Activity.java revision 7e442837702a6e026c73a01fedb62c222b63cfc9
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.EventLog; 55import android.util.Log; 56import android.util.SparseArray; 57import android.view.ActionMode; 58import android.view.ContextMenu; 59import android.view.ContextMenu.ContextMenuInfo; 60import android.view.ContextThemeWrapper; 61import android.view.KeyEvent; 62import android.view.LayoutInflater; 63import android.view.Menu; 64import android.view.MenuInflater; 65import android.view.MenuItem; 66import android.view.MotionEvent; 67import android.view.View; 68import android.view.WindowManagerImpl; 69import android.view.View.OnCreateContextMenuListener; 70import android.view.ViewGroup; 71import android.view.ViewGroup.LayoutParams; 72import android.view.ViewManager; 73import android.view.Window; 74import android.view.WindowManager; 75import android.view.accessibility.AccessibilityEvent; 76import android.widget.AdapterView; 77 78import java.io.FileDescriptor; 79import java.io.PrintWriter; 80import java.util.ArrayList; 81import java.util.HashMap; 82 83/** 84 * An activity is a single, focused thing that the user can do. Almost all 85 * activities interact with the user, so the Activity class takes care of 86 * creating a window for you in which you can place your UI with 87 * {@link #setContentView}. While activities are often presented to the user 88 * as full-screen windows, they can also be used in other ways: as floating 89 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 90 * or embedded inside of another activity (using {@link ActivityGroup}). 91 * 92 * There are two methods almost all subclasses of Activity will implement: 93 * 94 * <ul> 95 * <li> {@link #onCreate} is where you initialize your activity. Most 96 * importantly, here you will usually call {@link #setContentView(int)} 97 * with a layout resource defining your UI, and using {@link #findViewById} 98 * to retrieve the widgets in that UI that you need to interact with 99 * programmatically. 100 * 101 * <li> {@link #onPause} is where you deal with the user leaving your 102 * activity. Most importantly, any changes made by the user should at this 103 * point be committed (usually to the 104 * {@link android.content.ContentProvider} holding the data). 105 * </ul> 106 * 107 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 108 * activity classes must have a corresponding 109 * {@link android.R.styleable#AndroidManifestActivity <activity>} 110 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 111 * 112 * <p>The Activity class is an important part of an application's overall lifecycle, 113 * and the way activities are launched and put together is a fundamental 114 * part of the platform's application model. For a detailed perspective on the structure of an 115 * Android application and how activities behave, please read the 116 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 117 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 118 * documents.</p> 119 * 120 * <p>You can also find a detailed discussion about how to create activities in the 121 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 122 * document.</p> 123 * 124 * <p>Topics covered here: 125 * <ol> 126 * <li><a href="#Fragments">Fragments</a> 127 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 128 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 129 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 130 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 131 * <li><a href="#Permissions">Permissions</a> 132 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 133 * </ol> 134 * 135 * <a name="Fragments"></a> 136 * <h3>Fragments</h3> 137 * 138 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 139 * implementations can make use of the {@link Fragment} class to better 140 * modularize their code, build more sophisticated user interfaces for larger 141 * screens, and help scale their application between small and large screens. 142 * 143 * <a name="ActivityLifecycle"></a> 144 * <h3>Activity Lifecycle</h3> 145 * 146 * <p>Activities in the system are managed as an <em>activity stack</em>. 147 * When a new activity is started, it is placed on the top of the stack 148 * and becomes the running activity -- the previous activity always remains 149 * below it in the stack, and will not come to the foreground again until 150 * the new activity exits.</p> 151 * 152 * <p>An activity has essentially four states:</p> 153 * <ul> 154 * <li> If an activity in the foreground of the screen (at the top of 155 * the stack), 156 * it is <em>active</em> or <em>running</em>. </li> 157 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 158 * or transparent activity has focus on top of your activity), it 159 * is <em>paused</em>. A paused activity is completely alive (it 160 * maintains all state and member information and remains attached to 161 * the window manager), but can be killed by the system in extreme 162 * low memory situations. 163 * <li>If an activity is completely obscured by another activity, 164 * it is <em>stopped</em>. It still retains all state and member information, 165 * however, it is no longer visible to the user so its window is hidden 166 * and it will often be killed by the system when memory is needed 167 * elsewhere.</li> 168 * <li>If an activity is paused or stopped, the system can drop the activity 169 * from memory by either asking it to finish, or simply killing its 170 * process. When it is displayed again to the user, it must be 171 * completely restarted and restored to its previous state.</li> 172 * </ul> 173 * 174 * <p>The following diagram shows the important state paths of an Activity. 175 * The square rectangles represent callback methods you can implement to 176 * perform operations when the Activity moves between states. The colored 177 * ovals are major states the Activity can be in.</p> 178 * 179 * <p><img src="../../../images/activity_lifecycle.png" 180 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 181 * 182 * <p>There are three key loops you may be interested in monitoring within your 183 * activity: 184 * 185 * <ul> 186 * <li>The <b>entire lifetime</b> of an activity happens between the first call 187 * to {@link android.app.Activity#onCreate} through to a single final call 188 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 189 * of "global" state in onCreate(), and release all remaining resources in 190 * onDestroy(). For example, if it has a thread running in the background 191 * to download data from the network, it may create that thread in onCreate() 192 * and then stop the thread in onDestroy(). 193 * 194 * <li>The <b>visible lifetime</b> of an activity happens between a call to 195 * {@link android.app.Activity#onStart} until a corresponding call to 196 * {@link android.app.Activity#onStop}. During this time the user can see the 197 * activity on-screen, though it may not be in the foreground and interacting 198 * with the user. Between these two methods you can maintain resources that 199 * are needed to show the activity to the user. For example, you can register 200 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 201 * that impact your UI, and unregister it in onStop() when the user an no 202 * longer see what you are displaying. The onStart() and onStop() methods 203 * can be called multiple times, as the activity becomes visible and hidden 204 * to the user. 205 * 206 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 207 * {@link android.app.Activity#onResume} until a corresponding call to 208 * {@link android.app.Activity#onPause}. During this time the activity is 209 * in front of all other activities and interacting with the user. An activity 210 * can frequently go between the resumed and paused states -- for example when 211 * the device goes to sleep, when an activity result is delivered, when a new 212 * intent is delivered -- so the code in these methods should be fairly 213 * lightweight. 214 * </ul> 215 * 216 * <p>The entire lifecycle of an activity is defined by the following 217 * Activity methods. All of these are hooks that you can override 218 * to do appropriate work when the activity changes state. All 219 * activities will implement {@link android.app.Activity#onCreate} 220 * to do their initial setup; many will also implement 221 * {@link android.app.Activity#onPause} to commit changes to data and 222 * otherwise prepare to stop interacting with the user. You should always 223 * call up to your superclass when implementing these methods.</p> 224 * 225 * </p> 226 * <pre class="prettyprint"> 227 * public class Activity extends ApplicationContext { 228 * protected void onCreate(Bundle savedInstanceState); 229 * 230 * protected void onStart(); 231 * 232 * protected void onRestart(); 233 * 234 * protected void onResume(); 235 * 236 * protected void onPause(); 237 * 238 * protected void onStop(); 239 * 240 * protected void onDestroy(); 241 * } 242 * </pre> 243 * 244 * <p>In general the movement through an activity's lifecycle looks like 245 * this:</p> 246 * 247 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 248 * <colgroup align="left" span="3" /> 249 * <colgroup align="left" /> 250 * <colgroup align="center" /> 251 * <colgroup align="center" /> 252 * 253 * <thead> 254 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 255 * </thead> 256 * 257 * <tbody> 258 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 259 * <td>Called when the activity is first created. 260 * This is where you should do all of your normal static set up: 261 * create views, bind data to lists, etc. This method also 262 * provides you with a Bundle containing the activity's previously 263 * frozen state, if there was one. 264 * <p>Always followed by <code>onStart()</code>.</td> 265 * <td align="center">No</td> 266 * <td align="center"><code>onStart()</code></td> 267 * </tr> 268 * 269 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 270 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 271 * <td>Called after your activity has been stopped, prior to it being 272 * started again. 273 * <p>Always followed by <code>onStart()</code></td> 274 * <td align="center">No</td> 275 * <td align="center"><code>onStart()</code></td> 276 * </tr> 277 * 278 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 279 * <td>Called when the activity is becoming visible to the user. 280 * <p>Followed by <code>onResume()</code> if the activity comes 281 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 282 * <td align="center">No</td> 283 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 284 * </tr> 285 * 286 * <tr><td rowspan="2" style="border-left: none;"> </td> 287 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 288 * <td>Called when the activity will start 289 * interacting with the user. At this point your activity is at 290 * the top of the activity stack, with user input going to it. 291 * <p>Always followed by <code>onPause()</code>.</td> 292 * <td align="center">No</td> 293 * <td align="center"><code>onPause()</code></td> 294 * </tr> 295 * 296 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 297 * <td>Called when the system is about to start resuming a previous 298 * activity. This is typically used to commit unsaved changes to 299 * persistent data, stop animations and other things that may be consuming 300 * CPU, etc. Implementations of this method must be very quick because 301 * the next activity will not be resumed until this method returns. 302 * <p>Followed by either <code>onResume()</code> if the activity 303 * returns back to the front, or <code>onStop()</code> if it becomes 304 * invisible to the user.</td> 305 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 306 * <td align="center"><code>onResume()</code> or<br> 307 * <code>onStop()</code></td> 308 * </tr> 309 * 310 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 311 * <td>Called when the activity is no longer visible to the user, because 312 * another activity has been resumed and is covering this one. This 313 * may happen either because a new activity is being started, an existing 314 * one is being brought in front of this one, or this one is being 315 * destroyed. 316 * <p>Followed by either <code>onRestart()</code> if 317 * this activity is coming back to interact with the user, or 318 * <code>onDestroy()</code> if this activity is going away.</td> 319 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 320 * <td align="center"><code>onRestart()</code> or<br> 321 * <code>onDestroy()</code></td> 322 * </tr> 323 * 324 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 325 * <td>The final call you receive before your 326 * activity is destroyed. This can happen either because the 327 * activity is finishing (someone called {@link Activity#finish} on 328 * it, or because the system is temporarily destroying this 329 * instance of the activity to save space. You can distinguish 330 * between these two scenarios with the {@link 331 * Activity#isFinishing} method.</td> 332 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 333 * <td align="center"><em>nothing</em></td> 334 * </tr> 335 * </tbody> 336 * </table> 337 * 338 * <p>Note the "Killable" column in the above table -- for those methods that 339 * are marked as being killable, after that method returns the process hosting the 340 * activity may killed by the system <em>at any time</em> without another line 341 * of its code being executed. Because of this, you should use the 342 * {@link #onPause} method to write any persistent data (such as user edits) 343 * to storage. In addition, the method 344 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 345 * in such a background state, allowing you to save away any dynamic instance 346 * state in your activity into the given Bundle, to be later received in 347 * {@link #onCreate} if the activity needs to be re-created. 348 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 349 * section for more information on how the lifecycle of a process is tied 350 * to the activities it is hosting. Note that it is important to save 351 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 352 * because the latter is not part of the lifecycle callbacks, so will not 353 * be called in every situation as described in its documentation.</p> 354 * 355 * <p class="note">Be aware that these semantics will change slightly between 356 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 357 * vs. those targeting prior platforms. Starting with Honeycomb, an application 358 * is not in the killable state until its {@link #onStop} has returned. This 359 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 360 * safely called after {@link #onPause()} and allows and application to safely 361 * wait until {@link #onStop()} to save persistent state.</p> 362 * 363 * <p>For those methods that are not marked as being killable, the activity's 364 * process will not be killed by the system starting from the time the method 365 * is called and continuing after it returns. Thus an activity is in the killable 366 * state, for example, between after <code>onPause()</code> to the start of 367 * <code>onResume()</code>.</p> 368 * 369 * <a name="ConfigurationChanges"></a> 370 * <h3>Configuration Changes</h3> 371 * 372 * <p>If the configuration of the device (as defined by the 373 * {@link Configuration Resources.Configuration} class) changes, 374 * then anything displaying a user interface will need to update to match that 375 * configuration. Because Activity is the primary mechanism for interacting 376 * with the user, it includes special support for handling configuration 377 * changes.</p> 378 * 379 * <p>Unless you specify otherwise, a configuration change (such as a change 380 * in screen orientation, language, input devices, etc) will cause your 381 * current activity to be <em>destroyed</em>, going through the normal activity 382 * lifecycle process of {@link #onPause}, 383 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 384 * had been in the foreground or visible to the user, once {@link #onDestroy} is 385 * called in that instance then a new instance of the activity will be 386 * created, with whatever savedInstanceState the previous instance had generated 387 * from {@link #onSaveInstanceState}.</p> 388 * 389 * <p>This is done because any application resource, 390 * including layout files, can change based on any configuration value. Thus 391 * the only safe way to handle a configuration change is to re-retrieve all 392 * resources, including layouts, drawables, and strings. Because activities 393 * must already know how to save their state and re-create themselves from 394 * that state, this is a convenient way to have an activity restart itself 395 * with a new configuration.</p> 396 * 397 * <p>In some special cases, you may want to bypass restarting of your 398 * activity based on one or more types of configuration changes. This is 399 * done with the {@link android.R.attr#configChanges android:configChanges} 400 * attribute in its manifest. For any types of configuration changes you say 401 * that you handle there, you will receive a call to your current activity's 402 * {@link #onConfigurationChanged} method instead of being restarted. If 403 * a configuration change involves any that you do not handle, however, the 404 * activity will still be restarted and {@link #onConfigurationChanged} 405 * will not be called.</p> 406 * 407 * <a name="StartingActivities"></a> 408 * <h3>Starting Activities and Getting Results</h3> 409 * 410 * <p>The {@link android.app.Activity#startActivity} 411 * method is used to start a 412 * new activity, which will be placed at the top of the activity stack. It 413 * takes a single argument, an {@link android.content.Intent Intent}, 414 * which describes the activity 415 * to be executed.</p> 416 * 417 * <p>Sometimes you want to get a result back from an activity when it 418 * ends. For example, you may start an activity that lets the user pick 419 * a person in a list of contacts; when it ends, it returns the person 420 * that was selected. To do this, you call the 421 * {@link android.app.Activity#startActivityForResult(Intent, int)} 422 * version with a second integer parameter identifying the call. The result 423 * will come back through your {@link android.app.Activity#onActivityResult} 424 * method.</p> 425 * 426 * <p>When an activity exits, it can call 427 * {@link android.app.Activity#setResult(int)} 428 * to return data back to its parent. It must always supply a result code, 429 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 430 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 431 * return back an Intent containing any additional data it wants. All of this 432 * information appears back on the 433 * parent's <code>Activity.onActivityResult()</code>, along with the integer 434 * identifier it originally supplied.</p> 435 * 436 * <p>If a child activity fails for any reason (such as crashing), the parent 437 * activity will receive a result with the code RESULT_CANCELED.</p> 438 * 439 * <pre class="prettyprint"> 440 * public class MyActivity extends Activity { 441 * ... 442 * 443 * static final int PICK_CONTACT_REQUEST = 0; 444 * 445 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 446 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 447 * // When the user center presses, let them pick a contact. 448 * startActivityForResult( 449 * new Intent(Intent.ACTION_PICK, 450 * new Uri("content://contacts")), 451 * PICK_CONTACT_REQUEST); 452 * return true; 453 * } 454 * return false; 455 * } 456 * 457 * protected void onActivityResult(int requestCode, int resultCode, 458 * Intent data) { 459 * if (requestCode == PICK_CONTACT_REQUEST) { 460 * if (resultCode == RESULT_OK) { 461 * // A contact was picked. Here we will just display it 462 * // to the user. 463 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 464 * } 465 * } 466 * } 467 * } 468 * </pre> 469 * 470 * <a name="SavingPersistentState"></a> 471 * <h3>Saving Persistent State</h3> 472 * 473 * <p>There are generally two kinds of persistent state than an activity 474 * will deal with: shared document-like data (typically stored in a SQLite 475 * database using a {@linkplain android.content.ContentProvider content provider}) 476 * and internal state such as user preferences.</p> 477 * 478 * <p>For content provider data, we suggest that activities use a 479 * "edit in place" user model. That is, any edits a user makes are effectively 480 * made immediately without requiring an additional confirmation step. 481 * Supporting this model is generally a simple matter of following two rules:</p> 482 * 483 * <ul> 484 * <li> <p>When creating a new document, the backing database entry or file for 485 * it is created immediately. For example, if the user chooses to write 486 * a new e-mail, a new entry for that e-mail is created as soon as they 487 * start entering data, so that if they go to any other activity after 488 * that point this e-mail will now appear in the list of drafts.</p> 489 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 490 * commit to the backing content provider or file any changes the user 491 * has made. This ensures that those changes will be seen by any other 492 * activity that is about to run. You will probably want to commit 493 * your data even more aggressively at key times during your 494 * activity's lifecycle: for example before starting a new 495 * activity, before finishing your own activity, when the user 496 * switches between input fields, etc.</p> 497 * </ul> 498 * 499 * <p>This model is designed to prevent data loss when a user is navigating 500 * between activities, and allows the system to safely kill an activity (because 501 * system resources are needed somewhere else) at any time after it has been 502 * paused. Note this implies 503 * that the user pressing BACK from your activity does <em>not</em> 504 * mean "cancel" -- it means to leave the activity with its current contents 505 * saved away. Canceling edits in an activity must be provided through 506 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 507 * 508 * <p>See the {@linkplain android.content.ContentProvider content package} for 509 * more information about content providers. These are a key aspect of how 510 * different activities invoke and propagate data between themselves.</p> 511 * 512 * <p>The Activity class also provides an API for managing internal persistent state 513 * associated with an activity. This can be used, for example, to remember 514 * the user's preferred initial display in a calendar (day view or week view) 515 * or the user's default home page in a web browser.</p> 516 * 517 * <p>Activity persistent state is managed 518 * with the method {@link #getPreferences}, 519 * allowing you to retrieve and 520 * modify a set of name/value pairs associated with the activity. To use 521 * preferences that are shared across multiple application components 522 * (activities, receivers, services, providers), you can use the underlying 523 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 524 * to retrieve a preferences 525 * object stored under a specific name. 526 * (Note that it is not possible to share settings data across application 527 * packages -- for that you will need a content provider.)</p> 528 * 529 * <p>Here is an excerpt from a calendar activity that stores the user's 530 * preferred view mode in its persistent settings:</p> 531 * 532 * <pre class="prettyprint"> 533 * public class CalendarActivity extends Activity { 534 * ... 535 * 536 * static final int DAY_VIEW_MODE = 0; 537 * static final int WEEK_VIEW_MODE = 1; 538 * 539 * private SharedPreferences mPrefs; 540 * private int mCurViewMode; 541 * 542 * protected void onCreate(Bundle savedInstanceState) { 543 * super.onCreate(savedInstanceState); 544 * 545 * SharedPreferences mPrefs = getSharedPreferences(); 546 * mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE); 547 * } 548 * 549 * protected void onPause() { 550 * super.onPause(); 551 * 552 * SharedPreferences.Editor ed = mPrefs.edit(); 553 * ed.putInt("view_mode", mCurViewMode); 554 * ed.commit(); 555 * } 556 * } 557 * </pre> 558 * 559 * <a name="Permissions"></a> 560 * <h3>Permissions</h3> 561 * 562 * <p>The ability to start a particular Activity can be enforced when it is 563 * declared in its 564 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 565 * tag. By doing so, other applications will need to declare a corresponding 566 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 567 * element in their own manifest to be able to start that activity. 568 * 569 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 570 * document for more information on permissions and security in general. 571 * 572 * <a name="ProcessLifecycle"></a> 573 * <h3>Process Lifecycle</h3> 574 * 575 * <p>The Android system attempts to keep application process around for as 576 * long as possible, but eventually will need to remove old processes when 577 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 578 * Lifecycle</a>, the decision about which process to remove is intimately 579 * tied to the state of the user's interaction with it. In general, there 580 * are four states a process can be in based on the activities running in it, 581 * listed here in order of importance. The system will kill less important 582 * processes (the last ones) before it resorts to killing more important 583 * processes (the first ones). 584 * 585 * <ol> 586 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 587 * that the user is currently interacting with) is considered the most important. 588 * Its process will only be killed as a last resort, if it uses more memory 589 * than is available on the device. Generally at this point the device has 590 * reached a memory paging state, so this is required in order to keep the user 591 * interface responsive. 592 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 593 * but not in the foreground, such as one sitting behind a foreground dialog) 594 * is considered extremely important and will not be killed unless that is 595 * required to keep the foreground activity running. 596 * <li> <p>A <b>background activity</b> (an activity that is not visible to 597 * the user and has been paused) is no longer critical, so the system may 598 * safely kill its process to reclaim memory for other foreground or 599 * visible processes. If its process needs to be killed, when the user navigates 600 * back to the activity (making it visible on the screen again), its 601 * {@link #onCreate} method will be called with the savedInstanceState it had previously 602 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 603 * state as the user last left it. 604 * <li> <p>An <b>empty process</b> is one hosting no activities or other 605 * application components (such as {@link Service} or 606 * {@link android.content.BroadcastReceiver} classes). These are killed very 607 * quickly by the system as memory becomes low. For this reason, any 608 * background operation you do outside of an activity must be executed in the 609 * context of an activity BroadcastReceiver or Service to ensure that the system 610 * knows it needs to keep your process around. 611 * </ol> 612 * 613 * <p>Sometimes an Activity may need to do a long-running operation that exists 614 * independently of the activity lifecycle itself. An example may be a camera 615 * application that allows you to upload a picture to a web site. The upload 616 * may take a long time, and the application should allow the user to leave 617 * the application will it is executing. To accomplish this, your Activity 618 * should start a {@link Service} in which the upload takes place. This allows 619 * the system to properly prioritize your process (considering it to be more 620 * important than other non-visible applications) for the duration of the 621 * upload, independent of whether the original activity is paused, stopped, 622 * or finished. 623 */ 624public class Activity extends ContextThemeWrapper 625 implements LayoutInflater.Factory2, 626 Window.Callback, KeyEvent.Callback, 627 OnCreateContextMenuListener, ComponentCallbacks { 628 private static final String TAG = "Activity"; 629 630 /** Standard activity result: operation canceled. */ 631 public static final int RESULT_CANCELED = 0; 632 /** Standard activity result: operation succeeded. */ 633 public static final int RESULT_OK = -1; 634 /** Start of user-defined activity results. */ 635 public static final int RESULT_FIRST_USER = 1; 636 637 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 638 private static final String FRAGMENTS_TAG = "android:fragments"; 639 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 640 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 641 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 642 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 643 644 private static class ManagedDialog { 645 Dialog mDialog; 646 Bundle mArgs; 647 } 648 private SparseArray<ManagedDialog> mManagedDialogs; 649 650 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 651 private Instrumentation mInstrumentation; 652 private IBinder mToken; 653 private int mIdent; 654 /*package*/ String mEmbeddedID; 655 private Application mApplication; 656 /*package*/ Intent mIntent; 657 private ComponentName mComponent; 658 /*package*/ ActivityInfo mActivityInfo; 659 /*package*/ ActivityThread mMainThread; 660 Activity mParent; 661 boolean mCalled; 662 boolean mCheckedForLoaderManager; 663 boolean mLoadersStarted; 664 /*package*/ boolean mResumed; 665 private boolean mStopped; 666 boolean mFinished; 667 boolean mStartedActivity; 668 /** true if the activity is going through a transient pause */ 669 /*package*/ boolean mTemporaryPause = false; 670 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 671 /*package*/ boolean mChangingConfigurations = false; 672 /*package*/ int mConfigChangeFlags; 673 /*package*/ Configuration mCurrentConfig; 674 private SearchManager mSearchManager; 675 676 static final class NonConfigurationInstances { 677 Object activity; 678 HashMap<String, Object> children; 679 ArrayList<Fragment> fragments; 680 SparseArray<LoaderManagerImpl> loaders; 681 } 682 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 683 684 private Window mWindow; 685 686 private WindowManager mWindowManager; 687 /*package*/ View mDecor = null; 688 /*package*/ boolean mWindowAdded = false; 689 /*package*/ boolean mVisibleFromServer = false; 690 /*package*/ boolean mVisibleFromClient = true; 691 /*package*/ ActionBarImpl mActionBar = null; 692 693 private CharSequence mTitle; 694 private int mTitleColor = 0; 695 696 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 697 698 SparseArray<LoaderManagerImpl> mAllLoaderManagers; 699 LoaderManagerImpl mLoaderManager; 700 701 private static final class ManagedCursor { 702 ManagedCursor(Cursor cursor) { 703 mCursor = cursor; 704 mReleased = false; 705 mUpdated = false; 706 } 707 708 private final Cursor mCursor; 709 private boolean mReleased; 710 private boolean mUpdated; 711 } 712 private final ArrayList<ManagedCursor> mManagedCursors = 713 new ArrayList<ManagedCursor>(); 714 715 // protected by synchronized (this) 716 int mResultCode = RESULT_CANCELED; 717 Intent mResultData = null; 718 719 private boolean mTitleReady = false; 720 721 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 722 private SpannableStringBuilder mDefaultKeySsb = null; 723 724 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 725 726 private final Object mInstanceTracker = StrictMode.trackActivity(this); 727 728 private Thread mUiThread; 729 final Handler mHandler = new Handler(); 730 731 /** Return the intent that started this activity. */ 732 public Intent getIntent() { 733 return mIntent; 734 } 735 736 /** 737 * Change the intent returned by {@link #getIntent}. This holds a 738 * reference to the given intent; it does not copy it. Often used in 739 * conjunction with {@link #onNewIntent}. 740 * 741 * @param newIntent The new Intent object to return from getIntent 742 * 743 * @see #getIntent 744 * @see #onNewIntent 745 */ 746 public void setIntent(Intent newIntent) { 747 mIntent = newIntent; 748 } 749 750 /** Return the application that owns this activity. */ 751 public final Application getApplication() { 752 return mApplication; 753 } 754 755 /** Is this activity embedded inside of another activity? */ 756 public final boolean isChild() { 757 return mParent != null; 758 } 759 760 /** Return the parent activity if this view is an embedded child. */ 761 public final Activity getParent() { 762 return mParent; 763 } 764 765 /** Retrieve the window manager for showing custom windows. */ 766 public WindowManager getWindowManager() { 767 return mWindowManager; 768 } 769 770 /** 771 * Retrieve the current {@link android.view.Window} for the activity. 772 * This can be used to directly access parts of the Window API that 773 * are not available through Activity/Screen. 774 * 775 * @return Window The current window, or null if the activity is not 776 * visual. 777 */ 778 public Window getWindow() { 779 return mWindow; 780 } 781 782 /** 783 * Return the LoaderManager for this fragment, creating it if needed. 784 */ 785 public LoaderManager getLoaderManager() { 786 if (mLoaderManager != null) { 787 return mLoaderManager; 788 } 789 mCheckedForLoaderManager = true; 790 mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); 791 return mLoaderManager; 792 } 793 794 LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { 795 if (mAllLoaderManagers == null) { 796 mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); 797 } 798 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 799 if (lm == null) { 800 if (create) { 801 lm = new LoaderManagerImpl(this, started); 802 mAllLoaderManagers.put(index, lm); 803 } 804 } else { 805 lm.updateActivity(this); 806 } 807 return lm; 808 } 809 810 /** 811 * Calls {@link android.view.Window#getCurrentFocus} on the 812 * Window of this Activity to return the currently focused view. 813 * 814 * @return View The current View with focus or null. 815 * 816 * @see #getWindow 817 * @see android.view.Window#getCurrentFocus 818 */ 819 public View getCurrentFocus() { 820 return mWindow != null ? mWindow.getCurrentFocus() : null; 821 } 822 823 /** 824 * Called when the activity is starting. This is where most initialization 825 * should go: calling {@link #setContentView(int)} to inflate the 826 * activity's UI, using {@link #findViewById} to programmatically interact 827 * with widgets in the UI, calling 828 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 829 * cursors for data being displayed, etc. 830 * 831 * <p>You can call {@link #finish} from within this function, in 832 * which case onDestroy() will be immediately called without any of the rest 833 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 834 * {@link #onPause}, etc) executing. 835 * 836 * <p><em>Derived classes must call through to the super class's 837 * implementation of this method. If they do not, an exception will be 838 * thrown.</em></p> 839 * 840 * @param savedInstanceState If the activity is being re-initialized after 841 * previously being shut down then this Bundle contains the data it most 842 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 843 * 844 * @see #onStart 845 * @see #onSaveInstanceState 846 * @see #onRestoreInstanceState 847 * @see #onPostCreate 848 */ 849 protected void onCreate(Bundle savedInstanceState) { 850 if (mLastNonConfigurationInstances != null) { 851 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 852 } 853 if (savedInstanceState != null) { 854 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 855 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 856 ? mLastNonConfigurationInstances.fragments : null); 857 } 858 mFragments.dispatchCreate(); 859 mCalled = true; 860 } 861 862 /** 863 * The hook for {@link ActivityThread} to restore the state of this activity. 864 * 865 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 866 * {@link #restoreManagedDialogs(android.os.Bundle)}. 867 * 868 * @param savedInstanceState contains the saved state 869 */ 870 final void performRestoreInstanceState(Bundle savedInstanceState) { 871 onRestoreInstanceState(savedInstanceState); 872 restoreManagedDialogs(savedInstanceState); 873 } 874 875 /** 876 * This method is called after {@link #onStart} when the activity is 877 * being re-initialized from a previously saved state, given here in 878 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 879 * to restore their state, but it is sometimes convenient to do it here 880 * after all of the initialization has been done or to allow subclasses to 881 * decide whether to use your default implementation. The default 882 * implementation of this method performs a restore of any view state that 883 * had previously been frozen by {@link #onSaveInstanceState}. 884 * 885 * <p>This method is called between {@link #onStart} and 886 * {@link #onPostCreate}. 887 * 888 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 889 * 890 * @see #onCreate 891 * @see #onPostCreate 892 * @see #onResume 893 * @see #onSaveInstanceState 894 */ 895 protected void onRestoreInstanceState(Bundle savedInstanceState) { 896 if (mWindow != null) { 897 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 898 if (windowState != null) { 899 mWindow.restoreHierarchyState(windowState); 900 } 901 } 902 } 903 904 /** 905 * Restore the state of any saved managed dialogs. 906 * 907 * @param savedInstanceState The bundle to restore from. 908 */ 909 private void restoreManagedDialogs(Bundle savedInstanceState) { 910 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 911 if (b == null) { 912 return; 913 } 914 915 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 916 final int numDialogs = ids.length; 917 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 918 for (int i = 0; i < numDialogs; i++) { 919 final Integer dialogId = ids[i]; 920 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 921 if (dialogState != null) { 922 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 923 // so tell createDialog() not to do it, otherwise we get an exception 924 final ManagedDialog md = new ManagedDialog(); 925 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 926 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 927 if (md.mDialog != null) { 928 mManagedDialogs.put(dialogId, md); 929 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 930 md.mDialog.onRestoreInstanceState(dialogState); 931 } 932 } 933 } 934 } 935 936 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 937 final Dialog dialog = onCreateDialog(dialogId, args); 938 if (dialog == null) { 939 return null; 940 } 941 dialog.dispatchOnCreate(state); 942 return dialog; 943 } 944 945 private static String savedDialogKeyFor(int key) { 946 return SAVED_DIALOG_KEY_PREFIX + key; 947 } 948 949 private static String savedDialogArgsKeyFor(int key) { 950 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 951 } 952 953 /** 954 * Called when activity start-up is complete (after {@link #onStart} 955 * and {@link #onRestoreInstanceState} have been called). Applications will 956 * generally not implement this method; it is intended for system 957 * classes to do final initialization after application code has run. 958 * 959 * <p><em>Derived classes must call through to the super class's 960 * implementation of this method. If they do not, an exception will be 961 * thrown.</em></p> 962 * 963 * @param savedInstanceState If the activity is being re-initialized after 964 * previously being shut down then this Bundle contains the data it most 965 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 966 * @see #onCreate 967 */ 968 protected void onPostCreate(Bundle savedInstanceState) { 969 if (!isChild()) { 970 mTitleReady = true; 971 onTitleChanged(getTitle(), getTitleColor()); 972 } 973 mCalled = true; 974 } 975 976 /** 977 * Called after {@link #onCreate} — or after {@link #onRestart} when 978 * the activity had been stopped, but is now again being displayed to the 979 * user. It will be followed by {@link #onResume}. 980 * 981 * <p><em>Derived classes must call through to the super class's 982 * implementation of this method. If they do not, an exception will be 983 * thrown.</em></p> 984 * 985 * @see #onCreate 986 * @see #onStop 987 * @see #onResume 988 */ 989 protected void onStart() { 990 mCalled = true; 991 992 if (!mLoadersStarted) { 993 mLoadersStarted = true; 994 if (mLoaderManager != null) { 995 mLoaderManager.doStart(); 996 } else if (!mCheckedForLoaderManager) { 997 mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); 998 } 999 mCheckedForLoaderManager = true; 1000 } 1001 } 1002 1003 /** 1004 * Called after {@link #onStop} when the current activity is being 1005 * re-displayed to the user (the user has navigated back to it). It will 1006 * be followed by {@link #onStart} and then {@link #onResume}. 1007 * 1008 * <p>For activities that are using raw {@link Cursor} objects (instead of 1009 * creating them through 1010 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1011 * this is usually the place 1012 * where the cursor should be requeried (because you had deactivated it in 1013 * {@link #onStop}. 1014 * 1015 * <p><em>Derived classes must call through to the super class's 1016 * implementation of this method. If they do not, an exception will be 1017 * thrown.</em></p> 1018 * 1019 * @see #onStop 1020 * @see #onStart 1021 * @see #onResume 1022 */ 1023 protected void onRestart() { 1024 mCalled = true; 1025 } 1026 1027 /** 1028 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1029 * {@link #onPause}, for your activity to start interacting with the user. 1030 * This is a good place to begin animations, open exclusive-access devices 1031 * (such as the camera), etc. 1032 * 1033 * <p>Keep in mind that onResume is not the best indicator that your activity 1034 * is visible to the user; a system window such as the keyguard may be in 1035 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1036 * activity is visible to the user (for example, to resume a game). 1037 * 1038 * <p><em>Derived classes must call through to the super class's 1039 * implementation of this method. If they do not, an exception will be 1040 * thrown.</em></p> 1041 * 1042 * @see #onRestoreInstanceState 1043 * @see #onRestart 1044 * @see #onPostResume 1045 * @see #onPause 1046 */ 1047 protected void onResume() { 1048 mCalled = true; 1049 } 1050 1051 /** 1052 * Called when activity resume is complete (after {@link #onResume} has 1053 * been called). Applications will generally not implement this method; 1054 * it is intended for system classes to do final setup after application 1055 * resume code has run. 1056 * 1057 * <p><em>Derived classes must call through to the super class's 1058 * implementation of this method. If they do not, an exception will be 1059 * thrown.</em></p> 1060 * 1061 * @see #onResume 1062 */ 1063 protected void onPostResume() { 1064 final Window win = getWindow(); 1065 if (win != null) win.makeActive(); 1066 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1067 mCalled = true; 1068 } 1069 1070 /** 1071 * This is called for activities that set launchMode to "singleTop" in 1072 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1073 * flag when calling {@link #startActivity}. In either case, when the 1074 * activity is re-launched while at the top of the activity stack instead 1075 * of a new instance of the activity being started, onNewIntent() will be 1076 * called on the existing instance with the Intent that was used to 1077 * re-launch it. 1078 * 1079 * <p>An activity will always be paused before receiving a new intent, so 1080 * you can count on {@link #onResume} being called after this method. 1081 * 1082 * <p>Note that {@link #getIntent} still returns the original Intent. You 1083 * can use {@link #setIntent} to update it to this new Intent. 1084 * 1085 * @param intent The new intent that was started for the activity. 1086 * 1087 * @see #getIntent 1088 * @see #setIntent 1089 * @see #onResume 1090 */ 1091 protected void onNewIntent(Intent intent) { 1092 } 1093 1094 /** 1095 * The hook for {@link ActivityThread} to save the state of this activity. 1096 * 1097 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1098 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1099 * 1100 * @param outState The bundle to save the state to. 1101 */ 1102 final void performSaveInstanceState(Bundle outState) { 1103 onSaveInstanceState(outState); 1104 saveManagedDialogs(outState); 1105 } 1106 1107 /** 1108 * Called to retrieve per-instance state from an activity before being killed 1109 * so that the state can be restored in {@link #onCreate} or 1110 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1111 * will be passed to both). 1112 * 1113 * <p>This method is called before an activity may be killed so that when it 1114 * comes back some time in the future it can restore its state. For example, 1115 * if activity B is launched in front of activity A, and at some point activity 1116 * A is killed to reclaim resources, activity A will have a chance to save the 1117 * current state of its user interface via this method so that when the user 1118 * returns to activity A, the state of the user interface can be restored 1119 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1120 * 1121 * <p>Do not confuse this method with activity lifecycle callbacks such as 1122 * {@link #onPause}, which is always called when an activity is being placed 1123 * in the background or on its way to destruction, or {@link #onStop} which 1124 * is called before destruction. One example of when {@link #onPause} and 1125 * {@link #onStop} is called and not this method is when a user navigates back 1126 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1127 * on B because that particular instance will never be restored, so the 1128 * system avoids calling it. An example when {@link #onPause} is called and 1129 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1130 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1131 * killed during the lifetime of B since the state of the user interface of 1132 * A will stay intact. 1133 * 1134 * <p>The default implementation takes care of most of the UI per-instance 1135 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1136 * view in the hierarchy that has an id, and by saving the id of the currently 1137 * focused view (all of which is restored by the default implementation of 1138 * {@link #onRestoreInstanceState}). If you override this method to save additional 1139 * information not captured by each individual view, you will likely want to 1140 * call through to the default implementation, otherwise be prepared to save 1141 * all of the state of each view yourself. 1142 * 1143 * <p>If called, this method will occur before {@link #onStop}. There are 1144 * no guarantees about whether it will occur before or after {@link #onPause}. 1145 * 1146 * @param outState Bundle in which to place your saved state. 1147 * 1148 * @see #onCreate 1149 * @see #onRestoreInstanceState 1150 * @see #onPause 1151 */ 1152 protected void onSaveInstanceState(Bundle outState) { 1153 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1154 Parcelable p = mFragments.saveAllState(); 1155 if (p != null) { 1156 outState.putParcelable(FRAGMENTS_TAG, p); 1157 } 1158 } 1159 1160 /** 1161 * Save the state of any managed dialogs. 1162 * 1163 * @param outState place to store the saved state. 1164 */ 1165 private void saveManagedDialogs(Bundle outState) { 1166 if (mManagedDialogs == null) { 1167 return; 1168 } 1169 1170 final int numDialogs = mManagedDialogs.size(); 1171 if (numDialogs == 0) { 1172 return; 1173 } 1174 1175 Bundle dialogState = new Bundle(); 1176 1177 int[] ids = new int[mManagedDialogs.size()]; 1178 1179 // save each dialog's bundle, gather the ids 1180 for (int i = 0; i < numDialogs; i++) { 1181 final int key = mManagedDialogs.keyAt(i); 1182 ids[i] = key; 1183 final ManagedDialog md = mManagedDialogs.valueAt(i); 1184 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1185 if (md.mArgs != null) { 1186 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1187 } 1188 } 1189 1190 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1191 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1192 } 1193 1194 1195 /** 1196 * Called as part of the activity lifecycle when an activity is going into 1197 * the background, but has not (yet) been killed. The counterpart to 1198 * {@link #onResume}. 1199 * 1200 * <p>When activity B is launched in front of activity A, this callback will 1201 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1202 * so be sure to not do anything lengthy here. 1203 * 1204 * <p>This callback is mostly used for saving any persistent state the 1205 * activity is editing, to present a "edit in place" model to the user and 1206 * making sure nothing is lost if there are not enough resources to start 1207 * the new activity without first killing this one. This is also a good 1208 * place to do things like stop animations and other things that consume a 1209 * noticeable mount of CPU in order to make the switch to the next activity 1210 * as fast as possible, or to close resources that are exclusive access 1211 * such as the camera. 1212 * 1213 * <p>In situations where the system needs more memory it may kill paused 1214 * processes to reclaim resources. Because of this, you should be sure 1215 * that all of your state is saved by the time you return from 1216 * this function. In general {@link #onSaveInstanceState} is used to save 1217 * per-instance state in the activity and this method is used to store 1218 * global persistent data (in content providers, files, etc.) 1219 * 1220 * <p>After receiving this call you will usually receive a following call 1221 * to {@link #onStop} (after the next activity has been resumed and 1222 * displayed), however in some cases there will be a direct call back to 1223 * {@link #onResume} without going through the stopped state. 1224 * 1225 * <p><em>Derived classes must call through to the super class's 1226 * implementation of this method. If they do not, an exception will be 1227 * thrown.</em></p> 1228 * 1229 * @see #onResume 1230 * @see #onSaveInstanceState 1231 * @see #onStop 1232 */ 1233 protected void onPause() { 1234 mCalled = true; 1235 } 1236 1237 /** 1238 * Called as part of the activity lifecycle when an activity is about to go 1239 * into the background as the result of user choice. For example, when the 1240 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1241 * when an incoming phone call causes the in-call Activity to be automatically 1242 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1243 * the activity being interrupted. In cases when it is invoked, this method 1244 * is called right before the activity's {@link #onPause} callback. 1245 * 1246 * <p>This callback and {@link #onUserInteraction} are intended to help 1247 * activities manage status bar notifications intelligently; specifically, 1248 * for helping activities determine the proper time to cancel a notfication. 1249 * 1250 * @see #onUserInteraction() 1251 */ 1252 protected void onUserLeaveHint() { 1253 } 1254 1255 /** 1256 * Generate a new thumbnail for this activity. This method is called before 1257 * pausing the activity, and should draw into <var>outBitmap</var> the 1258 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1259 * can use the given <var>canvas</var>, which is configured to draw into the 1260 * bitmap, for rendering if desired. 1261 * 1262 * <p>The default implementation returns fails and does not draw a thumbnail; 1263 * this will result in the platform creating its own thumbnail if needed. 1264 * 1265 * @param outBitmap The bitmap to contain the thumbnail. 1266 * @param canvas Can be used to render into the bitmap. 1267 * 1268 * @return Return true if you have drawn into the bitmap; otherwise after 1269 * you return it will be filled with a default thumbnail. 1270 * 1271 * @see #onCreateDescription 1272 * @see #onSaveInstanceState 1273 * @see #onPause 1274 */ 1275 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1276 return false; 1277 } 1278 1279 /** 1280 * Generate a new description for this activity. This method is called 1281 * before pausing the activity and can, if desired, return some textual 1282 * description of its current state to be displayed to the user. 1283 * 1284 * <p>The default implementation returns null, which will cause you to 1285 * inherit the description from the previous activity. If all activities 1286 * return null, generally the label of the top activity will be used as the 1287 * description. 1288 * 1289 * @return A description of what the user is doing. It should be short and 1290 * sweet (only a few words). 1291 * 1292 * @see #onCreateThumbnail 1293 * @see #onSaveInstanceState 1294 * @see #onPause 1295 */ 1296 public CharSequence onCreateDescription() { 1297 return null; 1298 } 1299 1300 /** 1301 * Called when you are no longer visible to the user. You will next 1302 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1303 * depending on later user activity. 1304 * 1305 * <p>Note that this method may never be called, in low memory situations 1306 * where the system does not have enough memory to keep your activity's 1307 * process running after its {@link #onPause} method is called. 1308 * 1309 * <p><em>Derived classes must call through to the super class's 1310 * implementation of this method. If they do not, an exception will be 1311 * thrown.</em></p> 1312 * 1313 * @see #onRestart 1314 * @see #onResume 1315 * @see #onSaveInstanceState 1316 * @see #onDestroy 1317 */ 1318 protected void onStop() { 1319 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1320 mCalled = true; 1321 } 1322 1323 /** 1324 * Perform any final cleanup before an activity is destroyed. This can 1325 * happen either because the activity is finishing (someone called 1326 * {@link #finish} on it, or because the system is temporarily destroying 1327 * this instance of the activity to save space. You can distinguish 1328 * between these two scenarios with the {@link #isFinishing} method. 1329 * 1330 * <p><em>Note: do not count on this method being called as a place for 1331 * saving data! For example, if an activity is editing data in a content 1332 * provider, those edits should be committed in either {@link #onPause} or 1333 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1334 * free resources like threads that are associated with an activity, so 1335 * that a destroyed activity does not leave such things around while the 1336 * rest of its application is still running. There are situations where 1337 * the system will simply kill the activity's hosting process without 1338 * calling this method (or any others) in it, so it should not be used to 1339 * do things that are intended to remain around after the process goes 1340 * away. 1341 * 1342 * <p><em>Derived classes must call through to the super class's 1343 * implementation of this method. If they do not, an exception will be 1344 * thrown.</em></p> 1345 * 1346 * @see #onPause 1347 * @see #onStop 1348 * @see #finish 1349 * @see #isFinishing 1350 */ 1351 protected void onDestroy() { 1352 mCalled = true; 1353 1354 // dismiss any dialogs we are managing. 1355 if (mManagedDialogs != null) { 1356 final int numDialogs = mManagedDialogs.size(); 1357 for (int i = 0; i < numDialogs; i++) { 1358 final ManagedDialog md = mManagedDialogs.valueAt(i); 1359 if (md.mDialog.isShowing()) { 1360 md.mDialog.dismiss(); 1361 } 1362 } 1363 mManagedDialogs = null; 1364 } 1365 1366 // close any cursors we are managing. 1367 synchronized (mManagedCursors) { 1368 int numCursors = mManagedCursors.size(); 1369 for (int i = 0; i < numCursors; i++) { 1370 ManagedCursor c = mManagedCursors.get(i); 1371 if (c != null) { 1372 c.mCursor.close(); 1373 } 1374 } 1375 mManagedCursors.clear(); 1376 } 1377 1378 // Close any open search dialog 1379 if (mSearchManager != null) { 1380 mSearchManager.stopSearch(); 1381 } 1382 } 1383 1384 /** 1385 * Called by the system when the device configuration changes while your 1386 * activity is running. Note that this will <em>only</em> be called if 1387 * you have selected configurations you would like to handle with the 1388 * {@link android.R.attr#configChanges} attribute in your manifest. If 1389 * any configuration change occurs that is not selected to be reported 1390 * by that attribute, then instead of reporting it the system will stop 1391 * and restart the activity (to have it launched with the new 1392 * configuration). 1393 * 1394 * <p>At the time that this function has been called, your Resources 1395 * object will have been updated to return resource values matching the 1396 * new configuration. 1397 * 1398 * @param newConfig The new device configuration. 1399 */ 1400 public void onConfigurationChanged(Configuration newConfig) { 1401 mCalled = true; 1402 1403 if (mActionBar != null) { 1404 mActionBar.onConfigurationChanged(newConfig); 1405 } 1406 1407 mFragments.dispatchConfigurationChanged(newConfig); 1408 1409 if (mWindow != null) { 1410 // Pass the configuration changed event to the window 1411 mWindow.onConfigurationChanged(newConfig); 1412 } 1413 } 1414 1415 /** 1416 * If this activity is being destroyed because it can not handle a 1417 * configuration parameter being changed (and thus its 1418 * {@link #onConfigurationChanged(Configuration)} method is 1419 * <em>not</em> being called), then you can use this method to discover 1420 * the set of changes that have occurred while in the process of being 1421 * destroyed. Note that there is no guarantee that these will be 1422 * accurate (other changes could have happened at any time), so you should 1423 * only use this as an optimization hint. 1424 * 1425 * @return Returns a bit field of the configuration parameters that are 1426 * changing, as defined by the {@link android.content.res.Configuration} 1427 * class. 1428 */ 1429 public int getChangingConfigurations() { 1430 return mConfigChangeFlags; 1431 } 1432 1433 /** 1434 * @deprecated Use the new {@link Fragment} API 1435 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1436 * available on older platforms through the Android compatibility package. 1437 * 1438 * Retrieve the non-configuration instance data that was previously 1439 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1440 * be available from the initial {@link #onCreate} and 1441 * {@link #onStart} calls to the new instance, allowing you to extract 1442 * any useful dynamic state from the previous instance. 1443 * 1444 * <p>Note that the data you retrieve here should <em>only</em> be used 1445 * as an optimization for handling configuration changes. You should always 1446 * be able to handle getting a null pointer back, and an activity must 1447 * still be able to restore itself to its previous state (through the 1448 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1449 * function returns null. 1450 * 1451 * @return Returns the object previously returned by 1452 * {@link #onRetainNonConfigurationInstance()}. 1453 */ 1454 @Deprecated 1455 public Object getLastNonConfigurationInstance() { 1456 return mLastNonConfigurationInstances != null 1457 ? mLastNonConfigurationInstances.activity : null; 1458 } 1459 1460 /** 1461 * @deprecated Use the new {@link Fragment} API 1462 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1463 * available on older platforms through the Android compatibility package. 1464 * 1465 * Called by the system, as part of destroying an 1466 * activity due to a configuration change, when it is known that a new 1467 * instance will immediately be created for the new configuration. You 1468 * can return any object you like here, including the activity instance 1469 * itself, which can later be retrieved by calling 1470 * {@link #getLastNonConfigurationInstance()} in the new activity 1471 * instance. 1472 * 1473 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1474 * or later, consider instead using a {@link Fragment} with 1475 * {@link Fragment#setRetainInstance(boolean) 1476 * Fragment.setRetainInstance(boolean}.</em> 1477 * 1478 * <p>This function is called purely as an optimization, and you must 1479 * not rely on it being called. When it is called, a number of guarantees 1480 * will be made to help optimize configuration switching: 1481 * <ul> 1482 * <li> The function will be called between {@link #onStop} and 1483 * {@link #onDestroy}. 1484 * <li> A new instance of the activity will <em>always</em> be immediately 1485 * created after this one's {@link #onDestroy()} is called. In particular, 1486 * <em>no</em> messages will be dispatched during this time (when the returned 1487 * object does not have an activity to be associated with). 1488 * <li> The object you return here will <em>always</em> be available from 1489 * the {@link #getLastNonConfigurationInstance()} method of the following 1490 * activity instance as described there. 1491 * </ul> 1492 * 1493 * <p>These guarantees are designed so that an activity can use this API 1494 * to propagate extensive state from the old to new activity instance, from 1495 * loaded bitmaps, to network connections, to evenly actively running 1496 * threads. Note that you should <em>not</em> propagate any data that 1497 * may change based on the configuration, including any data loaded from 1498 * resources such as strings, layouts, or drawables. 1499 * 1500 * <p>The guarantee of no message handling during the switch to the next 1501 * activity simplifies use with active objects. For example if your retained 1502 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1503 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1504 * not be called from the call here until you execute the next instance's 1505 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1506 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1507 * running in a separate thread.) 1508 * 1509 * @return Return any Object holding the desired state to propagate to the 1510 * next activity instance. 1511 */ 1512 public Object onRetainNonConfigurationInstance() { 1513 return null; 1514 } 1515 1516 /** 1517 * Retrieve the non-configuration instance data that was previously 1518 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1519 * be available from the initial {@link #onCreate} and 1520 * {@link #onStart} calls to the new instance, allowing you to extract 1521 * any useful dynamic state from the previous instance. 1522 * 1523 * <p>Note that the data you retrieve here should <em>only</em> be used 1524 * as an optimization for handling configuration changes. You should always 1525 * be able to handle getting a null pointer back, and an activity must 1526 * still be able to restore itself to its previous state (through the 1527 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1528 * function returns null. 1529 * 1530 * @return Returns the object previously returned by 1531 * {@link #onRetainNonConfigurationChildInstances()} 1532 */ 1533 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1534 return mLastNonConfigurationInstances != null 1535 ? mLastNonConfigurationInstances.children : null; 1536 } 1537 1538 /** 1539 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1540 * it should return either a mapping from child activity id strings to arbitrary objects, 1541 * or null. This method is intended to be used by Activity framework subclasses that control a 1542 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1543 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1544 */ 1545 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1546 return null; 1547 } 1548 1549 NonConfigurationInstances retainNonConfigurationInstances() { 1550 Object activity = onRetainNonConfigurationInstance(); 1551 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1552 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1553 boolean retainLoaders = false; 1554 if (mAllLoaderManagers != null) { 1555 // prune out any loader managers that were already stopped and so 1556 // have nothing useful to retain. 1557 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 1558 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 1559 if (lm.mRetaining) { 1560 retainLoaders = true; 1561 } else { 1562 lm.doDestroy(); 1563 mAllLoaderManagers.removeAt(i); 1564 } 1565 } 1566 } 1567 if (activity == null && children == null && fragments == null && !retainLoaders) { 1568 return null; 1569 } 1570 1571 NonConfigurationInstances nci = new NonConfigurationInstances(); 1572 nci.activity = activity; 1573 nci.children = children; 1574 nci.fragments = fragments; 1575 nci.loaders = mAllLoaderManagers; 1576 return nci; 1577 } 1578 1579 public void onLowMemory() { 1580 mCalled = true; 1581 mFragments.dispatchLowMemory(); 1582 } 1583 1584 /** 1585 * Return the FragmentManager for interacting with fragments associated 1586 * with this activity. 1587 */ 1588 public FragmentManager getFragmentManager() { 1589 return mFragments; 1590 } 1591 1592 void invalidateFragmentIndex(int index) { 1593 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1594 if (mAllLoaderManagers != null) { 1595 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 1596 if (lm != null) { 1597 lm.doDestroy(); 1598 } 1599 mAllLoaderManagers.remove(index); 1600 } 1601 } 1602 1603 /** 1604 * Called when a Fragment is being attached to this activity, immediately 1605 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1606 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1607 */ 1608 public void onAttachFragment(Fragment fragment) { 1609 } 1610 1611 /** 1612 * Wrapper around 1613 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1614 * that gives the resulting {@link Cursor} to call 1615 * {@link #startManagingCursor} so that the activity will manage its 1616 * lifecycle for you. 1617 * 1618 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1619 * or later, consider instead using {@link LoaderManager} instead, available 1620 * via {@link #getLoaderManager()}.</em> 1621 * 1622 * @param uri The URI of the content provider to query. 1623 * @param projection List of columns to return. 1624 * @param selection SQL WHERE clause. 1625 * @param sortOrder SQL ORDER BY clause. 1626 * 1627 * @return The Cursor that was returned by query(). 1628 * 1629 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1630 * @see #startManagingCursor 1631 * @hide 1632 * 1633 * @deprecated Use {@link CursorLoader} instead. 1634 */ 1635 @Deprecated 1636 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1637 String sortOrder) { 1638 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1639 if (c != null) { 1640 startManagingCursor(c); 1641 } 1642 return c; 1643 } 1644 1645 /** 1646 * Wrapper around 1647 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1648 * that gives the resulting {@link Cursor} to call 1649 * {@link #startManagingCursor} so that the activity will manage its 1650 * lifecycle for you. 1651 * 1652 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1653 * or later, consider instead using {@link LoaderManager} instead, available 1654 * via {@link #getLoaderManager()}.</em> 1655 * 1656 * @param uri The URI of the content provider to query. 1657 * @param projection List of columns to return. 1658 * @param selection SQL WHERE clause. 1659 * @param selectionArgs The arguments to selection, if any ?s are pesent 1660 * @param sortOrder SQL ORDER BY clause. 1661 * 1662 * @return The Cursor that was returned by query(). 1663 * 1664 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1665 * @see #startManagingCursor 1666 * 1667 * @deprecated Use {@link CursorLoader} instead. 1668 */ 1669 @Deprecated 1670 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1671 String[] selectionArgs, String sortOrder) { 1672 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1673 if (c != null) { 1674 startManagingCursor(c); 1675 } 1676 return c; 1677 } 1678 1679 /** 1680 * @deprecated Use the new {@link android.content.CursorLoader} class with 1681 * {@link LoaderManager} instead; this is also 1682 * available on older platforms through the Android compatibility package. 1683 * 1684 * This method allows the activity to take care of managing the given 1685 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1686 * That is, when the activity is stopped it will automatically call 1687 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1688 * it will call {@link Cursor#requery} for you. When the activity is 1689 * destroyed, all managed Cursors will be closed automatically. 1690 * 1691 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1692 * or later, consider instead using {@link LoaderManager} instead, available 1693 * via {@link #getLoaderManager()}.</em> 1694 * 1695 * @param c The Cursor to be managed. 1696 * 1697 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1698 * @see #stopManagingCursor 1699 */ 1700 @Deprecated 1701 public void startManagingCursor(Cursor c) { 1702 synchronized (mManagedCursors) { 1703 mManagedCursors.add(new ManagedCursor(c)); 1704 } 1705 } 1706 1707 /** 1708 * @deprecated Use the new {@link android.content.CursorLoader} class with 1709 * {@link LoaderManager} instead; this is also 1710 * available on older platforms through the Android compatibility package. 1711 * 1712 * Given a Cursor that was previously given to 1713 * {@link #startManagingCursor}, stop the activity's management of that 1714 * cursor. 1715 * 1716 * @param c The Cursor that was being managed. 1717 * 1718 * @see #startManagingCursor 1719 */ 1720 @Deprecated 1721 public void stopManagingCursor(Cursor c) { 1722 synchronized (mManagedCursors) { 1723 final int N = mManagedCursors.size(); 1724 for (int i=0; i<N; i++) { 1725 ManagedCursor mc = mManagedCursors.get(i); 1726 if (mc.mCursor == c) { 1727 mManagedCursors.remove(i); 1728 break; 1729 } 1730 } 1731 } 1732 } 1733 1734 /** 1735 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1736 * this is a no-op. 1737 * @hide 1738 */ 1739 @Deprecated 1740 public void setPersistent(boolean isPersistent) { 1741 } 1742 1743 /** 1744 * Finds a view that was identified by the id attribute from the XML that 1745 * was processed in {@link #onCreate}. 1746 * 1747 * @return The view if found or null otherwise. 1748 */ 1749 public View findViewById(int id) { 1750 return getWindow().findViewById(id); 1751 } 1752 1753 /** 1754 * Retrieve a reference to this activity's ActionBar. 1755 * 1756 * @return The Activity's ActionBar, or null if it does not have one. 1757 */ 1758 public ActionBar getActionBar() { 1759 initActionBar(); 1760 return mActionBar; 1761 } 1762 1763 /** 1764 * Creates a new ActionBar, locates the inflated ActionBarView, 1765 * initializes the ActionBar with the view, and sets mActionBar. 1766 */ 1767 private void initActionBar() { 1768 Window window = getWindow(); 1769 1770 // Initializing the window decor can change window feature flags. 1771 // Make sure that we have the correct set before performing the test below. 1772 window.getDecorView(); 1773 1774 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1775 return; 1776 } 1777 1778 mActionBar = new ActionBarImpl(this); 1779 } 1780 1781 /** 1782 * Set the activity content from a layout resource. The resource will be 1783 * inflated, adding all top-level views to the activity. 1784 * 1785 * @param layoutResID Resource ID to be inflated. 1786 * 1787 * @see #setContentView(android.view.View) 1788 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1789 */ 1790 public void setContentView(int layoutResID) { 1791 getWindow().setContentView(layoutResID); 1792 initActionBar(); 1793 } 1794 1795 /** 1796 * Set the activity content to an explicit view. This view is placed 1797 * directly into the activity's view hierarchy. It can itself be a complex 1798 * view hierarchy. When calling this method, the layout parameters of the 1799 * specified view are ignored. Both the width and the height of the view are 1800 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1801 * your own layout parameters, invoke 1802 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1803 * instead. 1804 * 1805 * @param view The desired content to display. 1806 * 1807 * @see #setContentView(int) 1808 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1809 */ 1810 public void setContentView(View view) { 1811 getWindow().setContentView(view); 1812 initActionBar(); 1813 } 1814 1815 /** 1816 * Set the activity content to an explicit view. This view is placed 1817 * directly into the activity's view hierarchy. It can itself be a complex 1818 * view hierarchy. 1819 * 1820 * @param view The desired content to display. 1821 * @param params Layout parameters for the view. 1822 * 1823 * @see #setContentView(android.view.View) 1824 * @see #setContentView(int) 1825 */ 1826 public void setContentView(View view, ViewGroup.LayoutParams params) { 1827 getWindow().setContentView(view, params); 1828 initActionBar(); 1829 } 1830 1831 /** 1832 * Add an additional content view to the activity. Added after any existing 1833 * ones in the activity -- existing views are NOT removed. 1834 * 1835 * @param view The desired content to display. 1836 * @param params Layout parameters for the view. 1837 */ 1838 public void addContentView(View view, ViewGroup.LayoutParams params) { 1839 getWindow().addContentView(view, params); 1840 initActionBar(); 1841 } 1842 1843 /** 1844 * Sets whether this activity is finished when touched outside its window's 1845 * bounds. 1846 */ 1847 public void setFinishOnTouchOutside(boolean finish) { 1848 mWindow.setCloseOnTouchOutside(finish); 1849 } 1850 1851 /** 1852 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1853 * keys. 1854 * 1855 * @see #setDefaultKeyMode 1856 */ 1857 static public final int DEFAULT_KEYS_DISABLE = 0; 1858 /** 1859 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1860 * key handling. 1861 * 1862 * @see #setDefaultKeyMode 1863 */ 1864 static public final int DEFAULT_KEYS_DIALER = 1; 1865 /** 1866 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1867 * default key handling. 1868 * 1869 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1870 * 1871 * @see #setDefaultKeyMode 1872 */ 1873 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1874 /** 1875 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1876 * will start an application-defined search. (If the application or activity does not 1877 * actually define a search, the the keys will be ignored.) 1878 * 1879 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1880 * 1881 * @see #setDefaultKeyMode 1882 */ 1883 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1884 1885 /** 1886 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1887 * will start a global search (typically web search, but some platforms may define alternate 1888 * methods for global search) 1889 * 1890 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1891 * 1892 * @see #setDefaultKeyMode 1893 */ 1894 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1895 1896 /** 1897 * Select the default key handling for this activity. This controls what 1898 * will happen to key events that are not otherwise handled. The default 1899 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1900 * floor. Other modes allow you to launch the dialer 1901 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1902 * menu without requiring the menu key be held down 1903 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1904 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1905 * 1906 * <p>Note that the mode selected here does not impact the default 1907 * handling of system keys, such as the "back" and "menu" keys, and your 1908 * activity and its views always get a first chance to receive and handle 1909 * all application keys. 1910 * 1911 * @param mode The desired default key mode constant. 1912 * 1913 * @see #DEFAULT_KEYS_DISABLE 1914 * @see #DEFAULT_KEYS_DIALER 1915 * @see #DEFAULT_KEYS_SHORTCUT 1916 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1917 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1918 * @see #onKeyDown 1919 */ 1920 public final void setDefaultKeyMode(int mode) { 1921 mDefaultKeyMode = mode; 1922 1923 // Some modes use a SpannableStringBuilder to track & dispatch input events 1924 // This list must remain in sync with the switch in onKeyDown() 1925 switch (mode) { 1926 case DEFAULT_KEYS_DISABLE: 1927 case DEFAULT_KEYS_SHORTCUT: 1928 mDefaultKeySsb = null; // not used in these modes 1929 break; 1930 case DEFAULT_KEYS_DIALER: 1931 case DEFAULT_KEYS_SEARCH_LOCAL: 1932 case DEFAULT_KEYS_SEARCH_GLOBAL: 1933 mDefaultKeySsb = new SpannableStringBuilder(); 1934 Selection.setSelection(mDefaultKeySsb,0); 1935 break; 1936 default: 1937 throw new IllegalArgumentException(); 1938 } 1939 } 1940 1941 /** 1942 * Called when a key was pressed down and not handled by any of the views 1943 * inside of the activity. So, for example, key presses while the cursor 1944 * is inside a TextView will not trigger the event (unless it is a navigation 1945 * to another object) because TextView handles its own key presses. 1946 * 1947 * <p>If the focused view didn't want this event, this method is called. 1948 * 1949 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1950 * by calling {@link #onBackPressed()}, though the behavior varies based 1951 * on the application compatibility mode: for 1952 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1953 * it will set up the dispatch to call {@link #onKeyUp} where the action 1954 * will be performed; for earlier applications, it will perform the 1955 * action immediately in on-down, as those versions of the platform 1956 * behaved. 1957 * 1958 * <p>Other additional default key handling may be performed 1959 * if configured with {@link #setDefaultKeyMode}. 1960 * 1961 * @return Return <code>true</code> to prevent this event from being propagated 1962 * further, or <code>false</code> to indicate that you have not handled 1963 * this event and it should continue to be propagated. 1964 * @see #onKeyUp 1965 * @see android.view.KeyEvent 1966 */ 1967 public boolean onKeyDown(int keyCode, KeyEvent event) { 1968 if (keyCode == KeyEvent.KEYCODE_BACK) { 1969 if (getApplicationInfo().targetSdkVersion 1970 >= Build.VERSION_CODES.ECLAIR) { 1971 event.startTracking(); 1972 } else { 1973 onBackPressed(); 1974 } 1975 return true; 1976 } 1977 1978 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 1979 return false; 1980 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 1981 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 1982 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 1983 return true; 1984 } 1985 return false; 1986 } else { 1987 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 1988 boolean clearSpannable = false; 1989 boolean handled; 1990 if ((event.getRepeatCount() != 0) || event.isSystem()) { 1991 clearSpannable = true; 1992 handled = false; 1993 } else { 1994 handled = TextKeyListener.getInstance().onKeyDown( 1995 null, mDefaultKeySsb, keyCode, event); 1996 if (handled && mDefaultKeySsb.length() > 0) { 1997 // something useable has been typed - dispatch it now. 1998 1999 final String str = mDefaultKeySsb.toString(); 2000 clearSpannable = true; 2001 2002 switch (mDefaultKeyMode) { 2003 case DEFAULT_KEYS_DIALER: 2004 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2005 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2006 startActivity(intent); 2007 break; 2008 case DEFAULT_KEYS_SEARCH_LOCAL: 2009 startSearch(str, false, null, false); 2010 break; 2011 case DEFAULT_KEYS_SEARCH_GLOBAL: 2012 startSearch(str, false, null, true); 2013 break; 2014 } 2015 } 2016 } 2017 if (clearSpannable) { 2018 mDefaultKeySsb.clear(); 2019 mDefaultKeySsb.clearSpans(); 2020 Selection.setSelection(mDefaultKeySsb,0); 2021 } 2022 return handled; 2023 } 2024 } 2025 2026 /** 2027 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2028 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2029 * the event). 2030 */ 2031 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2032 return false; 2033 } 2034 2035 /** 2036 * Called when a key was released and not handled by any of the views 2037 * inside of the activity. So, for example, key presses while the cursor 2038 * is inside a TextView will not trigger the event (unless it is a navigation 2039 * to another object) because TextView handles its own key presses. 2040 * 2041 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2042 * and go back. 2043 * 2044 * @return Return <code>true</code> to prevent this event from being propagated 2045 * further, or <code>false</code> to indicate that you have not handled 2046 * this event and it should continue to be propagated. 2047 * @see #onKeyDown 2048 * @see KeyEvent 2049 */ 2050 public boolean onKeyUp(int keyCode, KeyEvent event) { 2051 if (getApplicationInfo().targetSdkVersion 2052 >= Build.VERSION_CODES.ECLAIR) { 2053 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2054 && !event.isCanceled()) { 2055 onBackPressed(); 2056 return true; 2057 } 2058 } 2059 return false; 2060 } 2061 2062 /** 2063 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2064 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2065 * the event). 2066 */ 2067 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2068 return false; 2069 } 2070 2071 /** 2072 * Called when the activity has detected the user's press of the back 2073 * key. The default implementation simply finishes the current activity, 2074 * but you can override this to do whatever you want. 2075 */ 2076 public void onBackPressed() { 2077 if (!mFragments.popBackStackImmediate()) { 2078 finish(); 2079 } 2080 } 2081 2082 /** 2083 * Called when a key shortcut event is not handled by any of the views in the Activity. 2084 * Override this method to implement global key shortcuts for the Activity. 2085 * Key shortcuts can also be implemented by setting the 2086 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2087 * 2088 * @param keyCode The value in event.getKeyCode(). 2089 * @param event Description of the key event. 2090 * @return True if the key shortcut was handled. 2091 */ 2092 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2093 return false; 2094 } 2095 2096 /** 2097 * Called when a touch screen event was not handled by any of the views 2098 * under it. This is most useful to process touch events that happen 2099 * outside of your window bounds, where there is no view to receive it. 2100 * 2101 * @param event The touch screen event being processed. 2102 * 2103 * @return Return true if you have consumed the event, false if you haven't. 2104 * The default implementation always returns false. 2105 */ 2106 public boolean onTouchEvent(MotionEvent event) { 2107 if (mWindow.shouldCloseOnTouch(this, event)) { 2108 finish(); 2109 return true; 2110 } 2111 2112 return false; 2113 } 2114 2115 /** 2116 * Called when the trackball was moved and not handled by any of the 2117 * views inside of the activity. So, for example, if the trackball moves 2118 * while focus is on a button, you will receive a call here because 2119 * buttons do not normally do anything with trackball events. The call 2120 * here happens <em>before</em> trackball movements are converted to 2121 * DPAD key events, which then get sent back to the view hierarchy, and 2122 * will be processed at the point for things like focus navigation. 2123 * 2124 * @param event The trackball event being processed. 2125 * 2126 * @return Return true if you have consumed the event, false if you haven't. 2127 * The default implementation always returns false. 2128 */ 2129 public boolean onTrackballEvent(MotionEvent event) { 2130 return false; 2131 } 2132 2133 /** 2134 * Called when a generic motion event was not handled by any of the 2135 * views inside of the activity. 2136 * <p> 2137 * Generic motion events describe joystick movements, mouse hovers, track pad 2138 * touches, scroll wheel movements and other input events. The 2139 * {@link MotionEvent#getSource() source} of the motion event specifies 2140 * the class of input that was received. Implementations of this method 2141 * must examine the bits in the source before processing the event. 2142 * The following code example shows how this is done. 2143 * </p><p> 2144 * Generic motion events with source class 2145 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2146 * are delivered to the view under the pointer. All other generic motion events are 2147 * delivered to the focused view. 2148 * </p><p> 2149 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2150 * handle this event. 2151 * </p> 2152 * 2153 * @param event The generic motion event being processed. 2154 * 2155 * @return Return true if you have consumed the event, false if you haven't. 2156 * The default implementation always returns false. 2157 */ 2158 public boolean onGenericMotionEvent(MotionEvent event) { 2159 return false; 2160 } 2161 2162 /** 2163 * Called whenever a key, touch, or trackball event is dispatched to the 2164 * activity. Implement this method if you wish to know that the user has 2165 * interacted with the device in some way while your activity is running. 2166 * This callback and {@link #onUserLeaveHint} are intended to help 2167 * activities manage status bar notifications intelligently; specifically, 2168 * for helping activities determine the proper time to cancel a notfication. 2169 * 2170 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2171 * be accompanied by calls to {@link #onUserInteraction}. This 2172 * ensures that your activity will be told of relevant user activity such 2173 * as pulling down the notification pane and touching an item there. 2174 * 2175 * <p>Note that this callback will be invoked for the touch down action 2176 * that begins a touch gesture, but may not be invoked for the touch-moved 2177 * and touch-up actions that follow. 2178 * 2179 * @see #onUserLeaveHint() 2180 */ 2181 public void onUserInteraction() { 2182 } 2183 2184 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2185 // Update window manager if: we have a view, that view is 2186 // attached to its parent (which will be a RootView), and 2187 // this activity is not embedded. 2188 if (mParent == null) { 2189 View decor = mDecor; 2190 if (decor != null && decor.getParent() != null) { 2191 getWindowManager().updateViewLayout(decor, params); 2192 } 2193 } 2194 } 2195 2196 public void onContentChanged() { 2197 } 2198 2199 /** 2200 * Called when the current {@link Window} of the activity gains or loses 2201 * focus. This is the best indicator of whether this activity is visible 2202 * to the user. The default implementation clears the key tracking 2203 * state, so should always be called. 2204 * 2205 * <p>Note that this provides information about global focus state, which 2206 * is managed independently of activity lifecycles. As such, while focus 2207 * changes will generally have some relation to lifecycle changes (an 2208 * activity that is stopped will not generally get window focus), you 2209 * should not rely on any particular order between the callbacks here and 2210 * those in the other lifecycle methods such as {@link #onResume}. 2211 * 2212 * <p>As a general rule, however, a resumed activity will have window 2213 * focus... unless it has displayed other dialogs or popups that take 2214 * input focus, in which case the activity itself will not have focus 2215 * when the other windows have it. Likewise, the system may display 2216 * system-level windows (such as the status bar notification panel or 2217 * a system alert) which will temporarily take window input focus without 2218 * pausing the foreground activity. 2219 * 2220 * @param hasFocus Whether the window of this activity has focus. 2221 * 2222 * @see #hasWindowFocus() 2223 * @see #onResume 2224 * @see View#onWindowFocusChanged(boolean) 2225 */ 2226 public void onWindowFocusChanged(boolean hasFocus) { 2227 } 2228 2229 /** 2230 * Called when the main window associated with the activity has been 2231 * attached to the window manager. 2232 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2233 * for more information. 2234 * @see View#onAttachedToWindow 2235 */ 2236 public void onAttachedToWindow() { 2237 } 2238 2239 /** 2240 * Called when the main window associated with the activity has been 2241 * detached from the window manager. 2242 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2243 * for more information. 2244 * @see View#onDetachedFromWindow 2245 */ 2246 public void onDetachedFromWindow() { 2247 } 2248 2249 /** 2250 * Returns true if this activity's <em>main</em> window currently has window focus. 2251 * Note that this is not the same as the view itself having focus. 2252 * 2253 * @return True if this activity's main window currently has window focus. 2254 * 2255 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2256 */ 2257 public boolean hasWindowFocus() { 2258 Window w = getWindow(); 2259 if (w != null) { 2260 View d = w.getDecorView(); 2261 if (d != null) { 2262 return d.hasWindowFocus(); 2263 } 2264 } 2265 return false; 2266 } 2267 2268 /** 2269 * Called to process key events. You can override this to intercept all 2270 * key events before they are dispatched to the window. Be sure to call 2271 * this implementation for key events that should be handled normally. 2272 * 2273 * @param event The key event. 2274 * 2275 * @return boolean Return true if this event was consumed. 2276 */ 2277 public boolean dispatchKeyEvent(KeyEvent event) { 2278 onUserInteraction(); 2279 Window win = getWindow(); 2280 if (win.superDispatchKeyEvent(event)) { 2281 return true; 2282 } 2283 View decor = mDecor; 2284 if (decor == null) decor = win.getDecorView(); 2285 return event.dispatch(this, decor != null 2286 ? decor.getKeyDispatcherState() : null, this); 2287 } 2288 2289 /** 2290 * Called to process a key shortcut event. 2291 * You can override this to intercept all key shortcut events before they are 2292 * dispatched to the window. Be sure to call this implementation for key shortcut 2293 * events that should be handled normally. 2294 * 2295 * @param event The key shortcut event. 2296 * @return True if this event was consumed. 2297 */ 2298 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2299 onUserInteraction(); 2300 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2301 return true; 2302 } 2303 return onKeyShortcut(event.getKeyCode(), event); 2304 } 2305 2306 /** 2307 * Called to process touch screen events. You can override this to 2308 * intercept all touch screen events before they are dispatched to the 2309 * window. Be sure to call this implementation for touch screen events 2310 * that should be handled normally. 2311 * 2312 * @param ev The touch screen event. 2313 * 2314 * @return boolean Return true if this event was consumed. 2315 */ 2316 public boolean dispatchTouchEvent(MotionEvent ev) { 2317 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2318 onUserInteraction(); 2319 } 2320 if (getWindow().superDispatchTouchEvent(ev)) { 2321 return true; 2322 } 2323 return onTouchEvent(ev); 2324 } 2325 2326 /** 2327 * Called to process trackball events. You can override this to 2328 * intercept all trackball events before they are dispatched to the 2329 * window. Be sure to call this implementation for trackball events 2330 * that should be handled normally. 2331 * 2332 * @param ev The trackball event. 2333 * 2334 * @return boolean Return true if this event was consumed. 2335 */ 2336 public boolean dispatchTrackballEvent(MotionEvent ev) { 2337 onUserInteraction(); 2338 if (getWindow().superDispatchTrackballEvent(ev)) { 2339 return true; 2340 } 2341 return onTrackballEvent(ev); 2342 } 2343 2344 /** 2345 * Called to process generic motion events. You can override this to 2346 * intercept all generic motion events before they are dispatched to the 2347 * window. Be sure to call this implementation for generic motion events 2348 * that should be handled normally. 2349 * 2350 * @param ev The generic motion event. 2351 * 2352 * @return boolean Return true if this event was consumed. 2353 */ 2354 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2355 onUserInteraction(); 2356 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2357 return true; 2358 } 2359 return onGenericMotionEvent(ev); 2360 } 2361 2362 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2363 event.setClassName(getClass().getName()); 2364 event.setPackageName(getPackageName()); 2365 2366 LayoutParams params = getWindow().getAttributes(); 2367 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2368 (params.height == LayoutParams.MATCH_PARENT); 2369 event.setFullScreen(isFullScreen); 2370 2371 CharSequence title = getTitle(); 2372 if (!TextUtils.isEmpty(title)) { 2373 event.getText().add(title); 2374 } 2375 2376 return true; 2377 } 2378 2379 /** 2380 * Default implementation of 2381 * {@link android.view.Window.Callback#onCreatePanelView} 2382 * for activities. This 2383 * simply returns null so that all panel sub-windows will have the default 2384 * menu behavior. 2385 */ 2386 public View onCreatePanelView(int featureId) { 2387 return null; 2388 } 2389 2390 /** 2391 * Default implementation of 2392 * {@link android.view.Window.Callback#onCreatePanelMenu} 2393 * for activities. This calls through to the new 2394 * {@link #onCreateOptionsMenu} method for the 2395 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2396 * so that subclasses of Activity don't need to deal with feature codes. 2397 */ 2398 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2399 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2400 boolean show = onCreateOptionsMenu(menu); 2401 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2402 return show; 2403 } 2404 return false; 2405 } 2406 2407 /** 2408 * Default implementation of 2409 * {@link android.view.Window.Callback#onPreparePanel} 2410 * for activities. This 2411 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2412 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2413 * panel, so that subclasses of 2414 * Activity don't need to deal with feature codes. 2415 */ 2416 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2417 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2418 boolean goforit = onPrepareOptionsMenu(menu); 2419 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2420 return goforit && menu.hasVisibleItems(); 2421 } 2422 return true; 2423 } 2424 2425 /** 2426 * {@inheritDoc} 2427 * 2428 * @return The default implementation returns true. 2429 */ 2430 public boolean onMenuOpened(int featureId, Menu menu) { 2431 if (featureId == Window.FEATURE_ACTION_BAR) { 2432 initActionBar(); 2433 if (mActionBar != null) { 2434 mActionBar.dispatchMenuVisibilityChanged(true); 2435 } else { 2436 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2437 } 2438 } 2439 return true; 2440 } 2441 2442 /** 2443 * Default implementation of 2444 * {@link android.view.Window.Callback#onMenuItemSelected} 2445 * for activities. This calls through to the new 2446 * {@link #onOptionsItemSelected} method for the 2447 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2448 * panel, so that subclasses of 2449 * Activity don't need to deal with feature codes. 2450 */ 2451 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2452 switch (featureId) { 2453 case Window.FEATURE_OPTIONS_PANEL: 2454 // Put event logging here so it gets called even if subclass 2455 // doesn't call through to superclass's implmeentation of each 2456 // of these methods below 2457 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2458 if (onOptionsItemSelected(item)) { 2459 return true; 2460 } 2461 return mFragments.dispatchOptionsItemSelected(item); 2462 2463 case Window.FEATURE_CONTEXT_MENU: 2464 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2465 if (onContextItemSelected(item)) { 2466 return true; 2467 } 2468 return mFragments.dispatchContextItemSelected(item); 2469 2470 default: 2471 return false; 2472 } 2473 } 2474 2475 /** 2476 * Default implementation of 2477 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2478 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2479 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2480 * so that subclasses of Activity don't need to deal with feature codes. 2481 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2482 * {@link #onContextMenuClosed(Menu)} will be called. 2483 */ 2484 public void onPanelClosed(int featureId, Menu menu) { 2485 switch (featureId) { 2486 case Window.FEATURE_OPTIONS_PANEL: 2487 mFragments.dispatchOptionsMenuClosed(menu); 2488 onOptionsMenuClosed(menu); 2489 break; 2490 2491 case Window.FEATURE_CONTEXT_MENU: 2492 onContextMenuClosed(menu); 2493 break; 2494 2495 case Window.FEATURE_ACTION_BAR: 2496 initActionBar(); 2497 mActionBar.dispatchMenuVisibilityChanged(false); 2498 break; 2499 } 2500 } 2501 2502 /** 2503 * Declare that the options menu has changed, so should be recreated. 2504 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2505 * time it needs to be displayed. 2506 */ 2507 public void invalidateOptionsMenu() { 2508 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2509 } 2510 2511 /** 2512 * Initialize the contents of the Activity's standard options menu. You 2513 * should place your menu items in to <var>menu</var>. 2514 * 2515 * <p>This is only called once, the first time the options menu is 2516 * displayed. To update the menu every time it is displayed, see 2517 * {@link #onPrepareOptionsMenu}. 2518 * 2519 * <p>The default implementation populates the menu with standard system 2520 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2521 * they will be correctly ordered with application-defined menu items. 2522 * Deriving classes should always call through to the base implementation. 2523 * 2524 * <p>You can safely hold on to <var>menu</var> (and any items created 2525 * from it), making modifications to it as desired, until the next 2526 * time onCreateOptionsMenu() is called. 2527 * 2528 * <p>When you add items to the menu, you can implement the Activity's 2529 * {@link #onOptionsItemSelected} method to handle them there. 2530 * 2531 * @param menu The options menu in which you place your items. 2532 * 2533 * @return You must return true for the menu to be displayed; 2534 * if you return false it will not be shown. 2535 * 2536 * @see #onPrepareOptionsMenu 2537 * @see #onOptionsItemSelected 2538 */ 2539 public boolean onCreateOptionsMenu(Menu menu) { 2540 if (mParent != null) { 2541 return mParent.onCreateOptionsMenu(menu); 2542 } 2543 return true; 2544 } 2545 2546 /** 2547 * Prepare the Screen's standard options menu to be displayed. This is 2548 * called right before the menu is shown, every time it is shown. You can 2549 * use this method to efficiently enable/disable items or otherwise 2550 * dynamically modify the contents. 2551 * 2552 * <p>The default implementation updates the system menu items based on the 2553 * activity's state. Deriving classes should always call through to the 2554 * base class implementation. 2555 * 2556 * @param menu The options menu as last shown or first initialized by 2557 * onCreateOptionsMenu(). 2558 * 2559 * @return You must return true for the menu to be displayed; 2560 * if you return false it will not be shown. 2561 * 2562 * @see #onCreateOptionsMenu 2563 */ 2564 public boolean onPrepareOptionsMenu(Menu menu) { 2565 if (mParent != null) { 2566 return mParent.onPrepareOptionsMenu(menu); 2567 } 2568 return true; 2569 } 2570 2571 /** 2572 * This hook is called whenever an item in your options menu is selected. 2573 * The default implementation simply returns false to have the normal 2574 * processing happen (calling the item's Runnable or sending a message to 2575 * its Handler as appropriate). You can use this method for any items 2576 * for which you would like to do processing without those other 2577 * facilities. 2578 * 2579 * <p>Derived classes should call through to the base class for it to 2580 * perform the default menu handling. 2581 * 2582 * @param item The menu item that was selected. 2583 * 2584 * @return boolean Return false to allow normal menu processing to 2585 * proceed, true to consume it here. 2586 * 2587 * @see #onCreateOptionsMenu 2588 */ 2589 public boolean onOptionsItemSelected(MenuItem item) { 2590 if (mParent != null) { 2591 return mParent.onOptionsItemSelected(item); 2592 } 2593 return false; 2594 } 2595 2596 /** 2597 * This hook is called whenever the options menu is being closed (either by the user canceling 2598 * the menu with the back/menu button, or when an item is selected). 2599 * 2600 * @param menu The options menu as last shown or first initialized by 2601 * onCreateOptionsMenu(). 2602 */ 2603 public void onOptionsMenuClosed(Menu menu) { 2604 if (mParent != null) { 2605 mParent.onOptionsMenuClosed(menu); 2606 } 2607 } 2608 2609 /** 2610 * Programmatically opens the options menu. If the options menu is already 2611 * open, this method does nothing. 2612 */ 2613 public void openOptionsMenu() { 2614 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2615 } 2616 2617 /** 2618 * Progammatically closes the options menu. If the options menu is already 2619 * closed, this method does nothing. 2620 */ 2621 public void closeOptionsMenu() { 2622 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2623 } 2624 2625 /** 2626 * Called when a context menu for the {@code view} is about to be shown. 2627 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2628 * time the context menu is about to be shown and should be populated for 2629 * the view (or item inside the view for {@link AdapterView} subclasses, 2630 * this can be found in the {@code menuInfo})). 2631 * <p> 2632 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2633 * item has been selected. 2634 * <p> 2635 * It is not safe to hold onto the context menu after this method returns. 2636 * {@inheritDoc} 2637 */ 2638 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2639 } 2640 2641 /** 2642 * Registers a context menu to be shown for the given view (multiple views 2643 * can show the context menu). This method will set the 2644 * {@link OnCreateContextMenuListener} on the view to this activity, so 2645 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2646 * called when it is time to show the context menu. 2647 * 2648 * @see #unregisterForContextMenu(View) 2649 * @param view The view that should show a context menu. 2650 */ 2651 public void registerForContextMenu(View view) { 2652 view.setOnCreateContextMenuListener(this); 2653 } 2654 2655 /** 2656 * Prevents a context menu to be shown for the given view. This method will remove the 2657 * {@link OnCreateContextMenuListener} on the view. 2658 * 2659 * @see #registerForContextMenu(View) 2660 * @param view The view that should stop showing a context menu. 2661 */ 2662 public void unregisterForContextMenu(View view) { 2663 view.setOnCreateContextMenuListener(null); 2664 } 2665 2666 /** 2667 * Programmatically opens the context menu for a particular {@code view}. 2668 * The {@code view} should have been added via 2669 * {@link #registerForContextMenu(View)}. 2670 * 2671 * @param view The view to show the context menu for. 2672 */ 2673 public void openContextMenu(View view) { 2674 view.showContextMenu(); 2675 } 2676 2677 /** 2678 * Programmatically closes the most recently opened context menu, if showing. 2679 */ 2680 public void closeContextMenu() { 2681 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2682 } 2683 2684 /** 2685 * This hook is called whenever an item in a context menu is selected. The 2686 * default implementation simply returns false to have the normal processing 2687 * happen (calling the item's Runnable or sending a message to its Handler 2688 * as appropriate). You can use this method for any items for which you 2689 * would like to do processing without those other facilities. 2690 * <p> 2691 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2692 * View that added this menu item. 2693 * <p> 2694 * Derived classes should call through to the base class for it to perform 2695 * the default menu handling. 2696 * 2697 * @param item The context menu item that was selected. 2698 * @return boolean Return false to allow normal context menu processing to 2699 * proceed, true to consume it here. 2700 */ 2701 public boolean onContextItemSelected(MenuItem item) { 2702 if (mParent != null) { 2703 return mParent.onContextItemSelected(item); 2704 } 2705 return false; 2706 } 2707 2708 /** 2709 * This hook is called whenever the context menu is being closed (either by 2710 * the user canceling the menu with the back/menu button, or when an item is 2711 * selected). 2712 * 2713 * @param menu The context menu that is being closed. 2714 */ 2715 public void onContextMenuClosed(Menu menu) { 2716 if (mParent != null) { 2717 mParent.onContextMenuClosed(menu); 2718 } 2719 } 2720 2721 /** 2722 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2723 */ 2724 @Deprecated 2725 protected Dialog onCreateDialog(int id) { 2726 return null; 2727 } 2728 2729 /** 2730 * @deprecated Use the new {@link DialogFragment} class with 2731 * {@link FragmentManager} instead; this is also 2732 * available on older platforms through the Android compatibility package. 2733 * 2734 * Callback for creating dialogs that are managed (saved and restored) for you 2735 * by the activity. The default implementation calls through to 2736 * {@link #onCreateDialog(int)} for compatibility. 2737 * 2738 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2739 * or later, consider instead using a {@link DialogFragment} instead.</em> 2740 * 2741 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2742 * this method the first time, and hang onto it thereafter. Any dialog 2743 * that is created by this method will automatically be saved and restored 2744 * for you, including whether it is showing. 2745 * 2746 * <p>If you would like the activity to manage saving and restoring dialogs 2747 * for you, you should override this method and handle any ids that are 2748 * passed to {@link #showDialog}. 2749 * 2750 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2751 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2752 * 2753 * @param id The id of the dialog. 2754 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2755 * @return The dialog. If you return null, the dialog will not be created. 2756 * 2757 * @see #onPrepareDialog(int, Dialog, Bundle) 2758 * @see #showDialog(int, Bundle) 2759 * @see #dismissDialog(int) 2760 * @see #removeDialog(int) 2761 */ 2762 @Deprecated 2763 protected Dialog onCreateDialog(int id, Bundle args) { 2764 return onCreateDialog(id); 2765 } 2766 2767 /** 2768 * @deprecated Old no-arguments version of 2769 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2770 */ 2771 @Deprecated 2772 protected void onPrepareDialog(int id, Dialog dialog) { 2773 dialog.setOwnerActivity(this); 2774 } 2775 2776 /** 2777 * @deprecated Use the new {@link DialogFragment} class with 2778 * {@link FragmentManager} instead; this is also 2779 * available on older platforms through the Android compatibility package. 2780 * 2781 * Provides an opportunity to prepare a managed dialog before it is being 2782 * shown. The default implementation calls through to 2783 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2784 * 2785 * <p> 2786 * Override this if you need to update a managed dialog based on the state 2787 * of the application each time it is shown. For example, a time picker 2788 * dialog might want to be updated with the current time. You should call 2789 * through to the superclass's implementation. The default implementation 2790 * will set this Activity as the owner activity on the Dialog. 2791 * 2792 * @param id The id of the managed dialog. 2793 * @param dialog The dialog. 2794 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2795 * @see #onCreateDialog(int, Bundle) 2796 * @see #showDialog(int) 2797 * @see #dismissDialog(int) 2798 * @see #removeDialog(int) 2799 */ 2800 @Deprecated 2801 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2802 onPrepareDialog(id, dialog); 2803 } 2804 2805 /** 2806 * @deprecated Use the new {@link DialogFragment} class with 2807 * {@link FragmentManager} instead; this is also 2808 * available on older platforms through the Android compatibility package. 2809 * 2810 * Simple version of {@link #showDialog(int, Bundle)} that does not 2811 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2812 * with null arguments. 2813 */ 2814 @Deprecated 2815 public final void showDialog(int id) { 2816 showDialog(id, null); 2817 } 2818 2819 /** 2820 * @deprecated Use the new {@link DialogFragment} class with 2821 * {@link FragmentManager} instead; this is also 2822 * available on older platforms through the Android compatibility package. 2823 * 2824 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2825 * will be made with the same id the first time this is called for a given 2826 * id. From thereafter, the dialog will be automatically saved and restored. 2827 * 2828 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2829 * or later, consider instead using a {@link DialogFragment} instead.</em> 2830 * 2831 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2832 * be made to provide an opportunity to do any timely preparation. 2833 * 2834 * @param id The id of the managed dialog. 2835 * @param args Arguments to pass through to the dialog. These will be saved 2836 * and restored for you. Note that if the dialog is already created, 2837 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2838 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2839 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2840 * @return Returns true if the Dialog was created; false is returned if 2841 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2842 * 2843 * @see Dialog 2844 * @see #onCreateDialog(int, Bundle) 2845 * @see #onPrepareDialog(int, Dialog, Bundle) 2846 * @see #dismissDialog(int) 2847 * @see #removeDialog(int) 2848 */ 2849 @Deprecated 2850 public final boolean showDialog(int id, Bundle args) { 2851 if (mManagedDialogs == null) { 2852 mManagedDialogs = new SparseArray<ManagedDialog>(); 2853 } 2854 ManagedDialog md = mManagedDialogs.get(id); 2855 if (md == null) { 2856 md = new ManagedDialog(); 2857 md.mDialog = createDialog(id, null, args); 2858 if (md.mDialog == null) { 2859 return false; 2860 } 2861 mManagedDialogs.put(id, md); 2862 } 2863 2864 md.mArgs = args; 2865 onPrepareDialog(id, md.mDialog, args); 2866 md.mDialog.show(); 2867 return true; 2868 } 2869 2870 /** 2871 * @deprecated Use the new {@link DialogFragment} class with 2872 * {@link FragmentManager} instead; this is also 2873 * available on older platforms through the Android compatibility package. 2874 * 2875 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2876 * 2877 * @param id The id of the managed dialog. 2878 * 2879 * @throws IllegalArgumentException if the id was not previously shown via 2880 * {@link #showDialog(int)}. 2881 * 2882 * @see #onCreateDialog(int, Bundle) 2883 * @see #onPrepareDialog(int, Dialog, Bundle) 2884 * @see #showDialog(int) 2885 * @see #removeDialog(int) 2886 */ 2887 @Deprecated 2888 public final void dismissDialog(int id) { 2889 if (mManagedDialogs == null) { 2890 throw missingDialog(id); 2891 } 2892 2893 final ManagedDialog md = mManagedDialogs.get(id); 2894 if (md == null) { 2895 throw missingDialog(id); 2896 } 2897 md.mDialog.dismiss(); 2898 } 2899 2900 /** 2901 * Creates an exception to throw if a user passed in a dialog id that is 2902 * unexpected. 2903 */ 2904 private IllegalArgumentException missingDialog(int id) { 2905 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2906 + "shown via Activity#showDialog"); 2907 } 2908 2909 /** 2910 * @deprecated Use the new {@link DialogFragment} class with 2911 * {@link FragmentManager} instead; this is also 2912 * available on older platforms through the Android compatibility package. 2913 * 2914 * Removes any internal references to a dialog managed by this Activity. 2915 * If the dialog is showing, it will dismiss it as part of the clean up. 2916 * 2917 * <p>This can be useful if you know that you will never show a dialog again and 2918 * want to avoid the overhead of saving and restoring it in the future. 2919 * 2920 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2921 * will not throw an exception if you try to remove an ID that does not 2922 * currently have an associated dialog.</p> 2923 * 2924 * @param id The id of the managed dialog. 2925 * 2926 * @see #onCreateDialog(int, Bundle) 2927 * @see #onPrepareDialog(int, Dialog, Bundle) 2928 * @see #showDialog(int) 2929 * @see #dismissDialog(int) 2930 */ 2931 @Deprecated 2932 public final void removeDialog(int id) { 2933 if (mManagedDialogs != null) { 2934 final ManagedDialog md = mManagedDialogs.get(id); 2935 if (md != null) { 2936 md.mDialog.dismiss(); 2937 mManagedDialogs.remove(id); 2938 } 2939 } 2940 } 2941 2942 /** 2943 * This hook is called when the user signals the desire to start a search. 2944 * 2945 * <p>You can use this function as a simple way to launch the search UI, in response to a 2946 * menu item, search button, or other widgets within your activity. Unless overidden, 2947 * calling this function is the same as calling 2948 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2949 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2950 * 2951 * <p>You can override this function to force global search, e.g. in response to a dedicated 2952 * search key, or to block search entirely (by simply returning false). 2953 * 2954 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2955 * The default implementation always returns {@code true}. 2956 * 2957 * @see android.app.SearchManager 2958 */ 2959 public boolean onSearchRequested() { 2960 startSearch(null, false, null, false); 2961 return true; 2962 } 2963 2964 /** 2965 * This hook is called to launch the search UI. 2966 * 2967 * <p>It is typically called from onSearchRequested(), either directly from 2968 * Activity.onSearchRequested() or from an overridden version in any given 2969 * Activity. If your goal is simply to activate search, it is preferred to call 2970 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2971 * is to inject specific data such as context data, it is preferred to <i>override</i> 2972 * onSearchRequested(), so that any callers to it will benefit from the override. 2973 * 2974 * @param initialQuery Any non-null non-empty string will be inserted as 2975 * pre-entered text in the search query box. 2976 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2977 * any further typing will replace it. This is useful for cases where an entire pre-formed 2978 * query is being inserted. If false, the selection point will be placed at the end of the 2979 * inserted query. This is useful when the inserted query is text that the user entered, 2980 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 2981 * if initialQuery is a non-empty string.</i> 2982 * @param appSearchData An application can insert application-specific 2983 * context here, in order to improve quality or specificity of its own 2984 * searches. This data will be returned with SEARCH intent(s). Null if 2985 * no extra data is required. 2986 * @param globalSearch If false, this will only launch the search that has been specifically 2987 * defined by the application (which is usually defined as a local search). If no default 2988 * search is defined in the current application or activity, global search will be launched. 2989 * If true, this will always launch a platform-global (e.g. web-based) search instead. 2990 * 2991 * @see android.app.SearchManager 2992 * @see #onSearchRequested 2993 */ 2994 public void startSearch(String initialQuery, boolean selectInitialQuery, 2995 Bundle appSearchData, boolean globalSearch) { 2996 ensureSearchManager(); 2997 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 2998 appSearchData, globalSearch); 2999 } 3000 3001 /** 3002 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3003 * the search dialog. Made available for testing purposes. 3004 * 3005 * @param query The query to trigger. If empty, the request will be ignored. 3006 * @param appSearchData An application can insert application-specific 3007 * context here, in order to improve quality or specificity of its own 3008 * searches. This data will be returned with SEARCH intent(s). Null if 3009 * no extra data is required. 3010 */ 3011 public void triggerSearch(String query, Bundle appSearchData) { 3012 ensureSearchManager(); 3013 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3014 } 3015 3016 /** 3017 * Request that key events come to this activity. Use this if your 3018 * activity has no views with focus, but the activity still wants 3019 * a chance to process key events. 3020 * 3021 * @see android.view.Window#takeKeyEvents 3022 */ 3023 public void takeKeyEvents(boolean get) { 3024 getWindow().takeKeyEvents(get); 3025 } 3026 3027 /** 3028 * Enable extended window features. This is a convenience for calling 3029 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3030 * 3031 * @param featureId The desired feature as defined in 3032 * {@link android.view.Window}. 3033 * @return Returns true if the requested feature is supported and now 3034 * enabled. 3035 * 3036 * @see android.view.Window#requestFeature 3037 */ 3038 public final boolean requestWindowFeature(int featureId) { 3039 return getWindow().requestFeature(featureId); 3040 } 3041 3042 /** 3043 * Convenience for calling 3044 * {@link android.view.Window#setFeatureDrawableResource}. 3045 */ 3046 public final void setFeatureDrawableResource(int featureId, int resId) { 3047 getWindow().setFeatureDrawableResource(featureId, resId); 3048 } 3049 3050 /** 3051 * Convenience for calling 3052 * {@link android.view.Window#setFeatureDrawableUri}. 3053 */ 3054 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3055 getWindow().setFeatureDrawableUri(featureId, uri); 3056 } 3057 3058 /** 3059 * Convenience for calling 3060 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3061 */ 3062 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3063 getWindow().setFeatureDrawable(featureId, drawable); 3064 } 3065 3066 /** 3067 * Convenience for calling 3068 * {@link android.view.Window#setFeatureDrawableAlpha}. 3069 */ 3070 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3071 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3072 } 3073 3074 /** 3075 * Convenience for calling 3076 * {@link android.view.Window#getLayoutInflater}. 3077 */ 3078 public LayoutInflater getLayoutInflater() { 3079 return getWindow().getLayoutInflater(); 3080 } 3081 3082 /** 3083 * Returns a {@link MenuInflater} with this context. 3084 */ 3085 public MenuInflater getMenuInflater() { 3086 return new MenuInflater(this); 3087 } 3088 3089 @Override 3090 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3091 boolean first) { 3092 if (mParent == null) { 3093 super.onApplyThemeResource(theme, resid, first); 3094 } else { 3095 try { 3096 theme.setTo(mParent.getTheme()); 3097 } catch (Exception e) { 3098 // Empty 3099 } 3100 theme.applyStyle(resid, false); 3101 } 3102 } 3103 3104 /** 3105 * Launch an activity for which you would like a result when it finished. 3106 * When this activity exits, your 3107 * onActivityResult() method will be called with the given requestCode. 3108 * Using a negative requestCode is the same as calling 3109 * {@link #startActivity} (the activity is not launched as a sub-activity). 3110 * 3111 * <p>Note that this method should only be used with Intent protocols 3112 * that are defined to return a result. In other protocols (such as 3113 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3114 * not get the result when you expect. For example, if the activity you 3115 * are launching uses the singleTask launch mode, it will not run in your 3116 * task and thus you will immediately receive a cancel result. 3117 * 3118 * <p>As a special case, if you call startActivityForResult() with a requestCode 3119 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3120 * activity, then your window will not be displayed until a result is 3121 * returned back from the started activity. This is to avoid visible 3122 * flickering when redirecting to another activity. 3123 * 3124 * <p>This method throws {@link android.content.ActivityNotFoundException} 3125 * if there was no Activity found to run the given Intent. 3126 * 3127 * @param intent The intent to start. 3128 * @param requestCode If >= 0, this code will be returned in 3129 * onActivityResult() when the activity exits. 3130 * 3131 * @throws android.content.ActivityNotFoundException 3132 * 3133 * @see #startActivity 3134 */ 3135 public void startActivityForResult(Intent intent, int requestCode) { 3136 if (mParent == null) { 3137 Instrumentation.ActivityResult ar = 3138 mInstrumentation.execStartActivity( 3139 this, mMainThread.getApplicationThread(), mToken, this, 3140 intent, requestCode); 3141 if (ar != null) { 3142 mMainThread.sendActivityResult( 3143 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3144 ar.getResultData()); 3145 } 3146 if (requestCode >= 0) { 3147 // If this start is requesting a result, we can avoid making 3148 // the activity visible until the result is received. Setting 3149 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3150 // activity hidden during this time, to avoid flickering. 3151 // This can only be done when a result is requested because 3152 // that guarantees we will get information back when the 3153 // activity is finished, no matter what happens to it. 3154 mStartedActivity = true; 3155 } 3156 } else { 3157 mParent.startActivityFromChild(this, intent, requestCode); 3158 } 3159 } 3160 3161 /** 3162 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3163 * to use a IntentSender to describe the activity to be started. If 3164 * the IntentSender is for an activity, that activity will be started 3165 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3166 * here; otherwise, its associated action will be executed (such as 3167 * sending a broadcast) as if you had called 3168 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3169 * 3170 * @param intent The IntentSender to launch. 3171 * @param requestCode If >= 0, this code will be returned in 3172 * onActivityResult() when the activity exits. 3173 * @param fillInIntent If non-null, this will be provided as the 3174 * intent parameter to {@link IntentSender#sendIntent}. 3175 * @param flagsMask Intent flags in the original IntentSender that you 3176 * would like to change. 3177 * @param flagsValues Desired values for any bits set in 3178 * <var>flagsMask</var> 3179 * @param extraFlags Always set to 0. 3180 */ 3181 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3182 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3183 throws IntentSender.SendIntentException { 3184 if (mParent == null) { 3185 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3186 flagsMask, flagsValues, this); 3187 } else { 3188 mParent.startIntentSenderFromChild(this, intent, requestCode, 3189 fillInIntent, flagsMask, flagsValues, extraFlags); 3190 } 3191 } 3192 3193 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3194 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3195 throws IntentSender.SendIntentException { 3196 try { 3197 String resolvedType = null; 3198 if (fillInIntent != null) { 3199 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3200 } 3201 int result = ActivityManagerNative.getDefault() 3202 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3203 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3204 requestCode, flagsMask, flagsValues); 3205 if (result == IActivityManager.START_CANCELED) { 3206 throw new IntentSender.SendIntentException(); 3207 } 3208 Instrumentation.checkStartActivityResult(result, null); 3209 } catch (RemoteException e) { 3210 } 3211 if (requestCode >= 0) { 3212 // If this start is requesting a result, we can avoid making 3213 // the activity visible until the result is received. Setting 3214 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3215 // activity hidden during this time, to avoid flickering. 3216 // This can only be done when a result is requested because 3217 // that guarantees we will get information back when the 3218 // activity is finished, no matter what happens to it. 3219 mStartedActivity = true; 3220 } 3221 } 3222 3223 /** 3224 * Launch a new activity. You will not receive any information about when 3225 * the activity exits. This implementation overrides the base version, 3226 * providing information about 3227 * the activity performing the launch. Because of this additional 3228 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3229 * required; if not specified, the new activity will be added to the 3230 * task of the caller. 3231 * 3232 * <p>This method throws {@link android.content.ActivityNotFoundException} 3233 * if there was no Activity found to run the given Intent. 3234 * 3235 * @param intent The intent to start. 3236 * 3237 * @throws android.content.ActivityNotFoundException 3238 * 3239 * @see #startActivityForResult 3240 */ 3241 @Override 3242 public void startActivity(Intent intent) { 3243 startActivityForResult(intent, -1); 3244 } 3245 3246 /** 3247 * Launch a new activity. You will not receive any information about when 3248 * the activity exits. This implementation overrides the base version, 3249 * providing information about 3250 * the activity performing the launch. Because of this additional 3251 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3252 * required; if not specified, the new activity will be added to the 3253 * task of the caller. 3254 * 3255 * <p>This method throws {@link android.content.ActivityNotFoundException} 3256 * if there was no Activity found to run the given Intent. 3257 * 3258 * @param intents The intents to start. 3259 * 3260 * @throws android.content.ActivityNotFoundException 3261 * 3262 * @see #startActivityForResult 3263 */ 3264 @Override 3265 public void startActivities(Intent[] intents) { 3266 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3267 mToken, this, intents); 3268 } 3269 3270 /** 3271 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3272 * to start; see 3273 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3274 * for more information. 3275 * 3276 * @param intent The IntentSender to launch. 3277 * @param fillInIntent If non-null, this will be provided as the 3278 * intent parameter to {@link IntentSender#sendIntent}. 3279 * @param flagsMask Intent flags in the original IntentSender that you 3280 * would like to change. 3281 * @param flagsValues Desired values for any bits set in 3282 * <var>flagsMask</var> 3283 * @param extraFlags Always set to 0. 3284 */ 3285 public void startIntentSender(IntentSender intent, 3286 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3287 throws IntentSender.SendIntentException { 3288 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3289 flagsValues, extraFlags); 3290 } 3291 3292 /** 3293 * A special variation to launch an activity only if a new activity 3294 * instance is needed to handle the given Intent. In other words, this is 3295 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3296 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3297 * singleTask or singleTop 3298 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3299 * and the activity 3300 * that handles <var>intent</var> is the same as your currently running 3301 * activity, then a new instance is not needed. In this case, instead of 3302 * the normal behavior of calling {@link #onNewIntent} this function will 3303 * return and you can handle the Intent yourself. 3304 * 3305 * <p>This function can only be called from a top-level activity; if it is 3306 * called from a child activity, a runtime exception will be thrown. 3307 * 3308 * @param intent The intent to start. 3309 * @param requestCode If >= 0, this code will be returned in 3310 * onActivityResult() when the activity exits, as described in 3311 * {@link #startActivityForResult}. 3312 * 3313 * @return If a new activity was launched then true is returned; otherwise 3314 * false is returned and you must handle the Intent yourself. 3315 * 3316 * @see #startActivity 3317 * @see #startActivityForResult 3318 */ 3319 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3320 if (mParent == null) { 3321 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3322 try { 3323 result = ActivityManagerNative.getDefault() 3324 .startActivity(mMainThread.getApplicationThread(), 3325 intent, intent.resolveTypeIfNeeded( 3326 getContentResolver()), 3327 null, 0, 3328 mToken, mEmbeddedID, requestCode, true, false); 3329 } catch (RemoteException e) { 3330 // Empty 3331 } 3332 3333 Instrumentation.checkStartActivityResult(result, intent); 3334 3335 if (requestCode >= 0) { 3336 // If this start is requesting a result, we can avoid making 3337 // the activity visible until the result is received. Setting 3338 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3339 // activity hidden during this time, to avoid flickering. 3340 // This can only be done when a result is requested because 3341 // that guarantees we will get information back when the 3342 // activity is finished, no matter what happens to it. 3343 mStartedActivity = true; 3344 } 3345 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3346 } 3347 3348 throw new UnsupportedOperationException( 3349 "startActivityIfNeeded can only be called from a top-level activity"); 3350 } 3351 3352 /** 3353 * Special version of starting an activity, for use when you are replacing 3354 * other activity components. You can use this to hand the Intent off 3355 * to the next Activity that can handle it. You typically call this in 3356 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3357 * 3358 * @param intent The intent to dispatch to the next activity. For 3359 * correct behavior, this must be the same as the Intent that started 3360 * your own activity; the only changes you can make are to the extras 3361 * inside of it. 3362 * 3363 * @return Returns a boolean indicating whether there was another Activity 3364 * to start: true if there was a next activity to start, false if there 3365 * wasn't. In general, if true is returned you will then want to call 3366 * finish() on yourself. 3367 */ 3368 public boolean startNextMatchingActivity(Intent intent) { 3369 if (mParent == null) { 3370 try { 3371 return ActivityManagerNative.getDefault() 3372 .startNextMatchingActivity(mToken, intent); 3373 } catch (RemoteException e) { 3374 // Empty 3375 } 3376 return false; 3377 } 3378 3379 throw new UnsupportedOperationException( 3380 "startNextMatchingActivity can only be called from a top-level activity"); 3381 } 3382 3383 /** 3384 * This is called when a child activity of this one calls its 3385 * {@link #startActivity} or {@link #startActivityForResult} method. 3386 * 3387 * <p>This method throws {@link android.content.ActivityNotFoundException} 3388 * if there was no Activity found to run the given Intent. 3389 * 3390 * @param child The activity making the call. 3391 * @param intent The intent to start. 3392 * @param requestCode Reply request code. < 0 if reply is not requested. 3393 * 3394 * @throws android.content.ActivityNotFoundException 3395 * 3396 * @see #startActivity 3397 * @see #startActivityForResult 3398 */ 3399 public void startActivityFromChild(Activity child, Intent intent, 3400 int requestCode) { 3401 Instrumentation.ActivityResult ar = 3402 mInstrumentation.execStartActivity( 3403 this, mMainThread.getApplicationThread(), mToken, child, 3404 intent, requestCode); 3405 if (ar != null) { 3406 mMainThread.sendActivityResult( 3407 mToken, child.mEmbeddedID, requestCode, 3408 ar.getResultCode(), ar.getResultData()); 3409 } 3410 } 3411 3412 /** 3413 * This is called when a Fragment in this activity calls its 3414 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3415 * method. 3416 * 3417 * <p>This method throws {@link android.content.ActivityNotFoundException} 3418 * if there was no Activity found to run the given Intent. 3419 * 3420 * @param fragment The fragment making the call. 3421 * @param intent The intent to start. 3422 * @param requestCode Reply request code. < 0 if reply is not requested. 3423 * 3424 * @throws android.content.ActivityNotFoundException 3425 * 3426 * @see Fragment#startActivity 3427 * @see Fragment#startActivityForResult 3428 */ 3429 public void startActivityFromFragment(Fragment fragment, Intent intent, 3430 int requestCode) { 3431 Instrumentation.ActivityResult ar = 3432 mInstrumentation.execStartActivity( 3433 this, mMainThread.getApplicationThread(), mToken, fragment, 3434 intent, requestCode); 3435 if (ar != null) { 3436 mMainThread.sendActivityResult( 3437 mToken, fragment.mWho, requestCode, 3438 ar.getResultCode(), ar.getResultData()); 3439 } 3440 } 3441 3442 /** 3443 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3444 * taking a IntentSender; see 3445 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3446 * for more information. 3447 */ 3448 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3449 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3450 int extraFlags) 3451 throws IntentSender.SendIntentException { 3452 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3453 flagsMask, flagsValues, child); 3454 } 3455 3456 /** 3457 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3458 * or {@link #finish} to specify an explicit transition animation to 3459 * perform next. 3460 * @param enterAnim A resource ID of the animation resource to use for 3461 * the incoming activity. Use 0 for no animation. 3462 * @param exitAnim A resource ID of the animation resource to use for 3463 * the outgoing activity. Use 0 for no animation. 3464 */ 3465 public void overridePendingTransition(int enterAnim, int exitAnim) { 3466 try { 3467 ActivityManagerNative.getDefault().overridePendingTransition( 3468 mToken, getPackageName(), enterAnim, exitAnim); 3469 } catch (RemoteException e) { 3470 } 3471 } 3472 3473 /** 3474 * Call this to set the result that your activity will return to its 3475 * caller. 3476 * 3477 * @param resultCode The result code to propagate back to the originating 3478 * activity, often RESULT_CANCELED or RESULT_OK 3479 * 3480 * @see #RESULT_CANCELED 3481 * @see #RESULT_OK 3482 * @see #RESULT_FIRST_USER 3483 * @see #setResult(int, Intent) 3484 */ 3485 public final void setResult(int resultCode) { 3486 synchronized (this) { 3487 mResultCode = resultCode; 3488 mResultData = null; 3489 } 3490 } 3491 3492 /** 3493 * Call this to set the result that your activity will return to its 3494 * caller. 3495 * 3496 * @param resultCode The result code to propagate back to the originating 3497 * activity, often RESULT_CANCELED or RESULT_OK 3498 * @param data The data to propagate back to the originating activity. 3499 * 3500 * @see #RESULT_CANCELED 3501 * @see #RESULT_OK 3502 * @see #RESULT_FIRST_USER 3503 * @see #setResult(int) 3504 */ 3505 public final void setResult(int resultCode, Intent data) { 3506 synchronized (this) { 3507 mResultCode = resultCode; 3508 mResultData = data; 3509 } 3510 } 3511 3512 /** 3513 * Return the name of the package that invoked this activity. This is who 3514 * the data in {@link #setResult setResult()} will be sent to. You can 3515 * use this information to validate that the recipient is allowed to 3516 * receive the data. 3517 * 3518 * <p>Note: if the calling activity is not expecting a result (that is it 3519 * did not use the {@link #startActivityForResult} 3520 * form that includes a request code), then the calling package will be 3521 * null. 3522 * 3523 * @return The package of the activity that will receive your 3524 * reply, or null if none. 3525 */ 3526 public String getCallingPackage() { 3527 try { 3528 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3529 } catch (RemoteException e) { 3530 return null; 3531 } 3532 } 3533 3534 /** 3535 * Return the name of the activity that invoked this activity. This is 3536 * who the data in {@link #setResult setResult()} will be sent to. You 3537 * can use this information to validate that the recipient is allowed to 3538 * receive the data. 3539 * 3540 * <p>Note: if the calling activity is not expecting a result (that is it 3541 * did not use the {@link #startActivityForResult} 3542 * form that includes a request code), then the calling package will be 3543 * null. 3544 * 3545 * @return String The full name of the activity that will receive your 3546 * reply, or null if none. 3547 */ 3548 public ComponentName getCallingActivity() { 3549 try { 3550 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3551 } catch (RemoteException e) { 3552 return null; 3553 } 3554 } 3555 3556 /** 3557 * Control whether this activity's main window is visible. This is intended 3558 * only for the special case of an activity that is not going to show a 3559 * UI itself, but can't just finish prior to onResume() because it needs 3560 * to wait for a service binding or such. Setting this to false allows 3561 * you to prevent your UI from being shown during that time. 3562 * 3563 * <p>The default value for this is taken from the 3564 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3565 */ 3566 public void setVisible(boolean visible) { 3567 if (mVisibleFromClient != visible) { 3568 mVisibleFromClient = visible; 3569 if (mVisibleFromServer) { 3570 if (visible) makeVisible(); 3571 else mDecor.setVisibility(View.INVISIBLE); 3572 } 3573 } 3574 } 3575 3576 void makeVisible() { 3577 if (!mWindowAdded) { 3578 ViewManager wm = getWindowManager(); 3579 wm.addView(mDecor, getWindow().getAttributes()); 3580 mWindowAdded = true; 3581 } 3582 mDecor.setVisibility(View.VISIBLE); 3583 } 3584 3585 /** 3586 * Check to see whether this activity is in the process of finishing, 3587 * either because you called {@link #finish} on it or someone else 3588 * has requested that it finished. This is often used in 3589 * {@link #onPause} to determine whether the activity is simply pausing or 3590 * completely finishing. 3591 * 3592 * @return If the activity is finishing, returns true; else returns false. 3593 * 3594 * @see #finish 3595 */ 3596 public boolean isFinishing() { 3597 return mFinished; 3598 } 3599 3600 /** 3601 * Check to see whether this activity is in the process of being destroyed in order to be 3602 * recreated with a new configuration. This is often used in 3603 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3604 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3605 * 3606 * @return If the activity is being torn down in order to be recreated with a new configuration, 3607 * returns true; else returns false. 3608 */ 3609 public boolean isChangingConfigurations() { 3610 return mChangingConfigurations; 3611 } 3612 3613 /** 3614 * Cause this Activity to be recreated with a new instance. This results 3615 * in essentially the same flow as when the Activity is created due to 3616 * a configuration change -- the current instance will go through its 3617 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3618 */ 3619 public void recreate() { 3620 if (mParent != null) { 3621 throw new IllegalStateException("Can only be called on top-level activity"); 3622 } 3623 if (Looper.myLooper() != mMainThread.getLooper()) { 3624 throw new IllegalStateException("Must be called from main thread"); 3625 } 3626 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3627 } 3628 3629 /** 3630 * Call this when your activity is done and should be closed. The 3631 * ActivityResult is propagated back to whoever launched you via 3632 * onActivityResult(). 3633 */ 3634 public void finish() { 3635 if (mParent == null) { 3636 int resultCode; 3637 Intent resultData; 3638 synchronized (this) { 3639 resultCode = mResultCode; 3640 resultData = mResultData; 3641 } 3642 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 3643 try { 3644 if (ActivityManagerNative.getDefault() 3645 .finishActivity(mToken, resultCode, resultData)) { 3646 mFinished = true; 3647 } 3648 } catch (RemoteException e) { 3649 // Empty 3650 } 3651 } else { 3652 mParent.finishFromChild(this); 3653 } 3654 } 3655 3656 /** 3657 * This is called when a child activity of this one calls its 3658 * {@link #finish} method. The default implementation simply calls 3659 * finish() on this activity (the parent), finishing the entire group. 3660 * 3661 * @param child The activity making the call. 3662 * 3663 * @see #finish 3664 */ 3665 public void finishFromChild(Activity child) { 3666 finish(); 3667 } 3668 3669 /** 3670 * Force finish another activity that you had previously started with 3671 * {@link #startActivityForResult}. 3672 * 3673 * @param requestCode The request code of the activity that you had 3674 * given to startActivityForResult(). If there are multiple 3675 * activities started with this request code, they 3676 * will all be finished. 3677 */ 3678 public void finishActivity(int requestCode) { 3679 if (mParent == null) { 3680 try { 3681 ActivityManagerNative.getDefault() 3682 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3683 } catch (RemoteException e) { 3684 // Empty 3685 } 3686 } else { 3687 mParent.finishActivityFromChild(this, requestCode); 3688 } 3689 } 3690 3691 /** 3692 * This is called when a child activity of this one calls its 3693 * finishActivity(). 3694 * 3695 * @param child The activity making the call. 3696 * @param requestCode Request code that had been used to start the 3697 * activity. 3698 */ 3699 public void finishActivityFromChild(Activity child, int requestCode) { 3700 try { 3701 ActivityManagerNative.getDefault() 3702 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3703 } catch (RemoteException e) { 3704 // Empty 3705 } 3706 } 3707 3708 /** 3709 * Called when an activity you launched exits, giving you the requestCode 3710 * you started it with, the resultCode it returned, and any additional 3711 * data from it. The <var>resultCode</var> will be 3712 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3713 * didn't return any result, or crashed during its operation. 3714 * 3715 * <p>You will receive this call immediately before onResume() when your 3716 * activity is re-starting. 3717 * 3718 * @param requestCode The integer request code originally supplied to 3719 * startActivityForResult(), allowing you to identify who this 3720 * result came from. 3721 * @param resultCode The integer result code returned by the child activity 3722 * through its setResult(). 3723 * @param data An Intent, which can return result data to the caller 3724 * (various data can be attached to Intent "extras"). 3725 * 3726 * @see #startActivityForResult 3727 * @see #createPendingResult 3728 * @see #setResult(int) 3729 */ 3730 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3731 } 3732 3733 /** 3734 * Create a new PendingIntent object which you can hand to others 3735 * for them to use to send result data back to your 3736 * {@link #onActivityResult} callback. The created object will be either 3737 * one-shot (becoming invalid after a result is sent back) or multiple 3738 * (allowing any number of results to be sent through it). 3739 * 3740 * @param requestCode Private request code for the sender that will be 3741 * associated with the result data when it is returned. The sender can not 3742 * modify this value, allowing you to identify incoming results. 3743 * @param data Default data to supply in the result, which may be modified 3744 * by the sender. 3745 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3746 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3747 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3748 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3749 * or any of the flags as supported by 3750 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3751 * of the intent that can be supplied when the actual send happens. 3752 * 3753 * @return Returns an existing or new PendingIntent matching the given 3754 * parameters. May return null only if 3755 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3756 * supplied. 3757 * 3758 * @see PendingIntent 3759 */ 3760 public PendingIntent createPendingResult(int requestCode, Intent data, 3761 int flags) { 3762 String packageName = getPackageName(); 3763 try { 3764 IIntentSender target = 3765 ActivityManagerNative.getDefault().getIntentSender( 3766 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3767 mParent == null ? mToken : mParent.mToken, 3768 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3769 return target != null ? new PendingIntent(target) : null; 3770 } catch (RemoteException e) { 3771 // Empty 3772 } 3773 return null; 3774 } 3775 3776 /** 3777 * Change the desired orientation of this activity. If the activity 3778 * is currently in the foreground or otherwise impacting the screen 3779 * orientation, the screen will immediately be changed (possibly causing 3780 * the activity to be restarted). Otherwise, this will be used the next 3781 * time the activity is visible. 3782 * 3783 * @param requestedOrientation An orientation constant as used in 3784 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3785 */ 3786 public void setRequestedOrientation(int requestedOrientation) { 3787 if (mParent == null) { 3788 try { 3789 ActivityManagerNative.getDefault().setRequestedOrientation( 3790 mToken, requestedOrientation); 3791 } catch (RemoteException e) { 3792 // Empty 3793 } 3794 } else { 3795 mParent.setRequestedOrientation(requestedOrientation); 3796 } 3797 } 3798 3799 /** 3800 * Return the current requested orientation of the activity. This will 3801 * either be the orientation requested in its component's manifest, or 3802 * the last requested orientation given to 3803 * {@link #setRequestedOrientation(int)}. 3804 * 3805 * @return Returns an orientation constant as used in 3806 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3807 */ 3808 public int getRequestedOrientation() { 3809 if (mParent == null) { 3810 try { 3811 return ActivityManagerNative.getDefault() 3812 .getRequestedOrientation(mToken); 3813 } catch (RemoteException e) { 3814 // Empty 3815 } 3816 } else { 3817 return mParent.getRequestedOrientation(); 3818 } 3819 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3820 } 3821 3822 /** 3823 * Return the identifier of the task this activity is in. This identifier 3824 * will remain the same for the lifetime of the activity. 3825 * 3826 * @return Task identifier, an opaque integer. 3827 */ 3828 public int getTaskId() { 3829 try { 3830 return ActivityManagerNative.getDefault() 3831 .getTaskForActivity(mToken, false); 3832 } catch (RemoteException e) { 3833 return -1; 3834 } 3835 } 3836 3837 /** 3838 * Return whether this activity is the root of a task. The root is the 3839 * first activity in a task. 3840 * 3841 * @return True if this is the root activity, else false. 3842 */ 3843 public boolean isTaskRoot() { 3844 try { 3845 return ActivityManagerNative.getDefault() 3846 .getTaskForActivity(mToken, true) >= 0; 3847 } catch (RemoteException e) { 3848 return false; 3849 } 3850 } 3851 3852 /** 3853 * Move the task containing this activity to the back of the activity 3854 * stack. The activity's order within the task is unchanged. 3855 * 3856 * @param nonRoot If false then this only works if the activity is the root 3857 * of a task; if true it will work for any activity in 3858 * a task. 3859 * 3860 * @return If the task was moved (or it was already at the 3861 * back) true is returned, else false. 3862 */ 3863 public boolean moveTaskToBack(boolean nonRoot) { 3864 try { 3865 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3866 mToken, nonRoot); 3867 } catch (RemoteException e) { 3868 // Empty 3869 } 3870 return false; 3871 } 3872 3873 /** 3874 * Returns class name for this activity with the package prefix removed. 3875 * This is the default name used to read and write settings. 3876 * 3877 * @return The local class name. 3878 */ 3879 public String getLocalClassName() { 3880 final String pkg = getPackageName(); 3881 final String cls = mComponent.getClassName(); 3882 int packageLen = pkg.length(); 3883 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3884 || cls.charAt(packageLen) != '.') { 3885 return cls; 3886 } 3887 return cls.substring(packageLen+1); 3888 } 3889 3890 /** 3891 * Returns complete component name of this activity. 3892 * 3893 * @return Returns the complete component name for this activity 3894 */ 3895 public ComponentName getComponentName() 3896 { 3897 return mComponent; 3898 } 3899 3900 /** 3901 * Retrieve a {@link SharedPreferences} object for accessing preferences 3902 * that are private to this activity. This simply calls the underlying 3903 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3904 * class name as the preferences name. 3905 * 3906 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3907 * operation, {@link #MODE_WORLD_READABLE} and 3908 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3909 * 3910 * @return Returns the single SharedPreferences instance that can be used 3911 * to retrieve and modify the preference values. 3912 */ 3913 public SharedPreferences getPreferences(int mode) { 3914 return getSharedPreferences(getLocalClassName(), mode); 3915 } 3916 3917 private void ensureSearchManager() { 3918 if (mSearchManager != null) { 3919 return; 3920 } 3921 3922 mSearchManager = new SearchManager(this, null); 3923 } 3924 3925 @Override 3926 public Object getSystemService(String name) { 3927 if (getBaseContext() == null) { 3928 throw new IllegalStateException( 3929 "System services not available to Activities before onCreate()"); 3930 } 3931 3932 if (WINDOW_SERVICE.equals(name)) { 3933 return mWindowManager; 3934 } else if (SEARCH_SERVICE.equals(name)) { 3935 ensureSearchManager(); 3936 return mSearchManager; 3937 } 3938 return super.getSystemService(name); 3939 } 3940 3941 /** 3942 * Change the title associated with this activity. If this is a 3943 * top-level activity, the title for its window will change. If it 3944 * is an embedded activity, the parent can do whatever it wants 3945 * with it. 3946 */ 3947 public void setTitle(CharSequence title) { 3948 mTitle = title; 3949 onTitleChanged(title, mTitleColor); 3950 3951 if (mParent != null) { 3952 mParent.onChildTitleChanged(this, title); 3953 } 3954 } 3955 3956 /** 3957 * Change the title associated with this activity. If this is a 3958 * top-level activity, the title for its window will change. If it 3959 * is an embedded activity, the parent can do whatever it wants 3960 * with it. 3961 */ 3962 public void setTitle(int titleId) { 3963 setTitle(getText(titleId)); 3964 } 3965 3966 public void setTitleColor(int textColor) { 3967 mTitleColor = textColor; 3968 onTitleChanged(mTitle, textColor); 3969 } 3970 3971 public final CharSequence getTitle() { 3972 return mTitle; 3973 } 3974 3975 public final int getTitleColor() { 3976 return mTitleColor; 3977 } 3978 3979 protected void onTitleChanged(CharSequence title, int color) { 3980 if (mTitleReady) { 3981 final Window win = getWindow(); 3982 if (win != null) { 3983 win.setTitle(title); 3984 if (color != 0) { 3985 win.setTitleColor(color); 3986 } 3987 } 3988 } 3989 } 3990 3991 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 3992 } 3993 3994 /** 3995 * Sets the visibility of the progress bar in the title. 3996 * <p> 3997 * In order for the progress bar to be shown, the feature must be requested 3998 * via {@link #requestWindowFeature(int)}. 3999 * 4000 * @param visible Whether to show the progress bars in the title. 4001 */ 4002 public final void setProgressBarVisibility(boolean visible) { 4003 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4004 Window.PROGRESS_VISIBILITY_OFF); 4005 } 4006 4007 /** 4008 * Sets the visibility of the indeterminate progress bar in the title. 4009 * <p> 4010 * In order for the progress bar to be shown, the feature must be requested 4011 * via {@link #requestWindowFeature(int)}. 4012 * 4013 * @param visible Whether to show the progress bars in the title. 4014 */ 4015 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4016 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4017 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4018 } 4019 4020 /** 4021 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4022 * is always indeterminate). 4023 * <p> 4024 * In order for the progress bar to be shown, the feature must be requested 4025 * via {@link #requestWindowFeature(int)}. 4026 * 4027 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4028 */ 4029 public final void setProgressBarIndeterminate(boolean indeterminate) { 4030 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4031 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4032 } 4033 4034 /** 4035 * Sets the progress for the progress bars in the title. 4036 * <p> 4037 * In order for the progress bar to be shown, the feature must be requested 4038 * via {@link #requestWindowFeature(int)}. 4039 * 4040 * @param progress The progress for the progress bar. Valid ranges are from 4041 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4042 * bar will be completely filled and will fade out. 4043 */ 4044 public final void setProgress(int progress) { 4045 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4046 } 4047 4048 /** 4049 * Sets the secondary progress for the progress bar in the title. This 4050 * progress is drawn between the primary progress (set via 4051 * {@link #setProgress(int)} and the background. It can be ideal for media 4052 * scenarios such as showing the buffering progress while the default 4053 * progress shows the play progress. 4054 * <p> 4055 * In order for the progress bar to be shown, the feature must be requested 4056 * via {@link #requestWindowFeature(int)}. 4057 * 4058 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4059 * 0 to 10000 (both inclusive). 4060 */ 4061 public final void setSecondaryProgress(int secondaryProgress) { 4062 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4063 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4064 } 4065 4066 /** 4067 * Suggests an audio stream whose volume should be changed by the hardware 4068 * volume controls. 4069 * <p> 4070 * The suggested audio stream will be tied to the window of this Activity. 4071 * If the Activity is switched, the stream set here is no longer the 4072 * suggested stream. The client does not need to save and restore the old 4073 * suggested stream value in onPause and onResume. 4074 * 4075 * @param streamType The type of the audio stream whose volume should be 4076 * changed by the hardware volume controls. It is not guaranteed that 4077 * the hardware volume controls will always change this stream's 4078 * volume (for example, if a call is in progress, its stream's volume 4079 * may be changed instead). To reset back to the default, use 4080 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4081 */ 4082 public final void setVolumeControlStream(int streamType) { 4083 getWindow().setVolumeControlStream(streamType); 4084 } 4085 4086 /** 4087 * Gets the suggested audio stream whose volume should be changed by the 4088 * harwdare volume controls. 4089 * 4090 * @return The suggested audio stream type whose volume should be changed by 4091 * the hardware volume controls. 4092 * @see #setVolumeControlStream(int) 4093 */ 4094 public final int getVolumeControlStream() { 4095 return getWindow().getVolumeControlStream(); 4096 } 4097 4098 /** 4099 * Runs the specified action on the UI thread. If the current thread is the UI 4100 * thread, then the action is executed immediately. If the current thread is 4101 * not the UI thread, the action is posted to the event queue of the UI thread. 4102 * 4103 * @param action the action to run on the UI thread 4104 */ 4105 public final void runOnUiThread(Runnable action) { 4106 if (Thread.currentThread() != mUiThread) { 4107 mHandler.post(action); 4108 } else { 4109 action.run(); 4110 } 4111 } 4112 4113 /** 4114 * Standard implementation of 4115 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4116 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4117 * This implementation does nothing and is for 4118 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4119 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4120 * 4121 * @see android.view.LayoutInflater#createView 4122 * @see android.view.Window#getLayoutInflater 4123 */ 4124 public View onCreateView(String name, Context context, AttributeSet attrs) { 4125 return null; 4126 } 4127 4128 /** 4129 * Standard implementation of 4130 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4131 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4132 * This implementation handles <fragment> tags to embed fragments inside 4133 * of the activity. 4134 * 4135 * @see android.view.LayoutInflater#createView 4136 * @see android.view.Window#getLayoutInflater 4137 */ 4138 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4139 if (!"fragment".equals(name)) { 4140 return onCreateView(name, context, attrs); 4141 } 4142 4143 String fname = attrs.getAttributeValue(null, "class"); 4144 TypedArray a = 4145 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4146 if (fname == null) { 4147 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4148 } 4149 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4150 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4151 a.recycle(); 4152 4153 int containerId = parent != null ? parent.getId() : 0; 4154 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4155 throw new IllegalArgumentException(attrs.getPositionDescription() 4156 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4157 } 4158 4159 // If we restored from a previous state, we may already have 4160 // instantiated this fragment from the state and should use 4161 // that instance instead of making a new one. 4162 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4163 if (fragment == null && tag != null) { 4164 fragment = mFragments.findFragmentByTag(tag); 4165 } 4166 if (fragment == null && containerId != View.NO_ID) { 4167 fragment = mFragments.findFragmentById(containerId); 4168 } 4169 4170 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4171 + Integer.toHexString(id) + " fname=" + fname 4172 + " existing=" + fragment); 4173 if (fragment == null) { 4174 fragment = Fragment.instantiate(this, fname); 4175 fragment.mFromLayout = true; 4176 fragment.mFragmentId = id != 0 ? id : containerId; 4177 fragment.mContainerId = containerId; 4178 fragment.mTag = tag; 4179 fragment.mInLayout = true; 4180 fragment.mImmediateActivity = this; 4181 fragment.mFragmentManager = mFragments; 4182 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4183 mFragments.addFragment(fragment, true); 4184 4185 } else if (fragment.mInLayout) { 4186 // A fragment already exists and it is not one we restored from 4187 // previous state. 4188 throw new IllegalArgumentException(attrs.getPositionDescription() 4189 + ": Duplicate id 0x" + Integer.toHexString(id) 4190 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4191 + " with another fragment for " + fname); 4192 } else { 4193 // This fragment was retained from a previous instance; get it 4194 // going now. 4195 fragment.mInLayout = true; 4196 fragment.mImmediateActivity = this; 4197 // If this fragment is newly instantiated (either right now, or 4198 // from last saved state), then give it the attributes to 4199 // initialize itself. 4200 if (!fragment.mRetaining) { 4201 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4202 } 4203 mFragments.moveToState(fragment); 4204 } 4205 4206 if (fragment.mView == null) { 4207 throw new IllegalStateException("Fragment " + fname 4208 + " did not create a view."); 4209 } 4210 if (id != 0) { 4211 fragment.mView.setId(id); 4212 } 4213 if (fragment.mView.getTag() == null) { 4214 fragment.mView.setTag(tag); 4215 } 4216 return fragment.mView; 4217 } 4218 4219 /** 4220 * Print the Activity's state into the given stream. This gets invoked if 4221 * you run "adb shell dumpsys activity <activity_component_name>". 4222 * 4223 * @param prefix Desired prefix to prepend at each line of output. 4224 * @param fd The raw file descriptor that the dump is being sent to. 4225 * @param writer The PrintWriter to which you should dump your state. This will be 4226 * closed for you after you return. 4227 * @param args additional arguments to the dump request. 4228 */ 4229 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4230 writer.print(prefix); writer.print("Local Activity "); 4231 writer.print(Integer.toHexString(System.identityHashCode(this))); 4232 writer.println(" State:"); 4233 String innerPrefix = prefix + " "; 4234 writer.print(innerPrefix); writer.print("mResumed="); 4235 writer.print(mResumed); writer.print(" mStopped="); 4236 writer.print(mStopped); writer.print(" mFinished="); 4237 writer.println(mFinished); 4238 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4239 writer.println(mLoadersStarted); 4240 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4241 writer.println(mChangingConfigurations); 4242 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4243 writer.println(mCurrentConfig); 4244 if (mLoaderManager != null) { 4245 writer.print(prefix); writer.print("Loader Manager "); 4246 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4247 writer.println(":"); 4248 mLoaderManager.dump(prefix + " ", fd, writer, args); 4249 } 4250 mFragments.dump(prefix, fd, writer, args); 4251 } 4252 4253 /** 4254 * Bit indicating that this activity is "immersive" and should not be 4255 * interrupted by notifications if possible. 4256 * 4257 * This value is initially set by the manifest property 4258 * <code>android:immersive</code> but may be changed at runtime by 4259 * {@link #setImmersive}. 4260 * 4261 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4262 * @hide 4263 */ 4264 public boolean isImmersive() { 4265 try { 4266 return ActivityManagerNative.getDefault().isImmersive(mToken); 4267 } catch (RemoteException e) { 4268 return false; 4269 } 4270 } 4271 4272 /** 4273 * Adjust the current immersive mode setting. 4274 * 4275 * Note that changing this value will have no effect on the activity's 4276 * {@link android.content.pm.ActivityInfo} structure; that is, if 4277 * <code>android:immersive</code> is set to <code>true</code> 4278 * in the application's manifest entry for this activity, the {@link 4279 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4280 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4281 * FLAG_IMMERSIVE} bit set. 4282 * 4283 * @see #isImmersive 4284 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4285 * @hide 4286 */ 4287 public void setImmersive(boolean i) { 4288 try { 4289 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4290 } catch (RemoteException e) { 4291 // pass 4292 } 4293 } 4294 4295 /** 4296 * Start an action mode. 4297 * 4298 * @param callback Callback that will manage lifecycle events for this context mode 4299 * @return The ContextMode that was started, or null if it was canceled 4300 * 4301 * @see ActionMode 4302 */ 4303 public ActionMode startActionMode(ActionMode.Callback callback) { 4304 return mWindow.getDecorView().startActionMode(callback); 4305 } 4306 4307 /** 4308 * Give the Activity a chance to control the UI for an action mode requested 4309 * by the system. 4310 * 4311 * <p>Note: If you are looking for a notification callback that an action mode 4312 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4313 * 4314 * @param callback The callback that should control the new action mode 4315 * @return The new action mode, or <code>null</code> if the activity does not want to 4316 * provide special handling for this action mode. (It will be handled by the system.) 4317 */ 4318 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4319 initActionBar(); 4320 if (mActionBar != null) { 4321 return mActionBar.startActionMode(callback); 4322 } 4323 return null; 4324 } 4325 4326 /** 4327 * Notifies the Activity that an action mode has been started. 4328 * Activity subclasses overriding this method should call the superclass implementation. 4329 * 4330 * @param mode The new action mode. 4331 */ 4332 public void onActionModeStarted(ActionMode mode) { 4333 } 4334 4335 /** 4336 * Notifies the activity that an action mode has finished. 4337 * Activity subclasses overriding this method should call the superclass implementation. 4338 * 4339 * @param mode The action mode that just finished. 4340 */ 4341 public void onActionModeFinished(ActionMode mode) { 4342 } 4343 4344 // ------------------ Internal API ------------------ 4345 4346 final void setParent(Activity parent) { 4347 mParent = parent; 4348 } 4349 4350 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4351 Application application, Intent intent, ActivityInfo info, CharSequence title, 4352 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4353 Configuration config) { 4354 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4355 lastNonConfigurationInstances, config); 4356 } 4357 4358 final void attach(Context context, ActivityThread aThread, 4359 Instrumentation instr, IBinder token, int ident, 4360 Application application, Intent intent, ActivityInfo info, 4361 CharSequence title, Activity parent, String id, 4362 NonConfigurationInstances lastNonConfigurationInstances, 4363 Configuration config) { 4364 attachBaseContext(context); 4365 4366 mFragments.attachActivity(this); 4367 4368 mWindow = PolicyManager.makeNewWindow(this); 4369 mWindow.setCallback(this); 4370 mWindow.getLayoutInflater().setPrivateFactory(this); 4371 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4372 mWindow.setSoftInputMode(info.softInputMode); 4373 } 4374 mUiThread = Thread.currentThread(); 4375 4376 mMainThread = aThread; 4377 mInstrumentation = instr; 4378 mToken = token; 4379 mIdent = ident; 4380 mApplication = application; 4381 mIntent = intent; 4382 mComponent = intent.getComponent(); 4383 mActivityInfo = info; 4384 mTitle = title; 4385 mParent = parent; 4386 mEmbeddedID = id; 4387 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4388 4389 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4390 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4391 if (mParent != null) { 4392 mWindow.setContainer(mParent.getWindow()); 4393 } 4394 mWindowManager = mWindow.getWindowManager(); 4395 mCurrentConfig = config; 4396 } 4397 4398 final IBinder getActivityToken() { 4399 return mParent != null ? mParent.getActivityToken() : mToken; 4400 } 4401 4402 final void performCreate(Bundle icicle) { 4403 onCreate(icicle); 4404 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4405 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4406 mFragments.dispatchActivityCreated(); 4407 } 4408 4409 final void performStart() { 4410 mFragments.noteStateNotSaved(); 4411 mCalled = false; 4412 mFragments.execPendingActions(); 4413 mInstrumentation.callActivityOnStart(this); 4414 if (!mCalled) { 4415 throw new SuperNotCalledException( 4416 "Activity " + mComponent.toShortString() + 4417 " did not call through to super.onStart()"); 4418 } 4419 mFragments.dispatchStart(); 4420 if (mAllLoaderManagers != null) { 4421 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4422 mAllLoaderManagers.valueAt(i).finishRetain(); 4423 } 4424 } 4425 } 4426 4427 final void performRestart() { 4428 mFragments.noteStateNotSaved(); 4429 4430 if (mStopped) { 4431 mStopped = false; 4432 if (mToken != null && mParent == null) { 4433 WindowManagerImpl.getDefault().setStoppedState(mToken, false); 4434 } 4435 4436 synchronized (mManagedCursors) { 4437 final int N = mManagedCursors.size(); 4438 for (int i=0; i<N; i++) { 4439 ManagedCursor mc = mManagedCursors.get(i); 4440 if (mc.mReleased || mc.mUpdated) { 4441 if (!mc.mCursor.requery()) { 4442 throw new IllegalStateException( 4443 "trying to requery an already closed cursor " 4444 + mc.mCursor); 4445 } 4446 mc.mReleased = false; 4447 mc.mUpdated = false; 4448 } 4449 } 4450 } 4451 4452 mCalled = false; 4453 mInstrumentation.callActivityOnRestart(this); 4454 if (!mCalled) { 4455 throw new SuperNotCalledException( 4456 "Activity " + mComponent.toShortString() + 4457 " did not call through to super.onRestart()"); 4458 } 4459 performStart(); 4460 } 4461 } 4462 4463 final void performResume() { 4464 performRestart(); 4465 4466 mFragments.execPendingActions(); 4467 4468 mLastNonConfigurationInstances = null; 4469 4470 mCalled = false; 4471 // mResumed is set by the instrumentation 4472 mInstrumentation.callActivityOnResume(this); 4473 if (!mCalled) { 4474 throw new SuperNotCalledException( 4475 "Activity " + mComponent.toShortString() + 4476 " did not call through to super.onResume()"); 4477 } 4478 4479 // Now really resume, and install the current status bar and menu. 4480 mCalled = false; 4481 4482 mFragments.dispatchResume(); 4483 mFragments.execPendingActions(); 4484 4485 onPostResume(); 4486 if (!mCalled) { 4487 throw new SuperNotCalledException( 4488 "Activity " + mComponent.toShortString() + 4489 " did not call through to super.onPostResume()"); 4490 } 4491 } 4492 4493 final void performPause() { 4494 mFragments.dispatchPause(); 4495 mCalled = false; 4496 onPause(); 4497 mResumed = false; 4498 if (!mCalled && getApplicationInfo().targetSdkVersion 4499 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4500 throw new SuperNotCalledException( 4501 "Activity " + mComponent.toShortString() + 4502 " did not call through to super.onPause()"); 4503 } 4504 mResumed = false; 4505 } 4506 4507 final void performUserLeaving() { 4508 onUserInteraction(); 4509 onUserLeaveHint(); 4510 } 4511 4512 final void performStop() { 4513 if (mLoadersStarted) { 4514 mLoadersStarted = false; 4515 if (mLoaderManager != null) { 4516 if (!mChangingConfigurations) { 4517 mLoaderManager.doStop(); 4518 } else { 4519 mLoaderManager.doRetain(); 4520 } 4521 } 4522 } 4523 4524 if (!mStopped) { 4525 if (mWindow != null) { 4526 mWindow.closeAllPanels(); 4527 } 4528 4529 if (mToken != null && mParent == null) { 4530 WindowManagerImpl.getDefault().setStoppedState(mToken, true); 4531 } 4532 4533 mFragments.dispatchStop(); 4534 4535 mCalled = false; 4536 mInstrumentation.callActivityOnStop(this); 4537 if (!mCalled) { 4538 throw new SuperNotCalledException( 4539 "Activity " + mComponent.toShortString() + 4540 " did not call through to super.onStop()"); 4541 } 4542 4543 synchronized (mManagedCursors) { 4544 final int N = mManagedCursors.size(); 4545 for (int i=0; i<N; i++) { 4546 ManagedCursor mc = mManagedCursors.get(i); 4547 if (!mc.mReleased) { 4548 mc.mCursor.deactivate(); 4549 mc.mReleased = true; 4550 } 4551 } 4552 } 4553 4554 mStopped = true; 4555 } 4556 mResumed = false; 4557 } 4558 4559 final void performDestroy() { 4560 mWindow.destroy(); 4561 mFragments.dispatchDestroy(); 4562 onDestroy(); 4563 if (mLoaderManager != null) { 4564 mLoaderManager.doDestroy(); 4565 } 4566 } 4567 4568 /** 4569 * @hide 4570 */ 4571 public final boolean isResumed() { 4572 return mResumed; 4573 } 4574 4575 void dispatchActivityResult(String who, int requestCode, 4576 int resultCode, Intent data) { 4577 if (false) Log.v( 4578 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4579 + ", resCode=" + resultCode + ", data=" + data); 4580 mFragments.noteStateNotSaved(); 4581 if (who == null) { 4582 onActivityResult(requestCode, resultCode, data); 4583 } else { 4584 Fragment frag = mFragments.findFragmentByWho(who); 4585 if (frag != null) { 4586 frag.onActivityResult(requestCode, resultCode, data); 4587 } 4588 } 4589 } 4590} 4591