Activity.java revision 9b4bee0f14bbd137b0797127aff2df46a6321ec5
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 Thread mUiThread; 727 final Handler mHandler = new Handler(); 728 729 /** Return the intent that started this activity. */ 730 public Intent getIntent() { 731 return mIntent; 732 } 733 734 /** 735 * Change the intent returned by {@link #getIntent}. This holds a 736 * reference to the given intent; it does not copy it. Often used in 737 * conjunction with {@link #onNewIntent}. 738 * 739 * @param newIntent The new Intent object to return from getIntent 740 * 741 * @see #getIntent 742 * @see #onNewIntent 743 */ 744 public void setIntent(Intent newIntent) { 745 mIntent = newIntent; 746 } 747 748 /** Return the application that owns this activity. */ 749 public final Application getApplication() { 750 return mApplication; 751 } 752 753 /** Is this activity embedded inside of another activity? */ 754 public final boolean isChild() { 755 return mParent != null; 756 } 757 758 /** Return the parent activity if this view is an embedded child. */ 759 public final Activity getParent() { 760 return mParent; 761 } 762 763 /** Retrieve the window manager for showing custom windows. */ 764 public WindowManager getWindowManager() { 765 return mWindowManager; 766 } 767 768 /** 769 * Retrieve the current {@link android.view.Window} for the activity. 770 * This can be used to directly access parts of the Window API that 771 * are not available through Activity/Screen. 772 * 773 * @return Window The current window, or null if the activity is not 774 * visual. 775 */ 776 public Window getWindow() { 777 return mWindow; 778 } 779 780 /** 781 * Return the LoaderManager for this fragment, creating it if needed. 782 */ 783 public LoaderManager getLoaderManager() { 784 if (mLoaderManager != null) { 785 return mLoaderManager; 786 } 787 mCheckedForLoaderManager = true; 788 mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); 789 return mLoaderManager; 790 } 791 792 LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { 793 if (mAllLoaderManagers == null) { 794 mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); 795 } 796 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 797 if (lm == null) { 798 if (create) { 799 lm = new LoaderManagerImpl(this, started); 800 mAllLoaderManagers.put(index, lm); 801 } 802 } else { 803 lm.updateActivity(this); 804 } 805 return lm; 806 } 807 808 /** 809 * Calls {@link android.view.Window#getCurrentFocus} on the 810 * Window of this Activity to return the currently focused view. 811 * 812 * @return View The current View with focus or null. 813 * 814 * @see #getWindow 815 * @see android.view.Window#getCurrentFocus 816 */ 817 public View getCurrentFocus() { 818 return mWindow != null ? mWindow.getCurrentFocus() : null; 819 } 820 821 /** 822 * Called when the activity is starting. This is where most initialization 823 * should go: calling {@link #setContentView(int)} to inflate the 824 * activity's UI, using {@link #findViewById} to programmatically interact 825 * with widgets in the UI, calling 826 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 827 * cursors for data being displayed, etc. 828 * 829 * <p>You can call {@link #finish} from within this function, in 830 * which case onDestroy() will be immediately called without any of the rest 831 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 832 * {@link #onPause}, etc) executing. 833 * 834 * <p><em>Derived classes must call through to the super class's 835 * implementation of this method. If they do not, an exception will be 836 * thrown.</em></p> 837 * 838 * @param savedInstanceState If the activity is being re-initialized after 839 * previously being shut down then this Bundle contains the data it most 840 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 841 * 842 * @see #onStart 843 * @see #onSaveInstanceState 844 * @see #onRestoreInstanceState 845 * @see #onPostCreate 846 */ 847 protected void onCreate(Bundle savedInstanceState) { 848 if (mLastNonConfigurationInstances != null) { 849 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 850 } 851 if (savedInstanceState != null) { 852 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 853 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 854 ? mLastNonConfigurationInstances.fragments : null); 855 } 856 mFragments.dispatchCreate(); 857 mCalled = true; 858 } 859 860 /** 861 * The hook for {@link ActivityThread} to restore the state of this activity. 862 * 863 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 864 * {@link #restoreManagedDialogs(android.os.Bundle)}. 865 * 866 * @param savedInstanceState contains the saved state 867 */ 868 final void performRestoreInstanceState(Bundle savedInstanceState) { 869 onRestoreInstanceState(savedInstanceState); 870 restoreManagedDialogs(savedInstanceState); 871 } 872 873 /** 874 * This method is called after {@link #onStart} when the activity is 875 * being re-initialized from a previously saved state, given here in 876 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 877 * to restore their state, but it is sometimes convenient to do it here 878 * after all of the initialization has been done or to allow subclasses to 879 * decide whether to use your default implementation. The default 880 * implementation of this method performs a restore of any view state that 881 * had previously been frozen by {@link #onSaveInstanceState}. 882 * 883 * <p>This method is called between {@link #onStart} and 884 * {@link #onPostCreate}. 885 * 886 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 887 * 888 * @see #onCreate 889 * @see #onPostCreate 890 * @see #onResume 891 * @see #onSaveInstanceState 892 */ 893 protected void onRestoreInstanceState(Bundle savedInstanceState) { 894 if (mWindow != null) { 895 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 896 if (windowState != null) { 897 mWindow.restoreHierarchyState(windowState); 898 } 899 } 900 } 901 902 /** 903 * Restore the state of any saved managed dialogs. 904 * 905 * @param savedInstanceState The bundle to restore from. 906 */ 907 private void restoreManagedDialogs(Bundle savedInstanceState) { 908 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 909 if (b == null) { 910 return; 911 } 912 913 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 914 final int numDialogs = ids.length; 915 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 916 for (int i = 0; i < numDialogs; i++) { 917 final Integer dialogId = ids[i]; 918 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 919 if (dialogState != null) { 920 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 921 // so tell createDialog() not to do it, otherwise we get an exception 922 final ManagedDialog md = new ManagedDialog(); 923 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 924 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 925 if (md.mDialog != null) { 926 mManagedDialogs.put(dialogId, md); 927 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 928 md.mDialog.onRestoreInstanceState(dialogState); 929 } 930 } 931 } 932 } 933 934 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 935 final Dialog dialog = onCreateDialog(dialogId, args); 936 if (dialog == null) { 937 return null; 938 } 939 dialog.dispatchOnCreate(state); 940 return dialog; 941 } 942 943 private static String savedDialogKeyFor(int key) { 944 return SAVED_DIALOG_KEY_PREFIX + key; 945 } 946 947 private static String savedDialogArgsKeyFor(int key) { 948 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 949 } 950 951 /** 952 * Called when activity start-up is complete (after {@link #onStart} 953 * and {@link #onRestoreInstanceState} have been called). Applications will 954 * generally not implement this method; it is intended for system 955 * classes to do final initialization after application code has run. 956 * 957 * <p><em>Derived classes must call through to the super class's 958 * implementation of this method. If they do not, an exception will be 959 * thrown.</em></p> 960 * 961 * @param savedInstanceState If the activity is being re-initialized after 962 * previously being shut down then this Bundle contains the data it most 963 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 964 * @see #onCreate 965 */ 966 protected void onPostCreate(Bundle savedInstanceState) { 967 if (!isChild()) { 968 mTitleReady = true; 969 onTitleChanged(getTitle(), getTitleColor()); 970 } 971 mCalled = true; 972 } 973 974 /** 975 * Called after {@link #onCreate} — or after {@link #onRestart} when 976 * the activity had been stopped, but is now again being displayed to the 977 * user. It will be followed by {@link #onResume}. 978 * 979 * <p><em>Derived classes must call through to the super class's 980 * implementation of this method. If they do not, an exception will be 981 * thrown.</em></p> 982 * 983 * @see #onCreate 984 * @see #onStop 985 * @see #onResume 986 */ 987 protected void onStart() { 988 mCalled = true; 989 990 if (!mLoadersStarted) { 991 mLoadersStarted = true; 992 if (mLoaderManager != null) { 993 mLoaderManager.doStart(); 994 } else if (!mCheckedForLoaderManager) { 995 mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); 996 } 997 mCheckedForLoaderManager = true; 998 } 999 } 1000 1001 /** 1002 * Called after {@link #onStop} when the current activity is being 1003 * re-displayed to the user (the user has navigated back to it). It will 1004 * be followed by {@link #onStart} and then {@link #onResume}. 1005 * 1006 * <p>For activities that are using raw {@link Cursor} objects (instead of 1007 * creating them through 1008 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1009 * this is usually the place 1010 * where the cursor should be requeried (because you had deactivated it in 1011 * {@link #onStop}. 1012 * 1013 * <p><em>Derived classes must call through to the super class's 1014 * implementation of this method. If they do not, an exception will be 1015 * thrown.</em></p> 1016 * 1017 * @see #onStop 1018 * @see #onStart 1019 * @see #onResume 1020 */ 1021 protected void onRestart() { 1022 mCalled = true; 1023 } 1024 1025 /** 1026 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1027 * {@link #onPause}, for your activity to start interacting with the user. 1028 * This is a good place to begin animations, open exclusive-access devices 1029 * (such as the camera), etc. 1030 * 1031 * <p>Keep in mind that onResume is not the best indicator that your activity 1032 * is visible to the user; a system window such as the keyguard may be in 1033 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1034 * activity is visible to the user (for example, to resume a game). 1035 * 1036 * <p><em>Derived classes must call through to the super class's 1037 * implementation of this method. If they do not, an exception will be 1038 * thrown.</em></p> 1039 * 1040 * @see #onRestoreInstanceState 1041 * @see #onRestart 1042 * @see #onPostResume 1043 * @see #onPause 1044 */ 1045 protected void onResume() { 1046 mCalled = true; 1047 } 1048 1049 /** 1050 * Called when activity resume is complete (after {@link #onResume} has 1051 * been called). Applications will generally not implement this method; 1052 * it is intended for system classes to do final setup after application 1053 * resume code has run. 1054 * 1055 * <p><em>Derived classes must call through to the super class's 1056 * implementation of this method. If they do not, an exception will be 1057 * thrown.</em></p> 1058 * 1059 * @see #onResume 1060 */ 1061 protected void onPostResume() { 1062 final Window win = getWindow(); 1063 if (win != null) win.makeActive(); 1064 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1065 mCalled = true; 1066 } 1067 1068 /** 1069 * This is called for activities that set launchMode to "singleTop" in 1070 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1071 * flag when calling {@link #startActivity}. In either case, when the 1072 * activity is re-launched while at the top of the activity stack instead 1073 * of a new instance of the activity being started, onNewIntent() will be 1074 * called on the existing instance with the Intent that was used to 1075 * re-launch it. 1076 * 1077 * <p>An activity will always be paused before receiving a new intent, so 1078 * you can count on {@link #onResume} being called after this method. 1079 * 1080 * <p>Note that {@link #getIntent} still returns the original Intent. You 1081 * can use {@link #setIntent} to update it to this new Intent. 1082 * 1083 * @param intent The new intent that was started for the activity. 1084 * 1085 * @see #getIntent 1086 * @see #setIntent 1087 * @see #onResume 1088 */ 1089 protected void onNewIntent(Intent intent) { 1090 } 1091 1092 /** 1093 * The hook for {@link ActivityThread} to save the state of this activity. 1094 * 1095 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1096 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1097 * 1098 * @param outState The bundle to save the state to. 1099 */ 1100 final void performSaveInstanceState(Bundle outState) { 1101 onSaveInstanceState(outState); 1102 saveManagedDialogs(outState); 1103 } 1104 1105 /** 1106 * Called to retrieve per-instance state from an activity before being killed 1107 * so that the state can be restored in {@link #onCreate} or 1108 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1109 * will be passed to both). 1110 * 1111 * <p>This method is called before an activity may be killed so that when it 1112 * comes back some time in the future it can restore its state. For example, 1113 * if activity B is launched in front of activity A, and at some point activity 1114 * A is killed to reclaim resources, activity A will have a chance to save the 1115 * current state of its user interface via this method so that when the user 1116 * returns to activity A, the state of the user interface can be restored 1117 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1118 * 1119 * <p>Do not confuse this method with activity lifecycle callbacks such as 1120 * {@link #onPause}, which is always called when an activity is being placed 1121 * in the background or on its way to destruction, or {@link #onStop} which 1122 * is called before destruction. One example of when {@link #onPause} and 1123 * {@link #onStop} is called and not this method is when a user navigates back 1124 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1125 * on B because that particular instance will never be restored, so the 1126 * system avoids calling it. An example when {@link #onPause} is called and 1127 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1128 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1129 * killed during the lifetime of B since the state of the user interface of 1130 * A will stay intact. 1131 * 1132 * <p>The default implementation takes care of most of the UI per-instance 1133 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1134 * view in the hierarchy that has an id, and by saving the id of the currently 1135 * focused view (all of which is restored by the default implementation of 1136 * {@link #onRestoreInstanceState}). If you override this method to save additional 1137 * information not captured by each individual view, you will likely want to 1138 * call through to the default implementation, otherwise be prepared to save 1139 * all of the state of each view yourself. 1140 * 1141 * <p>If called, this method will occur before {@link #onStop}. There are 1142 * no guarantees about whether it will occur before or after {@link #onPause}. 1143 * 1144 * @param outState Bundle in which to place your saved state. 1145 * 1146 * @see #onCreate 1147 * @see #onRestoreInstanceState 1148 * @see #onPause 1149 */ 1150 protected void onSaveInstanceState(Bundle outState) { 1151 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1152 Parcelable p = mFragments.saveAllState(); 1153 if (p != null) { 1154 outState.putParcelable(FRAGMENTS_TAG, p); 1155 } 1156 } 1157 1158 /** 1159 * Save the state of any managed dialogs. 1160 * 1161 * @param outState place to store the saved state. 1162 */ 1163 private void saveManagedDialogs(Bundle outState) { 1164 if (mManagedDialogs == null) { 1165 return; 1166 } 1167 1168 final int numDialogs = mManagedDialogs.size(); 1169 if (numDialogs == 0) { 1170 return; 1171 } 1172 1173 Bundle dialogState = new Bundle(); 1174 1175 int[] ids = new int[mManagedDialogs.size()]; 1176 1177 // save each dialog's bundle, gather the ids 1178 for (int i = 0; i < numDialogs; i++) { 1179 final int key = mManagedDialogs.keyAt(i); 1180 ids[i] = key; 1181 final ManagedDialog md = mManagedDialogs.valueAt(i); 1182 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1183 if (md.mArgs != null) { 1184 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1185 } 1186 } 1187 1188 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1189 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1190 } 1191 1192 1193 /** 1194 * Called as part of the activity lifecycle when an activity is going into 1195 * the background, but has not (yet) been killed. The counterpart to 1196 * {@link #onResume}. 1197 * 1198 * <p>When activity B is launched in front of activity A, this callback will 1199 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1200 * so be sure to not do anything lengthy here. 1201 * 1202 * <p>This callback is mostly used for saving any persistent state the 1203 * activity is editing, to present a "edit in place" model to the user and 1204 * making sure nothing is lost if there are not enough resources to start 1205 * the new activity without first killing this one. This is also a good 1206 * place to do things like stop animations and other things that consume a 1207 * noticeable mount of CPU in order to make the switch to the next activity 1208 * as fast as possible, or to close resources that are exclusive access 1209 * such as the camera. 1210 * 1211 * <p>In situations where the system needs more memory it may kill paused 1212 * processes to reclaim resources. Because of this, you should be sure 1213 * that all of your state is saved by the time you return from 1214 * this function. In general {@link #onSaveInstanceState} is used to save 1215 * per-instance state in the activity and this method is used to store 1216 * global persistent data (in content providers, files, etc.) 1217 * 1218 * <p>After receiving this call you will usually receive a following call 1219 * to {@link #onStop} (after the next activity has been resumed and 1220 * displayed), however in some cases there will be a direct call back to 1221 * {@link #onResume} without going through the stopped state. 1222 * 1223 * <p><em>Derived classes must call through to the super class's 1224 * implementation of this method. If they do not, an exception will be 1225 * thrown.</em></p> 1226 * 1227 * @see #onResume 1228 * @see #onSaveInstanceState 1229 * @see #onStop 1230 */ 1231 protected void onPause() { 1232 mCalled = true; 1233 } 1234 1235 /** 1236 * Called as part of the activity lifecycle when an activity is about to go 1237 * into the background as the result of user choice. For example, when the 1238 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1239 * when an incoming phone call causes the in-call Activity to be automatically 1240 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1241 * the activity being interrupted. In cases when it is invoked, this method 1242 * is called right before the activity's {@link #onPause} callback. 1243 * 1244 * <p>This callback and {@link #onUserInteraction} are intended to help 1245 * activities manage status bar notifications intelligently; specifically, 1246 * for helping activities determine the proper time to cancel a notfication. 1247 * 1248 * @see #onUserInteraction() 1249 */ 1250 protected void onUserLeaveHint() { 1251 } 1252 1253 /** 1254 * Generate a new thumbnail for this activity. This method is called before 1255 * pausing the activity, and should draw into <var>outBitmap</var> the 1256 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1257 * can use the given <var>canvas</var>, which is configured to draw into the 1258 * bitmap, for rendering if desired. 1259 * 1260 * <p>The default implementation returns fails and does not draw a thumbnail; 1261 * this will result in the platform creating its own thumbnail if needed. 1262 * 1263 * @param outBitmap The bitmap to contain the thumbnail. 1264 * @param canvas Can be used to render into the bitmap. 1265 * 1266 * @return Return true if you have drawn into the bitmap; otherwise after 1267 * you return it will be filled with a default thumbnail. 1268 * 1269 * @see #onCreateDescription 1270 * @see #onSaveInstanceState 1271 * @see #onPause 1272 */ 1273 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1274 return false; 1275 } 1276 1277 /** 1278 * Generate a new description for this activity. This method is called 1279 * before pausing the activity and can, if desired, return some textual 1280 * description of its current state to be displayed to the user. 1281 * 1282 * <p>The default implementation returns null, which will cause you to 1283 * inherit the description from the previous activity. If all activities 1284 * return null, generally the label of the top activity will be used as the 1285 * description. 1286 * 1287 * @return A description of what the user is doing. It should be short and 1288 * sweet (only a few words). 1289 * 1290 * @see #onCreateThumbnail 1291 * @see #onSaveInstanceState 1292 * @see #onPause 1293 */ 1294 public CharSequence onCreateDescription() { 1295 return null; 1296 } 1297 1298 /** 1299 * Called when you are no longer visible to the user. You will next 1300 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1301 * depending on later user activity. 1302 * 1303 * <p>Note that this method may never be called, in low memory situations 1304 * where the system does not have enough memory to keep your activity's 1305 * process running after its {@link #onPause} method is called. 1306 * 1307 * <p><em>Derived classes must call through to the super class's 1308 * implementation of this method. If they do not, an exception will be 1309 * thrown.</em></p> 1310 * 1311 * @see #onRestart 1312 * @see #onResume 1313 * @see #onSaveInstanceState 1314 * @see #onDestroy 1315 */ 1316 protected void onStop() { 1317 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1318 mCalled = true; 1319 } 1320 1321 /** 1322 * Perform any final cleanup before an activity is destroyed. This can 1323 * happen either because the activity is finishing (someone called 1324 * {@link #finish} on it, or because the system is temporarily destroying 1325 * this instance of the activity to save space. You can distinguish 1326 * between these two scenarios with the {@link #isFinishing} method. 1327 * 1328 * <p><em>Note: do not count on this method being called as a place for 1329 * saving data! For example, if an activity is editing data in a content 1330 * provider, those edits should be committed in either {@link #onPause} or 1331 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1332 * free resources like threads that are associated with an activity, so 1333 * that a destroyed activity does not leave such things around while the 1334 * rest of its application is still running. There are situations where 1335 * the system will simply kill the activity's hosting process without 1336 * calling this method (or any others) in it, so it should not be used to 1337 * do things that are intended to remain around after the process goes 1338 * away. 1339 * 1340 * <p><em>Derived classes must call through to the super class's 1341 * implementation of this method. If they do not, an exception will be 1342 * thrown.</em></p> 1343 * 1344 * @see #onPause 1345 * @see #onStop 1346 * @see #finish 1347 * @see #isFinishing 1348 */ 1349 protected void onDestroy() { 1350 mCalled = true; 1351 1352 // dismiss any dialogs we are managing. 1353 if (mManagedDialogs != null) { 1354 final int numDialogs = mManagedDialogs.size(); 1355 for (int i = 0; i < numDialogs; i++) { 1356 final ManagedDialog md = mManagedDialogs.valueAt(i); 1357 if (md.mDialog.isShowing()) { 1358 md.mDialog.dismiss(); 1359 } 1360 } 1361 mManagedDialogs = null; 1362 } 1363 1364 // close any cursors we are managing. 1365 synchronized (mManagedCursors) { 1366 int numCursors = mManagedCursors.size(); 1367 for (int i = 0; i < numCursors; i++) { 1368 ManagedCursor c = mManagedCursors.get(i); 1369 if (c != null) { 1370 c.mCursor.close(); 1371 } 1372 } 1373 mManagedCursors.clear(); 1374 } 1375 1376 // Close any open search dialog 1377 if (mSearchManager != null) { 1378 mSearchManager.stopSearch(); 1379 } 1380 } 1381 1382 /** 1383 * Called by the system when the device configuration changes while your 1384 * activity is running. Note that this will <em>only</em> be called if 1385 * you have selected configurations you would like to handle with the 1386 * {@link android.R.attr#configChanges} attribute in your manifest. If 1387 * any configuration change occurs that is not selected to be reported 1388 * by that attribute, then instead of reporting it the system will stop 1389 * and restart the activity (to have it launched with the new 1390 * configuration). 1391 * 1392 * <p>At the time that this function has been called, your Resources 1393 * object will have been updated to return resource values matching the 1394 * new configuration. 1395 * 1396 * @param newConfig The new device configuration. 1397 */ 1398 public void onConfigurationChanged(Configuration newConfig) { 1399 mCalled = true; 1400 1401 mFragments.dispatchConfigurationChanged(newConfig); 1402 1403 if (mWindow != null) { 1404 // Pass the configuration changed event to the window 1405 mWindow.onConfigurationChanged(newConfig); 1406 } 1407 } 1408 1409 /** 1410 * If this activity is being destroyed because it can not handle a 1411 * configuration parameter being changed (and thus its 1412 * {@link #onConfigurationChanged(Configuration)} method is 1413 * <em>not</em> being called), then you can use this method to discover 1414 * the set of changes that have occurred while in the process of being 1415 * destroyed. Note that there is no guarantee that these will be 1416 * accurate (other changes could have happened at any time), so you should 1417 * only use this as an optimization hint. 1418 * 1419 * @return Returns a bit field of the configuration parameters that are 1420 * changing, as defined by the {@link android.content.res.Configuration} 1421 * class. 1422 */ 1423 public int getChangingConfigurations() { 1424 return mConfigChangeFlags; 1425 } 1426 1427 /** 1428 * @deprecated Use the new {@link Fragment} API 1429 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1430 * available on older platforms through the Android compatibility package. 1431 * 1432 * Retrieve the non-configuration instance data that was previously 1433 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1434 * be available from the initial {@link #onCreate} and 1435 * {@link #onStart} calls to the new instance, allowing you to extract 1436 * any useful dynamic state from the previous instance. 1437 * 1438 * <p>Note that the data you retrieve here should <em>only</em> be used 1439 * as an optimization for handling configuration changes. You should always 1440 * be able to handle getting a null pointer back, and an activity must 1441 * still be able to restore itself to its previous state (through the 1442 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1443 * function returns null. 1444 * 1445 * @return Returns the object previously returned by 1446 * {@link #onRetainNonConfigurationInstance()}. 1447 */ 1448 @Deprecated 1449 public Object getLastNonConfigurationInstance() { 1450 return mLastNonConfigurationInstances != null 1451 ? mLastNonConfigurationInstances.activity : null; 1452 } 1453 1454 /** 1455 * @deprecated Use the new {@link Fragment} API 1456 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1457 * available on older platforms through the Android compatibility package. 1458 * 1459 * Called by the system, as part of destroying an 1460 * activity due to a configuration change, when it is known that a new 1461 * instance will immediately be created for the new configuration. You 1462 * can return any object you like here, including the activity instance 1463 * itself, which can later be retrieved by calling 1464 * {@link #getLastNonConfigurationInstance()} in the new activity 1465 * instance. 1466 * 1467 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1468 * or later, consider instead using a {@link Fragment} with 1469 * {@link Fragment#setRetainInstance(boolean) 1470 * Fragment.setRetainInstance(boolean}.</em> 1471 * 1472 * <p>This function is called purely as an optimization, and you must 1473 * not rely on it being called. When it is called, a number of guarantees 1474 * will be made to help optimize configuration switching: 1475 * <ul> 1476 * <li> The function will be called between {@link #onStop} and 1477 * {@link #onDestroy}. 1478 * <li> A new instance of the activity will <em>always</em> be immediately 1479 * created after this one's {@link #onDestroy()} is called. In particular, 1480 * <em>no</em> messages will be dispatched during this time (when the returned 1481 * object does not have an activity to be associated with). 1482 * <li> The object you return here will <em>always</em> be available from 1483 * the {@link #getLastNonConfigurationInstance()} method of the following 1484 * activity instance as described there. 1485 * </ul> 1486 * 1487 * <p>These guarantees are designed so that an activity can use this API 1488 * to propagate extensive state from the old to new activity instance, from 1489 * loaded bitmaps, to network connections, to evenly actively running 1490 * threads. Note that you should <em>not</em> propagate any data that 1491 * may change based on the configuration, including any data loaded from 1492 * resources such as strings, layouts, or drawables. 1493 * 1494 * <p>The guarantee of no message handling during the switch to the next 1495 * activity simplifies use with active objects. For example if your retained 1496 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1497 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1498 * not be called from the call here until you execute the next instance's 1499 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1500 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1501 * running in a separate thread.) 1502 * 1503 * @return Return any Object holding the desired state to propagate to the 1504 * next activity instance. 1505 */ 1506 public Object onRetainNonConfigurationInstance() { 1507 return null; 1508 } 1509 1510 /** 1511 * Retrieve the non-configuration instance data that was previously 1512 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1513 * be available from the initial {@link #onCreate} and 1514 * {@link #onStart} calls to the new instance, allowing you to extract 1515 * any useful dynamic state from the previous instance. 1516 * 1517 * <p>Note that the data you retrieve here should <em>only</em> be used 1518 * as an optimization for handling configuration changes. You should always 1519 * be able to handle getting a null pointer back, and an activity must 1520 * still be able to restore itself to its previous state (through the 1521 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1522 * function returns null. 1523 * 1524 * @return Returns the object previously returned by 1525 * {@link #onRetainNonConfigurationChildInstances()} 1526 */ 1527 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1528 return mLastNonConfigurationInstances != null 1529 ? mLastNonConfigurationInstances.children : null; 1530 } 1531 1532 /** 1533 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1534 * it should return either a mapping from child activity id strings to arbitrary objects, 1535 * or null. This method is intended to be used by Activity framework subclasses that control a 1536 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1537 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1538 */ 1539 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1540 return null; 1541 } 1542 1543 NonConfigurationInstances retainNonConfigurationInstances() { 1544 Object activity = onRetainNonConfigurationInstance(); 1545 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1546 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1547 boolean retainLoaders = false; 1548 if (mAllLoaderManagers != null) { 1549 // prune out any loader managers that were already stopped and so 1550 // have nothing useful to retain. 1551 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 1552 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 1553 if (lm.mRetaining) { 1554 retainLoaders = true; 1555 } else { 1556 lm.doDestroy(); 1557 mAllLoaderManagers.removeAt(i); 1558 } 1559 } 1560 } 1561 if (activity == null && children == null && fragments == null && !retainLoaders) { 1562 return null; 1563 } 1564 1565 NonConfigurationInstances nci = new NonConfigurationInstances(); 1566 nci.activity = activity; 1567 nci.children = children; 1568 nci.fragments = fragments; 1569 nci.loaders = mAllLoaderManagers; 1570 return nci; 1571 } 1572 1573 public void onLowMemory() { 1574 mCalled = true; 1575 mFragments.dispatchLowMemory(); 1576 } 1577 1578 /** 1579 * Return the FragmentManager for interacting with fragments associated 1580 * with this activity. 1581 */ 1582 public FragmentManager getFragmentManager() { 1583 return mFragments; 1584 } 1585 1586 void invalidateFragmentIndex(int index) { 1587 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1588 if (mAllLoaderManagers != null) { 1589 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 1590 if (lm != null) { 1591 lm.doDestroy(); 1592 } 1593 mAllLoaderManagers.remove(index); 1594 } 1595 } 1596 1597 /** 1598 * Called when a Fragment is being attached to this activity, immediately 1599 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1600 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1601 */ 1602 public void onAttachFragment(Fragment fragment) { 1603 } 1604 1605 /** 1606 * Wrapper around 1607 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1608 * that gives the resulting {@link Cursor} to call 1609 * {@link #startManagingCursor} so that the activity will manage its 1610 * lifecycle for you. 1611 * 1612 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1613 * or later, consider instead using {@link LoaderManager} instead, available 1614 * via {@link #getLoaderManager()}.</em> 1615 * 1616 * @param uri The URI of the content provider to query. 1617 * @param projection List of columns to return. 1618 * @param selection SQL WHERE clause. 1619 * @param sortOrder SQL ORDER BY clause. 1620 * 1621 * @return The Cursor that was returned by query(). 1622 * 1623 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1624 * @see #startManagingCursor 1625 * @hide 1626 * 1627 * @deprecated Use {@link CursorLoader} instead. 1628 */ 1629 @Deprecated 1630 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1631 String sortOrder) { 1632 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1633 if (c != null) { 1634 startManagingCursor(c); 1635 } 1636 return c; 1637 } 1638 1639 /** 1640 * Wrapper around 1641 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1642 * that gives the resulting {@link Cursor} to call 1643 * {@link #startManagingCursor} so that the activity will manage its 1644 * lifecycle for you. 1645 * 1646 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1647 * or later, consider instead using {@link LoaderManager} instead, available 1648 * via {@link #getLoaderManager()}.</em> 1649 * 1650 * @param uri The URI of the content provider to query. 1651 * @param projection List of columns to return. 1652 * @param selection SQL WHERE clause. 1653 * @param selectionArgs The arguments to selection, if any ?s are pesent 1654 * @param sortOrder SQL ORDER BY clause. 1655 * 1656 * @return The Cursor that was returned by query(). 1657 * 1658 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1659 * @see #startManagingCursor 1660 * 1661 * @deprecated Use {@link CursorLoader} instead. 1662 */ 1663 @Deprecated 1664 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1665 String[] selectionArgs, String sortOrder) { 1666 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1667 if (c != null) { 1668 startManagingCursor(c); 1669 } 1670 return c; 1671 } 1672 1673 /** 1674 * @deprecated Use the new {@link android.content.CursorLoader} class with 1675 * {@link LoaderManager} instead; this is also 1676 * available on older platforms through the Android compatibility package. 1677 * 1678 * This method allows the activity to take care of managing the given 1679 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1680 * That is, when the activity is stopped it will automatically call 1681 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1682 * it will call {@link Cursor#requery} for you. When the activity is 1683 * destroyed, all managed Cursors will be closed automatically. 1684 * 1685 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1686 * or later, consider instead using {@link LoaderManager} instead, available 1687 * via {@link #getLoaderManager()}.</em> 1688 * 1689 * @param c The Cursor to be managed. 1690 * 1691 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1692 * @see #stopManagingCursor 1693 */ 1694 @Deprecated 1695 public void startManagingCursor(Cursor c) { 1696 synchronized (mManagedCursors) { 1697 mManagedCursors.add(new ManagedCursor(c)); 1698 } 1699 } 1700 1701 /** 1702 * @deprecated Use the new {@link android.content.CursorLoader} class with 1703 * {@link LoaderManager} instead; this is also 1704 * available on older platforms through the Android compatibility package. 1705 * 1706 * Given a Cursor that was previously given to 1707 * {@link #startManagingCursor}, stop the activity's management of that 1708 * cursor. 1709 * 1710 * @param c The Cursor that was being managed. 1711 * 1712 * @see #startManagingCursor 1713 */ 1714 @Deprecated 1715 public void stopManagingCursor(Cursor c) { 1716 synchronized (mManagedCursors) { 1717 final int N = mManagedCursors.size(); 1718 for (int i=0; i<N; i++) { 1719 ManagedCursor mc = mManagedCursors.get(i); 1720 if (mc.mCursor == c) { 1721 mManagedCursors.remove(i); 1722 break; 1723 } 1724 } 1725 } 1726 } 1727 1728 /** 1729 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1730 * this is a no-op. 1731 * @hide 1732 */ 1733 @Deprecated 1734 public void setPersistent(boolean isPersistent) { 1735 } 1736 1737 /** 1738 * Finds a view that was identified by the id attribute from the XML that 1739 * was processed in {@link #onCreate}. 1740 * 1741 * @return The view if found or null otherwise. 1742 */ 1743 public View findViewById(int id) { 1744 return getWindow().findViewById(id); 1745 } 1746 1747 /** 1748 * Retrieve a reference to this activity's ActionBar. 1749 * 1750 * @return The Activity's ActionBar, or null if it does not have one. 1751 */ 1752 public ActionBar getActionBar() { 1753 initActionBar(); 1754 return mActionBar; 1755 } 1756 1757 /** 1758 * Creates a new ActionBar, locates the inflated ActionBarView, 1759 * initializes the ActionBar with the view, and sets mActionBar. 1760 */ 1761 private void initActionBar() { 1762 Window window = getWindow(); 1763 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1764 return; 1765 } 1766 1767 mActionBar = new ActionBarImpl(this); 1768 } 1769 1770 /** 1771 * Set the activity content from a layout resource. The resource will be 1772 * inflated, adding all top-level views to the activity. 1773 * 1774 * @param layoutResID Resource ID to be inflated. 1775 * 1776 * @see #setContentView(android.view.View) 1777 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1778 */ 1779 public void setContentView(int layoutResID) { 1780 getWindow().setContentView(layoutResID); 1781 initActionBar(); 1782 } 1783 1784 /** 1785 * Set the activity content to an explicit view. This view is placed 1786 * directly into the activity's view hierarchy. It can itself be a complex 1787 * view hierarchy. When calling this method, the layout parameters of the 1788 * specified view are ignored. Both the width and the height of the view are 1789 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1790 * your own layout parameters, invoke 1791 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1792 * instead. 1793 * 1794 * @param view The desired content to display. 1795 * 1796 * @see #setContentView(int) 1797 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1798 */ 1799 public void setContentView(View view) { 1800 getWindow().setContentView(view); 1801 initActionBar(); 1802 } 1803 1804 /** 1805 * Set the activity content to an explicit view. This view is placed 1806 * directly into the activity's view hierarchy. It can itself be a complex 1807 * view hierarchy. 1808 * 1809 * @param view The desired content to display. 1810 * @param params Layout parameters for the view. 1811 * 1812 * @see #setContentView(android.view.View) 1813 * @see #setContentView(int) 1814 */ 1815 public void setContentView(View view, ViewGroup.LayoutParams params) { 1816 getWindow().setContentView(view, params); 1817 initActionBar(); 1818 } 1819 1820 /** 1821 * Add an additional content view to the activity. Added after any existing 1822 * ones in the activity -- existing views are NOT removed. 1823 * 1824 * @param view The desired content to display. 1825 * @param params Layout parameters for the view. 1826 */ 1827 public void addContentView(View view, ViewGroup.LayoutParams params) { 1828 getWindow().addContentView(view, params); 1829 initActionBar(); 1830 } 1831 1832 /** 1833 * Sets whether this activity is finished when touched outside its window's 1834 * bounds. 1835 */ 1836 public void setFinishOnTouchOutside(boolean finish) { 1837 mWindow.setCloseOnTouchOutside(finish); 1838 } 1839 1840 /** 1841 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1842 * keys. 1843 * 1844 * @see #setDefaultKeyMode 1845 */ 1846 static public final int DEFAULT_KEYS_DISABLE = 0; 1847 /** 1848 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1849 * key handling. 1850 * 1851 * @see #setDefaultKeyMode 1852 */ 1853 static public final int DEFAULT_KEYS_DIALER = 1; 1854 /** 1855 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1856 * default key handling. 1857 * 1858 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1859 * 1860 * @see #setDefaultKeyMode 1861 */ 1862 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1863 /** 1864 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1865 * will start an application-defined search. (If the application or activity does not 1866 * actually define a search, the the keys will be ignored.) 1867 * 1868 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1869 * 1870 * @see #setDefaultKeyMode 1871 */ 1872 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1873 1874 /** 1875 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1876 * will start a global search (typically web search, but some platforms may define alternate 1877 * methods for global search) 1878 * 1879 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1880 * 1881 * @see #setDefaultKeyMode 1882 */ 1883 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1884 1885 /** 1886 * Select the default key handling for this activity. This controls what 1887 * will happen to key events that are not otherwise handled. The default 1888 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1889 * floor. Other modes allow you to launch the dialer 1890 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1891 * menu without requiring the menu key be held down 1892 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1893 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1894 * 1895 * <p>Note that the mode selected here does not impact the default 1896 * handling of system keys, such as the "back" and "menu" keys, and your 1897 * activity and its views always get a first chance to receive and handle 1898 * all application keys. 1899 * 1900 * @param mode The desired default key mode constant. 1901 * 1902 * @see #DEFAULT_KEYS_DISABLE 1903 * @see #DEFAULT_KEYS_DIALER 1904 * @see #DEFAULT_KEYS_SHORTCUT 1905 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1906 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1907 * @see #onKeyDown 1908 */ 1909 public final void setDefaultKeyMode(int mode) { 1910 mDefaultKeyMode = mode; 1911 1912 // Some modes use a SpannableStringBuilder to track & dispatch input events 1913 // This list must remain in sync with the switch in onKeyDown() 1914 switch (mode) { 1915 case DEFAULT_KEYS_DISABLE: 1916 case DEFAULT_KEYS_SHORTCUT: 1917 mDefaultKeySsb = null; // not used in these modes 1918 break; 1919 case DEFAULT_KEYS_DIALER: 1920 case DEFAULT_KEYS_SEARCH_LOCAL: 1921 case DEFAULT_KEYS_SEARCH_GLOBAL: 1922 mDefaultKeySsb = new SpannableStringBuilder(); 1923 Selection.setSelection(mDefaultKeySsb,0); 1924 break; 1925 default: 1926 throw new IllegalArgumentException(); 1927 } 1928 } 1929 1930 /** 1931 * Called when a key was pressed down and not handled by any of the views 1932 * inside of the activity. So, for example, key presses while the cursor 1933 * is inside a TextView will not trigger the event (unless it is a navigation 1934 * to another object) because TextView handles its own key presses. 1935 * 1936 * <p>If the focused view didn't want this event, this method is called. 1937 * 1938 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1939 * by calling {@link #onBackPressed()}, though the behavior varies based 1940 * on the application compatibility mode: for 1941 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1942 * it will set up the dispatch to call {@link #onKeyUp} where the action 1943 * will be performed; for earlier applications, it will perform the 1944 * action immediately in on-down, as those versions of the platform 1945 * behaved. 1946 * 1947 * <p>Other additional default key handling may be performed 1948 * if configured with {@link #setDefaultKeyMode}. 1949 * 1950 * @return Return <code>true</code> to prevent this event from being propagated 1951 * further, or <code>false</code> to indicate that you have not handled 1952 * this event and it should continue to be propagated. 1953 * @see #onKeyUp 1954 * @see android.view.KeyEvent 1955 */ 1956 public boolean onKeyDown(int keyCode, KeyEvent event) { 1957 if (keyCode == KeyEvent.KEYCODE_BACK) { 1958 if (getApplicationInfo().targetSdkVersion 1959 >= Build.VERSION_CODES.ECLAIR) { 1960 event.startTracking(); 1961 } else { 1962 onBackPressed(); 1963 } 1964 return true; 1965 } 1966 1967 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 1968 return false; 1969 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 1970 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 1971 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 1972 return true; 1973 } 1974 return false; 1975 } else { 1976 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 1977 boolean clearSpannable = false; 1978 boolean handled; 1979 if ((event.getRepeatCount() != 0) || event.isSystem()) { 1980 clearSpannable = true; 1981 handled = false; 1982 } else { 1983 handled = TextKeyListener.getInstance().onKeyDown( 1984 null, mDefaultKeySsb, keyCode, event); 1985 if (handled && mDefaultKeySsb.length() > 0) { 1986 // something useable has been typed - dispatch it now. 1987 1988 final String str = mDefaultKeySsb.toString(); 1989 clearSpannable = true; 1990 1991 switch (mDefaultKeyMode) { 1992 case DEFAULT_KEYS_DIALER: 1993 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 1994 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 1995 startActivity(intent); 1996 break; 1997 case DEFAULT_KEYS_SEARCH_LOCAL: 1998 startSearch(str, false, null, false); 1999 break; 2000 case DEFAULT_KEYS_SEARCH_GLOBAL: 2001 startSearch(str, false, null, true); 2002 break; 2003 } 2004 } 2005 } 2006 if (clearSpannable) { 2007 mDefaultKeySsb.clear(); 2008 mDefaultKeySsb.clearSpans(); 2009 Selection.setSelection(mDefaultKeySsb,0); 2010 } 2011 return handled; 2012 } 2013 } 2014 2015 /** 2016 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2017 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2018 * the event). 2019 */ 2020 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2021 return false; 2022 } 2023 2024 /** 2025 * Called when a key was released and not handled by any of the views 2026 * inside of the activity. So, for example, key presses while the cursor 2027 * is inside a TextView will not trigger the event (unless it is a navigation 2028 * to another object) because TextView handles its own key presses. 2029 * 2030 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2031 * and go back. 2032 * 2033 * @return Return <code>true</code> to prevent this event from being propagated 2034 * further, or <code>false</code> to indicate that you have not handled 2035 * this event and it should continue to be propagated. 2036 * @see #onKeyDown 2037 * @see KeyEvent 2038 */ 2039 public boolean onKeyUp(int keyCode, KeyEvent event) { 2040 if (getApplicationInfo().targetSdkVersion 2041 >= Build.VERSION_CODES.ECLAIR) { 2042 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2043 && !event.isCanceled()) { 2044 onBackPressed(); 2045 return true; 2046 } 2047 } 2048 return false; 2049 } 2050 2051 /** 2052 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2053 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2054 * the event). 2055 */ 2056 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2057 return false; 2058 } 2059 2060 /** 2061 * Called when the activity has detected the user's press of the back 2062 * key. The default implementation simply finishes the current activity, 2063 * but you can override this to do whatever you want. 2064 */ 2065 public void onBackPressed() { 2066 if (!mFragments.popBackStackImmediate()) { 2067 finish(); 2068 } 2069 } 2070 2071 /** 2072 * Called when a key shortcut event is not handled by any of the views in the Activity. 2073 * Override this method to implement global key shortcuts for the Activity. 2074 * Key shortcuts can also be implemented by setting the 2075 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2076 * 2077 * @param keyCode The value in event.getKeyCode(). 2078 * @param event Description of the key event. 2079 * @return True if the key shortcut was handled. 2080 */ 2081 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2082 return false; 2083 } 2084 2085 /** 2086 * Called when a touch screen event was not handled by any of the views 2087 * under it. This is most useful to process touch events that happen 2088 * outside of your window bounds, where there is no view to receive it. 2089 * 2090 * @param event The touch screen event being processed. 2091 * 2092 * @return Return true if you have consumed the event, false if you haven't. 2093 * The default implementation always returns false. 2094 */ 2095 public boolean onTouchEvent(MotionEvent event) { 2096 if (mWindow.shouldCloseOnTouch(this, event)) { 2097 finish(); 2098 return true; 2099 } 2100 2101 return false; 2102 } 2103 2104 /** 2105 * Called when the trackball was moved and not handled by any of the 2106 * views inside of the activity. So, for example, if the trackball moves 2107 * while focus is on a button, you will receive a call here because 2108 * buttons do not normally do anything with trackball events. The call 2109 * here happens <em>before</em> trackball movements are converted to 2110 * DPAD key events, which then get sent back to the view hierarchy, and 2111 * will be processed at the point for things like focus navigation. 2112 * 2113 * @param event The trackball event being processed. 2114 * 2115 * @return Return true if you have consumed the event, false if you haven't. 2116 * The default implementation always returns false. 2117 */ 2118 public boolean onTrackballEvent(MotionEvent event) { 2119 return false; 2120 } 2121 2122 /** 2123 * Called when a generic motion event was not handled by any of the 2124 * views inside of the activity. 2125 * <p> 2126 * Generic motion events describe joystick movements, mouse hovers, track pad 2127 * touches, scroll wheel movements and other input events. The 2128 * {@link MotionEvent#getSource() source} of the motion event specifies 2129 * the class of input that was received. Implementations of this method 2130 * must examine the bits in the source before processing the event. 2131 * The following code example shows how this is done. 2132 * </p><p> 2133 * Generic motion events with source class 2134 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2135 * are delivered to the view under the pointer. All other generic motion events are 2136 * delivered to the focused view. 2137 * </p><p> 2138 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2139 * handle this event. 2140 * </p> 2141 * 2142 * @param event The generic motion event being processed. 2143 * 2144 * @return Return true if you have consumed the event, false if you haven't. 2145 * The default implementation always returns false. 2146 */ 2147 public boolean onGenericMotionEvent(MotionEvent event) { 2148 return false; 2149 } 2150 2151 /** 2152 * Called whenever a key, touch, or trackball event is dispatched to the 2153 * activity. Implement this method if you wish to know that the user has 2154 * interacted with the device in some way while your activity is running. 2155 * This callback and {@link #onUserLeaveHint} are intended to help 2156 * activities manage status bar notifications intelligently; specifically, 2157 * for helping activities determine the proper time to cancel a notfication. 2158 * 2159 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2160 * be accompanied by calls to {@link #onUserInteraction}. This 2161 * ensures that your activity will be told of relevant user activity such 2162 * as pulling down the notification pane and touching an item there. 2163 * 2164 * <p>Note that this callback will be invoked for the touch down action 2165 * that begins a touch gesture, but may not be invoked for the touch-moved 2166 * and touch-up actions that follow. 2167 * 2168 * @see #onUserLeaveHint() 2169 */ 2170 public void onUserInteraction() { 2171 } 2172 2173 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2174 // Update window manager if: we have a view, that view is 2175 // attached to its parent (which will be a RootView), and 2176 // this activity is not embedded. 2177 if (mParent == null) { 2178 View decor = mDecor; 2179 if (decor != null && decor.getParent() != null) { 2180 getWindowManager().updateViewLayout(decor, params); 2181 } 2182 } 2183 } 2184 2185 public void onContentChanged() { 2186 } 2187 2188 /** 2189 * Called when the current {@link Window} of the activity gains or loses 2190 * focus. This is the best indicator of whether this activity is visible 2191 * to the user. The default implementation clears the key tracking 2192 * state, so should always be called. 2193 * 2194 * <p>Note that this provides information about global focus state, which 2195 * is managed independently of activity lifecycles. As such, while focus 2196 * changes will generally have some relation to lifecycle changes (an 2197 * activity that is stopped will not generally get window focus), you 2198 * should not rely on any particular order between the callbacks here and 2199 * those in the other lifecycle methods such as {@link #onResume}. 2200 * 2201 * <p>As a general rule, however, a resumed activity will have window 2202 * focus... unless it has displayed other dialogs or popups that take 2203 * input focus, in which case the activity itself will not have focus 2204 * when the other windows have it. Likewise, the system may display 2205 * system-level windows (such as the status bar notification panel or 2206 * a system alert) which will temporarily take window input focus without 2207 * pausing the foreground activity. 2208 * 2209 * @param hasFocus Whether the window of this activity has focus. 2210 * 2211 * @see #hasWindowFocus() 2212 * @see #onResume 2213 * @see View#onWindowFocusChanged(boolean) 2214 */ 2215 public void onWindowFocusChanged(boolean hasFocus) { 2216 } 2217 2218 /** 2219 * Called when the main window associated with the activity has been 2220 * attached to the window manager. 2221 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2222 * for more information. 2223 * @see View#onAttachedToWindow 2224 */ 2225 public void onAttachedToWindow() { 2226 } 2227 2228 /** 2229 * Called when the main window associated with the activity has been 2230 * detached from the window manager. 2231 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2232 * for more information. 2233 * @see View#onDetachedFromWindow 2234 */ 2235 public void onDetachedFromWindow() { 2236 } 2237 2238 /** 2239 * Returns true if this activity's <em>main</em> window currently has window focus. 2240 * Note that this is not the same as the view itself having focus. 2241 * 2242 * @return True if this activity's main window currently has window focus. 2243 * 2244 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2245 */ 2246 public boolean hasWindowFocus() { 2247 Window w = getWindow(); 2248 if (w != null) { 2249 View d = w.getDecorView(); 2250 if (d != null) { 2251 return d.hasWindowFocus(); 2252 } 2253 } 2254 return false; 2255 } 2256 2257 /** 2258 * Called to process key events. You can override this to intercept all 2259 * key events before they are dispatched to the window. Be sure to call 2260 * this implementation for key events that should be handled normally. 2261 * 2262 * @param event The key event. 2263 * 2264 * @return boolean Return true if this event was consumed. 2265 */ 2266 public boolean dispatchKeyEvent(KeyEvent event) { 2267 onUserInteraction(); 2268 Window win = getWindow(); 2269 if (win.superDispatchKeyEvent(event)) { 2270 return true; 2271 } 2272 View decor = mDecor; 2273 if (decor == null) decor = win.getDecorView(); 2274 return event.dispatch(this, decor != null 2275 ? decor.getKeyDispatcherState() : null, this); 2276 } 2277 2278 /** 2279 * Called to process a key shortcut event. 2280 * You can override this to intercept all key shortcut events before they are 2281 * dispatched to the window. Be sure to call this implementation for key shortcut 2282 * events that should be handled normally. 2283 * 2284 * @param event The key shortcut event. 2285 * @return True if this event was consumed. 2286 */ 2287 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2288 onUserInteraction(); 2289 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2290 return true; 2291 } 2292 return onKeyShortcut(event.getKeyCode(), event); 2293 } 2294 2295 /** 2296 * Called to process touch screen events. You can override this to 2297 * intercept all touch screen events before they are dispatched to the 2298 * window. Be sure to call this implementation for touch screen events 2299 * that should be handled normally. 2300 * 2301 * @param ev The touch screen event. 2302 * 2303 * @return boolean Return true if this event was consumed. 2304 */ 2305 public boolean dispatchTouchEvent(MotionEvent ev) { 2306 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2307 onUserInteraction(); 2308 } 2309 if (getWindow().superDispatchTouchEvent(ev)) { 2310 return true; 2311 } 2312 return onTouchEvent(ev); 2313 } 2314 2315 /** 2316 * Called to process trackball events. You can override this to 2317 * intercept all trackball events before they are dispatched to the 2318 * window. Be sure to call this implementation for trackball events 2319 * that should be handled normally. 2320 * 2321 * @param ev The trackball event. 2322 * 2323 * @return boolean Return true if this event was consumed. 2324 */ 2325 public boolean dispatchTrackballEvent(MotionEvent ev) { 2326 onUserInteraction(); 2327 if (getWindow().superDispatchTrackballEvent(ev)) { 2328 return true; 2329 } 2330 return onTrackballEvent(ev); 2331 } 2332 2333 /** 2334 * Called to process generic motion events. You can override this to 2335 * intercept all generic motion events before they are dispatched to the 2336 * window. Be sure to call this implementation for generic motion events 2337 * that should be handled normally. 2338 * 2339 * @param ev The generic motion event. 2340 * 2341 * @return boolean Return true if this event was consumed. 2342 */ 2343 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2344 onUserInteraction(); 2345 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2346 return true; 2347 } 2348 return onGenericMotionEvent(ev); 2349 } 2350 2351 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2352 event.setClassName(getClass().getName()); 2353 event.setPackageName(getPackageName()); 2354 2355 LayoutParams params = getWindow().getAttributes(); 2356 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2357 (params.height == LayoutParams.MATCH_PARENT); 2358 event.setFullScreen(isFullScreen); 2359 2360 CharSequence title = getTitle(); 2361 if (!TextUtils.isEmpty(title)) { 2362 event.getText().add(title); 2363 } 2364 2365 return true; 2366 } 2367 2368 /** 2369 * Default implementation of 2370 * {@link android.view.Window.Callback#onCreatePanelView} 2371 * for activities. This 2372 * simply returns null so that all panel sub-windows will have the default 2373 * menu behavior. 2374 */ 2375 public View onCreatePanelView(int featureId) { 2376 return null; 2377 } 2378 2379 /** 2380 * Default implementation of 2381 * {@link android.view.Window.Callback#onCreatePanelMenu} 2382 * for activities. This calls through to the new 2383 * {@link #onCreateOptionsMenu} method for the 2384 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2385 * so that subclasses of Activity don't need to deal with feature codes. 2386 */ 2387 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2388 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2389 boolean show = onCreateOptionsMenu(menu); 2390 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2391 return show; 2392 } 2393 return false; 2394 } 2395 2396 /** 2397 * Default implementation of 2398 * {@link android.view.Window.Callback#onPreparePanel} 2399 * for activities. This 2400 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2401 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2402 * panel, so that subclasses of 2403 * Activity don't need to deal with feature codes. 2404 */ 2405 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2406 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2407 boolean goforit = onPrepareOptionsMenu(menu); 2408 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2409 return goforit && menu.hasVisibleItems(); 2410 } 2411 return true; 2412 } 2413 2414 /** 2415 * {@inheritDoc} 2416 * 2417 * @return The default implementation returns true. 2418 */ 2419 public boolean onMenuOpened(int featureId, Menu menu) { 2420 if (featureId == Window.FEATURE_ACTION_BAR) { 2421 initActionBar(); 2422 if (mActionBar != null) { 2423 mActionBar.dispatchMenuVisibilityChanged(true); 2424 } else { 2425 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2426 } 2427 } 2428 return true; 2429 } 2430 2431 /** 2432 * Default implementation of 2433 * {@link android.view.Window.Callback#onMenuItemSelected} 2434 * for activities. This calls through to the new 2435 * {@link #onOptionsItemSelected} method for the 2436 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2437 * panel, so that subclasses of 2438 * Activity don't need to deal with feature codes. 2439 */ 2440 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2441 switch (featureId) { 2442 case Window.FEATURE_OPTIONS_PANEL: 2443 // Put event logging here so it gets called even if subclass 2444 // doesn't call through to superclass's implmeentation of each 2445 // of these methods below 2446 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2447 if (onOptionsItemSelected(item)) { 2448 return true; 2449 } 2450 return mFragments.dispatchOptionsItemSelected(item); 2451 2452 case Window.FEATURE_CONTEXT_MENU: 2453 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2454 if (onContextItemSelected(item)) { 2455 return true; 2456 } 2457 return mFragments.dispatchContextItemSelected(item); 2458 2459 default: 2460 return false; 2461 } 2462 } 2463 2464 /** 2465 * Default implementation of 2466 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2467 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2468 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2469 * so that subclasses of Activity don't need to deal with feature codes. 2470 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2471 * {@link #onContextMenuClosed(Menu)} will be called. 2472 */ 2473 public void onPanelClosed(int featureId, Menu menu) { 2474 switch (featureId) { 2475 case Window.FEATURE_OPTIONS_PANEL: 2476 mFragments.dispatchOptionsMenuClosed(menu); 2477 onOptionsMenuClosed(menu); 2478 break; 2479 2480 case Window.FEATURE_CONTEXT_MENU: 2481 onContextMenuClosed(menu); 2482 break; 2483 2484 case Window.FEATURE_ACTION_BAR: 2485 initActionBar(); 2486 mActionBar.dispatchMenuVisibilityChanged(false); 2487 break; 2488 } 2489 } 2490 2491 /** 2492 * Declare that the options menu has changed, so should be recreated. 2493 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2494 * time it needs to be displayed. 2495 */ 2496 public void invalidateOptionsMenu() { 2497 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2498 } 2499 2500 /** 2501 * Initialize the contents of the Activity's standard options menu. You 2502 * should place your menu items in to <var>menu</var>. 2503 * 2504 * <p>This is only called once, the first time the options menu is 2505 * displayed. To update the menu every time it is displayed, see 2506 * {@link #onPrepareOptionsMenu}. 2507 * 2508 * <p>The default implementation populates the menu with standard system 2509 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2510 * they will be correctly ordered with application-defined menu items. 2511 * Deriving classes should always call through to the base implementation. 2512 * 2513 * <p>You can safely hold on to <var>menu</var> (and any items created 2514 * from it), making modifications to it as desired, until the next 2515 * time onCreateOptionsMenu() is called. 2516 * 2517 * <p>When you add items to the menu, you can implement the Activity's 2518 * {@link #onOptionsItemSelected} method to handle them there. 2519 * 2520 * @param menu The options menu in which you place your items. 2521 * 2522 * @return You must return true for the menu to be displayed; 2523 * if you return false it will not be shown. 2524 * 2525 * @see #onPrepareOptionsMenu 2526 * @see #onOptionsItemSelected 2527 */ 2528 public boolean onCreateOptionsMenu(Menu menu) { 2529 if (mParent != null) { 2530 return mParent.onCreateOptionsMenu(menu); 2531 } 2532 return true; 2533 } 2534 2535 /** 2536 * Prepare the Screen's standard options menu to be displayed. This is 2537 * called right before the menu is shown, every time it is shown. You can 2538 * use this method to efficiently enable/disable items or otherwise 2539 * dynamically modify the contents. 2540 * 2541 * <p>The default implementation updates the system menu items based on the 2542 * activity's state. Deriving classes should always call through to the 2543 * base class implementation. 2544 * 2545 * @param menu The options menu as last shown or first initialized by 2546 * onCreateOptionsMenu(). 2547 * 2548 * @return You must return true for the menu to be displayed; 2549 * if you return false it will not be shown. 2550 * 2551 * @see #onCreateOptionsMenu 2552 */ 2553 public boolean onPrepareOptionsMenu(Menu menu) { 2554 if (mParent != null) { 2555 return mParent.onPrepareOptionsMenu(menu); 2556 } 2557 return true; 2558 } 2559 2560 /** 2561 * This hook is called whenever an item in your options menu is selected. 2562 * The default implementation simply returns false to have the normal 2563 * processing happen (calling the item's Runnable or sending a message to 2564 * its Handler as appropriate). You can use this method for any items 2565 * for which you would like to do processing without those other 2566 * facilities. 2567 * 2568 * <p>Derived classes should call through to the base class for it to 2569 * perform the default menu handling. 2570 * 2571 * @param item The menu item that was selected. 2572 * 2573 * @return boolean Return false to allow normal menu processing to 2574 * proceed, true to consume it here. 2575 * 2576 * @see #onCreateOptionsMenu 2577 */ 2578 public boolean onOptionsItemSelected(MenuItem item) { 2579 if (mParent != null) { 2580 return mParent.onOptionsItemSelected(item); 2581 } 2582 return false; 2583 } 2584 2585 /** 2586 * This hook is called whenever the options menu is being closed (either by the user canceling 2587 * the menu with the back/menu button, or when an item is selected). 2588 * 2589 * @param menu The options menu as last shown or first initialized by 2590 * onCreateOptionsMenu(). 2591 */ 2592 public void onOptionsMenuClosed(Menu menu) { 2593 if (mParent != null) { 2594 mParent.onOptionsMenuClosed(menu); 2595 } 2596 } 2597 2598 /** 2599 * Programmatically opens the options menu. If the options menu is already 2600 * open, this method does nothing. 2601 */ 2602 public void openOptionsMenu() { 2603 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2604 } 2605 2606 /** 2607 * Progammatically closes the options menu. If the options menu is already 2608 * closed, this method does nothing. 2609 */ 2610 public void closeOptionsMenu() { 2611 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2612 } 2613 2614 /** 2615 * Called when a context menu for the {@code view} is about to be shown. 2616 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2617 * time the context menu is about to be shown and should be populated for 2618 * the view (or item inside the view for {@link AdapterView} subclasses, 2619 * this can be found in the {@code menuInfo})). 2620 * <p> 2621 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2622 * item has been selected. 2623 * <p> 2624 * It is not safe to hold onto the context menu after this method returns. 2625 * {@inheritDoc} 2626 */ 2627 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2628 } 2629 2630 /** 2631 * Registers a context menu to be shown for the given view (multiple views 2632 * can show the context menu). This method will set the 2633 * {@link OnCreateContextMenuListener} on the view to this activity, so 2634 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2635 * called when it is time to show the context menu. 2636 * 2637 * @see #unregisterForContextMenu(View) 2638 * @param view The view that should show a context menu. 2639 */ 2640 public void registerForContextMenu(View view) { 2641 view.setOnCreateContextMenuListener(this); 2642 } 2643 2644 /** 2645 * Prevents a context menu to be shown for the given view. This method will remove the 2646 * {@link OnCreateContextMenuListener} on the view. 2647 * 2648 * @see #registerForContextMenu(View) 2649 * @param view The view that should stop showing a context menu. 2650 */ 2651 public void unregisterForContextMenu(View view) { 2652 view.setOnCreateContextMenuListener(null); 2653 } 2654 2655 /** 2656 * Programmatically opens the context menu for a particular {@code view}. 2657 * The {@code view} should have been added via 2658 * {@link #registerForContextMenu(View)}. 2659 * 2660 * @param view The view to show the context menu for. 2661 */ 2662 public void openContextMenu(View view) { 2663 view.showContextMenu(); 2664 } 2665 2666 /** 2667 * Programmatically closes the most recently opened context menu, if showing. 2668 */ 2669 public void closeContextMenu() { 2670 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2671 } 2672 2673 /** 2674 * This hook is called whenever an item in a context menu is selected. The 2675 * default implementation simply returns false to have the normal processing 2676 * happen (calling the item's Runnable or sending a message to its Handler 2677 * as appropriate). You can use this method for any items for which you 2678 * would like to do processing without those other facilities. 2679 * <p> 2680 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2681 * View that added this menu item. 2682 * <p> 2683 * Derived classes should call through to the base class for it to perform 2684 * the default menu handling. 2685 * 2686 * @param item The context menu item that was selected. 2687 * @return boolean Return false to allow normal context menu processing to 2688 * proceed, true to consume it here. 2689 */ 2690 public boolean onContextItemSelected(MenuItem item) { 2691 if (mParent != null) { 2692 return mParent.onContextItemSelected(item); 2693 } 2694 return false; 2695 } 2696 2697 /** 2698 * This hook is called whenever the context menu is being closed (either by 2699 * the user canceling the menu with the back/menu button, or when an item is 2700 * selected). 2701 * 2702 * @param menu The context menu that is being closed. 2703 */ 2704 public void onContextMenuClosed(Menu menu) { 2705 if (mParent != null) { 2706 mParent.onContextMenuClosed(menu); 2707 } 2708 } 2709 2710 /** 2711 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2712 */ 2713 @Deprecated 2714 protected Dialog onCreateDialog(int id) { 2715 return null; 2716 } 2717 2718 /** 2719 * @deprecated Use the new {@link DialogFragment} class with 2720 * {@link FragmentManager} instead; this is also 2721 * available on older platforms through the Android compatibility package. 2722 * 2723 * Callback for creating dialogs that are managed (saved and restored) for you 2724 * by the activity. The default implementation calls through to 2725 * {@link #onCreateDialog(int)} for compatibility. 2726 * 2727 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2728 * or later, consider instead using a {@link DialogFragment} instead.</em> 2729 * 2730 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2731 * this method the first time, and hang onto it thereafter. Any dialog 2732 * that is created by this method will automatically be saved and restored 2733 * for you, including whether it is showing. 2734 * 2735 * <p>If you would like the activity to manage saving and restoring dialogs 2736 * for you, you should override this method and handle any ids that are 2737 * passed to {@link #showDialog}. 2738 * 2739 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2740 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2741 * 2742 * @param id The id of the dialog. 2743 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2744 * @return The dialog. If you return null, the dialog will not be created. 2745 * 2746 * @see #onPrepareDialog(int, Dialog, Bundle) 2747 * @see #showDialog(int, Bundle) 2748 * @see #dismissDialog(int) 2749 * @see #removeDialog(int) 2750 */ 2751 @Deprecated 2752 protected Dialog onCreateDialog(int id, Bundle args) { 2753 return onCreateDialog(id); 2754 } 2755 2756 /** 2757 * @deprecated Old no-arguments version of 2758 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2759 */ 2760 @Deprecated 2761 protected void onPrepareDialog(int id, Dialog dialog) { 2762 dialog.setOwnerActivity(this); 2763 } 2764 2765 /** 2766 * @deprecated Use the new {@link DialogFragment} class with 2767 * {@link FragmentManager} instead; this is also 2768 * available on older platforms through the Android compatibility package. 2769 * 2770 * Provides an opportunity to prepare a managed dialog before it is being 2771 * shown. The default implementation calls through to 2772 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2773 * 2774 * <p> 2775 * Override this if you need to update a managed dialog based on the state 2776 * of the application each time it is shown. For example, a time picker 2777 * dialog might want to be updated with the current time. You should call 2778 * through to the superclass's implementation. The default implementation 2779 * will set this Activity as the owner activity on the Dialog. 2780 * 2781 * @param id The id of the managed dialog. 2782 * @param dialog The dialog. 2783 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2784 * @see #onCreateDialog(int, Bundle) 2785 * @see #showDialog(int) 2786 * @see #dismissDialog(int) 2787 * @see #removeDialog(int) 2788 */ 2789 @Deprecated 2790 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2791 onPrepareDialog(id, dialog); 2792 } 2793 2794 /** 2795 * @deprecated Use the new {@link DialogFragment} class with 2796 * {@link FragmentManager} instead; this is also 2797 * available on older platforms through the Android compatibility package. 2798 * 2799 * Simple version of {@link #showDialog(int, Bundle)} that does not 2800 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2801 * with null arguments. 2802 */ 2803 @Deprecated 2804 public final void showDialog(int id) { 2805 showDialog(id, null); 2806 } 2807 2808 /** 2809 * @deprecated Use the new {@link DialogFragment} class with 2810 * {@link FragmentManager} instead; this is also 2811 * available on older platforms through the Android compatibility package. 2812 * 2813 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2814 * will be made with the same id the first time this is called for a given 2815 * id. From thereafter, the dialog will be automatically saved and restored. 2816 * 2817 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2818 * or later, consider instead using a {@link DialogFragment} instead.</em> 2819 * 2820 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2821 * be made to provide an opportunity to do any timely preparation. 2822 * 2823 * @param id The id of the managed dialog. 2824 * @param args Arguments to pass through to the dialog. These will be saved 2825 * and restored for you. Note that if the dialog is already created, 2826 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2827 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2828 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2829 * @return Returns true if the Dialog was created; false is returned if 2830 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2831 * 2832 * @see Dialog 2833 * @see #onCreateDialog(int, Bundle) 2834 * @see #onPrepareDialog(int, Dialog, Bundle) 2835 * @see #dismissDialog(int) 2836 * @see #removeDialog(int) 2837 */ 2838 @Deprecated 2839 public final boolean showDialog(int id, Bundle args) { 2840 if (mManagedDialogs == null) { 2841 mManagedDialogs = new SparseArray<ManagedDialog>(); 2842 } 2843 ManagedDialog md = mManagedDialogs.get(id); 2844 if (md == null) { 2845 md = new ManagedDialog(); 2846 md.mDialog = createDialog(id, null, args); 2847 if (md.mDialog == null) { 2848 return false; 2849 } 2850 mManagedDialogs.put(id, md); 2851 } 2852 2853 md.mArgs = args; 2854 onPrepareDialog(id, md.mDialog, args); 2855 md.mDialog.show(); 2856 return true; 2857 } 2858 2859 /** 2860 * @deprecated Use the new {@link DialogFragment} class with 2861 * {@link FragmentManager} instead; this is also 2862 * available on older platforms through the Android compatibility package. 2863 * 2864 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2865 * 2866 * @param id The id of the managed dialog. 2867 * 2868 * @throws IllegalArgumentException if the id was not previously shown via 2869 * {@link #showDialog(int)}. 2870 * 2871 * @see #onCreateDialog(int, Bundle) 2872 * @see #onPrepareDialog(int, Dialog, Bundle) 2873 * @see #showDialog(int) 2874 * @see #removeDialog(int) 2875 */ 2876 @Deprecated 2877 public final void dismissDialog(int id) { 2878 if (mManagedDialogs == null) { 2879 throw missingDialog(id); 2880 } 2881 2882 final ManagedDialog md = mManagedDialogs.get(id); 2883 if (md == null) { 2884 throw missingDialog(id); 2885 } 2886 md.mDialog.dismiss(); 2887 } 2888 2889 /** 2890 * Creates an exception to throw if a user passed in a dialog id that is 2891 * unexpected. 2892 */ 2893 private IllegalArgumentException missingDialog(int id) { 2894 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2895 + "shown via Activity#showDialog"); 2896 } 2897 2898 /** 2899 * @deprecated Use the new {@link DialogFragment} class with 2900 * {@link FragmentManager} instead; this is also 2901 * available on older platforms through the Android compatibility package. 2902 * 2903 * Removes any internal references to a dialog managed by this Activity. 2904 * If the dialog is showing, it will dismiss it as part of the clean up. 2905 * 2906 * <p>This can be useful if you know that you will never show a dialog again and 2907 * want to avoid the overhead of saving and restoring it in the future. 2908 * 2909 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2910 * will not throw an exception if you try to remove an ID that does not 2911 * currently have an associated dialog.</p> 2912 * 2913 * @param id The id of the managed dialog. 2914 * 2915 * @see #onCreateDialog(int, Bundle) 2916 * @see #onPrepareDialog(int, Dialog, Bundle) 2917 * @see #showDialog(int) 2918 * @see #dismissDialog(int) 2919 */ 2920 @Deprecated 2921 public final void removeDialog(int id) { 2922 if (mManagedDialogs != null) { 2923 final ManagedDialog md = mManagedDialogs.get(id); 2924 if (md != null) { 2925 md.mDialog.dismiss(); 2926 mManagedDialogs.remove(id); 2927 } 2928 } 2929 } 2930 2931 /** 2932 * This hook is called when the user signals the desire to start a search. 2933 * 2934 * <p>You can use this function as a simple way to launch the search UI, in response to a 2935 * menu item, search button, or other widgets within your activity. Unless overidden, 2936 * calling this function is the same as calling 2937 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2938 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2939 * 2940 * <p>You can override this function to force global search, e.g. in response to a dedicated 2941 * search key, or to block search entirely (by simply returning false). 2942 * 2943 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2944 * The default implementation always returns {@code true}. 2945 * 2946 * @see android.app.SearchManager 2947 */ 2948 public boolean onSearchRequested() { 2949 startSearch(null, false, null, false); 2950 return true; 2951 } 2952 2953 /** 2954 * This hook is called to launch the search UI. 2955 * 2956 * <p>It is typically called from onSearchRequested(), either directly from 2957 * Activity.onSearchRequested() or from an overridden version in any given 2958 * Activity. If your goal is simply to activate search, it is preferred to call 2959 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2960 * is to inject specific data such as context data, it is preferred to <i>override</i> 2961 * onSearchRequested(), so that any callers to it will benefit from the override. 2962 * 2963 * @param initialQuery Any non-null non-empty string will be inserted as 2964 * pre-entered text in the search query box. 2965 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2966 * any further typing will replace it. This is useful for cases where an entire pre-formed 2967 * query is being inserted. If false, the selection point will be placed at the end of the 2968 * inserted query. This is useful when the inserted query is text that the user entered, 2969 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 2970 * if initialQuery is a non-empty string.</i> 2971 * @param appSearchData An application can insert application-specific 2972 * context here, in order to improve quality or specificity of its own 2973 * searches. This data will be returned with SEARCH intent(s). Null if 2974 * no extra data is required. 2975 * @param globalSearch If false, this will only launch the search that has been specifically 2976 * defined by the application (which is usually defined as a local search). If no default 2977 * search is defined in the current application or activity, global search will be launched. 2978 * If true, this will always launch a platform-global (e.g. web-based) search instead. 2979 * 2980 * @see android.app.SearchManager 2981 * @see #onSearchRequested 2982 */ 2983 public void startSearch(String initialQuery, boolean selectInitialQuery, 2984 Bundle appSearchData, boolean globalSearch) { 2985 ensureSearchManager(); 2986 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 2987 appSearchData, globalSearch); 2988 } 2989 2990 /** 2991 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 2992 * the search dialog. Made available for testing purposes. 2993 * 2994 * @param query The query to trigger. If empty, the request will be ignored. 2995 * @param appSearchData An application can insert application-specific 2996 * context here, in order to improve quality or specificity of its own 2997 * searches. This data will be returned with SEARCH intent(s). Null if 2998 * no extra data is required. 2999 */ 3000 public void triggerSearch(String query, Bundle appSearchData) { 3001 ensureSearchManager(); 3002 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3003 } 3004 3005 /** 3006 * Request that key events come to this activity. Use this if your 3007 * activity has no views with focus, but the activity still wants 3008 * a chance to process key events. 3009 * 3010 * @see android.view.Window#takeKeyEvents 3011 */ 3012 public void takeKeyEvents(boolean get) { 3013 getWindow().takeKeyEvents(get); 3014 } 3015 3016 /** 3017 * Enable extended window features. This is a convenience for calling 3018 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3019 * 3020 * @param featureId The desired feature as defined in 3021 * {@link android.view.Window}. 3022 * @return Returns true if the requested feature is supported and now 3023 * enabled. 3024 * 3025 * @see android.view.Window#requestFeature 3026 */ 3027 public final boolean requestWindowFeature(int featureId) { 3028 return getWindow().requestFeature(featureId); 3029 } 3030 3031 /** 3032 * Convenience for calling 3033 * {@link android.view.Window#setFeatureDrawableResource}. 3034 */ 3035 public final void setFeatureDrawableResource(int featureId, int resId) { 3036 getWindow().setFeatureDrawableResource(featureId, resId); 3037 } 3038 3039 /** 3040 * Convenience for calling 3041 * {@link android.view.Window#setFeatureDrawableUri}. 3042 */ 3043 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3044 getWindow().setFeatureDrawableUri(featureId, uri); 3045 } 3046 3047 /** 3048 * Convenience for calling 3049 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3050 */ 3051 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3052 getWindow().setFeatureDrawable(featureId, drawable); 3053 } 3054 3055 /** 3056 * Convenience for calling 3057 * {@link android.view.Window#setFeatureDrawableAlpha}. 3058 */ 3059 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3060 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3061 } 3062 3063 /** 3064 * Convenience for calling 3065 * {@link android.view.Window#getLayoutInflater}. 3066 */ 3067 public LayoutInflater getLayoutInflater() { 3068 return getWindow().getLayoutInflater(); 3069 } 3070 3071 /** 3072 * Returns a {@link MenuInflater} with this context. 3073 */ 3074 public MenuInflater getMenuInflater() { 3075 return new MenuInflater(this); 3076 } 3077 3078 @Override 3079 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3080 boolean first) { 3081 if (mParent == null) { 3082 super.onApplyThemeResource(theme, resid, first); 3083 } else { 3084 try { 3085 theme.setTo(mParent.getTheme()); 3086 } catch (Exception e) { 3087 // Empty 3088 } 3089 theme.applyStyle(resid, false); 3090 } 3091 } 3092 3093 /** 3094 * Launch an activity for which you would like a result when it finished. 3095 * When this activity exits, your 3096 * onActivityResult() method will be called with the given requestCode. 3097 * Using a negative requestCode is the same as calling 3098 * {@link #startActivity} (the activity is not launched as a sub-activity). 3099 * 3100 * <p>Note that this method should only be used with Intent protocols 3101 * that are defined to return a result. In other protocols (such as 3102 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3103 * not get the result when you expect. For example, if the activity you 3104 * are launching uses the singleTask launch mode, it will not run in your 3105 * task and thus you will immediately receive a cancel result. 3106 * 3107 * <p>As a special case, if you call startActivityForResult() with a requestCode 3108 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3109 * activity, then your window will not be displayed until a result is 3110 * returned back from the started activity. This is to avoid visible 3111 * flickering when redirecting to another activity. 3112 * 3113 * <p>This method throws {@link android.content.ActivityNotFoundException} 3114 * if there was no Activity found to run the given Intent. 3115 * 3116 * @param intent The intent to start. 3117 * @param requestCode If >= 0, this code will be returned in 3118 * onActivityResult() when the activity exits. 3119 * 3120 * @throws android.content.ActivityNotFoundException 3121 * 3122 * @see #startActivity 3123 */ 3124 public void startActivityForResult(Intent intent, int requestCode) { 3125 if (mParent == null) { 3126 Instrumentation.ActivityResult ar = 3127 mInstrumentation.execStartActivity( 3128 this, mMainThread.getApplicationThread(), mToken, this, 3129 intent, requestCode); 3130 if (ar != null) { 3131 mMainThread.sendActivityResult( 3132 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3133 ar.getResultData()); 3134 } 3135 if (requestCode >= 0) { 3136 // If this start is requesting a result, we can avoid making 3137 // the activity visible until the result is received. Setting 3138 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3139 // activity hidden during this time, to avoid flickering. 3140 // This can only be done when a result is requested because 3141 // that guarantees we will get information back when the 3142 // activity is finished, no matter what happens to it. 3143 mStartedActivity = true; 3144 } 3145 } else { 3146 mParent.startActivityFromChild(this, intent, requestCode); 3147 } 3148 } 3149 3150 /** 3151 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3152 * to use a IntentSender to describe the activity to be started. If 3153 * the IntentSender is for an activity, that activity will be started 3154 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3155 * here; otherwise, its associated action will be executed (such as 3156 * sending a broadcast) as if you had called 3157 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3158 * 3159 * @param intent The IntentSender to launch. 3160 * @param requestCode If >= 0, this code will be returned in 3161 * onActivityResult() when the activity exits. 3162 * @param fillInIntent If non-null, this will be provided as the 3163 * intent parameter to {@link IntentSender#sendIntent}. 3164 * @param flagsMask Intent flags in the original IntentSender that you 3165 * would like to change. 3166 * @param flagsValues Desired values for any bits set in 3167 * <var>flagsMask</var> 3168 * @param extraFlags Always set to 0. 3169 */ 3170 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3171 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3172 throws IntentSender.SendIntentException { 3173 if (mParent == null) { 3174 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3175 flagsMask, flagsValues, this); 3176 } else { 3177 mParent.startIntentSenderFromChild(this, intent, requestCode, 3178 fillInIntent, flagsMask, flagsValues, extraFlags); 3179 } 3180 } 3181 3182 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3183 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3184 throws IntentSender.SendIntentException { 3185 try { 3186 String resolvedType = null; 3187 if (fillInIntent != null) { 3188 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3189 } 3190 int result = ActivityManagerNative.getDefault() 3191 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3192 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3193 requestCode, flagsMask, flagsValues); 3194 if (result == IActivityManager.START_CANCELED) { 3195 throw new IntentSender.SendIntentException(); 3196 } 3197 Instrumentation.checkStartActivityResult(result, null); 3198 } catch (RemoteException e) { 3199 } 3200 if (requestCode >= 0) { 3201 // If this start is requesting a result, we can avoid making 3202 // the activity visible until the result is received. Setting 3203 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3204 // activity hidden during this time, to avoid flickering. 3205 // This can only be done when a result is requested because 3206 // that guarantees we will get information back when the 3207 // activity is finished, no matter what happens to it. 3208 mStartedActivity = true; 3209 } 3210 } 3211 3212 /** 3213 * Launch a new activity. You will not receive any information about when 3214 * the activity exits. This implementation overrides the base version, 3215 * providing information about 3216 * the activity performing the launch. Because of this additional 3217 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3218 * required; if not specified, the new activity will be added to the 3219 * task of the caller. 3220 * 3221 * <p>This method throws {@link android.content.ActivityNotFoundException} 3222 * if there was no Activity found to run the given Intent. 3223 * 3224 * @param intent The intent to start. 3225 * 3226 * @throws android.content.ActivityNotFoundException 3227 * 3228 * @see #startActivityForResult 3229 */ 3230 @Override 3231 public void startActivity(Intent intent) { 3232 startActivityForResult(intent, -1); 3233 } 3234 3235 /** 3236 * Launch a new activity. You will not receive any information about when 3237 * the activity exits. This implementation overrides the base version, 3238 * providing information about 3239 * the activity performing the launch. Because of this additional 3240 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3241 * required; if not specified, the new activity will be added to the 3242 * task of the caller. 3243 * 3244 * <p>This method throws {@link android.content.ActivityNotFoundException} 3245 * if there was no Activity found to run the given Intent. 3246 * 3247 * @param intents The intents to start. 3248 * 3249 * @throws android.content.ActivityNotFoundException 3250 * 3251 * @see #startActivityForResult 3252 */ 3253 @Override 3254 public void startActivities(Intent[] intents) { 3255 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3256 mToken, this, intents); 3257 } 3258 3259 /** 3260 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3261 * to start; see 3262 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3263 * for more information. 3264 * 3265 * @param intent The IntentSender to launch. 3266 * @param fillInIntent If non-null, this will be provided as the 3267 * intent parameter to {@link IntentSender#sendIntent}. 3268 * @param flagsMask Intent flags in the original IntentSender that you 3269 * would like to change. 3270 * @param flagsValues Desired values for any bits set in 3271 * <var>flagsMask</var> 3272 * @param extraFlags Always set to 0. 3273 */ 3274 public void startIntentSender(IntentSender intent, 3275 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3276 throws IntentSender.SendIntentException { 3277 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3278 flagsValues, extraFlags); 3279 } 3280 3281 /** 3282 * A special variation to launch an activity only if a new activity 3283 * instance is needed to handle the given Intent. In other words, this is 3284 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3285 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3286 * singleTask or singleTop 3287 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3288 * and the activity 3289 * that handles <var>intent</var> is the same as your currently running 3290 * activity, then a new instance is not needed. In this case, instead of 3291 * the normal behavior of calling {@link #onNewIntent} this function will 3292 * return and you can handle the Intent yourself. 3293 * 3294 * <p>This function can only be called from a top-level activity; if it is 3295 * called from a child activity, a runtime exception will be thrown. 3296 * 3297 * @param intent The intent to start. 3298 * @param requestCode If >= 0, this code will be returned in 3299 * onActivityResult() when the activity exits, as described in 3300 * {@link #startActivityForResult}. 3301 * 3302 * @return If a new activity was launched then true is returned; otherwise 3303 * false is returned and you must handle the Intent yourself. 3304 * 3305 * @see #startActivity 3306 * @see #startActivityForResult 3307 */ 3308 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3309 if (mParent == null) { 3310 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3311 try { 3312 result = ActivityManagerNative.getDefault() 3313 .startActivity(mMainThread.getApplicationThread(), 3314 intent, intent.resolveTypeIfNeeded( 3315 getContentResolver()), 3316 null, 0, 3317 mToken, mEmbeddedID, requestCode, true, false); 3318 } catch (RemoteException e) { 3319 // Empty 3320 } 3321 3322 Instrumentation.checkStartActivityResult(result, intent); 3323 3324 if (requestCode >= 0) { 3325 // If this start is requesting a result, we can avoid making 3326 // the activity visible until the result is received. Setting 3327 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3328 // activity hidden during this time, to avoid flickering. 3329 // This can only be done when a result is requested because 3330 // that guarantees we will get information back when the 3331 // activity is finished, no matter what happens to it. 3332 mStartedActivity = true; 3333 } 3334 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3335 } 3336 3337 throw new UnsupportedOperationException( 3338 "startActivityIfNeeded can only be called from a top-level activity"); 3339 } 3340 3341 /** 3342 * Special version of starting an activity, for use when you are replacing 3343 * other activity components. You can use this to hand the Intent off 3344 * to the next Activity that can handle it. You typically call this in 3345 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3346 * 3347 * @param intent The intent to dispatch to the next activity. For 3348 * correct behavior, this must be the same as the Intent that started 3349 * your own activity; the only changes you can make are to the extras 3350 * inside of it. 3351 * 3352 * @return Returns a boolean indicating whether there was another Activity 3353 * to start: true if there was a next activity to start, false if there 3354 * wasn't. In general, if true is returned you will then want to call 3355 * finish() on yourself. 3356 */ 3357 public boolean startNextMatchingActivity(Intent intent) { 3358 if (mParent == null) { 3359 try { 3360 return ActivityManagerNative.getDefault() 3361 .startNextMatchingActivity(mToken, intent); 3362 } catch (RemoteException e) { 3363 // Empty 3364 } 3365 return false; 3366 } 3367 3368 throw new UnsupportedOperationException( 3369 "startNextMatchingActivity can only be called from a top-level activity"); 3370 } 3371 3372 /** 3373 * This is called when a child activity of this one calls its 3374 * {@link #startActivity} or {@link #startActivityForResult} method. 3375 * 3376 * <p>This method throws {@link android.content.ActivityNotFoundException} 3377 * if there was no Activity found to run the given Intent. 3378 * 3379 * @param child The activity making the call. 3380 * @param intent The intent to start. 3381 * @param requestCode Reply request code. < 0 if reply is not requested. 3382 * 3383 * @throws android.content.ActivityNotFoundException 3384 * 3385 * @see #startActivity 3386 * @see #startActivityForResult 3387 */ 3388 public void startActivityFromChild(Activity child, Intent intent, 3389 int requestCode) { 3390 Instrumentation.ActivityResult ar = 3391 mInstrumentation.execStartActivity( 3392 this, mMainThread.getApplicationThread(), mToken, child, 3393 intent, requestCode); 3394 if (ar != null) { 3395 mMainThread.sendActivityResult( 3396 mToken, child.mEmbeddedID, requestCode, 3397 ar.getResultCode(), ar.getResultData()); 3398 } 3399 } 3400 3401 /** 3402 * This is called when a Fragment in this activity calls its 3403 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3404 * method. 3405 * 3406 * <p>This method throws {@link android.content.ActivityNotFoundException} 3407 * if there was no Activity found to run the given Intent. 3408 * 3409 * @param fragment The fragment making the call. 3410 * @param intent The intent to start. 3411 * @param requestCode Reply request code. < 0 if reply is not requested. 3412 * 3413 * @throws android.content.ActivityNotFoundException 3414 * 3415 * @see Fragment#startActivity 3416 * @see Fragment#startActivityForResult 3417 */ 3418 public void startActivityFromFragment(Fragment fragment, Intent intent, 3419 int requestCode) { 3420 Instrumentation.ActivityResult ar = 3421 mInstrumentation.execStartActivity( 3422 this, mMainThread.getApplicationThread(), mToken, fragment, 3423 intent, requestCode); 3424 if (ar != null) { 3425 mMainThread.sendActivityResult( 3426 mToken, fragment.mWho, requestCode, 3427 ar.getResultCode(), ar.getResultData()); 3428 } 3429 } 3430 3431 /** 3432 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3433 * taking a IntentSender; see 3434 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3435 * for more information. 3436 */ 3437 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3438 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3439 int extraFlags) 3440 throws IntentSender.SendIntentException { 3441 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3442 flagsMask, flagsValues, child); 3443 } 3444 3445 /** 3446 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3447 * or {@link #finish} to specify an explicit transition animation to 3448 * perform next. 3449 * @param enterAnim A resource ID of the animation resource to use for 3450 * the incoming activity. Use 0 for no animation. 3451 * @param exitAnim A resource ID of the animation resource to use for 3452 * the outgoing activity. Use 0 for no animation. 3453 */ 3454 public void overridePendingTransition(int enterAnim, int exitAnim) { 3455 try { 3456 ActivityManagerNative.getDefault().overridePendingTransition( 3457 mToken, getPackageName(), enterAnim, exitAnim); 3458 } catch (RemoteException e) { 3459 } 3460 } 3461 3462 /** 3463 * Call this to set the result that your activity will return to its 3464 * caller. 3465 * 3466 * @param resultCode The result code to propagate back to the originating 3467 * activity, often RESULT_CANCELED or RESULT_OK 3468 * 3469 * @see #RESULT_CANCELED 3470 * @see #RESULT_OK 3471 * @see #RESULT_FIRST_USER 3472 * @see #setResult(int, Intent) 3473 */ 3474 public final void setResult(int resultCode) { 3475 synchronized (this) { 3476 mResultCode = resultCode; 3477 mResultData = null; 3478 } 3479 } 3480 3481 /** 3482 * Call this to set the result that your activity will return to its 3483 * caller. 3484 * 3485 * @param resultCode The result code to propagate back to the originating 3486 * activity, often RESULT_CANCELED or RESULT_OK 3487 * @param data The data to propagate back to the originating activity. 3488 * 3489 * @see #RESULT_CANCELED 3490 * @see #RESULT_OK 3491 * @see #RESULT_FIRST_USER 3492 * @see #setResult(int) 3493 */ 3494 public final void setResult(int resultCode, Intent data) { 3495 synchronized (this) { 3496 mResultCode = resultCode; 3497 mResultData = data; 3498 } 3499 } 3500 3501 /** 3502 * Return the name of the package that invoked this activity. This is who 3503 * the data in {@link #setResult setResult()} will be sent to. You can 3504 * use this information to validate that the recipient is allowed to 3505 * receive the data. 3506 * 3507 * <p>Note: if the calling activity is not expecting a result (that is it 3508 * did not use the {@link #startActivityForResult} 3509 * form that includes a request code), then the calling package will be 3510 * null. 3511 * 3512 * @return The package of the activity that will receive your 3513 * reply, or null if none. 3514 */ 3515 public String getCallingPackage() { 3516 try { 3517 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3518 } catch (RemoteException e) { 3519 return null; 3520 } 3521 } 3522 3523 /** 3524 * Return the name of the activity that invoked this activity. This is 3525 * who the data in {@link #setResult setResult()} will be sent to. You 3526 * can use this information to validate that the recipient is allowed to 3527 * receive the data. 3528 * 3529 * <p>Note: if the calling activity is not expecting a result (that is it 3530 * did not use the {@link #startActivityForResult} 3531 * form that includes a request code), then the calling package will be 3532 * null. 3533 * 3534 * @return String The full name of the activity that will receive your 3535 * reply, or null if none. 3536 */ 3537 public ComponentName getCallingActivity() { 3538 try { 3539 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3540 } catch (RemoteException e) { 3541 return null; 3542 } 3543 } 3544 3545 /** 3546 * Control whether this activity's main window is visible. This is intended 3547 * only for the special case of an activity that is not going to show a 3548 * UI itself, but can't just finish prior to onResume() because it needs 3549 * to wait for a service binding or such. Setting this to false allows 3550 * you to prevent your UI from being shown during that time. 3551 * 3552 * <p>The default value for this is taken from the 3553 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3554 */ 3555 public void setVisible(boolean visible) { 3556 if (mVisibleFromClient != visible) { 3557 mVisibleFromClient = visible; 3558 if (mVisibleFromServer) { 3559 if (visible) makeVisible(); 3560 else mDecor.setVisibility(View.INVISIBLE); 3561 } 3562 } 3563 } 3564 3565 void makeVisible() { 3566 if (!mWindowAdded) { 3567 ViewManager wm = getWindowManager(); 3568 wm.addView(mDecor, getWindow().getAttributes()); 3569 mWindowAdded = true; 3570 } 3571 mDecor.setVisibility(View.VISIBLE); 3572 } 3573 3574 /** 3575 * Check to see whether this activity is in the process of finishing, 3576 * either because you called {@link #finish} on it or someone else 3577 * has requested that it finished. This is often used in 3578 * {@link #onPause} to determine whether the activity is simply pausing or 3579 * completely finishing. 3580 * 3581 * @return If the activity is finishing, returns true; else returns false. 3582 * 3583 * @see #finish 3584 */ 3585 public boolean isFinishing() { 3586 return mFinished; 3587 } 3588 3589 /** 3590 * Check to see whether this activity is in the process of being destroyed in order to be 3591 * recreated with a new configuration. This is often used in 3592 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3593 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3594 * 3595 * @return If the activity is being torn down in order to be recreated with a new configuration, 3596 * returns true; else returns false. 3597 */ 3598 public boolean isChangingConfigurations() { 3599 return mChangingConfigurations; 3600 } 3601 3602 /** 3603 * Cause this Activity to be recreated with a new instance. This results 3604 * in essentially the same flow as when the Activity is created due to 3605 * a configuration change -- the current instance will go through its 3606 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3607 */ 3608 public void recreate() { 3609 if (mParent != null) { 3610 throw new IllegalStateException("Can only be called on top-level activity"); 3611 } 3612 if (Looper.myLooper() != mMainThread.getLooper()) { 3613 throw new IllegalStateException("Must be called from main thread"); 3614 } 3615 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3616 } 3617 3618 /** 3619 * Call this when your activity is done and should be closed. The 3620 * ActivityResult is propagated back to whoever launched you via 3621 * onActivityResult(). 3622 */ 3623 public void finish() { 3624 if (mParent == null) { 3625 int resultCode; 3626 Intent resultData; 3627 synchronized (this) { 3628 resultCode = mResultCode; 3629 resultData = mResultData; 3630 } 3631 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 3632 try { 3633 if (ActivityManagerNative.getDefault() 3634 .finishActivity(mToken, resultCode, resultData)) { 3635 mFinished = true; 3636 } 3637 } catch (RemoteException e) { 3638 // Empty 3639 } 3640 } else { 3641 mParent.finishFromChild(this); 3642 } 3643 } 3644 3645 /** 3646 * This is called when a child activity of this one calls its 3647 * {@link #finish} method. The default implementation simply calls 3648 * finish() on this activity (the parent), finishing the entire group. 3649 * 3650 * @param child The activity making the call. 3651 * 3652 * @see #finish 3653 */ 3654 public void finishFromChild(Activity child) { 3655 finish(); 3656 } 3657 3658 /** 3659 * Force finish another activity that you had previously started with 3660 * {@link #startActivityForResult}. 3661 * 3662 * @param requestCode The request code of the activity that you had 3663 * given to startActivityForResult(). If there are multiple 3664 * activities started with this request code, they 3665 * will all be finished. 3666 */ 3667 public void finishActivity(int requestCode) { 3668 if (mParent == null) { 3669 try { 3670 ActivityManagerNative.getDefault() 3671 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3672 } catch (RemoteException e) { 3673 // Empty 3674 } 3675 } else { 3676 mParent.finishActivityFromChild(this, requestCode); 3677 } 3678 } 3679 3680 /** 3681 * This is called when a child activity of this one calls its 3682 * finishActivity(). 3683 * 3684 * @param child The activity making the call. 3685 * @param requestCode Request code that had been used to start the 3686 * activity. 3687 */ 3688 public void finishActivityFromChild(Activity child, int requestCode) { 3689 try { 3690 ActivityManagerNative.getDefault() 3691 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3692 } catch (RemoteException e) { 3693 // Empty 3694 } 3695 } 3696 3697 /** 3698 * Called when an activity you launched exits, giving you the requestCode 3699 * you started it with, the resultCode it returned, and any additional 3700 * data from it. The <var>resultCode</var> will be 3701 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3702 * didn't return any result, or crashed during its operation. 3703 * 3704 * <p>You will receive this call immediately before onResume() when your 3705 * activity is re-starting. 3706 * 3707 * @param requestCode The integer request code originally supplied to 3708 * startActivityForResult(), allowing you to identify who this 3709 * result came from. 3710 * @param resultCode The integer result code returned by the child activity 3711 * through its setResult(). 3712 * @param data An Intent, which can return result data to the caller 3713 * (various data can be attached to Intent "extras"). 3714 * 3715 * @see #startActivityForResult 3716 * @see #createPendingResult 3717 * @see #setResult(int) 3718 */ 3719 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3720 } 3721 3722 /** 3723 * Create a new PendingIntent object which you can hand to others 3724 * for them to use to send result data back to your 3725 * {@link #onActivityResult} callback. The created object will be either 3726 * one-shot (becoming invalid after a result is sent back) or multiple 3727 * (allowing any number of results to be sent through it). 3728 * 3729 * @param requestCode Private request code for the sender that will be 3730 * associated with the result data when it is returned. The sender can not 3731 * modify this value, allowing you to identify incoming results. 3732 * @param data Default data to supply in the result, which may be modified 3733 * by the sender. 3734 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3735 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3736 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3737 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3738 * or any of the flags as supported by 3739 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3740 * of the intent that can be supplied when the actual send happens. 3741 * 3742 * @return Returns an existing or new PendingIntent matching the given 3743 * parameters. May return null only if 3744 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3745 * supplied. 3746 * 3747 * @see PendingIntent 3748 */ 3749 public PendingIntent createPendingResult(int requestCode, Intent data, 3750 int flags) { 3751 String packageName = getPackageName(); 3752 try { 3753 IIntentSender target = 3754 ActivityManagerNative.getDefault().getIntentSender( 3755 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3756 mParent == null ? mToken : mParent.mToken, 3757 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3758 return target != null ? new PendingIntent(target) : null; 3759 } catch (RemoteException e) { 3760 // Empty 3761 } 3762 return null; 3763 } 3764 3765 /** 3766 * Change the desired orientation of this activity. If the activity 3767 * is currently in the foreground or otherwise impacting the screen 3768 * orientation, the screen will immediately be changed (possibly causing 3769 * the activity to be restarted). Otherwise, this will be used the next 3770 * time the activity is visible. 3771 * 3772 * @param requestedOrientation An orientation constant as used in 3773 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3774 */ 3775 public void setRequestedOrientation(int requestedOrientation) { 3776 if (mParent == null) { 3777 try { 3778 ActivityManagerNative.getDefault().setRequestedOrientation( 3779 mToken, requestedOrientation); 3780 } catch (RemoteException e) { 3781 // Empty 3782 } 3783 } else { 3784 mParent.setRequestedOrientation(requestedOrientation); 3785 } 3786 } 3787 3788 /** 3789 * Return the current requested orientation of the activity. This will 3790 * either be the orientation requested in its component's manifest, or 3791 * the last requested orientation given to 3792 * {@link #setRequestedOrientation(int)}. 3793 * 3794 * @return Returns an orientation constant as used in 3795 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3796 */ 3797 public int getRequestedOrientation() { 3798 if (mParent == null) { 3799 try { 3800 return ActivityManagerNative.getDefault() 3801 .getRequestedOrientation(mToken); 3802 } catch (RemoteException e) { 3803 // Empty 3804 } 3805 } else { 3806 return mParent.getRequestedOrientation(); 3807 } 3808 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3809 } 3810 3811 /** 3812 * Return the identifier of the task this activity is in. This identifier 3813 * will remain the same for the lifetime of the activity. 3814 * 3815 * @return Task identifier, an opaque integer. 3816 */ 3817 public int getTaskId() { 3818 try { 3819 return ActivityManagerNative.getDefault() 3820 .getTaskForActivity(mToken, false); 3821 } catch (RemoteException e) { 3822 return -1; 3823 } 3824 } 3825 3826 /** 3827 * Return whether this activity is the root of a task. The root is the 3828 * first activity in a task. 3829 * 3830 * @return True if this is the root activity, else false. 3831 */ 3832 public boolean isTaskRoot() { 3833 try { 3834 return ActivityManagerNative.getDefault() 3835 .getTaskForActivity(mToken, true) >= 0; 3836 } catch (RemoteException e) { 3837 return false; 3838 } 3839 } 3840 3841 /** 3842 * Move the task containing this activity to the back of the activity 3843 * stack. The activity's order within the task is unchanged. 3844 * 3845 * @param nonRoot If false then this only works if the activity is the root 3846 * of a task; if true it will work for any activity in 3847 * a task. 3848 * 3849 * @return If the task was moved (or it was already at the 3850 * back) true is returned, else false. 3851 */ 3852 public boolean moveTaskToBack(boolean nonRoot) { 3853 try { 3854 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3855 mToken, nonRoot); 3856 } catch (RemoteException e) { 3857 // Empty 3858 } 3859 return false; 3860 } 3861 3862 /** 3863 * Returns class name for this activity with the package prefix removed. 3864 * This is the default name used to read and write settings. 3865 * 3866 * @return The local class name. 3867 */ 3868 public String getLocalClassName() { 3869 final String pkg = getPackageName(); 3870 final String cls = mComponent.getClassName(); 3871 int packageLen = pkg.length(); 3872 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3873 || cls.charAt(packageLen) != '.') { 3874 return cls; 3875 } 3876 return cls.substring(packageLen+1); 3877 } 3878 3879 /** 3880 * Returns complete component name of this activity. 3881 * 3882 * @return Returns the complete component name for this activity 3883 */ 3884 public ComponentName getComponentName() 3885 { 3886 return mComponent; 3887 } 3888 3889 /** 3890 * Retrieve a {@link SharedPreferences} object for accessing preferences 3891 * that are private to this activity. This simply calls the underlying 3892 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3893 * class name as the preferences name. 3894 * 3895 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3896 * operation, {@link #MODE_WORLD_READABLE} and 3897 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3898 * 3899 * @return Returns the single SharedPreferences instance that can be used 3900 * to retrieve and modify the preference values. 3901 */ 3902 public SharedPreferences getPreferences(int mode) { 3903 return getSharedPreferences(getLocalClassName(), mode); 3904 } 3905 3906 private void ensureSearchManager() { 3907 if (mSearchManager != null) { 3908 return; 3909 } 3910 3911 mSearchManager = new SearchManager(this, null); 3912 } 3913 3914 @Override 3915 public Object getSystemService(String name) { 3916 if (getBaseContext() == null) { 3917 throw new IllegalStateException( 3918 "System services not available to Activities before onCreate()"); 3919 } 3920 3921 if (WINDOW_SERVICE.equals(name)) { 3922 return mWindowManager; 3923 } else if (SEARCH_SERVICE.equals(name)) { 3924 ensureSearchManager(); 3925 return mSearchManager; 3926 } 3927 return super.getSystemService(name); 3928 } 3929 3930 /** 3931 * Change the title associated with this activity. If this is a 3932 * top-level activity, the title for its window will change. If it 3933 * is an embedded activity, the parent can do whatever it wants 3934 * with it. 3935 */ 3936 public void setTitle(CharSequence title) { 3937 mTitle = title; 3938 onTitleChanged(title, mTitleColor); 3939 3940 if (mParent != null) { 3941 mParent.onChildTitleChanged(this, title); 3942 } 3943 } 3944 3945 /** 3946 * Change the title associated with this activity. If this is a 3947 * top-level activity, the title for its window will change. If it 3948 * is an embedded activity, the parent can do whatever it wants 3949 * with it. 3950 */ 3951 public void setTitle(int titleId) { 3952 setTitle(getText(titleId)); 3953 } 3954 3955 public void setTitleColor(int textColor) { 3956 mTitleColor = textColor; 3957 onTitleChanged(mTitle, textColor); 3958 } 3959 3960 public final CharSequence getTitle() { 3961 return mTitle; 3962 } 3963 3964 public final int getTitleColor() { 3965 return mTitleColor; 3966 } 3967 3968 protected void onTitleChanged(CharSequence title, int color) { 3969 if (mTitleReady) { 3970 final Window win = getWindow(); 3971 if (win != null) { 3972 win.setTitle(title); 3973 if (color != 0) { 3974 win.setTitleColor(color); 3975 } 3976 } 3977 } 3978 } 3979 3980 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 3981 } 3982 3983 /** 3984 * Sets the visibility of the progress bar in the title. 3985 * <p> 3986 * In order for the progress bar to be shown, the feature must be requested 3987 * via {@link #requestWindowFeature(int)}. 3988 * 3989 * @param visible Whether to show the progress bars in the title. 3990 */ 3991 public final void setProgressBarVisibility(boolean visible) { 3992 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 3993 Window.PROGRESS_VISIBILITY_OFF); 3994 } 3995 3996 /** 3997 * Sets the visibility of the indeterminate progress bar in the title. 3998 * <p> 3999 * In order for the progress bar to be shown, the feature must be requested 4000 * via {@link #requestWindowFeature(int)}. 4001 * 4002 * @param visible Whether to show the progress bars in the title. 4003 */ 4004 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4005 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4006 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4007 } 4008 4009 /** 4010 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4011 * is always indeterminate). 4012 * <p> 4013 * In order for the progress bar to be shown, the feature must be requested 4014 * via {@link #requestWindowFeature(int)}. 4015 * 4016 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4017 */ 4018 public final void setProgressBarIndeterminate(boolean indeterminate) { 4019 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4020 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4021 } 4022 4023 /** 4024 * Sets the progress for the progress bars in the title. 4025 * <p> 4026 * In order for the progress bar to be shown, the feature must be requested 4027 * via {@link #requestWindowFeature(int)}. 4028 * 4029 * @param progress The progress for the progress bar. Valid ranges are from 4030 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4031 * bar will be completely filled and will fade out. 4032 */ 4033 public final void setProgress(int progress) { 4034 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4035 } 4036 4037 /** 4038 * Sets the secondary progress for the progress bar in the title. This 4039 * progress is drawn between the primary progress (set via 4040 * {@link #setProgress(int)} and the background. It can be ideal for media 4041 * scenarios such as showing the buffering progress while the default 4042 * progress shows the play progress. 4043 * <p> 4044 * In order for the progress bar to be shown, the feature must be requested 4045 * via {@link #requestWindowFeature(int)}. 4046 * 4047 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4048 * 0 to 10000 (both inclusive). 4049 */ 4050 public final void setSecondaryProgress(int secondaryProgress) { 4051 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4052 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4053 } 4054 4055 /** 4056 * Suggests an audio stream whose volume should be changed by the hardware 4057 * volume controls. 4058 * <p> 4059 * The suggested audio stream will be tied to the window of this Activity. 4060 * If the Activity is switched, the stream set here is no longer the 4061 * suggested stream. The client does not need to save and restore the old 4062 * suggested stream value in onPause and onResume. 4063 * 4064 * @param streamType The type of the audio stream whose volume should be 4065 * changed by the hardware volume controls. It is not guaranteed that 4066 * the hardware volume controls will always change this stream's 4067 * volume (for example, if a call is in progress, its stream's volume 4068 * may be changed instead). To reset back to the default, use 4069 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4070 */ 4071 public final void setVolumeControlStream(int streamType) { 4072 getWindow().setVolumeControlStream(streamType); 4073 } 4074 4075 /** 4076 * Gets the suggested audio stream whose volume should be changed by the 4077 * harwdare volume controls. 4078 * 4079 * @return The suggested audio stream type whose volume should be changed by 4080 * the hardware volume controls. 4081 * @see #setVolumeControlStream(int) 4082 */ 4083 public final int getVolumeControlStream() { 4084 return getWindow().getVolumeControlStream(); 4085 } 4086 4087 /** 4088 * Runs the specified action on the UI thread. If the current thread is the UI 4089 * thread, then the action is executed immediately. If the current thread is 4090 * not the UI thread, the action is posted to the event queue of the UI thread. 4091 * 4092 * @param action the action to run on the UI thread 4093 */ 4094 public final void runOnUiThread(Runnable action) { 4095 if (Thread.currentThread() != mUiThread) { 4096 mHandler.post(action); 4097 } else { 4098 action.run(); 4099 } 4100 } 4101 4102 /** 4103 * Standard implementation of 4104 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4105 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4106 * This implementation does nothing and is for 4107 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4108 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4109 * 4110 * @see android.view.LayoutInflater#createView 4111 * @see android.view.Window#getLayoutInflater 4112 */ 4113 public View onCreateView(String name, Context context, AttributeSet attrs) { 4114 return null; 4115 } 4116 4117 /** 4118 * Standard implementation of 4119 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4120 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4121 * This implementation handles <fragment> tags to embed fragments inside 4122 * of the activity. 4123 * 4124 * @see android.view.LayoutInflater#createView 4125 * @see android.view.Window#getLayoutInflater 4126 */ 4127 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4128 if (!"fragment".equals(name)) { 4129 return onCreateView(name, context, attrs); 4130 } 4131 4132 String fname = attrs.getAttributeValue(null, "class"); 4133 TypedArray a = 4134 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4135 if (fname == null) { 4136 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4137 } 4138 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4139 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4140 a.recycle(); 4141 4142 int containerId = parent != null ? parent.getId() : 0; 4143 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4144 throw new IllegalArgumentException(attrs.getPositionDescription() 4145 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4146 } 4147 4148 // If we restored from a previous state, we may already have 4149 // instantiated this fragment from the state and should use 4150 // that instance instead of making a new one. 4151 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4152 if (fragment == null && tag != null) { 4153 fragment = mFragments.findFragmentByTag(tag); 4154 } 4155 if (fragment == null && containerId != View.NO_ID) { 4156 fragment = mFragments.findFragmentById(containerId); 4157 } 4158 4159 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4160 + Integer.toHexString(id) + " fname=" + fname 4161 + " existing=" + fragment); 4162 if (fragment == null) { 4163 fragment = Fragment.instantiate(this, fname); 4164 fragment.mFromLayout = true; 4165 fragment.mFragmentId = id != 0 ? id : containerId; 4166 fragment.mContainerId = containerId; 4167 fragment.mTag = tag; 4168 fragment.mInLayout = true; 4169 fragment.mImmediateActivity = this; 4170 fragment.mFragmentManager = mFragments; 4171 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4172 mFragments.addFragment(fragment, true); 4173 4174 } else if (fragment.mInLayout) { 4175 // A fragment already exists and it is not one we restored from 4176 // previous state. 4177 throw new IllegalArgumentException(attrs.getPositionDescription() 4178 + ": Duplicate id 0x" + Integer.toHexString(id) 4179 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4180 + " with another fragment for " + fname); 4181 } else { 4182 // This fragment was retained from a previous instance; get it 4183 // going now. 4184 fragment.mInLayout = true; 4185 fragment.mImmediateActivity = this; 4186 // If this fragment is newly instantiated (either right now, or 4187 // from last saved state), then give it the attributes to 4188 // initialize itself. 4189 if (!fragment.mRetaining) { 4190 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4191 } 4192 mFragments.moveToState(fragment); 4193 } 4194 4195 if (fragment.mView == null) { 4196 throw new IllegalStateException("Fragment " + fname 4197 + " did not create a view."); 4198 } 4199 if (id != 0) { 4200 fragment.mView.setId(id); 4201 } 4202 if (fragment.mView.getTag() == null) { 4203 fragment.mView.setTag(tag); 4204 } 4205 return fragment.mView; 4206 } 4207 4208 /** 4209 * Print the Activity's state into the given stream. This gets invoked if 4210 * you run "adb shell dumpsys activity <activity_component_name>". 4211 * 4212 * @param prefix Desired prefix to prepend at each line of output. 4213 * @param fd The raw file descriptor that the dump is being sent to. 4214 * @param writer The PrintWriter to which you should dump your state. This will be 4215 * closed for you after you return. 4216 * @param args additional arguments to the dump request. 4217 */ 4218 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4219 writer.print(prefix); writer.print("Local Activity "); 4220 writer.print(Integer.toHexString(System.identityHashCode(this))); 4221 writer.println(" State:"); 4222 String innerPrefix = prefix + " "; 4223 writer.print(innerPrefix); writer.print("mResumed="); 4224 writer.print(mResumed); writer.print(" mStopped="); 4225 writer.print(mStopped); writer.print(" mFinished="); 4226 writer.println(mFinished); 4227 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4228 writer.println(mLoadersStarted); 4229 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4230 writer.println(mChangingConfigurations); 4231 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4232 writer.println(mCurrentConfig); 4233 if (mLoaderManager != null) { 4234 writer.print(prefix); writer.print("Loader Manager "); 4235 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4236 writer.println(":"); 4237 mLoaderManager.dump(prefix + " ", fd, writer, args); 4238 } 4239 mFragments.dump(prefix, fd, writer, args); 4240 } 4241 4242 /** 4243 * Bit indicating that this activity is "immersive" and should not be 4244 * interrupted by notifications if possible. 4245 * 4246 * This value is initially set by the manifest property 4247 * <code>android:immersive</code> but may be changed at runtime by 4248 * {@link #setImmersive}. 4249 * 4250 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4251 * @hide 4252 */ 4253 public boolean isImmersive() { 4254 try { 4255 return ActivityManagerNative.getDefault().isImmersive(mToken); 4256 } catch (RemoteException e) { 4257 return false; 4258 } 4259 } 4260 4261 /** 4262 * Adjust the current immersive mode setting. 4263 * 4264 * Note that changing this value will have no effect on the activity's 4265 * {@link android.content.pm.ActivityInfo} structure; that is, if 4266 * <code>android:immersive</code> is set to <code>true</code> 4267 * in the application's manifest entry for this activity, the {@link 4268 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4269 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4270 * FLAG_IMMERSIVE} bit set. 4271 * 4272 * @see #isImmersive 4273 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4274 * @hide 4275 */ 4276 public void setImmersive(boolean i) { 4277 try { 4278 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4279 } catch (RemoteException e) { 4280 // pass 4281 } 4282 } 4283 4284 /** 4285 * Start an action mode. 4286 * 4287 * @param callback Callback that will manage lifecycle events for this context mode 4288 * @return The ContextMode that was started, or null if it was canceled 4289 * 4290 * @see ActionMode 4291 */ 4292 public ActionMode startActionMode(ActionMode.Callback callback) { 4293 return mWindow.getDecorView().startActionMode(callback); 4294 } 4295 4296 /** 4297 * Give the Activity a chance to control the UI for an action mode requested 4298 * by the system. 4299 * 4300 * <p>Note: If you are looking for a notification callback that an action mode 4301 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4302 * 4303 * @param callback The callback that should control the new action mode 4304 * @return The new action mode, or <code>null</code> if the activity does not want to 4305 * provide special handling for this action mode. (It will be handled by the system.) 4306 */ 4307 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4308 initActionBar(); 4309 if (mActionBar != null) { 4310 return mActionBar.startActionMode(callback); 4311 } 4312 return null; 4313 } 4314 4315 /** 4316 * Notifies the Activity that an action mode has been started. 4317 * Activity subclasses overriding this method should call the superclass implementation. 4318 * 4319 * @param mode The new action mode. 4320 */ 4321 public void onActionModeStarted(ActionMode mode) { 4322 } 4323 4324 /** 4325 * Notifies the activity that an action mode has finished. 4326 * Activity subclasses overriding this method should call the superclass implementation. 4327 * 4328 * @param mode The action mode that just finished. 4329 */ 4330 public void onActionModeFinished(ActionMode mode) { 4331 } 4332 4333 // ------------------ Internal API ------------------ 4334 4335 final void setParent(Activity parent) { 4336 mParent = parent; 4337 } 4338 4339 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4340 Application application, Intent intent, ActivityInfo info, CharSequence title, 4341 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4342 Configuration config) { 4343 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4344 lastNonConfigurationInstances, config); 4345 } 4346 4347 final void attach(Context context, ActivityThread aThread, 4348 Instrumentation instr, IBinder token, int ident, 4349 Application application, Intent intent, ActivityInfo info, 4350 CharSequence title, Activity parent, String id, 4351 NonConfigurationInstances lastNonConfigurationInstances, 4352 Configuration config) { 4353 attachBaseContext(context); 4354 4355 mFragments.attachActivity(this); 4356 4357 mWindow = PolicyManager.makeNewWindow(this); 4358 mWindow.setCallback(this); 4359 mWindow.getLayoutInflater().setPrivateFactory(this); 4360 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4361 mWindow.setSoftInputMode(info.softInputMode); 4362 } 4363 mUiThread = Thread.currentThread(); 4364 4365 mMainThread = aThread; 4366 mInstrumentation = instr; 4367 mToken = token; 4368 mIdent = ident; 4369 mApplication = application; 4370 mIntent = intent; 4371 mComponent = intent.getComponent(); 4372 mActivityInfo = info; 4373 mTitle = title; 4374 mParent = parent; 4375 mEmbeddedID = id; 4376 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4377 4378 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4379 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4380 if (mParent != null) { 4381 mWindow.setContainer(mParent.getWindow()); 4382 } 4383 mWindowManager = mWindow.getWindowManager(); 4384 mCurrentConfig = config; 4385 } 4386 4387 final IBinder getActivityToken() { 4388 return mParent != null ? mParent.getActivityToken() : mToken; 4389 } 4390 4391 final void performCreate(Bundle icicle) { 4392 onCreate(icicle); 4393 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4394 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4395 mFragments.dispatchActivityCreated(); 4396 } 4397 4398 final void performStart() { 4399 mFragments.noteStateNotSaved(); 4400 mCalled = false; 4401 mFragments.execPendingActions(); 4402 mInstrumentation.callActivityOnStart(this); 4403 if (!mCalled) { 4404 throw new SuperNotCalledException( 4405 "Activity " + mComponent.toShortString() + 4406 " did not call through to super.onStart()"); 4407 } 4408 mFragments.dispatchStart(); 4409 if (mAllLoaderManagers != null) { 4410 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4411 mAllLoaderManagers.valueAt(i).finishRetain(); 4412 } 4413 } 4414 } 4415 4416 final void performRestart() { 4417 mFragments.noteStateNotSaved(); 4418 4419 synchronized (mManagedCursors) { 4420 final int N = mManagedCursors.size(); 4421 for (int i=0; i<N; i++) { 4422 ManagedCursor mc = mManagedCursors.get(i); 4423 if (mc.mReleased || mc.mUpdated) { 4424 if (!mc.mCursor.requery()) { 4425 throw new IllegalStateException( 4426 "trying to requery an already closed cursor"); 4427 } 4428 mc.mReleased = false; 4429 mc.mUpdated = false; 4430 } 4431 } 4432 } 4433 4434 if (mStopped) { 4435 mStopped = false; 4436 mCalled = false; 4437 if (mToken != null && mParent == null) { 4438 WindowManagerImpl.getDefault().setStoppedState(mToken, false); 4439 } 4440 mInstrumentation.callActivityOnRestart(this); 4441 if (!mCalled) { 4442 throw new SuperNotCalledException( 4443 "Activity " + mComponent.toShortString() + 4444 " did not call through to super.onRestart()"); 4445 } 4446 performStart(); 4447 } 4448 } 4449 4450 final void performResume() { 4451 performRestart(); 4452 4453 mFragments.execPendingActions(); 4454 4455 mLastNonConfigurationInstances = null; 4456 4457 mCalled = false; 4458 // mResumed is set by the instrumentation 4459 mInstrumentation.callActivityOnResume(this); 4460 if (!mCalled) { 4461 throw new SuperNotCalledException( 4462 "Activity " + mComponent.toShortString() + 4463 " did not call through to super.onResume()"); 4464 } 4465 4466 // Now really resume, and install the current status bar and menu. 4467 mCalled = false; 4468 4469 mFragments.dispatchResume(); 4470 mFragments.execPendingActions(); 4471 4472 onPostResume(); 4473 if (!mCalled) { 4474 throw new SuperNotCalledException( 4475 "Activity " + mComponent.toShortString() + 4476 " did not call through to super.onPostResume()"); 4477 } 4478 } 4479 4480 final void performPause() { 4481 mFragments.dispatchPause(); 4482 mCalled = false; 4483 onPause(); 4484 mResumed = false; 4485 if (!mCalled && getApplicationInfo().targetSdkVersion 4486 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4487 throw new SuperNotCalledException( 4488 "Activity " + mComponent.toShortString() + 4489 " did not call through to super.onPause()"); 4490 } 4491 mResumed = false; 4492 } 4493 4494 final void performUserLeaving() { 4495 onUserInteraction(); 4496 onUserLeaveHint(); 4497 } 4498 4499 final void performStop() { 4500 if (mLoadersStarted) { 4501 mLoadersStarted = false; 4502 if (mLoaderManager != null) { 4503 if (!mChangingConfigurations) { 4504 mLoaderManager.doStop(); 4505 } else { 4506 mLoaderManager.doRetain(); 4507 } 4508 } 4509 } 4510 4511 if (!mStopped) { 4512 if (mWindow != null) { 4513 mWindow.closeAllPanels(); 4514 } 4515 4516 if (mToken != null && mParent == null) { 4517 WindowManagerImpl.getDefault().setStoppedState(mToken, true); 4518 } 4519 4520 mFragments.dispatchStop(); 4521 4522 mCalled = false; 4523 mInstrumentation.callActivityOnStop(this); 4524 if (!mCalled) { 4525 throw new SuperNotCalledException( 4526 "Activity " + mComponent.toShortString() + 4527 " did not call through to super.onStop()"); 4528 } 4529 4530 synchronized (mManagedCursors) { 4531 final int N = mManagedCursors.size(); 4532 for (int i=0; i<N; i++) { 4533 ManagedCursor mc = mManagedCursors.get(i); 4534 if (!mc.mReleased) { 4535 mc.mCursor.deactivate(); 4536 mc.mReleased = true; 4537 } 4538 } 4539 } 4540 4541 mStopped = true; 4542 } 4543 mResumed = false; 4544 4545 // Check for Activity leaks, if enabled. 4546 StrictMode.conditionallyCheckInstanceCounts(); 4547 } 4548 4549 final void performDestroy() { 4550 mWindow.destroy(); 4551 mFragments.dispatchDestroy(); 4552 onDestroy(); 4553 if (mLoaderManager != null) { 4554 mLoaderManager.doDestroy(); 4555 } 4556 } 4557 4558 /** 4559 * @hide 4560 */ 4561 public final boolean isResumed() { 4562 return mResumed; 4563 } 4564 4565 void dispatchActivityResult(String who, int requestCode, 4566 int resultCode, Intent data) { 4567 if (false) Log.v( 4568 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4569 + ", resCode=" + resultCode + ", data=" + data); 4570 mFragments.noteStateNotSaved(); 4571 if (who == null) { 4572 onActivityResult(requestCode, resultCode, data); 4573 } else { 4574 Fragment frag = mFragments.findFragmentByWho(who); 4575 if (frag != null) { 4576 frag.onActivityResult(requestCode, resultCode, data); 4577 } 4578 } 4579 } 4580} 4581