Activity.java revision 33bbfd2232ea9eaae9a9d87a05a95a430f09bd83
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.View.OnCreateContextMenuListener; 70import android.view.ViewGroup; 71import android.view.ViewGroup.LayoutParams; 72import android.view.ViewManager; 73import android.view.Window; 74import android.view.WindowManager; 75import android.view.accessibility.AccessibilityEvent; 76import android.widget.AdapterView; 77 78import java.io.FileDescriptor; 79import java.io.PrintWriter; 80import java.util.ArrayList; 81import java.util.HashMap; 82 83/** 84 * An activity is a single, focused thing that the user can do. Almost all 85 * activities interact with the user, so the Activity class takes care of 86 * creating a window for you in which you can place your UI with 87 * {@link #setContentView}. While activities are often presented to the user 88 * as full-screen windows, they can also be used in other ways: as floating 89 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 90 * or embedded inside of another activity (using {@link ActivityGroup}). 91 * 92 * There are two methods almost all subclasses of Activity will implement: 93 * 94 * <ul> 95 * <li> {@link #onCreate} is where you initialize your activity. Most 96 * importantly, here you will usually call {@link #setContentView(int)} 97 * with a layout resource defining your UI, and using {@link #findViewById} 98 * to retrieve the widgets in that UI that you need to interact with 99 * programmatically. 100 * 101 * <li> {@link #onPause} is where you deal with the user leaving your 102 * activity. Most importantly, any changes made by the user should at this 103 * point be committed (usually to the 104 * {@link android.content.ContentProvider} holding the data). 105 * </ul> 106 * 107 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 108 * activity classes must have a corresponding 109 * {@link android.R.styleable#AndroidManifestActivity <activity>} 110 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 111 * 112 * <p>The Activity class is an important part of an application's overall lifecycle, 113 * and the way activities are launched and put together is a fundamental 114 * part of the platform's application model. For a detailed perspective on the structure of an 115 * Android application and how activities behave, please read the 116 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 117 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 118 * documents.</p> 119 * 120 * <p>You can also find a detailed discussion about how to create activities in the 121 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 122 * document.</p> 123 * 124 * <p>Topics covered here: 125 * <ol> 126 * <li><a href="#Fragments">Fragments</a> 127 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 128 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 129 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 130 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 131 * <li><a href="#Permissions">Permissions</a> 132 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 133 * </ol> 134 * 135 * <a name="Fragments"></a> 136 * <h3>Fragments</h3> 137 * 138 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 139 * implementations can make use of the {@link Fragment} class to better 140 * modularize their code, build more sophisticated user interfaces for larger 141 * screens, and help scale their application between small and large screens. 142 * 143 * <a name="ActivityLifecycle"></a> 144 * <h3>Activity Lifecycle</h3> 145 * 146 * <p>Activities in the system are managed as an <em>activity stack</em>. 147 * When a new activity is started, it is placed on the top of the stack 148 * and becomes the running activity -- the previous activity always remains 149 * below it in the stack, and will not come to the foreground again until 150 * the new activity exits.</p> 151 * 152 * <p>An activity has essentially four states:</p> 153 * <ul> 154 * <li> If an activity in the foreground of the screen (at the top of 155 * the stack), 156 * it is <em>active</em> or <em>running</em>. </li> 157 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 158 * or transparent activity has focus on top of your activity), it 159 * is <em>paused</em>. A paused activity is completely alive (it 160 * maintains all state and member information and remains attached to 161 * the window manager), but can be killed by the system in extreme 162 * low memory situations. 163 * <li>If an activity is completely obscured by another activity, 164 * it is <em>stopped</em>. It still retains all state and member information, 165 * however, it is no longer visible to the user so its window is hidden 166 * and it will often be killed by the system when memory is needed 167 * elsewhere.</li> 168 * <li>If an activity is paused or stopped, the system can drop the activity 169 * from memory by either asking it to finish, or simply killing its 170 * process. When it is displayed again to the user, it must be 171 * completely restarted and restored to its previous state.</li> 172 * </ul> 173 * 174 * <p>The following diagram shows the important state paths of an Activity. 175 * The square rectangles represent callback methods you can implement to 176 * perform operations when the Activity moves between states. The colored 177 * ovals are major states the Activity can be in.</p> 178 * 179 * <p><img src="../../../images/activity_lifecycle.png" 180 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 181 * 182 * <p>There are three key loops you may be interested in monitoring within your 183 * activity: 184 * 185 * <ul> 186 * <li>The <b>entire lifetime</b> of an activity happens between the first call 187 * to {@link android.app.Activity#onCreate} through to a single final call 188 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 189 * of "global" state in onCreate(), and release all remaining resources in 190 * onDestroy(). For example, if it has a thread running in the background 191 * to download data from the network, it may create that thread in onCreate() 192 * and then stop the thread in onDestroy(). 193 * 194 * <li>The <b>visible lifetime</b> of an activity happens between a call to 195 * {@link android.app.Activity#onStart} until a corresponding call to 196 * {@link android.app.Activity#onStop}. During this time the user can see the 197 * activity on-screen, though it may not be in the foreground and interacting 198 * with the user. Between these two methods you can maintain resources that 199 * are needed to show the activity to the user. For example, you can register 200 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 201 * that impact your UI, and unregister it in onStop() when the user an no 202 * longer see what you are displaying. The onStart() and onStop() methods 203 * can be called multiple times, as the activity becomes visible and hidden 204 * to the user. 205 * 206 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 207 * {@link android.app.Activity#onResume} until a corresponding call to 208 * {@link android.app.Activity#onPause}. During this time the activity is 209 * in front of all other activities and interacting with the user. An activity 210 * can frequently go between the resumed and paused states -- for example when 211 * the device goes to sleep, when an activity result is delivered, when a new 212 * intent is delivered -- so the code in these methods should be fairly 213 * lightweight. 214 * </ul> 215 * 216 * <p>The entire lifecycle of an activity is defined by the following 217 * Activity methods. All of these are hooks that you can override 218 * to do appropriate work when the activity changes state. All 219 * activities will implement {@link android.app.Activity#onCreate} 220 * to do their initial setup; many will also implement 221 * {@link android.app.Activity#onPause} to commit changes to data and 222 * otherwise prepare to stop interacting with the user. You should always 223 * call up to your superclass when implementing these methods.</p> 224 * 225 * </p> 226 * <pre class="prettyprint"> 227 * public class Activity extends ApplicationContext { 228 * protected void onCreate(Bundle savedInstanceState); 229 * 230 * protected void onStart(); 231 * 232 * protected void onRestart(); 233 * 234 * protected void onResume(); 235 * 236 * protected void onPause(); 237 * 238 * protected void onStop(); 239 * 240 * protected void onDestroy(); 241 * } 242 * </pre> 243 * 244 * <p>In general the movement through an activity's lifecycle looks like 245 * this:</p> 246 * 247 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 248 * <colgroup align="left" span="3" /> 249 * <colgroup align="left" /> 250 * <colgroup align="center" /> 251 * <colgroup align="center" /> 252 * 253 * <thead> 254 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 255 * </thead> 256 * 257 * <tbody> 258 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 259 * <td>Called when the activity is first created. 260 * This is where you should do all of your normal static set up: 261 * create views, bind data to lists, etc. This method also 262 * provides you with a Bundle containing the activity's previously 263 * frozen state, if there was one. 264 * <p>Always followed by <code>onStart()</code>.</td> 265 * <td align="center">No</td> 266 * <td align="center"><code>onStart()</code></td> 267 * </tr> 268 * 269 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 270 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 271 * <td>Called after your activity has been stopped, prior to it being 272 * started again. 273 * <p>Always followed by <code>onStart()</code></td> 274 * <td align="center">No</td> 275 * <td align="center"><code>onStart()</code></td> 276 * </tr> 277 * 278 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 279 * <td>Called when the activity is becoming visible to the user. 280 * <p>Followed by <code>onResume()</code> if the activity comes 281 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 282 * <td align="center">No</td> 283 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 284 * </tr> 285 * 286 * <tr><td rowspan="2" style="border-left: none;"> </td> 287 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 288 * <td>Called when the activity will start 289 * interacting with the user. At this point your activity is at 290 * the top of the activity stack, with user input going to it. 291 * <p>Always followed by <code>onPause()</code>.</td> 292 * <td align="center">No</td> 293 * <td align="center"><code>onPause()</code></td> 294 * </tr> 295 * 296 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 297 * <td>Called when the system is about to start resuming a previous 298 * activity. This is typically used to commit unsaved changes to 299 * persistent data, stop animations and other things that may be consuming 300 * CPU, etc. Implementations of this method must be very quick because 301 * the next activity will not be resumed until this method returns. 302 * <p>Followed by either <code>onResume()</code> if the activity 303 * returns back to the front, or <code>onStop()</code> if it becomes 304 * invisible to the user.</td> 305 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 306 * <td align="center"><code>onResume()</code> or<br> 307 * <code>onStop()</code></td> 308 * </tr> 309 * 310 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 311 * <td>Called when the activity is no longer visible to the user, because 312 * another activity has been resumed and is covering this one. This 313 * may happen either because a new activity is being started, an existing 314 * one is being brought in front of this one, or this one is being 315 * destroyed. 316 * <p>Followed by either <code>onRestart()</code> if 317 * this activity is coming back to interact with the user, or 318 * <code>onDestroy()</code> if this activity is going away.</td> 319 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 320 * <td align="center"><code>onRestart()</code> or<br> 321 * <code>onDestroy()</code></td> 322 * </tr> 323 * 324 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 325 * <td>The final call you receive before your 326 * activity is destroyed. This can happen either because the 327 * activity is finishing (someone called {@link Activity#finish} on 328 * it, or because the system is temporarily destroying this 329 * instance of the activity to save space. You can distinguish 330 * between these two scenarios with the {@link 331 * Activity#isFinishing} method.</td> 332 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 333 * <td align="center"><em>nothing</em></td> 334 * </tr> 335 * </tbody> 336 * </table> 337 * 338 * <p>Note the "Killable" column in the above table -- for those methods that 339 * are marked as being killable, after that method returns the process hosting the 340 * activity may killed by the system <em>at any time</em> without another line 341 * of its code being executed. Because of this, you should use the 342 * {@link #onPause} method to write any persistent data (such as user edits) 343 * to storage. In addition, the method 344 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 345 * in such a background state, allowing you to save away any dynamic instance 346 * state in your activity into the given Bundle, to be later received in 347 * {@link #onCreate} if the activity needs to be re-created. 348 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 349 * section for more information on how the lifecycle of a process is tied 350 * to the activities it is hosting. Note that it is important to save 351 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 352 * because the latter is not part of the lifecycle callbacks, so will not 353 * be called in every situation as described in its documentation.</p> 354 * 355 * <p class="note">Be aware that these semantics will change slightly between 356 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 357 * vs. those targeting prior platforms. Starting with Honeycomb, an application 358 * is not in the killable state until its {@link #onStop} has returned. This 359 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 360 * safely called after {@link #onPause()} and allows and application to safely 361 * wait until {@link #onStop()} to save persistent state.</p> 362 * 363 * <p>For those methods that are not marked as being killable, the activity's 364 * process will not be killed by the system starting from the time the method 365 * is called and continuing after it returns. Thus an activity is in the killable 366 * state, for example, between after <code>onPause()</code> to the start of 367 * <code>onResume()</code>.</p> 368 * 369 * <a name="ConfigurationChanges"></a> 370 * <h3>Configuration Changes</h3> 371 * 372 * <p>If the configuration of the device (as defined by the 373 * {@link Configuration Resources.Configuration} class) changes, 374 * then anything displaying a user interface will need to update to match that 375 * configuration. Because Activity is the primary mechanism for interacting 376 * with the user, it includes special support for handling configuration 377 * changes.</p> 378 * 379 * <p>Unless you specify otherwise, a configuration change (such as a change 380 * in screen orientation, language, input devices, etc) will cause your 381 * current activity to be <em>destroyed</em>, going through the normal activity 382 * lifecycle process of {@link #onPause}, 383 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 384 * had been in the foreground or visible to the user, once {@link #onDestroy} is 385 * called in that instance then a new instance of the activity will be 386 * created, with whatever savedInstanceState the previous instance had generated 387 * from {@link #onSaveInstanceState}.</p> 388 * 389 * <p>This is done because any application resource, 390 * including layout files, can change based on any configuration value. Thus 391 * the only safe way to handle a configuration change is to re-retrieve all 392 * resources, including layouts, drawables, and strings. Because activities 393 * must already know how to save their state and re-create themselves from 394 * that state, this is a convenient way to have an activity restart itself 395 * with a new configuration.</p> 396 * 397 * <p>In some special cases, you may want to bypass restarting of your 398 * activity based on one or more types of configuration changes. This is 399 * done with the {@link android.R.attr#configChanges android:configChanges} 400 * attribute in its manifest. For any types of configuration changes you say 401 * that you handle there, you will receive a call to your current activity's 402 * {@link #onConfigurationChanged} method instead of being restarted. If 403 * a configuration change involves any that you do not handle, however, the 404 * activity will still be restarted and {@link #onConfigurationChanged} 405 * will not be called.</p> 406 * 407 * <a name="StartingActivities"></a> 408 * <h3>Starting Activities and Getting Results</h3> 409 * 410 * <p>The {@link android.app.Activity#startActivity} 411 * method is used to start a 412 * new activity, which will be placed at the top of the activity stack. It 413 * takes a single argument, an {@link android.content.Intent Intent}, 414 * which describes the activity 415 * to be executed.</p> 416 * 417 * <p>Sometimes you want to get a result back from an activity when it 418 * ends. For example, you may start an activity that lets the user pick 419 * a person in a list of contacts; when it ends, it returns the person 420 * that was selected. To do this, you call the 421 * {@link android.app.Activity#startActivityForResult(Intent, int)} 422 * version with a second integer parameter identifying the call. The result 423 * will come back through your {@link android.app.Activity#onActivityResult} 424 * method.</p> 425 * 426 * <p>When an activity exits, it can call 427 * {@link android.app.Activity#setResult(int)} 428 * to return data back to its parent. It must always supply a result code, 429 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 430 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 431 * return back an Intent containing any additional data it wants. All of this 432 * information appears back on the 433 * parent's <code>Activity.onActivityResult()</code>, along with the integer 434 * identifier it originally supplied.</p> 435 * 436 * <p>If a child activity fails for any reason (such as crashing), the parent 437 * activity will receive a result with the code RESULT_CANCELED.</p> 438 * 439 * <pre class="prettyprint"> 440 * public class MyActivity extends Activity { 441 * ... 442 * 443 * static final int PICK_CONTACT_REQUEST = 0; 444 * 445 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 446 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 447 * // When the user center presses, let them pick a contact. 448 * startActivityForResult( 449 * new Intent(Intent.ACTION_PICK, 450 * new Uri("content://contacts")), 451 * PICK_CONTACT_REQUEST); 452 * return true; 453 * } 454 * return false; 455 * } 456 * 457 * protected void onActivityResult(int requestCode, int resultCode, 458 * Intent data) { 459 * if (requestCode == PICK_CONTACT_REQUEST) { 460 * if (resultCode == RESULT_OK) { 461 * // A contact was picked. Here we will just display it 462 * // to the user. 463 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 464 * } 465 * } 466 * } 467 * } 468 * </pre> 469 * 470 * <a name="SavingPersistentState"></a> 471 * <h3>Saving Persistent State</h3> 472 * 473 * <p>There are generally two kinds of persistent state than an activity 474 * will deal with: shared document-like data (typically stored in a SQLite 475 * database using a {@linkplain android.content.ContentProvider content provider}) 476 * and internal state such as user preferences.</p> 477 * 478 * <p>For content provider data, we suggest that activities use a 479 * "edit in place" user model. That is, any edits a user makes are effectively 480 * made immediately without requiring an additional confirmation step. 481 * Supporting this model is generally a simple matter of following two rules:</p> 482 * 483 * <ul> 484 * <li> <p>When creating a new document, the backing database entry or file for 485 * it is created immediately. For example, if the user chooses to write 486 * a new e-mail, a new entry for that e-mail is created as soon as they 487 * start entering data, so that if they go to any other activity after 488 * that point this e-mail will now appear in the list of drafts.</p> 489 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 490 * commit to the backing content provider or file any changes the user 491 * has made. This ensures that those changes will be seen by any other 492 * activity that is about to run. You will probably want to commit 493 * your data even more aggressively at key times during your 494 * activity's lifecycle: for example before starting a new 495 * activity, before finishing your own activity, when the user 496 * switches between input fields, etc.</p> 497 * </ul> 498 * 499 * <p>This model is designed to prevent data loss when a user is navigating 500 * between activities, and allows the system to safely kill an activity (because 501 * system resources are needed somewhere else) at any time after it has been 502 * paused. Note this implies 503 * that the user pressing BACK from your activity does <em>not</em> 504 * mean "cancel" -- it means to leave the activity with its current contents 505 * saved away. Canceling edits in an activity must be provided through 506 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 507 * 508 * <p>See the {@linkplain android.content.ContentProvider content package} for 509 * more information about content providers. These are a key aspect of how 510 * different activities invoke and propagate data between themselves.</p> 511 * 512 * <p>The Activity class also provides an API for managing internal persistent state 513 * associated with an activity. This can be used, for example, to remember 514 * the user's preferred initial display in a calendar (day view or week view) 515 * or the user's default home page in a web browser.</p> 516 * 517 * <p>Activity persistent state is managed 518 * with the method {@link #getPreferences}, 519 * allowing you to retrieve and 520 * modify a set of name/value pairs associated with the activity. To use 521 * preferences that are shared across multiple application components 522 * (activities, receivers, services, providers), you can use the underlying 523 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 524 * to retrieve a preferences 525 * object stored under a specific name. 526 * (Note that it is not possible to share settings data across application 527 * packages -- for that you will need a content provider.)</p> 528 * 529 * <p>Here is an excerpt from a calendar activity that stores the user's 530 * preferred view mode in its persistent settings:</p> 531 * 532 * <pre class="prettyprint"> 533 * public class CalendarActivity extends Activity { 534 * ... 535 * 536 * static final int DAY_VIEW_MODE = 0; 537 * static final int WEEK_VIEW_MODE = 1; 538 * 539 * private SharedPreferences mPrefs; 540 * private int mCurViewMode; 541 * 542 * protected void onCreate(Bundle savedInstanceState) { 543 * super.onCreate(savedInstanceState); 544 * 545 * SharedPreferences mPrefs = getSharedPreferences(); 546 * mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE); 547 * } 548 * 549 * protected void onPause() { 550 * super.onPause(); 551 * 552 * SharedPreferences.Editor ed = mPrefs.edit(); 553 * ed.putInt("view_mode", mCurViewMode); 554 * ed.commit(); 555 * } 556 * } 557 * </pre> 558 * 559 * <a name="Permissions"></a> 560 * <h3>Permissions</h3> 561 * 562 * <p>The ability to start a particular Activity can be enforced when it is 563 * declared in its 564 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 565 * tag. By doing so, other applications will need to declare a corresponding 566 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 567 * element in their own manifest to be able to start that activity. 568 * 569 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 570 * document for more information on permissions and security in general. 571 * 572 * <a name="ProcessLifecycle"></a> 573 * <h3>Process Lifecycle</h3> 574 * 575 * <p>The Android system attempts to keep application process around for as 576 * long as possible, but eventually will need to remove old processes when 577 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 578 * Lifecycle</a>, the decision about which process to remove is intimately 579 * tied to the state of the user's interaction with it. In general, there 580 * are four states a process can be in based on the activities running in it, 581 * listed here in order of importance. The system will kill less important 582 * processes (the last ones) before it resorts to killing more important 583 * processes (the first ones). 584 * 585 * <ol> 586 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 587 * that the user is currently interacting with) is considered the most important. 588 * Its process will only be killed as a last resort, if it uses more memory 589 * than is available on the device. Generally at this point the device has 590 * reached a memory paging state, so this is required in order to keep the user 591 * interface responsive. 592 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 593 * but not in the foreground, such as one sitting behind a foreground dialog) 594 * is considered extremely important and will not be killed unless that is 595 * required to keep the foreground activity running. 596 * <li> <p>A <b>background activity</b> (an activity that is not visible to 597 * the user and has been paused) is no longer critical, so the system may 598 * safely kill its process to reclaim memory for other foreground or 599 * visible processes. If its process needs to be killed, when the user navigates 600 * back to the activity (making it visible on the screen again), its 601 * {@link #onCreate} method will be called with the savedInstanceState it had previously 602 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 603 * state as the user last left it. 604 * <li> <p>An <b>empty process</b> is one hosting no activities or other 605 * application components (such as {@link Service} or 606 * {@link android.content.BroadcastReceiver} classes). These are killed very 607 * quickly by the system as memory becomes low. For this reason, any 608 * background operation you do outside of an activity must be executed in the 609 * context of an activity BroadcastReceiver or Service to ensure that the system 610 * knows it needs to keep your process around. 611 * </ol> 612 * 613 * <p>Sometimes an Activity may need to do a long-running operation that exists 614 * independently of the activity lifecycle itself. An example may be a camera 615 * application that allows you to upload a picture to a web site. The upload 616 * may take a long time, and the application should allow the user to leave 617 * the application will it is executing. To accomplish this, your Activity 618 * should start a {@link Service} in which the upload takes place. This allows 619 * the system to properly prioritize your process (considering it to be more 620 * important than other non-visible applications) for the duration of the 621 * upload, independent of whether the original activity is paused, stopped, 622 * or finished. 623 */ 624public class Activity extends ContextThemeWrapper 625 implements LayoutInflater.Factory2, 626 Window.Callback, KeyEvent.Callback, 627 OnCreateContextMenuListener, ComponentCallbacks { 628 private static final String TAG = "Activity"; 629 630 /** Standard activity result: operation canceled. */ 631 public static final int RESULT_CANCELED = 0; 632 /** Standard activity result: operation succeeded. */ 633 public static final int RESULT_OK = -1; 634 /** Start of user-defined activity results. */ 635 public static final int RESULT_FIRST_USER = 1; 636 637 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 638 private static final String FRAGMENTS_TAG = "android:fragments"; 639 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 640 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 641 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 642 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 643 644 private static class ManagedDialog { 645 Dialog mDialog; 646 Bundle mArgs; 647 } 648 private SparseArray<ManagedDialog> mManagedDialogs; 649 650 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 651 private Instrumentation mInstrumentation; 652 private IBinder mToken; 653 private int mIdent; 654 /*package*/ String mEmbeddedID; 655 private Application mApplication; 656 /*package*/ Intent mIntent; 657 private ComponentName mComponent; 658 /*package*/ ActivityInfo mActivityInfo; 659 /*package*/ ActivityThread mMainThread; 660 Activity mParent; 661 boolean mCalled; 662 boolean mCheckedForLoaderManager; 663 boolean mLoadersStarted; 664 /*package*/ boolean mResumed; 665 private boolean mStopped; 666 boolean mFinished; 667 boolean mStartedActivity; 668 /** true if the activity is going through a transient pause */ 669 /*package*/ boolean mTemporaryPause = false; 670 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 671 /*package*/ boolean mChangingConfigurations = false; 672 /*package*/ int mConfigChangeFlags; 673 /*package*/ Configuration mCurrentConfig; 674 private SearchManager mSearchManager; 675 676 static final class NonConfigurationInstances { 677 Object activity; 678 HashMap<String, Object> children; 679 ArrayList<Fragment> fragments; 680 SparseArray<LoaderManagerImpl> loaders; 681 } 682 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 683 684 private Window mWindow; 685 686 private WindowManager mWindowManager; 687 /*package*/ View mDecor = null; 688 /*package*/ boolean mWindowAdded = false; 689 /*package*/ boolean mVisibleFromServer = false; 690 /*package*/ boolean mVisibleFromClient = true; 691 /*package*/ ActionBarImpl mActionBar = null; 692 693 private CharSequence mTitle; 694 private int mTitleColor = 0; 695 696 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 697 698 SparseArray<LoaderManagerImpl> mAllLoaderManagers; 699 LoaderManagerImpl mLoaderManager; 700 701 private static final class ManagedCursor { 702 ManagedCursor(Cursor cursor) { 703 mCursor = cursor; 704 mReleased = false; 705 mUpdated = false; 706 } 707 708 private final Cursor mCursor; 709 private boolean mReleased; 710 private boolean mUpdated; 711 } 712 private final ArrayList<ManagedCursor> mManagedCursors = 713 new ArrayList<ManagedCursor>(); 714 715 // protected by synchronized (this) 716 int mResultCode = RESULT_CANCELED; 717 Intent mResultData = null; 718 719 private boolean mTitleReady = false; 720 721 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 722 private SpannableStringBuilder mDefaultKeySsb = null; 723 724 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 725 726 private Thread mUiThread; 727 final Handler mHandler = new Handler(); 728 729 /** Return the intent that started this activity. */ 730 public Intent getIntent() { 731 return mIntent; 732 } 733 734 /** 735 * Change the intent returned by {@link #getIntent}. This holds a 736 * reference to the given intent; it does not copy it. Often used in 737 * conjunction with {@link #onNewIntent}. 738 * 739 * @param newIntent The new Intent object to return from getIntent 740 * 741 * @see #getIntent 742 * @see #onNewIntent 743 */ 744 public void setIntent(Intent newIntent) { 745 mIntent = newIntent; 746 } 747 748 /** Return the application that owns this activity. */ 749 public final Application getApplication() { 750 return mApplication; 751 } 752 753 /** Is this activity embedded inside of another activity? */ 754 public final boolean isChild() { 755 return mParent != null; 756 } 757 758 /** Return the parent activity if this view is an embedded child. */ 759 public final Activity getParent() { 760 return mParent; 761 } 762 763 /** Retrieve the window manager for showing custom windows. */ 764 public WindowManager getWindowManager() { 765 return mWindowManager; 766 } 767 768 /** 769 * Retrieve the current {@link android.view.Window} for the activity. 770 * This can be used to directly access parts of the Window API that 771 * are not available through Activity/Screen. 772 * 773 * @return Window The current window, or null if the activity is not 774 * visual. 775 */ 776 public Window getWindow() { 777 return mWindow; 778 } 779 780 /** 781 * Return the LoaderManager for this fragment, creating it if needed. 782 */ 783 public LoaderManager getLoaderManager() { 784 if (mLoaderManager != null) { 785 return mLoaderManager; 786 } 787 mCheckedForLoaderManager = true; 788 mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); 789 return mLoaderManager; 790 } 791 792 LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { 793 if (mAllLoaderManagers == null) { 794 mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); 795 } 796 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 797 if (lm == null) { 798 if (create) { 799 lm = new LoaderManagerImpl(this, started); 800 mAllLoaderManagers.put(index, lm); 801 } 802 } else { 803 lm.updateActivity(this); 804 } 805 return lm; 806 } 807 808 /** 809 * Calls {@link android.view.Window#getCurrentFocus} on the 810 * Window of this Activity to return the currently focused view. 811 * 812 * @return View The current View with focus or null. 813 * 814 * @see #getWindow 815 * @see android.view.Window#getCurrentFocus 816 */ 817 public View getCurrentFocus() { 818 return mWindow != null ? mWindow.getCurrentFocus() : null; 819 } 820 821 @Override 822 public int getWallpaperDesiredMinimumWidth() { 823 int width = super.getWallpaperDesiredMinimumWidth(); 824 return width <= 0 ? getWindowManager().getDefaultDisplay().getWidth() : width; 825 } 826 827 @Override 828 public int getWallpaperDesiredMinimumHeight() { 829 int height = super.getWallpaperDesiredMinimumHeight(); 830 return height <= 0 ? getWindowManager().getDefaultDisplay().getHeight() : height; 831 } 832 833 /** 834 * Called when the activity is starting. This is where most initialization 835 * should go: calling {@link #setContentView(int)} to inflate the 836 * activity's UI, using {@link #findViewById} to programmatically interact 837 * with widgets in the UI, calling 838 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 839 * cursors for data being displayed, etc. 840 * 841 * <p>You can call {@link #finish} from within this function, in 842 * which case onDestroy() will be immediately called without any of the rest 843 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 844 * {@link #onPause}, etc) executing. 845 * 846 * <p><em>Derived classes must call through to the super class's 847 * implementation of this method. If they do not, an exception will be 848 * thrown.</em></p> 849 * 850 * @param savedInstanceState If the activity is being re-initialized after 851 * previously being shut down then this Bundle contains the data it most 852 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 853 * 854 * @see #onStart 855 * @see #onSaveInstanceState 856 * @see #onRestoreInstanceState 857 * @see #onPostCreate 858 */ 859 protected void onCreate(Bundle savedInstanceState) { 860 if (mLastNonConfigurationInstances != null) { 861 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 862 } 863 if (savedInstanceState != null) { 864 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 865 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 866 ? mLastNonConfigurationInstances.fragments : null); 867 } 868 mFragments.dispatchCreate(); 869 mCalled = true; 870 } 871 872 /** 873 * The hook for {@link ActivityThread} to restore the state of this activity. 874 * 875 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 876 * {@link #restoreManagedDialogs(android.os.Bundle)}. 877 * 878 * @param savedInstanceState contains the saved state 879 */ 880 final void performRestoreInstanceState(Bundle savedInstanceState) { 881 onRestoreInstanceState(savedInstanceState); 882 restoreManagedDialogs(savedInstanceState); 883 } 884 885 /** 886 * This method is called after {@link #onStart} when the activity is 887 * being re-initialized from a previously saved state, given here in 888 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 889 * to restore their state, but it is sometimes convenient to do it here 890 * after all of the initialization has been done or to allow subclasses to 891 * decide whether to use your default implementation. The default 892 * implementation of this method performs a restore of any view state that 893 * had previously been frozen by {@link #onSaveInstanceState}. 894 * 895 * <p>This method is called between {@link #onStart} and 896 * {@link #onPostCreate}. 897 * 898 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 899 * 900 * @see #onCreate 901 * @see #onPostCreate 902 * @see #onResume 903 * @see #onSaveInstanceState 904 */ 905 protected void onRestoreInstanceState(Bundle savedInstanceState) { 906 if (mWindow != null) { 907 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 908 if (windowState != null) { 909 mWindow.restoreHierarchyState(windowState); 910 } 911 } 912 } 913 914 /** 915 * Restore the state of any saved managed dialogs. 916 * 917 * @param savedInstanceState The bundle to restore from. 918 */ 919 private void restoreManagedDialogs(Bundle savedInstanceState) { 920 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 921 if (b == null) { 922 return; 923 } 924 925 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 926 final int numDialogs = ids.length; 927 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 928 for (int i = 0; i < numDialogs; i++) { 929 final Integer dialogId = ids[i]; 930 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 931 if (dialogState != null) { 932 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 933 // so tell createDialog() not to do it, otherwise we get an exception 934 final ManagedDialog md = new ManagedDialog(); 935 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 936 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 937 if (md.mDialog != null) { 938 mManagedDialogs.put(dialogId, md); 939 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 940 md.mDialog.onRestoreInstanceState(dialogState); 941 } 942 } 943 } 944 } 945 946 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 947 final Dialog dialog = onCreateDialog(dialogId, args); 948 if (dialog == null) { 949 return null; 950 } 951 dialog.dispatchOnCreate(state); 952 return dialog; 953 } 954 955 private static String savedDialogKeyFor(int key) { 956 return SAVED_DIALOG_KEY_PREFIX + key; 957 } 958 959 private static String savedDialogArgsKeyFor(int key) { 960 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 961 } 962 963 /** 964 * Called when activity start-up is complete (after {@link #onStart} 965 * and {@link #onRestoreInstanceState} have been called). Applications will 966 * generally not implement this method; it is intended for system 967 * classes to do final initialization after application code has run. 968 * 969 * <p><em>Derived classes must call through to the super class's 970 * implementation of this method. If they do not, an exception will be 971 * thrown.</em></p> 972 * 973 * @param savedInstanceState If the activity is being re-initialized after 974 * previously being shut down then this Bundle contains the data it most 975 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 976 * @see #onCreate 977 */ 978 protected void onPostCreate(Bundle savedInstanceState) { 979 if (!isChild()) { 980 mTitleReady = true; 981 onTitleChanged(getTitle(), getTitleColor()); 982 } 983 mCalled = true; 984 } 985 986 /** 987 * Called after {@link #onCreate} — or after {@link #onRestart} when 988 * the activity had been stopped, but is now again being displayed to the 989 * user. It will be followed by {@link #onResume}. 990 * 991 * <p><em>Derived classes must call through to the super class's 992 * implementation of this method. If they do not, an exception will be 993 * thrown.</em></p> 994 * 995 * @see #onCreate 996 * @see #onStop 997 * @see #onResume 998 */ 999 protected void onStart() { 1000 mCalled = true; 1001 1002 if (!mLoadersStarted) { 1003 mLoadersStarted = true; 1004 if (mLoaderManager != null) { 1005 mLoaderManager.doStart(); 1006 } else if (!mCheckedForLoaderManager) { 1007 mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); 1008 } 1009 mCheckedForLoaderManager = true; 1010 } 1011 } 1012 1013 /** 1014 * Called after {@link #onStop} when the current activity is being 1015 * re-displayed to the user (the user has navigated back to it). It will 1016 * be followed by {@link #onStart} and then {@link #onResume}. 1017 * 1018 * <p>For activities that are using raw {@link Cursor} objects (instead of 1019 * creating them through 1020 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1021 * this is usually the place 1022 * where the cursor should be requeried (because you had deactivated it in 1023 * {@link #onStop}. 1024 * 1025 * <p><em>Derived classes must call through to the super class's 1026 * implementation of this method. If they do not, an exception will be 1027 * thrown.</em></p> 1028 * 1029 * @see #onStop 1030 * @see #onStart 1031 * @see #onResume 1032 */ 1033 protected void onRestart() { 1034 mCalled = true; 1035 } 1036 1037 /** 1038 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1039 * {@link #onPause}, for your activity to start interacting with the user. 1040 * This is a good place to begin animations, open exclusive-access devices 1041 * (such as the camera), etc. 1042 * 1043 * <p>Keep in mind that onResume is not the best indicator that your activity 1044 * is visible to the user; a system window such as the keyguard may be in 1045 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1046 * activity is visible to the user (for example, to resume a game). 1047 * 1048 * <p><em>Derived classes must call through to the super class's 1049 * implementation of this method. If they do not, an exception will be 1050 * thrown.</em></p> 1051 * 1052 * @see #onRestoreInstanceState 1053 * @see #onRestart 1054 * @see #onPostResume 1055 * @see #onPause 1056 */ 1057 protected void onResume() { 1058 mCalled = true; 1059 } 1060 1061 /** 1062 * Called when activity resume is complete (after {@link #onResume} has 1063 * been called). Applications will generally not implement this method; 1064 * it is intended for system classes to do final setup after application 1065 * resume code has run. 1066 * 1067 * <p><em>Derived classes must call through to the super class's 1068 * implementation of this method. If they do not, an exception will be 1069 * thrown.</em></p> 1070 * 1071 * @see #onResume 1072 */ 1073 protected void onPostResume() { 1074 final Window win = getWindow(); 1075 if (win != null) win.makeActive(); 1076 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1077 mCalled = true; 1078 } 1079 1080 /** 1081 * This is called for activities that set launchMode to "singleTop" in 1082 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1083 * flag when calling {@link #startActivity}. In either case, when the 1084 * activity is re-launched while at the top of the activity stack instead 1085 * of a new instance of the activity being started, onNewIntent() will be 1086 * called on the existing instance with the Intent that was used to 1087 * re-launch it. 1088 * 1089 * <p>An activity will always be paused before receiving a new intent, so 1090 * you can count on {@link #onResume} being called after this method. 1091 * 1092 * <p>Note that {@link #getIntent} still returns the original Intent. You 1093 * can use {@link #setIntent} to update it to this new Intent. 1094 * 1095 * @param intent The new intent that was started for the activity. 1096 * 1097 * @see #getIntent 1098 * @see #setIntent 1099 * @see #onResume 1100 */ 1101 protected void onNewIntent(Intent intent) { 1102 } 1103 1104 /** 1105 * The hook for {@link ActivityThread} to save the state of this activity. 1106 * 1107 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1108 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1109 * 1110 * @param outState The bundle to save the state to. 1111 */ 1112 final void performSaveInstanceState(Bundle outState) { 1113 onSaveInstanceState(outState); 1114 saveManagedDialogs(outState); 1115 } 1116 1117 /** 1118 * Called to retrieve per-instance state from an activity before being killed 1119 * so that the state can be restored in {@link #onCreate} or 1120 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1121 * will be passed to both). 1122 * 1123 * <p>This method is called before an activity may be killed so that when it 1124 * comes back some time in the future it can restore its state. For example, 1125 * if activity B is launched in front of activity A, and at some point activity 1126 * A is killed to reclaim resources, activity A will have a chance to save the 1127 * current state of its user interface via this method so that when the user 1128 * returns to activity A, the state of the user interface can be restored 1129 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1130 * 1131 * <p>Do not confuse this method with activity lifecycle callbacks such as 1132 * {@link #onPause}, which is always called when an activity is being placed 1133 * in the background or on its way to destruction, or {@link #onStop} which 1134 * is called before destruction. One example of when {@link #onPause} and 1135 * {@link #onStop} is called and not this method is when a user navigates back 1136 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1137 * on B because that particular instance will never be restored, so the 1138 * system avoids calling it. An example when {@link #onPause} is called and 1139 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1140 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1141 * killed during the lifetime of B since the state of the user interface of 1142 * A will stay intact. 1143 * 1144 * <p>The default implementation takes care of most of the UI per-instance 1145 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1146 * view in the hierarchy that has an id, and by saving the id of the currently 1147 * focused view (all of which is restored by the default implementation of 1148 * {@link #onRestoreInstanceState}). If you override this method to save additional 1149 * information not captured by each individual view, you will likely want to 1150 * call through to the default implementation, otherwise be prepared to save 1151 * all of the state of each view yourself. 1152 * 1153 * <p>If called, this method will occur before {@link #onStop}. There are 1154 * no guarantees about whether it will occur before or after {@link #onPause}. 1155 * 1156 * @param outState Bundle in which to place your saved state. 1157 * 1158 * @see #onCreate 1159 * @see #onRestoreInstanceState 1160 * @see #onPause 1161 */ 1162 protected void onSaveInstanceState(Bundle outState) { 1163 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1164 Parcelable p = mFragments.saveAllState(); 1165 if (p != null) { 1166 outState.putParcelable(FRAGMENTS_TAG, p); 1167 } 1168 } 1169 1170 /** 1171 * Save the state of any managed dialogs. 1172 * 1173 * @param outState place to store the saved state. 1174 */ 1175 private void saveManagedDialogs(Bundle outState) { 1176 if (mManagedDialogs == null) { 1177 return; 1178 } 1179 1180 final int numDialogs = mManagedDialogs.size(); 1181 if (numDialogs == 0) { 1182 return; 1183 } 1184 1185 Bundle dialogState = new Bundle(); 1186 1187 int[] ids = new int[mManagedDialogs.size()]; 1188 1189 // save each dialog's bundle, gather the ids 1190 for (int i = 0; i < numDialogs; i++) { 1191 final int key = mManagedDialogs.keyAt(i); 1192 ids[i] = key; 1193 final ManagedDialog md = mManagedDialogs.valueAt(i); 1194 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1195 if (md.mArgs != null) { 1196 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1197 } 1198 } 1199 1200 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1201 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1202 } 1203 1204 1205 /** 1206 * Called as part of the activity lifecycle when an activity is going into 1207 * the background, but has not (yet) been killed. The counterpart to 1208 * {@link #onResume}. 1209 * 1210 * <p>When activity B is launched in front of activity A, this callback will 1211 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1212 * so be sure to not do anything lengthy here. 1213 * 1214 * <p>This callback is mostly used for saving any persistent state the 1215 * activity is editing, to present a "edit in place" model to the user and 1216 * making sure nothing is lost if there are not enough resources to start 1217 * the new activity without first killing this one. This is also a good 1218 * place to do things like stop animations and other things that consume a 1219 * noticeable mount of CPU in order to make the switch to the next activity 1220 * as fast as possible, or to close resources that are exclusive access 1221 * such as the camera. 1222 * 1223 * <p>In situations where the system needs more memory it may kill paused 1224 * processes to reclaim resources. Because of this, you should be sure 1225 * that all of your state is saved by the time you return from 1226 * this function. In general {@link #onSaveInstanceState} is used to save 1227 * per-instance state in the activity and this method is used to store 1228 * global persistent data (in content providers, files, etc.) 1229 * 1230 * <p>After receiving this call you will usually receive a following call 1231 * to {@link #onStop} (after the next activity has been resumed and 1232 * displayed), however in some cases there will be a direct call back to 1233 * {@link #onResume} without going through the stopped state. 1234 * 1235 * <p><em>Derived classes must call through to the super class's 1236 * implementation of this method. If they do not, an exception will be 1237 * thrown.</em></p> 1238 * 1239 * @see #onResume 1240 * @see #onSaveInstanceState 1241 * @see #onStop 1242 */ 1243 protected void onPause() { 1244 mCalled = true; 1245 } 1246 1247 /** 1248 * Called as part of the activity lifecycle when an activity is about to go 1249 * into the background as the result of user choice. For example, when the 1250 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1251 * when an incoming phone call causes the in-call Activity to be automatically 1252 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1253 * the activity being interrupted. In cases when it is invoked, this method 1254 * is called right before the activity's {@link #onPause} callback. 1255 * 1256 * <p>This callback and {@link #onUserInteraction} are intended to help 1257 * activities manage status bar notifications intelligently; specifically, 1258 * for helping activities determine the proper time to cancel a notfication. 1259 * 1260 * @see #onUserInteraction() 1261 */ 1262 protected void onUserLeaveHint() { 1263 } 1264 1265 /** 1266 * Generate a new thumbnail for this activity. This method is called before 1267 * pausing the activity, and should draw into <var>outBitmap</var> the 1268 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1269 * can use the given <var>canvas</var>, which is configured to draw into the 1270 * bitmap, for rendering if desired. 1271 * 1272 * <p>The default implementation returns fails and does not draw a thumbnail; 1273 * this will result in the platform creating its own thumbnail if needed. 1274 * 1275 * @param outBitmap The bitmap to contain the thumbnail. 1276 * @param canvas Can be used to render into the bitmap. 1277 * 1278 * @return Return true if you have drawn into the bitmap; otherwise after 1279 * you return it will be filled with a default thumbnail. 1280 * 1281 * @see #onCreateDescription 1282 * @see #onSaveInstanceState 1283 * @see #onPause 1284 */ 1285 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1286 return false; 1287 } 1288 1289 /** 1290 * Generate a new description for this activity. This method is called 1291 * before pausing the activity and can, if desired, return some textual 1292 * description of its current state to be displayed to the user. 1293 * 1294 * <p>The default implementation returns null, which will cause you to 1295 * inherit the description from the previous activity. If all activities 1296 * return null, generally the label of the top activity will be used as the 1297 * description. 1298 * 1299 * @return A description of what the user is doing. It should be short and 1300 * sweet (only a few words). 1301 * 1302 * @see #onCreateThumbnail 1303 * @see #onSaveInstanceState 1304 * @see #onPause 1305 */ 1306 public CharSequence onCreateDescription() { 1307 return null; 1308 } 1309 1310 /** 1311 * Called when you are no longer visible to the user. You will next 1312 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1313 * depending on later user activity. 1314 * 1315 * <p>Note that this method may never be called, in low memory situations 1316 * where the system does not have enough memory to keep your activity's 1317 * process running after its {@link #onPause} method is called. 1318 * 1319 * <p><em>Derived classes must call through to the super class's 1320 * implementation of this method. If they do not, an exception will be 1321 * thrown.</em></p> 1322 * 1323 * @see #onRestart 1324 * @see #onResume 1325 * @see #onSaveInstanceState 1326 * @see #onDestroy 1327 */ 1328 protected void onStop() { 1329 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1330 mCalled = true; 1331 } 1332 1333 /** 1334 * Perform any final cleanup before an activity is destroyed. This can 1335 * happen either because the activity is finishing (someone called 1336 * {@link #finish} on it, or because the system is temporarily destroying 1337 * this instance of the activity to save space. You can distinguish 1338 * between these two scenarios with the {@link #isFinishing} method. 1339 * 1340 * <p><em>Note: do not count on this method being called as a place for 1341 * saving data! For example, if an activity is editing data in a content 1342 * provider, those edits should be committed in either {@link #onPause} or 1343 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1344 * free resources like threads that are associated with an activity, so 1345 * that a destroyed activity does not leave such things around while the 1346 * rest of its application is still running. There are situations where 1347 * the system will simply kill the activity's hosting process without 1348 * calling this method (or any others) in it, so it should not be used to 1349 * do things that are intended to remain around after the process goes 1350 * away. 1351 * 1352 * <p><em>Derived classes must call through to the super class's 1353 * implementation of this method. If they do not, an exception will be 1354 * thrown.</em></p> 1355 * 1356 * @see #onPause 1357 * @see #onStop 1358 * @see #finish 1359 * @see #isFinishing 1360 */ 1361 protected void onDestroy() { 1362 mCalled = true; 1363 1364 // dismiss any dialogs we are managing. 1365 if (mManagedDialogs != null) { 1366 final int numDialogs = mManagedDialogs.size(); 1367 for (int i = 0; i < numDialogs; i++) { 1368 final ManagedDialog md = mManagedDialogs.valueAt(i); 1369 if (md.mDialog.isShowing()) { 1370 md.mDialog.dismiss(); 1371 } 1372 } 1373 mManagedDialogs = null; 1374 } 1375 1376 // close any cursors we are managing. 1377 synchronized (mManagedCursors) { 1378 int numCursors = mManagedCursors.size(); 1379 for (int i = 0; i < numCursors; i++) { 1380 ManagedCursor c = mManagedCursors.get(i); 1381 if (c != null) { 1382 c.mCursor.close(); 1383 } 1384 } 1385 mManagedCursors.clear(); 1386 } 1387 1388 // Close any open search dialog 1389 if (mSearchManager != null) { 1390 mSearchManager.stopSearch(); 1391 } 1392 } 1393 1394 /** 1395 * Called by the system when the device configuration changes while your 1396 * activity is running. Note that this will <em>only</em> be called if 1397 * you have selected configurations you would like to handle with the 1398 * {@link android.R.attr#configChanges} attribute in your manifest. If 1399 * any configuration change occurs that is not selected to be reported 1400 * by that attribute, then instead of reporting it the system will stop 1401 * and restart the activity (to have it launched with the new 1402 * configuration). 1403 * 1404 * <p>At the time that this function has been called, your Resources 1405 * object will have been updated to return resource values matching the 1406 * new configuration. 1407 * 1408 * @param newConfig The new device configuration. 1409 */ 1410 public void onConfigurationChanged(Configuration newConfig) { 1411 mCalled = true; 1412 1413 mFragments.dispatchConfigurationChanged(newConfig); 1414 1415 if (mWindow != null) { 1416 // Pass the configuration changed event to the window 1417 mWindow.onConfigurationChanged(newConfig); 1418 } 1419 } 1420 1421 /** 1422 * If this activity is being destroyed because it can not handle a 1423 * configuration parameter being changed (and thus its 1424 * {@link #onConfigurationChanged(Configuration)} method is 1425 * <em>not</em> being called), then you can use this method to discover 1426 * the set of changes that have occurred while in the process of being 1427 * destroyed. Note that there is no guarantee that these will be 1428 * accurate (other changes could have happened at any time), so you should 1429 * only use this as an optimization hint. 1430 * 1431 * @return Returns a bit field of the configuration parameters that are 1432 * changing, as defined by the {@link android.content.res.Configuration} 1433 * class. 1434 */ 1435 public int getChangingConfigurations() { 1436 return mConfigChangeFlags; 1437 } 1438 1439 /** 1440 * Retrieve the non-configuration instance data that was previously 1441 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1442 * be available from the initial {@link #onCreate} and 1443 * {@link #onStart} calls to the new instance, allowing you to extract 1444 * any useful dynamic state from the previous instance. 1445 * 1446 * <p>Note that the data you retrieve here should <em>only</em> be used 1447 * as an optimization for handling configuration changes. You should always 1448 * be able to handle getting a null pointer back, and an activity must 1449 * still be able to restore itself to its previous state (through the 1450 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1451 * function returns null. 1452 * 1453 * @return Returns the object previously returned by 1454 * {@link #onRetainNonConfigurationInstance()}. 1455 */ 1456 public Object getLastNonConfigurationInstance() { 1457 return mLastNonConfigurationInstances != null 1458 ? mLastNonConfigurationInstances.activity : null; 1459 } 1460 1461 /** 1462 * Called by the system, as part of destroying an 1463 * activity due to a configuration change, when it is known that a new 1464 * instance will immediately be created for the new configuration. You 1465 * can return any object you like here, including the activity instance 1466 * itself, which can later be retrieved by calling 1467 * {@link #getLastNonConfigurationInstance()} in the new activity 1468 * instance. 1469 * 1470 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1471 * or later, consider instead using a {@link Fragment} with 1472 * {@link Fragment#setRetainInstance(boolean) 1473 * Fragment.setRetainInstance(boolean}.</em> 1474 * 1475 * <p>This function is called purely as an optimization, and you must 1476 * not rely on it being called. When it is called, a number of guarantees 1477 * will be made to help optimize configuration switching: 1478 * <ul> 1479 * <li> The function will be called between {@link #onStop} and 1480 * {@link #onDestroy}. 1481 * <li> A new instance of the activity will <em>always</em> be immediately 1482 * created after this one's {@link #onDestroy()} is called. In particular, 1483 * <em>no</em> messages will be dispatched during this time (when the returned 1484 * object does not have an activity to be associated with). 1485 * <li> The object you return here will <em>always</em> be available from 1486 * the {@link #getLastNonConfigurationInstance()} method of the following 1487 * activity instance as described there. 1488 * </ul> 1489 * 1490 * <p>These guarantees are designed so that an activity can use this API 1491 * to propagate extensive state from the old to new activity instance, from 1492 * loaded bitmaps, to network connections, to evenly actively running 1493 * threads. Note that you should <em>not</em> propagate any data that 1494 * may change based on the configuration, including any data loaded from 1495 * resources such as strings, layouts, or drawables. 1496 * 1497 * <p>The guarantee of no message handling during the switch to the next 1498 * activity simplifies use with active objects. For example if your retained 1499 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1500 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1501 * not be called from the call here until you execute the next instance's 1502 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1503 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1504 * running in a separate thread.) 1505 * 1506 * @return Return any Object holding the desired state to propagate to the 1507 * next activity instance. 1508 */ 1509 public Object onRetainNonConfigurationInstance() { 1510 return null; 1511 } 1512 1513 /** 1514 * Retrieve the non-configuration instance data that was previously 1515 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1516 * be available from the initial {@link #onCreate} and 1517 * {@link #onStart} calls to the new instance, allowing you to extract 1518 * any useful dynamic state from the previous instance. 1519 * 1520 * <p>Note that the data you retrieve here should <em>only</em> be used 1521 * as an optimization for handling configuration changes. You should always 1522 * be able to handle getting a null pointer back, and an activity must 1523 * still be able to restore itself to its previous state (through the 1524 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1525 * function returns null. 1526 * 1527 * @return Returns the object previously returned by 1528 * {@link #onRetainNonConfigurationChildInstances()} 1529 */ 1530 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1531 return mLastNonConfigurationInstances != null 1532 ? mLastNonConfigurationInstances.children : null; 1533 } 1534 1535 /** 1536 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1537 * it should return either a mapping from child activity id strings to arbitrary objects, 1538 * or null. This method is intended to be used by Activity framework subclasses that control a 1539 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1540 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1541 */ 1542 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1543 return null; 1544 } 1545 1546 NonConfigurationInstances retainNonConfigurationInstances() { 1547 Object activity = onRetainNonConfigurationInstance(); 1548 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1549 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1550 boolean retainLoaders = false; 1551 if (mAllLoaderManagers != null) { 1552 // prune out any loader managers that were already stopped and so 1553 // have nothing useful to retain. 1554 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 1555 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 1556 if (lm.mRetaining) { 1557 retainLoaders = true; 1558 } else { 1559 lm.doDestroy(); 1560 mAllLoaderManagers.removeAt(i); 1561 } 1562 } 1563 } 1564 if (activity == null && children == null && fragments == null && !retainLoaders) { 1565 return null; 1566 } 1567 1568 NonConfigurationInstances nci = new NonConfigurationInstances(); 1569 nci.activity = activity; 1570 nci.children = children; 1571 nci.fragments = fragments; 1572 nci.loaders = mAllLoaderManagers; 1573 return nci; 1574 } 1575 1576 public void onLowMemory() { 1577 mCalled = true; 1578 mFragments.dispatchLowMemory(); 1579 } 1580 1581 /** 1582 * Return the FragmentManager for interacting with fragments associated 1583 * with this activity. 1584 */ 1585 public FragmentManager getFragmentManager() { 1586 return mFragments; 1587 } 1588 1589 void invalidateFragmentIndex(int index) { 1590 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1591 if (mAllLoaderManagers != null) { 1592 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 1593 if (lm != null) { 1594 lm.doDestroy(); 1595 } 1596 mAllLoaderManagers.remove(index); 1597 } 1598 } 1599 1600 /** 1601 * Called when a Fragment is being attached to this activity, immediately 1602 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1603 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1604 */ 1605 public void onAttachFragment(Fragment fragment) { 1606 } 1607 1608 /** 1609 * Wrapper around 1610 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1611 * that gives the resulting {@link Cursor} to call 1612 * {@link #startManagingCursor} so that the activity will manage its 1613 * lifecycle for you. 1614 * 1615 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1616 * or later, consider instead using {@link LoaderManager} instead, available 1617 * via {@link #getLoaderManager()}.</em> 1618 * 1619 * @param uri The URI of the content provider to query. 1620 * @param projection List of columns to return. 1621 * @param selection SQL WHERE clause. 1622 * @param sortOrder SQL ORDER BY clause. 1623 * 1624 * @return The Cursor that was returned by query(). 1625 * 1626 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1627 * @see #startManagingCursor 1628 * @hide 1629 * 1630 * @deprecated Use {@link CursorLoader} instead. 1631 */ 1632 @Deprecated 1633 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1634 String sortOrder) { 1635 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1636 if (c != null) { 1637 startManagingCursor(c); 1638 } 1639 return c; 1640 } 1641 1642 /** 1643 * Wrapper around 1644 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1645 * that gives the resulting {@link Cursor} to call 1646 * {@link #startManagingCursor} so that the activity will manage its 1647 * lifecycle for you. 1648 * 1649 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1650 * or later, consider instead using {@link LoaderManager} instead, available 1651 * via {@link #getLoaderManager()}.</em> 1652 * 1653 * @param uri The URI of the content provider to query. 1654 * @param projection List of columns to return. 1655 * @param selection SQL WHERE clause. 1656 * @param selectionArgs The arguments to selection, if any ?s are pesent 1657 * @param sortOrder SQL ORDER BY clause. 1658 * 1659 * @return The Cursor that was returned by query(). 1660 * 1661 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1662 * @see #startManagingCursor 1663 * 1664 * @deprecated Use {@link CursorLoader} instead. 1665 */ 1666 @Deprecated 1667 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1668 String[] selectionArgs, String sortOrder) { 1669 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1670 if (c != null) { 1671 startManagingCursor(c); 1672 } 1673 return c; 1674 } 1675 1676 /** 1677 * This method allows the activity to take care of managing the given 1678 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1679 * That is, when the activity is stopped it will automatically call 1680 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1681 * it will call {@link Cursor#requery} for you. When the activity is 1682 * destroyed, all managed Cursors will be closed automatically. 1683 * 1684 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1685 * or later, consider instead using {@link LoaderManager} instead, available 1686 * via {@link #getLoaderManager()}.</em> 1687 * 1688 * @param c The Cursor to be managed. 1689 * 1690 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1691 * @see #stopManagingCursor 1692 * 1693 * @deprecated Use {@link CursorLoader} instead. 1694 */ 1695 @Deprecated 1696 public void startManagingCursor(Cursor c) { 1697 synchronized (mManagedCursors) { 1698 mManagedCursors.add(new ManagedCursor(c)); 1699 } 1700 } 1701 1702 /** 1703 * Given a Cursor that was previously given to 1704 * {@link #startManagingCursor}, stop the activity's management of that 1705 * cursor. 1706 * 1707 * @param c The Cursor that was being managed. 1708 * 1709 * @see #startManagingCursor 1710 * 1711 * @deprecated Use {@link CursorLoader} instead. 1712 */ 1713 @Deprecated 1714 public void stopManagingCursor(Cursor c) { 1715 synchronized (mManagedCursors) { 1716 final int N = mManagedCursors.size(); 1717 for (int i=0; i<N; i++) { 1718 ManagedCursor mc = mManagedCursors.get(i); 1719 if (mc.mCursor == c) { 1720 mManagedCursors.remove(i); 1721 break; 1722 } 1723 } 1724 } 1725 } 1726 1727 /** 1728 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1729 * this is a no-op. 1730 * @hide 1731 */ 1732 @Deprecated 1733 public void setPersistent(boolean isPersistent) { 1734 } 1735 1736 /** 1737 * Finds a view that was identified by the id attribute from the XML that 1738 * was processed in {@link #onCreate}. 1739 * 1740 * @return The view if found or null otherwise. 1741 */ 1742 public View findViewById(int id) { 1743 return getWindow().findViewById(id); 1744 } 1745 1746 /** 1747 * Retrieve a reference to this activity's ActionBar. 1748 * 1749 * @return The Activity's ActionBar, or null if it does not have one. 1750 */ 1751 public ActionBar getActionBar() { 1752 initActionBar(); 1753 return mActionBar; 1754 } 1755 1756 /** 1757 * Creates a new ActionBar, locates the inflated ActionBarView, 1758 * initializes the ActionBar with the view, and sets mActionBar. 1759 */ 1760 private void initActionBar() { 1761 Window window = getWindow(); 1762 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1763 return; 1764 } 1765 1766 mActionBar = new ActionBarImpl(this); 1767 } 1768 1769 /** 1770 * Set the activity content from a layout resource. The resource will be 1771 * inflated, adding all top-level views to the activity. 1772 * 1773 * @param layoutResID Resource ID to be inflated. 1774 * 1775 * @see #setContentView(android.view.View) 1776 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1777 */ 1778 public void setContentView(int layoutResID) { 1779 getWindow().setContentView(layoutResID); 1780 initActionBar(); 1781 } 1782 1783 /** 1784 * Set the activity content to an explicit view. This view is placed 1785 * directly into the activity's view hierarchy. It can itself be a complex 1786 * view hierarchy. When calling this method, the layout parameters of the 1787 * specified view are ignored. Both the width and the height of the view are 1788 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1789 * your own layout parameters, invoke 1790 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1791 * instead. 1792 * 1793 * @param view The desired content to display. 1794 * 1795 * @see #setContentView(int) 1796 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1797 */ 1798 public void setContentView(View view) { 1799 getWindow().setContentView(view); 1800 initActionBar(); 1801 } 1802 1803 /** 1804 * Set the activity content to an explicit view. This view is placed 1805 * directly into the activity's view hierarchy. It can itself be a complex 1806 * view hierarchy. 1807 * 1808 * @param view The desired content to display. 1809 * @param params Layout parameters for the view. 1810 * 1811 * @see #setContentView(android.view.View) 1812 * @see #setContentView(int) 1813 */ 1814 public void setContentView(View view, ViewGroup.LayoutParams params) { 1815 getWindow().setContentView(view, params); 1816 initActionBar(); 1817 } 1818 1819 /** 1820 * Add an additional content view to the activity. Added after any existing 1821 * ones in the activity -- existing views are NOT removed. 1822 * 1823 * @param view The desired content to display. 1824 * @param params Layout parameters for the view. 1825 */ 1826 public void addContentView(View view, ViewGroup.LayoutParams params) { 1827 getWindow().addContentView(view, params); 1828 initActionBar(); 1829 } 1830 1831 /** 1832 * Sets whether this activity is finished when touched outside its window's 1833 * bounds. 1834 */ 1835 public void setFinishOnTouchOutside(boolean finish) { 1836 mWindow.setCloseOnTouchOutside(finish); 1837 } 1838 1839 /** 1840 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1841 * keys. 1842 * 1843 * @see #setDefaultKeyMode 1844 */ 1845 static public final int DEFAULT_KEYS_DISABLE = 0; 1846 /** 1847 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1848 * key handling. 1849 * 1850 * @see #setDefaultKeyMode 1851 */ 1852 static public final int DEFAULT_KEYS_DIALER = 1; 1853 /** 1854 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1855 * default key handling. 1856 * 1857 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1858 * 1859 * @see #setDefaultKeyMode 1860 */ 1861 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1862 /** 1863 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1864 * will start an application-defined search. (If the application or activity does not 1865 * actually define a search, the the keys will be ignored.) 1866 * 1867 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1868 * 1869 * @see #setDefaultKeyMode 1870 */ 1871 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1872 1873 /** 1874 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1875 * will start a global search (typically web search, but some platforms may define alternate 1876 * methods for global search) 1877 * 1878 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1879 * 1880 * @see #setDefaultKeyMode 1881 */ 1882 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1883 1884 /** 1885 * Select the default key handling for this activity. This controls what 1886 * will happen to key events that are not otherwise handled. The default 1887 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1888 * floor. Other modes allow you to launch the dialer 1889 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1890 * menu without requiring the menu key be held down 1891 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1892 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1893 * 1894 * <p>Note that the mode selected here does not impact the default 1895 * handling of system keys, such as the "back" and "menu" keys, and your 1896 * activity and its views always get a first chance to receive and handle 1897 * all application keys. 1898 * 1899 * @param mode The desired default key mode constant. 1900 * 1901 * @see #DEFAULT_KEYS_DISABLE 1902 * @see #DEFAULT_KEYS_DIALER 1903 * @see #DEFAULT_KEYS_SHORTCUT 1904 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1905 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1906 * @see #onKeyDown 1907 */ 1908 public final void setDefaultKeyMode(int mode) { 1909 mDefaultKeyMode = mode; 1910 1911 // Some modes use a SpannableStringBuilder to track & dispatch input events 1912 // This list must remain in sync with the switch in onKeyDown() 1913 switch (mode) { 1914 case DEFAULT_KEYS_DISABLE: 1915 case DEFAULT_KEYS_SHORTCUT: 1916 mDefaultKeySsb = null; // not used in these modes 1917 break; 1918 case DEFAULT_KEYS_DIALER: 1919 case DEFAULT_KEYS_SEARCH_LOCAL: 1920 case DEFAULT_KEYS_SEARCH_GLOBAL: 1921 mDefaultKeySsb = new SpannableStringBuilder(); 1922 Selection.setSelection(mDefaultKeySsb,0); 1923 break; 1924 default: 1925 throw new IllegalArgumentException(); 1926 } 1927 } 1928 1929 /** 1930 * Called when a key was pressed down and not handled by any of the views 1931 * inside of the activity. So, for example, key presses while the cursor 1932 * is inside a TextView will not trigger the event (unless it is a navigation 1933 * to another object) because TextView handles its own key presses. 1934 * 1935 * <p>If the focused view didn't want this event, this method is called. 1936 * 1937 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1938 * by calling {@link #onBackPressed()}, though the behavior varies based 1939 * on the application compatibility mode: for 1940 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1941 * it will set up the dispatch to call {@link #onKeyUp} where the action 1942 * will be performed; for earlier applications, it will perform the 1943 * action immediately in on-down, as those versions of the platform 1944 * behaved. 1945 * 1946 * <p>Other additional default key handling may be performed 1947 * if configured with {@link #setDefaultKeyMode}. 1948 * 1949 * @return Return <code>true</code> to prevent this event from being propagated 1950 * further, or <code>false</code> to indicate that you have not handled 1951 * this event and it should continue to be propagated. 1952 * @see #onKeyUp 1953 * @see android.view.KeyEvent 1954 */ 1955 public boolean onKeyDown(int keyCode, KeyEvent event) { 1956 if (keyCode == KeyEvent.KEYCODE_BACK) { 1957 if (getApplicationInfo().targetSdkVersion 1958 >= Build.VERSION_CODES.ECLAIR) { 1959 event.startTracking(); 1960 } else { 1961 onBackPressed(); 1962 } 1963 return true; 1964 } 1965 1966 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 1967 return false; 1968 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 1969 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 1970 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 1971 return true; 1972 } 1973 return false; 1974 } else { 1975 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 1976 boolean clearSpannable = false; 1977 boolean handled; 1978 if ((event.getRepeatCount() != 0) || event.isSystem()) { 1979 clearSpannable = true; 1980 handled = false; 1981 } else { 1982 handled = TextKeyListener.getInstance().onKeyDown( 1983 null, mDefaultKeySsb, keyCode, event); 1984 if (handled && mDefaultKeySsb.length() > 0) { 1985 // something useable has been typed - dispatch it now. 1986 1987 final String str = mDefaultKeySsb.toString(); 1988 clearSpannable = true; 1989 1990 switch (mDefaultKeyMode) { 1991 case DEFAULT_KEYS_DIALER: 1992 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 1993 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 1994 startActivity(intent); 1995 break; 1996 case DEFAULT_KEYS_SEARCH_LOCAL: 1997 startSearch(str, false, null, false); 1998 break; 1999 case DEFAULT_KEYS_SEARCH_GLOBAL: 2000 startSearch(str, false, null, true); 2001 break; 2002 } 2003 } 2004 } 2005 if (clearSpannable) { 2006 mDefaultKeySsb.clear(); 2007 mDefaultKeySsb.clearSpans(); 2008 Selection.setSelection(mDefaultKeySsb,0); 2009 } 2010 return handled; 2011 } 2012 } 2013 2014 /** 2015 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2016 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2017 * the event). 2018 */ 2019 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2020 return false; 2021 } 2022 2023 /** 2024 * Called when a key was released and not handled by any of the views 2025 * inside of the activity. So, for example, key presses while the cursor 2026 * is inside a TextView will not trigger the event (unless it is a navigation 2027 * to another object) because TextView handles its own key presses. 2028 * 2029 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2030 * and go back. 2031 * 2032 * @return Return <code>true</code> to prevent this event from being propagated 2033 * further, or <code>false</code> to indicate that you have not handled 2034 * this event and it should continue to be propagated. 2035 * @see #onKeyDown 2036 * @see KeyEvent 2037 */ 2038 public boolean onKeyUp(int keyCode, KeyEvent event) { 2039 if (getApplicationInfo().targetSdkVersion 2040 >= Build.VERSION_CODES.ECLAIR) { 2041 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2042 && !event.isCanceled()) { 2043 onBackPressed(); 2044 return true; 2045 } 2046 } 2047 return false; 2048 } 2049 2050 /** 2051 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2052 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2053 * the event). 2054 */ 2055 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2056 return false; 2057 } 2058 2059 /** 2060 * Called when the activity has detected the user's press of the back 2061 * key. The default implementation simply finishes the current activity, 2062 * but you can override this to do whatever you want. 2063 */ 2064 public void onBackPressed() { 2065 if (!mFragments.popBackStackImmediate()) { 2066 finish(); 2067 } 2068 } 2069 2070 /** 2071 * Called when a key shortcut event is not handled by any of the views in the Activity. 2072 * Override this method to implement global key shortcuts for the Activity. 2073 * Key shortcuts can also be implemented by setting the 2074 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2075 * 2076 * @param keyCode The value in event.getKeyCode(). 2077 * @param event Description of the key event. 2078 * @return True if the key shortcut was handled. 2079 */ 2080 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2081 return false; 2082 } 2083 2084 /** 2085 * Called when a touch screen event was not handled by any of the views 2086 * under it. This is most useful to process touch events that happen 2087 * outside of your window bounds, where there is no view to receive it. 2088 * 2089 * @param event The touch screen event being processed. 2090 * 2091 * @return Return true if you have consumed the event, false if you haven't. 2092 * The default implementation always returns false. 2093 */ 2094 public boolean onTouchEvent(MotionEvent event) { 2095 if (mWindow.shouldCloseOnTouch(this, event)) { 2096 finish(); 2097 return true; 2098 } 2099 2100 return false; 2101 } 2102 2103 /** 2104 * Called when the trackball was moved and not handled by any of the 2105 * views inside of the activity. So, for example, if the trackball moves 2106 * while focus is on a button, you will receive a call here because 2107 * buttons do not normally do anything with trackball events. The call 2108 * here happens <em>before</em> trackball movements are converted to 2109 * DPAD key events, which then get sent back to the view hierarchy, and 2110 * will be processed at the point for things like focus navigation. 2111 * 2112 * @param event The trackball event being processed. 2113 * 2114 * @return Return true if you have consumed the event, false if you haven't. 2115 * The default implementation always returns false. 2116 */ 2117 public boolean onTrackballEvent(MotionEvent event) { 2118 return false; 2119 } 2120 2121 /** 2122 * Called when a generic motion event was not handled by any of the 2123 * views inside of the activity. 2124 * <p> 2125 * Generic motion events describe joystick movements, mouse hovers, track pad 2126 * touches, scroll wheel movements and other input events. The 2127 * {@link MotionEvent#getSource() source} of the motion event specifies 2128 * the class of input that was received. Implementations of this method 2129 * must examine the bits in the source before processing the event. 2130 * The following code example shows how this is done. 2131 * </p><p> 2132 * Generic motion events with source class 2133 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2134 * are delivered to the view under the pointer. All other generic motion events are 2135 * delivered to the focused view. 2136 * </p><p> 2137 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2138 * handle this event. 2139 * </p> 2140 * 2141 * @param event The generic motion event being processed. 2142 * 2143 * @return Return true if you have consumed the event, false if you haven't. 2144 * The default implementation always returns false. 2145 */ 2146 public boolean onGenericMotionEvent(MotionEvent event) { 2147 return false; 2148 } 2149 2150 /** 2151 * Called whenever a key, touch, or trackball event is dispatched to the 2152 * activity. Implement this method if you wish to know that the user has 2153 * interacted with the device in some way while your activity is running. 2154 * This callback and {@link #onUserLeaveHint} are intended to help 2155 * activities manage status bar notifications intelligently; specifically, 2156 * for helping activities determine the proper time to cancel a notfication. 2157 * 2158 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2159 * be accompanied by calls to {@link #onUserInteraction}. This 2160 * ensures that your activity will be told of relevant user activity such 2161 * as pulling down the notification pane and touching an item there. 2162 * 2163 * <p>Note that this callback will be invoked for the touch down action 2164 * that begins a touch gesture, but may not be invoked for the touch-moved 2165 * and touch-up actions that follow. 2166 * 2167 * @see #onUserLeaveHint() 2168 */ 2169 public void onUserInteraction() { 2170 } 2171 2172 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2173 // Update window manager if: we have a view, that view is 2174 // attached to its parent (which will be a RootView), and 2175 // this activity is not embedded. 2176 if (mParent == null) { 2177 View decor = mDecor; 2178 if (decor != null && decor.getParent() != null) { 2179 getWindowManager().updateViewLayout(decor, params); 2180 } 2181 } 2182 } 2183 2184 public void onContentChanged() { 2185 } 2186 2187 /** 2188 * Called when the current {@link Window} of the activity gains or loses 2189 * focus. This is the best indicator of whether this activity is visible 2190 * to the user. The default implementation clears the key tracking 2191 * state, so should always be called. 2192 * 2193 * <p>Note that this provides information about global focus state, which 2194 * is managed independently of activity lifecycles. As such, while focus 2195 * changes will generally have some relation to lifecycle changes (an 2196 * activity that is stopped will not generally get window focus), you 2197 * should not rely on any particular order between the callbacks here and 2198 * those in the other lifecycle methods such as {@link #onResume}. 2199 * 2200 * <p>As a general rule, however, a resumed activity will have window 2201 * focus... unless it has displayed other dialogs or popups that take 2202 * input focus, in which case the activity itself will not have focus 2203 * when the other windows have it. Likewise, the system may display 2204 * system-level windows (such as the status bar notification panel or 2205 * a system alert) which will temporarily take window input focus without 2206 * pausing the foreground activity. 2207 * 2208 * @param hasFocus Whether the window of this activity has focus. 2209 * 2210 * @see #hasWindowFocus() 2211 * @see #onResume 2212 * @see View#onWindowFocusChanged(boolean) 2213 */ 2214 public void onWindowFocusChanged(boolean hasFocus) { 2215 } 2216 2217 /** 2218 * Called when the main window associated with the activity has been 2219 * attached to the window manager. 2220 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2221 * for more information. 2222 * @see View#onAttachedToWindow 2223 */ 2224 public void onAttachedToWindow() { 2225 } 2226 2227 /** 2228 * Called when the main window associated with the activity has been 2229 * detached from the window manager. 2230 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2231 * for more information. 2232 * @see View#onDetachedFromWindow 2233 */ 2234 public void onDetachedFromWindow() { 2235 } 2236 2237 /** 2238 * Returns true if this activity's <em>main</em> window currently has window focus. 2239 * Note that this is not the same as the view itself having focus. 2240 * 2241 * @return True if this activity's main window currently has window focus. 2242 * 2243 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2244 */ 2245 public boolean hasWindowFocus() { 2246 Window w = getWindow(); 2247 if (w != null) { 2248 View d = w.getDecorView(); 2249 if (d != null) { 2250 return d.hasWindowFocus(); 2251 } 2252 } 2253 return false; 2254 } 2255 2256 /** 2257 * Called to process key events. You can override this to intercept all 2258 * key events before they are dispatched to the window. Be sure to call 2259 * this implementation for key events that should be handled normally. 2260 * 2261 * @param event The key event. 2262 * 2263 * @return boolean Return true if this event was consumed. 2264 */ 2265 public boolean dispatchKeyEvent(KeyEvent event) { 2266 onUserInteraction(); 2267 Window win = getWindow(); 2268 if (win.superDispatchKeyEvent(event)) { 2269 return true; 2270 } 2271 View decor = mDecor; 2272 if (decor == null) decor = win.getDecorView(); 2273 return event.dispatch(this, decor != null 2274 ? decor.getKeyDispatcherState() : null, this); 2275 } 2276 2277 /** 2278 * Called to process a key shortcut event. 2279 * You can override this to intercept all key shortcut events before they are 2280 * dispatched to the window. Be sure to call this implementation for key shortcut 2281 * events that should be handled normally. 2282 * 2283 * @param event The key shortcut event. 2284 * @return True if this event was consumed. 2285 */ 2286 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2287 onUserInteraction(); 2288 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2289 return true; 2290 } 2291 return onKeyShortcut(event.getKeyCode(), event); 2292 } 2293 2294 /** 2295 * Called to process touch screen events. You can override this to 2296 * intercept all touch screen events before they are dispatched to the 2297 * window. Be sure to call this implementation for touch screen events 2298 * that should be handled normally. 2299 * 2300 * @param ev The touch screen event. 2301 * 2302 * @return boolean Return true if this event was consumed. 2303 */ 2304 public boolean dispatchTouchEvent(MotionEvent ev) { 2305 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2306 onUserInteraction(); 2307 } 2308 if (getWindow().superDispatchTouchEvent(ev)) { 2309 return true; 2310 } 2311 return onTouchEvent(ev); 2312 } 2313 2314 /** 2315 * Called to process trackball events. You can override this to 2316 * intercept all trackball events before they are dispatched to the 2317 * window. Be sure to call this implementation for trackball events 2318 * that should be handled normally. 2319 * 2320 * @param ev The trackball event. 2321 * 2322 * @return boolean Return true if this event was consumed. 2323 */ 2324 public boolean dispatchTrackballEvent(MotionEvent ev) { 2325 onUserInteraction(); 2326 if (getWindow().superDispatchTrackballEvent(ev)) { 2327 return true; 2328 } 2329 return onTrackballEvent(ev); 2330 } 2331 2332 /** 2333 * Called to process generic motion events. You can override this to 2334 * intercept all generic motion events before they are dispatched to the 2335 * window. Be sure to call this implementation for generic motion events 2336 * that should be handled normally. 2337 * 2338 * @param ev The generic motion event. 2339 * 2340 * @return boolean Return true if this event was consumed. 2341 */ 2342 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2343 onUserInteraction(); 2344 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2345 return true; 2346 } 2347 return onGenericMotionEvent(ev); 2348 } 2349 2350 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2351 event.setClassName(getClass().getName()); 2352 event.setPackageName(getPackageName()); 2353 2354 LayoutParams params = getWindow().getAttributes(); 2355 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2356 (params.height == LayoutParams.MATCH_PARENT); 2357 event.setFullScreen(isFullScreen); 2358 2359 CharSequence title = getTitle(); 2360 if (!TextUtils.isEmpty(title)) { 2361 event.getText().add(title); 2362 } 2363 2364 return true; 2365 } 2366 2367 /** 2368 * Default implementation of 2369 * {@link android.view.Window.Callback#onCreatePanelView} 2370 * for activities. This 2371 * simply returns null so that all panel sub-windows will have the default 2372 * menu behavior. 2373 */ 2374 public View onCreatePanelView(int featureId) { 2375 return null; 2376 } 2377 2378 /** 2379 * Default implementation of 2380 * {@link android.view.Window.Callback#onCreatePanelMenu} 2381 * for activities. This calls through to the new 2382 * {@link #onCreateOptionsMenu} method for the 2383 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2384 * so that subclasses of Activity don't need to deal with feature codes. 2385 */ 2386 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2387 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2388 boolean show = onCreateOptionsMenu(menu); 2389 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2390 return show; 2391 } 2392 return false; 2393 } 2394 2395 /** 2396 * Default implementation of 2397 * {@link android.view.Window.Callback#onPreparePanel} 2398 * for activities. This 2399 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2400 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2401 * panel, so that subclasses of 2402 * Activity don't need to deal with feature codes. 2403 */ 2404 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2405 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2406 boolean goforit = onPrepareOptionsMenu(menu); 2407 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2408 return goforit && menu.hasVisibleItems(); 2409 } 2410 return true; 2411 } 2412 2413 /** 2414 * {@inheritDoc} 2415 * 2416 * @return The default implementation returns true. 2417 */ 2418 public boolean onMenuOpened(int featureId, Menu menu) { 2419 if (featureId == Window.FEATURE_ACTION_BAR) { 2420 if (mActionBar != null) { 2421 mActionBar.dispatchMenuVisibilityChanged(true); 2422 } else { 2423 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2424 } 2425 } 2426 return true; 2427 } 2428 2429 /** 2430 * Default implementation of 2431 * {@link android.view.Window.Callback#onMenuItemSelected} 2432 * for activities. This calls through to the new 2433 * {@link #onOptionsItemSelected} method for the 2434 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2435 * panel, so that subclasses of 2436 * Activity don't need to deal with feature codes. 2437 */ 2438 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2439 switch (featureId) { 2440 case Window.FEATURE_OPTIONS_PANEL: 2441 // Put event logging here so it gets called even if subclass 2442 // doesn't call through to superclass's implmeentation of each 2443 // of these methods below 2444 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2445 if (onOptionsItemSelected(item)) { 2446 return true; 2447 } 2448 return mFragments.dispatchOptionsItemSelected(item); 2449 2450 case Window.FEATURE_CONTEXT_MENU: 2451 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2452 if (onContextItemSelected(item)) { 2453 return true; 2454 } 2455 return mFragments.dispatchContextItemSelected(item); 2456 2457 default: 2458 return false; 2459 } 2460 } 2461 2462 /** 2463 * Default implementation of 2464 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2465 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2466 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2467 * so that subclasses of Activity don't need to deal with feature codes. 2468 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2469 * {@link #onContextMenuClosed(Menu)} will be called. 2470 */ 2471 public void onPanelClosed(int featureId, Menu menu) { 2472 switch (featureId) { 2473 case Window.FEATURE_OPTIONS_PANEL: 2474 mFragments.dispatchOptionsMenuClosed(menu); 2475 onOptionsMenuClosed(menu); 2476 break; 2477 2478 case Window.FEATURE_CONTEXT_MENU: 2479 onContextMenuClosed(menu); 2480 break; 2481 2482 case Window.FEATURE_ACTION_BAR: 2483 mActionBar.dispatchMenuVisibilityChanged(false); 2484 break; 2485 } 2486 } 2487 2488 /** 2489 * Declare that the options menu has changed, so should be recreated. 2490 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2491 * time it needs to be displayed. 2492 */ 2493 public void invalidateOptionsMenu() { 2494 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2495 } 2496 2497 /** 2498 * Initialize the contents of the Activity's standard options menu. You 2499 * should place your menu items in to <var>menu</var>. 2500 * 2501 * <p>This is only called once, the first time the options menu is 2502 * displayed. To update the menu every time it is displayed, see 2503 * {@link #onPrepareOptionsMenu}. 2504 * 2505 * <p>The default implementation populates the menu with standard system 2506 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2507 * they will be correctly ordered with application-defined menu items. 2508 * Deriving classes should always call through to the base implementation. 2509 * 2510 * <p>You can safely hold on to <var>menu</var> (and any items created 2511 * from it), making modifications to it as desired, until the next 2512 * time onCreateOptionsMenu() is called. 2513 * 2514 * <p>When you add items to the menu, you can implement the Activity's 2515 * {@link #onOptionsItemSelected} method to handle them there. 2516 * 2517 * @param menu The options menu in which you place your items. 2518 * 2519 * @return You must return true for the menu to be displayed; 2520 * if you return false it will not be shown. 2521 * 2522 * @see #onPrepareOptionsMenu 2523 * @see #onOptionsItemSelected 2524 */ 2525 public boolean onCreateOptionsMenu(Menu menu) { 2526 if (mParent != null) { 2527 return mParent.onCreateOptionsMenu(menu); 2528 } 2529 return true; 2530 } 2531 2532 /** 2533 * Prepare the Screen's standard options menu to be displayed. This is 2534 * called right before the menu is shown, every time it is shown. You can 2535 * use this method to efficiently enable/disable items or otherwise 2536 * dynamically modify the contents. 2537 * 2538 * <p>The default implementation updates the system menu items based on the 2539 * activity's state. Deriving classes should always call through to the 2540 * base class implementation. 2541 * 2542 * @param menu The options menu as last shown or first initialized by 2543 * onCreateOptionsMenu(). 2544 * 2545 * @return You must return true for the menu to be displayed; 2546 * if you return false it will not be shown. 2547 * 2548 * @see #onCreateOptionsMenu 2549 */ 2550 public boolean onPrepareOptionsMenu(Menu menu) { 2551 if (mParent != null) { 2552 return mParent.onPrepareOptionsMenu(menu); 2553 } 2554 return true; 2555 } 2556 2557 /** 2558 * This hook is called whenever an item in your options menu is selected. 2559 * The default implementation simply returns false to have the normal 2560 * processing happen (calling the item's Runnable or sending a message to 2561 * its Handler as appropriate). You can use this method for any items 2562 * for which you would like to do processing without those other 2563 * facilities. 2564 * 2565 * <p>Derived classes should call through to the base class for it to 2566 * perform the default menu handling. 2567 * 2568 * @param item The menu item that was selected. 2569 * 2570 * @return boolean Return false to allow normal menu processing to 2571 * proceed, true to consume it here. 2572 * 2573 * @see #onCreateOptionsMenu 2574 */ 2575 public boolean onOptionsItemSelected(MenuItem item) { 2576 if (mParent != null) { 2577 return mParent.onOptionsItemSelected(item); 2578 } 2579 return false; 2580 } 2581 2582 /** 2583 * This hook is called whenever the options menu is being closed (either by the user canceling 2584 * the menu with the back/menu button, or when an item is selected). 2585 * 2586 * @param menu The options menu as last shown or first initialized by 2587 * onCreateOptionsMenu(). 2588 */ 2589 public void onOptionsMenuClosed(Menu menu) { 2590 if (mParent != null) { 2591 mParent.onOptionsMenuClosed(menu); 2592 } 2593 } 2594 2595 /** 2596 * Programmatically opens the options menu. If the options menu is already 2597 * open, this method does nothing. 2598 */ 2599 public void openOptionsMenu() { 2600 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2601 } 2602 2603 /** 2604 * Progammatically closes the options menu. If the options menu is already 2605 * closed, this method does nothing. 2606 */ 2607 public void closeOptionsMenu() { 2608 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2609 } 2610 2611 /** 2612 * Called when a context menu for the {@code view} is about to be shown. 2613 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2614 * time the context menu is about to be shown and should be populated for 2615 * the view (or item inside the view for {@link AdapterView} subclasses, 2616 * this can be found in the {@code menuInfo})). 2617 * <p> 2618 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2619 * item has been selected. 2620 * <p> 2621 * It is not safe to hold onto the context menu after this method returns. 2622 * {@inheritDoc} 2623 */ 2624 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2625 } 2626 2627 /** 2628 * Registers a context menu to be shown for the given view (multiple views 2629 * can show the context menu). This method will set the 2630 * {@link OnCreateContextMenuListener} on the view to this activity, so 2631 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2632 * called when it is time to show the context menu. 2633 * 2634 * @see #unregisterForContextMenu(View) 2635 * @param view The view that should show a context menu. 2636 */ 2637 public void registerForContextMenu(View view) { 2638 view.setOnCreateContextMenuListener(this); 2639 } 2640 2641 /** 2642 * Prevents a context menu to be shown for the given view. This method will remove the 2643 * {@link OnCreateContextMenuListener} on the view. 2644 * 2645 * @see #registerForContextMenu(View) 2646 * @param view The view that should stop showing a context menu. 2647 */ 2648 public void unregisterForContextMenu(View view) { 2649 view.setOnCreateContextMenuListener(null); 2650 } 2651 2652 /** 2653 * Programmatically opens the context menu for a particular {@code view}. 2654 * The {@code view} should have been added via 2655 * {@link #registerForContextMenu(View)}. 2656 * 2657 * @param view The view to show the context menu for. 2658 */ 2659 public void openContextMenu(View view) { 2660 view.showContextMenu(); 2661 } 2662 2663 /** 2664 * Programmatically closes the most recently opened context menu, if showing. 2665 */ 2666 public void closeContextMenu() { 2667 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2668 } 2669 2670 /** 2671 * This hook is called whenever an item in a context menu is selected. The 2672 * default implementation simply returns false to have the normal processing 2673 * happen (calling the item's Runnable or sending a message to its Handler 2674 * as appropriate). You can use this method for any items for which you 2675 * would like to do processing without those other facilities. 2676 * <p> 2677 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2678 * View that added this menu item. 2679 * <p> 2680 * Derived classes should call through to the base class for it to perform 2681 * the default menu handling. 2682 * 2683 * @param item The context menu item that was selected. 2684 * @return boolean Return false to allow normal context menu processing to 2685 * proceed, true to consume it here. 2686 */ 2687 public boolean onContextItemSelected(MenuItem item) { 2688 if (mParent != null) { 2689 return mParent.onContextItemSelected(item); 2690 } 2691 return false; 2692 } 2693 2694 /** 2695 * This hook is called whenever the context menu is being closed (either by 2696 * the user canceling the menu with the back/menu button, or when an item is 2697 * selected). 2698 * 2699 * @param menu The context menu that is being closed. 2700 */ 2701 public void onContextMenuClosed(Menu menu) { 2702 if (mParent != null) { 2703 mParent.onContextMenuClosed(menu); 2704 } 2705 } 2706 2707 /** 2708 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2709 */ 2710 @Deprecated 2711 protected Dialog onCreateDialog(int id) { 2712 return null; 2713 } 2714 2715 /** 2716 * Callback for creating dialogs that are managed (saved and restored) for you 2717 * by the activity. The default implementation calls through to 2718 * {@link #onCreateDialog(int)} for compatibility. 2719 * 2720 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2721 * or later, consider instead using a {@link DialogFragment} instead.</em> 2722 * 2723 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2724 * this method the first time, and hang onto it thereafter. Any dialog 2725 * that is created by this method will automatically be saved and restored 2726 * for you, including whether it is showing. 2727 * 2728 * <p>If you would like the activity to manage saving and restoring dialogs 2729 * for you, you should override this method and handle any ids that are 2730 * passed to {@link #showDialog}. 2731 * 2732 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2733 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2734 * 2735 * @param id The id of the dialog. 2736 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2737 * @return The dialog. If you return null, the dialog will not be created. 2738 * 2739 * @see #onPrepareDialog(int, Dialog, Bundle) 2740 * @see #showDialog(int, Bundle) 2741 * @see #dismissDialog(int) 2742 * @see #removeDialog(int) 2743 */ 2744 protected Dialog onCreateDialog(int id, Bundle args) { 2745 return onCreateDialog(id); 2746 } 2747 2748 /** 2749 * @deprecated Old no-arguments version of 2750 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2751 */ 2752 @Deprecated 2753 protected void onPrepareDialog(int id, Dialog dialog) { 2754 dialog.setOwnerActivity(this); 2755 } 2756 2757 /** 2758 * Provides an opportunity to prepare a managed dialog before it is being 2759 * shown. The default implementation calls through to 2760 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2761 * 2762 * <p> 2763 * Override this if you need to update a managed dialog based on the state 2764 * of the application each time it is shown. For example, a time picker 2765 * dialog might want to be updated with the current time. You should call 2766 * through to the superclass's implementation. The default implementation 2767 * will set this Activity as the owner activity on the Dialog. 2768 * 2769 * @param id The id of the managed dialog. 2770 * @param dialog The dialog. 2771 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2772 * @see #onCreateDialog(int, Bundle) 2773 * @see #showDialog(int) 2774 * @see #dismissDialog(int) 2775 * @see #removeDialog(int) 2776 */ 2777 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2778 onPrepareDialog(id, dialog); 2779 } 2780 2781 /** 2782 * Simple version of {@link #showDialog(int, Bundle)} that does not 2783 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2784 * with null arguments. 2785 */ 2786 public final void showDialog(int id) { 2787 showDialog(id, null); 2788 } 2789 2790 /** 2791 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2792 * will be made with the same id the first time this is called for a given 2793 * id. From thereafter, the dialog will be automatically saved and restored. 2794 * 2795 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2796 * or later, consider instead using a {@link DialogFragment} instead.</em> 2797 * 2798 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2799 * be made to provide an opportunity to do any timely preparation. 2800 * 2801 * @param id The id of the managed dialog. 2802 * @param args Arguments to pass through to the dialog. These will be saved 2803 * and restored for you. Note that if the dialog is already created, 2804 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2805 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2806 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2807 * @return Returns true if the Dialog was created; false is returned if 2808 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2809 * 2810 * @see Dialog 2811 * @see #onCreateDialog(int, Bundle) 2812 * @see #onPrepareDialog(int, Dialog, Bundle) 2813 * @see #dismissDialog(int) 2814 * @see #removeDialog(int) 2815 */ 2816 public final boolean showDialog(int id, Bundle args) { 2817 if (mManagedDialogs == null) { 2818 mManagedDialogs = new SparseArray<ManagedDialog>(); 2819 } 2820 ManagedDialog md = mManagedDialogs.get(id); 2821 if (md == null) { 2822 md = new ManagedDialog(); 2823 md.mDialog = createDialog(id, null, args); 2824 if (md.mDialog == null) { 2825 return false; 2826 } 2827 mManagedDialogs.put(id, md); 2828 } 2829 2830 md.mArgs = args; 2831 onPrepareDialog(id, md.mDialog, args); 2832 md.mDialog.show(); 2833 return true; 2834 } 2835 2836 /** 2837 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2838 * 2839 * @param id The id of the managed dialog. 2840 * 2841 * @throws IllegalArgumentException if the id was not previously shown via 2842 * {@link #showDialog(int)}. 2843 * 2844 * @see #onCreateDialog(int, Bundle) 2845 * @see #onPrepareDialog(int, Dialog, Bundle) 2846 * @see #showDialog(int) 2847 * @see #removeDialog(int) 2848 */ 2849 public final void dismissDialog(int id) { 2850 if (mManagedDialogs == null) { 2851 throw missingDialog(id); 2852 } 2853 2854 final ManagedDialog md = mManagedDialogs.get(id); 2855 if (md == null) { 2856 throw missingDialog(id); 2857 } 2858 md.mDialog.dismiss(); 2859 } 2860 2861 /** 2862 * Creates an exception to throw if a user passed in a dialog id that is 2863 * unexpected. 2864 */ 2865 private IllegalArgumentException missingDialog(int id) { 2866 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2867 + "shown via Activity#showDialog"); 2868 } 2869 2870 /** 2871 * Removes any internal references to a dialog managed by this Activity. 2872 * If the dialog is showing, it will dismiss it as part of the clean up. 2873 * 2874 * <p>This can be useful if you know that you will never show a dialog again and 2875 * want to avoid the overhead of saving and restoring it in the future. 2876 * 2877 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2878 * will not throw an exception if you try to remove an ID that does not 2879 * currently have an associated dialog.</p> 2880 * 2881 * @param id The id of the managed dialog. 2882 * 2883 * @see #onCreateDialog(int, Bundle) 2884 * @see #onPrepareDialog(int, Dialog, Bundle) 2885 * @see #showDialog(int) 2886 * @see #dismissDialog(int) 2887 */ 2888 public final void removeDialog(int id) { 2889 if (mManagedDialogs != null) { 2890 final ManagedDialog md = mManagedDialogs.get(id); 2891 if (md != null) { 2892 md.mDialog.dismiss(); 2893 mManagedDialogs.remove(id); 2894 } 2895 } 2896 } 2897 2898 /** 2899 * This hook is called when the user signals the desire to start a search. 2900 * 2901 * <p>You can use this function as a simple way to launch the search UI, in response to a 2902 * menu item, search button, or other widgets within your activity. Unless overidden, 2903 * calling this function is the same as calling 2904 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2905 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2906 * 2907 * <p>You can override this function to force global search, e.g. in response to a dedicated 2908 * search key, or to block search entirely (by simply returning false). 2909 * 2910 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2911 * The default implementation always returns {@code true}. 2912 * 2913 * @see android.app.SearchManager 2914 */ 2915 public boolean onSearchRequested() { 2916 startSearch(null, false, null, false); 2917 return true; 2918 } 2919 2920 /** 2921 * This hook is called to launch the search UI. 2922 * 2923 * <p>It is typically called from onSearchRequested(), either directly from 2924 * Activity.onSearchRequested() or from an overridden version in any given 2925 * Activity. If your goal is simply to activate search, it is preferred to call 2926 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2927 * is to inject specific data such as context data, it is preferred to <i>override</i> 2928 * onSearchRequested(), so that any callers to it will benefit from the override. 2929 * 2930 * @param initialQuery Any non-null non-empty string will be inserted as 2931 * pre-entered text in the search query box. 2932 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2933 * any further typing will replace it. This is useful for cases where an entire pre-formed 2934 * query is being inserted. If false, the selection point will be placed at the end of the 2935 * inserted query. This is useful when the inserted query is text that the user entered, 2936 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 2937 * if initialQuery is a non-empty string.</i> 2938 * @param appSearchData An application can insert application-specific 2939 * context here, in order to improve quality or specificity of its own 2940 * searches. This data will be returned with SEARCH intent(s). Null if 2941 * no extra data is required. 2942 * @param globalSearch If false, this will only launch the search that has been specifically 2943 * defined by the application (which is usually defined as a local search). If no default 2944 * search is defined in the current application or activity, global search will be launched. 2945 * If true, this will always launch a platform-global (e.g. web-based) search instead. 2946 * 2947 * @see android.app.SearchManager 2948 * @see #onSearchRequested 2949 */ 2950 public void startSearch(String initialQuery, boolean selectInitialQuery, 2951 Bundle appSearchData, boolean globalSearch) { 2952 ensureSearchManager(); 2953 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 2954 appSearchData, globalSearch); 2955 } 2956 2957 /** 2958 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 2959 * the search dialog. Made available for testing purposes. 2960 * 2961 * @param query The query to trigger. If empty, the request will be ignored. 2962 * @param appSearchData An application can insert application-specific 2963 * context here, in order to improve quality or specificity of its own 2964 * searches. This data will be returned with SEARCH intent(s). Null if 2965 * no extra data is required. 2966 */ 2967 public void triggerSearch(String query, Bundle appSearchData) { 2968 ensureSearchManager(); 2969 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 2970 } 2971 2972 /** 2973 * Request that key events come to this activity. Use this if your 2974 * activity has no views with focus, but the activity still wants 2975 * a chance to process key events. 2976 * 2977 * @see android.view.Window#takeKeyEvents 2978 */ 2979 public void takeKeyEvents(boolean get) { 2980 getWindow().takeKeyEvents(get); 2981 } 2982 2983 /** 2984 * Enable extended window features. This is a convenience for calling 2985 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 2986 * 2987 * @param featureId The desired feature as defined in 2988 * {@link android.view.Window}. 2989 * @return Returns true if the requested feature is supported and now 2990 * enabled. 2991 * 2992 * @see android.view.Window#requestFeature 2993 */ 2994 public final boolean requestWindowFeature(int featureId) { 2995 return getWindow().requestFeature(featureId); 2996 } 2997 2998 /** 2999 * Convenience for calling 3000 * {@link android.view.Window#setFeatureDrawableResource}. 3001 */ 3002 public final void setFeatureDrawableResource(int featureId, int resId) { 3003 getWindow().setFeatureDrawableResource(featureId, resId); 3004 } 3005 3006 /** 3007 * Convenience for calling 3008 * {@link android.view.Window#setFeatureDrawableUri}. 3009 */ 3010 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3011 getWindow().setFeatureDrawableUri(featureId, uri); 3012 } 3013 3014 /** 3015 * Convenience for calling 3016 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3017 */ 3018 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3019 getWindow().setFeatureDrawable(featureId, drawable); 3020 } 3021 3022 /** 3023 * Convenience for calling 3024 * {@link android.view.Window#setFeatureDrawableAlpha}. 3025 */ 3026 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3027 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3028 } 3029 3030 /** 3031 * Convenience for calling 3032 * {@link android.view.Window#getLayoutInflater}. 3033 */ 3034 public LayoutInflater getLayoutInflater() { 3035 return getWindow().getLayoutInflater(); 3036 } 3037 3038 /** 3039 * Returns a {@link MenuInflater} with this context. 3040 */ 3041 public MenuInflater getMenuInflater() { 3042 return new MenuInflater(this); 3043 } 3044 3045 @Override 3046 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3047 boolean first) { 3048 if (mParent == null) { 3049 super.onApplyThemeResource(theme, resid, first); 3050 } else { 3051 try { 3052 theme.setTo(mParent.getTheme()); 3053 } catch (Exception e) { 3054 // Empty 3055 } 3056 theme.applyStyle(resid, false); 3057 } 3058 } 3059 3060 /** 3061 * Launch an activity for which you would like a result when it finished. 3062 * When this activity exits, your 3063 * onActivityResult() method will be called with the given requestCode. 3064 * Using a negative requestCode is the same as calling 3065 * {@link #startActivity} (the activity is not launched as a sub-activity). 3066 * 3067 * <p>Note that this method should only be used with Intent protocols 3068 * that are defined to return a result. In other protocols (such as 3069 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3070 * not get the result when you expect. For example, if the activity you 3071 * are launching uses the singleTask launch mode, it will not run in your 3072 * task and thus you will immediately receive a cancel result. 3073 * 3074 * <p>As a special case, if you call startActivityForResult() with a requestCode 3075 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3076 * activity, then your window will not be displayed until a result is 3077 * returned back from the started activity. This is to avoid visible 3078 * flickering when redirecting to another activity. 3079 * 3080 * <p>This method throws {@link android.content.ActivityNotFoundException} 3081 * if there was no Activity found to run the given Intent. 3082 * 3083 * @param intent The intent to start. 3084 * @param requestCode If >= 0, this code will be returned in 3085 * onActivityResult() when the activity exits. 3086 * 3087 * @throws android.content.ActivityNotFoundException 3088 * 3089 * @see #startActivity 3090 */ 3091 public void startActivityForResult(Intent intent, int requestCode) { 3092 if (mParent == null) { 3093 Instrumentation.ActivityResult ar = 3094 mInstrumentation.execStartActivity( 3095 this, mMainThread.getApplicationThread(), mToken, this, 3096 intent, requestCode); 3097 if (ar != null) { 3098 mMainThread.sendActivityResult( 3099 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3100 ar.getResultData()); 3101 } 3102 if (requestCode >= 0) { 3103 // If this start is requesting a result, we can avoid making 3104 // the activity visible until the result is received. Setting 3105 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3106 // activity hidden during this time, to avoid flickering. 3107 // This can only be done when a result is requested because 3108 // that guarantees we will get information back when the 3109 // activity is finished, no matter what happens to it. 3110 mStartedActivity = true; 3111 } 3112 } else { 3113 mParent.startActivityFromChild(this, intent, requestCode); 3114 } 3115 } 3116 3117 /** 3118 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3119 * to use a IntentSender to describe the activity to be started. If 3120 * the IntentSender is for an activity, that activity will be started 3121 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3122 * here; otherwise, its associated action will be executed (such as 3123 * sending a broadcast) as if you had called 3124 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3125 * 3126 * @param intent The IntentSender to launch. 3127 * @param requestCode If >= 0, this code will be returned in 3128 * onActivityResult() when the activity exits. 3129 * @param fillInIntent If non-null, this will be provided as the 3130 * intent parameter to {@link IntentSender#sendIntent}. 3131 * @param flagsMask Intent flags in the original IntentSender that you 3132 * would like to change. 3133 * @param flagsValues Desired values for any bits set in 3134 * <var>flagsMask</var> 3135 * @param extraFlags Always set to 0. 3136 */ 3137 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3138 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3139 throws IntentSender.SendIntentException { 3140 if (mParent == null) { 3141 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3142 flagsMask, flagsValues, this); 3143 } else { 3144 mParent.startIntentSenderFromChild(this, intent, requestCode, 3145 fillInIntent, flagsMask, flagsValues, extraFlags); 3146 } 3147 } 3148 3149 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3150 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3151 throws IntentSender.SendIntentException { 3152 try { 3153 String resolvedType = null; 3154 if (fillInIntent != null) { 3155 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3156 } 3157 int result = ActivityManagerNative.getDefault() 3158 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3159 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3160 requestCode, flagsMask, flagsValues); 3161 if (result == IActivityManager.START_CANCELED) { 3162 throw new IntentSender.SendIntentException(); 3163 } 3164 Instrumentation.checkStartActivityResult(result, null); 3165 } catch (RemoteException e) { 3166 } 3167 if (requestCode >= 0) { 3168 // If this start is requesting a result, we can avoid making 3169 // the activity visible until the result is received. Setting 3170 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3171 // activity hidden during this time, to avoid flickering. 3172 // This can only be done when a result is requested because 3173 // that guarantees we will get information back when the 3174 // activity is finished, no matter what happens to it. 3175 mStartedActivity = true; 3176 } 3177 } 3178 3179 /** 3180 * Launch a new activity. You will not receive any information about when 3181 * the activity exits. This implementation overrides the base version, 3182 * providing information about 3183 * the activity performing the launch. Because of this additional 3184 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3185 * required; if not specified, the new activity will be added to the 3186 * task of the caller. 3187 * 3188 * <p>This method throws {@link android.content.ActivityNotFoundException} 3189 * if there was no Activity found to run the given Intent. 3190 * 3191 * @param intent The intent to start. 3192 * 3193 * @throws android.content.ActivityNotFoundException 3194 * 3195 * @see #startActivityForResult 3196 */ 3197 @Override 3198 public void startActivity(Intent intent) { 3199 startActivityForResult(intent, -1); 3200 } 3201 3202 /** 3203 * Launch a new activity. You will not receive any information about when 3204 * the activity exits. This implementation overrides the base version, 3205 * providing information about 3206 * the activity performing the launch. Because of this additional 3207 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3208 * required; if not specified, the new activity will be added to the 3209 * task of the caller. 3210 * 3211 * <p>This method throws {@link android.content.ActivityNotFoundException} 3212 * if there was no Activity found to run the given Intent. 3213 * 3214 * @param intents The intents to start. 3215 * 3216 * @throws android.content.ActivityNotFoundException 3217 * 3218 * @see #startActivityForResult 3219 */ 3220 @Override 3221 public void startActivities(Intent[] intents) { 3222 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3223 mToken, this, intents); 3224 } 3225 3226 /** 3227 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3228 * to start; see 3229 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3230 * for more information. 3231 * 3232 * @param intent The IntentSender to launch. 3233 * @param fillInIntent If non-null, this will be provided as the 3234 * intent parameter to {@link IntentSender#sendIntent}. 3235 * @param flagsMask Intent flags in the original IntentSender that you 3236 * would like to change. 3237 * @param flagsValues Desired values for any bits set in 3238 * <var>flagsMask</var> 3239 * @param extraFlags Always set to 0. 3240 */ 3241 public void startIntentSender(IntentSender intent, 3242 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3243 throws IntentSender.SendIntentException { 3244 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3245 flagsValues, extraFlags); 3246 } 3247 3248 /** 3249 * A special variation to launch an activity only if a new activity 3250 * instance is needed to handle the given Intent. In other words, this is 3251 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3252 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3253 * singleTask or singleTop 3254 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3255 * and the activity 3256 * that handles <var>intent</var> is the same as your currently running 3257 * activity, then a new instance is not needed. In this case, instead of 3258 * the normal behavior of calling {@link #onNewIntent} this function will 3259 * return and you can handle the Intent yourself. 3260 * 3261 * <p>This function can only be called from a top-level activity; if it is 3262 * called from a child activity, a runtime exception will be thrown. 3263 * 3264 * @param intent The intent to start. 3265 * @param requestCode If >= 0, this code will be returned in 3266 * onActivityResult() when the activity exits, as described in 3267 * {@link #startActivityForResult}. 3268 * 3269 * @return If a new activity was launched then true is returned; otherwise 3270 * false is returned and you must handle the Intent yourself. 3271 * 3272 * @see #startActivity 3273 * @see #startActivityForResult 3274 */ 3275 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3276 if (mParent == null) { 3277 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3278 try { 3279 result = ActivityManagerNative.getDefault() 3280 .startActivity(mMainThread.getApplicationThread(), 3281 intent, intent.resolveTypeIfNeeded( 3282 getContentResolver()), 3283 null, 0, 3284 mToken, mEmbeddedID, requestCode, true, false); 3285 } catch (RemoteException e) { 3286 // Empty 3287 } 3288 3289 Instrumentation.checkStartActivityResult(result, intent); 3290 3291 if (requestCode >= 0) { 3292 // If this start is requesting a result, we can avoid making 3293 // the activity visible until the result is received. Setting 3294 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3295 // activity hidden during this time, to avoid flickering. 3296 // This can only be done when a result is requested because 3297 // that guarantees we will get information back when the 3298 // activity is finished, no matter what happens to it. 3299 mStartedActivity = true; 3300 } 3301 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3302 } 3303 3304 throw new UnsupportedOperationException( 3305 "startActivityIfNeeded can only be called from a top-level activity"); 3306 } 3307 3308 /** 3309 * Special version of starting an activity, for use when you are replacing 3310 * other activity components. You can use this to hand the Intent off 3311 * to the next Activity that can handle it. You typically call this in 3312 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3313 * 3314 * @param intent The intent to dispatch to the next activity. For 3315 * correct behavior, this must be the same as the Intent that started 3316 * your own activity; the only changes you can make are to the extras 3317 * inside of it. 3318 * 3319 * @return Returns a boolean indicating whether there was another Activity 3320 * to start: true if there was a next activity to start, false if there 3321 * wasn't. In general, if true is returned you will then want to call 3322 * finish() on yourself. 3323 */ 3324 public boolean startNextMatchingActivity(Intent intent) { 3325 if (mParent == null) { 3326 try { 3327 return ActivityManagerNative.getDefault() 3328 .startNextMatchingActivity(mToken, intent); 3329 } catch (RemoteException e) { 3330 // Empty 3331 } 3332 return false; 3333 } 3334 3335 throw new UnsupportedOperationException( 3336 "startNextMatchingActivity can only be called from a top-level activity"); 3337 } 3338 3339 /** 3340 * This is called when a child activity of this one calls its 3341 * {@link #startActivity} or {@link #startActivityForResult} method. 3342 * 3343 * <p>This method throws {@link android.content.ActivityNotFoundException} 3344 * if there was no Activity found to run the given Intent. 3345 * 3346 * @param child The activity making the call. 3347 * @param intent The intent to start. 3348 * @param requestCode Reply request code. < 0 if reply is not requested. 3349 * 3350 * @throws android.content.ActivityNotFoundException 3351 * 3352 * @see #startActivity 3353 * @see #startActivityForResult 3354 */ 3355 public void startActivityFromChild(Activity child, Intent intent, 3356 int requestCode) { 3357 Instrumentation.ActivityResult ar = 3358 mInstrumentation.execStartActivity( 3359 this, mMainThread.getApplicationThread(), mToken, child, 3360 intent, requestCode); 3361 if (ar != null) { 3362 mMainThread.sendActivityResult( 3363 mToken, child.mEmbeddedID, requestCode, 3364 ar.getResultCode(), ar.getResultData()); 3365 } 3366 } 3367 3368 /** 3369 * This is called when a Fragment in this activity calls its 3370 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3371 * method. 3372 * 3373 * <p>This method throws {@link android.content.ActivityNotFoundException} 3374 * if there was no Activity found to run the given Intent. 3375 * 3376 * @param fragment The fragment making the call. 3377 * @param intent The intent to start. 3378 * @param requestCode Reply request code. < 0 if reply is not requested. 3379 * 3380 * @throws android.content.ActivityNotFoundException 3381 * 3382 * @see Fragment#startActivity 3383 * @see Fragment#startActivityForResult 3384 */ 3385 public void startActivityFromFragment(Fragment fragment, Intent intent, 3386 int requestCode) { 3387 Instrumentation.ActivityResult ar = 3388 mInstrumentation.execStartActivity( 3389 this, mMainThread.getApplicationThread(), mToken, fragment, 3390 intent, requestCode); 3391 if (ar != null) { 3392 mMainThread.sendActivityResult( 3393 mToken, fragment.mWho, requestCode, 3394 ar.getResultCode(), ar.getResultData()); 3395 } 3396 } 3397 3398 /** 3399 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3400 * taking a IntentSender; see 3401 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3402 * for more information. 3403 */ 3404 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3405 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3406 int extraFlags) 3407 throws IntentSender.SendIntentException { 3408 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3409 flagsMask, flagsValues, child); 3410 } 3411 3412 /** 3413 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3414 * or {@link #finish} to specify an explicit transition animation to 3415 * perform next. 3416 * @param enterAnim A resource ID of the animation resource to use for 3417 * the incoming activity. Use 0 for no animation. 3418 * @param exitAnim A resource ID of the animation resource to use for 3419 * the outgoing activity. Use 0 for no animation. 3420 */ 3421 public void overridePendingTransition(int enterAnim, int exitAnim) { 3422 try { 3423 ActivityManagerNative.getDefault().overridePendingTransition( 3424 mToken, getPackageName(), enterAnim, exitAnim); 3425 } catch (RemoteException e) { 3426 } 3427 } 3428 3429 /** 3430 * Call this to set the result that your activity will return to its 3431 * caller. 3432 * 3433 * @param resultCode The result code to propagate back to the originating 3434 * activity, often RESULT_CANCELED or RESULT_OK 3435 * 3436 * @see #RESULT_CANCELED 3437 * @see #RESULT_OK 3438 * @see #RESULT_FIRST_USER 3439 * @see #setResult(int, Intent) 3440 */ 3441 public final void setResult(int resultCode) { 3442 synchronized (this) { 3443 mResultCode = resultCode; 3444 mResultData = null; 3445 } 3446 } 3447 3448 /** 3449 * Call this to set the result that your activity will return to its 3450 * caller. 3451 * 3452 * @param resultCode The result code to propagate back to the originating 3453 * activity, often RESULT_CANCELED or RESULT_OK 3454 * @param data The data to propagate back to the originating activity. 3455 * 3456 * @see #RESULT_CANCELED 3457 * @see #RESULT_OK 3458 * @see #RESULT_FIRST_USER 3459 * @see #setResult(int) 3460 */ 3461 public final void setResult(int resultCode, Intent data) { 3462 synchronized (this) { 3463 mResultCode = resultCode; 3464 mResultData = data; 3465 } 3466 } 3467 3468 /** 3469 * Return the name of the package that invoked this activity. This is who 3470 * the data in {@link #setResult setResult()} will be sent to. You can 3471 * use this information to validate that the recipient is allowed to 3472 * receive the data. 3473 * 3474 * <p>Note: if the calling activity is not expecting a result (that is it 3475 * did not use the {@link #startActivityForResult} 3476 * form that includes a request code), then the calling package will be 3477 * null. 3478 * 3479 * @return The package of the activity that will receive your 3480 * reply, or null if none. 3481 */ 3482 public String getCallingPackage() { 3483 try { 3484 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3485 } catch (RemoteException e) { 3486 return null; 3487 } 3488 } 3489 3490 /** 3491 * Return the name of the activity that invoked this activity. This is 3492 * who the data in {@link #setResult setResult()} will be sent to. You 3493 * can use this information to validate that the recipient is allowed to 3494 * receive the data. 3495 * 3496 * <p>Note: if the calling activity is not expecting a result (that is it 3497 * did not use the {@link #startActivityForResult} 3498 * form that includes a request code), then the calling package will be 3499 * null. 3500 * 3501 * @return String The full name of the activity that will receive your 3502 * reply, or null if none. 3503 */ 3504 public ComponentName getCallingActivity() { 3505 try { 3506 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3507 } catch (RemoteException e) { 3508 return null; 3509 } 3510 } 3511 3512 /** 3513 * Control whether this activity's main window is visible. This is intended 3514 * only for the special case of an activity that is not going to show a 3515 * UI itself, but can't just finish prior to onResume() because it needs 3516 * to wait for a service binding or such. Setting this to false allows 3517 * you to prevent your UI from being shown during that time. 3518 * 3519 * <p>The default value for this is taken from the 3520 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3521 */ 3522 public void setVisible(boolean visible) { 3523 if (mVisibleFromClient != visible) { 3524 mVisibleFromClient = visible; 3525 if (mVisibleFromServer) { 3526 if (visible) makeVisible(); 3527 else mDecor.setVisibility(View.INVISIBLE); 3528 } 3529 } 3530 } 3531 3532 void makeVisible() { 3533 if (!mWindowAdded) { 3534 ViewManager wm = getWindowManager(); 3535 wm.addView(mDecor, getWindow().getAttributes()); 3536 mWindowAdded = true; 3537 } 3538 mDecor.setVisibility(View.VISIBLE); 3539 } 3540 3541 /** 3542 * Check to see whether this activity is in the process of finishing, 3543 * either because you called {@link #finish} on it or someone else 3544 * has requested that it finished. This is often used in 3545 * {@link #onPause} to determine whether the activity is simply pausing or 3546 * completely finishing. 3547 * 3548 * @return If the activity is finishing, returns true; else returns false. 3549 * 3550 * @see #finish 3551 */ 3552 public boolean isFinishing() { 3553 return mFinished; 3554 } 3555 3556 /** 3557 * Check to see whether this activity is in the process of being destroyed in order to be 3558 * recreated with a new configuration. This is often used in 3559 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3560 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3561 * 3562 * @return If the activity is being torn down in order to be recreated with a new configuration, 3563 * returns true; else returns false. 3564 */ 3565 public boolean isChangingConfigurations() { 3566 return mChangingConfigurations; 3567 } 3568 3569 /** 3570 * Cause this Activity to be recreated with a new instance. This results 3571 * in essentially the same flow as when the Activity is created due to 3572 * a configuration change -- the current instance will go through its 3573 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3574 */ 3575 public void recreate() { 3576 if (mParent != null) { 3577 throw new IllegalStateException("Can only be called on top-level activity"); 3578 } 3579 if (Looper.myLooper() != mMainThread.getLooper()) { 3580 throw new IllegalStateException("Must be called from main thread"); 3581 } 3582 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3583 } 3584 3585 /** 3586 * Call this when your activity is done and should be closed. The 3587 * ActivityResult is propagated back to whoever launched you via 3588 * onActivityResult(). 3589 */ 3590 public void finish() { 3591 if (mParent == null) { 3592 int resultCode; 3593 Intent resultData; 3594 synchronized (this) { 3595 resultCode = mResultCode; 3596 resultData = mResultData; 3597 } 3598 if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken); 3599 try { 3600 if (ActivityManagerNative.getDefault() 3601 .finishActivity(mToken, resultCode, resultData)) { 3602 mFinished = true; 3603 } 3604 } catch (RemoteException e) { 3605 // Empty 3606 } 3607 } else { 3608 mParent.finishFromChild(this); 3609 } 3610 } 3611 3612 /** 3613 * This is called when a child activity of this one calls its 3614 * {@link #finish} method. The default implementation simply calls 3615 * finish() on this activity (the parent), finishing the entire group. 3616 * 3617 * @param child The activity making the call. 3618 * 3619 * @see #finish 3620 */ 3621 public void finishFromChild(Activity child) { 3622 finish(); 3623 } 3624 3625 /** 3626 * Force finish another activity that you had previously started with 3627 * {@link #startActivityForResult}. 3628 * 3629 * @param requestCode The request code of the activity that you had 3630 * given to startActivityForResult(). If there are multiple 3631 * activities started with this request code, they 3632 * will all be finished. 3633 */ 3634 public void finishActivity(int requestCode) { 3635 if (mParent == null) { 3636 try { 3637 ActivityManagerNative.getDefault() 3638 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3639 } catch (RemoteException e) { 3640 // Empty 3641 } 3642 } else { 3643 mParent.finishActivityFromChild(this, requestCode); 3644 } 3645 } 3646 3647 /** 3648 * This is called when a child activity of this one calls its 3649 * finishActivity(). 3650 * 3651 * @param child The activity making the call. 3652 * @param requestCode Request code that had been used to start the 3653 * activity. 3654 */ 3655 public void finishActivityFromChild(Activity child, int requestCode) { 3656 try { 3657 ActivityManagerNative.getDefault() 3658 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3659 } catch (RemoteException e) { 3660 // Empty 3661 } 3662 } 3663 3664 /** 3665 * Called when an activity you launched exits, giving you the requestCode 3666 * you started it with, the resultCode it returned, and any additional 3667 * data from it. The <var>resultCode</var> will be 3668 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3669 * didn't return any result, or crashed during its operation. 3670 * 3671 * <p>You will receive this call immediately before onResume() when your 3672 * activity is re-starting. 3673 * 3674 * @param requestCode The integer request code originally supplied to 3675 * startActivityForResult(), allowing you to identify who this 3676 * result came from. 3677 * @param resultCode The integer result code returned by the child activity 3678 * through its setResult(). 3679 * @param data An Intent, which can return result data to the caller 3680 * (various data can be attached to Intent "extras"). 3681 * 3682 * @see #startActivityForResult 3683 * @see #createPendingResult 3684 * @see #setResult(int) 3685 */ 3686 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3687 } 3688 3689 /** 3690 * Create a new PendingIntent object which you can hand to others 3691 * for them to use to send result data back to your 3692 * {@link #onActivityResult} callback. The created object will be either 3693 * one-shot (becoming invalid after a result is sent back) or multiple 3694 * (allowing any number of results to be sent through it). 3695 * 3696 * @param requestCode Private request code for the sender that will be 3697 * associated with the result data when it is returned. The sender can not 3698 * modify this value, allowing you to identify incoming results. 3699 * @param data Default data to supply in the result, which may be modified 3700 * by the sender. 3701 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3702 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3703 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3704 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3705 * or any of the flags as supported by 3706 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3707 * of the intent that can be supplied when the actual send happens. 3708 * 3709 * @return Returns an existing or new PendingIntent matching the given 3710 * parameters. May return null only if 3711 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3712 * supplied. 3713 * 3714 * @see PendingIntent 3715 */ 3716 public PendingIntent createPendingResult(int requestCode, Intent data, 3717 int flags) { 3718 String packageName = getPackageName(); 3719 try { 3720 IIntentSender target = 3721 ActivityManagerNative.getDefault().getIntentSender( 3722 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3723 mParent == null ? mToken : mParent.mToken, 3724 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3725 return target != null ? new PendingIntent(target) : null; 3726 } catch (RemoteException e) { 3727 // Empty 3728 } 3729 return null; 3730 } 3731 3732 /** 3733 * Change the desired orientation of this activity. If the activity 3734 * is currently in the foreground or otherwise impacting the screen 3735 * orientation, the screen will immediately be changed (possibly causing 3736 * the activity to be restarted). Otherwise, this will be used the next 3737 * time the activity is visible. 3738 * 3739 * @param requestedOrientation An orientation constant as used in 3740 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3741 */ 3742 public void setRequestedOrientation(int requestedOrientation) { 3743 if (mParent == null) { 3744 try { 3745 ActivityManagerNative.getDefault().setRequestedOrientation( 3746 mToken, requestedOrientation); 3747 } catch (RemoteException e) { 3748 // Empty 3749 } 3750 } else { 3751 mParent.setRequestedOrientation(requestedOrientation); 3752 } 3753 } 3754 3755 /** 3756 * Return the current requested orientation of the activity. This will 3757 * either be the orientation requested in its component's manifest, or 3758 * the last requested orientation given to 3759 * {@link #setRequestedOrientation(int)}. 3760 * 3761 * @return Returns an orientation constant as used in 3762 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3763 */ 3764 public int getRequestedOrientation() { 3765 if (mParent == null) { 3766 try { 3767 return ActivityManagerNative.getDefault() 3768 .getRequestedOrientation(mToken); 3769 } catch (RemoteException e) { 3770 // Empty 3771 } 3772 } else { 3773 return mParent.getRequestedOrientation(); 3774 } 3775 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3776 } 3777 3778 /** 3779 * Return the identifier of the task this activity is in. This identifier 3780 * will remain the same for the lifetime of the activity. 3781 * 3782 * @return Task identifier, an opaque integer. 3783 */ 3784 public int getTaskId() { 3785 try { 3786 return ActivityManagerNative.getDefault() 3787 .getTaskForActivity(mToken, false); 3788 } catch (RemoteException e) { 3789 return -1; 3790 } 3791 } 3792 3793 /** 3794 * Return whether this activity is the root of a task. The root is the 3795 * first activity in a task. 3796 * 3797 * @return True if this is the root activity, else false. 3798 */ 3799 public boolean isTaskRoot() { 3800 try { 3801 return ActivityManagerNative.getDefault() 3802 .getTaskForActivity(mToken, true) >= 0; 3803 } catch (RemoteException e) { 3804 return false; 3805 } 3806 } 3807 3808 /** 3809 * Move the task containing this activity to the back of the activity 3810 * stack. The activity's order within the task is unchanged. 3811 * 3812 * @param nonRoot If false then this only works if the activity is the root 3813 * of a task; if true it will work for any activity in 3814 * a task. 3815 * 3816 * @return If the task was moved (or it was already at the 3817 * back) true is returned, else false. 3818 */ 3819 public boolean moveTaskToBack(boolean nonRoot) { 3820 try { 3821 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3822 mToken, nonRoot); 3823 } catch (RemoteException e) { 3824 // Empty 3825 } 3826 return false; 3827 } 3828 3829 /** 3830 * Returns class name for this activity with the package prefix removed. 3831 * This is the default name used to read and write settings. 3832 * 3833 * @return The local class name. 3834 */ 3835 public String getLocalClassName() { 3836 final String pkg = getPackageName(); 3837 final String cls = mComponent.getClassName(); 3838 int packageLen = pkg.length(); 3839 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3840 || cls.charAt(packageLen) != '.') { 3841 return cls; 3842 } 3843 return cls.substring(packageLen+1); 3844 } 3845 3846 /** 3847 * Returns complete component name of this activity. 3848 * 3849 * @return Returns the complete component name for this activity 3850 */ 3851 public ComponentName getComponentName() 3852 { 3853 return mComponent; 3854 } 3855 3856 /** 3857 * Retrieve a {@link SharedPreferences} object for accessing preferences 3858 * that are private to this activity. This simply calls the underlying 3859 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3860 * class name as the preferences name. 3861 * 3862 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3863 * operation, {@link #MODE_WORLD_READABLE} and 3864 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3865 * 3866 * @return Returns the single SharedPreferences instance that can be used 3867 * to retrieve and modify the preference values. 3868 */ 3869 public SharedPreferences getPreferences(int mode) { 3870 return getSharedPreferences(getLocalClassName(), mode); 3871 } 3872 3873 private void ensureSearchManager() { 3874 if (mSearchManager != null) { 3875 return; 3876 } 3877 3878 mSearchManager = new SearchManager(this, null); 3879 } 3880 3881 @Override 3882 public Object getSystemService(String name) { 3883 if (getBaseContext() == null) { 3884 throw new IllegalStateException( 3885 "System services not available to Activities before onCreate()"); 3886 } 3887 3888 if (WINDOW_SERVICE.equals(name)) { 3889 return mWindowManager; 3890 } else if (SEARCH_SERVICE.equals(name)) { 3891 ensureSearchManager(); 3892 return mSearchManager; 3893 } 3894 return super.getSystemService(name); 3895 } 3896 3897 /** 3898 * Change the title associated with this activity. If this is a 3899 * top-level activity, the title for its window will change. If it 3900 * is an embedded activity, the parent can do whatever it wants 3901 * with it. 3902 */ 3903 public void setTitle(CharSequence title) { 3904 mTitle = title; 3905 onTitleChanged(title, mTitleColor); 3906 3907 if (mParent != null) { 3908 mParent.onChildTitleChanged(this, title); 3909 } 3910 } 3911 3912 /** 3913 * Change the title associated with this activity. If this is a 3914 * top-level activity, the title for its window will change. If it 3915 * is an embedded activity, the parent can do whatever it wants 3916 * with it. 3917 */ 3918 public void setTitle(int titleId) { 3919 setTitle(getText(titleId)); 3920 } 3921 3922 public void setTitleColor(int textColor) { 3923 mTitleColor = textColor; 3924 onTitleChanged(mTitle, textColor); 3925 } 3926 3927 public final CharSequence getTitle() { 3928 return mTitle; 3929 } 3930 3931 public final int getTitleColor() { 3932 return mTitleColor; 3933 } 3934 3935 protected void onTitleChanged(CharSequence title, int color) { 3936 if (mTitleReady) { 3937 final Window win = getWindow(); 3938 if (win != null) { 3939 win.setTitle(title); 3940 if (color != 0) { 3941 win.setTitleColor(color); 3942 } 3943 } 3944 } 3945 } 3946 3947 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 3948 } 3949 3950 /** 3951 * Sets the visibility of the progress bar in the title. 3952 * <p> 3953 * In order for the progress bar to be shown, the feature must be requested 3954 * via {@link #requestWindowFeature(int)}. 3955 * 3956 * @param visible Whether to show the progress bars in the title. 3957 */ 3958 public final void setProgressBarVisibility(boolean visible) { 3959 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 3960 Window.PROGRESS_VISIBILITY_OFF); 3961 } 3962 3963 /** 3964 * Sets the visibility of the indeterminate progress bar in the title. 3965 * <p> 3966 * In order for the progress bar to be shown, the feature must be requested 3967 * via {@link #requestWindowFeature(int)}. 3968 * 3969 * @param visible Whether to show the progress bars in the title. 3970 */ 3971 public final void setProgressBarIndeterminateVisibility(boolean visible) { 3972 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 3973 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 3974 } 3975 3976 /** 3977 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 3978 * is always indeterminate). 3979 * <p> 3980 * In order for the progress bar to be shown, the feature must be requested 3981 * via {@link #requestWindowFeature(int)}. 3982 * 3983 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 3984 */ 3985 public final void setProgressBarIndeterminate(boolean indeterminate) { 3986 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 3987 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 3988 } 3989 3990 /** 3991 * Sets the progress for the progress bars in the title. 3992 * <p> 3993 * In order for the progress bar to be shown, the feature must be requested 3994 * via {@link #requestWindowFeature(int)}. 3995 * 3996 * @param progress The progress for the progress bar. Valid ranges are from 3997 * 0 to 10000 (both inclusive). If 10000 is given, the progress 3998 * bar will be completely filled and will fade out. 3999 */ 4000 public final void setProgress(int progress) { 4001 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4002 } 4003 4004 /** 4005 * Sets the secondary progress for the progress bar in the title. This 4006 * progress is drawn between the primary progress (set via 4007 * {@link #setProgress(int)} and the background. It can be ideal for media 4008 * scenarios such as showing the buffering progress while the default 4009 * progress shows the play progress. 4010 * <p> 4011 * In order for the progress bar to be shown, the feature must be requested 4012 * via {@link #requestWindowFeature(int)}. 4013 * 4014 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4015 * 0 to 10000 (both inclusive). 4016 */ 4017 public final void setSecondaryProgress(int secondaryProgress) { 4018 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4019 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4020 } 4021 4022 /** 4023 * Suggests an audio stream whose volume should be changed by the hardware 4024 * volume controls. 4025 * <p> 4026 * The suggested audio stream will be tied to the window of this Activity. 4027 * If the Activity is switched, the stream set here is no longer the 4028 * suggested stream. The client does not need to save and restore the old 4029 * suggested stream value in onPause and onResume. 4030 * 4031 * @param streamType The type of the audio stream whose volume should be 4032 * changed by the hardware volume controls. It is not guaranteed that 4033 * the hardware volume controls will always change this stream's 4034 * volume (for example, if a call is in progress, its stream's volume 4035 * may be changed instead). To reset back to the default, use 4036 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4037 */ 4038 public final void setVolumeControlStream(int streamType) { 4039 getWindow().setVolumeControlStream(streamType); 4040 } 4041 4042 /** 4043 * Gets the suggested audio stream whose volume should be changed by the 4044 * harwdare volume controls. 4045 * 4046 * @return The suggested audio stream type whose volume should be changed by 4047 * the hardware volume controls. 4048 * @see #setVolumeControlStream(int) 4049 */ 4050 public final int getVolumeControlStream() { 4051 return getWindow().getVolumeControlStream(); 4052 } 4053 4054 /** 4055 * Runs the specified action on the UI thread. If the current thread is the UI 4056 * thread, then the action is executed immediately. If the current thread is 4057 * not the UI thread, the action is posted to the event queue of the UI thread. 4058 * 4059 * @param action the action to run on the UI thread 4060 */ 4061 public final void runOnUiThread(Runnable action) { 4062 if (Thread.currentThread() != mUiThread) { 4063 mHandler.post(action); 4064 } else { 4065 action.run(); 4066 } 4067 } 4068 4069 /** 4070 * Standard implementation of 4071 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4072 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4073 * This implementation does nothing and is for 4074 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4075 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4076 * 4077 * @see android.view.LayoutInflater#createView 4078 * @see android.view.Window#getLayoutInflater 4079 */ 4080 public View onCreateView(String name, Context context, AttributeSet attrs) { 4081 return null; 4082 } 4083 4084 /** 4085 * Standard implementation of 4086 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4087 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4088 * This implementation handles <fragment> tags to embed fragments inside 4089 * of the activity. 4090 * 4091 * @see android.view.LayoutInflater#createView 4092 * @see android.view.Window#getLayoutInflater 4093 */ 4094 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4095 if (!"fragment".equals(name)) { 4096 return onCreateView(name, context, attrs); 4097 } 4098 4099 String fname = attrs.getAttributeValue(null, "class"); 4100 TypedArray a = 4101 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4102 if (fname == null) { 4103 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4104 } 4105 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4106 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4107 a.recycle(); 4108 4109 int containerId = parent != null ? parent.getId() : 0; 4110 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4111 throw new IllegalArgumentException(attrs.getPositionDescription() 4112 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4113 } 4114 4115 // If we restored from a previous state, we may already have 4116 // instantiated this fragment from the state and should use 4117 // that instance instead of making a new one. 4118 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4119 if (fragment == null && tag != null) { 4120 fragment = mFragments.findFragmentByTag(tag); 4121 } 4122 if (fragment == null && containerId != View.NO_ID) { 4123 fragment = mFragments.findFragmentById(containerId); 4124 } 4125 4126 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4127 + Integer.toHexString(id) + " fname=" + fname 4128 + " existing=" + fragment); 4129 if (fragment == null) { 4130 fragment = Fragment.instantiate(this, fname); 4131 fragment.mFromLayout = true; 4132 fragment.mFragmentId = id != 0 ? id : containerId; 4133 fragment.mContainerId = containerId; 4134 fragment.mTag = tag; 4135 fragment.mInLayout = true; 4136 fragment.mImmediateActivity = this; 4137 fragment.mFragmentManager = mFragments; 4138 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4139 mFragments.addFragment(fragment, true); 4140 4141 } else if (fragment.mInLayout) { 4142 // A fragment already exists and it is not one we restored from 4143 // previous state. 4144 throw new IllegalArgumentException(attrs.getPositionDescription() 4145 + ": Duplicate id 0x" + Integer.toHexString(id) 4146 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4147 + " with another fragment for " + fname); 4148 } else { 4149 // This fragment was retained from a previous instance; get it 4150 // going now. 4151 fragment.mInLayout = true; 4152 fragment.mImmediateActivity = this; 4153 // If this fragment is newly instantiated (either right now, or 4154 // from last saved state), then give it the attributes to 4155 // initialize itself. 4156 if (!fragment.mRetaining) { 4157 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4158 } 4159 mFragments.moveToState(fragment); 4160 } 4161 4162 if (fragment.mView == null) { 4163 throw new IllegalStateException("Fragment " + fname 4164 + " did not create a view."); 4165 } 4166 if (id != 0) { 4167 fragment.mView.setId(id); 4168 } 4169 if (fragment.mView.getTag() == null) { 4170 fragment.mView.setTag(tag); 4171 } 4172 return fragment.mView; 4173 } 4174 4175 /** 4176 * Print the Activity's state into the given stream. This gets invoked if 4177 * you run "adb shell dumpsys activity <activity_component_name>". 4178 * 4179 * @param prefix Desired prefix to prepend at each line of output. 4180 * @param fd The raw file descriptor that the dump is being sent to. 4181 * @param writer The PrintWriter to which you should dump your state. This will be 4182 * closed for you after you return. 4183 * @param args additional arguments to the dump request. 4184 */ 4185 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4186 writer.print(prefix); writer.print("Local Activity "); 4187 writer.print(Integer.toHexString(System.identityHashCode(this))); 4188 writer.println(" State:"); 4189 String innerPrefix = prefix + " "; 4190 writer.print(innerPrefix); writer.print("mResumed="); 4191 writer.print(mResumed); writer.print(" mStopped="); 4192 writer.print(mStopped); writer.print(" mFinished="); 4193 writer.println(mFinished); 4194 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4195 writer.println(mLoadersStarted); 4196 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4197 writer.println(mChangingConfigurations); 4198 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4199 writer.println(mCurrentConfig); 4200 if (mLoaderManager != null) { 4201 writer.print(prefix); writer.print("Loader Manager "); 4202 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4203 writer.println(":"); 4204 mLoaderManager.dump(prefix + " ", fd, writer, args); 4205 } 4206 mFragments.dump(prefix, fd, writer, args); 4207 } 4208 4209 /** 4210 * Bit indicating that this activity is "immersive" and should not be 4211 * interrupted by notifications if possible. 4212 * 4213 * This value is initially set by the manifest property 4214 * <code>android:immersive</code> but may be changed at runtime by 4215 * {@link #setImmersive}. 4216 * 4217 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4218 * @hide 4219 */ 4220 public boolean isImmersive() { 4221 try { 4222 return ActivityManagerNative.getDefault().isImmersive(mToken); 4223 } catch (RemoteException e) { 4224 return false; 4225 } 4226 } 4227 4228 /** 4229 * Adjust the current immersive mode setting. 4230 * 4231 * Note that changing this value will have no effect on the activity's 4232 * {@link android.content.pm.ActivityInfo} structure; that is, if 4233 * <code>android:immersive</code> is set to <code>true</code> 4234 * in the application's manifest entry for this activity, the {@link 4235 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4236 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4237 * FLAG_IMMERSIVE} bit set. 4238 * 4239 * @see #isImmersive 4240 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4241 * @hide 4242 */ 4243 public void setImmersive(boolean i) { 4244 try { 4245 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4246 } catch (RemoteException e) { 4247 // pass 4248 } 4249 } 4250 4251 /** 4252 * Start an action mode. 4253 * 4254 * @param callback Callback that will manage lifecycle events for this context mode 4255 * @return The ContextMode that was started, or null if it was canceled 4256 * 4257 * @see ActionMode 4258 */ 4259 public ActionMode startActionMode(ActionMode.Callback callback) { 4260 return mWindow.getDecorView().startActionMode(callback); 4261 } 4262 4263 /** 4264 * Give the Activity a chance to control the UI for an action mode requested 4265 * by the system. 4266 * 4267 * <p>Note: If you are looking for a notification callback that an action mode 4268 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4269 * 4270 * @param callback The callback that should control the new action mode 4271 * @return The new action mode, or <code>null</code> if the activity does not want to 4272 * provide special handling for this action mode. (It will be handled by the system.) 4273 */ 4274 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4275 initActionBar(); 4276 if (mActionBar != null) { 4277 return mActionBar.startActionMode(callback); 4278 } 4279 return null; 4280 } 4281 4282 /** 4283 * Notifies the Activity that an action mode has been started. 4284 * Activity subclasses overriding this method should call the superclass implementation. 4285 * 4286 * @param mode The new action mode. 4287 */ 4288 public void onActionModeStarted(ActionMode mode) { 4289 } 4290 4291 /** 4292 * Notifies the activity that an action mode has finished. 4293 * Activity subclasses overriding this method should call the superclass implementation. 4294 * 4295 * @param mode The action mode that just finished. 4296 */ 4297 public void onActionModeFinished(ActionMode mode) { 4298 } 4299 4300 // ------------------ Internal API ------------------ 4301 4302 final void setParent(Activity parent) { 4303 mParent = parent; 4304 } 4305 4306 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4307 Application application, Intent intent, ActivityInfo info, CharSequence title, 4308 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4309 Configuration config) { 4310 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4311 lastNonConfigurationInstances, config); 4312 } 4313 4314 final void attach(Context context, ActivityThread aThread, 4315 Instrumentation instr, IBinder token, int ident, 4316 Application application, Intent intent, ActivityInfo info, 4317 CharSequence title, Activity parent, String id, 4318 NonConfigurationInstances lastNonConfigurationInstances, 4319 Configuration config) { 4320 attachBaseContext(context); 4321 4322 mFragments.attachActivity(this); 4323 4324 mWindow = PolicyManager.makeNewWindow(this); 4325 mWindow.setCallback(this); 4326 mWindow.getLayoutInflater().setPrivateFactory(this); 4327 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4328 mWindow.setSoftInputMode(info.softInputMode); 4329 } 4330 mUiThread = Thread.currentThread(); 4331 4332 mMainThread = aThread; 4333 mInstrumentation = instr; 4334 mToken = token; 4335 mIdent = ident; 4336 mApplication = application; 4337 mIntent = intent; 4338 mComponent = intent.getComponent(); 4339 mActivityInfo = info; 4340 mTitle = title; 4341 mParent = parent; 4342 mEmbeddedID = id; 4343 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4344 4345 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4346 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4347 if (mParent != null) { 4348 mWindow.setContainer(mParent.getWindow()); 4349 } 4350 mWindowManager = mWindow.getWindowManager(); 4351 mCurrentConfig = config; 4352 } 4353 4354 final IBinder getActivityToken() { 4355 return mParent != null ? mParent.getActivityToken() : mToken; 4356 } 4357 4358 final void performCreate(Bundle icicle) { 4359 onCreate(icicle); 4360 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4361 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4362 mFragments.dispatchActivityCreated(); 4363 } 4364 4365 final void performStart() { 4366 mFragments.noteStateNotSaved(); 4367 mCalled = false; 4368 mFragments.execPendingActions(); 4369 mInstrumentation.callActivityOnStart(this); 4370 if (!mCalled) { 4371 throw new SuperNotCalledException( 4372 "Activity " + mComponent.toShortString() + 4373 " did not call through to super.onStart()"); 4374 } 4375 mFragments.dispatchStart(); 4376 if (mAllLoaderManagers != null) { 4377 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4378 mAllLoaderManagers.valueAt(i).finishRetain(); 4379 } 4380 } 4381 } 4382 4383 final void performRestart() { 4384 mFragments.noteStateNotSaved(); 4385 4386 synchronized (mManagedCursors) { 4387 final int N = mManagedCursors.size(); 4388 for (int i=0; i<N; i++) { 4389 ManagedCursor mc = mManagedCursors.get(i); 4390 if (mc.mReleased || mc.mUpdated) { 4391 if (!mc.mCursor.requery()) { 4392 throw new IllegalStateException( 4393 "trying to requery an already closed cursor"); 4394 } 4395 mc.mReleased = false; 4396 mc.mUpdated = false; 4397 } 4398 } 4399 } 4400 4401 if (mStopped) { 4402 mStopped = false; 4403 mCalled = false; 4404 mInstrumentation.callActivityOnRestart(this); 4405 if (!mCalled) { 4406 throw new SuperNotCalledException( 4407 "Activity " + mComponent.toShortString() + 4408 " did not call through to super.onRestart()"); 4409 } 4410 performStart(); 4411 } 4412 } 4413 4414 final void performResume() { 4415 performRestart(); 4416 4417 mFragments.execPendingActions(); 4418 4419 mLastNonConfigurationInstances = null; 4420 4421 mCalled = false; 4422 // mResumed is set by the instrumentation 4423 mInstrumentation.callActivityOnResume(this); 4424 if (!mCalled) { 4425 throw new SuperNotCalledException( 4426 "Activity " + mComponent.toShortString() + 4427 " did not call through to super.onResume()"); 4428 } 4429 4430 // Now really resume, and install the current status bar and menu. 4431 mCalled = false; 4432 4433 mFragments.dispatchResume(); 4434 mFragments.execPendingActions(); 4435 4436 onPostResume(); 4437 if (!mCalled) { 4438 throw new SuperNotCalledException( 4439 "Activity " + mComponent.toShortString() + 4440 " did not call through to super.onPostResume()"); 4441 } 4442 } 4443 4444 final void performPause() { 4445 mFragments.dispatchPause(); 4446 mCalled = false; 4447 onPause(); 4448 mResumed = false; 4449 if (!mCalled && getApplicationInfo().targetSdkVersion 4450 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4451 throw new SuperNotCalledException( 4452 "Activity " + mComponent.toShortString() + 4453 " did not call through to super.onPause()"); 4454 } 4455 mResumed = false; 4456 } 4457 4458 final void performUserLeaving() { 4459 onUserInteraction(); 4460 onUserLeaveHint(); 4461 } 4462 4463 final void performStop() { 4464 if (mLoadersStarted) { 4465 mLoadersStarted = false; 4466 if (mLoaderManager != null) { 4467 if (!mChangingConfigurations) { 4468 mLoaderManager.doStop(); 4469 } else { 4470 mLoaderManager.doRetain(); 4471 } 4472 } 4473 } 4474 4475 if (!mStopped) { 4476 if (mWindow != null) { 4477 mWindow.closeAllPanels(); 4478 } 4479 4480 mFragments.dispatchStop(); 4481 4482 mCalled = false; 4483 mInstrumentation.callActivityOnStop(this); 4484 if (!mCalled) { 4485 throw new SuperNotCalledException( 4486 "Activity " + mComponent.toShortString() + 4487 " did not call through to super.onStop()"); 4488 } 4489 4490 synchronized (mManagedCursors) { 4491 final int N = mManagedCursors.size(); 4492 for (int i=0; i<N; i++) { 4493 ManagedCursor mc = mManagedCursors.get(i); 4494 if (!mc.mReleased) { 4495 mc.mCursor.deactivate(); 4496 mc.mReleased = true; 4497 } 4498 } 4499 } 4500 4501 mStopped = true; 4502 } 4503 mResumed = false; 4504 4505 // Check for Activity leaks, if enabled. 4506 StrictMode.conditionallyCheckInstanceCounts(); 4507 } 4508 4509 final void performDestroy() { 4510 mWindow.destroy(); 4511 mFragments.dispatchDestroy(); 4512 onDestroy(); 4513 if (mLoaderManager != null) { 4514 mLoaderManager.doDestroy(); 4515 } 4516 } 4517 4518 /** 4519 * @hide 4520 */ 4521 public final boolean isResumed() { 4522 return mResumed; 4523 } 4524 4525 void dispatchActivityResult(String who, int requestCode, 4526 int resultCode, Intent data) { 4527 if (Config.LOGV) Log.v( 4528 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4529 + ", resCode=" + resultCode + ", data=" + data); 4530 mFragments.noteStateNotSaved(); 4531 if (who == null) { 4532 onActivityResult(requestCode, resultCode, data); 4533 } else { 4534 Fragment frag = mFragments.findFragmentByWho(who); 4535 if (frag != null) { 4536 frag.onActivityResult(requestCode, resultCode, data); 4537 } 4538 } 4539 } 4540} 4541