CallSuper 6254 @Override 6255 public void onActionModeFinished(ActionMode mode) { 6256 } 6257 6258 /** 6259 * Returns true if the app should recreate the task when navigating 'up' from this activity 6260 * by using targetIntent. 6261 * 6262 * <p>If this method returns false the app can trivially call 6263 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 6264 * up navigation. If this method returns false, the app should synthesize a new task stack 6265 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 6266 * 6267 * @param targetIntent An intent representing the target destination for up navigation 6268 * @return true if navigating up should recreate a new task stack, false if the same task 6269 * should be used for the destination 6270 */ 6271 public boolean shouldUpRecreateTask(Intent targetIntent) { 6272 try { 6273 PackageManager pm = getPackageManager(); 6274 ComponentName cn = targetIntent.getComponent(); 6275 if (cn == null) { 6276 cn = targetIntent.resolveActivity(pm); 6277 } 6278 ActivityInfo info = pm.getActivityInfo(cn, 0); 6279 if (info.taskAffinity == null) { 6280 return false; 6281 } 6282 return ActivityManagerNative.getDefault() 6283 .shouldUpRecreateTask(mToken, info.taskAffinity); 6284 } catch (RemoteException e) { 6285 return false; 6286 } catch (NameNotFoundException e) { 6287 return false; 6288 } 6289 } 6290 6291 /** 6292 * Navigate from this activity to the activity specified by upIntent, finishing this activity 6293 * in the process. If the activity indicated by upIntent already exists in the task's history, 6294 * this activity and all others before the indicated activity in the history stack will be 6295 * finished. 6296 * 6297 * <p>If the indicated activity does not appear in the history stack, this will finish 6298 * each activity in this task until the root activity of the task is reached, resulting in 6299 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 6300 * when an activity may be reached by a path not passing through a canonical parent 6301 * activity.</p> 6302 * 6303 * <p>This method should be used when performing up navigation from within the same task 6304 * as the destination. If up navigation should cross tasks in some cases, see 6305 * {@link #shouldUpRecreateTask(Intent)}.</p> 6306 * 6307 * @param upIntent An intent representing the target destination for up navigation 6308 * 6309 * @return true if up navigation successfully reached the activity indicated by upIntent and 6310 * upIntent was delivered to it. false if an instance of the indicated activity could 6311 * not be found and this activity was simply finished normally. 6312 */ 6313 public boolean navigateUpTo(Intent upIntent) { 6314 if (mParent == null) { 6315 ComponentName destInfo = upIntent.getComponent(); 6316 if (destInfo == null) { 6317 destInfo = upIntent.resolveActivity(getPackageManager()); 6318 if (destInfo == null) { 6319 return false; 6320 } 6321 upIntent = new Intent(upIntent); 6322 upIntent.setComponent(destInfo); 6323 } 6324 int resultCode; 6325 Intent resultData; 6326 synchronized (this) { 6327 resultCode = mResultCode; 6328 resultData = mResultData; 6329 } 6330 if (resultData != null) { 6331 resultData.prepareToLeaveProcess(); 6332 } 6333 try { 6334 upIntent.prepareToLeaveProcess(); 6335 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 6336 resultCode, resultData); 6337 } catch (RemoteException e) { 6338 return false; 6339 } 6340 } else { 6341 return mParent.navigateUpToFromChild(this, upIntent); 6342 } 6343 } 6344 6345 /** 6346 * This is called when a child activity of this one calls its 6347 * {@link #navigateUpTo} method. The default implementation simply calls 6348 * navigateUpTo(upIntent) on this activity (the parent). 6349 * 6350 * @param child The activity making the call. 6351 * @param upIntent An intent representing the target destination for up navigation 6352 * 6353 * @return true if up navigation successfully reached the activity indicated by upIntent and 6354 * upIntent was delivered to it. false if an instance of the indicated activity could 6355 * not be found and this activity was simply finished normally. 6356 */ 6357 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 6358 return navigateUpTo(upIntent); 6359 } 6360 6361 /** 6362 * Obtain an {@link Intent} that will launch an explicit target activity specified by 6363 * this activity's logical parent. The logical parent is named in the application's manifest 6364 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 6365 * Activity subclasses may override this method to modify the Intent returned by 6366 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 6367 * the parent intent entirely. 6368 * 6369 * @return a new Intent targeting the defined parent of this activity or null if 6370 * there is no valid parent. 6371 */ 6372 @Nullable 6373 public Intent getParentActivityIntent() { 6374 final String parentName = mActivityInfo.parentActivityName; 6375 if (TextUtils.isEmpty(parentName)) { 6376 return null; 6377 } 6378 6379 // If the parent itself has no parent, generate a main activity intent. 6380 final ComponentName target = new ComponentName(this, parentName); 6381 try { 6382 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 6383 final String parentActivity = parentInfo.parentActivityName; 6384 final Intent parentIntent = parentActivity == null 6385 ? Intent.makeMainActivity(target) 6386 : new Intent().setComponent(target); 6387 return parentIntent; 6388 } catch (NameNotFoundException e) { 6389 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 6390 "' in manifest"); 6391 return null; 6392 } 6393 } 6394 6395 /** 6396 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6397 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6398 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 6399 * {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6400 * 6401 * @param callback Used to manipulate shared element transitions on the launched Activity. 6402 */ 6403 public void setEnterSharedElementCallback(SharedElementCallback callback) { 6404 if (callback == null) { 6405 callback = SharedElementCallback.NULL_CALLBACK; 6406 } 6407 mEnterTransitionListener = callback; 6408 } 6409 6410 /** 6411 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6412 * android.view.View, String)} was used to start an Activity, <var>callback</var> 6413 * will be called to handle shared elements on the <i>launching</i> Activity. Most 6414 * calls will only come when returning from the started Activity. 6415 * This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}. 6416 * 6417 * @param callback Used to manipulate shared element transitions on the launching Activity. 6418 */ 6419 public void setExitSharedElementCallback(SharedElementCallback callback) { 6420 if (callback == null) { 6421 callback = SharedElementCallback.NULL_CALLBACK; 6422 } 6423 mExitTransitionListener = callback; 6424 } 6425 6426 /** 6427 * Postpone the entering activity transition when Activity was started with 6428 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6429 * android.util.Pair[])}. 6430 * <p>This method gives the Activity the ability to delay starting the entering and 6431 * shared element transitions until all data is loaded. Until then, the Activity won't 6432 * draw into its window, leaving the window transparent. This may also cause the 6433 * returning animation to be delayed until data is ready. This method should be 6434 * called in {@link #onCreate(android.os.Bundle)} or in 6435 * {@link #onActivityReenter(int, android.content.Intent)}. 6436 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 6437 * start the transitions. If the Activity did not use 6438 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 6439 * android.util.Pair[])}, then this method does nothing.</p> 6440 */ 6441 public void postponeEnterTransition() { 6442 mActivityTransitionState.postponeEnterTransition(); 6443 } 6444 6445 /** 6446 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 6447 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 6448 * to have your Activity start drawing. 6449 */ 6450 public void startPostponedEnterTransition() { 6451 mActivityTransitionState.startPostponedEnterTransition(); 6452 } 6453 6454 /** 6455 * Create {@link DropPermissions} object bound to this activity and controlling the access 6456 * permissions for content URIs associated with the {@link DragEvent}. 6457 * @param event Drag event 6458 * @return The DropPermissions object used to control access to the content URIs. Null if 6459 * no content URIs are associated with the event or if permissions could not be granted. 6460 */ 6461 public DropPermissions requestDropPermissions(DragEvent event) { 6462 DropPermissions dropPermissions = DropPermissions.obtain(event); 6463 if (dropPermissions != null && dropPermissions.take(getActivityToken())) { 6464 return dropPermissions; 6465 } 6466 return null; 6467 } 6468 6469 // ------------------ Internal API ------------------ 6470 6471 final void setParent(Activity parent) { 6472 mParent = parent; 6473 } 6474 6475 final void attach(Context context, ActivityThread aThread, 6476 Instrumentation instr, IBinder token, int ident, 6477 Application application, Intent intent, ActivityInfo info, 6478 CharSequence title, Activity parent, String id, 6479 NonConfigurationInstances lastNonConfigurationInstances, 6480 Configuration config, String referrer, IVoiceInteractor voiceInteractor, 6481 Window window) { 6482 attachBaseContext(context); 6483 6484 mFragments.attachHost(null /*parent*/); 6485 6486 mWindow = new PhoneWindow(this, window); 6487 mWindow.setWindowControllerCallback(this); 6488 mWindow.setCallback(this); 6489 mWindow.setOnWindowDismissedCallback(this); 6490 mWindow.getLayoutInflater().setPrivateFactory(this); 6491 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 6492 mWindow.setSoftInputMode(info.softInputMode); 6493 } 6494 if (info.uiOptions != 0) { 6495 mWindow.setUiOptions(info.uiOptions); 6496 } 6497 mUiThread = Thread.currentThread(); 6498 6499 mMainThread = aThread; 6500 mInstrumentation = instr; 6501 mToken = token; 6502 mIdent = ident; 6503 mApplication = application; 6504 mIntent = intent; 6505 mReferrer = referrer; 6506 mComponent = intent.getComponent(); 6507 mActivityInfo = info; 6508 mTitle = title; 6509 mParent = parent; 6510 mEmbeddedID = id; 6511 mLastNonConfigurationInstances = lastNonConfigurationInstances; 6512 if (voiceInteractor != null) { 6513 if (lastNonConfigurationInstances != null) { 6514 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 6515 } else { 6516 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 6517 Looper.myLooper()); 6518 } 6519 } 6520 6521 mWindow.setWindowManager( 6522 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 6523 mToken, mComponent.flattenToString(), 6524 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 6525 if (mParent != null) { 6526 mWindow.setContainer(mParent.getWindow()); 6527 } 6528 mWindowManager = mWindow.getWindowManager(); 6529 mCurrentConfig = config; 6530 } 6531 6532 /** @hide */ 6533 public final IBinder getActivityToken() { 6534 return mParent != null ? mParent.getActivityToken() : mToken; 6535 } 6536 6537 final void performCreateCommon() { 6538 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 6539 com.android.internal.R.styleable.Window_windowNoDisplay, false); 6540 mFragments.dispatchActivityCreated(); 6541 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6542 } 6543 6544 final void performCreate(Bundle icicle) { 6545 restoreHasCurrentPermissionRequest(icicle); 6546 onCreate(icicle); 6547 mActivityTransitionState.readState(icicle); 6548 performCreateCommon(); 6549 } 6550 6551 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 6552 restoreHasCurrentPermissionRequest(icicle); 6553 onCreate(icicle, persistentState); 6554 mActivityTransitionState.readState(icicle); 6555 performCreateCommon(); 6556 } 6557 6558 final void performStart() { 6559 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 6560 mFragments.noteStateNotSaved(); 6561 mCalled = false; 6562 mFragments.execPendingActions(); 6563 mInstrumentation.callActivityOnStart(this); 6564 if (!mCalled) { 6565 throw new SuperNotCalledException( 6566 "Activity " + mComponent.toShortString() + 6567 " did not call through to super.onStart()"); 6568 } 6569 mFragments.dispatchStart(); 6570 mFragments.reportLoaderStart(); 6571 mActivityTransitionState.enterReady(this); 6572 } 6573 6574 final void performRestart() { 6575 mFragments.noteStateNotSaved(); 6576 6577 if (mToken != null && mParent == null) { 6578 // We might have view roots that were preserved during a relaunch, we need to start them 6579 // again. We don't need to check mStopped, the roots will check if they were actually 6580 // stopped. 6581 WindowManagerGlobal.getInstance().setStoppedState(mToken, false /* stopped */); 6582 } 6583 6584 if (mStopped) { 6585 mStopped = false; 6586 6587 synchronized (mManagedCursors) { 6588 final int N = mManagedCursors.size(); 6589 for (int i=0; i<N; i++) { 6590 ManagedCursor mc = mManagedCursors.get(i); 6591 if (mc.mReleased || mc.mUpdated) { 6592 if (!mc.mCursor.requery()) { 6593 if (getApplicationInfo().targetSdkVersion 6594 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 6595 throw new IllegalStateException( 6596 "trying to requery an already closed cursor " 6597 + mc.mCursor); 6598 } 6599 } 6600 mc.mReleased = false; 6601 mc.mUpdated = false; 6602 } 6603 } 6604 } 6605 6606 mCalled = false; 6607 mInstrumentation.callActivityOnRestart(this); 6608 if (!mCalled) { 6609 throw new SuperNotCalledException( 6610 "Activity " + mComponent.toShortString() + 6611 " did not call through to super.onRestart()"); 6612 } 6613 performStart(); 6614 } 6615 } 6616 6617 final void performResume() { 6618 performRestart(); 6619 6620 mFragments.execPendingActions(); 6621 6622 mLastNonConfigurationInstances = null; 6623 6624 mCalled = false; 6625 // mResumed is set by the instrumentation 6626 mInstrumentation.callActivityOnResume(this); 6627 if (!mCalled) { 6628 throw new SuperNotCalledException( 6629 "Activity " + mComponent.toShortString() + 6630 " did not call through to super.onResume()"); 6631 } 6632 6633 // invisible activities must be finished before onResume() completes 6634 if (!mVisibleFromClient && !mFinished) { 6635 Log.w(TAG, "An activity without a UI must call finish() before onResume() completes"); 6636 if (getApplicationInfo().targetSdkVersion 6637 > android.os.Build.VERSION_CODES.LOLLIPOP_MR1) { 6638 throw new IllegalStateException( 6639 "Activity " + mComponent.toShortString() + 6640 " did not call finish() prior to onResume() completing"); 6641 } 6642 } 6643 6644 // Now really resume, and install the current status bar and menu. 6645 mCalled = false; 6646 6647 mFragments.dispatchResume(); 6648 mFragments.execPendingActions(); 6649 6650 onPostResume(); 6651 if (!mCalled) { 6652 throw new SuperNotCalledException( 6653 "Activity " + mComponent.toShortString() + 6654 " did not call through to super.onPostResume()"); 6655 } 6656 } 6657 6658 final void performPause() { 6659 mDoReportFullyDrawn = false; 6660 mFragments.dispatchPause(); 6661 mCalled = false; 6662 onPause(); 6663 mResumed = false; 6664 if (!mCalled && getApplicationInfo().targetSdkVersion 6665 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 6666 throw new SuperNotCalledException( 6667 "Activity " + mComponent.toShortString() + 6668 " did not call through to super.onPause()"); 6669 } 6670 mResumed = false; 6671 } 6672 6673 final void performUserLeaving() { 6674 onUserInteraction(); 6675 onUserLeaveHint(); 6676 } 6677 6678 final void performStop() { 6679 mDoReportFullyDrawn = false; 6680 mFragments.doLoaderStop(mChangingConfigurations /*retain*/); 6681 6682 if (!mStopped) { 6683 if (mWindow != null) { 6684 mWindow.closeAllPanels(); 6685 } 6686 6687 if (mToken != null && mParent == null) { 6688 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 6689 } 6690 6691 mFragments.dispatchStop(); 6692 6693 mCalled = false; 6694 mInstrumentation.callActivityOnStop(this); 6695 if (!mCalled) { 6696 throw new SuperNotCalledException( 6697 "Activity " + mComponent.toShortString() + 6698 " did not call through to super.onStop()"); 6699 } 6700 6701 synchronized (mManagedCursors) { 6702 final int N = mManagedCursors.size(); 6703 for (int i=0; i<N; i++) { 6704 ManagedCursor mc = mManagedCursors.get(i); 6705 if (!mc.mReleased) { 6706 mc.mCursor.deactivate(); 6707 mc.mReleased = true; 6708 } 6709 } 6710 } 6711 6712 mStopped = true; 6713 } 6714 mResumed = false; 6715 } 6716 6717 final void performDestroy() { 6718 mDestroyed = true; 6719 mWindow.destroy(); 6720 mFragments.dispatchDestroy(); 6721 onDestroy(); 6722 mFragments.doLoaderDestroy(); 6723 if (mVoiceInteractor != null) { 6724 mVoiceInteractor.detachActivity(); 6725 } 6726 } 6727 6728 /** 6729 * @hide 6730 */ 6731 public final boolean isResumed() { 6732 return mResumed; 6733 } 6734 6735 private void storeHasCurrentPermissionRequest(Bundle bundle) { 6736 if (bundle != null && mHasCurrentPermissionsRequest) { 6737 bundle.putBoolean(HAS_CURENT_PERMISSIONS_REQUEST_KEY, true); 6738 } 6739 } 6740 6741 private void restoreHasCurrentPermissionRequest(Bundle bundle) { 6742 if (bundle != null) { 6743 mHasCurrentPermissionsRequest = bundle.getBoolean( 6744 HAS_CURENT_PERMISSIONS_REQUEST_KEY, false); 6745 } 6746 } 6747 6748 void dispatchActivityResult(String who, int requestCode, 6749 int resultCode, Intent data) { 6750 if (false) Log.v( 6751 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 6752 + ", resCode=" + resultCode + ", data=" + data); 6753 mFragments.noteStateNotSaved(); 6754 if (who == null) { 6755 onActivityResult(requestCode, resultCode, data); 6756 } else if (who.startsWith(REQUEST_PERMISSIONS_WHO_PREFIX)) { 6757 who = who.substring(REQUEST_PERMISSIONS_WHO_PREFIX.length()); 6758 if (TextUtils.isEmpty(who)) { 6759 dispatchRequestPermissionsResult(requestCode, data); 6760 } else { 6761 Fragment frag = mFragments.findFragmentByWho(who); 6762 if (frag != null) { 6763 dispatchRequestPermissionsResultToFragment(requestCode, data, frag); 6764 } 6765 } 6766 } else if (who.startsWith("@android:view:")) { 6767 ArrayList<ViewRootImpl> views = WindowManagerGlobal.getInstance().getRootViews( 6768 getActivityToken()); 6769 for (ViewRootImpl viewRoot : views) { 6770 if (viewRoot.getView() != null 6771 && viewRoot.getView().dispatchActivityResult( 6772 who, requestCode, resultCode, data)) { 6773 return; 6774 } 6775 } 6776 } else { 6777 Fragment frag = mFragments.findFragmentByWho(who); 6778 if (frag != null) { 6779 frag.onActivityResult(requestCode, resultCode, data); 6780 } 6781 } 6782 } 6783 6784 /** 6785 * Request to put this Activity in a mode where the user is locked to the 6786 * current task. 6787 * 6788 * This will prevent the user from launching other apps, going to settings, or reaching the 6789 * home screen. This does not include those apps whose {@link android.R.attr#lockTaskMode} 6790 * values permit launching while locked. 6791 * 6792 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true or 6793 * lockTaskMode=lockTaskModeAlways for this component then the app will go directly into 6794 * Lock Task mode. The user will not be able to exit this mode until 6795 * {@link Activity#stopLockTask()} is called. 6796 * 6797 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 6798 * then the system will prompt the user with a dialog requesting permission to enter 6799 * this mode. When entered through this method the user can exit at any time through 6800 * an action described by the request dialog. Calling stopLockTask will also exit the 6801 * mode. 6802 * 6803 * @see android.R.attr#lockTaskMode 6804 */ 6805 public void startLockTask() { 6806 try { 6807 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 6808 } catch (RemoteException e) { 6809 } 6810 } 6811 6812 /** 6813 * Allow the user to switch away from the current task. 6814 * 6815 * Called to end the mode started by {@link Activity#startLockTask}. This 6816 * can only be called by activities that have successfully called 6817 * startLockTask previously. 6818 * 6819 * This will allow the user to exit this app and move onto other activities. 6820 * <p>Note: This method should only be called when the activity is user-facing. That is, 6821 * between onResume() and onPause(). 6822 * <p>Note: If there are other tasks below this one that are also locked then calling this 6823 * method will immediately finish this task and resume the previous locked one, remaining in 6824 * lockTask mode. 6825 * 6826 * @see android.R.attr#lockTaskMode 6827 * @see ActivityManager#getLockTaskModeState() 6828 */ 6829 public void stopLockTask() { 6830 try { 6831 ActivityManagerNative.getDefault().stopLockTaskMode(); 6832 } catch (RemoteException e) { 6833 } 6834 } 6835 6836 /** 6837 * Shows the user the system defined message for telling the user how to exit 6838 * lock task mode. The task containing this activity must be in lock task mode at the time 6839 * of this call for the message to be displayed. 6840 */ 6841 public void showLockTaskEscapeMessage() { 6842 try { 6843 ActivityManagerNative.getDefault().showLockTaskEscapeMessage(mToken); 6844 } catch (RemoteException e) { 6845 } 6846 } 6847 6848 /** 6849 * Set whether the caption should displayed directly on the content rather than push it down. 6850 * 6851 * This affects only freeform windows since they display the caption and only the main 6852 * window of the activity. The caption is used to drag the window around and also shows 6853 * maximize and close action buttons. 6854 */ 6855 public void overlayWithDecorCaption(boolean overlay) { 6856 mWindow.setOverlayDecorCaption(overlay); 6857 } 6858 6859 /** 6860 * Interface for informing a translucent {@link Activity} once all visible activities below it 6861 * have completed drawing. This is necessary only after an {@link Activity} has been made 6862 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 6863 * translucent again following a call to {@link 6864 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6865 * ActivityOptions)} 6866 * 6867 * @hide 6868 */ 6869 @SystemApi 6870 public interface TranslucentConversionListener { 6871 /** 6872 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 6873 * below the top one have been redrawn. Following this callback it is safe to make the top 6874 * Activity translucent because the underlying Activity has been drawn. 6875 * 6876 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 6877 * occurred waiting for the Activity to complete drawing. 6878 * 6879 * @see Activity#convertFromTranslucent() 6880 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 6881 */ 6882 public void onTranslucentConversionComplete(boolean drawComplete); 6883 } 6884 6885 private void dispatchRequestPermissionsResult(int requestCode, Intent data) { 6886 mHasCurrentPermissionsRequest = false; 6887 // If the package installer crashed we may have not data - best effort. 6888 String[] permissions = (data != null) ? data.getStringArrayExtra( 6889 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6890 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6891 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6892 onRequestPermissionsResult(requestCode, permissions, grantResults); 6893 } 6894 6895 private void dispatchRequestPermissionsResultToFragment(int requestCode, Intent data, 6896 Fragment fragment) { 6897 // If the package installer crashed we may have not data - best effort. 6898 String[] permissions = (data != null) ? data.getStringArrayExtra( 6899 PackageManager.EXTRA_REQUEST_PERMISSIONS_NAMES) : new String[0]; 6900 final int[] grantResults = (data != null) ? data.getIntArrayExtra( 6901 PackageManager.EXTRA_REQUEST_PERMISSIONS_RESULTS) : new int[0]; 6902 fragment.onRequestPermissionsResult(requestCode, permissions, grantResults); 6903 } 6904 6905 class HostCallbacks extends FragmentHostCallback<Activity> { 6906 public HostCallbacks() { 6907 super(Activity.this /*activity*/); 6908 } 6909 6910 @Override 6911 public void onDump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 6912 Activity.this.dump(prefix, fd, writer, args); 6913 } 6914 6915 @Override 6916 public boolean onShouldSaveFragmentState(Fragment fragment) { 6917 return !isFinishing(); 6918 } 6919 6920 @Override 6921 public LayoutInflater onGetLayoutInflater() { 6922 final LayoutInflater result = Activity.this.getLayoutInflater(); 6923 if (onUseFragmentManagerInflaterFactory()) { 6924 return result.cloneInContext(Activity.this); 6925 } 6926 return result; 6927 } 6928 6929 @Override 6930 public boolean onUseFragmentManagerInflaterFactory() { 6931 // Newer platform versions use the child fragment manager's LayoutInflaterFactory. 6932 return getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP; 6933 } 6934 6935 @Override 6936 public Activity onGetHost() { 6937 return Activity.this; 6938 } 6939 6940 @Override 6941 public void onInvalidateOptionsMenu() { 6942 Activity.this.invalidateOptionsMenu(); 6943 } 6944 6945 @Override 6946 public void onStartActivityFromFragment(Fragment fragment, Intent intent, int requestCode, 6947 Bundle options) { 6948 Activity.this.startActivityFromFragment(fragment, intent, requestCode, options); 6949 } 6950 6951 @Override 6952 public void onRequestPermissionsFromFragment(Fragment fragment, String[] permissions, 6953 int requestCode) { 6954 String who = REQUEST_PERMISSIONS_WHO_PREFIX + fragment.mWho; 6955 Intent intent = getPackageManager().buildRequestPermissionsIntent(permissions); 6956 startActivityForResult(who, intent, requestCode, null); 6957 } 6958 6959 @Override 6960 public boolean onHasWindowAnimations() { 6961 return getWindow() != null; 6962 } 6963 6964 @Override 6965 public int onGetWindowAnimations() { 6966 final Window w = getWindow(); 6967 return (w == null) ? 0 : w.getAttributes().windowAnimations; 6968 } 6969 6970 @Override 6971 public void onAttachFragment(Fragment fragment) { 6972 Activity.this.onAttachFragment(fragment); 6973 } 6974 6975 @Nullable 6976 @Override 6977 public View onFindViewById(int id) { 6978 return Activity.this.findViewById(id); 6979 } 6980 6981 @Override 6982 public boolean onHasView() { 6983 final Window w = getWindow(); 6984 return (w != null && w.peekDecorView() != null); 6985 } 6986 } 6987} 6988