Activity.java revision 6558056e8fccc32f9e1dc59e46d09f8d916b7538
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.NonNull; 20import android.os.PersistableBundle; 21import android.transition.Scene; 22import android.transition.TransitionManager; 23import android.util.ArrayMap; 24import android.util.SuperNotCalledException; 25import android.widget.Toolbar; 26 27import com.android.internal.app.IVoiceInteractor; 28import com.android.internal.app.WindowDecorActionBar; 29import com.android.internal.app.ToolbarActionBar; 30import com.android.internal.policy.PolicyManager; 31 32import android.annotation.IntDef; 33import android.annotation.Nullable; 34import android.annotation.SystemApi; 35import android.app.admin.DevicePolicyManager; 36import android.content.ComponentCallbacks2; 37import android.content.ComponentName; 38import android.content.ContentResolver; 39import android.content.Context; 40import android.content.CursorLoader; 41import android.content.IIntentSender; 42import android.content.Intent; 43import android.content.IntentSender; 44import android.content.SharedPreferences; 45import android.content.pm.ActivityInfo; 46import android.content.pm.PackageManager; 47import android.content.pm.PackageManager.NameNotFoundException; 48import android.content.res.Configuration; 49import android.content.res.Resources; 50import android.content.res.TypedArray; 51import android.database.Cursor; 52import android.graphics.Bitmap; 53import android.graphics.Canvas; 54import android.graphics.drawable.Drawable; 55import android.media.AudioManager; 56import android.media.session.MediaController; 57import android.net.Uri; 58import android.os.Build; 59import android.os.Bundle; 60import android.os.Handler; 61import android.os.IBinder; 62import android.os.Looper; 63import android.os.Parcelable; 64import android.os.RemoteException; 65import android.os.StrictMode; 66import android.os.UserHandle; 67import android.text.Selection; 68import android.text.SpannableStringBuilder; 69import android.text.TextUtils; 70import android.text.method.TextKeyListener; 71import android.util.AttributeSet; 72import android.util.EventLog; 73import android.util.Log; 74import android.util.PrintWriterPrinter; 75import android.util.Slog; 76import android.util.SparseArray; 77import android.view.ActionMode; 78import android.view.ContextMenu; 79import android.view.ContextMenu.ContextMenuInfo; 80import android.view.ContextThemeWrapper; 81import android.view.KeyEvent; 82import android.view.LayoutInflater; 83import android.view.Menu; 84import android.view.MenuInflater; 85import android.view.MenuItem; 86import android.view.MotionEvent; 87import android.view.View; 88import android.view.View.OnCreateContextMenuListener; 89import android.view.ViewGroup; 90import android.view.ViewGroup.LayoutParams; 91import android.view.ViewManager; 92import android.view.Window; 93import android.view.WindowManager; 94import android.view.WindowManagerGlobal; 95import android.view.accessibility.AccessibilityEvent; 96import android.widget.AdapterView; 97 98import java.io.FileDescriptor; 99import java.io.PrintWriter; 100import java.lang.annotation.Retention; 101import java.lang.annotation.RetentionPolicy; 102import java.util.ArrayList; 103import java.util.HashMap; 104 105/** 106 * An activity is a single, focused thing that the user can do. Almost all 107 * activities interact with the user, so the Activity class takes care of 108 * creating a window for you in which you can place your UI with 109 * {@link #setContentView}. While activities are often presented to the user 110 * as full-screen windows, they can also be used in other ways: as floating 111 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 112 * or embedded inside of another activity (using {@link ActivityGroup}). 113 * 114 * There are two methods almost all subclasses of Activity will implement: 115 * 116 * <ul> 117 * <li> {@link #onCreate} is where you initialize your activity. Most 118 * importantly, here you will usually call {@link #setContentView(int)} 119 * with a layout resource defining your UI, and using {@link #findViewById} 120 * to retrieve the widgets in that UI that you need to interact with 121 * programmatically. 122 * 123 * <li> {@link #onPause} is where you deal with the user leaving your 124 * activity. Most importantly, any changes made by the user should at this 125 * point be committed (usually to the 126 * {@link android.content.ContentProvider} holding the data). 127 * </ul> 128 * 129 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 130 * activity classes must have a corresponding 131 * {@link android.R.styleable#AndroidManifestActivity <activity>} 132 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 133 * 134 * <p>Topics covered here: 135 * <ol> 136 * <li><a href="#Fragments">Fragments</a> 137 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 138 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 139 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 140 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 141 * <li><a href="#Permissions">Permissions</a> 142 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 143 * </ol> 144 * 145 * <div class="special reference"> 146 * <h3>Developer Guides</h3> 147 * <p>The Activity class is an important part of an application's overall lifecycle, 148 * and the way activities are launched and put together is a fundamental 149 * part of the platform's application model. For a detailed perspective on the structure of an 150 * Android application and how activities behave, please read the 151 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 152 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 153 * developer guides.</p> 154 * 155 * <p>You can also find a detailed discussion about how to create activities in the 156 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 157 * developer guide.</p> 158 * </div> 159 * 160 * <a name="Fragments"></a> 161 * <h3>Fragments</h3> 162 * 163 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 164 * implementations can make use of the {@link Fragment} class to better 165 * modularize their code, build more sophisticated user interfaces for larger 166 * screens, and help scale their application between small and large screens. 167 * 168 * <a name="ActivityLifecycle"></a> 169 * <h3>Activity Lifecycle</h3> 170 * 171 * <p>Activities in the system are managed as an <em>activity stack</em>. 172 * When a new activity is started, it is placed on the top of the stack 173 * and becomes the running activity -- the previous activity always remains 174 * below it in the stack, and will not come to the foreground again until 175 * the new activity exits.</p> 176 * 177 * <p>An activity has essentially four states:</p> 178 * <ul> 179 * <li> If an activity in the foreground of the screen (at the top of 180 * the stack), 181 * it is <em>active</em> or <em>running</em>. </li> 182 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 183 * or transparent activity has focus on top of your activity), it 184 * is <em>paused</em>. A paused activity is completely alive (it 185 * maintains all state and member information and remains attached to 186 * the window manager), but can be killed by the system in extreme 187 * low memory situations. 188 * <li>If an activity is completely obscured by another activity, 189 * it is <em>stopped</em>. It still retains all state and member information, 190 * however, it is no longer visible to the user so its window is hidden 191 * and it will often be killed by the system when memory is needed 192 * elsewhere.</li> 193 * <li>If an activity is paused or stopped, the system can drop the activity 194 * from memory by either asking it to finish, or simply killing its 195 * process. When it is displayed again to the user, it must be 196 * completely restarted and restored to its previous state.</li> 197 * </ul> 198 * 199 * <p>The following diagram shows the important state paths of an Activity. 200 * The square rectangles represent callback methods you can implement to 201 * perform operations when the Activity moves between states. The colored 202 * ovals are major states the Activity can be in.</p> 203 * 204 * <p><img src="../../../images/activity_lifecycle.png" 205 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 206 * 207 * <p>There are three key loops you may be interested in monitoring within your 208 * activity: 209 * 210 * <ul> 211 * <li>The <b>entire lifetime</b> of an activity happens between the first call 212 * to {@link android.app.Activity#onCreate} through to a single final call 213 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 214 * of "global" state in onCreate(), and release all remaining resources in 215 * onDestroy(). For example, if it has a thread running in the background 216 * to download data from the network, it may create that thread in onCreate() 217 * and then stop the thread in onDestroy(). 218 * 219 * <li>The <b>visible lifetime</b> of an activity happens between a call to 220 * {@link android.app.Activity#onStart} until a corresponding call to 221 * {@link android.app.Activity#onStop}. During this time the user can see the 222 * activity on-screen, though it may not be in the foreground and interacting 223 * with the user. Between these two methods you can maintain resources that 224 * are needed to show the activity to the user. For example, you can register 225 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 226 * that impact your UI, and unregister it in onStop() when the user no 227 * longer sees what you are displaying. The onStart() and onStop() methods 228 * can be called multiple times, as the activity becomes visible and hidden 229 * to the user. 230 * 231 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 232 * {@link android.app.Activity#onResume} until a corresponding call to 233 * {@link android.app.Activity#onPause}. During this time the activity is 234 * in front of all other activities and interacting with the user. An activity 235 * can frequently go between the resumed and paused states -- for example when 236 * the device goes to sleep, when an activity result is delivered, when a new 237 * intent is delivered -- so the code in these methods should be fairly 238 * lightweight. 239 * </ul> 240 * 241 * <p>The entire lifecycle of an activity is defined by the following 242 * Activity methods. All of these are hooks that you can override 243 * to do appropriate work when the activity changes state. All 244 * activities will implement {@link android.app.Activity#onCreate} 245 * to do their initial setup; many will also implement 246 * {@link android.app.Activity#onPause} to commit changes to data and 247 * otherwise prepare to stop interacting with the user. You should always 248 * call up to your superclass when implementing these methods.</p> 249 * 250 * </p> 251 * <pre class="prettyprint"> 252 * public class Activity extends ApplicationContext { 253 * protected void onCreate(Bundle savedInstanceState); 254 * 255 * protected void onStart(); 256 * 257 * protected void onRestart(); 258 * 259 * protected void onResume(); 260 * 261 * protected void onPause(); 262 * 263 * protected void onStop(); 264 * 265 * protected void onDestroy(); 266 * } 267 * </pre> 268 * 269 * <p>In general the movement through an activity's lifecycle looks like 270 * this:</p> 271 * 272 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 273 * <colgroup align="left" span="3" /> 274 * <colgroup align="left" /> 275 * <colgroup align="center" /> 276 * <colgroup align="center" /> 277 * 278 * <thead> 279 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 280 * </thead> 281 * 282 * <tbody> 283 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 284 * <td>Called when the activity is first created. 285 * This is where you should do all of your normal static set up: 286 * create views, bind data to lists, etc. This method also 287 * provides you with a Bundle containing the activity's previously 288 * frozen state, if there was one. 289 * <p>Always followed by <code>onStart()</code>.</td> 290 * <td align="center">No</td> 291 * <td align="center"><code>onStart()</code></td> 292 * </tr> 293 * 294 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 295 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 296 * <td>Called after your activity has been stopped, prior to it being 297 * started again. 298 * <p>Always followed by <code>onStart()</code></td> 299 * <td align="center">No</td> 300 * <td align="center"><code>onStart()</code></td> 301 * </tr> 302 * 303 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 304 * <td>Called when the activity is becoming visible to the user. 305 * <p>Followed by <code>onResume()</code> if the activity comes 306 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 307 * <td align="center">No</td> 308 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 309 * </tr> 310 * 311 * <tr><td rowspan="2" style="border-left: none;"> </td> 312 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 313 * <td>Called when the activity will start 314 * interacting with the user. At this point your activity is at 315 * the top of the activity stack, with user input going to it. 316 * <p>Always followed by <code>onPause()</code>.</td> 317 * <td align="center">No</td> 318 * <td align="center"><code>onPause()</code></td> 319 * </tr> 320 * 321 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 322 * <td>Called when the system is about to start resuming a previous 323 * activity. This is typically used to commit unsaved changes to 324 * persistent data, stop animations and other things that may be consuming 325 * CPU, etc. Implementations of this method must be very quick because 326 * the next activity will not be resumed until this method returns. 327 * <p>Followed by either <code>onResume()</code> if the activity 328 * returns back to the front, or <code>onStop()</code> if it becomes 329 * invisible to the user.</td> 330 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 331 * <td align="center"><code>onResume()</code> or<br> 332 * <code>onStop()</code></td> 333 * </tr> 334 * 335 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 336 * <td>Called when the activity is no longer visible to the user, because 337 * another activity has been resumed and is covering this one. This 338 * may happen either because a new activity is being started, an existing 339 * one is being brought in front of this one, or this one is being 340 * destroyed. 341 * <p>Followed by either <code>onRestart()</code> if 342 * this activity is coming back to interact with the user, or 343 * <code>onDestroy()</code> if this activity is going away.</td> 344 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 345 * <td align="center"><code>onRestart()</code> or<br> 346 * <code>onDestroy()</code></td> 347 * </tr> 348 * 349 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 350 * <td>The final call you receive before your 351 * activity is destroyed. This can happen either because the 352 * activity is finishing (someone called {@link Activity#finish} on 353 * it, or because the system is temporarily destroying this 354 * instance of the activity to save space. You can distinguish 355 * between these two scenarios with the {@link 356 * Activity#isFinishing} method.</td> 357 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 358 * <td align="center"><em>nothing</em></td> 359 * </tr> 360 * </tbody> 361 * </table> 362 * 363 * <p>Note the "Killable" column in the above table -- for those methods that 364 * are marked as being killable, after that method returns the process hosting the 365 * activity may killed by the system <em>at any time</em> without another line 366 * of its code being executed. Because of this, you should use the 367 * {@link #onPause} method to write any persistent data (such as user edits) 368 * to storage. In addition, the method 369 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 370 * in such a background state, allowing you to save away any dynamic instance 371 * state in your activity into the given Bundle, to be later received in 372 * {@link #onCreate} if the activity needs to be re-created. 373 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 374 * section for more information on how the lifecycle of a process is tied 375 * to the activities it is hosting. Note that it is important to save 376 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 377 * because the latter is not part of the lifecycle callbacks, so will not 378 * be called in every situation as described in its documentation.</p> 379 * 380 * <p class="note">Be aware that these semantics will change slightly between 381 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 382 * vs. those targeting prior platforms. Starting with Honeycomb, an application 383 * is not in the killable state until its {@link #onStop} has returned. This 384 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 385 * safely called after {@link #onPause()} and allows and application to safely 386 * wait until {@link #onStop()} to save persistent state.</p> 387 * 388 * <p>For those methods that are not marked as being killable, the activity's 389 * process will not be killed by the system starting from the time the method 390 * is called and continuing after it returns. Thus an activity is in the killable 391 * state, for example, between after <code>onPause()</code> to the start of 392 * <code>onResume()</code>.</p> 393 * 394 * <a name="ConfigurationChanges"></a> 395 * <h3>Configuration Changes</h3> 396 * 397 * <p>If the configuration of the device (as defined by the 398 * {@link Configuration Resources.Configuration} class) changes, 399 * then anything displaying a user interface will need to update to match that 400 * configuration. Because Activity is the primary mechanism for interacting 401 * with the user, it includes special support for handling configuration 402 * changes.</p> 403 * 404 * <p>Unless you specify otherwise, a configuration change (such as a change 405 * in screen orientation, language, input devices, etc) will cause your 406 * current activity to be <em>destroyed</em>, going through the normal activity 407 * lifecycle process of {@link #onPause}, 408 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 409 * had been in the foreground or visible to the user, once {@link #onDestroy} is 410 * called in that instance then a new instance of the activity will be 411 * created, with whatever savedInstanceState the previous instance had generated 412 * from {@link #onSaveInstanceState}.</p> 413 * 414 * <p>This is done because any application resource, 415 * including layout files, can change based on any configuration value. Thus 416 * the only safe way to handle a configuration change is to re-retrieve all 417 * resources, including layouts, drawables, and strings. Because activities 418 * must already know how to save their state and re-create themselves from 419 * that state, this is a convenient way to have an activity restart itself 420 * with a new configuration.</p> 421 * 422 * <p>In some special cases, you may want to bypass restarting of your 423 * activity based on one or more types of configuration changes. This is 424 * done with the {@link android.R.attr#configChanges android:configChanges} 425 * attribute in its manifest. For any types of configuration changes you say 426 * that you handle there, you will receive a call to your current activity's 427 * {@link #onConfigurationChanged} method instead of being restarted. If 428 * a configuration change involves any that you do not handle, however, the 429 * activity will still be restarted and {@link #onConfigurationChanged} 430 * will not be called.</p> 431 * 432 * <a name="StartingActivities"></a> 433 * <h3>Starting Activities and Getting Results</h3> 434 * 435 * <p>The {@link android.app.Activity#startActivity} 436 * method is used to start a 437 * new activity, which will be placed at the top of the activity stack. It 438 * takes a single argument, an {@link android.content.Intent Intent}, 439 * which describes the activity 440 * to be executed.</p> 441 * 442 * <p>Sometimes you want to get a result back from an activity when it 443 * ends. For example, you may start an activity that lets the user pick 444 * a person in a list of contacts; when it ends, it returns the person 445 * that was selected. To do this, you call the 446 * {@link android.app.Activity#startActivityForResult(Intent, int)} 447 * version with a second integer parameter identifying the call. The result 448 * will come back through your {@link android.app.Activity#onActivityResult} 449 * method.</p> 450 * 451 * <p>When an activity exits, it can call 452 * {@link android.app.Activity#setResult(int)} 453 * to return data back to its parent. It must always supply a result code, 454 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 455 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 456 * return back an Intent containing any additional data it wants. All of this 457 * information appears back on the 458 * parent's <code>Activity.onActivityResult()</code>, along with the integer 459 * identifier it originally supplied.</p> 460 * 461 * <p>If a child activity fails for any reason (such as crashing), the parent 462 * activity will receive a result with the code RESULT_CANCELED.</p> 463 * 464 * <pre class="prettyprint"> 465 * public class MyActivity extends Activity { 466 * ... 467 * 468 * static final int PICK_CONTACT_REQUEST = 0; 469 * 470 * public boolean onKeyDown(int keyCode, KeyEvent event) { 471 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 472 * // When the user center presses, let them pick a contact. 473 * startActivityForResult( 474 * new Intent(Intent.ACTION_PICK, 475 * new Uri("content://contacts")), 476 * PICK_CONTACT_REQUEST); 477 * return true; 478 * } 479 * return false; 480 * } 481 * 482 * protected void onActivityResult(int requestCode, int resultCode, 483 * Intent data) { 484 * if (requestCode == PICK_CONTACT_REQUEST) { 485 * if (resultCode == RESULT_OK) { 486 * // A contact was picked. Here we will just display it 487 * // to the user. 488 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 489 * } 490 * } 491 * } 492 * } 493 * </pre> 494 * 495 * <a name="SavingPersistentState"></a> 496 * <h3>Saving Persistent State</h3> 497 * 498 * <p>There are generally two kinds of persistent state than an activity 499 * will deal with: shared document-like data (typically stored in a SQLite 500 * database using a {@linkplain android.content.ContentProvider content provider}) 501 * and internal state such as user preferences.</p> 502 * 503 * <p>For content provider data, we suggest that activities use a 504 * "edit in place" user model. That is, any edits a user makes are effectively 505 * made immediately without requiring an additional confirmation step. 506 * Supporting this model is generally a simple matter of following two rules:</p> 507 * 508 * <ul> 509 * <li> <p>When creating a new document, the backing database entry or file for 510 * it is created immediately. For example, if the user chooses to write 511 * a new e-mail, a new entry for that e-mail is created as soon as they 512 * start entering data, so that if they go to any other activity after 513 * that point this e-mail will now appear in the list of drafts.</p> 514 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 515 * commit to the backing content provider or file any changes the user 516 * has made. This ensures that those changes will be seen by any other 517 * activity that is about to run. You will probably want to commit 518 * your data even more aggressively at key times during your 519 * activity's lifecycle: for example before starting a new 520 * activity, before finishing your own activity, when the user 521 * switches between input fields, etc.</p> 522 * </ul> 523 * 524 * <p>This model is designed to prevent data loss when a user is navigating 525 * between activities, and allows the system to safely kill an activity (because 526 * system resources are needed somewhere else) at any time after it has been 527 * paused. Note this implies 528 * that the user pressing BACK from your activity does <em>not</em> 529 * mean "cancel" -- it means to leave the activity with its current contents 530 * saved away. Canceling edits in an activity must be provided through 531 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 532 * 533 * <p>See the {@linkplain android.content.ContentProvider content package} for 534 * more information about content providers. These are a key aspect of how 535 * different activities invoke and propagate data between themselves.</p> 536 * 537 * <p>The Activity class also provides an API for managing internal persistent state 538 * associated with an activity. This can be used, for example, to remember 539 * the user's preferred initial display in a calendar (day view or week view) 540 * or the user's default home page in a web browser.</p> 541 * 542 * <p>Activity persistent state is managed 543 * with the method {@link #getPreferences}, 544 * allowing you to retrieve and 545 * modify a set of name/value pairs associated with the activity. To use 546 * preferences that are shared across multiple application components 547 * (activities, receivers, services, providers), you can use the underlying 548 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 549 * to retrieve a preferences 550 * object stored under a specific name. 551 * (Note that it is not possible to share settings data across application 552 * packages -- for that you will need a content provider.)</p> 553 * 554 * <p>Here is an excerpt from a calendar activity that stores the user's 555 * preferred view mode in its persistent settings:</p> 556 * 557 * <pre class="prettyprint"> 558 * public class CalendarActivity extends Activity { 559 * ... 560 * 561 * static final int DAY_VIEW_MODE = 0; 562 * static final int WEEK_VIEW_MODE = 1; 563 * 564 * private SharedPreferences mPrefs; 565 * private int mCurViewMode; 566 * 567 * protected void onCreate(Bundle savedInstanceState) { 568 * super.onCreate(savedInstanceState); 569 * 570 * SharedPreferences mPrefs = getSharedPreferences(); 571 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 572 * } 573 * 574 * protected void onPause() { 575 * super.onPause(); 576 * 577 * SharedPreferences.Editor ed = mPrefs.edit(); 578 * ed.putInt("view_mode", mCurViewMode); 579 * ed.commit(); 580 * } 581 * } 582 * </pre> 583 * 584 * <a name="Permissions"></a> 585 * <h3>Permissions</h3> 586 * 587 * <p>The ability to start a particular Activity can be enforced when it is 588 * declared in its 589 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 590 * tag. By doing so, other applications will need to declare a corresponding 591 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 592 * element in their own manifest to be able to start that activity. 593 * 594 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 595 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 596 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 597 * Activity access to the specific URIs in the Intent. Access will remain 598 * until the Activity has finished (it will remain across the hosting 599 * process being killed and other temporary destruction). As of 600 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 601 * was already created and a new Intent is being delivered to 602 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 603 * to the existing ones it holds. 604 * 605 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 606 * document for more information on permissions and security in general. 607 * 608 * <a name="ProcessLifecycle"></a> 609 * <h3>Process Lifecycle</h3> 610 * 611 * <p>The Android system attempts to keep application process around for as 612 * long as possible, but eventually will need to remove old processes when 613 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 614 * Lifecycle</a>, the decision about which process to remove is intimately 615 * tied to the state of the user's interaction with it. In general, there 616 * are four states a process can be in based on the activities running in it, 617 * listed here in order of importance. The system will kill less important 618 * processes (the last ones) before it resorts to killing more important 619 * processes (the first ones). 620 * 621 * <ol> 622 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 623 * that the user is currently interacting with) is considered the most important. 624 * Its process will only be killed as a last resort, if it uses more memory 625 * than is available on the device. Generally at this point the device has 626 * reached a memory paging state, so this is required in order to keep the user 627 * interface responsive. 628 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 629 * but not in the foreground, such as one sitting behind a foreground dialog) 630 * is considered extremely important and will not be killed unless that is 631 * required to keep the foreground activity running. 632 * <li> <p>A <b>background activity</b> (an activity that is not visible to 633 * the user and has been paused) is no longer critical, so the system may 634 * safely kill its process to reclaim memory for other foreground or 635 * visible processes. If its process needs to be killed, when the user navigates 636 * back to the activity (making it visible on the screen again), its 637 * {@link #onCreate} method will be called with the savedInstanceState it had previously 638 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 639 * state as the user last left it. 640 * <li> <p>An <b>empty process</b> is one hosting no activities or other 641 * application components (such as {@link Service} or 642 * {@link android.content.BroadcastReceiver} classes). These are killed very 643 * quickly by the system as memory becomes low. For this reason, any 644 * background operation you do outside of an activity must be executed in the 645 * context of an activity BroadcastReceiver or Service to ensure that the system 646 * knows it needs to keep your process around. 647 * </ol> 648 * 649 * <p>Sometimes an Activity may need to do a long-running operation that exists 650 * independently of the activity lifecycle itself. An example may be a camera 651 * application that allows you to upload a picture to a web site. The upload 652 * may take a long time, and the application should allow the user to leave 653 * the application will it is executing. To accomplish this, your Activity 654 * should start a {@link Service} in which the upload takes place. This allows 655 * the system to properly prioritize your process (considering it to be more 656 * important than other non-visible applications) for the duration of the 657 * upload, independent of whether the original activity is paused, stopped, 658 * or finished. 659 */ 660public class Activity extends ContextThemeWrapper 661 implements LayoutInflater.Factory2, 662 Window.Callback, KeyEvent.Callback, 663 OnCreateContextMenuListener, ComponentCallbacks2, 664 Window.OnWindowDismissedCallback { 665 private static final String TAG = "Activity"; 666 private static final boolean DEBUG_LIFECYCLE = false; 667 668 /** Standard activity result: operation canceled. */ 669 public static final int RESULT_CANCELED = 0; 670 /** Standard activity result: operation succeeded. */ 671 public static final int RESULT_OK = -1; 672 /** Start of user-defined activity results. */ 673 public static final int RESULT_FIRST_USER = 1; 674 675 static final String FRAGMENTS_TAG = "android:fragments"; 676 677 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 678 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 679 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 680 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 681 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 682 683 private static class ManagedDialog { 684 Dialog mDialog; 685 Bundle mArgs; 686 } 687 private SparseArray<ManagedDialog> mManagedDialogs; 688 689 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 690 private Instrumentation mInstrumentation; 691 private IBinder mToken; 692 private int mIdent; 693 /*package*/ String mEmbeddedID; 694 private Application mApplication; 695 /*package*/ Intent mIntent; 696 private ComponentName mComponent; 697 /*package*/ ActivityInfo mActivityInfo; 698 /*package*/ ActivityThread mMainThread; 699 Activity mParent; 700 boolean mCalled; 701 boolean mCheckedForLoaderManager; 702 boolean mLoadersStarted; 703 /*package*/ boolean mResumed; 704 private boolean mStopped; 705 boolean mFinished; 706 boolean mStartedActivity; 707 private boolean mDestroyed; 708 private boolean mDoReportFullyDrawn = true; 709 /** true if the activity is going through a transient pause */ 710 /*package*/ boolean mTemporaryPause = false; 711 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 712 /*package*/ boolean mChangingConfigurations = false; 713 /*package*/ int mConfigChangeFlags; 714 /*package*/ Configuration mCurrentConfig; 715 private SearchManager mSearchManager; 716 private MenuInflater mMenuInflater; 717 718 static final class NonConfigurationInstances { 719 Object activity; 720 HashMap<String, Object> children; 721 ArrayList<Fragment> fragments; 722 ArrayMap<String, LoaderManagerImpl> loaders; 723 VoiceInteractor voiceInteractor; 724 } 725 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 726 727 private Window mWindow; 728 729 private WindowManager mWindowManager; 730 /*package*/ View mDecor = null; 731 /*package*/ boolean mWindowAdded = false; 732 /*package*/ boolean mVisibleFromServer = false; 733 /*package*/ boolean mVisibleFromClient = true; 734 /*package*/ ActionBar mActionBar = null; 735 private boolean mEnableDefaultActionBarUp; 736 737 private VoiceInteractor mVoiceInteractor; 738 739 private CharSequence mTitle; 740 private int mTitleColor = 0; 741 742 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 743 final FragmentContainer mContainer = new FragmentContainer() { 744 @Override 745 public View findViewById(int id) { 746 return Activity.this.findViewById(id); 747 } 748 }; 749 750 // Most recent call to requestVisibleBehind(). 751 boolean mVisibleBehind; 752 753 ArrayMap<String, LoaderManagerImpl> mAllLoaderManagers; 754 LoaderManagerImpl mLoaderManager; 755 756 private static final class ManagedCursor { 757 ManagedCursor(Cursor cursor) { 758 mCursor = cursor; 759 mReleased = false; 760 mUpdated = false; 761 } 762 763 private final Cursor mCursor; 764 private boolean mReleased; 765 private boolean mUpdated; 766 } 767 private final ArrayList<ManagedCursor> mManagedCursors = 768 new ArrayList<ManagedCursor>(); 769 770 // protected by synchronized (this) 771 int mResultCode = RESULT_CANCELED; 772 Intent mResultData = null; 773 774 private TranslucentConversionListener mTranslucentCallback; 775 private boolean mChangeCanvasToTranslucent; 776 777 private boolean mTitleReady = false; 778 779 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 780 private SpannableStringBuilder mDefaultKeySsb = null; 781 782 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 783 784 @SuppressWarnings("unused") 785 private final Object mInstanceTracker = StrictMode.trackActivity(this); 786 787 private Thread mUiThread; 788 final Handler mHandler = new Handler(); 789 790 ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 791 SharedElementCallback mEnterTransitionListener = SharedElementCallback.NULL_CALLBACK; 792 SharedElementCallback mExitTransitionListener = SharedElementCallback.NULL_CALLBACK; 793 794 /** Return the intent that started this activity. */ 795 public Intent getIntent() { 796 return mIntent; 797 } 798 799 /** 800 * Change the intent returned by {@link #getIntent}. This holds a 801 * reference to the given intent; it does not copy it. Often used in 802 * conjunction with {@link #onNewIntent}. 803 * 804 * @param newIntent The new Intent object to return from getIntent 805 * 806 * @see #getIntent 807 * @see #onNewIntent 808 */ 809 public void setIntent(Intent newIntent) { 810 mIntent = newIntent; 811 } 812 813 /** Return the application that owns this activity. */ 814 public final Application getApplication() { 815 return mApplication; 816 } 817 818 /** Is this activity embedded inside of another activity? */ 819 public final boolean isChild() { 820 return mParent != null; 821 } 822 823 /** Return the parent activity if this view is an embedded child. */ 824 public final Activity getParent() { 825 return mParent; 826 } 827 828 /** Retrieve the window manager for showing custom windows. */ 829 public WindowManager getWindowManager() { 830 return mWindowManager; 831 } 832 833 /** 834 * Retrieve the current {@link android.view.Window} for the activity. 835 * This can be used to directly access parts of the Window API that 836 * are not available through Activity/Screen. 837 * 838 * @return Window The current window, or null if the activity is not 839 * visual. 840 */ 841 public Window getWindow() { 842 return mWindow; 843 } 844 845 /** 846 * Return the LoaderManager for this activity, creating it if needed. 847 */ 848 public LoaderManager getLoaderManager() { 849 if (mLoaderManager != null) { 850 return mLoaderManager; 851 } 852 mCheckedForLoaderManager = true; 853 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, true); 854 return mLoaderManager; 855 } 856 857 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) { 858 if (mAllLoaderManagers == null) { 859 mAllLoaderManagers = new ArrayMap<String, LoaderManagerImpl>(); 860 } 861 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 862 if (lm == null) { 863 if (create) { 864 lm = new LoaderManagerImpl(who, this, started); 865 mAllLoaderManagers.put(who, lm); 866 } 867 } else { 868 lm.updateActivity(this); 869 } 870 return lm; 871 } 872 873 /** 874 * Calls {@link android.view.Window#getCurrentFocus} on the 875 * Window of this Activity to return the currently focused view. 876 * 877 * @return View The current View with focus or null. 878 * 879 * @see #getWindow 880 * @see android.view.Window#getCurrentFocus 881 */ 882 @Nullable 883 public View getCurrentFocus() { 884 return mWindow != null ? mWindow.getCurrentFocus() : null; 885 } 886 887 /** 888 * Called when the activity is starting. This is where most initialization 889 * should go: calling {@link #setContentView(int)} to inflate the 890 * activity's UI, using {@link #findViewById} to programmatically interact 891 * with widgets in the UI, calling 892 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 893 * cursors for data being displayed, etc. 894 * 895 * <p>You can call {@link #finish} from within this function, in 896 * which case onDestroy() will be immediately called without any of the rest 897 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 898 * {@link #onPause}, etc) executing. 899 * 900 * <p><em>Derived classes must call through to the super class's 901 * implementation of this method. If they do not, an exception will be 902 * thrown.</em></p> 903 * 904 * @param savedInstanceState If the activity is being re-initialized after 905 * previously being shut down then this Bundle contains the data it most 906 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 907 * 908 * @see #onStart 909 * @see #onSaveInstanceState 910 * @see #onRestoreInstanceState 911 * @see #onPostCreate 912 */ 913 protected void onCreate(@Nullable Bundle savedInstanceState) { 914 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 915 if (mLastNonConfigurationInstances != null) { 916 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 917 } 918 if (mActivityInfo.parentActivityName != null) { 919 if (mActionBar == null) { 920 mEnableDefaultActionBarUp = true; 921 } else { 922 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 923 } 924 } 925 if (savedInstanceState != null) { 926 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 927 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 928 ? mLastNonConfigurationInstances.fragments : null); 929 } 930 mFragments.dispatchCreate(); 931 getApplication().dispatchActivityCreated(this, savedInstanceState); 932 if (mVoiceInteractor != null) { 933 mVoiceInteractor.attachActivity(this); 934 } 935 mCalled = true; 936 } 937 938 /** 939 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 940 * the attribute {@link android.R.attr#persistableMode} set to 941 * <code>persistAcrossReboots</code>. 942 * 943 * @param savedInstanceState if the activity is being re-initialized after 944 * previously being shut down then this Bundle contains the data it most 945 * recently supplied in {@link #onSaveInstanceState}. 946 * <b><i>Note: Otherwise it is null.</i></b> 947 * @param persistentState if the activity is being re-initialized after 948 * previously being shut down or powered off then this Bundle contains the data it most 949 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 950 * <b><i>Note: Otherwise it is null.</i></b> 951 * 952 * @see #onCreate(android.os.Bundle) 953 * @see #onStart 954 * @see #onSaveInstanceState 955 * @see #onRestoreInstanceState 956 * @see #onPostCreate 957 */ 958 protected void onCreate(@Nullable Bundle savedInstanceState, 959 @Nullable PersistableBundle persistentState) { 960 onCreate(savedInstanceState); 961 } 962 963 /** 964 * The hook for {@link ActivityThread} to restore the state of this activity. 965 * 966 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 967 * {@link #restoreManagedDialogs(android.os.Bundle)}. 968 * 969 * @param savedInstanceState contains the saved state 970 */ 971 final void performRestoreInstanceState(Bundle savedInstanceState) { 972 onRestoreInstanceState(savedInstanceState); 973 restoreManagedDialogs(savedInstanceState); 974 } 975 976 /** 977 * The hook for {@link ActivityThread} to restore the state of this activity. 978 * 979 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 980 * {@link #restoreManagedDialogs(android.os.Bundle)}. 981 * 982 * @param savedInstanceState contains the saved state 983 * @param persistentState contains the persistable saved state 984 */ 985 final void performRestoreInstanceState(Bundle savedInstanceState, 986 PersistableBundle persistentState) { 987 onRestoreInstanceState(savedInstanceState, persistentState); 988 if (savedInstanceState != null) { 989 restoreManagedDialogs(savedInstanceState); 990 } 991 } 992 993 /** 994 * This method is called after {@link #onStart} when the activity is 995 * being re-initialized from a previously saved state, given here in 996 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 997 * to restore their state, but it is sometimes convenient to do it here 998 * after all of the initialization has been done or to allow subclasses to 999 * decide whether to use your default implementation. The default 1000 * implementation of this method performs a restore of any view state that 1001 * had previously been frozen by {@link #onSaveInstanceState}. 1002 * 1003 * <p>This method is called between {@link #onStart} and 1004 * {@link #onPostCreate}. 1005 * 1006 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1007 * 1008 * @see #onCreate 1009 * @see #onPostCreate 1010 * @see #onResume 1011 * @see #onSaveInstanceState 1012 */ 1013 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1014 if (mWindow != null) { 1015 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1016 if (windowState != null) { 1017 mWindow.restoreHierarchyState(windowState); 1018 } 1019 } 1020 } 1021 1022 /** 1023 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1024 * created with the attribute {@link android.R.attr#persistableMode} set to 1025 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1026 * came from the restored PersistableBundle first 1027 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1028 * 1029 * <p>This method is called between {@link #onStart} and 1030 * {@link #onPostCreate}. 1031 * 1032 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1033 * 1034 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1035 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1036 * 1037 * @see #onRestoreInstanceState(Bundle) 1038 * @see #onCreate 1039 * @see #onPostCreate 1040 * @see #onResume 1041 * @see #onSaveInstanceState 1042 */ 1043 protected void onRestoreInstanceState(Bundle savedInstanceState, 1044 PersistableBundle persistentState) { 1045 if (savedInstanceState != null) { 1046 onRestoreInstanceState(savedInstanceState); 1047 } 1048 } 1049 1050 /** 1051 * Restore the state of any saved managed dialogs. 1052 * 1053 * @param savedInstanceState The bundle to restore from. 1054 */ 1055 private void restoreManagedDialogs(Bundle savedInstanceState) { 1056 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1057 if (b == null) { 1058 return; 1059 } 1060 1061 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1062 final int numDialogs = ids.length; 1063 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1064 for (int i = 0; i < numDialogs; i++) { 1065 final Integer dialogId = ids[i]; 1066 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1067 if (dialogState != null) { 1068 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1069 // so tell createDialog() not to do it, otherwise we get an exception 1070 final ManagedDialog md = new ManagedDialog(); 1071 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1072 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1073 if (md.mDialog != null) { 1074 mManagedDialogs.put(dialogId, md); 1075 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1076 md.mDialog.onRestoreInstanceState(dialogState); 1077 } 1078 } 1079 } 1080 } 1081 1082 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1083 final Dialog dialog = onCreateDialog(dialogId, args); 1084 if (dialog == null) { 1085 return null; 1086 } 1087 dialog.dispatchOnCreate(state); 1088 return dialog; 1089 } 1090 1091 private static String savedDialogKeyFor(int key) { 1092 return SAVED_DIALOG_KEY_PREFIX + key; 1093 } 1094 1095 private static String savedDialogArgsKeyFor(int key) { 1096 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1097 } 1098 1099 /** 1100 * Called when activity start-up is complete (after {@link #onStart} 1101 * and {@link #onRestoreInstanceState} have been called). Applications will 1102 * generally not implement this method; it is intended for system 1103 * classes to do final initialization after application code has run. 1104 * 1105 * <p><em>Derived classes must call through to the super class's 1106 * implementation of this method. If they do not, an exception will be 1107 * thrown.</em></p> 1108 * 1109 * @param savedInstanceState If the activity is being re-initialized after 1110 * previously being shut down then this Bundle contains the data it most 1111 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1112 * @see #onCreate 1113 */ 1114 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1115 if (!isChild()) { 1116 mTitleReady = true; 1117 onTitleChanged(getTitle(), getTitleColor()); 1118 } 1119 mCalled = true; 1120 } 1121 1122 /** 1123 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1124 * created with the attribute {@link android.R.attr#persistableMode} set to 1125 * <code>persistAcrossReboots</code>. 1126 * 1127 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1128 * @param persistentState The data caming from the PersistableBundle first 1129 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1130 * 1131 * @see #onCreate 1132 */ 1133 protected void onPostCreate(@Nullable Bundle savedInstanceState, 1134 @Nullable PersistableBundle persistentState) { 1135 onPostCreate(savedInstanceState); 1136 } 1137 1138 /** 1139 * Called after {@link #onCreate} — or after {@link #onRestart} when 1140 * the activity had been stopped, but is now again being displayed to the 1141 * user. It will be followed by {@link #onResume}. 1142 * 1143 * <p><em>Derived classes must call through to the super class's 1144 * implementation of this method. If they do not, an exception will be 1145 * thrown.</em></p> 1146 * 1147 * @see #onCreate 1148 * @see #onStop 1149 * @see #onResume 1150 */ 1151 protected void onStart() { 1152 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1153 mCalled = true; 1154 1155 if (!mLoadersStarted) { 1156 mLoadersStarted = true; 1157 if (mLoaderManager != null) { 1158 mLoaderManager.doStart(); 1159 } else if (!mCheckedForLoaderManager) { 1160 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, false); 1161 } 1162 mCheckedForLoaderManager = true; 1163 } 1164 1165 getApplication().dispatchActivityStarted(this); 1166 } 1167 1168 /** 1169 * Called after {@link #onStop} when the current activity is being 1170 * re-displayed to the user (the user has navigated back to it). It will 1171 * be followed by {@link #onStart} and then {@link #onResume}. 1172 * 1173 * <p>For activities that are using raw {@link Cursor} objects (instead of 1174 * creating them through 1175 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1176 * this is usually the place 1177 * where the cursor should be requeried (because you had deactivated it in 1178 * {@link #onStop}. 1179 * 1180 * <p><em>Derived classes must call through to the super class's 1181 * implementation of this method. If they do not, an exception will be 1182 * thrown.</em></p> 1183 * 1184 * @see #onStop 1185 * @see #onStart 1186 * @see #onResume 1187 */ 1188 protected void onRestart() { 1189 mCalled = true; 1190 } 1191 1192 /** 1193 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1194 * {@link #onPause}, for your activity to start interacting with the user. 1195 * This is a good place to begin animations, open exclusive-access devices 1196 * (such as the camera), etc. 1197 * 1198 * <p>Keep in mind that onResume is not the best indicator that your activity 1199 * is visible to the user; a system window such as the keyguard may be in 1200 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1201 * activity is visible to the user (for example, to resume a game). 1202 * 1203 * <p><em>Derived classes must call through to the super class's 1204 * implementation of this method. If they do not, an exception will be 1205 * thrown.</em></p> 1206 * 1207 * @see #onRestoreInstanceState 1208 * @see #onRestart 1209 * @see #onPostResume 1210 * @see #onPause 1211 */ 1212 protected void onResume() { 1213 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1214 getApplication().dispatchActivityResumed(this); 1215 mActivityTransitionState.onResume(); 1216 mCalled = true; 1217 } 1218 1219 /** 1220 * Called when activity resume is complete (after {@link #onResume} has 1221 * been called). Applications will generally not implement this method; 1222 * it is intended for system classes to do final setup after application 1223 * resume code has run. 1224 * 1225 * <p><em>Derived classes must call through to the super class's 1226 * implementation of this method. If they do not, an exception will be 1227 * thrown.</em></p> 1228 * 1229 * @see #onResume 1230 */ 1231 protected void onPostResume() { 1232 final Window win = getWindow(); 1233 if (win != null) win.makeActive(); 1234 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1235 mCalled = true; 1236 } 1237 1238 /** 1239 * @hide 1240 * Check whether this activity is running as part of a voice interaction with the user. 1241 * If true, it should perform its interaction with the user through the 1242 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1243 */ 1244 @SystemApi 1245 public boolean isVoiceInteraction() { 1246 return mVoiceInteractor != null; 1247 } 1248 1249 /** 1250 * @hide 1251 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1252 * interact with this activity. 1253 */ 1254 @SystemApi 1255 public VoiceInteractor getVoiceInteractor() { 1256 return mVoiceInteractor; 1257 } 1258 1259 /** 1260 * This is called for activities that set launchMode to "singleTop" in 1261 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1262 * flag when calling {@link #startActivity}. In either case, when the 1263 * activity is re-launched while at the top of the activity stack instead 1264 * of a new instance of the activity being started, onNewIntent() will be 1265 * called on the existing instance with the Intent that was used to 1266 * re-launch it. 1267 * 1268 * <p>An activity will always be paused before receiving a new intent, so 1269 * you can count on {@link #onResume} being called after this method. 1270 * 1271 * <p>Note that {@link #getIntent} still returns the original Intent. You 1272 * can use {@link #setIntent} to update it to this new Intent. 1273 * 1274 * @param intent The new intent that was started for the activity. 1275 * 1276 * @see #getIntent 1277 * @see #setIntent 1278 * @see #onResume 1279 */ 1280 protected void onNewIntent(Intent intent) { 1281 } 1282 1283 /** 1284 * The hook for {@link ActivityThread} to save the state of this activity. 1285 * 1286 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1287 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1288 * 1289 * @param outState The bundle to save the state to. 1290 */ 1291 final void performSaveInstanceState(Bundle outState) { 1292 onSaveInstanceState(outState); 1293 saveManagedDialogs(outState); 1294 mActivityTransitionState.saveState(outState); 1295 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1296 } 1297 1298 /** 1299 * The hook for {@link ActivityThread} to save the state of this activity. 1300 * 1301 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1302 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1303 * 1304 * @param outState The bundle to save the state to. 1305 * @param outPersistentState The bundle to save persistent state to. 1306 */ 1307 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1308 onSaveInstanceState(outState, outPersistentState); 1309 saveManagedDialogs(outState); 1310 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1311 ", " + outPersistentState); 1312 } 1313 1314 /** 1315 * Called to retrieve per-instance state from an activity before being killed 1316 * so that the state can be restored in {@link #onCreate} or 1317 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1318 * will be passed to both). 1319 * 1320 * <p>This method is called before an activity may be killed so that when it 1321 * comes back some time in the future it can restore its state. For example, 1322 * if activity B is launched in front of activity A, and at some point activity 1323 * A is killed to reclaim resources, activity A will have a chance to save the 1324 * current state of its user interface via this method so that when the user 1325 * returns to activity A, the state of the user interface can be restored 1326 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1327 * 1328 * <p>Do not confuse this method with activity lifecycle callbacks such as 1329 * {@link #onPause}, which is always called when an activity is being placed 1330 * in the background or on its way to destruction, or {@link #onStop} which 1331 * is called before destruction. One example of when {@link #onPause} and 1332 * {@link #onStop} is called and not this method is when a user navigates back 1333 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1334 * on B because that particular instance will never be restored, so the 1335 * system avoids calling it. An example when {@link #onPause} is called and 1336 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1337 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1338 * killed during the lifetime of B since the state of the user interface of 1339 * A will stay intact. 1340 * 1341 * <p>The default implementation takes care of most of the UI per-instance 1342 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1343 * view in the hierarchy that has an id, and by saving the id of the currently 1344 * focused view (all of which is restored by the default implementation of 1345 * {@link #onRestoreInstanceState}). If you override this method to save additional 1346 * information not captured by each individual view, you will likely want to 1347 * call through to the default implementation, otherwise be prepared to save 1348 * all of the state of each view yourself. 1349 * 1350 * <p>If called, this method will occur before {@link #onStop}. There are 1351 * no guarantees about whether it will occur before or after {@link #onPause}. 1352 * 1353 * @param outState Bundle in which to place your saved state. 1354 * 1355 * @see #onCreate 1356 * @see #onRestoreInstanceState 1357 * @see #onPause 1358 */ 1359 protected void onSaveInstanceState(Bundle outState) { 1360 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1361 Parcelable p = mFragments.saveAllState(); 1362 if (p != null) { 1363 outState.putParcelable(FRAGMENTS_TAG, p); 1364 } 1365 getApplication().dispatchActivitySaveInstanceState(this, outState); 1366 } 1367 1368 /** 1369 * This is the same as {@link #onSaveInstanceState} but is called for activities 1370 * created with the attribute {@link android.R.attr#persistableMode} set to 1371 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1372 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1373 * the first time that this activity is restarted following the next device reboot. 1374 * 1375 * @param outState Bundle in which to place your saved state. 1376 * @param outPersistentState State which will be saved across reboots. 1377 * 1378 * @see #onSaveInstanceState(Bundle) 1379 * @see #onCreate 1380 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1381 * @see #onPause 1382 */ 1383 protected void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1384 onSaveInstanceState(outState); 1385 } 1386 1387 /** 1388 * Save the state of any managed dialogs. 1389 * 1390 * @param outState place to store the saved state. 1391 */ 1392 private void saveManagedDialogs(Bundle outState) { 1393 if (mManagedDialogs == null) { 1394 return; 1395 } 1396 1397 final int numDialogs = mManagedDialogs.size(); 1398 if (numDialogs == 0) { 1399 return; 1400 } 1401 1402 Bundle dialogState = new Bundle(); 1403 1404 int[] ids = new int[mManagedDialogs.size()]; 1405 1406 // save each dialog's bundle, gather the ids 1407 for (int i = 0; i < numDialogs; i++) { 1408 final int key = mManagedDialogs.keyAt(i); 1409 ids[i] = key; 1410 final ManagedDialog md = mManagedDialogs.valueAt(i); 1411 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1412 if (md.mArgs != null) { 1413 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1414 } 1415 } 1416 1417 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1418 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1419 } 1420 1421 1422 /** 1423 * Called as part of the activity lifecycle when an activity is going into 1424 * the background, but has not (yet) been killed. The counterpart to 1425 * {@link #onResume}. 1426 * 1427 * <p>When activity B is launched in front of activity A, this callback will 1428 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1429 * so be sure to not do anything lengthy here. 1430 * 1431 * <p>This callback is mostly used for saving any persistent state the 1432 * activity is editing, to present a "edit in place" model to the user and 1433 * making sure nothing is lost if there are not enough resources to start 1434 * the new activity without first killing this one. This is also a good 1435 * place to do things like stop animations and other things that consume a 1436 * noticeable amount of CPU in order to make the switch to the next activity 1437 * as fast as possible, or to close resources that are exclusive access 1438 * such as the camera. 1439 * 1440 * <p>In situations where the system needs more memory it may kill paused 1441 * processes to reclaim resources. Because of this, you should be sure 1442 * that all of your state is saved by the time you return from 1443 * this function. In general {@link #onSaveInstanceState} is used to save 1444 * per-instance state in the activity and this method is used to store 1445 * global persistent data (in content providers, files, etc.) 1446 * 1447 * <p>After receiving this call you will usually receive a following call 1448 * to {@link #onStop} (after the next activity has been resumed and 1449 * displayed), however in some cases there will be a direct call back to 1450 * {@link #onResume} without going through the stopped state. 1451 * 1452 * <p><em>Derived classes must call through to the super class's 1453 * implementation of this method. If they do not, an exception will be 1454 * thrown.</em></p> 1455 * 1456 * @see #onResume 1457 * @see #onSaveInstanceState 1458 * @see #onStop 1459 */ 1460 protected void onPause() { 1461 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1462 getApplication().dispatchActivityPaused(this); 1463 mCalled = true; 1464 } 1465 1466 /** 1467 * Called as part of the activity lifecycle when an activity is about to go 1468 * into the background as the result of user choice. For example, when the 1469 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1470 * when an incoming phone call causes the in-call Activity to be automatically 1471 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1472 * the activity being interrupted. In cases when it is invoked, this method 1473 * is called right before the activity's {@link #onPause} callback. 1474 * 1475 * <p>This callback and {@link #onUserInteraction} are intended to help 1476 * activities manage status bar notifications intelligently; specifically, 1477 * for helping activities determine the proper time to cancel a notfication. 1478 * 1479 * @see #onUserInteraction() 1480 */ 1481 protected void onUserLeaveHint() { 1482 } 1483 1484 /** 1485 * Generate a new thumbnail for this activity. This method is called before 1486 * pausing the activity, and should draw into <var>outBitmap</var> the 1487 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1488 * can use the given <var>canvas</var>, which is configured to draw into the 1489 * bitmap, for rendering if desired. 1490 * 1491 * <p>The default implementation returns fails and does not draw a thumbnail; 1492 * this will result in the platform creating its own thumbnail if needed. 1493 * 1494 * @param outBitmap The bitmap to contain the thumbnail. 1495 * @param canvas Can be used to render into the bitmap. 1496 * 1497 * @return Return true if you have drawn into the bitmap; otherwise after 1498 * you return it will be filled with a default thumbnail. 1499 * 1500 * @see #onCreateDescription 1501 * @see #onSaveInstanceState 1502 * @see #onPause 1503 */ 1504 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1505 return false; 1506 } 1507 1508 /** 1509 * Generate a new description for this activity. This method is called 1510 * before pausing the activity and can, if desired, return some textual 1511 * description of its current state to be displayed to the user. 1512 * 1513 * <p>The default implementation returns null, which will cause you to 1514 * inherit the description from the previous activity. If all activities 1515 * return null, generally the label of the top activity will be used as the 1516 * description. 1517 * 1518 * @return A description of what the user is doing. It should be short and 1519 * sweet (only a few words). 1520 * 1521 * @see #onCreateThumbnail 1522 * @see #onSaveInstanceState 1523 * @see #onPause 1524 */ 1525 @Nullable 1526 public CharSequence onCreateDescription() { 1527 return null; 1528 } 1529 1530 /** 1531 * This is called when the user is requesting an assist, to build a full 1532 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1533 * application. You can override this method to place into the bundle anything 1534 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1535 * of the assist Intent. The default implementation does nothing. 1536 * 1537 * <p>This function will be called after any global assist callbacks that had 1538 * been registered with {@link Application#registerOnProvideAssistDataListener 1539 * Application.registerOnProvideAssistDataListener}. 1540 */ 1541 public void onProvideAssistData(Bundle data) { 1542 } 1543 1544 /** 1545 * Called when you are no longer visible to the user. You will next 1546 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1547 * depending on later user activity. 1548 * 1549 * <p>Note that this method may never be called, in low memory situations 1550 * where the system does not have enough memory to keep your activity's 1551 * process running after its {@link #onPause} method is called. 1552 * 1553 * <p><em>Derived classes must call through to the super class's 1554 * implementation of this method. If they do not, an exception will be 1555 * thrown.</em></p> 1556 * 1557 * @see #onRestart 1558 * @see #onResume 1559 * @see #onSaveInstanceState 1560 * @see #onDestroy 1561 */ 1562 protected void onStop() { 1563 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1564 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1565 mActivityTransitionState.onStop(); 1566 getApplication().dispatchActivityStopped(this); 1567 mTranslucentCallback = null; 1568 mCalled = true; 1569 } 1570 1571 /** 1572 * Perform any final cleanup before an activity is destroyed. This can 1573 * happen either because the activity is finishing (someone called 1574 * {@link #finish} on it, or because the system is temporarily destroying 1575 * this instance of the activity to save space. You can distinguish 1576 * between these two scenarios with the {@link #isFinishing} method. 1577 * 1578 * <p><em>Note: do not count on this method being called as a place for 1579 * saving data! For example, if an activity is editing data in a content 1580 * provider, those edits should be committed in either {@link #onPause} or 1581 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1582 * free resources like threads that are associated with an activity, so 1583 * that a destroyed activity does not leave such things around while the 1584 * rest of its application is still running. There are situations where 1585 * the system will simply kill the activity's hosting process without 1586 * calling this method (or any others) in it, so it should not be used to 1587 * do things that are intended to remain around after the process goes 1588 * away. 1589 * 1590 * <p><em>Derived classes must call through to the super class's 1591 * implementation of this method. If they do not, an exception will be 1592 * thrown.</em></p> 1593 * 1594 * @see #onPause 1595 * @see #onStop 1596 * @see #finish 1597 * @see #isFinishing 1598 */ 1599 protected void onDestroy() { 1600 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1601 mCalled = true; 1602 1603 // dismiss any dialogs we are managing. 1604 if (mManagedDialogs != null) { 1605 final int numDialogs = mManagedDialogs.size(); 1606 for (int i = 0; i < numDialogs; i++) { 1607 final ManagedDialog md = mManagedDialogs.valueAt(i); 1608 if (md.mDialog.isShowing()) { 1609 md.mDialog.dismiss(); 1610 } 1611 } 1612 mManagedDialogs = null; 1613 } 1614 1615 // close any cursors we are managing. 1616 synchronized (mManagedCursors) { 1617 int numCursors = mManagedCursors.size(); 1618 for (int i = 0; i < numCursors; i++) { 1619 ManagedCursor c = mManagedCursors.get(i); 1620 if (c != null) { 1621 c.mCursor.close(); 1622 } 1623 } 1624 mManagedCursors.clear(); 1625 } 1626 1627 // Close any open search dialog 1628 if (mSearchManager != null) { 1629 mSearchManager.stopSearch(); 1630 } 1631 1632 getApplication().dispatchActivityDestroyed(this); 1633 } 1634 1635 /** 1636 * Report to the system that your app is now fully drawn, purely for diagnostic 1637 * purposes (calling it does not impact the visible behavior of the activity). 1638 * This is only used to help instrument application launch times, so that the 1639 * app can report when it is fully in a usable state; without this, the only thing 1640 * the system itself can determine is the point at which the activity's window 1641 * is <em>first</em> drawn and displayed. To participate in app launch time 1642 * measurement, you should always call this method after first launch (when 1643 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1644 * entirely drawn your UI and populated with all of the significant data. You 1645 * can safely call this method any time after first launch as well, in which case 1646 * it will simply be ignored. 1647 */ 1648 public void reportFullyDrawn() { 1649 if (mDoReportFullyDrawn) { 1650 mDoReportFullyDrawn = false; 1651 try { 1652 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1653 } catch (RemoteException e) { 1654 } 1655 } 1656 } 1657 1658 /** 1659 * Called by the system when the device configuration changes while your 1660 * activity is running. Note that this will <em>only</em> be called if 1661 * you have selected configurations you would like to handle with the 1662 * {@link android.R.attr#configChanges} attribute in your manifest. If 1663 * any configuration change occurs that is not selected to be reported 1664 * by that attribute, then instead of reporting it the system will stop 1665 * and restart the activity (to have it launched with the new 1666 * configuration). 1667 * 1668 * <p>At the time that this function has been called, your Resources 1669 * object will have been updated to return resource values matching the 1670 * new configuration. 1671 * 1672 * @param newConfig The new device configuration. 1673 */ 1674 public void onConfigurationChanged(Configuration newConfig) { 1675 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1676 mCalled = true; 1677 1678 mFragments.dispatchConfigurationChanged(newConfig); 1679 1680 if (mWindow != null) { 1681 // Pass the configuration changed event to the window 1682 mWindow.onConfigurationChanged(newConfig); 1683 } 1684 1685 if (mActionBar != null) { 1686 // Do this last; the action bar will need to access 1687 // view changes from above. 1688 mActionBar.onConfigurationChanged(newConfig); 1689 } 1690 } 1691 1692 /** 1693 * If this activity is being destroyed because it can not handle a 1694 * configuration parameter being changed (and thus its 1695 * {@link #onConfigurationChanged(Configuration)} method is 1696 * <em>not</em> being called), then you can use this method to discover 1697 * the set of changes that have occurred while in the process of being 1698 * destroyed. Note that there is no guarantee that these will be 1699 * accurate (other changes could have happened at any time), so you should 1700 * only use this as an optimization hint. 1701 * 1702 * @return Returns a bit field of the configuration parameters that are 1703 * changing, as defined by the {@link android.content.res.Configuration} 1704 * class. 1705 */ 1706 public int getChangingConfigurations() { 1707 return mConfigChangeFlags; 1708 } 1709 1710 /** 1711 * Retrieve the non-configuration instance data that was previously 1712 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1713 * be available from the initial {@link #onCreate} and 1714 * {@link #onStart} calls to the new instance, allowing you to extract 1715 * any useful dynamic state from the previous instance. 1716 * 1717 * <p>Note that the data you retrieve here should <em>only</em> be used 1718 * as an optimization for handling configuration changes. You should always 1719 * be able to handle getting a null pointer back, and an activity must 1720 * still be able to restore itself to its previous state (through the 1721 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1722 * function returns null. 1723 * 1724 * @return Returns the object previously returned by 1725 * {@link #onRetainNonConfigurationInstance()}. 1726 * 1727 * @deprecated Use the new {@link Fragment} API 1728 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1729 * available on older platforms through the Android compatibility package. 1730 */ 1731 @Nullable 1732 @Deprecated 1733 public Object getLastNonConfigurationInstance() { 1734 return mLastNonConfigurationInstances != null 1735 ? mLastNonConfigurationInstances.activity : null; 1736 } 1737 1738 /** 1739 * Called by the system, as part of destroying an 1740 * activity due to a configuration change, when it is known that a new 1741 * instance will immediately be created for the new configuration. You 1742 * can return any object you like here, including the activity instance 1743 * itself, which can later be retrieved by calling 1744 * {@link #getLastNonConfigurationInstance()} in the new activity 1745 * instance. 1746 * 1747 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1748 * or later, consider instead using a {@link Fragment} with 1749 * {@link Fragment#setRetainInstance(boolean) 1750 * Fragment.setRetainInstance(boolean}.</em> 1751 * 1752 * <p>This function is called purely as an optimization, and you must 1753 * not rely on it being called. When it is called, a number of guarantees 1754 * will be made to help optimize configuration switching: 1755 * <ul> 1756 * <li> The function will be called between {@link #onStop} and 1757 * {@link #onDestroy}. 1758 * <li> A new instance of the activity will <em>always</em> be immediately 1759 * created after this one's {@link #onDestroy()} is called. In particular, 1760 * <em>no</em> messages will be dispatched during this time (when the returned 1761 * object does not have an activity to be associated with). 1762 * <li> The object you return here will <em>always</em> be available from 1763 * the {@link #getLastNonConfigurationInstance()} method of the following 1764 * activity instance as described there. 1765 * </ul> 1766 * 1767 * <p>These guarantees are designed so that an activity can use this API 1768 * to propagate extensive state from the old to new activity instance, from 1769 * loaded bitmaps, to network connections, to evenly actively running 1770 * threads. Note that you should <em>not</em> propagate any data that 1771 * may change based on the configuration, including any data loaded from 1772 * resources such as strings, layouts, or drawables. 1773 * 1774 * <p>The guarantee of no message handling during the switch to the next 1775 * activity simplifies use with active objects. For example if your retained 1776 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1777 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1778 * not be called from the call here until you execute the next instance's 1779 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1780 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1781 * running in a separate thread.) 1782 * 1783 * @return Return any Object holding the desired state to propagate to the 1784 * next activity instance. 1785 * 1786 * @deprecated Use the new {@link Fragment} API 1787 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1788 * available on older platforms through the Android compatibility package. 1789 */ 1790 public Object onRetainNonConfigurationInstance() { 1791 return null; 1792 } 1793 1794 /** 1795 * Retrieve the non-configuration instance data that was previously 1796 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1797 * be available from the initial {@link #onCreate} and 1798 * {@link #onStart} calls to the new instance, allowing you to extract 1799 * any useful dynamic state from the previous instance. 1800 * 1801 * <p>Note that the data you retrieve here should <em>only</em> be used 1802 * as an optimization for handling configuration changes. You should always 1803 * be able to handle getting a null pointer back, and an activity must 1804 * still be able to restore itself to its previous state (through the 1805 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1806 * function returns null. 1807 * 1808 * @return Returns the object previously returned by 1809 * {@link #onRetainNonConfigurationChildInstances()} 1810 */ 1811 @Nullable 1812 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1813 return mLastNonConfigurationInstances != null 1814 ? mLastNonConfigurationInstances.children : null; 1815 } 1816 1817 /** 1818 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1819 * it should return either a mapping from child activity id strings to arbitrary objects, 1820 * or null. This method is intended to be used by Activity framework subclasses that control a 1821 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1822 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1823 */ 1824 @Nullable 1825 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1826 return null; 1827 } 1828 1829 NonConfigurationInstances retainNonConfigurationInstances() { 1830 Object activity = onRetainNonConfigurationInstance(); 1831 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1832 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1833 boolean retainLoaders = false; 1834 if (mAllLoaderManagers != null) { 1835 // prune out any loader managers that were already stopped and so 1836 // have nothing useful to retain. 1837 final int N = mAllLoaderManagers.size(); 1838 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 1839 for (int i=N-1; i>=0; i--) { 1840 loaders[i] = mAllLoaderManagers.valueAt(i); 1841 } 1842 for (int i=0; i<N; i++) { 1843 LoaderManagerImpl lm = loaders[i]; 1844 if (lm.mRetaining) { 1845 retainLoaders = true; 1846 } else { 1847 lm.doDestroy(); 1848 mAllLoaderManagers.remove(lm.mWho); 1849 } 1850 } 1851 } 1852 if (activity == null && children == null && fragments == null && !retainLoaders 1853 && mVoiceInteractor == null) { 1854 return null; 1855 } 1856 1857 NonConfigurationInstances nci = new NonConfigurationInstances(); 1858 nci.activity = activity; 1859 nci.children = children; 1860 nci.fragments = fragments; 1861 nci.loaders = mAllLoaderManagers; 1862 nci.voiceInteractor = mVoiceInteractor; 1863 return nci; 1864 } 1865 1866 public void onLowMemory() { 1867 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1868 mCalled = true; 1869 mFragments.dispatchLowMemory(); 1870 } 1871 1872 public void onTrimMemory(int level) { 1873 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1874 mCalled = true; 1875 mFragments.dispatchTrimMemory(level); 1876 } 1877 1878 /** 1879 * Return the FragmentManager for interacting with fragments associated 1880 * with this activity. 1881 */ 1882 public FragmentManager getFragmentManager() { 1883 return mFragments; 1884 } 1885 1886 void invalidateFragment(String who) { 1887 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1888 if (mAllLoaderManagers != null) { 1889 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 1890 if (lm != null && !lm.mRetaining) { 1891 lm.doDestroy(); 1892 mAllLoaderManagers.remove(who); 1893 } 1894 } 1895 } 1896 1897 /** 1898 * Called when a Fragment is being attached to this activity, immediately 1899 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1900 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1901 */ 1902 public void onAttachFragment(Fragment fragment) { 1903 } 1904 1905 /** 1906 * Wrapper around 1907 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1908 * that gives the resulting {@link Cursor} to call 1909 * {@link #startManagingCursor} so that the activity will manage its 1910 * lifecycle for you. 1911 * 1912 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1913 * or later, consider instead using {@link LoaderManager} instead, available 1914 * via {@link #getLoaderManager()}.</em> 1915 * 1916 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1917 * this method, because the activity will do that for you at the appropriate time. However, if 1918 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1919 * not</em> automatically close the cursor and, in that case, you must call 1920 * {@link Cursor#close()}.</p> 1921 * 1922 * @param uri The URI of the content provider to query. 1923 * @param projection List of columns to return. 1924 * @param selection SQL WHERE clause. 1925 * @param sortOrder SQL ORDER BY clause. 1926 * 1927 * @return The Cursor that was returned by query(). 1928 * 1929 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1930 * @see #startManagingCursor 1931 * @hide 1932 * 1933 * @deprecated Use {@link CursorLoader} instead. 1934 */ 1935 @Deprecated 1936 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1937 String sortOrder) { 1938 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1939 if (c != null) { 1940 startManagingCursor(c); 1941 } 1942 return c; 1943 } 1944 1945 /** 1946 * Wrapper around 1947 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1948 * that gives the resulting {@link Cursor} to call 1949 * {@link #startManagingCursor} so that the activity will manage its 1950 * lifecycle for you. 1951 * 1952 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1953 * or later, consider instead using {@link LoaderManager} instead, available 1954 * via {@link #getLoaderManager()}.</em> 1955 * 1956 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1957 * this method, because the activity will do that for you at the appropriate time. However, if 1958 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1959 * not</em> automatically close the cursor and, in that case, you must call 1960 * {@link Cursor#close()}.</p> 1961 * 1962 * @param uri The URI of the content provider to query. 1963 * @param projection List of columns to return. 1964 * @param selection SQL WHERE clause. 1965 * @param selectionArgs The arguments to selection, if any ?s are pesent 1966 * @param sortOrder SQL ORDER BY clause. 1967 * 1968 * @return The Cursor that was returned by query(). 1969 * 1970 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1971 * @see #startManagingCursor 1972 * 1973 * @deprecated Use {@link CursorLoader} instead. 1974 */ 1975 @Deprecated 1976 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1977 String[] selectionArgs, String sortOrder) { 1978 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1979 if (c != null) { 1980 startManagingCursor(c); 1981 } 1982 return c; 1983 } 1984 1985 /** 1986 * This method allows the activity to take care of managing the given 1987 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1988 * That is, when the activity is stopped it will automatically call 1989 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1990 * it will call {@link Cursor#requery} for you. When the activity is 1991 * destroyed, all managed Cursors will be closed automatically. 1992 * 1993 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1994 * or later, consider instead using {@link LoaderManager} instead, available 1995 * via {@link #getLoaderManager()}.</em> 1996 * 1997 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1998 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1999 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 2000 * <em>will not</em> automatically close the cursor and, in that case, you must call 2001 * {@link Cursor#close()}.</p> 2002 * 2003 * @param c The Cursor to be managed. 2004 * 2005 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 2006 * @see #stopManagingCursor 2007 * 2008 * @deprecated Use the new {@link android.content.CursorLoader} class with 2009 * {@link LoaderManager} instead; this is also 2010 * available on older platforms through the Android compatibility package. 2011 */ 2012 @Deprecated 2013 public void startManagingCursor(Cursor c) { 2014 synchronized (mManagedCursors) { 2015 mManagedCursors.add(new ManagedCursor(c)); 2016 } 2017 } 2018 2019 /** 2020 * Given a Cursor that was previously given to 2021 * {@link #startManagingCursor}, stop the activity's management of that 2022 * cursor. 2023 * 2024 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2025 * the system <em>will not</em> automatically close the cursor and you must call 2026 * {@link Cursor#close()}.</p> 2027 * 2028 * @param c The Cursor that was being managed. 2029 * 2030 * @see #startManagingCursor 2031 * 2032 * @deprecated Use the new {@link android.content.CursorLoader} class with 2033 * {@link LoaderManager} instead; this is also 2034 * available on older platforms through the Android compatibility package. 2035 */ 2036 @Deprecated 2037 public void stopManagingCursor(Cursor c) { 2038 synchronized (mManagedCursors) { 2039 final int N = mManagedCursors.size(); 2040 for (int i=0; i<N; i++) { 2041 ManagedCursor mc = mManagedCursors.get(i); 2042 if (mc.mCursor == c) { 2043 mManagedCursors.remove(i); 2044 break; 2045 } 2046 } 2047 } 2048 } 2049 2050 /** 2051 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2052 * this is a no-op. 2053 * @hide 2054 */ 2055 @Deprecated 2056 public void setPersistent(boolean isPersistent) { 2057 } 2058 2059 /** 2060 * Finds a view that was identified by the id attribute from the XML that 2061 * was processed in {@link #onCreate}. 2062 * 2063 * @return The view if found or null otherwise. 2064 */ 2065 public View findViewById(int id) { 2066 return getWindow().findViewById(id); 2067 } 2068 2069 /** 2070 * Retrieve a reference to this activity's ActionBar. 2071 * 2072 * @return The Activity's ActionBar, or null if it does not have one. 2073 */ 2074 @Nullable 2075 public ActionBar getActionBar() { 2076 initWindowDecorActionBar(); 2077 return mActionBar; 2078 } 2079 2080 /** 2081 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2082 * Activity window. 2083 * 2084 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2085 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2086 * a traditional window decor action bar. The toolbar's menu will be populated with the 2087 * Activity's options menu and the navigation button will be wired through the standard 2088 * {@link android.R.id#home home} menu select action.</p> 2089 * 2090 * <p>In order to use a Toolbar within the Activity's window content the application 2091 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2092 * 2093 * @param toolbar Toolbar to set as the Activity's action bar 2094 */ 2095 public void setActionBar(@Nullable Toolbar toolbar) { 2096 if (getActionBar() instanceof WindowDecorActionBar) { 2097 throw new IllegalStateException("This Activity already has an action bar supplied " + 2098 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2099 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2100 } 2101 ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); 2102 mActionBar = tbab; 2103 mWindow.setCallback(tbab.getWrappedWindowCallback()); 2104 mActionBar.invalidateOptionsMenu(); 2105 } 2106 2107 /** 2108 * Creates a new ActionBar, locates the inflated ActionBarView, 2109 * initializes the ActionBar with the view, and sets mActionBar. 2110 */ 2111 private void initWindowDecorActionBar() { 2112 Window window = getWindow(); 2113 2114 // Initializing the window decor can change window feature flags. 2115 // Make sure that we have the correct set before performing the test below. 2116 window.getDecorView(); 2117 2118 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2119 return; 2120 } 2121 2122 mActionBar = new WindowDecorActionBar(this); 2123 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2124 2125 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2126 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2127 } 2128 2129 /** 2130 * Set the activity content from a layout resource. The resource will be 2131 * inflated, adding all top-level views to the activity. 2132 * 2133 * @param layoutResID Resource ID to be inflated. 2134 * 2135 * @see #setContentView(android.view.View) 2136 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2137 */ 2138 public void setContentView(int layoutResID) { 2139 getWindow().setContentView(layoutResID); 2140 initWindowDecorActionBar(); 2141 } 2142 2143 /** 2144 * Set the activity content to an explicit view. This view is placed 2145 * directly into the activity's view hierarchy. It can itself be a complex 2146 * view hierarchy. When calling this method, the layout parameters of the 2147 * specified view are ignored. Both the width and the height of the view are 2148 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2149 * your own layout parameters, invoke 2150 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2151 * instead. 2152 * 2153 * @param view The desired content to display. 2154 * 2155 * @see #setContentView(int) 2156 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2157 */ 2158 public void setContentView(View view) { 2159 getWindow().setContentView(view); 2160 initWindowDecorActionBar(); 2161 } 2162 2163 /** 2164 * Set the activity content to an explicit view. This view is placed 2165 * directly into the activity's view hierarchy. It can itself be a complex 2166 * view hierarchy. 2167 * 2168 * @param view The desired content to display. 2169 * @param params Layout parameters for the view. 2170 * 2171 * @see #setContentView(android.view.View) 2172 * @see #setContentView(int) 2173 */ 2174 public void setContentView(View view, ViewGroup.LayoutParams params) { 2175 getWindow().setContentView(view, params); 2176 initWindowDecorActionBar(); 2177 } 2178 2179 /** 2180 * Add an additional content view to the activity. Added after any existing 2181 * ones in the activity -- existing views are NOT removed. 2182 * 2183 * @param view The desired content to display. 2184 * @param params Layout parameters for the view. 2185 */ 2186 public void addContentView(View view, ViewGroup.LayoutParams params) { 2187 getWindow().addContentView(view, params); 2188 initWindowDecorActionBar(); 2189 } 2190 2191 /** 2192 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2193 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2194 * 2195 * <p>This method will return non-null after content has been initialized (e.g. by using 2196 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2197 * 2198 * @return This window's content TransitionManager or null if none is set. 2199 */ 2200 public TransitionManager getContentTransitionManager() { 2201 return getWindow().getTransitionManager(); 2202 } 2203 2204 /** 2205 * Set the {@link TransitionManager} to use for default transitions in this window. 2206 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2207 * 2208 * @param tm The TransitionManager to use for scene changes. 2209 */ 2210 public void setContentTransitionManager(TransitionManager tm) { 2211 getWindow().setTransitionManager(tm); 2212 } 2213 2214 /** 2215 * Retrieve the {@link Scene} representing this window's current content. 2216 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2217 * 2218 * <p>This method will return null if the current content is not represented by a Scene.</p> 2219 * 2220 * @return Current Scene being shown or null 2221 */ 2222 public Scene getContentScene() { 2223 return getWindow().getContentScene(); 2224 } 2225 2226 /** 2227 * Sets whether this activity is finished when touched outside its window's 2228 * bounds. 2229 */ 2230 public void setFinishOnTouchOutside(boolean finish) { 2231 mWindow.setCloseOnTouchOutside(finish); 2232 } 2233 2234 /** @hide */ 2235 @IntDef({ 2236 DEFAULT_KEYS_DISABLE, 2237 DEFAULT_KEYS_DIALER, 2238 DEFAULT_KEYS_SHORTCUT, 2239 DEFAULT_KEYS_SEARCH_LOCAL, 2240 DEFAULT_KEYS_SEARCH_GLOBAL}) 2241 @Retention(RetentionPolicy.SOURCE) 2242 @interface DefaultKeyMode {} 2243 2244 /** 2245 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2246 * keys. 2247 * 2248 * @see #setDefaultKeyMode 2249 */ 2250 static public final int DEFAULT_KEYS_DISABLE = 0; 2251 /** 2252 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2253 * key handling. 2254 * 2255 * @see #setDefaultKeyMode 2256 */ 2257 static public final int DEFAULT_KEYS_DIALER = 1; 2258 /** 2259 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2260 * default key handling. 2261 * 2262 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2263 * 2264 * @see #setDefaultKeyMode 2265 */ 2266 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2267 /** 2268 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2269 * will start an application-defined search. (If the application or activity does not 2270 * actually define a search, the the keys will be ignored.) 2271 * 2272 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2273 * 2274 * @see #setDefaultKeyMode 2275 */ 2276 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2277 2278 /** 2279 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2280 * will start a global search (typically web search, but some platforms may define alternate 2281 * methods for global search) 2282 * 2283 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2284 * 2285 * @see #setDefaultKeyMode 2286 */ 2287 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2288 2289 /** 2290 * Select the default key handling for this activity. This controls what 2291 * will happen to key events that are not otherwise handled. The default 2292 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2293 * floor. Other modes allow you to launch the dialer 2294 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2295 * menu without requiring the menu key be held down 2296 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2297 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2298 * 2299 * <p>Note that the mode selected here does not impact the default 2300 * handling of system keys, such as the "back" and "menu" keys, and your 2301 * activity and its views always get a first chance to receive and handle 2302 * all application keys. 2303 * 2304 * @param mode The desired default key mode constant. 2305 * 2306 * @see #DEFAULT_KEYS_DISABLE 2307 * @see #DEFAULT_KEYS_DIALER 2308 * @see #DEFAULT_KEYS_SHORTCUT 2309 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2310 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2311 * @see #onKeyDown 2312 */ 2313 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2314 mDefaultKeyMode = mode; 2315 2316 // Some modes use a SpannableStringBuilder to track & dispatch input events 2317 // This list must remain in sync with the switch in onKeyDown() 2318 switch (mode) { 2319 case DEFAULT_KEYS_DISABLE: 2320 case DEFAULT_KEYS_SHORTCUT: 2321 mDefaultKeySsb = null; // not used in these modes 2322 break; 2323 case DEFAULT_KEYS_DIALER: 2324 case DEFAULT_KEYS_SEARCH_LOCAL: 2325 case DEFAULT_KEYS_SEARCH_GLOBAL: 2326 mDefaultKeySsb = new SpannableStringBuilder(); 2327 Selection.setSelection(mDefaultKeySsb,0); 2328 break; 2329 default: 2330 throw new IllegalArgumentException(); 2331 } 2332 } 2333 2334 /** 2335 * Called when a key was pressed down and not handled by any of the views 2336 * inside of the activity. So, for example, key presses while the cursor 2337 * is inside a TextView will not trigger the event (unless it is a navigation 2338 * to another object) because TextView handles its own key presses. 2339 * 2340 * <p>If the focused view didn't want this event, this method is called. 2341 * 2342 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2343 * by calling {@link #onBackPressed()}, though the behavior varies based 2344 * on the application compatibility mode: for 2345 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2346 * it will set up the dispatch to call {@link #onKeyUp} where the action 2347 * will be performed; for earlier applications, it will perform the 2348 * action immediately in on-down, as those versions of the platform 2349 * behaved. 2350 * 2351 * <p>Other additional default key handling may be performed 2352 * if configured with {@link #setDefaultKeyMode}. 2353 * 2354 * @return Return <code>true</code> to prevent this event from being propagated 2355 * further, or <code>false</code> to indicate that you have not handled 2356 * this event and it should continue to be propagated. 2357 * @see #onKeyUp 2358 * @see android.view.KeyEvent 2359 */ 2360 public boolean onKeyDown(int keyCode, KeyEvent event) { 2361 if (keyCode == KeyEvent.KEYCODE_BACK) { 2362 if (getApplicationInfo().targetSdkVersion 2363 >= Build.VERSION_CODES.ECLAIR) { 2364 event.startTracking(); 2365 } else { 2366 onBackPressed(); 2367 } 2368 return true; 2369 } 2370 2371 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2372 return false; 2373 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2374 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2375 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2376 return true; 2377 } 2378 return false; 2379 } else { 2380 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2381 boolean clearSpannable = false; 2382 boolean handled; 2383 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2384 clearSpannable = true; 2385 handled = false; 2386 } else { 2387 handled = TextKeyListener.getInstance().onKeyDown( 2388 null, mDefaultKeySsb, keyCode, event); 2389 if (handled && mDefaultKeySsb.length() > 0) { 2390 // something useable has been typed - dispatch it now. 2391 2392 final String str = mDefaultKeySsb.toString(); 2393 clearSpannable = true; 2394 2395 switch (mDefaultKeyMode) { 2396 case DEFAULT_KEYS_DIALER: 2397 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2398 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2399 startActivity(intent); 2400 break; 2401 case DEFAULT_KEYS_SEARCH_LOCAL: 2402 startSearch(str, false, null, false); 2403 break; 2404 case DEFAULT_KEYS_SEARCH_GLOBAL: 2405 startSearch(str, false, null, true); 2406 break; 2407 } 2408 } 2409 } 2410 if (clearSpannable) { 2411 mDefaultKeySsb.clear(); 2412 mDefaultKeySsb.clearSpans(); 2413 Selection.setSelection(mDefaultKeySsb,0); 2414 } 2415 return handled; 2416 } 2417 } 2418 2419 /** 2420 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2421 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2422 * the event). 2423 */ 2424 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2425 return false; 2426 } 2427 2428 /** 2429 * Called when a key was released and not handled by any of the views 2430 * inside of the activity. So, for example, key presses while the cursor 2431 * is inside a TextView will not trigger the event (unless it is a navigation 2432 * to another object) because TextView handles its own key presses. 2433 * 2434 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2435 * and go back. 2436 * 2437 * @return Return <code>true</code> to prevent this event from being propagated 2438 * further, or <code>false</code> to indicate that you have not handled 2439 * this event and it should continue to be propagated. 2440 * @see #onKeyDown 2441 * @see KeyEvent 2442 */ 2443 public boolean onKeyUp(int keyCode, KeyEvent event) { 2444 if (getApplicationInfo().targetSdkVersion 2445 >= Build.VERSION_CODES.ECLAIR) { 2446 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2447 && !event.isCanceled()) { 2448 onBackPressed(); 2449 return true; 2450 } 2451 } 2452 return false; 2453 } 2454 2455 /** 2456 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2457 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2458 * the event). 2459 */ 2460 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2461 return false; 2462 } 2463 2464 /** 2465 * Called when the activity has detected the user's press of the back 2466 * key. The default implementation simply finishes the current activity, 2467 * but you can override this to do whatever you want. 2468 */ 2469 public void onBackPressed() { 2470 if (mActionBar != null && mActionBar.collapseActionView()) { 2471 return; 2472 } 2473 2474 if (!mFragments.popBackStackImmediate()) { 2475 finishAfterTransition(); 2476 } 2477 } 2478 2479 /** 2480 * Called when a key shortcut event is not handled by any of the views in the Activity. 2481 * Override this method to implement global key shortcuts for the Activity. 2482 * Key shortcuts can also be implemented by setting the 2483 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2484 * 2485 * @param keyCode The value in event.getKeyCode(). 2486 * @param event Description of the key event. 2487 * @return True if the key shortcut was handled. 2488 */ 2489 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2490 return false; 2491 } 2492 2493 /** 2494 * Called when a touch screen event was not handled by any of the views 2495 * under it. This is most useful to process touch events that happen 2496 * outside of your window bounds, where there is no view to receive it. 2497 * 2498 * @param event The touch screen event being processed. 2499 * 2500 * @return Return true if you have consumed the event, false if you haven't. 2501 * The default implementation always returns false. 2502 */ 2503 public boolean onTouchEvent(MotionEvent event) { 2504 if (mWindow.shouldCloseOnTouch(this, event)) { 2505 finish(); 2506 return true; 2507 } 2508 2509 return false; 2510 } 2511 2512 /** 2513 * Called when the trackball was moved and not handled by any of the 2514 * views inside of the activity. So, for example, if the trackball moves 2515 * while focus is on a button, you will receive a call here because 2516 * buttons do not normally do anything with trackball events. The call 2517 * here happens <em>before</em> trackball movements are converted to 2518 * DPAD key events, which then get sent back to the view hierarchy, and 2519 * will be processed at the point for things like focus navigation. 2520 * 2521 * @param event The trackball event being processed. 2522 * 2523 * @return Return true if you have consumed the event, false if you haven't. 2524 * The default implementation always returns false. 2525 */ 2526 public boolean onTrackballEvent(MotionEvent event) { 2527 return false; 2528 } 2529 2530 /** 2531 * Called when a generic motion event was not handled by any of the 2532 * views inside of the activity. 2533 * <p> 2534 * Generic motion events describe joystick movements, mouse hovers, track pad 2535 * touches, scroll wheel movements and other input events. The 2536 * {@link MotionEvent#getSource() source} of the motion event specifies 2537 * the class of input that was received. Implementations of this method 2538 * must examine the bits in the source before processing the event. 2539 * The following code example shows how this is done. 2540 * </p><p> 2541 * Generic motion events with source class 2542 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2543 * are delivered to the view under the pointer. All other generic motion events are 2544 * delivered to the focused view. 2545 * </p><p> 2546 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2547 * handle this event. 2548 * </p> 2549 * 2550 * @param event The generic motion event being processed. 2551 * 2552 * @return Return true if you have consumed the event, false if you haven't. 2553 * The default implementation always returns false. 2554 */ 2555 public boolean onGenericMotionEvent(MotionEvent event) { 2556 return false; 2557 } 2558 2559 /** 2560 * Called whenever a key, touch, or trackball event is dispatched to the 2561 * activity. Implement this method if you wish to know that the user has 2562 * interacted with the device in some way while your activity is running. 2563 * This callback and {@link #onUserLeaveHint} are intended to help 2564 * activities manage status bar notifications intelligently; specifically, 2565 * for helping activities determine the proper time to cancel a notfication. 2566 * 2567 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2568 * be accompanied by calls to {@link #onUserInteraction}. This 2569 * ensures that your activity will be told of relevant user activity such 2570 * as pulling down the notification pane and touching an item there. 2571 * 2572 * <p>Note that this callback will be invoked for the touch down action 2573 * that begins a touch gesture, but may not be invoked for the touch-moved 2574 * and touch-up actions that follow. 2575 * 2576 * @see #onUserLeaveHint() 2577 */ 2578 public void onUserInteraction() { 2579 } 2580 2581 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2582 // Update window manager if: we have a view, that view is 2583 // attached to its parent (which will be a RootView), and 2584 // this activity is not embedded. 2585 if (mParent == null) { 2586 View decor = mDecor; 2587 if (decor != null && decor.getParent() != null) { 2588 getWindowManager().updateViewLayout(decor, params); 2589 } 2590 } 2591 } 2592 2593 public void onContentChanged() { 2594 } 2595 2596 /** 2597 * Called when the current {@link Window} of the activity gains or loses 2598 * focus. This is the best indicator of whether this activity is visible 2599 * to the user. The default implementation clears the key tracking 2600 * state, so should always be called. 2601 * 2602 * <p>Note that this provides information about global focus state, which 2603 * is managed independently of activity lifecycles. As such, while focus 2604 * changes will generally have some relation to lifecycle changes (an 2605 * activity that is stopped will not generally get window focus), you 2606 * should not rely on any particular order between the callbacks here and 2607 * those in the other lifecycle methods such as {@link #onResume}. 2608 * 2609 * <p>As a general rule, however, a resumed activity will have window 2610 * focus... unless it has displayed other dialogs or popups that take 2611 * input focus, in which case the activity itself will not have focus 2612 * when the other windows have it. Likewise, the system may display 2613 * system-level windows (such as the status bar notification panel or 2614 * a system alert) which will temporarily take window input focus without 2615 * pausing the foreground activity. 2616 * 2617 * @param hasFocus Whether the window of this activity has focus. 2618 * 2619 * @see #hasWindowFocus() 2620 * @see #onResume 2621 * @see View#onWindowFocusChanged(boolean) 2622 */ 2623 public void onWindowFocusChanged(boolean hasFocus) { 2624 } 2625 2626 /** 2627 * Called when the main window associated with the activity has been 2628 * attached to the window manager. 2629 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2630 * for more information. 2631 * @see View#onAttachedToWindow 2632 */ 2633 public void onAttachedToWindow() { 2634 } 2635 2636 /** 2637 * Called when the main window associated with the activity has been 2638 * detached from the window manager. 2639 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2640 * for more information. 2641 * @see View#onDetachedFromWindow 2642 */ 2643 public void onDetachedFromWindow() { 2644 } 2645 2646 /** 2647 * Returns true if this activity's <em>main</em> window currently has window focus. 2648 * Note that this is not the same as the view itself having focus. 2649 * 2650 * @return True if this activity's main window currently has window focus. 2651 * 2652 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2653 */ 2654 public boolean hasWindowFocus() { 2655 Window w = getWindow(); 2656 if (w != null) { 2657 View d = w.getDecorView(); 2658 if (d != null) { 2659 return d.hasWindowFocus(); 2660 } 2661 } 2662 return false; 2663 } 2664 2665 /** 2666 * Called when the main window associated with the activity has been dismissed. 2667 * @hide 2668 */ 2669 @Override 2670 public void onWindowDismissed() { 2671 finish(); 2672 } 2673 2674 /** 2675 * Called to process key events. You can override this to intercept all 2676 * key events before they are dispatched to the window. Be sure to call 2677 * this implementation for key events that should be handled normally. 2678 * 2679 * @param event The key event. 2680 * 2681 * @return boolean Return true if this event was consumed. 2682 */ 2683 public boolean dispatchKeyEvent(KeyEvent event) { 2684 onUserInteraction(); 2685 2686 // Let action bars open menus in response to the menu key prioritized over 2687 // the window handling it 2688 if (event.getKeyCode() == KeyEvent.KEYCODE_MENU && 2689 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2690 return true; 2691 } 2692 2693 Window win = getWindow(); 2694 if (win.superDispatchKeyEvent(event)) { 2695 return true; 2696 } 2697 View decor = mDecor; 2698 if (decor == null) decor = win.getDecorView(); 2699 return event.dispatch(this, decor != null 2700 ? decor.getKeyDispatcherState() : null, this); 2701 } 2702 2703 /** 2704 * Called to process a key shortcut event. 2705 * You can override this to intercept all key shortcut events before they are 2706 * dispatched to the window. Be sure to call this implementation for key shortcut 2707 * events that should be handled normally. 2708 * 2709 * @param event The key shortcut event. 2710 * @return True if this event was consumed. 2711 */ 2712 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2713 onUserInteraction(); 2714 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2715 return true; 2716 } 2717 return onKeyShortcut(event.getKeyCode(), event); 2718 } 2719 2720 /** 2721 * Called to process touch screen events. You can override this to 2722 * intercept all touch screen events before they are dispatched to the 2723 * window. Be sure to call this implementation for touch screen events 2724 * that should be handled normally. 2725 * 2726 * @param ev The touch screen event. 2727 * 2728 * @return boolean Return true if this event was consumed. 2729 */ 2730 public boolean dispatchTouchEvent(MotionEvent ev) { 2731 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2732 onUserInteraction(); 2733 } 2734 if (getWindow().superDispatchTouchEvent(ev)) { 2735 return true; 2736 } 2737 return onTouchEvent(ev); 2738 } 2739 2740 /** 2741 * Called to process trackball events. You can override this to 2742 * intercept all trackball events before they are dispatched to the 2743 * window. Be sure to call this implementation for trackball events 2744 * that should be handled normally. 2745 * 2746 * @param ev The trackball event. 2747 * 2748 * @return boolean Return true if this event was consumed. 2749 */ 2750 public boolean dispatchTrackballEvent(MotionEvent ev) { 2751 onUserInteraction(); 2752 if (getWindow().superDispatchTrackballEvent(ev)) { 2753 return true; 2754 } 2755 return onTrackballEvent(ev); 2756 } 2757 2758 /** 2759 * Called to process generic motion events. You can override this to 2760 * intercept all generic motion events before they are dispatched to the 2761 * window. Be sure to call this implementation for generic motion events 2762 * that should be handled normally. 2763 * 2764 * @param ev The generic motion event. 2765 * 2766 * @return boolean Return true if this event was consumed. 2767 */ 2768 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2769 onUserInteraction(); 2770 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2771 return true; 2772 } 2773 return onGenericMotionEvent(ev); 2774 } 2775 2776 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2777 event.setClassName(getClass().getName()); 2778 event.setPackageName(getPackageName()); 2779 2780 LayoutParams params = getWindow().getAttributes(); 2781 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2782 (params.height == LayoutParams.MATCH_PARENT); 2783 event.setFullScreen(isFullScreen); 2784 2785 CharSequence title = getTitle(); 2786 if (!TextUtils.isEmpty(title)) { 2787 event.getText().add(title); 2788 } 2789 2790 return true; 2791 } 2792 2793 /** 2794 * Default implementation of 2795 * {@link android.view.Window.Callback#onCreatePanelView} 2796 * for activities. This 2797 * simply returns null so that all panel sub-windows will have the default 2798 * menu behavior. 2799 */ 2800 @Nullable 2801 public View onCreatePanelView(int featureId) { 2802 return null; 2803 } 2804 2805 /** 2806 * Default implementation of 2807 * {@link android.view.Window.Callback#onCreatePanelMenu} 2808 * for activities. This calls through to the new 2809 * {@link #onCreateOptionsMenu} method for the 2810 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2811 * so that subclasses of Activity don't need to deal with feature codes. 2812 */ 2813 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2814 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2815 boolean show = onCreateOptionsMenu(menu); 2816 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2817 return show; 2818 } 2819 return false; 2820 } 2821 2822 /** 2823 * Default implementation of 2824 * {@link android.view.Window.Callback#onPreparePanel} 2825 * for activities. This 2826 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2827 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2828 * panel, so that subclasses of 2829 * Activity don't need to deal with feature codes. 2830 */ 2831 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2832 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2833 boolean goforit = onPrepareOptionsMenu(menu); 2834 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2835 return goforit; 2836 } 2837 return true; 2838 } 2839 2840 /** 2841 * {@inheritDoc} 2842 * 2843 * @return The default implementation returns true. 2844 */ 2845 public boolean onMenuOpened(int featureId, Menu menu) { 2846 if (featureId == Window.FEATURE_ACTION_BAR) { 2847 initWindowDecorActionBar(); 2848 if (mActionBar != null) { 2849 mActionBar.dispatchMenuVisibilityChanged(true); 2850 } else { 2851 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2852 } 2853 } 2854 return true; 2855 } 2856 2857 /** 2858 * Default implementation of 2859 * {@link android.view.Window.Callback#onMenuItemSelected} 2860 * for activities. This calls through to the new 2861 * {@link #onOptionsItemSelected} method for the 2862 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2863 * panel, so that subclasses of 2864 * Activity don't need to deal with feature codes. 2865 */ 2866 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2867 CharSequence titleCondensed = item.getTitleCondensed(); 2868 2869 switch (featureId) { 2870 case Window.FEATURE_OPTIONS_PANEL: 2871 // Put event logging here so it gets called even if subclass 2872 // doesn't call through to superclass's implmeentation of each 2873 // of these methods below 2874 if(titleCondensed != null) { 2875 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 2876 } 2877 if (onOptionsItemSelected(item)) { 2878 return true; 2879 } 2880 if (mFragments.dispatchOptionsItemSelected(item)) { 2881 return true; 2882 } 2883 if (item.getItemId() == android.R.id.home && mActionBar != null && 2884 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 2885 if (mParent == null) { 2886 return onNavigateUp(); 2887 } else { 2888 return mParent.onNavigateUpFromChild(this); 2889 } 2890 } 2891 return false; 2892 2893 case Window.FEATURE_CONTEXT_MENU: 2894 if(titleCondensed != null) { 2895 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 2896 } 2897 if (onContextItemSelected(item)) { 2898 return true; 2899 } 2900 return mFragments.dispatchContextItemSelected(item); 2901 2902 default: 2903 return false; 2904 } 2905 } 2906 2907 /** 2908 * Default implementation of 2909 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2910 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2911 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2912 * so that subclasses of Activity don't need to deal with feature codes. 2913 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2914 * {@link #onContextMenuClosed(Menu)} will be called. 2915 */ 2916 public void onPanelClosed(int featureId, Menu menu) { 2917 switch (featureId) { 2918 case Window.FEATURE_OPTIONS_PANEL: 2919 mFragments.dispatchOptionsMenuClosed(menu); 2920 onOptionsMenuClosed(menu); 2921 break; 2922 2923 case Window.FEATURE_CONTEXT_MENU: 2924 onContextMenuClosed(menu); 2925 break; 2926 2927 case Window.FEATURE_ACTION_BAR: 2928 initWindowDecorActionBar(); 2929 mActionBar.dispatchMenuVisibilityChanged(false); 2930 break; 2931 } 2932 } 2933 2934 /** 2935 * Declare that the options menu has changed, so should be recreated. 2936 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2937 * time it needs to be displayed. 2938 */ 2939 public void invalidateOptionsMenu() { 2940 if (mActionBar == null || !mActionBar.invalidateOptionsMenu()) { 2941 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2942 } 2943 } 2944 2945 /** 2946 * Initialize the contents of the Activity's standard options menu. You 2947 * should place your menu items in to <var>menu</var>. 2948 * 2949 * <p>This is only called once, the first time the options menu is 2950 * displayed. To update the menu every time it is displayed, see 2951 * {@link #onPrepareOptionsMenu}. 2952 * 2953 * <p>The default implementation populates the menu with standard system 2954 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2955 * they will be correctly ordered with application-defined menu items. 2956 * Deriving classes should always call through to the base implementation. 2957 * 2958 * <p>You can safely hold on to <var>menu</var> (and any items created 2959 * from it), making modifications to it as desired, until the next 2960 * time onCreateOptionsMenu() is called. 2961 * 2962 * <p>When you add items to the menu, you can implement the Activity's 2963 * {@link #onOptionsItemSelected} method to handle them there. 2964 * 2965 * @param menu The options menu in which you place your items. 2966 * 2967 * @return You must return true for the menu to be displayed; 2968 * if you return false it will not be shown. 2969 * 2970 * @see #onPrepareOptionsMenu 2971 * @see #onOptionsItemSelected 2972 */ 2973 public boolean onCreateOptionsMenu(Menu menu) { 2974 if (mParent != null) { 2975 return mParent.onCreateOptionsMenu(menu); 2976 } 2977 return true; 2978 } 2979 2980 /** 2981 * Prepare the Screen's standard options menu to be displayed. This is 2982 * called right before the menu is shown, every time it is shown. You can 2983 * use this method to efficiently enable/disable items or otherwise 2984 * dynamically modify the contents. 2985 * 2986 * <p>The default implementation updates the system menu items based on the 2987 * activity's state. Deriving classes should always call through to the 2988 * base class implementation. 2989 * 2990 * @param menu The options menu as last shown or first initialized by 2991 * onCreateOptionsMenu(). 2992 * 2993 * @return You must return true for the menu to be displayed; 2994 * if you return false it will not be shown. 2995 * 2996 * @see #onCreateOptionsMenu 2997 */ 2998 public boolean onPrepareOptionsMenu(Menu menu) { 2999 if (mParent != null) { 3000 return mParent.onPrepareOptionsMenu(menu); 3001 } 3002 return true; 3003 } 3004 3005 /** 3006 * This hook is called whenever an item in your options menu is selected. 3007 * The default implementation simply returns false to have the normal 3008 * processing happen (calling the item's Runnable or sending a message to 3009 * its Handler as appropriate). You can use this method for any items 3010 * for which you would like to do processing without those other 3011 * facilities. 3012 * 3013 * <p>Derived classes should call through to the base class for it to 3014 * perform the default menu handling.</p> 3015 * 3016 * @param item The menu item that was selected. 3017 * 3018 * @return boolean Return false to allow normal menu processing to 3019 * proceed, true to consume it here. 3020 * 3021 * @see #onCreateOptionsMenu 3022 */ 3023 public boolean onOptionsItemSelected(MenuItem item) { 3024 if (mParent != null) { 3025 return mParent.onOptionsItemSelected(item); 3026 } 3027 return false; 3028 } 3029 3030 /** 3031 * This method is called whenever the user chooses to navigate Up within your application's 3032 * activity hierarchy from the action bar. 3033 * 3034 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3035 * was specified in the manifest for this activity or an activity-alias to it, 3036 * default Up navigation will be handled automatically. If any activity 3037 * along the parent chain requires extra Intent arguments, the Activity subclass 3038 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3039 * to supply those arguments.</p> 3040 * 3041 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3042 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3043 * from the design guide for more information about navigating within your app.</p> 3044 * 3045 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3046 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3047 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3048 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3049 * 3050 * @return true if Up navigation completed successfully and this Activity was finished, 3051 * false otherwise. 3052 */ 3053 public boolean onNavigateUp() { 3054 // Automatically handle hierarchical Up navigation if the proper 3055 // metadata is available. 3056 Intent upIntent = getParentActivityIntent(); 3057 if (upIntent != null) { 3058 if (mActivityInfo.taskAffinity == null) { 3059 // Activities with a null affinity are special; they really shouldn't 3060 // specify a parent activity intent in the first place. Just finish 3061 // the current activity and call it a day. 3062 finish(); 3063 } else if (shouldUpRecreateTask(upIntent)) { 3064 TaskStackBuilder b = TaskStackBuilder.create(this); 3065 onCreateNavigateUpTaskStack(b); 3066 onPrepareNavigateUpTaskStack(b); 3067 b.startActivities(); 3068 3069 // We can't finishAffinity if we have a result. 3070 // Fall back and simply finish the current activity instead. 3071 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3072 // Tell the developer what's going on to avoid hair-pulling. 3073 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3074 finish(); 3075 } else { 3076 finishAffinity(); 3077 } 3078 } else { 3079 navigateUpTo(upIntent); 3080 } 3081 return true; 3082 } 3083 return false; 3084 } 3085 3086 /** 3087 * This is called when a child activity of this one attempts to navigate up. 3088 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3089 * 3090 * @param child The activity making the call. 3091 */ 3092 public boolean onNavigateUpFromChild(Activity child) { 3093 return onNavigateUp(); 3094 } 3095 3096 /** 3097 * Define the synthetic task stack that will be generated during Up navigation from 3098 * a different task. 3099 * 3100 * <p>The default implementation of this method adds the parent chain of this activity 3101 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3102 * may choose to override this method to construct the desired task stack in a different 3103 * way.</p> 3104 * 3105 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3106 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3107 * returned by {@link #getParentActivityIntent()}.</p> 3108 * 3109 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3110 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3111 * 3112 * @param builder An empty TaskStackBuilder - the application should add intents representing 3113 * the desired task stack 3114 */ 3115 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3116 builder.addParentStack(this); 3117 } 3118 3119 /** 3120 * Prepare the synthetic task stack that will be generated during Up navigation 3121 * from a different task. 3122 * 3123 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3124 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3125 * If any extra data should be added to these intents before launching the new task, 3126 * the application should override this method and add that data here.</p> 3127 * 3128 * @param builder A TaskStackBuilder that has been populated with Intents by 3129 * onCreateNavigateUpTaskStack. 3130 */ 3131 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3132 } 3133 3134 /** 3135 * This hook is called whenever the options menu is being closed (either by the user canceling 3136 * the menu with the back/menu button, or when an item is selected). 3137 * 3138 * @param menu The options menu as last shown or first initialized by 3139 * onCreateOptionsMenu(). 3140 */ 3141 public void onOptionsMenuClosed(Menu menu) { 3142 if (mParent != null) { 3143 mParent.onOptionsMenuClosed(menu); 3144 } 3145 } 3146 3147 /** 3148 * Programmatically opens the options menu. If the options menu is already 3149 * open, this method does nothing. 3150 */ 3151 public void openOptionsMenu() { 3152 if (mActionBar == null || !mActionBar.openOptionsMenu()) { 3153 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3154 } 3155 } 3156 3157 /** 3158 * Progammatically closes the options menu. If the options menu is already 3159 * closed, this method does nothing. 3160 */ 3161 public void closeOptionsMenu() { 3162 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3163 } 3164 3165 /** 3166 * Called when a context menu for the {@code view} is about to be shown. 3167 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3168 * time the context menu is about to be shown and should be populated for 3169 * the view (or item inside the view for {@link AdapterView} subclasses, 3170 * this can be found in the {@code menuInfo})). 3171 * <p> 3172 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3173 * item has been selected. 3174 * <p> 3175 * It is not safe to hold onto the context menu after this method returns. 3176 * 3177 */ 3178 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3179 } 3180 3181 /** 3182 * Registers a context menu to be shown for the given view (multiple views 3183 * can show the context menu). This method will set the 3184 * {@link OnCreateContextMenuListener} on the view to this activity, so 3185 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3186 * called when it is time to show the context menu. 3187 * 3188 * @see #unregisterForContextMenu(View) 3189 * @param view The view that should show a context menu. 3190 */ 3191 public void registerForContextMenu(View view) { 3192 view.setOnCreateContextMenuListener(this); 3193 } 3194 3195 /** 3196 * Prevents a context menu to be shown for the given view. This method will remove the 3197 * {@link OnCreateContextMenuListener} on the view. 3198 * 3199 * @see #registerForContextMenu(View) 3200 * @param view The view that should stop showing a context menu. 3201 */ 3202 public void unregisterForContextMenu(View view) { 3203 view.setOnCreateContextMenuListener(null); 3204 } 3205 3206 /** 3207 * Programmatically opens the context menu for a particular {@code view}. 3208 * The {@code view} should have been added via 3209 * {@link #registerForContextMenu(View)}. 3210 * 3211 * @param view The view to show the context menu for. 3212 */ 3213 public void openContextMenu(View view) { 3214 view.showContextMenu(); 3215 } 3216 3217 /** 3218 * Programmatically closes the most recently opened context menu, if showing. 3219 */ 3220 public void closeContextMenu() { 3221 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3222 } 3223 3224 /** 3225 * This hook is called whenever an item in a context menu is selected. The 3226 * default implementation simply returns false to have the normal processing 3227 * happen (calling the item's Runnable or sending a message to its Handler 3228 * as appropriate). You can use this method for any items for which you 3229 * would like to do processing without those other facilities. 3230 * <p> 3231 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3232 * View that added this menu item. 3233 * <p> 3234 * Derived classes should call through to the base class for it to perform 3235 * the default menu handling. 3236 * 3237 * @param item The context menu item that was selected. 3238 * @return boolean Return false to allow normal context menu processing to 3239 * proceed, true to consume it here. 3240 */ 3241 public boolean onContextItemSelected(MenuItem item) { 3242 if (mParent != null) { 3243 return mParent.onContextItemSelected(item); 3244 } 3245 return false; 3246 } 3247 3248 /** 3249 * This hook is called whenever the context menu is being closed (either by 3250 * the user canceling the menu with the back/menu button, or when an item is 3251 * selected). 3252 * 3253 * @param menu The context menu that is being closed. 3254 */ 3255 public void onContextMenuClosed(Menu menu) { 3256 if (mParent != null) { 3257 mParent.onContextMenuClosed(menu); 3258 } 3259 } 3260 3261 /** 3262 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3263 */ 3264 @Deprecated 3265 protected Dialog onCreateDialog(int id) { 3266 return null; 3267 } 3268 3269 /** 3270 * Callback for creating dialogs that are managed (saved and restored) for you 3271 * by the activity. The default implementation calls through to 3272 * {@link #onCreateDialog(int)} for compatibility. 3273 * 3274 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3275 * or later, consider instead using a {@link DialogFragment} instead.</em> 3276 * 3277 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3278 * this method the first time, and hang onto it thereafter. Any dialog 3279 * that is created by this method will automatically be saved and restored 3280 * for you, including whether it is showing. 3281 * 3282 * <p>If you would like the activity to manage saving and restoring dialogs 3283 * for you, you should override this method and handle any ids that are 3284 * passed to {@link #showDialog}. 3285 * 3286 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3287 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3288 * 3289 * @param id The id of the dialog. 3290 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3291 * @return The dialog. If you return null, the dialog will not be created. 3292 * 3293 * @see #onPrepareDialog(int, Dialog, Bundle) 3294 * @see #showDialog(int, Bundle) 3295 * @see #dismissDialog(int) 3296 * @see #removeDialog(int) 3297 * 3298 * @deprecated Use the new {@link DialogFragment} class with 3299 * {@link FragmentManager} instead; this is also 3300 * available on older platforms through the Android compatibility package. 3301 */ 3302 @Nullable 3303 @Deprecated 3304 protected Dialog onCreateDialog(int id, Bundle args) { 3305 return onCreateDialog(id); 3306 } 3307 3308 /** 3309 * @deprecated Old no-arguments version of 3310 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3311 */ 3312 @Deprecated 3313 protected void onPrepareDialog(int id, Dialog dialog) { 3314 dialog.setOwnerActivity(this); 3315 } 3316 3317 /** 3318 * Provides an opportunity to prepare a managed dialog before it is being 3319 * shown. The default implementation calls through to 3320 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3321 * 3322 * <p> 3323 * Override this if you need to update a managed dialog based on the state 3324 * of the application each time it is shown. For example, a time picker 3325 * dialog might want to be updated with the current time. You should call 3326 * through to the superclass's implementation. The default implementation 3327 * will set this Activity as the owner activity on the Dialog. 3328 * 3329 * @param id The id of the managed dialog. 3330 * @param dialog The dialog. 3331 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3332 * @see #onCreateDialog(int, Bundle) 3333 * @see #showDialog(int) 3334 * @see #dismissDialog(int) 3335 * @see #removeDialog(int) 3336 * 3337 * @deprecated Use the new {@link DialogFragment} class with 3338 * {@link FragmentManager} instead; this is also 3339 * available on older platforms through the Android compatibility package. 3340 */ 3341 @Deprecated 3342 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3343 onPrepareDialog(id, dialog); 3344 } 3345 3346 /** 3347 * Simple version of {@link #showDialog(int, Bundle)} that does not 3348 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3349 * with null arguments. 3350 * 3351 * @deprecated Use the new {@link DialogFragment} class with 3352 * {@link FragmentManager} instead; this is also 3353 * available on older platforms through the Android compatibility package. 3354 */ 3355 @Deprecated 3356 public final void showDialog(int id) { 3357 showDialog(id, null); 3358 } 3359 3360 /** 3361 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3362 * will be made with the same id the first time this is called for a given 3363 * id. From thereafter, the dialog will be automatically saved and restored. 3364 * 3365 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3366 * or later, consider instead using a {@link DialogFragment} instead.</em> 3367 * 3368 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3369 * be made to provide an opportunity to do any timely preparation. 3370 * 3371 * @param id The id of the managed dialog. 3372 * @param args Arguments to pass through to the dialog. These will be saved 3373 * and restored for you. Note that if the dialog is already created, 3374 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3375 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3376 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3377 * @return Returns true if the Dialog was created; false is returned if 3378 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3379 * 3380 * @see Dialog 3381 * @see #onCreateDialog(int, Bundle) 3382 * @see #onPrepareDialog(int, Dialog, Bundle) 3383 * @see #dismissDialog(int) 3384 * @see #removeDialog(int) 3385 * 3386 * @deprecated Use the new {@link DialogFragment} class with 3387 * {@link FragmentManager} instead; this is also 3388 * available on older platforms through the Android compatibility package. 3389 */ 3390 @Nullable 3391 @Deprecated 3392 public final boolean showDialog(int id, Bundle args) { 3393 if (mManagedDialogs == null) { 3394 mManagedDialogs = new SparseArray<ManagedDialog>(); 3395 } 3396 ManagedDialog md = mManagedDialogs.get(id); 3397 if (md == null) { 3398 md = new ManagedDialog(); 3399 md.mDialog = createDialog(id, null, args); 3400 if (md.mDialog == null) { 3401 return false; 3402 } 3403 mManagedDialogs.put(id, md); 3404 } 3405 3406 md.mArgs = args; 3407 onPrepareDialog(id, md.mDialog, args); 3408 md.mDialog.show(); 3409 return true; 3410 } 3411 3412 /** 3413 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3414 * 3415 * @param id The id of the managed dialog. 3416 * 3417 * @throws IllegalArgumentException if the id was not previously shown via 3418 * {@link #showDialog(int)}. 3419 * 3420 * @see #onCreateDialog(int, Bundle) 3421 * @see #onPrepareDialog(int, Dialog, Bundle) 3422 * @see #showDialog(int) 3423 * @see #removeDialog(int) 3424 * 3425 * @deprecated Use the new {@link DialogFragment} class with 3426 * {@link FragmentManager} instead; this is also 3427 * available on older platforms through the Android compatibility package. 3428 */ 3429 @Deprecated 3430 public final void dismissDialog(int id) { 3431 if (mManagedDialogs == null) { 3432 throw missingDialog(id); 3433 } 3434 3435 final ManagedDialog md = mManagedDialogs.get(id); 3436 if (md == null) { 3437 throw missingDialog(id); 3438 } 3439 md.mDialog.dismiss(); 3440 } 3441 3442 /** 3443 * Creates an exception to throw if a user passed in a dialog id that is 3444 * unexpected. 3445 */ 3446 private IllegalArgumentException missingDialog(int id) { 3447 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3448 + "shown via Activity#showDialog"); 3449 } 3450 3451 /** 3452 * Removes any internal references to a dialog managed by this Activity. 3453 * If the dialog is showing, it will dismiss it as part of the clean up. 3454 * 3455 * <p>This can be useful if you know that you will never show a dialog again and 3456 * want to avoid the overhead of saving and restoring it in the future. 3457 * 3458 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3459 * will not throw an exception if you try to remove an ID that does not 3460 * currently have an associated dialog.</p> 3461 * 3462 * @param id The id of the managed dialog. 3463 * 3464 * @see #onCreateDialog(int, Bundle) 3465 * @see #onPrepareDialog(int, Dialog, Bundle) 3466 * @see #showDialog(int) 3467 * @see #dismissDialog(int) 3468 * 3469 * @deprecated Use the new {@link DialogFragment} class with 3470 * {@link FragmentManager} instead; this is also 3471 * available on older platforms through the Android compatibility package. 3472 */ 3473 @Deprecated 3474 public final void removeDialog(int id) { 3475 if (mManagedDialogs != null) { 3476 final ManagedDialog md = mManagedDialogs.get(id); 3477 if (md != null) { 3478 md.mDialog.dismiss(); 3479 mManagedDialogs.remove(id); 3480 } 3481 } 3482 } 3483 3484 /** 3485 * This hook is called when the user signals the desire to start a search. 3486 * 3487 * <p>You can use this function as a simple way to launch the search UI, in response to a 3488 * menu item, search button, or other widgets within your activity. Unless overidden, 3489 * calling this function is the same as calling 3490 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3491 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3492 * 3493 * <p>You can override this function to force global search, e.g. in response to a dedicated 3494 * search key, or to block search entirely (by simply returning false). 3495 * 3496 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 3497 * The default implementation always returns {@code true}. 3498 * 3499 * @see android.app.SearchManager 3500 */ 3501 public boolean onSearchRequested() { 3502 startSearch(null, false, null, false); 3503 return true; 3504 } 3505 3506 /** 3507 * This hook is called to launch the search UI. 3508 * 3509 * <p>It is typically called from onSearchRequested(), either directly from 3510 * Activity.onSearchRequested() or from an overridden version in any given 3511 * Activity. If your goal is simply to activate search, it is preferred to call 3512 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3513 * is to inject specific data such as context data, it is preferred to <i>override</i> 3514 * onSearchRequested(), so that any callers to it will benefit from the override. 3515 * 3516 * @param initialQuery Any non-null non-empty string will be inserted as 3517 * pre-entered text in the search query box. 3518 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3519 * any further typing will replace it. This is useful for cases where an entire pre-formed 3520 * query is being inserted. If false, the selection point will be placed at the end of the 3521 * inserted query. This is useful when the inserted query is text that the user entered, 3522 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3523 * if initialQuery is a non-empty string.</i> 3524 * @param appSearchData An application can insert application-specific 3525 * context here, in order to improve quality or specificity of its own 3526 * searches. This data will be returned with SEARCH intent(s). Null if 3527 * no extra data is required. 3528 * @param globalSearch If false, this will only launch the search that has been specifically 3529 * defined by the application (which is usually defined as a local search). If no default 3530 * search is defined in the current application or activity, global search will be launched. 3531 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3532 * 3533 * @see android.app.SearchManager 3534 * @see #onSearchRequested 3535 */ 3536 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3537 @Nullable Bundle appSearchData, boolean globalSearch) { 3538 ensureSearchManager(); 3539 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3540 appSearchData, globalSearch); 3541 } 3542 3543 /** 3544 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3545 * the search dialog. Made available for testing purposes. 3546 * 3547 * @param query The query to trigger. If empty, the request will be ignored. 3548 * @param appSearchData An application can insert application-specific 3549 * context here, in order to improve quality or specificity of its own 3550 * searches. This data will be returned with SEARCH intent(s). Null if 3551 * no extra data is required. 3552 */ 3553 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3554 ensureSearchManager(); 3555 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3556 } 3557 3558 /** 3559 * Request that key events come to this activity. Use this if your 3560 * activity has no views with focus, but the activity still wants 3561 * a chance to process key events. 3562 * 3563 * @see android.view.Window#takeKeyEvents 3564 */ 3565 public void takeKeyEvents(boolean get) { 3566 getWindow().takeKeyEvents(get); 3567 } 3568 3569 /** 3570 * Enable extended window features. This is a convenience for calling 3571 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3572 * 3573 * @param featureId The desired feature as defined in 3574 * {@link android.view.Window}. 3575 * @return Returns true if the requested feature is supported and now 3576 * enabled. 3577 * 3578 * @see android.view.Window#requestFeature 3579 */ 3580 public final boolean requestWindowFeature(int featureId) { 3581 return getWindow().requestFeature(featureId); 3582 } 3583 3584 /** 3585 * Convenience for calling 3586 * {@link android.view.Window#setFeatureDrawableResource}. 3587 */ 3588 public final void setFeatureDrawableResource(int featureId, int resId) { 3589 getWindow().setFeatureDrawableResource(featureId, resId); 3590 } 3591 3592 /** 3593 * Convenience for calling 3594 * {@link android.view.Window#setFeatureDrawableUri}. 3595 */ 3596 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3597 getWindow().setFeatureDrawableUri(featureId, uri); 3598 } 3599 3600 /** 3601 * Convenience for calling 3602 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3603 */ 3604 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3605 getWindow().setFeatureDrawable(featureId, drawable); 3606 } 3607 3608 /** 3609 * Convenience for calling 3610 * {@link android.view.Window#setFeatureDrawableAlpha}. 3611 */ 3612 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3613 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3614 } 3615 3616 /** 3617 * Convenience for calling 3618 * {@link android.view.Window#getLayoutInflater}. 3619 */ 3620 @NonNull 3621 public LayoutInflater getLayoutInflater() { 3622 return getWindow().getLayoutInflater(); 3623 } 3624 3625 /** 3626 * Returns a {@link MenuInflater} with this context. 3627 */ 3628 @NonNull 3629 public MenuInflater getMenuInflater() { 3630 // Make sure that action views can get an appropriate theme. 3631 if (mMenuInflater == null) { 3632 initWindowDecorActionBar(); 3633 if (mActionBar != null) { 3634 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3635 } else { 3636 mMenuInflater = new MenuInflater(this); 3637 } 3638 } 3639 return mMenuInflater; 3640 } 3641 3642 @Override 3643 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3644 boolean first) { 3645 if (mParent == null) { 3646 super.onApplyThemeResource(theme, resid, first); 3647 } else { 3648 try { 3649 theme.setTo(mParent.getTheme()); 3650 } catch (Exception e) { 3651 // Empty 3652 } 3653 theme.applyStyle(resid, false); 3654 } 3655 3656 // Get the primary color and update the TaskDescription for this activity 3657 if (theme != null) { 3658 TypedArray a = theme.obtainStyledAttributes(com.android.internal.R.styleable.Theme); 3659 int colorPrimary = a.getColor(com.android.internal.R.styleable.Theme_colorPrimary, 0); 3660 a.recycle(); 3661 if (colorPrimary != 0) { 3662 ActivityManager.TaskDescription v = new ActivityManager.TaskDescription(null, null, 3663 colorPrimary); 3664 setTaskDescription(v); 3665 } 3666 } 3667 } 3668 3669 /** 3670 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 3671 * with no options. 3672 * 3673 * @param intent The intent to start. 3674 * @param requestCode If >= 0, this code will be returned in 3675 * onActivityResult() when the activity exits. 3676 * 3677 * @throws android.content.ActivityNotFoundException 3678 * 3679 * @see #startActivity 3680 */ 3681 public void startActivityForResult(Intent intent, int requestCode) { 3682 startActivityForResult(intent, requestCode, null); 3683 } 3684 3685 /** 3686 * Launch an activity for which you would like a result when it finished. 3687 * When this activity exits, your 3688 * onActivityResult() method will be called with the given requestCode. 3689 * Using a negative requestCode is the same as calling 3690 * {@link #startActivity} (the activity is not launched as a sub-activity). 3691 * 3692 * <p>Note that this method should only be used with Intent protocols 3693 * that are defined to return a result. In other protocols (such as 3694 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3695 * not get the result when you expect. For example, if the activity you 3696 * are launching uses the singleTask launch mode, it will not run in your 3697 * task and thus you will immediately receive a cancel result. 3698 * 3699 * <p>As a special case, if you call startActivityForResult() with a requestCode 3700 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3701 * activity, then your window will not be displayed until a result is 3702 * returned back from the started activity. This is to avoid visible 3703 * flickering when redirecting to another activity. 3704 * 3705 * <p>This method throws {@link android.content.ActivityNotFoundException} 3706 * if there was no Activity found to run the given Intent. 3707 * 3708 * @param intent The intent to start. 3709 * @param requestCode If >= 0, this code will be returned in 3710 * onActivityResult() when the activity exits. 3711 * @param options Additional options for how the Activity should be started. 3712 * See {@link android.content.Context#startActivity(Intent, Bundle) 3713 * Context.startActivity(Intent, Bundle)} for more details. 3714 * 3715 * @throws android.content.ActivityNotFoundException 3716 * 3717 * @see #startActivity 3718 */ 3719 public void startActivityForResult(Intent intent, int requestCode, @Nullable Bundle options) { 3720 if (mParent == null) { 3721 Instrumentation.ActivityResult ar = 3722 mInstrumentation.execStartActivity( 3723 this, mMainThread.getApplicationThread(), mToken, this, 3724 intent, requestCode, options); 3725 if (ar != null) { 3726 mMainThread.sendActivityResult( 3727 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3728 ar.getResultData()); 3729 } 3730 if (requestCode >= 0) { 3731 // If this start is requesting a result, we can avoid making 3732 // the activity visible until the result is received. Setting 3733 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3734 // activity hidden during this time, to avoid flickering. 3735 // This can only be done when a result is requested because 3736 // that guarantees we will get information back when the 3737 // activity is finished, no matter what happens to it. 3738 mStartedActivity = true; 3739 } 3740 3741 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 3742 if (decor != null) { 3743 decor.cancelPendingInputEvents(); 3744 } 3745 // TODO Consider clearing/flushing other event sources and events for child windows. 3746 } else { 3747 if (options != null) { 3748 mParent.startActivityFromChild(this, intent, requestCode, options); 3749 } else { 3750 // Note we want to go through this method for compatibility with 3751 // existing applications that may have overridden it. 3752 mParent.startActivityFromChild(this, intent, requestCode); 3753 } 3754 } 3755 if (options != null && !isTopOfTask()) { 3756 mActivityTransitionState.startExitOutTransition(this, options); 3757 } 3758 } 3759 3760 /** 3761 * @hide Implement to provide correct calling token. 3762 */ 3763 public void startActivityForResultAsUser(Intent intent, int requestCode, UserHandle user) { 3764 startActivityForResultAsUser(intent, requestCode, null, user); 3765 } 3766 3767 /** 3768 * @hide Implement to provide correct calling token. 3769 */ 3770 public void startActivityForResultAsUser(Intent intent, int requestCode, 3771 @Nullable Bundle options, UserHandle user) { 3772 if (options != null) { 3773 mActivityTransitionState.startExitOutTransition(this, options); 3774 } 3775 if (mParent != null) { 3776 throw new RuntimeException("Can't be called from a child"); 3777 } 3778 Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( 3779 this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, 3780 options, user); 3781 if (ar != null) { 3782 mMainThread.sendActivityResult( 3783 mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); 3784 } 3785 if (requestCode >= 0) { 3786 // If this start is requesting a result, we can avoid making 3787 // the activity visible until the result is received. Setting 3788 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3789 // activity hidden during this time, to avoid flickering. 3790 // This can only be done when a result is requested because 3791 // that guarantees we will get information back when the 3792 // activity is finished, no matter what happens to it. 3793 mStartedActivity = true; 3794 } 3795 3796 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 3797 if (decor != null) { 3798 decor.cancelPendingInputEvents(); 3799 } 3800 } 3801 3802 /** 3803 * @hide Implement to provide correct calling token. 3804 */ 3805 public void startActivityAsUser(Intent intent, UserHandle user) { 3806 startActivityAsUser(intent, null, user); 3807 } 3808 3809 /** 3810 * @hide Implement to provide correct calling token. 3811 */ 3812 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 3813 if (mParent != null) { 3814 throw new RuntimeException("Can't be called from a child"); 3815 } 3816 Instrumentation.ActivityResult ar = 3817 mInstrumentation.execStartActivity( 3818 this, mMainThread.getApplicationThread(), mToken, this, 3819 intent, -1, options, user); 3820 if (ar != null) { 3821 mMainThread.sendActivityResult( 3822 mToken, mEmbeddedID, -1, ar.getResultCode(), 3823 ar.getResultData()); 3824 } 3825 } 3826 3827 /** 3828 * Start a new activity as if it was started by the activity that started our 3829 * current activity. This is for the resolver and chooser activities, which operate 3830 * as intermediaries that dispatch their intent to the target the user selects -- to 3831 * do this, they must perform all security checks including permission grants as if 3832 * their launch had come from the original activity. 3833 * @hide 3834 */ 3835 public void startActivityAsCaller(Intent intent, @Nullable Bundle options) { 3836 if (mParent != null) { 3837 throw new RuntimeException("Can't be called from a child"); 3838 } 3839 Instrumentation.ActivityResult ar = 3840 mInstrumentation.execStartActivityAsCaller( 3841 this, mMainThread.getApplicationThread(), mToken, this, 3842 intent, -1, options); 3843 if (ar != null) { 3844 mMainThread.sendActivityResult( 3845 mToken, mEmbeddedID, -1, ar.getResultCode(), 3846 ar.getResultData()); 3847 } 3848 } 3849 3850 /** 3851 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 3852 * Intent, int, int, int, Bundle)} with no options. 3853 * 3854 * @param intent The IntentSender to launch. 3855 * @param requestCode If >= 0, this code will be returned in 3856 * onActivityResult() when the activity exits. 3857 * @param fillInIntent If non-null, this will be provided as the 3858 * intent parameter to {@link IntentSender#sendIntent}. 3859 * @param flagsMask Intent flags in the original IntentSender that you 3860 * would like to change. 3861 * @param flagsValues Desired values for any bits set in 3862 * <var>flagsMask</var> 3863 * @param extraFlags Always set to 0. 3864 */ 3865 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3866 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3867 throws IntentSender.SendIntentException { 3868 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 3869 flagsValues, extraFlags, null); 3870 } 3871 3872 /** 3873 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3874 * to use a IntentSender to describe the activity to be started. If 3875 * the IntentSender is for an activity, that activity will be started 3876 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3877 * here; otherwise, its associated action will be executed (such as 3878 * sending a broadcast) as if you had called 3879 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3880 * 3881 * @param intent The IntentSender to launch. 3882 * @param requestCode If >= 0, this code will be returned in 3883 * onActivityResult() when the activity exits. 3884 * @param fillInIntent If non-null, this will be provided as the 3885 * intent parameter to {@link IntentSender#sendIntent}. 3886 * @param flagsMask Intent flags in the original IntentSender that you 3887 * would like to change. 3888 * @param flagsValues Desired values for any bits set in 3889 * <var>flagsMask</var> 3890 * @param extraFlags Always set to 0. 3891 * @param options Additional options for how the Activity should be started. 3892 * See {@link android.content.Context#startActivity(Intent, Bundle) 3893 * Context.startActivity(Intent, Bundle)} for more details. If options 3894 * have also been supplied by the IntentSender, options given here will 3895 * override any that conflict with those given by the IntentSender. 3896 */ 3897 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3898 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3899 Bundle options) throws IntentSender.SendIntentException { 3900 if (mParent == null) { 3901 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3902 flagsMask, flagsValues, this, options); 3903 } else if (options != null) { 3904 mParent.startIntentSenderFromChild(this, intent, requestCode, 3905 fillInIntent, flagsMask, flagsValues, extraFlags, options); 3906 } else { 3907 // Note we want to go through this call for compatibility with 3908 // existing applications that may have overridden the method. 3909 mParent.startIntentSenderFromChild(this, intent, requestCode, 3910 fillInIntent, flagsMask, flagsValues, extraFlags); 3911 } 3912 } 3913 3914 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3915 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 3916 Bundle options) 3917 throws IntentSender.SendIntentException { 3918 try { 3919 String resolvedType = null; 3920 if (fillInIntent != null) { 3921 fillInIntent.migrateExtraStreamToClipData(); 3922 fillInIntent.prepareToLeaveProcess(); 3923 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3924 } 3925 int result = ActivityManagerNative.getDefault() 3926 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3927 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3928 requestCode, flagsMask, flagsValues, options); 3929 if (result == ActivityManager.START_CANCELED) { 3930 throw new IntentSender.SendIntentException(); 3931 } 3932 Instrumentation.checkStartActivityResult(result, null); 3933 } catch (RemoteException e) { 3934 } 3935 if (requestCode >= 0) { 3936 // If this start is requesting a result, we can avoid making 3937 // the activity visible until the result is received. Setting 3938 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3939 // activity hidden during this time, to avoid flickering. 3940 // This can only be done when a result is requested because 3941 // that guarantees we will get information back when the 3942 // activity is finished, no matter what happens to it. 3943 mStartedActivity = true; 3944 } 3945 } 3946 3947 /** 3948 * Same as {@link #startActivity(Intent, Bundle)} with no options 3949 * specified. 3950 * 3951 * @param intent The intent to start. 3952 * 3953 * @throws android.content.ActivityNotFoundException 3954 * 3955 * @see {@link #startActivity(Intent, Bundle)} 3956 * @see #startActivityForResult 3957 */ 3958 @Override 3959 public void startActivity(Intent intent) { 3960 this.startActivity(intent, null); 3961 } 3962 3963 /** 3964 * Launch a new activity. You will not receive any information about when 3965 * the activity exits. This implementation overrides the base version, 3966 * providing information about 3967 * the activity performing the launch. Because of this additional 3968 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3969 * required; if not specified, the new activity will be added to the 3970 * task of the caller. 3971 * 3972 * <p>This method throws {@link android.content.ActivityNotFoundException} 3973 * if there was no Activity found to run the given Intent. 3974 * 3975 * @param intent The intent to start. 3976 * @param options Additional options for how the Activity should be started. 3977 * See {@link android.content.Context#startActivity(Intent, Bundle) 3978 * Context.startActivity(Intent, Bundle)} for more details. 3979 * 3980 * @throws android.content.ActivityNotFoundException 3981 * 3982 * @see {@link #startActivity(Intent)} 3983 * @see #startActivityForResult 3984 */ 3985 @Override 3986 public void startActivity(Intent intent, @Nullable Bundle options) { 3987 if (options != null) { 3988 startActivityForResult(intent, -1, options); 3989 } else { 3990 // Note we want to go through this call for compatibility with 3991 // applications that may have overridden the method. 3992 startActivityForResult(intent, -1); 3993 } 3994 } 3995 3996 /** 3997 * Same as {@link #startActivities(Intent[], Bundle)} with no options 3998 * specified. 3999 * 4000 * @param intents The intents to start. 4001 * 4002 * @throws android.content.ActivityNotFoundException 4003 * 4004 * @see {@link #startActivities(Intent[], Bundle)} 4005 * @see #startActivityForResult 4006 */ 4007 @Override 4008 public void startActivities(Intent[] intents) { 4009 startActivities(intents, null); 4010 } 4011 4012 /** 4013 * Launch a new activity. You will not receive any information about when 4014 * the activity exits. This implementation overrides the base version, 4015 * providing information about 4016 * the activity performing the launch. Because of this additional 4017 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 4018 * required; if not specified, the new activity will be added to the 4019 * task of the caller. 4020 * 4021 * <p>This method throws {@link android.content.ActivityNotFoundException} 4022 * if there was no Activity found to run the given Intent. 4023 * 4024 * @param intents The intents to start. 4025 * @param options Additional options for how the Activity should be started. 4026 * See {@link android.content.Context#startActivity(Intent, Bundle) 4027 * Context.startActivity(Intent, Bundle)} for more details. 4028 * 4029 * @throws android.content.ActivityNotFoundException 4030 * 4031 * @see {@link #startActivities(Intent[])} 4032 * @see #startActivityForResult 4033 */ 4034 @Override 4035 public void startActivities(Intent[] intents, @Nullable Bundle options) { 4036 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 4037 mToken, this, intents, options); 4038 } 4039 4040 /** 4041 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 4042 * with no options. 4043 * 4044 * @param intent The IntentSender to launch. 4045 * @param fillInIntent If non-null, this will be provided as the 4046 * intent parameter to {@link IntentSender#sendIntent}. 4047 * @param flagsMask Intent flags in the original IntentSender that you 4048 * would like to change. 4049 * @param flagsValues Desired values for any bits set in 4050 * <var>flagsMask</var> 4051 * @param extraFlags Always set to 0. 4052 */ 4053 public void startIntentSender(IntentSender intent, 4054 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 4055 throws IntentSender.SendIntentException { 4056 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 4057 extraFlags, null); 4058 } 4059 4060 /** 4061 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 4062 * to start; see 4063 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 4064 * for more information. 4065 * 4066 * @param intent The IntentSender to launch. 4067 * @param fillInIntent If non-null, this will be provided as the 4068 * intent parameter to {@link IntentSender#sendIntent}. 4069 * @param flagsMask Intent flags in the original IntentSender that you 4070 * would like to change. 4071 * @param flagsValues Desired values for any bits set in 4072 * <var>flagsMask</var> 4073 * @param extraFlags Always set to 0. 4074 * @param options Additional options for how the Activity should be started. 4075 * See {@link android.content.Context#startActivity(Intent, Bundle) 4076 * Context.startActivity(Intent, Bundle)} for more details. If options 4077 * have also been supplied by the IntentSender, options given here will 4078 * override any that conflict with those given by the IntentSender. 4079 */ 4080 public void startIntentSender(IntentSender intent, 4081 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4082 Bundle options) throws IntentSender.SendIntentException { 4083 if (options != null) { 4084 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4085 flagsValues, extraFlags, options); 4086 } else { 4087 // Note we want to go through this call for compatibility with 4088 // applications that may have overridden the method. 4089 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4090 flagsValues, extraFlags); 4091 } 4092 } 4093 4094 /** 4095 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4096 * with no options. 4097 * 4098 * @param intent The intent to start. 4099 * @param requestCode If >= 0, this code will be returned in 4100 * onActivityResult() when the activity exits, as described in 4101 * {@link #startActivityForResult}. 4102 * 4103 * @return If a new activity was launched then true is returned; otherwise 4104 * false is returned and you must handle the Intent yourself. 4105 * 4106 * @see #startActivity 4107 * @see #startActivityForResult 4108 */ 4109 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode) { 4110 return startActivityIfNeeded(intent, requestCode, null); 4111 } 4112 4113 /** 4114 * A special variation to launch an activity only if a new activity 4115 * instance is needed to handle the given Intent. In other words, this is 4116 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4117 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4118 * singleTask or singleTop 4119 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4120 * and the activity 4121 * that handles <var>intent</var> is the same as your currently running 4122 * activity, then a new instance is not needed. In this case, instead of 4123 * the normal behavior of calling {@link #onNewIntent} this function will 4124 * return and you can handle the Intent yourself. 4125 * 4126 * <p>This function can only be called from a top-level activity; if it is 4127 * called from a child activity, a runtime exception will be thrown. 4128 * 4129 * @param intent The intent to start. 4130 * @param requestCode If >= 0, this code will be returned in 4131 * onActivityResult() when the activity exits, as described in 4132 * {@link #startActivityForResult}. 4133 * @param options Additional options for how the Activity should be started. 4134 * See {@link android.content.Context#startActivity(Intent, Bundle) 4135 * Context.startActivity(Intent, Bundle)} for more details. 4136 * 4137 * @return If a new activity was launched then true is returned; otherwise 4138 * false is returned and you must handle the Intent yourself. 4139 * 4140 * @see #startActivity 4141 * @see #startActivityForResult 4142 */ 4143 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode, 4144 @Nullable Bundle options) { 4145 if (mParent == null) { 4146 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4147 try { 4148 intent.migrateExtraStreamToClipData(); 4149 intent.prepareToLeaveProcess(); 4150 result = ActivityManagerNative.getDefault() 4151 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4152 intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, 4153 mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, 4154 null, options); 4155 } catch (RemoteException e) { 4156 // Empty 4157 } 4158 4159 Instrumentation.checkStartActivityResult(result, intent); 4160 4161 if (requestCode >= 0) { 4162 // If this start is requesting a result, we can avoid making 4163 // the activity visible until the result is received. Setting 4164 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4165 // activity hidden during this time, to avoid flickering. 4166 // This can only be done when a result is requested because 4167 // that guarantees we will get information back when the 4168 // activity is finished, no matter what happens to it. 4169 mStartedActivity = true; 4170 } 4171 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4172 } 4173 4174 throw new UnsupportedOperationException( 4175 "startActivityIfNeeded can only be called from a top-level activity"); 4176 } 4177 4178 /** 4179 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4180 * no options. 4181 * 4182 * @param intent The intent to dispatch to the next activity. For 4183 * correct behavior, this must be the same as the Intent that started 4184 * your own activity; the only changes you can make are to the extras 4185 * inside of it. 4186 * 4187 * @return Returns a boolean indicating whether there was another Activity 4188 * to start: true if there was a next activity to start, false if there 4189 * wasn't. In general, if true is returned you will then want to call 4190 * finish() on yourself. 4191 */ 4192 public boolean startNextMatchingActivity(@NonNull Intent intent) { 4193 return startNextMatchingActivity(intent, null); 4194 } 4195 4196 /** 4197 * Special version of starting an activity, for use when you are replacing 4198 * other activity components. You can use this to hand the Intent off 4199 * to the next Activity that can handle it. You typically call this in 4200 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4201 * 4202 * @param intent The intent to dispatch to the next activity. For 4203 * correct behavior, this must be the same as the Intent that started 4204 * your own activity; the only changes you can make are to the extras 4205 * inside of it. 4206 * @param options Additional options for how the Activity should be started. 4207 * See {@link android.content.Context#startActivity(Intent, Bundle) 4208 * Context.startActivity(Intent, Bundle)} for more details. 4209 * 4210 * @return Returns a boolean indicating whether there was another Activity 4211 * to start: true if there was a next activity to start, false if there 4212 * wasn't. In general, if true is returned you will then want to call 4213 * finish() on yourself. 4214 */ 4215 public boolean startNextMatchingActivity(@NonNull Intent intent, @Nullable Bundle options) { 4216 if (mParent == null) { 4217 try { 4218 intent.migrateExtraStreamToClipData(); 4219 intent.prepareToLeaveProcess(); 4220 return ActivityManagerNative.getDefault() 4221 .startNextMatchingActivity(mToken, intent, options); 4222 } catch (RemoteException e) { 4223 // Empty 4224 } 4225 return false; 4226 } 4227 4228 throw new UnsupportedOperationException( 4229 "startNextMatchingActivity can only be called from a top-level activity"); 4230 } 4231 4232 /** 4233 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4234 * with no options. 4235 * 4236 * @param child The activity making the call. 4237 * @param intent The intent to start. 4238 * @param requestCode Reply request code. < 0 if reply is not requested. 4239 * 4240 * @throws android.content.ActivityNotFoundException 4241 * 4242 * @see #startActivity 4243 * @see #startActivityForResult 4244 */ 4245 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4246 int requestCode) { 4247 startActivityFromChild(child, intent, requestCode, null); 4248 } 4249 4250 /** 4251 * This is called when a child activity of this one calls its 4252 * {@link #startActivity} or {@link #startActivityForResult} method. 4253 * 4254 * <p>This method throws {@link android.content.ActivityNotFoundException} 4255 * if there was no Activity found to run the given Intent. 4256 * 4257 * @param child The activity making the call. 4258 * @param intent The intent to start. 4259 * @param requestCode Reply request code. < 0 if reply is not requested. 4260 * @param options Additional options for how the Activity should be started. 4261 * See {@link android.content.Context#startActivity(Intent, Bundle) 4262 * Context.startActivity(Intent, Bundle)} for more details. 4263 * 4264 * @throws android.content.ActivityNotFoundException 4265 * 4266 * @see #startActivity 4267 * @see #startActivityForResult 4268 */ 4269 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4270 int requestCode, @Nullable Bundle options) { 4271 Instrumentation.ActivityResult ar = 4272 mInstrumentation.execStartActivity( 4273 this, mMainThread.getApplicationThread(), mToken, child, 4274 intent, requestCode, options); 4275 if (ar != null) { 4276 mMainThread.sendActivityResult( 4277 mToken, child.mEmbeddedID, requestCode, 4278 ar.getResultCode(), ar.getResultData()); 4279 } 4280 } 4281 4282 /** 4283 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4284 * with no options. 4285 * 4286 * @param fragment The fragment making the call. 4287 * @param intent The intent to start. 4288 * @param requestCode Reply request code. < 0 if reply is not requested. 4289 * 4290 * @throws android.content.ActivityNotFoundException 4291 * 4292 * @see Fragment#startActivity 4293 * @see Fragment#startActivityForResult 4294 */ 4295 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4296 int requestCode) { 4297 startActivityFromFragment(fragment, intent, requestCode, null); 4298 } 4299 4300 /** 4301 * This is called when a Fragment in this activity calls its 4302 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4303 * method. 4304 * 4305 * <p>This method throws {@link android.content.ActivityNotFoundException} 4306 * if there was no Activity found to run the given Intent. 4307 * 4308 * @param fragment The fragment making the call. 4309 * @param intent The intent to start. 4310 * @param requestCode Reply request code. < 0 if reply is not requested. 4311 * @param options Additional options for how the Activity should be started. 4312 * See {@link android.content.Context#startActivity(Intent, Bundle) 4313 * Context.startActivity(Intent, Bundle)} for more details. 4314 * 4315 * @throws android.content.ActivityNotFoundException 4316 * 4317 * @see Fragment#startActivity 4318 * @see Fragment#startActivityForResult 4319 */ 4320 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4321 int requestCode, @Nullable Bundle options) { 4322 if (options != null) { 4323 mActivityTransitionState.startExitOutTransition(this, options); 4324 } 4325 Instrumentation.ActivityResult ar = 4326 mInstrumentation.execStartActivity( 4327 this, mMainThread.getApplicationThread(), mToken, fragment, 4328 intent, requestCode, options); 4329 if (ar != null) { 4330 mMainThread.sendActivityResult( 4331 mToken, fragment.mWho, requestCode, 4332 ar.getResultCode(), ar.getResultData()); 4333 } 4334 } 4335 4336 /** 4337 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4338 * int, Intent, int, int, int, Bundle)} with no options. 4339 */ 4340 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4341 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4342 int extraFlags) 4343 throws IntentSender.SendIntentException { 4344 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4345 flagsMask, flagsValues, extraFlags, null); 4346 } 4347 4348 /** 4349 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4350 * taking a IntentSender; see 4351 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4352 * for more information. 4353 */ 4354 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4355 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4356 int extraFlags, @Nullable Bundle options) 4357 throws IntentSender.SendIntentException { 4358 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4359 flagsMask, flagsValues, child, options); 4360 } 4361 4362 /** 4363 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4364 * or {@link #finish} to specify an explicit transition animation to 4365 * perform next. 4366 * 4367 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4368 * to using this with starting activities is to supply the desired animation 4369 * information through a {@link ActivityOptions} bundle to 4370 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4371 * you to specify a custom animation even when starting an activity from 4372 * outside the context of the current top activity. 4373 * 4374 * @param enterAnim A resource ID of the animation resource to use for 4375 * the incoming activity. Use 0 for no animation. 4376 * @param exitAnim A resource ID of the animation resource to use for 4377 * the outgoing activity. Use 0 for no animation. 4378 */ 4379 public void overridePendingTransition(int enterAnim, int exitAnim) { 4380 try { 4381 ActivityManagerNative.getDefault().overridePendingTransition( 4382 mToken, getPackageName(), enterAnim, exitAnim); 4383 } catch (RemoteException e) { 4384 } 4385 } 4386 4387 /** 4388 * Call this to set the result that your activity will return to its 4389 * caller. 4390 * 4391 * @param resultCode The result code to propagate back to the originating 4392 * activity, often RESULT_CANCELED or RESULT_OK 4393 * 4394 * @see #RESULT_CANCELED 4395 * @see #RESULT_OK 4396 * @see #RESULT_FIRST_USER 4397 * @see #setResult(int, Intent) 4398 */ 4399 public final void setResult(int resultCode) { 4400 synchronized (this) { 4401 mResultCode = resultCode; 4402 mResultData = null; 4403 } 4404 } 4405 4406 /** 4407 * Call this to set the result that your activity will return to its 4408 * caller. 4409 * 4410 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4411 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4412 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4413 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4414 * Activity receiving the result access to the specific URIs in the Intent. 4415 * Access will remain until the Activity has finished (it will remain across the hosting 4416 * process being killed and other temporary destruction) and will be added 4417 * to any existing set of URI permissions it already holds. 4418 * 4419 * @param resultCode The result code to propagate back to the originating 4420 * activity, often RESULT_CANCELED or RESULT_OK 4421 * @param data The data to propagate back to the originating activity. 4422 * 4423 * @see #RESULT_CANCELED 4424 * @see #RESULT_OK 4425 * @see #RESULT_FIRST_USER 4426 * @see #setResult(int) 4427 */ 4428 public final void setResult(int resultCode, Intent data) { 4429 synchronized (this) { 4430 mResultCode = resultCode; 4431 mResultData = data; 4432 } 4433 } 4434 4435 /** 4436 * Return the name of the package that invoked this activity. This is who 4437 * the data in {@link #setResult setResult()} will be sent to. You can 4438 * use this information to validate that the recipient is allowed to 4439 * receive the data. 4440 * 4441 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4442 * did not use the {@link #startActivityForResult} 4443 * form that includes a request code), then the calling package will be 4444 * null.</p> 4445 * 4446 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4447 * the result from this method was unstable. If the process hosting the calling 4448 * package was no longer running, it would return null instead of the proper package 4449 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4450 * from that instead.</p> 4451 * 4452 * @return The package of the activity that will receive your 4453 * reply, or null if none. 4454 */ 4455 @Nullable 4456 public String getCallingPackage() { 4457 try { 4458 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4459 } catch (RemoteException e) { 4460 return null; 4461 } 4462 } 4463 4464 /** 4465 * Return the name of the activity that invoked this activity. This is 4466 * who the data in {@link #setResult setResult()} will be sent to. You 4467 * can use this information to validate that the recipient is allowed to 4468 * receive the data. 4469 * 4470 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4471 * did not use the {@link #startActivityForResult} 4472 * form that includes a request code), then the calling package will be 4473 * null. 4474 * 4475 * @return The ComponentName of the activity that will receive your 4476 * reply, or null if none. 4477 */ 4478 @Nullable 4479 public ComponentName getCallingActivity() { 4480 try { 4481 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4482 } catch (RemoteException e) { 4483 return null; 4484 } 4485 } 4486 4487 /** 4488 * Control whether this activity's main window is visible. This is intended 4489 * only for the special case of an activity that is not going to show a 4490 * UI itself, but can't just finish prior to onResume() because it needs 4491 * to wait for a service binding or such. Setting this to false allows 4492 * you to prevent your UI from being shown during that time. 4493 * 4494 * <p>The default value for this is taken from the 4495 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4496 */ 4497 public void setVisible(boolean visible) { 4498 if (mVisibleFromClient != visible) { 4499 mVisibleFromClient = visible; 4500 if (mVisibleFromServer) { 4501 if (visible) makeVisible(); 4502 else mDecor.setVisibility(View.INVISIBLE); 4503 } 4504 } 4505 } 4506 4507 void makeVisible() { 4508 if (!mWindowAdded) { 4509 ViewManager wm = getWindowManager(); 4510 wm.addView(mDecor, getWindow().getAttributes()); 4511 mWindowAdded = true; 4512 } 4513 mDecor.setVisibility(View.VISIBLE); 4514 } 4515 4516 /** 4517 * Check to see whether this activity is in the process of finishing, 4518 * either because you called {@link #finish} on it or someone else 4519 * has requested that it finished. This is often used in 4520 * {@link #onPause} to determine whether the activity is simply pausing or 4521 * completely finishing. 4522 * 4523 * @return If the activity is finishing, returns true; else returns false. 4524 * 4525 * @see #finish 4526 */ 4527 public boolean isFinishing() { 4528 return mFinished; 4529 } 4530 4531 /** 4532 * Returns true if the final {@link #onDestroy()} call has been made 4533 * on the Activity, so this instance is now dead. 4534 */ 4535 public boolean isDestroyed() { 4536 return mDestroyed; 4537 } 4538 4539 /** 4540 * Check to see whether this activity is in the process of being destroyed in order to be 4541 * recreated with a new configuration. This is often used in 4542 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4543 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4544 * 4545 * @return If the activity is being torn down in order to be recreated with a new configuration, 4546 * returns true; else returns false. 4547 */ 4548 public boolean isChangingConfigurations() { 4549 return mChangingConfigurations; 4550 } 4551 4552 /** 4553 * Cause this Activity to be recreated with a new instance. This results 4554 * in essentially the same flow as when the Activity is created due to 4555 * a configuration change -- the current instance will go through its 4556 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4557 */ 4558 public void recreate() { 4559 if (mParent != null) { 4560 throw new IllegalStateException("Can only be called on top-level activity"); 4561 } 4562 if (Looper.myLooper() != mMainThread.getLooper()) { 4563 throw new IllegalStateException("Must be called from main thread"); 4564 } 4565 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 4566 } 4567 4568 /** 4569 * Finishes the current activity and specifies whether to remove the task associated with this 4570 * activity. 4571 */ 4572 private void finish(boolean finishTask) { 4573 if (mParent == null) { 4574 int resultCode; 4575 Intent resultData; 4576 synchronized (this) { 4577 resultCode = mResultCode; 4578 resultData = mResultData; 4579 } 4580 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4581 try { 4582 if (resultData != null) { 4583 resultData.prepareToLeaveProcess(); 4584 } 4585 if (ActivityManagerNative.getDefault() 4586 .finishActivity(mToken, resultCode, resultData, finishTask)) { 4587 mFinished = true; 4588 } 4589 } catch (RemoteException e) { 4590 // Empty 4591 } 4592 } else { 4593 mParent.finishFromChild(this); 4594 } 4595 } 4596 4597 /** 4598 * Call this when your activity is done and should be closed. The 4599 * ActivityResult is propagated back to whoever launched you via 4600 * onActivityResult(). 4601 */ 4602 public void finish() { 4603 finish(false); 4604 } 4605 4606 /** 4607 * Finish this activity as well as all activities immediately below it 4608 * in the current task that have the same affinity. This is typically 4609 * used when an application can be launched on to another task (such as 4610 * from an ACTION_VIEW of a content type it understands) and the user 4611 * has used the up navigation to switch out of the current task and in 4612 * to its own task. In this case, if the user has navigated down into 4613 * any other activities of the second application, all of those should 4614 * be removed from the original task as part of the task switch. 4615 * 4616 * <p>Note that this finish does <em>not</em> allow you to deliver results 4617 * to the previous activity, and an exception will be thrown if you are trying 4618 * to do so.</p> 4619 */ 4620 public void finishAffinity() { 4621 if (mParent != null) { 4622 throw new IllegalStateException("Can not be called from an embedded activity"); 4623 } 4624 if (mResultCode != RESULT_CANCELED || mResultData != null) { 4625 throw new IllegalStateException("Can not be called to deliver a result"); 4626 } 4627 try { 4628 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 4629 mFinished = true; 4630 } 4631 } catch (RemoteException e) { 4632 // Empty 4633 } 4634 } 4635 4636 /** 4637 * This is called when a child activity of this one calls its 4638 * {@link #finish} method. The default implementation simply calls 4639 * finish() on this activity (the parent), finishing the entire group. 4640 * 4641 * @param child The activity making the call. 4642 * 4643 * @see #finish 4644 */ 4645 public void finishFromChild(Activity child) { 4646 finish(); 4647 } 4648 4649 /** 4650 * Reverses the Activity Scene entry Transition and triggers the calling Activity 4651 * to reverse its exit Transition. When the exit Transition completes, 4652 * {@link #finish()} is called. If no entry Transition was used, finish() is called 4653 * immediately and the Activity exit Transition is run. 4654 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 4655 */ 4656 public void finishAfterTransition() { 4657 if (!mActivityTransitionState.startExitBackTransition(this)) { 4658 finish(); 4659 } 4660 } 4661 4662 /** 4663 * Force finish another activity that you had previously started with 4664 * {@link #startActivityForResult}. 4665 * 4666 * @param requestCode The request code of the activity that you had 4667 * given to startActivityForResult(). If there are multiple 4668 * activities started with this request code, they 4669 * will all be finished. 4670 */ 4671 public void finishActivity(int requestCode) { 4672 if (mParent == null) { 4673 try { 4674 ActivityManagerNative.getDefault() 4675 .finishSubActivity(mToken, mEmbeddedID, requestCode); 4676 } catch (RemoteException e) { 4677 // Empty 4678 } 4679 } else { 4680 mParent.finishActivityFromChild(this, requestCode); 4681 } 4682 } 4683 4684 /** 4685 * This is called when a child activity of this one calls its 4686 * finishActivity(). 4687 * 4688 * @param child The activity making the call. 4689 * @param requestCode Request code that had been used to start the 4690 * activity. 4691 */ 4692 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 4693 try { 4694 ActivityManagerNative.getDefault() 4695 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 4696 } catch (RemoteException e) { 4697 // Empty 4698 } 4699 } 4700 4701 /** 4702 * Call this when your activity is done and should be closed and the task should be completely 4703 * removed as a part of finishing the Activity. 4704 */ 4705 public void finishAndRemoveTask() { 4706 finish(true); 4707 } 4708 4709 /** 4710 * Ask that the local app instance of this activity be released to free up its memory. 4711 * This is asking for the activity to be destroyed, but does <b>not</b> finish the activity -- 4712 * a new instance of the activity will later be re-created if needed due to the user 4713 * navigating back to it. 4714 * 4715 * @return Returns true if the activity was in a state that it has started the process 4716 * of destroying its current instance; returns false if for any reason this could not 4717 * be done: it is currently visible to the user, it is already being destroyed, it is 4718 * being finished, it hasn't yet saved its state, etc. 4719 */ 4720 public boolean releaseInstance() { 4721 try { 4722 return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); 4723 } catch (RemoteException e) { 4724 // Empty 4725 } 4726 return false; 4727 } 4728 4729 /** 4730 * Called when an activity you launched exits, giving you the requestCode 4731 * you started it with, the resultCode it returned, and any additional 4732 * data from it. The <var>resultCode</var> will be 4733 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 4734 * didn't return any result, or crashed during its operation. 4735 * 4736 * <p>You will receive this call immediately before onResume() when your 4737 * activity is re-starting. 4738 * 4739 * @param requestCode The integer request code originally supplied to 4740 * startActivityForResult(), allowing you to identify who this 4741 * result came from. 4742 * @param resultCode The integer result code returned by the child activity 4743 * through its setResult(). 4744 * @param data An Intent, which can return result data to the caller 4745 * (various data can be attached to Intent "extras"). 4746 * 4747 * @see #startActivityForResult 4748 * @see #createPendingResult 4749 * @see #setResult(int) 4750 */ 4751 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 4752 } 4753 4754 /** 4755 * Called when an activity you launched with an activity transition exposes this 4756 * Activity through a returning activity transition, giving you the resultCode 4757 * and any additional data from it. This method will only be called if the activity 4758 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 4759 * transitions with {@link Window#FEATURE_CONTENT_TRANSITIONS}. 4760 * 4761 * <p>The purpose of this function is to let the called Activity send a hint about 4762 * its state so that this underlying Activity can prepare to be exposed. A call to 4763 * this method does not guarantee that the called Activity has or will be exiting soon. 4764 * It only indicates that it will expose this Activity's Window and it has 4765 * some data to pass to prepare it.</p> 4766 * 4767 * @param resultCode The integer result code returned by the child activity 4768 * through its setResult(). 4769 * @param data An Intent, which can return result data to the caller 4770 * (various data can be attached to Intent "extras"). 4771 */ 4772 protected void onActivityReenter(int resultCode, Intent data) { 4773 } 4774 4775 /** 4776 * Create a new PendingIntent object which you can hand to others 4777 * for them to use to send result data back to your 4778 * {@link #onActivityResult} callback. The created object will be either 4779 * one-shot (becoming invalid after a result is sent back) or multiple 4780 * (allowing any number of results to be sent through it). 4781 * 4782 * @param requestCode Private request code for the sender that will be 4783 * associated with the result data when it is returned. The sender can not 4784 * modify this value, allowing you to identify incoming results. 4785 * @param data Default data to supply in the result, which may be modified 4786 * by the sender. 4787 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 4788 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 4789 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 4790 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 4791 * or any of the flags as supported by 4792 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 4793 * of the intent that can be supplied when the actual send happens. 4794 * 4795 * @return Returns an existing or new PendingIntent matching the given 4796 * parameters. May return null only if 4797 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 4798 * supplied. 4799 * 4800 * @see PendingIntent 4801 */ 4802 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 4803 @PendingIntent.Flags int flags) { 4804 String packageName = getPackageName(); 4805 try { 4806 data.prepareToLeaveProcess(); 4807 IIntentSender target = 4808 ActivityManagerNative.getDefault().getIntentSender( 4809 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 4810 mParent == null ? mToken : mParent.mToken, 4811 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 4812 UserHandle.myUserId()); 4813 return target != null ? new PendingIntent(target) : null; 4814 } catch (RemoteException e) { 4815 // Empty 4816 } 4817 return null; 4818 } 4819 4820 /** 4821 * Change the desired orientation of this activity. If the activity 4822 * is currently in the foreground or otherwise impacting the screen 4823 * orientation, the screen will immediately be changed (possibly causing 4824 * the activity to be restarted). Otherwise, this will be used the next 4825 * time the activity is visible. 4826 * 4827 * @param requestedOrientation An orientation constant as used in 4828 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4829 */ 4830 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 4831 if (mParent == null) { 4832 try { 4833 ActivityManagerNative.getDefault().setRequestedOrientation( 4834 mToken, requestedOrientation); 4835 } catch (RemoteException e) { 4836 // Empty 4837 } 4838 } else { 4839 mParent.setRequestedOrientation(requestedOrientation); 4840 } 4841 } 4842 4843 /** 4844 * Return the current requested orientation of the activity. This will 4845 * either be the orientation requested in its component's manifest, or 4846 * the last requested orientation given to 4847 * {@link #setRequestedOrientation(int)}. 4848 * 4849 * @return Returns an orientation constant as used in 4850 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4851 */ 4852 @ActivityInfo.ScreenOrientation 4853 public int getRequestedOrientation() { 4854 if (mParent == null) { 4855 try { 4856 return ActivityManagerNative.getDefault() 4857 .getRequestedOrientation(mToken); 4858 } catch (RemoteException e) { 4859 // Empty 4860 } 4861 } else { 4862 return mParent.getRequestedOrientation(); 4863 } 4864 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4865 } 4866 4867 /** 4868 * Return the identifier of the task this activity is in. This identifier 4869 * will remain the same for the lifetime of the activity. 4870 * 4871 * @return Task identifier, an opaque integer. 4872 */ 4873 public int getTaskId() { 4874 try { 4875 return ActivityManagerNative.getDefault() 4876 .getTaskForActivity(mToken, false); 4877 } catch (RemoteException e) { 4878 return -1; 4879 } 4880 } 4881 4882 /** 4883 * Return whether this activity is the root of a task. The root is the 4884 * first activity in a task. 4885 * 4886 * @return True if this is the root activity, else false. 4887 */ 4888 public boolean isTaskRoot() { 4889 try { 4890 return ActivityManagerNative.getDefault() 4891 .getTaskForActivity(mToken, true) >= 0; 4892 } catch (RemoteException e) { 4893 return false; 4894 } 4895 } 4896 4897 /** 4898 * Move the task containing this activity to the back of the activity 4899 * stack. The activity's order within the task is unchanged. 4900 * 4901 * @param nonRoot If false then this only works if the activity is the root 4902 * of a task; if true it will work for any activity in 4903 * a task. 4904 * 4905 * @return If the task was moved (or it was already at the 4906 * back) true is returned, else false. 4907 */ 4908 public boolean moveTaskToBack(boolean nonRoot) { 4909 try { 4910 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 4911 mToken, nonRoot); 4912 } catch (RemoteException e) { 4913 // Empty 4914 } 4915 return false; 4916 } 4917 4918 /** 4919 * Returns class name for this activity with the package prefix removed. 4920 * This is the default name used to read and write settings. 4921 * 4922 * @return The local class name. 4923 */ 4924 @NonNull 4925 public String getLocalClassName() { 4926 final String pkg = getPackageName(); 4927 final String cls = mComponent.getClassName(); 4928 int packageLen = pkg.length(); 4929 if (!cls.startsWith(pkg) || cls.length() <= packageLen 4930 || cls.charAt(packageLen) != '.') { 4931 return cls; 4932 } 4933 return cls.substring(packageLen+1); 4934 } 4935 4936 /** 4937 * Returns complete component name of this activity. 4938 * 4939 * @return Returns the complete component name for this activity 4940 */ 4941 public ComponentName getComponentName() 4942 { 4943 return mComponent; 4944 } 4945 4946 /** 4947 * Retrieve a {@link SharedPreferences} object for accessing preferences 4948 * that are private to this activity. This simply calls the underlying 4949 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 4950 * class name as the preferences name. 4951 * 4952 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 4953 * operation, {@link #MODE_WORLD_READABLE} and 4954 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 4955 * 4956 * @return Returns the single SharedPreferences instance that can be used 4957 * to retrieve and modify the preference values. 4958 */ 4959 public SharedPreferences getPreferences(int mode) { 4960 return getSharedPreferences(getLocalClassName(), mode); 4961 } 4962 4963 private void ensureSearchManager() { 4964 if (mSearchManager != null) { 4965 return; 4966 } 4967 4968 mSearchManager = new SearchManager(this, null); 4969 } 4970 4971 @Override 4972 public Object getSystemService(@ServiceName @NonNull String name) { 4973 if (getBaseContext() == null) { 4974 throw new IllegalStateException( 4975 "System services not available to Activities before onCreate()"); 4976 } 4977 4978 if (WINDOW_SERVICE.equals(name)) { 4979 return mWindowManager; 4980 } else if (SEARCH_SERVICE.equals(name)) { 4981 ensureSearchManager(); 4982 return mSearchManager; 4983 } 4984 return super.getSystemService(name); 4985 } 4986 4987 /** 4988 * Change the title associated with this activity. If this is a 4989 * top-level activity, the title for its window will change. If it 4990 * is an embedded activity, the parent can do whatever it wants 4991 * with it. 4992 */ 4993 public void setTitle(CharSequence title) { 4994 mTitle = title; 4995 onTitleChanged(title, mTitleColor); 4996 4997 if (mParent != null) { 4998 mParent.onChildTitleChanged(this, title); 4999 } 5000 } 5001 5002 /** 5003 * Change the title associated with this activity. If this is a 5004 * top-level activity, the title for its window will change. If it 5005 * is an embedded activity, the parent can do whatever it wants 5006 * with it. 5007 */ 5008 public void setTitle(int titleId) { 5009 setTitle(getText(titleId)); 5010 } 5011 5012 /** 5013 * Change the color of the title associated with this activity. 5014 * <p> 5015 * This method is deprecated starting in API Level 11 and replaced by action 5016 * bar styles. For information on styling the Action Bar, read the <a 5017 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 5018 * guide. 5019 * 5020 * @deprecated Use action bar styles instead. 5021 */ 5022 @Deprecated 5023 public void setTitleColor(int textColor) { 5024 mTitleColor = textColor; 5025 onTitleChanged(mTitle, textColor); 5026 } 5027 5028 public final CharSequence getTitle() { 5029 return mTitle; 5030 } 5031 5032 public final int getTitleColor() { 5033 return mTitleColor; 5034 } 5035 5036 protected void onTitleChanged(CharSequence title, int color) { 5037 if (mTitleReady) { 5038 final Window win = getWindow(); 5039 if (win != null) { 5040 win.setTitle(title); 5041 if (color != 0) { 5042 win.setTitleColor(color); 5043 } 5044 } 5045 if (mActionBar != null) { 5046 mActionBar.setWindowTitle(title); 5047 } 5048 } 5049 } 5050 5051 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 5052 } 5053 5054 /** 5055 * Sets information describing the task with this activity for presentation inside the Recents 5056 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 5057 * are traversed in order from the topmost activity to the bottommost. The traversal continues 5058 * for each property until a suitable value is found. For each task the taskDescription will be 5059 * returned in {@link android.app.ActivityManager.TaskDescription}. 5060 * 5061 * @see ActivityManager#getRecentTasks 5062 * @see android.app.ActivityManager.TaskDescription 5063 * 5064 * @param taskDescription The TaskDescription properties that describe the task with this activity 5065 */ 5066 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 5067 ActivityManager.TaskDescription td; 5068 // Scale the icon down to something reasonable if it is provided 5069 if (taskDescription.getIcon() != null) { 5070 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 5071 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, true); 5072 td = new ActivityManager.TaskDescription(taskDescription.getLabel(), icon, 5073 taskDescription.getPrimaryColor()); 5074 } else { 5075 td = taskDescription; 5076 } 5077 try { 5078 ActivityManagerNative.getDefault().setTaskDescription(mToken, td); 5079 } catch (RemoteException e) { 5080 } 5081 } 5082 5083 /** 5084 * Sets the visibility of the progress bar in the title. 5085 * <p> 5086 * In order for the progress bar to be shown, the feature must be requested 5087 * via {@link #requestWindowFeature(int)}. 5088 * 5089 * @param visible Whether to show the progress bars in the title. 5090 */ 5091 public final void setProgressBarVisibility(boolean visible) { 5092 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5093 Window.PROGRESS_VISIBILITY_OFF); 5094 } 5095 5096 /** 5097 * Sets the visibility of the indeterminate progress bar in the title. 5098 * <p> 5099 * In order for the progress bar to be shown, the feature must be requested 5100 * via {@link #requestWindowFeature(int)}. 5101 * 5102 * @param visible Whether to show the progress bars in the title. 5103 */ 5104 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5105 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5106 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5107 } 5108 5109 /** 5110 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5111 * is always indeterminate). 5112 * <p> 5113 * In order for the progress bar to be shown, the feature must be requested 5114 * via {@link #requestWindowFeature(int)}. 5115 * 5116 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5117 */ 5118 public final void setProgressBarIndeterminate(boolean indeterminate) { 5119 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5120 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5121 : Window.PROGRESS_INDETERMINATE_OFF); 5122 } 5123 5124 /** 5125 * Sets the progress for the progress bars in the title. 5126 * <p> 5127 * In order for the progress bar to be shown, the feature must be requested 5128 * via {@link #requestWindowFeature(int)}. 5129 * 5130 * @param progress The progress for the progress bar. Valid ranges are from 5131 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5132 * bar will be completely filled and will fade out. 5133 */ 5134 public final void setProgress(int progress) { 5135 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5136 } 5137 5138 /** 5139 * Sets the secondary progress for the progress bar in the title. This 5140 * progress is drawn between the primary progress (set via 5141 * {@link #setProgress(int)} and the background. It can be ideal for media 5142 * scenarios such as showing the buffering progress while the default 5143 * progress shows the play progress. 5144 * <p> 5145 * In order for the progress bar to be shown, the feature must be requested 5146 * via {@link #requestWindowFeature(int)}. 5147 * 5148 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5149 * 0 to 10000 (both inclusive). 5150 */ 5151 public final void setSecondaryProgress(int secondaryProgress) { 5152 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5153 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5154 } 5155 5156 /** 5157 * Suggests an audio stream whose volume should be changed by the hardware 5158 * volume controls. 5159 * <p> 5160 * The suggested audio stream will be tied to the window of this Activity. 5161 * Volume requests which are received while the Activity is in the 5162 * foreground will affect this stream. 5163 * <p> 5164 * It is not guaranteed that the hardware volume controls will always change 5165 * this stream's volume (for example, if a call is in progress, its stream's 5166 * volume may be changed instead). To reset back to the default, use 5167 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5168 * 5169 * @param streamType The type of the audio stream whose volume should be 5170 * changed by the hardware volume controls. 5171 */ 5172 public final void setVolumeControlStream(int streamType) { 5173 getWindow().setVolumeControlStream(streamType); 5174 } 5175 5176 /** 5177 * Gets the suggested audio stream whose volume should be changed by the 5178 * hardware volume controls. 5179 * 5180 * @return The suggested audio stream type whose volume should be changed by 5181 * the hardware volume controls. 5182 * @see #setVolumeControlStream(int) 5183 */ 5184 public final int getVolumeControlStream() { 5185 return getWindow().getVolumeControlStream(); 5186 } 5187 5188 /** 5189 * Sets a {@link MediaController} to send media keys and volume changes to. 5190 * <p> 5191 * The controller will be tied to the window of this Activity. Media key and 5192 * volume events which are received while the Activity is in the foreground 5193 * will be forwarded to the controller and used to invoke transport controls 5194 * or adjust the volume. This may be used instead of or in addition to 5195 * {@link #setVolumeControlStream} to affect a specific session instead of a 5196 * specific stream. 5197 * <p> 5198 * It is not guaranteed that the hardware volume controls will always change 5199 * this session's volume (for example, if a call is in progress, its 5200 * stream's volume may be changed instead). To reset back to the default use 5201 * null as the controller. 5202 * 5203 * @param controller The controller for the session which should receive 5204 * media keys and volume changes. 5205 */ 5206 public final void setMediaController(MediaController controller) { 5207 getWindow().setMediaController(controller); 5208 } 5209 5210 /** 5211 * Gets the controller which should be receiving media key and volume events 5212 * while this activity is in the foreground. 5213 * 5214 * @return The controller which should receive events. 5215 * @see #setMediaController(android.media.session.MediaController) 5216 */ 5217 public final MediaController getMediaController() { 5218 return getWindow().getMediaController(); 5219 } 5220 5221 /** 5222 * Runs the specified action on the UI thread. If the current thread is the UI 5223 * thread, then the action is executed immediately. If the current thread is 5224 * not the UI thread, the action is posted to the event queue of the UI thread. 5225 * 5226 * @param action the action to run on the UI thread 5227 */ 5228 public final void runOnUiThread(Runnable action) { 5229 if (Thread.currentThread() != mUiThread) { 5230 mHandler.post(action); 5231 } else { 5232 action.run(); 5233 } 5234 } 5235 5236 /** 5237 * Standard implementation of 5238 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5239 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5240 * This implementation does nothing and is for 5241 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5242 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5243 * 5244 * @see android.view.LayoutInflater#createView 5245 * @see android.view.Window#getLayoutInflater 5246 */ 5247 @Nullable 5248 public View onCreateView(String name, Context context, AttributeSet attrs) { 5249 return null; 5250 } 5251 5252 /** 5253 * Standard implementation of 5254 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5255 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5256 * This implementation handles <fragment> tags to embed fragments inside 5257 * of the activity. 5258 * 5259 * @see android.view.LayoutInflater#createView 5260 * @see android.view.Window#getLayoutInflater 5261 */ 5262 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5263 if (!"fragment".equals(name)) { 5264 return onCreateView(name, context, attrs); 5265 } 5266 5267 return mFragments.onCreateView(parent, name, context, attrs); 5268 } 5269 5270 /** 5271 * Print the Activity's state into the given stream. This gets invoked if 5272 * you run "adb shell dumpsys activity <activity_component_name>". 5273 * 5274 * @param prefix Desired prefix to prepend at each line of output. 5275 * @param fd The raw file descriptor that the dump is being sent to. 5276 * @param writer The PrintWriter to which you should dump your state. This will be 5277 * closed for you after you return. 5278 * @param args additional arguments to the dump request. 5279 */ 5280 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5281 dumpInner(prefix, fd, writer, args); 5282 } 5283 5284 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5285 writer.print(prefix); writer.print("Local Activity "); 5286 writer.print(Integer.toHexString(System.identityHashCode(this))); 5287 writer.println(" State:"); 5288 String innerPrefix = prefix + " "; 5289 writer.print(innerPrefix); writer.print("mResumed="); 5290 writer.print(mResumed); writer.print(" mStopped="); 5291 writer.print(mStopped); writer.print(" mFinished="); 5292 writer.println(mFinished); 5293 writer.print(innerPrefix); writer.print("mLoadersStarted="); 5294 writer.println(mLoadersStarted); 5295 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5296 writer.println(mChangingConfigurations); 5297 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5298 writer.println(mCurrentConfig); 5299 5300 if (mLoaderManager != null) { 5301 writer.print(prefix); writer.print("Loader Manager "); 5302 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 5303 writer.println(":"); 5304 mLoaderManager.dump(prefix + " ", fd, writer, args); 5305 } 5306 5307 mFragments.dump(prefix, fd, writer, args); 5308 5309 if (getWindow() != null && 5310 getWindow().peekDecorView() != null && 5311 getWindow().peekDecorView().getViewRootImpl() != null) { 5312 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5313 } 5314 5315 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5316 } 5317 5318 /** 5319 * Bit indicating that this activity is "immersive" and should not be 5320 * interrupted by notifications if possible. 5321 * 5322 * This value is initially set by the manifest property 5323 * <code>android:immersive</code> but may be changed at runtime by 5324 * {@link #setImmersive}. 5325 * 5326 * @see #setImmersive(boolean) 5327 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5328 */ 5329 public boolean isImmersive() { 5330 try { 5331 return ActivityManagerNative.getDefault().isImmersive(mToken); 5332 } catch (RemoteException e) { 5333 return false; 5334 } 5335 } 5336 5337 /** 5338 * Indication of whether this is the highest level activity in this task. Can be used to 5339 * determine whether an activity launched by this activity was placed in the same task or 5340 * another task. 5341 * 5342 * @return true if this is the topmost, non-finishing activity in its task. 5343 */ 5344 private boolean isTopOfTask() { 5345 try { 5346 return ActivityManagerNative.getDefault().isTopOfTask(mToken); 5347 } catch (RemoteException e) { 5348 return false; 5349 } 5350 } 5351 5352 /** 5353 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5354 * fullscreen opaque Activity. 5355 * <p> 5356 * Call this whenever the background of a translucent Activity has changed to become opaque. 5357 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5358 * <p> 5359 * This call has no effect on non-translucent activities or on activities with the 5360 * {@link android.R.attr#windowIsFloating} attribute. 5361 * 5362 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5363 * ActivityOptions) 5364 * @see TranslucentConversionListener 5365 * 5366 * @hide 5367 */ 5368 @SystemApi 5369 public void convertFromTranslucent() { 5370 try { 5371 mTranslucentCallback = null; 5372 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5373 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5374 } 5375 } catch (RemoteException e) { 5376 // pass 5377 } 5378 } 5379 5380 /** 5381 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5382 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5383 * <p> 5384 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5385 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5386 * be called indicating that it is safe to make this activity translucent again. Until 5387 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5388 * behind the frontmost Activity will be indeterminate. 5389 * <p> 5390 * This call has no effect on non-translucent activities or on activities with the 5391 * {@link android.R.attr#windowIsFloating} attribute. 5392 * 5393 * @param callback the method to call when all visible Activities behind this one have been 5394 * drawn and it is safe to make this Activity translucent again. 5395 * @param options activity options delivered to the activity below this one. The options 5396 * are retrieved using {@link #getActivityOptions}. 5397 * @return <code>true</code> if Window was opaque and will become translucent or 5398 * <code>false</code> if window was translucent and no change needed to be made. 5399 * 5400 * @see #convertFromTranslucent() 5401 * @see TranslucentConversionListener 5402 * 5403 * @hide 5404 */ 5405 @SystemApi 5406 public boolean convertToTranslucent(TranslucentConversionListener callback, 5407 ActivityOptions options) { 5408 boolean drawComplete; 5409 try { 5410 mTranslucentCallback = callback; 5411 mChangeCanvasToTranslucent = 5412 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 5413 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5414 drawComplete = true; 5415 } catch (RemoteException e) { 5416 // Make callback return as though it timed out. 5417 mChangeCanvasToTranslucent = false; 5418 drawComplete = false; 5419 } 5420 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 5421 // Window is already translucent. 5422 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5423 } 5424 return mChangeCanvasToTranslucent; 5425 } 5426 5427 /** @hide */ 5428 void onTranslucentConversionComplete(boolean drawComplete) { 5429 if (mTranslucentCallback != null) { 5430 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5431 mTranslucentCallback = null; 5432 } 5433 if (mChangeCanvasToTranslucent) { 5434 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5435 } 5436 } 5437 5438 /** @hide */ 5439 public void onNewActivityOptions(ActivityOptions options) { 5440 mActivityTransitionState.setEnterActivityOptions(this, options); 5441 if (!mStopped) { 5442 mActivityTransitionState.enterReady(this); 5443 } 5444 } 5445 5446 /** 5447 * Retrieve the ActivityOptions passed in from the launching activity or passed back 5448 * from an activity launched by this activity in its call to {@link 5449 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 5450 * 5451 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 5452 * @hide 5453 */ 5454 ActivityOptions getActivityOptions() { 5455 try { 5456 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 5457 } catch (RemoteException e) { 5458 } 5459 return null; 5460 } 5461 5462 /** 5463 * Activities that want to remain visible behind a translucent activity above them must call 5464 * this method anytime before a return from {@link #onPause()}. If this call is successful 5465 * then the activity will remain visible when {@link #onPause()} is called, and can continue to 5466 * play media in the background, but it must stop playing and release resources prior to or 5467 * within the call to {@link #onVisibleBehindCanceled()}. If this call returns false, the 5468 * activity will not be visible in the background, and must release any media resources 5469 * immediately. 5470 * 5471 * <p>Only fullscreen opaque activities may make this call. I.e. this call is a nop 5472 * for dialog and translucent activities. 5473 * 5474 * <p>False will be returned any time this method is call between the return of onPause and 5475 * the next call to onResume. 5476 * 5477 * @param visible true to notify the system that the activity wishes to be visible behind other 5478 * translucent activities, false to indicate otherwise. Resources must be 5479 * released when passing false to this method. 5480 * @return the resulting visibiity state. If true the activity may remain visible beyond 5481 * {@link #onPause()}. If false then the activity may not count on being visible behind 5482 * other translucent activities, and must stop any media playback and release resources. 5483 * Returning false may occur in lieu of a call to onVisibleBehindCanceled() so the return 5484 * value must be checked. 5485 * 5486 * @see #onVisibleBehindCanceled() 5487 * @see #onBackgroundVisibleBehindChanged(boolean) 5488 */ 5489 public boolean requestVisibleBehind(boolean visible) { 5490 if (!mResumed) { 5491 // Do not permit paused or stopped activities to do this. 5492 visible = false; 5493 } 5494 try { 5495 mVisibleBehind = ActivityManagerNative.getDefault() 5496 .requestVisibleBehind(mToken, visible) && visible; 5497 } catch (RemoteException e) { 5498 mVisibleBehind = false; 5499 } 5500 return mVisibleBehind; 5501 } 5502 5503 /** 5504 * Called when a translucent activity over this activity is becoming opaque or another 5505 * activity is being launched. Activities that override this method must call 5506 * <code>super.onVisibleBehindCanceled()</code> or a SuperNotCalledException will be thrown. 5507 * 5508 * <p>When this method is called the activity has 500 msec to release any resources it may be 5509 * using while visible in the background. 5510 * If the activity has not returned from this method in 500 msec the system will destroy 5511 * the activity and kill the process in order to recover the resources for another 5512 * process. Otherwise {@link #onStop()} will be called following return. 5513 * 5514 * @see #requestVisibleBehind(boolean) 5515 * @see #onBackgroundVisibleBehindChanged(boolean) 5516 */ 5517 public void onVisibleBehindCanceled() { 5518 mCalled = true; 5519 } 5520 5521 /** 5522 * Translucent activities may call this to determine if there is an activity below them that 5523 * is currently set to be visible in the background. 5524 * 5525 * @return true if an activity below is set to visible according to the most recent call to 5526 * {@link #requestVisibleBehind(boolean)}, false otherwise. 5527 * 5528 * @see #requestVisibleBehind(boolean) 5529 * @see #onVisibleBehindCanceled() 5530 * @see #onBackgroundVisibleBehindChanged(boolean) 5531 * @hide 5532 */ 5533 @SystemApi 5534 public boolean isBackgroundVisibleBehind() { 5535 try { 5536 return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); 5537 } catch (RemoteException e) { 5538 } 5539 return false; 5540 } 5541 5542 /** 5543 * The topmost foreground activity will receive this call when the background visibility state 5544 * of the activity below it changes. 5545 * 5546 * This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be 5547 * due to a background activity finishing itself. 5548 * 5549 * @param visible true if a background activity is visible, false otherwise. 5550 * 5551 * @see #requestVisibleBehind(boolean) 5552 * @see #onVisibleBehindCanceled() 5553 * @hide 5554 */ 5555 @SystemApi 5556 public void onBackgroundVisibleBehindChanged(boolean visible) { 5557 } 5558 5559 /** 5560 * Activities cannot draw during the period that their windows are animating in. In order 5561 * to know when it is safe to begin drawing they can override this method which will be 5562 * called when the entering animation has completed. 5563 */ 5564 public void onEnterAnimationComplete() { 5565 } 5566 5567 /** 5568 * Adjust the current immersive mode setting. 5569 * 5570 * Note that changing this value will have no effect on the activity's 5571 * {@link android.content.pm.ActivityInfo} structure; that is, if 5572 * <code>android:immersive</code> is set to <code>true</code> 5573 * in the application's manifest entry for this activity, the {@link 5574 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 5575 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5576 * FLAG_IMMERSIVE} bit set. 5577 * 5578 * @see #isImmersive() 5579 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5580 */ 5581 public void setImmersive(boolean i) { 5582 try { 5583 ActivityManagerNative.getDefault().setImmersive(mToken, i); 5584 } catch (RemoteException e) { 5585 // pass 5586 } 5587 } 5588 5589 /** 5590 * Start an action mode. 5591 * 5592 * @param callback Callback that will manage lifecycle events for this context mode 5593 * @return The ContextMode that was started, or null if it was canceled 5594 * 5595 * @see ActionMode 5596 */ 5597 @Nullable 5598 public ActionMode startActionMode(ActionMode.Callback callback) { 5599 return mWindow.getDecorView().startActionMode(callback); 5600 } 5601 5602 /** 5603 * Give the Activity a chance to control the UI for an action mode requested 5604 * by the system. 5605 * 5606 * <p>Note: If you are looking for a notification callback that an action mode 5607 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 5608 * 5609 * @param callback The callback that should control the new action mode 5610 * @return The new action mode, or <code>null</code> if the activity does not want to 5611 * provide special handling for this action mode. (It will be handled by the system.) 5612 */ 5613 @Nullable 5614 @Override 5615 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 5616 initWindowDecorActionBar(); 5617 if (mActionBar != null) { 5618 return mActionBar.startActionMode(callback); 5619 } 5620 return null; 5621 } 5622 5623 /** 5624 * Notifies the Activity that an action mode has been started. 5625 * Activity subclasses overriding this method should call the superclass implementation. 5626 * 5627 * @param mode The new action mode. 5628 */ 5629 @Override 5630 public void onActionModeStarted(ActionMode mode) { 5631 } 5632 5633 /** 5634 * Notifies the activity that an action mode has finished. 5635 * Activity subclasses overriding this method should call the superclass implementation. 5636 * 5637 * @param mode The action mode that just finished. 5638 */ 5639 @Override 5640 public void onActionModeFinished(ActionMode mode) { 5641 } 5642 5643 /** 5644 * Returns true if the app should recreate the task when navigating 'up' from this activity 5645 * by using targetIntent. 5646 * 5647 * <p>If this method returns false the app can trivially call 5648 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 5649 * up navigation. If this method returns false, the app should synthesize a new task stack 5650 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 5651 * 5652 * @param targetIntent An intent representing the target destination for up navigation 5653 * @return true if navigating up should recreate a new task stack, false if the same task 5654 * should be used for the destination 5655 */ 5656 public boolean shouldUpRecreateTask(Intent targetIntent) { 5657 try { 5658 PackageManager pm = getPackageManager(); 5659 ComponentName cn = targetIntent.getComponent(); 5660 if (cn == null) { 5661 cn = targetIntent.resolveActivity(pm); 5662 } 5663 ActivityInfo info = pm.getActivityInfo(cn, 0); 5664 if (info.taskAffinity == null) { 5665 return false; 5666 } 5667 return ActivityManagerNative.getDefault() 5668 .shouldUpRecreateTask(mToken, info.taskAffinity); 5669 } catch (RemoteException e) { 5670 return false; 5671 } catch (NameNotFoundException e) { 5672 return false; 5673 } 5674 } 5675 5676 /** 5677 * Navigate from this activity to the activity specified by upIntent, finishing this activity 5678 * in the process. If the activity indicated by upIntent already exists in the task's history, 5679 * this activity and all others before the indicated activity in the history stack will be 5680 * finished. 5681 * 5682 * <p>If the indicated activity does not appear in the history stack, this will finish 5683 * each activity in this task until the root activity of the task is reached, resulting in 5684 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 5685 * when an activity may be reached by a path not passing through a canonical parent 5686 * activity.</p> 5687 * 5688 * <p>This method should be used when performing up navigation from within the same task 5689 * as the destination. If up navigation should cross tasks in some cases, see 5690 * {@link #shouldUpRecreateTask(Intent)}.</p> 5691 * 5692 * @param upIntent An intent representing the target destination for up navigation 5693 * 5694 * @return true if up navigation successfully reached the activity indicated by upIntent and 5695 * upIntent was delivered to it. false if an instance of the indicated activity could 5696 * not be found and this activity was simply finished normally. 5697 */ 5698 public boolean navigateUpTo(Intent upIntent) { 5699 if (mParent == null) { 5700 ComponentName destInfo = upIntent.getComponent(); 5701 if (destInfo == null) { 5702 destInfo = upIntent.resolveActivity(getPackageManager()); 5703 if (destInfo == null) { 5704 return false; 5705 } 5706 upIntent = new Intent(upIntent); 5707 upIntent.setComponent(destInfo); 5708 } 5709 int resultCode; 5710 Intent resultData; 5711 synchronized (this) { 5712 resultCode = mResultCode; 5713 resultData = mResultData; 5714 } 5715 if (resultData != null) { 5716 resultData.prepareToLeaveProcess(); 5717 } 5718 try { 5719 upIntent.prepareToLeaveProcess(); 5720 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 5721 resultCode, resultData); 5722 } catch (RemoteException e) { 5723 return false; 5724 } 5725 } else { 5726 return mParent.navigateUpToFromChild(this, upIntent); 5727 } 5728 } 5729 5730 /** 5731 * This is called when a child activity of this one calls its 5732 * {@link #navigateUpTo} method. The default implementation simply calls 5733 * navigateUpTo(upIntent) on this activity (the parent). 5734 * 5735 * @param child The activity making the call. 5736 * @param upIntent An intent representing the target destination for up navigation 5737 * 5738 * @return true if up navigation successfully reached the activity indicated by upIntent and 5739 * upIntent was delivered to it. false if an instance of the indicated activity could 5740 * not be found and this activity was simply finished normally. 5741 */ 5742 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 5743 return navigateUpTo(upIntent); 5744 } 5745 5746 /** 5747 * Obtain an {@link Intent} that will launch an explicit target activity specified by 5748 * this activity's logical parent. The logical parent is named in the application's manifest 5749 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 5750 * Activity subclasses may override this method to modify the Intent returned by 5751 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 5752 * the parent intent entirely. 5753 * 5754 * @return a new Intent targeting the defined parent of this activity or null if 5755 * there is no valid parent. 5756 */ 5757 @Nullable 5758 public Intent getParentActivityIntent() { 5759 final String parentName = mActivityInfo.parentActivityName; 5760 if (TextUtils.isEmpty(parentName)) { 5761 return null; 5762 } 5763 5764 // If the parent itself has no parent, generate a main activity intent. 5765 final ComponentName target = new ComponentName(this, parentName); 5766 try { 5767 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 5768 final String parentActivity = parentInfo.parentActivityName; 5769 final Intent parentIntent = parentActivity == null 5770 ? Intent.makeMainActivity(target) 5771 : new Intent().setComponent(target); 5772 return parentIntent; 5773 } catch (NameNotFoundException e) { 5774 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 5775 "' in manifest"); 5776 return null; 5777 } 5778 } 5779 5780 /** 5781 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5782 * android.view.View, String)} was used to start an Activity, <var>callback</var> 5783 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 5784 * {@link Window#FEATURE_CONTENT_TRANSITIONS}. 5785 * 5786 * @param callback Used to manipulate shared element transitions on the launched Activity. 5787 */ 5788 public void setEnterSharedElementCallback(SharedElementCallback callback) { 5789 if (callback == null) { 5790 callback = SharedElementCallback.NULL_CALLBACK; 5791 } 5792 mEnterTransitionListener = callback; 5793 } 5794 5795 /** 5796 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5797 * android.view.View, String)} was used to start an Activity, <var>callback</var> 5798 * will be called to handle shared elements on the <i>launching</i> Activity. Most 5799 * calls will only come when returning from the started Activity. 5800 * This requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 5801 * 5802 * @param callback Used to manipulate shared element transitions on the launching Activity. 5803 */ 5804 public void setExitSharedElementCallback(SharedElementCallback callback) { 5805 if (callback == null) { 5806 callback = SharedElementCallback.NULL_CALLBACK; 5807 } 5808 mExitTransitionListener = callback; 5809 } 5810 5811 /** 5812 * Postpone the entering activity transition when Activity was started with 5813 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5814 * android.util.Pair[])}. 5815 * <p>This method gives the Activity the ability to delay starting the entering and 5816 * shared element transitions until all data is loaded. Until then, the Activity won't 5817 * draw into its window, leaving the window transparent. This may also cause the 5818 * returning animation to be delayed until data is ready. This method should be 5819 * called in {@link #onCreate(android.os.Bundle)} or in 5820 * {@link #onActivityReenter(int, android.content.Intent)}. 5821 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 5822 * start the transitions. If the Activity did not use 5823 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5824 * android.util.Pair[])}, then this method does nothing.</p> 5825 */ 5826 public void postponeEnterTransition() { 5827 mActivityTransitionState.postponeEnterTransition(); 5828 } 5829 5830 /** 5831 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 5832 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 5833 * to have your Activity start drawing. 5834 */ 5835 public void startPostponedEnterTransition() { 5836 mActivityTransitionState.startPostponedEnterTransition(); 5837 } 5838 5839 // ------------------ Internal API ------------------ 5840 5841 final void setParent(Activity parent) { 5842 mParent = parent; 5843 } 5844 5845 final void attach(Context context, ActivityThread aThread, 5846 Instrumentation instr, IBinder token, int ident, 5847 Application application, Intent intent, ActivityInfo info, 5848 CharSequence title, Activity parent, String id, 5849 NonConfigurationInstances lastNonConfigurationInstances, 5850 Configuration config, IVoiceInteractor voiceInteractor) { 5851 attachBaseContext(context); 5852 5853 mFragments.attachActivity(this, mContainer, null); 5854 5855 mWindow = PolicyManager.makeNewWindow(this); 5856 mWindow.setCallback(this); 5857 mWindow.setOnWindowDismissedCallback(this); 5858 mWindow.getLayoutInflater().setPrivateFactory(this); 5859 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 5860 mWindow.setSoftInputMode(info.softInputMode); 5861 } 5862 if (info.uiOptions != 0) { 5863 mWindow.setUiOptions(info.uiOptions); 5864 } 5865 mUiThread = Thread.currentThread(); 5866 5867 mMainThread = aThread; 5868 mInstrumentation = instr; 5869 mToken = token; 5870 mIdent = ident; 5871 mApplication = application; 5872 mIntent = intent; 5873 mComponent = intent.getComponent(); 5874 mActivityInfo = info; 5875 mTitle = title; 5876 mParent = parent; 5877 mEmbeddedID = id; 5878 mLastNonConfigurationInstances = lastNonConfigurationInstances; 5879 if (voiceInteractor != null) { 5880 if (lastNonConfigurationInstances != null) { 5881 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 5882 } else { 5883 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 5884 Looper.myLooper()); 5885 } 5886 } 5887 5888 mWindow.setWindowManager( 5889 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 5890 mToken, mComponent.flattenToString(), 5891 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 5892 if (mParent != null) { 5893 mWindow.setContainer(mParent.getWindow()); 5894 } 5895 mWindowManager = mWindow.getWindowManager(); 5896 mCurrentConfig = config; 5897 } 5898 5899 /** @hide */ 5900 public final IBinder getActivityToken() { 5901 return mParent != null ? mParent.getActivityToken() : mToken; 5902 } 5903 5904 final void performCreateCommon() { 5905 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 5906 com.android.internal.R.styleable.Window_windowNoDisplay, false); 5907 mFragments.dispatchActivityCreated(); 5908 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 5909 } 5910 5911 final void performCreate(Bundle icicle) { 5912 onCreate(icicle); 5913 mActivityTransitionState.readState(icicle); 5914 performCreateCommon(); 5915 } 5916 5917 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 5918 onCreate(icicle, persistentState); 5919 mActivityTransitionState.readState(icicle); 5920 performCreateCommon(); 5921 } 5922 5923 final void performStart() { 5924 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 5925 mFragments.noteStateNotSaved(); 5926 mCalled = false; 5927 mFragments.execPendingActions(); 5928 mInstrumentation.callActivityOnStart(this); 5929 if (!mCalled) { 5930 throw new SuperNotCalledException( 5931 "Activity " + mComponent.toShortString() + 5932 " did not call through to super.onStart()"); 5933 } 5934 mFragments.dispatchStart(); 5935 if (mAllLoaderManagers != null) { 5936 final int N = mAllLoaderManagers.size(); 5937 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 5938 for (int i=N-1; i>=0; i--) { 5939 loaders[i] = mAllLoaderManagers.valueAt(i); 5940 } 5941 for (int i=0; i<N; i++) { 5942 LoaderManagerImpl lm = loaders[i]; 5943 lm.finishRetain(); 5944 lm.doReportStart(); 5945 } 5946 } 5947 mActivityTransitionState.enterReady(this); 5948 } 5949 5950 final void performRestart() { 5951 mFragments.noteStateNotSaved(); 5952 5953 if (mStopped) { 5954 mStopped = false; 5955 if (mToken != null && mParent == null) { 5956 WindowManagerGlobal.getInstance().setStoppedState(mToken, false); 5957 } 5958 5959 synchronized (mManagedCursors) { 5960 final int N = mManagedCursors.size(); 5961 for (int i=0; i<N; i++) { 5962 ManagedCursor mc = mManagedCursors.get(i); 5963 if (mc.mReleased || mc.mUpdated) { 5964 if (!mc.mCursor.requery()) { 5965 if (getApplicationInfo().targetSdkVersion 5966 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5967 throw new IllegalStateException( 5968 "trying to requery an already closed cursor " 5969 + mc.mCursor); 5970 } 5971 } 5972 mc.mReleased = false; 5973 mc.mUpdated = false; 5974 } 5975 } 5976 } 5977 5978 mCalled = false; 5979 mInstrumentation.callActivityOnRestart(this); 5980 if (!mCalled) { 5981 throw new SuperNotCalledException( 5982 "Activity " + mComponent.toShortString() + 5983 " did not call through to super.onRestart()"); 5984 } 5985 performStart(); 5986 } 5987 } 5988 5989 final void performResume() { 5990 performRestart(); 5991 5992 mFragments.execPendingActions(); 5993 5994 mLastNonConfigurationInstances = null; 5995 5996 mCalled = false; 5997 // mResumed is set by the instrumentation 5998 mInstrumentation.callActivityOnResume(this); 5999 if (!mCalled) { 6000 throw new SuperNotCalledException( 6001 "Activity " + mComponent.toShortString() + 6002 " did not call through to super.onResume()"); 6003 } 6004 6005 // Now really resume, and install the current status bar and menu. 6006 mCalled = false; 6007 6008 mFragments.dispatchResume(); 6009 mFragments.execPendingActions(); 6010 6011 onPostResume(); 6012 if (!mCalled) { 6013 throw new SuperNotCalledException( 6014 "Activity " + mComponent.toShortString() + 6015 " did not call through to super.onPostResume()"); 6016 } 6017 } 6018 6019 final void performPause() { 6020 mDoReportFullyDrawn = false; 6021 mFragments.dispatchPause(); 6022 mCalled = false; 6023 onPause(); 6024 mResumed = false; 6025 if (!mCalled && getApplicationInfo().targetSdkVersion 6026 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 6027 throw new SuperNotCalledException( 6028 "Activity " + mComponent.toShortString() + 6029 " did not call through to super.onPause()"); 6030 } 6031 mResumed = false; 6032 } 6033 6034 final void performUserLeaving() { 6035 onUserInteraction(); 6036 onUserLeaveHint(); 6037 } 6038 6039 final void performStop() { 6040 mDoReportFullyDrawn = false; 6041 if (mLoadersStarted) { 6042 mLoadersStarted = false; 6043 if (mLoaderManager != null) { 6044 if (!mChangingConfigurations) { 6045 mLoaderManager.doStop(); 6046 } else { 6047 mLoaderManager.doRetain(); 6048 } 6049 } 6050 } 6051 6052 if (!mStopped) { 6053 if (mWindow != null) { 6054 mWindow.closeAllPanels(); 6055 } 6056 6057 if (mToken != null && mParent == null) { 6058 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 6059 } 6060 6061 mFragments.dispatchStop(); 6062 6063 mCalled = false; 6064 mInstrumentation.callActivityOnStop(this); 6065 if (!mCalled) { 6066 throw new SuperNotCalledException( 6067 "Activity " + mComponent.toShortString() + 6068 " did not call through to super.onStop()"); 6069 } 6070 6071 synchronized (mManagedCursors) { 6072 final int N = mManagedCursors.size(); 6073 for (int i=0; i<N; i++) { 6074 ManagedCursor mc = mManagedCursors.get(i); 6075 if (!mc.mReleased) { 6076 mc.mCursor.deactivate(); 6077 mc.mReleased = true; 6078 } 6079 } 6080 } 6081 6082 mStopped = true; 6083 } 6084 mResumed = false; 6085 } 6086 6087 final void performDestroy() { 6088 mDestroyed = true; 6089 mWindow.destroy(); 6090 mFragments.dispatchDestroy(); 6091 onDestroy(); 6092 if (mLoaderManager != null) { 6093 mLoaderManager.doDestroy(); 6094 } 6095 if (mVoiceInteractor != null) { 6096 mVoiceInteractor.detachActivity(); 6097 } 6098 } 6099 6100 /** 6101 * @hide 6102 */ 6103 public final boolean isResumed() { 6104 return mResumed; 6105 } 6106 6107 void dispatchActivityResult(String who, int requestCode, 6108 int resultCode, Intent data) { 6109 if (false) Log.v( 6110 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 6111 + ", resCode=" + resultCode + ", data=" + data); 6112 mFragments.noteStateNotSaved(); 6113 if (who == null) { 6114 onActivityResult(requestCode, resultCode, data); 6115 } else { 6116 Fragment frag = mFragments.findFragmentByWho(who); 6117 if (frag != null) { 6118 frag.onActivityResult(requestCode, resultCode, data); 6119 } 6120 } 6121 } 6122 6123 /** 6124 * Request to put this Activity in a mode where the user is locked to the 6125 * current task. 6126 * 6127 * This will prevent the user from launching other apps, going to settings, 6128 * or reaching the home screen. 6129 * 6130 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true 6131 * for this component then the app will go directly into Lock Task mode. The user 6132 * will not be able to exit this mode until {@link Activity#stopLockTask()} is called. 6133 * 6134 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 6135 * then the system will prompt the user with a dialog requesting permission to enter 6136 * this mode. When entered through this method the user can exit at any time through 6137 * an action described by the request dialog. Calling stopLockTask will also exit the 6138 * mode. 6139 */ 6140 public void startLockTask() { 6141 try { 6142 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 6143 } catch (RemoteException e) { 6144 } 6145 } 6146 6147 /** 6148 * Allow the user to switch away from the current task. 6149 * 6150 * Called to end the mode started by {@link Activity#startLockTask}. This 6151 * can only be called by activities that have successfully called 6152 * startLockTask previously. 6153 * 6154 * This will allow the user to exit this app and move onto other activities. 6155 */ 6156 public void stopLockTask() { 6157 try { 6158 ActivityManagerNative.getDefault().stopLockTaskMode(); 6159 } catch (RemoteException e) { 6160 } 6161 } 6162 6163 /** 6164 * Interface for informing a translucent {@link Activity} once all visible activities below it 6165 * have completed drawing. This is necessary only after an {@link Activity} has been made 6166 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 6167 * translucent again following a call to {@link 6168 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 6169 * ActivityOptions)} 6170 * 6171 * @hide 6172 */ 6173 @SystemApi 6174 public interface TranslucentConversionListener { 6175 /** 6176 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 6177 * below the top one have been redrawn. Following this callback it is safe to make the top 6178 * Activity translucent because the underlying Activity has been drawn. 6179 * 6180 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 6181 * occurred waiting for the Activity to complete drawing. 6182 * 6183 * @see Activity#convertFromTranslucent() 6184 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 6185 */ 6186 public void onTranslucentConversionComplete(boolean drawComplete); 6187 } 6188} 6189