Activity.java revision 371a809179c843d7ae661a10bc9b4b8cfcaff566
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.app; 18 19import android.annotation.NonNull; 20import android.os.PersistableBundle; 21import android.transition.Scene; 22import android.transition.TransitionManager; 23import android.util.ArrayMap; 24import android.util.SuperNotCalledException; 25import android.widget.Toolbar; 26import com.android.internal.app.IVoiceInteractor; 27import com.android.internal.app.WindowDecorActionBar; 28import com.android.internal.app.ToolbarActionBar; 29import com.android.internal.policy.PolicyManager; 30 31import android.annotation.IntDef; 32import android.annotation.Nullable; 33import android.app.admin.DevicePolicyManager; 34import android.content.ComponentCallbacks2; 35import android.content.ComponentName; 36import android.content.ContentResolver; 37import android.content.Context; 38import android.content.CursorLoader; 39import android.content.IIntentSender; 40import android.content.Intent; 41import android.content.IntentSender; 42import android.content.SharedPreferences; 43import android.content.pm.ActivityInfo; 44import android.content.pm.PackageManager; 45import android.content.pm.PackageManager.NameNotFoundException; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.content.res.TypedArray; 49import android.database.Cursor; 50import android.graphics.Bitmap; 51import android.graphics.Canvas; 52import android.graphics.drawable.Drawable; 53import android.media.AudioManager; 54import android.net.Uri; 55import android.os.Build; 56import android.os.Bundle; 57import android.os.Handler; 58import android.os.IBinder; 59import android.os.Looper; 60import android.os.Parcelable; 61import android.os.RemoteException; 62import android.os.StrictMode; 63import android.os.UserHandle; 64import android.text.Selection; 65import android.text.SpannableStringBuilder; 66import android.text.TextUtils; 67import android.text.method.TextKeyListener; 68import android.util.AttributeSet; 69import android.util.EventLog; 70import android.util.Log; 71import android.util.PrintWriterPrinter; 72import android.util.Slog; 73import android.util.SparseArray; 74import android.view.ActionMode; 75import android.view.ContextMenu; 76import android.view.ContextMenu.ContextMenuInfo; 77import android.view.ContextThemeWrapper; 78import android.view.KeyEvent; 79import android.view.LayoutInflater; 80import android.view.Menu; 81import android.view.MenuInflater; 82import android.view.MenuItem; 83import android.view.MotionEvent; 84import android.view.View; 85import android.view.View.OnCreateContextMenuListener; 86import android.view.ViewGroup; 87import android.view.ViewGroup.LayoutParams; 88import android.view.ViewManager; 89import android.view.Window; 90import android.view.WindowManager; 91import android.view.WindowManagerGlobal; 92import android.view.accessibility.AccessibilityEvent; 93import android.widget.AdapterView; 94 95import java.io.FileDescriptor; 96import java.io.PrintWriter; 97import java.lang.annotation.Retention; 98import java.lang.annotation.RetentionPolicy; 99import java.util.ArrayList; 100import java.util.HashMap; 101 102/** 103 * An activity is a single, focused thing that the user can do. Almost all 104 * activities interact with the user, so the Activity class takes care of 105 * creating a window for you in which you can place your UI with 106 * {@link #setContentView}. While activities are often presented to the user 107 * as full-screen windows, they can also be used in other ways: as floating 108 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 109 * or embedded inside of another activity (using {@link ActivityGroup}). 110 * 111 * There are two methods almost all subclasses of Activity will implement: 112 * 113 * <ul> 114 * <li> {@link #onCreate} is where you initialize your activity. Most 115 * importantly, here you will usually call {@link #setContentView(int)} 116 * with a layout resource defining your UI, and using {@link #findViewById} 117 * to retrieve the widgets in that UI that you need to interact with 118 * programmatically. 119 * 120 * <li> {@link #onPause} is where you deal with the user leaving your 121 * activity. Most importantly, any changes made by the user should at this 122 * point be committed (usually to the 123 * {@link android.content.ContentProvider} holding the data). 124 * </ul> 125 * 126 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 127 * activity classes must have a corresponding 128 * {@link android.R.styleable#AndroidManifestActivity <activity>} 129 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 130 * 131 * <p>Topics covered here: 132 * <ol> 133 * <li><a href="#Fragments">Fragments</a> 134 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 135 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 136 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 137 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 138 * <li><a href="#Permissions">Permissions</a> 139 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 140 * </ol> 141 * 142 * <div class="special reference"> 143 * <h3>Developer Guides</h3> 144 * <p>The Activity class is an important part of an application's overall lifecycle, 145 * and the way activities are launched and put together is a fundamental 146 * part of the platform's application model. For a detailed perspective on the structure of an 147 * Android application and how activities behave, please read the 148 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 149 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 150 * developer guides.</p> 151 * 152 * <p>You can also find a detailed discussion about how to create activities in the 153 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 154 * developer guide.</p> 155 * </div> 156 * 157 * <a name="Fragments"></a> 158 * <h3>Fragments</h3> 159 * 160 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 161 * implementations can make use of the {@link Fragment} class to better 162 * modularize their code, build more sophisticated user interfaces for larger 163 * screens, and help scale their application between small and large screens. 164 * 165 * <a name="ActivityLifecycle"></a> 166 * <h3>Activity Lifecycle</h3> 167 * 168 * <p>Activities in the system are managed as an <em>activity stack</em>. 169 * When a new activity is started, it is placed on the top of the stack 170 * and becomes the running activity -- the previous activity always remains 171 * below it in the stack, and will not come to the foreground again until 172 * the new activity exits.</p> 173 * 174 * <p>An activity has essentially four states:</p> 175 * <ul> 176 * <li> If an activity in the foreground of the screen (at the top of 177 * the stack), 178 * it is <em>active</em> or <em>running</em>. </li> 179 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 180 * or transparent activity has focus on top of your activity), it 181 * is <em>paused</em>. A paused activity is completely alive (it 182 * maintains all state and member information and remains attached to 183 * the window manager), but can be killed by the system in extreme 184 * low memory situations. 185 * <li>If an activity is completely obscured by another activity, 186 * it is <em>stopped</em>. It still retains all state and member information, 187 * however, it is no longer visible to the user so its window is hidden 188 * and it will often be killed by the system when memory is needed 189 * elsewhere.</li> 190 * <li>If an activity is paused or stopped, the system can drop the activity 191 * from memory by either asking it to finish, or simply killing its 192 * process. When it is displayed again to the user, it must be 193 * completely restarted and restored to its previous state.</li> 194 * </ul> 195 * 196 * <p>The following diagram shows the important state paths of an Activity. 197 * The square rectangles represent callback methods you can implement to 198 * perform operations when the Activity moves between states. The colored 199 * ovals are major states the Activity can be in.</p> 200 * 201 * <p><img src="../../../images/activity_lifecycle.png" 202 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 203 * 204 * <p>There are three key loops you may be interested in monitoring within your 205 * activity: 206 * 207 * <ul> 208 * <li>The <b>entire lifetime</b> of an activity happens between the first call 209 * to {@link android.app.Activity#onCreate} through to a single final call 210 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 211 * of "global" state in onCreate(), and release all remaining resources in 212 * onDestroy(). For example, if it has a thread running in the background 213 * to download data from the network, it may create that thread in onCreate() 214 * and then stop the thread in onDestroy(). 215 * 216 * <li>The <b>visible lifetime</b> of an activity happens between a call to 217 * {@link android.app.Activity#onStart} until a corresponding call to 218 * {@link android.app.Activity#onStop}. During this time the user can see the 219 * activity on-screen, though it may not be in the foreground and interacting 220 * with the user. Between these two methods you can maintain resources that 221 * are needed to show the activity to the user. For example, you can register 222 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 223 * that impact your UI, and unregister it in onStop() when the user no 224 * longer sees what you are displaying. The onStart() and onStop() methods 225 * can be called multiple times, as the activity becomes visible and hidden 226 * to the user. 227 * 228 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 229 * {@link android.app.Activity#onResume} until a corresponding call to 230 * {@link android.app.Activity#onPause}. During this time the activity is 231 * in front of all other activities and interacting with the user. An activity 232 * can frequently go between the resumed and paused states -- for example when 233 * the device goes to sleep, when an activity result is delivered, when a new 234 * intent is delivered -- so the code in these methods should be fairly 235 * lightweight. 236 * </ul> 237 * 238 * <p>The entire lifecycle of an activity is defined by the following 239 * Activity methods. All of these are hooks that you can override 240 * to do appropriate work when the activity changes state. All 241 * activities will implement {@link android.app.Activity#onCreate} 242 * to do their initial setup; many will also implement 243 * {@link android.app.Activity#onPause} to commit changes to data and 244 * otherwise prepare to stop interacting with the user. You should always 245 * call up to your superclass when implementing these methods.</p> 246 * 247 * </p> 248 * <pre class="prettyprint"> 249 * public class Activity extends ApplicationContext { 250 * protected void onCreate(Bundle savedInstanceState); 251 * 252 * protected void onStart(); 253 * 254 * protected void onRestart(); 255 * 256 * protected void onResume(); 257 * 258 * protected void onPause(); 259 * 260 * protected void onStop(); 261 * 262 * protected void onDestroy(); 263 * } 264 * </pre> 265 * 266 * <p>In general the movement through an activity's lifecycle looks like 267 * this:</p> 268 * 269 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 270 * <colgroup align="left" span="3" /> 271 * <colgroup align="left" /> 272 * <colgroup align="center" /> 273 * <colgroup align="center" /> 274 * 275 * <thead> 276 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 277 * </thead> 278 * 279 * <tbody> 280 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 281 * <td>Called when the activity is first created. 282 * This is where you should do all of your normal static set up: 283 * create views, bind data to lists, etc. This method also 284 * provides you with a Bundle containing the activity's previously 285 * frozen state, if there was one. 286 * <p>Always followed by <code>onStart()</code>.</td> 287 * <td align="center">No</td> 288 * <td align="center"><code>onStart()</code></td> 289 * </tr> 290 * 291 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 292 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 293 * <td>Called after your activity has been stopped, prior to it being 294 * started again. 295 * <p>Always followed by <code>onStart()</code></td> 296 * <td align="center">No</td> 297 * <td align="center"><code>onStart()</code></td> 298 * </tr> 299 * 300 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 301 * <td>Called when the activity is becoming visible to the user. 302 * <p>Followed by <code>onResume()</code> if the activity comes 303 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 304 * <td align="center">No</td> 305 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 306 * </tr> 307 * 308 * <tr><td rowspan="2" style="border-left: none;"> </td> 309 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 310 * <td>Called when the activity will start 311 * interacting with the user. At this point your activity is at 312 * the top of the activity stack, with user input going to it. 313 * <p>Always followed by <code>onPause()</code>.</td> 314 * <td align="center">No</td> 315 * <td align="center"><code>onPause()</code></td> 316 * </tr> 317 * 318 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 319 * <td>Called when the system is about to start resuming a previous 320 * activity. This is typically used to commit unsaved changes to 321 * persistent data, stop animations and other things that may be consuming 322 * CPU, etc. Implementations of this method must be very quick because 323 * the next activity will not be resumed until this method returns. 324 * <p>Followed by either <code>onResume()</code> if the activity 325 * returns back to the front, or <code>onStop()</code> if it becomes 326 * invisible to the user.</td> 327 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 328 * <td align="center"><code>onResume()</code> or<br> 329 * <code>onStop()</code></td> 330 * </tr> 331 * 332 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 333 * <td>Called when the activity is no longer visible to the user, because 334 * another activity has been resumed and is covering this one. This 335 * may happen either because a new activity is being started, an existing 336 * one is being brought in front of this one, or this one is being 337 * destroyed. 338 * <p>Followed by either <code>onRestart()</code> if 339 * this activity is coming back to interact with the user, or 340 * <code>onDestroy()</code> if this activity is going away.</td> 341 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 342 * <td align="center"><code>onRestart()</code> or<br> 343 * <code>onDestroy()</code></td> 344 * </tr> 345 * 346 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 347 * <td>The final call you receive before your 348 * activity is destroyed. This can happen either because the 349 * activity is finishing (someone called {@link Activity#finish} on 350 * it, or because the system is temporarily destroying this 351 * instance of the activity to save space. You can distinguish 352 * between these two scenarios with the {@link 353 * Activity#isFinishing} method.</td> 354 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 355 * <td align="center"><em>nothing</em></td> 356 * </tr> 357 * </tbody> 358 * </table> 359 * 360 * <p>Note the "Killable" column in the above table -- for those methods that 361 * are marked as being killable, after that method returns the process hosting the 362 * activity may killed by the system <em>at any time</em> without another line 363 * of its code being executed. Because of this, you should use the 364 * {@link #onPause} method to write any persistent data (such as user edits) 365 * to storage. In addition, the method 366 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 367 * in such a background state, allowing you to save away any dynamic instance 368 * state in your activity into the given Bundle, to be later received in 369 * {@link #onCreate} if the activity needs to be re-created. 370 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 371 * section for more information on how the lifecycle of a process is tied 372 * to the activities it is hosting. Note that it is important to save 373 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 374 * because the latter is not part of the lifecycle callbacks, so will not 375 * be called in every situation as described in its documentation.</p> 376 * 377 * <p class="note">Be aware that these semantics will change slightly between 378 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 379 * vs. those targeting prior platforms. Starting with Honeycomb, an application 380 * is not in the killable state until its {@link #onStop} has returned. This 381 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 382 * safely called after {@link #onPause()} and allows and application to safely 383 * wait until {@link #onStop()} to save persistent state.</p> 384 * 385 * <p>For those methods that are not marked as being killable, the activity's 386 * process will not be killed by the system starting from the time the method 387 * is called and continuing after it returns. Thus an activity is in the killable 388 * state, for example, between after <code>onPause()</code> to the start of 389 * <code>onResume()</code>.</p> 390 * 391 * <a name="ConfigurationChanges"></a> 392 * <h3>Configuration Changes</h3> 393 * 394 * <p>If the configuration of the device (as defined by the 395 * {@link Configuration Resources.Configuration} class) changes, 396 * then anything displaying a user interface will need to update to match that 397 * configuration. Because Activity is the primary mechanism for interacting 398 * with the user, it includes special support for handling configuration 399 * changes.</p> 400 * 401 * <p>Unless you specify otherwise, a configuration change (such as a change 402 * in screen orientation, language, input devices, etc) will cause your 403 * current activity to be <em>destroyed</em>, going through the normal activity 404 * lifecycle process of {@link #onPause}, 405 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 406 * had been in the foreground or visible to the user, once {@link #onDestroy} is 407 * called in that instance then a new instance of the activity will be 408 * created, with whatever savedInstanceState the previous instance had generated 409 * from {@link #onSaveInstanceState}.</p> 410 * 411 * <p>This is done because any application resource, 412 * including layout files, can change based on any configuration value. Thus 413 * the only safe way to handle a configuration change is to re-retrieve all 414 * resources, including layouts, drawables, and strings. Because activities 415 * must already know how to save their state and re-create themselves from 416 * that state, this is a convenient way to have an activity restart itself 417 * with a new configuration.</p> 418 * 419 * <p>In some special cases, you may want to bypass restarting of your 420 * activity based on one or more types of configuration changes. This is 421 * done with the {@link android.R.attr#configChanges android:configChanges} 422 * attribute in its manifest. For any types of configuration changes you say 423 * that you handle there, you will receive a call to your current activity's 424 * {@link #onConfigurationChanged} method instead of being restarted. If 425 * a configuration change involves any that you do not handle, however, the 426 * activity will still be restarted and {@link #onConfigurationChanged} 427 * will not be called.</p> 428 * 429 * <a name="StartingActivities"></a> 430 * <h3>Starting Activities and Getting Results</h3> 431 * 432 * <p>The {@link android.app.Activity#startActivity} 433 * method is used to start a 434 * new activity, which will be placed at the top of the activity stack. It 435 * takes a single argument, an {@link android.content.Intent Intent}, 436 * which describes the activity 437 * to be executed.</p> 438 * 439 * <p>Sometimes you want to get a result back from an activity when it 440 * ends. For example, you may start an activity that lets the user pick 441 * a person in a list of contacts; when it ends, it returns the person 442 * that was selected. To do this, you call the 443 * {@link android.app.Activity#startActivityForResult(Intent, int)} 444 * version with a second integer parameter identifying the call. The result 445 * will come back through your {@link android.app.Activity#onActivityResult} 446 * method.</p> 447 * 448 * <p>When an activity exits, it can call 449 * {@link android.app.Activity#setResult(int)} 450 * to return data back to its parent. It must always supply a result code, 451 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 452 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 453 * return back an Intent containing any additional data it wants. All of this 454 * information appears back on the 455 * parent's <code>Activity.onActivityResult()</code>, along with the integer 456 * identifier it originally supplied.</p> 457 * 458 * <p>If a child activity fails for any reason (such as crashing), the parent 459 * activity will receive a result with the code RESULT_CANCELED.</p> 460 * 461 * <pre class="prettyprint"> 462 * public class MyActivity extends Activity { 463 * ... 464 * 465 * static final int PICK_CONTACT_REQUEST = 0; 466 * 467 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 468 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 469 * // When the user center presses, let them pick a contact. 470 * startActivityForResult( 471 * new Intent(Intent.ACTION_PICK, 472 * new Uri("content://contacts")), 473 * PICK_CONTACT_REQUEST); 474 * return true; 475 * } 476 * return false; 477 * } 478 * 479 * protected void onActivityResult(int requestCode, int resultCode, 480 * Intent data) { 481 * if (requestCode == PICK_CONTACT_REQUEST) { 482 * if (resultCode == RESULT_OK) { 483 * // A contact was picked. Here we will just display it 484 * // to the user. 485 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 486 * } 487 * } 488 * } 489 * } 490 * </pre> 491 * 492 * <a name="SavingPersistentState"></a> 493 * <h3>Saving Persistent State</h3> 494 * 495 * <p>There are generally two kinds of persistent state than an activity 496 * will deal with: shared document-like data (typically stored in a SQLite 497 * database using a {@linkplain android.content.ContentProvider content provider}) 498 * and internal state such as user preferences.</p> 499 * 500 * <p>For content provider data, we suggest that activities use a 501 * "edit in place" user model. That is, any edits a user makes are effectively 502 * made immediately without requiring an additional confirmation step. 503 * Supporting this model is generally a simple matter of following two rules:</p> 504 * 505 * <ul> 506 * <li> <p>When creating a new document, the backing database entry or file for 507 * it is created immediately. For example, if the user chooses to write 508 * a new e-mail, a new entry for that e-mail is created as soon as they 509 * start entering data, so that if they go to any other activity after 510 * that point this e-mail will now appear in the list of drafts.</p> 511 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 512 * commit to the backing content provider or file any changes the user 513 * has made. This ensures that those changes will be seen by any other 514 * activity that is about to run. You will probably want to commit 515 * your data even more aggressively at key times during your 516 * activity's lifecycle: for example before starting a new 517 * activity, before finishing your own activity, when the user 518 * switches between input fields, etc.</p> 519 * </ul> 520 * 521 * <p>This model is designed to prevent data loss when a user is navigating 522 * between activities, and allows the system to safely kill an activity (because 523 * system resources are needed somewhere else) at any time after it has been 524 * paused. Note this implies 525 * that the user pressing BACK from your activity does <em>not</em> 526 * mean "cancel" -- it means to leave the activity with its current contents 527 * saved away. Canceling edits in an activity must be provided through 528 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 529 * 530 * <p>See the {@linkplain android.content.ContentProvider content package} for 531 * more information about content providers. These are a key aspect of how 532 * different activities invoke and propagate data between themselves.</p> 533 * 534 * <p>The Activity class also provides an API for managing internal persistent state 535 * associated with an activity. This can be used, for example, to remember 536 * the user's preferred initial display in a calendar (day view or week view) 537 * or the user's default home page in a web browser.</p> 538 * 539 * <p>Activity persistent state is managed 540 * with the method {@link #getPreferences}, 541 * allowing you to retrieve and 542 * modify a set of name/value pairs associated with the activity. To use 543 * preferences that are shared across multiple application components 544 * (activities, receivers, services, providers), you can use the underlying 545 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 546 * to retrieve a preferences 547 * object stored under a specific name. 548 * (Note that it is not possible to share settings data across application 549 * packages -- for that you will need a content provider.)</p> 550 * 551 * <p>Here is an excerpt from a calendar activity that stores the user's 552 * preferred view mode in its persistent settings:</p> 553 * 554 * <pre class="prettyprint"> 555 * public class CalendarActivity extends Activity { 556 * ... 557 * 558 * static final int DAY_VIEW_MODE = 0; 559 * static final int WEEK_VIEW_MODE = 1; 560 * 561 * private SharedPreferences mPrefs; 562 * private int mCurViewMode; 563 * 564 * protected void onCreate(Bundle savedInstanceState) { 565 * super.onCreate(savedInstanceState); 566 * 567 * SharedPreferences mPrefs = getSharedPreferences(); 568 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 569 * } 570 * 571 * protected void onPause() { 572 * super.onPause(); 573 * 574 * SharedPreferences.Editor ed = mPrefs.edit(); 575 * ed.putInt("view_mode", mCurViewMode); 576 * ed.commit(); 577 * } 578 * } 579 * </pre> 580 * 581 * <a name="Permissions"></a> 582 * <h3>Permissions</h3> 583 * 584 * <p>The ability to start a particular Activity can be enforced when it is 585 * declared in its 586 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 587 * tag. By doing so, other applications will need to declare a corresponding 588 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 589 * element in their own manifest to be able to start that activity. 590 * 591 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 592 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 593 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 594 * Activity access to the specific URIs in the Intent. Access will remain 595 * until the Activity has finished (it will remain across the hosting 596 * process being killed and other temporary destruction). As of 597 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 598 * was already created and a new Intent is being delivered to 599 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 600 * to the existing ones it holds. 601 * 602 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 603 * document for more information on permissions and security in general. 604 * 605 * <a name="ProcessLifecycle"></a> 606 * <h3>Process Lifecycle</h3> 607 * 608 * <p>The Android system attempts to keep application process around for as 609 * long as possible, but eventually will need to remove old processes when 610 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 611 * Lifecycle</a>, the decision about which process to remove is intimately 612 * tied to the state of the user's interaction with it. In general, there 613 * are four states a process can be in based on the activities running in it, 614 * listed here in order of importance. The system will kill less important 615 * processes (the last ones) before it resorts to killing more important 616 * processes (the first ones). 617 * 618 * <ol> 619 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 620 * that the user is currently interacting with) is considered the most important. 621 * Its process will only be killed as a last resort, if it uses more memory 622 * than is available on the device. Generally at this point the device has 623 * reached a memory paging state, so this is required in order to keep the user 624 * interface responsive. 625 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 626 * but not in the foreground, such as one sitting behind a foreground dialog) 627 * is considered extremely important and will not be killed unless that is 628 * required to keep the foreground activity running. 629 * <li> <p>A <b>background activity</b> (an activity that is not visible to 630 * the user and has been paused) is no longer critical, so the system may 631 * safely kill its process to reclaim memory for other foreground or 632 * visible processes. If its process needs to be killed, when the user navigates 633 * back to the activity (making it visible on the screen again), its 634 * {@link #onCreate} method will be called with the savedInstanceState it had previously 635 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 636 * state as the user last left it. 637 * <li> <p>An <b>empty process</b> is one hosting no activities or other 638 * application components (such as {@link Service} or 639 * {@link android.content.BroadcastReceiver} classes). These are killed very 640 * quickly by the system as memory becomes low. For this reason, any 641 * background operation you do outside of an activity must be executed in the 642 * context of an activity BroadcastReceiver or Service to ensure that the system 643 * knows it needs to keep your process around. 644 * </ol> 645 * 646 * <p>Sometimes an Activity may need to do a long-running operation that exists 647 * independently of the activity lifecycle itself. An example may be a camera 648 * application that allows you to upload a picture to a web site. The upload 649 * may take a long time, and the application should allow the user to leave 650 * the application will it is executing. To accomplish this, your Activity 651 * should start a {@link Service} in which the upload takes place. This allows 652 * the system to properly prioritize your process (considering it to be more 653 * important than other non-visible applications) for the duration of the 654 * upload, independent of whether the original activity is paused, stopped, 655 * or finished. 656 */ 657public class Activity extends ContextThemeWrapper 658 implements LayoutInflater.Factory2, 659 Window.Callback, KeyEvent.Callback, 660 OnCreateContextMenuListener, ComponentCallbacks2, 661 Window.OnWindowDismissedCallback { 662 private static final String TAG = "Activity"; 663 private static final boolean DEBUG_LIFECYCLE = false; 664 665 /** Standard activity result: operation canceled. */ 666 public static final int RESULT_CANCELED = 0; 667 /** Standard activity result: operation succeeded. */ 668 public static final int RESULT_OK = -1; 669 /** Start of user-defined activity results. */ 670 public static final int RESULT_FIRST_USER = 1; 671 672 static final String FRAGMENTS_TAG = "android:fragments"; 673 674 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 675 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 676 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 677 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 678 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 679 680 private static class ManagedDialog { 681 Dialog mDialog; 682 Bundle mArgs; 683 } 684 private SparseArray<ManagedDialog> mManagedDialogs; 685 686 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 687 private Instrumentation mInstrumentation; 688 private IBinder mToken; 689 private int mIdent; 690 /*package*/ String mEmbeddedID; 691 private Application mApplication; 692 /*package*/ Intent mIntent; 693 private ComponentName mComponent; 694 /*package*/ ActivityInfo mActivityInfo; 695 /*package*/ ActivityThread mMainThread; 696 Activity mParent; 697 boolean mCalled; 698 boolean mCheckedForLoaderManager; 699 boolean mLoadersStarted; 700 /*package*/ boolean mResumed; 701 private boolean mStopped; 702 boolean mFinished; 703 boolean mStartedActivity; 704 private boolean mDestroyed; 705 private boolean mDoReportFullyDrawn = true; 706 /** true if the activity is going through a transient pause */ 707 /*package*/ boolean mTemporaryPause = false; 708 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 709 /*package*/ boolean mChangingConfigurations = false; 710 /*package*/ int mConfigChangeFlags; 711 /*package*/ Configuration mCurrentConfig; 712 private SearchManager mSearchManager; 713 private MenuInflater mMenuInflater; 714 715 static final class NonConfigurationInstances { 716 Object activity; 717 HashMap<String, Object> children; 718 ArrayList<Fragment> fragments; 719 ArrayMap<String, LoaderManagerImpl> loaders; 720 VoiceInteractor voiceInteractor; 721 } 722 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 723 724 private Window mWindow; 725 726 private WindowManager mWindowManager; 727 /*package*/ View mDecor = null; 728 /*package*/ boolean mWindowAdded = false; 729 /*package*/ boolean mVisibleFromServer = false; 730 /*package*/ boolean mVisibleFromClient = true; 731 /*package*/ ActionBar mActionBar = null; 732 private boolean mEnableDefaultActionBarUp; 733 734 private VoiceInteractor mVoiceInteractor; 735 736 private CharSequence mTitle; 737 private int mTitleColor = 0; 738 739 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 740 final FragmentContainer mContainer = new FragmentContainer() { 741 @Override 742 public View findViewById(int id) { 743 return Activity.this.findViewById(id); 744 } 745 }; 746 747 ArrayMap<String, LoaderManagerImpl> mAllLoaderManagers; 748 LoaderManagerImpl mLoaderManager; 749 750 private static final class ManagedCursor { 751 ManagedCursor(Cursor cursor) { 752 mCursor = cursor; 753 mReleased = false; 754 mUpdated = false; 755 } 756 757 private final Cursor mCursor; 758 private boolean mReleased; 759 private boolean mUpdated; 760 } 761 private final ArrayList<ManagedCursor> mManagedCursors = 762 new ArrayList<ManagedCursor>(); 763 764 // protected by synchronized (this) 765 int mResultCode = RESULT_CANCELED; 766 Intent mResultData = null; 767 private TranslucentConversionListener mTranslucentCallback; 768 private boolean mChangeCanvasToTranslucent; 769 770 private boolean mTitleReady = false; 771 772 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 773 private SpannableStringBuilder mDefaultKeySsb = null; 774 775 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 776 777 @SuppressWarnings("unused") 778 private final Object mInstanceTracker = StrictMode.trackActivity(this); 779 780 private Thread mUiThread; 781 final Handler mHandler = new Handler(); 782 783 private ActivityTransitionState mActivityTransitionState = new ActivityTransitionState(); 784 SharedElementListener mEnterTransitionListener = SharedElementListener.NULL_LISTENER; 785 SharedElementListener mExitTransitionListener = SharedElementListener.NULL_LISTENER; 786 787 /** Return the intent that started this activity. */ 788 public Intent getIntent() { 789 return mIntent; 790 } 791 792 /** 793 * Change the intent returned by {@link #getIntent}. This holds a 794 * reference to the given intent; it does not copy it. Often used in 795 * conjunction with {@link #onNewIntent}. 796 * 797 * @param newIntent The new Intent object to return from getIntent 798 * 799 * @see #getIntent 800 * @see #onNewIntent 801 */ 802 public void setIntent(Intent newIntent) { 803 mIntent = newIntent; 804 } 805 806 /** Return the application that owns this activity. */ 807 public final Application getApplication() { 808 return mApplication; 809 } 810 811 /** Is this activity embedded inside of another activity? */ 812 public final boolean isChild() { 813 return mParent != null; 814 } 815 816 /** Return the parent activity if this view is an embedded child. */ 817 public final Activity getParent() { 818 return mParent; 819 } 820 821 /** Retrieve the window manager for showing custom windows. */ 822 public WindowManager getWindowManager() { 823 return mWindowManager; 824 } 825 826 /** 827 * Retrieve the current {@link android.view.Window} for the activity. 828 * This can be used to directly access parts of the Window API that 829 * are not available through Activity/Screen. 830 * 831 * @return Window The current window, or null if the activity is not 832 * visual. 833 */ 834 public Window getWindow() { 835 return mWindow; 836 } 837 838 /** 839 * Return the LoaderManager for this activity, creating it if needed. 840 */ 841 public LoaderManager getLoaderManager() { 842 if (mLoaderManager != null) { 843 return mLoaderManager; 844 } 845 mCheckedForLoaderManager = true; 846 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, true); 847 return mLoaderManager; 848 } 849 850 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) { 851 if (mAllLoaderManagers == null) { 852 mAllLoaderManagers = new ArrayMap<String, LoaderManagerImpl>(); 853 } 854 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 855 if (lm == null) { 856 if (create) { 857 lm = new LoaderManagerImpl(who, this, started); 858 mAllLoaderManagers.put(who, lm); 859 } 860 } else { 861 lm.updateActivity(this); 862 } 863 return lm; 864 } 865 866 /** 867 * Calls {@link android.view.Window#getCurrentFocus} on the 868 * Window of this Activity to return the currently focused view. 869 * 870 * @return View The current View with focus or null. 871 * 872 * @see #getWindow 873 * @see android.view.Window#getCurrentFocus 874 */ 875 @Nullable 876 public View getCurrentFocus() { 877 return mWindow != null ? mWindow.getCurrentFocus() : null; 878 } 879 880 /** 881 * Called when the activity is starting. This is where most initialization 882 * should go: calling {@link #setContentView(int)} to inflate the 883 * activity's UI, using {@link #findViewById} to programmatically interact 884 * with widgets in the UI, calling 885 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 886 * cursors for data being displayed, etc. 887 * 888 * <p>You can call {@link #finish} from within this function, in 889 * which case onDestroy() will be immediately called without any of the rest 890 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 891 * {@link #onPause}, etc) executing. 892 * 893 * <p><em>Derived classes must call through to the super class's 894 * implementation of this method. If they do not, an exception will be 895 * thrown.</em></p> 896 * 897 * @param savedInstanceState If the activity is being re-initialized after 898 * previously being shut down then this Bundle contains the data it most 899 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 900 * 901 * @see #onStart 902 * @see #onSaveInstanceState 903 * @see #onRestoreInstanceState 904 * @see #onPostCreate 905 */ 906 protected void onCreate(@Nullable Bundle savedInstanceState) { 907 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 908 if (mLastNonConfigurationInstances != null) { 909 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 910 } 911 if (mActivityInfo.parentActivityName != null) { 912 if (mActionBar == null) { 913 mEnableDefaultActionBarUp = true; 914 } else { 915 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 916 } 917 } 918 if (savedInstanceState != null) { 919 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 920 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 921 ? mLastNonConfigurationInstances.fragments : null); 922 } 923 mFragments.dispatchCreate(); 924 getApplication().dispatchActivityCreated(this, savedInstanceState); 925 if (mVoiceInteractor != null) { 926 mVoiceInteractor.attachActivity(this); 927 } 928 mCalled = true; 929 } 930 931 /** 932 * Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with 933 * the attribute {@link android.R.attr#persistableMode} set to 934 * <code>persistAcrossReboots</code>. 935 * 936 * @param savedInstanceState if the activity is being re-initialized after 937 * previously being shut down then this Bundle contains the data it most 938 * recently supplied in {@link #onSaveInstanceState}. 939 * <b><i>Note: Otherwise it is null.</i></b> 940 * @param persistentState if the activity is being re-initialized after 941 * previously being shut down or powered off then this Bundle contains the data it most 942 * recently supplied to outPersistentState in {@link #onSaveInstanceState}. 943 * <b><i>Note: Otherwise it is null.</i></b> 944 * 945 * @see #onCreate(android.os.Bundle) 946 * @see #onStart 947 * @see #onSaveInstanceState 948 * @see #onRestoreInstanceState 949 * @see #onPostCreate 950 */ 951 protected void onCreate(@Nullable Bundle savedInstanceState, 952 @Nullable PersistableBundle persistentState) { 953 onCreate(savedInstanceState); 954 } 955 956 /** 957 * The hook for {@link ActivityThread} to restore the state of this activity. 958 * 959 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 960 * {@link #restoreManagedDialogs(android.os.Bundle)}. 961 * 962 * @param savedInstanceState contains the saved state 963 */ 964 final void performRestoreInstanceState(Bundle savedInstanceState) { 965 onRestoreInstanceState(savedInstanceState); 966 restoreManagedDialogs(savedInstanceState); 967 } 968 969 /** 970 * The hook for {@link ActivityThread} to restore the state of this activity. 971 * 972 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 973 * {@link #restoreManagedDialogs(android.os.Bundle)}. 974 * 975 * @param savedInstanceState contains the saved state 976 * @param persistentState contains the persistable saved state 977 */ 978 final void performRestoreInstanceState(Bundle savedInstanceState, 979 PersistableBundle persistentState) { 980 onRestoreInstanceState(savedInstanceState, persistentState); 981 if (savedInstanceState != null) { 982 restoreManagedDialogs(savedInstanceState); 983 } 984 } 985 986 /** 987 * This method is called after {@link #onStart} when the activity is 988 * being re-initialized from a previously saved state, given here in 989 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 990 * to restore their state, but it is sometimes convenient to do it here 991 * after all of the initialization has been done or to allow subclasses to 992 * decide whether to use your default implementation. The default 993 * implementation of this method performs a restore of any view state that 994 * had previously been frozen by {@link #onSaveInstanceState}. 995 * 996 * <p>This method is called between {@link #onStart} and 997 * {@link #onPostCreate}. 998 * 999 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1000 * 1001 * @see #onCreate 1002 * @see #onPostCreate 1003 * @see #onResume 1004 * @see #onSaveInstanceState 1005 */ 1006 protected void onRestoreInstanceState(Bundle savedInstanceState) { 1007 if (mWindow != null) { 1008 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 1009 if (windowState != null) { 1010 mWindow.restoreHierarchyState(windowState); 1011 } 1012 } 1013 } 1014 1015 /** 1016 * This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities 1017 * created with the attribute {@link android.R.attr#persistableMode} set to 1018 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1019 * came from the restored PersistableBundle first 1020 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1021 * 1022 * <p>This method is called between {@link #onStart} and 1023 * {@link #onPostCreate}. 1024 * 1025 * <p>If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called. 1026 * 1027 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 1028 * @param persistentState the data most recently supplied in {@link #onSaveInstanceState}. 1029 * 1030 * @see #onRestoreInstanceState(Bundle) 1031 * @see #onCreate 1032 * @see #onPostCreate 1033 * @see #onResume 1034 * @see #onSaveInstanceState 1035 */ 1036 protected void onRestoreInstanceState(Bundle savedInstanceState, 1037 PersistableBundle persistentState) { 1038 if (savedInstanceState != null) { 1039 onRestoreInstanceState(savedInstanceState); 1040 } 1041 } 1042 1043 /** 1044 * Restore the state of any saved managed dialogs. 1045 * 1046 * @param savedInstanceState The bundle to restore from. 1047 */ 1048 private void restoreManagedDialogs(Bundle savedInstanceState) { 1049 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 1050 if (b == null) { 1051 return; 1052 } 1053 1054 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 1055 final int numDialogs = ids.length; 1056 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 1057 for (int i = 0; i < numDialogs; i++) { 1058 final Integer dialogId = ids[i]; 1059 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 1060 if (dialogState != null) { 1061 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 1062 // so tell createDialog() not to do it, otherwise we get an exception 1063 final ManagedDialog md = new ManagedDialog(); 1064 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 1065 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 1066 if (md.mDialog != null) { 1067 mManagedDialogs.put(dialogId, md); 1068 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 1069 md.mDialog.onRestoreInstanceState(dialogState); 1070 } 1071 } 1072 } 1073 } 1074 1075 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 1076 final Dialog dialog = onCreateDialog(dialogId, args); 1077 if (dialog == null) { 1078 return null; 1079 } 1080 dialog.dispatchOnCreate(state); 1081 return dialog; 1082 } 1083 1084 private static String savedDialogKeyFor(int key) { 1085 return SAVED_DIALOG_KEY_PREFIX + key; 1086 } 1087 1088 private static String savedDialogArgsKeyFor(int key) { 1089 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 1090 } 1091 1092 /** 1093 * Called when activity start-up is complete (after {@link #onStart} 1094 * and {@link #onRestoreInstanceState} have been called). Applications will 1095 * generally not implement this method; it is intended for system 1096 * classes to do final initialization after application code has run. 1097 * 1098 * <p><em>Derived classes must call through to the super class's 1099 * implementation of this method. If they do not, an exception will be 1100 * thrown.</em></p> 1101 * 1102 * @param savedInstanceState If the activity is being re-initialized after 1103 * previously being shut down then this Bundle contains the data it most 1104 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1105 * @see #onCreate 1106 */ 1107 protected void onPostCreate(@Nullable Bundle savedInstanceState) { 1108 if (!isChild()) { 1109 mTitleReady = true; 1110 onTitleChanged(getTitle(), getTitleColor()); 1111 } 1112 mCalled = true; 1113 } 1114 1115 /** 1116 * This is the same as {@link #onPostCreate(Bundle)} but is called for activities 1117 * created with the attribute {@link android.R.attr#persistableMode} set to 1118 * <code>persistAcrossReboots</code>. 1119 * 1120 * @param savedInstanceState The data most recently supplied in {@link #onSaveInstanceState} 1121 * @param persistentState The data caming from the PersistableBundle first 1122 * saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}. 1123 * 1124 * @see #onCreate 1125 */ 1126 protected void onPostCreate(@Nullable Bundle savedInstanceState, 1127 @Nullable PersistableBundle persistentState) { 1128 onPostCreate(savedInstanceState); 1129 } 1130 1131 /** 1132 * Called after {@link #onCreate} — or after {@link #onRestart} when 1133 * the activity had been stopped, but is now again being displayed to the 1134 * user. It will be followed by {@link #onResume}. 1135 * 1136 * <p><em>Derived classes must call through to the super class's 1137 * implementation of this method. If they do not, an exception will be 1138 * thrown.</em></p> 1139 * 1140 * @see #onCreate 1141 * @see #onStop 1142 * @see #onResume 1143 */ 1144 protected void onStart() { 1145 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1146 mCalled = true; 1147 1148 if (!mLoadersStarted) { 1149 mLoadersStarted = true; 1150 if (mLoaderManager != null) { 1151 mLoaderManager.doStart(); 1152 } else if (!mCheckedForLoaderManager) { 1153 mLoaderManager = getLoaderManager("(root)", mLoadersStarted, false); 1154 } 1155 mCheckedForLoaderManager = true; 1156 } 1157 1158 getApplication().dispatchActivityStarted(this); 1159 } 1160 1161 /** 1162 * Called after {@link #onStop} when the current activity is being 1163 * re-displayed to the user (the user has navigated back to it). It will 1164 * be followed by {@link #onStart} and then {@link #onResume}. 1165 * 1166 * <p>For activities that are using raw {@link Cursor} objects (instead of 1167 * creating them through 1168 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1169 * this is usually the place 1170 * where the cursor should be requeried (because you had deactivated it in 1171 * {@link #onStop}. 1172 * 1173 * <p><em>Derived classes must call through to the super class's 1174 * implementation of this method. If they do not, an exception will be 1175 * thrown.</em></p> 1176 * 1177 * @see #onStop 1178 * @see #onStart 1179 * @see #onResume 1180 */ 1181 protected void onRestart() { 1182 mCalled = true; 1183 } 1184 1185 /** 1186 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1187 * {@link #onPause}, for your activity to start interacting with the user. 1188 * This is a good place to begin animations, open exclusive-access devices 1189 * (such as the camera), etc. 1190 * 1191 * <p>Keep in mind that onResume is not the best indicator that your activity 1192 * is visible to the user; a system window such as the keyguard may be in 1193 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1194 * activity is visible to the user (for example, to resume a game). 1195 * 1196 * <p><em>Derived classes must call through to the super class's 1197 * implementation of this method. If they do not, an exception will be 1198 * thrown.</em></p> 1199 * 1200 * @see #onRestoreInstanceState 1201 * @see #onRestart 1202 * @see #onPostResume 1203 * @see #onPause 1204 */ 1205 protected void onResume() { 1206 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1207 getApplication().dispatchActivityResumed(this); 1208 mActivityTransitionState.onResume(); 1209 mCalled = true; 1210 } 1211 1212 /** 1213 * Called when activity resume is complete (after {@link #onResume} has 1214 * been called). Applications will generally not implement this method; 1215 * it is intended for system classes to do final setup after application 1216 * resume code has run. 1217 * 1218 * <p><em>Derived classes must call through to the super class's 1219 * implementation of this method. If they do not, an exception will be 1220 * thrown.</em></p> 1221 * 1222 * @see #onResume 1223 */ 1224 protected void onPostResume() { 1225 final Window win = getWindow(); 1226 if (win != null) win.makeActive(); 1227 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1228 mCalled = true; 1229 } 1230 1231 /** 1232 * Check whether this activity is running as part of a voice interaction with the user. 1233 * If true, it should perform its interaction with the user through the 1234 * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}. 1235 */ 1236 public boolean isVoiceInteraction() { 1237 return mVoiceInteractor != null; 1238 } 1239 1240 /** 1241 * Retrieve the active {@link VoiceInteractor} that the user is going through to 1242 * interact with this activity. 1243 */ 1244 public VoiceInteractor getVoiceInteractor() { 1245 return mVoiceInteractor; 1246 } 1247 1248 /** 1249 * This is called for activities that set launchMode to "singleTop" in 1250 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1251 * flag when calling {@link #startActivity}. In either case, when the 1252 * activity is re-launched while at the top of the activity stack instead 1253 * of a new instance of the activity being started, onNewIntent() will be 1254 * called on the existing instance with the Intent that was used to 1255 * re-launch it. 1256 * 1257 * <p>An activity will always be paused before receiving a new intent, so 1258 * you can count on {@link #onResume} being called after this method. 1259 * 1260 * <p>Note that {@link #getIntent} still returns the original Intent. You 1261 * can use {@link #setIntent} to update it to this new Intent. 1262 * 1263 * @param intent The new intent that was started for the activity. 1264 * 1265 * @see #getIntent 1266 * @see #setIntent 1267 * @see #onResume 1268 */ 1269 protected void onNewIntent(Intent intent) { 1270 } 1271 1272 /** 1273 * The hook for {@link ActivityThread} to save the state of this activity. 1274 * 1275 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1276 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1277 * 1278 * @param outState The bundle to save the state to. 1279 */ 1280 final void performSaveInstanceState(Bundle outState) { 1281 onSaveInstanceState(outState); 1282 saveManagedDialogs(outState); 1283 mActivityTransitionState.saveState(outState); 1284 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1285 } 1286 1287 /** 1288 * The hook for {@link ActivityThread} to save the state of this activity. 1289 * 1290 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1291 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1292 * 1293 * @param outState The bundle to save the state to. 1294 * @param outPersistentState The bundle to save persistent state to. 1295 */ 1296 final void performSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1297 onSaveInstanceState(outState, outPersistentState); 1298 saveManagedDialogs(outState); 1299 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + 1300 ", " + outPersistentState); 1301 } 1302 1303 /** 1304 * Called to retrieve per-instance state from an activity before being killed 1305 * so that the state can be restored in {@link #onCreate} or 1306 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1307 * will be passed to both). 1308 * 1309 * <p>This method is called before an activity may be killed so that when it 1310 * comes back some time in the future it can restore its state. For example, 1311 * if activity B is launched in front of activity A, and at some point activity 1312 * A is killed to reclaim resources, activity A will have a chance to save the 1313 * current state of its user interface via this method so that when the user 1314 * returns to activity A, the state of the user interface can be restored 1315 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1316 * 1317 * <p>Do not confuse this method with activity lifecycle callbacks such as 1318 * {@link #onPause}, which is always called when an activity is being placed 1319 * in the background or on its way to destruction, or {@link #onStop} which 1320 * is called before destruction. One example of when {@link #onPause} and 1321 * {@link #onStop} is called and not this method is when a user navigates back 1322 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1323 * on B because that particular instance will never be restored, so the 1324 * system avoids calling it. An example when {@link #onPause} is called and 1325 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1326 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1327 * killed during the lifetime of B since the state of the user interface of 1328 * A will stay intact. 1329 * 1330 * <p>The default implementation takes care of most of the UI per-instance 1331 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1332 * view in the hierarchy that has an id, and by saving the id of the currently 1333 * focused view (all of which is restored by the default implementation of 1334 * {@link #onRestoreInstanceState}). If you override this method to save additional 1335 * information not captured by each individual view, you will likely want to 1336 * call through to the default implementation, otherwise be prepared to save 1337 * all of the state of each view yourself. 1338 * 1339 * <p>If called, this method will occur before {@link #onStop}. There are 1340 * no guarantees about whether it will occur before or after {@link #onPause}. 1341 * 1342 * @param outState Bundle in which to place your saved state. 1343 * 1344 * @see #onCreate 1345 * @see #onRestoreInstanceState 1346 * @see #onPause 1347 */ 1348 protected void onSaveInstanceState(Bundle outState) { 1349 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1350 Parcelable p = mFragments.saveAllState(); 1351 if (p != null) { 1352 outState.putParcelable(FRAGMENTS_TAG, p); 1353 } 1354 getApplication().dispatchActivitySaveInstanceState(this, outState); 1355 } 1356 1357 /** 1358 * This is the same as {@link #onSaveInstanceState} but is called for activities 1359 * created with the attribute {@link android.R.attr#persistableMode} set to 1360 * <code>persistAcrossReboots</code>. The {@link android.os.PersistableBundle} passed 1361 * in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} 1362 * the first time that this activity is restarted following the next device reboot. 1363 * 1364 * @param outState Bundle in which to place your saved state. 1365 * @param outPersistentState State which will be saved across reboots. 1366 * 1367 * @see #onSaveInstanceState(Bundle) 1368 * @see #onCreate 1369 * @see #onRestoreInstanceState(Bundle, PersistableBundle) 1370 * @see #onPause 1371 */ 1372 protected void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { 1373 onSaveInstanceState(outState); 1374 } 1375 1376 /** 1377 * Save the state of any managed dialogs. 1378 * 1379 * @param outState place to store the saved state. 1380 */ 1381 private void saveManagedDialogs(Bundle outState) { 1382 if (mManagedDialogs == null) { 1383 return; 1384 } 1385 1386 final int numDialogs = mManagedDialogs.size(); 1387 if (numDialogs == 0) { 1388 return; 1389 } 1390 1391 Bundle dialogState = new Bundle(); 1392 1393 int[] ids = new int[mManagedDialogs.size()]; 1394 1395 // save each dialog's bundle, gather the ids 1396 for (int i = 0; i < numDialogs; i++) { 1397 final int key = mManagedDialogs.keyAt(i); 1398 ids[i] = key; 1399 final ManagedDialog md = mManagedDialogs.valueAt(i); 1400 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1401 if (md.mArgs != null) { 1402 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1403 } 1404 } 1405 1406 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1407 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1408 } 1409 1410 1411 /** 1412 * Called as part of the activity lifecycle when an activity is going into 1413 * the background, but has not (yet) been killed. The counterpart to 1414 * {@link #onResume}. 1415 * 1416 * <p>When activity B is launched in front of activity A, this callback will 1417 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1418 * so be sure to not do anything lengthy here. 1419 * 1420 * <p>This callback is mostly used for saving any persistent state the 1421 * activity is editing, to present a "edit in place" model to the user and 1422 * making sure nothing is lost if there are not enough resources to start 1423 * the new activity without first killing this one. This is also a good 1424 * place to do things like stop animations and other things that consume a 1425 * noticeable amount of CPU in order to make the switch to the next activity 1426 * as fast as possible, or to close resources that are exclusive access 1427 * such as the camera. 1428 * 1429 * <p>In situations where the system needs more memory it may kill paused 1430 * processes to reclaim resources. Because of this, you should be sure 1431 * that all of your state is saved by the time you return from 1432 * this function. In general {@link #onSaveInstanceState} is used to save 1433 * per-instance state in the activity and this method is used to store 1434 * global persistent data (in content providers, files, etc.) 1435 * 1436 * <p>After receiving this call you will usually receive a following call 1437 * to {@link #onStop} (after the next activity has been resumed and 1438 * displayed), however in some cases there will be a direct call back to 1439 * {@link #onResume} without going through the stopped state. 1440 * 1441 * <p><em>Derived classes must call through to the super class's 1442 * implementation of this method. If they do not, an exception will be 1443 * thrown.</em></p> 1444 * 1445 * @see #onResume 1446 * @see #onSaveInstanceState 1447 * @see #onStop 1448 */ 1449 protected void onPause() { 1450 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1451 getApplication().dispatchActivityPaused(this); 1452 mCalled = true; 1453 } 1454 1455 /** 1456 * Called as part of the activity lifecycle when an activity is about to go 1457 * into the background as the result of user choice. For example, when the 1458 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1459 * when an incoming phone call causes the in-call Activity to be automatically 1460 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1461 * the activity being interrupted. In cases when it is invoked, this method 1462 * is called right before the activity's {@link #onPause} callback. 1463 * 1464 * <p>This callback and {@link #onUserInteraction} are intended to help 1465 * activities manage status bar notifications intelligently; specifically, 1466 * for helping activities determine the proper time to cancel a notfication. 1467 * 1468 * @see #onUserInteraction() 1469 */ 1470 protected void onUserLeaveHint() { 1471 } 1472 1473 /** 1474 * Generate a new thumbnail for this activity. This method is called before 1475 * pausing the activity, and should draw into <var>outBitmap</var> the 1476 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1477 * can use the given <var>canvas</var>, which is configured to draw into the 1478 * bitmap, for rendering if desired. 1479 * 1480 * <p>The default implementation returns fails and does not draw a thumbnail; 1481 * this will result in the platform creating its own thumbnail if needed. 1482 * 1483 * @param outBitmap The bitmap to contain the thumbnail. 1484 * @param canvas Can be used to render into the bitmap. 1485 * 1486 * @return Return true if you have drawn into the bitmap; otherwise after 1487 * you return it will be filled with a default thumbnail. 1488 * 1489 * @see #onCreateDescription 1490 * @see #onSaveInstanceState 1491 * @see #onPause 1492 */ 1493 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1494 return false; 1495 } 1496 1497 /** 1498 * Generate a new description for this activity. This method is called 1499 * before pausing the activity and can, if desired, return some textual 1500 * description of its current state to be displayed to the user. 1501 * 1502 * <p>The default implementation returns null, which will cause you to 1503 * inherit the description from the previous activity. If all activities 1504 * return null, generally the label of the top activity will be used as the 1505 * description. 1506 * 1507 * @return A description of what the user is doing. It should be short and 1508 * sweet (only a few words). 1509 * 1510 * @see #onCreateThumbnail 1511 * @see #onSaveInstanceState 1512 * @see #onPause 1513 */ 1514 @Nullable 1515 public CharSequence onCreateDescription() { 1516 return null; 1517 } 1518 1519 /** 1520 * This is called when the user is requesting an assist, to build a full 1521 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1522 * application. You can override this method to place into the bundle anything 1523 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1524 * of the assist Intent. The default implementation does nothing. 1525 * 1526 * <p>This function will be called after any global assist callbacks that had 1527 * been registered with {@link Application#registerOnProvideAssistDataListener 1528 * Application.registerOnProvideAssistDataListener}. 1529 */ 1530 public void onProvideAssistData(Bundle data) { 1531 } 1532 1533 /** 1534 * Called when you are no longer visible to the user. You will next 1535 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1536 * depending on later user activity. 1537 * 1538 * <p>Note that this method may never be called, in low memory situations 1539 * where the system does not have enough memory to keep your activity's 1540 * process running after its {@link #onPause} method is called. 1541 * 1542 * <p><em>Derived classes must call through to the super class's 1543 * implementation of this method. If they do not, an exception will be 1544 * thrown.</em></p> 1545 * 1546 * @see #onRestart 1547 * @see #onResume 1548 * @see #onSaveInstanceState 1549 * @see #onDestroy 1550 */ 1551 protected void onStop() { 1552 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1553 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1554 mActivityTransitionState.onStop(); 1555 getApplication().dispatchActivityStopped(this); 1556 mTranslucentCallback = null; 1557 mCalled = true; 1558 } 1559 1560 /** 1561 * Perform any final cleanup before an activity is destroyed. This can 1562 * happen either because the activity is finishing (someone called 1563 * {@link #finish} on it, or because the system is temporarily destroying 1564 * this instance of the activity to save space. You can distinguish 1565 * between these two scenarios with the {@link #isFinishing} method. 1566 * 1567 * <p><em>Note: do not count on this method being called as a place for 1568 * saving data! For example, if an activity is editing data in a content 1569 * provider, those edits should be committed in either {@link #onPause} or 1570 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1571 * free resources like threads that are associated with an activity, so 1572 * that a destroyed activity does not leave such things around while the 1573 * rest of its application is still running. There are situations where 1574 * the system will simply kill the activity's hosting process without 1575 * calling this method (or any others) in it, so it should not be used to 1576 * do things that are intended to remain around after the process goes 1577 * away. 1578 * 1579 * <p><em>Derived classes must call through to the super class's 1580 * implementation of this method. If they do not, an exception will be 1581 * thrown.</em></p> 1582 * 1583 * @see #onPause 1584 * @see #onStop 1585 * @see #finish 1586 * @see #isFinishing 1587 */ 1588 protected void onDestroy() { 1589 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1590 mCalled = true; 1591 1592 // dismiss any dialogs we are managing. 1593 if (mManagedDialogs != null) { 1594 final int numDialogs = mManagedDialogs.size(); 1595 for (int i = 0; i < numDialogs; i++) { 1596 final ManagedDialog md = mManagedDialogs.valueAt(i); 1597 if (md.mDialog.isShowing()) { 1598 md.mDialog.dismiss(); 1599 } 1600 } 1601 mManagedDialogs = null; 1602 } 1603 1604 // close any cursors we are managing. 1605 synchronized (mManagedCursors) { 1606 int numCursors = mManagedCursors.size(); 1607 for (int i = 0; i < numCursors; i++) { 1608 ManagedCursor c = mManagedCursors.get(i); 1609 if (c != null) { 1610 c.mCursor.close(); 1611 } 1612 } 1613 mManagedCursors.clear(); 1614 } 1615 1616 // Close any open search dialog 1617 if (mSearchManager != null) { 1618 mSearchManager.stopSearch(); 1619 } 1620 1621 getApplication().dispatchActivityDestroyed(this); 1622 } 1623 1624 /** 1625 * Report to the system that your app is now fully drawn, purely for diagnostic 1626 * purposes (calling it does not impact the visible behavior of the activity). 1627 * This is only used to help instrument application launch times, so that the 1628 * app can report when it is fully in a usable state; without this, the only thing 1629 * the system itself can determine is the point at which the activity's window 1630 * is <em>first</em> drawn and displayed. To participate in app launch time 1631 * measurement, you should always call this method after first launch (when 1632 * {@link #onCreate(android.os.Bundle)} is called), at the point where you have 1633 * entirely drawn your UI and populated with all of the significant data. You 1634 * can safely call this method any time after first launch as well, in which case 1635 * it will simply be ignored. 1636 */ 1637 public void reportFullyDrawn() { 1638 if (mDoReportFullyDrawn) { 1639 mDoReportFullyDrawn = false; 1640 try { 1641 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1642 } catch (RemoteException e) { 1643 } 1644 } 1645 } 1646 1647 /** 1648 * Called by the system when the device configuration changes while your 1649 * activity is running. Note that this will <em>only</em> be called if 1650 * you have selected configurations you would like to handle with the 1651 * {@link android.R.attr#configChanges} attribute in your manifest. If 1652 * any configuration change occurs that is not selected to be reported 1653 * by that attribute, then instead of reporting it the system will stop 1654 * and restart the activity (to have it launched with the new 1655 * configuration). 1656 * 1657 * <p>At the time that this function has been called, your Resources 1658 * object will have been updated to return resource values matching the 1659 * new configuration. 1660 * 1661 * @param newConfig The new device configuration. 1662 */ 1663 public void onConfigurationChanged(Configuration newConfig) { 1664 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1665 mCalled = true; 1666 1667 mFragments.dispatchConfigurationChanged(newConfig); 1668 1669 if (mWindow != null) { 1670 // Pass the configuration changed event to the window 1671 mWindow.onConfigurationChanged(newConfig); 1672 } 1673 1674 if (mActionBar != null) { 1675 // Do this last; the action bar will need to access 1676 // view changes from above. 1677 mActionBar.onConfigurationChanged(newConfig); 1678 } 1679 } 1680 1681 /** 1682 * If this activity is being destroyed because it can not handle a 1683 * configuration parameter being changed (and thus its 1684 * {@link #onConfigurationChanged(Configuration)} method is 1685 * <em>not</em> being called), then you can use this method to discover 1686 * the set of changes that have occurred while in the process of being 1687 * destroyed. Note that there is no guarantee that these will be 1688 * accurate (other changes could have happened at any time), so you should 1689 * only use this as an optimization hint. 1690 * 1691 * @return Returns a bit field of the configuration parameters that are 1692 * changing, as defined by the {@link android.content.res.Configuration} 1693 * class. 1694 */ 1695 public int getChangingConfigurations() { 1696 return mConfigChangeFlags; 1697 } 1698 1699 /** 1700 * Retrieve the non-configuration instance data that was previously 1701 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1702 * be available from the initial {@link #onCreate} and 1703 * {@link #onStart} calls to the new instance, allowing you to extract 1704 * any useful dynamic state from the previous instance. 1705 * 1706 * <p>Note that the data you retrieve here should <em>only</em> be used 1707 * as an optimization for handling configuration changes. You should always 1708 * be able to handle getting a null pointer back, and an activity must 1709 * still be able to restore itself to its previous state (through the 1710 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1711 * function returns null. 1712 * 1713 * @return Returns the object previously returned by 1714 * {@link #onRetainNonConfigurationInstance()}. 1715 * 1716 * @deprecated Use the new {@link Fragment} API 1717 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1718 * available on older platforms through the Android compatibility package. 1719 */ 1720 @Nullable 1721 @Deprecated 1722 public Object getLastNonConfigurationInstance() { 1723 return mLastNonConfigurationInstances != null 1724 ? mLastNonConfigurationInstances.activity : null; 1725 } 1726 1727 /** 1728 * Called by the system, as part of destroying an 1729 * activity due to a configuration change, when it is known that a new 1730 * instance will immediately be created for the new configuration. You 1731 * can return any object you like here, including the activity instance 1732 * itself, which can later be retrieved by calling 1733 * {@link #getLastNonConfigurationInstance()} in the new activity 1734 * instance. 1735 * 1736 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1737 * or later, consider instead using a {@link Fragment} with 1738 * {@link Fragment#setRetainInstance(boolean) 1739 * Fragment.setRetainInstance(boolean}.</em> 1740 * 1741 * <p>This function is called purely as an optimization, and you must 1742 * not rely on it being called. When it is called, a number of guarantees 1743 * will be made to help optimize configuration switching: 1744 * <ul> 1745 * <li> The function will be called between {@link #onStop} and 1746 * {@link #onDestroy}. 1747 * <li> A new instance of the activity will <em>always</em> be immediately 1748 * created after this one's {@link #onDestroy()} is called. In particular, 1749 * <em>no</em> messages will be dispatched during this time (when the returned 1750 * object does not have an activity to be associated with). 1751 * <li> The object you return here will <em>always</em> be available from 1752 * the {@link #getLastNonConfigurationInstance()} method of the following 1753 * activity instance as described there. 1754 * </ul> 1755 * 1756 * <p>These guarantees are designed so that an activity can use this API 1757 * to propagate extensive state from the old to new activity instance, from 1758 * loaded bitmaps, to network connections, to evenly actively running 1759 * threads. Note that you should <em>not</em> propagate any data that 1760 * may change based on the configuration, including any data loaded from 1761 * resources such as strings, layouts, or drawables. 1762 * 1763 * <p>The guarantee of no message handling during the switch to the next 1764 * activity simplifies use with active objects. For example if your retained 1765 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1766 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1767 * not be called from the call here until you execute the next instance's 1768 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1769 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1770 * running in a separate thread.) 1771 * 1772 * @return Return any Object holding the desired state to propagate to the 1773 * next activity instance. 1774 * 1775 * @deprecated Use the new {@link Fragment} API 1776 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1777 * available on older platforms through the Android compatibility package. 1778 */ 1779 public Object onRetainNonConfigurationInstance() { 1780 return null; 1781 } 1782 1783 /** 1784 * Retrieve the non-configuration instance data that was previously 1785 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1786 * be available from the initial {@link #onCreate} and 1787 * {@link #onStart} calls to the new instance, allowing you to extract 1788 * any useful dynamic state from the previous instance. 1789 * 1790 * <p>Note that the data you retrieve here should <em>only</em> be used 1791 * as an optimization for handling configuration changes. You should always 1792 * be able to handle getting a null pointer back, and an activity must 1793 * still be able to restore itself to its previous state (through the 1794 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1795 * function returns null. 1796 * 1797 * @return Returns the object previously returned by 1798 * {@link #onRetainNonConfigurationChildInstances()} 1799 */ 1800 @Nullable 1801 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1802 return mLastNonConfigurationInstances != null 1803 ? mLastNonConfigurationInstances.children : null; 1804 } 1805 1806 /** 1807 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1808 * it should return either a mapping from child activity id strings to arbitrary objects, 1809 * or null. This method is intended to be used by Activity framework subclasses that control a 1810 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1811 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1812 */ 1813 @Nullable 1814 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1815 return null; 1816 } 1817 1818 NonConfigurationInstances retainNonConfigurationInstances() { 1819 Object activity = onRetainNonConfigurationInstance(); 1820 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1821 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1822 boolean retainLoaders = false; 1823 if (mAllLoaderManagers != null) { 1824 // prune out any loader managers that were already stopped and so 1825 // have nothing useful to retain. 1826 final int N = mAllLoaderManagers.size(); 1827 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 1828 for (int i=N-1; i>=0; i--) { 1829 loaders[i] = mAllLoaderManagers.valueAt(i); 1830 } 1831 for (int i=0; i<N; i++) { 1832 LoaderManagerImpl lm = loaders[i]; 1833 if (lm.mRetaining) { 1834 retainLoaders = true; 1835 } else { 1836 lm.doDestroy(); 1837 mAllLoaderManagers.remove(lm.mWho); 1838 } 1839 } 1840 } 1841 if (activity == null && children == null && fragments == null && !retainLoaders 1842 && mVoiceInteractor == null) { 1843 return null; 1844 } 1845 1846 NonConfigurationInstances nci = new NonConfigurationInstances(); 1847 nci.activity = activity; 1848 nci.children = children; 1849 nci.fragments = fragments; 1850 nci.loaders = mAllLoaderManagers; 1851 nci.voiceInteractor = mVoiceInteractor; 1852 return nci; 1853 } 1854 1855 public void onLowMemory() { 1856 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1857 mCalled = true; 1858 mFragments.dispatchLowMemory(); 1859 } 1860 1861 public void onTrimMemory(int level) { 1862 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1863 mCalled = true; 1864 mFragments.dispatchTrimMemory(level); 1865 } 1866 1867 /** 1868 * Return the FragmentManager for interacting with fragments associated 1869 * with this activity. 1870 */ 1871 public FragmentManager getFragmentManager() { 1872 return mFragments; 1873 } 1874 1875 void invalidateFragment(String who) { 1876 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1877 if (mAllLoaderManagers != null) { 1878 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 1879 if (lm != null && !lm.mRetaining) { 1880 lm.doDestroy(); 1881 mAllLoaderManagers.remove(who); 1882 } 1883 } 1884 } 1885 1886 /** 1887 * Called when a Fragment is being attached to this activity, immediately 1888 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1889 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1890 */ 1891 public void onAttachFragment(Fragment fragment) { 1892 } 1893 1894 /** 1895 * Wrapper around 1896 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1897 * that gives the resulting {@link Cursor} to call 1898 * {@link #startManagingCursor} so that the activity will manage its 1899 * lifecycle for you. 1900 * 1901 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1902 * or later, consider instead using {@link LoaderManager} instead, available 1903 * via {@link #getLoaderManager()}.</em> 1904 * 1905 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1906 * this method, because the activity will do that for you at the appropriate time. However, if 1907 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1908 * not</em> automatically close the cursor and, in that case, you must call 1909 * {@link Cursor#close()}.</p> 1910 * 1911 * @param uri The URI of the content provider to query. 1912 * @param projection List of columns to return. 1913 * @param selection SQL WHERE clause. 1914 * @param sortOrder SQL ORDER BY clause. 1915 * 1916 * @return The Cursor that was returned by query(). 1917 * 1918 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1919 * @see #startManagingCursor 1920 * @hide 1921 * 1922 * @deprecated Use {@link CursorLoader} instead. 1923 */ 1924 @Deprecated 1925 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1926 String sortOrder) { 1927 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1928 if (c != null) { 1929 startManagingCursor(c); 1930 } 1931 return c; 1932 } 1933 1934 /** 1935 * Wrapper around 1936 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1937 * that gives the resulting {@link Cursor} to call 1938 * {@link #startManagingCursor} so that the activity will manage its 1939 * lifecycle for you. 1940 * 1941 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1942 * or later, consider instead using {@link LoaderManager} instead, available 1943 * via {@link #getLoaderManager()}.</em> 1944 * 1945 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1946 * this method, because the activity will do that for you at the appropriate time. However, if 1947 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1948 * not</em> automatically close the cursor and, in that case, you must call 1949 * {@link Cursor#close()}.</p> 1950 * 1951 * @param uri The URI of the content provider to query. 1952 * @param projection List of columns to return. 1953 * @param selection SQL WHERE clause. 1954 * @param selectionArgs The arguments to selection, if any ?s are pesent 1955 * @param sortOrder SQL ORDER BY clause. 1956 * 1957 * @return The Cursor that was returned by query(). 1958 * 1959 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1960 * @see #startManagingCursor 1961 * 1962 * @deprecated Use {@link CursorLoader} instead. 1963 */ 1964 @Deprecated 1965 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1966 String[] selectionArgs, String sortOrder) { 1967 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1968 if (c != null) { 1969 startManagingCursor(c); 1970 } 1971 return c; 1972 } 1973 1974 /** 1975 * This method allows the activity to take care of managing the given 1976 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1977 * That is, when the activity is stopped it will automatically call 1978 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1979 * it will call {@link Cursor#requery} for you. When the activity is 1980 * destroyed, all managed Cursors will be closed automatically. 1981 * 1982 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1983 * or later, consider instead using {@link LoaderManager} instead, available 1984 * via {@link #getLoaderManager()}.</em> 1985 * 1986 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1987 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1988 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 1989 * <em>will not</em> automatically close the cursor and, in that case, you must call 1990 * {@link Cursor#close()}.</p> 1991 * 1992 * @param c The Cursor to be managed. 1993 * 1994 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1995 * @see #stopManagingCursor 1996 * 1997 * @deprecated Use the new {@link android.content.CursorLoader} class with 1998 * {@link LoaderManager} instead; this is also 1999 * available on older platforms through the Android compatibility package. 2000 */ 2001 @Deprecated 2002 public void startManagingCursor(Cursor c) { 2003 synchronized (mManagedCursors) { 2004 mManagedCursors.add(new ManagedCursor(c)); 2005 } 2006 } 2007 2008 /** 2009 * Given a Cursor that was previously given to 2010 * {@link #startManagingCursor}, stop the activity's management of that 2011 * cursor. 2012 * 2013 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 2014 * the system <em>will not</em> automatically close the cursor and you must call 2015 * {@link Cursor#close()}.</p> 2016 * 2017 * @param c The Cursor that was being managed. 2018 * 2019 * @see #startManagingCursor 2020 * 2021 * @deprecated Use the new {@link android.content.CursorLoader} class with 2022 * {@link LoaderManager} instead; this is also 2023 * available on older platforms through the Android compatibility package. 2024 */ 2025 @Deprecated 2026 public void stopManagingCursor(Cursor c) { 2027 synchronized (mManagedCursors) { 2028 final int N = mManagedCursors.size(); 2029 for (int i=0; i<N; i++) { 2030 ManagedCursor mc = mManagedCursors.get(i); 2031 if (mc.mCursor == c) { 2032 mManagedCursors.remove(i); 2033 break; 2034 } 2035 } 2036 } 2037 } 2038 2039 /** 2040 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 2041 * this is a no-op. 2042 * @hide 2043 */ 2044 @Deprecated 2045 public void setPersistent(boolean isPersistent) { 2046 } 2047 2048 /** 2049 * Finds a view that was identified by the id attribute from the XML that 2050 * was processed in {@link #onCreate}. 2051 * 2052 * @return The view if found or null otherwise. 2053 */ 2054 public View findViewById(int id) { 2055 return getWindow().findViewById(id); 2056 } 2057 2058 /** 2059 * Retrieve a reference to this activity's ActionBar. 2060 * 2061 * @return The Activity's ActionBar, or null if it does not have one. 2062 */ 2063 @Nullable 2064 public ActionBar getActionBar() { 2065 initWindowDecorActionBar(); 2066 return mActionBar; 2067 } 2068 2069 /** 2070 * Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this 2071 * Activity window. 2072 * 2073 * <p>When set to a non-null value the {@link #getActionBar()} method will return 2074 * an {@link ActionBar} object that can be used to control the given toolbar as if it were 2075 * a traditional window decor action bar. The toolbar's menu will be populated with the 2076 * Activity's options menu and the navigation button will be wired through the standard 2077 * {@link android.R.id#home home} menu select action.</p> 2078 * 2079 * <p>In order to use a Toolbar within the Activity's window content the application 2080 * must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.</p> 2081 * 2082 * @param toolbar Toolbar to set as the Activity's action bar 2083 */ 2084 public void setActionBar(@Nullable Toolbar toolbar) { 2085 if (getActionBar() instanceof WindowDecorActionBar) { 2086 throw new IllegalStateException("This Activity already has an action bar supplied " + 2087 "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + 2088 "android:windowActionBar to false in your theme to use a Toolbar instead."); 2089 } 2090 mActionBar = new ToolbarActionBar(toolbar, getTitle(), this); 2091 mActionBar.invalidateOptionsMenu(); 2092 } 2093 2094 /** 2095 * Creates a new ActionBar, locates the inflated ActionBarView, 2096 * initializes the ActionBar with the view, and sets mActionBar. 2097 */ 2098 private void initWindowDecorActionBar() { 2099 Window window = getWindow(); 2100 2101 // Initializing the window decor can change window feature flags. 2102 // Make sure that we have the correct set before performing the test below. 2103 window.getDecorView(); 2104 2105 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 2106 return; 2107 } 2108 2109 mActionBar = new WindowDecorActionBar(this); 2110 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 2111 2112 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 2113 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 2114 } 2115 2116 /** 2117 * Set the activity content from a layout resource. The resource will be 2118 * inflated, adding all top-level views to the activity. 2119 * 2120 * @param layoutResID Resource ID to be inflated. 2121 * 2122 * @see #setContentView(android.view.View) 2123 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2124 */ 2125 public void setContentView(int layoutResID) { 2126 getWindow().setContentView(layoutResID); 2127 initWindowDecorActionBar(); 2128 } 2129 2130 /** 2131 * Set the activity content to an explicit view. This view is placed 2132 * directly into the activity's view hierarchy. It can itself be a complex 2133 * view hierarchy. When calling this method, the layout parameters of the 2134 * specified view are ignored. Both the width and the height of the view are 2135 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 2136 * your own layout parameters, invoke 2137 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 2138 * instead. 2139 * 2140 * @param view The desired content to display. 2141 * 2142 * @see #setContentView(int) 2143 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 2144 */ 2145 public void setContentView(View view) { 2146 getWindow().setContentView(view); 2147 initWindowDecorActionBar(); 2148 } 2149 2150 /** 2151 * Set the activity content to an explicit view. This view is placed 2152 * directly into the activity's view hierarchy. It can itself be a complex 2153 * view hierarchy. 2154 * 2155 * @param view The desired content to display. 2156 * @param params Layout parameters for the view. 2157 * 2158 * @see #setContentView(android.view.View) 2159 * @see #setContentView(int) 2160 */ 2161 public void setContentView(View view, ViewGroup.LayoutParams params) { 2162 getWindow().setContentView(view, params); 2163 initWindowDecorActionBar(); 2164 } 2165 2166 /** 2167 * Add an additional content view to the activity. Added after any existing 2168 * ones in the activity -- existing views are NOT removed. 2169 * 2170 * @param view The desired content to display. 2171 * @param params Layout parameters for the view. 2172 */ 2173 public void addContentView(View view, ViewGroup.LayoutParams params) { 2174 getWindow().addContentView(view, params); 2175 initWindowDecorActionBar(); 2176 } 2177 2178 /** 2179 * Retrieve the {@link TransitionManager} responsible for default transitions in this window. 2180 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2181 * 2182 * <p>This method will return non-null after content has been initialized (e.g. by using 2183 * {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.</p> 2184 * 2185 * @return This window's content TransitionManager or null if none is set. 2186 */ 2187 public TransitionManager getContentTransitionManager() { 2188 return getWindow().getTransitionManager(); 2189 } 2190 2191 /** 2192 * Set the {@link TransitionManager} to use for default transitions in this window. 2193 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2194 * 2195 * @param tm The TransitionManager to use for scene changes. 2196 */ 2197 public void setContentTransitionManager(TransitionManager tm) { 2198 getWindow().setTransitionManager(tm); 2199 } 2200 2201 /** 2202 * Retrieve the {@link Scene} representing this window's current content. 2203 * Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 2204 * 2205 * <p>This method will return null if the current content is not represented by a Scene.</p> 2206 * 2207 * @return Current Scene being shown or null 2208 */ 2209 public Scene getContentScene() { 2210 return getWindow().getContentScene(); 2211 } 2212 2213 /** 2214 * Sets whether this activity is finished when touched outside its window's 2215 * bounds. 2216 */ 2217 public void setFinishOnTouchOutside(boolean finish) { 2218 mWindow.setCloseOnTouchOutside(finish); 2219 } 2220 2221 /** @hide */ 2222 @IntDef({ 2223 DEFAULT_KEYS_DISABLE, 2224 DEFAULT_KEYS_DIALER, 2225 DEFAULT_KEYS_SHORTCUT, 2226 DEFAULT_KEYS_SEARCH_LOCAL, 2227 DEFAULT_KEYS_SEARCH_GLOBAL}) 2228 @Retention(RetentionPolicy.SOURCE) 2229 @interface DefaultKeyMode {} 2230 2231 /** 2232 * Use with {@link #setDefaultKeyMode} to turn off default handling of 2233 * keys. 2234 * 2235 * @see #setDefaultKeyMode 2236 */ 2237 static public final int DEFAULT_KEYS_DISABLE = 0; 2238 /** 2239 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 2240 * key handling. 2241 * 2242 * @see #setDefaultKeyMode 2243 */ 2244 static public final int DEFAULT_KEYS_DIALER = 1; 2245 /** 2246 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 2247 * default key handling. 2248 * 2249 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2250 * 2251 * @see #setDefaultKeyMode 2252 */ 2253 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2254 /** 2255 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2256 * will start an application-defined search. (If the application or activity does not 2257 * actually define a search, the the keys will be ignored.) 2258 * 2259 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2260 * 2261 * @see #setDefaultKeyMode 2262 */ 2263 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2264 2265 /** 2266 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2267 * will start a global search (typically web search, but some platforms may define alternate 2268 * methods for global search) 2269 * 2270 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2271 * 2272 * @see #setDefaultKeyMode 2273 */ 2274 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2275 2276 /** 2277 * Select the default key handling for this activity. This controls what 2278 * will happen to key events that are not otherwise handled. The default 2279 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2280 * floor. Other modes allow you to launch the dialer 2281 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2282 * menu without requiring the menu key be held down 2283 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2284 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2285 * 2286 * <p>Note that the mode selected here does not impact the default 2287 * handling of system keys, such as the "back" and "menu" keys, and your 2288 * activity and its views always get a first chance to receive and handle 2289 * all application keys. 2290 * 2291 * @param mode The desired default key mode constant. 2292 * 2293 * @see #DEFAULT_KEYS_DISABLE 2294 * @see #DEFAULT_KEYS_DIALER 2295 * @see #DEFAULT_KEYS_SHORTCUT 2296 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2297 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2298 * @see #onKeyDown 2299 */ 2300 public final void setDefaultKeyMode(@DefaultKeyMode int mode) { 2301 mDefaultKeyMode = mode; 2302 2303 // Some modes use a SpannableStringBuilder to track & dispatch input events 2304 // This list must remain in sync with the switch in onKeyDown() 2305 switch (mode) { 2306 case DEFAULT_KEYS_DISABLE: 2307 case DEFAULT_KEYS_SHORTCUT: 2308 mDefaultKeySsb = null; // not used in these modes 2309 break; 2310 case DEFAULT_KEYS_DIALER: 2311 case DEFAULT_KEYS_SEARCH_LOCAL: 2312 case DEFAULT_KEYS_SEARCH_GLOBAL: 2313 mDefaultKeySsb = new SpannableStringBuilder(); 2314 Selection.setSelection(mDefaultKeySsb,0); 2315 break; 2316 default: 2317 throw new IllegalArgumentException(); 2318 } 2319 } 2320 2321 /** 2322 * Called when a key was pressed down and not handled by any of the views 2323 * inside of the activity. So, for example, key presses while the cursor 2324 * is inside a TextView will not trigger the event (unless it is a navigation 2325 * to another object) because TextView handles its own key presses. 2326 * 2327 * <p>If the focused view didn't want this event, this method is called. 2328 * 2329 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2330 * by calling {@link #onBackPressed()}, though the behavior varies based 2331 * on the application compatibility mode: for 2332 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2333 * it will set up the dispatch to call {@link #onKeyUp} where the action 2334 * will be performed; for earlier applications, it will perform the 2335 * action immediately in on-down, as those versions of the platform 2336 * behaved. 2337 * 2338 * <p>Other additional default key handling may be performed 2339 * if configured with {@link #setDefaultKeyMode}. 2340 * 2341 * @return Return <code>true</code> to prevent this event from being propagated 2342 * further, or <code>false</code> to indicate that you have not handled 2343 * this event and it should continue to be propagated. 2344 * @see #onKeyUp 2345 * @see android.view.KeyEvent 2346 */ 2347 public boolean onKeyDown(int keyCode, KeyEvent event) { 2348 if (keyCode == KeyEvent.KEYCODE_BACK) { 2349 if (getApplicationInfo().targetSdkVersion 2350 >= Build.VERSION_CODES.ECLAIR) { 2351 event.startTracking(); 2352 } else { 2353 onBackPressed(); 2354 } 2355 return true; 2356 } 2357 2358 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2359 return false; 2360 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2361 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2362 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2363 return true; 2364 } 2365 return false; 2366 } else { 2367 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2368 boolean clearSpannable = false; 2369 boolean handled; 2370 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2371 clearSpannable = true; 2372 handled = false; 2373 } else { 2374 handled = TextKeyListener.getInstance().onKeyDown( 2375 null, mDefaultKeySsb, keyCode, event); 2376 if (handled && mDefaultKeySsb.length() > 0) { 2377 // something useable has been typed - dispatch it now. 2378 2379 final String str = mDefaultKeySsb.toString(); 2380 clearSpannable = true; 2381 2382 switch (mDefaultKeyMode) { 2383 case DEFAULT_KEYS_DIALER: 2384 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2385 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2386 startActivity(intent); 2387 break; 2388 case DEFAULT_KEYS_SEARCH_LOCAL: 2389 startSearch(str, false, null, false); 2390 break; 2391 case DEFAULT_KEYS_SEARCH_GLOBAL: 2392 startSearch(str, false, null, true); 2393 break; 2394 } 2395 } 2396 } 2397 if (clearSpannable) { 2398 mDefaultKeySsb.clear(); 2399 mDefaultKeySsb.clearSpans(); 2400 Selection.setSelection(mDefaultKeySsb,0); 2401 } 2402 return handled; 2403 } 2404 } 2405 2406 /** 2407 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2408 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2409 * the event). 2410 */ 2411 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2412 return false; 2413 } 2414 2415 /** 2416 * Called when a key was released and not handled by any of the views 2417 * inside of the activity. So, for example, key presses while the cursor 2418 * is inside a TextView will not trigger the event (unless it is a navigation 2419 * to another object) because TextView handles its own key presses. 2420 * 2421 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2422 * and go back. 2423 * 2424 * @return Return <code>true</code> to prevent this event from being propagated 2425 * further, or <code>false</code> to indicate that you have not handled 2426 * this event and it should continue to be propagated. 2427 * @see #onKeyDown 2428 * @see KeyEvent 2429 */ 2430 public boolean onKeyUp(int keyCode, KeyEvent event) { 2431 if (getApplicationInfo().targetSdkVersion 2432 >= Build.VERSION_CODES.ECLAIR) { 2433 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2434 && !event.isCanceled()) { 2435 onBackPressed(); 2436 return true; 2437 } 2438 } 2439 return false; 2440 } 2441 2442 /** 2443 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2444 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2445 * the event). 2446 */ 2447 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2448 return false; 2449 } 2450 2451 /** 2452 * Called when the activity has detected the user's press of the back 2453 * key. The default implementation simply finishes the current activity, 2454 * but you can override this to do whatever you want. 2455 */ 2456 public void onBackPressed() { 2457 if (mActionBar != null && mActionBar.collapseActionView()) { 2458 return; 2459 } 2460 2461 if (!mFragments.popBackStackImmediate()) { 2462 finishAfterTransition(); 2463 } 2464 } 2465 2466 /** 2467 * Called when a key shortcut event is not handled by any of the views in the Activity. 2468 * Override this method to implement global key shortcuts for the Activity. 2469 * Key shortcuts can also be implemented by setting the 2470 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2471 * 2472 * @param keyCode The value in event.getKeyCode(). 2473 * @param event Description of the key event. 2474 * @return True if the key shortcut was handled. 2475 */ 2476 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2477 return false; 2478 } 2479 2480 /** 2481 * Called when a touch screen event was not handled by any of the views 2482 * under it. This is most useful to process touch events that happen 2483 * outside of your window bounds, where there is no view to receive it. 2484 * 2485 * @param event The touch screen event being processed. 2486 * 2487 * @return Return true if you have consumed the event, false if you haven't. 2488 * The default implementation always returns false. 2489 */ 2490 public boolean onTouchEvent(MotionEvent event) { 2491 if (mWindow.shouldCloseOnTouch(this, event)) { 2492 finish(); 2493 return true; 2494 } 2495 2496 return false; 2497 } 2498 2499 /** 2500 * Called when the trackball was moved and not handled by any of the 2501 * views inside of the activity. So, for example, if the trackball moves 2502 * while focus is on a button, you will receive a call here because 2503 * buttons do not normally do anything with trackball events. The call 2504 * here happens <em>before</em> trackball movements are converted to 2505 * DPAD key events, which then get sent back to the view hierarchy, and 2506 * will be processed at the point for things like focus navigation. 2507 * 2508 * @param event The trackball event being processed. 2509 * 2510 * @return Return true if you have consumed the event, false if you haven't. 2511 * The default implementation always returns false. 2512 */ 2513 public boolean onTrackballEvent(MotionEvent event) { 2514 return false; 2515 } 2516 2517 /** 2518 * Called when a generic motion event was not handled by any of the 2519 * views inside of the activity. 2520 * <p> 2521 * Generic motion events describe joystick movements, mouse hovers, track pad 2522 * touches, scroll wheel movements and other input events. The 2523 * {@link MotionEvent#getSource() source} of the motion event specifies 2524 * the class of input that was received. Implementations of this method 2525 * must examine the bits in the source before processing the event. 2526 * The following code example shows how this is done. 2527 * </p><p> 2528 * Generic motion events with source class 2529 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2530 * are delivered to the view under the pointer. All other generic motion events are 2531 * delivered to the focused view. 2532 * </p><p> 2533 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2534 * handle this event. 2535 * </p> 2536 * 2537 * @param event The generic motion event being processed. 2538 * 2539 * @return Return true if you have consumed the event, false if you haven't. 2540 * The default implementation always returns false. 2541 */ 2542 public boolean onGenericMotionEvent(MotionEvent event) { 2543 return false; 2544 } 2545 2546 /** 2547 * Called whenever a key, touch, or trackball event is dispatched to the 2548 * activity. Implement this method if you wish to know that the user has 2549 * interacted with the device in some way while your activity is running. 2550 * This callback and {@link #onUserLeaveHint} are intended to help 2551 * activities manage status bar notifications intelligently; specifically, 2552 * for helping activities determine the proper time to cancel a notfication. 2553 * 2554 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2555 * be accompanied by calls to {@link #onUserInteraction}. This 2556 * ensures that your activity will be told of relevant user activity such 2557 * as pulling down the notification pane and touching an item there. 2558 * 2559 * <p>Note that this callback will be invoked for the touch down action 2560 * that begins a touch gesture, but may not be invoked for the touch-moved 2561 * and touch-up actions that follow. 2562 * 2563 * @see #onUserLeaveHint() 2564 */ 2565 public void onUserInteraction() { 2566 } 2567 2568 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2569 // Update window manager if: we have a view, that view is 2570 // attached to its parent (which will be a RootView), and 2571 // this activity is not embedded. 2572 if (mParent == null) { 2573 View decor = mDecor; 2574 if (decor != null && decor.getParent() != null) { 2575 getWindowManager().updateViewLayout(decor, params); 2576 } 2577 } 2578 } 2579 2580 public void onContentChanged() { 2581 } 2582 2583 /** 2584 * Called when the current {@link Window} of the activity gains or loses 2585 * focus. This is the best indicator of whether this activity is visible 2586 * to the user. The default implementation clears the key tracking 2587 * state, so should always be called. 2588 * 2589 * <p>Note that this provides information about global focus state, which 2590 * is managed independently of activity lifecycles. As such, while focus 2591 * changes will generally have some relation to lifecycle changes (an 2592 * activity that is stopped will not generally get window focus), you 2593 * should not rely on any particular order between the callbacks here and 2594 * those in the other lifecycle methods such as {@link #onResume}. 2595 * 2596 * <p>As a general rule, however, a resumed activity will have window 2597 * focus... unless it has displayed other dialogs or popups that take 2598 * input focus, in which case the activity itself will not have focus 2599 * when the other windows have it. Likewise, the system may display 2600 * system-level windows (such as the status bar notification panel or 2601 * a system alert) which will temporarily take window input focus without 2602 * pausing the foreground activity. 2603 * 2604 * @param hasFocus Whether the window of this activity has focus. 2605 * 2606 * @see #hasWindowFocus() 2607 * @see #onResume 2608 * @see View#onWindowFocusChanged(boolean) 2609 */ 2610 public void onWindowFocusChanged(boolean hasFocus) { 2611 } 2612 2613 /** 2614 * Called when the main window associated with the activity has been 2615 * attached to the window manager. 2616 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2617 * for more information. 2618 * @see View#onAttachedToWindow 2619 */ 2620 public void onAttachedToWindow() { 2621 } 2622 2623 /** 2624 * Called when the main window associated with the activity has been 2625 * detached from the window manager. 2626 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2627 * for more information. 2628 * @see View#onDetachedFromWindow 2629 */ 2630 public void onDetachedFromWindow() { 2631 } 2632 2633 /** 2634 * Returns true if this activity's <em>main</em> window currently has window focus. 2635 * Note that this is not the same as the view itself having focus. 2636 * 2637 * @return True if this activity's main window currently has window focus. 2638 * 2639 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2640 */ 2641 public boolean hasWindowFocus() { 2642 Window w = getWindow(); 2643 if (w != null) { 2644 View d = w.getDecorView(); 2645 if (d != null) { 2646 return d.hasWindowFocus(); 2647 } 2648 } 2649 return false; 2650 } 2651 2652 /** 2653 * Called when the main window associated with the activity has been dismissed. 2654 * @hide 2655 */ 2656 @Override 2657 public void onWindowDismissed() { 2658 finish(); 2659 } 2660 2661 /** 2662 * Called to process key events. You can override this to intercept all 2663 * key events before they are dispatched to the window. Be sure to call 2664 * this implementation for key events that should be handled normally. 2665 * 2666 * @param event The key event. 2667 * 2668 * @return boolean Return true if this event was consumed. 2669 */ 2670 public boolean dispatchKeyEvent(KeyEvent event) { 2671 onUserInteraction(); 2672 2673 // Let action bars open menus in response to the menu key prioritized over 2674 // the window handling it 2675 if (event.getKeyCode() == KeyEvent.KEYCODE_MENU && 2676 mActionBar != null && mActionBar.onMenuKeyEvent(event)) { 2677 return true; 2678 } 2679 2680 Window win = getWindow(); 2681 if (win.superDispatchKeyEvent(event)) { 2682 return true; 2683 } 2684 View decor = mDecor; 2685 if (decor == null) decor = win.getDecorView(); 2686 return event.dispatch(this, decor != null 2687 ? decor.getKeyDispatcherState() : null, this); 2688 } 2689 2690 /** 2691 * Called to process a key shortcut event. 2692 * You can override this to intercept all key shortcut events before they are 2693 * dispatched to the window. Be sure to call this implementation for key shortcut 2694 * events that should be handled normally. 2695 * 2696 * @param event The key shortcut event. 2697 * @return True if this event was consumed. 2698 */ 2699 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2700 onUserInteraction(); 2701 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2702 return true; 2703 } 2704 return onKeyShortcut(event.getKeyCode(), event); 2705 } 2706 2707 /** 2708 * Called to process touch screen events. You can override this to 2709 * intercept all touch screen events before they are dispatched to the 2710 * window. Be sure to call this implementation for touch screen events 2711 * that should be handled normally. 2712 * 2713 * @param ev The touch screen event. 2714 * 2715 * @return boolean Return true if this event was consumed. 2716 */ 2717 public boolean dispatchTouchEvent(MotionEvent ev) { 2718 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2719 onUserInteraction(); 2720 } 2721 if (getWindow().superDispatchTouchEvent(ev)) { 2722 return true; 2723 } 2724 return onTouchEvent(ev); 2725 } 2726 2727 /** 2728 * Called to process trackball events. You can override this to 2729 * intercept all trackball events before they are dispatched to the 2730 * window. Be sure to call this implementation for trackball events 2731 * that should be handled normally. 2732 * 2733 * @param ev The trackball event. 2734 * 2735 * @return boolean Return true if this event was consumed. 2736 */ 2737 public boolean dispatchTrackballEvent(MotionEvent ev) { 2738 onUserInteraction(); 2739 if (getWindow().superDispatchTrackballEvent(ev)) { 2740 return true; 2741 } 2742 return onTrackballEvent(ev); 2743 } 2744 2745 /** 2746 * Called to process generic motion events. You can override this to 2747 * intercept all generic motion events before they are dispatched to the 2748 * window. Be sure to call this implementation for generic motion events 2749 * that should be handled normally. 2750 * 2751 * @param ev The generic motion event. 2752 * 2753 * @return boolean Return true if this event was consumed. 2754 */ 2755 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2756 onUserInteraction(); 2757 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2758 return true; 2759 } 2760 return onGenericMotionEvent(ev); 2761 } 2762 2763 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2764 event.setClassName(getClass().getName()); 2765 event.setPackageName(getPackageName()); 2766 2767 LayoutParams params = getWindow().getAttributes(); 2768 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2769 (params.height == LayoutParams.MATCH_PARENT); 2770 event.setFullScreen(isFullScreen); 2771 2772 CharSequence title = getTitle(); 2773 if (!TextUtils.isEmpty(title)) { 2774 event.getText().add(title); 2775 } 2776 2777 return true; 2778 } 2779 2780 /** 2781 * Default implementation of 2782 * {@link android.view.Window.Callback#onCreatePanelView} 2783 * for activities. This 2784 * simply returns null so that all panel sub-windows will have the default 2785 * menu behavior. 2786 */ 2787 @Nullable 2788 public View onCreatePanelView(int featureId) { 2789 return null; 2790 } 2791 2792 /** 2793 * Default implementation of 2794 * {@link android.view.Window.Callback#onCreatePanelMenu} 2795 * for activities. This calls through to the new 2796 * {@link #onCreateOptionsMenu} method for the 2797 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2798 * so that subclasses of Activity don't need to deal with feature codes. 2799 */ 2800 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2801 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2802 boolean show = onCreateOptionsMenu(menu); 2803 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2804 return show; 2805 } 2806 return false; 2807 } 2808 2809 /** 2810 * Default implementation of 2811 * {@link android.view.Window.Callback#onPreparePanel} 2812 * for activities. This 2813 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2814 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2815 * panel, so that subclasses of 2816 * Activity don't need to deal with feature codes. 2817 */ 2818 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2819 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2820 boolean goforit = onPrepareOptionsMenu(menu); 2821 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2822 return goforit; 2823 } 2824 return true; 2825 } 2826 2827 /** 2828 * {@inheritDoc} 2829 * 2830 * @return The default implementation returns true. 2831 */ 2832 public boolean onMenuOpened(int featureId, Menu menu) { 2833 if (featureId == Window.FEATURE_ACTION_BAR) { 2834 initWindowDecorActionBar(); 2835 if (mActionBar != null) { 2836 mActionBar.dispatchMenuVisibilityChanged(true); 2837 } else { 2838 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2839 } 2840 } 2841 return true; 2842 } 2843 2844 /** 2845 * Default implementation of 2846 * {@link android.view.Window.Callback#onMenuItemSelected} 2847 * for activities. This calls through to the new 2848 * {@link #onOptionsItemSelected} method for the 2849 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2850 * panel, so that subclasses of 2851 * Activity don't need to deal with feature codes. 2852 */ 2853 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2854 CharSequence titleCondensed = item.getTitleCondensed(); 2855 2856 switch (featureId) { 2857 case Window.FEATURE_OPTIONS_PANEL: 2858 // Put event logging here so it gets called even if subclass 2859 // doesn't call through to superclass's implmeentation of each 2860 // of these methods below 2861 if(titleCondensed != null) { 2862 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 2863 } 2864 if (onOptionsItemSelected(item)) { 2865 return true; 2866 } 2867 if (mFragments.dispatchOptionsItemSelected(item)) { 2868 return true; 2869 } 2870 if (item.getItemId() == android.R.id.home && mActionBar != null && 2871 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 2872 if (mParent == null) { 2873 return onNavigateUp(); 2874 } else { 2875 return mParent.onNavigateUpFromChild(this); 2876 } 2877 } 2878 return false; 2879 2880 case Window.FEATURE_CONTEXT_MENU: 2881 if(titleCondensed != null) { 2882 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 2883 } 2884 if (onContextItemSelected(item)) { 2885 return true; 2886 } 2887 return mFragments.dispatchContextItemSelected(item); 2888 2889 default: 2890 return false; 2891 } 2892 } 2893 2894 /** 2895 * Default implementation of 2896 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2897 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2898 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2899 * so that subclasses of Activity don't need to deal with feature codes. 2900 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2901 * {@link #onContextMenuClosed(Menu)} will be called. 2902 */ 2903 public void onPanelClosed(int featureId, Menu menu) { 2904 switch (featureId) { 2905 case Window.FEATURE_OPTIONS_PANEL: 2906 mFragments.dispatchOptionsMenuClosed(menu); 2907 onOptionsMenuClosed(menu); 2908 break; 2909 2910 case Window.FEATURE_CONTEXT_MENU: 2911 onContextMenuClosed(menu); 2912 break; 2913 2914 case Window.FEATURE_ACTION_BAR: 2915 initWindowDecorActionBar(); 2916 mActionBar.dispatchMenuVisibilityChanged(false); 2917 break; 2918 } 2919 } 2920 2921 /** 2922 * Declare that the options menu has changed, so should be recreated. 2923 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2924 * time it needs to be displayed. 2925 */ 2926 public void invalidateOptionsMenu() { 2927 if (mActionBar == null || !mActionBar.invalidateOptionsMenu()) { 2928 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2929 } 2930 } 2931 2932 /** 2933 * Initialize the contents of the Activity's standard options menu. You 2934 * should place your menu items in to <var>menu</var>. 2935 * 2936 * <p>This is only called once, the first time the options menu is 2937 * displayed. To update the menu every time it is displayed, see 2938 * {@link #onPrepareOptionsMenu}. 2939 * 2940 * <p>The default implementation populates the menu with standard system 2941 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2942 * they will be correctly ordered with application-defined menu items. 2943 * Deriving classes should always call through to the base implementation. 2944 * 2945 * <p>You can safely hold on to <var>menu</var> (and any items created 2946 * from it), making modifications to it as desired, until the next 2947 * time onCreateOptionsMenu() is called. 2948 * 2949 * <p>When you add items to the menu, you can implement the Activity's 2950 * {@link #onOptionsItemSelected} method to handle them there. 2951 * 2952 * @param menu The options menu in which you place your items. 2953 * 2954 * @return You must return true for the menu to be displayed; 2955 * if you return false it will not be shown. 2956 * 2957 * @see #onPrepareOptionsMenu 2958 * @see #onOptionsItemSelected 2959 */ 2960 public boolean onCreateOptionsMenu(Menu menu) { 2961 if (mParent != null) { 2962 return mParent.onCreateOptionsMenu(menu); 2963 } 2964 return true; 2965 } 2966 2967 /** 2968 * Prepare the Screen's standard options menu to be displayed. This is 2969 * called right before the menu is shown, every time it is shown. You can 2970 * use this method to efficiently enable/disable items or otherwise 2971 * dynamically modify the contents. 2972 * 2973 * <p>The default implementation updates the system menu items based on the 2974 * activity's state. Deriving classes should always call through to the 2975 * base class implementation. 2976 * 2977 * @param menu The options menu as last shown or first initialized by 2978 * onCreateOptionsMenu(). 2979 * 2980 * @return You must return true for the menu to be displayed; 2981 * if you return false it will not be shown. 2982 * 2983 * @see #onCreateOptionsMenu 2984 */ 2985 public boolean onPrepareOptionsMenu(Menu menu) { 2986 if (mParent != null) { 2987 return mParent.onPrepareOptionsMenu(menu); 2988 } 2989 return true; 2990 } 2991 2992 /** 2993 * This hook is called whenever an item in your options menu is selected. 2994 * The default implementation simply returns false to have the normal 2995 * processing happen (calling the item's Runnable or sending a message to 2996 * its Handler as appropriate). You can use this method for any items 2997 * for which you would like to do processing without those other 2998 * facilities. 2999 * 3000 * <p>Derived classes should call through to the base class for it to 3001 * perform the default menu handling.</p> 3002 * 3003 * @param item The menu item that was selected. 3004 * 3005 * @return boolean Return false to allow normal menu processing to 3006 * proceed, true to consume it here. 3007 * 3008 * @see #onCreateOptionsMenu 3009 */ 3010 public boolean onOptionsItemSelected(MenuItem item) { 3011 if (mParent != null) { 3012 return mParent.onOptionsItemSelected(item); 3013 } 3014 return false; 3015 } 3016 3017 /** 3018 * This method is called whenever the user chooses to navigate Up within your application's 3019 * activity hierarchy from the action bar. 3020 * 3021 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 3022 * was specified in the manifest for this activity or an activity-alias to it, 3023 * default Up navigation will be handled automatically. If any activity 3024 * along the parent chain requires extra Intent arguments, the Activity subclass 3025 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 3026 * to supply those arguments.</p> 3027 * 3028 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 3029 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 3030 * from the design guide for more information about navigating within your app.</p> 3031 * 3032 * <p>See the {@link TaskStackBuilder} class and the Activity methods 3033 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 3034 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 3035 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 3036 * 3037 * @return true if Up navigation completed successfully and this Activity was finished, 3038 * false otherwise. 3039 */ 3040 public boolean onNavigateUp() { 3041 // Automatically handle hierarchical Up navigation if the proper 3042 // metadata is available. 3043 Intent upIntent = getParentActivityIntent(); 3044 if (upIntent != null) { 3045 if (mActivityInfo.taskAffinity == null) { 3046 // Activities with a null affinity are special; they really shouldn't 3047 // specify a parent activity intent in the first place. Just finish 3048 // the current activity and call it a day. 3049 finish(); 3050 } else if (shouldUpRecreateTask(upIntent)) { 3051 TaskStackBuilder b = TaskStackBuilder.create(this); 3052 onCreateNavigateUpTaskStack(b); 3053 onPrepareNavigateUpTaskStack(b); 3054 b.startActivities(); 3055 3056 // We can't finishAffinity if we have a result. 3057 // Fall back and simply finish the current activity instead. 3058 if (mResultCode != RESULT_CANCELED || mResultData != null) { 3059 // Tell the developer what's going on to avoid hair-pulling. 3060 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 3061 finish(); 3062 } else { 3063 finishAffinity(); 3064 } 3065 } else { 3066 navigateUpTo(upIntent); 3067 } 3068 return true; 3069 } 3070 return false; 3071 } 3072 3073 /** 3074 * This is called when a child activity of this one attempts to navigate up. 3075 * The default implementation simply calls onNavigateUp() on this activity (the parent). 3076 * 3077 * @param child The activity making the call. 3078 */ 3079 public boolean onNavigateUpFromChild(Activity child) { 3080 return onNavigateUp(); 3081 } 3082 3083 /** 3084 * Define the synthetic task stack that will be generated during Up navigation from 3085 * a different task. 3086 * 3087 * <p>The default implementation of this method adds the parent chain of this activity 3088 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 3089 * may choose to override this method to construct the desired task stack in a different 3090 * way.</p> 3091 * 3092 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 3093 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 3094 * returned by {@link #getParentActivityIntent()}.</p> 3095 * 3096 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 3097 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 3098 * 3099 * @param builder An empty TaskStackBuilder - the application should add intents representing 3100 * the desired task stack 3101 */ 3102 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 3103 builder.addParentStack(this); 3104 } 3105 3106 /** 3107 * Prepare the synthetic task stack that will be generated during Up navigation 3108 * from a different task. 3109 * 3110 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 3111 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 3112 * If any extra data should be added to these intents before launching the new task, 3113 * the application should override this method and add that data here.</p> 3114 * 3115 * @param builder A TaskStackBuilder that has been populated with Intents by 3116 * onCreateNavigateUpTaskStack. 3117 */ 3118 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 3119 } 3120 3121 /** 3122 * This hook is called whenever the options menu is being closed (either by the user canceling 3123 * the menu with the back/menu button, or when an item is selected). 3124 * 3125 * @param menu The options menu as last shown or first initialized by 3126 * onCreateOptionsMenu(). 3127 */ 3128 public void onOptionsMenuClosed(Menu menu) { 3129 if (mParent != null) { 3130 mParent.onOptionsMenuClosed(menu); 3131 } 3132 } 3133 3134 /** 3135 * Programmatically opens the options menu. If the options menu is already 3136 * open, this method does nothing. 3137 */ 3138 public void openOptionsMenu() { 3139 if (mActionBar == null || !mActionBar.openOptionsMenu()) { 3140 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 3141 } 3142 } 3143 3144 /** 3145 * Progammatically closes the options menu. If the options menu is already 3146 * closed, this method does nothing. 3147 */ 3148 public void closeOptionsMenu() { 3149 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 3150 } 3151 3152 /** 3153 * Called when a context menu for the {@code view} is about to be shown. 3154 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 3155 * time the context menu is about to be shown and should be populated for 3156 * the view (or item inside the view for {@link AdapterView} subclasses, 3157 * this can be found in the {@code menuInfo})). 3158 * <p> 3159 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 3160 * item has been selected. 3161 * <p> 3162 * It is not safe to hold onto the context menu after this method returns. 3163 * 3164 */ 3165 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 3166 } 3167 3168 /** 3169 * Registers a context menu to be shown for the given view (multiple views 3170 * can show the context menu). This method will set the 3171 * {@link OnCreateContextMenuListener} on the view to this activity, so 3172 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 3173 * called when it is time to show the context menu. 3174 * 3175 * @see #unregisterForContextMenu(View) 3176 * @param view The view that should show a context menu. 3177 */ 3178 public void registerForContextMenu(View view) { 3179 view.setOnCreateContextMenuListener(this); 3180 } 3181 3182 /** 3183 * Prevents a context menu to be shown for the given view. This method will remove the 3184 * {@link OnCreateContextMenuListener} on the view. 3185 * 3186 * @see #registerForContextMenu(View) 3187 * @param view The view that should stop showing a context menu. 3188 */ 3189 public void unregisterForContextMenu(View view) { 3190 view.setOnCreateContextMenuListener(null); 3191 } 3192 3193 /** 3194 * Programmatically opens the context menu for a particular {@code view}. 3195 * The {@code view} should have been added via 3196 * {@link #registerForContextMenu(View)}. 3197 * 3198 * @param view The view to show the context menu for. 3199 */ 3200 public void openContextMenu(View view) { 3201 view.showContextMenu(); 3202 } 3203 3204 /** 3205 * Programmatically closes the most recently opened context menu, if showing. 3206 */ 3207 public void closeContextMenu() { 3208 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 3209 } 3210 3211 /** 3212 * This hook is called whenever an item in a context menu is selected. The 3213 * default implementation simply returns false to have the normal processing 3214 * happen (calling the item's Runnable or sending a message to its Handler 3215 * as appropriate). You can use this method for any items for which you 3216 * would like to do processing without those other facilities. 3217 * <p> 3218 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 3219 * View that added this menu item. 3220 * <p> 3221 * Derived classes should call through to the base class for it to perform 3222 * the default menu handling. 3223 * 3224 * @param item The context menu item that was selected. 3225 * @return boolean Return false to allow normal context menu processing to 3226 * proceed, true to consume it here. 3227 */ 3228 public boolean onContextItemSelected(MenuItem item) { 3229 if (mParent != null) { 3230 return mParent.onContextItemSelected(item); 3231 } 3232 return false; 3233 } 3234 3235 /** 3236 * This hook is called whenever the context menu is being closed (either by 3237 * the user canceling the menu with the back/menu button, or when an item is 3238 * selected). 3239 * 3240 * @param menu The context menu that is being closed. 3241 */ 3242 public void onContextMenuClosed(Menu menu) { 3243 if (mParent != null) { 3244 mParent.onContextMenuClosed(menu); 3245 } 3246 } 3247 3248 /** 3249 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 3250 */ 3251 @Deprecated 3252 protected Dialog onCreateDialog(int id) { 3253 return null; 3254 } 3255 3256 /** 3257 * Callback for creating dialogs that are managed (saved and restored) for you 3258 * by the activity. The default implementation calls through to 3259 * {@link #onCreateDialog(int)} for compatibility. 3260 * 3261 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3262 * or later, consider instead using a {@link DialogFragment} instead.</em> 3263 * 3264 * <p>If you use {@link #showDialog(int)}, the activity will call through to 3265 * this method the first time, and hang onto it thereafter. Any dialog 3266 * that is created by this method will automatically be saved and restored 3267 * for you, including whether it is showing. 3268 * 3269 * <p>If you would like the activity to manage saving and restoring dialogs 3270 * for you, you should override this method and handle any ids that are 3271 * passed to {@link #showDialog}. 3272 * 3273 * <p>If you would like an opportunity to prepare your dialog before it is shown, 3274 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3275 * 3276 * @param id The id of the dialog. 3277 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3278 * @return The dialog. If you return null, the dialog will not be created. 3279 * 3280 * @see #onPrepareDialog(int, Dialog, Bundle) 3281 * @see #showDialog(int, Bundle) 3282 * @see #dismissDialog(int) 3283 * @see #removeDialog(int) 3284 * 3285 * @deprecated Use the new {@link DialogFragment} class with 3286 * {@link FragmentManager} instead; this is also 3287 * available on older platforms through the Android compatibility package. 3288 */ 3289 @Nullable 3290 @Deprecated 3291 protected Dialog onCreateDialog(int id, Bundle args) { 3292 return onCreateDialog(id); 3293 } 3294 3295 /** 3296 * @deprecated Old no-arguments version of 3297 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3298 */ 3299 @Deprecated 3300 protected void onPrepareDialog(int id, Dialog dialog) { 3301 dialog.setOwnerActivity(this); 3302 } 3303 3304 /** 3305 * Provides an opportunity to prepare a managed dialog before it is being 3306 * shown. The default implementation calls through to 3307 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3308 * 3309 * <p> 3310 * Override this if you need to update a managed dialog based on the state 3311 * of the application each time it is shown. For example, a time picker 3312 * dialog might want to be updated with the current time. You should call 3313 * through to the superclass's implementation. The default implementation 3314 * will set this Activity as the owner activity on the Dialog. 3315 * 3316 * @param id The id of the managed dialog. 3317 * @param dialog The dialog. 3318 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3319 * @see #onCreateDialog(int, Bundle) 3320 * @see #showDialog(int) 3321 * @see #dismissDialog(int) 3322 * @see #removeDialog(int) 3323 * 3324 * @deprecated Use the new {@link DialogFragment} class with 3325 * {@link FragmentManager} instead; this is also 3326 * available on older platforms through the Android compatibility package. 3327 */ 3328 @Deprecated 3329 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3330 onPrepareDialog(id, dialog); 3331 } 3332 3333 /** 3334 * Simple version of {@link #showDialog(int, Bundle)} that does not 3335 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3336 * with null arguments. 3337 * 3338 * @deprecated Use the new {@link DialogFragment} class with 3339 * {@link FragmentManager} instead; this is also 3340 * available on older platforms through the Android compatibility package. 3341 */ 3342 @Deprecated 3343 public final void showDialog(int id) { 3344 showDialog(id, null); 3345 } 3346 3347 /** 3348 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3349 * will be made with the same id the first time this is called for a given 3350 * id. From thereafter, the dialog will be automatically saved and restored. 3351 * 3352 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3353 * or later, consider instead using a {@link DialogFragment} instead.</em> 3354 * 3355 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3356 * be made to provide an opportunity to do any timely preparation. 3357 * 3358 * @param id The id of the managed dialog. 3359 * @param args Arguments to pass through to the dialog. These will be saved 3360 * and restored for you. Note that if the dialog is already created, 3361 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3362 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3363 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3364 * @return Returns true if the Dialog was created; false is returned if 3365 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3366 * 3367 * @see Dialog 3368 * @see #onCreateDialog(int, Bundle) 3369 * @see #onPrepareDialog(int, Dialog, Bundle) 3370 * @see #dismissDialog(int) 3371 * @see #removeDialog(int) 3372 * 3373 * @deprecated Use the new {@link DialogFragment} class with 3374 * {@link FragmentManager} instead; this is also 3375 * available on older platforms through the Android compatibility package. 3376 */ 3377 @Nullable 3378 @Deprecated 3379 public final boolean showDialog(int id, Bundle args) { 3380 if (mManagedDialogs == null) { 3381 mManagedDialogs = new SparseArray<ManagedDialog>(); 3382 } 3383 ManagedDialog md = mManagedDialogs.get(id); 3384 if (md == null) { 3385 md = new ManagedDialog(); 3386 md.mDialog = createDialog(id, null, args); 3387 if (md.mDialog == null) { 3388 return false; 3389 } 3390 mManagedDialogs.put(id, md); 3391 } 3392 3393 md.mArgs = args; 3394 onPrepareDialog(id, md.mDialog, args); 3395 md.mDialog.show(); 3396 return true; 3397 } 3398 3399 /** 3400 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3401 * 3402 * @param id The id of the managed dialog. 3403 * 3404 * @throws IllegalArgumentException if the id was not previously shown via 3405 * {@link #showDialog(int)}. 3406 * 3407 * @see #onCreateDialog(int, Bundle) 3408 * @see #onPrepareDialog(int, Dialog, Bundle) 3409 * @see #showDialog(int) 3410 * @see #removeDialog(int) 3411 * 3412 * @deprecated Use the new {@link DialogFragment} class with 3413 * {@link FragmentManager} instead; this is also 3414 * available on older platforms through the Android compatibility package. 3415 */ 3416 @Deprecated 3417 public final void dismissDialog(int id) { 3418 if (mManagedDialogs == null) { 3419 throw missingDialog(id); 3420 } 3421 3422 final ManagedDialog md = mManagedDialogs.get(id); 3423 if (md == null) { 3424 throw missingDialog(id); 3425 } 3426 md.mDialog.dismiss(); 3427 } 3428 3429 /** 3430 * Creates an exception to throw if a user passed in a dialog id that is 3431 * unexpected. 3432 */ 3433 private IllegalArgumentException missingDialog(int id) { 3434 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3435 + "shown via Activity#showDialog"); 3436 } 3437 3438 /** 3439 * Removes any internal references to a dialog managed by this Activity. 3440 * If the dialog is showing, it will dismiss it as part of the clean up. 3441 * 3442 * <p>This can be useful if you know that you will never show a dialog again and 3443 * want to avoid the overhead of saving and restoring it in the future. 3444 * 3445 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3446 * will not throw an exception if you try to remove an ID that does not 3447 * currently have an associated dialog.</p> 3448 * 3449 * @param id The id of the managed dialog. 3450 * 3451 * @see #onCreateDialog(int, Bundle) 3452 * @see #onPrepareDialog(int, Dialog, Bundle) 3453 * @see #showDialog(int) 3454 * @see #dismissDialog(int) 3455 * 3456 * @deprecated Use the new {@link DialogFragment} class with 3457 * {@link FragmentManager} instead; this is also 3458 * available on older platforms through the Android compatibility package. 3459 */ 3460 @Deprecated 3461 public final void removeDialog(int id) { 3462 if (mManagedDialogs != null) { 3463 final ManagedDialog md = mManagedDialogs.get(id); 3464 if (md != null) { 3465 md.mDialog.dismiss(); 3466 mManagedDialogs.remove(id); 3467 } 3468 } 3469 } 3470 3471 /** 3472 * This hook is called when the user signals the desire to start a search. 3473 * 3474 * <p>You can use this function as a simple way to launch the search UI, in response to a 3475 * menu item, search button, or other widgets within your activity. Unless overidden, 3476 * calling this function is the same as calling 3477 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3478 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3479 * 3480 * <p>You can override this function to force global search, e.g. in response to a dedicated 3481 * search key, or to block search entirely (by simply returning false). 3482 * 3483 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 3484 * The default implementation always returns {@code true}. 3485 * 3486 * @see android.app.SearchManager 3487 */ 3488 public boolean onSearchRequested() { 3489 startSearch(null, false, null, false); 3490 return true; 3491 } 3492 3493 /** 3494 * This hook is called to launch the search UI. 3495 * 3496 * <p>It is typically called from onSearchRequested(), either directly from 3497 * Activity.onSearchRequested() or from an overridden version in any given 3498 * Activity. If your goal is simply to activate search, it is preferred to call 3499 * onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal 3500 * is to inject specific data such as context data, it is preferred to <i>override</i> 3501 * onSearchRequested(), so that any callers to it will benefit from the override. 3502 * 3503 * @param initialQuery Any non-null non-empty string will be inserted as 3504 * pre-entered text in the search query box. 3505 * @param selectInitialQuery If true, the initial query will be preselected, which means that 3506 * any further typing will replace it. This is useful for cases where an entire pre-formed 3507 * query is being inserted. If false, the selection point will be placed at the end of the 3508 * inserted query. This is useful when the inserted query is text that the user entered, 3509 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3510 * if initialQuery is a non-empty string.</i> 3511 * @param appSearchData An application can insert application-specific 3512 * context here, in order to improve quality or specificity of its own 3513 * searches. This data will be returned with SEARCH intent(s). Null if 3514 * no extra data is required. 3515 * @param globalSearch If false, this will only launch the search that has been specifically 3516 * defined by the application (which is usually defined as a local search). If no default 3517 * search is defined in the current application or activity, global search will be launched. 3518 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3519 * 3520 * @see android.app.SearchManager 3521 * @see #onSearchRequested 3522 */ 3523 public void startSearch(@Nullable String initialQuery, boolean selectInitialQuery, 3524 @Nullable Bundle appSearchData, boolean globalSearch) { 3525 ensureSearchManager(); 3526 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3527 appSearchData, globalSearch); 3528 } 3529 3530 /** 3531 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3532 * the search dialog. Made available for testing purposes. 3533 * 3534 * @param query The query to trigger. If empty, the request will be ignored. 3535 * @param appSearchData An application can insert application-specific 3536 * context here, in order to improve quality or specificity of its own 3537 * searches. This data will be returned with SEARCH intent(s). Null if 3538 * no extra data is required. 3539 */ 3540 public void triggerSearch(String query, @Nullable Bundle appSearchData) { 3541 ensureSearchManager(); 3542 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3543 } 3544 3545 /** 3546 * Request that key events come to this activity. Use this if your 3547 * activity has no views with focus, but the activity still wants 3548 * a chance to process key events. 3549 * 3550 * @see android.view.Window#takeKeyEvents 3551 */ 3552 public void takeKeyEvents(boolean get) { 3553 getWindow().takeKeyEvents(get); 3554 } 3555 3556 /** 3557 * Enable extended window features. This is a convenience for calling 3558 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3559 * 3560 * @param featureId The desired feature as defined in 3561 * {@link android.view.Window}. 3562 * @return Returns true if the requested feature is supported and now 3563 * enabled. 3564 * 3565 * @see android.view.Window#requestFeature 3566 */ 3567 public final boolean requestWindowFeature(int featureId) { 3568 return getWindow().requestFeature(featureId); 3569 } 3570 3571 /** 3572 * Convenience for calling 3573 * {@link android.view.Window#setFeatureDrawableResource}. 3574 */ 3575 public final void setFeatureDrawableResource(int featureId, int resId) { 3576 getWindow().setFeatureDrawableResource(featureId, resId); 3577 } 3578 3579 /** 3580 * Convenience for calling 3581 * {@link android.view.Window#setFeatureDrawableUri}. 3582 */ 3583 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3584 getWindow().setFeatureDrawableUri(featureId, uri); 3585 } 3586 3587 /** 3588 * Convenience for calling 3589 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3590 */ 3591 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3592 getWindow().setFeatureDrawable(featureId, drawable); 3593 } 3594 3595 /** 3596 * Convenience for calling 3597 * {@link android.view.Window#setFeatureDrawableAlpha}. 3598 */ 3599 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3600 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3601 } 3602 3603 /** 3604 * Convenience for calling 3605 * {@link android.view.Window#getLayoutInflater}. 3606 */ 3607 @NonNull 3608 public LayoutInflater getLayoutInflater() { 3609 return getWindow().getLayoutInflater(); 3610 } 3611 3612 /** 3613 * Returns a {@link MenuInflater} with this context. 3614 */ 3615 @NonNull 3616 public MenuInflater getMenuInflater() { 3617 // Make sure that action views can get an appropriate theme. 3618 if (mMenuInflater == null) { 3619 initWindowDecorActionBar(); 3620 if (mActionBar != null) { 3621 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3622 } else { 3623 mMenuInflater = new MenuInflater(this); 3624 } 3625 } 3626 return mMenuInflater; 3627 } 3628 3629 @Override 3630 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3631 boolean first) { 3632 if (mParent == null) { 3633 super.onApplyThemeResource(theme, resid, first); 3634 } else { 3635 try { 3636 theme.setTo(mParent.getTheme()); 3637 } catch (Exception e) { 3638 // Empty 3639 } 3640 theme.applyStyle(resid, false); 3641 } 3642 3643 // Get the primary color and update the TaskDescription for this activity 3644 if (theme != null) { 3645 TypedArray a = theme.obtainStyledAttributes(com.android.internal.R.styleable.Theme); 3646 int colorPrimary = a.getColor(com.android.internal.R.styleable.Theme_colorPrimary, 0); 3647 a.recycle(); 3648 if (colorPrimary != 0) { 3649 ActivityManager.TaskDescription v = new ActivityManager.TaskDescription(null, null, 3650 colorPrimary); 3651 setTaskDescription(v); 3652 } 3653 } 3654 } 3655 3656 /** 3657 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 3658 * with no options. 3659 * 3660 * @param intent The intent to start. 3661 * @param requestCode If >= 0, this code will be returned in 3662 * onActivityResult() when the activity exits. 3663 * 3664 * @throws android.content.ActivityNotFoundException 3665 * 3666 * @see #startActivity 3667 */ 3668 public void startActivityForResult(Intent intent, int requestCode) { 3669 Bundle options = null; 3670 if (mWindow.hasFeature(Window.FEATURE_CONTENT_TRANSITIONS)) { 3671 options = ActivityOptions.makeSceneTransitionAnimation(this).toBundle(); 3672 } 3673 startActivityForResult(intent, requestCode, options); 3674 } 3675 3676 /** 3677 * Launch an activity for which you would like a result when it finished. 3678 * When this activity exits, your 3679 * onActivityResult() method will be called with the given requestCode. 3680 * Using a negative requestCode is the same as calling 3681 * {@link #startActivity} (the activity is not launched as a sub-activity). 3682 * 3683 * <p>Note that this method should only be used with Intent protocols 3684 * that are defined to return a result. In other protocols (such as 3685 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3686 * not get the result when you expect. For example, if the activity you 3687 * are launching uses the singleTask launch mode, it will not run in your 3688 * task and thus you will immediately receive a cancel result. 3689 * 3690 * <p>As a special case, if you call startActivityForResult() with a requestCode 3691 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3692 * activity, then your window will not be displayed until a result is 3693 * returned back from the started activity. This is to avoid visible 3694 * flickering when redirecting to another activity. 3695 * 3696 * <p>This method throws {@link android.content.ActivityNotFoundException} 3697 * if there was no Activity found to run the given Intent. 3698 * 3699 * @param intent The intent to start. 3700 * @param requestCode If >= 0, this code will be returned in 3701 * onActivityResult() when the activity exits. 3702 * @param options Additional options for how the Activity should be started. 3703 * See {@link android.content.Context#startActivity(Intent, Bundle) 3704 * Context.startActivity(Intent, Bundle)} for more details. 3705 * 3706 * @throws android.content.ActivityNotFoundException 3707 * 3708 * @see #startActivity 3709 */ 3710 public void startActivityForResult(Intent intent, int requestCode, @Nullable Bundle options) { 3711 if (options != null) { 3712 mActivityTransitionState.startExitOutTransition(this, options); 3713 } 3714 if (mParent == null) { 3715 Instrumentation.ActivityResult ar = 3716 mInstrumentation.execStartActivity( 3717 this, mMainThread.getApplicationThread(), mToken, this, 3718 intent, requestCode, options); 3719 if (ar != null) { 3720 mMainThread.sendActivityResult( 3721 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3722 ar.getResultData()); 3723 } 3724 if (requestCode >= 0) { 3725 // If this start is requesting a result, we can avoid making 3726 // the activity visible until the result is received. Setting 3727 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3728 // activity hidden during this time, to avoid flickering. 3729 // This can only be done when a result is requested because 3730 // that guarantees we will get information back when the 3731 // activity is finished, no matter what happens to it. 3732 mStartedActivity = true; 3733 } 3734 3735 final View decor = mWindow != null ? mWindow.peekDecorView() : null; 3736 if (decor != null) { 3737 decor.cancelPendingInputEvents(); 3738 } 3739 // TODO Consider clearing/flushing other event sources and events for child windows. 3740 } else { 3741 if (options != null) { 3742 mParent.startActivityFromChild(this, intent, requestCode, options); 3743 } else { 3744 // Note we want to go through this method for compatibility with 3745 // existing applications that may have overridden it. 3746 mParent.startActivityFromChild(this, intent, requestCode); 3747 } 3748 } 3749 } 3750 3751 /** 3752 * @hide Implement to provide correct calling token. 3753 */ 3754 public void startActivityAsUser(Intent intent, UserHandle user) { 3755 startActivityAsUser(intent, null, user); 3756 } 3757 3758 /** 3759 * @hide Implement to provide correct calling token. 3760 */ 3761 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 3762 if (mParent != null) { 3763 throw new RuntimeException("Called be called from a child"); 3764 } 3765 Instrumentation.ActivityResult ar = 3766 mInstrumentation.execStartActivity( 3767 this, mMainThread.getApplicationThread(), mToken, this, 3768 intent, -1, options, user); 3769 if (ar != null) { 3770 mMainThread.sendActivityResult( 3771 mToken, mEmbeddedID, -1, ar.getResultCode(), 3772 ar.getResultData()); 3773 } 3774 } 3775 3776 /** 3777 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 3778 * Intent, int, int, int, Bundle)} with no options. 3779 * 3780 * @param intent The IntentSender to launch. 3781 * @param requestCode If >= 0, this code will be returned in 3782 * onActivityResult() when the activity exits. 3783 * @param fillInIntent If non-null, this will be provided as the 3784 * intent parameter to {@link IntentSender#sendIntent}. 3785 * @param flagsMask Intent flags in the original IntentSender that you 3786 * would like to change. 3787 * @param flagsValues Desired values for any bits set in 3788 * <var>flagsMask</var> 3789 * @param extraFlags Always set to 0. 3790 */ 3791 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3792 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3793 throws IntentSender.SendIntentException { 3794 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 3795 flagsValues, extraFlags, null); 3796 } 3797 3798 /** 3799 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3800 * to use a IntentSender to describe the activity to be started. If 3801 * the IntentSender is for an activity, that activity will be started 3802 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3803 * here; otherwise, its associated action will be executed (such as 3804 * sending a broadcast) as if you had called 3805 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3806 * 3807 * @param intent The IntentSender to launch. 3808 * @param requestCode If >= 0, this code will be returned in 3809 * onActivityResult() when the activity exits. 3810 * @param fillInIntent If non-null, this will be provided as the 3811 * intent parameter to {@link IntentSender#sendIntent}. 3812 * @param flagsMask Intent flags in the original IntentSender that you 3813 * would like to change. 3814 * @param flagsValues Desired values for any bits set in 3815 * <var>flagsMask</var> 3816 * @param extraFlags Always set to 0. 3817 * @param options Additional options for how the Activity should be started. 3818 * See {@link android.content.Context#startActivity(Intent, Bundle) 3819 * Context.startActivity(Intent, Bundle)} for more details. If options 3820 * have also been supplied by the IntentSender, options given here will 3821 * override any that conflict with those given by the IntentSender. 3822 */ 3823 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3824 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3825 Bundle options) throws IntentSender.SendIntentException { 3826 if (mParent == null) { 3827 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3828 flagsMask, flagsValues, this, options); 3829 } else if (options != null) { 3830 mParent.startIntentSenderFromChild(this, intent, requestCode, 3831 fillInIntent, flagsMask, flagsValues, extraFlags, options); 3832 } else { 3833 // Note we want to go through this call for compatibility with 3834 // existing applications that may have overridden the method. 3835 mParent.startIntentSenderFromChild(this, intent, requestCode, 3836 fillInIntent, flagsMask, flagsValues, extraFlags); 3837 } 3838 } 3839 3840 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3841 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 3842 Bundle options) 3843 throws IntentSender.SendIntentException { 3844 try { 3845 String resolvedType = null; 3846 if (fillInIntent != null) { 3847 fillInIntent.migrateExtraStreamToClipData(); 3848 fillInIntent.prepareToLeaveProcess(); 3849 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3850 } 3851 int result = ActivityManagerNative.getDefault() 3852 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3853 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3854 requestCode, flagsMask, flagsValues, options); 3855 if (result == ActivityManager.START_CANCELED) { 3856 throw new IntentSender.SendIntentException(); 3857 } 3858 Instrumentation.checkStartActivityResult(result, null); 3859 } catch (RemoteException e) { 3860 } 3861 if (requestCode >= 0) { 3862 // If this start is requesting a result, we can avoid making 3863 // the activity visible until the result is received. Setting 3864 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3865 // activity hidden during this time, to avoid flickering. 3866 // This can only be done when a result is requested because 3867 // that guarantees we will get information back when the 3868 // activity is finished, no matter what happens to it. 3869 mStartedActivity = true; 3870 } 3871 } 3872 3873 /** 3874 * Same as {@link #startActivity(Intent, Bundle)} with no options 3875 * specified. 3876 * 3877 * @param intent The intent to start. 3878 * 3879 * @throws android.content.ActivityNotFoundException 3880 * 3881 * @see {@link #startActivity(Intent, Bundle)} 3882 * @see #startActivityForResult 3883 */ 3884 @Override 3885 public void startActivity(Intent intent) { 3886 this.startActivity(intent, null); 3887 } 3888 3889 /** 3890 * Launch a new activity. You will not receive any information about when 3891 * the activity exits. This implementation overrides the base version, 3892 * providing information about 3893 * the activity performing the launch. Because of this additional 3894 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3895 * required; if not specified, the new activity will be added to the 3896 * task of the caller. 3897 * 3898 * <p>This method throws {@link android.content.ActivityNotFoundException} 3899 * if there was no Activity found to run the given Intent. 3900 * 3901 * @param intent The intent to start. 3902 * @param options Additional options for how the Activity should be started. 3903 * See {@link android.content.Context#startActivity(Intent, Bundle) 3904 * Context.startActivity(Intent, Bundle)} for more details. 3905 * 3906 * @throws android.content.ActivityNotFoundException 3907 * 3908 * @see {@link #startActivity(Intent)} 3909 * @see #startActivityForResult 3910 */ 3911 @Override 3912 public void startActivity(Intent intent, @Nullable Bundle options) { 3913 if (options != null) { 3914 startActivityForResult(intent, -1, options); 3915 } else { 3916 // Note we want to go through this call for compatibility with 3917 // applications that may have overridden the method. 3918 startActivityForResult(intent, -1); 3919 } 3920 } 3921 3922 /** 3923 * Same as {@link #startActivities(Intent[], Bundle)} with no options 3924 * specified. 3925 * 3926 * @param intents The intents to start. 3927 * 3928 * @throws android.content.ActivityNotFoundException 3929 * 3930 * @see {@link #startActivities(Intent[], Bundle)} 3931 * @see #startActivityForResult 3932 */ 3933 @Override 3934 public void startActivities(Intent[] intents) { 3935 startActivities(intents, null); 3936 } 3937 3938 /** 3939 * Launch a new activity. You will not receive any information about when 3940 * the activity exits. This implementation overrides the base version, 3941 * providing information about 3942 * the activity performing the launch. Because of this additional 3943 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3944 * required; if not specified, the new activity will be added to the 3945 * task of the caller. 3946 * 3947 * <p>This method throws {@link android.content.ActivityNotFoundException} 3948 * if there was no Activity found to run the given Intent. 3949 * 3950 * @param intents The intents to start. 3951 * @param options Additional options for how the Activity should be started. 3952 * See {@link android.content.Context#startActivity(Intent, Bundle) 3953 * Context.startActivity(Intent, Bundle)} for more details. 3954 * 3955 * @throws android.content.ActivityNotFoundException 3956 * 3957 * @see {@link #startActivities(Intent[])} 3958 * @see #startActivityForResult 3959 */ 3960 @Override 3961 public void startActivities(Intent[] intents, @Nullable Bundle options) { 3962 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3963 mToken, this, intents, options); 3964 } 3965 3966 /** 3967 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 3968 * with no options. 3969 * 3970 * @param intent The IntentSender to launch. 3971 * @param fillInIntent If non-null, this will be provided as the 3972 * intent parameter to {@link IntentSender#sendIntent}. 3973 * @param flagsMask Intent flags in the original IntentSender that you 3974 * would like to change. 3975 * @param flagsValues Desired values for any bits set in 3976 * <var>flagsMask</var> 3977 * @param extraFlags Always set to 0. 3978 */ 3979 public void startIntentSender(IntentSender intent, 3980 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3981 throws IntentSender.SendIntentException { 3982 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 3983 extraFlags, null); 3984 } 3985 3986 /** 3987 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 3988 * to start; see 3989 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 3990 * for more information. 3991 * 3992 * @param intent The IntentSender to launch. 3993 * @param fillInIntent If non-null, this will be provided as the 3994 * intent parameter to {@link IntentSender#sendIntent}. 3995 * @param flagsMask Intent flags in the original IntentSender that you 3996 * would like to change. 3997 * @param flagsValues Desired values for any bits set in 3998 * <var>flagsMask</var> 3999 * @param extraFlags Always set to 0. 4000 * @param options Additional options for how the Activity should be started. 4001 * See {@link android.content.Context#startActivity(Intent, Bundle) 4002 * Context.startActivity(Intent, Bundle)} for more details. If options 4003 * have also been supplied by the IntentSender, options given here will 4004 * override any that conflict with those given by the IntentSender. 4005 */ 4006 public void startIntentSender(IntentSender intent, 4007 @Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 4008 Bundle options) throws IntentSender.SendIntentException { 4009 if (options != null) { 4010 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4011 flagsValues, extraFlags, options); 4012 } else { 4013 // Note we want to go through this call for compatibility with 4014 // applications that may have overridden the method. 4015 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 4016 flagsValues, extraFlags); 4017 } 4018 } 4019 4020 /** 4021 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 4022 * with no options. 4023 * 4024 * @param intent The intent to start. 4025 * @param requestCode If >= 0, this code will be returned in 4026 * onActivityResult() when the activity exits, as described in 4027 * {@link #startActivityForResult}. 4028 * 4029 * @return If a new activity was launched then true is returned; otherwise 4030 * false is returned and you must handle the Intent yourself. 4031 * 4032 * @see #startActivity 4033 * @see #startActivityForResult 4034 */ 4035 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode) { 4036 return startActivityIfNeeded(intent, requestCode, null); 4037 } 4038 4039 /** 4040 * A special variation to launch an activity only if a new activity 4041 * instance is needed to handle the given Intent. In other words, this is 4042 * just like {@link #startActivityForResult(Intent, int)} except: if you are 4043 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 4044 * singleTask or singleTop 4045 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 4046 * and the activity 4047 * that handles <var>intent</var> is the same as your currently running 4048 * activity, then a new instance is not needed. In this case, instead of 4049 * the normal behavior of calling {@link #onNewIntent} this function will 4050 * return and you can handle the Intent yourself. 4051 * 4052 * <p>This function can only be called from a top-level activity; if it is 4053 * called from a child activity, a runtime exception will be thrown. 4054 * 4055 * @param intent The intent to start. 4056 * @param requestCode If >= 0, this code will be returned in 4057 * onActivityResult() when the activity exits, as described in 4058 * {@link #startActivityForResult}. 4059 * @param options Additional options for how the Activity should be started. 4060 * See {@link android.content.Context#startActivity(Intent, Bundle) 4061 * Context.startActivity(Intent, Bundle)} for more details. 4062 * 4063 * @return If a new activity was launched then true is returned; otherwise 4064 * false is returned and you must handle the Intent yourself. 4065 * 4066 * @see #startActivity 4067 * @see #startActivityForResult 4068 */ 4069 public boolean startActivityIfNeeded(@NonNull Intent intent, int requestCode, 4070 @Nullable Bundle options) { 4071 if (mParent == null) { 4072 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 4073 try { 4074 intent.migrateExtraStreamToClipData(); 4075 intent.prepareToLeaveProcess(); 4076 result = ActivityManagerNative.getDefault() 4077 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 4078 intent, intent.resolveTypeIfNeeded(getContentResolver()), 4079 mToken, mEmbeddedID, requestCode, 4080 ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, null, 4081 options); 4082 } catch (RemoteException e) { 4083 // Empty 4084 } 4085 4086 Instrumentation.checkStartActivityResult(result, intent); 4087 4088 if (requestCode >= 0) { 4089 // If this start is requesting a result, we can avoid making 4090 // the activity visible until the result is received. Setting 4091 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 4092 // activity hidden during this time, to avoid flickering. 4093 // This can only be done when a result is requested because 4094 // that guarantees we will get information back when the 4095 // activity is finished, no matter what happens to it. 4096 mStartedActivity = true; 4097 } 4098 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 4099 } 4100 4101 throw new UnsupportedOperationException( 4102 "startActivityIfNeeded can only be called from a top-level activity"); 4103 } 4104 4105 /** 4106 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 4107 * no options. 4108 * 4109 * @param intent The intent to dispatch to the next activity. For 4110 * correct behavior, this must be the same as the Intent that started 4111 * your own activity; the only changes you can make are to the extras 4112 * inside of it. 4113 * 4114 * @return Returns a boolean indicating whether there was another Activity 4115 * to start: true if there was a next activity to start, false if there 4116 * wasn't. In general, if true is returned you will then want to call 4117 * finish() on yourself. 4118 */ 4119 public boolean startNextMatchingActivity(@NonNull Intent intent) { 4120 return startNextMatchingActivity(intent, null); 4121 } 4122 4123 /** 4124 * Special version of starting an activity, for use when you are replacing 4125 * other activity components. You can use this to hand the Intent off 4126 * to the next Activity that can handle it. You typically call this in 4127 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 4128 * 4129 * @param intent The intent to dispatch to the next activity. For 4130 * correct behavior, this must be the same as the Intent that started 4131 * your own activity; the only changes you can make are to the extras 4132 * inside of it. 4133 * @param options Additional options for how the Activity should be started. 4134 * See {@link android.content.Context#startActivity(Intent, Bundle) 4135 * Context.startActivity(Intent, Bundle)} for more details. 4136 * 4137 * @return Returns a boolean indicating whether there was another Activity 4138 * to start: true if there was a next activity to start, false if there 4139 * wasn't. In general, if true is returned you will then want to call 4140 * finish() on yourself. 4141 */ 4142 public boolean startNextMatchingActivity(@NonNull Intent intent, @Nullable Bundle options) { 4143 if (mParent == null) { 4144 try { 4145 intent.migrateExtraStreamToClipData(); 4146 intent.prepareToLeaveProcess(); 4147 return ActivityManagerNative.getDefault() 4148 .startNextMatchingActivity(mToken, intent, options); 4149 } catch (RemoteException e) { 4150 // Empty 4151 } 4152 return false; 4153 } 4154 4155 throw new UnsupportedOperationException( 4156 "startNextMatchingActivity can only be called from a top-level activity"); 4157 } 4158 4159 /** 4160 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 4161 * with no options. 4162 * 4163 * @param child The activity making the call. 4164 * @param intent The intent to start. 4165 * @param requestCode Reply request code. < 0 if reply is not requested. 4166 * 4167 * @throws android.content.ActivityNotFoundException 4168 * 4169 * @see #startActivity 4170 * @see #startActivityForResult 4171 */ 4172 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4173 int requestCode) { 4174 startActivityFromChild(child, intent, requestCode, null); 4175 } 4176 4177 /** 4178 * This is called when a child activity of this one calls its 4179 * {@link #startActivity} or {@link #startActivityForResult} method. 4180 * 4181 * <p>This method throws {@link android.content.ActivityNotFoundException} 4182 * if there was no Activity found to run the given Intent. 4183 * 4184 * @param child The activity making the call. 4185 * @param intent The intent to start. 4186 * @param requestCode Reply request code. < 0 if reply is not requested. 4187 * @param options Additional options for how the Activity should be started. 4188 * See {@link android.content.Context#startActivity(Intent, Bundle) 4189 * Context.startActivity(Intent, Bundle)} for more details. 4190 * 4191 * @throws android.content.ActivityNotFoundException 4192 * 4193 * @see #startActivity 4194 * @see #startActivityForResult 4195 */ 4196 public void startActivityFromChild(@NonNull Activity child, Intent intent, 4197 int requestCode, @Nullable Bundle options) { 4198 Instrumentation.ActivityResult ar = 4199 mInstrumentation.execStartActivity( 4200 this, mMainThread.getApplicationThread(), mToken, child, 4201 intent, requestCode, options); 4202 if (ar != null) { 4203 mMainThread.sendActivityResult( 4204 mToken, child.mEmbeddedID, requestCode, 4205 ar.getResultCode(), ar.getResultData()); 4206 } 4207 } 4208 4209 /** 4210 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 4211 * with no options. 4212 * 4213 * @param fragment The fragment making the call. 4214 * @param intent The intent to start. 4215 * @param requestCode Reply request code. < 0 if reply is not requested. 4216 * 4217 * @throws android.content.ActivityNotFoundException 4218 * 4219 * @see Fragment#startActivity 4220 * @see Fragment#startActivityForResult 4221 */ 4222 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4223 int requestCode) { 4224 Bundle options = null; 4225 if (mWindow.hasFeature(Window.FEATURE_CONTENT_TRANSITIONS)) { 4226 options = ActivityOptions.makeSceneTransitionAnimation(this).toBundle(); 4227 } 4228 startActivityFromFragment(fragment, intent, requestCode, options); 4229 } 4230 4231 /** 4232 * This is called when a Fragment in this activity calls its 4233 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 4234 * method. 4235 * 4236 * <p>This method throws {@link android.content.ActivityNotFoundException} 4237 * if there was no Activity found to run the given Intent. 4238 * 4239 * @param fragment The fragment making the call. 4240 * @param intent The intent to start. 4241 * @param requestCode Reply request code. < 0 if reply is not requested. 4242 * @param options Additional options for how the Activity should be started. 4243 * See {@link android.content.Context#startActivity(Intent, Bundle) 4244 * Context.startActivity(Intent, Bundle)} for more details. 4245 * 4246 * @throws android.content.ActivityNotFoundException 4247 * 4248 * @see Fragment#startActivity 4249 * @see Fragment#startActivityForResult 4250 */ 4251 public void startActivityFromFragment(@NonNull Fragment fragment, Intent intent, 4252 int requestCode, @Nullable Bundle options) { 4253 if (options != null) { 4254 mActivityTransitionState.startExitOutTransition(this, options); 4255 } 4256 Instrumentation.ActivityResult ar = 4257 mInstrumentation.execStartActivity( 4258 this, mMainThread.getApplicationThread(), mToken, fragment, 4259 intent, requestCode, options); 4260 if (ar != null) { 4261 mMainThread.sendActivityResult( 4262 mToken, fragment.mWho, requestCode, 4263 ar.getResultCode(), ar.getResultData()); 4264 } 4265 } 4266 4267 /** 4268 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 4269 * int, Intent, int, int, int, Bundle)} with no options. 4270 */ 4271 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4272 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4273 int extraFlags) 4274 throws IntentSender.SendIntentException { 4275 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 4276 flagsMask, flagsValues, extraFlags, null); 4277 } 4278 4279 /** 4280 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 4281 * taking a IntentSender; see 4282 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 4283 * for more information. 4284 */ 4285 public void startIntentSenderFromChild(Activity child, IntentSender intent, 4286 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 4287 int extraFlags, @Nullable Bundle options) 4288 throws IntentSender.SendIntentException { 4289 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 4290 flagsMask, flagsValues, child, options); 4291 } 4292 4293 /** 4294 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 4295 * or {@link #finish} to specify an explicit transition animation to 4296 * perform next. 4297 * 4298 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 4299 * to using this with starting activities is to supply the desired animation 4300 * information through a {@link ActivityOptions} bundle to 4301 * {@link #startActivity(Intent, Bundle) or a related function. This allows 4302 * you to specify a custom animation even when starting an activity from 4303 * outside the context of the current top activity. 4304 * 4305 * @param enterAnim A resource ID of the animation resource to use for 4306 * the incoming activity. Use 0 for no animation. 4307 * @param exitAnim A resource ID of the animation resource to use for 4308 * the outgoing activity. Use 0 for no animation. 4309 */ 4310 public void overridePendingTransition(int enterAnim, int exitAnim) { 4311 try { 4312 ActivityManagerNative.getDefault().overridePendingTransition( 4313 mToken, getPackageName(), enterAnim, exitAnim); 4314 } catch (RemoteException e) { 4315 } 4316 } 4317 4318 /** 4319 * Call this to set the result that your activity will return to its 4320 * caller. 4321 * 4322 * @param resultCode The result code to propagate back to the originating 4323 * activity, often RESULT_CANCELED or RESULT_OK 4324 * 4325 * @see #RESULT_CANCELED 4326 * @see #RESULT_OK 4327 * @see #RESULT_FIRST_USER 4328 * @see #setResult(int, Intent) 4329 */ 4330 public final void setResult(int resultCode) { 4331 synchronized (this) { 4332 mResultCode = resultCode; 4333 mResultData = null; 4334 } 4335 } 4336 4337 /** 4338 * Call this to set the result that your activity will return to its 4339 * caller. 4340 * 4341 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4342 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4343 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4344 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4345 * Activity receiving the result access to the specific URIs in the Intent. 4346 * Access will remain until the Activity has finished (it will remain across the hosting 4347 * process being killed and other temporary destruction) and will be added 4348 * to any existing set of URI permissions it already holds. 4349 * 4350 * @param resultCode The result code to propagate back to the originating 4351 * activity, often RESULT_CANCELED or RESULT_OK 4352 * @param data The data to propagate back to the originating activity. 4353 * 4354 * @see #RESULT_CANCELED 4355 * @see #RESULT_OK 4356 * @see #RESULT_FIRST_USER 4357 * @see #setResult(int) 4358 */ 4359 public final void setResult(int resultCode, Intent data) { 4360 synchronized (this) { 4361 mResultCode = resultCode; 4362 mResultData = data; 4363 } 4364 } 4365 4366 /** 4367 * Return the name of the package that invoked this activity. This is who 4368 * the data in {@link #setResult setResult()} will be sent to. You can 4369 * use this information to validate that the recipient is allowed to 4370 * receive the data. 4371 * 4372 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4373 * did not use the {@link #startActivityForResult} 4374 * form that includes a request code), then the calling package will be 4375 * null.</p> 4376 * 4377 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4378 * the result from this method was unstable. If the process hosting the calling 4379 * package was no longer running, it would return null instead of the proper package 4380 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4381 * from that instead.</p> 4382 * 4383 * @return The package of the activity that will receive your 4384 * reply, or null if none. 4385 */ 4386 @Nullable 4387 public String getCallingPackage() { 4388 try { 4389 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4390 } catch (RemoteException e) { 4391 return null; 4392 } 4393 } 4394 4395 /** 4396 * Return the name of the activity that invoked this activity. This is 4397 * who the data in {@link #setResult setResult()} will be sent to. You 4398 * can use this information to validate that the recipient is allowed to 4399 * receive the data. 4400 * 4401 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4402 * did not use the {@link #startActivityForResult} 4403 * form that includes a request code), then the calling package will be 4404 * null. 4405 * 4406 * @return The ComponentName of the activity that will receive your 4407 * reply, or null if none. 4408 */ 4409 @Nullable 4410 public ComponentName getCallingActivity() { 4411 try { 4412 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4413 } catch (RemoteException e) { 4414 return null; 4415 } 4416 } 4417 4418 /** 4419 * Control whether this activity's main window is visible. This is intended 4420 * only for the special case of an activity that is not going to show a 4421 * UI itself, but can't just finish prior to onResume() because it needs 4422 * to wait for a service binding or such. Setting this to false allows 4423 * you to prevent your UI from being shown during that time. 4424 * 4425 * <p>The default value for this is taken from the 4426 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4427 */ 4428 public void setVisible(boolean visible) { 4429 if (mVisibleFromClient != visible) { 4430 mVisibleFromClient = visible; 4431 if (mVisibleFromServer) { 4432 if (visible) makeVisible(); 4433 else mDecor.setVisibility(View.INVISIBLE); 4434 } 4435 } 4436 } 4437 4438 void makeVisible() { 4439 if (!mWindowAdded) { 4440 ViewManager wm = getWindowManager(); 4441 wm.addView(mDecor, getWindow().getAttributes()); 4442 mWindowAdded = true; 4443 } 4444 mDecor.setVisibility(View.VISIBLE); 4445 } 4446 4447 /** 4448 * Check to see whether this activity is in the process of finishing, 4449 * either because you called {@link #finish} on it or someone else 4450 * has requested that it finished. This is often used in 4451 * {@link #onPause} to determine whether the activity is simply pausing or 4452 * completely finishing. 4453 * 4454 * @return If the activity is finishing, returns true; else returns false. 4455 * 4456 * @see #finish 4457 */ 4458 public boolean isFinishing() { 4459 return mFinished; 4460 } 4461 4462 /** 4463 * Returns true if the final {@link #onDestroy()} call has been made 4464 * on the Activity, so this instance is now dead. 4465 */ 4466 public boolean isDestroyed() { 4467 return mDestroyed; 4468 } 4469 4470 /** 4471 * Check to see whether this activity is in the process of being destroyed in order to be 4472 * recreated with a new configuration. This is often used in 4473 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4474 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4475 * 4476 * @return If the activity is being torn down in order to be recreated with a new configuration, 4477 * returns true; else returns false. 4478 */ 4479 public boolean isChangingConfigurations() { 4480 return mChangingConfigurations; 4481 } 4482 4483 /** 4484 * Cause this Activity to be recreated with a new instance. This results 4485 * in essentially the same flow as when the Activity is created due to 4486 * a configuration change -- the current instance will go through its 4487 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4488 */ 4489 public void recreate() { 4490 if (mParent != null) { 4491 throw new IllegalStateException("Can only be called on top-level activity"); 4492 } 4493 if (Looper.myLooper() != mMainThread.getLooper()) { 4494 throw new IllegalStateException("Must be called from main thread"); 4495 } 4496 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 4497 } 4498 4499 /** 4500 * Finishes the current activity and specifies whether to remove the task associated with this 4501 * activity. 4502 */ 4503 private void finish(boolean finishTask) { 4504 if (mParent == null) { 4505 int resultCode; 4506 Intent resultData; 4507 synchronized (this) { 4508 resultCode = mResultCode; 4509 resultData = mResultData; 4510 } 4511 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4512 try { 4513 if (resultData != null) { 4514 resultData.prepareToLeaveProcess(); 4515 } 4516 if (ActivityManagerNative.getDefault() 4517 .finishActivity(mToken, resultCode, resultData, finishTask)) { 4518 mFinished = true; 4519 } 4520 } catch (RemoteException e) { 4521 // Empty 4522 } 4523 } else { 4524 mParent.finishFromChild(this); 4525 } 4526 } 4527 4528 /** 4529 * Call this when your activity is done and should be closed. The 4530 * ActivityResult is propagated back to whoever launched you via 4531 * onActivityResult(). 4532 */ 4533 public void finish() { 4534 finish(false); 4535 } 4536 4537 /** 4538 * Finish this activity as well as all activities immediately below it 4539 * in the current task that have the same affinity. This is typically 4540 * used when an application can be launched on to another task (such as 4541 * from an ACTION_VIEW of a content type it understands) and the user 4542 * has used the up navigation to switch out of the current task and in 4543 * to its own task. In this case, if the user has navigated down into 4544 * any other activities of the second application, all of those should 4545 * be removed from the original task as part of the task switch. 4546 * 4547 * <p>Note that this finish does <em>not</em> allow you to deliver results 4548 * to the previous activity, and an exception will be thrown if you are trying 4549 * to do so.</p> 4550 */ 4551 public void finishAffinity() { 4552 if (mParent != null) { 4553 throw new IllegalStateException("Can not be called from an embedded activity"); 4554 } 4555 if (mResultCode != RESULT_CANCELED || mResultData != null) { 4556 throw new IllegalStateException("Can not be called to deliver a result"); 4557 } 4558 try { 4559 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 4560 mFinished = true; 4561 } 4562 } catch (RemoteException e) { 4563 // Empty 4564 } 4565 } 4566 4567 /** 4568 * This is called when a child activity of this one calls its 4569 * {@link #finish} method. The default implementation simply calls 4570 * finish() on this activity (the parent), finishing the entire group. 4571 * 4572 * @param child The activity making the call. 4573 * 4574 * @see #finish 4575 */ 4576 public void finishFromChild(Activity child) { 4577 finish(); 4578 } 4579 4580 /** 4581 * Reverses the Activity Scene entry Transition and triggers the calling Activity 4582 * to reverse its exit Transition. When the exit Transition completes, 4583 * {@link #finish()} is called. If no entry Transition was used, finish() is called 4584 * immediately and the Activity exit Transition is run. 4585 * @see android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[]) 4586 */ 4587 public void finishAfterTransition() { 4588 if (!mActivityTransitionState.startExitBackTransition(this)) { 4589 finish(); 4590 } 4591 } 4592 4593 /** 4594 * Force finish another activity that you had previously started with 4595 * {@link #startActivityForResult}. 4596 * 4597 * @param requestCode The request code of the activity that you had 4598 * given to startActivityForResult(). If there are multiple 4599 * activities started with this request code, they 4600 * will all be finished. 4601 */ 4602 public void finishActivity(int requestCode) { 4603 if (mParent == null) { 4604 try { 4605 ActivityManagerNative.getDefault() 4606 .finishSubActivity(mToken, mEmbeddedID, requestCode); 4607 } catch (RemoteException e) { 4608 // Empty 4609 } 4610 } else { 4611 mParent.finishActivityFromChild(this, requestCode); 4612 } 4613 } 4614 4615 /** 4616 * This is called when a child activity of this one calls its 4617 * finishActivity(). 4618 * 4619 * @param child The activity making the call. 4620 * @param requestCode Request code that had been used to start the 4621 * activity. 4622 */ 4623 public void finishActivityFromChild(@NonNull Activity child, int requestCode) { 4624 try { 4625 ActivityManagerNative.getDefault() 4626 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 4627 } catch (RemoteException e) { 4628 // Empty 4629 } 4630 } 4631 4632 /** 4633 * Call this when your activity is done and should be closed and the task should be completely 4634 * removed as a part of finishing the Activity. 4635 */ 4636 public void finishAndRemoveTask() { 4637 finish(true); 4638 } 4639 4640 /** 4641 * Called when an activity you launched exits, giving you the requestCode 4642 * you started it with, the resultCode it returned, and any additional 4643 * data from it. The <var>resultCode</var> will be 4644 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 4645 * didn't return any result, or crashed during its operation. 4646 * 4647 * <p>You will receive this call immediately before onResume() when your 4648 * activity is re-starting. 4649 * 4650 * @param requestCode The integer request code originally supplied to 4651 * startActivityForResult(), allowing you to identify who this 4652 * result came from. 4653 * @param resultCode The integer result code returned by the child activity 4654 * through its setResult(). 4655 * @param data An Intent, which can return result data to the caller 4656 * (various data can be attached to Intent "extras"). 4657 * 4658 * @see #startActivityForResult 4659 * @see #createPendingResult 4660 * @see #setResult(int) 4661 */ 4662 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 4663 } 4664 4665 /** 4666 * Called when an activity you launched with an activity transition exposes this 4667 * Activity through a returning activity transition, giving you the resultCode 4668 * and any additional data from it. This method will only be called if the activity 4669 * set a result code other than {@link #RESULT_CANCELED} and it supports activity 4670 * transitions with {@link Window#FEATURE_CONTENT_TRANSITIONS}. 4671 * 4672 * <p>The purpose of this function is to let the called Activity send a hint about 4673 * its state so that this underlying Activity can prepare to be exposed. A call to 4674 * this method does not guarantee that the called Activity has or will be exiting soon. 4675 * It only indicates that it will expose this Activity's Window and it has 4676 * some data to pass to prepare it.</p> 4677 * 4678 * @param resultCode The integer result code returned by the child activity 4679 * through its setResult(). 4680 * @param data An Intent, which can return result data to the caller 4681 * (various data can be attached to Intent "extras"). 4682 */ 4683 protected void onActivityReenter(int resultCode, Intent data) { 4684 } 4685 4686 /** 4687 * Create a new PendingIntent object which you can hand to others 4688 * for them to use to send result data back to your 4689 * {@link #onActivityResult} callback. The created object will be either 4690 * one-shot (becoming invalid after a result is sent back) or multiple 4691 * (allowing any number of results to be sent through it). 4692 * 4693 * @param requestCode Private request code for the sender that will be 4694 * associated with the result data when it is returned. The sender can not 4695 * modify this value, allowing you to identify incoming results. 4696 * @param data Default data to supply in the result, which may be modified 4697 * by the sender. 4698 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 4699 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 4700 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 4701 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 4702 * or any of the flags as supported by 4703 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 4704 * of the intent that can be supplied when the actual send happens. 4705 * 4706 * @return Returns an existing or new PendingIntent matching the given 4707 * parameters. May return null only if 4708 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 4709 * supplied. 4710 * 4711 * @see PendingIntent 4712 */ 4713 public PendingIntent createPendingResult(int requestCode, @NonNull Intent data, 4714 @PendingIntent.Flags int flags) { 4715 String packageName = getPackageName(); 4716 try { 4717 data.prepareToLeaveProcess(); 4718 IIntentSender target = 4719 ActivityManagerNative.getDefault().getIntentSender( 4720 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 4721 mParent == null ? mToken : mParent.mToken, 4722 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 4723 UserHandle.myUserId()); 4724 return target != null ? new PendingIntent(target) : null; 4725 } catch (RemoteException e) { 4726 // Empty 4727 } 4728 return null; 4729 } 4730 4731 /** 4732 * Change the desired orientation of this activity. If the activity 4733 * is currently in the foreground or otherwise impacting the screen 4734 * orientation, the screen will immediately be changed (possibly causing 4735 * the activity to be restarted). Otherwise, this will be used the next 4736 * time the activity is visible. 4737 * 4738 * @param requestedOrientation An orientation constant as used in 4739 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4740 */ 4741 public void setRequestedOrientation(@ActivityInfo.ScreenOrientation int requestedOrientation) { 4742 if (mParent == null) { 4743 try { 4744 ActivityManagerNative.getDefault().setRequestedOrientation( 4745 mToken, requestedOrientation); 4746 } catch (RemoteException e) { 4747 // Empty 4748 } 4749 } else { 4750 mParent.setRequestedOrientation(requestedOrientation); 4751 } 4752 } 4753 4754 /** 4755 * Return the current requested orientation of the activity. This will 4756 * either be the orientation requested in its component's manifest, or 4757 * the last requested orientation given to 4758 * {@link #setRequestedOrientation(int)}. 4759 * 4760 * @return Returns an orientation constant as used in 4761 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4762 */ 4763 @ActivityInfo.ScreenOrientation 4764 public int getRequestedOrientation() { 4765 if (mParent == null) { 4766 try { 4767 return ActivityManagerNative.getDefault() 4768 .getRequestedOrientation(mToken); 4769 } catch (RemoteException e) { 4770 // Empty 4771 } 4772 } else { 4773 return mParent.getRequestedOrientation(); 4774 } 4775 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4776 } 4777 4778 /** 4779 * Return the identifier of the task this activity is in. This identifier 4780 * will remain the same for the lifetime of the activity. 4781 * 4782 * @return Task identifier, an opaque integer. 4783 */ 4784 public int getTaskId() { 4785 try { 4786 return ActivityManagerNative.getDefault() 4787 .getTaskForActivity(mToken, false); 4788 } catch (RemoteException e) { 4789 return -1; 4790 } 4791 } 4792 4793 /** 4794 * Return whether this activity is the root of a task. The root is the 4795 * first activity in a task. 4796 * 4797 * @return True if this is the root activity, else false. 4798 */ 4799 public boolean isTaskRoot() { 4800 try { 4801 return ActivityManagerNative.getDefault() 4802 .getTaskForActivity(mToken, true) >= 0; 4803 } catch (RemoteException e) { 4804 return false; 4805 } 4806 } 4807 4808 /** 4809 * Move the task containing this activity to the back of the activity 4810 * stack. The activity's order within the task is unchanged. 4811 * 4812 * @param nonRoot If false then this only works if the activity is the root 4813 * of a task; if true it will work for any activity in 4814 * a task. 4815 * 4816 * @return If the task was moved (or it was already at the 4817 * back) true is returned, else false. 4818 */ 4819 public boolean moveTaskToBack(boolean nonRoot) { 4820 try { 4821 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 4822 mToken, nonRoot); 4823 } catch (RemoteException e) { 4824 // Empty 4825 } 4826 return false; 4827 } 4828 4829 /** 4830 * Returns class name for this activity with the package prefix removed. 4831 * This is the default name used to read and write settings. 4832 * 4833 * @return The local class name. 4834 */ 4835 @NonNull 4836 public String getLocalClassName() { 4837 final String pkg = getPackageName(); 4838 final String cls = mComponent.getClassName(); 4839 int packageLen = pkg.length(); 4840 if (!cls.startsWith(pkg) || cls.length() <= packageLen 4841 || cls.charAt(packageLen) != '.') { 4842 return cls; 4843 } 4844 return cls.substring(packageLen+1); 4845 } 4846 4847 /** 4848 * Returns complete component name of this activity. 4849 * 4850 * @return Returns the complete component name for this activity 4851 */ 4852 public ComponentName getComponentName() 4853 { 4854 return mComponent; 4855 } 4856 4857 /** 4858 * Retrieve a {@link SharedPreferences} object for accessing preferences 4859 * that are private to this activity. This simply calls the underlying 4860 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 4861 * class name as the preferences name. 4862 * 4863 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 4864 * operation, {@link #MODE_WORLD_READABLE} and 4865 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 4866 * 4867 * @return Returns the single SharedPreferences instance that can be used 4868 * to retrieve and modify the preference values. 4869 */ 4870 public SharedPreferences getPreferences(int mode) { 4871 return getSharedPreferences(getLocalClassName(), mode); 4872 } 4873 4874 private void ensureSearchManager() { 4875 if (mSearchManager != null) { 4876 return; 4877 } 4878 4879 mSearchManager = new SearchManager(this, null); 4880 } 4881 4882 @Override 4883 public Object getSystemService(@ServiceName @NonNull String name) { 4884 if (getBaseContext() == null) { 4885 throw new IllegalStateException( 4886 "System services not available to Activities before onCreate()"); 4887 } 4888 4889 if (WINDOW_SERVICE.equals(name)) { 4890 return mWindowManager; 4891 } else if (SEARCH_SERVICE.equals(name)) { 4892 ensureSearchManager(); 4893 return mSearchManager; 4894 } 4895 return super.getSystemService(name); 4896 } 4897 4898 /** 4899 * Change the title associated with this activity. If this is a 4900 * top-level activity, the title for its window will change. If it 4901 * is an embedded activity, the parent can do whatever it wants 4902 * with it. 4903 */ 4904 public void setTitle(CharSequence title) { 4905 mTitle = title; 4906 onTitleChanged(title, mTitleColor); 4907 4908 if (mParent != null) { 4909 mParent.onChildTitleChanged(this, title); 4910 } 4911 } 4912 4913 /** 4914 * Change the title associated with this activity. If this is a 4915 * top-level activity, the title for its window will change. If it 4916 * is an embedded activity, the parent can do whatever it wants 4917 * with it. 4918 */ 4919 public void setTitle(int titleId) { 4920 setTitle(getText(titleId)); 4921 } 4922 4923 /** 4924 * Change the color of the title associated with this activity. 4925 * <p> 4926 * This method is deprecated starting in API Level 11 and replaced by action 4927 * bar styles. For information on styling the Action Bar, read the <a 4928 * href="{@docRoot} guide/topics/ui/actionbar.html">Action Bar</a> developer 4929 * guide. 4930 * 4931 * @deprecated Use action bar styles instead. 4932 */ 4933 @Deprecated 4934 public void setTitleColor(int textColor) { 4935 mTitleColor = textColor; 4936 onTitleChanged(mTitle, textColor); 4937 } 4938 4939 public final CharSequence getTitle() { 4940 return mTitle; 4941 } 4942 4943 public final int getTitleColor() { 4944 return mTitleColor; 4945 } 4946 4947 protected void onTitleChanged(CharSequence title, int color) { 4948 if (mTitleReady) { 4949 final Window win = getWindow(); 4950 if (win != null) { 4951 win.setTitle(title); 4952 if (color != 0) { 4953 win.setTitleColor(color); 4954 } 4955 } 4956 } 4957 } 4958 4959 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4960 } 4961 4962 /** 4963 * Sets information describing the task with this activity for presentation inside the Recents 4964 * System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task 4965 * are traversed in order from the topmost activity to the bottommost. The traversal continues 4966 * for each property until a suitable value is found. For each task the taskDescription will be 4967 * returned in {@link android.app.ActivityManager.TaskDescription}. 4968 * 4969 * @see ActivityManager#getRecentTasks 4970 * @see android.app.ActivityManager.TaskDescription 4971 * 4972 * @param taskDescription The TaskDescription properties that describe the task with this activity 4973 */ 4974 public void setTaskDescription(ActivityManager.TaskDescription taskDescription) { 4975 ActivityManager.TaskDescription td; 4976 // Scale the icon down to something reasonable if it is provided 4977 if (taskDescription.getIcon() != null) { 4978 final int size = ActivityManager.getLauncherLargeIconSizeInner(this); 4979 final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, true); 4980 td = new ActivityManager.TaskDescription(taskDescription.getLabel(), icon, 4981 taskDescription.getPrimaryColor()); 4982 } else { 4983 td = taskDescription; 4984 } 4985 try { 4986 ActivityManagerNative.getDefault().setTaskDescription(mToken, td); 4987 } catch (RemoteException e) { 4988 } 4989 } 4990 4991 /** 4992 * Sets the visibility of the progress bar in the title. 4993 * <p> 4994 * In order for the progress bar to be shown, the feature must be requested 4995 * via {@link #requestWindowFeature(int)}. 4996 * 4997 * @param visible Whether to show the progress bars in the title. 4998 */ 4999 public final void setProgressBarVisibility(boolean visible) { 5000 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 5001 Window.PROGRESS_VISIBILITY_OFF); 5002 } 5003 5004 /** 5005 * Sets the visibility of the indeterminate progress bar in the title. 5006 * <p> 5007 * In order for the progress bar to be shown, the feature must be requested 5008 * via {@link #requestWindowFeature(int)}. 5009 * 5010 * @param visible Whether to show the progress bars in the title. 5011 */ 5012 public final void setProgressBarIndeterminateVisibility(boolean visible) { 5013 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 5014 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 5015 } 5016 5017 /** 5018 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 5019 * is always indeterminate). 5020 * <p> 5021 * In order for the progress bar to be shown, the feature must be requested 5022 * via {@link #requestWindowFeature(int)}. 5023 * 5024 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 5025 */ 5026 public final void setProgressBarIndeterminate(boolean indeterminate) { 5027 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5028 indeterminate ? Window.PROGRESS_INDETERMINATE_ON 5029 : Window.PROGRESS_INDETERMINATE_OFF); 5030 } 5031 5032 /** 5033 * Sets the progress for the progress bars in the title. 5034 * <p> 5035 * In order for the progress bar to be shown, the feature must be requested 5036 * via {@link #requestWindowFeature(int)}. 5037 * 5038 * @param progress The progress for the progress bar. Valid ranges are from 5039 * 0 to 10000 (both inclusive). If 10000 is given, the progress 5040 * bar will be completely filled and will fade out. 5041 */ 5042 public final void setProgress(int progress) { 5043 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 5044 } 5045 5046 /** 5047 * Sets the secondary progress for the progress bar in the title. This 5048 * progress is drawn between the primary progress (set via 5049 * {@link #setProgress(int)} and the background. It can be ideal for media 5050 * scenarios such as showing the buffering progress while the default 5051 * progress shows the play progress. 5052 * <p> 5053 * In order for the progress bar to be shown, the feature must be requested 5054 * via {@link #requestWindowFeature(int)}. 5055 * 5056 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 5057 * 0 to 10000 (both inclusive). 5058 */ 5059 public final void setSecondaryProgress(int secondaryProgress) { 5060 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 5061 secondaryProgress + Window.PROGRESS_SECONDARY_START); 5062 } 5063 5064 /** 5065 * Suggests an audio stream whose volume should be changed by the hardware 5066 * volume controls. 5067 * <p> 5068 * The suggested audio stream will be tied to the window of this Activity. 5069 * If the Activity is switched, the stream set here is no longer the 5070 * suggested stream. The client does not need to save and restore the old 5071 * suggested stream value in onPause and onResume. 5072 * 5073 * @param streamType The type of the audio stream whose volume should be 5074 * changed by the hardware volume controls. It is not guaranteed that 5075 * the hardware volume controls will always change this stream's 5076 * volume (for example, if a call is in progress, its stream's volume 5077 * may be changed instead). To reset back to the default, use 5078 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 5079 */ 5080 public final void setVolumeControlStream(int streamType) { 5081 getWindow().setVolumeControlStream(streamType); 5082 } 5083 5084 /** 5085 * Gets the suggested audio stream whose volume should be changed by the 5086 * hardware volume controls. 5087 * 5088 * @return The suggested audio stream type whose volume should be changed by 5089 * the hardware volume controls. 5090 * @see #setVolumeControlStream(int) 5091 */ 5092 public final int getVolumeControlStream() { 5093 return getWindow().getVolumeControlStream(); 5094 } 5095 5096 /** 5097 * Runs the specified action on the UI thread. If the current thread is the UI 5098 * thread, then the action is executed immediately. If the current thread is 5099 * not the UI thread, the action is posted to the event queue of the UI thread. 5100 * 5101 * @param action the action to run on the UI thread 5102 */ 5103 public final void runOnUiThread(Runnable action) { 5104 if (Thread.currentThread() != mUiThread) { 5105 mHandler.post(action); 5106 } else { 5107 action.run(); 5108 } 5109 } 5110 5111 /** 5112 * Standard implementation of 5113 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 5114 * inflating with the LayoutInflater returned by {@link #getSystemService}. 5115 * This implementation does nothing and is for 5116 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 5117 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 5118 * 5119 * @see android.view.LayoutInflater#createView 5120 * @see android.view.Window#getLayoutInflater 5121 */ 5122 @Nullable 5123 public View onCreateView(String name, Context context, AttributeSet attrs) { 5124 return null; 5125 } 5126 5127 /** 5128 * Standard implementation of 5129 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 5130 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 5131 * This implementation handles <fragment> tags to embed fragments inside 5132 * of the activity. 5133 * 5134 * @see android.view.LayoutInflater#createView 5135 * @see android.view.Window#getLayoutInflater 5136 */ 5137 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 5138 if (!"fragment".equals(name)) { 5139 return onCreateView(name, context, attrs); 5140 } 5141 5142 return mFragments.onCreateView(parent, name, context, attrs); 5143 } 5144 5145 /** 5146 * Print the Activity's state into the given stream. This gets invoked if 5147 * you run "adb shell dumpsys activity <activity_component_name>". 5148 * 5149 * @param prefix Desired prefix to prepend at each line of output. 5150 * @param fd The raw file descriptor that the dump is being sent to. 5151 * @param writer The PrintWriter to which you should dump your state. This will be 5152 * closed for you after you return. 5153 * @param args additional arguments to the dump request. 5154 */ 5155 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5156 dumpInner(prefix, fd, writer, args); 5157 } 5158 5159 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5160 writer.print(prefix); writer.print("Local Activity "); 5161 writer.print(Integer.toHexString(System.identityHashCode(this))); 5162 writer.println(" State:"); 5163 String innerPrefix = prefix + " "; 5164 writer.print(innerPrefix); writer.print("mResumed="); 5165 writer.print(mResumed); writer.print(" mStopped="); 5166 writer.print(mStopped); writer.print(" mFinished="); 5167 writer.println(mFinished); 5168 writer.print(innerPrefix); writer.print("mLoadersStarted="); 5169 writer.println(mLoadersStarted); 5170 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 5171 writer.println(mChangingConfigurations); 5172 writer.print(innerPrefix); writer.print("mCurrentConfig="); 5173 writer.println(mCurrentConfig); 5174 5175 if (mLoaderManager != null) { 5176 writer.print(prefix); writer.print("Loader Manager "); 5177 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 5178 writer.println(":"); 5179 mLoaderManager.dump(prefix + " ", fd, writer, args); 5180 } 5181 5182 mFragments.dump(prefix, fd, writer, args); 5183 5184 if (getWindow() != null && 5185 getWindow().peekDecorView() != null && 5186 getWindow().peekDecorView().getViewRootImpl() != null) { 5187 getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); 5188 } 5189 5190 mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix); 5191 } 5192 5193 /** 5194 * Bit indicating that this activity is "immersive" and should not be 5195 * interrupted by notifications if possible. 5196 * 5197 * This value is initially set by the manifest property 5198 * <code>android:immersive</code> but may be changed at runtime by 5199 * {@link #setImmersive}. 5200 * 5201 * @see #setImmersive(boolean) 5202 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5203 */ 5204 public boolean isImmersive() { 5205 try { 5206 return ActivityManagerNative.getDefault().isImmersive(mToken); 5207 } catch (RemoteException e) { 5208 return false; 5209 } 5210 } 5211 5212 /** 5213 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 5214 * fullscreen opaque Activity. 5215 * <p> 5216 * Call this whenever the background of a translucent Activity has changed to become opaque. 5217 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 5218 * <p> 5219 * This call has no effect on non-translucent activities or on activities with the 5220 * {@link android.R.attr#windowIsFloating} attribute. 5221 * 5222 * @see #convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5223 * ActivityOptions) 5224 * @see TranslucentConversionListener 5225 * 5226 * @hide 5227 */ 5228 public void convertFromTranslucent() { 5229 try { 5230 mTranslucentCallback = null; 5231 if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { 5232 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); 5233 } 5234 } catch (RemoteException e) { 5235 // pass 5236 } 5237 } 5238 5239 /** 5240 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 5241 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 5242 * <p> 5243 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 5244 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 5245 * be called indicating that it is safe to make this activity translucent again. Until 5246 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 5247 * behind the frontmost Activity will be indeterminate. 5248 * <p> 5249 * This call has no effect on non-translucent activities or on activities with the 5250 * {@link android.R.attr#windowIsFloating} attribute. 5251 * 5252 * @param callback the method to call when all visible Activities behind this one have been 5253 * drawn and it is safe to make this Activity translucent again. 5254 * @param options activity options delivered to the activity below this one. The options 5255 * are retrieved using {@link #getActivityOptions}. 5256 * @return <code>true</code> if Window was opaque and will become translucent or 5257 * <code>false</code> if window was translucent and no change needed to be made. 5258 * 5259 * @see #convertFromTranslucent() 5260 * @see TranslucentConversionListener 5261 * 5262 * @hide 5263 */ 5264 public boolean convertToTranslucent(TranslucentConversionListener callback, 5265 ActivityOptions options) { 5266 boolean drawComplete; 5267 try { 5268 mTranslucentCallback = callback; 5269 mChangeCanvasToTranslucent = 5270 ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); 5271 drawComplete = true; 5272 } catch (RemoteException e) { 5273 // Make callback return as though it timed out. 5274 mChangeCanvasToTranslucent = false; 5275 drawComplete = false; 5276 } 5277 if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { 5278 // Window is already translucent. 5279 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5280 } 5281 return mChangeCanvasToTranslucent; 5282 } 5283 5284 /** @hide */ 5285 void onTranslucentConversionComplete(boolean drawComplete) { 5286 if (mTranslucentCallback != null) { 5287 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 5288 mTranslucentCallback = null; 5289 } 5290 if (mChangeCanvasToTranslucent) { 5291 WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); 5292 } 5293 } 5294 5295 /** 5296 * Retrieve the ActivityOptions passed in from the launching activity or passed back 5297 * from an activity launched by this activity in its call to {@link 5298 * #convertToTranslucent(TranslucentConversionListener, ActivityOptions)} 5299 * 5300 * @return The ActivityOptions passed to {@link #convertToTranslucent}. 5301 * @hide 5302 */ 5303 ActivityOptions getActivityOptions() { 5304 try { 5305 return ActivityManagerNative.getDefault().getActivityOptions(mToken); 5306 } catch (RemoteException e) { 5307 } 5308 return null; 5309 } 5310 5311 /** 5312 * Adjust the current immersive mode setting. 5313 * 5314 * Note that changing this value will have no effect on the activity's 5315 * {@link android.content.pm.ActivityInfo} structure; that is, if 5316 * <code>android:immersive</code> is set to <code>true</code> 5317 * in the application's manifest entry for this activity, the {@link 5318 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 5319 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5320 * FLAG_IMMERSIVE} bit set. 5321 * 5322 * @see #isImmersive() 5323 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 5324 */ 5325 public void setImmersive(boolean i) { 5326 try { 5327 ActivityManagerNative.getDefault().setImmersive(mToken, i); 5328 } catch (RemoteException e) { 5329 // pass 5330 } 5331 } 5332 5333 /** 5334 * Start an action mode. 5335 * 5336 * @param callback Callback that will manage lifecycle events for this context mode 5337 * @return The ContextMode that was started, or null if it was canceled 5338 * 5339 * @see ActionMode 5340 */ 5341 @Nullable 5342 public ActionMode startActionMode(ActionMode.Callback callback) { 5343 return mWindow.getDecorView().startActionMode(callback); 5344 } 5345 5346 /** 5347 * Give the Activity a chance to control the UI for an action mode requested 5348 * by the system. 5349 * 5350 * <p>Note: If you are looking for a notification callback that an action mode 5351 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 5352 * 5353 * @param callback The callback that should control the new action mode 5354 * @return The new action mode, or <code>null</code> if the activity does not want to 5355 * provide special handling for this action mode. (It will be handled by the system.) 5356 */ 5357 @Nullable 5358 @Override 5359 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 5360 initWindowDecorActionBar(); 5361 if (mActionBar != null) { 5362 return mActionBar.startActionMode(callback); 5363 } 5364 return null; 5365 } 5366 5367 /** 5368 * Notifies the Activity that an action mode has been started. 5369 * Activity subclasses overriding this method should call the superclass implementation. 5370 * 5371 * @param mode The new action mode. 5372 */ 5373 @Override 5374 public void onActionModeStarted(ActionMode mode) { 5375 } 5376 5377 /** 5378 * Notifies the activity that an action mode has finished. 5379 * Activity subclasses overriding this method should call the superclass implementation. 5380 * 5381 * @param mode The action mode that just finished. 5382 */ 5383 @Override 5384 public void onActionModeFinished(ActionMode mode) { 5385 } 5386 5387 /** 5388 * Returns true if the app should recreate the task when navigating 'up' from this activity 5389 * by using targetIntent. 5390 * 5391 * <p>If this method returns false the app can trivially call 5392 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 5393 * up navigation. If this method returns false, the app should synthesize a new task stack 5394 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 5395 * 5396 * @param targetIntent An intent representing the target destination for up navigation 5397 * @return true if navigating up should recreate a new task stack, false if the same task 5398 * should be used for the destination 5399 */ 5400 public boolean shouldUpRecreateTask(Intent targetIntent) { 5401 try { 5402 PackageManager pm = getPackageManager(); 5403 ComponentName cn = targetIntent.getComponent(); 5404 if (cn == null) { 5405 cn = targetIntent.resolveActivity(pm); 5406 } 5407 ActivityInfo info = pm.getActivityInfo(cn, 0); 5408 if (info.taskAffinity == null) { 5409 return false; 5410 } 5411 return !ActivityManagerNative.getDefault() 5412 .targetTaskAffinityMatchesActivity(mToken, info.taskAffinity); 5413 } catch (RemoteException e) { 5414 return false; 5415 } catch (NameNotFoundException e) { 5416 return false; 5417 } 5418 } 5419 5420 /** 5421 * Navigate from this activity to the activity specified by upIntent, finishing this activity 5422 * in the process. If the activity indicated by upIntent already exists in the task's history, 5423 * this activity and all others before the indicated activity in the history stack will be 5424 * finished. 5425 * 5426 * <p>If the indicated activity does not appear in the history stack, this will finish 5427 * each activity in this task until the root activity of the task is reached, resulting in 5428 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 5429 * when an activity may be reached by a path not passing through a canonical parent 5430 * activity.</p> 5431 * 5432 * <p>This method should be used when performing up navigation from within the same task 5433 * as the destination. If up navigation should cross tasks in some cases, see 5434 * {@link #shouldUpRecreateTask(Intent)}.</p> 5435 * 5436 * @param upIntent An intent representing the target destination for up navigation 5437 * 5438 * @return true if up navigation successfully reached the activity indicated by upIntent and 5439 * upIntent was delivered to it. false if an instance of the indicated activity could 5440 * not be found and this activity was simply finished normally. 5441 */ 5442 public boolean navigateUpTo(Intent upIntent) { 5443 if (mParent == null) { 5444 ComponentName destInfo = upIntent.getComponent(); 5445 if (destInfo == null) { 5446 destInfo = upIntent.resolveActivity(getPackageManager()); 5447 if (destInfo == null) { 5448 return false; 5449 } 5450 upIntent = new Intent(upIntent); 5451 upIntent.setComponent(destInfo); 5452 } 5453 int resultCode; 5454 Intent resultData; 5455 synchronized (this) { 5456 resultCode = mResultCode; 5457 resultData = mResultData; 5458 } 5459 if (resultData != null) { 5460 resultData.prepareToLeaveProcess(); 5461 } 5462 try { 5463 upIntent.prepareToLeaveProcess(); 5464 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 5465 resultCode, resultData); 5466 } catch (RemoteException e) { 5467 return false; 5468 } 5469 } else { 5470 return mParent.navigateUpToFromChild(this, upIntent); 5471 } 5472 } 5473 5474 /** 5475 * This is called when a child activity of this one calls its 5476 * {@link #navigateUpTo} method. The default implementation simply calls 5477 * navigateUpTo(upIntent) on this activity (the parent). 5478 * 5479 * @param child The activity making the call. 5480 * @param upIntent An intent representing the target destination for up navigation 5481 * 5482 * @return true if up navigation successfully reached the activity indicated by upIntent and 5483 * upIntent was delivered to it. false if an instance of the indicated activity could 5484 * not be found and this activity was simply finished normally. 5485 */ 5486 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 5487 return navigateUpTo(upIntent); 5488 } 5489 5490 /** 5491 * Obtain an {@link Intent} that will launch an explicit target activity specified by 5492 * this activity's logical parent. The logical parent is named in the application's manifest 5493 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 5494 * Activity subclasses may override this method to modify the Intent returned by 5495 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 5496 * the parent intent entirely. 5497 * 5498 * @return a new Intent targeting the defined parent of this activity or null if 5499 * there is no valid parent. 5500 */ 5501 @Nullable 5502 public Intent getParentActivityIntent() { 5503 final String parentName = mActivityInfo.parentActivityName; 5504 if (TextUtils.isEmpty(parentName)) { 5505 return null; 5506 } 5507 5508 // If the parent itself has no parent, generate a main activity intent. 5509 final ComponentName target = new ComponentName(this, parentName); 5510 try { 5511 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 5512 final String parentActivity = parentInfo.parentActivityName; 5513 final Intent parentIntent = parentActivity == null 5514 ? Intent.makeMainActivity(target) 5515 : new Intent().setComponent(target); 5516 return parentIntent; 5517 } catch (NameNotFoundException e) { 5518 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 5519 "' in manifest"); 5520 return null; 5521 } 5522 } 5523 5524 /** 5525 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5526 * android.view.View, String)} was used to start an Activity, <var>listener</var> 5527 * will be called to handle shared elements on the <i>launched</i> Activity. This requires 5528 * {@link Window#FEATURE_CONTENT_TRANSITIONS}. 5529 * 5530 * @param listener Used to manipulate shared element transitions on the launched Activity. 5531 */ 5532 public void setEnterSharedElementListener(SharedElementListener listener) { 5533 if (listener == null) { 5534 listener = SharedElementListener.NULL_LISTENER; 5535 } 5536 mEnterTransitionListener = listener; 5537 } 5538 5539 /** 5540 * When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5541 * android.view.View, String)} was used to start an Activity, <var>listener</var> 5542 * will be called to handle shared elements on the <i>launching</i> Activity. Most 5543 * calls will only come when returning from the started Activity. 5544 * This requires {@link Window#FEATURE_CONTENT_TRANSITIONS}. 5545 * 5546 * @param listener Used to manipulate shared element transitions on the launching Activity. 5547 */ 5548 public void setExitSharedElementListener(SharedElementListener listener) { 5549 if (listener == null) { 5550 listener = SharedElementListener.NULL_LISTENER; 5551 } 5552 mExitTransitionListener = listener; 5553 } 5554 5555 /** 5556 * Postpone the entering activity transition when Activity was started with 5557 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5558 * android.util.Pair[])}. 5559 * <p>This method gives the Activity the ability to delay starting the entering and 5560 * shared element transitions until all data is loaded. Until then, the Activity won't 5561 * draw into its window, leaving the window transparent. This may also cause the 5562 * returning animation to be delayed until data is ready. This method should be 5563 * called in {@link #onCreate(android.os.Bundle)} or in 5564 * {@link #onActivityReenter(int, android.content.Intent)}. 5565 * {@link #startPostponedEnterTransition()} must be called to allow the Activity to 5566 * start the transitions. If the Activity did not use 5567 * {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, 5568 * android.util.Pair[])}, then this method does nothing.</p> 5569 */ 5570 public void postponeEnterTransition() { 5571 mActivityTransitionState.postponeEnterTransition(); 5572 } 5573 5574 /** 5575 * Begin postponed transitions after {@link #postponeEnterTransition()} was called. 5576 * If postponeEnterTransition() was called, you must call startPostponedEnterTransition() 5577 * to have your Activity start drawing. 5578 */ 5579 public void startPostponedEnterTransition() { 5580 mActivityTransitionState.startPostponedEnterTransition(); 5581 } 5582 5583 // ------------------ Internal API ------------------ 5584 5585 final void setParent(Activity parent) { 5586 mParent = parent; 5587 } 5588 5589 final void attach(Context context, ActivityThread aThread, 5590 Instrumentation instr, IBinder token, int ident, 5591 Application application, Intent intent, ActivityInfo info, 5592 CharSequence title, Activity parent, String id, 5593 NonConfigurationInstances lastNonConfigurationInstances, 5594 Configuration config, IVoiceInteractor voiceInteractor) { 5595 attachBaseContext(context); 5596 5597 mFragments.attachActivity(this, mContainer, null); 5598 5599 mWindow = PolicyManager.makeNewWindow(this); 5600 mWindow.setCallback(this); 5601 mWindow.setOnWindowDismissedCallback(this); 5602 mWindow.getLayoutInflater().setPrivateFactory(this); 5603 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 5604 mWindow.setSoftInputMode(info.softInputMode); 5605 } 5606 if (info.uiOptions != 0) { 5607 mWindow.setUiOptions(info.uiOptions); 5608 } 5609 mUiThread = Thread.currentThread(); 5610 5611 mMainThread = aThread; 5612 mInstrumentation = instr; 5613 mToken = token; 5614 mIdent = ident; 5615 mApplication = application; 5616 mIntent = intent; 5617 mComponent = intent.getComponent(); 5618 mActivityInfo = info; 5619 mTitle = title; 5620 mParent = parent; 5621 mEmbeddedID = id; 5622 mLastNonConfigurationInstances = lastNonConfigurationInstances; 5623 if (voiceInteractor != null) { 5624 if (lastNonConfigurationInstances != null) { 5625 mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; 5626 } else { 5627 mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, 5628 Looper.myLooper()); 5629 } 5630 } 5631 5632 mWindow.setWindowManager( 5633 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 5634 mToken, mComponent.flattenToString(), 5635 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 5636 if (mParent != null) { 5637 mWindow.setContainer(mParent.getWindow()); 5638 } 5639 mWindowManager = mWindow.getWindowManager(); 5640 mCurrentConfig = config; 5641 } 5642 5643 /** @hide */ 5644 public final IBinder getActivityToken() { 5645 return mParent != null ? mParent.getActivityToken() : mToken; 5646 } 5647 5648 final void performCreateCommon() { 5649 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 5650 com.android.internal.R.styleable.Window_windowNoDisplay, false); 5651 mFragments.dispatchActivityCreated(); 5652 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 5653 } 5654 5655 final void performCreate(Bundle icicle) { 5656 onCreate(icicle); 5657 mActivityTransitionState.readState(icicle); 5658 performCreateCommon(); 5659 } 5660 5661 final void performCreate(Bundle icicle, PersistableBundle persistentState) { 5662 onCreate(icicle, persistentState); 5663 mActivityTransitionState.readState(icicle); 5664 performCreateCommon(); 5665 } 5666 5667 final void performStart() { 5668 mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); 5669 mFragments.noteStateNotSaved(); 5670 mCalled = false; 5671 mFragments.execPendingActions(); 5672 mInstrumentation.callActivityOnStart(this); 5673 if (!mCalled) { 5674 throw new SuperNotCalledException( 5675 "Activity " + mComponent.toShortString() + 5676 " did not call through to super.onStart()"); 5677 } 5678 mFragments.dispatchStart(); 5679 if (mAllLoaderManagers != null) { 5680 final int N = mAllLoaderManagers.size(); 5681 LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; 5682 for (int i=N-1; i>=0; i--) { 5683 loaders[i] = mAllLoaderManagers.valueAt(i); 5684 } 5685 for (int i=0; i<N; i++) { 5686 LoaderManagerImpl lm = loaders[i]; 5687 lm.finishRetain(); 5688 lm.doReportStart(); 5689 } 5690 } 5691 mActivityTransitionState.enterReady(this); 5692 } 5693 5694 final void performRestart() { 5695 mFragments.noteStateNotSaved(); 5696 5697 if (mStopped) { 5698 mStopped = false; 5699 if (mToken != null && mParent == null) { 5700 WindowManagerGlobal.getInstance().setStoppedState(mToken, false); 5701 } 5702 5703 synchronized (mManagedCursors) { 5704 final int N = mManagedCursors.size(); 5705 for (int i=0; i<N; i++) { 5706 ManagedCursor mc = mManagedCursors.get(i); 5707 if (mc.mReleased || mc.mUpdated) { 5708 if (!mc.mCursor.requery()) { 5709 if (getApplicationInfo().targetSdkVersion 5710 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5711 throw new IllegalStateException( 5712 "trying to requery an already closed cursor " 5713 + mc.mCursor); 5714 } 5715 } 5716 mc.mReleased = false; 5717 mc.mUpdated = false; 5718 } 5719 } 5720 } 5721 5722 mCalled = false; 5723 mInstrumentation.callActivityOnRestart(this); 5724 if (!mCalled) { 5725 throw new SuperNotCalledException( 5726 "Activity " + mComponent.toShortString() + 5727 " did not call through to super.onRestart()"); 5728 } 5729 performStart(); 5730 } 5731 } 5732 5733 final void performResume() { 5734 performRestart(); 5735 5736 mFragments.execPendingActions(); 5737 5738 mLastNonConfigurationInstances = null; 5739 5740 mCalled = false; 5741 // mResumed is set by the instrumentation 5742 mInstrumentation.callActivityOnResume(this); 5743 if (!mCalled) { 5744 throw new SuperNotCalledException( 5745 "Activity " + mComponent.toShortString() + 5746 " did not call through to super.onResume()"); 5747 } 5748 5749 // Now really resume, and install the current status bar and menu. 5750 mCalled = false; 5751 5752 mFragments.dispatchResume(); 5753 mFragments.execPendingActions(); 5754 5755 onPostResume(); 5756 if (!mCalled) { 5757 throw new SuperNotCalledException( 5758 "Activity " + mComponent.toShortString() + 5759 " did not call through to super.onPostResume()"); 5760 } 5761 } 5762 5763 final void performPause() { 5764 mDoReportFullyDrawn = false; 5765 mFragments.dispatchPause(); 5766 mCalled = false; 5767 onPause(); 5768 mResumed = false; 5769 if (!mCalled && getApplicationInfo().targetSdkVersion 5770 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 5771 throw new SuperNotCalledException( 5772 "Activity " + mComponent.toShortString() + 5773 " did not call through to super.onPause()"); 5774 } 5775 mResumed = false; 5776 } 5777 5778 final void performUserLeaving() { 5779 onUserInteraction(); 5780 onUserLeaveHint(); 5781 } 5782 5783 final void performStop() { 5784 mDoReportFullyDrawn = false; 5785 if (mLoadersStarted) { 5786 mLoadersStarted = false; 5787 if (mLoaderManager != null) { 5788 if (!mChangingConfigurations) { 5789 mLoaderManager.doStop(); 5790 } else { 5791 mLoaderManager.doRetain(); 5792 } 5793 } 5794 } 5795 5796 if (!mStopped) { 5797 if (mWindow != null) { 5798 mWindow.closeAllPanels(); 5799 } 5800 5801 if (mToken != null && mParent == null) { 5802 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 5803 } 5804 5805 mFragments.dispatchStop(); 5806 5807 mCalled = false; 5808 mInstrumentation.callActivityOnStop(this); 5809 if (!mCalled) { 5810 throw new SuperNotCalledException( 5811 "Activity " + mComponent.toShortString() + 5812 " did not call through to super.onStop()"); 5813 } 5814 5815 synchronized (mManagedCursors) { 5816 final int N = mManagedCursors.size(); 5817 for (int i=0; i<N; i++) { 5818 ManagedCursor mc = mManagedCursors.get(i); 5819 if (!mc.mReleased) { 5820 mc.mCursor.deactivate(); 5821 mc.mReleased = true; 5822 } 5823 } 5824 } 5825 5826 mStopped = true; 5827 } 5828 mResumed = false; 5829 } 5830 5831 final void performDestroy() { 5832 mDestroyed = true; 5833 mWindow.destroy(); 5834 mFragments.dispatchDestroy(); 5835 onDestroy(); 5836 if (mLoaderManager != null) { 5837 mLoaderManager.doDestroy(); 5838 } 5839 if (mVoiceInteractor != null) { 5840 mVoiceInteractor.detachActivity(); 5841 } 5842 } 5843 5844 /** 5845 * @hide 5846 */ 5847 public final boolean isResumed() { 5848 return mResumed; 5849 } 5850 5851 void dispatchActivityResult(String who, int requestCode, 5852 int resultCode, Intent data) { 5853 if (false) Log.v( 5854 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 5855 + ", resCode=" + resultCode + ", data=" + data); 5856 mFragments.noteStateNotSaved(); 5857 if (who == null) { 5858 onActivityResult(requestCode, resultCode, data); 5859 } else { 5860 Fragment frag = mFragments.findFragmentByWho(who); 5861 if (frag != null) { 5862 frag.onActivityResult(requestCode, resultCode, data); 5863 } 5864 } 5865 } 5866 5867 /** 5868 * Request to put this Activity in a mode where the user is locked to the 5869 * current task. 5870 * 5871 * This will prevent the user from launching other apps, going to settings, 5872 * or reaching the home screen. 5873 * 5874 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true 5875 * for this component then the app will go directly into Lock Task mode. The user 5876 * will not be able to exit this mode until {@link Activity#stopLockTask()} is called. 5877 * 5878 * If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false 5879 * then the system will prompt the user with a dialog requesting permission to enter 5880 * this mode. When entered through this method the user can exit at any time by 5881 * swiping down twice from the top of the screen. Calling stopLockTask will also 5882 * exit the mode. 5883 */ 5884 public void startLockTask() { 5885 try { 5886 ActivityManagerNative.getDefault().startLockTaskMode(mToken); 5887 } catch (RemoteException e) { 5888 } 5889 } 5890 5891 /** 5892 * Allow the user to switch away from the current task. 5893 * 5894 * Called to end the mode started by {@link Activity#startLockTask}. This 5895 * can only be called by activities that have successfully called 5896 * startLockTask previously. 5897 * 5898 * This will allow the user to exit this app and move onto other activities. 5899 */ 5900 public void stopLockTask() { 5901 try { 5902 ActivityManagerNative.getDefault().stopLockTaskMode(); 5903 } catch (RemoteException e) { 5904 } 5905 } 5906 5907 /** 5908 * Interface for informing a translucent {@link Activity} once all visible activities below it 5909 * have completed drawing. This is necessary only after an {@link Activity} has been made 5910 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 5911 * translucent again following a call to {@link 5912 * Activity#convertToTranslucent(android.app.Activity.TranslucentConversionListener, 5913 * ActivityOptions)} 5914 * 5915 * @hide 5916 */ 5917 public interface TranslucentConversionListener { 5918 /** 5919 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 5920 * below the top one have been redrawn. Following this callback it is safe to make the top 5921 * Activity translucent because the underlying Activity has been drawn. 5922 * 5923 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 5924 * occurred waiting for the Activity to complete drawing. 5925 * 5926 * @see Activity#convertFromTranslucent() 5927 * @see Activity#convertToTranslucent(TranslucentConversionListener, ActivityOptions) 5928 */ 5929 public void onTranslucentConversionComplete(boolean drawComplete); 5930 } 5931} 5932