Activity.java revision 41a2e337447a7d6f3e9d66af35e90429e3088be6
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.transition.Scene; 21import android.transition.TransitionManager; 22import android.util.ArrayMap; 23import android.util.SuperNotCalledException; 24import android.widget.Toolbar; 25import com.android.internal.app.IVoiceInteractor; 26import com.android.internal.app.WindowDecorActionBar; 27import com.android.internal.app.ToolbarActionBar; 28import com.android.internal.policy.PolicyManager; 29 30import android.annotation.IntDef; 31import android.annotation.Nullable; 32import android.app.admin.DevicePolicyManager; 33import android.content.ComponentCallbacks2; 34import android.content.ComponentName; 35import android.content.ContentResolver; 36import android.content.Context; 37import android.content.CursorLoader; 38import android.content.IIntentSender; 39import android.content.Intent; 40import android.content.IntentSender; 41import android.content.SharedPreferences; 42import android.content.pm.ActivityInfo; 43import android.content.pm.PackageManager; 44import android.content.pm.PackageManager.NameNotFoundException; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.content.res.TypedArray; 48import android.database.Cursor; 49import android.graphics.Bitmap; 50import android.graphics.Canvas; 51import android.graphics.drawable.Drawable; 52import android.media.AudioManager; 53import android.net.Uri; 54import android.os.Build; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.IBinder; 58import android.os.Looper; 59import android.os.Parcelable; 60import android.os.RemoteException; 61import android.os.StrictMode; 62import android.os.UserHandle; 63import android.text.Selection; 64import android.text.SpannableStringBuilder; 65import android.text.TextUtils; 66import android.text.method.TextKeyListener; 67import android.util.AttributeSet; 68import android.util.EventLog; 69import android.util.Log; 70import android.util.PrintWriterPrinter; 71import android.util.Slog; 72import android.util.SparseArray; 73import android.view.ActionMode; 74import android.view.ContextMenu; 75import android.view.ContextMenu.ContextMenuInfo; 76import android.view.ContextThemeWrapper; 77import android.view.KeyEvent; 78import android.view.LayoutInflater; 79import android.view.Menu; 80import android.view.MenuInflater; 81import android.view.MenuItem; 82import android.view.MotionEvent; 83import android.view.View; 84import android.view.View.OnCreateContextMenuListener; 85import android.view.ViewGroup; 86import android.view.ViewGroup.LayoutParams; 87import android.view.ViewManager; 88import android.view.Window; 89import android.view.WindowManager; 90import android.view.WindowManagerGlobal; 91import android.view.accessibility.AccessibilityEvent; 92import android.widget.AdapterView; 93 94import java.io.FileDescriptor; 95import java.io.PrintWriter; 96import java.lang.annotation.Retention; 97import java.lang.annotation.RetentionPolicy; 98import java.util.ArrayList; 99import java.util.HashMap; 100 101/** 102 * An activity is a single, focused thing that the user can do. Almost all 103 * activities interact with the user, so the Activity class takes care of 104 * creating a window for you in which you can place your UI with 105 * {@link #setContentView}. While activities are often presented to the user 106 * as full-screen windows, they can also be used in other ways: as floating 107 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 108 * or embedded inside of another activity (using {@link ActivityGroup}). 109 * 110 * There are two methods almost all subclasses of Activity will implement: 111 * 112 * <ul> 113 * <li> {@link #onCreate} is where you initialize your activity. Most 114 * importantly, here you will usually call {@link #setContentView(int)} 115 * with a layout resource defining your UI, and using {@link #findViewById} 116 * to retrieve the widgets in that UI that you need to interact with 117 * programmatically. 118 * 119 * <li> {@link #onPause} is where you deal with the user leaving your 120 * activity. Most importantly, any changes made by the user should at this 121 * point be committed (usually to the 122 * {@link android.content.ContentProvider} holding the data). 123 * </ul> 124 * 125 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 126 * activity classes must have a corresponding 127 * {@link android.R.styleable#AndroidManifestActivity <activity>} 128 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 129 * 130 * <p>Topics covered here: 131 * <ol> 132 * <li><a href="#Fragments">Fragments</a> 133 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 134 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 135 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 136 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 137 * <li><a href="#Permissions">Permissions</a> 138 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 139 * </ol> 140 * 141 * <div class="special reference"> 142 * <h3>Developer Guides</h3> 143 * <p>The Activity class is an important part of an application's overall lifecycle, 144 * and the way activities are launched and put together is a fundamental 145 * part of the platform's application model. For a detailed perspective on the structure of an 146 * Android application and how activities behave, please read the 147 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 148 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 149 * developer guides.</p> 150 * 151 * <p>You can also find a detailed discussion about how to create activities in the 152 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 153 * developer guide.</p> 154 * </div> 155 * 156 * <a name="Fragments"></a> 157 * <h3>Fragments</h3> 158 * 159 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 160 * implementations can make use of the {@link Fragment} class to better 161 * modularize their code, build more sophisticated user interfaces for larger 162 * screens, and help scale their application between small and large screens. 163 * 164 * <a name="ActivityLifecycle"></a> 165 * <h3>Activity Lifecycle</h3> 166 * 167 * <p>Activities in the system are managed as an <em>activity stack</em>. 168 * When a new activity is started, it is placed on the top of the stack 169 * and becomes the running activity -- the previous activity always remains 170 * below it in the stack, and will not come to the foreground again until 171 * the new activity exits.</p> 172 * 173 * <p>An activity has essentially four states:</p> 174 * <ul> 175 * <li> If an activity in the foreground of the screen (at the top of 176 * the stack), 177 * it is <em>active</em> or <em>running</em>. </li> 178 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 179 * or transparent activity has focus on top of your activity), it 180 * is <em>paused</em>. A paused activity is completely alive (it 181 * maintains all state and member information and remains attached to 182 * the window manager), but can be killed by the system in extreme 183 * low memory situations. 184 * <li>If an activity is completely obscured by another activity, 185 * it is <em>stopped</em>. It still retains all state and member information, 186 * however, it is no longer visible to the user so its window is hidden 187 * and it will often be killed by the system when memory is needed 188 * elsewhere.</li> 189 * <li>If an activity is paused or stopped, the system can drop the activity 190 * from memory by either asking it to finish, or simply killing its 191 * process. When it is displayed again to the user, it must be 192 * completely restarted and restored to its previous state.</li> 193 * </ul> 194 * 195 * <p>The following diagram shows the important state paths of an Activity. 196 * The square rectangles represent callback methods you can implement to 197 * perform operations when the Activity moves between states. The colored 198 * ovals are major states the Activity can be in.</p> 199 * 200 * <p><img src="../../../images/activity_lifecycle.png" 201 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 202 * 203 * <p>There are three key loops you may be interested in monitoring within your 204 * activity: 205 * 206 * <ul> 207 * <li>The <b>entire lifetime</b> of an activity happens between the first call 208 * to {@link android.app.Activity#onCreate} through to a single final call 209 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 210 * of "global" state in onCreate(), and release all remaining resources in 211 * onDestroy(). For example, if it has a thread running in the background 212 * to download data from the network, it may create that thread in onCreate() 213 * and then stop the thread in onDestroy(). 214 * 215 * <li>The <b>visible lifetime</b> of an activity happens between a call to 216 * {@link android.app.Activity#onStart} until a corresponding call to 217 * {@link android.app.Activity#onStop}. During this time the user can see the 218 * activity on-screen, though it may not be in the foreground and interacting 219 * with the user. Between these two methods you can maintain resources that 220 * are needed to show the activity to the user. For example, you can register 221 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 222 * that impact your UI, and unregister it in onStop() when the user no 223 * longer sees what you are displaying. The onStart() and onStop() methods 224 * can be called multiple times, as the activity becomes visible and hidden 225 * to the user. 226 * 227 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 228 * {@link android.app.Activity#onResume} until a corresponding call to 229 * {@link android.app.Activity#onPause}. During this time the activity is 230 * in front of all other activities and interacting with the user. An activity 231 * can frequently go between the resumed and paused states -- for example when 232 * the device goes to sleep, when an activity result is delivered, when a new 233 * intent is delivered -- so the code in these methods should be fairly 234 * lightweight. 235 * </ul> 236 * 237 * <p>The entire lifecycle of an activity is defined by the following 238 * Activity methods. All of these are hooks that you can override 239 * to do appropriate work when the activity changes state. All 240 * activities will implement {@link android.app.Activity#onCreate} 241 * to do their initial setup; many will also implement 242 * {@link android.app.Activity#onPause} to commit changes to data and 243 * otherwise prepare to stop interacting with the user. You should always 244 * call up to your superclass when implementing these methods.</p> 245 * 246 * </p> 247 * <pre class="prettyprint"> 248 * public class Activity extends ApplicationContext { 249 * protected void onCreate(Bundle savedInstanceState); 250 * 251 * protected void onStart(); 252 * 253 * protected void onRestart(); 254 * 255 * protected void onResume(); 256 * 257 * protected void onPause(); 258 * 259 * protected void onStop(); 260 * 261 * protected void onDestroy(); 262 * } 263 * </pre> 264 * 265 * <p>In general the movement through an activity's lifecycle looks like 266 * this:</p> 267 * 268 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 269 * <colgroup align="left" span="3" /> 270 * <colgroup align="left" /> 271 * <colgroup align="center" /> 272 * <colgroup align="center" /> 273 * 274 * <thead> 275 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 276 * </thead> 277 * 278 * <tbody> 279 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 280 * <td>Called when the activity is first created. 281 * This is where you should do all of your normal static set up: 282 * create views, bind data to lists, etc. This method also 283 * provides you with a Bundle containing the activity's previously 284 * frozen state, if there was one. 285 * <p>Always followed by <code>onStart()</code>.</td> 286 * <td align="center">No</td> 287 * <td align="center"><code>onStart()</code></td> 288 * </tr> 289 * 290 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 291 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 292 * <td>Called after your activity has been stopped, prior to it being 293 * started again. 294 * <p>Always followed by <code>onStart()</code></td> 295 * <td align="center">No</td> 296 * <td align="center"><code>onStart()</code></td> 297 * </tr> 298 * 299 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 300 * <td>Called when the activity is becoming visible to the user. 301 * <p>Followed by <code>onResume()</code> if the activity comes 302 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 303 * <td align="center">No</td> 304 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 305 * </tr> 306 * 307 * <tr><td rowspan="2" style="border-left: none;"> </td> 308 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 309 * <td>Called when the activity will start 310 * interacting with the user. At this point your activity is at 311 * the top of the activity stack, with user input going to it. 312 * <p>Always followed by <code>onPause()</code>.</td> 313 * <td align="center">No</td> 314 * <td align="center"><code>onPause()</code></td> 315 * </tr> 316 * 317 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 318 * <td>Called when the system is about to start resuming a previous 319 * activity. This is typically used to commit unsaved changes to 320 * persistent data, stop animations and other things that may be consuming 321 * CPU, etc. Implementations of this method must be very quick because 322 * the next activity will not be resumed until this method returns. 323 * <p>Followed by either <code>onResume()</code> if the activity 324 * returns back to the front, or <code>onStop()</code> if it becomes 325 * invisible to the user.</td> 326 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 327 * <td align="center"><code>onResume()</code> or<br> 328 * <code>onStop()</code></td> 329 * </tr> 330 * 331 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 332 * <td>Called when the activity is no longer visible to the user, because 333 * another activity has been resumed and is covering this one. This 334 * may happen either because a new activity is being started, an existing 335 * one is being brought in front of this one, or this one is being 336 * destroyed. 337 * <p>Followed by either <code>onRestart()</code> if 338 * this activity is coming back to interact with the user, or 339 * <code>onDestroy()</code> if this activity is going away.</td> 340 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 341 * <td align="center"><code>onRestart()</code> or<br> 342 * <code>onDestroy()</code></td> 343 * </tr> 344 * 345 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 346 * <td>The final call you receive before your 347 * activity is destroyed. This can happen either because the 348 * activity is finishing (someone called {@link Activity#finish} on 349 * it, or because the system is temporarily destroying this 350 * instance of the activity to save space. You can distinguish 351 * between these two scenarios with the {@link 352 * Activity#isFinishing} method.</td> 353 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 354 * <td align="center"><em>nothing</em></td> 355 * </tr> 356 * </tbody> 357 * </table> 358 * 359 * <p>Note the "Killable" column in the above table -- for those methods that 360 * are marked as being killable, after that method returns the process hosting the 361 * activity may killed by the system <em>at any time</em> without another line 362 * of its code being executed. Because of this, you should use the 363 * {@link #onPause} method to write any persistent data (such as user edits) 364 * to storage. In addition, the method 365 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 366 * in such a background state, allowing you to save away any dynamic instance 367 * state in your activity into the given Bundle, to be later received in 368 * {@link #onCreate} if the activity needs to be re-created. 369 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 370 * section for more information on how the lifecycle of a process is tied 371 * to the activities it is hosting. Note that it is important to save 372 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 373 * because the latter is not part of the lifecycle callbacks, so will not 374 * be called in every situation as described in its documentation.</p> 375 * 376 * <p class="note">Be aware that these semantics will change slightly between 377 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 378 * vs. those targeting prior platforms. Starting with Honeycomb, an application 379 * is not in the killable state until its {@link #onStop} has returned. This 380 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 381 * safely called after {@link #onPause()} and allows and application to safely 382 * wait until {@link #onStop()} to save persistent state.</p> 383 * 384 * <p>For those methods that are not marked as being killable, the activity's 385 * process will not be killed by the system starting from the time the method 386 * is called and continuing after it returns. Thus an activity is in the killable 387 * state, for example, between after <code>onPause()</code> to the start of 388 * <code>onResume()</code>.</p> 389 * 390 * <a name="ConfigurationChanges"></a> 391 * <h3>Configuration Changes</h3> 392 * 393 * <p>If the configuration of the device (as defined by the 394 * {@link Configuration Resources.Configuration} class) changes, 395 * then anything displaying a user interface will need to update to match that 396 * configuration. Because Activity is the primary mechanism for interacting 397 * with the user, it includes special support for handling configuration 398 * changes.</p> 399 * 400 * <p>Unless you specify otherwise, a configuration change (such as a change 401 * in screen orientation, language, input devices, etc) will cause your 402 * current activity to be <em>destroyed</em>, going through the normal activity 403 * lifecycle process of {@link #onPause}, 404 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 405 * had been in the foreground or visible to the user, once {@link #onDestroy} is 406 * called in that instance then a new instance of the activity will be 407 * created, with whatever savedInstanceState the previous instance had generated 408 * from {@link #onSaveInstanceState}.</p> 409 * 410 * <p>This is done because any application resource, 411 * including layout files, can change based on any configuration value. Thus 412 * the only safe way to handle a configuration change is to re-retrieve all 413 * resources, including layouts, drawables, and strings. Because activities 414 * must already know how to save their state and re-create themselves from 415 * that state, this is a convenient way to have an activity restart itself 416 * with a new configuration.</p> 417 * 418 * <p>In some special cases, you may want to bypass restarting of your 419 * activity based on one or more types of configuration changes. This is 420 * done with the {@link android.R.attr#configChanges android:configChanges} 421 * attribute in its manifest. For any types of configuration changes you say 422 * that you handle there, you will receive a call to your current activity's 423 * {@link #onConfigurationChanged} method instead of being restarted. If 424 * a configuration change involves any that you do not handle, however, the 425 * activity will still be restarted and {@link #onConfigurationChanged} 426 * will not be called.</p> 427 * 428 * <a name="StartingActivities"></a> 429 * <h3>Starting Activities and Getting Results</h3> 430 * 431 * <p>The {@link android.app.Activity#startActivity} 432 * method is used to start a 433 * new activity, which will be placed at the top of the activity stack. It 434 * takes a single argument, an {@link android.content.Intent Intent}, 435 * which describes the activity 436 * to be executed.</p> 437 * 438 * <p>Sometimes you want to get a result back from an activity when it 439 * ends. For example, you may start an activity that lets the user pick 440 * a person in a list of contacts; when it ends, it returns the person 441 * that was selected. To do this, you call the 442 * {@link android.app.Activity#startActivityForResult(Intent, int)} 443 * version with a second integer parameter identifying the call. The result 444 * will come back through your {@link android.app.Activity#onActivityResult} 445 * method.</p> 446 * 447 * <p>When an activity exits, it can call 448 * {@link android.app.Activity#setResult(int)} 449 * to return data back to its parent. It must always supply a result code, 450 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 451 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 452 * return back an Intent containing any additional data it wants. All of this 453 * information appears back on the 454 * parent's <code>Activity.onActivityResult()</code>, along with the integer 455 * identifier it originally supplied.</p> 456 * 457 * <p>If a child activity fails for any reason (such as crashing), the parent 458 * activity will receive a result with the code RESULT_CANCELED.</p> 459 * 460 * <pre class="prettyprint"> 461 * public class MyActivity extends Activity { 462 * ... 463 * 464 * static final int PICK_CONTACT_REQUEST = 0; 465 * 466 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 467 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 468 * // When the user center presses, let them pick a contact. 469 * startActivityForResult( 470 * new Intent(Intent.ACTION_PICK, 471 * new Uri("content://contacts")), 472 * PICK_CONTACT_REQUEST); 473 * return true; 474 * } 475 * return false; 476 * } 477 * 478 * protected void onActivityResult(int requestCode, int resultCode, 479 * Intent data) { 480 * if (requestCode == PICK_CONTACT_REQUEST) { 481 * if (resultCode == RESULT_OK) { 482 * // A contact was picked. Here we will just display it 483 * // to the user. 484 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 485 * } 486 * } 487 * } 488 * } 489 * </pre> 490 * 491 * <a name="SavingPersistentState"></a> 492 * <h3>Saving Persistent State</h3> 493 * 494 * <p>There are generally two kinds of persistent state than an activity 495 * will deal with: shared document-like data (typically stored in a SQLite 496 * database using a {@linkplain android.content.ContentProvider content provider}) 497 * and internal state such as user preferences.</p> 498 * 499 * <p>For content provider data, we suggest that activities use a 500 * "edit in place" user model. That is, any edits a user makes are effectively 501 * made immediately without requiring an additional confirmation step. 502 * Supporting this model is generally a simple matter of following two rules:</p> 503 * 504 * <ul> 505 * <li> <p>When creating a new document, the backing database entry or file for 506 * it is created immediately. For example, if the user chooses to write 507 * a new e-mail, a new entry for that e-mail is created as soon as they 508 * start entering data, so that if they go to any other activity after 509 * that point this e-mail will now appear in the list of drafts.</p> 510 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 511 * commit to the backing content provider or file any changes the user 512 * has made. This ensures that those changes will be seen by any other 513 * activity that is about to run. You will probably want to commit 514 * your data even more aggressively at key times during your 515 * activity's lifecycle: for example before starting a new 516 * activity, before finishing your own activity, when the user 517 * switches between input fields, etc.</p> 518 * </ul> 519 * 520 * <p>This model is designed to prevent data loss when a user is navigating 521 * between activities, and allows the system to safely kill an activity (because 522 * system resources are needed somewhere else) at any time after it has been 523 * paused. Note this implies 524 * that the user pressing BACK from your activity does <em>not</em> 525 * mean "cancel" -- it means to leave the activity with its current contents 526 * saved away. Canceling edits in an activity must be provided through 527 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 528 * 529 * <p>See the {@linkplain android.content.ContentProvider content package} for 530 * more information about content providers. These are a key aspect of how 531 * different activities invoke and propagate data between themselves.</p> 532 * 533 * <p>The Activity class also provides an API for managing internal persistent state 534 * associated with an activity. This can be used, for example, to remember 535 * the user's preferred initial display in a calendar (day view or week view) 536 * or the user's default home page in a web browser.</p> 537 * 538 * <p>Activity persistent state is managed 539 * with the method {@link #getPreferences}, 540 * allowing you to retrieve and 541 * modify a set of name/value pairs associated with the activity. To use 542 * preferences that are shared across multiple application components 543 * (activities, receivers, services, providers), you can use the underlying 544 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 545 * to retrieve a preferences 546 * object stored under a specific name. 547 * (Note that it is not possible to share settings data across application 548 * packages -- for that you will need a content provider.)</p> 549 * 550 * <p>Here is an excerpt from a calendar activity that stores the user's 551 * preferred view mode in its persistent settings:</p> 552 * 553 * <pre class="prettyprint"> 554 * public class CalendarActivity extends Activity { 555 * ... 556 * 557 * static final int DAY_VIEW_MODE = 0; 558 * static final int WEEK_VIEW_MODE = 1; 559 * 560 * private SharedPreferences mPrefs; 561 * private int mCurViewMode; 562 * 563 * protected void onCreate(Bundle savedInstanceState) { 564 * super.onCreate(savedInstanceState); 565 * 566 * SharedPreferences mPrefs = getSharedPreferences(); 567 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 568 * } 569 * 570 * protected void onPause() { 571 * super.onPause(); 572 * 573 * SharedPreferences.Editor ed = mPrefs.edit(); 574 * ed.putInt("view_mode", mCurViewMode); 575 * ed.commit(); 576 * } 577 * } 578 * </pre> 579 * 580 * <a name="Permissions"></a> 581 * <h3>Permissions</h3> 582 * 583 * <p>The ability to start a particular Activity can be enforced when it is 584 * declared in its 585 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 586 * tag. By doing so, other applications will need to declare a corresponding 587 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 588 * element in their own manifest to be able to start that activity. 589 * 590 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 591 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 592 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 593 * Activity access to the specific URIs in the Intent. Access will remain 594 * until the Activity has finished (it will remain across the hosting 595 * process being killed and other temporary destruction). As of 596 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 597 * was already created and a new Intent is being delivered to 598 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 599 * to the existing ones it holds. 600 * 601 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 602 * document for more information on permissions and security in general. 603 * 604 * <a name="ProcessLifecycle"></a> 605 * <h3>Process Lifecycle</h3> 606 * 607 * <p>The Android system attempts to keep application process around for as 608 * long as possible, but eventually will need to remove old processes when 609 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 610 * Lifecycle</a>, the decision about which process to remove is intimately 611 * tied to the state of the user's interaction with it. In general, there 612 * are four states a process can be in based on the activities running in it, 613 * listed here in order of importance. The system will kill less important 614 * processes (the last ones) before it resorts to killing more important 615 * processes (the first ones). 616 * 617 * <ol> 618 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 619 * that the user is currently interacting with) is considered the most important. 620 * Its process will only be killed as a last resort, if it uses more memory 621 * than is available on the device. Generally at this point the device has 622 * reached a memory paging state, so this is required in order to keep the user 623 * interface responsive. 624 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 625 * but not in the foreground, such as one sitting behind a foreground dialog) 626 * is considered extremely important and will not be killed unless that is 627 * required to keep the foreground activity running. 628 * <li> <p>A <b>background activity</b> (an activity that is not visible to 629 * the user and has been paused) is no longer critical, so the system may 630 * safely kill its process to reclaim memory for other foreground or 631 * visible processes. If its process needs to be killed, when the user navigates 632 * back to the activity (making it visible on the screen again), its 633 * {@link #onCreate} method will be called with the savedInstanceState it had previously 634 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 635 * state as the user last left it. 636 * <li> <p>An <b>empty process</b> is one hosting no activities or other 637 * application components (such as {@link Service} or 638 * {@link android.content.BroadcastReceiver} classes). These are killed very 639 * quickly by the system as memory becomes low. For this reason, any 640 * background operation you do outside of an activity must be executed in the 641 * context of an activity BroadcastReceiver or Service to ensure that the system 642 * knows it needs to keep your process around. 643 * </ol> 644 * 645 * <p>Sometimes an Activity may need to do a long-running operation that exists 646 * independently of the activity lifecycle itself. An example may be a camera 647 * application that allows you to upload a picture to a web site. The upload 648 * may take a long time, and the application should allow the user to leave 649 * the application will it is executing. To accomplish this, your Activity 650 * should start a {@link Service} in which the upload takes place. This allows 651 * the system to properly prioritize your process (considering it to be more 652 * important than other non-visible applications) for the duration of the 653 * upload, independent of whether the original activity is paused, stopped, 654 * or finished. 655 */ 656public class Activity extends ContextThemeWrapper 657 implements LayoutInflater.Factory2, 658 Window.Callback, KeyEvent.Callback, 659 OnCreateContextMenuListener, ComponentCallbacks2 { 660 private static final String TAG = "Activity"; 661 private static final boolean DEBUG_LIFECYCLE = false; 662 663 /** Standard activity result: operation canceled. */ 664 public static final int RESULT_CANCELED = 0; 665 /** Standard activity result: operation succeeded. */ 666 public static final int RESULT_OK = -1; 667 /** Start of user-defined activity results. */ 668 public static final int RESULT_FIRST_USER = 1; 669 670 static final String FRAGMENTS_TAG = "android:fragments"; 671 672 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 673 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 674 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 675 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 676 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 677 678 private static class ManagedDialog { 679 Dialog mDialog; 680 Bundle mArgs; 681 } 682 private SparseArray<ManagedDialog> mManagedDialogs; 683 684 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 685 private Instrumentation mInstrumentation; 686 private IBinder mToken; 687 private int mIdent; 688 /*package*/ String mEmbeddedID; 689 private Application mApplication; 690 /*package*/ Intent mIntent; 691 private ComponentName mComponent; 692 /*package*/ ActivityInfo mActivityInfo; 693 /*package*/ ActivityThread mMainThread; 694 Activity mParent; 695 boolean mCalled; 696 boolean mCheckedForLoaderManager; 697 boolean mLoadersStarted; 698 /*package*/ boolean mResumed; 699 private boolean mStopped; 700 boolean mFinished; 701 boolean mStartedActivity; 702 private boolean mDestroyed; 703 private boolean mDoReportFullyDrawn = true; 704 /** true if the activity is going through a transient pause */ 705 /*package*/ boolean mTemporaryPause = false; 706 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 707 /*package*/ boolean mChangingConfigurations = false; 708 /*package*/ int mConfigChangeFlags; 709 /*package*/ Configuration mCurrentConfig; 710 private SearchManager mSearchManager; 711 private MenuInflater mMenuInflater; 712 713 static final class NonConfigurationInstances { 714 Object activity; 715 HashMap<String, Object> children; 716 ArrayList<Fragment> fragments; 717 ArrayMap<String, LoaderManagerImpl> loaders; 718 } 719 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 720 721 private Window mWindow; 722 723 private WindowManager mWindowManager; 724 /*package*/ View mDecor = null; 725 /*package*/ boolean mWindowAdded = false; 726 /*package*/ boolean mVisibleFromServer = false; 727 /*package*/ boolean mVisibleFromClient = true; 728 /*package*/ ActionBar mActionBar = null; 729 private boolean mEnableDefaultActionBarUp; 730 731 private VoiceInteractor mVoiceInteractor; 732 733 private CharSequence mTitle; 734 private int mTitleColor = 0; 735 736 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 737 final FragmentContainer mContainer = new FragmentContainer() { 738 @Override 739 public View findViewById(int id) { 740 return Activity.this.findViewById(id); 741 } 742 }; 743 744 ArrayMap<String, LoaderManagerImpl> mAllLoaderManagers; 745 LoaderManagerImpl mLoaderManager; 746 747 private static final class ManagedCursor { 748 ManagedCursor(Cursor cursor) { 749 mCursor = cursor; 750 mReleased = false; 751 mUpdated = false; 752 } 753 754 private final Cursor mCursor; 755 private boolean mReleased; 756 private boolean mUpdated; 757 } 758 private final ArrayList<ManagedCursor> mManagedCursors = 759 new ArrayList<ManagedCursor>(); 760 761 // protected by synchronized (this) 762 int mResultCode = RESULT_CANCELED; 763 Intent mResultData = null; 764 private TranslucentConversionListener mTranslucentCallback; 765 private boolean mChangeCanvasToTranslucent; 766 767 private boolean mTitleReady = false; 768 769 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 770 private SpannableStringBuilder mDefaultKeySsb = null; 771 772 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 773 774 @SuppressWarnings("unused") 775 private final Object mInstanceTracker = StrictMode.trackActivity(this); 776 777 private Thread mUiThread; 778 final Handler mHandler = new Handler(); 779 private ActivityOptions mCalledActivityOptions; 780 private EnterTransitionCoordinator mEnterTransitionCoordinator; 781 782 /** Return the intent that started this activity. */ 783 public Intent getIntent() { 784 return mIntent; 785 } 786 787 /** 788 * Change the intent returned by {@link #getIntent}. This holds a 789 * reference to the given intent; it does not copy it. Often used in 790 * conjunction with {@link #onNewIntent}. 791 * 792 * @param newIntent The new Intent object to return from getIntent 793 * 794 * @see #getIntent 795 * @see #onNewIntent 796 */ 797 public void setIntent(Intent newIntent) { 798 mIntent = newIntent; 799 } 800 801 /** Return the application that owns this activity. */ 802 public final Application getApplication() { 803 return mApplication; 804 } 805 806 /** Is this activity embedded inside of another activity? */ 807 public final boolean isChild() { 808 return mParent != null; 809 } 810 811 /** Return the parent activity if this view is an embedded child. */ 812 public final Activity getParent() { 813 return mParent; 814 } 815 816 /** Retrieve the window manager for showing custom windows. */ 817 public WindowManager getWindowManager() { 818 return mWindowManager; 819 } 820 821 /** 822 * Retrieve the current {@link android.view.Window} for the activity. 823 * This can be used to directly access parts of the Window API that 824 * are not available through Activity/Screen. 825 * 826 * @return Window The current window, or null if the activity is not 827 * visual. 828 */ 829 public Window getWindow() { 830 return mWindow; 831 } 832 833 /** 834 * Return the LoaderManager for this activity, creating it if needed. 835 */ 836 public LoaderManager getLoaderManager() { 837 if (mLoaderManager != null) { 838 return mLoaderManager; 839 } 840 mCheckedForLoaderManager = true; 841 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, true); 842 return mLoaderManager; 843 } 844 845 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) { 846 if (mAllLoaderManagers == null) { 847 mAllLoaderManagers = new ArrayMap<String, LoaderManagerImpl>(); 848 } 849 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 850 if (lm == null) { 851 if (create) { 852 lm = new LoaderManagerImpl(who, this, started); 853 mAllLoaderManagers.put(who, lm); 854 } 855 } else { 856 lm.updateActivity(this); 857 } 858 return lm; 859 } 860 861 /** 862 * Calls {@link android.view.Window#getCurrentFocus} on the 863 * Window of this Activity to return the currently focused view. 864 * 865 * @return View The current View with focus or null. 866 * 867 * @see #getWindow 868 * @see android.view.Window#getCurrentFocus 869 */ 870 @Nullable 871 public View getCurrentFocus() { 872 return mWindow != null ? mWindow.getCurrentFocus() : null; 873 } 874 875 /** 876 * Called when the activity is starting. This is where most initialization 877 * should go: calling {@link #setContentView(int)} to inflate the 878 * activity's UI, using {@link #findViewById} to programmatically interact 879 * with widgets in the UI, calling 880 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 881 * cursors for data being displayed, etc. 882 * 883 * <p>You can call {@link #finish} from within this function, in 884 * which case onDestroy() will be immediately called without any of the rest 885 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 886 * {@link #onPause}, etc) executing. 887 * 888 * <p><em>Derived classes must call through to the super class's 889 * implementation of this method. If they do not, an exception will be 890 * thrown.</em></p> 891 * 892 * @param savedInstanceState If the activity is being re-initialized after 893 * previously being shut down then this Bundle contains the data it most 894 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 895 * 896 * @see #onStart 897 * @see #onSaveInstanceState 898 * @see #onRestoreInstanceState 899 * @see #onPostCreate 900 */ 901 protected void onCreate(@Nullable Bundle savedInstanceState) { 902 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 903 if (mLastNonConfigurationInstances != null) { 904 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 905 } 906 if (mActivityInfo.parentActivityName != null) { 907 if (mActionBar == null) { 908 mEnableDefaultActionBarUp = true; 909 } else { 910 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 911 } 912 } 913 if (savedInstanceState != null) { 914 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 915 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 916 ? mLastNonConfigurationInstances.fragments : null); 917 } 918 mFragments.dispatchCreate(); 919 getApplication().dispatchActivityCreated(this, savedInstanceState); 920 mCalled = true; 921 } 922 923 /** 924 * The hook for {@link ActivityThread} to restore the state of this activity. 925 * 926 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 927 * {@link #restoreManagedDialogs(android.os.Bundle)}. 928 * 929 * @param savedInstanceState contains the saved state 930 */ 931 final void performRestoreInstanceState(Bundle savedInstanceState) { 932 onRestoreInstanceState(savedInstanceState); 933 restoreManagedDialogs(savedInstanceState); 934 } 935 936 /** 937 * This method is called after {@link #onStart} when the activity is 938 * being re-initialized from a previously saved state, given here in 939 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 940 * to restore their state, but it is sometimes convenient to do it here 941 * after all of the initialization has been done or to allow subclasses to 942 * decide whether to use your default implementation. The default 943 * implementation of this method performs a restore of any view state that 944 * had previously been frozen by {@link #onSaveInstanceState}. 945 * 946 * <p>This method is called between {@link #onStart} and 947 * {@link #onPostCreate}. 948 * 949 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 950 * 951 * @see #onCreate 952 * @see #onPostCreate 953 * @see #onResume 954 * @see #onSaveInstanceState 955 */ 956 protected void onRestoreInstanceState(Bundle savedInstanceState) { 957 if (mWindow != null) { 958 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 959 if (windowState != null) { 960 mWindow.restoreHierarchyState(windowState); 961 } 962 } 963 } 964 965 /** 966 * Restore the state of any saved managed dialogs. 967 * 968 * @param savedInstanceState The bundle to restore from. 969 */ 970 private void restoreManagedDialogs(Bundle savedInstanceState) { 971 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 972 if (b == null) { 973 return; 974 } 975 976 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 977 final int numDialogs = ids.length; 978 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 979 for (int i = 0; i < numDialogs; i++) { 980 final Integer dialogId = ids[i]; 981 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 982 if (dialogState != null) { 983 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 984 // so tell createDialog() not to do it, otherwise we get an exception 985 final ManagedDialog md = new ManagedDialog(); 986 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 987 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 988 if (md.mDialog != null) { 989 mManagedDialogs.put(dialogId, md); 990 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 991 md.mDialog.onRestoreInstanceState(dialogState); 992 } 993 } 994 } 995 } 996 997 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 998 final Dialog dialog = onCreateDialog(dialogId, args); 999 if (dialog == null) { 1000 return null; 1001 } 1002 dialog.dispatchOnCreate(state); 1003 return dialog; 1004 } 1005 1006 private static String savedDialogKeyFor(int key) { 1007 return SAVED_DIALOG_KEY_PREFIX + key; 1008 } 1009 1010 private static String savedDialogArgsKeyFor(int key) { 1011 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1012 } 1013 1014 /** 1015 * Called when activity start-up is complete (after {@link #onStart} 1016 * and {@link #onRestoreInstanceState} have been called). Applications will 1017 * generally not implement this method; it is intended for system 1018 * classes to do final initialization after application code has run. 1019 * 1020 * <p><em>Derived classes must call through to the super class's 1021 * implementation of this method. If they do not, an exception will be 1022 * thrown.</em></p> 1023 * 1024 * @param savedInstanceState If the activity is being re-initialized after 1025 * previously being shut down then this Bundle contains the data it most 1026 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1027 * @see #onCreate 1028 */ 1029 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1030 if (!isChild()) { 1031 mTitleReady = true; 1032 onTitleChanged(getTitle(), getTitleColor()); 1033 } 1034 if (mEnterTransitionCoordinator != null) { 1035 mEnterTransitionCoordinator.readyToEnter(); 1036 } 1037 mCalled = true; 1038 } 1039 1040 /** 1041 * Called after {@link #onCreate} — or after {@link #onRestart} when 1042 * the activity had been stopped, but is now again being displayed to the 1043 * user. It will be followed by {@link #onResume}. 1044 * 1045 * <p><em>Derived classes must call through to the super class's 1046 * implementation of this method. If they do not, an exception will be 1047 * thrown.</em></p> 1048 * 1049 * @see #onCreate 1050 * @see #onStop 1051 * @see #onResume 1052 */ 1053 protected void onStart() { 1054 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1055 mCalled = true; 1056 1057 if (!mLoadersStarted) { 1058 mLoadersStarted = true; 1059 if (mLoaderManager != null) { 1060 mLoaderManager.doStart(); 1061 } else if (!mCheckedForLoaderManager) { 1062 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, false); 1063 } 1064 mCheckedForLoaderManager = true; 1065 } 1066 1067 getApplication().dispatchActivityStarted(this); 1068 } 1069 1070 /** 1071 * Called after {@link #onStop} when the current activity is being 1072 * re-displayed to the user (the user has navigated back to it). It will 1073 * be followed by {@link #onStart} and then {@link #onResume}. 1074 * 1075 * <p>For activities that are using raw {@link Cursor} objects (instead of 1076 * creating them through 1077 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1078 * this is usually the place 1079 * where the cursor should be requeried (because you had deactivated it in 1080 * {@link #onStop}. 1081 * 1082 * <p><em>Derived classes must call through to the super class's 1083 * implementation of this method. If they do not, an exception will be 1084 * thrown.</em></p> 1085 * 1086 * @see #onStop 1087 * @see #onStart 1088 * @see #onResume 1089 */ 1090 protected void onRestart() { 1091 mCalled = true; 1092 } 1093 1094 /** 1095 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1096 * {@link #onPause}, for your activity to start interacting with the user. 1097 * This is a good place to begin animations, open exclusive-access devices 1098 * (such as the camera), etc. 1099 * 1100 * <p>Keep in mind that onResume is not the best indicator that your activity 1101 * is visible to the user; a system window such as the keyguard may be in 1102 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1103 * activity is visible to the user (for example, to resume a game). 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 * @see #onRestoreInstanceState 1110 * @see #onRestart 1111 * @see #onPostResume 1112 * @see #onPause 1113 */ 1114 protected void onResume() { 1115 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1116 getApplication().dispatchActivityResumed(this); 1117 mCalledActivityOptions = null; 1118 mCalled = true; 1119 } 1120 1121 /** 1122 * Called when activity resume is complete (after {@link #onResume} has 1123 * been called). Applications will generally not implement this method; 1124 * it is intended for system classes to do final setup after application 1125 * resume code has run. 1126 * 1127 * <p><em>Derived classes must call through to the super class's 1128 * implementation of this method. If they do not, an exception will be 1129 * thrown.</em></p> 1130 * 1131 * @see #onResume 1132 */ 1133 protected void onPostResume() { 1134 final Window win = getWindow(); 1135 if (win != null) win.makeActive(); 1136 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1137 mCalled = true; 1138 } 1139 1140 /** 1141 * Check whether this activity is running as part of a voice interaction with the user. 1142 * If true, it should perform its interaction with the user through the 1143 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1144 */ 1145 public boolean isVoiceInteraction() { 1146 return mVoiceInteractor != null; 1147 } 1148 1149 /** 1150 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1151 * interact with this activity. 1152 */ 1153 public VoiceInteractor getVoiceInteractor() { 1154 return mVoiceInteractor; 1155 } 1156 1157 /** 1158 * This is called for activities that set launchMode to "singleTop" in 1159 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1160 * flag when calling {@link #startActivity}. In either case, when the 1161 * activity is re-launched while at the top of the activity stack instead 1162 * of a new instance of the activity being started, onNewIntent() will be 1163 * called on the existing instance with the Intent that was used to 1164 * re-launch it. 1165 * 1166 * <p>An activity will always be paused before receiving a new intent, so 1167 * you can count on {@link #onResume} being called after this method. 1168 * 1169 * <p>Note that {@link #getIntent} still returns the original Intent. You 1170 * can use {@link #setIntent} to update it to this new Intent. 1171 * 1172 * @param intent The new intent that was started for the activity. 1173 * 1174 * @see #getIntent 1175 * @see #setIntent 1176 * @see #onResume 1177 */ 1178 protected void onNewIntent(Intent intent) { 1179 } 1180 1181 /** 1182 * The hook for {@link ActivityThread} to save the state of this activity. 1183 * 1184 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1185 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1186 * 1187 * @param outState The bundle to save the state to. 1188 */ 1189 final void performSaveInstanceState(Bundle outState) { 1190 onSaveInstanceState(outState); 1191 saveManagedDialogs(outState); 1192 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1193 } 1194 1195 /** 1196 * Called to retrieve per-instance state from an activity before being killed 1197 * so that the state can be restored in {@link #onCreate} or 1198 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1199 * will be passed to both). 1200 * 1201 * <p>This method is called before an activity may be killed so that when it 1202 * comes back some time in the future it can restore its state. For example, 1203 * if activity B is launched in front of activity A, and at some point activity 1204 * A is killed to reclaim resources, activity A will have a chance to save the 1205 * current state of its user interface via this method so that when the user 1206 * returns to activity A, the state of the user interface can be restored 1207 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1208 * 1209 * <p>Do not confuse this method with activity lifecycle callbacks such as 1210 * {@link #onPause}, which is always called when an activity is being placed 1211 * in the background or on its way to destruction, or {@link #onStop} which 1212 * is called before destruction. One example of when {@link #onPause} and 1213 * {@link #onStop} is called and not this method is when a user navigates back 1214 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1215 * on B because that particular instance will never be restored, so the 1216 * system avoids calling it. An example when {@link #onPause} is called and 1217 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1218 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1219 * killed during the lifetime of B since the state of the user interface of 1220 * A will stay intact. 1221 * 1222 * <p>The default implementation takes care of most of the UI per-instance 1223 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1224 * view in the hierarchy that has an id, and by saving the id of the currently 1225 * focused view (all of which is restored by the default implementation of 1226 * {@link #onRestoreInstanceState}). If you override this method to save additional 1227 * information not captured by each individual view, you will likely want to 1228 * call through to the default implementation, otherwise be prepared to save 1229 * all of the state of each view yourself. 1230 * 1231 * <p>If called, this method will occur before {@link #onStop}. There are 1232 * no guarantees about whether it will occur before or after {@link #onPause}. 1233 * 1234 * @param outState Bundle in which to place your saved state. 1235 * 1236 * @see #onCreate 1237 * @see #onRestoreInstanceState 1238 * @see #onPause 1239 */ 1240 protected void onSaveInstanceState(Bundle outState) { 1241 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1242 Parcelable p = mFragments.saveAllState(); 1243 if (p != null) { 1244 outState.putParcelable(FRAGMENTS_TAG, p); 1245 } 1246 getApplication().dispatchActivitySaveInstanceState(this, outState); 1247 } 1248 1249 /** 1250 * Save the state of any managed dialogs. 1251 * 1252 * @param outState place to store the saved state. 1253 */ 1254 private void saveManagedDialogs(Bundle outState) { 1255 if (mManagedDialogs == null) { 1256 return; 1257 } 1258 1259 final int numDialogs = mManagedDialogs.size(); 1260 if (numDialogs == 0) { 1261 return; 1262 } 1263 1264 Bundle dialogState = new Bundle(); 1265 1266 int[] ids = new int[mManagedDialogs.size()]; 1267 1268 // save each dialog's bundle, gather the ids 1269 for (int i = 0; i < numDialogs; i++) { 1270 final int key = mManagedDialogs.keyAt(i); 1271 ids[i] = key; 1272 final ManagedDialog md = mManagedDialogs.valueAt(i); 1273 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1274 if (md.mArgs != null) { 1275 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1276 } 1277 } 1278 1279 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1280 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1281 } 1282 1283 1284 /** 1285 * Called as part of the activity lifecycle when an activity is going into 1286 * the background, but has not (yet) been killed. The counterpart to 1287 * {@link #onResume}. 1288 * 1289 * <p>When activity B is launched in front of activity A, this callback will 1290 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1291 * so be sure to not do anything lengthy here. 1292 * 1293 * <p>This callback is mostly used for saving any persistent state the 1294 * activity is editing, to present a "edit in place" model to the user and 1295 * making sure nothing is lost if there are not enough resources to start 1296 * the new activity without first killing this one. This is also a good 1297 * place to do things like stop animations and other things that consume a 1298 * noticeable amount of CPU in order to make the switch to the next activity 1299 * as fast as possible, or to close resources that are exclusive access 1300 * such as the camera. 1301 * 1302 * <p>In situations where the system needs more memory it may kill paused 1303 * processes to reclaim resources. Because of this, you should be sure 1304 * that all of your state is saved by the time you return from 1305 * this function. In general {@link #onSaveInstanceState} is used to save 1306 * per-instance state in the activity and this method is used to store 1307 * global persistent data (in content providers, files, etc.) 1308 * 1309 * <p>After receiving this call you will usually receive a following call 1310 * to {@link #onStop} (after the next activity has been resumed and 1311 * displayed), however in some cases there will be a direct call back to 1312 * {@link #onResume} without going through the stopped state. 1313 * 1314 * <p><em>Derived classes must call through to the super class's 1315 * implementation of this method. If they do not, an exception will be 1316 * thrown.</em></p> 1317 * 1318 * @see #onResume 1319 * @see #onSaveInstanceState 1320 * @see #onStop 1321 */ 1322 protected void onPause() { 1323 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1324 getApplication().dispatchActivityPaused(this); 1325 mCalled = true; 1326 } 1327 1328 /** 1329 * Called as part of the activity lifecycle when an activity is about to go 1330 * into the background as the result of user choice. For example, when the 1331 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1332 * when an incoming phone call causes the in-call Activity to be automatically 1333 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1334 * the activity being interrupted. In cases when it is invoked, this method 1335 * is called right before the activity's {@link #onPause} callback. 1336 * 1337 * <p>This callback and {@link #onUserInteraction} are intended to help 1338 * activities manage status bar notifications intelligently; specifically, 1339 * for helping activities determine the proper time to cancel a notfication. 1340 * 1341 * @see #onUserInteraction() 1342 */ 1343 protected void onUserLeaveHint() { 1344 } 1345 1346 /** 1347 * Generate a new thumbnail for this activity. This method is called before 1348 * pausing the activity, and should draw into <var>outBitmap</var> the 1349 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1350 * can use the given <var>canvas</var>, which is configured to draw into the 1351 * bitmap, for rendering if desired. 1352 * 1353 * <p>The default implementation returns fails and does not draw a thumbnail; 1354 * this will result in the platform creating its own thumbnail if needed. 1355 * 1356 * @param outBitmap The bitmap to contain the thumbnail. 1357 * @param canvas Can be used to render into the bitmap. 1358 * 1359 * @return Return true if you have drawn into the bitmap; otherwise after 1360 * you return it will be filled with a default thumbnail. 1361 * 1362 * @see #onCreateDescription 1363 * @see #onSaveInstanceState 1364 * @see #onPause 1365 */ 1366 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1367 return false; 1368 } 1369 1370 /** 1371 * Generate a new description for this activity. This method is called 1372 * before pausing the activity and can, if desired, return some textual 1373 * description of its current state to be displayed to the user. 1374 * 1375 * <p>The default implementation returns null, which will cause you to 1376 * inherit the description from the previous activity. If all activities 1377 * return null, generally the label of the top activity will be used as the 1378 * description. 1379 * 1380 * @return A description of what the user is doing. It should be short and 1381 * sweet (only a few words). 1382 * 1383 * @see #onCreateThumbnail 1384 * @see #onSaveInstanceState 1385 * @see #onPause 1386 */ 1387 @Nullable 1388 public CharSequence onCreateDescription() { 1389 return null; 1390 } 1391 1392 /** 1393 * This is called when the user is requesting an assist, to build a full 1394 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1395 * application. You can override this method to place into the bundle anything 1396 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1397 * of the assist Intent. The default implementation does nothing. 1398 * 1399 * <p>This function will be called after any global assist callbacks that had 1400 * been registered with {@link Application#registerOnProvideAssistDataListener 1401 * Application.registerOnProvideAssistDataListener}. 1402 */ 1403 public void onProvideAssistData(Bundle data) { 1404 } 1405 1406 /** 1407 * Called when you are no longer visible to the user. You will next 1408 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1409 * depending on later user activity. 1410 * 1411 * <p>Note that this method may never be called, in low memory situations 1412 * where the system does not have enough memory to keep your activity's 1413 * process running after its {@link #onPause} method is called. 1414 * 1415 * <p><em>Derived classes must call through to the super class's 1416 * implementation of this method. If they do not, an exception will be 1417 * thrown.</em></p> 1418 * 1419 * @see #onRestart 1420 * @see #onResume 1421 * @see #onSaveInstanceState 1422 * @see #onDestroy 1423 */ 1424 protected void onStop() { 1425 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1426 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1427 if (mCalledActivityOptions != null) { 1428 mCalledActivityOptions.dispatchActivityStopped(); 1429 mCalledActivityOptions = null; 1430 } 1431 getApplication().dispatchActivityStopped(this); 1432 mTranslucentCallback = null; 1433 mCalled = true; 1434 } 1435 1436 /** 1437 * Perform any final cleanup before an activity is destroyed. This can 1438 * happen either because the activity is finishing (someone called 1439 * {@link #finish} on it, or because the system is temporarily destroying 1440 * this instance of the activity to save space. You can distinguish 1441 * between these two scenarios with the {@link #isFinishing} method. 1442 * 1443 * <p><em>Note: do not count on this method being called as a place for 1444 * saving data! For example, if an activity is editing data in a content 1445 * provider, those edits should be committed in either {@link #onPause} or 1446 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1447 * free resources like threads that are associated with an activity, so 1448 * that a destroyed activity does not leave such things around while the 1449 * rest of its application is still running. There are situations where 1450 * the system will simply kill the activity's hosting process without 1451 * calling this method (or any others) in it, so it should not be used to 1452 * do things that are intended to remain around after the process goes 1453 * away. 1454 * 1455 * <p><em>Derived classes must call through to the super class's 1456 * implementation of this method. If they do not, an exception will be 1457 * thrown.</em></p> 1458 * 1459 * @see #onPause 1460 * @see #onStop 1461 * @see #finish 1462 * @see #isFinishing 1463 */ 1464 protected void onDestroy() { 1465 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1466 mCalled = true; 1467 1468 // dismiss any dialogs we are managing. 1469 if (mManagedDialogs != null) { 1470 final int numDialogs = mManagedDialogs.size(); 1471 for (int i = 0; i < numDialogs; i++) { 1472 final ManagedDialog md = mManagedDialogs.valueAt(i); 1473 if (md.mDialog.isShowing()) { 1474 md.mDialog.dismiss(); 1475 } 1476 } 1477 mManagedDialogs = null; 1478 } 1479 1480 // close any cursors we are managing. 1481 synchronized (mManagedCursors) { 1482 int numCursors = mManagedCursors.size(); 1483 for (int i = 0; i < numCursors; i++) { 1484 ManagedCursor c = mManagedCursors.get(i); 1485 if (c != null) { 1486 c.mCursor.close(); 1487 } 1488 } 1489 mManagedCursors.clear(); 1490 } 1491 1492 // Close any open search dialog 1493 if (mSearchManager != null) { 1494 mSearchManager.stopSearch(); 1495 } 1496 1497 getApplication().dispatchActivityDestroyed(this); 1498 } 1499 1500 /** 1501 * Report to the system that your app is now fully drawn, purely for diagnostic 1502 * purposes (calling it does not impact the visible behavior of the activity). 1503 * This is only used to help instrument application launch times, so that the 1504 * app can report when it is fully in a usable state; without this, the only thing 1505 * the system itself can determine is the point at which the activity's window 1506 * is <em>first</em> drawn and displayed. To participate in app launch time 1507 * measurement, you should always call this method after first launch (when 1508 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1509 * entirely drawn your UI and populated with all of the significant data. You 1510 * can safely call this method any time after first launch as well, in which case 1511 * it will simply be ignored. 1512 */ 1513 public void reportFullyDrawn() { 1514 if (mDoReportFullyDrawn) { 1515 mDoReportFullyDrawn = false; 1516 try { 1517 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1518 } catch (RemoteException e) { 1519 } 1520 } 1521 } 1522 1523 /** 1524 * Called by the system when the device configuration changes while your 1525 * activity is running. Note that this will <em>only</em> be called if 1526 * you have selected configurations you would like to handle with the 1527 * {@link android.R.attr#configChanges} attribute in your manifest. If 1528 * any configuration change occurs that is not selected to be reported 1529 * by that attribute, then instead of reporting it the system will stop 1530 * and restart the activity (to have it launched with the new 1531 * configuration). 1532 * 1533 * <p>At the time that this function has been called, your Resources 1534 * object will have been updated to return resource values matching the 1535 * new configuration. 1536 * 1537 * @param newConfig The new device configuration. 1538 */ 1539 public void onConfigurationChanged(Configuration newConfig) { 1540 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1541 mCalled = true; 1542 1543 mFragments.dispatchConfigurationChanged(newConfig); 1544 1545 if (mWindow != null) { 1546 // Pass the configuration changed event to the window 1547 mWindow.onConfigurationChanged(newConfig); 1548 } 1549 1550 if (mActionBar != null) { 1551 // Do this last; the action bar will need to access 1552 // view changes from above. 1553 mActionBar.onConfigurationChanged(newConfig); 1554 } 1555 } 1556 1557 /** 1558 * If this activity is being destroyed because it can not handle a 1559 * configuration parameter being changed (and thus its 1560 * {@link #onConfigurationChanged(Configuration)} method is 1561 * <em>not</em> being called), then you can use this method to discover 1562 * the set of changes that have occurred while in the process of being 1563 * destroyed. Note that there is no guarantee that these will be 1564 * accurate (other changes could have happened at any time), so you should 1565 * only use this as an optimization hint. 1566 * 1567 * @return Returns a bit field of the configuration parameters that are 1568 * changing, as defined by the {@link android.content.res.Configuration} 1569 * class. 1570 */ 1571 public int getChangingConfigurations() { 1572 return mConfigChangeFlags; 1573 } 1574 1575 /** 1576 * Retrieve the non-configuration instance data that was previously 1577 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1578 * be available from the initial {@link #onCreate} and 1579 * {@link #onStart} calls to the new instance, allowing you to extract 1580 * any useful dynamic state from the previous instance. 1581 * 1582 * <p>Note that the data you retrieve here should <em>only</em> be used 1583 * as an optimization for handling configuration changes. You should always 1584 * be able to handle getting a null pointer back, and an activity must 1585 * still be able to restore itself to its previous state (through the 1586 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1587 * function returns null. 1588 * 1589 * @return Returns the object previously returned by 1590 * {@link #onRetainNonConfigurationInstance()}. 1591 * 1592 * @deprecated Use the new {@link Fragment} API 1593 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1594 * available on older platforms through the Android compatibility package. 1595 */ 1596 @Nullable 1597 @Deprecated 1598 public Object getLastNonConfigurationInstance() { 1599 return mLastNonConfigurationInstances != null 1600 ? mLastNonConfigurationInstances.activity : null; 1601 } 1602 1603 /** 1604 * Called by the system, as part of destroying an 1605 * activity due to a configuration change, when it is known that a new 1606 * instance will immediately be created for the new configuration. You 1607 * can return any object you like here, including the activity instance 1608 * itself, which can later be retrieved by calling 1609 * {@link #getLastNonConfigurationInstance()} in the new activity 1610 * instance. 1611 * 1612 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1613 * or later, consider instead using a {@link Fragment} with 1614 * {@link Fragment#setRetainInstance(boolean) 1615 * Fragment.setRetainInstance(boolean}.</em> 1616 * 1617 * <p>This function is called purely as an optimization, and you must 1618 * not rely on it being called. When it is called, a number of guarantees 1619 * will be made to help optimize configuration switching: 1620 * <ul> 1621 * <li> The function will be called between {@link #onStop} and 1622 * {@link #onDestroy}. 1623 * <li> A new instance of the activity will <em>always</em> be immediately 1624 * created after this one's {@link #onDestroy()} is called. In particular, 1625 * <em>no</em> messages will be dispatched during this time (when the returned 1626 * object does not have an activity to be associated with). 1627 * <li> The object you return here will <em>always</em> be available from 1628 * the {@link #getLastNonConfigurationInstance()} method of the following 1629 * activity instance as described there. 1630 * </ul> 1631 * 1632 * <p>These guarantees are designed so that an activity can use this API 1633 * to propagate extensive state from the old to new activity instance, from 1634 * loaded bitmaps, to network connections, to evenly actively running 1635 * threads. Note that you should <em>not</em> propagate any data that 1636 * may change based on the configuration, including any data loaded from 1637 * resources such as strings, layouts, or drawables. 1638 * 1639 * <p>The guarantee of no message handling during the switch to the next 1640 * activity simplifies use with active objects. For example if your retained 1641 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1642 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1643 * not be called from the call here until you execute the next instance's 1644 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1645 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1646 * running in a separate thread.) 1647 * 1648 * @return Return any Object holding the desired state to propagate to the 1649 * next activity instance. 1650 * 1651 * @deprecated Use the new {@link Fragment} API 1652 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1653 * available on older platforms through the Android compatibility package. 1654 */ 1655 public Object onRetainNonConfigurationInstance() { 1656 return null; 1657 } 1658 1659 /** 1660 * Retrieve the non-configuration instance data that was previously 1661 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1662 * be available from the initial {@link #onCreate} and 1663 * {@link #onStart} calls to the new instance, allowing you to extract 1664 * any useful dynamic state from the previous instance. 1665 * 1666 * <p>Note that the data you retrieve here should <em>only</em> be used 1667 * as an optimization for handling configuration changes. You should always 1668 * be able to handle getting a null pointer back, and an activity must 1669 * still be able to restore itself to its previous state (through the 1670 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1671 * function returns null. 1672 * 1673 * @return Returns the object previously returned by 1674 * {@link #onRetainNonConfigurationChildInstances()} 1675 */ 1676 @Nullable 1677 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1678 return mLastNonConfigurationInstances != null 1679 ? mLastNonConfigurationInstances.children : null; 1680 } 1681 1682 /** 1683 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1684 * it should return either a mapping from child activity id strings to arbitrary objects, 1685 * or null. This method is intended to be used by Activity framework subclasses that control a 1686 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1687 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1688 */ 1689 @Nullable 1690 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1691 return null; 1692 } 1693 1694 NonConfigurationInstances retainNonConfigurationInstances() { 1695 Object activity = onRetainNonConfigurationInstance(); 1696 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1697 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1698 boolean retainLoaders = false; 1699 if (mAllLoaderManagers != null) { 1700 // prune out any loader managers that were already stopped and so 1701 // have nothing useful to retain. 1702 final int N = mAllLoaderManagers.size(); 1703 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 1704 for (int i=N-1; i>=0; i--) { 1705 loaders[i] = mAllLoaderManagers.valueAt(i); 1706 } 1707 for (int i=0; i<N; i++) { 1708 LoaderManagerImpl lm = loaders[i]; 1709 if (lm.mRetaining) { 1710 retainLoaders = true; 1711 } else { 1712 lm.doDestroy(); 1713 mAllLoaderManagers.remove(lm.mWho); 1714 } 1715 } 1716 } 1717 if (activity == null && children == null && fragments == null && !retainLoaders) { 1718 return null; 1719 } 1720 1721 NonConfigurationInstances nci = new NonConfigurationInstances(); 1722 nci.activity = activity; 1723 nci.children = children; 1724 nci.fragments = fragments; 1725 nci.loaders = mAllLoaderManagers; 1726 return nci; 1727 } 1728 1729 public void onLowMemory() { 1730 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1731 mCalled = true; 1732 mFragments.dispatchLowMemory(); 1733 } 1734 1735 public void onTrimMemory(int level) { 1736 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1737 mCalled = true; 1738 mFragments.dispatchTrimMemory(level); 1739 } 1740 1741 /** 1742 * Return the FragmentManager for interacting with fragments associated 1743 * with this activity. 1744 */ 1745 public FragmentManager getFragmentManager() { 1746 return mFragments; 1747 } 1748 1749 void invalidateFragment(String who) { 1750 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1751 if (mAllLoaderManagers != null) { 1752 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 1753 if (lm != null && !lm.mRetaining) { 1754 lm.doDestroy(); 1755 mAllLoaderManagers.remove(who); 1756 } 1757 } 1758 } 1759 1760 /** 1761 * Called when a Fragment is being attached to this activity, immediately 1762 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1763 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1764 */ 1765 public void onAttachFragment(Fragment fragment) { 1766 } 1767 1768 /** 1769 * Wrapper around 1770 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1771 * that gives the resulting {@link Cursor} to call 1772 * {@link #startManagingCursor} so that the activity will manage its 1773 * lifecycle for you. 1774 * 1775 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1776 * or later, consider instead using {@link LoaderManager} instead, available 1777 * via {@link #getLoaderManager()}.</em> 1778 * 1779 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1780 * this method, because the activity will do that for you at the appropriate time. However, if 1781 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1782 * not</em> automatically close the cursor and, in that case, you must call 1783 * {@link Cursor#close()}.</p> 1784 * 1785 * @param uri The URI of the content provider to query. 1786 * @param projection List of columns to return. 1787 * @param selection SQL WHERE clause. 1788 * @param sortOrder SQL ORDER BY clause. 1789 * 1790 * @return The Cursor that was returned by query(). 1791 * 1792 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1793 * @see #startManagingCursor 1794 * @hide 1795 * 1796 * @deprecated Use {@link CursorLoader} instead. 1797 */ 1798 @Deprecated 1799 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1800 String sortOrder) { 1801 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1802 if (c != null) { 1803 startManagingCursor(c); 1804 } 1805 return c; 1806 } 1807 1808 /** 1809 * Wrapper around 1810 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1811 * that gives the resulting {@link Cursor} to call 1812 * {@link #startManagingCursor} so that the activity will manage its 1813 * lifecycle for you. 1814 * 1815 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1816 * or later, consider instead using {@link LoaderManager} instead, available 1817 * via {@link #getLoaderManager()}.</em> 1818 * 1819 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1820 * this method, because the activity will do that for you at the appropriate time. However, if 1821 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1822 * not</em> automatically close the cursor and, in that case, you must call 1823 * {@link Cursor#close()}.</p> 1824 * 1825 * @param uri The URI of the content provider to query. 1826 * @param projection List of columns to return. 1827 * @param selection SQL WHERE clause. 1828 * @param selectionArgs The arguments to selection, if any ?s are pesent 1829 * @param sortOrder SQL ORDER BY clause. 1830 * 1831 * @return The Cursor that was returned by query(). 1832 * 1833 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1834 * @see #startManagingCursor 1835 * 1836 * @deprecated Use {@link CursorLoader} instead. 1837 */ 1838 @Deprecated 1839 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1840 String[] selectionArgs, String sortOrder) { 1841 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1842 if (c != null) { 1843 startManagingCursor(c); 1844 } 1845 return c; 1846 } 1847 1848 /** 1849 * This method allows the activity to take care of managing the given 1850 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1851 * That is, when the activity is stopped it will automatically call 1852 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1853 * it will call {@link Cursor#requery} for you. When the activity is 1854 * destroyed, all managed Cursors will be closed automatically. 1855 * 1856 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1857 * or later, consider instead using {@link LoaderManager} instead, available 1858 * via {@link #getLoaderManager()}.</em> 1859 * 1860 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1861 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1862 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 1863 * <em>will not</em> automatically close the cursor and, in that case, you must call 1864 * {@link Cursor#close()}.</p> 1865 * 1866 * @param c The Cursor to be managed. 1867 * 1868 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1869 * @see #stopManagingCursor 1870 * 1871 * @deprecated Use the new {@link android.content.CursorLoader} class with 1872 * {@link LoaderManager} instead; this is also 1873 * available on older platforms through the Android compatibility package. 1874 */ 1875 @Deprecated 1876 public void startManagingCursor(Cursor c) { 1877 synchronized (mManagedCursors) { 1878 mManagedCursors.add(new ManagedCursor(c)); 1879 } 1880 } 1881 1882 /** 1883 * Given a Cursor that was previously given to 1884 * {@link #startManagingCursor}, stop the activity's management of that 1885 * cursor. 1886 * 1887 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 1888 * the system <em>will not</em> automatically close the cursor and you must call 1889 * {@link Cursor#close()}.</p> 1890 * 1891 * @param c The Cursor that was being managed. 1892 * 1893 * @see #startManagingCursor 1894 * 1895 * @deprecated Use the new {@link android.content.CursorLoader} class with 1896 * {@link LoaderManager} instead; this is also 1897 * available on older platforms through the Android compatibility package. 1898 */ 1899 @Deprecated 1900 public void stopManagingCursor(Cursor c) { 1901 synchronized (mManagedCursors) { 1902 final int N = mManagedCursors.size(); 1903 for (int i=0; i<N; i++) { 1904 ManagedCursor mc = mManagedCursors.get(i); 1905 if (mc.mCursor == c) { 1906 mManagedCursors.remove(i); 1907 break; 1908 } 1909 } 1910 } 1911 } 1912 1913 /** 1914 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1915 * this is a no-op. 1916 * @hide 1917 */ 1918 @Deprecated 1919 public void setPersistent(boolean isPersistent) { 1920 } 1921 1922 /** 1923 * Finds a view that was identified by the id attribute from the XML that 1924 * was processed in {@link #onCreate}. 1925 * 1926 * @return The view if found or null otherwise. 1927 */ 1928 public View findViewById(int id) { 1929 return getWindow().findViewById(id); 1930 } 1931 1932 /** 1933 * Retrieve a reference to this activity's ActionBar. 1934 * 1935 * @return The Activity's ActionBar, or null if it does not have one. 1936 */ 1937 @Nullable 1938 public ActionBar getActionBar() { 1939 initWindowDecorActionBar(); 1940 return mActionBar; 1941 } 1942 1943 /** 1944 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 1945 * Activity window. 1946 * 1947 * <p>When set to a non-null value the {@link #getActionBar()} method will return 1948 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 1949 * a traditional window decor action bar. The toolbar's menu will be populated with the 1950 * Activity's options menu and the navigation button will be wired through the standard 1951 * {@link android.R.id#home home} menu select action.</p> 1952 * 1953 * <p>In order to use a Toolbar within the Activity's window content the application 1954 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 1955 * 1956 * @param actionBar Toolbar to set as the Activity's action bar 1957 */ 1958 public void setActionBar(@Nullable Toolbar actionBar) { 1959 if (getActionBar() instanceof WindowDecorActionBar) { 1960 throw new IllegalStateException("This Activity already has an action bar supplied " + 1961 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 1962 "android:windowActionBar to false in your theme to use a Toolbar instead."); 1963 } 1964 mActionBar = new ToolbarActionBar(actionBar); 1965 } 1966 1967 /** 1968 * Creates a new ActionBar, locates the inflated ActionBarView, 1969 * initializes the ActionBar with the view, and sets mActionBar. 1970 */ 1971 private void initWindowDecorActionBar() { 1972 Window window = getWindow(); 1973 1974 // Initializing the window decor can change window feature flags. 1975 // Make sure that we have the correct set before performing the test below. 1976 window.getDecorView(); 1977 1978 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1979 return; 1980 } 1981 1982 mActionBar = new WindowDecorActionBar(this); 1983 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 1984 1985 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 1986 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 1987 } 1988 1989 /** 1990 * Set the activity content from a layout resource. The resource will be 1991 * inflated, adding all top-level views to the activity. 1992 * 1993 * @param layoutResID Resource ID to be inflated. 1994 * 1995 * @see #setContentView(android.view.View) 1996 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1997 */ 1998 public void setContentView(int layoutResID) { 1999 getWindow().setContentView(layoutResID); 2000 initWindowDecorActionBar(); 2001 } 2002 2003 /** 2004 * Set the activity content to an explicit view. This view is placed 2005 * directly into the activity's view hierarchy. It can itself be a complex 2006 * view hierarchy. When calling this method, the layout parameters of the 2007 * specified view are ignored. Both the width and the height of the view are 2008 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2009 * your own layout parameters, invoke 2010 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2011 * instead. 2012 * 2013 * @param view The desired content to display. 2014 * 2015 * @see #setContentView(int) 2016 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2017 */ 2018 public void setContentView(View view) { 2019 getWindow().setContentView(view); 2020 initWindowDecorActionBar(); 2021 } 2022 2023 /** 2024 * Set the activity content to an explicit view. This view is placed 2025 * directly into the activity's view hierarchy. It can itself be a complex 2026 * view hierarchy. 2027 * 2028 * @param view The desired content to display. 2029 * @param params Layout parameters for the view. 2030 * 2031 * @see #setContentView(android.view.View) 2032 * @see #setContentView(int) 2033 */ 2034 public void setContentView(View view, ViewGroup.LayoutParams params) { 2035 getWindow().setContentView(view, params); 2036 initWindowDecorActionBar(); 2037 } 2038 2039 /** 2040 * Add an additional content view to the activity. Added after any existing 2041 * ones in the activity -- existing views are NOT removed. 2042 * 2043 * @param view The desired content to display. 2044 * @param params Layout parameters for the view. 2045 */ 2046 public void addContentView(View view, ViewGroup.LayoutParams params) { 2047 getWindow().addContentView(view, params); 2048 initWindowDecorActionBar(); 2049 } 2050 2051 /** 2052 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2053 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2054 * 2055 * <p>This method will return non-null after content has been initialized (e.g. by using 2056 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2057 * 2058 * @return This window's content TransitionManager or null if none is set. 2059 */ 2060 public TransitionManager getContentTransitionManager() { 2061 return getWindow().getTransitionManager(); 2062 } 2063 2064 /** 2065 * Set the {@link TransitionManager} to use for default transitions in this window. 2066 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2067 * 2068 * @param tm The TransitionManager to use for scene changes. 2069 */ 2070 public void setContentTransitionManager(TransitionManager tm) { 2071 getWindow().setTransitionManager(tm); 2072 } 2073 2074 /** 2075 * Retrieve the {@link Scene} representing this window's current content. 2076 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2077 * 2078 * <p>This method will return null if the current content is not represented by a Scene.</p> 2079 * 2080 * @return Current Scene being shown or null 2081 */ 2082 public Scene getContentScene() { 2083 return getWindow().getContentScene(); 2084 } 2085 2086 /** 2087 * Sets whether this activity is finished when touched outside its window's 2088 * bounds. 2089 */ 2090 public void setFinishOnTouchOutside(boolean finish) { 2091 mWindow.setCloseOnTouchOutside(finish); 2092 } 2093 2094 /** @hide */ 2095 @IntDef({ 2096 DEFAULT_KEYS_DISABLE, 2097 DEFAULT_KEYS_DIALER, 2098 DEFAULT_KEYS_SHORTCUT, 2099 DEFAULT_KEYS_SEARCH_LOCAL, 2100 DEFAULT_KEYS_SEARCH_GLOBAL}) 2101 @Retention(RetentionPolicy.SOURCE) 2102 @interface DefaultKeyMode {} 2103 2104 /** 2105 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2106 * keys. 2107 * 2108 * @see #setDefaultKeyMode 2109 */ 2110 static public final int DEFAULT_KEYS_DISABLE = 0; 2111 /** 2112 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2113 * key handling. 2114 * 2115 * @see #setDefaultKeyMode 2116 */ 2117 static public final int DEFAULT_KEYS_DIALER = 1; 2118 /** 2119 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2120 * default key handling. 2121 * 2122 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2123 * 2124 * @see #setDefaultKeyMode 2125 */ 2126 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2127 /** 2128 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2129 * will start an application-defined search. (If the application or activity does not 2130 * actually define a search, the the keys will be ignored.) 2131 * 2132 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2133 * 2134 * @see #setDefaultKeyMode 2135 */ 2136 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2137 2138 /** 2139 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2140 * will start a global search (typically web search, but some platforms may define alternate 2141 * methods for global search) 2142 * 2143 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2144 * 2145 * @see #setDefaultKeyMode 2146 */ 2147 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2148 2149 /** 2150 * Select the default key handling for this activity. This controls what 2151 * will happen to key events that are not otherwise handled. The default 2152 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2153 * floor. Other modes allow you to launch the dialer 2154 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2155 * menu without requiring the menu key be held down 2156 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2157 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2158 * 2159 * <p>Note that the mode selected here does not impact the default 2160 * handling of system keys, such as the "back" and "menu" keys, and your 2161 * activity and its views always get a first chance to receive and handle 2162 * all application keys. 2163 * 2164 * @param mode The desired default key mode constant. 2165 * 2166 * @see #DEFAULT_KEYS_DISABLE 2167 * @see #DEFAULT_KEYS_DIALER 2168 * @see #DEFAULT_KEYS_SHORTCUT 2169 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2170 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2171 * @see #onKeyDown 2172 */ 2173 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2174 mDefaultKeyMode = mode; 2175 2176 // Some modes use a SpannableStringBuilder to track & dispatch input events 2177 // This list must remain in sync with the switch in onKeyDown() 2178 switch (mode) { 2179 case DEFAULT_KEYS_DISABLE: 2180 case DEFAULT_KEYS_SHORTCUT: 2181 mDefaultKeySsb = null; // not used in these modes 2182 break; 2183 case DEFAULT_KEYS_DIALER: 2184 case DEFAULT_KEYS_SEARCH_LOCAL: 2185 case DEFAULT_KEYS_SEARCH_GLOBAL: 2186 mDefaultKeySsb = new SpannableStringBuilder(); 2187 Selection.setSelection(mDefaultKeySsb,0); 2188 break; 2189 default: 2190 throw new IllegalArgumentException(); 2191 } 2192 } 2193 2194 /** 2195 * Called when a key was pressed down and not handled by any of the views 2196 * inside of the activity. So, for example, key presses while the cursor 2197 * is inside a TextView will not trigger the event (unless it is a navigation 2198 * to another object) because TextView handles its own key presses. 2199 * 2200 * <p>If the focused view didn't want this event, this method is called. 2201 * 2202 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2203 * by calling {@link #onBackPressed()}, though the behavior varies based 2204 * on the application compatibility mode: for 2205 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2206 * it will set up the dispatch to call {@link #onKeyUp} where the action 2207 * will be performed; for earlier applications, it will perform the 2208 * action immediately in on-down, as those versions of the platform 2209 * behaved. 2210 * 2211 * <p>Other additional default key handling may be performed 2212 * if configured with {@link #setDefaultKeyMode}. 2213 * 2214 * @return Return <code>true</code> to prevent this event from being propagated 2215 * further, or <code>false</code> to indicate that you have not handled 2216 * this event and it should continue to be propagated. 2217 * @see #onKeyUp 2218 * @see android.view.KeyEvent 2219 */ 2220 public boolean onKeyDown(int keyCode, KeyEvent event) { 2221 if (keyCode == KeyEvent.KEYCODE_BACK) { 2222 if (getApplicationInfo().targetSdkVersion 2223 >= Build.VERSION_CODES.ECLAIR) { 2224 event.startTracking(); 2225 } else { 2226 onBackPressed(); 2227 } 2228 return true; 2229 } 2230 2231 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2232 return false; 2233 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2234 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2235 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2236 return true; 2237 } 2238 return false; 2239 } else { 2240 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2241 boolean clearSpannable = false; 2242 boolean handled; 2243 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2244 clearSpannable = true; 2245 handled = false; 2246 } else { 2247 handled = TextKeyListener.getInstance().onKeyDown( 2248 null, mDefaultKeySsb, keyCode, event); 2249 if (handled && mDefaultKeySsb.length() > 0) { 2250 // something useable has been typed - dispatch it now. 2251 2252 final String str = mDefaultKeySsb.toString(); 2253 clearSpannable = true; 2254 2255 switch (mDefaultKeyMode) { 2256 case DEFAULT_KEYS_DIALER: 2257 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2258 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2259 startActivity(intent); 2260 break; 2261 case DEFAULT_KEYS_SEARCH_LOCAL: 2262 startSearch(str, false, null, false); 2263 break; 2264 case DEFAULT_KEYS_SEARCH_GLOBAL: 2265 startSearch(str, false, null, true); 2266 break; 2267 } 2268 } 2269 } 2270 if (clearSpannable) { 2271 mDefaultKeySsb.clear(); 2272 mDefaultKeySsb.clearSpans(); 2273 Selection.setSelection(mDefaultKeySsb,0); 2274 } 2275 return handled; 2276 } 2277 } 2278 2279 /** 2280 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2281 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2282 * the event). 2283 */ 2284 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2285 return false; 2286 } 2287 2288 /** 2289 * Called when a key was released and not handled by any of the views 2290 * inside of the activity. So, for example, key presses while the cursor 2291 * is inside a TextView will not trigger the event (unless it is a navigation 2292 * to another object) because TextView handles its own key presses. 2293 * 2294 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2295 * and go back. 2296 * 2297 * @return Return <code>true</code> to prevent this event from being propagated 2298 * further, or <code>false</code> to indicate that you have not handled 2299 * this event and it should continue to be propagated. 2300 * @see #onKeyDown 2301 * @see KeyEvent 2302 */ 2303 public boolean onKeyUp(int keyCode, KeyEvent event) { 2304 if (getApplicationInfo().targetSdkVersion 2305 >= Build.VERSION_CODES.ECLAIR) { 2306 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2307 && !event.isCanceled()) { 2308 onBackPressed(); 2309 return true; 2310 } 2311 } 2312 return false; 2313 } 2314 2315 /** 2316 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2317 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2318 * the event). 2319 */ 2320 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2321 return false; 2322 } 2323 2324 /** 2325 * Called when the activity has detected the user's press of the back 2326 * key. The default implementation simply finishes the current activity, 2327 * but you can override this to do whatever you want. 2328 */ 2329 public void onBackPressed() { 2330 if (!mFragments.popBackStackImmediate()) { 2331 finishWithTransition(); 2332 } 2333 } 2334 2335 /** 2336 * Called when a key shortcut event is not handled by any of the views in the Activity. 2337 * Override this method to implement global key shortcuts for the Activity. 2338 * Key shortcuts can also be implemented by setting the 2339 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2340 * 2341 * @param keyCode The value in event.getKeyCode(). 2342 * @param event Description of the key event. 2343 * @return True if the key shortcut was handled. 2344 */ 2345 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2346 return false; 2347 } 2348 2349 /** 2350 * Called when a touch screen event was not handled by any of the views 2351 * under it. This is most useful to process touch events that happen 2352 * outside of your window bounds, where there is no view to receive it. 2353 * 2354 * @param event The touch screen event being processed. 2355 * 2356 * @return Return true if you have consumed the event, false if you haven't. 2357 * The default implementation always returns false. 2358 */ 2359 public boolean onTouchEvent(MotionEvent event) { 2360 if (mWindow.shouldCloseOnTouch(this, event)) { 2361 finish(); 2362 return true; 2363 } 2364 2365 return false; 2366 } 2367 2368 /** 2369 * Called when the trackball was moved and not handled by any of the 2370 * views inside of the activity. So, for example, if the trackball moves 2371 * while focus is on a button, you will receive a call here because 2372 * buttons do not normally do anything with trackball events. The call 2373 * here happens <em>before</em> trackball movements are converted to 2374 * DPAD key events, which then get sent back to the view hierarchy, and 2375 * will be processed at the point for things like focus navigation. 2376 * 2377 * @param event The trackball event being processed. 2378 * 2379 * @return Return true if you have consumed the event, false if you haven't. 2380 * The default implementation always returns false. 2381 */ 2382 public boolean onTrackballEvent(MotionEvent event) { 2383 return false; 2384 } 2385 2386 /** 2387 * Called when a generic motion event was not handled by any of the 2388 * views inside of the activity. 2389 * <p> 2390 * Generic motion events describe joystick movements, mouse hovers, track pad 2391 * touches, scroll wheel movements and other input events. The 2392 * {@link MotionEvent#getSource() source} of the motion event specifies 2393 * the class of input that was received. Implementations of this method 2394 * must examine the bits in the source before processing the event. 2395 * The following code example shows how this is done. 2396 * </p><p> 2397 * Generic motion events with source class 2398 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2399 * are delivered to the view under the pointer. All other generic motion events are 2400 * delivered to the focused view. 2401 * </p><p> 2402 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2403 * handle this event. 2404 * </p> 2405 * 2406 * @param event The generic motion event being processed. 2407 * 2408 * @return Return true if you have consumed the event, false if you haven't. 2409 * The default implementation always returns false. 2410 */ 2411 public boolean onGenericMotionEvent(MotionEvent event) { 2412 return false; 2413 } 2414 2415 /** 2416 * Called whenever a key, touch, or trackball event is dispatched to the 2417 * activity. Implement this method if you wish to know that the user has 2418 * interacted with the device in some way while your activity is running. 2419 * This callback and {@link #onUserLeaveHint} are intended to help 2420 * activities manage status bar notifications intelligently; specifically, 2421 * for helping activities determine the proper time to cancel a notfication. 2422 * 2423 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2424 * be accompanied by calls to {@link #onUserInteraction}. This 2425 * ensures that your activity will be told of relevant user activity such 2426 * as pulling down the notification pane and touching an item there. 2427 * 2428 * <p>Note that this callback will be invoked for the touch down action 2429 * that begins a touch gesture, but may not be invoked for the touch-moved 2430 * and touch-up actions that follow. 2431 * 2432 * @see #onUserLeaveHint() 2433 */ 2434 public void onUserInteraction() { 2435 } 2436 2437 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2438 // Update window manager if: we have a view, that view is 2439 // attached to its parent (which will be a RootView), and 2440 // this activity is not embedded. 2441 if (mParent == null) { 2442 View decor = mDecor; 2443 if (decor != null && decor.getParent() != null) { 2444 getWindowManager().updateViewLayout(decor, params); 2445 } 2446 } 2447 } 2448 2449 public void onContentChanged() { 2450 } 2451 2452 /** 2453 * Called when the current {@link Window} of the activity gains or loses 2454 * focus. This is the best indicator of whether this activity is visible 2455 * to the user. The default implementation clears the key tracking 2456 * state, so should always be called. 2457 * 2458 * <p>Note that this provides information about global focus state, which 2459 * is managed independently of activity lifecycles. As such, while focus 2460 * changes will generally have some relation to lifecycle changes (an 2461 * activity that is stopped will not generally get window focus), you 2462 * should not rely on any particular order between the callbacks here and 2463 * those in the other lifecycle methods such as {@link #onResume}. 2464 * 2465 * <p>As a general rule, however, a resumed activity will have window 2466 * focus... unless it has displayed other dialogs or popups that take 2467 * input focus, in which case the activity itself will not have focus 2468 * when the other windows have it. Likewise, the system may display 2469 * system-level windows (such as the status bar notification panel or 2470 * a system alert) which will temporarily take window input focus without 2471 * pausing the foreground activity. 2472 * 2473 * @param hasFocus Whether the window of this activity has focus. 2474 * 2475 * @see #hasWindowFocus() 2476 * @see #onResume 2477 * @see View#onWindowFocusChanged(boolean) 2478 */ 2479 public void onWindowFocusChanged(boolean hasFocus) { 2480 } 2481 2482 /** 2483 * Called when the main window associated with the activity has been 2484 * attached to the window manager. 2485 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2486 * for more information. 2487 * @see View#onAttachedToWindow 2488 */ 2489 public void onAttachedToWindow() { 2490 } 2491 2492 /** 2493 * Called when the main window associated with the activity has been 2494 * detached from the window manager. 2495 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2496 * for more information. 2497 * @see View#onDetachedFromWindow 2498 */ 2499 public void onDetachedFromWindow() { 2500 } 2501 2502 /** 2503 * Returns true if this activity's <em>main</em> window currently has window focus. 2504 * Note that this is not the same as the view itself having focus. 2505 * 2506 * @return True if this activity's main window currently has window focus. 2507 * 2508 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2509 */ 2510 public boolean hasWindowFocus() { 2511 Window w = getWindow(); 2512 if (w != null) { 2513 View d = w.getDecorView(); 2514 if (d != null) { 2515 return d.hasWindowFocus(); 2516 } 2517 } 2518 return false; 2519 } 2520 2521 /** 2522 * Called when the main window associated with the activity has been dismissed. 2523 */ 2524 public void onWindowDismissed() { 2525 finish(); 2526 } 2527 2528 /** 2529 * Called to process key events. You can override this to intercept all 2530 * key events before they are dispatched to the window. Be sure to call 2531 * this implementation for key events that should be handled normally. 2532 * 2533 * @param event The key event. 2534 * 2535 * @return boolean Return true if this event was consumed. 2536 */ 2537 public boolean dispatchKeyEvent(KeyEvent event) { 2538 onUserInteraction(); 2539 Window win = getWindow(); 2540 if (win.superDispatchKeyEvent(event)) { 2541 return true; 2542 } 2543 View decor = mDecor; 2544 if (decor == null) decor = win.getDecorView(); 2545 return event.dispatch(this, decor != null 2546 ? decor.getKeyDispatcherState() : null, this); 2547 } 2548 2549 /** 2550 * Called to process a key shortcut event. 2551 * You can override this to intercept all key shortcut events before they are 2552 * dispatched to the window. Be sure to call this implementation for key shortcut 2553 * events that should be handled normally. 2554 * 2555 * @param event The key shortcut event. 2556 * @return True if this event was consumed. 2557 */ 2558 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2559 onUserInteraction(); 2560 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2561 return true; 2562 } 2563 return onKeyShortcut(event.getKeyCode(), event); 2564 } 2565 2566 /** 2567 * Called to process touch screen events. You can override this to 2568 * intercept all touch screen events before they are dispatched to the 2569 * window. Be sure to call this implementation for touch screen events 2570 * that should be handled normally. 2571 * 2572 * @param ev The touch screen event. 2573 * 2574 * @return boolean Return true if this event was consumed. 2575 */ 2576 public boolean dispatchTouchEvent(MotionEvent ev) { 2577 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2578 onUserInteraction(); 2579 } 2580 if (getWindow().superDispatchTouchEvent(ev)) { 2581 return true; 2582 } 2583 return onTouchEvent(ev); 2584 } 2585 2586 /** 2587 * Called to process trackball events. You can override this to 2588 * intercept all trackball events before they are dispatched to the 2589 * window. Be sure to call this implementation for trackball events 2590 * that should be handled normally. 2591 * 2592 * @param ev The trackball event. 2593 * 2594 * @return boolean Return true if this event was consumed. 2595 */ 2596 public boolean dispatchTrackballEvent(MotionEvent ev) { 2597 onUserInteraction(); 2598 if (getWindow().superDispatchTrackballEvent(ev)) { 2599 return true; 2600 } 2601 return onTrackballEvent(ev); 2602 } 2603 2604 /** 2605 * Called to process generic motion events. You can override this to 2606 * intercept all generic motion events before they are dispatched to the 2607 * window. Be sure to call this implementation for generic motion events 2608 * that should be handled normally. 2609 * 2610 * @param ev The generic motion event. 2611 * 2612 * @return boolean Return true if this event was consumed. 2613 */ 2614 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2615 onUserInteraction(); 2616 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2617 return true; 2618 } 2619 return onGenericMotionEvent(ev); 2620 } 2621 2622 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2623 event.setClassName(getClass().getName()); 2624 event.setPackageName(getPackageName()); 2625 2626 LayoutParams params = getWindow().getAttributes(); 2627 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2628 (params.height == LayoutParams.MATCH_PARENT); 2629 event.setFullScreen(isFullScreen); 2630 2631 CharSequence title = getTitle(); 2632 if (!TextUtils.isEmpty(title)) { 2633 event.getText().add(title); 2634 } 2635 2636 return true; 2637 } 2638 2639 /** 2640 * Default implementation of 2641 * {@link android.view.Window.Callback#onCreatePanelView} 2642 * for activities. This 2643 * simply returns null so that all panel sub-windows will have the default 2644 * menu behavior. 2645 */ 2646 @Nullable 2647 public View onCreatePanelView(int featureId) { 2648 return null; 2649 } 2650 2651 /** 2652 * Default implementation of 2653 * {@link android.view.Window.Callback#onCreatePanelMenu} 2654 * for activities. This calls through to the new 2655 * {@link #onCreateOptionsMenu} method for the 2656 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2657 * so that subclasses of Activity don't need to deal with feature codes. 2658 */ 2659 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2660 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2661 boolean show = onCreateOptionsMenu(menu); 2662 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2663 return show; 2664 } 2665 return false; 2666 } 2667 2668 /** 2669 * Default implementation of 2670 * {@link android.view.Window.Callback#onPreparePanel} 2671 * for activities. This 2672 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2673 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2674 * panel, so that subclasses of 2675 * Activity don't need to deal with feature codes. 2676 */ 2677 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2678 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2679 boolean goforit = onPrepareOptionsMenu(menu); 2680 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2681 return goforit; 2682 } 2683 return true; 2684 } 2685 2686 /** 2687 * {@inheritDoc} 2688 * 2689 * @return The default implementation returns true. 2690 */ 2691 public boolean onMenuOpened(int featureId, Menu menu) { 2692 if (featureId == Window.FEATURE_ACTION_BAR) { 2693 initWindowDecorActionBar(); 2694 if (mActionBar != null) { 2695 mActionBar.dispatchMenuVisibilityChanged(true); 2696 } else { 2697 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2698 } 2699 } 2700 return true; 2701 } 2702 2703 /** 2704 * Default implementation of 2705 * {@link android.view.Window.Callback#onMenuItemSelected} 2706 * for activities. This calls through to the new 2707 * {@link #onOptionsItemSelected} method for the 2708 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2709 * panel, so that subclasses of 2710 * Activity don't need to deal with feature codes. 2711 */ 2712 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2713 CharSequence titleCondensed = item.getTitleCondensed(); 2714 2715 switch (featureId) { 2716 case Window.FEATURE_OPTIONS_PANEL: 2717 // Put event logging here so it gets called even if subclass 2718 // doesn't call through to superclass's implmeentation of each 2719 // of these methods below 2720 if(titleCondensed != null) { 2721 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 2722 } 2723 if (onOptionsItemSelected(item)) { 2724 return true; 2725 } 2726 if (mFragments.dispatchOptionsItemSelected(item)) { 2727 return true; 2728 } 2729 if (item.getItemId() == android.R.id.home && mActionBar != null && 2730 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 2731 if (mParent == null) { 2732 return onNavigateUp(); 2733 } else { 2734 return mParent.onNavigateUpFromChild(this); 2735 } 2736 } 2737 return false; 2738 2739 case Window.FEATURE_CONTEXT_MENU: 2740 if(titleCondensed != null) { 2741 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 2742 } 2743 if (onContextItemSelected(item)) { 2744 return true; 2745 } 2746 return mFragments.dispatchContextItemSelected(item); 2747 2748 default: 2749 return false; 2750 } 2751 } 2752 2753 /** 2754 * Default implementation of 2755 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2756 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2757 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2758 * so that subclasses of Activity don't need to deal with feature codes. 2759 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2760 * {@link #onContextMenuClosed(Menu)} will be called. 2761 */ 2762 public void onPanelClosed(int featureId, Menu menu) { 2763 switch (featureId) { 2764 case Window.FEATURE_OPTIONS_PANEL: 2765 mFragments.dispatchOptionsMenuClosed(menu); 2766 onOptionsMenuClosed(menu); 2767 break; 2768 2769 case Window.FEATURE_CONTEXT_MENU: 2770 onContextMenuClosed(menu); 2771 break; 2772 2773 case Window.FEATURE_ACTION_BAR: 2774 initWindowDecorActionBar(); 2775 mActionBar.dispatchMenuVisibilityChanged(false); 2776 break; 2777 } 2778 } 2779 2780 /** 2781 * Declare that the options menu has changed, so should be recreated. 2782 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2783 * time it needs to be displayed. 2784 */ 2785 public void invalidateOptionsMenu() { 2786 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2787 } 2788 2789 /** 2790 * Initialize the contents of the Activity's standard options menu. You 2791 * should place your menu items in to <var>menu</var>. 2792 * 2793 * <p>This is only called once, the first time the options menu is 2794 * displayed. To update the menu every time it is displayed, see 2795 * {@link #onPrepareOptionsMenu}. 2796 * 2797 * <p>The default implementation populates the menu with standard system 2798 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2799 * they will be correctly ordered with application-defined menu items. 2800 * Deriving classes should always call through to the base implementation. 2801 * 2802 * <p>You can safely hold on to <var>menu</var> (and any items created 2803 * from it), making modifications to it as desired, until the next 2804 * time onCreateOptionsMenu() is called. 2805 * 2806 * <p>When you add items to the menu, you can implement the Activity's 2807 * {@link #onOptionsItemSelected} method to handle them there. 2808 * 2809 * @param menu The options menu in which you place your items. 2810 * 2811 * @return You must return true for the menu to be displayed; 2812 * if you return false it will not be shown. 2813 * 2814 * @see #onPrepareOptionsMenu 2815 * @see #onOptionsItemSelected 2816 */ 2817 public boolean onCreateOptionsMenu(Menu menu) { 2818 if (mParent != null) { 2819 return mParent.onCreateOptionsMenu(menu); 2820 } 2821 return true; 2822 } 2823 2824 /** 2825 * Prepare the Screen's standard options menu to be displayed. This is 2826 * called right before the menu is shown, every time it is shown. You can 2827 * use this method to efficiently enable/disable items or otherwise 2828 * dynamically modify the contents. 2829 * 2830 * <p>The default implementation updates the system menu items based on the 2831 * activity's state. Deriving classes should always call through to the 2832 * base class implementation. 2833 * 2834 * @param menu The options menu as last shown or first initialized by 2835 * onCreateOptionsMenu(). 2836 * 2837 * @return You must return true for the menu to be displayed; 2838 * if you return false it will not be shown. 2839 * 2840 * @see #onCreateOptionsMenu 2841 */ 2842 public boolean onPrepareOptionsMenu(Menu menu) { 2843 if (mParent != null) { 2844 return mParent.onPrepareOptionsMenu(menu); 2845 } 2846 return true; 2847 } 2848 2849 /** 2850 * This hook is called whenever an item in your options menu is selected. 2851 * The default implementation simply returns false to have the normal 2852 * processing happen (calling the item's Runnable or sending a message to 2853 * its Handler as appropriate). You can use this method for any items 2854 * for which you would like to do processing without those other 2855 * facilities. 2856 * 2857 * <p>Derived classes should call through to the base class for it to 2858 * perform the default menu handling.</p> 2859 * 2860 * @param item The menu item that was selected. 2861 * 2862 * @return boolean Return false to allow normal menu processing to 2863 * proceed, true to consume it here. 2864 * 2865 * @see #onCreateOptionsMenu 2866 */ 2867 public boolean onOptionsItemSelected(MenuItem item) { 2868 if (mParent != null) { 2869 return mParent.onOptionsItemSelected(item); 2870 } 2871 return false; 2872 } 2873 2874 /** 2875 * This method is called whenever the user chooses to navigate Up within your application's 2876 * activity hierarchy from the action bar. 2877 * 2878 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 2879 * was specified in the manifest for this activity or an activity-alias to it, 2880 * default Up navigation will be handled automatically. If any activity 2881 * along the parent chain requires extra Intent arguments, the Activity subclass 2882 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 2883 * to supply those arguments.</p> 2884 * 2885 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 2886 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 2887 * from the design guide for more information about navigating within your app.</p> 2888 * 2889 * <p>See the {@link TaskStackBuilder} class and the Activity methods 2890 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 2891 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 2892 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 2893 * 2894 * @return true if Up navigation completed successfully and this Activity was finished, 2895 * false otherwise. 2896 */ 2897 public boolean onNavigateUp() { 2898 // Automatically handle hierarchical Up navigation if the proper 2899 // metadata is available. 2900 Intent upIntent = getParentActivityIntent(); 2901 if (upIntent != null) { 2902 if (mActivityInfo.taskAffinity == null) { 2903 // Activities with a null affinity are special; they really shouldn't 2904 // specify a parent activity intent in the first place. Just finish 2905 // the current activity and call it a day. 2906 finish(); 2907 } else if (shouldUpRecreateTask(upIntent)) { 2908 TaskStackBuilder b = TaskStackBuilder.create(this); 2909 onCreateNavigateUpTaskStack(b); 2910 onPrepareNavigateUpTaskStack(b); 2911 b.startActivities(); 2912 2913 // We can't finishAffinity if we have a result. 2914 // Fall back and simply finish the current activity instead. 2915 if (mResultCode != RESULT_CANCELED || mResultData != null) { 2916 // Tell the developer what's going on to avoid hair-pulling. 2917 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 2918 finish(); 2919 } else { 2920 finishAffinity(); 2921 } 2922 } else { 2923 navigateUpTo(upIntent); 2924 } 2925 return true; 2926 } 2927 return false; 2928 } 2929 2930 /** 2931 * This is called when a child activity of this one attempts to navigate up. 2932 * The default implementation simply calls onNavigateUp() on this activity (the parent). 2933 * 2934 * @param child The activity making the call. 2935 */ 2936 public boolean onNavigateUpFromChild(Activity child) { 2937 return onNavigateUp(); 2938 } 2939 2940 /** 2941 * Define the synthetic task stack that will be generated during Up navigation from 2942 * a different task. 2943 * 2944 * <p>The default implementation of this method adds the parent chain of this activity 2945 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 2946 * may choose to override this method to construct the desired task stack in a different 2947 * way.</p> 2948 * 2949 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 2950 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 2951 * returned by {@link #getParentActivityIntent()}.</p> 2952 * 2953 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 2954 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 2955 * 2956 * @param builder An empty TaskStackBuilder - the application should add intents representing 2957 * the desired task stack 2958 */ 2959 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 2960 builder.addParentStack(this); 2961 } 2962 2963 /** 2964 * Prepare the synthetic task stack that will be generated during Up navigation 2965 * from a different task. 2966 * 2967 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 2968 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 2969 * If any extra data should be added to these intents before launching the new task, 2970 * the application should override this method and add that data here.</p> 2971 * 2972 * @param builder A TaskStackBuilder that has been populated with Intents by 2973 * onCreateNavigateUpTaskStack. 2974 */ 2975 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 2976 } 2977 2978 /** 2979 * This hook is called whenever the options menu is being closed (either by the user canceling 2980 * the menu with the back/menu button, or when an item is selected). 2981 * 2982 * @param menu The options menu as last shown or first initialized by 2983 * onCreateOptionsMenu(). 2984 */ 2985 public void onOptionsMenuClosed(Menu menu) { 2986 if (mParent != null) { 2987 mParent.onOptionsMenuClosed(menu); 2988 } 2989 } 2990 2991 /** 2992 * Programmatically opens the options menu. If the options menu is already 2993 * open, this method does nothing. 2994 */ 2995 public void openOptionsMenu() { 2996 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2997 } 2998 2999 /** 3000 * Progammatically closes the options menu. If the options menu is already 3001 * closed, this method does nothing. 3002 */ 3003 public void closeOptionsMenu() { 3004 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3005 } 3006 3007 /** 3008 * Called when a context menu for the {@code view} is about to be shown. 3009 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3010 * time the context menu is about to be shown and should be populated for 3011 * the view (or item inside the view for {@link AdapterView} subclasses, 3012 * this can be found in the {@code menuInfo})). 3013 * <p> 3014 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3015 * item has been selected. 3016 * <p> 3017 * It is not safe to hold onto the context menu after this method returns. 3018 * 3019 */ 3020 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3021 } 3022 3023 /** 3024 * Registers a context menu to be shown for the given view (multiple views 3025 * can show the context menu). This method will set the 3026 * {@link OnCreateContextMenuListener} on the view to this activity, so 3027 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3028 * called when it is time to show the context menu. 3029 * 3030 * @see #unregisterForContextMenu(View) 3031 * @param view The view that should show a context menu. 3032 */ 3033 public void registerForContextMenu(View view) { 3034 view.setOnCreateContextMenuListener(this); 3035 } 3036 3037 /** 3038 * Prevents a context menu to be shown for the given view. This method will remove the 3039 * {@link OnCreateContextMenuListener} on the view. 3040 * 3041 * @see #registerForContextMenu(View) 3042 * @param view The view that should stop showing a context menu. 3043 */ 3044 public void unregisterForContextMenu(View view) { 3045 view.setOnCreateContextMenuListener(null); 3046 } 3047 3048 /** 3049 * Programmatically opens the context menu for a particular {@code view}. 3050 * The {@code view} should have been added via 3051 * {@link #registerForContextMenu(View)}. 3052 * 3053 * @param view The view to show the context menu for. 3054 */ 3055 public void openContextMenu(View view) { 3056 view.showContextMenu(); 3057 } 3058 3059 /** 3060 * Programmatically closes the most recently opened context menu, if showing. 3061 */ 3062 public void closeContextMenu() { 3063 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3064 } 3065 3066 /** 3067 * This hook is called whenever an item in a context menu is selected. The 3068 * default implementation simply returns false to have the normal processing 3069 * happen (calling the item's Runnable or sending a message to its Handler 3070 * as appropriate). You can use this method for any items for which you 3071 * would like to do processing without those other facilities. 3072 * <p> 3073 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3074 * View that added this menu item. 3075 * <p> 3076 * Derived classes should call through to the base class for it to perform 3077 * the default menu handling. 3078 * 3079 * @param item The context menu item that was selected. 3080 * @return boolean Return false to allow normal context menu processing to 3081 * proceed, true to consume it here. 3082 */ 3083 public boolean onContextItemSelected(MenuItem item) { 3084 if (mParent != null) { 3085 return mParent.onContextItemSelected(item); 3086 } 3087 return false; 3088 } 3089 3090 /** 3091 * This hook is called whenever the context menu is being closed (either by 3092 * the user canceling the menu with the back/menu button, or when an item is 3093 * selected). 3094 * 3095 * @param menu The context menu that is being closed. 3096 */ 3097 public void onContextMenuClosed(Menu menu) { 3098 if (mParent != null) { 3099 mParent.onContextMenuClosed(menu); 3100 } 3101 } 3102 3103 /** 3104 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3105 */ 3106 @Deprecated 3107 protected Dialog onCreateDialog(int id) { 3108 return null; 3109 } 3110 3111 /** 3112 * Callback for creating dialogs that are managed (saved and restored) for you 3113 * by the activity. The default implementation calls through to 3114 * {@link #onCreateDialog(int)} for compatibility. 3115 * 3116 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3117 * or later, consider instead using a {@link DialogFragment} instead.</em> 3118 * 3119 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3120 * this method the first time, and hang onto it thereafter. Any dialog 3121 * that is created by this method will automatically be saved and restored 3122 * for you, including whether it is showing. 3123 * 3124 * <p>If you would like the activity to manage saving and restoring dialogs 3125 * for you, you should override this method and handle any ids that are 3126 * passed to {@link #showDialog}. 3127 * 3128 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3129 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3130 * 3131 * @param id The id of the dialog. 3132 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3133 * @return The dialog. If you return null, the dialog will not be created. 3134 * 3135 * @see #onPrepareDialog(int, Dialog, Bundle) 3136 * @see #showDialog(int, Bundle) 3137 * @see #dismissDialog(int) 3138 * @see #removeDialog(int) 3139 * 3140 * @deprecated Use the new {@link DialogFragment} class with 3141 * {@link FragmentManager} instead; this is also 3142 * available on older platforms through the Android compatibility package. 3143 */ 3144 @Nullable 3145 @Deprecated 3146 protected Dialog onCreateDialog(int id, Bundle args) { 3147 return onCreateDialog(id); 3148 } 3149 3150 /** 3151 * @deprecated Old no-arguments version of 3152 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3153 */ 3154 @Deprecated 3155 protected void onPrepareDialog(int id, Dialog dialog) { 3156 dialog.setOwnerActivity(this); 3157 } 3158 3159 /** 3160 * Provides an opportunity to prepare a managed dialog before it is being 3161 * shown. The default implementation calls through to 3162 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3163 * 3164 * <p> 3165 * Override this if you need to update a managed dialog based on the state 3166 * of the application each time it is shown. For example, a time picker 3167 * dialog might want to be updated with the current time. You should call 3168 * through to the superclass's implementation. The default implementation 3169 * will set this Activity as the owner activity on the Dialog. 3170 * 3171 * @param id The id of the managed dialog. 3172 * @param dialog The dialog. 3173 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3174 * @see #onCreateDialog(int, Bundle) 3175 * @see #showDialog(int) 3176 * @see #dismissDialog(int) 3177 * @see #removeDialog(int) 3178 * 3179 * @deprecated Use the new {@link DialogFragment} class with 3180 * {@link FragmentManager} instead; this is also 3181 * available on older platforms through the Android compatibility package. 3182 */ 3183 @Deprecated 3184 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3185 onPrepareDialog(id, dialog); 3186 } 3187 3188 /** 3189 * Simple version of {@link #showDialog(int, Bundle)} that does not 3190 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3191 * with null arguments. 3192 * 3193 * @deprecated Use the new {@link DialogFragment} class with 3194 * {@link FragmentManager} instead; this is also 3195 * available on older platforms through the Android compatibility package. 3196 */ 3197 @Deprecated 3198 public final void showDialog(int id) { 3199 showDialog(id, null); 3200 } 3201 3202 /** 3203 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3204 * will be made with the same id the first time this is called for a given 3205 * id. From thereafter, the dialog will be automatically saved and restored. 3206 * 3207 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3208 * or later, consider instead using a {@link DialogFragment} instead.</em> 3209 * 3210 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3211 * be made to provide an opportunity to do any timely preparation. 3212 * 3213 * @param id The id of the managed dialog. 3214 * @param args Arguments to pass through to the dialog. These will be saved 3215 * and restored for you. Note that if the dialog is already created, 3216 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3217 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3218 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3219 * @return Returns true if the Dialog was created; false is returned if 3220 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3221 * 3222 * @see Dialog 3223 * @see #onCreateDialog(int, Bundle) 3224 * @see #onPrepareDialog(int, Dialog, Bundle) 3225 * @see #dismissDialog(int) 3226 * @see #removeDialog(int) 3227 * 3228 * @deprecated Use the new {@link DialogFragment} class with 3229 * {@link FragmentManager} instead; this is also 3230 * available on older platforms through the Android compatibility package. 3231 */ 3232 @Nullable 3233 @Deprecated 3234 public final boolean showDialog(int id, Bundle args) { 3235 if (mManagedDialogs == null) { 3236 mManagedDialogs = new SparseArray<ManagedDialog>(); 3237 } 3238 ManagedDialog md = mManagedDialogs.get(id); 3239 if (md == null) { 3240 md = new ManagedDialog(); 3241 md.mDialog = createDialog(id, null, args); 3242 if (md.mDialog == null) { 3243 return false; 3244 } 3245 mManagedDialogs.put(id, md); 3246 } 3247 3248 md.mArgs = args; 3249 onPrepareDialog(id, md.mDialog, args); 3250 md.mDialog.show(); 3251 return true; 3252 } 3253 3254 /** 3255 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3256 * 3257 * @param id The id of the managed dialog. 3258 * 3259 * @throws IllegalArgumentException if the id was not previously shown via 3260 * {@link #showDialog(int)}. 3261 * 3262 * @see #onCreateDialog(int, Bundle) 3263 * @see #onPrepareDialog(int, Dialog, Bundle) 3264 * @see #showDialog(int) 3265 * @see #removeDialog(int) 3266 * 3267 * @deprecated Use the new {@link DialogFragment} class with 3268 * {@link FragmentManager} instead; this is also 3269 * available on older platforms through the Android compatibility package. 3270 */ 3271 @Deprecated 3272 public final void dismissDialog(int id) { 3273 if (mManagedDialogs == null) { 3274 throw missingDialog(id); 3275 } 3276 3277 final ManagedDialog md = mManagedDialogs.get(id); 3278 if (md == null) { 3279 throw missingDialog(id); 3280 } 3281 md.mDialog.dismiss(); 3282 } 3283 3284 /** 3285 * Creates an exception to throw if a user passed in a dialog id that is 3286 * unexpected. 3287 */ 3288 private IllegalArgumentException missingDialog(int id) { 3289 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3290 + "shown via Activity#showDialog"); 3291 } 3292 3293 /** 3294 * Removes any internal references to a dialog managed by this Activity. 3295 * If the dialog is showing, it will dismiss it as part of the clean up. 3296 * 3297 * <p>This can be useful if you know that you will never show a dialog again and 3298 * want to avoid the overhead of saving and restoring it in the future. 3299 * 3300 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3301 * will not throw an exception if you try to remove an ID that does not 3302 * currently have an associated dialog.</p> 3303 * 3304 * @param id The id of the managed dialog. 3305 * 3306 * @see #onCreateDialog(int, Bundle) 3307 * @see #onPrepareDialog(int, Dialog, Bundle) 3308 * @see #showDialog(int) 3309 * @see #dismissDialog(int) 3310 * 3311 * @deprecated Use the new {@link DialogFragment} class with 3312 * {@link FragmentManager} instead; this is also 3313 * available on older platforms through the Android compatibility package. 3314 */ 3315 @Deprecated 3316 public final void removeDialog(int id) { 3317 if (mManagedDialogs != null) { 3318 final ManagedDialog md = mManagedDialogs.get(id); 3319 if (md != null) { 3320 md.mDialog.dismiss(); 3321 mManagedDialogs.remove(id); 3322 } 3323 } 3324 } 3325 3326 /** 3327 * This hook is called when the user signals the desire to start a search. 3328 * 3329 * <p>You can use this function as a simple way to launch the search UI, in response to a 3330 * menu item, search button, or other widgets within your activity. Unless overidden, 3331 * calling this function is the same as calling 3332 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3333 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3334 * 3335 * <p>You can override this function to force global search, e.g. in response to a dedicated 3336 * search key, or to block search entirely (by simply returning false). 3337 * 3338 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 3339 * The default implementation always returns {@code true}. 3340 * 3341 * @see android.app.SearchManager 3342 */ 3343 public boolean onSearchRequested() { 3344 startSearch(null, false, null, false); 3345 return true; 3346 } 3347 3348 /** 3349 * This hook is called to launch the search UI. 3350 * 3351 * <p>It is typically called from onSearchRequested(), either directly from 3352 * Activity.onSearchRequested() or from an overridden version in any given 3353 * Activity. If your goal is simply to activate search, it is preferred to call 3354 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3355 * is to inject specific data such as context data, it is preferred to <i>override</i> 3356 * onSearchRequested(), so that any callers to it will benefit from the override. 3357 * 3358 * @param initialQuery Any non-null non-empty string will be inserted as 3359 * pre-entered text in the search query box. 3360 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3361 * any further typing will replace it. This is useful for cases where an entire pre-formed 3362 * query is being inserted. If false, the selection point will be placed at the end of the 3363 * inserted query. This is useful when the inserted query is text that the user entered, 3364 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3365 * if initialQuery is a non-empty string.</i> 3366 * @param appSearchData An application can insert application-specific 3367 * context here, in order to improve quality or specificity of its own 3368 * searches. This data will be returned with SEARCH intent(s). Null if 3369 * no extra data is required. 3370 * @param globalSearch If false, this will only launch the search that has been specifically 3371 * defined by the application (which is usually defined as a local search). If no default 3372 * search is defined in the current application or activity, global search will be launched. 3373 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3374 * 3375 * @see android.app.SearchManager 3376 * @see #onSearchRequested 3377 */ 3378 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3379 @Nullable Bundle appSearchData, boolean globalSearch) { 3380 ensureSearchManager(); 3381 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3382 appSearchData, globalSearch); 3383 } 3384 3385 /** 3386 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3387 * the search dialog. Made available for testing purposes. 3388 * 3389 * @param query The query to trigger. If empty, the request will be ignored. 3390 * @param appSearchData An application can insert application-specific 3391 * context here, in order to improve quality or specificity of its own 3392 * searches. This data will be returned with SEARCH intent(s). Null if 3393 * no extra data is required. 3394 */ 3395 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3396 ensureSearchManager(); 3397 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3398 } 3399 3400 /** 3401 * Request that key events come to this activity. Use this if your 3402 * activity has no views with focus, but the activity still wants 3403 * a chance to process key events. 3404 * 3405 * @see android.view.Window#takeKeyEvents 3406 */ 3407 public void takeKeyEvents(boolean get) { 3408 getWindow().takeKeyEvents(get); 3409 } 3410 3411 /** 3412 * Enable extended window features. This is a convenience for calling 3413 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3414 * 3415 * @param featureId The desired feature as defined in 3416 * {@link android.view.Window}. 3417 * @return Returns true if the requested feature is supported and now 3418 * enabled. 3419 * 3420 * @see android.view.Window#requestFeature 3421 */ 3422 public final boolean requestWindowFeature(int featureId) { 3423 return getWindow().requestFeature(featureId); 3424 } 3425 3426 /** 3427 * Convenience for calling 3428 * {@link android.view.Window#setFeatureDrawableResource}. 3429 */ 3430 public final void setFeatureDrawableResource(int featureId, int resId) { 3431 getWindow().setFeatureDrawableResource(featureId, resId); 3432 } 3433 3434 /** 3435 * Convenience for calling 3436 * {@link android.view.Window#setFeatureDrawableUri}. 3437 */ 3438 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3439 getWindow().setFeatureDrawableUri(featureId, uri); 3440 } 3441 3442 /** 3443 * Convenience for calling 3444 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3445 */ 3446 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3447 getWindow().setFeatureDrawable(featureId, drawable); 3448 } 3449 3450 /** 3451 * Convenience for calling 3452 * {@link android.view.Window#setFeatureDrawableAlpha}. 3453 */ 3454 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3455 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3456 } 3457 3458 /** 3459 * Convenience for calling 3460 * {@link android.view.Window#getLayoutInflater}. 3461 */ 3462 @NonNull 3463 public LayoutInflater getLayoutInflater() { 3464 return getWindow().getLayoutInflater(); 3465 } 3466 3467 /** 3468 * Returns a {@link MenuInflater} with this context. 3469 */ 3470 @NonNull 3471 public MenuInflater getMenuInflater() { 3472 // Make sure that action views can get an appropriate theme. 3473 if (mMenuInflater == null) { 3474 initWindowDecorActionBar(); 3475 if (mActionBar != null) { 3476 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3477 } else { 3478 mMenuInflater = new MenuInflater(this); 3479 } 3480 } 3481 return mMenuInflater; 3482 } 3483 3484 @Override 3485 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3486 boolean first) { 3487 if (mParent == null) { 3488 super.onApplyThemeResource(theme, resid, first); 3489 } else { 3490 try { 3491 theme.setTo(mParent.getTheme()); 3492 } catch (Exception e) { 3493 // Empty 3494 } 3495 theme.applyStyle(resid, false); 3496 } 3497 } 3498 3499 /** 3500 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 3501 * with no options. 3502 * 3503 * @param intent The intent to start. 3504 * @param requestCode If >= 0, this code will be returned in 3505 * onActivityResult() when the activity exits. 3506 * 3507 * @throws android.content.ActivityNotFoundException 3508 * 3509 * @see #startActivity 3510 */ 3511 public void startActivityForResult(Intent intent, int requestCode) { 3512 Bundle options = null; 3513 if (mWindow.hasFeature(Window.FEATURE_CONTENT_TRANSITIONS)) { 3514 options = ActivityOptions.makeSceneTransitionAnimation(mWindow, null).toBundle(); 3515 } 3516 startActivityForResult(intent, requestCode, options); 3517 } 3518 3519 /** 3520 * Launch an activity for which you would like a result when it finished. 3521 * When this activity exits, your 3522 * onActivityResult() method will be called with the given requestCode. 3523 * Using a negative requestCode is the same as calling 3524 * {@link #startActivity} (the activity is not launched as a sub-activity). 3525 * 3526 * <p>Note that this method should only be used with Intent protocols 3527 * that are defined to return a result. In other protocols (such as 3528 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3529 * not get the result when you expect. For example, if the activity you 3530 * are launching uses the singleTask launch mode, it will not run in your 3531 * task and thus you will immediately receive a cancel result. 3532 * 3533 * <p>As a special case, if you call startActivityForResult() with a requestCode 3534 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3535 * activity, then your window will not be displayed until a result is 3536 * returned back from the started activity. This is to avoid visible 3537 * flickering when redirecting to another activity. 3538 * 3539 * <p>This method throws {@link android.content.ActivityNotFoundException} 3540 * if there was no Activity found to run the given Intent. 3541 * 3542 * @param intent The intent to start. 3543 * @param requestCode If >= 0, this code will be returned in 3544 * onActivityResult() when the activity exits. 3545 * @param options Additional options for how the Activity should be started. 3546 * See {@link android.content.Context#startActivity(Intent, Bundle) 3547 * Context.startActivity(Intent, Bundle)} for more details. 3548 * 3549 * @throws android.content.ActivityNotFoundException 3550 * 3551 * @see #startActivity 3552 */ 3553 public void startActivityForResult(Intent intent, int requestCode, @Nullable Bundle options) { 3554 if (options != null) { 3555 ActivityOptions activityOptions = new ActivityOptions(options); 3556 activityOptions.dispatchStartExit(); 3557 mCalledActivityOptions = activityOptions; 3558 } 3559 if (mParent == null) { 3560 Instrumentation.ActivityResult ar = 3561 mInstrumentation.execStartActivity( 3562 this, mMainThread.getApplicationThread(), mToken, this, 3563 intent, requestCode, options); 3564 if (ar != null) { 3565 mMainThread.sendActivityResult( 3566 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3567 ar.getResultData()); 3568 } 3569 if (requestCode >= 0) { 3570 // If this start is requesting a result, we can avoid making 3571 // the activity visible until the result is received. Setting 3572 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3573 // activity hidden during this time, to avoid flickering. 3574 // This can only be done when a result is requested because 3575 // that guarantees we will get information back when the 3576 // activity is finished, no matter what happens to it. 3577 mStartedActivity = true; 3578 } 3579 3580 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 3581 if (decor != null) { 3582 decor.cancelPendingInputEvents(); 3583 } 3584 // TODO Consider clearing/flushing other event sources and events for child windows. 3585 } else { 3586 if (options != null) { 3587 mParent.startActivityFromChild(this, intent, requestCode, options); 3588 } else { 3589 // Note we want to go through this method for compatibility with 3590 // existing applications that may have overridden it. 3591 mParent.startActivityFromChild(this, intent, requestCode); 3592 } 3593 } 3594 } 3595 3596 /** 3597 * @hide Implement to provide correct calling token. 3598 */ 3599 public void startActivityAsUser(Intent intent, UserHandle user) { 3600 startActivityAsUser(intent, null, user); 3601 } 3602 3603 /** 3604 * @hide Implement to provide correct calling token. 3605 */ 3606 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 3607 if (mParent != null) { 3608 throw new RuntimeException("Called be called from a child"); 3609 } 3610 Instrumentation.ActivityResult ar = 3611 mInstrumentation.execStartActivity( 3612 this, mMainThread.getApplicationThread(), mToken, this, 3613 intent, -1, options, user); 3614 if (ar != null) { 3615 mMainThread.sendActivityResult( 3616 mToken, mEmbeddedID, -1, ar.getResultCode(), 3617 ar.getResultData()); 3618 } 3619 } 3620 3621 /** 3622 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 3623 * Intent, int, int, int, Bundle)} with no options. 3624 * 3625 * @param intent The IntentSender to launch. 3626 * @param requestCode If >= 0, this code will be returned in 3627 * onActivityResult() when the activity exits. 3628 * @param fillInIntent If non-null, this will be provided as the 3629 * intent parameter to {@link IntentSender#sendIntent}. 3630 * @param flagsMask Intent flags in the original IntentSender that you 3631 * would like to change. 3632 * @param flagsValues Desired values for any bits set in 3633 * <var>flagsMask</var> 3634 * @param extraFlags Always set to 0. 3635 */ 3636 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3637 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3638 throws IntentSender.SendIntentException { 3639 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 3640 flagsValues, extraFlags, null); 3641 } 3642 3643 /** 3644 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3645 * to use a IntentSender to describe the activity to be started. If 3646 * the IntentSender is for an activity, that activity will be started 3647 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3648 * here; otherwise, its associated action will be executed (such as 3649 * sending a broadcast) as if you had called 3650 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3651 * 3652 * @param intent The IntentSender to launch. 3653 * @param requestCode If >= 0, this code will be returned in 3654 * onActivityResult() when the activity exits. 3655 * @param fillInIntent If non-null, this will be provided as the 3656 * intent parameter to {@link IntentSender#sendIntent}. 3657 * @param flagsMask Intent flags in the original IntentSender that you 3658 * would like to change. 3659 * @param flagsValues Desired values for any bits set in 3660 * <var>flagsMask</var> 3661 * @param extraFlags Always set to 0. 3662 * @param options Additional options for how the Activity should be started. 3663 * See {@link android.content.Context#startActivity(Intent, Bundle) 3664 * Context.startActivity(Intent, Bundle)} for more details. If options 3665 * have also been supplied by the IntentSender, options given here will 3666 * override any that conflict with those given by the IntentSender. 3667 */ 3668 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3669 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3670 Bundle options) throws IntentSender.SendIntentException { 3671 if (mParent == null) { 3672 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3673 flagsMask, flagsValues, this, options); 3674 } else if (options != null) { 3675 mParent.startIntentSenderFromChild(this, intent, requestCode, 3676 fillInIntent, flagsMask, flagsValues, extraFlags, options); 3677 } else { 3678 // Note we want to go through this call for compatibility with 3679 // existing applications that may have overridden the method. 3680 mParent.startIntentSenderFromChild(this, intent, requestCode, 3681 fillInIntent, flagsMask, flagsValues, extraFlags); 3682 } 3683 } 3684 3685 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3686 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 3687 Bundle options) 3688 throws IntentSender.SendIntentException { 3689 try { 3690 String resolvedType = null; 3691 if (fillInIntent != null) { 3692 fillInIntent.migrateExtraStreamToClipData(); 3693 fillInIntent.prepareToLeaveProcess(); 3694 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3695 } 3696 int result = ActivityManagerNative.getDefault() 3697 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3698 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3699 requestCode, flagsMask, flagsValues, options); 3700 if (result == ActivityManager.START_CANCELED) { 3701 throw new IntentSender.SendIntentException(); 3702 } 3703 Instrumentation.checkStartActivityResult(result, null); 3704 } catch (RemoteException e) { 3705 } 3706 if (requestCode >= 0) { 3707 // If this start is requesting a result, we can avoid making 3708 // the activity visible until the result is received. Setting 3709 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3710 // activity hidden during this time, to avoid flickering. 3711 // This can only be done when a result is requested because 3712 // that guarantees we will get information back when the 3713 // activity is finished, no matter what happens to it. 3714 mStartedActivity = true; 3715 } 3716 } 3717 3718 /** 3719 * Same as {@link #startActivity(Intent, Bundle)} with no options 3720 * specified. 3721 * 3722 * @param intent The intent to start. 3723 * 3724 * @throws android.content.ActivityNotFoundException 3725 * 3726 * @see {@link #startActivity(Intent, Bundle)} 3727 * @see #startActivityForResult 3728 */ 3729 @Override 3730 public void startActivity(Intent intent) { 3731 this.startActivity(intent, null); 3732 } 3733 3734 /** 3735 * Launch a new activity. You will not receive any information about when 3736 * the activity exits. This implementation overrides the base version, 3737 * providing information about 3738 * the activity performing the launch. Because of this additional 3739 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3740 * required; if not specified, the new activity will be added to the 3741 * task of the caller. 3742 * 3743 * <p>This method throws {@link android.content.ActivityNotFoundException} 3744 * if there was no Activity found to run the given Intent. 3745 * 3746 * @param intent The intent to start. 3747 * @param options Additional options for how the Activity should be started. 3748 * See {@link android.content.Context#startActivity(Intent, Bundle) 3749 * Context.startActivity(Intent, Bundle)} for more details. 3750 * 3751 * @throws android.content.ActivityNotFoundException 3752 * 3753 * @see {@link #startActivity(Intent)} 3754 * @see #startActivityForResult 3755 */ 3756 @Override 3757 public void startActivity(Intent intent, @Nullable Bundle options) { 3758 if (options != null) { 3759 startActivityForResult(intent, -1, options); 3760 } else { 3761 // Note we want to go through this call for compatibility with 3762 // applications that may have overridden the method. 3763 startActivityForResult(intent, -1); 3764 } 3765 } 3766 3767 /** 3768 * Same as {@link #startActivities(Intent[], Bundle)} with no options 3769 * specified. 3770 * 3771 * @param intents The intents to start. 3772 * 3773 * @throws android.content.ActivityNotFoundException 3774 * 3775 * @see {@link #startActivities(Intent[], Bundle)} 3776 * @see #startActivityForResult 3777 */ 3778 @Override 3779 public void startActivities(Intent[] intents) { 3780 startActivities(intents, null); 3781 } 3782 3783 /** 3784 * Launch a new activity. You will not receive any information about when 3785 * the activity exits. This implementation overrides the base version, 3786 * providing information about 3787 * the activity performing the launch. Because of this additional 3788 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3789 * required; if not specified, the new activity will be added to the 3790 * task of the caller. 3791 * 3792 * <p>This method throws {@link android.content.ActivityNotFoundException} 3793 * if there was no Activity found to run the given Intent. 3794 * 3795 * @param intents The intents to start. 3796 * @param options Additional options for how the Activity should be started. 3797 * See {@link android.content.Context#startActivity(Intent, Bundle) 3798 * Context.startActivity(Intent, Bundle)} for more details. 3799 * 3800 * @throws android.content.ActivityNotFoundException 3801 * 3802 * @see {@link #startActivities(Intent[])} 3803 * @see #startActivityForResult 3804 */ 3805 @Override 3806 public void startActivities(Intent[] intents, @Nullable Bundle options) { 3807 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3808 mToken, this, intents, options); 3809 } 3810 3811 /** 3812 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 3813 * with no options. 3814 * 3815 * @param intent The IntentSender to launch. 3816 * @param fillInIntent If non-null, this will be provided as the 3817 * intent parameter to {@link IntentSender#sendIntent}. 3818 * @param flagsMask Intent flags in the original IntentSender that you 3819 * would like to change. 3820 * @param flagsValues Desired values for any bits set in 3821 * <var>flagsMask</var> 3822 * @param extraFlags Always set to 0. 3823 */ 3824 public void startIntentSender(IntentSender intent, 3825 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3826 throws IntentSender.SendIntentException { 3827 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 3828 extraFlags, null); 3829 } 3830 3831 /** 3832 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 3833 * to start; see 3834 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 3835 * for more information. 3836 * 3837 * @param intent The IntentSender to launch. 3838 * @param fillInIntent If non-null, this will be provided as the 3839 * intent parameter to {@link IntentSender#sendIntent}. 3840 * @param flagsMask Intent flags in the original IntentSender that you 3841 * would like to change. 3842 * @param flagsValues Desired values for any bits set in 3843 * <var>flagsMask</var> 3844 * @param extraFlags Always set to 0. 3845 * @param options Additional options for how the Activity should be started. 3846 * See {@link android.content.Context#startActivity(Intent, Bundle) 3847 * Context.startActivity(Intent, Bundle)} for more details. If options 3848 * have also been supplied by the IntentSender, options given here will 3849 * override any that conflict with those given by the IntentSender. 3850 */ 3851 public void startIntentSender(IntentSender intent, 3852 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3853 Bundle options) throws IntentSender.SendIntentException { 3854 if (options != null) { 3855 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3856 flagsValues, extraFlags, options); 3857 } else { 3858 // Note we want to go through this call for compatibility with 3859 // applications that may have overridden the method. 3860 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3861 flagsValues, extraFlags); 3862 } 3863 } 3864 3865 /** 3866 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 3867 * with no options. 3868 * 3869 * @param intent The intent to start. 3870 * @param requestCode If >= 0, this code will be returned in 3871 * onActivityResult() when the activity exits, as described in 3872 * {@link #startActivityForResult}. 3873 * 3874 * @return If a new activity was launched then true is returned; otherwise 3875 * false is returned and you must handle the Intent yourself. 3876 * 3877 * @see #startActivity 3878 * @see #startActivityForResult 3879 */ 3880 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode) { 3881 return startActivityIfNeeded(intent, requestCode, null); 3882 } 3883 3884 /** 3885 * A special variation to launch an activity only if a new activity 3886 * instance is needed to handle the given Intent. In other words, this is 3887 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3888 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3889 * singleTask or singleTop 3890 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3891 * and the activity 3892 * that handles <var>intent</var> is the same as your currently running 3893 * activity, then a new instance is not needed. In this case, instead of 3894 * the normal behavior of calling {@link #onNewIntent} this function will 3895 * return and you can handle the Intent yourself. 3896 * 3897 * <p>This function can only be called from a top-level activity; if it is 3898 * called from a child activity, a runtime exception will be thrown. 3899 * 3900 * @param intent The intent to start. 3901 * @param requestCode If >= 0, this code will be returned in 3902 * onActivityResult() when the activity exits, as described in 3903 * {@link #startActivityForResult}. 3904 * @param options Additional options for how the Activity should be started. 3905 * See {@link android.content.Context#startActivity(Intent, Bundle) 3906 * Context.startActivity(Intent, Bundle)} for more details. 3907 * 3908 * @return If a new activity was launched then true is returned; otherwise 3909 * false is returned and you must handle the Intent yourself. 3910 * 3911 * @see #startActivity 3912 * @see #startActivityForResult 3913 */ 3914 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode, 3915 @Nullable Bundle options) { 3916 if (mParent == null) { 3917 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 3918 try { 3919 intent.migrateExtraStreamToClipData(); 3920 intent.prepareToLeaveProcess(); 3921 result = ActivityManagerNative.getDefault() 3922 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 3923 intent, intent.resolveTypeIfNeeded(getContentResolver()), 3924 mToken, mEmbeddedID, requestCode, 3925 ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, null, 3926 options); 3927 } catch (RemoteException e) { 3928 // Empty 3929 } 3930 3931 Instrumentation.checkStartActivityResult(result, intent); 3932 3933 if (requestCode >= 0) { 3934 // If this start is requesting a result, we can avoid making 3935 // the activity visible until the result is received. Setting 3936 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3937 // activity hidden during this time, to avoid flickering. 3938 // This can only be done when a result is requested because 3939 // that guarantees we will get information back when the 3940 // activity is finished, no matter what happens to it. 3941 mStartedActivity = true; 3942 } 3943 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 3944 } 3945 3946 throw new UnsupportedOperationException( 3947 "startActivityIfNeeded can only be called from a top-level activity"); 3948 } 3949 3950 /** 3951 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 3952 * no options. 3953 * 3954 * @param intent The intent to dispatch to the next activity. For 3955 * correct behavior, this must be the same as the Intent that started 3956 * your own activity; the only changes you can make are to the extras 3957 * inside of it. 3958 * 3959 * @return Returns a boolean indicating whether there was another Activity 3960 * to start: true if there was a next activity to start, false if there 3961 * wasn't. In general, if true is returned you will then want to call 3962 * finish() on yourself. 3963 */ 3964 public boolean startNextMatchingActivity(@NonNull Intent intent) { 3965 return startNextMatchingActivity(intent, null); 3966 } 3967 3968 /** 3969 * Special version of starting an activity, for use when you are replacing 3970 * other activity components. You can use this to hand the Intent off 3971 * to the next Activity that can handle it. You typically call this in 3972 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3973 * 3974 * @param intent The intent to dispatch to the next activity. For 3975 * correct behavior, this must be the same as the Intent that started 3976 * your own activity; the only changes you can make are to the extras 3977 * inside of it. 3978 * @param options Additional options for how the Activity should be started. 3979 * See {@link android.content.Context#startActivity(Intent, Bundle) 3980 * Context.startActivity(Intent, Bundle)} for more details. 3981 * 3982 * @return Returns a boolean indicating whether there was another Activity 3983 * to start: true if there was a next activity to start, false if there 3984 * wasn't. In general, if true is returned you will then want to call 3985 * finish() on yourself. 3986 */ 3987 public boolean startNextMatchingActivity(@NonNull Intent intent, @Nullable Bundle options) { 3988 if (mParent == null) { 3989 try { 3990 intent.migrateExtraStreamToClipData(); 3991 intent.prepareToLeaveProcess(); 3992 return ActivityManagerNative.getDefault() 3993 .startNextMatchingActivity(mToken, intent, options); 3994 } catch (RemoteException e) { 3995 // Empty 3996 } 3997 return false; 3998 } 3999 4000 throw new UnsupportedOperationException( 4001 "startNextMatchingActivity can only be called from a top-level activity"); 4002 } 4003 4004 /** 4005 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4006 * with no options. 4007 * 4008 * @param child The activity making the call. 4009 * @param intent The intent to start. 4010 * @param requestCode Reply request code. < 0 if reply is not requested. 4011 * 4012 * @throws android.content.ActivityNotFoundException 4013 * 4014 * @see #startActivity 4015 * @see #startActivityForResult 4016 */ 4017 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4018 int requestCode) { 4019 startActivityFromChild(child, intent, requestCode, null); 4020 } 4021 4022 /** 4023 * This is called when a child activity of this one calls its 4024 * {@link #startActivity} or {@link #startActivityForResult} method. 4025 * 4026 * <p>This method throws {@link android.content.ActivityNotFoundException} 4027 * if there was no Activity found to run the given Intent. 4028 * 4029 * @param child The activity making the call. 4030 * @param intent The intent to start. 4031 * @param requestCode Reply request code. < 0 if reply is not requested. 4032 * @param options Additional options for how the Activity should be started. 4033 * See {@link android.content.Context#startActivity(Intent, Bundle) 4034 * Context.startActivity(Intent, Bundle)} for more details. 4035 * 4036 * @throws android.content.ActivityNotFoundException 4037 * 4038 * @see #startActivity 4039 * @see #startActivityForResult 4040 */ 4041 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4042 int requestCode, @Nullable Bundle options) { 4043 Instrumentation.ActivityResult ar = 4044 mInstrumentation.execStartActivity( 4045 this, mMainThread.getApplicationThread(), mToken, child, 4046 intent, requestCode, options); 4047 if (ar != null) { 4048 mMainThread.sendActivityResult( 4049 mToken, child.mEmbeddedID, requestCode, 4050 ar.getResultCode(), ar.getResultData()); 4051 } 4052 } 4053 4054 /** 4055 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4056 * with no options. 4057 * 4058 * @param fragment The fragment making the call. 4059 * @param intent The intent to start. 4060 * @param requestCode Reply request code. < 0 if reply is not requested. 4061 * 4062 * @throws android.content.ActivityNotFoundException 4063 * 4064 * @see Fragment#startActivity 4065 * @see Fragment#startActivityForResult 4066 */ 4067 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4068 int requestCode) { 4069 startActivityFromFragment(fragment, intent, requestCode, null); 4070 } 4071 4072 /** 4073 * This is called when a Fragment in this activity calls its 4074 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4075 * method. 4076 * 4077 * <p>This method throws {@link android.content.ActivityNotFoundException} 4078 * if there was no Activity found to run the given Intent. 4079 * 4080 * @param fragment The fragment making the call. 4081 * @param intent The intent to start. 4082 * @param requestCode Reply request code. < 0 if reply is not requested. 4083 * @param options Additional options for how the Activity should be started. 4084 * See {@link android.content.Context#startActivity(Intent, Bundle) 4085 * Context.startActivity(Intent, Bundle)} for more details. 4086 * 4087 * @throws android.content.ActivityNotFoundException 4088 * 4089 * @see Fragment#startActivity 4090 * @see Fragment#startActivityForResult 4091 */ 4092 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4093 int requestCode, @Nullable Bundle options) { 4094 Instrumentation.ActivityResult ar = 4095 mInstrumentation.execStartActivity( 4096 this, mMainThread.getApplicationThread(), mToken, fragment, 4097 intent, requestCode, options); 4098 if (ar != null) { 4099 mMainThread.sendActivityResult( 4100 mToken, fragment.mWho, requestCode, 4101 ar.getResultCode(), ar.getResultData()); 4102 } 4103 } 4104 4105 /** 4106 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4107 * int, Intent, int, int, int, Bundle)} with no options. 4108 */ 4109 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4110 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4111 int extraFlags) 4112 throws IntentSender.SendIntentException { 4113 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4114 flagsMask, flagsValues, extraFlags, null); 4115 } 4116 4117 /** 4118 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4119 * taking a IntentSender; see 4120 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4121 * for more information. 4122 */ 4123 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4124 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4125 int extraFlags, @Nullable Bundle options) 4126 throws IntentSender.SendIntentException { 4127 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4128 flagsMask, flagsValues, child, options); 4129 } 4130 4131 /** 4132 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4133 * or {@link #finish} to specify an explicit transition animation to 4134 * perform next. 4135 * 4136 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4137 * to using this with starting activities is to supply the desired animation 4138 * information through a {@link ActivityOptions} bundle to 4139 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4140 * you to specify a custom animation even when starting an activity from 4141 * outside the context of the current top activity. 4142 * 4143 * @param enterAnim A resource ID of the animation resource to use for 4144 * the incoming activity. Use 0 for no animation. 4145 * @param exitAnim A resource ID of the animation resource to use for 4146 * the outgoing activity. Use 0 for no animation. 4147 */ 4148 public void overridePendingTransition(int enterAnim, int exitAnim) { 4149 try { 4150 ActivityManagerNative.getDefault().overridePendingTransition( 4151 mToken, getPackageName(), enterAnim, exitAnim); 4152 } catch (RemoteException e) { 4153 } 4154 } 4155 4156 /** 4157 * Call this to set the result that your activity will return to its 4158 * caller. 4159 * 4160 * @param resultCode The result code to propagate back to the originating 4161 * activity, often RESULT_CANCELED or RESULT_OK 4162 * 4163 * @see #RESULT_CANCELED 4164 * @see #RESULT_OK 4165 * @see #RESULT_FIRST_USER 4166 * @see #setResult(int, Intent) 4167 */ 4168 public final void setResult(int resultCode) { 4169 synchronized (this) { 4170 mResultCode = resultCode; 4171 mResultData = null; 4172 } 4173 } 4174 4175 /** 4176 * Call this to set the result that your activity will return to its 4177 * caller. 4178 * 4179 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4180 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4181 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4182 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4183 * Activity receiving the result access to the specific URIs in the Intent. 4184 * Access will remain until the Activity has finished (it will remain across the hosting 4185 * process being killed and other temporary destruction) and will be added 4186 * to any existing set of URI permissions it already holds. 4187 * 4188 * @param resultCode The result code to propagate back to the originating 4189 * activity, often RESULT_CANCELED or RESULT_OK 4190 * @param data The data to propagate back to the originating activity. 4191 * 4192 * @see #RESULT_CANCELED 4193 * @see #RESULT_OK 4194 * @see #RESULT_FIRST_USER 4195 * @see #setResult(int) 4196 */ 4197 public final void setResult(int resultCode, Intent data) { 4198 synchronized (this) { 4199 mResultCode = resultCode; 4200 mResultData = data; 4201 } 4202 } 4203 4204 /** 4205 * Return the name of the package that invoked this activity. This is who 4206 * the data in {@link #setResult setResult()} will be sent to. You can 4207 * use this information to validate that the recipient is allowed to 4208 * receive the data. 4209 * 4210 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4211 * did not use the {@link #startActivityForResult} 4212 * form that includes a request code), then the calling package will be 4213 * null.</p> 4214 * 4215 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4216 * the result from this method was unstable. If the process hosting the calling 4217 * package was no longer running, it would return null instead of the proper package 4218 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4219 * from that instead.</p> 4220 * 4221 * @return The package of the activity that will receive your 4222 * reply, or null if none. 4223 */ 4224 @Nullable 4225 public String getCallingPackage() { 4226 try { 4227 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4228 } catch (RemoteException e) { 4229 return null; 4230 } 4231 } 4232 4233 /** 4234 * Return the name of the activity that invoked this activity. This is 4235 * who the data in {@link #setResult setResult()} will be sent to. You 4236 * can use this information to validate that the recipient is allowed to 4237 * receive the data. 4238 * 4239 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4240 * did not use the {@link #startActivityForResult} 4241 * form that includes a request code), then the calling package will be 4242 * null. 4243 * 4244 * @return The ComponentName of the activity that will receive your 4245 * reply, or null if none. 4246 */ 4247 @Nullable 4248 public ComponentName getCallingActivity() { 4249 try { 4250 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4251 } catch (RemoteException e) { 4252 return null; 4253 } 4254 } 4255 4256 /** 4257 * Control whether this activity's main window is visible. This is intended 4258 * only for the special case of an activity that is not going to show a 4259 * UI itself, but can't just finish prior to onResume() because it needs 4260 * to wait for a service binding or such. Setting this to false allows 4261 * you to prevent your UI from being shown during that time. 4262 * 4263 * <p>The default value for this is taken from the 4264 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4265 */ 4266 public void setVisible(boolean visible) { 4267 if (mVisibleFromClient != visible) { 4268 mVisibleFromClient = visible; 4269 if (mVisibleFromServer) { 4270 if (visible) makeVisible(); 4271 else mDecor.setVisibility(View.INVISIBLE); 4272 } 4273 } 4274 } 4275 4276 void makeVisible() { 4277 if (!mWindowAdded) { 4278 ViewManager wm = getWindowManager(); 4279 wm.addView(mDecor, getWindow().getAttributes()); 4280 mWindowAdded = true; 4281 } 4282 mDecor.setVisibility(View.VISIBLE); 4283 } 4284 4285 /** 4286 * Check to see whether this activity is in the process of finishing, 4287 * either because you called {@link #finish} on it or someone else 4288 * has requested that it finished. This is often used in 4289 * {@link #onPause} to determine whether the activity is simply pausing or 4290 * completely finishing. 4291 * 4292 * @return If the activity is finishing, returns true; else returns false. 4293 * 4294 * @see #finish 4295 */ 4296 public boolean isFinishing() { 4297 return mFinished; 4298 } 4299 4300 /** 4301 * Returns true if the final {@link #onDestroy()} call has been made 4302 * on the Activity, so this instance is now dead. 4303 */ 4304 public boolean isDestroyed() { 4305 return mDestroyed; 4306 } 4307 4308 /** 4309 * Check to see whether this activity is in the process of being destroyed in order to be 4310 * recreated with a new configuration. This is often used in 4311 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4312 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4313 * 4314 * @return If the activity is being torn down in order to be recreated with a new configuration, 4315 * returns true; else returns false. 4316 */ 4317 public boolean isChangingConfigurations() { 4318 return mChangingConfigurations; 4319 } 4320 4321 /** 4322 * Cause this Activity to be recreated with a new instance. This results 4323 * in essentially the same flow as when the Activity is created due to 4324 * a configuration change -- the current instance will go through its 4325 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4326 */ 4327 public void recreate() { 4328 if (mParent != null) { 4329 throw new IllegalStateException("Can only be called on top-level activity"); 4330 } 4331 if (Looper.myLooper() != mMainThread.getLooper()) { 4332 throw new IllegalStateException("Must be called from main thread"); 4333 } 4334 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 4335 } 4336 4337 /** 4338 * Finishes the current activity and specifies whether to remove the task associated with this 4339 * activity. 4340 */ 4341 private void finish(boolean finishTask) { 4342 if (mParent == null) { 4343 int resultCode; 4344 Intent resultData; 4345 synchronized (this) { 4346 resultCode = mResultCode; 4347 resultData = mResultData; 4348 } 4349 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4350 try { 4351 if (resultData != null) { 4352 resultData.prepareToLeaveProcess(); 4353 } 4354 if (ActivityManagerNative.getDefault() 4355 .finishActivity(mToken, resultCode, resultData, finishTask)) { 4356 mFinished = true; 4357 } 4358 } catch (RemoteException e) { 4359 // Empty 4360 } 4361 } else { 4362 mParent.finishFromChild(this); 4363 } 4364 } 4365 4366 /** 4367 * Call this when your activity is done and should be closed. The 4368 * ActivityResult is propagated back to whoever launched you via 4369 * onActivityResult(). 4370 */ 4371 public void finish() { 4372 finish(false); 4373 } 4374 4375 /** 4376 * Finish this activity as well as all activities immediately below it 4377 * in the current task that have the same affinity. This is typically 4378 * used when an application can be launched on to another task (such as 4379 * from an ACTION_VIEW of a content type it understands) and the user 4380 * has used the up navigation to switch out of the current task and in 4381 * to its own task. In this case, if the user has navigated down into 4382 * any other activities of the second application, all of those should 4383 * be removed from the original task as part of the task switch. 4384 * 4385 * <p>Note that this finish does <em>not</em> allow you to deliver results 4386 * to the previous activity, and an exception will be thrown if you are trying 4387 * to do so.</p> 4388 */ 4389 public void finishAffinity() { 4390 if (mParent != null) { 4391 throw new IllegalStateException("Can not be called from an embedded activity"); 4392 } 4393 if (mResultCode != RESULT_CANCELED || mResultData != null) { 4394 throw new IllegalStateException("Can not be called to deliver a result"); 4395 } 4396 try { 4397 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 4398 mFinished = true; 4399 } 4400 } catch (RemoteException e) { 4401 // Empty 4402 } 4403 } 4404 4405 /** 4406 * This is called when a child activity of this one calls its 4407 * {@link #finish} method. The default implementation simply calls 4408 * finish() on this activity (the parent), finishing the entire group. 4409 * 4410 * @param child The activity making the call. 4411 * 4412 * @see #finish 4413 */ 4414 public void finishFromChild(Activity child) { 4415 finish(); 4416 } 4417 4418 /** 4419 * Reverses the Activity Scene entry Transition and triggers the calling Activity 4420 * to reverse its exit Transition. When the exit Transition completes, 4421 * {@link #finish()} is called. If no entry Transition was used, finish() is called 4422 * immediately and the Activity exit Transition is run. 4423 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(android.view.Window, 4424 * android.app.ActivityOptions.ActivityTransitionListener) 4425 */ 4426 public void finishWithTransition() { 4427 if (mEnterTransitionCoordinator != null) { 4428 mEnterTransitionCoordinator.startExit(); 4429 } else { 4430 finish(); 4431 } 4432 } 4433 4434 /** 4435 * Force finish another activity that you had previously started with 4436 * {@link #startActivityForResult}. 4437 * 4438 * @param requestCode The request code of the activity that you had 4439 * given to startActivityForResult(). If there are multiple 4440 * activities started with this request code, they 4441 * will all be finished. 4442 */ 4443 public void finishActivity(int requestCode) { 4444 if (mParent == null) { 4445 try { 4446 ActivityManagerNative.getDefault() 4447 .finishSubActivity(mToken, mEmbeddedID, requestCode); 4448 } catch (RemoteException e) { 4449 // Empty 4450 } 4451 } else { 4452 mParent.finishActivityFromChild(this, requestCode); 4453 } 4454 } 4455 4456 /** 4457 * This is called when a child activity of this one calls its 4458 * finishActivity(). 4459 * 4460 * @param child The activity making the call. 4461 * @param requestCode Request code that had been used to start the 4462 * activity. 4463 */ 4464 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 4465 try { 4466 ActivityManagerNative.getDefault() 4467 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 4468 } catch (RemoteException e) { 4469 // Empty 4470 } 4471 } 4472 4473 /** 4474 * Call this when your activity is done and should be closed and the task should be completely 4475 * removed as a part of finishing the Activity. 4476 */ 4477 public void finishAndRemoveTask() { 4478 finish(true); 4479 } 4480 4481 /** 4482 * Called when an activity you launched exits, giving you the requestCode 4483 * you started it with, the resultCode it returned, and any additional 4484 * data from it. The <var>resultCode</var> will be 4485 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 4486 * didn't return any result, or crashed during its operation. 4487 * 4488 * <p>You will receive this call immediately before onResume() when your 4489 * activity is re-starting. 4490 * 4491 * @param requestCode The integer request code originally supplied to 4492 * startActivityForResult(), allowing you to identify who this 4493 * result came from. 4494 * @param resultCode The integer result code returned by the child activity 4495 * through its setResult(). 4496 * @param data An Intent, which can return result data to the caller 4497 * (various data can be attached to Intent "extras"). 4498 * 4499 * @see #startActivityForResult 4500 * @see #createPendingResult 4501 * @see #setResult(int) 4502 */ 4503 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 4504 } 4505 4506 /** 4507 * Create a new PendingIntent object which you can hand to others 4508 * for them to use to send result data back to your 4509 * {@link #onActivityResult} callback. The created object will be either 4510 * one-shot (becoming invalid after a result is sent back) or multiple 4511 * (allowing any number of results to be sent through it). 4512 * 4513 * @param requestCode Private request code for the sender that will be 4514 * associated with the result data when it is returned. The sender can not 4515 * modify this value, allowing you to identify incoming results. 4516 * @param data Default data to supply in the result, which may be modified 4517 * by the sender. 4518 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 4519 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 4520 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 4521 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 4522 * or any of the flags as supported by 4523 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 4524 * of the intent that can be supplied when the actual send happens. 4525 * 4526 * @return Returns an existing or new PendingIntent matching the given 4527 * parameters. May return null only if 4528 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 4529 * supplied. 4530 * 4531 * @see PendingIntent 4532 */ 4533 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 4534 @PendingIntent.Flags int flags) { 4535 String packageName = getPackageName(); 4536 try { 4537 data.prepareToLeaveProcess(); 4538 IIntentSender target = 4539 ActivityManagerNative.getDefault().getIntentSender( 4540 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 4541 mParent == null ? mToken : mParent.mToken, 4542 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 4543 UserHandle.myUserId()); 4544 return target != null ? new PendingIntent(target) : null; 4545 } catch (RemoteException e) { 4546 // Empty 4547 } 4548 return null; 4549 } 4550 4551 /** 4552 * Change the desired orientation of this activity. If the activity 4553 * is currently in the foreground or otherwise impacting the screen 4554 * orientation, the screen will immediately be changed (possibly causing 4555 * the activity to be restarted). Otherwise, this will be used the next 4556 * time the activity is visible. 4557 * 4558 * @param requestedOrientation An orientation constant as used in 4559 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4560 */ 4561 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 4562 if (mParent == null) { 4563 try { 4564 ActivityManagerNative.getDefault().setRequestedOrientation( 4565 mToken, requestedOrientation); 4566 } catch (RemoteException e) { 4567 // Empty 4568 } 4569 } else { 4570 mParent.setRequestedOrientation(requestedOrientation); 4571 } 4572 } 4573 4574 /** 4575 * Return the current requested orientation of the activity. This will 4576 * either be the orientation requested in its component's manifest, or 4577 * the last requested orientation given to 4578 * {@link #setRequestedOrientation(int)}. 4579 * 4580 * @return Returns an orientation constant as used in 4581 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4582 */ 4583 @ActivityInfo.ScreenOrientation 4584 public int getRequestedOrientation() { 4585 if (mParent == null) { 4586 try { 4587 return ActivityManagerNative.getDefault() 4588 .getRequestedOrientation(mToken); 4589 } catch (RemoteException e) { 4590 // Empty 4591 } 4592 } else { 4593 return mParent.getRequestedOrientation(); 4594 } 4595 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4596 } 4597 4598 /** 4599 * Return the identifier of the task this activity is in. This identifier 4600 * will remain the same for the lifetime of the activity. 4601 * 4602 * @return Task identifier, an opaque integer. 4603 */ 4604 public int getTaskId() { 4605 try { 4606 return ActivityManagerNative.getDefault() 4607 .getTaskForActivity(mToken, false); 4608 } catch (RemoteException e) { 4609 return -1; 4610 } 4611 } 4612 4613 /** 4614 * Return whether this activity is the root of a task. The root is the 4615 * first activity in a task. 4616 * 4617 * @return True if this is the root activity, else false. 4618 */ 4619 public boolean isTaskRoot() { 4620 try { 4621 return ActivityManagerNative.getDefault() 4622 .getTaskForActivity(mToken, true) >= 0; 4623 } catch (RemoteException e) { 4624 return false; 4625 } 4626 } 4627 4628 /** 4629 * Move the task containing this activity to the back of the activity 4630 * stack. The activity's order within the task is unchanged. 4631 * 4632 * @param nonRoot If false then this only works if the activity is the root 4633 * of a task; if true it will work for any activity in 4634 * a task. 4635 * 4636 * @return If the task was moved (or it was already at the 4637 * back) true is returned, else false. 4638 */ 4639 public boolean moveTaskToBack(boolean nonRoot) { 4640 try { 4641 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 4642 mToken, nonRoot); 4643 } catch (RemoteException e) { 4644 // Empty 4645 } 4646 return false; 4647 } 4648 4649 /** 4650 * Returns class name for this activity with the package prefix removed. 4651 * This is the default name used to read and write settings. 4652 * 4653 * @return The local class name. 4654 */ 4655 @NonNull 4656 public String getLocalClassName() { 4657 final String pkg = getPackageName(); 4658 final String cls = mComponent.getClassName(); 4659 int packageLen = pkg.length(); 4660 if (!cls.startsWith(pkg) || cls.length() <= packageLen 4661 || cls.charAt(packageLen) != '.') { 4662 return cls; 4663 } 4664 return cls.substring(packageLen+1); 4665 } 4666 4667 /** 4668 * Returns complete component name of this activity. 4669 * 4670 * @return Returns the complete component name for this activity 4671 */ 4672 public ComponentName getComponentName() 4673 { 4674 return mComponent; 4675 } 4676 4677 /** 4678 * Retrieve a {@link SharedPreferences} object for accessing preferences 4679 * that are private to this activity. This simply calls the underlying 4680 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 4681 * class name as the preferences name. 4682 * 4683 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 4684 * operation, {@link #MODE_WORLD_READABLE} and 4685 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 4686 * 4687 * @return Returns the single SharedPreferences instance that can be used 4688 * to retrieve and modify the preference values. 4689 */ 4690 public SharedPreferences getPreferences(int mode) { 4691 return getSharedPreferences(getLocalClassName(), mode); 4692 } 4693 4694 private void ensureSearchManager() { 4695 if (mSearchManager != null) { 4696 return; 4697 } 4698 4699 mSearchManager = new SearchManager(this, null); 4700 } 4701 4702 @Override 4703 public Object getSystemService(@ServiceName @NonNull String name) { 4704 if (getBaseContext() == null) { 4705 throw new IllegalStateException( 4706 "System services not available to Activities before onCreate()"); 4707 } 4708 4709 if (WINDOW_SERVICE.equals(name)) { 4710 return mWindowManager; 4711 } else if (SEARCH_SERVICE.equals(name)) { 4712 ensureSearchManager(); 4713 return mSearchManager; 4714 } 4715 return super.getSystemService(name); 4716 } 4717 4718 /** 4719 * Change the title associated with this activity. If this is a 4720 * top-level activity, the title for its window will change. If it 4721 * is an embedded activity, the parent can do whatever it wants 4722 * with it. 4723 */ 4724 public void setTitle(CharSequence title) { 4725 mTitle = title; 4726 onTitleChanged(title, mTitleColor); 4727 4728 if (mParent != null) { 4729 mParent.onChildTitleChanged(this, title); 4730 } 4731 } 4732 4733 /** 4734 * Change the title associated with this activity. If this is a 4735 * top-level activity, the title for its window will change. If it 4736 * is an embedded activity, the parent can do whatever it wants 4737 * with it. 4738 */ 4739 public void setTitle(int titleId) { 4740 setTitle(getText(titleId)); 4741 } 4742 4743 /** 4744 * Change the color of the title associated with this activity. 4745 * <p> 4746 * This method is deprecated starting in API Level 11 and replaced by action 4747 * bar styles. For information on styling the Action Bar, read the <a 4748 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 4749 * guide. 4750 * 4751 * @deprecated Use action bar styles instead. 4752 */ 4753 @Deprecated 4754 public void setTitleColor(int textColor) { 4755 mTitleColor = textColor; 4756 onTitleChanged(mTitle, textColor); 4757 } 4758 4759 public final CharSequence getTitle() { 4760 return mTitle; 4761 } 4762 4763 public final int getTitleColor() { 4764 return mTitleColor; 4765 } 4766 4767 protected void onTitleChanged(CharSequence title, int color) { 4768 if (mTitleReady) { 4769 final Window win = getWindow(); 4770 if (win != null) { 4771 win.setTitle(title); 4772 if (color != 0) { 4773 win.setTitleColor(color); 4774 } 4775 } 4776 } 4777 } 4778 4779 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4780 } 4781 4782 /** 4783 * Set a label and icon to be used in the Recents task display. When {@link 4784 * ActivityManager#getRecentTasks} is called, the activities of each task are 4785 * traversed in order from the topmost activity to the bottommost. As soon as one activity is 4786 * found with either a non-null label or a non-null icon set by this call the traversal is 4787 * ended. For each task those values will be returned in {@link 4788 * ActivityManager.RecentTaskInfo#activityLabel} and {@link 4789 * ActivityManager.RecentTaskInfo#activityIcon}. 4790 * 4791 * @see ActivityManager#getRecentTasks 4792 * @see ActivityManager.RecentTaskInfo 4793 * 4794 * @param activityLabel The label to use in the RecentTaskInfo. 4795 * @param activityIcon The Bitmap to use in the RecentTaskInfo. 4796 */ 4797 public void setActivityLabelAndIcon(CharSequence activityLabel, Bitmap activityIcon) { 4798 final Bitmap scaledIcon; 4799 if (activityIcon != null) { 4800 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 4801 scaledIcon = Bitmap.createScaledBitmap(activityIcon, size, size, true); 4802 } else { 4803 scaledIcon = null; 4804 } 4805 try { 4806 ActivityManagerNative.getDefault().setActivityLabelAndIcon(mToken, activityLabel, 4807 scaledIcon); 4808 } catch (RemoteException e) { 4809 } 4810 } 4811 4812 /** 4813 * Sets the visibility of the progress bar in the title. 4814 * <p> 4815 * In order for the progress bar to be shown, the feature must be requested 4816 * via {@link #requestWindowFeature(int)}. 4817 * 4818 * @param visible Whether to show the progress bars in the title. 4819 */ 4820 public final void setProgressBarVisibility(boolean visible) { 4821 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4822 Window.PROGRESS_VISIBILITY_OFF); 4823 } 4824 4825 /** 4826 * Sets the visibility of the indeterminate progress bar in the title. 4827 * <p> 4828 * In order for the progress bar to be shown, the feature must be requested 4829 * via {@link #requestWindowFeature(int)}. 4830 * 4831 * @param visible Whether to show the progress bars in the title. 4832 */ 4833 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4834 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4835 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4836 } 4837 4838 /** 4839 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4840 * is always indeterminate). 4841 * <p> 4842 * In order for the progress bar to be shown, the feature must be requested 4843 * via {@link #requestWindowFeature(int)}. 4844 * 4845 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4846 */ 4847 public final void setProgressBarIndeterminate(boolean indeterminate) { 4848 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4849 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 4850 : Window.PROGRESS_INDETERMINATE_OFF); 4851 } 4852 4853 /** 4854 * Sets the progress for the progress bars in the title. 4855 * <p> 4856 * In order for the progress bar to be shown, the feature must be requested 4857 * via {@link #requestWindowFeature(int)}. 4858 * 4859 * @param progress The progress for the progress bar. Valid ranges are from 4860 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4861 * bar will be completely filled and will fade out. 4862 */ 4863 public final void setProgress(int progress) { 4864 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4865 } 4866 4867 /** 4868 * Sets the secondary progress for the progress bar in the title. This 4869 * progress is drawn between the primary progress (set via 4870 * {@link #setProgress(int)} and the background. It can be ideal for media 4871 * scenarios such as showing the buffering progress while the default 4872 * progress shows the play progress. 4873 * <p> 4874 * In order for the progress bar to be shown, the feature must be requested 4875 * via {@link #requestWindowFeature(int)}. 4876 * 4877 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4878 * 0 to 10000 (both inclusive). 4879 */ 4880 public final void setSecondaryProgress(int secondaryProgress) { 4881 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4882 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4883 } 4884 4885 /** 4886 * Suggests an audio stream whose volume should be changed by the hardware 4887 * volume controls. 4888 * <p> 4889 * The suggested audio stream will be tied to the window of this Activity. 4890 * If the Activity is switched, the stream set here is no longer the 4891 * suggested stream. The client does not need to save and restore the old 4892 * suggested stream value in onPause and onResume. 4893 * 4894 * @param streamType The type of the audio stream whose volume should be 4895 * changed by the hardware volume controls. It is not guaranteed that 4896 * the hardware volume controls will always change this stream's 4897 * volume (for example, if a call is in progress, its stream's volume 4898 * may be changed instead). To reset back to the default, use 4899 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4900 */ 4901 public final void setVolumeControlStream(int streamType) { 4902 getWindow().setVolumeControlStream(streamType); 4903 } 4904 4905 /** 4906 * Gets the suggested audio stream whose volume should be changed by the 4907 * hardware volume controls. 4908 * 4909 * @return The suggested audio stream type whose volume should be changed by 4910 * the hardware volume controls. 4911 * @see #setVolumeControlStream(int) 4912 */ 4913 public final int getVolumeControlStream() { 4914 return getWindow().getVolumeControlStream(); 4915 } 4916 4917 /** 4918 * Runs the specified action on the UI thread. If the current thread is the UI 4919 * thread, then the action is executed immediately. If the current thread is 4920 * not the UI thread, the action is posted to the event queue of the UI thread. 4921 * 4922 * @param action the action to run on the UI thread 4923 */ 4924 public final void runOnUiThread(Runnable action) { 4925 if (Thread.currentThread() != mUiThread) { 4926 mHandler.post(action); 4927 } else { 4928 action.run(); 4929 } 4930 } 4931 4932 /** 4933 * Standard implementation of 4934 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4935 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4936 * This implementation does nothing and is for 4937 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4938 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4939 * 4940 * @see android.view.LayoutInflater#createView 4941 * @see android.view.Window#getLayoutInflater 4942 */ 4943 @Nullable 4944 public View onCreateView(String name, Context context, AttributeSet attrs) { 4945 return null; 4946 } 4947 4948 /** 4949 * Standard implementation of 4950 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4951 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4952 * This implementation handles <fragment> tags to embed fragments inside 4953 * of the activity. 4954 * 4955 * @see android.view.LayoutInflater#createView 4956 * @see android.view.Window#getLayoutInflater 4957 */ 4958 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4959 if (!"fragment".equals(name)) { 4960 return onCreateView(name, context, attrs); 4961 } 4962 4963 String fname = attrs.getAttributeValue(null, "class"); 4964 TypedArray a = 4965 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4966 if (fname == null) { 4967 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4968 } 4969 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4970 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4971 a.recycle(); 4972 4973 int containerId = parent != null ? parent.getId() : 0; 4974 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4975 throw new IllegalArgumentException(attrs.getPositionDescription() 4976 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4977 } 4978 4979 // If we restored from a previous state, we may already have 4980 // instantiated this fragment from the state and should use 4981 // that instance instead of making a new one. 4982 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4983 if (fragment == null && tag != null) { 4984 fragment = mFragments.findFragmentByTag(tag); 4985 } 4986 if (fragment == null && containerId != View.NO_ID) { 4987 fragment = mFragments.findFragmentById(containerId); 4988 } 4989 4990 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4991 + Integer.toHexString(id) + " fname=" + fname 4992 + " existing=" + fragment); 4993 if (fragment == null) { 4994 fragment = Fragment.instantiate(this, fname); 4995 fragment.mFromLayout = true; 4996 fragment.mFragmentId = id != 0 ? id : containerId; 4997 fragment.mContainerId = containerId; 4998 fragment.mTag = tag; 4999 fragment.mInLayout = true; 5000 fragment.mFragmentManager = mFragments; 5001 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 5002 mFragments.addFragment(fragment, true); 5003 5004 } else if (fragment.mInLayout) { 5005 // A fragment already exists and it is not one we restored from 5006 // previous state. 5007 throw new IllegalArgumentException(attrs.getPositionDescription() 5008 + ": Duplicate id 0x" + Integer.toHexString(id) 5009 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 5010 + " with another fragment for " + fname); 5011 } else { 5012 // This fragment was retained from a previous instance; get it 5013 // going now. 5014 fragment.mInLayout = true; 5015 // If this fragment is newly instantiated (either right now, or 5016 // from last saved state), then give it the attributes to 5017 // initialize itself. 5018 if (!fragment.mRetaining) { 5019 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 5020 } 5021 mFragments.moveToState(fragment); 5022 } 5023 5024 if (fragment.mView == null) { 5025 throw new IllegalStateException("Fragment " + fname 5026 + " did not create a view."); 5027 } 5028 if (id != 0) { 5029 fragment.mView.setId(id); 5030 } 5031 if (fragment.mView.getTag() == null) { 5032 fragment.mView.setTag(tag); 5033 } 5034 return fragment.mView; 5035 } 5036 5037 /** 5038 * Print the Activity's state into the given stream. This gets invoked if 5039 * you run "adb shell dumpsys activity <activity_component_name>". 5040 * 5041 * @param prefix Desired prefix to prepend at each line of output. 5042 * @param fd The raw file descriptor that the dump is being sent to. 5043 * @param writer The PrintWriter to which you should dump your state. This will be 5044 * closed for you after you return. 5045 * @param args additional arguments to the dump request. 5046 */ 5047 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5048 dumpInner(prefix, fd, writer, args); 5049 } 5050 5051 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5052 writer.print(prefix); writer.print("Local Activity "); 5053 writer.print(Integer.toHexString(System.identityHashCode(this))); 5054 writer.println(" State:"); 5055 String innerPrefix = prefix + " "; 5056 writer.print(innerPrefix); writer.print("mResumed="); 5057 writer.print(mResumed); writer.print(" mStopped="); 5058 writer.print(mStopped); writer.print(" mFinished="); 5059 writer.println(mFinished); 5060 writer.print(innerPrefix); writer.print("mLoadersStarted="); 5061 writer.println(mLoadersStarted); 5062 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5063 writer.println(mChangingConfigurations); 5064 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5065 writer.println(mCurrentConfig); 5066 5067 if (mLoaderManager != null) { 5068 writer.print(prefix); writer.print("Loader Manager "); 5069 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 5070 writer.println(":"); 5071 mLoaderManager.dump(prefix + " ", fd, writer, args); 5072 } 5073 5074 mFragments.dump(prefix, fd, writer, args); 5075 5076 if (getWindow() != null && 5077 getWindow().peekDecorView() != null && 5078 getWindow().peekDecorView().getViewRootImpl() != null) { 5079 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5080 } 5081 5082 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5083 } 5084 5085 /** 5086 * Bit indicating that this activity is "immersive" and should not be 5087 * interrupted by notifications if possible. 5088 * 5089 * This value is initially set by the manifest property 5090 * <code>android:immersive</code> but may be changed at runtime by 5091 * {@link #setImmersive}. 5092 * 5093 * @see #setImmersive(boolean) 5094 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5095 */ 5096 public boolean isImmersive() { 5097 try { 5098 return ActivityManagerNative.getDefault().isImmersive(mToken); 5099 } catch (RemoteException e) { 5100 return false; 5101 } 5102 } 5103 5104 /** 5105 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5106 * fullscreen opaque Activity. 5107 * <p> 5108 * Call this whenever the background of a translucent Activity has changed to become opaque. 5109 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5110 * <p> 5111 * This call has no effect on non-translucent activities or on activities with the 5112 * {@link android.R.attr#windowIsFloating} attribute. 5113 * 5114 * @see #convertToTranslucent(TranslucentConversionListener) 5115 * @see TranslucentConversionListener 5116 * 5117 * @hide 5118 */ 5119 public void convertFromTranslucent() { 5120 try { 5121 mTranslucentCallback = null; 5122 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5123 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5124 } 5125 } catch (RemoteException e) { 5126 // pass 5127 } 5128 } 5129 5130 /** 5131 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5132 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5133 * <p> 5134 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5135 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5136 * be called indicating that it is safe to make this activity translucent again. Until 5137 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5138 * behind the frontmost Activity will be indeterminate. 5139 * <p> 5140 * This call has no effect on non-translucent activities or on activities with the 5141 * {@link android.R.attr#windowIsFloating} attribute. 5142 * 5143 * @param callback the method to call when all visible Activities behind this one have been 5144 * drawn and it is safe to make this Activity translucent again. 5145 * 5146 * @see #convertFromTranslucent() 5147 * @see TranslucentConversionListener 5148 * 5149 * @hide 5150 */ 5151 public void convertToTranslucent(TranslucentConversionListener callback) { 5152 try { 5153 mTranslucentCallback = callback; 5154 mChangeCanvasToTranslucent = 5155 ActivityManagerNative.getDefault().convertToTranslucent(mToken); 5156 } catch (RemoteException e) { 5157 // pass 5158 } 5159 } 5160 5161 /** @hide */ 5162 void onTranslucentConversionComplete(boolean drawComplete) { 5163 if (mTranslucentCallback != null) { 5164 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5165 mTranslucentCallback = null; 5166 } 5167 if (mChangeCanvasToTranslucent) { 5168 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5169 } 5170 } 5171 5172 /** 5173 * Adjust the current immersive mode setting. 5174 * 5175 * Note that changing this value will have no effect on the activity's 5176 * {@link android.content.pm.ActivityInfo} structure; that is, if 5177 * <code>android:immersive</code> is set to <code>true</code> 5178 * in the application's manifest entry for this activity, the {@link 5179 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 5180 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5181 * FLAG_IMMERSIVE} bit set. 5182 * 5183 * @see #isImmersive() 5184 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5185 */ 5186 public void setImmersive(boolean i) { 5187 try { 5188 ActivityManagerNative.getDefault().setImmersive(mToken, i); 5189 } catch (RemoteException e) { 5190 // pass 5191 } 5192 } 5193 5194 /** 5195 * Start an action mode. 5196 * 5197 * @param callback Callback that will manage lifecycle events for this context mode 5198 * @return The ContextMode that was started, or null if it was canceled 5199 * 5200 * @see ActionMode 5201 */ 5202 @Nullable 5203 public ActionMode startActionMode(ActionMode.Callback callback) { 5204 return mWindow.getDecorView().startActionMode(callback); 5205 } 5206 5207 /** 5208 * Give the Activity a chance to control the UI for an action mode requested 5209 * by the system. 5210 * 5211 * <p>Note: If you are looking for a notification callback that an action mode 5212 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 5213 * 5214 * @param callback The callback that should control the new action mode 5215 * @return The new action mode, or <code>null</code> if the activity does not want to 5216 * provide special handling for this action mode. (It will be handled by the system.) 5217 */ 5218 @Nullable 5219 @Override 5220 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 5221 initWindowDecorActionBar(); 5222 if (mActionBar != null) { 5223 return mActionBar.startActionMode(callback); 5224 } 5225 return null; 5226 } 5227 5228 /** 5229 * Notifies the Activity that an action mode has been started. 5230 * Activity subclasses overriding this method should call the superclass implementation. 5231 * 5232 * @param mode The new action mode. 5233 */ 5234 @Override 5235 public void onActionModeStarted(ActionMode mode) { 5236 } 5237 5238 /** 5239 * Notifies the activity that an action mode has finished. 5240 * Activity subclasses overriding this method should call the superclass implementation. 5241 * 5242 * @param mode The action mode that just finished. 5243 */ 5244 @Override 5245 public void onActionModeFinished(ActionMode mode) { 5246 } 5247 5248 /** 5249 * Returns true if the app should recreate the task when navigating 'up' from this activity 5250 * by using targetIntent. 5251 * 5252 * <p>If this method returns false the app can trivially call 5253 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 5254 * up navigation. If this method returns false, the app should synthesize a new task stack 5255 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 5256 * 5257 * @param targetIntent An intent representing the target destination for up navigation 5258 * @return true if navigating up should recreate a new task stack, false if the same task 5259 * should be used for the destination 5260 */ 5261 public boolean shouldUpRecreateTask(Intent targetIntent) { 5262 try { 5263 PackageManager pm = getPackageManager(); 5264 ComponentName cn = targetIntent.getComponent(); 5265 if (cn == null) { 5266 cn = targetIntent.resolveActivity(pm); 5267 } 5268 ActivityInfo info = pm.getActivityInfo(cn, 0); 5269 if (info.taskAffinity == null) { 5270 return false; 5271 } 5272 return !ActivityManagerNative.getDefault() 5273 .targetTaskAffinityMatchesActivity(mToken, info.taskAffinity); 5274 } catch (RemoteException e) { 5275 return false; 5276 } catch (NameNotFoundException e) { 5277 return false; 5278 } 5279 } 5280 5281 /** 5282 * Navigate from this activity to the activity specified by upIntent, finishing this activity 5283 * in the process. If the activity indicated by upIntent already exists in the task's history, 5284 * this activity and all others before the indicated activity in the history stack will be 5285 * finished. 5286 * 5287 * <p>If the indicated activity does not appear in the history stack, this will finish 5288 * each activity in this task until the root activity of the task is reached, resulting in 5289 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 5290 * when an activity may be reached by a path not passing through a canonical parent 5291 * activity.</p> 5292 * 5293 * <p>This method should be used when performing up navigation from within the same task 5294 * as the destination. If up navigation should cross tasks in some cases, see 5295 * {@link #shouldUpRecreateTask(Intent)}.</p> 5296 * 5297 * @param upIntent An intent representing the target destination for up navigation 5298 * 5299 * @return true if up navigation successfully reached the activity indicated by upIntent and 5300 * upIntent was delivered to it. false if an instance of the indicated activity could 5301 * not be found and this activity was simply finished normally. 5302 */ 5303 public boolean navigateUpTo(Intent upIntent) { 5304 if (mParent == null) { 5305 ComponentName destInfo = upIntent.getComponent(); 5306 if (destInfo == null) { 5307 destInfo = upIntent.resolveActivity(getPackageManager()); 5308 if (destInfo == null) { 5309 return false; 5310 } 5311 upIntent = new Intent(upIntent); 5312 upIntent.setComponent(destInfo); 5313 } 5314 int resultCode; 5315 Intent resultData; 5316 synchronized (this) { 5317 resultCode = mResultCode; 5318 resultData = mResultData; 5319 } 5320 if (resultData != null) { 5321 resultData.prepareToLeaveProcess(); 5322 } 5323 try { 5324 upIntent.prepareToLeaveProcess(); 5325 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 5326 resultCode, resultData); 5327 } catch (RemoteException e) { 5328 return false; 5329 } 5330 } else { 5331 return mParent.navigateUpToFromChild(this, upIntent); 5332 } 5333 } 5334 5335 /** 5336 * This is called when a child activity of this one calls its 5337 * {@link #navigateUpTo} method. The default implementation simply calls 5338 * navigateUpTo(upIntent) on this activity (the parent). 5339 * 5340 * @param child The activity making the call. 5341 * @param upIntent An intent representing the target destination for up navigation 5342 * 5343 * @return true if up navigation successfully reached the activity indicated by upIntent and 5344 * upIntent was delivered to it. false if an instance of the indicated activity could 5345 * not be found and this activity was simply finished normally. 5346 */ 5347 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 5348 return navigateUpTo(upIntent); 5349 } 5350 5351 /** 5352 * Obtain an {@link Intent} that will launch an explicit target activity specified by 5353 * this activity's logical parent. The logical parent is named in the application's manifest 5354 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 5355 * Activity subclasses may override this method to modify the Intent returned by 5356 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 5357 * the parent intent entirely. 5358 * 5359 * @return a new Intent targeting the defined parent of this activity or null if 5360 * there is no valid parent. 5361 */ 5362 @Nullable 5363 public Intent getParentActivityIntent() { 5364 final String parentName = mActivityInfo.parentActivityName; 5365 if (TextUtils.isEmpty(parentName)) { 5366 return null; 5367 } 5368 5369 // If the parent itself has no parent, generate a main activity intent. 5370 final ComponentName target = new ComponentName(this, parentName); 5371 try { 5372 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 5373 final String parentActivity = parentInfo.parentActivityName; 5374 final Intent parentIntent = parentActivity == null 5375 ? Intent.makeMainActivity(target) 5376 : new Intent().setComponent(target); 5377 return parentIntent; 5378 } catch (NameNotFoundException e) { 5379 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 5380 "' in manifest"); 5381 return null; 5382 } 5383 } 5384 5385 /** 5386 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(android.view.Window, 5387 * android.app.ActivityOptions.ActivityTransitionListener)} was used to start an Activity, 5388 * the Window will be triggered to enter with a Transition. <code>listener</code> allows 5389 * The Activity to listen to events of the entering transition and control the mapping of 5390 * shared elements. This requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 5391 * 5392 * @param listener Used to listen to events in the entering transition. 5393 */ 5394 public void setActivityTransitionListener(ActivityOptions.ActivityTransitionListener listener) { 5395 if (mEnterTransitionCoordinator != null) { 5396 mEnterTransitionCoordinator.setActivityTransitionListener(listener); 5397 } 5398 } 5399 5400 // ------------------ Internal API ------------------ 5401 5402 final void setParent(Activity parent) { 5403 mParent = parent; 5404 } 5405 5406 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 5407 Application application, Intent intent, ActivityInfo info, CharSequence title, 5408 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 5409 Configuration config) { 5410 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 5411 lastNonConfigurationInstances, config); 5412 } 5413 5414 final void attach(Context context, ActivityThread aThread, 5415 Instrumentation instr, IBinder token, int ident, 5416 Application application, Intent intent, ActivityInfo info, 5417 CharSequence title, Activity parent, String id, 5418 NonConfigurationInstances lastNonConfigurationInstances, 5419 Configuration config) { 5420 attach(context, aThread, instr, token, ident, application, intent, info, title, parent, id, 5421 lastNonConfigurationInstances, config, null, null); 5422 } 5423 5424 final void attach(Context context, ActivityThread aThread, 5425 Instrumentation instr, IBinder token, int ident, 5426 Application application, Intent intent, ActivityInfo info, 5427 CharSequence title, Activity parent, String id, 5428 NonConfigurationInstances lastNonConfigurationInstances, 5429 Configuration config, Bundle options, IVoiceInteractor voiceInteractor) { 5430 attachBaseContext(context); 5431 5432 mFragments.attachActivity(this, mContainer, null); 5433 5434 mWindow = PolicyManager.makeNewWindow(this); 5435 mWindow.setCallback(this); 5436 mWindow.getLayoutInflater().setPrivateFactory(this); 5437 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 5438 mWindow.setSoftInputMode(info.softInputMode); 5439 } 5440 if (info.uiOptions != 0) { 5441 mWindow.setUiOptions(info.uiOptions); 5442 } 5443 mUiThread = Thread.currentThread(); 5444 5445 mMainThread = aThread; 5446 mInstrumentation = instr; 5447 mToken = token; 5448 mIdent = ident; 5449 mApplication = application; 5450 mIntent = intent; 5451 mComponent = intent.getComponent(); 5452 mActivityInfo = info; 5453 mTitle = title; 5454 mParent = parent; 5455 mEmbeddedID = id; 5456 mLastNonConfigurationInstances = lastNonConfigurationInstances; 5457 mVoiceInteractor = voiceInteractor != null 5458 ? new VoiceInteractor(this, this, voiceInteractor, Looper.myLooper()) : null; 5459 5460 mWindow.setWindowManager( 5461 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 5462 mToken, mComponent.flattenToString(), 5463 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 5464 if (mParent != null) { 5465 mWindow.setContainer(mParent.getWindow()); 5466 } 5467 mWindowManager = mWindow.getWindowManager(); 5468 mCurrentConfig = config; 5469 if (options != null) { 5470 ActivityOptions activityOptions = new ActivityOptions(options); 5471 if (activityOptions.getAnimationType() == ActivityOptions.ANIM_SCENE_TRANSITION) { 5472 mEnterTransitionCoordinator = activityOptions.createEnterActivityTransition(this); 5473 } 5474 } 5475 } 5476 5477 /** @hide */ 5478 public final IBinder getActivityToken() { 5479 return mParent != null ? mParent.getActivityToken() : mToken; 5480 } 5481 5482 final void performCreate(Bundle icicle) { 5483 onCreate(icicle); 5484 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 5485 com.android.internal.R.styleable.Window_windowNoDisplay, false); 5486 mFragments.dispatchActivityCreated(); 5487 } 5488 5489 final void performStart() { 5490 mFragments.noteStateNotSaved(); 5491 mCalled = false; 5492 mFragments.execPendingActions(); 5493 mInstrumentation.callActivityOnStart(this); 5494 if (!mCalled) { 5495 throw new SuperNotCalledException( 5496 "Activity " + mComponent.toShortString() + 5497 " did not call through to super.onStart()"); 5498 } 5499 mFragments.dispatchStart(); 5500 if (mAllLoaderManagers != null) { 5501 final int N = mAllLoaderManagers.size(); 5502 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 5503 for (int i=N-1; i>=0; i--) { 5504 loaders[i] = mAllLoaderManagers.valueAt(i); 5505 } 5506 for (int i=0; i<N; i++) { 5507 LoaderManagerImpl lm = loaders[i]; 5508 lm.finishRetain(); 5509 lm.doReportStart(); 5510 } 5511 } 5512 } 5513 5514 final void performRestart() { 5515 mFragments.noteStateNotSaved(); 5516 5517 if (mStopped) { 5518 mStopped = false; 5519 if (mToken != null && mParent == null) { 5520 WindowManagerGlobal.getInstance().setStoppedState(mToken, false); 5521 } 5522 5523 synchronized (mManagedCursors) { 5524 final int N = mManagedCursors.size(); 5525 for (int i=0; i<N; i++) { 5526 ManagedCursor mc = mManagedCursors.get(i); 5527 if (mc.mReleased || mc.mUpdated) { 5528 if (!mc.mCursor.requery()) { 5529 if (getApplicationInfo().targetSdkVersion 5530 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5531 throw new IllegalStateException( 5532 "trying to requery an already closed cursor " 5533 + mc.mCursor); 5534 } 5535 } 5536 mc.mReleased = false; 5537 mc.mUpdated = false; 5538 } 5539 } 5540 } 5541 5542 mCalled = false; 5543 mInstrumentation.callActivityOnRestart(this); 5544 if (!mCalled) { 5545 throw new SuperNotCalledException( 5546 "Activity " + mComponent.toShortString() + 5547 " did not call through to super.onRestart()"); 5548 } 5549 performStart(); 5550 } 5551 } 5552 5553 final void performResume() { 5554 performRestart(); 5555 5556 mFragments.execPendingActions(); 5557 5558 mLastNonConfigurationInstances = null; 5559 5560 mCalled = false; 5561 // mResumed is set by the instrumentation 5562 mInstrumentation.callActivityOnResume(this); 5563 if (!mCalled) { 5564 throw new SuperNotCalledException( 5565 "Activity " + mComponent.toShortString() + 5566 " did not call through to super.onResume()"); 5567 } 5568 5569 // Now really resume, and install the current status bar and menu. 5570 mCalled = false; 5571 5572 mFragments.dispatchResume(); 5573 mFragments.execPendingActions(); 5574 5575 onPostResume(); 5576 if (!mCalled) { 5577 throw new SuperNotCalledException( 5578 "Activity " + mComponent.toShortString() + 5579 " did not call through to super.onPostResume()"); 5580 } 5581 } 5582 5583 final void performPause() { 5584 mDoReportFullyDrawn = false; 5585 mFragments.dispatchPause(); 5586 mCalled = false; 5587 onPause(); 5588 mResumed = false; 5589 if (!mCalled && getApplicationInfo().targetSdkVersion 5590 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 5591 throw new SuperNotCalledException( 5592 "Activity " + mComponent.toShortString() + 5593 " did not call through to super.onPause()"); 5594 } 5595 mResumed = false; 5596 } 5597 5598 final void performUserLeaving() { 5599 onUserInteraction(); 5600 onUserLeaveHint(); 5601 } 5602 5603 final void performStop() { 5604 mDoReportFullyDrawn = false; 5605 if (mLoadersStarted) { 5606 mLoadersStarted = false; 5607 if (mLoaderManager != null) { 5608 if (!mChangingConfigurations) { 5609 mLoaderManager.doStop(); 5610 } else { 5611 mLoaderManager.doRetain(); 5612 } 5613 } 5614 } 5615 5616 if (!mStopped) { 5617 if (mWindow != null) { 5618 mWindow.closeAllPanels(); 5619 } 5620 5621 if (mToken != null && mParent == null) { 5622 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 5623 } 5624 5625 mFragments.dispatchStop(); 5626 5627 mCalled = false; 5628 mInstrumentation.callActivityOnStop(this); 5629 if (!mCalled) { 5630 throw new SuperNotCalledException( 5631 "Activity " + mComponent.toShortString() + 5632 " did not call through to super.onStop()"); 5633 } 5634 5635 synchronized (mManagedCursors) { 5636 final int N = mManagedCursors.size(); 5637 for (int i=0; i<N; i++) { 5638 ManagedCursor mc = mManagedCursors.get(i); 5639 if (!mc.mReleased) { 5640 mc.mCursor.deactivate(); 5641 mc.mReleased = true; 5642 } 5643 } 5644 } 5645 5646 mStopped = true; 5647 } 5648 mResumed = false; 5649 } 5650 5651 final void performDestroy() { 5652 mDestroyed = true; 5653 mWindow.destroy(); 5654 mFragments.dispatchDestroy(); 5655 onDestroy(); 5656 if (mLoaderManager != null) { 5657 mLoaderManager.doDestroy(); 5658 } 5659 } 5660 5661 /** 5662 * @hide 5663 */ 5664 public final boolean isResumed() { 5665 return mResumed; 5666 } 5667 5668 void dispatchActivityResult(String who, int requestCode, 5669 int resultCode, Intent data) { 5670 if (false) Log.v( 5671 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 5672 + ", resCode=" + resultCode + ", data=" + data); 5673 mFragments.noteStateNotSaved(); 5674 if (who == null) { 5675 onActivityResult(requestCode, resultCode, data); 5676 } else { 5677 Fragment frag = mFragments.findFragmentByWho(who); 5678 if (frag != null) { 5679 frag.onActivityResult(requestCode, resultCode, data); 5680 } 5681 } 5682 } 5683 5684 /** 5685 * Put this Activity in a mode where the user is locked to the 5686 * current task. 5687 * 5688 * This will prevent the user from launching other apps, going to settings, 5689 * or reaching the home screen. 5690 * 5691 * Lock task mode will only start if the activity has been whitelisted by the 5692 * Device Owner through DevicePolicyManager#setLockTaskComponents. 5693 */ 5694 public void startLockTask() { 5695 try { 5696 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 5697 } catch (RemoteException e) { 5698 } 5699 } 5700 5701 /** 5702 * Allow the user to switch away from the current task. 5703 * 5704 * Called to end the mode started by {@link Activity#startLockTask}. This 5705 * can only be called by activities that have successfully called 5706 * startLockTask previously. 5707 * 5708 * This will allow the user to exit this app and move onto other activities. 5709 */ 5710 public void stopLockTask() { 5711 try { 5712 ActivityManagerNative.getDefault().stopLockTaskMode(); 5713 } catch (RemoteException e) { 5714 } 5715 } 5716 5717 /** 5718 * Interface for informing a translucent {@link Activity} once all visible activities below it 5719 * have completed drawing. This is necessary only after an {@link Activity} has been made 5720 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 5721 * translucent again following a call to {@link 5722 * Activity#convertToTranslucent(TranslucentConversionListener)}. 5723 * 5724 * @hide 5725 */ 5726 public interface TranslucentConversionListener { 5727 /** 5728 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 5729 * below the top one have been redrawn. Following this callback it is safe to make the top 5730 * Activity translucent because the underlying Activity has been drawn. 5731 * 5732 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 5733 * occurred waiting for the Activity to complete drawing. 5734 * 5735 * @see Activity#convertFromTranslucent() 5736 * @see Activity#convertToTranslucent(TranslucentConversionListener) 5737 */ 5738 public void onTranslucentConversionComplete(boolean drawComplete); 5739 } 5740} 5741