Activity.java revision 686a805ef99b0fe53574c7110331cd91650f9999
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 com.android.internal.app.ActionBarImpl; 20import com.android.internal.policy.PolicyManager; 21 22import android.content.ComponentCallbacks2; 23import android.content.ComponentName; 24import android.content.ContentResolver; 25import android.content.Context; 26import android.content.CursorLoader; 27import android.content.IIntentSender; 28import android.content.Intent; 29import android.content.IntentSender; 30import android.content.SharedPreferences; 31import android.content.pm.ActivityInfo; 32import android.content.pm.PackageManager; 33import android.content.pm.PackageManager.NameNotFoundException; 34import android.content.res.Configuration; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.database.Cursor; 38import android.graphics.Bitmap; 39import android.graphics.Canvas; 40import android.graphics.drawable.Drawable; 41import android.media.AudioManager; 42import android.net.Uri; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.Looper; 48import android.os.Parcelable; 49import android.os.RemoteException; 50import android.os.StrictMode; 51import android.os.UserHandle; 52import android.text.Selection; 53import android.text.SpannableStringBuilder; 54import android.text.TextUtils; 55import android.text.method.TextKeyListener; 56import android.util.AttributeSet; 57import android.util.EventLog; 58import android.util.Log; 59import android.util.Slog; 60import android.util.SparseArray; 61import android.view.ActionMode; 62import android.view.ContextMenu; 63import android.view.ContextMenu.ContextMenuInfo; 64import android.view.ContextThemeWrapper; 65import android.view.KeyEvent; 66import android.view.LayoutInflater; 67import android.view.Menu; 68import android.view.MenuInflater; 69import android.view.MenuItem; 70import android.view.MotionEvent; 71import android.view.View; 72import android.view.View.OnCreateContextMenuListener; 73import android.view.ViewGroup; 74import android.view.ViewGroup.LayoutParams; 75import android.view.ViewManager; 76import android.view.Window; 77import android.view.WindowManager; 78import android.view.WindowManagerGlobal; 79import android.view.accessibility.AccessibilityEvent; 80import android.widget.AdapterView; 81 82import java.io.FileDescriptor; 83import java.io.PrintWriter; 84import java.util.ArrayList; 85import java.util.HashMap; 86 87/** 88 * An activity is a single, focused thing that the user can do. Almost all 89 * activities interact with the user, so the Activity class takes care of 90 * creating a window for you in which you can place your UI with 91 * {@link #setContentView}. While activities are often presented to the user 92 * as full-screen windows, they can also be used in other ways: as floating 93 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 94 * or embedded inside of another activity (using {@link ActivityGroup}). 95 * 96 * There are two methods almost all subclasses of Activity will implement: 97 * 98 * <ul> 99 * <li> {@link #onCreate} is where you initialize your activity. Most 100 * importantly, here you will usually call {@link #setContentView(int)} 101 * with a layout resource defining your UI, and using {@link #findViewById} 102 * to retrieve the widgets in that UI that you need to interact with 103 * programmatically. 104 * 105 * <li> {@link #onPause} is where you deal with the user leaving your 106 * activity. Most importantly, any changes made by the user should at this 107 * point be committed (usually to the 108 * {@link android.content.ContentProvider} holding the data). 109 * </ul> 110 * 111 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 112 * activity classes must have a corresponding 113 * {@link android.R.styleable#AndroidManifestActivity <activity>} 114 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 115 * 116 * <p>Topics covered here: 117 * <ol> 118 * <li><a href="#Fragments">Fragments</a> 119 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 120 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 121 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 122 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 123 * <li><a href="#Permissions">Permissions</a> 124 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 125 * </ol> 126 * 127 * <div class="special reference"> 128 * <h3>Developer Guides</h3> 129 * <p>The Activity class is an important part of an application's overall lifecycle, 130 * and the way activities are launched and put together is a fundamental 131 * part of the platform's application model. For a detailed perspective on the structure of an 132 * Android application and how activities behave, please read the 133 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 134 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 135 * developer guides.</p> 136 * 137 * <p>You can also find a detailed discussion about how to create activities in the 138 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 139 * developer guide.</p> 140 * </div> 141 * 142 * <a name="Fragments"></a> 143 * <h3>Fragments</h3> 144 * 145 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 146 * implementations can make use of the {@link Fragment} class to better 147 * modularize their code, build more sophisticated user interfaces for larger 148 * screens, and help scale their application between small and large screens. 149 * 150 * <a name="ActivityLifecycle"></a> 151 * <h3>Activity Lifecycle</h3> 152 * 153 * <p>Activities in the system are managed as an <em>activity stack</em>. 154 * When a new activity is started, it is placed on the top of the stack 155 * and becomes the running activity -- the previous activity always remains 156 * below it in the stack, and will not come to the foreground again until 157 * the new activity exits.</p> 158 * 159 * <p>An activity has essentially four states:</p> 160 * <ul> 161 * <li> If an activity in the foreground of the screen (at the top of 162 * the stack), 163 * it is <em>active</em> or <em>running</em>. </li> 164 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 165 * or transparent activity has focus on top of your activity), it 166 * is <em>paused</em>. A paused activity is completely alive (it 167 * maintains all state and member information and remains attached to 168 * the window manager), but can be killed by the system in extreme 169 * low memory situations. 170 * <li>If an activity is completely obscured by another activity, 171 * it is <em>stopped</em>. It still retains all state and member information, 172 * however, it is no longer visible to the user so its window is hidden 173 * and it will often be killed by the system when memory is needed 174 * elsewhere.</li> 175 * <li>If an activity is paused or stopped, the system can drop the activity 176 * from memory by either asking it to finish, or simply killing its 177 * process. When it is displayed again to the user, it must be 178 * completely restarted and restored to its previous state.</li> 179 * </ul> 180 * 181 * <p>The following diagram shows the important state paths of an Activity. 182 * The square rectangles represent callback methods you can implement to 183 * perform operations when the Activity moves between states. The colored 184 * ovals are major states the Activity can be in.</p> 185 * 186 * <p><img src="../../../images/activity_lifecycle.png" 187 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 188 * 189 * <p>There are three key loops you may be interested in monitoring within your 190 * activity: 191 * 192 * <ul> 193 * <li>The <b>entire lifetime</b> of an activity happens between the first call 194 * to {@link android.app.Activity#onCreate} through to a single final call 195 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 196 * of "global" state in onCreate(), and release all remaining resources in 197 * onDestroy(). For example, if it has a thread running in the background 198 * to download data from the network, it may create that thread in onCreate() 199 * and then stop the thread in onDestroy(). 200 * 201 * <li>The <b>visible lifetime</b> of an activity happens between a call to 202 * {@link android.app.Activity#onStart} until a corresponding call to 203 * {@link android.app.Activity#onStop}. During this time the user can see the 204 * activity on-screen, though it may not be in the foreground and interacting 205 * with the user. Between these two methods you can maintain resources that 206 * are needed to show the activity to the user. For example, you can register 207 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 208 * that impact your UI, and unregister it in onStop() when the user no 209 * longer sees what you are displaying. The onStart() and onStop() methods 210 * can be called multiple times, as the activity becomes visible and hidden 211 * to the user. 212 * 213 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 214 * {@link android.app.Activity#onResume} until a corresponding call to 215 * {@link android.app.Activity#onPause}. During this time the activity is 216 * in front of all other activities and interacting with the user. An activity 217 * can frequently go between the resumed and paused states -- for example when 218 * the device goes to sleep, when an activity result is delivered, when a new 219 * intent is delivered -- so the code in these methods should be fairly 220 * lightweight. 221 * </ul> 222 * 223 * <p>The entire lifecycle of an activity is defined by the following 224 * Activity methods. All of these are hooks that you can override 225 * to do appropriate work when the activity changes state. All 226 * activities will implement {@link android.app.Activity#onCreate} 227 * to do their initial setup; many will also implement 228 * {@link android.app.Activity#onPause} to commit changes to data and 229 * otherwise prepare to stop interacting with the user. You should always 230 * call up to your superclass when implementing these methods.</p> 231 * 232 * </p> 233 * <pre class="prettyprint"> 234 * public class Activity extends ApplicationContext { 235 * protected void onCreate(Bundle savedInstanceState); 236 * 237 * protected void onStart(); 238 * 239 * protected void onRestart(); 240 * 241 * protected void onResume(); 242 * 243 * protected void onPause(); 244 * 245 * protected void onStop(); 246 * 247 * protected void onDestroy(); 248 * } 249 * </pre> 250 * 251 * <p>In general the movement through an activity's lifecycle looks like 252 * this:</p> 253 * 254 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 255 * <colgroup align="left" span="3" /> 256 * <colgroup align="left" /> 257 * <colgroup align="center" /> 258 * <colgroup align="center" /> 259 * 260 * <thead> 261 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 262 * </thead> 263 * 264 * <tbody> 265 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 266 * <td>Called when the activity is first created. 267 * This is where you should do all of your normal static set up: 268 * create views, bind data to lists, etc. This method also 269 * provides you with a Bundle containing the activity's previously 270 * frozen state, if there was one. 271 * <p>Always followed by <code>onStart()</code>.</td> 272 * <td align="center">No</td> 273 * <td align="center"><code>onStart()</code></td> 274 * </tr> 275 * 276 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 277 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 278 * <td>Called after your activity has been stopped, prior to it being 279 * started again. 280 * <p>Always followed by <code>onStart()</code></td> 281 * <td align="center">No</td> 282 * <td align="center"><code>onStart()</code></td> 283 * </tr> 284 * 285 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 286 * <td>Called when the activity is becoming visible to the user. 287 * <p>Followed by <code>onResume()</code> if the activity comes 288 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 289 * <td align="center">No</td> 290 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 291 * </tr> 292 * 293 * <tr><td rowspan="2" style="border-left: none;"> </td> 294 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 295 * <td>Called when the activity will start 296 * interacting with the user. At this point your activity is at 297 * the top of the activity stack, with user input going to it. 298 * <p>Always followed by <code>onPause()</code>.</td> 299 * <td align="center">No</td> 300 * <td align="center"><code>onPause()</code></td> 301 * </tr> 302 * 303 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 304 * <td>Called when the system is about to start resuming a previous 305 * activity. This is typically used to commit unsaved changes to 306 * persistent data, stop animations and other things that may be consuming 307 * CPU, etc. Implementations of this method must be very quick because 308 * the next activity will not be resumed until this method returns. 309 * <p>Followed by either <code>onResume()</code> if the activity 310 * returns back to the front, or <code>onStop()</code> if it becomes 311 * invisible to the user.</td> 312 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 313 * <td align="center"><code>onResume()</code> or<br> 314 * <code>onStop()</code></td> 315 * </tr> 316 * 317 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 318 * <td>Called when the activity is no longer visible to the user, because 319 * another activity has been resumed and is covering this one. This 320 * may happen either because a new activity is being started, an existing 321 * one is being brought in front of this one, or this one is being 322 * destroyed. 323 * <p>Followed by either <code>onRestart()</code> if 324 * this activity is coming back to interact with the user, or 325 * <code>onDestroy()</code> if this activity is going away.</td> 326 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 327 * <td align="center"><code>onRestart()</code> or<br> 328 * <code>onDestroy()</code></td> 329 * </tr> 330 * 331 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 332 * <td>The final call you receive before your 333 * activity is destroyed. This can happen either because the 334 * activity is finishing (someone called {@link Activity#finish} on 335 * it, or because the system is temporarily destroying this 336 * instance of the activity to save space. You can distinguish 337 * between these two scenarios with the {@link 338 * Activity#isFinishing} method.</td> 339 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 340 * <td align="center"><em>nothing</em></td> 341 * </tr> 342 * </tbody> 343 * </table> 344 * 345 * <p>Note the "Killable" column in the above table -- for those methods that 346 * are marked as being killable, after that method returns the process hosting the 347 * activity may killed by the system <em>at any time</em> without another line 348 * of its code being executed. Because of this, you should use the 349 * {@link #onPause} method to write any persistent data (such as user edits) 350 * to storage. In addition, the method 351 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 352 * in such a background state, allowing you to save away any dynamic instance 353 * state in your activity into the given Bundle, to be later received in 354 * {@link #onCreate} if the activity needs to be re-created. 355 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 356 * section for more information on how the lifecycle of a process is tied 357 * to the activities it is hosting. Note that it is important to save 358 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 359 * because the latter is not part of the lifecycle callbacks, so will not 360 * be called in every situation as described in its documentation.</p> 361 * 362 * <p class="note">Be aware that these semantics will change slightly between 363 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 364 * vs. those targeting prior platforms. Starting with Honeycomb, an application 365 * is not in the killable state until its {@link #onStop} has returned. This 366 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 367 * safely called after {@link #onPause()} and allows and application to safely 368 * wait until {@link #onStop()} to save persistent state.</p> 369 * 370 * <p>For those methods that are not marked as being killable, the activity's 371 * process will not be killed by the system starting from the time the method 372 * is called and continuing after it returns. Thus an activity is in the killable 373 * state, for example, between after <code>onPause()</code> to the start of 374 * <code>onResume()</code>.</p> 375 * 376 * <a name="ConfigurationChanges"></a> 377 * <h3>Configuration Changes</h3> 378 * 379 * <p>If the configuration of the device (as defined by the 380 * {@link Configuration Resources.Configuration} class) changes, 381 * then anything displaying a user interface will need to update to match that 382 * configuration. Because Activity is the primary mechanism for interacting 383 * with the user, it includes special support for handling configuration 384 * changes.</p> 385 * 386 * <p>Unless you specify otherwise, a configuration change (such as a change 387 * in screen orientation, language, input devices, etc) will cause your 388 * current activity to be <em>destroyed</em>, going through the normal activity 389 * lifecycle process of {@link #onPause}, 390 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 391 * had been in the foreground or visible to the user, once {@link #onDestroy} is 392 * called in that instance then a new instance of the activity will be 393 * created, with whatever savedInstanceState the previous instance had generated 394 * from {@link #onSaveInstanceState}.</p> 395 * 396 * <p>This is done because any application resource, 397 * including layout files, can change based on any configuration value. Thus 398 * the only safe way to handle a configuration change is to re-retrieve all 399 * resources, including layouts, drawables, and strings. Because activities 400 * must already know how to save their state and re-create themselves from 401 * that state, this is a convenient way to have an activity restart itself 402 * with a new configuration.</p> 403 * 404 * <p>In some special cases, you may want to bypass restarting of your 405 * activity based on one or more types of configuration changes. This is 406 * done with the {@link android.R.attr#configChanges android:configChanges} 407 * attribute in its manifest. For any types of configuration changes you say 408 * that you handle there, you will receive a call to your current activity's 409 * {@link #onConfigurationChanged} method instead of being restarted. If 410 * a configuration change involves any that you do not handle, however, the 411 * activity will still be restarted and {@link #onConfigurationChanged} 412 * will not be called.</p> 413 * 414 * <a name="StartingActivities"></a> 415 * <h3>Starting Activities and Getting Results</h3> 416 * 417 * <p>The {@link android.app.Activity#startActivity} 418 * method is used to start a 419 * new activity, which will be placed at the top of the activity stack. It 420 * takes a single argument, an {@link android.content.Intent Intent}, 421 * which describes the activity 422 * to be executed.</p> 423 * 424 * <p>Sometimes you want to get a result back from an activity when it 425 * ends. For example, you may start an activity that lets the user pick 426 * a person in a list of contacts; when it ends, it returns the person 427 * that was selected. To do this, you call the 428 * {@link android.app.Activity#startActivityForResult(Intent, int)} 429 * version with a second integer parameter identifying the call. The result 430 * will come back through your {@link android.app.Activity#onActivityResult} 431 * method.</p> 432 * 433 * <p>When an activity exits, it can call 434 * {@link android.app.Activity#setResult(int)} 435 * to return data back to its parent. It must always supply a result code, 436 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 437 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 438 * return back an Intent containing any additional data it wants. All of this 439 * information appears back on the 440 * parent's <code>Activity.onActivityResult()</code>, along with the integer 441 * identifier it originally supplied.</p> 442 * 443 * <p>If a child activity fails for any reason (such as crashing), the parent 444 * activity will receive a result with the code RESULT_CANCELED.</p> 445 * 446 * <pre class="prettyprint"> 447 * public class MyActivity extends Activity { 448 * ... 449 * 450 * static final int PICK_CONTACT_REQUEST = 0; 451 * 452 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 453 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 454 * // When the user center presses, let them pick a contact. 455 * startActivityForResult( 456 * new Intent(Intent.ACTION_PICK, 457 * new Uri("content://contacts")), 458 * PICK_CONTACT_REQUEST); 459 * return true; 460 * } 461 * return false; 462 * } 463 * 464 * protected void onActivityResult(int requestCode, int resultCode, 465 * Intent data) { 466 * if (requestCode == PICK_CONTACT_REQUEST) { 467 * if (resultCode == RESULT_OK) { 468 * // A contact was picked. Here we will just display it 469 * // to the user. 470 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 471 * } 472 * } 473 * } 474 * } 475 * </pre> 476 * 477 * <a name="SavingPersistentState"></a> 478 * <h3>Saving Persistent State</h3> 479 * 480 * <p>There are generally two kinds of persistent state than an activity 481 * will deal with: shared document-like data (typically stored in a SQLite 482 * database using a {@linkplain android.content.ContentProvider content provider}) 483 * and internal state such as user preferences.</p> 484 * 485 * <p>For content provider data, we suggest that activities use a 486 * "edit in place" user model. That is, any edits a user makes are effectively 487 * made immediately without requiring an additional confirmation step. 488 * Supporting this model is generally a simple matter of following two rules:</p> 489 * 490 * <ul> 491 * <li> <p>When creating a new document, the backing database entry or file for 492 * it is created immediately. For example, if the user chooses to write 493 * a new e-mail, a new entry for that e-mail is created as soon as they 494 * start entering data, so that if they go to any other activity after 495 * that point this e-mail will now appear in the list of drafts.</p> 496 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 497 * commit to the backing content provider or file any changes the user 498 * has made. This ensures that those changes will be seen by any other 499 * activity that is about to run. You will probably want to commit 500 * your data even more aggressively at key times during your 501 * activity's lifecycle: for example before starting a new 502 * activity, before finishing your own activity, when the user 503 * switches between input fields, etc.</p> 504 * </ul> 505 * 506 * <p>This model is designed to prevent data loss when a user is navigating 507 * between activities, and allows the system to safely kill an activity (because 508 * system resources are needed somewhere else) at any time after it has been 509 * paused. Note this implies 510 * that the user pressing BACK from your activity does <em>not</em> 511 * mean "cancel" -- it means to leave the activity with its current contents 512 * saved away. Canceling edits in an activity must be provided through 513 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 514 * 515 * <p>See the {@linkplain android.content.ContentProvider content package} for 516 * more information about content providers. These are a key aspect of how 517 * different activities invoke and propagate data between themselves.</p> 518 * 519 * <p>The Activity class also provides an API for managing internal persistent state 520 * associated with an activity. This can be used, for example, to remember 521 * the user's preferred initial display in a calendar (day view or week view) 522 * or the user's default home page in a web browser.</p> 523 * 524 * <p>Activity persistent state is managed 525 * with the method {@link #getPreferences}, 526 * allowing you to retrieve and 527 * modify a set of name/value pairs associated with the activity. To use 528 * preferences that are shared across multiple application components 529 * (activities, receivers, services, providers), you can use the underlying 530 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 531 * to retrieve a preferences 532 * object stored under a specific name. 533 * (Note that it is not possible to share settings data across application 534 * packages -- for that you will need a content provider.)</p> 535 * 536 * <p>Here is an excerpt from a calendar activity that stores the user's 537 * preferred view mode in its persistent settings:</p> 538 * 539 * <pre class="prettyprint"> 540 * public class CalendarActivity extends Activity { 541 * ... 542 * 543 * static final int DAY_VIEW_MODE = 0; 544 * static final int WEEK_VIEW_MODE = 1; 545 * 546 * private SharedPreferences mPrefs; 547 * private int mCurViewMode; 548 * 549 * protected void onCreate(Bundle savedInstanceState) { 550 * super.onCreate(savedInstanceState); 551 * 552 * SharedPreferences mPrefs = getSharedPreferences(); 553 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 554 * } 555 * 556 * protected void onPause() { 557 * super.onPause(); 558 * 559 * SharedPreferences.Editor ed = mPrefs.edit(); 560 * ed.putInt("view_mode", mCurViewMode); 561 * ed.commit(); 562 * } 563 * } 564 * </pre> 565 * 566 * <a name="Permissions"></a> 567 * <h3>Permissions</h3> 568 * 569 * <p>The ability to start a particular Activity can be enforced when it is 570 * declared in its 571 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 572 * tag. By doing so, other applications will need to declare a corresponding 573 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 574 * element in their own manifest to be able to start that activity. 575 * 576 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 577 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 578 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 579 * Activity access to the specific URIs in the Intent. Access will remain 580 * until the Activity has finished (it will remain across the hosting 581 * process being killed and other temporary destruction). As of 582 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 583 * was already created and a new Intent is being delivered to 584 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 585 * to the existing ones it holds. 586 * 587 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 588 * document for more information on permissions and security in general. 589 * 590 * <a name="ProcessLifecycle"></a> 591 * <h3>Process Lifecycle</h3> 592 * 593 * <p>The Android system attempts to keep application process around for as 594 * long as possible, but eventually will need to remove old processes when 595 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 596 * Lifecycle</a>, the decision about which process to remove is intimately 597 * tied to the state of the user's interaction with it. In general, there 598 * are four states a process can be in based on the activities running in it, 599 * listed here in order of importance. The system will kill less important 600 * processes (the last ones) before it resorts to killing more important 601 * processes (the first ones). 602 * 603 * <ol> 604 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 605 * that the user is currently interacting with) is considered the most important. 606 * Its process will only be killed as a last resort, if it uses more memory 607 * than is available on the device. Generally at this point the device has 608 * reached a memory paging state, so this is required in order to keep the user 609 * interface responsive. 610 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 611 * but not in the foreground, such as one sitting behind a foreground dialog) 612 * is considered extremely important and will not be killed unless that is 613 * required to keep the foreground activity running. 614 * <li> <p>A <b>background activity</b> (an activity that is not visible to 615 * the user and has been paused) is no longer critical, so the system may 616 * safely kill its process to reclaim memory for other foreground or 617 * visible processes. If its process needs to be killed, when the user navigates 618 * back to the activity (making it visible on the screen again), its 619 * {@link #onCreate} method will be called with the savedInstanceState it had previously 620 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 621 * state as the user last left it. 622 * <li> <p>An <b>empty process</b> is one hosting no activities or other 623 * application components (such as {@link Service} or 624 * {@link android.content.BroadcastReceiver} classes). These are killed very 625 * quickly by the system as memory becomes low. For this reason, any 626 * background operation you do outside of an activity must be executed in the 627 * context of an activity BroadcastReceiver or Service to ensure that the system 628 * knows it needs to keep your process around. 629 * </ol> 630 * 631 * <p>Sometimes an Activity may need to do a long-running operation that exists 632 * independently of the activity lifecycle itself. An example may be a camera 633 * application that allows you to upload a picture to a web site. The upload 634 * may take a long time, and the application should allow the user to leave 635 * the application will it is executing. To accomplish this, your Activity 636 * should start a {@link Service} in which the upload takes place. This allows 637 * the system to properly prioritize your process (considering it to be more 638 * important than other non-visible applications) for the duration of the 639 * upload, independent of whether the original activity is paused, stopped, 640 * or finished. 641 */ 642public class Activity extends ContextThemeWrapper 643 implements LayoutInflater.Factory2, 644 Window.Callback, KeyEvent.Callback, 645 OnCreateContextMenuListener, ComponentCallbacks2 { 646 private static final String TAG = "Activity"; 647 private static final boolean DEBUG_LIFECYCLE = false; 648 649 /** Standard activity result: operation canceled. */ 650 public static final int RESULT_CANCELED = 0; 651 /** Standard activity result: operation succeeded. */ 652 public static final int RESULT_OK = -1; 653 /** Start of user-defined activity results. */ 654 public static final int RESULT_FIRST_USER = 1; 655 656 static final String FRAGMENTS_TAG = "android:fragments"; 657 658 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 659 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 660 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 661 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 662 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 663 664 private static class ManagedDialog { 665 Dialog mDialog; 666 Bundle mArgs; 667 } 668 private SparseArray<ManagedDialog> mManagedDialogs; 669 670 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 671 private Instrumentation mInstrumentation; 672 private IBinder mToken; 673 private int mIdent; 674 /*package*/ String mEmbeddedID; 675 private Application mApplication; 676 /*package*/ Intent mIntent; 677 private ComponentName mComponent; 678 /*package*/ ActivityInfo mActivityInfo; 679 /*package*/ ActivityThread mMainThread; 680 Activity mParent; 681 boolean mCalled; 682 boolean mCheckedForLoaderManager; 683 boolean mLoadersStarted; 684 /*package*/ boolean mResumed; 685 private boolean mStopped; 686 boolean mFinished; 687 boolean mStartedActivity; 688 private boolean mDestroyed; 689 /** true if the activity is going through a transient pause */ 690 /*package*/ boolean mTemporaryPause = false; 691 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 692 /*package*/ boolean mChangingConfigurations = false; 693 /*package*/ int mConfigChangeFlags; 694 /*package*/ Configuration mCurrentConfig; 695 private SearchManager mSearchManager; 696 private MenuInflater mMenuInflater; 697 698 static final class NonConfigurationInstances { 699 Object activity; 700 HashMap<String, Object> children; 701 ArrayList<Fragment> fragments; 702 HashMap<String, LoaderManagerImpl> loaders; 703 } 704 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 705 706 private Window mWindow; 707 708 private WindowManager mWindowManager; 709 /*package*/ View mDecor = null; 710 /*package*/ boolean mWindowAdded = false; 711 /*package*/ boolean mVisibleFromServer = false; 712 /*package*/ boolean mVisibleFromClient = true; 713 /*package*/ ActionBarImpl mActionBar = null; 714 private boolean mEnableDefaultActionBarUp; 715 716 private CharSequence mTitle; 717 private int mTitleColor = 0; 718 719 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 720 final FragmentContainer mContainer = new FragmentContainer() { 721 @Override 722 public View findViewById(int id) { 723 return Activity.this.findViewById(id); 724 } 725 }; 726 727 HashMap<String, LoaderManagerImpl> mAllLoaderManagers; 728 LoaderManagerImpl mLoaderManager; 729 730 private static final class ManagedCursor { 731 ManagedCursor(Cursor cursor) { 732 mCursor = cursor; 733 mReleased = false; 734 mUpdated = false; 735 } 736 737 private final Cursor mCursor; 738 private boolean mReleased; 739 private boolean mUpdated; 740 } 741 private final ArrayList<ManagedCursor> mManagedCursors = 742 new ArrayList<ManagedCursor>(); 743 744 // protected by synchronized (this) 745 int mResultCode = RESULT_CANCELED; 746 Intent mResultData = null; 747 748 private boolean mTitleReady = false; 749 750 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 751 private SpannableStringBuilder mDefaultKeySsb = null; 752 753 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 754 755 @SuppressWarnings("unused") 756 private final Object mInstanceTracker = StrictMode.trackActivity(this); 757 758 private Thread mUiThread; 759 final Handler mHandler = new Handler(); 760 761 /** Return the intent that started this activity. */ 762 public Intent getIntent() { 763 return mIntent; 764 } 765 766 /** 767 * Change the intent returned by {@link #getIntent}. This holds a 768 * reference to the given intent; it does not copy it. Often used in 769 * conjunction with {@link #onNewIntent}. 770 * 771 * @param newIntent The new Intent object to return from getIntent 772 * 773 * @see #getIntent 774 * @see #onNewIntent 775 */ 776 public void setIntent(Intent newIntent) { 777 mIntent = newIntent; 778 } 779 780 /** Return the application that owns this activity. */ 781 public final Application getApplication() { 782 return mApplication; 783 } 784 785 /** Is this activity embedded inside of another activity? */ 786 public final boolean isChild() { 787 return mParent != null; 788 } 789 790 /** Return the parent activity if this view is an embedded child. */ 791 public final Activity getParent() { 792 return mParent; 793 } 794 795 /** Retrieve the window manager for showing custom windows. */ 796 public WindowManager getWindowManager() { 797 return mWindowManager; 798 } 799 800 /** 801 * Retrieve the current {@link android.view.Window} for the activity. 802 * This can be used to directly access parts of the Window API that 803 * are not available through Activity/Screen. 804 * 805 * @return Window The current window, or null if the activity is not 806 * visual. 807 */ 808 public Window getWindow() { 809 return mWindow; 810 } 811 812 /** 813 * Return the LoaderManager for this fragment, creating it if needed. 814 */ 815 public LoaderManager getLoaderManager() { 816 if (mLoaderManager != null) { 817 return mLoaderManager; 818 } 819 mCheckedForLoaderManager = true; 820 mLoaderManager = getLoaderManager(null, mLoadersStarted, true); 821 return mLoaderManager; 822 } 823 824 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) { 825 if (mAllLoaderManagers == null) { 826 mAllLoaderManagers = new HashMap<String, LoaderManagerImpl>(); 827 } 828 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 829 if (lm == null) { 830 if (create) { 831 lm = new LoaderManagerImpl(who, this, started); 832 mAllLoaderManagers.put(who, lm); 833 } 834 } else { 835 lm.updateActivity(this); 836 } 837 return lm; 838 } 839 840 /** 841 * Calls {@link android.view.Window#getCurrentFocus} on the 842 * Window of this Activity to return the currently focused view. 843 * 844 * @return View The current View with focus or null. 845 * 846 * @see #getWindow 847 * @see android.view.Window#getCurrentFocus 848 */ 849 public View getCurrentFocus() { 850 return mWindow != null ? mWindow.getCurrentFocus() : null; 851 } 852 853 /** 854 * Called when the activity is starting. This is where most initialization 855 * should go: calling {@link #setContentView(int)} to inflate the 856 * activity's UI, using {@link #findViewById} to programmatically interact 857 * with widgets in the UI, calling 858 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 859 * cursors for data being displayed, etc. 860 * 861 * <p>You can call {@link #finish} from within this function, in 862 * which case onDestroy() will be immediately called without any of the rest 863 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 864 * {@link #onPause}, etc) executing. 865 * 866 * <p><em>Derived classes must call through to the super class's 867 * implementation of this method. If they do not, an exception will be 868 * thrown.</em></p> 869 * 870 * @param savedInstanceState If the activity is being re-initialized after 871 * previously being shut down then this Bundle contains the data it most 872 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 873 * 874 * @see #onStart 875 * @see #onSaveInstanceState 876 * @see #onRestoreInstanceState 877 * @see #onPostCreate 878 */ 879 protected void onCreate(Bundle savedInstanceState) { 880 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 881 if (mLastNonConfigurationInstances != null) { 882 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 883 } 884 if (mActivityInfo.parentActivityName != null) { 885 if (mActionBar == null) { 886 mEnableDefaultActionBarUp = true; 887 } else { 888 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 889 } 890 } 891 if (savedInstanceState != null) { 892 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 893 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 894 ? mLastNonConfigurationInstances.fragments : null); 895 } 896 mFragments.dispatchCreate(); 897 getApplication().dispatchActivityCreated(this, savedInstanceState); 898 mCalled = true; 899 } 900 901 /** 902 * The hook for {@link ActivityThread} to restore the state of this activity. 903 * 904 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 905 * {@link #restoreManagedDialogs(android.os.Bundle)}. 906 * 907 * @param savedInstanceState contains the saved state 908 */ 909 final void performRestoreInstanceState(Bundle savedInstanceState) { 910 onRestoreInstanceState(savedInstanceState); 911 restoreManagedDialogs(savedInstanceState); 912 } 913 914 /** 915 * This method is called after {@link #onStart} when the activity is 916 * being re-initialized from a previously saved state, given here in 917 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 918 * to restore their state, but it is sometimes convenient to do it here 919 * after all of the initialization has been done or to allow subclasses to 920 * decide whether to use your default implementation. The default 921 * implementation of this method performs a restore of any view state that 922 * had previously been frozen by {@link #onSaveInstanceState}. 923 * 924 * <p>This method is called between {@link #onStart} and 925 * {@link #onPostCreate}. 926 * 927 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 928 * 929 * @see #onCreate 930 * @see #onPostCreate 931 * @see #onResume 932 * @see #onSaveInstanceState 933 */ 934 protected void onRestoreInstanceState(Bundle savedInstanceState) { 935 if (mWindow != null) { 936 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 937 if (windowState != null) { 938 mWindow.restoreHierarchyState(windowState); 939 } 940 } 941 } 942 943 /** 944 * Restore the state of any saved managed dialogs. 945 * 946 * @param savedInstanceState The bundle to restore from. 947 */ 948 private void restoreManagedDialogs(Bundle savedInstanceState) { 949 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 950 if (b == null) { 951 return; 952 } 953 954 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 955 final int numDialogs = ids.length; 956 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 957 for (int i = 0; i < numDialogs; i++) { 958 final Integer dialogId = ids[i]; 959 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 960 if (dialogState != null) { 961 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 962 // so tell createDialog() not to do it, otherwise we get an exception 963 final ManagedDialog md = new ManagedDialog(); 964 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 965 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 966 if (md.mDialog != null) { 967 mManagedDialogs.put(dialogId, md); 968 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 969 md.mDialog.onRestoreInstanceState(dialogState); 970 } 971 } 972 } 973 } 974 975 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 976 final Dialog dialog = onCreateDialog(dialogId, args); 977 if (dialog == null) { 978 return null; 979 } 980 dialog.dispatchOnCreate(state); 981 return dialog; 982 } 983 984 private static String savedDialogKeyFor(int key) { 985 return SAVED_DIALOG_KEY_PREFIX + key; 986 } 987 988 private static String savedDialogArgsKeyFor(int key) { 989 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 990 } 991 992 /** 993 * Called when activity start-up is complete (after {@link #onStart} 994 * and {@link #onRestoreInstanceState} have been called). Applications will 995 * generally not implement this method; it is intended for system 996 * classes to do final initialization after application code has run. 997 * 998 * <p><em>Derived classes must call through to the super class's 999 * implementation of this method. If they do not, an exception will be 1000 * thrown.</em></p> 1001 * 1002 * @param savedInstanceState If the activity is being re-initialized after 1003 * previously being shut down then this Bundle contains the data it most 1004 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1005 * @see #onCreate 1006 */ 1007 protected void onPostCreate(Bundle savedInstanceState) { 1008 if (!isChild()) { 1009 mTitleReady = true; 1010 onTitleChanged(getTitle(), getTitleColor()); 1011 } 1012 mCalled = true; 1013 } 1014 1015 /** 1016 * Called after {@link #onCreate} — or after {@link #onRestart} when 1017 * the activity had been stopped, but is now again being displayed to the 1018 * user. It will be followed by {@link #onResume}. 1019 * 1020 * <p><em>Derived classes must call through to the super class's 1021 * implementation of this method. If they do not, an exception will be 1022 * thrown.</em></p> 1023 * 1024 * @see #onCreate 1025 * @see #onStop 1026 * @see #onResume 1027 */ 1028 protected void onStart() { 1029 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1030 mCalled = true; 1031 1032 if (!mLoadersStarted) { 1033 mLoadersStarted = true; 1034 if (mLoaderManager != null) { 1035 mLoaderManager.doStart(); 1036 } else if (!mCheckedForLoaderManager) { 1037 mLoaderManager = getLoaderManager(null, mLoadersStarted, false); 1038 } 1039 mCheckedForLoaderManager = true; 1040 } 1041 1042 getApplication().dispatchActivityStarted(this); 1043 } 1044 1045 /** 1046 * Called after {@link #onStop} when the current activity is being 1047 * re-displayed to the user (the user has navigated back to it). It will 1048 * be followed by {@link #onStart} and then {@link #onResume}. 1049 * 1050 * <p>For activities that are using raw {@link Cursor} objects (instead of 1051 * creating them through 1052 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1053 * this is usually the place 1054 * where the cursor should be requeried (because you had deactivated it in 1055 * {@link #onStop}. 1056 * 1057 * <p><em>Derived classes must call through to the super class's 1058 * implementation of this method. If they do not, an exception will be 1059 * thrown.</em></p> 1060 * 1061 * @see #onStop 1062 * @see #onStart 1063 * @see #onResume 1064 */ 1065 protected void onRestart() { 1066 mCalled = true; 1067 } 1068 1069 /** 1070 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1071 * {@link #onPause}, for your activity to start interacting with the user. 1072 * This is a good place to begin animations, open exclusive-access devices 1073 * (such as the camera), etc. 1074 * 1075 * <p>Keep in mind that onResume is not the best indicator that your activity 1076 * is visible to the user; a system window such as the keyguard may be in 1077 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1078 * activity is visible to the user (for example, to resume a game). 1079 * 1080 * <p><em>Derived classes must call through to the super class's 1081 * implementation of this method. If they do not, an exception will be 1082 * thrown.</em></p> 1083 * 1084 * @see #onRestoreInstanceState 1085 * @see #onRestart 1086 * @see #onPostResume 1087 * @see #onPause 1088 */ 1089 protected void onResume() { 1090 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1091 getApplication().dispatchActivityResumed(this); 1092 mCalled = true; 1093 } 1094 1095 /** 1096 * Called when activity resume is complete (after {@link #onResume} has 1097 * been called). Applications will generally not implement this method; 1098 * it is intended for system classes to do final setup after application 1099 * resume code has run. 1100 * 1101 * <p><em>Derived classes must call through to the super class's 1102 * implementation of this method. If they do not, an exception will be 1103 * thrown.</em></p> 1104 * 1105 * @see #onResume 1106 */ 1107 protected void onPostResume() { 1108 final Window win = getWindow(); 1109 if (win != null) win.makeActive(); 1110 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1111 mCalled = true; 1112 } 1113 1114 /** 1115 * This is called for activities that set launchMode to "singleTop" in 1116 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1117 * flag when calling {@link #startActivity}. In either case, when the 1118 * activity is re-launched while at the top of the activity stack instead 1119 * of a new instance of the activity being started, onNewIntent() will be 1120 * called on the existing instance with the Intent that was used to 1121 * re-launch it. 1122 * 1123 * <p>An activity will always be paused before receiving a new intent, so 1124 * you can count on {@link #onResume} being called after this method. 1125 * 1126 * <p>Note that {@link #getIntent} still returns the original Intent. You 1127 * can use {@link #setIntent} to update it to this new Intent. 1128 * 1129 * @param intent The new intent that was started for the activity. 1130 * 1131 * @see #getIntent 1132 * @see #setIntent 1133 * @see #onResume 1134 */ 1135 protected void onNewIntent(Intent intent) { 1136 } 1137 1138 /** 1139 * The hook for {@link ActivityThread} to save the state of this activity. 1140 * 1141 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1142 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1143 * 1144 * @param outState The bundle to save the state to. 1145 */ 1146 final void performSaveInstanceState(Bundle outState) { 1147 onSaveInstanceState(outState); 1148 saveManagedDialogs(outState); 1149 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1150 } 1151 1152 /** 1153 * Called to retrieve per-instance state from an activity before being killed 1154 * so that the state can be restored in {@link #onCreate} or 1155 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1156 * will be passed to both). 1157 * 1158 * <p>This method is called before an activity may be killed so that when it 1159 * comes back some time in the future it can restore its state. For example, 1160 * if activity B is launched in front of activity A, and at some point activity 1161 * A is killed to reclaim resources, activity A will have a chance to save the 1162 * current state of its user interface via this method so that when the user 1163 * returns to activity A, the state of the user interface can be restored 1164 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1165 * 1166 * <p>Do not confuse this method with activity lifecycle callbacks such as 1167 * {@link #onPause}, which is always called when an activity is being placed 1168 * in the background or on its way to destruction, or {@link #onStop} which 1169 * is called before destruction. One example of when {@link #onPause} and 1170 * {@link #onStop} is called and not this method is when a user navigates back 1171 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1172 * on B because that particular instance will never be restored, so the 1173 * system avoids calling it. An example when {@link #onPause} is called and 1174 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1175 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1176 * killed during the lifetime of B since the state of the user interface of 1177 * A will stay intact. 1178 * 1179 * <p>The default implementation takes care of most of the UI per-instance 1180 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1181 * view in the hierarchy that has an id, and by saving the id of the currently 1182 * focused view (all of which is restored by the default implementation of 1183 * {@link #onRestoreInstanceState}). If you override this method to save additional 1184 * information not captured by each individual view, you will likely want to 1185 * call through to the default implementation, otherwise be prepared to save 1186 * all of the state of each view yourself. 1187 * 1188 * <p>If called, this method will occur before {@link #onStop}. There are 1189 * no guarantees about whether it will occur before or after {@link #onPause}. 1190 * 1191 * @param outState Bundle in which to place your saved state. 1192 * 1193 * @see #onCreate 1194 * @see #onRestoreInstanceState 1195 * @see #onPause 1196 */ 1197 protected void onSaveInstanceState(Bundle outState) { 1198 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1199 Parcelable p = mFragments.saveAllState(); 1200 if (p != null) { 1201 outState.putParcelable(FRAGMENTS_TAG, p); 1202 } 1203 getApplication().dispatchActivitySaveInstanceState(this, outState); 1204 } 1205 1206 /** 1207 * Save the state of any managed dialogs. 1208 * 1209 * @param outState place to store the saved state. 1210 */ 1211 private void saveManagedDialogs(Bundle outState) { 1212 if (mManagedDialogs == null) { 1213 return; 1214 } 1215 1216 final int numDialogs = mManagedDialogs.size(); 1217 if (numDialogs == 0) { 1218 return; 1219 } 1220 1221 Bundle dialogState = new Bundle(); 1222 1223 int[] ids = new int[mManagedDialogs.size()]; 1224 1225 // save each dialog's bundle, gather the ids 1226 for (int i = 0; i < numDialogs; i++) { 1227 final int key = mManagedDialogs.keyAt(i); 1228 ids[i] = key; 1229 final ManagedDialog md = mManagedDialogs.valueAt(i); 1230 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1231 if (md.mArgs != null) { 1232 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1233 } 1234 } 1235 1236 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1237 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1238 } 1239 1240 1241 /** 1242 * Called as part of the activity lifecycle when an activity is going into 1243 * the background, but has not (yet) been killed. The counterpart to 1244 * {@link #onResume}. 1245 * 1246 * <p>When activity B is launched in front of activity A, this callback will 1247 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1248 * so be sure to not do anything lengthy here. 1249 * 1250 * <p>This callback is mostly used for saving any persistent state the 1251 * activity is editing, to present a "edit in place" model to the user and 1252 * making sure nothing is lost if there are not enough resources to start 1253 * the new activity without first killing this one. This is also a good 1254 * place to do things like stop animations and other things that consume a 1255 * noticeable amount of CPU in order to make the switch to the next activity 1256 * as fast as possible, or to close resources that are exclusive access 1257 * such as the camera. 1258 * 1259 * <p>In situations where the system needs more memory it may kill paused 1260 * processes to reclaim resources. Because of this, you should be sure 1261 * that all of your state is saved by the time you return from 1262 * this function. In general {@link #onSaveInstanceState} is used to save 1263 * per-instance state in the activity and this method is used to store 1264 * global persistent data (in content providers, files, etc.) 1265 * 1266 * <p>After receiving this call you will usually receive a following call 1267 * to {@link #onStop} (after the next activity has been resumed and 1268 * displayed), however in some cases there will be a direct call back to 1269 * {@link #onResume} without going through the stopped state. 1270 * 1271 * <p><em>Derived classes must call through to the super class's 1272 * implementation of this method. If they do not, an exception will be 1273 * thrown.</em></p> 1274 * 1275 * @see #onResume 1276 * @see #onSaveInstanceState 1277 * @see #onStop 1278 */ 1279 protected void onPause() { 1280 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1281 getApplication().dispatchActivityPaused(this); 1282 mCalled = true; 1283 } 1284 1285 /** 1286 * Called as part of the activity lifecycle when an activity is about to go 1287 * into the background as the result of user choice. For example, when the 1288 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1289 * when an incoming phone call causes the in-call Activity to be automatically 1290 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1291 * the activity being interrupted. In cases when it is invoked, this method 1292 * is called right before the activity's {@link #onPause} callback. 1293 * 1294 * <p>This callback and {@link #onUserInteraction} are intended to help 1295 * activities manage status bar notifications intelligently; specifically, 1296 * for helping activities determine the proper time to cancel a notfication. 1297 * 1298 * @see #onUserInteraction() 1299 */ 1300 protected void onUserLeaveHint() { 1301 } 1302 1303 /** 1304 * Generate a new thumbnail for this activity. This method is called before 1305 * pausing the activity, and should draw into <var>outBitmap</var> the 1306 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1307 * can use the given <var>canvas</var>, which is configured to draw into the 1308 * bitmap, for rendering if desired. 1309 * 1310 * <p>The default implementation returns fails and does not draw a thumbnail; 1311 * this will result in the platform creating its own thumbnail if needed. 1312 * 1313 * @param outBitmap The bitmap to contain the thumbnail. 1314 * @param canvas Can be used to render into the bitmap. 1315 * 1316 * @return Return true if you have drawn into the bitmap; otherwise after 1317 * you return it will be filled with a default thumbnail. 1318 * 1319 * @see #onCreateDescription 1320 * @see #onSaveInstanceState 1321 * @see #onPause 1322 */ 1323 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1324 return false; 1325 } 1326 1327 /** 1328 * Generate a new description for this activity. This method is called 1329 * before pausing the activity and can, if desired, return some textual 1330 * description of its current state to be displayed to the user. 1331 * 1332 * <p>The default implementation returns null, which will cause you to 1333 * inherit the description from the previous activity. If all activities 1334 * return null, generally the label of the top activity will be used as the 1335 * description. 1336 * 1337 * @return A description of what the user is doing. It should be short and 1338 * sweet (only a few words). 1339 * 1340 * @see #onCreateThumbnail 1341 * @see #onSaveInstanceState 1342 * @see #onPause 1343 */ 1344 public CharSequence onCreateDescription() { 1345 return null; 1346 } 1347 1348 /** 1349 * Called when you are no longer visible to the user. You will next 1350 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1351 * depending on later user activity. 1352 * 1353 * <p>Note that this method may never be called, in low memory situations 1354 * where the system does not have enough memory to keep your activity's 1355 * process running after its {@link #onPause} method is called. 1356 * 1357 * <p><em>Derived classes must call through to the super class's 1358 * implementation of this method. If they do not, an exception will be 1359 * thrown.</em></p> 1360 * 1361 * @see #onRestart 1362 * @see #onResume 1363 * @see #onSaveInstanceState 1364 * @see #onDestroy 1365 */ 1366 protected void onStop() { 1367 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1368 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1369 getApplication().dispatchActivityStopped(this); 1370 mCalled = true; 1371 } 1372 1373 /** 1374 * Perform any final cleanup before an activity is destroyed. This can 1375 * happen either because the activity is finishing (someone called 1376 * {@link #finish} on it, or because the system is temporarily destroying 1377 * this instance of the activity to save space. You can distinguish 1378 * between these two scenarios with the {@link #isFinishing} method. 1379 * 1380 * <p><em>Note: do not count on this method being called as a place for 1381 * saving data! For example, if an activity is editing data in a content 1382 * provider, those edits should be committed in either {@link #onPause} or 1383 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1384 * free resources like threads that are associated with an activity, so 1385 * that a destroyed activity does not leave such things around while the 1386 * rest of its application is still running. There are situations where 1387 * the system will simply kill the activity's hosting process without 1388 * calling this method (or any others) in it, so it should not be used to 1389 * do things that are intended to remain around after the process goes 1390 * away. 1391 * 1392 * <p><em>Derived classes must call through to the super class's 1393 * implementation of this method. If they do not, an exception will be 1394 * thrown.</em></p> 1395 * 1396 * @see #onPause 1397 * @see #onStop 1398 * @see #finish 1399 * @see #isFinishing 1400 */ 1401 protected void onDestroy() { 1402 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1403 mCalled = true; 1404 1405 // dismiss any dialogs we are managing. 1406 if (mManagedDialogs != null) { 1407 final int numDialogs = mManagedDialogs.size(); 1408 for (int i = 0; i < numDialogs; i++) { 1409 final ManagedDialog md = mManagedDialogs.valueAt(i); 1410 if (md.mDialog.isShowing()) { 1411 md.mDialog.dismiss(); 1412 } 1413 } 1414 mManagedDialogs = null; 1415 } 1416 1417 // close any cursors we are managing. 1418 synchronized (mManagedCursors) { 1419 int numCursors = mManagedCursors.size(); 1420 for (int i = 0; i < numCursors; i++) { 1421 ManagedCursor c = mManagedCursors.get(i); 1422 if (c != null) { 1423 c.mCursor.close(); 1424 } 1425 } 1426 mManagedCursors.clear(); 1427 } 1428 1429 // Close any open search dialog 1430 if (mSearchManager != null) { 1431 mSearchManager.stopSearch(); 1432 } 1433 1434 getApplication().dispatchActivityDestroyed(this); 1435 } 1436 1437 /** 1438 * Called by the system when the device configuration changes while your 1439 * activity is running. Note that this will <em>only</em> be called if 1440 * you have selected configurations you would like to handle with the 1441 * {@link android.R.attr#configChanges} attribute in your manifest. If 1442 * any configuration change occurs that is not selected to be reported 1443 * by that attribute, then instead of reporting it the system will stop 1444 * and restart the activity (to have it launched with the new 1445 * configuration). 1446 * 1447 * <p>At the time that this function has been called, your Resources 1448 * object will have been updated to return resource values matching the 1449 * new configuration. 1450 * 1451 * @param newConfig The new device configuration. 1452 */ 1453 public void onConfigurationChanged(Configuration newConfig) { 1454 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1455 mCalled = true; 1456 1457 mFragments.dispatchConfigurationChanged(newConfig); 1458 1459 if (mWindow != null) { 1460 // Pass the configuration changed event to the window 1461 mWindow.onConfigurationChanged(newConfig); 1462 } 1463 1464 if (mActionBar != null) { 1465 // Do this last; the action bar will need to access 1466 // view changes from above. 1467 mActionBar.onConfigurationChanged(newConfig); 1468 } 1469 } 1470 1471 /** 1472 * If this activity is being destroyed because it can not handle a 1473 * configuration parameter being changed (and thus its 1474 * {@link #onConfigurationChanged(Configuration)} method is 1475 * <em>not</em> being called), then you can use this method to discover 1476 * the set of changes that have occurred while in the process of being 1477 * destroyed. Note that there is no guarantee that these will be 1478 * accurate (other changes could have happened at any time), so you should 1479 * only use this as an optimization hint. 1480 * 1481 * @return Returns a bit field of the configuration parameters that are 1482 * changing, as defined by the {@link android.content.res.Configuration} 1483 * class. 1484 */ 1485 public int getChangingConfigurations() { 1486 return mConfigChangeFlags; 1487 } 1488 1489 /** 1490 * Retrieve the non-configuration instance data that was previously 1491 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1492 * be available from the initial {@link #onCreate} and 1493 * {@link #onStart} calls to the new instance, allowing you to extract 1494 * any useful dynamic state from the previous instance. 1495 * 1496 * <p>Note that the data you retrieve here should <em>only</em> be used 1497 * as an optimization for handling configuration changes. You should always 1498 * be able to handle getting a null pointer back, and an activity must 1499 * still be able to restore itself to its previous state (through the 1500 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1501 * function returns null. 1502 * 1503 * @return Returns the object previously returned by 1504 * {@link #onRetainNonConfigurationInstance()}. 1505 * 1506 * @deprecated Use the new {@link Fragment} API 1507 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1508 * available on older platforms through the Android compatibility package. 1509 */ 1510 @Deprecated 1511 public Object getLastNonConfigurationInstance() { 1512 return mLastNonConfigurationInstances != null 1513 ? mLastNonConfigurationInstances.activity : null; 1514 } 1515 1516 /** 1517 * Called by the system, as part of destroying an 1518 * activity due to a configuration change, when it is known that a new 1519 * instance will immediately be created for the new configuration. You 1520 * can return any object you like here, including the activity instance 1521 * itself, which can later be retrieved by calling 1522 * {@link #getLastNonConfigurationInstance()} in the new activity 1523 * instance. 1524 * 1525 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1526 * or later, consider instead using a {@link Fragment} with 1527 * {@link Fragment#setRetainInstance(boolean) 1528 * Fragment.setRetainInstance(boolean}.</em> 1529 * 1530 * <p>This function is called purely as an optimization, and you must 1531 * not rely on it being called. When it is called, a number of guarantees 1532 * will be made to help optimize configuration switching: 1533 * <ul> 1534 * <li> The function will be called between {@link #onStop} and 1535 * {@link #onDestroy}. 1536 * <li> A new instance of the activity will <em>always</em> be immediately 1537 * created after this one's {@link #onDestroy()} is called. In particular, 1538 * <em>no</em> messages will be dispatched during this time (when the returned 1539 * object does not have an activity to be associated with). 1540 * <li> The object you return here will <em>always</em> be available from 1541 * the {@link #getLastNonConfigurationInstance()} method of the following 1542 * activity instance as described there. 1543 * </ul> 1544 * 1545 * <p>These guarantees are designed so that an activity can use this API 1546 * to propagate extensive state from the old to new activity instance, from 1547 * loaded bitmaps, to network connections, to evenly actively running 1548 * threads. Note that you should <em>not</em> propagate any data that 1549 * may change based on the configuration, including any data loaded from 1550 * resources such as strings, layouts, or drawables. 1551 * 1552 * <p>The guarantee of no message handling during the switch to the next 1553 * activity simplifies use with active objects. For example if your retained 1554 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1555 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1556 * not be called from the call here until you execute the next instance's 1557 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1558 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1559 * running in a separate thread.) 1560 * 1561 * @return Return any Object holding the desired state to propagate to the 1562 * next activity instance. 1563 * 1564 * @deprecated Use the new {@link Fragment} API 1565 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1566 * available on older platforms through the Android compatibility package. 1567 */ 1568 public Object onRetainNonConfigurationInstance() { 1569 return null; 1570 } 1571 1572 /** 1573 * Retrieve the non-configuration instance data that was previously 1574 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1575 * be available from the initial {@link #onCreate} and 1576 * {@link #onStart} calls to the new instance, allowing you to extract 1577 * any useful dynamic state from the previous instance. 1578 * 1579 * <p>Note that the data you retrieve here should <em>only</em> be used 1580 * as an optimization for handling configuration changes. You should always 1581 * be able to handle getting a null pointer back, and an activity must 1582 * still be able to restore itself to its previous state (through the 1583 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1584 * function returns null. 1585 * 1586 * @return Returns the object previously returned by 1587 * {@link #onRetainNonConfigurationChildInstances()} 1588 */ 1589 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1590 return mLastNonConfigurationInstances != null 1591 ? mLastNonConfigurationInstances.children : null; 1592 } 1593 1594 /** 1595 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1596 * it should return either a mapping from child activity id strings to arbitrary objects, 1597 * or null. This method is intended to be used by Activity framework subclasses that control a 1598 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1599 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1600 */ 1601 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1602 return null; 1603 } 1604 1605 NonConfigurationInstances retainNonConfigurationInstances() { 1606 Object activity = onRetainNonConfigurationInstance(); 1607 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1608 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1609 boolean retainLoaders = false; 1610 if (mAllLoaderManagers != null) { 1611 // prune out any loader managers that were already stopped and so 1612 // have nothing useful to retain. 1613 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()]; 1614 mAllLoaderManagers.values().toArray(loaders); 1615 if (loaders != null) { 1616 for (int i=0; i<loaders.length; i++) { 1617 LoaderManagerImpl lm = loaders[i]; 1618 if (lm.mRetaining) { 1619 retainLoaders = true; 1620 } else { 1621 lm.doDestroy(); 1622 mAllLoaderManagers.remove(lm.mWho); 1623 } 1624 } 1625 } 1626 } 1627 if (activity == null && children == null && fragments == null && !retainLoaders) { 1628 return null; 1629 } 1630 1631 NonConfigurationInstances nci = new NonConfigurationInstances(); 1632 nci.activity = activity; 1633 nci.children = children; 1634 nci.fragments = fragments; 1635 nci.loaders = mAllLoaderManagers; 1636 return nci; 1637 } 1638 1639 public void onLowMemory() { 1640 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1641 mCalled = true; 1642 mFragments.dispatchLowMemory(); 1643 } 1644 1645 public void onTrimMemory(int level) { 1646 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1647 mCalled = true; 1648 mFragments.dispatchTrimMemory(level); 1649 } 1650 1651 /** 1652 * Return the FragmentManager for interacting with fragments associated 1653 * with this activity. 1654 */ 1655 public FragmentManager getFragmentManager() { 1656 return mFragments; 1657 } 1658 1659 void invalidateFragment(String who) { 1660 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1661 if (mAllLoaderManagers != null) { 1662 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 1663 if (lm != null && !lm.mRetaining) { 1664 lm.doDestroy(); 1665 mAllLoaderManagers.remove(who); 1666 } 1667 } 1668 } 1669 1670 /** 1671 * Called when a Fragment is being attached to this activity, immediately 1672 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1673 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1674 */ 1675 public void onAttachFragment(Fragment fragment) { 1676 } 1677 1678 /** 1679 * Wrapper around 1680 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1681 * that gives the resulting {@link Cursor} to call 1682 * {@link #startManagingCursor} so that the activity will manage its 1683 * lifecycle for you. 1684 * 1685 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1686 * or later, consider instead using {@link LoaderManager} instead, available 1687 * via {@link #getLoaderManager()}.</em> 1688 * 1689 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1690 * this method, because the activity will do that for you at the appropriate time. However, if 1691 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1692 * not</em> automatically close the cursor and, in that case, you must call 1693 * {@link Cursor#close()}.</p> 1694 * 1695 * @param uri The URI of the content provider to query. 1696 * @param projection List of columns to return. 1697 * @param selection SQL WHERE clause. 1698 * @param sortOrder SQL ORDER BY clause. 1699 * 1700 * @return The Cursor that was returned by query(). 1701 * 1702 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1703 * @see #startManagingCursor 1704 * @hide 1705 * 1706 * @deprecated Use {@link CursorLoader} instead. 1707 */ 1708 @Deprecated 1709 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1710 String sortOrder) { 1711 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1712 if (c != null) { 1713 startManagingCursor(c); 1714 } 1715 return c; 1716 } 1717 1718 /** 1719 * Wrapper around 1720 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1721 * that gives the resulting {@link Cursor} to call 1722 * {@link #startManagingCursor} so that the activity will manage its 1723 * lifecycle for you. 1724 * 1725 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1726 * or later, consider instead using {@link LoaderManager} instead, available 1727 * via {@link #getLoaderManager()}.</em> 1728 * 1729 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1730 * this method, because the activity will do that for you at the appropriate time. However, if 1731 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1732 * not</em> automatically close the cursor and, in that case, you must call 1733 * {@link Cursor#close()}.</p> 1734 * 1735 * @param uri The URI of the content provider to query. 1736 * @param projection List of columns to return. 1737 * @param selection SQL WHERE clause. 1738 * @param selectionArgs The arguments to selection, if any ?s are pesent 1739 * @param sortOrder SQL ORDER BY clause. 1740 * 1741 * @return The Cursor that was returned by query(). 1742 * 1743 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1744 * @see #startManagingCursor 1745 * 1746 * @deprecated Use {@link CursorLoader} instead. 1747 */ 1748 @Deprecated 1749 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1750 String[] selectionArgs, String sortOrder) { 1751 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1752 if (c != null) { 1753 startManagingCursor(c); 1754 } 1755 return c; 1756 } 1757 1758 /** 1759 * This method allows the activity to take care of managing the given 1760 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1761 * That is, when the activity is stopped it will automatically call 1762 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1763 * it will call {@link Cursor#requery} for you. When the activity is 1764 * destroyed, all managed Cursors will be closed automatically. 1765 * 1766 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1767 * or later, consider instead using {@link LoaderManager} instead, available 1768 * via {@link #getLoaderManager()}.</em> 1769 * 1770 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1771 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1772 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 1773 * <em>will not</em> automatically close the cursor and, in that case, you must call 1774 * {@link Cursor#close()}.</p> 1775 * 1776 * @param c The Cursor to be managed. 1777 * 1778 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1779 * @see #stopManagingCursor 1780 * 1781 * @deprecated Use the new {@link android.content.CursorLoader} class with 1782 * {@link LoaderManager} instead; this is also 1783 * available on older platforms through the Android compatibility package. 1784 */ 1785 @Deprecated 1786 public void startManagingCursor(Cursor c) { 1787 synchronized (mManagedCursors) { 1788 mManagedCursors.add(new ManagedCursor(c)); 1789 } 1790 } 1791 1792 /** 1793 * Given a Cursor that was previously given to 1794 * {@link #startManagingCursor}, stop the activity's management of that 1795 * cursor. 1796 * 1797 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 1798 * the system <em>will not</em> automatically close the cursor and you must call 1799 * {@link Cursor#close()}.</p> 1800 * 1801 * @param c The Cursor that was being managed. 1802 * 1803 * @see #startManagingCursor 1804 * 1805 * @deprecated Use the new {@link android.content.CursorLoader} class with 1806 * {@link LoaderManager} instead; this is also 1807 * available on older platforms through the Android compatibility package. 1808 */ 1809 @Deprecated 1810 public void stopManagingCursor(Cursor c) { 1811 synchronized (mManagedCursors) { 1812 final int N = mManagedCursors.size(); 1813 for (int i=0; i<N; i++) { 1814 ManagedCursor mc = mManagedCursors.get(i); 1815 if (mc.mCursor == c) { 1816 mManagedCursors.remove(i); 1817 break; 1818 } 1819 } 1820 } 1821 } 1822 1823 /** 1824 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1825 * this is a no-op. 1826 * @hide 1827 */ 1828 @Deprecated 1829 public void setPersistent(boolean isPersistent) { 1830 } 1831 1832 /** 1833 * Finds a view that was identified by the id attribute from the XML that 1834 * was processed in {@link #onCreate}. 1835 * 1836 * @return The view if found or null otherwise. 1837 */ 1838 public View findViewById(int id) { 1839 return getWindow().findViewById(id); 1840 } 1841 1842 /** 1843 * Retrieve a reference to this activity's ActionBar. 1844 * 1845 * @return The Activity's ActionBar, or null if it does not have one. 1846 */ 1847 public ActionBar getActionBar() { 1848 initActionBar(); 1849 return mActionBar; 1850 } 1851 1852 /** 1853 * Creates a new ActionBar, locates the inflated ActionBarView, 1854 * initializes the ActionBar with the view, and sets mActionBar. 1855 */ 1856 private void initActionBar() { 1857 Window window = getWindow(); 1858 1859 // Initializing the window decor can change window feature flags. 1860 // Make sure that we have the correct set before performing the test below. 1861 window.getDecorView(); 1862 1863 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1864 return; 1865 } 1866 1867 mActionBar = new ActionBarImpl(this); 1868 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 1869 } 1870 1871 /** 1872 * Set the activity content from a layout resource. The resource will be 1873 * inflated, adding all top-level views to the activity. 1874 * 1875 * @param layoutResID Resource ID to be inflated. 1876 * 1877 * @see #setContentView(android.view.View) 1878 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1879 */ 1880 public void setContentView(int layoutResID) { 1881 getWindow().setContentView(layoutResID); 1882 initActionBar(); 1883 } 1884 1885 /** 1886 * Set the activity content to an explicit view. This view is placed 1887 * directly into the activity's view hierarchy. It can itself be a complex 1888 * view hierarchy. When calling this method, the layout parameters of the 1889 * specified view are ignored. Both the width and the height of the view are 1890 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1891 * your own layout parameters, invoke 1892 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1893 * instead. 1894 * 1895 * @param view The desired content to display. 1896 * 1897 * @see #setContentView(int) 1898 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1899 */ 1900 public void setContentView(View view) { 1901 getWindow().setContentView(view); 1902 initActionBar(); 1903 } 1904 1905 /** 1906 * Set the activity content to an explicit view. This view is placed 1907 * directly into the activity's view hierarchy. It can itself be a complex 1908 * view hierarchy. 1909 * 1910 * @param view The desired content to display. 1911 * @param params Layout parameters for the view. 1912 * 1913 * @see #setContentView(android.view.View) 1914 * @see #setContentView(int) 1915 */ 1916 public void setContentView(View view, ViewGroup.LayoutParams params) { 1917 getWindow().setContentView(view, params); 1918 initActionBar(); 1919 } 1920 1921 /** 1922 * Add an additional content view to the activity. Added after any existing 1923 * ones in the activity -- existing views are NOT removed. 1924 * 1925 * @param view The desired content to display. 1926 * @param params Layout parameters for the view. 1927 */ 1928 public void addContentView(View view, ViewGroup.LayoutParams params) { 1929 getWindow().addContentView(view, params); 1930 initActionBar(); 1931 } 1932 1933 /** 1934 * Sets whether this activity is finished when touched outside its window's 1935 * bounds. 1936 */ 1937 public void setFinishOnTouchOutside(boolean finish) { 1938 mWindow.setCloseOnTouchOutside(finish); 1939 } 1940 1941 /** 1942 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1943 * keys. 1944 * 1945 * @see #setDefaultKeyMode 1946 */ 1947 static public final int DEFAULT_KEYS_DISABLE = 0; 1948 /** 1949 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1950 * key handling. 1951 * 1952 * @see #setDefaultKeyMode 1953 */ 1954 static public final int DEFAULT_KEYS_DIALER = 1; 1955 /** 1956 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1957 * default key handling. 1958 * 1959 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1960 * 1961 * @see #setDefaultKeyMode 1962 */ 1963 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1964 /** 1965 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1966 * will start an application-defined search. (If the application or activity does not 1967 * actually define a search, the the keys will be ignored.) 1968 * 1969 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1970 * 1971 * @see #setDefaultKeyMode 1972 */ 1973 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1974 1975 /** 1976 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1977 * will start a global search (typically web search, but some platforms may define alternate 1978 * methods for global search) 1979 * 1980 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1981 * 1982 * @see #setDefaultKeyMode 1983 */ 1984 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1985 1986 /** 1987 * Select the default key handling for this activity. This controls what 1988 * will happen to key events that are not otherwise handled. The default 1989 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1990 * floor. Other modes allow you to launch the dialer 1991 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1992 * menu without requiring the menu key be held down 1993 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1994 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1995 * 1996 * <p>Note that the mode selected here does not impact the default 1997 * handling of system keys, such as the "back" and "menu" keys, and your 1998 * activity and its views always get a first chance to receive and handle 1999 * all application keys. 2000 * 2001 * @param mode The desired default key mode constant. 2002 * 2003 * @see #DEFAULT_KEYS_DISABLE 2004 * @see #DEFAULT_KEYS_DIALER 2005 * @see #DEFAULT_KEYS_SHORTCUT 2006 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2007 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2008 * @see #onKeyDown 2009 */ 2010 public final void setDefaultKeyMode(int mode) { 2011 mDefaultKeyMode = mode; 2012 2013 // Some modes use a SpannableStringBuilder to track & dispatch input events 2014 // This list must remain in sync with the switch in onKeyDown() 2015 switch (mode) { 2016 case DEFAULT_KEYS_DISABLE: 2017 case DEFAULT_KEYS_SHORTCUT: 2018 mDefaultKeySsb = null; // not used in these modes 2019 break; 2020 case DEFAULT_KEYS_DIALER: 2021 case DEFAULT_KEYS_SEARCH_LOCAL: 2022 case DEFAULT_KEYS_SEARCH_GLOBAL: 2023 mDefaultKeySsb = new SpannableStringBuilder(); 2024 Selection.setSelection(mDefaultKeySsb,0); 2025 break; 2026 default: 2027 throw new IllegalArgumentException(); 2028 } 2029 } 2030 2031 /** 2032 * Called when a key was pressed down and not handled by any of the views 2033 * inside of the activity. So, for example, key presses while the cursor 2034 * is inside a TextView will not trigger the event (unless it is a navigation 2035 * to another object) because TextView handles its own key presses. 2036 * 2037 * <p>If the focused view didn't want this event, this method is called. 2038 * 2039 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2040 * by calling {@link #onBackPressed()}, though the behavior varies based 2041 * on the application compatibility mode: for 2042 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2043 * it will set up the dispatch to call {@link #onKeyUp} where the action 2044 * will be performed; for earlier applications, it will perform the 2045 * action immediately in on-down, as those versions of the platform 2046 * behaved. 2047 * 2048 * <p>Other additional default key handling may be performed 2049 * if configured with {@link #setDefaultKeyMode}. 2050 * 2051 * @return Return <code>true</code> to prevent this event from being propagated 2052 * further, or <code>false</code> to indicate that you have not handled 2053 * this event and it should continue to be propagated. 2054 * @see #onKeyUp 2055 * @see android.view.KeyEvent 2056 */ 2057 public boolean onKeyDown(int keyCode, KeyEvent event) { 2058 if (keyCode == KeyEvent.KEYCODE_BACK) { 2059 if (getApplicationInfo().targetSdkVersion 2060 >= Build.VERSION_CODES.ECLAIR) { 2061 event.startTracking(); 2062 } else { 2063 onBackPressed(); 2064 } 2065 return true; 2066 } 2067 2068 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2069 return false; 2070 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2071 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2072 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2073 return true; 2074 } 2075 return false; 2076 } else { 2077 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2078 boolean clearSpannable = false; 2079 boolean handled; 2080 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2081 clearSpannable = true; 2082 handled = false; 2083 } else { 2084 handled = TextKeyListener.getInstance().onKeyDown( 2085 null, mDefaultKeySsb, keyCode, event); 2086 if (handled && mDefaultKeySsb.length() > 0) { 2087 // something useable has been typed - dispatch it now. 2088 2089 final String str = mDefaultKeySsb.toString(); 2090 clearSpannable = true; 2091 2092 switch (mDefaultKeyMode) { 2093 case DEFAULT_KEYS_DIALER: 2094 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2095 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2096 startActivity(intent); 2097 break; 2098 case DEFAULT_KEYS_SEARCH_LOCAL: 2099 startSearch(str, false, null, false); 2100 break; 2101 case DEFAULT_KEYS_SEARCH_GLOBAL: 2102 startSearch(str, false, null, true); 2103 break; 2104 } 2105 } 2106 } 2107 if (clearSpannable) { 2108 mDefaultKeySsb.clear(); 2109 mDefaultKeySsb.clearSpans(); 2110 Selection.setSelection(mDefaultKeySsb,0); 2111 } 2112 return handled; 2113 } 2114 } 2115 2116 /** 2117 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2118 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2119 * the event). 2120 */ 2121 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2122 return false; 2123 } 2124 2125 /** 2126 * Called when a key was released and not handled by any of the views 2127 * inside of the activity. So, for example, key presses while the cursor 2128 * is inside a TextView will not trigger the event (unless it is a navigation 2129 * to another object) because TextView handles its own key presses. 2130 * 2131 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2132 * and go back. 2133 * 2134 * @return Return <code>true</code> to prevent this event from being propagated 2135 * further, or <code>false</code> to indicate that you have not handled 2136 * this event and it should continue to be propagated. 2137 * @see #onKeyDown 2138 * @see KeyEvent 2139 */ 2140 public boolean onKeyUp(int keyCode, KeyEvent event) { 2141 if (getApplicationInfo().targetSdkVersion 2142 >= Build.VERSION_CODES.ECLAIR) { 2143 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2144 && !event.isCanceled()) { 2145 onBackPressed(); 2146 return true; 2147 } 2148 } 2149 return false; 2150 } 2151 2152 /** 2153 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2154 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2155 * the event). 2156 */ 2157 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2158 return false; 2159 } 2160 2161 /** 2162 * Called when the activity has detected the user's press of the back 2163 * key. The default implementation simply finishes the current activity, 2164 * but you can override this to do whatever you want. 2165 */ 2166 public void onBackPressed() { 2167 if (!mFragments.popBackStackImmediate()) { 2168 finish(); 2169 } 2170 } 2171 2172 /** 2173 * Called when a key shortcut event is not handled by any of the views in the Activity. 2174 * Override this method to implement global key shortcuts for the Activity. 2175 * Key shortcuts can also be implemented by setting the 2176 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2177 * 2178 * @param keyCode The value in event.getKeyCode(). 2179 * @param event Description of the key event. 2180 * @return True if the key shortcut was handled. 2181 */ 2182 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2183 return false; 2184 } 2185 2186 /** 2187 * Called when a touch screen event was not handled by any of the views 2188 * under it. This is most useful to process touch events that happen 2189 * outside of your window bounds, where there is no view to receive it. 2190 * 2191 * @param event The touch screen event being processed. 2192 * 2193 * @return Return true if you have consumed the event, false if you haven't. 2194 * The default implementation always returns false. 2195 */ 2196 public boolean onTouchEvent(MotionEvent event) { 2197 if (mWindow.shouldCloseOnTouch(this, event)) { 2198 finish(); 2199 return true; 2200 } 2201 2202 return false; 2203 } 2204 2205 /** 2206 * Called when the trackball was moved and not handled by any of the 2207 * views inside of the activity. So, for example, if the trackball moves 2208 * while focus is on a button, you will receive a call here because 2209 * buttons do not normally do anything with trackball events. The call 2210 * here happens <em>before</em> trackball movements are converted to 2211 * DPAD key events, which then get sent back to the view hierarchy, and 2212 * will be processed at the point for things like focus navigation. 2213 * 2214 * @param event The trackball event being processed. 2215 * 2216 * @return Return true if you have consumed the event, false if you haven't. 2217 * The default implementation always returns false. 2218 */ 2219 public boolean onTrackballEvent(MotionEvent event) { 2220 return false; 2221 } 2222 2223 /** 2224 * Called when a generic motion event was not handled by any of the 2225 * views inside of the activity. 2226 * <p> 2227 * Generic motion events describe joystick movements, mouse hovers, track pad 2228 * touches, scroll wheel movements and other input events. The 2229 * {@link MotionEvent#getSource() source} of the motion event specifies 2230 * the class of input that was received. Implementations of this method 2231 * must examine the bits in the source before processing the event. 2232 * The following code example shows how this is done. 2233 * </p><p> 2234 * Generic motion events with source class 2235 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2236 * are delivered to the view under the pointer. All other generic motion events are 2237 * delivered to the focused view. 2238 * </p><p> 2239 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2240 * handle this event. 2241 * </p> 2242 * 2243 * @param event The generic motion event being processed. 2244 * 2245 * @return Return true if you have consumed the event, false if you haven't. 2246 * The default implementation always returns false. 2247 */ 2248 public boolean onGenericMotionEvent(MotionEvent event) { 2249 return false; 2250 } 2251 2252 /** 2253 * Called whenever a key, touch, or trackball event is dispatched to the 2254 * activity. Implement this method if you wish to know that the user has 2255 * interacted with the device in some way while your activity is running. 2256 * This callback and {@link #onUserLeaveHint} are intended to help 2257 * activities manage status bar notifications intelligently; specifically, 2258 * for helping activities determine the proper time to cancel a notfication. 2259 * 2260 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2261 * be accompanied by calls to {@link #onUserInteraction}. This 2262 * ensures that your activity will be told of relevant user activity such 2263 * as pulling down the notification pane and touching an item there. 2264 * 2265 * <p>Note that this callback will be invoked for the touch down action 2266 * that begins a touch gesture, but may not be invoked for the touch-moved 2267 * and touch-up actions that follow. 2268 * 2269 * @see #onUserLeaveHint() 2270 */ 2271 public void onUserInteraction() { 2272 } 2273 2274 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2275 // Update window manager if: we have a view, that view is 2276 // attached to its parent (which will be a RootView), and 2277 // this activity is not embedded. 2278 if (mParent == null) { 2279 View decor = mDecor; 2280 if (decor != null && decor.getParent() != null) { 2281 getWindowManager().updateViewLayout(decor, params); 2282 } 2283 } 2284 } 2285 2286 public void onContentChanged() { 2287 } 2288 2289 /** 2290 * Called when the current {@link Window} of the activity gains or loses 2291 * focus. This is the best indicator of whether this activity is visible 2292 * to the user. The default implementation clears the key tracking 2293 * state, so should always be called. 2294 * 2295 * <p>Note that this provides information about global focus state, which 2296 * is managed independently of activity lifecycles. As such, while focus 2297 * changes will generally have some relation to lifecycle changes (an 2298 * activity that is stopped will not generally get window focus), you 2299 * should not rely on any particular order between the callbacks here and 2300 * those in the other lifecycle methods such as {@link #onResume}. 2301 * 2302 * <p>As a general rule, however, a resumed activity will have window 2303 * focus... unless it has displayed other dialogs or popups that take 2304 * input focus, in which case the activity itself will not have focus 2305 * when the other windows have it. Likewise, the system may display 2306 * system-level windows (such as the status bar notification panel or 2307 * a system alert) which will temporarily take window input focus without 2308 * pausing the foreground activity. 2309 * 2310 * @param hasFocus Whether the window of this activity has focus. 2311 * 2312 * @see #hasWindowFocus() 2313 * @see #onResume 2314 * @see View#onWindowFocusChanged(boolean) 2315 */ 2316 public void onWindowFocusChanged(boolean hasFocus) { 2317 } 2318 2319 /** 2320 * Called when the main window associated with the activity has been 2321 * attached to the window manager. 2322 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2323 * for more information. 2324 * @see View#onAttachedToWindow 2325 */ 2326 public void onAttachedToWindow() { 2327 } 2328 2329 /** 2330 * Called when the main window associated with the activity has been 2331 * detached from the window manager. 2332 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2333 * for more information. 2334 * @see View#onDetachedFromWindow 2335 */ 2336 public void onDetachedFromWindow() { 2337 } 2338 2339 /** 2340 * Returns true if this activity's <em>main</em> window currently has window focus. 2341 * Note that this is not the same as the view itself having focus. 2342 * 2343 * @return True if this activity's main window currently has window focus. 2344 * 2345 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2346 */ 2347 public boolean hasWindowFocus() { 2348 Window w = getWindow(); 2349 if (w != null) { 2350 View d = w.getDecorView(); 2351 if (d != null) { 2352 return d.hasWindowFocus(); 2353 } 2354 } 2355 return false; 2356 } 2357 2358 /** 2359 * Called to process key events. You can override this to intercept all 2360 * key events before they are dispatched to the window. Be sure to call 2361 * this implementation for key events that should be handled normally. 2362 * 2363 * @param event The key event. 2364 * 2365 * @return boolean Return true if this event was consumed. 2366 */ 2367 public boolean dispatchKeyEvent(KeyEvent event) { 2368 onUserInteraction(); 2369 Window win = getWindow(); 2370 if (win.superDispatchKeyEvent(event)) { 2371 return true; 2372 } 2373 View decor = mDecor; 2374 if (decor == null) decor = win.getDecorView(); 2375 return event.dispatch(this, decor != null 2376 ? decor.getKeyDispatcherState() : null, this); 2377 } 2378 2379 /** 2380 * Called to process a key shortcut event. 2381 * You can override this to intercept all key shortcut events before they are 2382 * dispatched to the window. Be sure to call this implementation for key shortcut 2383 * events that should be handled normally. 2384 * 2385 * @param event The key shortcut event. 2386 * @return True if this event was consumed. 2387 */ 2388 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2389 onUserInteraction(); 2390 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2391 return true; 2392 } 2393 return onKeyShortcut(event.getKeyCode(), event); 2394 } 2395 2396 /** 2397 * Called to process touch screen events. You can override this to 2398 * intercept all touch screen events before they are dispatched to the 2399 * window. Be sure to call this implementation for touch screen events 2400 * that should be handled normally. 2401 * 2402 * @param ev The touch screen event. 2403 * 2404 * @return boolean Return true if this event was consumed. 2405 */ 2406 public boolean dispatchTouchEvent(MotionEvent ev) { 2407 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2408 onUserInteraction(); 2409 } 2410 if (getWindow().superDispatchTouchEvent(ev)) { 2411 return true; 2412 } 2413 return onTouchEvent(ev); 2414 } 2415 2416 /** 2417 * Called to process trackball events. You can override this to 2418 * intercept all trackball events before they are dispatched to the 2419 * window. Be sure to call this implementation for trackball events 2420 * that should be handled normally. 2421 * 2422 * @param ev The trackball event. 2423 * 2424 * @return boolean Return true if this event was consumed. 2425 */ 2426 public boolean dispatchTrackballEvent(MotionEvent ev) { 2427 onUserInteraction(); 2428 if (getWindow().superDispatchTrackballEvent(ev)) { 2429 return true; 2430 } 2431 return onTrackballEvent(ev); 2432 } 2433 2434 /** 2435 * Called to process generic motion events. You can override this to 2436 * intercept all generic motion events before they are dispatched to the 2437 * window. Be sure to call this implementation for generic motion events 2438 * that should be handled normally. 2439 * 2440 * @param ev The generic motion event. 2441 * 2442 * @return boolean Return true if this event was consumed. 2443 */ 2444 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2445 onUserInteraction(); 2446 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2447 return true; 2448 } 2449 return onGenericMotionEvent(ev); 2450 } 2451 2452 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2453 event.setClassName(getClass().getName()); 2454 event.setPackageName(getPackageName()); 2455 2456 LayoutParams params = getWindow().getAttributes(); 2457 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2458 (params.height == LayoutParams.MATCH_PARENT); 2459 event.setFullScreen(isFullScreen); 2460 2461 CharSequence title = getTitle(); 2462 if (!TextUtils.isEmpty(title)) { 2463 event.getText().add(title); 2464 } 2465 2466 return true; 2467 } 2468 2469 /** 2470 * Default implementation of 2471 * {@link android.view.Window.Callback#onCreatePanelView} 2472 * for activities. This 2473 * simply returns null so that all panel sub-windows will have the default 2474 * menu behavior. 2475 */ 2476 public View onCreatePanelView(int featureId) { 2477 return null; 2478 } 2479 2480 /** 2481 * Default implementation of 2482 * {@link android.view.Window.Callback#onCreatePanelMenu} 2483 * for activities. This calls through to the new 2484 * {@link #onCreateOptionsMenu} method for the 2485 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2486 * so that subclasses of Activity don't need to deal with feature codes. 2487 */ 2488 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2489 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2490 boolean show = onCreateOptionsMenu(menu); 2491 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2492 return show; 2493 } 2494 return false; 2495 } 2496 2497 /** 2498 * Default implementation of 2499 * {@link android.view.Window.Callback#onPreparePanel} 2500 * for activities. This 2501 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2502 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2503 * panel, so that subclasses of 2504 * Activity don't need to deal with feature codes. 2505 */ 2506 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2507 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2508 boolean goforit = onPrepareOptionsMenu(menu); 2509 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2510 return goforit; 2511 } 2512 return true; 2513 } 2514 2515 /** 2516 * {@inheritDoc} 2517 * 2518 * @return The default implementation returns true. 2519 */ 2520 public boolean onMenuOpened(int featureId, Menu menu) { 2521 if (featureId == Window.FEATURE_ACTION_BAR) { 2522 initActionBar(); 2523 if (mActionBar != null) { 2524 mActionBar.dispatchMenuVisibilityChanged(true); 2525 } else { 2526 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2527 } 2528 } 2529 return true; 2530 } 2531 2532 /** 2533 * Default implementation of 2534 * {@link android.view.Window.Callback#onMenuItemSelected} 2535 * for activities. This calls through to the new 2536 * {@link #onOptionsItemSelected} method for the 2537 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2538 * panel, so that subclasses of 2539 * Activity don't need to deal with feature codes. 2540 */ 2541 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2542 CharSequence titleCondensed = item.getTitleCondensed(); 2543 2544 switch (featureId) { 2545 case Window.FEATURE_OPTIONS_PANEL: 2546 // Put event logging here so it gets called even if subclass 2547 // doesn't call through to superclass's implmeentation of each 2548 // of these methods below 2549 if(titleCondensed != null) { 2550 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 2551 } 2552 if (onOptionsItemSelected(item)) { 2553 return true; 2554 } 2555 if (mFragments.dispatchOptionsItemSelected(item)) { 2556 return true; 2557 } 2558 if (item.getItemId() == android.R.id.home && mActionBar != null && 2559 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 2560 if (mParent == null) { 2561 return onNavigateUp(); 2562 } else { 2563 return mParent.onNavigateUpFromChild(this); 2564 } 2565 } 2566 return false; 2567 2568 case Window.FEATURE_CONTEXT_MENU: 2569 if(titleCondensed != null) { 2570 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 2571 } 2572 if (onContextItemSelected(item)) { 2573 return true; 2574 } 2575 return mFragments.dispatchContextItemSelected(item); 2576 2577 default: 2578 return false; 2579 } 2580 } 2581 2582 /** 2583 * Default implementation of 2584 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2585 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2586 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2587 * so that subclasses of Activity don't need to deal with feature codes. 2588 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2589 * {@link #onContextMenuClosed(Menu)} will be called. 2590 */ 2591 public void onPanelClosed(int featureId, Menu menu) { 2592 switch (featureId) { 2593 case Window.FEATURE_OPTIONS_PANEL: 2594 mFragments.dispatchOptionsMenuClosed(menu); 2595 onOptionsMenuClosed(menu); 2596 break; 2597 2598 case Window.FEATURE_CONTEXT_MENU: 2599 onContextMenuClosed(menu); 2600 break; 2601 2602 case Window.FEATURE_ACTION_BAR: 2603 initActionBar(); 2604 mActionBar.dispatchMenuVisibilityChanged(false); 2605 break; 2606 } 2607 } 2608 2609 /** 2610 * Declare that the options menu has changed, so should be recreated. 2611 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2612 * time it needs to be displayed. 2613 */ 2614 public void invalidateOptionsMenu() { 2615 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2616 } 2617 2618 /** 2619 * Initialize the contents of the Activity's standard options menu. You 2620 * should place your menu items in to <var>menu</var>. 2621 * 2622 * <p>This is only called once, the first time the options menu is 2623 * displayed. To update the menu every time it is displayed, see 2624 * {@link #onPrepareOptionsMenu}. 2625 * 2626 * <p>The default implementation populates the menu with standard system 2627 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2628 * they will be correctly ordered with application-defined menu items. 2629 * Deriving classes should always call through to the base implementation. 2630 * 2631 * <p>You can safely hold on to <var>menu</var> (and any items created 2632 * from it), making modifications to it as desired, until the next 2633 * time onCreateOptionsMenu() is called. 2634 * 2635 * <p>When you add items to the menu, you can implement the Activity's 2636 * {@link #onOptionsItemSelected} method to handle them there. 2637 * 2638 * @param menu The options menu in which you place your items. 2639 * 2640 * @return You must return true for the menu to be displayed; 2641 * if you return false it will not be shown. 2642 * 2643 * @see #onPrepareOptionsMenu 2644 * @see #onOptionsItemSelected 2645 */ 2646 public boolean onCreateOptionsMenu(Menu menu) { 2647 if (mParent != null) { 2648 return mParent.onCreateOptionsMenu(menu); 2649 } 2650 return true; 2651 } 2652 2653 /** 2654 * Prepare the Screen's standard options menu to be displayed. This is 2655 * called right before the menu is shown, every time it is shown. You can 2656 * use this method to efficiently enable/disable items or otherwise 2657 * dynamically modify the contents. 2658 * 2659 * <p>The default implementation updates the system menu items based on the 2660 * activity's state. Deriving classes should always call through to the 2661 * base class implementation. 2662 * 2663 * @param menu The options menu as last shown or first initialized by 2664 * onCreateOptionsMenu(). 2665 * 2666 * @return You must return true for the menu to be displayed; 2667 * if you return false it will not be shown. 2668 * 2669 * @see #onCreateOptionsMenu 2670 */ 2671 public boolean onPrepareOptionsMenu(Menu menu) { 2672 if (mParent != null) { 2673 return mParent.onPrepareOptionsMenu(menu); 2674 } 2675 return true; 2676 } 2677 2678 /** 2679 * This hook is called whenever an item in your options menu is selected. 2680 * The default implementation simply returns false to have the normal 2681 * processing happen (calling the item's Runnable or sending a message to 2682 * its Handler as appropriate). You can use this method for any items 2683 * for which you would like to do processing without those other 2684 * facilities. 2685 * 2686 * <p>Derived classes should call through to the base class for it to 2687 * perform the default menu handling.</p> 2688 * 2689 * @param item The menu item that was selected. 2690 * 2691 * @return boolean Return false to allow normal menu processing to 2692 * proceed, true to consume it here. 2693 * 2694 * @see #onCreateOptionsMenu 2695 */ 2696 public boolean onOptionsItemSelected(MenuItem item) { 2697 if (mParent != null) { 2698 return mParent.onOptionsItemSelected(item); 2699 } 2700 return false; 2701 } 2702 2703 /** 2704 * This method is called whenever the user chooses to navigate Up within your application's 2705 * activity hierarchy from the action bar. 2706 * 2707 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 2708 * was specified in the manifest for this activity or an activity-alias to it, 2709 * default Up navigation will be handled automatically. If any activity 2710 * along the parent chain requires extra Intent arguments, the Activity subclass 2711 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 2712 * to supply those arguments.</p> 2713 * 2714 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 2715 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 2716 * from the design guide for more information about navigating within your app.</p> 2717 * 2718 * <p>See the {@link TaskStackBuilder} class and the Activity methods 2719 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 2720 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 2721 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 2722 * 2723 * @return true if Up navigation completed successfully and this Activity was finished, 2724 * false otherwise. 2725 */ 2726 public boolean onNavigateUp() { 2727 // Automatically handle hierarchical Up navigation if the proper 2728 // metadata is available. 2729 Intent upIntent = getParentActivityIntent(); 2730 if (upIntent != null) { 2731 if (mActivityInfo.taskAffinity == null) { 2732 // Activities with a null affinity are special; they really shouldn't 2733 // specify a parent activity intent in the first place. Just finish 2734 // the current activity and call it a day. 2735 finish(); 2736 } else if (shouldUpRecreateTask(upIntent)) { 2737 TaskStackBuilder b = TaskStackBuilder.create(this); 2738 onCreateNavigateUpTaskStack(b); 2739 onPrepareNavigateUpTaskStack(b); 2740 b.startActivities(); 2741 2742 // We can't finishAffinity if we have a result. 2743 // Fall back and simply finish the current activity instead. 2744 if (mResultCode != RESULT_CANCELED || mResultData != null) { 2745 // Tell the developer what's going on to avoid hair-pulling. 2746 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 2747 finish(); 2748 } else { 2749 finishAffinity(); 2750 } 2751 } else { 2752 navigateUpTo(upIntent); 2753 } 2754 return true; 2755 } 2756 return false; 2757 } 2758 2759 /** 2760 * This is called when a child activity of this one attempts to navigate up. 2761 * The default implementation simply calls onNavigateUp() on this activity (the parent). 2762 * 2763 * @param child The activity making the call. 2764 */ 2765 public boolean onNavigateUpFromChild(Activity child) { 2766 return onNavigateUp(); 2767 } 2768 2769 /** 2770 * Define the synthetic task stack that will be generated during Up navigation from 2771 * a different task. 2772 * 2773 * <p>The default implementation of this method adds the parent chain of this activity 2774 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 2775 * may choose to override this method to construct the desired task stack in a different 2776 * way.</p> 2777 * 2778 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 2779 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 2780 * returned by {@link #getParentActivityIntent()}.</p> 2781 * 2782 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 2783 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 2784 * 2785 * @param builder An empty TaskStackBuilder - the application should add intents representing 2786 * the desired task stack 2787 */ 2788 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 2789 builder.addParentStack(this); 2790 } 2791 2792 /** 2793 * Prepare the synthetic task stack that will be generated during Up navigation 2794 * from a different task. 2795 * 2796 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 2797 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 2798 * If any extra data should be added to these intents before launching the new task, 2799 * the application should override this method and add that data here.</p> 2800 * 2801 * @param builder A TaskStackBuilder that has been populated with Intents by 2802 * onCreateNavigateUpTaskStack. 2803 */ 2804 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 2805 } 2806 2807 /** 2808 * This hook is called whenever the options menu is being closed (either by the user canceling 2809 * the menu with the back/menu button, or when an item is selected). 2810 * 2811 * @param menu The options menu as last shown or first initialized by 2812 * onCreateOptionsMenu(). 2813 */ 2814 public void onOptionsMenuClosed(Menu menu) { 2815 if (mParent != null) { 2816 mParent.onOptionsMenuClosed(menu); 2817 } 2818 } 2819 2820 /** 2821 * Programmatically opens the options menu. If the options menu is already 2822 * open, this method does nothing. 2823 */ 2824 public void openOptionsMenu() { 2825 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2826 } 2827 2828 /** 2829 * Progammatically closes the options menu. If the options menu is already 2830 * closed, this method does nothing. 2831 */ 2832 public void closeOptionsMenu() { 2833 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2834 } 2835 2836 /** 2837 * Called when a context menu for the {@code view} is about to be shown. 2838 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2839 * time the context menu is about to be shown and should be populated for 2840 * the view (or item inside the view for {@link AdapterView} subclasses, 2841 * this can be found in the {@code menuInfo})). 2842 * <p> 2843 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2844 * item has been selected. 2845 * <p> 2846 * It is not safe to hold onto the context menu after this method returns. 2847 * {@inheritDoc} 2848 */ 2849 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2850 } 2851 2852 /** 2853 * Registers a context menu to be shown for the given view (multiple views 2854 * can show the context menu). This method will set the 2855 * {@link OnCreateContextMenuListener} on the view to this activity, so 2856 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2857 * called when it is time to show the context menu. 2858 * 2859 * @see #unregisterForContextMenu(View) 2860 * @param view The view that should show a context menu. 2861 */ 2862 public void registerForContextMenu(View view) { 2863 view.setOnCreateContextMenuListener(this); 2864 } 2865 2866 /** 2867 * Prevents a context menu to be shown for the given view. This method will remove the 2868 * {@link OnCreateContextMenuListener} on the view. 2869 * 2870 * @see #registerForContextMenu(View) 2871 * @param view The view that should stop showing a context menu. 2872 */ 2873 public void unregisterForContextMenu(View view) { 2874 view.setOnCreateContextMenuListener(null); 2875 } 2876 2877 /** 2878 * Programmatically opens the context menu for a particular {@code view}. 2879 * The {@code view} should have been added via 2880 * {@link #registerForContextMenu(View)}. 2881 * 2882 * @param view The view to show the context menu for. 2883 */ 2884 public void openContextMenu(View view) { 2885 view.showContextMenu(); 2886 } 2887 2888 /** 2889 * Programmatically closes the most recently opened context menu, if showing. 2890 */ 2891 public void closeContextMenu() { 2892 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2893 } 2894 2895 /** 2896 * This hook is called whenever an item in a context menu is selected. The 2897 * default implementation simply returns false to have the normal processing 2898 * happen (calling the item's Runnable or sending a message to its Handler 2899 * as appropriate). You can use this method for any items for which you 2900 * would like to do processing without those other facilities. 2901 * <p> 2902 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2903 * View that added this menu item. 2904 * <p> 2905 * Derived classes should call through to the base class for it to perform 2906 * the default menu handling. 2907 * 2908 * @param item The context menu item that was selected. 2909 * @return boolean Return false to allow normal context menu processing to 2910 * proceed, true to consume it here. 2911 */ 2912 public boolean onContextItemSelected(MenuItem item) { 2913 if (mParent != null) { 2914 return mParent.onContextItemSelected(item); 2915 } 2916 return false; 2917 } 2918 2919 /** 2920 * This hook is called whenever the context menu is being closed (either by 2921 * the user canceling the menu with the back/menu button, or when an item is 2922 * selected). 2923 * 2924 * @param menu The context menu that is being closed. 2925 */ 2926 public void onContextMenuClosed(Menu menu) { 2927 if (mParent != null) { 2928 mParent.onContextMenuClosed(menu); 2929 } 2930 } 2931 2932 /** 2933 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2934 */ 2935 @Deprecated 2936 protected Dialog onCreateDialog(int id) { 2937 return null; 2938 } 2939 2940 /** 2941 * Callback for creating dialogs that are managed (saved and restored) for you 2942 * by the activity. The default implementation calls through to 2943 * {@link #onCreateDialog(int)} for compatibility. 2944 * 2945 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2946 * or later, consider instead using a {@link DialogFragment} instead.</em> 2947 * 2948 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2949 * this method the first time, and hang onto it thereafter. Any dialog 2950 * that is created by this method will automatically be saved and restored 2951 * for you, including whether it is showing. 2952 * 2953 * <p>If you would like the activity to manage saving and restoring dialogs 2954 * for you, you should override this method and handle any ids that are 2955 * passed to {@link #showDialog}. 2956 * 2957 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2958 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2959 * 2960 * @param id The id of the dialog. 2961 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2962 * @return The dialog. If you return null, the dialog will not be created. 2963 * 2964 * @see #onPrepareDialog(int, Dialog, Bundle) 2965 * @see #showDialog(int, Bundle) 2966 * @see #dismissDialog(int) 2967 * @see #removeDialog(int) 2968 * 2969 * @deprecated Use the new {@link DialogFragment} class with 2970 * {@link FragmentManager} instead; this is also 2971 * available on older platforms through the Android compatibility package. 2972 */ 2973 @Deprecated 2974 protected Dialog onCreateDialog(int id, Bundle args) { 2975 return onCreateDialog(id); 2976 } 2977 2978 /** 2979 * @deprecated Old no-arguments version of 2980 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2981 */ 2982 @Deprecated 2983 protected void onPrepareDialog(int id, Dialog dialog) { 2984 dialog.setOwnerActivity(this); 2985 } 2986 2987 /** 2988 * Provides an opportunity to prepare a managed dialog before it is being 2989 * shown. The default implementation calls through to 2990 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2991 * 2992 * <p> 2993 * Override this if you need to update a managed dialog based on the state 2994 * of the application each time it is shown. For example, a time picker 2995 * dialog might want to be updated with the current time. You should call 2996 * through to the superclass's implementation. The default implementation 2997 * will set this Activity as the owner activity on the Dialog. 2998 * 2999 * @param id The id of the managed dialog. 3000 * @param dialog The dialog. 3001 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3002 * @see #onCreateDialog(int, Bundle) 3003 * @see #showDialog(int) 3004 * @see #dismissDialog(int) 3005 * @see #removeDialog(int) 3006 * 3007 * @deprecated Use the new {@link DialogFragment} class with 3008 * {@link FragmentManager} instead; this is also 3009 * available on older platforms through the Android compatibility package. 3010 */ 3011 @Deprecated 3012 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3013 onPrepareDialog(id, dialog); 3014 } 3015 3016 /** 3017 * Simple version of {@link #showDialog(int, Bundle)} that does not 3018 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3019 * with null arguments. 3020 * 3021 * @deprecated Use the new {@link DialogFragment} class with 3022 * {@link FragmentManager} instead; this is also 3023 * available on older platforms through the Android compatibility package. 3024 */ 3025 @Deprecated 3026 public final void showDialog(int id) { 3027 showDialog(id, null); 3028 } 3029 3030 /** 3031 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3032 * will be made with the same id the first time this is called for a given 3033 * id. From thereafter, the dialog will be automatically saved and restored. 3034 * 3035 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3036 * or later, consider instead using a {@link DialogFragment} instead.</em> 3037 * 3038 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3039 * be made to provide an opportunity to do any timely preparation. 3040 * 3041 * @param id The id of the managed dialog. 3042 * @param args Arguments to pass through to the dialog. These will be saved 3043 * and restored for you. Note that if the dialog is already created, 3044 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3045 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3046 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3047 * @return Returns true if the Dialog was created; false is returned if 3048 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3049 * 3050 * @see Dialog 3051 * @see #onCreateDialog(int, Bundle) 3052 * @see #onPrepareDialog(int, Dialog, Bundle) 3053 * @see #dismissDialog(int) 3054 * @see #removeDialog(int) 3055 * 3056 * @deprecated Use the new {@link DialogFragment} class with 3057 * {@link FragmentManager} instead; this is also 3058 * available on older platforms through the Android compatibility package. 3059 */ 3060 @Deprecated 3061 public final boolean showDialog(int id, Bundle args) { 3062 if (mManagedDialogs == null) { 3063 mManagedDialogs = new SparseArray<ManagedDialog>(); 3064 } 3065 ManagedDialog md = mManagedDialogs.get(id); 3066 if (md == null) { 3067 md = new ManagedDialog(); 3068 md.mDialog = createDialog(id, null, args); 3069 if (md.mDialog == null) { 3070 return false; 3071 } 3072 mManagedDialogs.put(id, md); 3073 } 3074 3075 md.mArgs = args; 3076 onPrepareDialog(id, md.mDialog, args); 3077 md.mDialog.show(); 3078 return true; 3079 } 3080 3081 /** 3082 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3083 * 3084 * @param id The id of the managed dialog. 3085 * 3086 * @throws IllegalArgumentException if the id was not previously shown via 3087 * {@link #showDialog(int)}. 3088 * 3089 * @see #onCreateDialog(int, Bundle) 3090 * @see #onPrepareDialog(int, Dialog, Bundle) 3091 * @see #showDialog(int) 3092 * @see #removeDialog(int) 3093 * 3094 * @deprecated Use the new {@link DialogFragment} class with 3095 * {@link FragmentManager} instead; this is also 3096 * available on older platforms through the Android compatibility package. 3097 */ 3098 @Deprecated 3099 public final void dismissDialog(int id) { 3100 if (mManagedDialogs == null) { 3101 throw missingDialog(id); 3102 } 3103 3104 final ManagedDialog md = mManagedDialogs.get(id); 3105 if (md == null) { 3106 throw missingDialog(id); 3107 } 3108 md.mDialog.dismiss(); 3109 } 3110 3111 /** 3112 * Creates an exception to throw if a user passed in a dialog id that is 3113 * unexpected. 3114 */ 3115 private IllegalArgumentException missingDialog(int id) { 3116 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3117 + "shown via Activity#showDialog"); 3118 } 3119 3120 /** 3121 * Removes any internal references to a dialog managed by this Activity. 3122 * If the dialog is showing, it will dismiss it as part of the clean up. 3123 * 3124 * <p>This can be useful if you know that you will never show a dialog again and 3125 * want to avoid the overhead of saving and restoring it in the future. 3126 * 3127 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3128 * will not throw an exception if you try to remove an ID that does not 3129 * currently have an associated dialog.</p> 3130 * 3131 * @param id The id of the managed dialog. 3132 * 3133 * @see #onCreateDialog(int, Bundle) 3134 * @see #onPrepareDialog(int, Dialog, Bundle) 3135 * @see #showDialog(int) 3136 * @see #dismissDialog(int) 3137 * 3138 * @deprecated Use the new {@link DialogFragment} class with 3139 * {@link FragmentManager} instead; this is also 3140 * available on older platforms through the Android compatibility package. 3141 */ 3142 @Deprecated 3143 public final void removeDialog(int id) { 3144 if (mManagedDialogs != null) { 3145 final ManagedDialog md = mManagedDialogs.get(id); 3146 if (md != null) { 3147 md.mDialog.dismiss(); 3148 mManagedDialogs.remove(id); 3149 } 3150 } 3151 } 3152 3153 /** 3154 * This hook is called when the user signals the desire to start a search. 3155 * 3156 * <p>You can use this function as a simple way to launch the search UI, in response to a 3157 * menu item, search button, or other widgets within your activity. Unless overidden, 3158 * calling this function is the same as calling 3159 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3160 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3161 * 3162 * <p>You can override this function to force global search, e.g. in response to a dedicated 3163 * search key, or to block search entirely (by simply returning false). 3164 * 3165 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 3166 * The default implementation always returns {@code true}. 3167 * 3168 * @see android.app.SearchManager 3169 */ 3170 public boolean onSearchRequested() { 3171 startSearch(null, false, null, false); 3172 return true; 3173 } 3174 3175 /** 3176 * This hook is called to launch the search UI. 3177 * 3178 * <p>It is typically called from onSearchRequested(), either directly from 3179 * Activity.onSearchRequested() or from an overridden version in any given 3180 * Activity. If your goal is simply to activate search, it is preferred to call 3181 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 3182 * is to inject specific data such as context data, it is preferred to <i>override</i> 3183 * onSearchRequested(), so that any callers to it will benefit from the override. 3184 * 3185 * @param initialQuery Any non-null non-empty string will be inserted as 3186 * pre-entered text in the search query box. 3187 * @param selectInitialQuery If true, the intial query will be preselected, which means that 3188 * any further typing will replace it. This is useful for cases where an entire pre-formed 3189 * query is being inserted. If false, the selection point will be placed at the end of the 3190 * inserted query. This is useful when the inserted query is text that the user entered, 3191 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3192 * if initialQuery is a non-empty string.</i> 3193 * @param appSearchData An application can insert application-specific 3194 * context here, in order to improve quality or specificity of its own 3195 * searches. This data will be returned with SEARCH intent(s). Null if 3196 * no extra data is required. 3197 * @param globalSearch If false, this will only launch the search that has been specifically 3198 * defined by the application (which is usually defined as a local search). If no default 3199 * search is defined in the current application or activity, global search will be launched. 3200 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3201 * 3202 * @see android.app.SearchManager 3203 * @see #onSearchRequested 3204 */ 3205 public void startSearch(String initialQuery, boolean selectInitialQuery, 3206 Bundle appSearchData, boolean globalSearch) { 3207 ensureSearchManager(); 3208 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3209 appSearchData, globalSearch); 3210 } 3211 3212 /** 3213 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3214 * the search dialog. Made available for testing purposes. 3215 * 3216 * @param query The query to trigger. If empty, the request will be ignored. 3217 * @param appSearchData An application can insert application-specific 3218 * context here, in order to improve quality or specificity of its own 3219 * searches. This data will be returned with SEARCH intent(s). Null if 3220 * no extra data is required. 3221 */ 3222 public void triggerSearch(String query, Bundle appSearchData) { 3223 ensureSearchManager(); 3224 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3225 } 3226 3227 /** 3228 * Request that key events come to this activity. Use this if your 3229 * activity has no views with focus, but the activity still wants 3230 * a chance to process key events. 3231 * 3232 * @see android.view.Window#takeKeyEvents 3233 */ 3234 public void takeKeyEvents(boolean get) { 3235 getWindow().takeKeyEvents(get); 3236 } 3237 3238 /** 3239 * Enable extended window features. This is a convenience for calling 3240 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3241 * 3242 * @param featureId The desired feature as defined in 3243 * {@link android.view.Window}. 3244 * @return Returns true if the requested feature is supported and now 3245 * enabled. 3246 * 3247 * @see android.view.Window#requestFeature 3248 */ 3249 public final boolean requestWindowFeature(int featureId) { 3250 return getWindow().requestFeature(featureId); 3251 } 3252 3253 /** 3254 * Convenience for calling 3255 * {@link android.view.Window#setFeatureDrawableResource}. 3256 */ 3257 public final void setFeatureDrawableResource(int featureId, int resId) { 3258 getWindow().setFeatureDrawableResource(featureId, resId); 3259 } 3260 3261 /** 3262 * Convenience for calling 3263 * {@link android.view.Window#setFeatureDrawableUri}. 3264 */ 3265 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3266 getWindow().setFeatureDrawableUri(featureId, uri); 3267 } 3268 3269 /** 3270 * Convenience for calling 3271 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3272 */ 3273 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3274 getWindow().setFeatureDrawable(featureId, drawable); 3275 } 3276 3277 /** 3278 * Convenience for calling 3279 * {@link android.view.Window#setFeatureDrawableAlpha}. 3280 */ 3281 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3282 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3283 } 3284 3285 /** 3286 * Convenience for calling 3287 * {@link android.view.Window#getLayoutInflater}. 3288 */ 3289 public LayoutInflater getLayoutInflater() { 3290 return getWindow().getLayoutInflater(); 3291 } 3292 3293 /** 3294 * Returns a {@link MenuInflater} with this context. 3295 */ 3296 public MenuInflater getMenuInflater() { 3297 // Make sure that action views can get an appropriate theme. 3298 if (mMenuInflater == null) { 3299 initActionBar(); 3300 if (mActionBar != null) { 3301 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3302 } else { 3303 mMenuInflater = new MenuInflater(this); 3304 } 3305 } 3306 return mMenuInflater; 3307 } 3308 3309 @Override 3310 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3311 boolean first) { 3312 if (mParent == null) { 3313 super.onApplyThemeResource(theme, resid, first); 3314 } else { 3315 try { 3316 theme.setTo(mParent.getTheme()); 3317 } catch (Exception e) { 3318 // Empty 3319 } 3320 theme.applyStyle(resid, false); 3321 } 3322 } 3323 3324 /** 3325 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 3326 * with no options. 3327 * 3328 * @param intent The intent to start. 3329 * @param requestCode If >= 0, this code will be returned in 3330 * onActivityResult() when the activity exits. 3331 * 3332 * @throws android.content.ActivityNotFoundException 3333 * 3334 * @see #startActivity 3335 */ 3336 public void startActivityForResult(Intent intent, int requestCode) { 3337 startActivityForResult(intent, requestCode, null); 3338 } 3339 3340 /** 3341 * Launch an activity for which you would like a result when it finished. 3342 * When this activity exits, your 3343 * onActivityResult() method will be called with the given requestCode. 3344 * Using a negative requestCode is the same as calling 3345 * {@link #startActivity} (the activity is not launched as a sub-activity). 3346 * 3347 * <p>Note that this method should only be used with Intent protocols 3348 * that are defined to return a result. In other protocols (such as 3349 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3350 * not get the result when you expect. For example, if the activity you 3351 * are launching uses the singleTask launch mode, it will not run in your 3352 * task and thus you will immediately receive a cancel result. 3353 * 3354 * <p>As a special case, if you call startActivityForResult() with a requestCode 3355 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3356 * activity, then your window will not be displayed until a result is 3357 * returned back from the started activity. This is to avoid visible 3358 * flickering when redirecting to another activity. 3359 * 3360 * <p>This method throws {@link android.content.ActivityNotFoundException} 3361 * if there was no Activity found to run the given Intent. 3362 * 3363 * @param intent The intent to start. 3364 * @param requestCode If >= 0, this code will be returned in 3365 * onActivityResult() when the activity exits. 3366 * @param options Additional options for how the Activity should be started. 3367 * See {@link android.content.Context#startActivity(Intent, Bundle) 3368 * Context.startActivity(Intent, Bundle)} for more details. 3369 * 3370 * @throws android.content.ActivityNotFoundException 3371 * 3372 * @see #startActivity 3373 */ 3374 public void startActivityForResult(Intent intent, int requestCode, Bundle options) { 3375 if (mParent == null) { 3376 Instrumentation.ActivityResult ar = 3377 mInstrumentation.execStartActivity( 3378 this, mMainThread.getApplicationThread(), mToken, this, 3379 intent, requestCode, options); 3380 if (ar != null) { 3381 mMainThread.sendActivityResult( 3382 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3383 ar.getResultData()); 3384 } 3385 if (requestCode >= 0) { 3386 // If this start is requesting a result, we can avoid making 3387 // the activity visible until the result is received. Setting 3388 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3389 // activity hidden during this time, to avoid flickering. 3390 // This can only be done when a result is requested because 3391 // that guarantees we will get information back when the 3392 // activity is finished, no matter what happens to it. 3393 mStartedActivity = true; 3394 } 3395 } else { 3396 if (options != null) { 3397 mParent.startActivityFromChild(this, intent, requestCode, options); 3398 } else { 3399 // Note we want to go through this method for compatibility with 3400 // existing applications that may have overridden it. 3401 mParent.startActivityFromChild(this, intent, requestCode); 3402 } 3403 } 3404 } 3405 3406 /** 3407 * @hide Implement to provide correct calling token. 3408 */ 3409 public void startActivityAsUser(Intent intent, UserHandle user) { 3410 startActivityAsUser(intent, null, user); 3411 } 3412 3413 /** 3414 * @hide Implement to provide correct calling token. 3415 */ 3416 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 3417 if (mParent != null) { 3418 throw new RuntimeException("Called be called from a child"); 3419 } 3420 Instrumentation.ActivityResult ar = 3421 mInstrumentation.execStartActivity( 3422 this, mMainThread.getApplicationThread(), mToken, this, 3423 intent, -1, options, user); 3424 if (ar != null) { 3425 mMainThread.sendActivityResult( 3426 mToken, mEmbeddedID, -1, ar.getResultCode(), 3427 ar.getResultData()); 3428 } 3429 } 3430 3431 /** 3432 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 3433 * Intent, int, int, int, Bundle)} with no options. 3434 * 3435 * @param intent The IntentSender to launch. 3436 * @param requestCode If >= 0, this code will be returned in 3437 * onActivityResult() when the activity exits. 3438 * @param fillInIntent If non-null, this will be provided as the 3439 * intent parameter to {@link IntentSender#sendIntent}. 3440 * @param flagsMask Intent flags in the original IntentSender that you 3441 * would like to change. 3442 * @param flagsValues Desired values for any bits set in 3443 * <var>flagsMask</var> 3444 * @param extraFlags Always set to 0. 3445 */ 3446 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3447 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3448 throws IntentSender.SendIntentException { 3449 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 3450 flagsValues, extraFlags, null); 3451 } 3452 3453 /** 3454 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3455 * to use a IntentSender to describe the activity to be started. If 3456 * the IntentSender is for an activity, that activity will be started 3457 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3458 * here; otherwise, its associated action will be executed (such as 3459 * sending a broadcast) as if you had called 3460 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3461 * 3462 * @param intent The IntentSender to launch. 3463 * @param requestCode If >= 0, this code will be returned in 3464 * onActivityResult() when the activity exits. 3465 * @param fillInIntent If non-null, this will be provided as the 3466 * intent parameter to {@link IntentSender#sendIntent}. 3467 * @param flagsMask Intent flags in the original IntentSender that you 3468 * would like to change. 3469 * @param flagsValues Desired values for any bits set in 3470 * <var>flagsMask</var> 3471 * @param extraFlags Always set to 0. 3472 * @param options Additional options for how the Activity should be started. 3473 * See {@link android.content.Context#startActivity(Intent, Bundle) 3474 * Context.startActivity(Intent, Bundle)} for more details. If options 3475 * have also been supplied by the IntentSender, options given here will 3476 * override any that conflict with those given by the IntentSender. 3477 */ 3478 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3479 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3480 Bundle options) throws IntentSender.SendIntentException { 3481 if (mParent == null) { 3482 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3483 flagsMask, flagsValues, this, options); 3484 } else if (options != null) { 3485 mParent.startIntentSenderFromChild(this, intent, requestCode, 3486 fillInIntent, flagsMask, flagsValues, extraFlags, options); 3487 } else { 3488 // Note we want to go through this call for compatibility with 3489 // existing applications that may have overridden the method. 3490 mParent.startIntentSenderFromChild(this, intent, requestCode, 3491 fillInIntent, flagsMask, flagsValues, extraFlags); 3492 } 3493 } 3494 3495 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3496 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 3497 Bundle options) 3498 throws IntentSender.SendIntentException { 3499 try { 3500 String resolvedType = null; 3501 if (fillInIntent != null) { 3502 fillInIntent.setAllowFds(false); 3503 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3504 } 3505 int result = ActivityManagerNative.getDefault() 3506 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3507 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3508 requestCode, flagsMask, flagsValues, options); 3509 if (result == ActivityManager.START_CANCELED) { 3510 throw new IntentSender.SendIntentException(); 3511 } 3512 Instrumentation.checkStartActivityResult(result, null); 3513 } catch (RemoteException e) { 3514 } 3515 if (requestCode >= 0) { 3516 // If this start is requesting a result, we can avoid making 3517 // the activity visible until the result is received. Setting 3518 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3519 // activity hidden during this time, to avoid flickering. 3520 // This can only be done when a result is requested because 3521 // that guarantees we will get information back when the 3522 // activity is finished, no matter what happens to it. 3523 mStartedActivity = true; 3524 } 3525 } 3526 3527 /** 3528 * Same as {@link #startActivity(Intent, Bundle)} with no options 3529 * specified. 3530 * 3531 * @param intent The intent to start. 3532 * 3533 * @throws android.content.ActivityNotFoundException 3534 * 3535 * @see {@link #startActivity(Intent, Bundle)} 3536 * @see #startActivityForResult 3537 */ 3538 @Override 3539 public void startActivity(Intent intent) { 3540 startActivity(intent, null); 3541 } 3542 3543 /** 3544 * Launch a new activity. You will not receive any information about when 3545 * the activity exits. This implementation overrides the base version, 3546 * providing information about 3547 * the activity performing the launch. Because of this additional 3548 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3549 * required; if not specified, the new activity will be added to the 3550 * task of the caller. 3551 * 3552 * <p>This method throws {@link android.content.ActivityNotFoundException} 3553 * if there was no Activity found to run the given Intent. 3554 * 3555 * @param intent The intent to start. 3556 * @param options Additional options for how the Activity should be started. 3557 * See {@link android.content.Context#startActivity(Intent, Bundle) 3558 * Context.startActivity(Intent, Bundle)} for more details. 3559 * 3560 * @throws android.content.ActivityNotFoundException 3561 * 3562 * @see {@link #startActivity(Intent)} 3563 * @see #startActivityForResult 3564 */ 3565 @Override 3566 public void startActivity(Intent intent, Bundle options) { 3567 if (options != null) { 3568 startActivityForResult(intent, -1, options); 3569 } else { 3570 // Note we want to go through this call for compatibility with 3571 // applications that may have overridden the method. 3572 startActivityForResult(intent, -1); 3573 } 3574 } 3575 3576 /** 3577 * Same as {@link #startActivities(Intent[], Bundle)} with no options 3578 * specified. 3579 * 3580 * @param intents The intents to start. 3581 * 3582 * @throws android.content.ActivityNotFoundException 3583 * 3584 * @see {@link #startActivities(Intent[], Bundle)} 3585 * @see #startActivityForResult 3586 */ 3587 @Override 3588 public void startActivities(Intent[] intents) { 3589 startActivities(intents, null); 3590 } 3591 3592 /** 3593 * Launch a new activity. You will not receive any information about when 3594 * the activity exits. This implementation overrides the base version, 3595 * providing information about 3596 * the activity performing the launch. Because of this additional 3597 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3598 * required; if not specified, the new activity will be added to the 3599 * task of the caller. 3600 * 3601 * <p>This method throws {@link android.content.ActivityNotFoundException} 3602 * if there was no Activity found to run the given Intent. 3603 * 3604 * @param intents The intents to start. 3605 * @param options Additional options for how the Activity should be started. 3606 * See {@link android.content.Context#startActivity(Intent, Bundle) 3607 * Context.startActivity(Intent, Bundle)} for more details. 3608 * 3609 * @throws android.content.ActivityNotFoundException 3610 * 3611 * @see {@link #startActivities(Intent[])} 3612 * @see #startActivityForResult 3613 */ 3614 @Override 3615 public void startActivities(Intent[] intents, Bundle options) { 3616 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3617 mToken, this, intents, options); 3618 } 3619 3620 /** 3621 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 3622 * with no options. 3623 * 3624 * @param intent The IntentSender to launch. 3625 * @param fillInIntent If non-null, this will be provided as the 3626 * intent parameter to {@link IntentSender#sendIntent}. 3627 * @param flagsMask Intent flags in the original IntentSender that you 3628 * would like to change. 3629 * @param flagsValues Desired values for any bits set in 3630 * <var>flagsMask</var> 3631 * @param extraFlags Always set to 0. 3632 */ 3633 public void startIntentSender(IntentSender intent, 3634 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3635 throws IntentSender.SendIntentException { 3636 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 3637 extraFlags, null); 3638 } 3639 3640 /** 3641 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 3642 * to start; see 3643 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 3644 * for more information. 3645 * 3646 * @param intent The IntentSender to launch. 3647 * @param fillInIntent If non-null, this will be provided as the 3648 * intent parameter to {@link IntentSender#sendIntent}. 3649 * @param flagsMask Intent flags in the original IntentSender that you 3650 * would like to change. 3651 * @param flagsValues Desired values for any bits set in 3652 * <var>flagsMask</var> 3653 * @param extraFlags Always set to 0. 3654 * @param options Additional options for how the Activity should be started. 3655 * See {@link android.content.Context#startActivity(Intent, Bundle) 3656 * Context.startActivity(Intent, Bundle)} for more details. If options 3657 * have also been supplied by the IntentSender, options given here will 3658 * override any that conflict with those given by the IntentSender. 3659 */ 3660 public void startIntentSender(IntentSender intent, 3661 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3662 Bundle options) throws IntentSender.SendIntentException { 3663 if (options != null) { 3664 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3665 flagsValues, extraFlags, options); 3666 } else { 3667 // Note we want to go through this call for compatibility with 3668 // applications that may have overridden the method. 3669 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3670 flagsValues, extraFlags); 3671 } 3672 } 3673 3674 /** 3675 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 3676 * with no options. 3677 * 3678 * @param intent The intent to start. 3679 * @param requestCode If >= 0, this code will be returned in 3680 * onActivityResult() when the activity exits, as described in 3681 * {@link #startActivityForResult}. 3682 * 3683 * @return If a new activity was launched then true is returned; otherwise 3684 * false is returned and you must handle the Intent yourself. 3685 * 3686 * @see #startActivity 3687 * @see #startActivityForResult 3688 */ 3689 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3690 return startActivityIfNeeded(intent, requestCode, null); 3691 } 3692 3693 /** 3694 * A special variation to launch an activity only if a new activity 3695 * instance is needed to handle the given Intent. In other words, this is 3696 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3697 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3698 * singleTask or singleTop 3699 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3700 * and the activity 3701 * that handles <var>intent</var> is the same as your currently running 3702 * activity, then a new instance is not needed. In this case, instead of 3703 * the normal behavior of calling {@link #onNewIntent} this function will 3704 * return and you can handle the Intent yourself. 3705 * 3706 * <p>This function can only be called from a top-level activity; if it is 3707 * called from a child activity, a runtime exception will be thrown. 3708 * 3709 * @param intent The intent to start. 3710 * @param requestCode If >= 0, this code will be returned in 3711 * onActivityResult() when the activity exits, as described in 3712 * {@link #startActivityForResult}. 3713 * @param options Additional options for how the Activity should be started. 3714 * See {@link android.content.Context#startActivity(Intent, Bundle) 3715 * Context.startActivity(Intent, Bundle)} for more details. 3716 * 3717 * @return If a new activity was launched then true is returned; otherwise 3718 * false is returned and you must handle the Intent yourself. 3719 * 3720 * @see #startActivity 3721 * @see #startActivityForResult 3722 */ 3723 public boolean startActivityIfNeeded(Intent intent, int requestCode, Bundle options) { 3724 if (mParent == null) { 3725 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 3726 try { 3727 intent.setAllowFds(false); 3728 result = ActivityManagerNative.getDefault() 3729 .startActivity(mMainThread.getApplicationThread(), 3730 intent, intent.resolveTypeIfNeeded(getContentResolver()), 3731 mToken, mEmbeddedID, requestCode, 3732 ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, null, 3733 options); 3734 } catch (RemoteException e) { 3735 // Empty 3736 } 3737 3738 Instrumentation.checkStartActivityResult(result, intent); 3739 3740 if (requestCode >= 0) { 3741 // If this start is requesting a result, we can avoid making 3742 // the activity visible until the result is received. Setting 3743 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3744 // activity hidden during this time, to avoid flickering. 3745 // This can only be done when a result is requested because 3746 // that guarantees we will get information back when the 3747 // activity is finished, no matter what happens to it. 3748 mStartedActivity = true; 3749 } 3750 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 3751 } 3752 3753 throw new UnsupportedOperationException( 3754 "startActivityIfNeeded can only be called from a top-level activity"); 3755 } 3756 3757 /** 3758 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 3759 * no options. 3760 * 3761 * @param intent The intent to dispatch to the next activity. For 3762 * correct behavior, this must be the same as the Intent that started 3763 * your own activity; the only changes you can make are to the extras 3764 * inside of it. 3765 * 3766 * @return Returns a boolean indicating whether there was another Activity 3767 * to start: true if there was a next activity to start, false if there 3768 * wasn't. In general, if true is returned you will then want to call 3769 * finish() on yourself. 3770 */ 3771 public boolean startNextMatchingActivity(Intent intent) { 3772 return startNextMatchingActivity(intent, null); 3773 } 3774 3775 /** 3776 * Special version of starting an activity, for use when you are replacing 3777 * other activity components. You can use this to hand the Intent off 3778 * to the next Activity that can handle it. You typically call this in 3779 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3780 * 3781 * @param intent The intent to dispatch to the next activity. For 3782 * correct behavior, this must be the same as the Intent that started 3783 * your own activity; the only changes you can make are to the extras 3784 * inside of it. 3785 * @param options Additional options for how the Activity should be started. 3786 * See {@link android.content.Context#startActivity(Intent, Bundle) 3787 * Context.startActivity(Intent, Bundle)} for more details. 3788 * 3789 * @return Returns a boolean indicating whether there was another Activity 3790 * to start: true if there was a next activity to start, false if there 3791 * wasn't. In general, if true is returned you will then want to call 3792 * finish() on yourself. 3793 */ 3794 public boolean startNextMatchingActivity(Intent intent, Bundle options) { 3795 if (mParent == null) { 3796 try { 3797 intent.setAllowFds(false); 3798 return ActivityManagerNative.getDefault() 3799 .startNextMatchingActivity(mToken, intent, options); 3800 } catch (RemoteException e) { 3801 // Empty 3802 } 3803 return false; 3804 } 3805 3806 throw new UnsupportedOperationException( 3807 "startNextMatchingActivity can only be called from a top-level activity"); 3808 } 3809 3810 /** 3811 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 3812 * with no options. 3813 * 3814 * @param child The activity making the call. 3815 * @param intent The intent to start. 3816 * @param requestCode Reply request code. < 0 if reply is not requested. 3817 * 3818 * @throws android.content.ActivityNotFoundException 3819 * 3820 * @see #startActivity 3821 * @see #startActivityForResult 3822 */ 3823 public void startActivityFromChild(Activity child, Intent intent, 3824 int requestCode) { 3825 startActivityFromChild(child, intent, requestCode, null); 3826 } 3827 3828 /** 3829 * This is called when a child activity of this one calls its 3830 * {@link #startActivity} or {@link #startActivityForResult} method. 3831 * 3832 * <p>This method throws {@link android.content.ActivityNotFoundException} 3833 * if there was no Activity found to run the given Intent. 3834 * 3835 * @param child The activity making the call. 3836 * @param intent The intent to start. 3837 * @param requestCode Reply request code. < 0 if reply is not requested. 3838 * @param options Additional options for how the Activity should be started. 3839 * See {@link android.content.Context#startActivity(Intent, Bundle) 3840 * Context.startActivity(Intent, Bundle)} for more details. 3841 * 3842 * @throws android.content.ActivityNotFoundException 3843 * 3844 * @see #startActivity 3845 * @see #startActivityForResult 3846 */ 3847 public void startActivityFromChild(Activity child, Intent intent, 3848 int requestCode, Bundle options) { 3849 Instrumentation.ActivityResult ar = 3850 mInstrumentation.execStartActivity( 3851 this, mMainThread.getApplicationThread(), mToken, child, 3852 intent, requestCode, options); 3853 if (ar != null) { 3854 mMainThread.sendActivityResult( 3855 mToken, child.mEmbeddedID, requestCode, 3856 ar.getResultCode(), ar.getResultData()); 3857 } 3858 } 3859 3860 /** 3861 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 3862 * with no options. 3863 * 3864 * @param fragment The fragment making the call. 3865 * @param intent The intent to start. 3866 * @param requestCode Reply request code. < 0 if reply is not requested. 3867 * 3868 * @throws android.content.ActivityNotFoundException 3869 * 3870 * @see Fragment#startActivity 3871 * @see Fragment#startActivityForResult 3872 */ 3873 public void startActivityFromFragment(Fragment fragment, Intent intent, 3874 int requestCode) { 3875 startActivityFromFragment(fragment, intent, requestCode, null); 3876 } 3877 3878 /** 3879 * This is called when a Fragment in this activity calls its 3880 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3881 * method. 3882 * 3883 * <p>This method throws {@link android.content.ActivityNotFoundException} 3884 * if there was no Activity found to run the given Intent. 3885 * 3886 * @param fragment The fragment making the call. 3887 * @param intent The intent to start. 3888 * @param requestCode Reply request code. < 0 if reply is not requested. 3889 * @param options Additional options for how the Activity should be started. 3890 * See {@link android.content.Context#startActivity(Intent, Bundle) 3891 * Context.startActivity(Intent, Bundle)} for more details. 3892 * 3893 * @throws android.content.ActivityNotFoundException 3894 * 3895 * @see Fragment#startActivity 3896 * @see Fragment#startActivityForResult 3897 */ 3898 public void startActivityFromFragment(Fragment fragment, Intent intent, 3899 int requestCode, Bundle options) { 3900 Instrumentation.ActivityResult ar = 3901 mInstrumentation.execStartActivity( 3902 this, mMainThread.getApplicationThread(), mToken, fragment, 3903 intent, requestCode, options); 3904 if (ar != null) { 3905 mMainThread.sendActivityResult( 3906 mToken, fragment.mWho, requestCode, 3907 ar.getResultCode(), ar.getResultData()); 3908 } 3909 } 3910 3911 /** 3912 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 3913 * int, Intent, int, int, int, Bundle)} with no options. 3914 */ 3915 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3916 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3917 int extraFlags) 3918 throws IntentSender.SendIntentException { 3919 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 3920 flagsMask, flagsValues, extraFlags, null); 3921 } 3922 3923 /** 3924 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3925 * taking a IntentSender; see 3926 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3927 * for more information. 3928 */ 3929 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3930 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3931 int extraFlags, Bundle options) 3932 throws IntentSender.SendIntentException { 3933 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3934 flagsMask, flagsValues, child, options); 3935 } 3936 3937 /** 3938 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3939 * or {@link #finish} to specify an explicit transition animation to 3940 * perform next. 3941 * 3942 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 3943 * to using this with starting activities is to supply the desired animation 3944 * information through a {@link ActivityOptions} bundle to 3945 * {@link #startActivity(Intent, Bundle) or a related function. This allows 3946 * you to specify a custom animation even when starting an activity from 3947 * outside the context of the current top activity. 3948 * 3949 * @param enterAnim A resource ID of the animation resource to use for 3950 * the incoming activity. Use 0 for no animation. 3951 * @param exitAnim A resource ID of the animation resource to use for 3952 * the outgoing activity. Use 0 for no animation. 3953 */ 3954 public void overridePendingTransition(int enterAnim, int exitAnim) { 3955 try { 3956 ActivityManagerNative.getDefault().overridePendingTransition( 3957 mToken, getPackageName(), enterAnim, exitAnim); 3958 } catch (RemoteException e) { 3959 } 3960 } 3961 3962 /** 3963 * Call this to set the result that your activity will return to its 3964 * caller. 3965 * 3966 * @param resultCode The result code to propagate back to the originating 3967 * activity, often RESULT_CANCELED or RESULT_OK 3968 * 3969 * @see #RESULT_CANCELED 3970 * @see #RESULT_OK 3971 * @see #RESULT_FIRST_USER 3972 * @see #setResult(int, Intent) 3973 */ 3974 public final void setResult(int resultCode) { 3975 synchronized (this) { 3976 mResultCode = resultCode; 3977 mResultData = null; 3978 } 3979 } 3980 3981 /** 3982 * Call this to set the result that your activity will return to its 3983 * caller. 3984 * 3985 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 3986 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 3987 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 3988 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 3989 * Activity receiving the result access to the specific URIs in the Intent. 3990 * Access will remain until the Activity has finished (it will remain across the hosting 3991 * process being killed and other temporary destruction) and will be added 3992 * to any existing set of URI permissions it already holds. 3993 * 3994 * @param resultCode The result code to propagate back to the originating 3995 * activity, often RESULT_CANCELED or RESULT_OK 3996 * @param data The data to propagate back to the originating activity. 3997 * 3998 * @see #RESULT_CANCELED 3999 * @see #RESULT_OK 4000 * @see #RESULT_FIRST_USER 4001 * @see #setResult(int) 4002 */ 4003 public final void setResult(int resultCode, Intent data) { 4004 synchronized (this) { 4005 mResultCode = resultCode; 4006 mResultData = data; 4007 } 4008 } 4009 4010 /** 4011 * Return the name of the package that invoked this activity. This is who 4012 * the data in {@link #setResult setResult()} will be sent to. You can 4013 * use this information to validate that the recipient is allowed to 4014 * receive the data. 4015 * 4016 * <p>Note: if the calling activity is not expecting a result (that is it 4017 * did not use the {@link #startActivityForResult} 4018 * form that includes a request code), then the calling package will be 4019 * null. 4020 * 4021 * @return The package of the activity that will receive your 4022 * reply, or null if none. 4023 */ 4024 public String getCallingPackage() { 4025 try { 4026 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4027 } catch (RemoteException e) { 4028 return null; 4029 } 4030 } 4031 4032 /** 4033 * Return the name of the activity that invoked this activity. This is 4034 * who the data in {@link #setResult setResult()} will be sent to. You 4035 * can use this information to validate that the recipient is allowed to 4036 * receive the data. 4037 * 4038 * <p>Note: if the calling activity is not expecting a result (that is it 4039 * did not use the {@link #startActivityForResult} 4040 * form that includes a request code), then the calling package will be 4041 * null. 4042 * 4043 * @return String The full name of the activity that will receive your 4044 * reply, or null if none. 4045 */ 4046 public ComponentName getCallingActivity() { 4047 try { 4048 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4049 } catch (RemoteException e) { 4050 return null; 4051 } 4052 } 4053 4054 /** 4055 * Control whether this activity's main window is visible. This is intended 4056 * only for the special case of an activity that is not going to show a 4057 * UI itself, but can't just finish prior to onResume() because it needs 4058 * to wait for a service binding or such. Setting this to false allows 4059 * you to prevent your UI from being shown during that time. 4060 * 4061 * <p>The default value for this is taken from the 4062 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4063 */ 4064 public void setVisible(boolean visible) { 4065 if (mVisibleFromClient != visible) { 4066 mVisibleFromClient = visible; 4067 if (mVisibleFromServer) { 4068 if (visible) makeVisible(); 4069 else mDecor.setVisibility(View.INVISIBLE); 4070 } 4071 } 4072 } 4073 4074 void makeVisible() { 4075 if (!mWindowAdded) { 4076 ViewManager wm = getWindowManager(); 4077 wm.addView(mDecor, getWindow().getAttributes()); 4078 mWindowAdded = true; 4079 } 4080 mDecor.setVisibility(View.VISIBLE); 4081 } 4082 4083 /** 4084 * Check to see whether this activity is in the process of finishing, 4085 * either because you called {@link #finish} on it or someone else 4086 * has requested that it finished. This is often used in 4087 * {@link #onPause} to determine whether the activity is simply pausing or 4088 * completely finishing. 4089 * 4090 * @return If the activity is finishing, returns true; else returns false. 4091 * 4092 * @see #finish 4093 */ 4094 public boolean isFinishing() { 4095 return mFinished; 4096 } 4097 4098 /** 4099 * Returns true if the final {@link #onDestroy()} call has been made 4100 * on the Activity, so this instance is now dead. 4101 */ 4102 public boolean isDestroyed() { 4103 return mDestroyed; 4104 } 4105 4106 /** 4107 * Check to see whether this activity is in the process of being destroyed in order to be 4108 * recreated with a new configuration. This is often used in 4109 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4110 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4111 * 4112 * @return If the activity is being torn down in order to be recreated with a new configuration, 4113 * returns true; else returns false. 4114 */ 4115 public boolean isChangingConfigurations() { 4116 return mChangingConfigurations; 4117 } 4118 4119 /** 4120 * Cause this Activity to be recreated with a new instance. This results 4121 * in essentially the same flow as when the Activity is created due to 4122 * a configuration change -- the current instance will go through its 4123 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4124 */ 4125 public void recreate() { 4126 if (mParent != null) { 4127 throw new IllegalStateException("Can only be called on top-level activity"); 4128 } 4129 if (Looper.myLooper() != mMainThread.getLooper()) { 4130 throw new IllegalStateException("Must be called from main thread"); 4131 } 4132 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 4133 } 4134 4135 /** 4136 * Call this when your activity is done and should be closed. The 4137 * ActivityResult is propagated back to whoever launched you via 4138 * onActivityResult(). 4139 */ 4140 public void finish() { 4141 if (mParent == null) { 4142 int resultCode; 4143 Intent resultData; 4144 synchronized (this) { 4145 resultCode = mResultCode; 4146 resultData = mResultData; 4147 } 4148 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4149 try { 4150 if (resultData != null) { 4151 resultData.setAllowFds(false); 4152 } 4153 if (ActivityManagerNative.getDefault() 4154 .finishActivity(mToken, resultCode, resultData)) { 4155 mFinished = true; 4156 } 4157 } catch (RemoteException e) { 4158 // Empty 4159 } 4160 } else { 4161 mParent.finishFromChild(this); 4162 } 4163 } 4164 4165 /** 4166 * Finish this activity as well as all activities immediately below it 4167 * in the current task that have the same affinity. This is typically 4168 * used when an application can be launched on to another task (such as 4169 * from an ACTION_VIEW of a content type it understands) and the user 4170 * has used the up navigation to switch out of the current task and in 4171 * to its own task. In this case, if the user has navigated down into 4172 * any other activities of the second application, all of those should 4173 * be removed from the original task as part of the task switch. 4174 * 4175 * <p>Note that this finish does <em>not</em> allow you to deliver results 4176 * to the previous activity, and an exception will be thrown if you are trying 4177 * to do so.</p> 4178 */ 4179 public void finishAffinity() { 4180 if (mParent != null) { 4181 throw new IllegalStateException("Can not be called from an embedded activity"); 4182 } 4183 if (mResultCode != RESULT_CANCELED || mResultData != null) { 4184 throw new IllegalStateException("Can not be called to deliver a result"); 4185 } 4186 try { 4187 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 4188 mFinished = true; 4189 } 4190 } catch (RemoteException e) { 4191 // Empty 4192 } 4193 } 4194 4195 /** 4196 * This is called when a child activity of this one calls its 4197 * {@link #finish} method. The default implementation simply calls 4198 * finish() on this activity (the parent), finishing the entire group. 4199 * 4200 * @param child The activity making the call. 4201 * 4202 * @see #finish 4203 */ 4204 public void finishFromChild(Activity child) { 4205 finish(); 4206 } 4207 4208 /** 4209 * Force finish another activity that you had previously started with 4210 * {@link #startActivityForResult}. 4211 * 4212 * @param requestCode The request code of the activity that you had 4213 * given to startActivityForResult(). If there are multiple 4214 * activities started with this request code, they 4215 * will all be finished. 4216 */ 4217 public void finishActivity(int requestCode) { 4218 if (mParent == null) { 4219 try { 4220 ActivityManagerNative.getDefault() 4221 .finishSubActivity(mToken, mEmbeddedID, requestCode); 4222 } catch (RemoteException e) { 4223 // Empty 4224 } 4225 } else { 4226 mParent.finishActivityFromChild(this, requestCode); 4227 } 4228 } 4229 4230 /** 4231 * This is called when a child activity of this one calls its 4232 * finishActivity(). 4233 * 4234 * @param child The activity making the call. 4235 * @param requestCode Request code that had been used to start the 4236 * activity. 4237 */ 4238 public void finishActivityFromChild(Activity child, int requestCode) { 4239 try { 4240 ActivityManagerNative.getDefault() 4241 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 4242 } catch (RemoteException e) { 4243 // Empty 4244 } 4245 } 4246 4247 /** 4248 * Called when an activity you launched exits, giving you the requestCode 4249 * you started it with, the resultCode it returned, and any additional 4250 * data from it. The <var>resultCode</var> will be 4251 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 4252 * didn't return any result, or crashed during its operation. 4253 * 4254 * <p>You will receive this call immediately before onResume() when your 4255 * activity is re-starting. 4256 * 4257 * @param requestCode The integer request code originally supplied to 4258 * startActivityForResult(), allowing you to identify who this 4259 * result came from. 4260 * @param resultCode The integer result code returned by the child activity 4261 * through its setResult(). 4262 * @param data An Intent, which can return result data to the caller 4263 * (various data can be attached to Intent "extras"). 4264 * 4265 * @see #startActivityForResult 4266 * @see #createPendingResult 4267 * @see #setResult(int) 4268 */ 4269 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 4270 } 4271 4272 /** 4273 * Create a new PendingIntent object which you can hand to others 4274 * for them to use to send result data back to your 4275 * {@link #onActivityResult} callback. The created object will be either 4276 * one-shot (becoming invalid after a result is sent back) or multiple 4277 * (allowing any number of results to be sent through it). 4278 * 4279 * @param requestCode Private request code for the sender that will be 4280 * associated with the result data when it is returned. The sender can not 4281 * modify this value, allowing you to identify incoming results. 4282 * @param data Default data to supply in the result, which may be modified 4283 * by the sender. 4284 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 4285 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 4286 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 4287 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 4288 * or any of the flags as supported by 4289 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 4290 * of the intent that can be supplied when the actual send happens. 4291 * 4292 * @return Returns an existing or new PendingIntent matching the given 4293 * parameters. May return null only if 4294 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 4295 * supplied. 4296 * 4297 * @see PendingIntent 4298 */ 4299 public PendingIntent createPendingResult(int requestCode, Intent data, 4300 int flags) { 4301 String packageName = getPackageName(); 4302 try { 4303 data.setAllowFds(false); 4304 IIntentSender target = 4305 ActivityManagerNative.getDefault().getIntentSender( 4306 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 4307 mParent == null ? mToken : mParent.mToken, 4308 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 4309 UserHandle.myUserId()); 4310 return target != null ? new PendingIntent(target) : null; 4311 } catch (RemoteException e) { 4312 // Empty 4313 } 4314 return null; 4315 } 4316 4317 /** 4318 * Change the desired orientation of this activity. If the activity 4319 * is currently in the foreground or otherwise impacting the screen 4320 * orientation, the screen will immediately be changed (possibly causing 4321 * the activity to be restarted). Otherwise, this will be used the next 4322 * time the activity is visible. 4323 * 4324 * @param requestedOrientation An orientation constant as used in 4325 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4326 */ 4327 public void setRequestedOrientation(int requestedOrientation) { 4328 if (mParent == null) { 4329 try { 4330 ActivityManagerNative.getDefault().setRequestedOrientation( 4331 mToken, requestedOrientation); 4332 } catch (RemoteException e) { 4333 // Empty 4334 } 4335 } else { 4336 mParent.setRequestedOrientation(requestedOrientation); 4337 } 4338 } 4339 4340 /** 4341 * Return the current requested orientation of the activity. This will 4342 * either be the orientation requested in its component's manifest, or 4343 * the last requested orientation given to 4344 * {@link #setRequestedOrientation(int)}. 4345 * 4346 * @return Returns an orientation constant as used in 4347 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4348 */ 4349 public int getRequestedOrientation() { 4350 if (mParent == null) { 4351 try { 4352 return ActivityManagerNative.getDefault() 4353 .getRequestedOrientation(mToken); 4354 } catch (RemoteException e) { 4355 // Empty 4356 } 4357 } else { 4358 return mParent.getRequestedOrientation(); 4359 } 4360 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4361 } 4362 4363 /** 4364 * Return the identifier of the task this activity is in. This identifier 4365 * will remain the same for the lifetime of the activity. 4366 * 4367 * @return Task identifier, an opaque integer. 4368 */ 4369 public int getTaskId() { 4370 try { 4371 return ActivityManagerNative.getDefault() 4372 .getTaskForActivity(mToken, false); 4373 } catch (RemoteException e) { 4374 return -1; 4375 } 4376 } 4377 4378 /** 4379 * Return whether this activity is the root of a task. The root is the 4380 * first activity in a task. 4381 * 4382 * @return True if this is the root activity, else false. 4383 */ 4384 public boolean isTaskRoot() { 4385 try { 4386 return ActivityManagerNative.getDefault() 4387 .getTaskForActivity(mToken, true) >= 0; 4388 } catch (RemoteException e) { 4389 return false; 4390 } 4391 } 4392 4393 /** 4394 * Move the task containing this activity to the back of the activity 4395 * stack. The activity's order within the task is unchanged. 4396 * 4397 * @param nonRoot If false then this only works if the activity is the root 4398 * of a task; if true it will work for any activity in 4399 * a task. 4400 * 4401 * @return If the task was moved (or it was already at the 4402 * back) true is returned, else false. 4403 */ 4404 public boolean moveTaskToBack(boolean nonRoot) { 4405 try { 4406 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 4407 mToken, nonRoot); 4408 } catch (RemoteException e) { 4409 // Empty 4410 } 4411 return false; 4412 } 4413 4414 /** 4415 * Returns class name for this activity with the package prefix removed. 4416 * This is the default name used to read and write settings. 4417 * 4418 * @return The local class name. 4419 */ 4420 public String getLocalClassName() { 4421 final String pkg = getPackageName(); 4422 final String cls = mComponent.getClassName(); 4423 int packageLen = pkg.length(); 4424 if (!cls.startsWith(pkg) || cls.length() <= packageLen 4425 || cls.charAt(packageLen) != '.') { 4426 return cls; 4427 } 4428 return cls.substring(packageLen+1); 4429 } 4430 4431 /** 4432 * Returns complete component name of this activity. 4433 * 4434 * @return Returns the complete component name for this activity 4435 */ 4436 public ComponentName getComponentName() 4437 { 4438 return mComponent; 4439 } 4440 4441 /** 4442 * Retrieve a {@link SharedPreferences} object for accessing preferences 4443 * that are private to this activity. This simply calls the underlying 4444 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 4445 * class name as the preferences name. 4446 * 4447 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 4448 * operation, {@link #MODE_WORLD_READABLE} and 4449 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 4450 * 4451 * @return Returns the single SharedPreferences instance that can be used 4452 * to retrieve and modify the preference values. 4453 */ 4454 public SharedPreferences getPreferences(int mode) { 4455 return getSharedPreferences(getLocalClassName(), mode); 4456 } 4457 4458 private void ensureSearchManager() { 4459 if (mSearchManager != null) { 4460 return; 4461 } 4462 4463 mSearchManager = new SearchManager(this, null); 4464 } 4465 4466 @Override 4467 public Object getSystemService(String name) { 4468 if (getBaseContext() == null) { 4469 throw new IllegalStateException( 4470 "System services not available to Activities before onCreate()"); 4471 } 4472 4473 if (WINDOW_SERVICE.equals(name)) { 4474 return mWindowManager; 4475 } else if (SEARCH_SERVICE.equals(name)) { 4476 ensureSearchManager(); 4477 return mSearchManager; 4478 } 4479 return super.getSystemService(name); 4480 } 4481 4482 /** 4483 * Change the title associated with this activity. If this is a 4484 * top-level activity, the title for its window will change. If it 4485 * is an embedded activity, the parent can do whatever it wants 4486 * with it. 4487 */ 4488 public void setTitle(CharSequence title) { 4489 mTitle = title; 4490 onTitleChanged(title, mTitleColor); 4491 4492 if (mParent != null) { 4493 mParent.onChildTitleChanged(this, title); 4494 } 4495 } 4496 4497 /** 4498 * Change the title associated with this activity. If this is a 4499 * top-level activity, the title for its window will change. If it 4500 * is an embedded activity, the parent can do whatever it wants 4501 * with it. 4502 */ 4503 public void setTitle(int titleId) { 4504 setTitle(getText(titleId)); 4505 } 4506 4507 public void setTitleColor(int textColor) { 4508 mTitleColor = textColor; 4509 onTitleChanged(mTitle, textColor); 4510 } 4511 4512 public final CharSequence getTitle() { 4513 return mTitle; 4514 } 4515 4516 public final int getTitleColor() { 4517 return mTitleColor; 4518 } 4519 4520 protected void onTitleChanged(CharSequence title, int color) { 4521 if (mTitleReady) { 4522 final Window win = getWindow(); 4523 if (win != null) { 4524 win.setTitle(title); 4525 if (color != 0) { 4526 win.setTitleColor(color); 4527 } 4528 } 4529 } 4530 } 4531 4532 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4533 } 4534 4535 /** 4536 * Sets the visibility of the progress bar in the title. 4537 * <p> 4538 * In order for the progress bar to be shown, the feature must be requested 4539 * via {@link #requestWindowFeature(int)}. 4540 * 4541 * @param visible Whether to show the progress bars in the title. 4542 */ 4543 public final void setProgressBarVisibility(boolean visible) { 4544 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4545 Window.PROGRESS_VISIBILITY_OFF); 4546 } 4547 4548 /** 4549 * Sets the visibility of the indeterminate progress bar in the title. 4550 * <p> 4551 * In order for the progress bar to be shown, the feature must be requested 4552 * via {@link #requestWindowFeature(int)}. 4553 * 4554 * @param visible Whether to show the progress bars in the title. 4555 */ 4556 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4557 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4558 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4559 } 4560 4561 /** 4562 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4563 * is always indeterminate). 4564 * <p> 4565 * In order for the progress bar to be shown, the feature must be requested 4566 * via {@link #requestWindowFeature(int)}. 4567 * 4568 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4569 */ 4570 public final void setProgressBarIndeterminate(boolean indeterminate) { 4571 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4572 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4573 } 4574 4575 /** 4576 * Sets the progress for the progress bars in the title. 4577 * <p> 4578 * In order for the progress bar to be shown, the feature must be requested 4579 * via {@link #requestWindowFeature(int)}. 4580 * 4581 * @param progress The progress for the progress bar. Valid ranges are from 4582 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4583 * bar will be completely filled and will fade out. 4584 */ 4585 public final void setProgress(int progress) { 4586 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4587 } 4588 4589 /** 4590 * Sets the secondary progress for the progress bar in the title. This 4591 * progress is drawn between the primary progress (set via 4592 * {@link #setProgress(int)} and the background. It can be ideal for media 4593 * scenarios such as showing the buffering progress while the default 4594 * progress shows the play progress. 4595 * <p> 4596 * In order for the progress bar to be shown, the feature must be requested 4597 * via {@link #requestWindowFeature(int)}. 4598 * 4599 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4600 * 0 to 10000 (both inclusive). 4601 */ 4602 public final void setSecondaryProgress(int secondaryProgress) { 4603 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4604 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4605 } 4606 4607 /** 4608 * Suggests an audio stream whose volume should be changed by the hardware 4609 * volume controls. 4610 * <p> 4611 * The suggested audio stream will be tied to the window of this Activity. 4612 * If the Activity is switched, the stream set here is no longer the 4613 * suggested stream. The client does not need to save and restore the old 4614 * suggested stream value in onPause and onResume. 4615 * 4616 * @param streamType The type of the audio stream whose volume should be 4617 * changed by the hardware volume controls. It is not guaranteed that 4618 * the hardware volume controls will always change this stream's 4619 * volume (for example, if a call is in progress, its stream's volume 4620 * may be changed instead). To reset back to the default, use 4621 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4622 */ 4623 public final void setVolumeControlStream(int streamType) { 4624 getWindow().setVolumeControlStream(streamType); 4625 } 4626 4627 /** 4628 * Gets the suggested audio stream whose volume should be changed by the 4629 * harwdare volume controls. 4630 * 4631 * @return The suggested audio stream type whose volume should be changed by 4632 * the hardware volume controls. 4633 * @see #setVolumeControlStream(int) 4634 */ 4635 public final int getVolumeControlStream() { 4636 return getWindow().getVolumeControlStream(); 4637 } 4638 4639 /** 4640 * Runs the specified action on the UI thread. If the current thread is the UI 4641 * thread, then the action is executed immediately. If the current thread is 4642 * not the UI thread, the action is posted to the event queue of the UI thread. 4643 * 4644 * @param action the action to run on the UI thread 4645 */ 4646 public final void runOnUiThread(Runnable action) { 4647 if (Thread.currentThread() != mUiThread) { 4648 mHandler.post(action); 4649 } else { 4650 action.run(); 4651 } 4652 } 4653 4654 /** 4655 * Standard implementation of 4656 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4657 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4658 * This implementation does nothing and is for 4659 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4660 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4661 * 4662 * @see android.view.LayoutInflater#createView 4663 * @see android.view.Window#getLayoutInflater 4664 */ 4665 public View onCreateView(String name, Context context, AttributeSet attrs) { 4666 return null; 4667 } 4668 4669 /** 4670 * Standard implementation of 4671 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4672 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4673 * This implementation handles <fragment> tags to embed fragments inside 4674 * of the activity. 4675 * 4676 * @see android.view.LayoutInflater#createView 4677 * @see android.view.Window#getLayoutInflater 4678 */ 4679 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4680 if (!"fragment".equals(name)) { 4681 return onCreateView(name, context, attrs); 4682 } 4683 4684 String fname = attrs.getAttributeValue(null, "class"); 4685 TypedArray a = 4686 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4687 if (fname == null) { 4688 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4689 } 4690 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4691 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4692 a.recycle(); 4693 4694 int containerId = parent != null ? parent.getId() : 0; 4695 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4696 throw new IllegalArgumentException(attrs.getPositionDescription() 4697 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4698 } 4699 4700 // If we restored from a previous state, we may already have 4701 // instantiated this fragment from the state and should use 4702 // that instance instead of making a new one. 4703 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4704 if (fragment == null && tag != null) { 4705 fragment = mFragments.findFragmentByTag(tag); 4706 } 4707 if (fragment == null && containerId != View.NO_ID) { 4708 fragment = mFragments.findFragmentById(containerId); 4709 } 4710 4711 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4712 + Integer.toHexString(id) + " fname=" + fname 4713 + " existing=" + fragment); 4714 if (fragment == null) { 4715 fragment = Fragment.instantiate(this, fname); 4716 fragment.mFromLayout = true; 4717 fragment.mFragmentId = id != 0 ? id : containerId; 4718 fragment.mContainerId = containerId; 4719 fragment.mTag = tag; 4720 fragment.mInLayout = true; 4721 fragment.mFragmentManager = mFragments; 4722 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4723 mFragments.addFragment(fragment, true); 4724 4725 } else if (fragment.mInLayout) { 4726 // A fragment already exists and it is not one we restored from 4727 // previous state. 4728 throw new IllegalArgumentException(attrs.getPositionDescription() 4729 + ": Duplicate id 0x" + Integer.toHexString(id) 4730 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4731 + " with another fragment for " + fname); 4732 } else { 4733 // This fragment was retained from a previous instance; get it 4734 // going now. 4735 fragment.mInLayout = true; 4736 // If this fragment is newly instantiated (either right now, or 4737 // from last saved state), then give it the attributes to 4738 // initialize itself. 4739 if (!fragment.mRetaining) { 4740 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4741 } 4742 mFragments.moveToState(fragment); 4743 } 4744 4745 if (fragment.mView == null) { 4746 throw new IllegalStateException("Fragment " + fname 4747 + " did not create a view."); 4748 } 4749 if (id != 0) { 4750 fragment.mView.setId(id); 4751 } 4752 if (fragment.mView.getTag() == null) { 4753 fragment.mView.setTag(tag); 4754 } 4755 return fragment.mView; 4756 } 4757 4758 /** 4759 * Print the Activity's state into the given stream. This gets invoked if 4760 * you run "adb shell dumpsys activity <activity_component_name>". 4761 * 4762 * @param prefix Desired prefix to prepend at each line of output. 4763 * @param fd The raw file descriptor that the dump is being sent to. 4764 * @param writer The PrintWriter to which you should dump your state. This will be 4765 * closed for you after you return. 4766 * @param args additional arguments to the dump request. 4767 */ 4768 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4769 dumpInner(prefix, fd, writer, args); 4770 } 4771 4772 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4773 writer.print(prefix); writer.print("Local Activity "); 4774 writer.print(Integer.toHexString(System.identityHashCode(this))); 4775 writer.println(" State:"); 4776 String innerPrefix = prefix + " "; 4777 writer.print(innerPrefix); writer.print("mResumed="); 4778 writer.print(mResumed); writer.print(" mStopped="); 4779 writer.print(mStopped); writer.print(" mFinished="); 4780 writer.println(mFinished); 4781 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4782 writer.println(mLoadersStarted); 4783 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4784 writer.println(mChangingConfigurations); 4785 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4786 writer.println(mCurrentConfig); 4787 if (mLoaderManager != null) { 4788 writer.print(prefix); writer.print("Loader Manager "); 4789 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4790 writer.println(":"); 4791 mLoaderManager.dump(prefix + " ", fd, writer, args); 4792 } 4793 mFragments.dump(prefix, fd, writer, args); 4794 writer.print(prefix); writer.println("View Hierarchy:"); 4795 dumpViewHierarchy(prefix + " ", writer, getWindow().getDecorView()); 4796 } 4797 4798 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 4799 writer.print(prefix); 4800 if (view == null) { 4801 writer.println("null"); 4802 return; 4803 } 4804 writer.println(view.toString()); 4805 if (!(view instanceof ViewGroup)) { 4806 return; 4807 } 4808 ViewGroup grp = (ViewGroup)view; 4809 final int N = grp.getChildCount(); 4810 if (N <= 0) { 4811 return; 4812 } 4813 prefix = prefix + " "; 4814 for (int i=0; i<N; i++) { 4815 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 4816 } 4817 } 4818 4819 /** 4820 * Bit indicating that this activity is "immersive" and should not be 4821 * interrupted by notifications if possible. 4822 * 4823 * This value is initially set by the manifest property 4824 * <code>android:immersive</code> but may be changed at runtime by 4825 * {@link #setImmersive}. 4826 * 4827 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4828 * @hide 4829 */ 4830 public boolean isImmersive() { 4831 try { 4832 return ActivityManagerNative.getDefault().isImmersive(mToken); 4833 } catch (RemoteException e) { 4834 return false; 4835 } 4836 } 4837 4838 /** 4839 * Adjust the current immersive mode setting. 4840 * 4841 * Note that changing this value will have no effect on the activity's 4842 * {@link android.content.pm.ActivityInfo} structure; that is, if 4843 * <code>android:immersive</code> is set to <code>true</code> 4844 * in the application's manifest entry for this activity, the {@link 4845 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4846 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4847 * FLAG_IMMERSIVE} bit set. 4848 * 4849 * @see #isImmersive 4850 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4851 * @hide 4852 */ 4853 public void setImmersive(boolean i) { 4854 try { 4855 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4856 } catch (RemoteException e) { 4857 // pass 4858 } 4859 } 4860 4861 /** 4862 * Start an action mode. 4863 * 4864 * @param callback Callback that will manage lifecycle events for this context mode 4865 * @return The ContextMode that was started, or null if it was canceled 4866 * 4867 * @see ActionMode 4868 */ 4869 public ActionMode startActionMode(ActionMode.Callback callback) { 4870 return mWindow.getDecorView().startActionMode(callback); 4871 } 4872 4873 /** 4874 * Give the Activity a chance to control the UI for an action mode requested 4875 * by the system. 4876 * 4877 * <p>Note: If you are looking for a notification callback that an action mode 4878 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4879 * 4880 * @param callback The callback that should control the new action mode 4881 * @return The new action mode, or <code>null</code> if the activity does not want to 4882 * provide special handling for this action mode. (It will be handled by the system.) 4883 */ 4884 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4885 initActionBar(); 4886 if (mActionBar != null) { 4887 return mActionBar.startActionMode(callback); 4888 } 4889 return null; 4890 } 4891 4892 /** 4893 * Notifies the Activity that an action mode has been started. 4894 * Activity subclasses overriding this method should call the superclass implementation. 4895 * 4896 * @param mode The new action mode. 4897 */ 4898 public void onActionModeStarted(ActionMode mode) { 4899 } 4900 4901 /** 4902 * Notifies the activity that an action mode has finished. 4903 * Activity subclasses overriding this method should call the superclass implementation. 4904 * 4905 * @param mode The action mode that just finished. 4906 */ 4907 public void onActionModeFinished(ActionMode mode) { 4908 } 4909 4910 /** 4911 * Returns true if the app should recreate the task when navigating 'up' from this activity 4912 * by using targetIntent. 4913 * 4914 * <p>If this method returns false the app can trivially call 4915 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 4916 * up navigation. If this method returns false, the app should synthesize a new task stack 4917 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 4918 * 4919 * @param targetIntent An intent representing the target destination for up navigation 4920 * @return true if navigating up should recreate a new task stack, false if the same task 4921 * should be used for the destination 4922 */ 4923 public boolean shouldUpRecreateTask(Intent targetIntent) { 4924 try { 4925 PackageManager pm = getPackageManager(); 4926 ComponentName cn = targetIntent.getComponent(); 4927 if (cn == null) { 4928 cn = targetIntent.resolveActivity(pm); 4929 } 4930 ActivityInfo info = pm.getActivityInfo(cn, 0); 4931 if (info.taskAffinity == null) { 4932 return false; 4933 } 4934 return !ActivityManagerNative.getDefault() 4935 .targetTaskAffinityMatchesActivity(mToken, info.taskAffinity); 4936 } catch (RemoteException e) { 4937 return false; 4938 } catch (NameNotFoundException e) { 4939 return false; 4940 } 4941 } 4942 4943 /** 4944 * Navigate from this activity to the activity specified by upIntent, finishing this activity 4945 * in the process. If the activity indicated by upIntent already exists in the task's history, 4946 * this activity and all others before the indicated activity in the history stack will be 4947 * finished. 4948 * 4949 * <p>If the indicated activity does not appear in the history stack, this will finish 4950 * each activity in this task until the root activity of the task is reached, resulting in 4951 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 4952 * when an activity may be reached by a path not passing through a canonical parent 4953 * activity.</p> 4954 * 4955 * <p>This method should be used when performing up navigation from within the same task 4956 * as the destination. If up navigation should cross tasks in some cases, see 4957 * {@link #shouldUpRecreateTask(Intent)}.</p> 4958 * 4959 * @param upIntent An intent representing the target destination for up navigation 4960 * 4961 * @return true if up navigation successfully reached the activity indicated by upIntent and 4962 * upIntent was delivered to it. false if an instance of the indicated activity could 4963 * not be found and this activity was simply finished normally. 4964 */ 4965 public boolean navigateUpTo(Intent upIntent) { 4966 if (mParent == null) { 4967 ComponentName destInfo = upIntent.getComponent(); 4968 if (destInfo == null) { 4969 destInfo = upIntent.resolveActivity(getPackageManager()); 4970 if (destInfo == null) { 4971 return false; 4972 } 4973 upIntent = new Intent(upIntent); 4974 upIntent.setComponent(destInfo); 4975 } 4976 int resultCode; 4977 Intent resultData; 4978 synchronized (this) { 4979 resultCode = mResultCode; 4980 resultData = mResultData; 4981 } 4982 if (resultData != null) { 4983 resultData.setAllowFds(false); 4984 } 4985 try { 4986 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 4987 resultCode, resultData); 4988 } catch (RemoteException e) { 4989 return false; 4990 } 4991 } else { 4992 return mParent.navigateUpToFromChild(this, upIntent); 4993 } 4994 } 4995 4996 /** 4997 * This is called when a child activity of this one calls its 4998 * {@link #navigateUpTo} method. The default implementation simply calls 4999 * navigateUpTo(upIntent) on this activity (the parent). 5000 * 5001 * @param child The activity making the call. 5002 * @param upIntent An intent representing the target destination for up navigation 5003 * 5004 * @return true if up navigation successfully reached the activity indicated by upIntent and 5005 * upIntent was delivered to it. false if an instance of the indicated activity could 5006 * not be found and this activity was simply finished normally. 5007 */ 5008 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 5009 return navigateUpTo(upIntent); 5010 } 5011 5012 /** 5013 * Obtain an {@link Intent} that will launch an explicit target activity specified by 5014 * this activity's logical parent. The logical parent is named in the application's manifest 5015 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 5016 * Activity subclasses may override this method to modify the Intent returned by 5017 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 5018 * the parent intent entirely. 5019 * 5020 * @return a new Intent targeting the defined parent of this activity or null if 5021 * there is no valid parent. 5022 */ 5023 public Intent getParentActivityIntent() { 5024 final String parentName = mActivityInfo.parentActivityName; 5025 if (TextUtils.isEmpty(parentName)) { 5026 return null; 5027 } 5028 5029 // If the parent itself has no parent, generate a main activity intent. 5030 final ComponentName target = new ComponentName(this, parentName); 5031 try { 5032 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 5033 final String parentActivity = parentInfo.parentActivityName; 5034 final Intent parentIntent = parentActivity == null 5035 ? Intent.makeMainActivity(target) 5036 : new Intent().setComponent(target); 5037 return parentIntent; 5038 } catch (NameNotFoundException e) { 5039 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 5040 "' in manifest"); 5041 return null; 5042 } 5043 } 5044 5045 // ------------------ Internal API ------------------ 5046 5047 final void setParent(Activity parent) { 5048 mParent = parent; 5049 } 5050 5051 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 5052 Application application, Intent intent, ActivityInfo info, CharSequence title, 5053 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 5054 Configuration config) { 5055 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 5056 lastNonConfigurationInstances, config); 5057 } 5058 5059 final void attach(Context context, ActivityThread aThread, 5060 Instrumentation instr, IBinder token, int ident, 5061 Application application, Intent intent, ActivityInfo info, 5062 CharSequence title, Activity parent, String id, 5063 NonConfigurationInstances lastNonConfigurationInstances, 5064 Configuration config) { 5065 attachBaseContext(context); 5066 5067 mFragments.attachActivity(this, mContainer, null); 5068 5069 mWindow = PolicyManager.makeNewWindow(this); 5070 mWindow.setCallback(this); 5071 mWindow.getLayoutInflater().setPrivateFactory(this); 5072 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 5073 mWindow.setSoftInputMode(info.softInputMode); 5074 } 5075 if (info.uiOptions != 0) { 5076 mWindow.setUiOptions(info.uiOptions); 5077 } 5078 mUiThread = Thread.currentThread(); 5079 5080 mMainThread = aThread; 5081 mInstrumentation = instr; 5082 mToken = token; 5083 mIdent = ident; 5084 mApplication = application; 5085 mIntent = intent; 5086 mComponent = intent.getComponent(); 5087 mActivityInfo = info; 5088 mTitle = title; 5089 mParent = parent; 5090 mEmbeddedID = id; 5091 mLastNonConfigurationInstances = lastNonConfigurationInstances; 5092 5093 mWindow.setWindowManager( 5094 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 5095 mToken, mComponent.flattenToString(), 5096 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 5097 if (mParent != null) { 5098 mWindow.setContainer(mParent.getWindow()); 5099 } 5100 mWindowManager = mWindow.getWindowManager(); 5101 mCurrentConfig = config; 5102 } 5103 5104 /** @hide */ 5105 public final IBinder getActivityToken() { 5106 return mParent != null ? mParent.getActivityToken() : mToken; 5107 } 5108 5109 final void performCreate(Bundle icicle) { 5110 onCreate(icicle); 5111 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 5112 com.android.internal.R.styleable.Window_windowNoDisplay, false); 5113 mFragments.dispatchActivityCreated(); 5114 } 5115 5116 final void performStart() { 5117 mFragments.noteStateNotSaved(); 5118 mCalled = false; 5119 mFragments.execPendingActions(); 5120 mInstrumentation.callActivityOnStart(this); 5121 if (!mCalled) { 5122 throw new SuperNotCalledException( 5123 "Activity " + mComponent.toShortString() + 5124 " did not call through to super.onStart()"); 5125 } 5126 mFragments.dispatchStart(); 5127 if (mAllLoaderManagers != null) { 5128 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()]; 5129 mAllLoaderManagers.values().toArray(loaders); 5130 if (loaders != null) { 5131 for (int i=0; i<loaders.length; i++) { 5132 LoaderManagerImpl lm = loaders[i]; 5133 lm.finishRetain(); 5134 lm.doReportStart(); 5135 } 5136 } 5137 } 5138 } 5139 5140 final void performRestart() { 5141 mFragments.noteStateNotSaved(); 5142 5143 if (mStopped) { 5144 mStopped = false; 5145 if (mToken != null && mParent == null) { 5146 WindowManagerGlobal.getInstance().setStoppedState(mToken, false); 5147 } 5148 5149 synchronized (mManagedCursors) { 5150 final int N = mManagedCursors.size(); 5151 for (int i=0; i<N; i++) { 5152 ManagedCursor mc = mManagedCursors.get(i); 5153 if (mc.mReleased || mc.mUpdated) { 5154 if (!mc.mCursor.requery()) { 5155 if (getApplicationInfo().targetSdkVersion 5156 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5157 throw new IllegalStateException( 5158 "trying to requery an already closed cursor " 5159 + mc.mCursor); 5160 } 5161 } 5162 mc.mReleased = false; 5163 mc.mUpdated = false; 5164 } 5165 } 5166 } 5167 5168 mCalled = false; 5169 mInstrumentation.callActivityOnRestart(this); 5170 if (!mCalled) { 5171 throw new SuperNotCalledException( 5172 "Activity " + mComponent.toShortString() + 5173 " did not call through to super.onRestart()"); 5174 } 5175 performStart(); 5176 } 5177 } 5178 5179 final void performResume() { 5180 performRestart(); 5181 5182 mFragments.execPendingActions(); 5183 5184 mLastNonConfigurationInstances = null; 5185 5186 mCalled = false; 5187 // mResumed is set by the instrumentation 5188 mInstrumentation.callActivityOnResume(this); 5189 if (!mCalled) { 5190 throw new SuperNotCalledException( 5191 "Activity " + mComponent.toShortString() + 5192 " did not call through to super.onResume()"); 5193 } 5194 5195 // Now really resume, and install the current status bar and menu. 5196 mCalled = false; 5197 5198 mFragments.dispatchResume(); 5199 mFragments.execPendingActions(); 5200 5201 onPostResume(); 5202 if (!mCalled) { 5203 throw new SuperNotCalledException( 5204 "Activity " + mComponent.toShortString() + 5205 " did not call through to super.onPostResume()"); 5206 } 5207 } 5208 5209 final void performPause() { 5210 mFragments.dispatchPause(); 5211 mCalled = false; 5212 onPause(); 5213 mResumed = false; 5214 if (!mCalled && getApplicationInfo().targetSdkVersion 5215 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 5216 throw new SuperNotCalledException( 5217 "Activity " + mComponent.toShortString() + 5218 " did not call through to super.onPause()"); 5219 } 5220 mResumed = false; 5221 } 5222 5223 final void performUserLeaving() { 5224 onUserInteraction(); 5225 onUserLeaveHint(); 5226 } 5227 5228 final void performStop() { 5229 if (mLoadersStarted) { 5230 mLoadersStarted = false; 5231 if (mLoaderManager != null) { 5232 if (!mChangingConfigurations) { 5233 mLoaderManager.doStop(); 5234 } else { 5235 mLoaderManager.doRetain(); 5236 } 5237 } 5238 } 5239 5240 if (!mStopped) { 5241 if (mWindow != null) { 5242 mWindow.closeAllPanels(); 5243 } 5244 5245 if (mToken != null && mParent == null) { 5246 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 5247 } 5248 5249 mFragments.dispatchStop(); 5250 5251 mCalled = false; 5252 mInstrumentation.callActivityOnStop(this); 5253 if (!mCalled) { 5254 throw new SuperNotCalledException( 5255 "Activity " + mComponent.toShortString() + 5256 " did not call through to super.onStop()"); 5257 } 5258 5259 synchronized (mManagedCursors) { 5260 final int N = mManagedCursors.size(); 5261 for (int i=0; i<N; i++) { 5262 ManagedCursor mc = mManagedCursors.get(i); 5263 if (!mc.mReleased) { 5264 mc.mCursor.deactivate(); 5265 mc.mReleased = true; 5266 } 5267 } 5268 } 5269 5270 mStopped = true; 5271 } 5272 mResumed = false; 5273 } 5274 5275 final void performDestroy() { 5276 mDestroyed = true; 5277 mWindow.destroy(); 5278 mFragments.dispatchDestroy(); 5279 onDestroy(); 5280 if (mLoaderManager != null) { 5281 mLoaderManager.doDestroy(); 5282 } 5283 } 5284 5285 /** 5286 * @hide 5287 */ 5288 public final boolean isResumed() { 5289 return mResumed; 5290 } 5291 5292 void dispatchActivityResult(String who, int requestCode, 5293 int resultCode, Intent data) { 5294 if (false) Log.v( 5295 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 5296 + ", resCode=" + resultCode + ", data=" + data); 5297 mFragments.noteStateNotSaved(); 5298 if (who == null) { 5299 onActivityResult(requestCode, resultCode, data); 5300 } else { 5301 Fragment frag = mFragments.findFragmentByWho(who); 5302 if (frag != null) { 5303 frag.onActivityResult(requestCode, resultCode, data); 5304 } 5305 } 5306 } 5307} 5308