Activity.java revision a1ea2c8457e860ba0637d95dfc2076e77d8f2fe3
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 later 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 are dispatched to the focused view to describe 2126 * the motions of input devices such as joysticks. 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> 2132 * <code> 2133 * public boolean onGenericMotionEvent(MotionEvent event) { 2134 * if ((event.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 2135 * float x = event.getX(); 2136 * float y = event.getY(); 2137 * // process the joystick motion 2138 * return true; 2139 * } 2140 * return super.onGenericMotionEvent(event); 2141 * } 2142 * </code> 2143 * 2144 * @param event The generic motion event being processed. 2145 * 2146 * @return Return true if you have consumed the event, false if you haven't. 2147 * The default implementation always returns false. 2148 */ 2149 public boolean onGenericMotionEvent(MotionEvent event) { 2150 return false; 2151 } 2152 2153 /** 2154 * Called whenever a key, touch, or trackball event is dispatched to the 2155 * activity. Implement this method if you wish to know that the user has 2156 * interacted with the device in some way while your activity is running. 2157 * This callback and {@link #onUserLeaveHint} are intended to help 2158 * activities manage status bar notifications intelligently; specifically, 2159 * for helping activities determine the proper time to cancel a notfication. 2160 * 2161 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2162 * be accompanied by calls to {@link #onUserInteraction}. This 2163 * ensures that your activity will be told of relevant user activity such 2164 * as pulling down the notification pane and touching an item there. 2165 * 2166 * <p>Note that this callback will be invoked for the touch down action 2167 * that begins a touch gesture, but may not be invoked for the touch-moved 2168 * and touch-up actions that follow. 2169 * 2170 * @see #onUserLeaveHint() 2171 */ 2172 public void onUserInteraction() { 2173 } 2174 2175 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2176 // Update window manager if: we have a view, that view is 2177 // attached to its parent (which will be a RootView), and 2178 // this activity is not embedded. 2179 if (mParent == null) { 2180 View decor = mDecor; 2181 if (decor != null && decor.getParent() != null) { 2182 getWindowManager().updateViewLayout(decor, params); 2183 } 2184 } 2185 } 2186 2187 public void onContentChanged() { 2188 } 2189 2190 /** 2191 * Called when the current {@link Window} of the activity gains or loses 2192 * focus. This is the best indicator of whether this activity is visible 2193 * to the user. The default implementation clears the key tracking 2194 * state, so should always be called. 2195 * 2196 * <p>Note that this provides information about global focus state, which 2197 * is managed independently of activity lifecycles. As such, while focus 2198 * changes will generally have some relation to lifecycle changes (an 2199 * activity that is stopped will not generally get window focus), you 2200 * should not rely on any particular order between the callbacks here and 2201 * those in the other lifecycle methods such as {@link #onResume}. 2202 * 2203 * <p>As a general rule, however, a resumed activity will have window 2204 * focus... unless it has displayed other dialogs or popups that take 2205 * input focus, in which case the activity itself will not have focus 2206 * when the other windows have it. Likewise, the system may display 2207 * system-level windows (such as the status bar notification panel or 2208 * a system alert) which will temporarily take window input focus without 2209 * pausing the foreground activity. 2210 * 2211 * @param hasFocus Whether the window of this activity has focus. 2212 * 2213 * @see #hasWindowFocus() 2214 * @see #onResume 2215 * @see View#onWindowFocusChanged(boolean) 2216 */ 2217 public void onWindowFocusChanged(boolean hasFocus) { 2218 } 2219 2220 /** 2221 * Called when the main window associated with the activity has been 2222 * attached to the window manager. 2223 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2224 * for more information. 2225 * @see View#onAttachedToWindow 2226 */ 2227 public void onAttachedToWindow() { 2228 } 2229 2230 /** 2231 * Called when the main window associated with the activity has been 2232 * detached from the window manager. 2233 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2234 * for more information. 2235 * @see View#onDetachedFromWindow 2236 */ 2237 public void onDetachedFromWindow() { 2238 } 2239 2240 /** 2241 * Returns true if this activity's <em>main</em> window currently has window focus. 2242 * Note that this is not the same as the view itself having focus. 2243 * 2244 * @return True if this activity's main window currently has window focus. 2245 * 2246 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2247 */ 2248 public boolean hasWindowFocus() { 2249 Window w = getWindow(); 2250 if (w != null) { 2251 View d = w.getDecorView(); 2252 if (d != null) { 2253 return d.hasWindowFocus(); 2254 } 2255 } 2256 return false; 2257 } 2258 2259 /** 2260 * Called to process key events. You can override this to intercept all 2261 * key events before they are dispatched to the window. Be sure to call 2262 * this implementation for key events that should be handled normally. 2263 * 2264 * @param event The key event. 2265 * 2266 * @return boolean Return true if this event was consumed. 2267 */ 2268 public boolean dispatchKeyEvent(KeyEvent event) { 2269 onUserInteraction(); 2270 Window win = getWindow(); 2271 if (win.superDispatchKeyEvent(event)) { 2272 return true; 2273 } 2274 View decor = mDecor; 2275 if (decor == null) decor = win.getDecorView(); 2276 return event.dispatch(this, decor != null 2277 ? decor.getKeyDispatcherState() : null, this); 2278 } 2279 2280 /** 2281 * Called to process a key shortcut event. 2282 * You can override this to intercept all key shortcut events before they are 2283 * dispatched to the window. Be sure to call this implementation for key shortcut 2284 * events that should be handled normally. 2285 * 2286 * @param event The key shortcut event. 2287 * @return True if this event was consumed. 2288 */ 2289 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2290 onUserInteraction(); 2291 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2292 return true; 2293 } 2294 return onKeyShortcut(event.getKeyCode(), event); 2295 } 2296 2297 /** 2298 * Called to process touch screen events. You can override this to 2299 * intercept all touch screen events before they are dispatched to the 2300 * window. Be sure to call this implementation for touch screen events 2301 * that should be handled normally. 2302 * 2303 * @param ev The touch screen event. 2304 * 2305 * @return boolean Return true if this event was consumed. 2306 */ 2307 public boolean dispatchTouchEvent(MotionEvent ev) { 2308 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2309 onUserInteraction(); 2310 } 2311 if (getWindow().superDispatchTouchEvent(ev)) { 2312 return true; 2313 } 2314 return onTouchEvent(ev); 2315 } 2316 2317 /** 2318 * Called to process trackball events. You can override this to 2319 * intercept all trackball events before they are dispatched to the 2320 * window. Be sure to call this implementation for trackball events 2321 * that should be handled normally. 2322 * 2323 * @param ev The trackball event. 2324 * 2325 * @return boolean Return true if this event was consumed. 2326 */ 2327 public boolean dispatchTrackballEvent(MotionEvent ev) { 2328 onUserInteraction(); 2329 if (getWindow().superDispatchTrackballEvent(ev)) { 2330 return true; 2331 } 2332 return onTrackballEvent(ev); 2333 } 2334 2335 /** 2336 * Called to process generic motion events. You can override this to 2337 * intercept all generic motion events before they are dispatched to the 2338 * window. Be sure to call this implementation for generic motion events 2339 * that should be handled normally. 2340 * 2341 * @param ev The generic motion event. 2342 * 2343 * @return boolean Return true if this event was consumed. 2344 */ 2345 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2346 onUserInteraction(); 2347 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2348 return true; 2349 } 2350 return onGenericMotionEvent(ev); 2351 } 2352 2353 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2354 event.setClassName(getClass().getName()); 2355 event.setPackageName(getPackageName()); 2356 2357 LayoutParams params = getWindow().getAttributes(); 2358 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2359 (params.height == LayoutParams.MATCH_PARENT); 2360 event.setFullScreen(isFullScreen); 2361 2362 CharSequence title = getTitle(); 2363 if (!TextUtils.isEmpty(title)) { 2364 event.getText().add(title); 2365 } 2366 2367 return true; 2368 } 2369 2370 /** 2371 * Default implementation of 2372 * {@link android.view.Window.Callback#onCreatePanelView} 2373 * for activities. This 2374 * simply returns null so that all panel sub-windows will have the default 2375 * menu behavior. 2376 */ 2377 public View onCreatePanelView(int featureId) { 2378 return null; 2379 } 2380 2381 /** 2382 * Default implementation of 2383 * {@link android.view.Window.Callback#onCreatePanelMenu} 2384 * for activities. This calls through to the new 2385 * {@link #onCreateOptionsMenu} method for the 2386 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2387 * so that subclasses of Activity don't need to deal with feature codes. 2388 */ 2389 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2390 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2391 boolean show = onCreateOptionsMenu(menu); 2392 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2393 return show; 2394 } 2395 return false; 2396 } 2397 2398 /** 2399 * Default implementation of 2400 * {@link android.view.Window.Callback#onPreparePanel} 2401 * for activities. This 2402 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2403 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2404 * panel, so that subclasses of 2405 * Activity don't need to deal with feature codes. 2406 */ 2407 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2408 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2409 boolean goforit = onPrepareOptionsMenu(menu); 2410 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2411 return goforit && menu.hasVisibleItems(); 2412 } 2413 return true; 2414 } 2415 2416 /** 2417 * {@inheritDoc} 2418 * 2419 * @return The default implementation returns true. 2420 */ 2421 public boolean onMenuOpened(int featureId, Menu menu) { 2422 if (featureId == Window.FEATURE_ACTION_BAR) { 2423 if (mActionBar != null) { 2424 mActionBar.dispatchMenuVisibilityChanged(true); 2425 } else { 2426 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2427 } 2428 } 2429 return true; 2430 } 2431 2432 /** 2433 * Default implementation of 2434 * {@link android.view.Window.Callback#onMenuItemSelected} 2435 * for activities. This calls through to the new 2436 * {@link #onOptionsItemSelected} method for the 2437 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2438 * panel, so that subclasses of 2439 * Activity don't need to deal with feature codes. 2440 */ 2441 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2442 switch (featureId) { 2443 case Window.FEATURE_OPTIONS_PANEL: 2444 // Put event logging here so it gets called even if subclass 2445 // doesn't call through to superclass's implmeentation of each 2446 // of these methods below 2447 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2448 if (onOptionsItemSelected(item)) { 2449 return true; 2450 } 2451 return mFragments.dispatchOptionsItemSelected(item); 2452 2453 case Window.FEATURE_CONTEXT_MENU: 2454 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2455 if (onContextItemSelected(item)) { 2456 return true; 2457 } 2458 return mFragments.dispatchContextItemSelected(item); 2459 2460 default: 2461 return false; 2462 } 2463 } 2464 2465 /** 2466 * Default implementation of 2467 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2468 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2469 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2470 * so that subclasses of Activity don't need to deal with feature codes. 2471 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2472 * {@link #onContextMenuClosed(Menu)} will be called. 2473 */ 2474 public void onPanelClosed(int featureId, Menu menu) { 2475 switch (featureId) { 2476 case Window.FEATURE_OPTIONS_PANEL: 2477 mFragments.dispatchOptionsMenuClosed(menu); 2478 onOptionsMenuClosed(menu); 2479 break; 2480 2481 case Window.FEATURE_CONTEXT_MENU: 2482 onContextMenuClosed(menu); 2483 break; 2484 2485 case Window.FEATURE_ACTION_BAR: 2486 mActionBar.dispatchMenuVisibilityChanged(false); 2487 break; 2488 } 2489 } 2490 2491 /** 2492 * Declare that the options menu has changed, so should be recreated. 2493 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2494 * time it needs to be displayed. 2495 */ 2496 public void invalidateOptionsMenu() { 2497 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2498 } 2499 2500 /** 2501 * Initialize the contents of the Activity's standard options menu. You 2502 * should place your menu items in to <var>menu</var>. 2503 * 2504 * <p>This is only called once, the first time the options menu is 2505 * displayed. To update the menu every time it is displayed, see 2506 * {@link #onPrepareOptionsMenu}. 2507 * 2508 * <p>The default implementation populates the menu with standard system 2509 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2510 * they will be correctly ordered with application-defined menu items. 2511 * Deriving classes should always call through to the base implementation. 2512 * 2513 * <p>You can safely hold on to <var>menu</var> (and any items created 2514 * from it), making modifications to it as desired, until the next 2515 * time onCreateOptionsMenu() is called. 2516 * 2517 * <p>When you add items to the menu, you can implement the Activity's 2518 * {@link #onOptionsItemSelected} method to handle them there. 2519 * 2520 * @param menu The options menu in which you place your items. 2521 * 2522 * @return You must return true for the menu to be displayed; 2523 * if you return false it will not be shown. 2524 * 2525 * @see #onPrepareOptionsMenu 2526 * @see #onOptionsItemSelected 2527 */ 2528 public boolean onCreateOptionsMenu(Menu menu) { 2529 if (mParent != null) { 2530 return mParent.onCreateOptionsMenu(menu); 2531 } 2532 return true; 2533 } 2534 2535 /** 2536 * Prepare the Screen's standard options menu to be displayed. This is 2537 * called right before the menu is shown, every time it is shown. You can 2538 * use this method to efficiently enable/disable items or otherwise 2539 * dynamically modify the contents. 2540 * 2541 * <p>The default implementation updates the system menu items based on the 2542 * activity's state. Deriving classes should always call through to the 2543 * base class implementation. 2544 * 2545 * @param menu The options menu as last shown or first initialized by 2546 * onCreateOptionsMenu(). 2547 * 2548 * @return You must return true for the menu to be displayed; 2549 * if you return false it will not be shown. 2550 * 2551 * @see #onCreateOptionsMenu 2552 */ 2553 public boolean onPrepareOptionsMenu(Menu menu) { 2554 if (mParent != null) { 2555 return mParent.onPrepareOptionsMenu(menu); 2556 } 2557 return true; 2558 } 2559 2560 /** 2561 * This hook is called whenever an item in your options menu is selected. 2562 * The default implementation simply returns false to have the normal 2563 * processing happen (calling the item's Runnable or sending a message to 2564 * its Handler as appropriate). You can use this method for any items 2565 * for which you would like to do processing without those other 2566 * facilities. 2567 * 2568 * <p>Derived classes should call through to the base class for it to 2569 * perform the default menu handling. 2570 * 2571 * @param item The menu item that was selected. 2572 * 2573 * @return boolean Return false to allow normal menu processing to 2574 * proceed, true to consume it here. 2575 * 2576 * @see #onCreateOptionsMenu 2577 */ 2578 public boolean onOptionsItemSelected(MenuItem item) { 2579 if (mParent != null) { 2580 return mParent.onOptionsItemSelected(item); 2581 } 2582 return false; 2583 } 2584 2585 /** 2586 * This hook is called whenever the options menu is being closed (either by the user canceling 2587 * the menu with the back/menu button, or when an item is selected). 2588 * 2589 * @param menu The options menu as last shown or first initialized by 2590 * onCreateOptionsMenu(). 2591 */ 2592 public void onOptionsMenuClosed(Menu menu) { 2593 if (mParent != null) { 2594 mParent.onOptionsMenuClosed(menu); 2595 } 2596 } 2597 2598 /** 2599 * Programmatically opens the options menu. If the options menu is already 2600 * open, this method does nothing. 2601 */ 2602 public void openOptionsMenu() { 2603 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2604 } 2605 2606 /** 2607 * Progammatically closes the options menu. If the options menu is already 2608 * closed, this method does nothing. 2609 */ 2610 public void closeOptionsMenu() { 2611 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2612 } 2613 2614 /** 2615 * Called when a context menu for the {@code view} is about to be shown. 2616 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2617 * time the context menu is about to be shown and should be populated for 2618 * the view (or item inside the view for {@link AdapterView} subclasses, 2619 * this can be found in the {@code menuInfo})). 2620 * <p> 2621 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2622 * item has been selected. 2623 * <p> 2624 * It is not safe to hold onto the context menu after this method returns. 2625 * {@inheritDoc} 2626 */ 2627 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2628 } 2629 2630 /** 2631 * Registers a context menu to be shown for the given view (multiple views 2632 * can show the context menu). This method will set the 2633 * {@link OnCreateContextMenuListener} on the view to this activity, so 2634 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2635 * called when it is time to show the context menu. 2636 * 2637 * @see #unregisterForContextMenu(View) 2638 * @param view The view that should show a context menu. 2639 */ 2640 public void registerForContextMenu(View view) { 2641 view.setOnCreateContextMenuListener(this); 2642 } 2643 2644 /** 2645 * Prevents a context menu to be shown for the given view. This method will remove the 2646 * {@link OnCreateContextMenuListener} on the view. 2647 * 2648 * @see #registerForContextMenu(View) 2649 * @param view The view that should stop showing a context menu. 2650 */ 2651 public void unregisterForContextMenu(View view) { 2652 view.setOnCreateContextMenuListener(null); 2653 } 2654 2655 /** 2656 * Programmatically opens the context menu for a particular {@code view}. 2657 * The {@code view} should have been added via 2658 * {@link #registerForContextMenu(View)}. 2659 * 2660 * @param view The view to show the context menu for. 2661 */ 2662 public void openContextMenu(View view) { 2663 view.showContextMenu(); 2664 } 2665 2666 /** 2667 * Programmatically closes the most recently opened context menu, if showing. 2668 */ 2669 public void closeContextMenu() { 2670 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2671 } 2672 2673 /** 2674 * This hook is called whenever an item in a context menu is selected. The 2675 * default implementation simply returns false to have the normal processing 2676 * happen (calling the item's Runnable or sending a message to its Handler 2677 * as appropriate). You can use this method for any items for which you 2678 * would like to do processing without those other facilities. 2679 * <p> 2680 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2681 * View that added this menu item. 2682 * <p> 2683 * Derived classes should call through to the base class for it to perform 2684 * the default menu handling. 2685 * 2686 * @param item The context menu item that was selected. 2687 * @return boolean Return false to allow normal context menu processing to 2688 * proceed, true to consume it here. 2689 */ 2690 public boolean onContextItemSelected(MenuItem item) { 2691 if (mParent != null) { 2692 return mParent.onContextItemSelected(item); 2693 } 2694 return false; 2695 } 2696 2697 /** 2698 * This hook is called whenever the context menu is being closed (either by 2699 * the user canceling the menu with the back/menu button, or when an item is 2700 * selected). 2701 * 2702 * @param menu The context menu that is being closed. 2703 */ 2704 public void onContextMenuClosed(Menu menu) { 2705 if (mParent != null) { 2706 mParent.onContextMenuClosed(menu); 2707 } 2708 } 2709 2710 /** 2711 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2712 */ 2713 @Deprecated 2714 protected Dialog onCreateDialog(int id) { 2715 return null; 2716 } 2717 2718 /** 2719 * Callback for creating dialogs that are managed (saved and restored) for you 2720 * by the activity. The default implementation calls through to 2721 * {@link #onCreateDialog(int)} for compatibility. 2722 * 2723 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2724 * or later, consider instead using a {@link DialogFragment} instead.</em> 2725 * 2726 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2727 * this method the first time, and hang onto it thereafter. Any dialog 2728 * that is created by this method will automatically be saved and restored 2729 * for you, including whether it is showing. 2730 * 2731 * <p>If you would like the activity to manage saving and restoring dialogs 2732 * for you, you should override this method and handle any ids that are 2733 * passed to {@link #showDialog}. 2734 * 2735 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2736 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2737 * 2738 * @param id The id of the dialog. 2739 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2740 * @return The dialog. If you return null, the dialog will not be created. 2741 * 2742 * @see #onPrepareDialog(int, Dialog, Bundle) 2743 * @see #showDialog(int, Bundle) 2744 * @see #dismissDialog(int) 2745 * @see #removeDialog(int) 2746 */ 2747 protected Dialog onCreateDialog(int id, Bundle args) { 2748 return onCreateDialog(id); 2749 } 2750 2751 /** 2752 * @deprecated Old no-arguments version of 2753 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2754 */ 2755 @Deprecated 2756 protected void onPrepareDialog(int id, Dialog dialog) { 2757 dialog.setOwnerActivity(this); 2758 } 2759 2760 /** 2761 * Provides an opportunity to prepare a managed dialog before it is being 2762 * shown. The default implementation calls through to 2763 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2764 * 2765 * <p> 2766 * Override this if you need to update a managed dialog based on the state 2767 * of the application each time it is shown. For example, a time picker 2768 * dialog might want to be updated with the current time. You should call 2769 * through to the superclass's implementation. The default implementation 2770 * will set this Activity as the owner activity on the Dialog. 2771 * 2772 * @param id The id of the managed dialog. 2773 * @param dialog The dialog. 2774 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2775 * @see #onCreateDialog(int, Bundle) 2776 * @see #showDialog(int) 2777 * @see #dismissDialog(int) 2778 * @see #removeDialog(int) 2779 */ 2780 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2781 onPrepareDialog(id, dialog); 2782 } 2783 2784 /** 2785 * Simple version of {@link #showDialog(int, Bundle)} that does not 2786 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2787 * with null arguments. 2788 */ 2789 public final void showDialog(int id) { 2790 showDialog(id, null); 2791 } 2792 2793 /** 2794 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2795 * will be made with the same id the first time this is called for a given 2796 * id. From thereafter, the dialog will be automatically saved and restored. 2797 * 2798 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2799 * or later, consider instead using a {@link DialogFragment} instead.</em> 2800 * 2801 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2802 * be made to provide an opportunity to do any timely preparation. 2803 * 2804 * @param id The id of the managed dialog. 2805 * @param args Arguments to pass through to the dialog. These will be saved 2806 * and restored for you. Note that if the dialog is already created, 2807 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2808 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2809 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2810 * @return Returns true if the Dialog was created; false is returned if 2811 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2812 * 2813 * @see Dialog 2814 * @see #onCreateDialog(int, Bundle) 2815 * @see #onPrepareDialog(int, Dialog, Bundle) 2816 * @see #dismissDialog(int) 2817 * @see #removeDialog(int) 2818 */ 2819 public final boolean showDialog(int id, Bundle args) { 2820 if (mManagedDialogs == null) { 2821 mManagedDialogs = new SparseArray<ManagedDialog>(); 2822 } 2823 ManagedDialog md = mManagedDialogs.get(id); 2824 if (md == null) { 2825 md = new ManagedDialog(); 2826 md.mDialog = createDialog(id, null, args); 2827 if (md.mDialog == null) { 2828 return false; 2829 } 2830 mManagedDialogs.put(id, md); 2831 } 2832 2833 md.mArgs = args; 2834 onPrepareDialog(id, md.mDialog, args); 2835 md.mDialog.show(); 2836 return true; 2837 } 2838 2839 /** 2840 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2841 * 2842 * @param id The id of the managed dialog. 2843 * 2844 * @throws IllegalArgumentException if the id was not previously shown via 2845 * {@link #showDialog(int)}. 2846 * 2847 * @see #onCreateDialog(int, Bundle) 2848 * @see #onPrepareDialog(int, Dialog, Bundle) 2849 * @see #showDialog(int) 2850 * @see #removeDialog(int) 2851 */ 2852 public final void dismissDialog(int id) { 2853 if (mManagedDialogs == null) { 2854 throw missingDialog(id); 2855 } 2856 2857 final ManagedDialog md = mManagedDialogs.get(id); 2858 if (md == null) { 2859 throw missingDialog(id); 2860 } 2861 md.mDialog.dismiss(); 2862 } 2863 2864 /** 2865 * Creates an exception to throw if a user passed in a dialog id that is 2866 * unexpected. 2867 */ 2868 private IllegalArgumentException missingDialog(int id) { 2869 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2870 + "shown via Activity#showDialog"); 2871 } 2872 2873 /** 2874 * Removes any internal references to a dialog managed by this Activity. 2875 * If the dialog is showing, it will dismiss it as part of the clean up. 2876 * 2877 * <p>This can be useful if you know that you will never show a dialog again and 2878 * want to avoid the overhead of saving and restoring it in the future. 2879 * 2880 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2881 * will not throw an exception if you try to remove an ID that does not 2882 * currently have an associated dialog.</p> 2883 * 2884 * @param id The id of the managed dialog. 2885 * 2886 * @see #onCreateDialog(int, Bundle) 2887 * @see #onPrepareDialog(int, Dialog, Bundle) 2888 * @see #showDialog(int) 2889 * @see #dismissDialog(int) 2890 */ 2891 public final void removeDialog(int id) { 2892 if (mManagedDialogs != null) { 2893 final ManagedDialog md = mManagedDialogs.get(id); 2894 if (md != null) { 2895 md.mDialog.dismiss(); 2896 mManagedDialogs.remove(id); 2897 } 2898 } 2899 } 2900 2901 /** 2902 * This hook is called when the user signals the desire to start a search. 2903 * 2904 * <p>You can use this function as a simple way to launch the search UI, in response to a 2905 * menu item, search button, or other widgets within your activity. Unless overidden, 2906 * calling this function is the same as calling 2907 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2908 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2909 * 2910 * <p>You can override this function to force global search, e.g. in response to a dedicated 2911 * search key, or to block search entirely (by simply returning false). 2912 * 2913 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2914 * The default implementation always returns {@code true}. 2915 * 2916 * @see android.app.SearchManager 2917 */ 2918 public boolean onSearchRequested() { 2919 startSearch(null, false, null, false); 2920 return true; 2921 } 2922 2923 /** 2924 * This hook is called to launch the search UI. 2925 * 2926 * <p>It is typically called from onSearchRequested(), either directly from 2927 * Activity.onSearchRequested() or from an overridden version in any given 2928 * Activity. If your goal is simply to activate search, it is preferred to call 2929 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2930 * is to inject specific data such as context data, it is preferred to <i>override</i> 2931 * onSearchRequested(), so that any callers to it will benefit from the override. 2932 * 2933 * @param initialQuery Any non-null non-empty string will be inserted as 2934 * pre-entered text in the search query box. 2935 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2936 * any further typing will replace it. This is useful for cases where an entire pre-formed 2937 * query is being inserted. If false, the selection point will be placed at the end of the 2938 * inserted query. This is useful when the inserted query is text that the user entered, 2939 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 2940 * if initialQuery is a non-empty string.</i> 2941 * @param appSearchData An application can insert application-specific 2942 * context here, in order to improve quality or specificity of its own 2943 * searches. This data will be returned with SEARCH intent(s). Null if 2944 * no extra data is required. 2945 * @param globalSearch If false, this will only launch the search that has been specifically 2946 * defined by the application (which is usually defined as a local search). If no default 2947 * search is defined in the current application or activity, global search will be launched. 2948 * If true, this will always launch a platform-global (e.g. web-based) search instead. 2949 * 2950 * @see android.app.SearchManager 2951 * @see #onSearchRequested 2952 */ 2953 public void startSearch(String initialQuery, boolean selectInitialQuery, 2954 Bundle appSearchData, boolean globalSearch) { 2955 ensureSearchManager(); 2956 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 2957 appSearchData, globalSearch); 2958 } 2959 2960 /** 2961 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 2962 * the search dialog. Made available for testing purposes. 2963 * 2964 * @param query The query to trigger. If empty, the request will be ignored. 2965 * @param appSearchData An application can insert application-specific 2966 * context here, in order to improve quality or specificity of its own 2967 * searches. This data will be returned with SEARCH intent(s). Null if 2968 * no extra data is required. 2969 */ 2970 public void triggerSearch(String query, Bundle appSearchData) { 2971 ensureSearchManager(); 2972 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 2973 } 2974 2975 /** 2976 * Request that key events come to this activity. Use this if your 2977 * activity has no views with focus, but the activity still wants 2978 * a chance to process key events. 2979 * 2980 * @see android.view.Window#takeKeyEvents 2981 */ 2982 public void takeKeyEvents(boolean get) { 2983 getWindow().takeKeyEvents(get); 2984 } 2985 2986 /** 2987 * Enable extended window features. This is a convenience for calling 2988 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 2989 * 2990 * @param featureId The desired feature as defined in 2991 * {@link android.view.Window}. 2992 * @return Returns true if the requested feature is supported and now 2993 * enabled. 2994 * 2995 * @see android.view.Window#requestFeature 2996 */ 2997 public final boolean requestWindowFeature(int featureId) { 2998 return getWindow().requestFeature(featureId); 2999 } 3000 3001 /** 3002 * Convenience for calling 3003 * {@link android.view.Window#setFeatureDrawableResource}. 3004 */ 3005 public final void setFeatureDrawableResource(int featureId, int resId) { 3006 getWindow().setFeatureDrawableResource(featureId, resId); 3007 } 3008 3009 /** 3010 * Convenience for calling 3011 * {@link android.view.Window#setFeatureDrawableUri}. 3012 */ 3013 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3014 getWindow().setFeatureDrawableUri(featureId, uri); 3015 } 3016 3017 /** 3018 * Convenience for calling 3019 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3020 */ 3021 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3022 getWindow().setFeatureDrawable(featureId, drawable); 3023 } 3024 3025 /** 3026 * Convenience for calling 3027 * {@link android.view.Window#setFeatureDrawableAlpha}. 3028 */ 3029 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3030 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3031 } 3032 3033 /** 3034 * Convenience for calling 3035 * {@link android.view.Window#getLayoutInflater}. 3036 */ 3037 public LayoutInflater getLayoutInflater() { 3038 return getWindow().getLayoutInflater(); 3039 } 3040 3041 /** 3042 * Returns a {@link MenuInflater} with this context. 3043 */ 3044 public MenuInflater getMenuInflater() { 3045 return new MenuInflater(this); 3046 } 3047 3048 @Override 3049 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3050 boolean first) { 3051 if (mParent == null) { 3052 super.onApplyThemeResource(theme, resid, first); 3053 } else { 3054 try { 3055 theme.setTo(mParent.getTheme()); 3056 } catch (Exception e) { 3057 // Empty 3058 } 3059 theme.applyStyle(resid, false); 3060 } 3061 } 3062 3063 /** 3064 * Launch an activity for which you would like a result when it finished. 3065 * When this activity exits, your 3066 * onActivityResult() method will be called with the given requestCode. 3067 * Using a negative requestCode is the same as calling 3068 * {@link #startActivity} (the activity is not launched as a sub-activity). 3069 * 3070 * <p>Note that this method should only be used with Intent protocols 3071 * that are defined to return a result. In other protocols (such as 3072 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3073 * not get the result when you expect. For example, if the activity you 3074 * are launching uses the singleTask launch mode, it will not run in your 3075 * task and thus you will immediately receive a cancel result. 3076 * 3077 * <p>As a special case, if you call startActivityForResult() with a requestCode 3078 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3079 * activity, then your window will not be displayed until a result is 3080 * returned back from the started activity. This is to avoid visible 3081 * flickering when redirecting to another activity. 3082 * 3083 * <p>This method throws {@link android.content.ActivityNotFoundException} 3084 * if there was no Activity found to run the given Intent. 3085 * 3086 * @param intent The intent to start. 3087 * @param requestCode If >= 0, this code will be returned in 3088 * onActivityResult() when the activity exits. 3089 * 3090 * @throws android.content.ActivityNotFoundException 3091 * 3092 * @see #startActivity 3093 */ 3094 public void startActivityForResult(Intent intent, int requestCode) { 3095 if (mParent == null) { 3096 Instrumentation.ActivityResult ar = 3097 mInstrumentation.execStartActivity( 3098 this, mMainThread.getApplicationThread(), mToken, this, 3099 intent, requestCode); 3100 if (ar != null) { 3101 mMainThread.sendActivityResult( 3102 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3103 ar.getResultData()); 3104 } 3105 if (requestCode >= 0) { 3106 // If this start is requesting a result, we can avoid making 3107 // the activity visible until the result is received. Setting 3108 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3109 // activity hidden during this time, to avoid flickering. 3110 // This can only be done when a result is requested because 3111 // that guarantees we will get information back when the 3112 // activity is finished, no matter what happens to it. 3113 mStartedActivity = true; 3114 } 3115 } else { 3116 mParent.startActivityFromChild(this, intent, requestCode); 3117 } 3118 } 3119 3120 /** 3121 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3122 * to use a IntentSender to describe the activity to be started. If 3123 * the IntentSender is for an activity, that activity will be started 3124 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3125 * here; otherwise, its associated action will be executed (such as 3126 * sending a broadcast) as if you had called 3127 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3128 * 3129 * @param intent The IntentSender to launch. 3130 * @param requestCode If >= 0, this code will be returned in 3131 * onActivityResult() when the activity exits. 3132 * @param fillInIntent If non-null, this will be provided as the 3133 * intent parameter to {@link IntentSender#sendIntent}. 3134 * @param flagsMask Intent flags in the original IntentSender that you 3135 * would like to change. 3136 * @param flagsValues Desired values for any bits set in 3137 * <var>flagsMask</var> 3138 * @param extraFlags Always set to 0. 3139 */ 3140 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3141 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3142 throws IntentSender.SendIntentException { 3143 if (mParent == null) { 3144 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3145 flagsMask, flagsValues, this); 3146 } else { 3147 mParent.startIntentSenderFromChild(this, intent, requestCode, 3148 fillInIntent, flagsMask, flagsValues, extraFlags); 3149 } 3150 } 3151 3152 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3153 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3154 throws IntentSender.SendIntentException { 3155 try { 3156 String resolvedType = null; 3157 if (fillInIntent != null) { 3158 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3159 } 3160 int result = ActivityManagerNative.getDefault() 3161 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3162 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3163 requestCode, flagsMask, flagsValues); 3164 if (result == IActivityManager.START_CANCELED) { 3165 throw new IntentSender.SendIntentException(); 3166 } 3167 Instrumentation.checkStartActivityResult(result, null); 3168 } catch (RemoteException e) { 3169 } 3170 if (requestCode >= 0) { 3171 // If this start is requesting a result, we can avoid making 3172 // the activity visible until the result is received. Setting 3173 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3174 // activity hidden during this time, to avoid flickering. 3175 // This can only be done when a result is requested because 3176 // that guarantees we will get information back when the 3177 // activity is finished, no matter what happens to it. 3178 mStartedActivity = true; 3179 } 3180 } 3181 3182 /** 3183 * Launch a new activity. You will not receive any information about when 3184 * the activity exits. This implementation overrides the base version, 3185 * providing information about 3186 * the activity performing the launch. Because of this additional 3187 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3188 * required; if not specified, the new activity will be added to the 3189 * task of the caller. 3190 * 3191 * <p>This method throws {@link android.content.ActivityNotFoundException} 3192 * if there was no Activity found to run the given Intent. 3193 * 3194 * @param intent The intent to start. 3195 * 3196 * @throws android.content.ActivityNotFoundException 3197 * 3198 * @see #startActivityForResult 3199 */ 3200 @Override 3201 public void startActivity(Intent intent) { 3202 startActivityForResult(intent, -1); 3203 } 3204 3205 /** 3206 * Launch a new activity. You will not receive any information about when 3207 * the activity exits. This implementation overrides the base version, 3208 * providing information about 3209 * the activity performing the launch. Because of this additional 3210 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3211 * required; if not specified, the new activity will be added to the 3212 * task of the caller. 3213 * 3214 * <p>This method throws {@link android.content.ActivityNotFoundException} 3215 * if there was no Activity found to run the given Intent. 3216 * 3217 * @param intents The intents to start. 3218 * 3219 * @throws android.content.ActivityNotFoundException 3220 * 3221 * @see #startActivityForResult 3222 */ 3223 @Override 3224 public void startActivities(Intent[] intents) { 3225 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3226 mToken, this, intents); 3227 } 3228 3229 /** 3230 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3231 * to start; see 3232 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3233 * for more information. 3234 * 3235 * @param intent The IntentSender to launch. 3236 * @param fillInIntent If non-null, this will be provided as the 3237 * intent parameter to {@link IntentSender#sendIntent}. 3238 * @param flagsMask Intent flags in the original IntentSender that you 3239 * would like to change. 3240 * @param flagsValues Desired values for any bits set in 3241 * <var>flagsMask</var> 3242 * @param extraFlags Always set to 0. 3243 */ 3244 public void startIntentSender(IntentSender intent, 3245 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3246 throws IntentSender.SendIntentException { 3247 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3248 flagsValues, extraFlags); 3249 } 3250 3251 /** 3252 * A special variation to launch an activity only if a new activity 3253 * instance is needed to handle the given Intent. In other words, this is 3254 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3255 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3256 * singleTask or singleTop 3257 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3258 * and the activity 3259 * that handles <var>intent</var> is the same as your currently running 3260 * activity, then a new instance is not needed. In this case, instead of 3261 * the normal behavior of calling {@link #onNewIntent} this function will 3262 * return and you can handle the Intent yourself. 3263 * 3264 * <p>This function can only be called from a top-level activity; if it is 3265 * called from a child activity, a runtime exception will be thrown. 3266 * 3267 * @param intent The intent to start. 3268 * @param requestCode If >= 0, this code will be returned in 3269 * onActivityResult() when the activity exits, as described in 3270 * {@link #startActivityForResult}. 3271 * 3272 * @return If a new activity was launched then true is returned; otherwise 3273 * false is returned and you must handle the Intent yourself. 3274 * 3275 * @see #startActivity 3276 * @see #startActivityForResult 3277 */ 3278 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3279 if (mParent == null) { 3280 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3281 try { 3282 result = ActivityManagerNative.getDefault() 3283 .startActivity(mMainThread.getApplicationThread(), 3284 intent, intent.resolveTypeIfNeeded( 3285 getContentResolver()), 3286 null, 0, 3287 mToken, mEmbeddedID, requestCode, true, false); 3288 } catch (RemoteException e) { 3289 // Empty 3290 } 3291 3292 Instrumentation.checkStartActivityResult(result, intent); 3293 3294 if (requestCode >= 0) { 3295 // If this start is requesting a result, we can avoid making 3296 // the activity visible until the result is received. Setting 3297 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3298 // activity hidden during this time, to avoid flickering. 3299 // This can only be done when a result is requested because 3300 // that guarantees we will get information back when the 3301 // activity is finished, no matter what happens to it. 3302 mStartedActivity = true; 3303 } 3304 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3305 } 3306 3307 throw new UnsupportedOperationException( 3308 "startActivityIfNeeded can only be called from a top-level activity"); 3309 } 3310 3311 /** 3312 * Special version of starting an activity, for use when you are replacing 3313 * other activity components. You can use this to hand the Intent off 3314 * to the next Activity that can handle it. You typically call this in 3315 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3316 * 3317 * @param intent The intent to dispatch to the next activity. For 3318 * correct behavior, this must be the same as the Intent that started 3319 * your own activity; the only changes you can make are to the extras 3320 * inside of it. 3321 * 3322 * @return Returns a boolean indicating whether there was another Activity 3323 * to start: true if there was a next activity to start, false if there 3324 * wasn't. In general, if true is returned you will then want to call 3325 * finish() on yourself. 3326 */ 3327 public boolean startNextMatchingActivity(Intent intent) { 3328 if (mParent == null) { 3329 try { 3330 return ActivityManagerNative.getDefault() 3331 .startNextMatchingActivity(mToken, intent); 3332 } catch (RemoteException e) { 3333 // Empty 3334 } 3335 return false; 3336 } 3337 3338 throw new UnsupportedOperationException( 3339 "startNextMatchingActivity can only be called from a top-level activity"); 3340 } 3341 3342 /** 3343 * This is called when a child activity of this one calls its 3344 * {@link #startActivity} or {@link #startActivityForResult} method. 3345 * 3346 * <p>This method throws {@link android.content.ActivityNotFoundException} 3347 * if there was no Activity found to run the given Intent. 3348 * 3349 * @param child The activity making the call. 3350 * @param intent The intent to start. 3351 * @param requestCode Reply request code. < 0 if reply is not requested. 3352 * 3353 * @throws android.content.ActivityNotFoundException 3354 * 3355 * @see #startActivity 3356 * @see #startActivityForResult 3357 */ 3358 public void startActivityFromChild(Activity child, Intent intent, 3359 int requestCode) { 3360 Instrumentation.ActivityResult ar = 3361 mInstrumentation.execStartActivity( 3362 this, mMainThread.getApplicationThread(), mToken, child, 3363 intent, requestCode); 3364 if (ar != null) { 3365 mMainThread.sendActivityResult( 3366 mToken, child.mEmbeddedID, requestCode, 3367 ar.getResultCode(), ar.getResultData()); 3368 } 3369 } 3370 3371 /** 3372 * This is called when a Fragment in this activity calls its 3373 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3374 * method. 3375 * 3376 * <p>This method throws {@link android.content.ActivityNotFoundException} 3377 * if there was no Activity found to run the given Intent. 3378 * 3379 * @param fragment The fragment making the call. 3380 * @param intent The intent to start. 3381 * @param requestCode Reply request code. < 0 if reply is not requested. 3382 * 3383 * @throws android.content.ActivityNotFoundException 3384 * 3385 * @see Fragment#startActivity 3386 * @see Fragment#startActivityForResult 3387 */ 3388 public void startActivityFromFragment(Fragment fragment, Intent intent, 3389 int requestCode) { 3390 Instrumentation.ActivityResult ar = 3391 mInstrumentation.execStartActivity( 3392 this, mMainThread.getApplicationThread(), mToken, fragment, 3393 intent, requestCode); 3394 if (ar != null) { 3395 mMainThread.sendActivityResult( 3396 mToken, fragment.mWho, requestCode, 3397 ar.getResultCode(), ar.getResultData()); 3398 } 3399 } 3400 3401 /** 3402 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3403 * taking a IntentSender; see 3404 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3405 * for more information. 3406 */ 3407 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3408 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3409 int extraFlags) 3410 throws IntentSender.SendIntentException { 3411 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3412 flagsMask, flagsValues, child); 3413 } 3414 3415 /** 3416 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3417 * or {@link #finish} to specify an explicit transition animation to 3418 * perform next. 3419 * @param enterAnim A resource ID of the animation resource to use for 3420 * the incoming activity. Use 0 for no animation. 3421 * @param exitAnim A resource ID of the animation resource to use for 3422 * the outgoing activity. Use 0 for no animation. 3423 */ 3424 public void overridePendingTransition(int enterAnim, int exitAnim) { 3425 try { 3426 ActivityManagerNative.getDefault().overridePendingTransition( 3427 mToken, getPackageName(), enterAnim, exitAnim); 3428 } catch (RemoteException e) { 3429 } 3430 } 3431 3432 /** 3433 * Call this to set the result that your activity will return to its 3434 * caller. 3435 * 3436 * @param resultCode The result code to propagate back to the originating 3437 * activity, often RESULT_CANCELED or RESULT_OK 3438 * 3439 * @see #RESULT_CANCELED 3440 * @see #RESULT_OK 3441 * @see #RESULT_FIRST_USER 3442 * @see #setResult(int, Intent) 3443 */ 3444 public final void setResult(int resultCode) { 3445 synchronized (this) { 3446 mResultCode = resultCode; 3447 mResultData = null; 3448 } 3449 } 3450 3451 /** 3452 * Call this to set the result that your activity will return to its 3453 * caller. 3454 * 3455 * @param resultCode The result code to propagate back to the originating 3456 * activity, often RESULT_CANCELED or RESULT_OK 3457 * @param data The data to propagate back to the originating activity. 3458 * 3459 * @see #RESULT_CANCELED 3460 * @see #RESULT_OK 3461 * @see #RESULT_FIRST_USER 3462 * @see #setResult(int) 3463 */ 3464 public final void setResult(int resultCode, Intent data) { 3465 synchronized (this) { 3466 mResultCode = resultCode; 3467 mResultData = data; 3468 } 3469 } 3470 3471 /** 3472 * Return the name of the package that invoked this activity. This is who 3473 * the data in {@link #setResult setResult()} will be sent to. You can 3474 * use this information to validate that the recipient is allowed to 3475 * receive the data. 3476 * 3477 * <p>Note: if the calling activity is not expecting a result (that is it 3478 * did not use the {@link #startActivityForResult} 3479 * form that includes a request code), then the calling package will be 3480 * null. 3481 * 3482 * @return The package of the activity that will receive your 3483 * reply, or null if none. 3484 */ 3485 public String getCallingPackage() { 3486 try { 3487 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3488 } catch (RemoteException e) { 3489 return null; 3490 } 3491 } 3492 3493 /** 3494 * Return the name of the activity that invoked this activity. This is 3495 * who the data in {@link #setResult setResult()} will be sent to. You 3496 * can use this information to validate that the recipient is allowed to 3497 * receive the data. 3498 * 3499 * <p>Note: if the calling activity is not expecting a result (that is it 3500 * did not use the {@link #startActivityForResult} 3501 * form that includes a request code), then the calling package will be 3502 * null. 3503 * 3504 * @return String The full name of the activity that will receive your 3505 * reply, or null if none. 3506 */ 3507 public ComponentName getCallingActivity() { 3508 try { 3509 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3510 } catch (RemoteException e) { 3511 return null; 3512 } 3513 } 3514 3515 /** 3516 * Control whether this activity's main window is visible. This is intended 3517 * only for the special case of an activity that is not going to show a 3518 * UI itself, but can't just finish prior to onResume() because it needs 3519 * to wait for a service binding or such. Setting this to false allows 3520 * you to prevent your UI from being shown during that time. 3521 * 3522 * <p>The default value for this is taken from the 3523 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3524 */ 3525 public void setVisible(boolean visible) { 3526 if (mVisibleFromClient != visible) { 3527 mVisibleFromClient = visible; 3528 if (mVisibleFromServer) { 3529 if (visible) makeVisible(); 3530 else mDecor.setVisibility(View.INVISIBLE); 3531 } 3532 } 3533 } 3534 3535 void makeVisible() { 3536 if (!mWindowAdded) { 3537 ViewManager wm = getWindowManager(); 3538 wm.addView(mDecor, getWindow().getAttributes()); 3539 mWindowAdded = true; 3540 } 3541 mDecor.setVisibility(View.VISIBLE); 3542 } 3543 3544 /** 3545 * Check to see whether this activity is in the process of finishing, 3546 * either because you called {@link #finish} on it or someone else 3547 * has requested that it finished. This is often used in 3548 * {@link #onPause} to determine whether the activity is simply pausing or 3549 * completely finishing. 3550 * 3551 * @return If the activity is finishing, returns true; else returns false. 3552 * 3553 * @see #finish 3554 */ 3555 public boolean isFinishing() { 3556 return mFinished; 3557 } 3558 3559 /** 3560 * Check to see whether this activity is in the process of being destroyed in order to be 3561 * recreated with a new configuration. This is often used in 3562 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3563 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3564 * 3565 * @return If the activity is being torn down in order to be recreated with a new configuration, 3566 * returns true; else returns false. 3567 */ 3568 public boolean isChangingConfigurations() { 3569 return mChangingConfigurations; 3570 } 3571 3572 /** 3573 * Cause this Activity to be recreated with a new instance. This results 3574 * in essentially the same flow as when the Activity is created due to 3575 * a configuration change -- the current instance will go through its 3576 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3577 */ 3578 public void recreate() { 3579 if (mParent != null) { 3580 throw new IllegalStateException("Can only be called on top-level activity"); 3581 } 3582 if (Looper.myLooper() != mMainThread.getLooper()) { 3583 throw new IllegalStateException("Must be called from main thread"); 3584 } 3585 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3586 } 3587 3588 /** 3589 * Call this when your activity is done and should be closed. The 3590 * ActivityResult is propagated back to whoever launched you via 3591 * onActivityResult(). 3592 */ 3593 public void finish() { 3594 if (mParent == null) { 3595 int resultCode; 3596 Intent resultData; 3597 synchronized (this) { 3598 resultCode = mResultCode; 3599 resultData = mResultData; 3600 } 3601 if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken); 3602 try { 3603 if (ActivityManagerNative.getDefault() 3604 .finishActivity(mToken, resultCode, resultData)) { 3605 mFinished = true; 3606 } 3607 } catch (RemoteException e) { 3608 // Empty 3609 } 3610 } else { 3611 mParent.finishFromChild(this); 3612 } 3613 } 3614 3615 /** 3616 * This is called when a child activity of this one calls its 3617 * {@link #finish} method. The default implementation simply calls 3618 * finish() on this activity (the parent), finishing the entire group. 3619 * 3620 * @param child The activity making the call. 3621 * 3622 * @see #finish 3623 */ 3624 public void finishFromChild(Activity child) { 3625 finish(); 3626 } 3627 3628 /** 3629 * Force finish another activity that you had previously started with 3630 * {@link #startActivityForResult}. 3631 * 3632 * @param requestCode The request code of the activity that you had 3633 * given to startActivityForResult(). If there are multiple 3634 * activities started with this request code, they 3635 * will all be finished. 3636 */ 3637 public void finishActivity(int requestCode) { 3638 if (mParent == null) { 3639 try { 3640 ActivityManagerNative.getDefault() 3641 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3642 } catch (RemoteException e) { 3643 // Empty 3644 } 3645 } else { 3646 mParent.finishActivityFromChild(this, requestCode); 3647 } 3648 } 3649 3650 /** 3651 * This is called when a child activity of this one calls its 3652 * finishActivity(). 3653 * 3654 * @param child The activity making the call. 3655 * @param requestCode Request code that had been used to start the 3656 * activity. 3657 */ 3658 public void finishActivityFromChild(Activity child, int requestCode) { 3659 try { 3660 ActivityManagerNative.getDefault() 3661 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3662 } catch (RemoteException e) { 3663 // Empty 3664 } 3665 } 3666 3667 /** 3668 * Called when an activity you launched exits, giving you the requestCode 3669 * you started it with, the resultCode it returned, and any additional 3670 * data from it. The <var>resultCode</var> will be 3671 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3672 * didn't return any result, or crashed during its operation. 3673 * 3674 * <p>You will receive this call immediately before onResume() when your 3675 * activity is re-starting. 3676 * 3677 * @param requestCode The integer request code originally supplied to 3678 * startActivityForResult(), allowing you to identify who this 3679 * result came from. 3680 * @param resultCode The integer result code returned by the child activity 3681 * through its setResult(). 3682 * @param data An Intent, which can return result data to the caller 3683 * (various data can be attached to Intent "extras"). 3684 * 3685 * @see #startActivityForResult 3686 * @see #createPendingResult 3687 * @see #setResult(int) 3688 */ 3689 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3690 } 3691 3692 /** 3693 * Create a new PendingIntent object which you can hand to others 3694 * for them to use to send result data back to your 3695 * {@link #onActivityResult} callback. The created object will be either 3696 * one-shot (becoming invalid after a result is sent back) or multiple 3697 * (allowing any number of results to be sent through it). 3698 * 3699 * @param requestCode Private request code for the sender that will be 3700 * associated with the result data when it is returned. The sender can not 3701 * modify this value, allowing you to identify incoming results. 3702 * @param data Default data to supply in the result, which may be modified 3703 * by the sender. 3704 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3705 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3706 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3707 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3708 * or any of the flags as supported by 3709 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3710 * of the intent that can be supplied when the actual send happens. 3711 * 3712 * @return Returns an existing or new PendingIntent matching the given 3713 * parameters. May return null only if 3714 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3715 * supplied. 3716 * 3717 * @see PendingIntent 3718 */ 3719 public PendingIntent createPendingResult(int requestCode, Intent data, 3720 int flags) { 3721 String packageName = getPackageName(); 3722 try { 3723 IIntentSender target = 3724 ActivityManagerNative.getDefault().getIntentSender( 3725 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3726 mParent == null ? mToken : mParent.mToken, 3727 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3728 return target != null ? new PendingIntent(target) : null; 3729 } catch (RemoteException e) { 3730 // Empty 3731 } 3732 return null; 3733 } 3734 3735 /** 3736 * Change the desired orientation of this activity. If the activity 3737 * is currently in the foreground or otherwise impacting the screen 3738 * orientation, the screen will immediately be changed (possibly causing 3739 * the activity to be restarted). Otherwise, this will be used the next 3740 * time the activity is visible. 3741 * 3742 * @param requestedOrientation An orientation constant as used in 3743 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3744 */ 3745 public void setRequestedOrientation(int requestedOrientation) { 3746 if (mParent == null) { 3747 try { 3748 ActivityManagerNative.getDefault().setRequestedOrientation( 3749 mToken, requestedOrientation); 3750 } catch (RemoteException e) { 3751 // Empty 3752 } 3753 } else { 3754 mParent.setRequestedOrientation(requestedOrientation); 3755 } 3756 } 3757 3758 /** 3759 * Return the current requested orientation of the activity. This will 3760 * either be the orientation requested in its component's manifest, or 3761 * the last requested orientation given to 3762 * {@link #setRequestedOrientation(int)}. 3763 * 3764 * @return Returns an orientation constant as used in 3765 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3766 */ 3767 public int getRequestedOrientation() { 3768 if (mParent == null) { 3769 try { 3770 return ActivityManagerNative.getDefault() 3771 .getRequestedOrientation(mToken); 3772 } catch (RemoteException e) { 3773 // Empty 3774 } 3775 } else { 3776 return mParent.getRequestedOrientation(); 3777 } 3778 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3779 } 3780 3781 /** 3782 * Return the identifier of the task this activity is in. This identifier 3783 * will remain the same for the lifetime of the activity. 3784 * 3785 * @return Task identifier, an opaque integer. 3786 */ 3787 public int getTaskId() { 3788 try { 3789 return ActivityManagerNative.getDefault() 3790 .getTaskForActivity(mToken, false); 3791 } catch (RemoteException e) { 3792 return -1; 3793 } 3794 } 3795 3796 /** 3797 * Return whether this activity is the root of a task. The root is the 3798 * first activity in a task. 3799 * 3800 * @return True if this is the root activity, else false. 3801 */ 3802 public boolean isTaskRoot() { 3803 try { 3804 return ActivityManagerNative.getDefault() 3805 .getTaskForActivity(mToken, true) >= 0; 3806 } catch (RemoteException e) { 3807 return false; 3808 } 3809 } 3810 3811 /** 3812 * Move the task containing this activity to the back of the activity 3813 * stack. The activity's order within the task is unchanged. 3814 * 3815 * @param nonRoot If false then this only works if the activity is the root 3816 * of a task; if true it will work for any activity in 3817 * a task. 3818 * 3819 * @return If the task was moved (or it was already at the 3820 * back) true is returned, else false. 3821 */ 3822 public boolean moveTaskToBack(boolean nonRoot) { 3823 try { 3824 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3825 mToken, nonRoot); 3826 } catch (RemoteException e) { 3827 // Empty 3828 } 3829 return false; 3830 } 3831 3832 /** 3833 * Returns class name for this activity with the package prefix removed. 3834 * This is the default name used to read and write settings. 3835 * 3836 * @return The local class name. 3837 */ 3838 public String getLocalClassName() { 3839 final String pkg = getPackageName(); 3840 final String cls = mComponent.getClassName(); 3841 int packageLen = pkg.length(); 3842 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3843 || cls.charAt(packageLen) != '.') { 3844 return cls; 3845 } 3846 return cls.substring(packageLen+1); 3847 } 3848 3849 /** 3850 * Returns complete component name of this activity. 3851 * 3852 * @return Returns the complete component name for this activity 3853 */ 3854 public ComponentName getComponentName() 3855 { 3856 return mComponent; 3857 } 3858 3859 /** 3860 * Retrieve a {@link SharedPreferences} object for accessing preferences 3861 * that are private to this activity. This simply calls the underlying 3862 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3863 * class name as the preferences name. 3864 * 3865 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3866 * operation, {@link #MODE_WORLD_READABLE} and 3867 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3868 * 3869 * @return Returns the single SharedPreferences instance that can be used 3870 * to retrieve and modify the preference values. 3871 */ 3872 public SharedPreferences getPreferences(int mode) { 3873 return getSharedPreferences(getLocalClassName(), mode); 3874 } 3875 3876 private void ensureSearchManager() { 3877 if (mSearchManager != null) { 3878 return; 3879 } 3880 3881 mSearchManager = new SearchManager(this, null); 3882 } 3883 3884 @Override 3885 public Object getSystemService(String name) { 3886 if (getBaseContext() == null) { 3887 throw new IllegalStateException( 3888 "System services not available to Activities before onCreate()"); 3889 } 3890 3891 if (WINDOW_SERVICE.equals(name)) { 3892 return mWindowManager; 3893 } else if (SEARCH_SERVICE.equals(name)) { 3894 ensureSearchManager(); 3895 return mSearchManager; 3896 } 3897 return super.getSystemService(name); 3898 } 3899 3900 /** 3901 * Change the title associated with this activity. If this is a 3902 * top-level activity, the title for its window will change. If it 3903 * is an embedded activity, the parent can do whatever it wants 3904 * with it. 3905 */ 3906 public void setTitle(CharSequence title) { 3907 mTitle = title; 3908 onTitleChanged(title, mTitleColor); 3909 3910 if (mParent != null) { 3911 mParent.onChildTitleChanged(this, title); 3912 } 3913 } 3914 3915 /** 3916 * Change the title associated with this activity. If this is a 3917 * top-level activity, the title for its window will change. If it 3918 * is an embedded activity, the parent can do whatever it wants 3919 * with it. 3920 */ 3921 public void setTitle(int titleId) { 3922 setTitle(getText(titleId)); 3923 } 3924 3925 public void setTitleColor(int textColor) { 3926 mTitleColor = textColor; 3927 onTitleChanged(mTitle, textColor); 3928 } 3929 3930 public final CharSequence getTitle() { 3931 return mTitle; 3932 } 3933 3934 public final int getTitleColor() { 3935 return mTitleColor; 3936 } 3937 3938 protected void onTitleChanged(CharSequence title, int color) { 3939 if (mTitleReady) { 3940 final Window win = getWindow(); 3941 if (win != null) { 3942 win.setTitle(title); 3943 if (color != 0) { 3944 win.setTitleColor(color); 3945 } 3946 } 3947 } 3948 } 3949 3950 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 3951 } 3952 3953 /** 3954 * Sets the visibility of the progress bar in the title. 3955 * <p> 3956 * In order for the progress bar to be shown, the feature must be requested 3957 * via {@link #requestWindowFeature(int)}. 3958 * 3959 * @param visible Whether to show the progress bars in the title. 3960 */ 3961 public final void setProgressBarVisibility(boolean visible) { 3962 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 3963 Window.PROGRESS_VISIBILITY_OFF); 3964 } 3965 3966 /** 3967 * Sets the visibility of the indeterminate progress bar in the title. 3968 * <p> 3969 * In order for the progress bar to be shown, the feature must be requested 3970 * via {@link #requestWindowFeature(int)}. 3971 * 3972 * @param visible Whether to show the progress bars in the title. 3973 */ 3974 public final void setProgressBarIndeterminateVisibility(boolean visible) { 3975 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 3976 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 3977 } 3978 3979 /** 3980 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 3981 * is always indeterminate). 3982 * <p> 3983 * In order for the progress bar to be shown, the feature must be requested 3984 * via {@link #requestWindowFeature(int)}. 3985 * 3986 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 3987 */ 3988 public final void setProgressBarIndeterminate(boolean indeterminate) { 3989 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 3990 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 3991 } 3992 3993 /** 3994 * Sets the progress for the progress bars in the title. 3995 * <p> 3996 * In order for the progress bar to be shown, the feature must be requested 3997 * via {@link #requestWindowFeature(int)}. 3998 * 3999 * @param progress The progress for the progress bar. Valid ranges are from 4000 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4001 * bar will be completely filled and will fade out. 4002 */ 4003 public final void setProgress(int progress) { 4004 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4005 } 4006 4007 /** 4008 * Sets the secondary progress for the progress bar in the title. This 4009 * progress is drawn between the primary progress (set via 4010 * {@link #setProgress(int)} and the background. It can be ideal for media 4011 * scenarios such as showing the buffering progress while the default 4012 * progress shows the play progress. 4013 * <p> 4014 * In order for the progress bar to be shown, the feature must be requested 4015 * via {@link #requestWindowFeature(int)}. 4016 * 4017 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4018 * 0 to 10000 (both inclusive). 4019 */ 4020 public final void setSecondaryProgress(int secondaryProgress) { 4021 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4022 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4023 } 4024 4025 /** 4026 * Suggests an audio stream whose volume should be changed by the hardware 4027 * volume controls. 4028 * <p> 4029 * The suggested audio stream will be tied to the window of this Activity. 4030 * If the Activity is switched, the stream set here is no longer the 4031 * suggested stream. The client does not need to save and restore the old 4032 * suggested stream value in onPause and onResume. 4033 * 4034 * @param streamType The type of the audio stream whose volume should be 4035 * changed by the hardware volume controls. It is not guaranteed that 4036 * the hardware volume controls will always change this stream's 4037 * volume (for example, if a call is in progress, its stream's volume 4038 * may be changed instead). To reset back to the default, use 4039 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4040 */ 4041 public final void setVolumeControlStream(int streamType) { 4042 getWindow().setVolumeControlStream(streamType); 4043 } 4044 4045 /** 4046 * Gets the suggested audio stream whose volume should be changed by the 4047 * harwdare volume controls. 4048 * 4049 * @return The suggested audio stream type whose volume should be changed by 4050 * the hardware volume controls. 4051 * @see #setVolumeControlStream(int) 4052 */ 4053 public final int getVolumeControlStream() { 4054 return getWindow().getVolumeControlStream(); 4055 } 4056 4057 /** 4058 * Runs the specified action on the UI thread. If the current thread is the UI 4059 * thread, then the action is executed immediately. If the current thread is 4060 * not the UI thread, the action is posted to the event queue of the UI thread. 4061 * 4062 * @param action the action to run on the UI thread 4063 */ 4064 public final void runOnUiThread(Runnable action) { 4065 if (Thread.currentThread() != mUiThread) { 4066 mHandler.post(action); 4067 } else { 4068 action.run(); 4069 } 4070 } 4071 4072 /** 4073 * Standard implementation of 4074 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4075 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4076 * This implementation does nothing and is for 4077 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4078 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4079 * 4080 * @see android.view.LayoutInflater#createView 4081 * @see android.view.Window#getLayoutInflater 4082 */ 4083 public View onCreateView(String name, Context context, AttributeSet attrs) { 4084 return null; 4085 } 4086 4087 /** 4088 * Standard implementation of 4089 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4090 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4091 * This implementation handles <fragment> tags to embed fragments inside 4092 * of the activity. 4093 * 4094 * @see android.view.LayoutInflater#createView 4095 * @see android.view.Window#getLayoutInflater 4096 */ 4097 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4098 if (!"fragment".equals(name)) { 4099 return onCreateView(name, context, attrs); 4100 } 4101 4102 String fname = attrs.getAttributeValue(null, "class"); 4103 TypedArray a = 4104 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4105 if (fname == null) { 4106 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4107 } 4108 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4109 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4110 a.recycle(); 4111 4112 int containerId = parent != null ? parent.getId() : 0; 4113 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4114 throw new IllegalArgumentException(attrs.getPositionDescription() 4115 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4116 } 4117 4118 // If we restored from a previous state, we may already have 4119 // instantiated this fragment from the state and should use 4120 // that instance instead of making a new one. 4121 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4122 if (fragment == null && tag != null) { 4123 fragment = mFragments.findFragmentByTag(tag); 4124 } 4125 if (fragment == null && containerId != View.NO_ID) { 4126 fragment = mFragments.findFragmentById(containerId); 4127 } 4128 4129 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4130 + Integer.toHexString(id) + " fname=" + fname 4131 + " existing=" + fragment); 4132 if (fragment == null) { 4133 fragment = Fragment.instantiate(this, fname); 4134 fragment.mFromLayout = true; 4135 fragment.mFragmentId = id != 0 ? id : containerId; 4136 fragment.mContainerId = containerId; 4137 fragment.mTag = tag; 4138 fragment.mInLayout = true; 4139 fragment.mImmediateActivity = this; 4140 fragment.mFragmentManager = mFragments; 4141 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4142 mFragments.addFragment(fragment, true); 4143 4144 } else if (fragment.mInLayout) { 4145 // A fragment already exists and it is not one we restored from 4146 // previous state. 4147 throw new IllegalArgumentException(attrs.getPositionDescription() 4148 + ": Duplicate id 0x" + Integer.toHexString(id) 4149 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4150 + " with another fragment for " + fname); 4151 } else { 4152 // This fragment was retained from a previous instance; get it 4153 // going now. 4154 fragment.mInLayout = true; 4155 fragment.mImmediateActivity = this; 4156 // If this fragment is newly instantiated (either right now, or 4157 // from last saved state), then give it the attributes to 4158 // initialize itself. 4159 if (!fragment.mRetaining) { 4160 fragment.onInflate(attrs, fragment.mSavedFragmentState); 4161 } 4162 mFragments.moveToState(fragment); 4163 } 4164 4165 if (fragment.mView == null) { 4166 throw new IllegalStateException("Fragment " + fname 4167 + " did not create a view."); 4168 } 4169 if (id != 0) { 4170 fragment.mView.setId(id); 4171 } 4172 if (fragment.mView.getTag() == null) { 4173 fragment.mView.setTag(tag); 4174 } 4175 return fragment.mView; 4176 } 4177 4178 /** 4179 * Print the Activity's state into the given stream. This gets invoked if 4180 * you run "adb shell dumpsys activity <activity_component_name>". 4181 * 4182 * @param prefix Desired prefix to prepend at each line of output. 4183 * @param fd The raw file descriptor that the dump is being sent to. 4184 * @param writer The PrintWriter to which you should dump your state. This will be 4185 * closed for you after you return. 4186 * @param args additional arguments to the dump request. 4187 */ 4188 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4189 writer.print(prefix); writer.print("Local Activity "); 4190 writer.print(Integer.toHexString(System.identityHashCode(this))); 4191 writer.println(" State:"); 4192 String innerPrefix = prefix + " "; 4193 writer.print(innerPrefix); writer.print("mResumed="); 4194 writer.print(mResumed); writer.print(" mStopped="); 4195 writer.print(mStopped); writer.print(" mFinished="); 4196 writer.println(mFinished); 4197 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4198 writer.println(mLoadersStarted); 4199 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4200 writer.println(mChangingConfigurations); 4201 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4202 writer.println(mCurrentConfig); 4203 if (mLoaderManager != null) { 4204 writer.print(prefix); writer.print("Loader Manager "); 4205 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4206 writer.println(":"); 4207 mLoaderManager.dump(prefix + " ", fd, writer, args); 4208 } 4209 mFragments.dump(prefix, fd, writer, args); 4210 } 4211 4212 /** 4213 * Bit indicating that this activity is "immersive" and should not be 4214 * interrupted by notifications if possible. 4215 * 4216 * This value is initially set by the manifest property 4217 * <code>android:immersive</code> but may be changed at runtime by 4218 * {@link #setImmersive}. 4219 * 4220 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4221 * @hide 4222 */ 4223 public boolean isImmersive() { 4224 try { 4225 return ActivityManagerNative.getDefault().isImmersive(mToken); 4226 } catch (RemoteException e) { 4227 return false; 4228 } 4229 } 4230 4231 /** 4232 * Adjust the current immersive mode setting. 4233 * 4234 * Note that changing this value will have no effect on the activity's 4235 * {@link android.content.pm.ActivityInfo} structure; that is, if 4236 * <code>android:immersive</code> is set to <code>true</code> 4237 * in the application's manifest entry for this activity, the {@link 4238 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4239 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4240 * FLAG_IMMERSIVE} bit set. 4241 * 4242 * @see #isImmersive 4243 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4244 * @hide 4245 */ 4246 public void setImmersive(boolean i) { 4247 try { 4248 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4249 } catch (RemoteException e) { 4250 // pass 4251 } 4252 } 4253 4254 /** 4255 * Start an action mode. 4256 * 4257 * @param callback Callback that will manage lifecycle events for this context mode 4258 * @return The ContextMode that was started, or null if it was canceled 4259 * 4260 * @see ActionMode 4261 */ 4262 public ActionMode startActionMode(ActionMode.Callback callback) { 4263 return mWindow.getDecorView().startActionMode(callback); 4264 } 4265 4266 /** 4267 * Give the Activity a chance to control the UI for an action mode requested 4268 * by the system. 4269 * 4270 * <p>Note: If you are looking for a notification callback that an action mode 4271 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4272 * 4273 * @param callback The callback that should control the new action mode 4274 * @return The new action mode, or <code>null</code> if the activity does not want to 4275 * provide special handling for this action mode. (It will be handled by the system.) 4276 */ 4277 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4278 initActionBar(); 4279 if (mActionBar != null) { 4280 return mActionBar.startActionMode(callback); 4281 } 4282 return null; 4283 } 4284 4285 /** 4286 * Notifies the Activity that an action mode has been started. 4287 * Activity subclasses overriding this method should call the superclass implementation. 4288 * 4289 * @param mode The new action mode. 4290 */ 4291 public void onActionModeStarted(ActionMode mode) { 4292 } 4293 4294 /** 4295 * Notifies the activity that an action mode has finished. 4296 * Activity subclasses overriding this method should call the superclass implementation. 4297 * 4298 * @param mode The action mode that just finished. 4299 */ 4300 public void onActionModeFinished(ActionMode mode) { 4301 } 4302 4303 // ------------------ Internal API ------------------ 4304 4305 final void setParent(Activity parent) { 4306 mParent = parent; 4307 } 4308 4309 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4310 Application application, Intent intent, ActivityInfo info, CharSequence title, 4311 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4312 Configuration config) { 4313 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4314 lastNonConfigurationInstances, config); 4315 } 4316 4317 final void attach(Context context, ActivityThread aThread, 4318 Instrumentation instr, IBinder token, int ident, 4319 Application application, Intent intent, ActivityInfo info, 4320 CharSequence title, Activity parent, String id, 4321 NonConfigurationInstances lastNonConfigurationInstances, 4322 Configuration config) { 4323 attachBaseContext(context); 4324 4325 mFragments.attachActivity(this); 4326 4327 mWindow = PolicyManager.makeNewWindow(this); 4328 mWindow.setCallback(this); 4329 mWindow.getLayoutInflater().setPrivateFactory(this); 4330 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4331 mWindow.setSoftInputMode(info.softInputMode); 4332 } 4333 mUiThread = Thread.currentThread(); 4334 4335 mMainThread = aThread; 4336 mInstrumentation = instr; 4337 mToken = token; 4338 mIdent = ident; 4339 mApplication = application; 4340 mIntent = intent; 4341 mComponent = intent.getComponent(); 4342 mActivityInfo = info; 4343 mTitle = title; 4344 mParent = parent; 4345 mEmbeddedID = id; 4346 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4347 4348 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4349 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4350 if (mParent != null) { 4351 mWindow.setContainer(mParent.getWindow()); 4352 } 4353 mWindowManager = mWindow.getWindowManager(); 4354 mCurrentConfig = config; 4355 } 4356 4357 final IBinder getActivityToken() { 4358 return mParent != null ? mParent.getActivityToken() : mToken; 4359 } 4360 4361 final void performCreate(Bundle icicle) { 4362 onCreate(icicle); 4363 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4364 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4365 mFragments.dispatchActivityCreated(); 4366 } 4367 4368 final void performStart() { 4369 mFragments.noteStateNotSaved(); 4370 mCalled = false; 4371 mFragments.execPendingActions(); 4372 mInstrumentation.callActivityOnStart(this); 4373 if (!mCalled) { 4374 throw new SuperNotCalledException( 4375 "Activity " + mComponent.toShortString() + 4376 " did not call through to super.onStart()"); 4377 } 4378 mFragments.dispatchStart(); 4379 if (mAllLoaderManagers != null) { 4380 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4381 mAllLoaderManagers.valueAt(i).finishRetain(); 4382 } 4383 } 4384 } 4385 4386 final void performRestart() { 4387 mFragments.noteStateNotSaved(); 4388 4389 synchronized (mManagedCursors) { 4390 final int N = mManagedCursors.size(); 4391 for (int i=0; i<N; i++) { 4392 ManagedCursor mc = mManagedCursors.get(i); 4393 if (mc.mReleased || mc.mUpdated) { 4394 if (!mc.mCursor.requery()) { 4395 throw new IllegalStateException( 4396 "trying to requery an already closed cursor"); 4397 } 4398 mc.mReleased = false; 4399 mc.mUpdated = false; 4400 } 4401 } 4402 } 4403 4404 if (mStopped) { 4405 mStopped = false; 4406 mCalled = false; 4407 mInstrumentation.callActivityOnRestart(this); 4408 if (!mCalled) { 4409 throw new SuperNotCalledException( 4410 "Activity " + mComponent.toShortString() + 4411 " did not call through to super.onRestart()"); 4412 } 4413 performStart(); 4414 } 4415 } 4416 4417 final void performResume() { 4418 performRestart(); 4419 4420 mFragments.execPendingActions(); 4421 4422 mLastNonConfigurationInstances = null; 4423 4424 mCalled = false; 4425 // mResumed is set by the instrumentation 4426 mInstrumentation.callActivityOnResume(this); 4427 if (!mCalled) { 4428 throw new SuperNotCalledException( 4429 "Activity " + mComponent.toShortString() + 4430 " did not call through to super.onResume()"); 4431 } 4432 4433 // Now really resume, and install the current status bar and menu. 4434 mCalled = false; 4435 4436 mFragments.dispatchResume(); 4437 mFragments.execPendingActions(); 4438 4439 onPostResume(); 4440 if (!mCalled) { 4441 throw new SuperNotCalledException( 4442 "Activity " + mComponent.toShortString() + 4443 " did not call through to super.onPostResume()"); 4444 } 4445 } 4446 4447 final void performPause() { 4448 mFragments.dispatchPause(); 4449 mCalled = false; 4450 onPause(); 4451 mResumed = false; 4452 if (!mCalled && getApplicationInfo().targetSdkVersion 4453 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4454 throw new SuperNotCalledException( 4455 "Activity " + mComponent.toShortString() + 4456 " did not call through to super.onPause()"); 4457 } 4458 mResumed = false; 4459 } 4460 4461 final void performUserLeaving() { 4462 onUserInteraction(); 4463 onUserLeaveHint(); 4464 } 4465 4466 final void performStop() { 4467 if (mLoadersStarted) { 4468 mLoadersStarted = false; 4469 if (mLoaderManager != null) { 4470 if (!mChangingConfigurations) { 4471 mLoaderManager.doStop(); 4472 } else { 4473 mLoaderManager.doRetain(); 4474 } 4475 } 4476 } 4477 4478 if (!mStopped) { 4479 if (mWindow != null) { 4480 mWindow.closeAllPanels(); 4481 } 4482 4483 mFragments.dispatchStop(); 4484 4485 mCalled = false; 4486 mInstrumentation.callActivityOnStop(this); 4487 if (!mCalled) { 4488 throw new SuperNotCalledException( 4489 "Activity " + mComponent.toShortString() + 4490 " did not call through to super.onStop()"); 4491 } 4492 4493 synchronized (mManagedCursors) { 4494 final int N = mManagedCursors.size(); 4495 for (int i=0; i<N; i++) { 4496 ManagedCursor mc = mManagedCursors.get(i); 4497 if (!mc.mReleased) { 4498 mc.mCursor.deactivate(); 4499 mc.mReleased = true; 4500 } 4501 } 4502 } 4503 4504 mStopped = true; 4505 } 4506 mResumed = false; 4507 4508 // Check for Activity leaks, if enabled. 4509 StrictMode.conditionallyCheckInstanceCounts(); 4510 } 4511 4512 final void performDestroy() { 4513 mWindow.destroy(); 4514 mFragments.dispatchDestroy(); 4515 onDestroy(); 4516 if (mLoaderManager != null) { 4517 mLoaderManager.doDestroy(); 4518 } 4519 } 4520 4521 /** 4522 * @hide 4523 */ 4524 public final boolean isResumed() { 4525 return mResumed; 4526 } 4527 4528 void dispatchActivityResult(String who, int requestCode, 4529 int resultCode, Intent data) { 4530 if (Config.LOGV) Log.v( 4531 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4532 + ", resCode=" + resultCode + ", data=" + data); 4533 mFragments.noteStateNotSaved(); 4534 if (who == null) { 4535 onActivityResult(requestCode, resultCode, data); 4536 } else { 4537 Fragment frag = mFragments.findFragmentByWho(who); 4538 if (frag != null) { 4539 frag.onActivityResult(requestCode, resultCode, data); 4540 } 4541 } 4542 } 4543} 4544