Activity.java revision ce418e661ab52a08a2a2c3b2f10a4dd9adf33305
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.ComponentCallbacks; 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.res.Configuration; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.database.Cursor; 36import android.graphics.Bitmap; 37import android.graphics.Canvas; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.net.Uri; 41import android.os.Build; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.IBinder; 45import android.os.Looper; 46import android.os.Parcelable; 47import android.os.RemoteException; 48import android.os.StrictMode; 49import android.text.Selection; 50import android.text.SpannableStringBuilder; 51import android.text.TextUtils; 52import android.text.method.TextKeyListener; 53import android.util.AttributeSet; 54import android.util.Config; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.SparseArray; 58import android.view.ActionMode; 59import android.view.ContextMenu; 60import android.view.ContextMenu.ContextMenuInfo; 61import android.view.ContextThemeWrapper; 62import android.view.KeyEvent; 63import android.view.LayoutInflater; 64import android.view.Menu; 65import android.view.MenuInflater; 66import android.view.MenuItem; 67import android.view.MotionEvent; 68import android.view.View; 69import android.view.WindowManagerImpl; 70import android.view.View.OnCreateContextMenuListener; 71import android.view.ViewGroup; 72import android.view.ViewGroup.LayoutParams; 73import android.view.ViewManager; 74import android.view.Window; 75import android.view.WindowManager; 76import android.view.accessibility.AccessibilityEvent; 77import android.widget.AdapterView; 78 79import java.io.FileDescriptor; 80import java.io.PrintWriter; 81import java.util.ArrayList; 82import java.util.HashMap; 83 84/** 85 * An activity is a single, focused thing that the user can do. Almost all 86 * activities interact with the user, so the Activity class takes care of 87 * creating a window for you in which you can place your UI with 88 * {@link #setContentView}. While activities are often presented to the user 89 * as full-screen windows, they can also be used in other ways: as floating 90 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 91 * or embedded inside of another activity (using {@link ActivityGroup}). 92 * 93 * There are two methods almost all subclasses of Activity will implement: 94 * 95 * <ul> 96 * <li> {@link #onCreate} is where you initialize your activity. Most 97 * importantly, here you will usually call {@link #setContentView(int)} 98 * with a layout resource defining your UI, and using {@link #findViewById} 99 * to retrieve the widgets in that UI that you need to interact with 100 * programmatically. 101 * 102 * <li> {@link #onPause} is where you deal with the user leaving your 103 * activity. Most importantly, any changes made by the user should at this 104 * point be committed (usually to the 105 * {@link android.content.ContentProvider} holding the data). 106 * </ul> 107 * 108 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 109 * activity classes must have a corresponding 110 * {@link android.R.styleable#AndroidManifestActivity <activity>} 111 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 112 * 113 * <p>The Activity class is an important part of an application's overall lifecycle, 114 * and the way activities are launched and put together is a fundamental 115 * part of the platform's application model. For a detailed perspective on the structure of an 116 * Android application and how activities behave, please read the 117 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 118 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 119 * documents.</p> 120 * 121 * <p>You can also find a detailed discussion about how to create activities in the 122 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 123 * document.</p> 124 * 125 * <p>Topics covered here: 126 * <ol> 127 * <li><a href="#Fragments">Fragments</a> 128 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 129 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 130 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 131 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 132 * <li><a href="#Permissions">Permissions</a> 133 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 134 * </ol> 135 * 136 * <a name="Fragments"></a> 137 * <h3>Fragments</h3> 138 * 139 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 140 * implementations can make use of the {@link Fragment} class to better 141 * modularize their code, build more sophisticated user interfaces for larger 142 * screens, and help scale their application between small and large screens. 143 * 144 * <a name="ActivityLifecycle"></a> 145 * <h3>Activity Lifecycle</h3> 146 * 147 * <p>Activities in the system are managed as an <em>activity stack</em>. 148 * When a new activity is started, it is placed on the top of the stack 149 * and becomes the running activity -- the previous activity always remains 150 * below it in the stack, and will not come to the foreground again until 151 * the new activity exits.</p> 152 * 153 * <p>An activity has essentially four states:</p> 154 * <ul> 155 * <li> If an activity in the foreground of the screen (at the top of 156 * the stack), 157 * it is <em>active</em> or <em>running</em>. </li> 158 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 159 * or transparent activity has focus on top of your activity), it 160 * is <em>paused</em>. A paused activity is completely alive (it 161 * maintains all state and member information and remains attached to 162 * the window manager), but can be killed by the system in extreme 163 * low memory situations. 164 * <li>If an activity is completely obscured by another activity, 165 * it is <em>stopped</em>. It still retains all state and member information, 166 * however, it is no longer visible to the user so its window is hidden 167 * and it will often be killed by the system when memory is needed 168 * elsewhere.</li> 169 * <li>If an activity is paused or stopped, the system can drop the activity 170 * from memory by either asking it to finish, or simply killing its 171 * process. When it is displayed again to the user, it must be 172 * completely restarted and restored to its previous state.</li> 173 * </ul> 174 * 175 * <p>The following diagram shows the important state paths of an Activity. 176 * The square rectangles represent callback methods you can implement to 177 * perform operations when the Activity moves between states. The colored 178 * ovals are major states the Activity can be in.</p> 179 * 180 * <p><img src="../../../images/activity_lifecycle.png" 181 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 182 * 183 * <p>There are three key loops you may be interested in monitoring within your 184 * activity: 185 * 186 * <ul> 187 * <li>The <b>entire lifetime</b> of an activity happens between the first call 188 * to {@link android.app.Activity#onCreate} through to a single final call 189 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 190 * of "global" state in onCreate(), and release all remaining resources in 191 * onDestroy(). For example, if it has a thread running in the background 192 * to download data from the network, it may create that thread in onCreate() 193 * and then stop the thread in onDestroy(). 194 * 195 * <li>The <b>visible lifetime</b> of an activity happens between a call to 196 * {@link android.app.Activity#onStart} until a corresponding call to 197 * {@link android.app.Activity#onStop}. During this time the user can see the 198 * activity on-screen, though it may not be in the foreground and interacting 199 * with the user. Between these two methods you can maintain resources that 200 * are needed to show the activity to the user. For example, you can register 201 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 202 * that impact your UI, and unregister it in onStop() when the user an no 203 * longer see what you are displaying. The onStart() and onStop() methods 204 * can be called multiple times, as the activity becomes visible and hidden 205 * to the user. 206 * 207 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 208 * {@link android.app.Activity#onResume} until a corresponding call to 209 * {@link android.app.Activity#onPause}. During this time the activity is 210 * in front of all other activities and interacting with the user. An activity 211 * can frequently go between the resumed and paused states -- for example when 212 * the device goes to sleep, when an activity result is delivered, when a new 213 * intent is delivered -- so the code in these methods should be fairly 214 * lightweight. 215 * </ul> 216 * 217 * <p>The entire lifecycle of an activity is defined by the following 218 * Activity methods. All of these are hooks that you can override 219 * to do appropriate work when the activity changes state. All 220 * activities will implement {@link android.app.Activity#onCreate} 221 * to do their initial setup; many will also implement 222 * {@link android.app.Activity#onPause} to commit changes to data and 223 * otherwise prepare to stop interacting with the user. You should always 224 * call up to your superclass when implementing these methods.</p> 225 * 226 * </p> 227 * <pre class="prettyprint"> 228 * public class Activity extends ApplicationContext { 229 * protected void onCreate(Bundle savedInstanceState); 230 * 231 * protected void onStart(); 232 * 233 * protected void onRestart(); 234 * 235 * protected void onResume(); 236 * 237 * protected void onPause(); 238 * 239 * protected void onStop(); 240 * 241 * protected void onDestroy(); 242 * } 243 * </pre> 244 * 245 * <p>In general the movement through an activity's lifecycle looks like 246 * this:</p> 247 * 248 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 249 * <colgroup align="left" span="3" /> 250 * <colgroup align="left" /> 251 * <colgroup align="center" /> 252 * <colgroup align="center" /> 253 * 254 * <thead> 255 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 256 * </thead> 257 * 258 * <tbody> 259 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 260 * <td>Called when the activity is first created. 261 * This is where you should do all of your normal static set up: 262 * create views, bind data to lists, etc. This method also 263 * provides you with a Bundle containing the activity's previously 264 * frozen state, if there was one. 265 * <p>Always followed by <code>onStart()</code>.</td> 266 * <td align="center">No</td> 267 * <td align="center"><code>onStart()</code></td> 268 * </tr> 269 * 270 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 271 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 272 * <td>Called after your activity has been stopped, prior to it being 273 * started again. 274 * <p>Always followed by <code>onStart()</code></td> 275 * <td align="center">No</td> 276 * <td align="center"><code>onStart()</code></td> 277 * </tr> 278 * 279 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 280 * <td>Called when the activity is becoming visible to the user. 281 * <p>Followed by <code>onResume()</code> if the activity comes 282 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 283 * <td align="center">No</td> 284 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 285 * </tr> 286 * 287 * <tr><td rowspan="2" style="border-left: none;"> </td> 288 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 289 * <td>Called when the activity will start 290 * interacting with the user. At this point your activity is at 291 * the top of the activity stack, with user input going to it. 292 * <p>Always followed by <code>onPause()</code>.</td> 293 * <td align="center">No</td> 294 * <td align="center"><code>onPause()</code></td> 295 * </tr> 296 * 297 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 298 * <td>Called when the system is about to start resuming a previous 299 * activity. This is typically used to commit unsaved changes to 300 * persistent data, stop animations and other things that may be consuming 301 * CPU, etc. Implementations of this method must be very quick because 302 * the next activity will not be resumed until this method returns. 303 * <p>Followed by either <code>onResume()</code> if the activity 304 * returns back to the front, or <code>onStop()</code> if it becomes 305 * invisible to the user.</td> 306 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 307 * <td align="center"><code>onResume()</code> or<br> 308 * <code>onStop()</code></td> 309 * </tr> 310 * 311 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 312 * <td>Called when the activity is no longer visible to the user, because 313 * another activity has been resumed and is covering this one. This 314 * may happen either because a new activity is being started, an existing 315 * one is being brought in front of this one, or this one is being 316 * destroyed. 317 * <p>Followed by either <code>onRestart()</code> if 318 * this activity is coming back to interact with the user, or 319 * <code>onDestroy()</code> if this activity is going away.</td> 320 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 321 * <td align="center"><code>onRestart()</code> or<br> 322 * <code>onDestroy()</code></td> 323 * </tr> 324 * 325 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 326 * <td>The final call you receive before your 327 * activity is destroyed. This can happen either because the 328 * activity is finishing (someone called {@link Activity#finish} on 329 * it, or because the system is temporarily destroying this 330 * instance of the activity to save space. You can distinguish 331 * between these two scenarios with the {@link 332 * Activity#isFinishing} method.</td> 333 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 334 * <td align="center"><em>nothing</em></td> 335 * </tr> 336 * </tbody> 337 * </table> 338 * 339 * <p>Note the "Killable" column in the above table -- for those methods that 340 * are marked as being killable, after that method returns the process hosting the 341 * activity may killed by the system <em>at any time</em> without another line 342 * of its code being executed. Because of this, you should use the 343 * {@link #onPause} method to write any persistent data (such as user edits) 344 * to storage. In addition, the method 345 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 346 * in such a background state, allowing you to save away any dynamic instance 347 * state in your activity into the given Bundle, to be later received in 348 * {@link #onCreate} if the activity needs to be re-created. 349 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 350 * section for more information on how the lifecycle of a process is tied 351 * to the activities it is hosting. Note that it is important to save 352 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 353 * because the latter is not part of the lifecycle callbacks, so will not 354 * be called in every situation as described in its documentation.</p> 355 * 356 * <p class="note">Be aware that these semantics will change slightly between 357 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 358 * vs. those targeting prior platforms. Starting with Honeycomb, an application 359 * is not in the killable state until its {@link #onStop} has returned. This 360 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 361 * safely called after {@link #onPause()} and allows and application to safely 362 * wait until {@link #onStop()} to save persistent state.</p> 363 * 364 * <p>For those methods that are not marked as being killable, the activity's 365 * process will not be killed by the system starting from the time the method 366 * is called and continuing after it returns. Thus an activity is in the killable 367 * state, for example, between after <code>onPause()</code> to the start of 368 * <code>onResume()</code>.</p> 369 * 370 * <a name="ConfigurationChanges"></a> 371 * <h3>Configuration Changes</h3> 372 * 373 * <p>If the configuration of the device (as defined by the 374 * {@link Configuration Resources.Configuration} class) changes, 375 * then anything displaying a user interface will need to update to match that 376 * configuration. Because Activity is the primary mechanism for interacting 377 * with the user, it includes special support for handling configuration 378 * changes.</p> 379 * 380 * <p>Unless you specify otherwise, a configuration change (such as a change 381 * in screen orientation, language, input devices, etc) will cause your 382 * current activity to be <em>destroyed</em>, going through the normal activity 383 * lifecycle process of {@link #onPause}, 384 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 385 * had been in the foreground or visible to the user, once {@link #onDestroy} is 386 * called in that instance then a new instance of the activity will be 387 * created, with whatever savedInstanceState the previous instance had generated 388 * from {@link #onSaveInstanceState}.</p> 389 * 390 * <p>This is done because any application resource, 391 * including layout files, can change based on any configuration value. Thus 392 * the only safe way to handle a configuration change is to re-retrieve all 393 * resources, including layouts, drawables, and strings. Because activities 394 * must already know how to save their state and re-create themselves from 395 * that state, this is a convenient way to have an activity restart itself 396 * with a new configuration.</p> 397 * 398 * <p>In some special cases, you may want to bypass restarting of your 399 * activity based on one or more types of configuration changes. This is 400 * done with the {@link android.R.attr#configChanges android:configChanges} 401 * attribute in its manifest. For any types of configuration changes you say 402 * that you handle there, you will receive a call to your current activity's 403 * {@link #onConfigurationChanged} method instead of being restarted. If 404 * a configuration change involves any that you do not handle, however, the 405 * activity will still be restarted and {@link #onConfigurationChanged} 406 * will not be called.</p> 407 * 408 * <a name="StartingActivities"></a> 409 * <h3>Starting Activities and Getting Results</h3> 410 * 411 * <p>The {@link android.app.Activity#startActivity} 412 * method is used to start a 413 * new activity, which will be placed at the top of the activity stack. It 414 * takes a single argument, an {@link android.content.Intent Intent}, 415 * which describes the activity 416 * to be executed.</p> 417 * 418 * <p>Sometimes you want to get a result back from an activity when it 419 * ends. For example, you may start an activity that lets the user pick 420 * a person in a list of contacts; when it ends, it returns the person 421 * that was selected. To do this, you call the 422 * {@link android.app.Activity#startActivityForResult(Intent, int)} 423 * version with a second integer parameter identifying the call. The result 424 * will come back through your {@link android.app.Activity#onActivityResult} 425 * method.</p> 426 * 427 * <p>When an activity exits, it can call 428 * {@link android.app.Activity#setResult(int)} 429 * to return data back to its parent. It must always supply a result code, 430 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 431 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 432 * return back an Intent containing any additional data it wants. All of this 433 * information appears back on the 434 * parent's <code>Activity.onActivityResult()</code>, along with the integer 435 * identifier it originally supplied.</p> 436 * 437 * <p>If a child activity fails for any reason (such as crashing), the parent 438 * activity will receive a result with the code RESULT_CANCELED.</p> 439 * 440 * <pre class="prettyprint"> 441 * public class MyActivity extends Activity { 442 * ... 443 * 444 * static final int PICK_CONTACT_REQUEST = 0; 445 * 446 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 447 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 448 * // When the user center presses, let them pick a contact. 449 * startActivityForResult( 450 * new Intent(Intent.ACTION_PICK, 451 * new Uri("content://contacts")), 452 * PICK_CONTACT_REQUEST); 453 * return true; 454 * } 455 * return false; 456 * } 457 * 458 * protected void onActivityResult(int requestCode, int resultCode, 459 * Intent data) { 460 * if (requestCode == PICK_CONTACT_REQUEST) { 461 * if (resultCode == RESULT_OK) { 462 * // A contact was picked. Here we will just display it 463 * // to the user. 464 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 465 * } 466 * } 467 * } 468 * } 469 * </pre> 470 * 471 * <a name="SavingPersistentState"></a> 472 * <h3>Saving Persistent State</h3> 473 * 474 * <p>There are generally two kinds of persistent state than an activity 475 * will deal with: shared document-like data (typically stored in a SQLite 476 * database using a {@linkplain android.content.ContentProvider content provider}) 477 * and internal state such as user preferences.</p> 478 * 479 * <p>For content provider data, we suggest that activities use a 480 * "edit in place" user model. That is, any edits a user makes are effectively 481 * made immediately without requiring an additional confirmation step. 482 * Supporting this model is generally a simple matter of following two rules:</p> 483 * 484 * <ul> 485 * <li> <p>When creating a new document, the backing database entry or file for 486 * it is created immediately. For example, if the user chooses to write 487 * a new e-mail, a new entry for that e-mail is created as soon as they 488 * start entering data, so that if they go to any other activity after 489 * that point this e-mail will now appear in the list of drafts.</p> 490 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 491 * commit to the backing content provider or file any changes the user 492 * has made. This ensures that those changes will be seen by any other 493 * activity that is about to run. You will probably want to commit 494 * your data even more aggressively at key times during your 495 * activity's lifecycle: for example before starting a new 496 * activity, before finishing your own activity, when the user 497 * switches between input fields, etc.</p> 498 * </ul> 499 * 500 * <p>This model is designed to prevent data loss when a user is navigating 501 * between activities, and allows the system to safely kill an activity (because 502 * system resources are needed somewhere else) at any time after it has been 503 * paused. Note this implies 504 * that the user pressing BACK from your activity does <em>not</em> 505 * mean "cancel" -- it means to leave the activity with its current contents 506 * saved away. Canceling edits in an activity must be provided through 507 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 508 * 509 * <p>See the {@linkplain android.content.ContentProvider content package} for 510 * more information about content providers. These are a key aspect of how 511 * different activities invoke and propagate data between themselves.</p> 512 * 513 * <p>The Activity class also provides an API for managing internal persistent state 514 * associated with an activity. This can be used, for example, to remember 515 * the user's preferred initial display in a calendar (day view or week view) 516 * or the user's default home page in a web browser.</p> 517 * 518 * <p>Activity persistent state is managed 519 * with the method {@link #getPreferences}, 520 * allowing you to retrieve and 521 * modify a set of name/value pairs associated with the activity. To use 522 * preferences that are shared across multiple application components 523 * (activities, receivers, services, providers), you can use the underlying 524 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 525 * to retrieve a preferences 526 * object stored under a specific name. 527 * (Note that it is not possible to share settings data across application 528 * packages -- for that you will need a content provider.)</p> 529 * 530 * <p>Here is an excerpt from a calendar activity that stores the user's 531 * preferred view mode in its persistent settings:</p> 532 * 533 * <pre class="prettyprint"> 534 * public class CalendarActivity extends Activity { 535 * ... 536 * 537 * static final int DAY_VIEW_MODE = 0; 538 * static final int WEEK_VIEW_MODE = 1; 539 * 540 * private SharedPreferences mPrefs; 541 * private int mCurViewMode; 542 * 543 * protected void onCreate(Bundle savedInstanceState) { 544 * super.onCreate(savedInstanceState); 545 * 546 * SharedPreferences mPrefs = getSharedPreferences(); 547 * mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE); 548 * } 549 * 550 * protected void onPause() { 551 * super.onPause(); 552 * 553 * SharedPreferences.Editor ed = mPrefs.edit(); 554 * ed.putInt("view_mode", mCurViewMode); 555 * ed.commit(); 556 * } 557 * } 558 * </pre> 559 * 560 * <a name="Permissions"></a> 561 * <h3>Permissions</h3> 562 * 563 * <p>The ability to start a particular Activity can be enforced when it is 564 * declared in its 565 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 566 * tag. By doing so, other applications will need to declare a corresponding 567 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 568 * element in their own manifest to be able to start that activity. 569 * 570 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 571 * document for more information on permissions and security in general. 572 * 573 * <a name="ProcessLifecycle"></a> 574 * <h3>Process Lifecycle</h3> 575 * 576 * <p>The Android system attempts to keep application process around for as 577 * long as possible, but eventually will need to remove old processes when 578 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 579 * Lifecycle</a>, the decision about which process to remove is intimately 580 * tied to the state of the user's interaction with it. In general, there 581 * are four states a process can be in based on the activities running in it, 582 * listed here in order of importance. The system will kill less important 583 * processes (the last ones) before it resorts to killing more important 584 * processes (the first ones). 585 * 586 * <ol> 587 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 588 * that the user is currently interacting with) is considered the most important. 589 * Its process will only be killed as a last resort, if it uses more memory 590 * than is available on the device. Generally at this point the device has 591 * reached a memory paging state, so this is required in order to keep the user 592 * interface responsive. 593 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 594 * but not in the foreground, such as one sitting behind a foreground dialog) 595 * is considered extremely important and will not be killed unless that is 596 * required to keep the foreground activity running. 597 * <li> <p>A <b>background activity</b> (an activity that is not visible to 598 * the user and has been paused) is no longer critical, so the system may 599 * safely kill its process to reclaim memory for other foreground or 600 * visible processes. If its process needs to be killed, when the user navigates 601 * back to the activity (making it visible on the screen again), its 602 * {@link #onCreate} method will be called with the savedInstanceState it had previously 603 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 604 * state as the user last left it. 605 * <li> <p>An <b>empty process</b> is one hosting no activities or other 606 * application components (such as {@link Service} or 607 * {@link android.content.BroadcastReceiver} classes). These are killed very 608 * quickly by the system as memory becomes low. For this reason, any 609 * background operation you do outside of an activity must be executed in the 610 * context of an activity BroadcastReceiver or Service to ensure that the system 611 * knows it needs to keep your process around. 612 * </ol> 613 * 614 * <p>Sometimes an Activity may need to do a long-running operation that exists 615 * independently of the activity lifecycle itself. An example may be a camera 616 * application that allows you to upload a picture to a web site. The upload 617 * may take a long time, and the application should allow the user to leave 618 * the application will it is executing. To accomplish this, your Activity 619 * should start a {@link Service} in which the upload takes place. This allows 620 * the system to properly prioritize your process (considering it to be more 621 * important than other non-visible applications) for the duration of the 622 * upload, independent of whether the original activity is paused, stopped, 623 * or finished. 624 */ 625public class Activity extends ContextThemeWrapper 626 implements LayoutInflater.Factory2, 627 Window.Callback, KeyEvent.Callback, 628 OnCreateContextMenuListener, ComponentCallbacks { 629 private static final String TAG = "Activity"; 630 631 /** Standard activity result: operation canceled. */ 632 public static final int RESULT_CANCELED = 0; 633 /** Standard activity result: operation succeeded. */ 634 public static final int RESULT_OK = -1; 635 /** Start of user-defined activity results. */ 636 public static final int RESULT_FIRST_USER = 1; 637 638 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 639 private static final String FRAGMENTS_TAG = "android:fragments"; 640 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 641 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 642 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 643 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 644 645 private static class ManagedDialog { 646 Dialog mDialog; 647 Bundle mArgs; 648 } 649 private SparseArray<ManagedDialog> mManagedDialogs; 650 651 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 652 private Instrumentation mInstrumentation; 653 private IBinder mToken; 654 private int mIdent; 655 /*package*/ String mEmbeddedID; 656 private Application mApplication; 657 /*package*/ Intent mIntent; 658 private ComponentName mComponent; 659 /*package*/ ActivityInfo mActivityInfo; 660 /*package*/ ActivityThread mMainThread; 661 Activity mParent; 662 boolean mCalled; 663 boolean mCheckedForLoaderManager; 664 boolean mLoadersStarted; 665 /*package*/ boolean mResumed; 666 private boolean mStopped; 667 boolean mFinished; 668 boolean mStartedActivity; 669 /** true if the activity is going through a transient pause */ 670 /*package*/ boolean mTemporaryPause = false; 671 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 672 /*package*/ boolean mChangingConfigurations = false; 673 /*package*/ int mConfigChangeFlags; 674 /*package*/ Configuration mCurrentConfig; 675 private SearchManager mSearchManager; 676 677 static final class NonConfigurationInstances { 678 Object activity; 679 HashMap<String, Object> children; 680 ArrayList<Fragment> fragments; 681 SparseArray<LoaderManagerImpl> loaders; 682 } 683 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 684 685 private Window mWindow; 686 687 private WindowManager mWindowManager; 688 /*package*/ View mDecor = null; 689 /*package*/ boolean mWindowAdded = false; 690 /*package*/ boolean mVisibleFromServer = false; 691 /*package*/ boolean mVisibleFromClient = true; 692 /*package*/ ActionBarImpl mActionBar = null; 693 694 private CharSequence mTitle; 695 private int mTitleColor = 0; 696 697 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 698 699 SparseArray<LoaderManagerImpl> mAllLoaderManagers; 700 LoaderManagerImpl mLoaderManager; 701 702 private static final class ManagedCursor { 703 ManagedCursor(Cursor cursor) { 704 mCursor = cursor; 705 mReleased = false; 706 mUpdated = false; 707 } 708 709 private final Cursor mCursor; 710 private boolean mReleased; 711 private boolean mUpdated; 712 } 713 private final ArrayList<ManagedCursor> mManagedCursors = 714 new ArrayList<ManagedCursor>(); 715 716 // protected by synchronized (this) 717 int mResultCode = RESULT_CANCELED; 718 Intent mResultData = null; 719 720 private boolean mTitleReady = false; 721 722 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 723 private SpannableStringBuilder mDefaultKeySsb = null; 724 725 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 726 727 private Thread mUiThread; 728 final Handler mHandler = new Handler(); 729 730 /** Return the intent that started this activity. */ 731 public Intent getIntent() { 732 return mIntent; 733 } 734 735 /** 736 * Change the intent returned by {@link #getIntent}. This holds a 737 * reference to the given intent; it does not copy it. Often used in 738 * conjunction with {@link #onNewIntent}. 739 * 740 * @param newIntent The new Intent object to return from getIntent 741 * 742 * @see #getIntent 743 * @see #onNewIntent 744 */ 745 public void setIntent(Intent newIntent) { 746 mIntent = newIntent; 747 } 748 749 /** Return the application that owns this activity. */ 750 public final Application getApplication() { 751 return mApplication; 752 } 753 754 /** Is this activity embedded inside of another activity? */ 755 public final boolean isChild() { 756 return mParent != null; 757 } 758 759 /** Return the parent activity if this view is an embedded child. */ 760 public final Activity getParent() { 761 return mParent; 762 } 763 764 /** Retrieve the window manager for showing custom windows. */ 765 public WindowManager getWindowManager() { 766 return mWindowManager; 767 } 768 769 /** 770 * Retrieve the current {@link android.view.Window} for the activity. 771 * This can be used to directly access parts of the Window API that 772 * are not available through Activity/Screen. 773 * 774 * @return Window The current window, or null if the activity is not 775 * visual. 776 */ 777 public Window getWindow() { 778 return mWindow; 779 } 780 781 /** 782 * Return the LoaderManager for this fragment, creating it if needed. 783 */ 784 public LoaderManager getLoaderManager() { 785 if (mLoaderManager != null) { 786 return mLoaderManager; 787 } 788 mCheckedForLoaderManager = true; 789 mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); 790 return mLoaderManager; 791 } 792 793 LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { 794 if (mAllLoaderManagers == null) { 795 mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); 796 } 797 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 798 if (lm == null) { 799 if (create) { 800 lm = new LoaderManagerImpl(this, started); 801 mAllLoaderManagers.put(index, lm); 802 } 803 } else { 804 lm.updateActivity(this); 805 } 806 return lm; 807 } 808 809 /** 810 * Calls {@link android.view.Window#getCurrentFocus} on the 811 * Window of this Activity to return the currently focused view. 812 * 813 * @return View The current View with focus or null. 814 * 815 * @see #getWindow 816 * @see android.view.Window#getCurrentFocus 817 */ 818 public View getCurrentFocus() { 819 return mWindow != null ? mWindow.getCurrentFocus() : null; 820 } 821 822 @Override 823 public int getWallpaperDesiredMinimumWidth() { 824 int width = super.getWallpaperDesiredMinimumWidth(); 825 return width <= 0 ? getWindowManager().getDefaultDisplay().getWidth() : width; 826 } 827 828 @Override 829 public int getWallpaperDesiredMinimumHeight() { 830 int height = super.getWallpaperDesiredMinimumHeight(); 831 return height <= 0 ? getWindowManager().getDefaultDisplay().getHeight() : height; 832 } 833 834 /** 835 * Called when the activity is starting. This is where most initialization 836 * should go: calling {@link #setContentView(int)} to inflate the 837 * activity's UI, using {@link #findViewById} to programmatically interact 838 * with widgets in the UI, calling 839 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 840 * cursors for data being displayed, etc. 841 * 842 * <p>You can call {@link #finish} from within this function, in 843 * which case onDestroy() will be immediately called without any of the rest 844 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 845 * {@link #onPause}, etc) executing. 846 * 847 * <p><em>Derived classes must call through to the super class's 848 * implementation of this method. If they do not, an exception will be 849 * thrown.</em></p> 850 * 851 * @param savedInstanceState If the activity is being re-initialized after 852 * previously being shut down then this Bundle contains the data it most 853 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 854 * 855 * @see #onStart 856 * @see #onSaveInstanceState 857 * @see #onRestoreInstanceState 858 * @see #onPostCreate 859 */ 860 protected void onCreate(Bundle savedInstanceState) { 861 if (mLastNonConfigurationInstances != null) { 862 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 863 } 864 if (savedInstanceState != null) { 865 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 866 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 867 ? mLastNonConfigurationInstances.fragments : null); 868 } 869 mFragments.dispatchCreate(); 870 mCalled = true; 871 } 872 873 /** 874 * The hook for {@link ActivityThread} to restore the state of this activity. 875 * 876 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 877 * {@link #restoreManagedDialogs(android.os.Bundle)}. 878 * 879 * @param savedInstanceState contains the saved state 880 */ 881 final void performRestoreInstanceState(Bundle savedInstanceState) { 882 onRestoreInstanceState(savedInstanceState); 883 restoreManagedDialogs(savedInstanceState); 884 } 885 886 /** 887 * This method is called after {@link #onStart} when the activity is 888 * being re-initialized from a previously saved state, given here in 889 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 890 * to restore their state, but it is sometimes convenient to do it here 891 * after all of the initialization has been done or to allow subclasses to 892 * decide whether to use your default implementation. The default 893 * implementation of this method performs a restore of any view state that 894 * had previously been frozen by {@link #onSaveInstanceState}. 895 * 896 * <p>This method is called between {@link #onStart} and 897 * {@link #onPostCreate}. 898 * 899 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 900 * 901 * @see #onCreate 902 * @see #onPostCreate 903 * @see #onResume 904 * @see #onSaveInstanceState 905 */ 906 protected void onRestoreInstanceState(Bundle savedInstanceState) { 907 if (mWindow != null) { 908 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 909 if (windowState != null) { 910 mWindow.restoreHierarchyState(windowState); 911 } 912 } 913 } 914 915 /** 916 * Restore the state of any saved managed dialogs. 917 * 918 * @param savedInstanceState The bundle to restore from. 919 */ 920 private void restoreManagedDialogs(Bundle savedInstanceState) { 921 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 922 if (b == null) { 923 return; 924 } 925 926 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 927 final int numDialogs = ids.length; 928 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 929 for (int i = 0; i < numDialogs; i++) { 930 final Integer dialogId = ids[i]; 931 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 932 if (dialogState != null) { 933 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 934 // so tell createDialog() not to do it, otherwise we get an exception 935 final ManagedDialog md = new ManagedDialog(); 936 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 937 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 938 if (md.mDialog != null) { 939 mManagedDialogs.put(dialogId, md); 940 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 941 md.mDialog.onRestoreInstanceState(dialogState); 942 } 943 } 944 } 945 } 946 947 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 948 final Dialog dialog = onCreateDialog(dialogId, args); 949 if (dialog == null) { 950 return null; 951 } 952 dialog.dispatchOnCreate(state); 953 return dialog; 954 } 955 956 private static String savedDialogKeyFor(int key) { 957 return SAVED_DIALOG_KEY_PREFIX + key; 958 } 959 960 private static String savedDialogArgsKeyFor(int key) { 961 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 962 } 963 964 /** 965 * Called when activity start-up is complete (after {@link #onStart} 966 * and {@link #onRestoreInstanceState} have been called). Applications will 967 * generally not implement this method; it is intended for system 968 * classes to do final initialization after application code has run. 969 * 970 * <p><em>Derived classes must call through to the super class's 971 * implementation of this method. If they do not, an exception will be 972 * thrown.</em></p> 973 * 974 * @param savedInstanceState If the activity is being re-initialized after 975 * previously being shut down then this Bundle contains the data it most 976 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 977 * @see #onCreate 978 */ 979 protected void onPostCreate(Bundle savedInstanceState) { 980 if (!isChild()) { 981 mTitleReady = true; 982 onTitleChanged(getTitle(), getTitleColor()); 983 } 984 mCalled = true; 985 } 986 987 /** 988 * Called after {@link #onCreate} — or after {@link #onRestart} when 989 * the activity had been stopped, but is now again being displayed to the 990 * user. It will be followed by {@link #onResume}. 991 * 992 * <p><em>Derived classes must call through to the super class's 993 * implementation of this method. If they do not, an exception will be 994 * thrown.</em></p> 995 * 996 * @see #onCreate 997 * @see #onStop 998 * @see #onResume 999 */ 1000 protected void onStart() { 1001 mCalled = true; 1002 1003 if (!mLoadersStarted) { 1004 mLoadersStarted = true; 1005 if (mLoaderManager != null) { 1006 mLoaderManager.doStart(); 1007 } else if (!mCheckedForLoaderManager) { 1008 mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); 1009 } 1010 mCheckedForLoaderManager = true; 1011 } 1012 } 1013 1014 /** 1015 * Called after {@link #onStop} when the current activity is being 1016 * re-displayed to the user (the user has navigated back to it). It will 1017 * be followed by {@link #onStart} and then {@link #onResume}. 1018 * 1019 * <p>For activities that are using raw {@link Cursor} objects (instead of 1020 * creating them through 1021 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1022 * this is usually the place 1023 * where the cursor should be requeried (because you had deactivated it in 1024 * {@link #onStop}. 1025 * 1026 * <p><em>Derived classes must call through to the super class's 1027 * implementation of this method. If they do not, an exception will be 1028 * thrown.</em></p> 1029 * 1030 * @see #onStop 1031 * @see #onStart 1032 * @see #onResume 1033 */ 1034 protected void onRestart() { 1035 mCalled = true; 1036 } 1037 1038 /** 1039 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1040 * {@link #onPause}, for your activity to start interacting with the user. 1041 * This is a good place to begin animations, open exclusive-access devices 1042 * (such as the camera), etc. 1043 * 1044 * <p>Keep in mind that onResume is not the best indicator that your activity 1045 * is visible to the user; a system window such as the keyguard may be in 1046 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1047 * activity is visible to the user (for example, to resume a game). 1048 * 1049 * <p><em>Derived classes must call through to the super class's 1050 * implementation of this method. If they do not, an exception will be 1051 * thrown.</em></p> 1052 * 1053 * @see #onRestoreInstanceState 1054 * @see #onRestart 1055 * @see #onPostResume 1056 * @see #onPause 1057 */ 1058 protected void onResume() { 1059 mCalled = true; 1060 } 1061 1062 /** 1063 * Called when activity resume is complete (after {@link #onResume} has 1064 * been called). Applications will generally not implement this method; 1065 * it is intended for system classes to do final setup after application 1066 * resume code has run. 1067 * 1068 * <p><em>Derived classes must call through to the super class's 1069 * implementation of this method. If they do not, an exception will be 1070 * thrown.</em></p> 1071 * 1072 * @see #onResume 1073 */ 1074 protected void onPostResume() { 1075 final Window win = getWindow(); 1076 if (win != null) win.makeActive(); 1077 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1078 mCalled = true; 1079 } 1080 1081 /** 1082 * This is called for activities that set launchMode to "singleTop" in 1083 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1084 * flag when calling {@link #startActivity}. In either case, when the 1085 * activity is re-launched while at the top of the activity stack instead 1086 * of a new instance of the activity being started, onNewIntent() will be 1087 * called on the existing instance with the Intent that was used to 1088 * re-launch it. 1089 * 1090 * <p>An activity will always be paused before receiving a new intent, so 1091 * you can count on {@link #onResume} being called after this method. 1092 * 1093 * <p>Note that {@link #getIntent} still returns the original Intent. You 1094 * can use {@link #setIntent} to update it to this new Intent. 1095 * 1096 * @param intent The new intent that was started for the activity. 1097 * 1098 * @see #getIntent 1099 * @see #setIntent 1100 * @see #onResume 1101 */ 1102 protected void onNewIntent(Intent intent) { 1103 } 1104 1105 /** 1106 * The hook for {@link ActivityThread} to save the state of this activity. 1107 * 1108 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1109 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1110 * 1111 * @param outState The bundle to save the state to. 1112 */ 1113 final void performSaveInstanceState(Bundle outState) { 1114 onSaveInstanceState(outState); 1115 saveManagedDialogs(outState); 1116 } 1117 1118 /** 1119 * Called to retrieve per-instance state from an activity before being killed 1120 * so that the state can be restored in {@link #onCreate} or 1121 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1122 * will be passed to both). 1123 * 1124 * <p>This method is called before an activity may be killed so that when it 1125 * comes back some time in the future it can restore its state. For example, 1126 * if activity B is launched in front of activity A, and at some point activity 1127 * A is killed to reclaim resources, activity A will have a chance to save the 1128 * current state of its user interface via this method so that when the user 1129 * returns to activity A, the state of the user interface can be restored 1130 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1131 * 1132 * <p>Do not confuse this method with activity lifecycle callbacks such as 1133 * {@link #onPause}, which is always called when an activity is being placed 1134 * in the background or on its way to destruction, or {@link #onStop} which 1135 * is called before destruction. One example of when {@link #onPause} and 1136 * {@link #onStop} is called and not this method is when a user navigates back 1137 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1138 * on B because that particular instance will never be restored, so the 1139 * system avoids calling it. An example when {@link #onPause} is called and 1140 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1141 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1142 * killed during the lifetime of B since the state of the user interface of 1143 * A will stay intact. 1144 * 1145 * <p>The default implementation takes care of most of the UI per-instance 1146 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1147 * view in the hierarchy that has an id, and by saving the id of the currently 1148 * focused view (all of which is restored by the default implementation of 1149 * {@link #onRestoreInstanceState}). If you override this method to save additional 1150 * information not captured by each individual view, you will likely want to 1151 * call through to the default implementation, otherwise be prepared to save 1152 * all of the state of each view yourself. 1153 * 1154 * <p>If called, this method will occur before {@link #onStop}. There are 1155 * no guarantees about whether it will occur before or after {@link #onPause}. 1156 * 1157 * @param outState Bundle in which to place your saved state. 1158 * 1159 * @see #onCreate 1160 * @see #onRestoreInstanceState 1161 * @see #onPause 1162 */ 1163 protected void onSaveInstanceState(Bundle outState) { 1164 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1165 Parcelable p = mFragments.saveAllState(); 1166 if (p != null) { 1167 outState.putParcelable(FRAGMENTS_TAG, p); 1168 } 1169 } 1170 1171 /** 1172 * Save the state of any managed dialogs. 1173 * 1174 * @param outState place to store the saved state. 1175 */ 1176 private void saveManagedDialogs(Bundle outState) { 1177 if (mManagedDialogs == null) { 1178 return; 1179 } 1180 1181 final int numDialogs = mManagedDialogs.size(); 1182 if (numDialogs == 0) { 1183 return; 1184 } 1185 1186 Bundle dialogState = new Bundle(); 1187 1188 int[] ids = new int[mManagedDialogs.size()]; 1189 1190 // save each dialog's bundle, gather the ids 1191 for (int i = 0; i < numDialogs; i++) { 1192 final int key = mManagedDialogs.keyAt(i); 1193 ids[i] = key; 1194 final ManagedDialog md = mManagedDialogs.valueAt(i); 1195 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1196 if (md.mArgs != null) { 1197 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1198 } 1199 } 1200 1201 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1202 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1203 } 1204 1205 1206 /** 1207 * Called as part of the activity lifecycle when an activity is going into 1208 * the background, but has not (yet) been killed. The counterpart to 1209 * {@link #onResume}. 1210 * 1211 * <p>When activity B is launched in front of activity A, this callback will 1212 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1213 * so be sure to not do anything lengthy here. 1214 * 1215 * <p>This callback is mostly used for saving any persistent state the 1216 * activity is editing, to present a "edit in place" model to the user and 1217 * making sure nothing is lost if there are not enough resources to start 1218 * the new activity without first killing this one. This is also a good 1219 * place to do things like stop animations and other things that consume a 1220 * noticeable mount of CPU in order to make the switch to the next activity 1221 * as fast as possible, or to close resources that are exclusive access 1222 * such as the camera. 1223 * 1224 * <p>In situations where the system needs more memory it may kill paused 1225 * processes to reclaim resources. Because of this, you should be sure 1226 * that all of your state is saved by the time you return from 1227 * this function. In general {@link #onSaveInstanceState} is used to save 1228 * per-instance state in the activity and this method is used to store 1229 * global persistent data (in content providers, files, etc.) 1230 * 1231 * <p>After receiving this call you will usually receive a following call 1232 * to {@link #onStop} (after the next activity has been resumed and 1233 * displayed), however in some cases there will be a direct call back to 1234 * {@link #onResume} without going through the stopped state. 1235 * 1236 * <p><em>Derived classes must call through to the super class's 1237 * implementation of this method. If they do not, an exception will be 1238 * thrown.</em></p> 1239 * 1240 * @see #onResume 1241 * @see #onSaveInstanceState 1242 * @see #onStop 1243 */ 1244 protected void onPause() { 1245 mCalled = true; 1246 } 1247 1248 /** 1249 * Called as part of the activity lifecycle when an activity is about to go 1250 * into the background as the result of user choice. For example, when the 1251 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1252 * when an incoming phone call causes the in-call Activity to be automatically 1253 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1254 * the activity being interrupted. In cases when it is invoked, this method 1255 * is called right before the activity's {@link #onPause} callback. 1256 * 1257 * <p>This callback and {@link #onUserInteraction} are intended to help 1258 * activities manage status bar notifications intelligently; specifically, 1259 * for helping activities determine the proper time to cancel a notfication. 1260 * 1261 * @see #onUserInteraction() 1262 */ 1263 protected void onUserLeaveHint() { 1264 } 1265 1266 /** 1267 * Generate a new thumbnail for this activity. This method is called before 1268 * pausing the activity, and should draw into <var>outBitmap</var> the 1269 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1270 * can use the given <var>canvas</var>, which is configured to draw into the 1271 * bitmap, for rendering if desired. 1272 * 1273 * <p>The default implementation returns fails and does not draw a thumbnail; 1274 * this will result in the platform creating its own thumbnail if needed. 1275 * 1276 * @param outBitmap The bitmap to contain the thumbnail. 1277 * @param canvas Can be used to render into the bitmap. 1278 * 1279 * @return Return true if you have drawn into the bitmap; otherwise after 1280 * you return it will be filled with a default thumbnail. 1281 * 1282 * @see #onCreateDescription 1283 * @see #onSaveInstanceState 1284 * @see #onPause 1285 */ 1286 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1287 return false; 1288 } 1289 1290 /** 1291 * Generate a new description for this activity. This method is called 1292 * before pausing the activity and can, if desired, return some textual 1293 * description of its current state to be displayed to the user. 1294 * 1295 * <p>The default implementation returns null, which will cause you to 1296 * inherit the description from the previous activity. If all activities 1297 * return null, generally the label of the top activity will be used as the 1298 * description. 1299 * 1300 * @return A description of what the user is doing. It should be short and 1301 * sweet (only a few words). 1302 * 1303 * @see #onCreateThumbnail 1304 * @see #onSaveInstanceState 1305 * @see #onPause 1306 */ 1307 public CharSequence onCreateDescription() { 1308 return null; 1309 } 1310 1311 /** 1312 * Called when you are no longer visible to the user. You will next 1313 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1314 * depending on later user activity. 1315 * 1316 * <p>Note that this method may never be called, in low memory situations 1317 * where the system does not have enough memory to keep your activity's 1318 * process running after its {@link #onPause} method is called. 1319 * 1320 * <p><em>Derived classes must call through to the super class's 1321 * implementation of this method. If they do not, an exception will be 1322 * thrown.</em></p> 1323 * 1324 * @see #onRestart 1325 * @see #onResume 1326 * @see #onSaveInstanceState 1327 * @see #onDestroy 1328 */ 1329 protected void onStop() { 1330 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1331 mCalled = true; 1332 } 1333 1334 /** 1335 * Perform any final cleanup before an activity is destroyed. This can 1336 * happen either because the activity is finishing (someone called 1337 * {@link #finish} on it, or because the system is temporarily destroying 1338 * this instance of the activity to save space. You can distinguish 1339 * between these two scenarios with the {@link #isFinishing} method. 1340 * 1341 * <p><em>Note: do not count on this method being called as a place for 1342 * saving data! For example, if an activity is editing data in a content 1343 * provider, those edits should be committed in either {@link #onPause} or 1344 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1345 * free resources like threads that are associated with an activity, so 1346 * that a destroyed activity does not leave such things around while the 1347 * rest of its application is still running. There are situations where 1348 * the system will simply kill the activity's hosting process without 1349 * calling this method (or any others) in it, so it should not be used to 1350 * do things that are intended to remain around after the process goes 1351 * away. 1352 * 1353 * <p><em>Derived classes must call through to the super class's 1354 * implementation of this method. If they do not, an exception will be 1355 * thrown.</em></p> 1356 * 1357 * @see #onPause 1358 * @see #onStop 1359 * @see #finish 1360 * @see #isFinishing 1361 */ 1362 protected void onDestroy() { 1363 mCalled = true; 1364 1365 // dismiss any dialogs we are managing. 1366 if (mManagedDialogs != null) { 1367 final int numDialogs = mManagedDialogs.size(); 1368 for (int i = 0; i < numDialogs; i++) { 1369 final ManagedDialog md = mManagedDialogs.valueAt(i); 1370 if (md.mDialog.isShowing()) { 1371 md.mDialog.dismiss(); 1372 } 1373 } 1374 mManagedDialogs = null; 1375 } 1376 1377 // close any cursors we are managing. 1378 synchronized (mManagedCursors) { 1379 int numCursors = mManagedCursors.size(); 1380 for (int i = 0; i < numCursors; i++) { 1381 ManagedCursor c = mManagedCursors.get(i); 1382 if (c != null) { 1383 c.mCursor.close(); 1384 } 1385 } 1386 mManagedCursors.clear(); 1387 } 1388 1389 // Close any open search dialog 1390 if (mSearchManager != null) { 1391 mSearchManager.stopSearch(); 1392 } 1393 } 1394 1395 /** 1396 * Called by the system when the device configuration changes while your 1397 * activity is running. Note that this will <em>only</em> be called if 1398 * you have selected configurations you would like to handle with the 1399 * {@link android.R.attr#configChanges} attribute in your manifest. If 1400 * any configuration change occurs that is not selected to be reported 1401 * by that attribute, then instead of reporting it the system will stop 1402 * and restart the activity (to have it launched with the new 1403 * configuration). 1404 * 1405 * <p>At the time that this function has been called, your Resources 1406 * object will have been updated to return resource values matching the 1407 * new configuration. 1408 * 1409 * @param newConfig The new device configuration. 1410 */ 1411 public void onConfigurationChanged(Configuration newConfig) { 1412 mCalled = true; 1413 1414 mFragments.dispatchConfigurationChanged(newConfig); 1415 1416 if (mWindow != null) { 1417 // Pass the configuration changed event to the window 1418 mWindow.onConfigurationChanged(newConfig); 1419 } 1420 } 1421 1422 /** 1423 * If this activity is being destroyed because it can not handle a 1424 * configuration parameter being changed (and thus its 1425 * {@link #onConfigurationChanged(Configuration)} method is 1426 * <em>not</em> being called), then you can use this method to discover 1427 * the set of changes that have occurred while in the process of being 1428 * destroyed. Note that there is no guarantee that these will be 1429 * accurate (other changes could have happened at any time), so you should 1430 * only use this as an optimization hint. 1431 * 1432 * @return Returns a bit field of the configuration parameters that are 1433 * changing, as defined by the {@link android.content.res.Configuration} 1434 * class. 1435 */ 1436 public int getChangingConfigurations() { 1437 return mConfigChangeFlags; 1438 } 1439 1440 /** 1441 * Retrieve the non-configuration instance data that was previously 1442 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1443 * be available from the initial {@link #onCreate} and 1444 * {@link #onStart} calls to the new instance, allowing you to extract 1445 * any useful dynamic state from the previous instance. 1446 * 1447 * <p>Note that the data you retrieve here should <em>only</em> be used 1448 * as an optimization for handling configuration changes. You should always 1449 * be able to handle getting a null pointer back, and an activity must 1450 * still be able to restore itself to its previous state (through the 1451 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1452 * function returns null. 1453 * 1454 * @return Returns the object previously returned by 1455 * {@link #onRetainNonConfigurationInstance()}. 1456 */ 1457 public Object getLastNonConfigurationInstance() { 1458 return mLastNonConfigurationInstances != null 1459 ? mLastNonConfigurationInstances.activity : null; 1460 } 1461 1462 /** 1463 * Called by the system, as part of destroying an 1464 * activity due to a configuration change, when it is known that a new 1465 * instance will immediately be created for the new configuration. You 1466 * can return any object you like here, including the activity instance 1467 * itself, which can later be retrieved by calling 1468 * {@link #getLastNonConfigurationInstance()} in the new activity 1469 * instance. 1470 * 1471 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1472 * or later, consider instead using a {@link Fragment} with 1473 * {@link Fragment#setRetainInstance(boolean) 1474 * Fragment.setRetainInstance(boolean}.</em> 1475 * 1476 * <p>This function is called purely as an optimization, and you must 1477 * not rely on it being called. When it is called, a number of guarantees 1478 * will be made to help optimize configuration switching: 1479 * <ul> 1480 * <li> The function will be called between {@link #onStop} and 1481 * {@link #onDestroy}. 1482 * <li> A new instance of the activity will <em>always</em> be immediately 1483 * created after this one's {@link #onDestroy()} is called. In particular, 1484 * <em>no</em> messages will be dispatched during this time (when the returned 1485 * object does not have an activity to be associated with). 1486 * <li> The object you return here will <em>always</em> be available from 1487 * the {@link #getLastNonConfigurationInstance()} method of the following 1488 * activity instance as described there. 1489 * </ul> 1490 * 1491 * <p>These guarantees are designed so that an activity can use this API 1492 * to propagate extensive state from the old to new activity instance, from 1493 * loaded bitmaps, to network connections, to evenly actively running 1494 * threads. Note that you should <em>not</em> propagate any data that 1495 * may change based on the configuration, including any data loaded from 1496 * resources such as strings, layouts, or drawables. 1497 * 1498 * <p>The guarantee of no message handling during the switch to the next 1499 * activity simplifies use with active objects. For example if your retained 1500 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1501 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1502 * not be called from the call here until you execute the next instance's 1503 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1504 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1505 * running in a separate thread.) 1506 * 1507 * @return Return any Object holding the desired state to propagate to the 1508 * next activity instance. 1509 */ 1510 public Object onRetainNonConfigurationInstance() { 1511 return null; 1512 } 1513 1514 /** 1515 * Retrieve the non-configuration instance data that was previously 1516 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1517 * be available from the initial {@link #onCreate} and 1518 * {@link #onStart} calls to the new instance, allowing you to extract 1519 * any useful dynamic state from the previous instance. 1520 * 1521 * <p>Note that the data you retrieve here should <em>only</em> be used 1522 * as an optimization for handling configuration changes. You should always 1523 * be able to handle getting a null pointer back, and an activity must 1524 * still be able to restore itself to its previous state (through the 1525 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1526 * function returns null. 1527 * 1528 * @return Returns the object previously returned by 1529 * {@link #onRetainNonConfigurationChildInstances()} 1530 */ 1531 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1532 return mLastNonConfigurationInstances != null 1533 ? mLastNonConfigurationInstances.children : null; 1534 } 1535 1536 /** 1537 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1538 * it should return either a mapping from child activity id strings to arbitrary objects, 1539 * or null. This method is intended to be used by Activity framework subclasses that control a 1540 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1541 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1542 */ 1543 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1544 return null; 1545 } 1546 1547 NonConfigurationInstances retainNonConfigurationInstances() { 1548 Object activity = onRetainNonConfigurationInstance(); 1549 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1550 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1551 boolean retainLoaders = false; 1552 if (mAllLoaderManagers != null) { 1553 // prune out any loader managers that were already stopped and so 1554 // have nothing useful to retain. 1555 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 1556 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 1557 if (lm.mRetaining) { 1558 retainLoaders = true; 1559 } else { 1560 lm.doDestroy(); 1561 mAllLoaderManagers.removeAt(i); 1562 } 1563 } 1564 } 1565 if (activity == null && children == null && fragments == null && !retainLoaders) { 1566 return null; 1567 } 1568 1569 NonConfigurationInstances nci = new NonConfigurationInstances(); 1570 nci.activity = activity; 1571 nci.children = children; 1572 nci.fragments = fragments; 1573 nci.loaders = mAllLoaderManagers; 1574 return nci; 1575 } 1576 1577 public void onLowMemory() { 1578 mCalled = true; 1579 mFragments.dispatchLowMemory(); 1580 } 1581 1582 /** 1583 * Return the FragmentManager for interacting with fragments associated 1584 * with this activity. 1585 */ 1586 public FragmentManager getFragmentManager() { 1587 return mFragments; 1588 } 1589 1590 void invalidateFragmentIndex(int index) { 1591 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1592 if (mAllLoaderManagers != null) { 1593 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 1594 if (lm != null) { 1595 lm.doDestroy(); 1596 } 1597 mAllLoaderManagers.remove(index); 1598 } 1599 } 1600 1601 /** 1602 * Called when a Fragment is being attached to this activity, immediately 1603 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1604 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1605 */ 1606 public void onAttachFragment(Fragment fragment) { 1607 } 1608 1609 /** 1610 * Wrapper around 1611 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1612 * that gives the resulting {@link Cursor} to call 1613 * {@link #startManagingCursor} so that the activity will manage its 1614 * lifecycle for you. 1615 * 1616 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1617 * or later, consider instead using {@link LoaderManager} instead, available 1618 * via {@link #getLoaderManager()}.</em> 1619 * 1620 * @param uri The URI of the content provider to query. 1621 * @param projection List of columns to return. 1622 * @param selection SQL WHERE clause. 1623 * @param sortOrder SQL ORDER BY clause. 1624 * 1625 * @return The Cursor that was returned by query(). 1626 * 1627 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1628 * @see #startManagingCursor 1629 * @hide 1630 * 1631 * @deprecated Use {@link CursorLoader} instead. 1632 */ 1633 @Deprecated 1634 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1635 String sortOrder) { 1636 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1637 if (c != null) { 1638 startManagingCursor(c); 1639 } 1640 return c; 1641 } 1642 1643 /** 1644 * Wrapper around 1645 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1646 * that gives the resulting {@link Cursor} to call 1647 * {@link #startManagingCursor} so that the activity will manage its 1648 * lifecycle for you. 1649 * 1650 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1651 * or later, consider instead using {@link LoaderManager} instead, available 1652 * via {@link #getLoaderManager()}.</em> 1653 * 1654 * @param uri The URI of the content provider to query. 1655 * @param projection List of columns to return. 1656 * @param selection SQL WHERE clause. 1657 * @param selectionArgs The arguments to selection, if any ?s are pesent 1658 * @param sortOrder SQL ORDER BY clause. 1659 * 1660 * @return The Cursor that was returned by query(). 1661 * 1662 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1663 * @see #startManagingCursor 1664 * 1665 * @deprecated Use {@link CursorLoader} instead. 1666 */ 1667 @Deprecated 1668 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1669 String[] selectionArgs, String sortOrder) { 1670 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1671 if (c != null) { 1672 startManagingCursor(c); 1673 } 1674 return c; 1675 } 1676 1677 /** 1678 * This method allows the activity to take care of managing the given 1679 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1680 * That is, when the activity is stopped it will automatically call 1681 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1682 * it will call {@link Cursor#requery} for you. When the activity is 1683 * destroyed, all managed Cursors will be closed automatically. 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 * @param c The Cursor to be managed. 1690 * 1691 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1692 * @see #stopManagingCursor 1693 * 1694 * @deprecated Use {@link CursorLoader} instead. 1695 */ 1696 @Deprecated 1697 public void startManagingCursor(Cursor c) { 1698 synchronized (mManagedCursors) { 1699 mManagedCursors.add(new ManagedCursor(c)); 1700 } 1701 } 1702 1703 /** 1704 * Given a Cursor that was previously given to 1705 * {@link #startManagingCursor}, stop the activity's management of that 1706 * cursor. 1707 * 1708 * @param c The Cursor that was being managed. 1709 * 1710 * @see #startManagingCursor 1711 * 1712 * @deprecated Use {@link CursorLoader} instead. 1713 */ 1714 @Deprecated 1715 public void stopManagingCursor(Cursor c) { 1716 synchronized (mManagedCursors) { 1717 final int N = mManagedCursors.size(); 1718 for (int i=0; i<N; i++) { 1719 ManagedCursor mc = mManagedCursors.get(i); 1720 if (mc.mCursor == c) { 1721 mManagedCursors.remove(i); 1722 break; 1723 } 1724 } 1725 } 1726 } 1727 1728 /** 1729 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1730 * this is a no-op. 1731 * @hide 1732 */ 1733 @Deprecated 1734 public void setPersistent(boolean isPersistent) { 1735 } 1736 1737 /** 1738 * Finds a view that was identified by the id attribute from the XML that 1739 * was processed in {@link #onCreate}. 1740 * 1741 * @return The view if found or null otherwise. 1742 */ 1743 public View findViewById(int id) { 1744 return getWindow().findViewById(id); 1745 } 1746 1747 /** 1748 * Retrieve a reference to this activity's ActionBar. 1749 * 1750 * @return The Activity's ActionBar, or null if it does not have one. 1751 */ 1752 public ActionBar getActionBar() { 1753 initActionBar(); 1754 return mActionBar; 1755 } 1756 1757 /** 1758 * Creates a new ActionBar, locates the inflated ActionBarView, 1759 * initializes the ActionBar with the view, and sets mActionBar. 1760 */ 1761 private void initActionBar() { 1762 Window window = getWindow(); 1763 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1764 return; 1765 } 1766 1767 mActionBar = new ActionBarImpl(this); 1768 } 1769 1770 /** 1771 * Set the activity content from a layout resource. The resource will be 1772 * inflated, adding all top-level views to the activity. 1773 * 1774 * @param layoutResID Resource ID to be inflated. 1775 * 1776 * @see #setContentView(android.view.View) 1777 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1778 */ 1779 public void setContentView(int layoutResID) { 1780 getWindow().setContentView(layoutResID); 1781 initActionBar(); 1782 } 1783 1784 /** 1785 * Set the activity content to an explicit view. This view is placed 1786 * directly into the activity's view hierarchy. It can itself be a complex 1787 * view hierarchy. When calling this method, the layout parameters of the 1788 * specified view are ignored. Both the width and the height of the view are 1789 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1790 * your own layout parameters, invoke 1791 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1792 * instead. 1793 * 1794 * @param view The desired content to display. 1795 * 1796 * @see #setContentView(int) 1797 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1798 */ 1799 public void setContentView(View view) { 1800 getWindow().setContentView(view); 1801 initActionBar(); 1802 } 1803 1804 /** 1805 * Set the activity content to an explicit view. This view is placed 1806 * directly into the activity's view hierarchy. It can itself be a complex 1807 * view hierarchy. 1808 * 1809 * @param view The desired content to display. 1810 * @param params Layout parameters for the view. 1811 * 1812 * @see #setContentView(android.view.View) 1813 * @see #setContentView(int) 1814 */ 1815 public void setContentView(View view, ViewGroup.LayoutParams params) { 1816 getWindow().setContentView(view, params); 1817 initActionBar(); 1818 } 1819 1820 /** 1821 * Add an additional content view to the activity. Added after any existing 1822 * ones in the activity -- existing views are NOT removed. 1823 * 1824 * @param view The desired content to display. 1825 * @param params Layout parameters for the view. 1826 */ 1827 public void addContentView(View view, ViewGroup.LayoutParams params) { 1828 getWindow().addContentView(view, params); 1829 initActionBar(); 1830 } 1831 1832 /** 1833 * Sets whether this activity is finished when touched outside its window's 1834 * bounds. 1835 */ 1836 public void setFinishOnTouchOutside(boolean finish) { 1837 mWindow.setCloseOnTouchOutside(finish); 1838 } 1839 1840 /** 1841 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1842 * keys. 1843 * 1844 * @see #setDefaultKeyMode 1845 */ 1846 static public final int DEFAULT_KEYS_DISABLE = 0; 1847 /** 1848 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1849 * key handling. 1850 * 1851 * @see #setDefaultKeyMode 1852 */ 1853 static public final int DEFAULT_KEYS_DIALER = 1; 1854 /** 1855 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1856 * default key handling. 1857 * 1858 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1859 * 1860 * @see #setDefaultKeyMode 1861 */ 1862 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1863 /** 1864 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1865 * will start an application-defined search. (If the application or activity does not 1866 * actually define a search, the the keys will be ignored.) 1867 * 1868 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1869 * 1870 * @see #setDefaultKeyMode 1871 */ 1872 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1873 1874 /** 1875 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1876 * will start a global search (typically web search, but some platforms may define alternate 1877 * methods for global search) 1878 * 1879 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1880 * 1881 * @see #setDefaultKeyMode 1882 */ 1883 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1884 1885 /** 1886 * Select the default key handling for this activity. This controls what 1887 * will happen to key events that are not otherwise handled. The default 1888 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1889 * floor. Other modes allow you to launch the dialer 1890 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1891 * menu without requiring the menu key be held down 1892 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1893 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1894 * 1895 * <p>Note that the mode selected here does not impact the default 1896 * handling of system keys, such as the "back" and "menu" keys, and your 1897 * activity and its views always get a first chance to receive and handle 1898 * all application keys. 1899 * 1900 * @param mode The desired default key mode constant. 1901 * 1902 * @see #DEFAULT_KEYS_DISABLE 1903 * @see #DEFAULT_KEYS_DIALER 1904 * @see #DEFAULT_KEYS_SHORTCUT 1905 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1906 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1907 * @see #onKeyDown 1908 */ 1909 public final void setDefaultKeyMode(int mode) { 1910 mDefaultKeyMode = mode; 1911 1912 // Some modes use a SpannableStringBuilder to track & dispatch input events 1913 // This list must remain in sync with the switch in onKeyDown() 1914 switch (mode) { 1915 case DEFAULT_KEYS_DISABLE: 1916 case DEFAULT_KEYS_SHORTCUT: 1917 mDefaultKeySsb = null; // not used in these modes 1918 break; 1919 case DEFAULT_KEYS_DIALER: 1920 case DEFAULT_KEYS_SEARCH_LOCAL: 1921 case DEFAULT_KEYS_SEARCH_GLOBAL: 1922 mDefaultKeySsb = new SpannableStringBuilder(); 1923 Selection.setSelection(mDefaultKeySsb,0); 1924 break; 1925 default: 1926 throw new IllegalArgumentException(); 1927 } 1928 } 1929 1930 /** 1931 * Called when a key was pressed down and not handled by any of the views 1932 * inside of the activity. So, for example, key presses while the cursor 1933 * is inside a TextView will not trigger the event (unless it is a navigation 1934 * to another object) because TextView handles its own key presses. 1935 * 1936 * <p>If the focused view didn't want this event, this method is called. 1937 * 1938 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1939 * by calling {@link #onBackPressed()}, though the behavior varies based 1940 * on the application compatibility mode: for 1941 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1942 * it will set up the dispatch to call {@link #onKeyUp} where the action 1943 * will be performed; for earlier applications, it will perform the 1944 * action immediately in on-down, as those versions of the platform 1945 * behaved. 1946 * 1947 * <p>Other additional default key handling may be performed 1948 * if configured with {@link #setDefaultKeyMode}. 1949 * 1950 * @return Return <code>true</code> to prevent this event from being propagated 1951 * further, or <code>false</code> to indicate that you have not handled 1952 * this event and it should continue to be propagated. 1953 * @see #onKeyUp 1954 * @see android.view.KeyEvent 1955 */ 1956 public boolean onKeyDown(int keyCode, KeyEvent event) { 1957 if (keyCode == KeyEvent.KEYCODE_BACK) { 1958 if (getApplicationInfo().targetSdkVersion 1959 >= Build.VERSION_CODES.ECLAIR) { 1960 event.startTracking(); 1961 } else { 1962 onBackPressed(); 1963 } 1964 return true; 1965 } 1966 1967 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 1968 return false; 1969 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 1970 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 1971 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 1972 return true; 1973 } 1974 return false; 1975 } else { 1976 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 1977 boolean clearSpannable = false; 1978 boolean handled; 1979 if ((event.getRepeatCount() != 0) || event.isSystem()) { 1980 clearSpannable = true; 1981 handled = false; 1982 } else { 1983 handled = TextKeyListener.getInstance().onKeyDown( 1984 null, mDefaultKeySsb, keyCode, event); 1985 if (handled && mDefaultKeySsb.length() > 0) { 1986 // something useable has been typed - dispatch it now. 1987 1988 final String str = mDefaultKeySsb.toString(); 1989 clearSpannable = true; 1990 1991 switch (mDefaultKeyMode) { 1992 case DEFAULT_KEYS_DIALER: 1993 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 1994 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 1995 startActivity(intent); 1996 break; 1997 case DEFAULT_KEYS_SEARCH_LOCAL: 1998 startSearch(str, false, null, false); 1999 break; 2000 case DEFAULT_KEYS_SEARCH_GLOBAL: 2001 startSearch(str, false, null, true); 2002 break; 2003 } 2004 } 2005 } 2006 if (clearSpannable) { 2007 mDefaultKeySsb.clear(); 2008 mDefaultKeySsb.clearSpans(); 2009 Selection.setSelection(mDefaultKeySsb,0); 2010 } 2011 return handled; 2012 } 2013 } 2014 2015 /** 2016 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2017 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2018 * the event). 2019 */ 2020 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2021 return false; 2022 } 2023 2024 /** 2025 * Called when a key was released and not handled by any of the views 2026 * inside of the activity. So, for example, key presses while the cursor 2027 * is inside a TextView will not trigger the event (unless it is a navigation 2028 * to another object) because TextView handles its own key presses. 2029 * 2030 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2031 * and go back. 2032 * 2033 * @return Return <code>true</code> to prevent this event from being propagated 2034 * further, or <code>false</code> to indicate that you have not handled 2035 * this event and it should continue to be propagated. 2036 * @see #onKeyDown 2037 * @see KeyEvent 2038 */ 2039 public boolean onKeyUp(int keyCode, KeyEvent event) { 2040 if (getApplicationInfo().targetSdkVersion 2041 >= Build.VERSION_CODES.ECLAIR) { 2042 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2043 && !event.isCanceled()) { 2044 onBackPressed(); 2045 return true; 2046 } 2047 } 2048 return false; 2049 } 2050 2051 /** 2052 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2053 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2054 * the event). 2055 */ 2056 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2057 return false; 2058 } 2059 2060 /** 2061 * Called when the activity has detected the user's press of the back 2062 * key. The default implementation simply finishes the current activity, 2063 * but you can override this to do whatever you want. 2064 */ 2065 public void onBackPressed() { 2066 if (!mFragments.popBackStackImmediate()) { 2067 finish(); 2068 } 2069 } 2070 2071 /** 2072 * Called when a key shortcut event is not handled by any of the views in the Activity. 2073 * Override this method to implement global key shortcuts for the Activity. 2074 * Key shortcuts can also be implemented by setting the 2075 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2076 * 2077 * @param keyCode The value in event.getKeyCode(). 2078 * @param event Description of the key event. 2079 * @return True if the key shortcut was handled. 2080 */ 2081 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2082 return false; 2083 } 2084 2085 /** 2086 * Called when a touch screen event was not handled by any of the views 2087 * under it. This is most useful to process touch events that happen 2088 * outside of your window bounds, where there is no view to receive it. 2089 * 2090 * @param event The touch screen event being processed. 2091 * 2092 * @return Return true if you have consumed the event, false if you haven't. 2093 * The default implementation always returns false. 2094 */ 2095 public boolean onTouchEvent(MotionEvent event) { 2096 if (mWindow.shouldCloseOnTouch(this, event)) { 2097 finish(); 2098 return true; 2099 } 2100 2101 return false; 2102 } 2103 2104 /** 2105 * Called when the trackball was moved and not handled by any of the 2106 * views inside of the activity. So, for example, if the trackball moves 2107 * while focus is on a button, you will receive a call here because 2108 * buttons do not normally do anything with trackball events. The call 2109 * here happens <em>before</em> trackball movements are converted to 2110 * DPAD key events, which then get sent back to the view hierarchy, and 2111 * will be processed at the point for things like focus navigation. 2112 * 2113 * @param event The trackball event being processed. 2114 * 2115 * @return Return true if you have consumed the event, false if you haven't. 2116 * The default implementation always returns false. 2117 */ 2118 public boolean onTrackballEvent(MotionEvent event) { 2119 return false; 2120 } 2121 2122 /** 2123 * Called when a generic motion event was not handled by any of the 2124 * views inside of the activity. 2125 * <p> 2126 * Generic motion events describe joystick movements, mouse hovers, track pad 2127 * touches, scroll wheel movements and other input events. The 2128 * {@link MotionEvent#getSource() source} of the motion event specifies 2129 * the class of input that was received. Implementations of this method 2130 * must examine the bits in the source before processing the event. 2131 * The following code example shows how this is done. 2132 * </p><p> 2133 * Generic motion events with source class 2134 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2135 * are delivered to the view under the pointer. All other generic motion events are 2136 * delivered to the focused view. 2137 * </p><p> 2138 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2139 * handle this event. 2140 * </p> 2141 * 2142 * @param event The generic motion event being processed. 2143 * 2144 * @return Return true if you have consumed the event, false if you haven't. 2145 * The default implementation always returns false. 2146 */ 2147 public boolean onGenericMotionEvent(MotionEvent event) { 2148 return false; 2149 } 2150 2151 /** 2152 * Called whenever a key, touch, or trackball event is dispatched to the 2153 * activity. Implement this method if you wish to know that the user has 2154 * interacted with the device in some way while your activity is running. 2155 * This callback and {@link #onUserLeaveHint} are intended to help 2156 * activities manage status bar notifications intelligently; specifically, 2157 * for helping activities determine the proper time to cancel a notfication. 2158 * 2159 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2160 * be accompanied by calls to {@link #onUserInteraction}. This 2161 * ensures that your activity will be told of relevant user activity such 2162 * as pulling down the notification pane and touching an item there. 2163 * 2164 * <p>Note that this callback will be invoked for the touch down action 2165 * that begins a touch gesture, but may not be invoked for the touch-moved 2166 * and touch-up actions that follow. 2167 * 2168 * @see #onUserLeaveHint() 2169 */ 2170 public void onUserInteraction() { 2171 } 2172 2173 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2174 // Update window manager if: we have a view, that view is 2175 // attached to its parent (which will be a RootView), and 2176 // this activity is not embedded. 2177 if (mParent == null) { 2178 View decor = mDecor; 2179 if (decor != null && decor.getParent() != null) { 2180 getWindowManager().updateViewLayout(decor, params); 2181 } 2182 } 2183 } 2184 2185 public void onContentChanged() { 2186 } 2187 2188 /** 2189 * Called when the current {@link Window} of the activity gains or loses 2190 * focus. This is the best indicator of whether this activity is visible 2191 * to the user. The default implementation clears the key tracking 2192 * state, so should always be called. 2193 * 2194 * <p>Note that this provides information about global focus state, which 2195 * is managed independently of activity lifecycles. As such, while focus 2196 * changes will generally have some relation to lifecycle changes (an 2197 * activity that is stopped will not generally get window focus), you 2198 * should not rely on any particular order between the callbacks here and 2199 * those in the other lifecycle methods such as {@link #onResume}. 2200 * 2201 * <p>As a general rule, however, a resumed activity will have window 2202 * focus... unless it has displayed other dialogs or popups that take 2203 * input focus, in which case the activity itself will not have focus 2204 * when the other windows have it. Likewise, the system may display 2205 * system-level windows (such as the status bar notification panel or 2206 * a system alert) which will temporarily take window input focus without 2207 * pausing the foreground activity. 2208 * 2209 * @param hasFocus Whether the window of this activity has focus. 2210 * 2211 * @see #hasWindowFocus() 2212 * @see #onResume 2213 * @see View#onWindowFocusChanged(boolean) 2214 */ 2215 public void onWindowFocusChanged(boolean hasFocus) { 2216 } 2217 2218 /** 2219 * Called when the main window associated with the activity has been 2220 * attached to the window manager. 2221 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2222 * for more information. 2223 * @see View#onAttachedToWindow 2224 */ 2225 public void onAttachedToWindow() { 2226 } 2227 2228 /** 2229 * Called when the main window associated with the activity has been 2230 * detached from the window manager. 2231 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2232 * for more information. 2233 * @see View#onDetachedFromWindow 2234 */ 2235 public void onDetachedFromWindow() { 2236 } 2237 2238 /** 2239 * Returns true if this activity's <em>main</em> window currently has window focus. 2240 * Note that this is not the same as the view itself having focus. 2241 * 2242 * @return True if this activity's main window currently has window focus. 2243 * 2244 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2245 */ 2246 public boolean hasWindowFocus() { 2247 Window w = getWindow(); 2248 if (w != null) { 2249 View d = w.getDecorView(); 2250 if (d != null) { 2251 return d.hasWindowFocus(); 2252 } 2253 } 2254 return false; 2255 } 2256 2257 /** 2258 * Called to process key events. You can override this to intercept all 2259 * key events before they are dispatched to the window. Be sure to call 2260 * this implementation for key events that should be handled normally. 2261 * 2262 * @param event The key event. 2263 * 2264 * @return boolean Return true if this event was consumed. 2265 */ 2266 public boolean dispatchKeyEvent(KeyEvent event) { 2267 onUserInteraction(); 2268 Window win = getWindow(); 2269 if (win.superDispatchKeyEvent(event)) { 2270 return true; 2271 } 2272 View decor = mDecor; 2273 if (decor == null) decor = win.getDecorView(); 2274 return event.dispatch(this, decor != null 2275 ? decor.getKeyDispatcherState() : null, this); 2276 } 2277 2278 /** 2279 * Called to process a key shortcut event. 2280 * You can override this to intercept all key shortcut events before they are 2281 * dispatched to the window. Be sure to call this implementation for key shortcut 2282 * events that should be handled normally. 2283 * 2284 * @param event The key shortcut event. 2285 * @return True if this event was consumed. 2286 */ 2287 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2288 onUserInteraction(); 2289 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2290 return true; 2291 } 2292 return onKeyShortcut(event.getKeyCode(), event); 2293 } 2294 2295 /** 2296 * Called to process touch screen events. You can override this to 2297 * intercept all touch screen events before they are dispatched to the 2298 * window. Be sure to call this implementation for touch screen events 2299 * that should be handled normally. 2300 * 2301 * @param ev The touch screen event. 2302 * 2303 * @return boolean Return true if this event was consumed. 2304 */ 2305 public boolean dispatchTouchEvent(MotionEvent ev) { 2306 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2307 onUserInteraction(); 2308 } 2309 if (getWindow().superDispatchTouchEvent(ev)) { 2310 return true; 2311 } 2312 return onTouchEvent(ev); 2313 } 2314 2315 /** 2316 * Called to process trackball events. You can override this to 2317 * intercept all trackball events before they are dispatched to the 2318 * window. Be sure to call this implementation for trackball events 2319 * that should be handled normally. 2320 * 2321 * @param ev The trackball event. 2322 * 2323 * @return boolean Return true if this event was consumed. 2324 */ 2325 public boolean dispatchTrackballEvent(MotionEvent ev) { 2326 onUserInteraction(); 2327 if (getWindow().superDispatchTrackballEvent(ev)) { 2328 return true; 2329 } 2330 return onTrackballEvent(ev); 2331 } 2332 2333 /** 2334 * Called to process generic motion events. You can override this to 2335 * intercept all generic motion events before they are dispatched to the 2336 * window. Be sure to call this implementation for generic motion events 2337 * that should be handled normally. 2338 * 2339 * @param ev The generic motion event. 2340 * 2341 * @return boolean Return true if this event was consumed. 2342 */ 2343 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2344 onUserInteraction(); 2345 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2346 return true; 2347 } 2348 return onGenericMotionEvent(ev); 2349 } 2350 2351 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2352 event.setClassName(getClass().getName()); 2353 event.setPackageName(getPackageName()); 2354 2355 LayoutParams params = getWindow().getAttributes(); 2356 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2357 (params.height == LayoutParams.MATCH_PARENT); 2358 event.setFullScreen(isFullScreen); 2359 2360 CharSequence title = getTitle(); 2361 if (!TextUtils.isEmpty(title)) { 2362 event.getText().add(title); 2363 } 2364 2365 return true; 2366 } 2367 2368 /** 2369 * Default implementation of 2370 * {@link android.view.Window.Callback#onCreatePanelView} 2371 * for activities. This 2372 * simply returns null so that all panel sub-windows will have the default 2373 * menu behavior. 2374 */ 2375 public View onCreatePanelView(int featureId) { 2376 return null; 2377 } 2378 2379 /** 2380 * Default implementation of 2381 * {@link android.view.Window.Callback#onCreatePanelMenu} 2382 * for activities. This calls through to the new 2383 * {@link #onCreateOptionsMenu} method for the 2384 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2385 * so that subclasses of Activity don't need to deal with feature codes. 2386 */ 2387 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2388 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2389 boolean show = onCreateOptionsMenu(menu); 2390 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2391 return show; 2392 } 2393 return false; 2394 } 2395 2396 /** 2397 * Default implementation of 2398 * {@link android.view.Window.Callback#onPreparePanel} 2399 * for activities. This 2400 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2401 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2402 * panel, so that subclasses of 2403 * Activity don't need to deal with feature codes. 2404 */ 2405 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2406 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2407 boolean goforit = onPrepareOptionsMenu(menu); 2408 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2409 return goforit && menu.hasVisibleItems(); 2410 } 2411 return true; 2412 } 2413 2414 /** 2415 * {@inheritDoc} 2416 * 2417 * @return The default implementation returns true. 2418 */ 2419 public boolean onMenuOpened(int featureId, Menu menu) { 2420 if (featureId == Window.FEATURE_ACTION_BAR) { 2421 if (mActionBar != null) { 2422 mActionBar.dispatchMenuVisibilityChanged(true); 2423 } else { 2424 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2425 } 2426 } 2427 return true; 2428 } 2429 2430 /** 2431 * Default implementation of 2432 * {@link android.view.Window.Callback#onMenuItemSelected} 2433 * for activities. This calls through to the new 2434 * {@link #onOptionsItemSelected} method for the 2435 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2436 * panel, so that subclasses of 2437 * Activity don't need to deal with feature codes. 2438 */ 2439 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2440 switch (featureId) { 2441 case Window.FEATURE_OPTIONS_PANEL: 2442 // Put event logging here so it gets called even if subclass 2443 // doesn't call through to superclass's implmeentation of each 2444 // of these methods below 2445 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2446 if (onOptionsItemSelected(item)) { 2447 return true; 2448 } 2449 return mFragments.dispatchOptionsItemSelected(item); 2450 2451 case Window.FEATURE_CONTEXT_MENU: 2452 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2453 if (onContextItemSelected(item)) { 2454 return true; 2455 } 2456 return mFragments.dispatchContextItemSelected(item); 2457 2458 default: 2459 return false; 2460 } 2461 } 2462 2463 /** 2464 * Default implementation of 2465 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2466 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2467 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2468 * so that subclasses of Activity don't need to deal with feature codes. 2469 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2470 * {@link #onContextMenuClosed(Menu)} will be called. 2471 */ 2472 public void onPanelClosed(int featureId, Menu menu) { 2473 switch (featureId) { 2474 case Window.FEATURE_OPTIONS_PANEL: 2475 mFragments.dispatchOptionsMenuClosed(menu); 2476 onOptionsMenuClosed(menu); 2477 break; 2478 2479 case Window.FEATURE_CONTEXT_MENU: 2480 onContextMenuClosed(menu); 2481 break; 2482 2483 case Window.FEATURE_ACTION_BAR: 2484 mActionBar.dispatchMenuVisibilityChanged(false); 2485 break; 2486 } 2487 } 2488 2489 /** 2490 * Declare that the options menu has changed, so should be recreated. 2491 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2492 * time it needs to be displayed. 2493 */ 2494 public void invalidateOptionsMenu() { 2495 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2496 } 2497 2498 /** 2499 * Initialize the contents of the Activity's standard options menu. You 2500 * should place your menu items in to <var>menu</var>. 2501 * 2502 * <p>This is only called once, the first time the options menu is 2503 * displayed. To update the menu every time it is displayed, see 2504 * {@link #onPrepareOptionsMenu}. 2505 * 2506 * <p>The default implementation populates the menu with standard system 2507 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2508 * they will be correctly ordered with application-defined menu items. 2509 * Deriving classes should always call through to the base implementation. 2510 * 2511 * <p>You can safely hold on to <var>menu</var> (and any items created 2512 * from it), making modifications to it as desired, until the next 2513 * time onCreateOptionsMenu() is called. 2514 * 2515 * <p>When you add items to the menu, you can implement the Activity's 2516 * {@link #onOptionsItemSelected} method to handle them there. 2517 * 2518 * @param menu The options menu in which you place your items. 2519 * 2520 * @return You must return true for the menu to be displayed; 2521 * if you return false it will not be shown. 2522 * 2523 * @see #onPrepareOptionsMenu 2524 * @see #onOptionsItemSelected 2525 */ 2526 public boolean onCreateOptionsMenu(Menu menu) { 2527 if (mParent != null) { 2528 return mParent.onCreateOptionsMenu(menu); 2529 } 2530 return true; 2531 } 2532 2533 /** 2534 * Prepare the Screen's standard options menu to be displayed. This is 2535 * called right before the menu is shown, every time it is shown. You can 2536 * use this method to efficiently enable/disable items or otherwise 2537 * dynamically modify the contents. 2538 * 2539 * <p>The default implementation updates the system menu items based on the 2540 * activity's state. Deriving classes should always call through to the 2541 * base class implementation. 2542 * 2543 * @param menu The options menu as last shown or first initialized by 2544 * onCreateOptionsMenu(). 2545 * 2546 * @return You must return true for the menu to be displayed; 2547 * if you return false it will not be shown. 2548 * 2549 * @see #onCreateOptionsMenu 2550 */ 2551 public boolean onPrepareOptionsMenu(Menu menu) { 2552 if (mParent != null) { 2553 return mParent.onPrepareOptionsMenu(menu); 2554 } 2555 return true; 2556 } 2557 2558 /** 2559 * This hook is called whenever an item in your options menu is selected. 2560 * The default implementation simply returns false to have the normal 2561 * processing happen (calling the item's Runnable or sending a message to 2562 * its Handler as appropriate). You can use this method for any items 2563 * for which you would like to do processing without those other 2564 * facilities. 2565 * 2566 * <p>Derived classes should call through to the base class for it to 2567 * perform the default menu handling. 2568 * 2569 * @param item The menu item that was selected. 2570 * 2571 * @return boolean Return false to allow normal menu processing to 2572 * proceed, true to consume it here. 2573 * 2574 * @see #onCreateOptionsMenu 2575 */ 2576 public boolean onOptionsItemSelected(MenuItem item) { 2577 if (mParent != null) { 2578 return mParent.onOptionsItemSelected(item); 2579 } 2580 return false; 2581 } 2582 2583 /** 2584 * This hook is called whenever the options menu is being closed (either by the user canceling 2585 * the menu with the back/menu button, or when an item is selected). 2586 * 2587 * @param menu The options menu as last shown or first initialized by 2588 * onCreateOptionsMenu(). 2589 */ 2590 public void onOptionsMenuClosed(Menu menu) { 2591 if (mParent != null) { 2592 mParent.onOptionsMenuClosed(menu); 2593 } 2594 } 2595 2596 /** 2597 * Programmatically opens the options menu. If the options menu is already 2598 * open, this method does nothing. 2599 */ 2600 public void openOptionsMenu() { 2601 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2602 } 2603 2604 /** 2605 * Progammatically closes the options menu. If the options menu is already 2606 * closed, this method does nothing. 2607 */ 2608 public void closeOptionsMenu() { 2609 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2610 } 2611 2612 /** 2613 * Called when a context menu for the {@code view} is about to be shown. 2614 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2615 * time the context menu is about to be shown and should be populated for 2616 * the view (or item inside the view for {@link AdapterView} subclasses, 2617 * this can be found in the {@code menuInfo})). 2618 * <p> 2619 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2620 * item has been selected. 2621 * <p> 2622 * It is not safe to hold onto the context menu after this method returns. 2623 * {@inheritDoc} 2624 */ 2625 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2626 } 2627 2628 /** 2629 * Registers a context menu to be shown for the given view (multiple views 2630 * can show the context menu). This method will set the 2631 * {@link OnCreateContextMenuListener} on the view to this activity, so 2632 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2633 * called when it is time to show the context menu. 2634 * 2635 * @see #unregisterForContextMenu(View) 2636 * @param view The view that should show a context menu. 2637 */ 2638 public void registerForContextMenu(View view) { 2639 view.setOnCreateContextMenuListener(this); 2640 } 2641 2642 /** 2643 * Prevents a context menu to be shown for the given view. This method will remove the 2644 * {@link OnCreateContextMenuListener} on the view. 2645 * 2646 * @see #registerForContextMenu(View) 2647 * @param view The view that should stop showing a context menu. 2648 */ 2649 public void unregisterForContextMenu(View view) { 2650 view.setOnCreateContextMenuListener(null); 2651 } 2652 2653 /** 2654 * Programmatically opens the context menu for a particular {@code view}. 2655 * The {@code view} should have been added via 2656 * {@link #registerForContextMenu(View)}. 2657 * 2658 * @param view The view to show the context menu for. 2659 */ 2660 public void openContextMenu(View view) { 2661 view.showContextMenu(); 2662 } 2663 2664 /** 2665 * Programmatically closes the most recently opened context menu, if showing. 2666 */ 2667 public void closeContextMenu() { 2668 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2669 } 2670 2671 /** 2672 * This hook is called whenever an item in a context menu is selected. The 2673 * default implementation simply returns false to have the normal processing 2674 * happen (calling the item's Runnable or sending a message to its Handler 2675 * as appropriate). You can use this method for any items for which you 2676 * would like to do processing without those other facilities. 2677 * <p> 2678 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2679 * View that added this menu item. 2680 * <p> 2681 * Derived classes should call through to the base class for it to perform 2682 * the default menu handling. 2683 * 2684 * @param item The context menu item that was selected. 2685 * @return boolean Return false to allow normal context menu processing to 2686 * proceed, true to consume it here. 2687 */ 2688 public boolean onContextItemSelected(MenuItem item) { 2689 if (mParent != null) { 2690 return mParent.onContextItemSelected(item); 2691 } 2692 return false; 2693 } 2694 2695 /** 2696 * This hook is called whenever the context menu is being closed (either by 2697 * the user canceling the menu with the back/menu button, or when an item is 2698 * selected). 2699 * 2700 * @param menu The context menu that is being closed. 2701 */ 2702 public void onContextMenuClosed(Menu menu) { 2703 if (mParent != null) { 2704 mParent.onContextMenuClosed(menu); 2705 } 2706 } 2707 2708 /** 2709 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2710 */ 2711 @Deprecated 2712 protected Dialog onCreateDialog(int id) { 2713 return null; 2714 } 2715 2716 /** 2717 * Callback for creating dialogs that are managed (saved and restored) for you 2718 * by the activity. The default implementation calls through to 2719 * {@link #onCreateDialog(int)} for compatibility. 2720 * 2721 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2722 * or later, consider instead using a {@link DialogFragment} instead.</em> 2723 * 2724 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2725 * this method the first time, and hang onto it thereafter. Any dialog 2726 * that is created by this method will automatically be saved and restored 2727 * for you, including whether it is showing. 2728 * 2729 * <p>If you would like the activity to manage saving and restoring dialogs 2730 * for you, you should override this method and handle any ids that are 2731 * passed to {@link #showDialog}. 2732 * 2733 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2734 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2735 * 2736 * @param id The id of the dialog. 2737 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2738 * @return The dialog. If you return null, the dialog will not be created. 2739 * 2740 * @see #onPrepareDialog(int, Dialog, Bundle) 2741 * @see #showDialog(int, Bundle) 2742 * @see #dismissDialog(int) 2743 * @see #removeDialog(int) 2744 */ 2745 protected Dialog onCreateDialog(int id, Bundle args) { 2746 return onCreateDialog(id); 2747 } 2748 2749 /** 2750 * @deprecated Old no-arguments version of 2751 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2752 */ 2753 @Deprecated 2754 protected void onPrepareDialog(int id, Dialog dialog) { 2755 dialog.setOwnerActivity(this); 2756 } 2757 2758 /** 2759 * Provides an opportunity to prepare a managed dialog before it is being 2760 * shown. The default implementation calls through to 2761 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2762 * 2763 * <p> 2764 * Override this if you need to update a managed dialog based on the state 2765 * of the application each time it is shown. For example, a time picker 2766 * dialog might want to be updated with the current time. You should call 2767 * through to the superclass's implementation. The default implementation 2768 * will set this Activity as the owner activity on the Dialog. 2769 * 2770 * @param id The id of the managed dialog. 2771 * @param dialog The dialog. 2772 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2773 * @see #onCreateDialog(int, Bundle) 2774 * @see #showDialog(int) 2775 * @see #dismissDialog(int) 2776 * @see #removeDialog(int) 2777 */ 2778 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2779 onPrepareDialog(id, dialog); 2780 } 2781 2782 /** 2783 * Simple version of {@link #showDialog(int, Bundle)} that does not 2784 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2785 * with null arguments. 2786 */ 2787 public final void showDialog(int id) { 2788 showDialog(id, null); 2789 } 2790 2791 /** 2792 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2793 * will be made with the same id the first time this is called for a given 2794 * id. From thereafter, the dialog will be automatically saved and restored. 2795 * 2796 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2797 * or later, consider instead using a {@link DialogFragment} instead.</em> 2798 * 2799 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2800 * be made to provide an opportunity to do any timely preparation. 2801 * 2802 * @param id The id of the managed dialog. 2803 * @param args Arguments to pass through to the dialog. These will be saved 2804 * and restored for you. Note that if the dialog is already created, 2805 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2806 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2807 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2808 * @return Returns true if the Dialog was created; false is returned if 2809 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2810 * 2811 * @see Dialog 2812 * @see #onCreateDialog(int, Bundle) 2813 * @see #onPrepareDialog(int, Dialog, Bundle) 2814 * @see #dismissDialog(int) 2815 * @see #removeDialog(int) 2816 */ 2817 public final boolean showDialog(int id, Bundle args) { 2818 if (mManagedDialogs == null) { 2819 mManagedDialogs = new SparseArray<ManagedDialog>(); 2820 } 2821 ManagedDialog md = mManagedDialogs.get(id); 2822 if (md == null) { 2823 md = new ManagedDialog(); 2824 md.mDialog = createDialog(id, null, args); 2825 if (md.mDialog == null) { 2826 return false; 2827 } 2828 mManagedDialogs.put(id, md); 2829 } 2830 2831 md.mArgs = args; 2832 onPrepareDialog(id, md.mDialog, args); 2833 md.mDialog.show(); 2834 return true; 2835 } 2836 2837 /** 2838 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2839 * 2840 * @param id The id of the managed dialog. 2841 * 2842 * @throws IllegalArgumentException if the id was not previously shown via 2843 * {@link #showDialog(int)}. 2844 * 2845 * @see #onCreateDialog(int, Bundle) 2846 * @see #onPrepareDialog(int, Dialog, Bundle) 2847 * @see #showDialog(int) 2848 * @see #removeDialog(int) 2849 */ 2850 public final void dismissDialog(int id) { 2851 if (mManagedDialogs == null) { 2852 throw missingDialog(id); 2853 } 2854 2855 final ManagedDialog md = mManagedDialogs.get(id); 2856 if (md == null) { 2857 throw missingDialog(id); 2858 } 2859 md.mDialog.dismiss(); 2860 } 2861 2862 /** 2863 * Creates an exception to throw if a user passed in a dialog id that is 2864 * unexpected. 2865 */ 2866 private IllegalArgumentException missingDialog(int id) { 2867 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2868 + "shown via Activity#showDialog"); 2869 } 2870 2871 /** 2872 * Removes any internal references to a dialog managed by this Activity. 2873 * If the dialog is showing, it will dismiss it as part of the clean up. 2874 * 2875 * <p>This can be useful if you know that you will never show a dialog again and 2876 * want to avoid the overhead of saving and restoring it in the future. 2877 * 2878 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2879 * will not throw an exception if you try to remove an ID that does not 2880 * currently have an associated dialog.</p> 2881 * 2882 * @param id The id of the managed dialog. 2883 * 2884 * @see #onCreateDialog(int, Bundle) 2885 * @see #onPrepareDialog(int, Dialog, Bundle) 2886 * @see #showDialog(int) 2887 * @see #dismissDialog(int) 2888 */ 2889 public final void removeDialog(int id) { 2890 if (mManagedDialogs != null) { 2891 final ManagedDialog md = mManagedDialogs.get(id); 2892 if (md != null) { 2893 md.mDialog.dismiss(); 2894 mManagedDialogs.remove(id); 2895 } 2896 } 2897 } 2898 2899 /** 2900 * This hook is called when the user signals the desire to start a search. 2901 * 2902 * <p>You can use this function as a simple way to launch the search UI, in response to a 2903 * menu item, search button, or other widgets within your activity. Unless overidden, 2904 * calling this function is the same as calling 2905 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2906 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2907 * 2908 * <p>You can override this function to force global search, e.g. in response to a dedicated 2909 * search key, or to block search entirely (by simply returning false). 2910 * 2911 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2912 * The default implementation always returns {@code true}. 2913 * 2914 * @see android.app.SearchManager 2915 */ 2916 public boolean onSearchRequested() { 2917 startSearch(null, false, null, false); 2918 return true; 2919 } 2920 2921 /** 2922 * This hook is called to launch the search UI. 2923 * 2924 * <p>It is typically called from onSearchRequested(), either directly from 2925 * Activity.onSearchRequested() or from an overridden version in any given 2926 * Activity. If your goal is simply to activate search, it is preferred to call 2927 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2928 * is to inject specific data such as context data, it is preferred to <i>override</i> 2929 * onSearchRequested(), so that any callers to it will benefit from the override. 2930 * 2931 * @param initialQuery Any non-null non-empty string will be inserted as 2932 * pre-entered text in the search query box. 2933 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2934 * any further typing will replace it. This is useful for cases where an entire pre-formed 2935 * query is being inserted. If false, the selection point will be placed at the end of the 2936 * inserted query. This is useful when the inserted query is text that the user entered, 2937 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 2938 * if initialQuery is a non-empty string.</i> 2939 * @param appSearchData An application can insert application-specific 2940 * context here, in order to improve quality or specificity of its own 2941 * searches. This data will be returned with SEARCH intent(s). Null if 2942 * no extra data is required. 2943 * @param globalSearch If false, this will only launch the search that has been specifically 2944 * defined by the application (which is usually defined as a local search). If no default 2945 * search is defined in the current application or activity, global search will be launched. 2946 * If true, this will always launch a platform-global (e.g. web-based) search instead. 2947 * 2948 * @see android.app.SearchManager 2949 * @see #onSearchRequested 2950 */ 2951 public void startSearch(String initialQuery, boolean selectInitialQuery, 2952 Bundle appSearchData, boolean globalSearch) { 2953 ensureSearchManager(); 2954 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 2955 appSearchData, globalSearch); 2956 } 2957 2958 /** 2959 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 2960 * the search dialog. Made available for testing purposes. 2961 * 2962 * @param query The query to trigger. If empty, the request will be ignored. 2963 * @param appSearchData An application can insert application-specific 2964 * context here, in order to improve quality or specificity of its own 2965 * searches. This data will be returned with SEARCH intent(s). Null if 2966 * no extra data is required. 2967 */ 2968 public void triggerSearch(String query, Bundle appSearchData) { 2969 ensureSearchManager(); 2970 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 2971 } 2972 2973 /** 2974 * Request that key events come to this activity. Use this if your 2975 * activity has no views with focus, but the activity still wants 2976 * a chance to process key events. 2977 * 2978 * @see android.view.Window#takeKeyEvents 2979 */ 2980 public void takeKeyEvents(boolean get) { 2981 getWindow().takeKeyEvents(get); 2982 } 2983 2984 /** 2985 * Enable extended window features. This is a convenience for calling 2986 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 2987 * 2988 * @param featureId The desired feature as defined in 2989 * {@link android.view.Window}. 2990 * @return Returns true if the requested feature is supported and now 2991 * enabled. 2992 * 2993 * @see android.view.Window#requestFeature 2994 */ 2995 public final boolean requestWindowFeature(int featureId) { 2996 return getWindow().requestFeature(featureId); 2997 } 2998 2999 /** 3000 * Convenience for calling 3001 * {@link android.view.Window#setFeatureDrawableResource}. 3002 */ 3003 public final void setFeatureDrawableResource(int featureId, int resId) { 3004 getWindow().setFeatureDrawableResource(featureId, resId); 3005 } 3006 3007 /** 3008 * Convenience for calling 3009 * {@link android.view.Window#setFeatureDrawableUri}. 3010 */ 3011 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3012 getWindow().setFeatureDrawableUri(featureId, uri); 3013 } 3014 3015 /** 3016 * Convenience for calling 3017 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3018 */ 3019 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3020 getWindow().setFeatureDrawable(featureId, drawable); 3021 } 3022 3023 /** 3024 * Convenience for calling 3025 * {@link android.view.Window#setFeatureDrawableAlpha}. 3026 */ 3027 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3028 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3029 } 3030 3031 /** 3032 * Convenience for calling 3033 * {@link android.view.Window#getLayoutInflater}. 3034 */ 3035 public LayoutInflater getLayoutInflater() { 3036 return getWindow().getLayoutInflater(); 3037 } 3038 3039 /** 3040 * Returns a {@link MenuInflater} with this context. 3041 */ 3042 public MenuInflater getMenuInflater() { 3043 return new MenuInflater(this); 3044 } 3045 3046 @Override 3047 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3048 boolean first) { 3049 if (mParent == null) { 3050 super.onApplyThemeResource(theme, resid, first); 3051 } else { 3052 try { 3053 theme.setTo(mParent.getTheme()); 3054 } catch (Exception e) { 3055 // Empty 3056 } 3057 theme.applyStyle(resid, false); 3058 } 3059 } 3060 3061 /** 3062 * Launch an activity for which you would like a result when it finished. 3063 * When this activity exits, your 3064 * onActivityResult() method will be called with the given requestCode. 3065 * Using a negative requestCode is the same as calling 3066 * {@link #startActivity} (the activity is not launched as a sub-activity). 3067 * 3068 * <p>Note that this method should only be used with Intent protocols 3069 * that are defined to return a result. In other protocols (such as 3070 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3071 * not get the result when you expect. For example, if the activity you 3072 * are launching uses the singleTask launch mode, it will not run in your 3073 * task and thus you will immediately receive a cancel result. 3074 * 3075 * <p>As a special case, if you call startActivityForResult() with a requestCode 3076 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3077 * activity, then your window will not be displayed until a result is 3078 * returned back from the started activity. This is to avoid visible 3079 * flickering when redirecting to another activity. 3080 * 3081 * <p>This method throws {@link android.content.ActivityNotFoundException} 3082 * if there was no Activity found to run the given Intent. 3083 * 3084 * @param intent The intent to start. 3085 * @param requestCode If >= 0, this code will be returned in 3086 * onActivityResult() when the activity exits. 3087 * 3088 * @throws android.content.ActivityNotFoundException 3089 * 3090 * @see #startActivity 3091 */ 3092 public void startActivityForResult(Intent intent, int requestCode) { 3093 if (mParent == null) { 3094 Instrumentation.ActivityResult ar = 3095 mInstrumentation.execStartActivity( 3096 this, mMainThread.getApplicationThread(), mToken, this, 3097 intent, requestCode); 3098 if (ar != null) { 3099 mMainThread.sendActivityResult( 3100 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3101 ar.getResultData()); 3102 } 3103 if (requestCode >= 0) { 3104 // If this start is requesting a result, we can avoid making 3105 // the activity visible until the result is received. Setting 3106 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3107 // activity hidden during this time, to avoid flickering. 3108 // This can only be done when a result is requested because 3109 // that guarantees we will get information back when the 3110 // activity is finished, no matter what happens to it. 3111 mStartedActivity = true; 3112 } 3113 } else { 3114 mParent.startActivityFromChild(this, intent, requestCode); 3115 } 3116 } 3117 3118 /** 3119 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3120 * to use a IntentSender to describe the activity to be started. If 3121 * the IntentSender is for an activity, that activity will be started 3122 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3123 * here; otherwise, its associated action will be executed (such as 3124 * sending a broadcast) as if you had called 3125 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3126 * 3127 * @param intent The IntentSender to launch. 3128 * @param requestCode If >= 0, this code will be returned in 3129 * onActivityResult() when the activity exits. 3130 * @param fillInIntent If non-null, this will be provided as the 3131 * intent parameter to {@link IntentSender#sendIntent}. 3132 * @param flagsMask Intent flags in the original IntentSender that you 3133 * would like to change. 3134 * @param flagsValues Desired values for any bits set in 3135 * <var>flagsMask</var> 3136 * @param extraFlags Always set to 0. 3137 */ 3138 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3139 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3140 throws IntentSender.SendIntentException { 3141 if (mParent == null) { 3142 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3143 flagsMask, flagsValues, this); 3144 } else { 3145 mParent.startIntentSenderFromChild(this, intent, requestCode, 3146 fillInIntent, flagsMask, flagsValues, extraFlags); 3147 } 3148 } 3149 3150 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3151 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3152 throws IntentSender.SendIntentException { 3153 try { 3154 String resolvedType = null; 3155 if (fillInIntent != null) { 3156 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3157 } 3158 int result = ActivityManagerNative.getDefault() 3159 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3160 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3161 requestCode, flagsMask, flagsValues); 3162 if (result == IActivityManager.START_CANCELED) { 3163 throw new IntentSender.SendIntentException(); 3164 } 3165 Instrumentation.checkStartActivityResult(result, null); 3166 } catch (RemoteException e) { 3167 } 3168 if (requestCode >= 0) { 3169 // If this start is requesting a result, we can avoid making 3170 // the activity visible until the result is received. Setting 3171 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3172 // activity hidden during this time, to avoid flickering. 3173 // This can only be done when a result is requested because 3174 // that guarantees we will get information back when the 3175 // activity is finished, no matter what happens to it. 3176 mStartedActivity = true; 3177 } 3178 } 3179 3180 /** 3181 * Launch a new activity. You will not receive any information about when 3182 * the activity exits. This implementation overrides the base version, 3183 * providing information about 3184 * the activity performing the launch. Because of this additional 3185 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3186 * required; if not specified, the new activity will be added to the 3187 * task of the caller. 3188 * 3189 * <p>This method throws {@link android.content.ActivityNotFoundException} 3190 * if there was no Activity found to run the given Intent. 3191 * 3192 * @param intent The intent to start. 3193 * 3194 * @throws android.content.ActivityNotFoundException 3195 * 3196 * @see #startActivityForResult 3197 */ 3198 @Override 3199 public void startActivity(Intent intent) { 3200 startActivityForResult(intent, -1); 3201 } 3202 3203 /** 3204 * Launch a new activity. You will not receive any information about when 3205 * the activity exits. This implementation overrides the base version, 3206 * providing information about 3207 * the activity performing the launch. Because of this additional 3208 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3209 * required; if not specified, the new activity will be added to the 3210 * task of the caller. 3211 * 3212 * <p>This method throws {@link android.content.ActivityNotFoundException} 3213 * if there was no Activity found to run the given Intent. 3214 * 3215 * @param intents The intents to start. 3216 * 3217 * @throws android.content.ActivityNotFoundException 3218 * 3219 * @see #startActivityForResult 3220 */ 3221 @Override 3222 public void startActivities(Intent[] intents) { 3223 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3224 mToken, this, intents); 3225 } 3226 3227 /** 3228 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3229 * to start; see 3230 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3231 * for more information. 3232 * 3233 * @param intent The IntentSender to launch. 3234 * @param fillInIntent If non-null, this will be provided as the 3235 * intent parameter to {@link IntentSender#sendIntent}. 3236 * @param flagsMask Intent flags in the original IntentSender that you 3237 * would like to change. 3238 * @param flagsValues Desired values for any bits set in 3239 * <var>flagsMask</var> 3240 * @param extraFlags Always set to 0. 3241 */ 3242 public void startIntentSender(IntentSender intent, 3243 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3244 throws IntentSender.SendIntentException { 3245 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3246 flagsValues, extraFlags); 3247 } 3248 3249 /** 3250 * A special variation to launch an activity only if a new activity 3251 * instance is needed to handle the given Intent. In other words, this is 3252 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3253 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3254 * singleTask or singleTop 3255 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3256 * and the activity 3257 * that handles <var>intent</var> is the same as your currently running 3258 * activity, then a new instance is not needed. In this case, instead of 3259 * the normal behavior of calling {@link #onNewIntent} this function will 3260 * return and you can handle the Intent yourself. 3261 * 3262 * <p>This function can only be called from a top-level activity; if it is 3263 * called from a child activity, a runtime exception will be thrown. 3264 * 3265 * @param intent The intent to start. 3266 * @param requestCode If >= 0, this code will be returned in 3267 * onActivityResult() when the activity exits, as described in 3268 * {@link #startActivityForResult}. 3269 * 3270 * @return If a new activity was launched then true is returned; otherwise 3271 * false is returned and you must handle the Intent yourself. 3272 * 3273 * @see #startActivity 3274 * @see #startActivityForResult 3275 */ 3276 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3277 if (mParent == null) { 3278 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3279 try { 3280 result = ActivityManagerNative.getDefault() 3281 .startActivity(mMainThread.getApplicationThread(), 3282 intent, intent.resolveTypeIfNeeded( 3283 getContentResolver()), 3284 null, 0, 3285 mToken, mEmbeddedID, requestCode, true, false); 3286 } catch (RemoteException e) { 3287 // Empty 3288 } 3289 3290 Instrumentation.checkStartActivityResult(result, intent); 3291 3292 if (requestCode >= 0) { 3293 // If this start is requesting a result, we can avoid making 3294 // the activity visible until the result is received. Setting 3295 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3296 // activity hidden during this time, to avoid flickering. 3297 // This can only be done when a result is requested because 3298 // that guarantees we will get information back when the 3299 // activity is finished, no matter what happens to it. 3300 mStartedActivity = true; 3301 } 3302 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3303 } 3304 3305 throw new UnsupportedOperationException( 3306 "startActivityIfNeeded can only be called from a top-level activity"); 3307 } 3308 3309 /** 3310 * Special version of starting an activity, for use when you are replacing 3311 * other activity components. You can use this to hand the Intent off 3312 * to the next Activity that can handle it. You typically call this in 3313 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3314 * 3315 * @param intent The intent to dispatch to the next activity. For 3316 * correct behavior, this must be the same as the Intent that started 3317 * your own activity; the only changes you can make are to the extras 3318 * inside of it. 3319 * 3320 * @return Returns a boolean indicating whether there was another Activity 3321 * to start: true if there was a next activity to start, false if there 3322 * wasn't. In general, if true is returned you will then want to call 3323 * finish() on yourself. 3324 */ 3325 public boolean startNextMatchingActivity(Intent intent) { 3326 if (mParent == null) { 3327 try { 3328 return ActivityManagerNative.getDefault() 3329 .startNextMatchingActivity(mToken, intent); 3330 } catch (RemoteException e) { 3331 // Empty 3332 } 3333 return false; 3334 } 3335 3336 throw new UnsupportedOperationException( 3337 "startNextMatchingActivity can only be called from a top-level activity"); 3338 } 3339 3340 /** 3341 * This is called when a child activity of this one calls its 3342 * {@link #startActivity} or {@link #startActivityForResult} method. 3343 * 3344 * <p>This method throws {@link android.content.ActivityNotFoundException} 3345 * if there was no Activity found to run the given Intent. 3346 * 3347 * @param child The activity making the call. 3348 * @param intent The intent to start. 3349 * @param requestCode Reply request code. < 0 if reply is not requested. 3350 * 3351 * @throws android.content.ActivityNotFoundException 3352 * 3353 * @see #startActivity 3354 * @see #startActivityForResult 3355 */ 3356 public void startActivityFromChild(Activity child, Intent intent, 3357 int requestCode) { 3358 Instrumentation.ActivityResult ar = 3359 mInstrumentation.execStartActivity( 3360 this, mMainThread.getApplicationThread(), mToken, child, 3361 intent, requestCode); 3362 if (ar != null) { 3363 mMainThread.sendActivityResult( 3364 mToken, child.mEmbeddedID, requestCode, 3365 ar.getResultCode(), ar.getResultData()); 3366 } 3367 } 3368 3369 /** 3370 * This is called when a Fragment in this activity calls its 3371 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3372 * method. 3373 * 3374 * <p>This method throws {@link android.content.ActivityNotFoundException} 3375 * if there was no Activity found to run the given Intent. 3376 * 3377 * @param fragment The fragment making the call. 3378 * @param intent The intent to start. 3379 * @param requestCode Reply request code. < 0 if reply is not requested. 3380 * 3381 * @throws android.content.ActivityNotFoundException 3382 * 3383 * @see Fragment#startActivity 3384 * @see Fragment#startActivityForResult 3385 */ 3386 public void startActivityFromFragment(Fragment fragment, Intent intent, 3387 int requestCode) { 3388 Instrumentation.ActivityResult ar = 3389 mInstrumentation.execStartActivity( 3390 this, mMainThread.getApplicationThread(), mToken, fragment, 3391 intent, requestCode); 3392 if (ar != null) { 3393 mMainThread.sendActivityResult( 3394 mToken, fragment.mWho, requestCode, 3395 ar.getResultCode(), ar.getResultData()); 3396 } 3397 } 3398 3399 /** 3400 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3401 * taking a IntentSender; see 3402 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3403 * for more information. 3404 */ 3405 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3406 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3407 int extraFlags) 3408 throws IntentSender.SendIntentException { 3409 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3410 flagsMask, flagsValues, child); 3411 } 3412 3413 /** 3414 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3415 * or {@link #finish} to specify an explicit transition animation to 3416 * perform next. 3417 * @param enterAnim A resource ID of the animation resource to use for 3418 * the incoming activity. Use 0 for no animation. 3419 * @param exitAnim A resource ID of the animation resource to use for 3420 * the outgoing activity. Use 0 for no animation. 3421 */ 3422 public void overridePendingTransition(int enterAnim, int exitAnim) { 3423 try { 3424 ActivityManagerNative.getDefault().overridePendingTransition( 3425 mToken, getPackageName(), enterAnim, exitAnim); 3426 } catch (RemoteException e) { 3427 } 3428 } 3429 3430 /** 3431 * Call this to set the result that your activity will return to its 3432 * caller. 3433 * 3434 * @param resultCode The result code to propagate back to the originating 3435 * activity, often RESULT_CANCELED or RESULT_OK 3436 * 3437 * @see #RESULT_CANCELED 3438 * @see #RESULT_OK 3439 * @see #RESULT_FIRST_USER 3440 * @see #setResult(int, Intent) 3441 */ 3442 public final void setResult(int resultCode) { 3443 synchronized (this) { 3444 mResultCode = resultCode; 3445 mResultData = null; 3446 } 3447 } 3448 3449 /** 3450 * Call this to set the result that your activity will return to its 3451 * caller. 3452 * 3453 * @param resultCode The result code to propagate back to the originating 3454 * activity, often RESULT_CANCELED or RESULT_OK 3455 * @param data The data to propagate back to the originating activity. 3456 * 3457 * @see #RESULT_CANCELED 3458 * @see #RESULT_OK 3459 * @see #RESULT_FIRST_USER 3460 * @see #setResult(int) 3461 */ 3462 public final void setResult(int resultCode, Intent data) { 3463 synchronized (this) { 3464 mResultCode = resultCode; 3465 mResultData = data; 3466 } 3467 } 3468 3469 /** 3470 * Return the name of the package that invoked this activity. This is who 3471 * the data in {@link #setResult setResult()} will be sent to. You can 3472 * use this information to validate that the recipient is allowed to 3473 * receive the data. 3474 * 3475 * <p>Note: if the calling activity is not expecting a result (that is it 3476 * did not use the {@link #startActivityForResult} 3477 * form that includes a request code), then the calling package will be 3478 * null. 3479 * 3480 * @return The package of the activity that will receive your 3481 * reply, or null if none. 3482 */ 3483 public String getCallingPackage() { 3484 try { 3485 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3486 } catch (RemoteException e) { 3487 return null; 3488 } 3489 } 3490 3491 /** 3492 * Return the name of the activity that invoked this activity. This is 3493 * who the data in {@link #setResult setResult()} will be sent to. You 3494 * can use this information to validate that the recipient is allowed to 3495 * receive the data. 3496 * 3497 * <p>Note: if the calling activity is not expecting a result (that is it 3498 * did not use the {@link #startActivityForResult} 3499 * form that includes a request code), then the calling package will be 3500 * null. 3501 * 3502 * @return String The full name of the activity that will receive your 3503 * reply, or null if none. 3504 */ 3505 public ComponentName getCallingActivity() { 3506 try { 3507 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3508 } catch (RemoteException e) { 3509 return null; 3510 } 3511 } 3512 3513 /** 3514 * Control whether this activity's main window is visible. This is intended 3515 * only for the special case of an activity that is not going to show a 3516 * UI itself, but can't just finish prior to onResume() because it needs 3517 * to wait for a service binding or such. Setting this to false allows 3518 * you to prevent your UI from being shown during that time. 3519 * 3520 * <p>The default value for this is taken from the 3521 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3522 */ 3523 public void setVisible(boolean visible) { 3524 if (mVisibleFromClient != visible) { 3525 mVisibleFromClient = visible; 3526 if (mVisibleFromServer) { 3527 if (visible) makeVisible(); 3528 else mDecor.setVisibility(View.INVISIBLE); 3529 } 3530 } 3531 } 3532 3533 void makeVisible() { 3534 if (!mWindowAdded) { 3535 ViewManager wm = getWindowManager(); 3536 wm.addView(mDecor, getWindow().getAttributes()); 3537 mWindowAdded = true; 3538 } 3539 mDecor.setVisibility(View.VISIBLE); 3540 } 3541 3542 /** 3543 * Check to see whether this activity is in the process of finishing, 3544 * either because you called {@link #finish} on it or someone else 3545 * has requested that it finished. This is often used in 3546 * {@link #onPause} to determine whether the activity is simply pausing or 3547 * completely finishing. 3548 * 3549 * @return If the activity is finishing, returns true; else returns false. 3550 * 3551 * @see #finish 3552 */ 3553 public boolean isFinishing() { 3554 return mFinished; 3555 } 3556 3557 /** 3558 * Check to see whether this activity is in the process of being destroyed in order to be 3559 * recreated with a new configuration. This is often used in 3560 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3561 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3562 * 3563 * @return If the activity is being torn down in order to be recreated with a new configuration, 3564 * returns true; else returns false. 3565 */ 3566 public boolean isChangingConfigurations() { 3567 return mChangingConfigurations; 3568 } 3569 3570 /** 3571 * Cause this Activity to be recreated with a new instance. This results 3572 * in essentially the same flow as when the Activity is created due to 3573 * a configuration change -- the current instance will go through its 3574 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3575 */ 3576 public void recreate() { 3577 if (mParent != null) { 3578 throw new IllegalStateException("Can only be called on top-level activity"); 3579 } 3580 if (Looper.myLooper() != mMainThread.getLooper()) { 3581 throw new IllegalStateException("Must be called from main thread"); 3582 } 3583 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3584 } 3585 3586 /** 3587 * Call this when your activity is done and should be closed. The 3588 * ActivityResult is propagated back to whoever launched you via 3589 * onActivityResult(). 3590 */ 3591 public void finish() { 3592 if (mParent == null) { 3593 int resultCode; 3594 Intent resultData; 3595 synchronized (this) { 3596 resultCode = mResultCode; 3597 resultData = mResultData; 3598 } 3599 if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken); 3600 try { 3601 if (ActivityManagerNative.getDefault() 3602 .finishActivity(mToken, resultCode, resultData)) { 3603 mFinished = true; 3604 } 3605 } catch (RemoteException e) { 3606 // Empty 3607 } 3608 } else { 3609 mParent.finishFromChild(this); 3610 } 3611 } 3612 3613 /** 3614 * This is called when a child activity of this one calls its 3615 * {@link #finish} method. The default implementation simply calls 3616 * finish() on this activity (the parent), finishing the entire group. 3617 * 3618 * @param child The activity making the call. 3619 * 3620 * @see #finish 3621 */ 3622 public void finishFromChild(Activity child) { 3623 finish(); 3624 } 3625 3626 /** 3627 * Force finish another activity that you had previously started with 3628 * {@link #startActivityForResult}. 3629 * 3630 * @param requestCode The request code of the activity that you had 3631 * given to startActivityForResult(). If there are multiple 3632 * activities started with this request code, they 3633 * will all be finished. 3634 */ 3635 public void finishActivity(int requestCode) { 3636 if (mParent == null) { 3637 try { 3638 ActivityManagerNative.getDefault() 3639 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3640 } catch (RemoteException e) { 3641 // Empty 3642 } 3643 } else { 3644 mParent.finishActivityFromChild(this, requestCode); 3645 } 3646 } 3647 3648 /** 3649 * This is called when a child activity of this one calls its 3650 * finishActivity(). 3651 * 3652 * @param child The activity making the call. 3653 * @param requestCode Request code that had been used to start the 3654 * activity. 3655 */ 3656 public void finishActivityFromChild(Activity child, int requestCode) { 3657 try { 3658 ActivityManagerNative.getDefault() 3659 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3660 } catch (RemoteException e) { 3661 // Empty 3662 } 3663 } 3664 3665 /** 3666 * Called when an activity you launched exits, giving you the requestCode 3667 * you started it with, the resultCode it returned, and any additional 3668 * data from it. The <var>resultCode</var> will be 3669 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3670 * didn't return any result, or crashed during its operation. 3671 * 3672 * <p>You will receive this call immediately before onResume() when your 3673 * activity is re-starting. 3674 * 3675 * @param requestCode The integer request code originally supplied to 3676 * startActivityForResult(), allowing you to identify who this 3677 * result came from. 3678 * @param resultCode The integer result code returned by the child activity 3679 * through its setResult(). 3680 * @param data An Intent, which can return result data to the caller 3681 * (various data can be attached to Intent "extras"). 3682 * 3683 * @see #startActivityForResult 3684 * @see #createPendingResult 3685 * @see #setResult(int) 3686 */ 3687 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3688 } 3689 3690 /** 3691 * Create a new PendingIntent object which you can hand to others 3692 * for them to use to send result data back to your 3693 * {@link #onActivityResult} callback. The created object will be either 3694 * one-shot (becoming invalid after a result is sent back) or multiple 3695 * (allowing any number of results to be sent through it). 3696 * 3697 * @param requestCode Private request code for the sender that will be 3698 * associated with the result data when it is returned. The sender can not 3699 * modify this value, allowing you to identify incoming results. 3700 * @param data Default data to supply in the result, which may be modified 3701 * by the sender. 3702 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3703 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3704 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3705 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3706 * or any of the flags as supported by 3707 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3708 * of the intent that can be supplied when the actual send happens. 3709 * 3710 * @return Returns an existing or new PendingIntent matching the given 3711 * parameters. May return null only if 3712 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3713 * supplied. 3714 * 3715 * @see PendingIntent 3716 */ 3717 public PendingIntent createPendingResult(int requestCode, Intent data, 3718 int flags) { 3719 String packageName = getPackageName(); 3720 try { 3721 IIntentSender target = 3722 ActivityManagerNative.getDefault().getIntentSender( 3723 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3724 mParent == null ? mToken : mParent.mToken, 3725 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3726 return target != null ? new PendingIntent(target) : null; 3727 } catch (RemoteException e) { 3728 // Empty 3729 } 3730 return null; 3731 } 3732 3733 /** 3734 * Change the desired orientation of this activity. If the activity 3735 * is currently in the foreground or otherwise impacting the screen 3736 * orientation, the screen will immediately be changed (possibly causing 3737 * the activity to be restarted). Otherwise, this will be used the next 3738 * time the activity is visible. 3739 * 3740 * @param requestedOrientation An orientation constant as used in 3741 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3742 */ 3743 public void setRequestedOrientation(int requestedOrientation) { 3744 if (mParent == null) { 3745 try { 3746 ActivityManagerNative.getDefault().setRequestedOrientation( 3747 mToken, requestedOrientation); 3748 } catch (RemoteException e) { 3749 // Empty 3750 } 3751 } else { 3752 mParent.setRequestedOrientation(requestedOrientation); 3753 } 3754 } 3755 3756 /** 3757 * Return the current requested orientation of the activity. This will 3758 * either be the orientation requested in its component's manifest, or 3759 * the last requested orientation given to 3760 * {@link #setRequestedOrientation(int)}. 3761 * 3762 * @return Returns an orientation constant as used in 3763 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3764 */ 3765 public int getRequestedOrientation() { 3766 if (mParent == null) { 3767 try { 3768 return ActivityManagerNative.getDefault() 3769 .getRequestedOrientation(mToken); 3770 } catch (RemoteException e) { 3771 // Empty 3772 } 3773 } else { 3774 return mParent.getRequestedOrientation(); 3775 } 3776 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3777 } 3778 3779 /** 3780 * Return the identifier of the task this activity is in. This identifier 3781 * will remain the same for the lifetime of the activity. 3782 * 3783 * @return Task identifier, an opaque integer. 3784 */ 3785 public int getTaskId() { 3786 try { 3787 return ActivityManagerNative.getDefault() 3788 .getTaskForActivity(mToken, false); 3789 } catch (RemoteException e) { 3790 return -1; 3791 } 3792 } 3793 3794 /** 3795 * Return whether this activity is the root of a task. The root is the 3796 * first activity in a task. 3797 * 3798 * @return True if this is the root activity, else false. 3799 */ 3800 public boolean isTaskRoot() { 3801 try { 3802 return ActivityManagerNative.getDefault() 3803 .getTaskForActivity(mToken, true) >= 0; 3804 } catch (RemoteException e) { 3805 return false; 3806 } 3807 } 3808 3809 /** 3810 * Move the task containing this activity to the back of the activity 3811 * stack. The activity's order within the task is unchanged. 3812 * 3813 * @param nonRoot If false then this only works if the activity is the root 3814 * of a task; if true it will work for any activity in 3815 * a task. 3816 * 3817 * @return If the task was moved (or it was already at the 3818 * back) true is returned, else false. 3819 */ 3820 public boolean moveTaskToBack(boolean nonRoot) { 3821 try { 3822 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3823 mToken, nonRoot); 3824 } catch (RemoteException e) { 3825 // Empty 3826 } 3827 return false; 3828 } 3829 3830 /** 3831 * Returns class name for this activity with the package prefix removed. 3832 * This is the default name used to read and write settings. 3833 * 3834 * @return The local class name. 3835 */ 3836 public String getLocalClassName() { 3837 final String pkg = getPackageName(); 3838 final String cls = mComponent.getClassName(); 3839 int packageLen = pkg.length(); 3840 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3841 || cls.charAt(packageLen) != '.') { 3842 return cls; 3843 } 3844 return cls.substring(packageLen+1); 3845 } 3846 3847 /** 3848 * Returns complete component name of this activity. 3849 * 3850 * @return Returns the complete component name for this activity 3851 */ 3852 public ComponentName getComponentName() 3853 { 3854 return mComponent; 3855 } 3856 3857 /** 3858 * Retrieve a {@link SharedPreferences} object for accessing preferences 3859 * that are private to this activity. This simply calls the underlying 3860 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3861 * class name as the preferences name. 3862 * 3863 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3864 * operation, {@link #MODE_WORLD_READABLE} and 3865 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3866 * 3867 * @return Returns the single SharedPreferences instance that can be used 3868 * to retrieve and modify the preference values. 3869 */ 3870 public SharedPreferences getPreferences(int mode) { 3871 return getSharedPreferences(getLocalClassName(), mode); 3872 } 3873 3874 private void ensureSearchManager() { 3875 if (mSearchManager != null) { 3876 return; 3877 } 3878 3879 mSearchManager = new SearchManager(this, null); 3880 } 3881 3882 @Override 3883 public Object getSystemService(String name) { 3884 if (getBaseContext() == null) { 3885 throw new IllegalStateException( 3886 "System services not available to Activities before onCreate()"); 3887 } 3888 3889 if (WINDOW_SERVICE.equals(name)) { 3890 return mWindowManager; 3891 } else if (SEARCH_SERVICE.equals(name)) { 3892 ensureSearchManager(); 3893 return mSearchManager; 3894 } 3895 return super.getSystemService(name); 3896 } 3897 3898 /** 3899 * Change the title associated with this activity. If this is a 3900 * top-level activity, the title for its window will change. If it 3901 * is an embedded activity, the parent can do whatever it wants 3902 * with it. 3903 */ 3904 public void setTitle(CharSequence title) { 3905 mTitle = title; 3906 onTitleChanged(title, mTitleColor); 3907 3908 if (mParent != null) { 3909 mParent.onChildTitleChanged(this, title); 3910 } 3911 } 3912 3913 /** 3914 * Change the title associated with this activity. If this is a 3915 * top-level activity, the title for its window will change. If it 3916 * is an embedded activity, the parent can do whatever it wants 3917 * with it. 3918 */ 3919 public void setTitle(int titleId) { 3920 setTitle(getText(titleId)); 3921 } 3922 3923 public void setTitleColor(int textColor) { 3924 mTitleColor = textColor; 3925 onTitleChanged(mTitle, textColor); 3926 } 3927 3928 public final CharSequence getTitle() { 3929 return mTitle; 3930 } 3931 3932 public final int getTitleColor() { 3933 return mTitleColor; 3934 } 3935 3936 protected void onTitleChanged(CharSequence title, int color) { 3937 if (mTitleReady) { 3938 final Window win = getWindow(); 3939 if (win != null) { 3940 win.setTitle(title); 3941 if (color != 0) { 3942 win.setTitleColor(color); 3943 } 3944 } 3945 } 3946 } 3947 3948 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 3949 } 3950 3951 /** 3952 * Sets the visibility of the progress bar in the title. 3953 * <p> 3954 * In order for the progress bar to be shown, the feature must be requested 3955 * via {@link #requestWindowFeature(int)}. 3956 * 3957 * @param visible Whether to show the progress bars in the title. 3958 */ 3959 public final void setProgressBarVisibility(boolean visible) { 3960 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 3961 Window.PROGRESS_VISIBILITY_OFF); 3962 } 3963 3964 /** 3965 * Sets the visibility of the indeterminate progress bar in the title. 3966 * <p> 3967 * In order for the progress bar to be shown, the feature must be requested 3968 * via {@link #requestWindowFeature(int)}. 3969 * 3970 * @param visible Whether to show the progress bars in the title. 3971 */ 3972 public final void setProgressBarIndeterminateVisibility(boolean visible) { 3973 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 3974 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 3975 } 3976 3977 /** 3978 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 3979 * is always indeterminate). 3980 * <p> 3981 * In order for the progress bar to be shown, the feature must be requested 3982 * via {@link #requestWindowFeature(int)}. 3983 * 3984 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 3985 */ 3986 public final void setProgressBarIndeterminate(boolean indeterminate) { 3987 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 3988 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 3989 } 3990 3991 /** 3992 * Sets the progress for the progress bars in the title. 3993 * <p> 3994 * In order for the progress bar to be shown, the feature must be requested 3995 * via {@link #requestWindowFeature(int)}. 3996 * 3997 * @param progress The progress for the progress bar. Valid ranges are from 3998 * 0 to 10000 (both inclusive). If 10000 is given, the progress 3999 * bar will be completely filled and will fade out. 4000 */ 4001 public final void setProgress(int progress) { 4002 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4003 } 4004 4005 /** 4006 * Sets the secondary progress for the progress bar in the title. This 4007 * progress is drawn between the primary progress (set via 4008 * {@link #setProgress(int)} and the background. It can be ideal for media 4009 * scenarios such as showing the buffering progress while the default 4010 * progress shows the play progress. 4011 * <p> 4012 * In order for the progress bar to be shown, the feature must be requested 4013 * via {@link #requestWindowFeature(int)}. 4014 * 4015 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4016 * 0 to 10000 (both inclusive). 4017 */ 4018 public final void setSecondaryProgress(int secondaryProgress) { 4019 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4020 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4021 } 4022 4023 /** 4024 * Suggests an audio stream whose volume should be changed by the hardware 4025 * volume controls. 4026 * <p> 4027 * The suggested audio stream will be tied to the window of this Activity. 4028 * If the Activity is switched, the stream set here is no longer the 4029 * suggested stream. The client does not need to save and restore the old 4030 * suggested stream value in onPause and onResume. 4031 * 4032 * @param streamType The type of the audio stream whose volume should be 4033 * changed by the hardware volume controls. It is not guaranteed that 4034 * the hardware volume controls will always change this stream's 4035 * volume (for example, if a call is in progress, its stream's volume 4036 * may be changed instead). To reset back to the default, use 4037 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4038 */ 4039 public final void setVolumeControlStream(int streamType) { 4040 getWindow().setVolumeControlStream(streamType); 4041 } 4042 4043 /** 4044 * Gets the suggested audio stream whose volume should be changed by the 4045 * harwdare volume controls. 4046 * 4047 * @return The suggested audio stream type whose volume should be changed by 4048 * the hardware volume controls. 4049 * @see #setVolumeControlStream(int) 4050 */ 4051 public final int getVolumeControlStream() { 4052 return getWindow().getVolumeControlStream(); 4053 } 4054 4055 /** 4056 * Runs the specified action on the UI thread. If the current thread is the UI 4057 * thread, then the action is executed immediately. If the current thread is 4058 * not the UI thread, the action is posted to the event queue of the UI thread. 4059 * 4060 * @param action the action to run on the UI thread 4061 */ 4062 public final void runOnUiThread(Runnable action) { 4063 if (Thread.currentThread() != mUiThread) { 4064 mHandler.post(action); 4065 } else { 4066 action.run(); 4067 } 4068 } 4069 4070 /** 4071 * Standard implementation of 4072 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4073 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4074 * This implementation does nothing and is for 4075 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4076 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4077 * 4078 * @see android.view.LayoutInflater#createView 4079 * @see android.view.Window#getLayoutInflater 4080 */ 4081 public View onCreateView(String name, Context context, AttributeSet attrs) { 4082 return null; 4083 } 4084 4085 /** 4086 * Standard implementation of 4087 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4088 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4089 * This implementation handles <fragment> tags to embed fragments inside 4090 * of the activity. 4091 * 4092 * @see android.view.LayoutInflater#createView 4093 * @see android.view.Window#getLayoutInflater 4094 */ 4095 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4096 if (!"fragment".equals(name)) { 4097 return onCreateView(name, context, attrs); 4098 } 4099 4100 String fname = attrs.getAttributeValue(null, "class"); 4101 TypedArray a = 4102 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4103 if (fname == null) { 4104 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4105 } 4106 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4107 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4108 a.recycle(); 4109 4110 int containerId = parent != null ? parent.getId() : 0; 4111 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4112 throw new IllegalArgumentException(attrs.getPositionDescription() 4113 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4114 } 4115 4116 // If we restored from a previous state, we may already have 4117 // instantiated this fragment from the state and should use 4118 // that instance instead of making a new one. 4119 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4120 if (fragment == null && tag != null) { 4121 fragment = mFragments.findFragmentByTag(tag); 4122 } 4123 if (fragment == null && containerId != View.NO_ID) { 4124 fragment = mFragments.findFragmentById(containerId); 4125 } 4126 4127 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4128 + Integer.toHexString(id) + " fname=" + fname 4129 + " existing=" + fragment); 4130 if (fragment == null) { 4131 fragment = Fragment.instantiate(this, fname); 4132 fragment.mFromLayout = true; 4133 fragment.mFragmentId = id != 0 ? id : containerId; 4134 fragment.mContainerId = containerId; 4135 fragment.mTag = tag; 4136 fragment.mInLayout = true; 4137 fragment.mImmediateActivity = this; 4138 fragment.mFragmentManager = mFragments; 4139 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4140 mFragments.addFragment(fragment, true); 4141 4142 } else if (fragment.mInLayout) { 4143 // A fragment already exists and it is not one we restored from 4144 // previous state. 4145 throw new IllegalArgumentException(attrs.getPositionDescription() 4146 + ": Duplicate id 0x" + Integer.toHexString(id) 4147 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4148 + " with another fragment for " + fname); 4149 } else { 4150 // This fragment was retained from a previous instance; get it 4151 // going now. 4152 fragment.mInLayout = true; 4153 fragment.mImmediateActivity = this; 4154 // If this fragment is newly instantiated (either right now, or 4155 // from last saved state), then give it the attributes to 4156 // initialize itself. 4157 if (!fragment.mRetaining) { 4158 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4159 } 4160 mFragments.moveToState(fragment); 4161 } 4162 4163 if (fragment.mView == null) { 4164 throw new IllegalStateException("Fragment " + fname 4165 + " did not create a view."); 4166 } 4167 if (id != 0) { 4168 fragment.mView.setId(id); 4169 } 4170 if (fragment.mView.getTag() == null) { 4171 fragment.mView.setTag(tag); 4172 } 4173 return fragment.mView; 4174 } 4175 4176 /** 4177 * Print the Activity's state into the given stream. This gets invoked if 4178 * you run "adb shell dumpsys activity <activity_component_name>". 4179 * 4180 * @param prefix Desired prefix to prepend at each line of output. 4181 * @param fd The raw file descriptor that the dump is being sent to. 4182 * @param writer The PrintWriter to which you should dump your state. This will be 4183 * closed for you after you return. 4184 * @param args additional arguments to the dump request. 4185 */ 4186 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4187 writer.print(prefix); writer.print("Local Activity "); 4188 writer.print(Integer.toHexString(System.identityHashCode(this))); 4189 writer.println(" State:"); 4190 String innerPrefix = prefix + " "; 4191 writer.print(innerPrefix); writer.print("mResumed="); 4192 writer.print(mResumed); writer.print(" mStopped="); 4193 writer.print(mStopped); writer.print(" mFinished="); 4194 writer.println(mFinished); 4195 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4196 writer.println(mLoadersStarted); 4197 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4198 writer.println(mChangingConfigurations); 4199 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4200 writer.println(mCurrentConfig); 4201 if (mLoaderManager != null) { 4202 writer.print(prefix); writer.print("Loader Manager "); 4203 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4204 writer.println(":"); 4205 mLoaderManager.dump(prefix + " ", fd, writer, args); 4206 } 4207 mFragments.dump(prefix, fd, writer, args); 4208 } 4209 4210 /** 4211 * Bit indicating that this activity is "immersive" and should not be 4212 * interrupted by notifications if possible. 4213 * 4214 * This value is initially set by the manifest property 4215 * <code>android:immersive</code> but may be changed at runtime by 4216 * {@link #setImmersive}. 4217 * 4218 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4219 * @hide 4220 */ 4221 public boolean isImmersive() { 4222 try { 4223 return ActivityManagerNative.getDefault().isImmersive(mToken); 4224 } catch (RemoteException e) { 4225 return false; 4226 } 4227 } 4228 4229 /** 4230 * Adjust the current immersive mode setting. 4231 * 4232 * Note that changing this value will have no effect on the activity's 4233 * {@link android.content.pm.ActivityInfo} structure; that is, if 4234 * <code>android:immersive</code> is set to <code>true</code> 4235 * in the application's manifest entry for this activity, the {@link 4236 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4237 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4238 * FLAG_IMMERSIVE} bit set. 4239 * 4240 * @see #isImmersive 4241 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4242 * @hide 4243 */ 4244 public void setImmersive(boolean i) { 4245 try { 4246 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4247 } catch (RemoteException e) { 4248 // pass 4249 } 4250 } 4251 4252 /** 4253 * Start an action mode. 4254 * 4255 * @param callback Callback that will manage lifecycle events for this context mode 4256 * @return The ContextMode that was started, or null if it was canceled 4257 * 4258 * @see ActionMode 4259 */ 4260 public ActionMode startActionMode(ActionMode.Callback callback) { 4261 return mWindow.getDecorView().startActionMode(callback); 4262 } 4263 4264 /** 4265 * Give the Activity a chance to control the UI for an action mode requested 4266 * by the system. 4267 * 4268 * <p>Note: If you are looking for a notification callback that an action mode 4269 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4270 * 4271 * @param callback The callback that should control the new action mode 4272 * @return The new action mode, or <code>null</code> if the activity does not want to 4273 * provide special handling for this action mode. (It will be handled by the system.) 4274 */ 4275 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4276 initActionBar(); 4277 if (mActionBar != null) { 4278 return mActionBar.startActionMode(callback); 4279 } 4280 return null; 4281 } 4282 4283 /** 4284 * Notifies the Activity that an action mode has been started. 4285 * Activity subclasses overriding this method should call the superclass implementation. 4286 * 4287 * @param mode The new action mode. 4288 */ 4289 public void onActionModeStarted(ActionMode mode) { 4290 } 4291 4292 /** 4293 * Notifies the activity that an action mode has finished. 4294 * Activity subclasses overriding this method should call the superclass implementation. 4295 * 4296 * @param mode The action mode that just finished. 4297 */ 4298 public void onActionModeFinished(ActionMode mode) { 4299 } 4300 4301 // ------------------ Internal API ------------------ 4302 4303 final void setParent(Activity parent) { 4304 mParent = parent; 4305 } 4306 4307 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4308 Application application, Intent intent, ActivityInfo info, CharSequence title, 4309 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4310 Configuration config) { 4311 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4312 lastNonConfigurationInstances, config); 4313 } 4314 4315 final void attach(Context context, ActivityThread aThread, 4316 Instrumentation instr, IBinder token, int ident, 4317 Application application, Intent intent, ActivityInfo info, 4318 CharSequence title, Activity parent, String id, 4319 NonConfigurationInstances lastNonConfigurationInstances, 4320 Configuration config) { 4321 attachBaseContext(context); 4322 4323 mFragments.attachActivity(this); 4324 4325 mWindow = PolicyManager.makeNewWindow(this); 4326 mWindow.setCallback(this); 4327 mWindow.getLayoutInflater().setPrivateFactory(this); 4328 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4329 mWindow.setSoftInputMode(info.softInputMode); 4330 } 4331 mUiThread = Thread.currentThread(); 4332 4333 mMainThread = aThread; 4334 mInstrumentation = instr; 4335 mToken = token; 4336 mIdent = ident; 4337 mApplication = application; 4338 mIntent = intent; 4339 mComponent = intent.getComponent(); 4340 mActivityInfo = info; 4341 mTitle = title; 4342 mParent = parent; 4343 mEmbeddedID = id; 4344 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4345 4346 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4347 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4348 if (mParent != null) { 4349 mWindow.setContainer(mParent.getWindow()); 4350 } 4351 mWindowManager = mWindow.getWindowManager(); 4352 mCurrentConfig = config; 4353 } 4354 4355 final IBinder getActivityToken() { 4356 return mParent != null ? mParent.getActivityToken() : mToken; 4357 } 4358 4359 final void performCreate(Bundle icicle) { 4360 onCreate(icicle); 4361 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4362 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4363 mFragments.dispatchActivityCreated(); 4364 } 4365 4366 final void performStart() { 4367 mFragments.noteStateNotSaved(); 4368 mCalled = false; 4369 mFragments.execPendingActions(); 4370 mInstrumentation.callActivityOnStart(this); 4371 if (!mCalled) { 4372 throw new SuperNotCalledException( 4373 "Activity " + mComponent.toShortString() + 4374 " did not call through to super.onStart()"); 4375 } 4376 mFragments.dispatchStart(); 4377 if (mAllLoaderManagers != null) { 4378 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4379 mAllLoaderManagers.valueAt(i).finishRetain(); 4380 } 4381 } 4382 } 4383 4384 final void performRestart() { 4385 mFragments.noteStateNotSaved(); 4386 4387 synchronized (mManagedCursors) { 4388 final int N = mManagedCursors.size(); 4389 for (int i=0; i<N; i++) { 4390 ManagedCursor mc = mManagedCursors.get(i); 4391 if (mc.mReleased || mc.mUpdated) { 4392 if (!mc.mCursor.requery()) { 4393 throw new IllegalStateException( 4394 "trying to requery an already closed cursor"); 4395 } 4396 mc.mReleased = false; 4397 mc.mUpdated = false; 4398 } 4399 } 4400 } 4401 4402 if (mStopped) { 4403 mStopped = false; 4404 mCalled = false; 4405 if (mToken != null && mParent == null) { 4406 WindowManagerImpl.getDefault().setStoppedState(mToken, false); 4407 } 4408 mInstrumentation.callActivityOnRestart(this); 4409 if (!mCalled) { 4410 throw new SuperNotCalledException( 4411 "Activity " + mComponent.toShortString() + 4412 " did not call through to super.onRestart()"); 4413 } 4414 performStart(); 4415 } 4416 } 4417 4418 final void performResume() { 4419 performRestart(); 4420 4421 mFragments.execPendingActions(); 4422 4423 mLastNonConfigurationInstances = null; 4424 4425 mCalled = false; 4426 // mResumed is set by the instrumentation 4427 mInstrumentation.callActivityOnResume(this); 4428 if (!mCalled) { 4429 throw new SuperNotCalledException( 4430 "Activity " + mComponent.toShortString() + 4431 " did not call through to super.onResume()"); 4432 } 4433 4434 // Now really resume, and install the current status bar and menu. 4435 mCalled = false; 4436 4437 mFragments.dispatchResume(); 4438 mFragments.execPendingActions(); 4439 4440 onPostResume(); 4441 if (!mCalled) { 4442 throw new SuperNotCalledException( 4443 "Activity " + mComponent.toShortString() + 4444 " did not call through to super.onPostResume()"); 4445 } 4446 } 4447 4448 final void performPause() { 4449 mFragments.dispatchPause(); 4450 mCalled = false; 4451 onPause(); 4452 mResumed = false; 4453 if (!mCalled && getApplicationInfo().targetSdkVersion 4454 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4455 throw new SuperNotCalledException( 4456 "Activity " + mComponent.toShortString() + 4457 " did not call through to super.onPause()"); 4458 } 4459 mResumed = false; 4460 } 4461 4462 final void performUserLeaving() { 4463 onUserInteraction(); 4464 onUserLeaveHint(); 4465 } 4466 4467 final void performStop() { 4468 if (mLoadersStarted) { 4469 mLoadersStarted = false; 4470 if (mLoaderManager != null) { 4471 if (!mChangingConfigurations) { 4472 mLoaderManager.doStop(); 4473 } else { 4474 mLoaderManager.doRetain(); 4475 } 4476 } 4477 } 4478 4479 if (!mStopped) { 4480 if (mWindow != null) { 4481 mWindow.closeAllPanels(); 4482 } 4483 4484 if (mToken != null && mParent == null) { 4485 WindowManagerImpl.getDefault().setStoppedState(mToken, true); 4486 } 4487 4488 mFragments.dispatchStop(); 4489 4490 mCalled = false; 4491 mInstrumentation.callActivityOnStop(this); 4492 if (!mCalled) { 4493 throw new SuperNotCalledException( 4494 "Activity " + mComponent.toShortString() + 4495 " did not call through to super.onStop()"); 4496 } 4497 4498 synchronized (mManagedCursors) { 4499 final int N = mManagedCursors.size(); 4500 for (int i=0; i<N; i++) { 4501 ManagedCursor mc = mManagedCursors.get(i); 4502 if (!mc.mReleased) { 4503 mc.mCursor.deactivate(); 4504 mc.mReleased = true; 4505 } 4506 } 4507 } 4508 4509 mStopped = true; 4510 } 4511 mResumed = false; 4512 4513 // Check for Activity leaks, if enabled. 4514 StrictMode.conditionallyCheckInstanceCounts(); 4515 } 4516 4517 final void performDestroy() { 4518 mWindow.destroy(); 4519 mFragments.dispatchDestroy(); 4520 onDestroy(); 4521 if (mLoaderManager != null) { 4522 mLoaderManager.doDestroy(); 4523 } 4524 } 4525 4526 /** 4527 * @hide 4528 */ 4529 public final boolean isResumed() { 4530 return mResumed; 4531 } 4532 4533 void dispatchActivityResult(String who, int requestCode, 4534 int resultCode, Intent data) { 4535 if (Config.LOGV) Log.v( 4536 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4537 + ", resCode=" + resultCode + ", data=" + data); 4538 mFragments.noteStateNotSaved(); 4539 if (who == null) { 4540 onActivityResult(requestCode, resultCode, data); 4541 } else { 4542 Fragment frag = mFragments.findFragmentByWho(who); 4543 if (frag != null) { 4544 frag.onActivityResult(requestCode, resultCode, data); 4545 } 4546 } 4547 } 4548} 4549