Activity.java revision 9ecebbfbf768fd63e9a6c9a09c86d81c7737ee2d
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.ComponentCallbacks2; 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.content.res.Resources.Theme; 36import android.database.Cursor; 37import android.graphics.Bitmap; 38import android.graphics.Canvas; 39import android.graphics.drawable.Drawable; 40import android.media.AudioManager; 41import android.net.Uri; 42import android.os.Build; 43import android.os.Bundle; 44import android.os.Handler; 45import android.os.IBinder; 46import android.os.Looper; 47import android.os.Parcelable; 48import android.os.RemoteException; 49import android.os.StrictMode; 50import android.text.Selection; 51import android.text.SpannableStringBuilder; 52import android.text.TextUtils; 53import android.text.method.TextKeyListener; 54import android.util.AttributeSet; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.SparseArray; 58import android.util.TypedValue; 59import android.view.ActionMode; 60import android.view.ContextMenu; 61import android.view.ContextMenu.ContextMenuInfo; 62import android.view.ContextThemeWrapper; 63import android.view.KeyEvent; 64import android.view.LayoutInflater; 65import android.view.Menu; 66import android.view.MenuInflater; 67import android.view.MenuItem; 68import android.view.MotionEvent; 69import android.view.View; 70import android.view.WindowManagerImpl; 71import android.view.View.OnCreateContextMenuListener; 72import android.view.ViewGroup; 73import android.view.ViewGroup.LayoutParams; 74import android.view.ViewManager; 75import android.view.Window; 76import android.view.WindowManager; 77import android.view.accessibility.AccessibilityEvent; 78import android.widget.AdapterView; 79 80import java.io.FileDescriptor; 81import java.io.PrintWriter; 82import java.util.ArrayList; 83import java.util.HashMap; 84 85/** 86 * An activity is a single, focused thing that the user can do. Almost all 87 * activities interact with the user, so the Activity class takes care of 88 * creating a window for you in which you can place your UI with 89 * {@link #setContentView}. While activities are often presented to the user 90 * as full-screen windows, they can also be used in other ways: as floating 91 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 92 * or embedded inside of another activity (using {@link ActivityGroup}). 93 * 94 * There are two methods almost all subclasses of Activity will implement: 95 * 96 * <ul> 97 * <li> {@link #onCreate} is where you initialize your activity. Most 98 * importantly, here you will usually call {@link #setContentView(int)} 99 * with a layout resource defining your UI, and using {@link #findViewById} 100 * to retrieve the widgets in that UI that you need to interact with 101 * programmatically. 102 * 103 * <li> {@link #onPause} is where you deal with the user leaving your 104 * activity. Most importantly, any changes made by the user should at this 105 * point be committed (usually to the 106 * {@link android.content.ContentProvider} holding the data). 107 * </ul> 108 * 109 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 110 * activity classes must have a corresponding 111 * {@link android.R.styleable#AndroidManifestActivity <activity>} 112 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 113 * 114 * <p>The Activity class is an important part of an application's overall lifecycle, 115 * and the way activities are launched and put together is a fundamental 116 * part of the platform's application model. For a detailed perspective on the structure of an 117 * Android application and how activities behave, please read the 118 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 119 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 120 * documents.</p> 121 * 122 * <p>You can also find a detailed discussion about how to create activities in the 123 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 124 * document.</p> 125 * 126 * <p>Topics covered here: 127 * <ol> 128 * <li><a href="#Fragments">Fragments</a> 129 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 130 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 131 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 132 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 133 * <li><a href="#Permissions">Permissions</a> 134 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 135 * </ol> 136 * 137 * <a name="Fragments"></a> 138 * <h3>Fragments</h3> 139 * 140 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 141 * implementations can make use of the {@link Fragment} class to better 142 * modularize their code, build more sophisticated user interfaces for larger 143 * screens, and help scale their application between small and large screens. 144 * 145 * <a name="ActivityLifecycle"></a> 146 * <h3>Activity Lifecycle</h3> 147 * 148 * <p>Activities in the system are managed as an <em>activity stack</em>. 149 * When a new activity is started, it is placed on the top of the stack 150 * and becomes the running activity -- the previous activity always remains 151 * below it in the stack, and will not come to the foreground again until 152 * the new activity exits.</p> 153 * 154 * <p>An activity has essentially four states:</p> 155 * <ul> 156 * <li> If an activity in the foreground of the screen (at the top of 157 * the stack), 158 * it is <em>active</em> or <em>running</em>. </li> 159 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 160 * or transparent activity has focus on top of your activity), it 161 * is <em>paused</em>. A paused activity is completely alive (it 162 * maintains all state and member information and remains attached to 163 * the window manager), but can be killed by the system in extreme 164 * low memory situations. 165 * <li>If an activity is completely obscured by another activity, 166 * it is <em>stopped</em>. It still retains all state and member information, 167 * however, it is no longer visible to the user so its window is hidden 168 * and it will often be killed by the system when memory is needed 169 * elsewhere.</li> 170 * <li>If an activity is paused or stopped, the system can drop the activity 171 * from memory by either asking it to finish, or simply killing its 172 * process. When it is displayed again to the user, it must be 173 * completely restarted and restored to its previous state.</li> 174 * </ul> 175 * 176 * <p>The following diagram shows the important state paths of an Activity. 177 * The square rectangles represent callback methods you can implement to 178 * perform operations when the Activity moves between states. The colored 179 * ovals are major states the Activity can be in.</p> 180 * 181 * <p><img src="../../../images/activity_lifecycle.png" 182 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 183 * 184 * <p>There are three key loops you may be interested in monitoring within your 185 * activity: 186 * 187 * <ul> 188 * <li>The <b>entire lifetime</b> of an activity happens between the first call 189 * to {@link android.app.Activity#onCreate} through to a single final call 190 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 191 * of "global" state in onCreate(), and release all remaining resources in 192 * onDestroy(). For example, if it has a thread running in the background 193 * to download data from the network, it may create that thread in onCreate() 194 * and then stop the thread in onDestroy(). 195 * 196 * <li>The <b>visible lifetime</b> of an activity happens between a call to 197 * {@link android.app.Activity#onStart} until a corresponding call to 198 * {@link android.app.Activity#onStop}. During this time the user can see the 199 * activity on-screen, though it may not be in the foreground and interacting 200 * with the user. Between these two methods you can maintain resources that 201 * are needed to show the activity to the user. For example, you can register 202 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 203 * that impact your UI, and unregister it in onStop() when the user an no 204 * longer see what you are displaying. The onStart() and onStop() methods 205 * can be called multiple times, as the activity becomes visible and hidden 206 * to the user. 207 * 208 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 209 * {@link android.app.Activity#onResume} until a corresponding call to 210 * {@link android.app.Activity#onPause}. During this time the activity is 211 * in front of all other activities and interacting with the user. An activity 212 * can frequently go between the resumed and paused states -- for example when 213 * the device goes to sleep, when an activity result is delivered, when a new 214 * intent is delivered -- so the code in these methods should be fairly 215 * lightweight. 216 * </ul> 217 * 218 * <p>The entire lifecycle of an activity is defined by the following 219 * Activity methods. All of these are hooks that you can override 220 * to do appropriate work when the activity changes state. All 221 * activities will implement {@link android.app.Activity#onCreate} 222 * to do their initial setup; many will also implement 223 * {@link android.app.Activity#onPause} to commit changes to data and 224 * otherwise prepare to stop interacting with the user. You should always 225 * call up to your superclass when implementing these methods.</p> 226 * 227 * </p> 228 * <pre class="prettyprint"> 229 * public class Activity extends ApplicationContext { 230 * protected void onCreate(Bundle savedInstanceState); 231 * 232 * protected void onStart(); 233 * 234 * protected void onRestart(); 235 * 236 * protected void onResume(); 237 * 238 * protected void onPause(); 239 * 240 * protected void onStop(); 241 * 242 * protected void onDestroy(); 243 * } 244 * </pre> 245 * 246 * <p>In general the movement through an activity's lifecycle looks like 247 * this:</p> 248 * 249 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 250 * <colgroup align="left" span="3" /> 251 * <colgroup align="left" /> 252 * <colgroup align="center" /> 253 * <colgroup align="center" /> 254 * 255 * <thead> 256 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 257 * </thead> 258 * 259 * <tbody> 260 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 261 * <td>Called when the activity is first created. 262 * This is where you should do all of your normal static set up: 263 * create views, bind data to lists, etc. This method also 264 * provides you with a Bundle containing the activity's previously 265 * frozen state, if there was one. 266 * <p>Always followed by <code>onStart()</code>.</td> 267 * <td align="center">No</td> 268 * <td align="center"><code>onStart()</code></td> 269 * </tr> 270 * 271 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 272 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 273 * <td>Called after your activity has been stopped, prior to it being 274 * started again. 275 * <p>Always followed by <code>onStart()</code></td> 276 * <td align="center">No</td> 277 * <td align="center"><code>onStart()</code></td> 278 * </tr> 279 * 280 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 281 * <td>Called when the activity is becoming visible to the user. 282 * <p>Followed by <code>onResume()</code> if the activity comes 283 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 284 * <td align="center">No</td> 285 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 286 * </tr> 287 * 288 * <tr><td rowspan="2" style="border-left: none;"> </td> 289 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 290 * <td>Called when the activity will start 291 * interacting with the user. At this point your activity is at 292 * the top of the activity stack, with user input going to it. 293 * <p>Always followed by <code>onPause()</code>.</td> 294 * <td align="center">No</td> 295 * <td align="center"><code>onPause()</code></td> 296 * </tr> 297 * 298 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 299 * <td>Called when the system is about to start resuming a previous 300 * activity. This is typically used to commit unsaved changes to 301 * persistent data, stop animations and other things that may be consuming 302 * CPU, etc. Implementations of this method must be very quick because 303 * the next activity will not be resumed until this method returns. 304 * <p>Followed by either <code>onResume()</code> if the activity 305 * returns back to the front, or <code>onStop()</code> if it becomes 306 * invisible to the user.</td> 307 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 308 * <td align="center"><code>onResume()</code> or<br> 309 * <code>onStop()</code></td> 310 * </tr> 311 * 312 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 313 * <td>Called when the activity is no longer visible to the user, because 314 * another activity has been resumed and is covering this one. This 315 * may happen either because a new activity is being started, an existing 316 * one is being brought in front of this one, or this one is being 317 * destroyed. 318 * <p>Followed by either <code>onRestart()</code> if 319 * this activity is coming back to interact with the user, or 320 * <code>onDestroy()</code> if this activity is going away.</td> 321 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 322 * <td align="center"><code>onRestart()</code> or<br> 323 * <code>onDestroy()</code></td> 324 * </tr> 325 * 326 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 327 * <td>The final call you receive before your 328 * activity is destroyed. This can happen either because the 329 * activity is finishing (someone called {@link Activity#finish} on 330 * it, or because the system is temporarily destroying this 331 * instance of the activity to save space. You can distinguish 332 * between these two scenarios with the {@link 333 * Activity#isFinishing} method.</td> 334 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 335 * <td align="center"><em>nothing</em></td> 336 * </tr> 337 * </tbody> 338 * </table> 339 * 340 * <p>Note the "Killable" column in the above table -- for those methods that 341 * are marked as being killable, after that method returns the process hosting the 342 * activity may killed by the system <em>at any time</em> without another line 343 * of its code being executed. Because of this, you should use the 344 * {@link #onPause} method to write any persistent data (such as user edits) 345 * to storage. In addition, the method 346 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 347 * in such a background state, allowing you to save away any dynamic instance 348 * state in your activity into the given Bundle, to be later received in 349 * {@link #onCreate} if the activity needs to be re-created. 350 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 351 * section for more information on how the lifecycle of a process is tied 352 * to the activities it is hosting. Note that it is important to save 353 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 354 * because the latter is not part of the lifecycle callbacks, so will not 355 * be called in every situation as described in its documentation.</p> 356 * 357 * <p class="note">Be aware that these semantics will change slightly between 358 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 359 * vs. those targeting prior platforms. Starting with Honeycomb, an application 360 * is not in the killable state until its {@link #onStop} has returned. This 361 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 362 * safely called after {@link #onPause()} and allows and application to safely 363 * wait until {@link #onStop()} to save persistent state.</p> 364 * 365 * <p>For those methods that are not marked as being killable, the activity's 366 * process will not be killed by the system starting from the time the method 367 * is called and continuing after it returns. Thus an activity is in the killable 368 * state, for example, between after <code>onPause()</code> to the start of 369 * <code>onResume()</code>.</p> 370 * 371 * <a name="ConfigurationChanges"></a> 372 * <h3>Configuration Changes</h3> 373 * 374 * <p>If the configuration of the device (as defined by the 375 * {@link Configuration Resources.Configuration} class) changes, 376 * then anything displaying a user interface will need to update to match that 377 * configuration. Because Activity is the primary mechanism for interacting 378 * with the user, it includes special support for handling configuration 379 * changes.</p> 380 * 381 * <p>Unless you specify otherwise, a configuration change (such as a change 382 * in screen orientation, language, input devices, etc) will cause your 383 * current activity to be <em>destroyed</em>, going through the normal activity 384 * lifecycle process of {@link #onPause}, 385 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 386 * had been in the foreground or visible to the user, once {@link #onDestroy} is 387 * called in that instance then a new instance of the activity will be 388 * created, with whatever savedInstanceState the previous instance had generated 389 * from {@link #onSaveInstanceState}.</p> 390 * 391 * <p>This is done because any application resource, 392 * including layout files, can change based on any configuration value. Thus 393 * the only safe way to handle a configuration change is to re-retrieve all 394 * resources, including layouts, drawables, and strings. Because activities 395 * must already know how to save their state and re-create themselves from 396 * that state, this is a convenient way to have an activity restart itself 397 * with a new configuration.</p> 398 * 399 * <p>In some special cases, you may want to bypass restarting of your 400 * activity based on one or more types of configuration changes. This is 401 * done with the {@link android.R.attr#configChanges android:configChanges} 402 * attribute in its manifest. For any types of configuration changes you say 403 * that you handle there, you will receive a call to your current activity's 404 * {@link #onConfigurationChanged} method instead of being restarted. If 405 * a configuration change involves any that you do not handle, however, the 406 * activity will still be restarted and {@link #onConfigurationChanged} 407 * will not be called.</p> 408 * 409 * <a name="StartingActivities"></a> 410 * <h3>Starting Activities and Getting Results</h3> 411 * 412 * <p>The {@link android.app.Activity#startActivity} 413 * method is used to start a 414 * new activity, which will be placed at the top of the activity stack. It 415 * takes a single argument, an {@link android.content.Intent Intent}, 416 * which describes the activity 417 * to be executed.</p> 418 * 419 * <p>Sometimes you want to get a result back from an activity when it 420 * ends. For example, you may start an activity that lets the user pick 421 * a person in a list of contacts; when it ends, it returns the person 422 * that was selected. To do this, you call the 423 * {@link android.app.Activity#startActivityForResult(Intent, int)} 424 * version with a second integer parameter identifying the call. The result 425 * will come back through your {@link android.app.Activity#onActivityResult} 426 * method.</p> 427 * 428 * <p>When an activity exits, it can call 429 * {@link android.app.Activity#setResult(int)} 430 * to return data back to its parent. It must always supply a result code, 431 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 432 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 433 * return back an Intent containing any additional data it wants. All of this 434 * information appears back on the 435 * parent's <code>Activity.onActivityResult()</code>, along with the integer 436 * identifier it originally supplied.</p> 437 * 438 * <p>If a child activity fails for any reason (such as crashing), the parent 439 * activity will receive a result with the code RESULT_CANCELED.</p> 440 * 441 * <pre class="prettyprint"> 442 * public class MyActivity extends Activity { 443 * ... 444 * 445 * static final int PICK_CONTACT_REQUEST = 0; 446 * 447 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 448 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 449 * // When the user center presses, let them pick a contact. 450 * startActivityForResult( 451 * new Intent(Intent.ACTION_PICK, 452 * new Uri("content://contacts")), 453 * PICK_CONTACT_REQUEST); 454 * return true; 455 * } 456 * return false; 457 * } 458 * 459 * protected void onActivityResult(int requestCode, int resultCode, 460 * Intent data) { 461 * if (requestCode == PICK_CONTACT_REQUEST) { 462 * if (resultCode == RESULT_OK) { 463 * // A contact was picked. Here we will just display it 464 * // to the user. 465 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 466 * } 467 * } 468 * } 469 * } 470 * </pre> 471 * 472 * <a name="SavingPersistentState"></a> 473 * <h3>Saving Persistent State</h3> 474 * 475 * <p>There are generally two kinds of persistent state than an activity 476 * will deal with: shared document-like data (typically stored in a SQLite 477 * database using a {@linkplain android.content.ContentProvider content provider}) 478 * and internal state such as user preferences.</p> 479 * 480 * <p>For content provider data, we suggest that activities use a 481 * "edit in place" user model. That is, any edits a user makes are effectively 482 * made immediately without requiring an additional confirmation step. 483 * Supporting this model is generally a simple matter of following two rules:</p> 484 * 485 * <ul> 486 * <li> <p>When creating a new document, the backing database entry or file for 487 * it is created immediately. For example, if the user chooses to write 488 * a new e-mail, a new entry for that e-mail is created as soon as they 489 * start entering data, so that if they go to any other activity after 490 * that point this e-mail will now appear in the list of drafts.</p> 491 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 492 * commit to the backing content provider or file any changes the user 493 * has made. This ensures that those changes will be seen by any other 494 * activity that is about to run. You will probably want to commit 495 * your data even more aggressively at key times during your 496 * activity's lifecycle: for example before starting a new 497 * activity, before finishing your own activity, when the user 498 * switches between input fields, etc.</p> 499 * </ul> 500 * 501 * <p>This model is designed to prevent data loss when a user is navigating 502 * between activities, and allows the system to safely kill an activity (because 503 * system resources are needed somewhere else) at any time after it has been 504 * paused. Note this implies 505 * that the user pressing BACK from your activity does <em>not</em> 506 * mean "cancel" -- it means to leave the activity with its current contents 507 * saved away. Canceling edits in an activity must be provided through 508 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 509 * 510 * <p>See the {@linkplain android.content.ContentProvider content package} for 511 * more information about content providers. These are a key aspect of how 512 * different activities invoke and propagate data between themselves.</p> 513 * 514 * <p>The Activity class also provides an API for managing internal persistent state 515 * associated with an activity. This can be used, for example, to remember 516 * the user's preferred initial display in a calendar (day view or week view) 517 * or the user's default home page in a web browser.</p> 518 * 519 * <p>Activity persistent state is managed 520 * with the method {@link #getPreferences}, 521 * allowing you to retrieve and 522 * modify a set of name/value pairs associated with the activity. To use 523 * preferences that are shared across multiple application components 524 * (activities, receivers, services, providers), you can use the underlying 525 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 526 * to retrieve a preferences 527 * object stored under a specific name. 528 * (Note that it is not possible to share settings data across application 529 * packages -- for that you will need a content provider.)</p> 530 * 531 * <p>Here is an excerpt from a calendar activity that stores the user's 532 * preferred view mode in its persistent settings:</p> 533 * 534 * <pre class="prettyprint"> 535 * public class CalendarActivity extends Activity { 536 * ... 537 * 538 * static final int DAY_VIEW_MODE = 0; 539 * static final int WEEK_VIEW_MODE = 1; 540 * 541 * private SharedPreferences mPrefs; 542 * private int mCurViewMode; 543 * 544 * protected void onCreate(Bundle savedInstanceState) { 545 * super.onCreate(savedInstanceState); 546 * 547 * SharedPreferences mPrefs = getSharedPreferences(); 548 * mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE); 549 * } 550 * 551 * protected void onPause() { 552 * super.onPause(); 553 * 554 * SharedPreferences.Editor ed = mPrefs.edit(); 555 * ed.putInt("view_mode", mCurViewMode); 556 * ed.commit(); 557 * } 558 * } 559 * </pre> 560 * 561 * <a name="Permissions"></a> 562 * <h3>Permissions</h3> 563 * 564 * <p>The ability to start a particular Activity can be enforced when it is 565 * declared in its 566 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 567 * tag. By doing so, other applications will need to declare a corresponding 568 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 569 * element in their own manifest to be able to start that activity. 570 * 571 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 572 * document for more information on permissions and security in general. 573 * 574 * <a name="ProcessLifecycle"></a> 575 * <h3>Process Lifecycle</h3> 576 * 577 * <p>The Android system attempts to keep application process around for as 578 * long as possible, but eventually will need to remove old processes when 579 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 580 * Lifecycle</a>, the decision about which process to remove is intimately 581 * tied to the state of the user's interaction with it. In general, there 582 * are four states a process can be in based on the activities running in it, 583 * listed here in order of importance. The system will kill less important 584 * processes (the last ones) before it resorts to killing more important 585 * processes (the first ones). 586 * 587 * <ol> 588 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 589 * that the user is currently interacting with) is considered the most important. 590 * Its process will only be killed as a last resort, if it uses more memory 591 * than is available on the device. Generally at this point the device has 592 * reached a memory paging state, so this is required in order to keep the user 593 * interface responsive. 594 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 595 * but not in the foreground, such as one sitting behind a foreground dialog) 596 * is considered extremely important and will not be killed unless that is 597 * required to keep the foreground activity running. 598 * <li> <p>A <b>background activity</b> (an activity that is not visible to 599 * the user and has been paused) is no longer critical, so the system may 600 * safely kill its process to reclaim memory for other foreground or 601 * visible processes. If its process needs to be killed, when the user navigates 602 * back to the activity (making it visible on the screen again), its 603 * {@link #onCreate} method will be called with the savedInstanceState it had previously 604 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 605 * state as the user last left it. 606 * <li> <p>An <b>empty process</b> is one hosting no activities or other 607 * application components (such as {@link Service} or 608 * {@link android.content.BroadcastReceiver} classes). These are killed very 609 * quickly by the system as memory becomes low. For this reason, any 610 * background operation you do outside of an activity must be executed in the 611 * context of an activity BroadcastReceiver or Service to ensure that the system 612 * knows it needs to keep your process around. 613 * </ol> 614 * 615 * <p>Sometimes an Activity may need to do a long-running operation that exists 616 * independently of the activity lifecycle itself. An example may be a camera 617 * application that allows you to upload a picture to a web site. The upload 618 * may take a long time, and the application should allow the user to leave 619 * the application will it is executing. To accomplish this, your Activity 620 * should start a {@link Service} in which the upload takes place. This allows 621 * the system to properly prioritize your process (considering it to be more 622 * important than other non-visible applications) for the duration of the 623 * upload, independent of whether the original activity is paused, stopped, 624 * or finished. 625 */ 626public class Activity extends ContextThemeWrapper 627 implements LayoutInflater.Factory2, 628 Window.Callback, KeyEvent.Callback, 629 OnCreateContextMenuListener, ComponentCallbacks2 { 630 private static final String TAG = "Activity"; 631 632 /** Standard activity result: operation canceled. */ 633 public static final int RESULT_CANCELED = 0; 634 /** Standard activity result: operation succeeded. */ 635 public static final int RESULT_OK = -1; 636 /** Start of user-defined activity results. */ 637 public static final int RESULT_FIRST_USER = 1; 638 639 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 640 private static final String FRAGMENTS_TAG = "android:fragments"; 641 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 642 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 643 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 644 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 645 646 private static class ManagedDialog { 647 Dialog mDialog; 648 Bundle mArgs; 649 } 650 private SparseArray<ManagedDialog> mManagedDialogs; 651 652 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 653 private Instrumentation mInstrumentation; 654 private IBinder mToken; 655 private int mIdent; 656 /*package*/ String mEmbeddedID; 657 private Application mApplication; 658 /*package*/ Intent mIntent; 659 private ComponentName mComponent; 660 /*package*/ ActivityInfo mActivityInfo; 661 /*package*/ ActivityThread mMainThread; 662 Activity mParent; 663 boolean mCalled; 664 boolean mCheckedForLoaderManager; 665 boolean mLoadersStarted; 666 /*package*/ boolean mResumed; 667 private boolean mStopped; 668 boolean mFinished; 669 boolean mStartedActivity; 670 /** true if the activity is going through a transient pause */ 671 /*package*/ boolean mTemporaryPause = false; 672 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 673 /*package*/ boolean mChangingConfigurations = false; 674 /*package*/ int mConfigChangeFlags; 675 /*package*/ Configuration mCurrentConfig; 676 private SearchManager mSearchManager; 677 private MenuInflater mMenuInflater; 678 679 static final class NonConfigurationInstances { 680 Object activity; 681 HashMap<String, Object> children; 682 ArrayList<Fragment> fragments; 683 SparseArray<LoaderManagerImpl> loaders; 684 } 685 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 686 687 private Window mWindow; 688 689 private WindowManager mWindowManager; 690 /*package*/ View mDecor = null; 691 /*package*/ boolean mWindowAdded = false; 692 /*package*/ boolean mVisibleFromServer = false; 693 /*package*/ boolean mVisibleFromClient = true; 694 /*package*/ ActionBarImpl mActionBar = null; 695 696 private CharSequence mTitle; 697 private int mTitleColor = 0; 698 699 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 700 701 SparseArray<LoaderManagerImpl> mAllLoaderManagers; 702 LoaderManagerImpl mLoaderManager; 703 704 private static final class ManagedCursor { 705 ManagedCursor(Cursor cursor) { 706 mCursor = cursor; 707 mReleased = false; 708 mUpdated = false; 709 } 710 711 private final Cursor mCursor; 712 private boolean mReleased; 713 private boolean mUpdated; 714 } 715 private final ArrayList<ManagedCursor> mManagedCursors = 716 new ArrayList<ManagedCursor>(); 717 718 // protected by synchronized (this) 719 int mResultCode = RESULT_CANCELED; 720 Intent mResultData = null; 721 722 private boolean mTitleReady = false; 723 724 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 725 private SpannableStringBuilder mDefaultKeySsb = null; 726 727 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 728 729 private final Object mInstanceTracker = StrictMode.trackActivity(this); 730 731 private Thread mUiThread; 732 final Handler mHandler = new Handler(); 733 734 /** Return the intent that started this activity. */ 735 public Intent getIntent() { 736 return mIntent; 737 } 738 739 /** 740 * Change the intent returned by {@link #getIntent}. This holds a 741 * reference to the given intent; it does not copy it. Often used in 742 * conjunction with {@link #onNewIntent}. 743 * 744 * @param newIntent The new Intent object to return from getIntent 745 * 746 * @see #getIntent 747 * @see #onNewIntent 748 */ 749 public void setIntent(Intent newIntent) { 750 mIntent = newIntent; 751 } 752 753 /** Return the application that owns this activity. */ 754 public final Application getApplication() { 755 return mApplication; 756 } 757 758 /** Is this activity embedded inside of another activity? */ 759 public final boolean isChild() { 760 return mParent != null; 761 } 762 763 /** Return the parent activity if this view is an embedded child. */ 764 public final Activity getParent() { 765 return mParent; 766 } 767 768 /** Retrieve the window manager for showing custom windows. */ 769 public WindowManager getWindowManager() { 770 return mWindowManager; 771 } 772 773 /** 774 * Retrieve the current {@link android.view.Window} for the activity. 775 * This can be used to directly access parts of the Window API that 776 * are not available through Activity/Screen. 777 * 778 * @return Window The current window, or null if the activity is not 779 * visual. 780 */ 781 public Window getWindow() { 782 return mWindow; 783 } 784 785 /** 786 * Return the LoaderManager for this fragment, creating it if needed. 787 */ 788 public LoaderManager getLoaderManager() { 789 if (mLoaderManager != null) { 790 return mLoaderManager; 791 } 792 mCheckedForLoaderManager = true; 793 mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); 794 return mLoaderManager; 795 } 796 797 LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { 798 if (mAllLoaderManagers == null) { 799 mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); 800 } 801 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 802 if (lm == null) { 803 if (create) { 804 lm = new LoaderManagerImpl(this, started); 805 mAllLoaderManagers.put(index, lm); 806 } 807 } else { 808 lm.updateActivity(this); 809 } 810 return lm; 811 } 812 813 /** 814 * Calls {@link android.view.Window#getCurrentFocus} on the 815 * Window of this Activity to return the currently focused view. 816 * 817 * @return View The current View with focus or null. 818 * 819 * @see #getWindow 820 * @see android.view.Window#getCurrentFocus 821 */ 822 public View getCurrentFocus() { 823 return mWindow != null ? mWindow.getCurrentFocus() : null; 824 } 825 826 /** 827 * Called when the activity is starting. This is where most initialization 828 * should go: calling {@link #setContentView(int)} to inflate the 829 * activity's UI, using {@link #findViewById} to programmatically interact 830 * with widgets in the UI, calling 831 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 832 * cursors for data being displayed, etc. 833 * 834 * <p>You can call {@link #finish} from within this function, in 835 * which case onDestroy() will be immediately called without any of the rest 836 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 837 * {@link #onPause}, etc) executing. 838 * 839 * <p><em>Derived classes must call through to the super class's 840 * implementation of this method. If they do not, an exception will be 841 * thrown.</em></p> 842 * 843 * @param savedInstanceState If the activity is being re-initialized after 844 * previously being shut down then this Bundle contains the data it most 845 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 846 * 847 * @see #onStart 848 * @see #onSaveInstanceState 849 * @see #onRestoreInstanceState 850 * @see #onPostCreate 851 */ 852 protected void onCreate(Bundle savedInstanceState) { 853 if (mLastNonConfigurationInstances != null) { 854 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 855 } 856 if (savedInstanceState != null) { 857 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 858 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 859 ? mLastNonConfigurationInstances.fragments : null); 860 } 861 mFragments.dispatchCreate(); 862 getApplication().dispatchActivityCreated(this, savedInstanceState); 863 mCalled = true; 864 } 865 866 /** 867 * The hook for {@link ActivityThread} to restore the state of this activity. 868 * 869 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 870 * {@link #restoreManagedDialogs(android.os.Bundle)}. 871 * 872 * @param savedInstanceState contains the saved state 873 */ 874 final void performRestoreInstanceState(Bundle savedInstanceState) { 875 onRestoreInstanceState(savedInstanceState); 876 restoreManagedDialogs(savedInstanceState); 877 } 878 879 /** 880 * This method is called after {@link #onStart} when the activity is 881 * being re-initialized from a previously saved state, given here in 882 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 883 * to restore their state, but it is sometimes convenient to do it here 884 * after all of the initialization has been done or to allow subclasses to 885 * decide whether to use your default implementation. The default 886 * implementation of this method performs a restore of any view state that 887 * had previously been frozen by {@link #onSaveInstanceState}. 888 * 889 * <p>This method is called between {@link #onStart} and 890 * {@link #onPostCreate}. 891 * 892 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 893 * 894 * @see #onCreate 895 * @see #onPostCreate 896 * @see #onResume 897 * @see #onSaveInstanceState 898 */ 899 protected void onRestoreInstanceState(Bundle savedInstanceState) { 900 if (mWindow != null) { 901 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 902 if (windowState != null) { 903 mWindow.restoreHierarchyState(windowState); 904 } 905 } 906 } 907 908 /** 909 * Restore the state of any saved managed dialogs. 910 * 911 * @param savedInstanceState The bundle to restore from. 912 */ 913 private void restoreManagedDialogs(Bundle savedInstanceState) { 914 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 915 if (b == null) { 916 return; 917 } 918 919 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 920 final int numDialogs = ids.length; 921 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 922 for (int i = 0; i < numDialogs; i++) { 923 final Integer dialogId = ids[i]; 924 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 925 if (dialogState != null) { 926 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 927 // so tell createDialog() not to do it, otherwise we get an exception 928 final ManagedDialog md = new ManagedDialog(); 929 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 930 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 931 if (md.mDialog != null) { 932 mManagedDialogs.put(dialogId, md); 933 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 934 md.mDialog.onRestoreInstanceState(dialogState); 935 } 936 } 937 } 938 } 939 940 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 941 final Dialog dialog = onCreateDialog(dialogId, args); 942 if (dialog == null) { 943 return null; 944 } 945 dialog.dispatchOnCreate(state); 946 return dialog; 947 } 948 949 private static String savedDialogKeyFor(int key) { 950 return SAVED_DIALOG_KEY_PREFIX + key; 951 } 952 953 private static String savedDialogArgsKeyFor(int key) { 954 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 955 } 956 957 /** 958 * Called when activity start-up is complete (after {@link #onStart} 959 * and {@link #onRestoreInstanceState} have been called). Applications will 960 * generally not implement this method; it is intended for system 961 * classes to do final initialization after application code has run. 962 * 963 * <p><em>Derived classes must call through to the super class's 964 * implementation of this method. If they do not, an exception will be 965 * thrown.</em></p> 966 * 967 * @param savedInstanceState If the activity is being re-initialized after 968 * previously being shut down then this Bundle contains the data it most 969 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 970 * @see #onCreate 971 */ 972 protected void onPostCreate(Bundle savedInstanceState) { 973 if (!isChild()) { 974 mTitleReady = true; 975 onTitleChanged(getTitle(), getTitleColor()); 976 } 977 mCalled = true; 978 } 979 980 /** 981 * Called after {@link #onCreate} — or after {@link #onRestart} when 982 * the activity had been stopped, but is now again being displayed to the 983 * user. It will be followed by {@link #onResume}. 984 * 985 * <p><em>Derived classes must call through to the super class's 986 * implementation of this method. If they do not, an exception will be 987 * thrown.</em></p> 988 * 989 * @see #onCreate 990 * @see #onStop 991 * @see #onResume 992 */ 993 protected void onStart() { 994 mCalled = true; 995 996 if (!mLoadersStarted) { 997 mLoadersStarted = true; 998 if (mLoaderManager != null) { 999 mLoaderManager.doStart(); 1000 } else if (!mCheckedForLoaderManager) { 1001 mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); 1002 } 1003 mCheckedForLoaderManager = true; 1004 } 1005 1006 getApplication().dispatchActivityStarted(this); 1007 } 1008 1009 /** 1010 * Called after {@link #onStop} when the current activity is being 1011 * re-displayed to the user (the user has navigated back to it). It will 1012 * be followed by {@link #onStart} and then {@link #onResume}. 1013 * 1014 * <p>For activities that are using raw {@link Cursor} objects (instead of 1015 * creating them through 1016 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1017 * this is usually the place 1018 * where the cursor should be requeried (because you had deactivated it in 1019 * {@link #onStop}. 1020 * 1021 * <p><em>Derived classes must call through to the super class's 1022 * implementation of this method. If they do not, an exception will be 1023 * thrown.</em></p> 1024 * 1025 * @see #onStop 1026 * @see #onStart 1027 * @see #onResume 1028 */ 1029 protected void onRestart() { 1030 mCalled = true; 1031 } 1032 1033 /** 1034 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1035 * {@link #onPause}, for your activity to start interacting with the user. 1036 * This is a good place to begin animations, open exclusive-access devices 1037 * (such as the camera), etc. 1038 * 1039 * <p>Keep in mind that onResume is not the best indicator that your activity 1040 * is visible to the user; a system window such as the keyguard may be in 1041 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1042 * activity is visible to the user (for example, to resume a game). 1043 * 1044 * <p><em>Derived classes must call through to the super class's 1045 * implementation of this method. If they do not, an exception will be 1046 * thrown.</em></p> 1047 * 1048 * @see #onRestoreInstanceState 1049 * @see #onRestart 1050 * @see #onPostResume 1051 * @see #onPause 1052 */ 1053 protected void onResume() { 1054 getApplication().dispatchActivityResumed(this); 1055 mCalled = true; 1056 } 1057 1058 /** 1059 * Called when activity resume is complete (after {@link #onResume} has 1060 * been called). Applications will generally not implement this method; 1061 * it is intended for system classes to do final setup after application 1062 * resume code has run. 1063 * 1064 * <p><em>Derived classes must call through to the super class's 1065 * implementation of this method. If they do not, an exception will be 1066 * thrown.</em></p> 1067 * 1068 * @see #onResume 1069 */ 1070 protected void onPostResume() { 1071 final Window win = getWindow(); 1072 if (win != null) win.makeActive(); 1073 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1074 mCalled = true; 1075 } 1076 1077 /** 1078 * This is called for activities that set launchMode to "singleTop" in 1079 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1080 * flag when calling {@link #startActivity}. In either case, when the 1081 * activity is re-launched while at the top of the activity stack instead 1082 * of a new instance of the activity being started, onNewIntent() will be 1083 * called on the existing instance with the Intent that was used to 1084 * re-launch it. 1085 * 1086 * <p>An activity will always be paused before receiving a new intent, so 1087 * you can count on {@link #onResume} being called after this method. 1088 * 1089 * <p>Note that {@link #getIntent} still returns the original Intent. You 1090 * can use {@link #setIntent} to update it to this new Intent. 1091 * 1092 * @param intent The new intent that was started for the activity. 1093 * 1094 * @see #getIntent 1095 * @see #setIntent 1096 * @see #onResume 1097 */ 1098 protected void onNewIntent(Intent intent) { 1099 } 1100 1101 /** 1102 * The hook for {@link ActivityThread} to save the state of this activity. 1103 * 1104 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1105 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1106 * 1107 * @param outState The bundle to save the state to. 1108 */ 1109 final void performSaveInstanceState(Bundle outState) { 1110 onSaveInstanceState(outState); 1111 saveManagedDialogs(outState); 1112 } 1113 1114 /** 1115 * Called to retrieve per-instance state from an activity before being killed 1116 * so that the state can be restored in {@link #onCreate} or 1117 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1118 * will be passed to both). 1119 * 1120 * <p>This method is called before an activity may be killed so that when it 1121 * comes back some time in the future it can restore its state. For example, 1122 * if activity B is launched in front of activity A, and at some point activity 1123 * A is killed to reclaim resources, activity A will have a chance to save the 1124 * current state of its user interface via this method so that when the user 1125 * returns to activity A, the state of the user interface can be restored 1126 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1127 * 1128 * <p>Do not confuse this method with activity lifecycle callbacks such as 1129 * {@link #onPause}, which is always called when an activity is being placed 1130 * in the background or on its way to destruction, or {@link #onStop} which 1131 * is called before destruction. One example of when {@link #onPause} and 1132 * {@link #onStop} is called and not this method is when a user navigates back 1133 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1134 * on B because that particular instance will never be restored, so the 1135 * system avoids calling it. An example when {@link #onPause} is called and 1136 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1137 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1138 * killed during the lifetime of B since the state of the user interface of 1139 * A will stay intact. 1140 * 1141 * <p>The default implementation takes care of most of the UI per-instance 1142 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1143 * view in the hierarchy that has an id, and by saving the id of the currently 1144 * focused view (all of which is restored by the default implementation of 1145 * {@link #onRestoreInstanceState}). If you override this method to save additional 1146 * information not captured by each individual view, you will likely want to 1147 * call through to the default implementation, otherwise be prepared to save 1148 * all of the state of each view yourself. 1149 * 1150 * <p>If called, this method will occur before {@link #onStop}. There are 1151 * no guarantees about whether it will occur before or after {@link #onPause}. 1152 * 1153 * @param outState Bundle in which to place your saved state. 1154 * 1155 * @see #onCreate 1156 * @see #onRestoreInstanceState 1157 * @see #onPause 1158 */ 1159 protected void onSaveInstanceState(Bundle outState) { 1160 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1161 Parcelable p = mFragments.saveAllState(); 1162 if (p != null) { 1163 outState.putParcelable(FRAGMENTS_TAG, p); 1164 } 1165 getApplication().dispatchActivitySaveInstanceState(this, outState); 1166 } 1167 1168 /** 1169 * Save the state of any managed dialogs. 1170 * 1171 * @param outState place to store the saved state. 1172 */ 1173 private void saveManagedDialogs(Bundle outState) { 1174 if (mManagedDialogs == null) { 1175 return; 1176 } 1177 1178 final int numDialogs = mManagedDialogs.size(); 1179 if (numDialogs == 0) { 1180 return; 1181 } 1182 1183 Bundle dialogState = new Bundle(); 1184 1185 int[] ids = new int[mManagedDialogs.size()]; 1186 1187 // save each dialog's bundle, gather the ids 1188 for (int i = 0; i < numDialogs; i++) { 1189 final int key = mManagedDialogs.keyAt(i); 1190 ids[i] = key; 1191 final ManagedDialog md = mManagedDialogs.valueAt(i); 1192 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1193 if (md.mArgs != null) { 1194 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1195 } 1196 } 1197 1198 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1199 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1200 } 1201 1202 1203 /** 1204 * Called as part of the activity lifecycle when an activity is going into 1205 * the background, but has not (yet) been killed. The counterpart to 1206 * {@link #onResume}. 1207 * 1208 * <p>When activity B is launched in front of activity A, this callback will 1209 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1210 * so be sure to not do anything lengthy here. 1211 * 1212 * <p>This callback is mostly used for saving any persistent state the 1213 * activity is editing, to present a "edit in place" model to the user and 1214 * making sure nothing is lost if there are not enough resources to start 1215 * the new activity without first killing this one. This is also a good 1216 * place to do things like stop animations and other things that consume a 1217 * noticeable mount of CPU in order to make the switch to the next activity 1218 * as fast as possible, or to close resources that are exclusive access 1219 * such as the camera. 1220 * 1221 * <p>In situations where the system needs more memory it may kill paused 1222 * processes to reclaim resources. Because of this, you should be sure 1223 * that all of your state is saved by the time you return from 1224 * this function. In general {@link #onSaveInstanceState} is used to save 1225 * per-instance state in the activity and this method is used to store 1226 * global persistent data (in content providers, files, etc.) 1227 * 1228 * <p>After receiving this call you will usually receive a following call 1229 * to {@link #onStop} (after the next activity has been resumed and 1230 * displayed), however in some cases there will be a direct call back to 1231 * {@link #onResume} without going through the stopped state. 1232 * 1233 * <p><em>Derived classes must call through to the super class's 1234 * implementation of this method. If they do not, an exception will be 1235 * thrown.</em></p> 1236 * 1237 * @see #onResume 1238 * @see #onSaveInstanceState 1239 * @see #onStop 1240 */ 1241 protected void onPause() { 1242 getApplication().dispatchActivityPaused(this); 1243 mCalled = true; 1244 } 1245 1246 /** 1247 * Called as part of the activity lifecycle when an activity is about to go 1248 * into the background as the result of user choice. For example, when the 1249 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1250 * when an incoming phone call causes the in-call Activity to be automatically 1251 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1252 * the activity being interrupted. In cases when it is invoked, this method 1253 * is called right before the activity's {@link #onPause} callback. 1254 * 1255 * <p>This callback and {@link #onUserInteraction} are intended to help 1256 * activities manage status bar notifications intelligently; specifically, 1257 * for helping activities determine the proper time to cancel a notfication. 1258 * 1259 * @see #onUserInteraction() 1260 */ 1261 protected void onUserLeaveHint() { 1262 } 1263 1264 /** 1265 * Generate a new thumbnail for this activity. This method is called before 1266 * pausing the activity, and should draw into <var>outBitmap</var> the 1267 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1268 * can use the given <var>canvas</var>, which is configured to draw into the 1269 * bitmap, for rendering if desired. 1270 * 1271 * <p>The default implementation returns fails and does not draw a thumbnail; 1272 * this will result in the platform creating its own thumbnail if needed. 1273 * 1274 * @param outBitmap The bitmap to contain the thumbnail. 1275 * @param canvas Can be used to render into the bitmap. 1276 * 1277 * @return Return true if you have drawn into the bitmap; otherwise after 1278 * you return it will be filled with a default thumbnail. 1279 * 1280 * @see #onCreateDescription 1281 * @see #onSaveInstanceState 1282 * @see #onPause 1283 */ 1284 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1285 return false; 1286 } 1287 1288 /** 1289 * Generate a new description for this activity. This method is called 1290 * before pausing the activity and can, if desired, return some textual 1291 * description of its current state to be displayed to the user. 1292 * 1293 * <p>The default implementation returns null, which will cause you to 1294 * inherit the description from the previous activity. If all activities 1295 * return null, generally the label of the top activity will be used as the 1296 * description. 1297 * 1298 * @return A description of what the user is doing. It should be short and 1299 * sweet (only a few words). 1300 * 1301 * @see #onCreateThumbnail 1302 * @see #onSaveInstanceState 1303 * @see #onPause 1304 */ 1305 public CharSequence onCreateDescription() { 1306 return null; 1307 } 1308 1309 /** 1310 * Called when you are no longer visible to the user. You will next 1311 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1312 * depending on later user activity. 1313 * 1314 * <p>Note that this method may never be called, in low memory situations 1315 * where the system does not have enough memory to keep your activity's 1316 * process running after its {@link #onPause} method is called. 1317 * 1318 * <p><em>Derived classes must call through to the super class's 1319 * implementation of this method. If they do not, an exception will be 1320 * thrown.</em></p> 1321 * 1322 * @see #onRestart 1323 * @see #onResume 1324 * @see #onSaveInstanceState 1325 * @see #onDestroy 1326 */ 1327 protected void onStop() { 1328 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1329 getApplication().dispatchActivityStopped(this); 1330 mCalled = true; 1331 } 1332 1333 /** 1334 * Perform any final cleanup before an activity is destroyed. This can 1335 * happen either because the activity is finishing (someone called 1336 * {@link #finish} on it, or because the system is temporarily destroying 1337 * this instance of the activity to save space. You can distinguish 1338 * between these two scenarios with the {@link #isFinishing} method. 1339 * 1340 * <p><em>Note: do not count on this method being called as a place for 1341 * saving data! For example, if an activity is editing data in a content 1342 * provider, those edits should be committed in either {@link #onPause} or 1343 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1344 * free resources like threads that are associated with an activity, so 1345 * that a destroyed activity does not leave such things around while the 1346 * rest of its application is still running. There are situations where 1347 * the system will simply kill the activity's hosting process without 1348 * calling this method (or any others) in it, so it should not be used to 1349 * do things that are intended to remain around after the process goes 1350 * away. 1351 * 1352 * <p><em>Derived classes must call through to the super class's 1353 * implementation of this method. If they do not, an exception will be 1354 * thrown.</em></p> 1355 * 1356 * @see #onPause 1357 * @see #onStop 1358 * @see #finish 1359 * @see #isFinishing 1360 */ 1361 protected void onDestroy() { 1362 mCalled = true; 1363 1364 // dismiss any dialogs we are managing. 1365 if (mManagedDialogs != null) { 1366 final int numDialogs = mManagedDialogs.size(); 1367 for (int i = 0; i < numDialogs; i++) { 1368 final ManagedDialog md = mManagedDialogs.valueAt(i); 1369 if (md.mDialog.isShowing()) { 1370 md.mDialog.dismiss(); 1371 } 1372 } 1373 mManagedDialogs = null; 1374 } 1375 1376 // close any cursors we are managing. 1377 synchronized (mManagedCursors) { 1378 int numCursors = mManagedCursors.size(); 1379 for (int i = 0; i < numCursors; i++) { 1380 ManagedCursor c = mManagedCursors.get(i); 1381 if (c != null) { 1382 c.mCursor.close(); 1383 } 1384 } 1385 mManagedCursors.clear(); 1386 } 1387 1388 // Close any open search dialog 1389 if (mSearchManager != null) { 1390 mSearchManager.stopSearch(); 1391 } 1392 1393 getApplication().dispatchActivityDestroyed(this); 1394 } 1395 1396 /** 1397 * Called by the system when the device configuration changes while your 1398 * activity is running. Note that this will <em>only</em> be called if 1399 * you have selected configurations you would like to handle with the 1400 * {@link android.R.attr#configChanges} attribute in your manifest. If 1401 * any configuration change occurs that is not selected to be reported 1402 * by that attribute, then instead of reporting it the system will stop 1403 * and restart the activity (to have it launched with the new 1404 * configuration). 1405 * 1406 * <p>At the time that this function has been called, your Resources 1407 * object will have been updated to return resource values matching the 1408 * new configuration. 1409 * 1410 * @param newConfig The new device configuration. 1411 */ 1412 public void onConfigurationChanged(Configuration newConfig) { 1413 mCalled = true; 1414 1415 mFragments.dispatchConfigurationChanged(newConfig); 1416 1417 if (mWindow != null) { 1418 // Pass the configuration changed event to the window 1419 mWindow.onConfigurationChanged(newConfig); 1420 } 1421 1422 if (mActionBar != null) { 1423 // Do this last; the action bar will need to access 1424 // view changes from above. 1425 mActionBar.onConfigurationChanged(newConfig); 1426 } 1427 } 1428 1429 /** 1430 * If this activity is being destroyed because it can not handle a 1431 * configuration parameter being changed (and thus its 1432 * {@link #onConfigurationChanged(Configuration)} method is 1433 * <em>not</em> being called), then you can use this method to discover 1434 * the set of changes that have occurred while in the process of being 1435 * destroyed. Note that there is no guarantee that these will be 1436 * accurate (other changes could have happened at any time), so you should 1437 * only use this as an optimization hint. 1438 * 1439 * @return Returns a bit field of the configuration parameters that are 1440 * changing, as defined by the {@link android.content.res.Configuration} 1441 * class. 1442 */ 1443 public int getChangingConfigurations() { 1444 return mConfigChangeFlags; 1445 } 1446 1447 /** 1448 * Retrieve the non-configuration instance data that was previously 1449 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1450 * be available from the initial {@link #onCreate} and 1451 * {@link #onStart} calls to the new instance, allowing you to extract 1452 * any useful dynamic state from the previous instance. 1453 * 1454 * <p>Note that the data you retrieve here should <em>only</em> be used 1455 * as an optimization for handling configuration changes. You should always 1456 * be able to handle getting a null pointer back, and an activity must 1457 * still be able to restore itself to its previous state (through the 1458 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1459 * function returns null. 1460 * 1461 * @return Returns the object previously returned by 1462 * {@link #onRetainNonConfigurationInstance()}. 1463 * 1464 * @deprecated Use the new {@link Fragment} API 1465 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1466 * available on older platforms through the Android compatibility package. 1467 */ 1468 @Deprecated 1469 public Object getLastNonConfigurationInstance() { 1470 return mLastNonConfigurationInstances != null 1471 ? mLastNonConfigurationInstances.activity : null; 1472 } 1473 1474 /** 1475 * Called by the system, as part of destroying an 1476 * activity due to a configuration change, when it is known that a new 1477 * instance will immediately be created for the new configuration. You 1478 * can return any object you like here, including the activity instance 1479 * itself, which can later be retrieved by calling 1480 * {@link #getLastNonConfigurationInstance()} in the new activity 1481 * instance. 1482 * 1483 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1484 * or later, consider instead using a {@link Fragment} with 1485 * {@link Fragment#setRetainInstance(boolean) 1486 * Fragment.setRetainInstance(boolean}.</em> 1487 * 1488 * <p>This function is called purely as an optimization, and you must 1489 * not rely on it being called. When it is called, a number of guarantees 1490 * will be made to help optimize configuration switching: 1491 * <ul> 1492 * <li> The function will be called between {@link #onStop} and 1493 * {@link #onDestroy}. 1494 * <li> A new instance of the activity will <em>always</em> be immediately 1495 * created after this one's {@link #onDestroy()} is called. In particular, 1496 * <em>no</em> messages will be dispatched during this time (when the returned 1497 * object does not have an activity to be associated with). 1498 * <li> The object you return here will <em>always</em> be available from 1499 * the {@link #getLastNonConfigurationInstance()} method of the following 1500 * activity instance as described there. 1501 * </ul> 1502 * 1503 * <p>These guarantees are designed so that an activity can use this API 1504 * to propagate extensive state from the old to new activity instance, from 1505 * loaded bitmaps, to network connections, to evenly actively running 1506 * threads. Note that you should <em>not</em> propagate any data that 1507 * may change based on the configuration, including any data loaded from 1508 * resources such as strings, layouts, or drawables. 1509 * 1510 * <p>The guarantee of no message handling during the switch to the next 1511 * activity simplifies use with active objects. For example if your retained 1512 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1513 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1514 * not be called from the call here until you execute the next instance's 1515 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1516 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1517 * running in a separate thread.) 1518 * 1519 * @return Return any Object holding the desired state to propagate to the 1520 * next activity instance. 1521 * 1522 * @deprecated Use the new {@link Fragment} API 1523 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1524 * available on older platforms through the Android compatibility package. 1525 */ 1526 public Object onRetainNonConfigurationInstance() { 1527 return null; 1528 } 1529 1530 /** 1531 * Retrieve the non-configuration instance data that was previously 1532 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1533 * be available from the initial {@link #onCreate} and 1534 * {@link #onStart} calls to the new instance, allowing you to extract 1535 * any useful dynamic state from the previous instance. 1536 * 1537 * <p>Note that the data you retrieve here should <em>only</em> be used 1538 * as an optimization for handling configuration changes. You should always 1539 * be able to handle getting a null pointer back, and an activity must 1540 * still be able to restore itself to its previous state (through the 1541 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1542 * function returns null. 1543 * 1544 * @return Returns the object previously returned by 1545 * {@link #onRetainNonConfigurationChildInstances()} 1546 */ 1547 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1548 return mLastNonConfigurationInstances != null 1549 ? mLastNonConfigurationInstances.children : null; 1550 } 1551 1552 /** 1553 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1554 * it should return either a mapping from child activity id strings to arbitrary objects, 1555 * or null. This method is intended to be used by Activity framework subclasses that control a 1556 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1557 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1558 */ 1559 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1560 return null; 1561 } 1562 1563 NonConfigurationInstances retainNonConfigurationInstances() { 1564 Object activity = onRetainNonConfigurationInstance(); 1565 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1566 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1567 boolean retainLoaders = false; 1568 if (mAllLoaderManagers != null) { 1569 // prune out any loader managers that were already stopped and so 1570 // have nothing useful to retain. 1571 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 1572 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 1573 if (lm.mRetaining) { 1574 retainLoaders = true; 1575 } else { 1576 lm.doDestroy(); 1577 mAllLoaderManagers.removeAt(i); 1578 } 1579 } 1580 } 1581 if (activity == null && children == null && fragments == null && !retainLoaders) { 1582 return null; 1583 } 1584 1585 NonConfigurationInstances nci = new NonConfigurationInstances(); 1586 nci.activity = activity; 1587 nci.children = children; 1588 nci.fragments = fragments; 1589 nci.loaders = mAllLoaderManagers; 1590 return nci; 1591 } 1592 1593 public void onLowMemory() { 1594 mCalled = true; 1595 mFragments.dispatchLowMemory(); 1596 } 1597 1598 public void onTrimMemory(int level) { 1599 mCalled = true; 1600 mFragments.dispatchTrimMemory(level); 1601 } 1602 1603 /** 1604 * Return the FragmentManager for interacting with fragments associated 1605 * with this activity. 1606 */ 1607 public FragmentManager getFragmentManager() { 1608 return mFragments; 1609 } 1610 1611 void invalidateFragmentIndex(int index) { 1612 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1613 if (mAllLoaderManagers != null) { 1614 LoaderManagerImpl lm = mAllLoaderManagers.get(index); 1615 if (lm != null && !lm.mRetaining) { 1616 lm.doDestroy(); 1617 mAllLoaderManagers.remove(index); 1618 } 1619 } 1620 } 1621 1622 /** 1623 * Called when a Fragment is being attached to this activity, immediately 1624 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1625 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1626 */ 1627 public void onAttachFragment(Fragment fragment) { 1628 } 1629 1630 /** 1631 * Wrapper around 1632 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1633 * that gives the resulting {@link Cursor} to call 1634 * {@link #startManagingCursor} so that the activity will manage its 1635 * lifecycle for you. 1636 * 1637 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1638 * or later, consider instead using {@link LoaderManager} instead, available 1639 * via {@link #getLoaderManager()}.</em> 1640 * 1641 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1642 * this method, because the activity will do that for you at the appropriate time. However, if 1643 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1644 * not</em> automatically close the cursor and, in that case, you must call 1645 * {@link Cursor#close()}.</p> 1646 * 1647 * @param uri The URI of the content provider to query. 1648 * @param projection List of columns to return. 1649 * @param selection SQL WHERE clause. 1650 * @param sortOrder SQL ORDER BY clause. 1651 * 1652 * @return The Cursor that was returned by query(). 1653 * 1654 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1655 * @see #startManagingCursor 1656 * @hide 1657 * 1658 * @deprecated Use {@link CursorLoader} instead. 1659 */ 1660 @Deprecated 1661 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1662 String sortOrder) { 1663 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1664 if (c != null) { 1665 startManagingCursor(c); 1666 } 1667 return c; 1668 } 1669 1670 /** 1671 * Wrapper around 1672 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1673 * that gives the resulting {@link Cursor} to call 1674 * {@link #startManagingCursor} so that the activity will manage its 1675 * lifecycle for you. 1676 * 1677 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1678 * or later, consider instead using {@link LoaderManager} instead, available 1679 * via {@link #getLoaderManager()}.</em> 1680 * 1681 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1682 * this method, because the activity will do that for you at the appropriate time. However, if 1683 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1684 * not</em> automatically close the cursor and, in that case, you must call 1685 * {@link Cursor#close()}.</p> 1686 * 1687 * @param uri The URI of the content provider to query. 1688 * @param projection List of columns to return. 1689 * @param selection SQL WHERE clause. 1690 * @param selectionArgs The arguments to selection, if any ?s are pesent 1691 * @param sortOrder SQL ORDER BY clause. 1692 * 1693 * @return The Cursor that was returned by query(). 1694 * 1695 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1696 * @see #startManagingCursor 1697 * 1698 * @deprecated Use {@link CursorLoader} instead. 1699 */ 1700 @Deprecated 1701 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1702 String[] selectionArgs, String sortOrder) { 1703 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1704 if (c != null) { 1705 startManagingCursor(c); 1706 } 1707 return c; 1708 } 1709 1710 /** 1711 * This method allows the activity to take care of managing the given 1712 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1713 * That is, when the activity is stopped it will automatically call 1714 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1715 * it will call {@link Cursor#requery} for you. When the activity is 1716 * destroyed, all managed Cursors will be closed automatically. 1717 * 1718 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1719 * or later, consider instead using {@link LoaderManager} instead, available 1720 * via {@link #getLoaderManager()}.</em> 1721 * 1722 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1723 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1724 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 1725 * <em>will not</em> automatically close the cursor and, in that case, you must call 1726 * {@link Cursor#close()}.</p> 1727 * 1728 * @param c The Cursor to be managed. 1729 * 1730 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1731 * @see #stopManagingCursor 1732 * 1733 * @deprecated Use the new {@link android.content.CursorLoader} class with 1734 * {@link LoaderManager} instead; this is also 1735 * available on older platforms through the Android compatibility package. 1736 */ 1737 @Deprecated 1738 public void startManagingCursor(Cursor c) { 1739 synchronized (mManagedCursors) { 1740 mManagedCursors.add(new ManagedCursor(c)); 1741 } 1742 } 1743 1744 /** 1745 * Given a Cursor that was previously given to 1746 * {@link #startManagingCursor}, stop the activity's management of that 1747 * cursor. 1748 * 1749 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 1750 * the system <em>will not</em> automatically close the cursor and you must call 1751 * {@link Cursor#close()}.</p> 1752 * 1753 * @param c The Cursor that was being managed. 1754 * 1755 * @see #startManagingCursor 1756 * 1757 * @deprecated Use the new {@link android.content.CursorLoader} class with 1758 * {@link LoaderManager} instead; this is also 1759 * available on older platforms through the Android compatibility package. 1760 */ 1761 @Deprecated 1762 public void stopManagingCursor(Cursor c) { 1763 synchronized (mManagedCursors) { 1764 final int N = mManagedCursors.size(); 1765 for (int i=0; i<N; i++) { 1766 ManagedCursor mc = mManagedCursors.get(i); 1767 if (mc.mCursor == c) { 1768 mManagedCursors.remove(i); 1769 break; 1770 } 1771 } 1772 } 1773 } 1774 1775 /** 1776 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1777 * this is a no-op. 1778 * @hide 1779 */ 1780 @Deprecated 1781 public void setPersistent(boolean isPersistent) { 1782 } 1783 1784 /** 1785 * Finds a view that was identified by the id attribute from the XML that 1786 * was processed in {@link #onCreate}. 1787 * 1788 * @return The view if found or null otherwise. 1789 */ 1790 public View findViewById(int id) { 1791 return getWindow().findViewById(id); 1792 } 1793 1794 /** 1795 * Retrieve a reference to this activity's ActionBar. 1796 * 1797 * @return The Activity's ActionBar, or null if it does not have one. 1798 */ 1799 public ActionBar getActionBar() { 1800 initActionBar(); 1801 return mActionBar; 1802 } 1803 1804 /** 1805 * Creates a new ActionBar, locates the inflated ActionBarView, 1806 * initializes the ActionBar with the view, and sets mActionBar. 1807 */ 1808 private void initActionBar() { 1809 Window window = getWindow(); 1810 1811 // Initializing the window decor can change window feature flags. 1812 // Make sure that we have the correct set before performing the test below. 1813 window.getDecorView(); 1814 1815 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1816 return; 1817 } 1818 1819 mActionBar = new ActionBarImpl(this); 1820 } 1821 1822 /** 1823 * Set the activity content from a layout resource. The resource will be 1824 * inflated, adding all top-level views to the activity. 1825 * 1826 * @param layoutResID Resource ID to be inflated. 1827 * 1828 * @see #setContentView(android.view.View) 1829 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1830 */ 1831 public void setContentView(int layoutResID) { 1832 getWindow().setContentView(layoutResID); 1833 initActionBar(); 1834 } 1835 1836 /** 1837 * Set the activity content to an explicit view. This view is placed 1838 * directly into the activity's view hierarchy. It can itself be a complex 1839 * view hierarchy. When calling this method, the layout parameters of the 1840 * specified view are ignored. Both the width and the height of the view are 1841 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1842 * your own layout parameters, invoke 1843 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1844 * instead. 1845 * 1846 * @param view The desired content to display. 1847 * 1848 * @see #setContentView(int) 1849 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1850 */ 1851 public void setContentView(View view) { 1852 getWindow().setContentView(view); 1853 initActionBar(); 1854 } 1855 1856 /** 1857 * Set the activity content to an explicit view. This view is placed 1858 * directly into the activity's view hierarchy. It can itself be a complex 1859 * view hierarchy. 1860 * 1861 * @param view The desired content to display. 1862 * @param params Layout parameters for the view. 1863 * 1864 * @see #setContentView(android.view.View) 1865 * @see #setContentView(int) 1866 */ 1867 public void setContentView(View view, ViewGroup.LayoutParams params) { 1868 getWindow().setContentView(view, params); 1869 initActionBar(); 1870 } 1871 1872 /** 1873 * Add an additional content view to the activity. Added after any existing 1874 * ones in the activity -- existing views are NOT removed. 1875 * 1876 * @param view The desired content to display. 1877 * @param params Layout parameters for the view. 1878 */ 1879 public void addContentView(View view, ViewGroup.LayoutParams params) { 1880 getWindow().addContentView(view, params); 1881 initActionBar(); 1882 } 1883 1884 /** 1885 * Sets whether this activity is finished when touched outside its window's 1886 * bounds. 1887 */ 1888 public void setFinishOnTouchOutside(boolean finish) { 1889 mWindow.setCloseOnTouchOutside(finish); 1890 } 1891 1892 /** 1893 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1894 * keys. 1895 * 1896 * @see #setDefaultKeyMode 1897 */ 1898 static public final int DEFAULT_KEYS_DISABLE = 0; 1899 /** 1900 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1901 * key handling. 1902 * 1903 * @see #setDefaultKeyMode 1904 */ 1905 static public final int DEFAULT_KEYS_DIALER = 1; 1906 /** 1907 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1908 * default key handling. 1909 * 1910 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1911 * 1912 * @see #setDefaultKeyMode 1913 */ 1914 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1915 /** 1916 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1917 * will start an application-defined search. (If the application or activity does not 1918 * actually define a search, the the keys will be ignored.) 1919 * 1920 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1921 * 1922 * @see #setDefaultKeyMode 1923 */ 1924 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1925 1926 /** 1927 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1928 * will start a global search (typically web search, but some platforms may define alternate 1929 * methods for global search) 1930 * 1931 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1932 * 1933 * @see #setDefaultKeyMode 1934 */ 1935 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1936 1937 /** 1938 * Select the default key handling for this activity. This controls what 1939 * will happen to key events that are not otherwise handled. The default 1940 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1941 * floor. Other modes allow you to launch the dialer 1942 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1943 * menu without requiring the menu key be held down 1944 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1945 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1946 * 1947 * <p>Note that the mode selected here does not impact the default 1948 * handling of system keys, such as the "back" and "menu" keys, and your 1949 * activity and its views always get a first chance to receive and handle 1950 * all application keys. 1951 * 1952 * @param mode The desired default key mode constant. 1953 * 1954 * @see #DEFAULT_KEYS_DISABLE 1955 * @see #DEFAULT_KEYS_DIALER 1956 * @see #DEFAULT_KEYS_SHORTCUT 1957 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1958 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1959 * @see #onKeyDown 1960 */ 1961 public final void setDefaultKeyMode(int mode) { 1962 mDefaultKeyMode = mode; 1963 1964 // Some modes use a SpannableStringBuilder to track & dispatch input events 1965 // This list must remain in sync with the switch in onKeyDown() 1966 switch (mode) { 1967 case DEFAULT_KEYS_DISABLE: 1968 case DEFAULT_KEYS_SHORTCUT: 1969 mDefaultKeySsb = null; // not used in these modes 1970 break; 1971 case DEFAULT_KEYS_DIALER: 1972 case DEFAULT_KEYS_SEARCH_LOCAL: 1973 case DEFAULT_KEYS_SEARCH_GLOBAL: 1974 mDefaultKeySsb = new SpannableStringBuilder(); 1975 Selection.setSelection(mDefaultKeySsb,0); 1976 break; 1977 default: 1978 throw new IllegalArgumentException(); 1979 } 1980 } 1981 1982 /** 1983 * Called when a key was pressed down and not handled by any of the views 1984 * inside of the activity. So, for example, key presses while the cursor 1985 * is inside a TextView will not trigger the event (unless it is a navigation 1986 * to another object) because TextView handles its own key presses. 1987 * 1988 * <p>If the focused view didn't want this event, this method is called. 1989 * 1990 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1991 * by calling {@link #onBackPressed()}, though the behavior varies based 1992 * on the application compatibility mode: for 1993 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1994 * it will set up the dispatch to call {@link #onKeyUp} where the action 1995 * will be performed; for earlier applications, it will perform the 1996 * action immediately in on-down, as those versions of the platform 1997 * behaved. 1998 * 1999 * <p>Other additional default key handling may be performed 2000 * if configured with {@link #setDefaultKeyMode}. 2001 * 2002 * @return Return <code>true</code> to prevent this event from being propagated 2003 * further, or <code>false</code> to indicate that you have not handled 2004 * this event and it should continue to be propagated. 2005 * @see #onKeyUp 2006 * @see android.view.KeyEvent 2007 */ 2008 public boolean onKeyDown(int keyCode, KeyEvent event) { 2009 if (keyCode == KeyEvent.KEYCODE_BACK) { 2010 if (getApplicationInfo().targetSdkVersion 2011 >= Build.VERSION_CODES.ECLAIR) { 2012 event.startTracking(); 2013 } else { 2014 onBackPressed(); 2015 } 2016 return true; 2017 } 2018 2019 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2020 return false; 2021 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2022 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2023 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2024 return true; 2025 } 2026 return false; 2027 } else { 2028 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2029 boolean clearSpannable = false; 2030 boolean handled; 2031 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2032 clearSpannable = true; 2033 handled = false; 2034 } else { 2035 handled = TextKeyListener.getInstance().onKeyDown( 2036 null, mDefaultKeySsb, keyCode, event); 2037 if (handled && mDefaultKeySsb.length() > 0) { 2038 // something useable has been typed - dispatch it now. 2039 2040 final String str = mDefaultKeySsb.toString(); 2041 clearSpannable = true; 2042 2043 switch (mDefaultKeyMode) { 2044 case DEFAULT_KEYS_DIALER: 2045 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2046 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2047 startActivity(intent); 2048 break; 2049 case DEFAULT_KEYS_SEARCH_LOCAL: 2050 startSearch(str, false, null, false); 2051 break; 2052 case DEFAULT_KEYS_SEARCH_GLOBAL: 2053 startSearch(str, false, null, true); 2054 break; 2055 } 2056 } 2057 } 2058 if (clearSpannable) { 2059 mDefaultKeySsb.clear(); 2060 mDefaultKeySsb.clearSpans(); 2061 Selection.setSelection(mDefaultKeySsb,0); 2062 } 2063 return handled; 2064 } 2065 } 2066 2067 /** 2068 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2069 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2070 * the event). 2071 */ 2072 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2073 return false; 2074 } 2075 2076 /** 2077 * Called when a key was released and not handled by any of the views 2078 * inside of the activity. So, for example, key presses while the cursor 2079 * is inside a TextView will not trigger the event (unless it is a navigation 2080 * to another object) because TextView handles its own key presses. 2081 * 2082 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2083 * and go back. 2084 * 2085 * @return Return <code>true</code> to prevent this event from being propagated 2086 * further, or <code>false</code> to indicate that you have not handled 2087 * this event and it should continue to be propagated. 2088 * @see #onKeyDown 2089 * @see KeyEvent 2090 */ 2091 public boolean onKeyUp(int keyCode, KeyEvent event) { 2092 if (getApplicationInfo().targetSdkVersion 2093 >= Build.VERSION_CODES.ECLAIR) { 2094 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2095 && !event.isCanceled()) { 2096 onBackPressed(); 2097 return true; 2098 } 2099 } 2100 return false; 2101 } 2102 2103 /** 2104 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2105 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2106 * the event). 2107 */ 2108 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2109 return false; 2110 } 2111 2112 /** 2113 * Called when the activity has detected the user's press of the back 2114 * key. The default implementation simply finishes the current activity, 2115 * but you can override this to do whatever you want. 2116 */ 2117 public void onBackPressed() { 2118 if (!mFragments.popBackStackImmediate()) { 2119 finish(); 2120 } 2121 } 2122 2123 /** 2124 * Called when a key shortcut event is not handled by any of the views in the Activity. 2125 * Override this method to implement global key shortcuts for the Activity. 2126 * Key shortcuts can also be implemented by setting the 2127 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2128 * 2129 * @param keyCode The value in event.getKeyCode(). 2130 * @param event Description of the key event. 2131 * @return True if the key shortcut was handled. 2132 */ 2133 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2134 return false; 2135 } 2136 2137 /** 2138 * Called when a touch screen event was not handled by any of the views 2139 * under it. This is most useful to process touch events that happen 2140 * outside of your window bounds, where there is no view to receive it. 2141 * 2142 * @param event The touch screen 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 onTouchEvent(MotionEvent event) { 2148 if (mWindow.shouldCloseOnTouch(this, event)) { 2149 finish(); 2150 return true; 2151 } 2152 2153 return false; 2154 } 2155 2156 /** 2157 * Called when the trackball was moved and not handled by any of the 2158 * views inside of the activity. So, for example, if the trackball moves 2159 * while focus is on a button, you will receive a call here because 2160 * buttons do not normally do anything with trackball events. The call 2161 * here happens <em>before</em> trackball movements are converted to 2162 * DPAD key events, which then get sent back to the view hierarchy, and 2163 * will be processed at the point for things like focus navigation. 2164 * 2165 * @param event The trackball event being processed. 2166 * 2167 * @return Return true if you have consumed the event, false if you haven't. 2168 * The default implementation always returns false. 2169 */ 2170 public boolean onTrackballEvent(MotionEvent event) { 2171 return false; 2172 } 2173 2174 /** 2175 * Called when a generic motion event was not handled by any of the 2176 * views inside of the activity. 2177 * <p> 2178 * Generic motion events describe joystick movements, mouse hovers, track pad 2179 * touches, scroll wheel movements and other input events. The 2180 * {@link MotionEvent#getSource() source} of the motion event specifies 2181 * the class of input that was received. Implementations of this method 2182 * must examine the bits in the source before processing the event. 2183 * The following code example shows how this is done. 2184 * </p><p> 2185 * Generic motion events with source class 2186 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2187 * are delivered to the view under the pointer. All other generic motion events are 2188 * delivered to the focused view. 2189 * </p><p> 2190 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2191 * handle this event. 2192 * </p> 2193 * 2194 * @param event The generic motion event being processed. 2195 * 2196 * @return Return true if you have consumed the event, false if you haven't. 2197 * The default implementation always returns false. 2198 */ 2199 public boolean onGenericMotionEvent(MotionEvent event) { 2200 return false; 2201 } 2202 2203 /** 2204 * Called whenever a key, touch, or trackball event is dispatched to the 2205 * activity. Implement this method if you wish to know that the user has 2206 * interacted with the device in some way while your activity is running. 2207 * This callback and {@link #onUserLeaveHint} are intended to help 2208 * activities manage status bar notifications intelligently; specifically, 2209 * for helping activities determine the proper time to cancel a notfication. 2210 * 2211 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2212 * be accompanied by calls to {@link #onUserInteraction}. This 2213 * ensures that your activity will be told of relevant user activity such 2214 * as pulling down the notification pane and touching an item there. 2215 * 2216 * <p>Note that this callback will be invoked for the touch down action 2217 * that begins a touch gesture, but may not be invoked for the touch-moved 2218 * and touch-up actions that follow. 2219 * 2220 * @see #onUserLeaveHint() 2221 */ 2222 public void onUserInteraction() { 2223 } 2224 2225 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2226 // Update window manager if: we have a view, that view is 2227 // attached to its parent (which will be a RootView), and 2228 // this activity is not embedded. 2229 if (mParent == null) { 2230 View decor = mDecor; 2231 if (decor != null && decor.getParent() != null) { 2232 getWindowManager().updateViewLayout(decor, params); 2233 } 2234 } 2235 } 2236 2237 public void onContentChanged() { 2238 } 2239 2240 /** 2241 * Called when the current {@link Window} of the activity gains or loses 2242 * focus. This is the best indicator of whether this activity is visible 2243 * to the user. The default implementation clears the key tracking 2244 * state, so should always be called. 2245 * 2246 * <p>Note that this provides information about global focus state, which 2247 * is managed independently of activity lifecycles. As such, while focus 2248 * changes will generally have some relation to lifecycle changes (an 2249 * activity that is stopped will not generally get window focus), you 2250 * should not rely on any particular order between the callbacks here and 2251 * those in the other lifecycle methods such as {@link #onResume}. 2252 * 2253 * <p>As a general rule, however, a resumed activity will have window 2254 * focus... unless it has displayed other dialogs or popups that take 2255 * input focus, in which case the activity itself will not have focus 2256 * when the other windows have it. Likewise, the system may display 2257 * system-level windows (such as the status bar notification panel or 2258 * a system alert) which will temporarily take window input focus without 2259 * pausing the foreground activity. 2260 * 2261 * @param hasFocus Whether the window of this activity has focus. 2262 * 2263 * @see #hasWindowFocus() 2264 * @see #onResume 2265 * @see View#onWindowFocusChanged(boolean) 2266 */ 2267 public void onWindowFocusChanged(boolean hasFocus) { 2268 } 2269 2270 /** 2271 * Called when the main window associated with the activity has been 2272 * attached to the window manager. 2273 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2274 * for more information. 2275 * @see View#onAttachedToWindow 2276 */ 2277 public void onAttachedToWindow() { 2278 } 2279 2280 /** 2281 * Called when the main window associated with the activity has been 2282 * detached from the window manager. 2283 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2284 * for more information. 2285 * @see View#onDetachedFromWindow 2286 */ 2287 public void onDetachedFromWindow() { 2288 } 2289 2290 /** 2291 * Returns true if this activity's <em>main</em> window currently has window focus. 2292 * Note that this is not the same as the view itself having focus. 2293 * 2294 * @return True if this activity's main window currently has window focus. 2295 * 2296 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2297 */ 2298 public boolean hasWindowFocus() { 2299 Window w = getWindow(); 2300 if (w != null) { 2301 View d = w.getDecorView(); 2302 if (d != null) { 2303 return d.hasWindowFocus(); 2304 } 2305 } 2306 return false; 2307 } 2308 2309 /** 2310 * Called to process key events. You can override this to intercept all 2311 * key events before they are dispatched to the window. Be sure to call 2312 * this implementation for key events that should be handled normally. 2313 * 2314 * @param event The key event. 2315 * 2316 * @return boolean Return true if this event was consumed. 2317 */ 2318 public boolean dispatchKeyEvent(KeyEvent event) { 2319 onUserInteraction(); 2320 Window win = getWindow(); 2321 if (win.superDispatchKeyEvent(event)) { 2322 return true; 2323 } 2324 View decor = mDecor; 2325 if (decor == null) decor = win.getDecorView(); 2326 return event.dispatch(this, decor != null 2327 ? decor.getKeyDispatcherState() : null, this); 2328 } 2329 2330 /** 2331 * Called to process a key shortcut event. 2332 * You can override this to intercept all key shortcut events before they are 2333 * dispatched to the window. Be sure to call this implementation for key shortcut 2334 * events that should be handled normally. 2335 * 2336 * @param event The key shortcut event. 2337 * @return True if this event was consumed. 2338 */ 2339 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2340 onUserInteraction(); 2341 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2342 return true; 2343 } 2344 return onKeyShortcut(event.getKeyCode(), event); 2345 } 2346 2347 /** 2348 * Called to process touch screen events. You can override this to 2349 * intercept all touch screen events before they are dispatched to the 2350 * window. Be sure to call this implementation for touch screen events 2351 * that should be handled normally. 2352 * 2353 * @param ev The touch screen event. 2354 * 2355 * @return boolean Return true if this event was consumed. 2356 */ 2357 public boolean dispatchTouchEvent(MotionEvent ev) { 2358 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2359 onUserInteraction(); 2360 } 2361 if (getWindow().superDispatchTouchEvent(ev)) { 2362 return true; 2363 } 2364 return onTouchEvent(ev); 2365 } 2366 2367 /** 2368 * Called to process trackball events. You can override this to 2369 * intercept all trackball events before they are dispatched to the 2370 * window. Be sure to call this implementation for trackball events 2371 * that should be handled normally. 2372 * 2373 * @param ev The trackball event. 2374 * 2375 * @return boolean Return true if this event was consumed. 2376 */ 2377 public boolean dispatchTrackballEvent(MotionEvent ev) { 2378 onUserInteraction(); 2379 if (getWindow().superDispatchTrackballEvent(ev)) { 2380 return true; 2381 } 2382 return onTrackballEvent(ev); 2383 } 2384 2385 /** 2386 * Called to process generic motion events. You can override this to 2387 * intercept all generic motion events before they are dispatched to the 2388 * window. Be sure to call this implementation for generic motion events 2389 * that should be handled normally. 2390 * 2391 * @param ev The generic motion event. 2392 * 2393 * @return boolean Return true if this event was consumed. 2394 */ 2395 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2396 onUserInteraction(); 2397 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2398 return true; 2399 } 2400 return onGenericMotionEvent(ev); 2401 } 2402 2403 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2404 event.setClassName(getClass().getName()); 2405 event.setPackageName(getPackageName()); 2406 2407 LayoutParams params = getWindow().getAttributes(); 2408 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2409 (params.height == LayoutParams.MATCH_PARENT); 2410 event.setFullScreen(isFullScreen); 2411 2412 CharSequence title = getTitle(); 2413 if (!TextUtils.isEmpty(title)) { 2414 event.getText().add(title); 2415 } 2416 2417 return true; 2418 } 2419 2420 /** 2421 * Default implementation of 2422 * {@link android.view.Window.Callback#onCreatePanelView} 2423 * for activities. This 2424 * simply returns null so that all panel sub-windows will have the default 2425 * menu behavior. 2426 */ 2427 public View onCreatePanelView(int featureId) { 2428 return null; 2429 } 2430 2431 /** 2432 * Default implementation of 2433 * {@link android.view.Window.Callback#onCreatePanelMenu} 2434 * for activities. This calls through to the new 2435 * {@link #onCreateOptionsMenu} method for the 2436 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2437 * so that subclasses of Activity don't need to deal with feature codes. 2438 */ 2439 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2440 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2441 boolean show = onCreateOptionsMenu(menu); 2442 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2443 return show; 2444 } 2445 return false; 2446 } 2447 2448 /** 2449 * Default implementation of 2450 * {@link android.view.Window.Callback#onPreparePanel} 2451 * for activities. This 2452 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2453 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2454 * panel, so that subclasses of 2455 * Activity don't need to deal with feature codes. 2456 */ 2457 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2458 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2459 boolean goforit = onPrepareOptionsMenu(menu); 2460 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2461 return goforit && menu.hasVisibleItems(); 2462 } 2463 return true; 2464 } 2465 2466 /** 2467 * {@inheritDoc} 2468 * 2469 * @return The default implementation returns true. 2470 */ 2471 public boolean onMenuOpened(int featureId, Menu menu) { 2472 if (featureId == Window.FEATURE_ACTION_BAR) { 2473 initActionBar(); 2474 if (mActionBar != null) { 2475 mActionBar.dispatchMenuVisibilityChanged(true); 2476 } else { 2477 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2478 } 2479 } 2480 return true; 2481 } 2482 2483 /** 2484 * Default implementation of 2485 * {@link android.view.Window.Callback#onMenuItemSelected} 2486 * for activities. This calls through to the new 2487 * {@link #onOptionsItemSelected} method for the 2488 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2489 * panel, so that subclasses of 2490 * Activity don't need to deal with feature codes. 2491 */ 2492 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2493 switch (featureId) { 2494 case Window.FEATURE_OPTIONS_PANEL: 2495 // Put event logging here so it gets called even if subclass 2496 // doesn't call through to superclass's implmeentation of each 2497 // of these methods below 2498 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2499 if (onOptionsItemSelected(item)) { 2500 return true; 2501 } 2502 return mFragments.dispatchOptionsItemSelected(item); 2503 2504 case Window.FEATURE_CONTEXT_MENU: 2505 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2506 if (onContextItemSelected(item)) { 2507 return true; 2508 } 2509 return mFragments.dispatchContextItemSelected(item); 2510 2511 default: 2512 return false; 2513 } 2514 } 2515 2516 /** 2517 * Default implementation of 2518 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2519 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2520 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2521 * so that subclasses of Activity don't need to deal with feature codes. 2522 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2523 * {@link #onContextMenuClosed(Menu)} will be called. 2524 */ 2525 public void onPanelClosed(int featureId, Menu menu) { 2526 switch (featureId) { 2527 case Window.FEATURE_OPTIONS_PANEL: 2528 mFragments.dispatchOptionsMenuClosed(menu); 2529 onOptionsMenuClosed(menu); 2530 break; 2531 2532 case Window.FEATURE_CONTEXT_MENU: 2533 onContextMenuClosed(menu); 2534 break; 2535 2536 case Window.FEATURE_ACTION_BAR: 2537 initActionBar(); 2538 mActionBar.dispatchMenuVisibilityChanged(false); 2539 break; 2540 } 2541 } 2542 2543 /** 2544 * Declare that the options menu has changed, so should be recreated. 2545 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2546 * time it needs to be displayed. 2547 */ 2548 public void invalidateOptionsMenu() { 2549 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2550 } 2551 2552 /** 2553 * Initialize the contents of the Activity's standard options menu. You 2554 * should place your menu items in to <var>menu</var>. 2555 * 2556 * <p>This is only called once, the first time the options menu is 2557 * displayed. To update the menu every time it is displayed, see 2558 * {@link #onPrepareOptionsMenu}. 2559 * 2560 * <p>The default implementation populates the menu with standard system 2561 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2562 * they will be correctly ordered with application-defined menu items. 2563 * Deriving classes should always call through to the base implementation. 2564 * 2565 * <p>You can safely hold on to <var>menu</var> (and any items created 2566 * from it), making modifications to it as desired, until the next 2567 * time onCreateOptionsMenu() is called. 2568 * 2569 * <p>When you add items to the menu, you can implement the Activity's 2570 * {@link #onOptionsItemSelected} method to handle them there. 2571 * 2572 * @param menu The options menu in which you place your items. 2573 * 2574 * @return You must return true for the menu to be displayed; 2575 * if you return false it will not be shown. 2576 * 2577 * @see #onPrepareOptionsMenu 2578 * @see #onOptionsItemSelected 2579 */ 2580 public boolean onCreateOptionsMenu(Menu menu) { 2581 if (mParent != null) { 2582 return mParent.onCreateOptionsMenu(menu); 2583 } 2584 return true; 2585 } 2586 2587 /** 2588 * Prepare the Screen's standard options menu to be displayed. This is 2589 * called right before the menu is shown, every time it is shown. You can 2590 * use this method to efficiently enable/disable items or otherwise 2591 * dynamically modify the contents. 2592 * 2593 * <p>The default implementation updates the system menu items based on the 2594 * activity's state. Deriving classes should always call through to the 2595 * base class implementation. 2596 * 2597 * @param menu The options menu as last shown or first initialized by 2598 * onCreateOptionsMenu(). 2599 * 2600 * @return You must return true for the menu to be displayed; 2601 * if you return false it will not be shown. 2602 * 2603 * @see #onCreateOptionsMenu 2604 */ 2605 public boolean onPrepareOptionsMenu(Menu menu) { 2606 if (mParent != null) { 2607 return mParent.onPrepareOptionsMenu(menu); 2608 } 2609 return true; 2610 } 2611 2612 /** 2613 * This hook is called whenever an item in your options menu is selected. 2614 * The default implementation simply returns false to have the normal 2615 * processing happen (calling the item's Runnable or sending a message to 2616 * its Handler as appropriate). You can use this method for any items 2617 * for which you would like to do processing without those other 2618 * facilities. 2619 * 2620 * <p>Derived classes should call through to the base class for it to 2621 * perform the default menu handling. 2622 * 2623 * @param item The menu item that was selected. 2624 * 2625 * @return boolean Return false to allow normal menu processing to 2626 * proceed, true to consume it here. 2627 * 2628 * @see #onCreateOptionsMenu 2629 */ 2630 public boolean onOptionsItemSelected(MenuItem item) { 2631 if (mParent != null) { 2632 return mParent.onOptionsItemSelected(item); 2633 } 2634 return false; 2635 } 2636 2637 /** 2638 * This hook is called whenever the options menu is being closed (either by the user canceling 2639 * the menu with the back/menu button, or when an item is selected). 2640 * 2641 * @param menu The options menu as last shown or first initialized by 2642 * onCreateOptionsMenu(). 2643 */ 2644 public void onOptionsMenuClosed(Menu menu) { 2645 if (mParent != null) { 2646 mParent.onOptionsMenuClosed(menu); 2647 } 2648 } 2649 2650 /** 2651 * Programmatically opens the options menu. If the options menu is already 2652 * open, this method does nothing. 2653 */ 2654 public void openOptionsMenu() { 2655 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2656 } 2657 2658 /** 2659 * Progammatically closes the options menu. If the options menu is already 2660 * closed, this method does nothing. 2661 */ 2662 public void closeOptionsMenu() { 2663 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2664 } 2665 2666 /** 2667 * Called when a context menu for the {@code view} is about to be shown. 2668 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2669 * time the context menu is about to be shown and should be populated for 2670 * the view (or item inside the view for {@link AdapterView} subclasses, 2671 * this can be found in the {@code menuInfo})). 2672 * <p> 2673 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2674 * item has been selected. 2675 * <p> 2676 * It is not safe to hold onto the context menu after this method returns. 2677 * {@inheritDoc} 2678 */ 2679 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2680 } 2681 2682 /** 2683 * Registers a context menu to be shown for the given view (multiple views 2684 * can show the context menu). This method will set the 2685 * {@link OnCreateContextMenuListener} on the view to this activity, so 2686 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2687 * called when it is time to show the context menu. 2688 * 2689 * @see #unregisterForContextMenu(View) 2690 * @param view The view that should show a context menu. 2691 */ 2692 public void registerForContextMenu(View view) { 2693 view.setOnCreateContextMenuListener(this); 2694 } 2695 2696 /** 2697 * Prevents a context menu to be shown for the given view. This method will remove the 2698 * {@link OnCreateContextMenuListener} on the view. 2699 * 2700 * @see #registerForContextMenu(View) 2701 * @param view The view that should stop showing a context menu. 2702 */ 2703 public void unregisterForContextMenu(View view) { 2704 view.setOnCreateContextMenuListener(null); 2705 } 2706 2707 /** 2708 * Programmatically opens the context menu for a particular {@code view}. 2709 * The {@code view} should have been added via 2710 * {@link #registerForContextMenu(View)}. 2711 * 2712 * @param view The view to show the context menu for. 2713 */ 2714 public void openContextMenu(View view) { 2715 view.showContextMenu(); 2716 } 2717 2718 /** 2719 * Programmatically closes the most recently opened context menu, if showing. 2720 */ 2721 public void closeContextMenu() { 2722 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2723 } 2724 2725 /** 2726 * This hook is called whenever an item in a context menu is selected. The 2727 * default implementation simply returns false to have the normal processing 2728 * happen (calling the item's Runnable or sending a message to its Handler 2729 * as appropriate). You can use this method for any items for which you 2730 * would like to do processing without those other facilities. 2731 * <p> 2732 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2733 * View that added this menu item. 2734 * <p> 2735 * Derived classes should call through to the base class for it to perform 2736 * the default menu handling. 2737 * 2738 * @param item The context menu item that was selected. 2739 * @return boolean Return false to allow normal context menu processing to 2740 * proceed, true to consume it here. 2741 */ 2742 public boolean onContextItemSelected(MenuItem item) { 2743 if (mParent != null) { 2744 return mParent.onContextItemSelected(item); 2745 } 2746 return false; 2747 } 2748 2749 /** 2750 * This hook is called whenever the context menu is being closed (either by 2751 * the user canceling the menu with the back/menu button, or when an item is 2752 * selected). 2753 * 2754 * @param menu The context menu that is being closed. 2755 */ 2756 public void onContextMenuClosed(Menu menu) { 2757 if (mParent != null) { 2758 mParent.onContextMenuClosed(menu); 2759 } 2760 } 2761 2762 /** 2763 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2764 */ 2765 @Deprecated 2766 protected Dialog onCreateDialog(int id) { 2767 return null; 2768 } 2769 2770 /** 2771 * Callback for creating dialogs that are managed (saved and restored) for you 2772 * by the activity. The default implementation calls through to 2773 * {@link #onCreateDialog(int)} for compatibility. 2774 * 2775 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2776 * or later, consider instead using a {@link DialogFragment} instead.</em> 2777 * 2778 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2779 * this method the first time, and hang onto it thereafter. Any dialog 2780 * that is created by this method will automatically be saved and restored 2781 * for you, including whether it is showing. 2782 * 2783 * <p>If you would like the activity to manage saving and restoring dialogs 2784 * for you, you should override this method and handle any ids that are 2785 * passed to {@link #showDialog}. 2786 * 2787 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2788 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2789 * 2790 * @param id The id of the dialog. 2791 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2792 * @return The dialog. If you return null, the dialog will not be created. 2793 * 2794 * @see #onPrepareDialog(int, Dialog, Bundle) 2795 * @see #showDialog(int, Bundle) 2796 * @see #dismissDialog(int) 2797 * @see #removeDialog(int) 2798 * 2799 * @deprecated Use the new {@link DialogFragment} class with 2800 * {@link FragmentManager} instead; this is also 2801 * available on older platforms through the Android compatibility package. 2802 */ 2803 @Deprecated 2804 protected Dialog onCreateDialog(int id, Bundle args) { 2805 return onCreateDialog(id); 2806 } 2807 2808 /** 2809 * @deprecated Old no-arguments version of 2810 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2811 */ 2812 @Deprecated 2813 protected void onPrepareDialog(int id, Dialog dialog) { 2814 dialog.setOwnerActivity(this); 2815 } 2816 2817 /** 2818 * Provides an opportunity to prepare a managed dialog before it is being 2819 * shown. The default implementation calls through to 2820 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2821 * 2822 * <p> 2823 * Override this if you need to update a managed dialog based on the state 2824 * of the application each time it is shown. For example, a time picker 2825 * dialog might want to be updated with the current time. You should call 2826 * through to the superclass's implementation. The default implementation 2827 * will set this Activity as the owner activity on the Dialog. 2828 * 2829 * @param id The id of the managed dialog. 2830 * @param dialog The dialog. 2831 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2832 * @see #onCreateDialog(int, Bundle) 2833 * @see #showDialog(int) 2834 * @see #dismissDialog(int) 2835 * @see #removeDialog(int) 2836 * 2837 * @deprecated Use the new {@link DialogFragment} class with 2838 * {@link FragmentManager} instead; this is also 2839 * available on older platforms through the Android compatibility package. 2840 */ 2841 @Deprecated 2842 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2843 onPrepareDialog(id, dialog); 2844 } 2845 2846 /** 2847 * Simple version of {@link #showDialog(int, Bundle)} that does not 2848 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2849 * with null arguments. 2850 * 2851 * @deprecated Use the new {@link DialogFragment} class with 2852 * {@link FragmentManager} instead; this is also 2853 * available on older platforms through the Android compatibility package. 2854 */ 2855 @Deprecated 2856 public final void showDialog(int id) { 2857 showDialog(id, null); 2858 } 2859 2860 /** 2861 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2862 * will be made with the same id the first time this is called for a given 2863 * id. From thereafter, the dialog will be automatically saved and restored. 2864 * 2865 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2866 * or later, consider instead using a {@link DialogFragment} instead.</em> 2867 * 2868 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2869 * be made to provide an opportunity to do any timely preparation. 2870 * 2871 * @param id The id of the managed dialog. 2872 * @param args Arguments to pass through to the dialog. These will be saved 2873 * and restored for you. Note that if the dialog is already created, 2874 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2875 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2876 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2877 * @return Returns true if the Dialog was created; false is returned if 2878 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2879 * 2880 * @see Dialog 2881 * @see #onCreateDialog(int, Bundle) 2882 * @see #onPrepareDialog(int, Dialog, Bundle) 2883 * @see #dismissDialog(int) 2884 * @see #removeDialog(int) 2885 * 2886 * @deprecated Use the new {@link DialogFragment} class with 2887 * {@link FragmentManager} instead; this is also 2888 * available on older platforms through the Android compatibility package. 2889 */ 2890 @Deprecated 2891 public final boolean showDialog(int id, Bundle args) { 2892 if (mManagedDialogs == null) { 2893 mManagedDialogs = new SparseArray<ManagedDialog>(); 2894 } 2895 ManagedDialog md = mManagedDialogs.get(id); 2896 if (md == null) { 2897 md = new ManagedDialog(); 2898 md.mDialog = createDialog(id, null, args); 2899 if (md.mDialog == null) { 2900 return false; 2901 } 2902 mManagedDialogs.put(id, md); 2903 } 2904 2905 md.mArgs = args; 2906 onPrepareDialog(id, md.mDialog, args); 2907 md.mDialog.show(); 2908 return true; 2909 } 2910 2911 /** 2912 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2913 * 2914 * @param id The id of the managed dialog. 2915 * 2916 * @throws IllegalArgumentException if the id was not previously shown via 2917 * {@link #showDialog(int)}. 2918 * 2919 * @see #onCreateDialog(int, Bundle) 2920 * @see #onPrepareDialog(int, Dialog, Bundle) 2921 * @see #showDialog(int) 2922 * @see #removeDialog(int) 2923 * 2924 * @deprecated Use the new {@link DialogFragment} class with 2925 * {@link FragmentManager} instead; this is also 2926 * available on older platforms through the Android compatibility package. 2927 */ 2928 @Deprecated 2929 public final void dismissDialog(int id) { 2930 if (mManagedDialogs == null) { 2931 throw missingDialog(id); 2932 } 2933 2934 final ManagedDialog md = mManagedDialogs.get(id); 2935 if (md == null) { 2936 throw missingDialog(id); 2937 } 2938 md.mDialog.dismiss(); 2939 } 2940 2941 /** 2942 * Creates an exception to throw if a user passed in a dialog id that is 2943 * unexpected. 2944 */ 2945 private IllegalArgumentException missingDialog(int id) { 2946 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2947 + "shown via Activity#showDialog"); 2948 } 2949 2950 /** 2951 * Removes any internal references to a dialog managed by this Activity. 2952 * If the dialog is showing, it will dismiss it as part of the clean up. 2953 * 2954 * <p>This can be useful if you know that you will never show a dialog again and 2955 * want to avoid the overhead of saving and restoring it in the future. 2956 * 2957 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2958 * will not throw an exception if you try to remove an ID that does not 2959 * currently have an associated dialog.</p> 2960 * 2961 * @param id The id of the managed dialog. 2962 * 2963 * @see #onCreateDialog(int, Bundle) 2964 * @see #onPrepareDialog(int, Dialog, Bundle) 2965 * @see #showDialog(int) 2966 * @see #dismissDialog(int) 2967 * 2968 * @deprecated Use the new {@link DialogFragment} class with 2969 * {@link FragmentManager} instead; this is also 2970 * available on older platforms through the Android compatibility package. 2971 */ 2972 @Deprecated 2973 public final void removeDialog(int id) { 2974 if (mManagedDialogs != null) { 2975 final ManagedDialog md = mManagedDialogs.get(id); 2976 if (md != null) { 2977 md.mDialog.dismiss(); 2978 mManagedDialogs.remove(id); 2979 } 2980 } 2981 } 2982 2983 /** 2984 * This hook is called when the user signals the desire to start a search. 2985 * 2986 * <p>You can use this function as a simple way to launch the search UI, in response to a 2987 * menu item, search button, or other widgets within your activity. Unless overidden, 2988 * calling this function is the same as calling 2989 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2990 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2991 * 2992 * <p>You can override this function to force global search, e.g. in response to a dedicated 2993 * search key, or to block search entirely (by simply returning false). 2994 * 2995 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2996 * The default implementation always returns {@code true}. 2997 * 2998 * @see android.app.SearchManager 2999 */ 3000 public boolean onSearchRequested() { 3001 startSearch(null, false, null, false); 3002 return true; 3003 } 3004 3005 /** 3006 * This hook is called to launch the search UI. 3007 * 3008 * <p>It is typically called from onSearchRequested(), either directly from 3009 * Activity.onSearchRequested() or from an overridden version in any given 3010 * Activity. If your goal is simply to activate search, it is preferred to call 3011 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 3012 * is to inject specific data such as context data, it is preferred to <i>override</i> 3013 * onSearchRequested(), so that any callers to it will benefit from the override. 3014 * 3015 * @param initialQuery Any non-null non-empty string will be inserted as 3016 * pre-entered text in the search query box. 3017 * @param selectInitialQuery If true, the intial query will be preselected, which means that 3018 * any further typing will replace it. This is useful for cases where an entire pre-formed 3019 * query is being inserted. If false, the selection point will be placed at the end of the 3020 * inserted query. This is useful when the inserted query is text that the user entered, 3021 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3022 * if initialQuery is a non-empty string.</i> 3023 * @param appSearchData An application can insert application-specific 3024 * context here, in order to improve quality or specificity of its own 3025 * searches. This data will be returned with SEARCH intent(s). Null if 3026 * no extra data is required. 3027 * @param globalSearch If false, this will only launch the search that has been specifically 3028 * defined by the application (which is usually defined as a local search). If no default 3029 * search is defined in the current application or activity, global search will be launched. 3030 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3031 * 3032 * @see android.app.SearchManager 3033 * @see #onSearchRequested 3034 */ 3035 public void startSearch(String initialQuery, boolean selectInitialQuery, 3036 Bundle appSearchData, boolean globalSearch) { 3037 ensureSearchManager(); 3038 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3039 appSearchData, globalSearch); 3040 } 3041 3042 /** 3043 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3044 * the search dialog. Made available for testing purposes. 3045 * 3046 * @param query The query to trigger. If empty, the request will be ignored. 3047 * @param appSearchData An application can insert application-specific 3048 * context here, in order to improve quality or specificity of its own 3049 * searches. This data will be returned with SEARCH intent(s). Null if 3050 * no extra data is required. 3051 */ 3052 public void triggerSearch(String query, Bundle appSearchData) { 3053 ensureSearchManager(); 3054 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3055 } 3056 3057 /** 3058 * Request that key events come to this activity. Use this if your 3059 * activity has no views with focus, but the activity still wants 3060 * a chance to process key events. 3061 * 3062 * @see android.view.Window#takeKeyEvents 3063 */ 3064 public void takeKeyEvents(boolean get) { 3065 getWindow().takeKeyEvents(get); 3066 } 3067 3068 /** 3069 * Enable extended window features. This is a convenience for calling 3070 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3071 * 3072 * @param featureId The desired feature as defined in 3073 * {@link android.view.Window}. 3074 * @return Returns true if the requested feature is supported and now 3075 * enabled. 3076 * 3077 * @see android.view.Window#requestFeature 3078 */ 3079 public final boolean requestWindowFeature(int featureId) { 3080 return getWindow().requestFeature(featureId); 3081 } 3082 3083 /** 3084 * Convenience for calling 3085 * {@link android.view.Window#setFeatureDrawableResource}. 3086 */ 3087 public final void setFeatureDrawableResource(int featureId, int resId) { 3088 getWindow().setFeatureDrawableResource(featureId, resId); 3089 } 3090 3091 /** 3092 * Convenience for calling 3093 * {@link android.view.Window#setFeatureDrawableUri}. 3094 */ 3095 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3096 getWindow().setFeatureDrawableUri(featureId, uri); 3097 } 3098 3099 /** 3100 * Convenience for calling 3101 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3102 */ 3103 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3104 getWindow().setFeatureDrawable(featureId, drawable); 3105 } 3106 3107 /** 3108 * Convenience for calling 3109 * {@link android.view.Window#setFeatureDrawableAlpha}. 3110 */ 3111 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3112 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3113 } 3114 3115 /** 3116 * Convenience for calling 3117 * {@link android.view.Window#getLayoutInflater}. 3118 */ 3119 public LayoutInflater getLayoutInflater() { 3120 return getWindow().getLayoutInflater(); 3121 } 3122 3123 /** 3124 * Returns a {@link MenuInflater} with this context. 3125 */ 3126 public MenuInflater getMenuInflater() { 3127 // Make sure that action views can get an appropriate theme. 3128 if (mMenuInflater == null) { 3129 initActionBar(); 3130 if (mActionBar != null) { 3131 mMenuInflater = new MenuInflater(mActionBar.getThemedContext()); 3132 } else { 3133 mMenuInflater = new MenuInflater(this); 3134 } 3135 } 3136 return mMenuInflater; 3137 } 3138 3139 @Override 3140 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3141 boolean first) { 3142 if (mParent == null) { 3143 super.onApplyThemeResource(theme, resid, first); 3144 } else { 3145 try { 3146 theme.setTo(mParent.getTheme()); 3147 } catch (Exception e) { 3148 // Empty 3149 } 3150 theme.applyStyle(resid, false); 3151 } 3152 } 3153 3154 /** 3155 * Launch an activity for which you would like a result when it finished. 3156 * When this activity exits, your 3157 * onActivityResult() method will be called with the given requestCode. 3158 * Using a negative requestCode is the same as calling 3159 * {@link #startActivity} (the activity is not launched as a sub-activity). 3160 * 3161 * <p>Note that this method should only be used with Intent protocols 3162 * that are defined to return a result. In other protocols (such as 3163 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3164 * not get the result when you expect. For example, if the activity you 3165 * are launching uses the singleTask launch mode, it will not run in your 3166 * task and thus you will immediately receive a cancel result. 3167 * 3168 * <p>As a special case, if you call startActivityForResult() with a requestCode 3169 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3170 * activity, then your window will not be displayed until a result is 3171 * returned back from the started activity. This is to avoid visible 3172 * flickering when redirecting to another activity. 3173 * 3174 * <p>This method throws {@link android.content.ActivityNotFoundException} 3175 * if there was no Activity found to run the given Intent. 3176 * 3177 * @param intent The intent to start. 3178 * @param requestCode If >= 0, this code will be returned in 3179 * onActivityResult() when the activity exits. 3180 * 3181 * @throws android.content.ActivityNotFoundException 3182 * 3183 * @see #startActivity 3184 */ 3185 public void startActivityForResult(Intent intent, int requestCode) { 3186 if (mParent == null) { 3187 Instrumentation.ActivityResult ar = 3188 mInstrumentation.execStartActivity( 3189 this, mMainThread.getApplicationThread(), mToken, this, 3190 intent, requestCode); 3191 if (ar != null) { 3192 mMainThread.sendActivityResult( 3193 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3194 ar.getResultData()); 3195 } 3196 if (requestCode >= 0) { 3197 // If this start is requesting a result, we can avoid making 3198 // the activity visible until the result is received. Setting 3199 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3200 // activity hidden during this time, to avoid flickering. 3201 // This can only be done when a result is requested because 3202 // that guarantees we will get information back when the 3203 // activity is finished, no matter what happens to it. 3204 mStartedActivity = true; 3205 } 3206 } else { 3207 mParent.startActivityFromChild(this, intent, requestCode); 3208 } 3209 } 3210 3211 /** 3212 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3213 * to use a IntentSender to describe the activity to be started. If 3214 * the IntentSender is for an activity, that activity will be started 3215 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3216 * here; otherwise, its associated action will be executed (such as 3217 * sending a broadcast) as if you had called 3218 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3219 * 3220 * @param intent The IntentSender to launch. 3221 * @param requestCode If >= 0, this code will be returned in 3222 * onActivityResult() when the activity exits. 3223 * @param fillInIntent If non-null, this will be provided as the 3224 * intent parameter to {@link IntentSender#sendIntent}. 3225 * @param flagsMask Intent flags in the original IntentSender that you 3226 * would like to change. 3227 * @param flagsValues Desired values for any bits set in 3228 * <var>flagsMask</var> 3229 * @param extraFlags Always set to 0. 3230 */ 3231 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3232 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3233 throws IntentSender.SendIntentException { 3234 if (mParent == null) { 3235 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3236 flagsMask, flagsValues, this); 3237 } else { 3238 mParent.startIntentSenderFromChild(this, intent, requestCode, 3239 fillInIntent, flagsMask, flagsValues, extraFlags); 3240 } 3241 } 3242 3243 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3244 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3245 throws IntentSender.SendIntentException { 3246 try { 3247 String resolvedType = null; 3248 if (fillInIntent != null) { 3249 fillInIntent.setAllowFds(false); 3250 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3251 } 3252 int result = ActivityManagerNative.getDefault() 3253 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3254 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3255 requestCode, flagsMask, flagsValues); 3256 if (result == IActivityManager.START_CANCELED) { 3257 throw new IntentSender.SendIntentException(); 3258 } 3259 Instrumentation.checkStartActivityResult(result, null); 3260 } catch (RemoteException e) { 3261 } 3262 if (requestCode >= 0) { 3263 // If this start is requesting a result, we can avoid making 3264 // the activity visible until the result is received. Setting 3265 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3266 // activity hidden during this time, to avoid flickering. 3267 // This can only be done when a result is requested because 3268 // that guarantees we will get information back when the 3269 // activity is finished, no matter what happens to it. 3270 mStartedActivity = true; 3271 } 3272 } 3273 3274 /** 3275 * Launch a new activity. You will not receive any information about when 3276 * the activity exits. This implementation overrides the base version, 3277 * providing information about 3278 * the activity performing the launch. Because of this additional 3279 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3280 * required; if not specified, the new activity will be added to the 3281 * task of the caller. 3282 * 3283 * <p>This method throws {@link android.content.ActivityNotFoundException} 3284 * if there was no Activity found to run the given Intent. 3285 * 3286 * @param intent The intent to start. 3287 * 3288 * @throws android.content.ActivityNotFoundException 3289 * 3290 * @see #startActivityForResult 3291 */ 3292 @Override 3293 public void startActivity(Intent intent) { 3294 startActivityForResult(intent, -1); 3295 } 3296 3297 /** 3298 * Launch a new activity. You will not receive any information about when 3299 * the activity exits. This implementation overrides the base version, 3300 * providing information about 3301 * the activity performing the launch. Because of this additional 3302 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3303 * required; if not specified, the new activity will be added to the 3304 * task of the caller. 3305 * 3306 * <p>This method throws {@link android.content.ActivityNotFoundException} 3307 * if there was no Activity found to run the given Intent. 3308 * 3309 * @param intents The intents to start. 3310 * 3311 * @throws android.content.ActivityNotFoundException 3312 * 3313 * @see #startActivityForResult 3314 */ 3315 @Override 3316 public void startActivities(Intent[] intents) { 3317 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3318 mToken, this, intents); 3319 } 3320 3321 /** 3322 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3323 * to start; see 3324 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3325 * for more information. 3326 * 3327 * @param intent The IntentSender to launch. 3328 * @param fillInIntent If non-null, this will be provided as the 3329 * intent parameter to {@link IntentSender#sendIntent}. 3330 * @param flagsMask Intent flags in the original IntentSender that you 3331 * would like to change. 3332 * @param flagsValues Desired values for any bits set in 3333 * <var>flagsMask</var> 3334 * @param extraFlags Always set to 0. 3335 */ 3336 public void startIntentSender(IntentSender intent, 3337 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3338 throws IntentSender.SendIntentException { 3339 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3340 flagsValues, extraFlags); 3341 } 3342 3343 /** 3344 * A special variation to launch an activity only if a new activity 3345 * instance is needed to handle the given Intent. In other words, this is 3346 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3347 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3348 * singleTask or singleTop 3349 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3350 * and the activity 3351 * that handles <var>intent</var> is the same as your currently running 3352 * activity, then a new instance is not needed. In this case, instead of 3353 * the normal behavior of calling {@link #onNewIntent} this function will 3354 * return and you can handle the Intent yourself. 3355 * 3356 * <p>This function can only be called from a top-level activity; if it is 3357 * called from a child activity, a runtime exception will be thrown. 3358 * 3359 * @param intent The intent to start. 3360 * @param requestCode If >= 0, this code will be returned in 3361 * onActivityResult() when the activity exits, as described in 3362 * {@link #startActivityForResult}. 3363 * 3364 * @return If a new activity was launched then true is returned; otherwise 3365 * false is returned and you must handle the Intent yourself. 3366 * 3367 * @see #startActivity 3368 * @see #startActivityForResult 3369 */ 3370 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3371 if (mParent == null) { 3372 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3373 try { 3374 intent.setAllowFds(false); 3375 result = ActivityManagerNative.getDefault() 3376 .startActivity(mMainThread.getApplicationThread(), 3377 intent, intent.resolveTypeIfNeeded( 3378 getContentResolver()), 3379 null, 0, 3380 mToken, mEmbeddedID, requestCode, true, false, 3381 null, null, false); 3382 } catch (RemoteException e) { 3383 // Empty 3384 } 3385 3386 Instrumentation.checkStartActivityResult(result, intent); 3387 3388 if (requestCode >= 0) { 3389 // If this start is requesting a result, we can avoid making 3390 // the activity visible until the result is received. Setting 3391 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3392 // activity hidden during this time, to avoid flickering. 3393 // This can only be done when a result is requested because 3394 // that guarantees we will get information back when the 3395 // activity is finished, no matter what happens to it. 3396 mStartedActivity = true; 3397 } 3398 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3399 } 3400 3401 throw new UnsupportedOperationException( 3402 "startActivityIfNeeded can only be called from a top-level activity"); 3403 } 3404 3405 /** 3406 * Special version of starting an activity, for use when you are replacing 3407 * other activity components. You can use this to hand the Intent off 3408 * to the next Activity that can handle it. You typically call this in 3409 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3410 * 3411 * @param intent The intent to dispatch to the next activity. For 3412 * correct behavior, this must be the same as the Intent that started 3413 * your own activity; the only changes you can make are to the extras 3414 * inside of it. 3415 * 3416 * @return Returns a boolean indicating whether there was another Activity 3417 * to start: true if there was a next activity to start, false if there 3418 * wasn't. In general, if true is returned you will then want to call 3419 * finish() on yourself. 3420 */ 3421 public boolean startNextMatchingActivity(Intent intent) { 3422 if (mParent == null) { 3423 try { 3424 intent.setAllowFds(false); 3425 return ActivityManagerNative.getDefault() 3426 .startNextMatchingActivity(mToken, intent); 3427 } catch (RemoteException e) { 3428 // Empty 3429 } 3430 return false; 3431 } 3432 3433 throw new UnsupportedOperationException( 3434 "startNextMatchingActivity can only be called from a top-level activity"); 3435 } 3436 3437 /** 3438 * This is called when a child activity of this one calls its 3439 * {@link #startActivity} or {@link #startActivityForResult} method. 3440 * 3441 * <p>This method throws {@link android.content.ActivityNotFoundException} 3442 * if there was no Activity found to run the given Intent. 3443 * 3444 * @param child The activity making the call. 3445 * @param intent The intent to start. 3446 * @param requestCode Reply request code. < 0 if reply is not requested. 3447 * 3448 * @throws android.content.ActivityNotFoundException 3449 * 3450 * @see #startActivity 3451 * @see #startActivityForResult 3452 */ 3453 public void startActivityFromChild(Activity child, Intent intent, 3454 int requestCode) { 3455 Instrumentation.ActivityResult ar = 3456 mInstrumentation.execStartActivity( 3457 this, mMainThread.getApplicationThread(), mToken, child, 3458 intent, requestCode); 3459 if (ar != null) { 3460 mMainThread.sendActivityResult( 3461 mToken, child.mEmbeddedID, requestCode, 3462 ar.getResultCode(), ar.getResultData()); 3463 } 3464 } 3465 3466 /** 3467 * This is called when a Fragment in this activity calls its 3468 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3469 * method. 3470 * 3471 * <p>This method throws {@link android.content.ActivityNotFoundException} 3472 * if there was no Activity found to run the given Intent. 3473 * 3474 * @param fragment The fragment making the call. 3475 * @param intent The intent to start. 3476 * @param requestCode Reply request code. < 0 if reply is not requested. 3477 * 3478 * @throws android.content.ActivityNotFoundException 3479 * 3480 * @see Fragment#startActivity 3481 * @see Fragment#startActivityForResult 3482 */ 3483 public void startActivityFromFragment(Fragment fragment, Intent intent, 3484 int requestCode) { 3485 Instrumentation.ActivityResult ar = 3486 mInstrumentation.execStartActivity( 3487 this, mMainThread.getApplicationThread(), mToken, fragment, 3488 intent, requestCode); 3489 if (ar != null) { 3490 mMainThread.sendActivityResult( 3491 mToken, fragment.mWho, requestCode, 3492 ar.getResultCode(), ar.getResultData()); 3493 } 3494 } 3495 3496 /** 3497 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3498 * taking a IntentSender; see 3499 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3500 * for more information. 3501 */ 3502 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3503 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3504 int extraFlags) 3505 throws IntentSender.SendIntentException { 3506 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3507 flagsMask, flagsValues, child); 3508 } 3509 3510 /** 3511 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3512 * or {@link #finish} to specify an explicit transition animation to 3513 * perform next. 3514 * @param enterAnim A resource ID of the animation resource to use for 3515 * the incoming activity. Use 0 for no animation. 3516 * @param exitAnim A resource ID of the animation resource to use for 3517 * the outgoing activity. Use 0 for no animation. 3518 */ 3519 public void overridePendingTransition(int enterAnim, int exitAnim) { 3520 try { 3521 ActivityManagerNative.getDefault().overridePendingTransition( 3522 mToken, getPackageName(), enterAnim, exitAnim); 3523 } catch (RemoteException e) { 3524 } 3525 } 3526 3527 /** 3528 * Call this to set the result that your activity will return to its 3529 * caller. 3530 * 3531 * @param resultCode The result code to propagate back to the originating 3532 * activity, often RESULT_CANCELED or RESULT_OK 3533 * 3534 * @see #RESULT_CANCELED 3535 * @see #RESULT_OK 3536 * @see #RESULT_FIRST_USER 3537 * @see #setResult(int, Intent) 3538 */ 3539 public final void setResult(int resultCode) { 3540 synchronized (this) { 3541 mResultCode = resultCode; 3542 mResultData = null; 3543 } 3544 } 3545 3546 /** 3547 * Call this to set the result that your activity will return to its 3548 * caller. 3549 * 3550 * @param resultCode The result code to propagate back to the originating 3551 * activity, often RESULT_CANCELED or RESULT_OK 3552 * @param data The data to propagate back to the originating activity. 3553 * 3554 * @see #RESULT_CANCELED 3555 * @see #RESULT_OK 3556 * @see #RESULT_FIRST_USER 3557 * @see #setResult(int) 3558 */ 3559 public final void setResult(int resultCode, Intent data) { 3560 synchronized (this) { 3561 mResultCode = resultCode; 3562 mResultData = data; 3563 } 3564 } 3565 3566 /** 3567 * Return the name of the package that invoked this activity. This is who 3568 * the data in {@link #setResult setResult()} will be sent to. You can 3569 * use this information to validate that the recipient is allowed to 3570 * receive the data. 3571 * 3572 * <p>Note: if the calling activity is not expecting a result (that is it 3573 * did not use the {@link #startActivityForResult} 3574 * form that includes a request code), then the calling package will be 3575 * null. 3576 * 3577 * @return The package of the activity that will receive your 3578 * reply, or null if none. 3579 */ 3580 public String getCallingPackage() { 3581 try { 3582 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3583 } catch (RemoteException e) { 3584 return null; 3585 } 3586 } 3587 3588 /** 3589 * Return the name of the activity that invoked this activity. This is 3590 * who the data in {@link #setResult setResult()} will be sent to. You 3591 * can use this information to validate that the recipient is allowed to 3592 * receive the data. 3593 * 3594 * <p>Note: if the calling activity is not expecting a result (that is it 3595 * did not use the {@link #startActivityForResult} 3596 * form that includes a request code), then the calling package will be 3597 * null. 3598 * 3599 * @return String The full name of the activity that will receive your 3600 * reply, or null if none. 3601 */ 3602 public ComponentName getCallingActivity() { 3603 try { 3604 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3605 } catch (RemoteException e) { 3606 return null; 3607 } 3608 } 3609 3610 /** 3611 * Control whether this activity's main window is visible. This is intended 3612 * only for the special case of an activity that is not going to show a 3613 * UI itself, but can't just finish prior to onResume() because it needs 3614 * to wait for a service binding or such. Setting this to false allows 3615 * you to prevent your UI from being shown during that time. 3616 * 3617 * <p>The default value for this is taken from the 3618 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3619 */ 3620 public void setVisible(boolean visible) { 3621 if (mVisibleFromClient != visible) { 3622 mVisibleFromClient = visible; 3623 if (mVisibleFromServer) { 3624 if (visible) makeVisible(); 3625 else mDecor.setVisibility(View.INVISIBLE); 3626 } 3627 } 3628 } 3629 3630 void makeVisible() { 3631 if (!mWindowAdded) { 3632 ViewManager wm = getWindowManager(); 3633 wm.addView(mDecor, getWindow().getAttributes()); 3634 mWindowAdded = true; 3635 } 3636 mDecor.setVisibility(View.VISIBLE); 3637 } 3638 3639 /** 3640 * Check to see whether this activity is in the process of finishing, 3641 * either because you called {@link #finish} on it or someone else 3642 * has requested that it finished. This is often used in 3643 * {@link #onPause} to determine whether the activity is simply pausing or 3644 * completely finishing. 3645 * 3646 * @return If the activity is finishing, returns true; else returns false. 3647 * 3648 * @see #finish 3649 */ 3650 public boolean isFinishing() { 3651 return mFinished; 3652 } 3653 3654 /** 3655 * Check to see whether this activity is in the process of being destroyed in order to be 3656 * recreated with a new configuration. This is often used in 3657 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3658 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3659 * 3660 * @return If the activity is being torn down in order to be recreated with a new configuration, 3661 * returns true; else returns false. 3662 */ 3663 public boolean isChangingConfigurations() { 3664 return mChangingConfigurations; 3665 } 3666 3667 /** 3668 * Cause this Activity to be recreated with a new instance. This results 3669 * in essentially the same flow as when the Activity is created due to 3670 * a configuration change -- the current instance will go through its 3671 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3672 */ 3673 public void recreate() { 3674 if (mParent != null) { 3675 throw new IllegalStateException("Can only be called on top-level activity"); 3676 } 3677 if (Looper.myLooper() != mMainThread.getLooper()) { 3678 throw new IllegalStateException("Must be called from main thread"); 3679 } 3680 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3681 } 3682 3683 /** 3684 * Call this when your activity is done and should be closed. The 3685 * ActivityResult is propagated back to whoever launched you via 3686 * onActivityResult(). 3687 */ 3688 public void finish() { 3689 if (mParent == null) { 3690 int resultCode; 3691 Intent resultData; 3692 synchronized (this) { 3693 resultCode = mResultCode; 3694 resultData = mResultData; 3695 } 3696 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 3697 try { 3698 if (resultData != null) { 3699 resultData.setAllowFds(false); 3700 } 3701 if (ActivityManagerNative.getDefault() 3702 .finishActivity(mToken, resultCode, resultData)) { 3703 mFinished = true; 3704 } 3705 } catch (RemoteException e) { 3706 // Empty 3707 } 3708 } else { 3709 mParent.finishFromChild(this); 3710 } 3711 } 3712 3713 /** 3714 * This is called when a child activity of this one calls its 3715 * {@link #finish} method. The default implementation simply calls 3716 * finish() on this activity (the parent), finishing the entire group. 3717 * 3718 * @param child The activity making the call. 3719 * 3720 * @see #finish 3721 */ 3722 public void finishFromChild(Activity child) { 3723 finish(); 3724 } 3725 3726 /** 3727 * Force finish another activity that you had previously started with 3728 * {@link #startActivityForResult}. 3729 * 3730 * @param requestCode The request code of the activity that you had 3731 * given to startActivityForResult(). If there are multiple 3732 * activities started with this request code, they 3733 * will all be finished. 3734 */ 3735 public void finishActivity(int requestCode) { 3736 if (mParent == null) { 3737 try { 3738 ActivityManagerNative.getDefault() 3739 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3740 } catch (RemoteException e) { 3741 // Empty 3742 } 3743 } else { 3744 mParent.finishActivityFromChild(this, requestCode); 3745 } 3746 } 3747 3748 /** 3749 * This is called when a child activity of this one calls its 3750 * finishActivity(). 3751 * 3752 * @param child The activity making the call. 3753 * @param requestCode Request code that had been used to start the 3754 * activity. 3755 */ 3756 public void finishActivityFromChild(Activity child, int requestCode) { 3757 try { 3758 ActivityManagerNative.getDefault() 3759 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3760 } catch (RemoteException e) { 3761 // Empty 3762 } 3763 } 3764 3765 /** 3766 * Called when an activity you launched exits, giving you the requestCode 3767 * you started it with, the resultCode it returned, and any additional 3768 * data from it. The <var>resultCode</var> will be 3769 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3770 * didn't return any result, or crashed during its operation. 3771 * 3772 * <p>You will receive this call immediately before onResume() when your 3773 * activity is re-starting. 3774 * 3775 * @param requestCode The integer request code originally supplied to 3776 * startActivityForResult(), allowing you to identify who this 3777 * result came from. 3778 * @param resultCode The integer result code returned by the child activity 3779 * through its setResult(). 3780 * @param data An Intent, which can return result data to the caller 3781 * (various data can be attached to Intent "extras"). 3782 * 3783 * @see #startActivityForResult 3784 * @see #createPendingResult 3785 * @see #setResult(int) 3786 */ 3787 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3788 } 3789 3790 /** 3791 * Create a new PendingIntent object which you can hand to others 3792 * for them to use to send result data back to your 3793 * {@link #onActivityResult} callback. The created object will be either 3794 * one-shot (becoming invalid after a result is sent back) or multiple 3795 * (allowing any number of results to be sent through it). 3796 * 3797 * @param requestCode Private request code for the sender that will be 3798 * associated with the result data when it is returned. The sender can not 3799 * modify this value, allowing you to identify incoming results. 3800 * @param data Default data to supply in the result, which may be modified 3801 * by the sender. 3802 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3803 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3804 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3805 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3806 * or any of the flags as supported by 3807 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3808 * of the intent that can be supplied when the actual send happens. 3809 * 3810 * @return Returns an existing or new PendingIntent matching the given 3811 * parameters. May return null only if 3812 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3813 * supplied. 3814 * 3815 * @see PendingIntent 3816 */ 3817 public PendingIntent createPendingResult(int requestCode, Intent data, 3818 int flags) { 3819 String packageName = getPackageName(); 3820 try { 3821 data.setAllowFds(false); 3822 IIntentSender target = 3823 ActivityManagerNative.getDefault().getIntentSender( 3824 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3825 mParent == null ? mToken : mParent.mToken, 3826 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3827 return target != null ? new PendingIntent(target) : null; 3828 } catch (RemoteException e) { 3829 // Empty 3830 } 3831 return null; 3832 } 3833 3834 /** 3835 * Change the desired orientation of this activity. If the activity 3836 * is currently in the foreground or otherwise impacting the screen 3837 * orientation, the screen will immediately be changed (possibly causing 3838 * the activity to be restarted). Otherwise, this will be used the next 3839 * time the activity is visible. 3840 * 3841 * @param requestedOrientation An orientation constant as used in 3842 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3843 */ 3844 public void setRequestedOrientation(int requestedOrientation) { 3845 if (mParent == null) { 3846 try { 3847 ActivityManagerNative.getDefault().setRequestedOrientation( 3848 mToken, requestedOrientation); 3849 } catch (RemoteException e) { 3850 // Empty 3851 } 3852 } else { 3853 mParent.setRequestedOrientation(requestedOrientation); 3854 } 3855 } 3856 3857 /** 3858 * Return the current requested orientation of the activity. This will 3859 * either be the orientation requested in its component's manifest, or 3860 * the last requested orientation given to 3861 * {@link #setRequestedOrientation(int)}. 3862 * 3863 * @return Returns an orientation constant as used in 3864 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3865 */ 3866 public int getRequestedOrientation() { 3867 if (mParent == null) { 3868 try { 3869 return ActivityManagerNative.getDefault() 3870 .getRequestedOrientation(mToken); 3871 } catch (RemoteException e) { 3872 // Empty 3873 } 3874 } else { 3875 return mParent.getRequestedOrientation(); 3876 } 3877 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3878 } 3879 3880 /** 3881 * Return the identifier of the task this activity is in. This identifier 3882 * will remain the same for the lifetime of the activity. 3883 * 3884 * @return Task identifier, an opaque integer. 3885 */ 3886 public int getTaskId() { 3887 try { 3888 return ActivityManagerNative.getDefault() 3889 .getTaskForActivity(mToken, false); 3890 } catch (RemoteException e) { 3891 return -1; 3892 } 3893 } 3894 3895 /** 3896 * Return whether this activity is the root of a task. The root is the 3897 * first activity in a task. 3898 * 3899 * @return True if this is the root activity, else false. 3900 */ 3901 public boolean isTaskRoot() { 3902 try { 3903 return ActivityManagerNative.getDefault() 3904 .getTaskForActivity(mToken, true) >= 0; 3905 } catch (RemoteException e) { 3906 return false; 3907 } 3908 } 3909 3910 /** 3911 * Move the task containing this activity to the back of the activity 3912 * stack. The activity's order within the task is unchanged. 3913 * 3914 * @param nonRoot If false then this only works if the activity is the root 3915 * of a task; if true it will work for any activity in 3916 * a task. 3917 * 3918 * @return If the task was moved (or it was already at the 3919 * back) true is returned, else false. 3920 */ 3921 public boolean moveTaskToBack(boolean nonRoot) { 3922 try { 3923 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3924 mToken, nonRoot); 3925 } catch (RemoteException e) { 3926 // Empty 3927 } 3928 return false; 3929 } 3930 3931 /** 3932 * Returns class name for this activity with the package prefix removed. 3933 * This is the default name used to read and write settings. 3934 * 3935 * @return The local class name. 3936 */ 3937 public String getLocalClassName() { 3938 final String pkg = getPackageName(); 3939 final String cls = mComponent.getClassName(); 3940 int packageLen = pkg.length(); 3941 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3942 || cls.charAt(packageLen) != '.') { 3943 return cls; 3944 } 3945 return cls.substring(packageLen+1); 3946 } 3947 3948 /** 3949 * Returns complete component name of this activity. 3950 * 3951 * @return Returns the complete component name for this activity 3952 */ 3953 public ComponentName getComponentName() 3954 { 3955 return mComponent; 3956 } 3957 3958 /** 3959 * Retrieve a {@link SharedPreferences} object for accessing preferences 3960 * that are private to this activity. This simply calls the underlying 3961 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3962 * class name as the preferences name. 3963 * 3964 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3965 * operation, {@link #MODE_WORLD_READABLE} and 3966 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3967 * 3968 * @return Returns the single SharedPreferences instance that can be used 3969 * to retrieve and modify the preference values. 3970 */ 3971 public SharedPreferences getPreferences(int mode) { 3972 return getSharedPreferences(getLocalClassName(), mode); 3973 } 3974 3975 private void ensureSearchManager() { 3976 if (mSearchManager != null) { 3977 return; 3978 } 3979 3980 mSearchManager = new SearchManager(this, null); 3981 } 3982 3983 @Override 3984 public Object getSystemService(String name) { 3985 if (getBaseContext() == null) { 3986 throw new IllegalStateException( 3987 "System services not available to Activities before onCreate()"); 3988 } 3989 3990 if (WINDOW_SERVICE.equals(name)) { 3991 return mWindowManager; 3992 } else if (SEARCH_SERVICE.equals(name)) { 3993 ensureSearchManager(); 3994 return mSearchManager; 3995 } 3996 return super.getSystemService(name); 3997 } 3998 3999 /** 4000 * Change the title associated with this activity. If this is a 4001 * top-level activity, the title for its window will change. If it 4002 * is an embedded activity, the parent can do whatever it wants 4003 * with it. 4004 */ 4005 public void setTitle(CharSequence title) { 4006 mTitle = title; 4007 onTitleChanged(title, mTitleColor); 4008 4009 if (mParent != null) { 4010 mParent.onChildTitleChanged(this, title); 4011 } 4012 } 4013 4014 /** 4015 * Change the title associated with this activity. If this is a 4016 * top-level activity, the title for its window will change. If it 4017 * is an embedded activity, the parent can do whatever it wants 4018 * with it. 4019 */ 4020 public void setTitle(int titleId) { 4021 setTitle(getText(titleId)); 4022 } 4023 4024 public void setTitleColor(int textColor) { 4025 mTitleColor = textColor; 4026 onTitleChanged(mTitle, textColor); 4027 } 4028 4029 public final CharSequence getTitle() { 4030 return mTitle; 4031 } 4032 4033 public final int getTitleColor() { 4034 return mTitleColor; 4035 } 4036 4037 protected void onTitleChanged(CharSequence title, int color) { 4038 if (mTitleReady) { 4039 final Window win = getWindow(); 4040 if (win != null) { 4041 win.setTitle(title); 4042 if (color != 0) { 4043 win.setTitleColor(color); 4044 } 4045 } 4046 } 4047 } 4048 4049 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4050 } 4051 4052 /** 4053 * Sets the visibility of the progress bar in the title. 4054 * <p> 4055 * In order for the progress bar to be shown, the feature must be requested 4056 * via {@link #requestWindowFeature(int)}. 4057 * 4058 * @param visible Whether to show the progress bars in the title. 4059 */ 4060 public final void setProgressBarVisibility(boolean visible) { 4061 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4062 Window.PROGRESS_VISIBILITY_OFF); 4063 } 4064 4065 /** 4066 * Sets the visibility of the indeterminate progress bar in the title. 4067 * <p> 4068 * In order for the progress bar to be shown, the feature must be requested 4069 * via {@link #requestWindowFeature(int)}. 4070 * 4071 * @param visible Whether to show the progress bars in the title. 4072 */ 4073 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4074 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4075 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4076 } 4077 4078 /** 4079 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4080 * is always indeterminate). 4081 * <p> 4082 * In order for the progress bar to be shown, the feature must be requested 4083 * via {@link #requestWindowFeature(int)}. 4084 * 4085 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4086 */ 4087 public final void setProgressBarIndeterminate(boolean indeterminate) { 4088 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4089 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4090 } 4091 4092 /** 4093 * Sets the progress for the progress bars in the title. 4094 * <p> 4095 * In order for the progress bar to be shown, the feature must be requested 4096 * via {@link #requestWindowFeature(int)}. 4097 * 4098 * @param progress The progress for the progress bar. Valid ranges are from 4099 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4100 * bar will be completely filled and will fade out. 4101 */ 4102 public final void setProgress(int progress) { 4103 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4104 } 4105 4106 /** 4107 * Sets the secondary progress for the progress bar in the title. This 4108 * progress is drawn between the primary progress (set via 4109 * {@link #setProgress(int)} and the background. It can be ideal for media 4110 * scenarios such as showing the buffering progress while the default 4111 * progress shows the play progress. 4112 * <p> 4113 * In order for the progress bar to be shown, the feature must be requested 4114 * via {@link #requestWindowFeature(int)}. 4115 * 4116 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4117 * 0 to 10000 (both inclusive). 4118 */ 4119 public final void setSecondaryProgress(int secondaryProgress) { 4120 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4121 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4122 } 4123 4124 /** 4125 * Suggests an audio stream whose volume should be changed by the hardware 4126 * volume controls. 4127 * <p> 4128 * The suggested audio stream will be tied to the window of this Activity. 4129 * If the Activity is switched, the stream set here is no longer the 4130 * suggested stream. The client does not need to save and restore the old 4131 * suggested stream value in onPause and onResume. 4132 * 4133 * @param streamType The type of the audio stream whose volume should be 4134 * changed by the hardware volume controls. It is not guaranteed that 4135 * the hardware volume controls will always change this stream's 4136 * volume (for example, if a call is in progress, its stream's volume 4137 * may be changed instead). To reset back to the default, use 4138 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4139 */ 4140 public final void setVolumeControlStream(int streamType) { 4141 getWindow().setVolumeControlStream(streamType); 4142 } 4143 4144 /** 4145 * Gets the suggested audio stream whose volume should be changed by the 4146 * harwdare volume controls. 4147 * 4148 * @return The suggested audio stream type whose volume should be changed by 4149 * the hardware volume controls. 4150 * @see #setVolumeControlStream(int) 4151 */ 4152 public final int getVolumeControlStream() { 4153 return getWindow().getVolumeControlStream(); 4154 } 4155 4156 /** 4157 * Runs the specified action on the UI thread. If the current thread is the UI 4158 * thread, then the action is executed immediately. If the current thread is 4159 * not the UI thread, the action is posted to the event queue of the UI thread. 4160 * 4161 * @param action the action to run on the UI thread 4162 */ 4163 public final void runOnUiThread(Runnable action) { 4164 if (Thread.currentThread() != mUiThread) { 4165 mHandler.post(action); 4166 } else { 4167 action.run(); 4168 } 4169 } 4170 4171 /** 4172 * Standard implementation of 4173 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4174 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4175 * This implementation does nothing and is for 4176 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4177 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4178 * 4179 * @see android.view.LayoutInflater#createView 4180 * @see android.view.Window#getLayoutInflater 4181 */ 4182 public View onCreateView(String name, Context context, AttributeSet attrs) { 4183 return null; 4184 } 4185 4186 /** 4187 * Standard implementation of 4188 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4189 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4190 * This implementation handles <fragment> tags to embed fragments inside 4191 * of the activity. 4192 * 4193 * @see android.view.LayoutInflater#createView 4194 * @see android.view.Window#getLayoutInflater 4195 */ 4196 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4197 if (!"fragment".equals(name)) { 4198 return onCreateView(name, context, attrs); 4199 } 4200 4201 String fname = attrs.getAttributeValue(null, "class"); 4202 TypedArray a = 4203 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4204 if (fname == null) { 4205 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4206 } 4207 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4208 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4209 a.recycle(); 4210 4211 int containerId = parent != null ? parent.getId() : 0; 4212 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4213 throw new IllegalArgumentException(attrs.getPositionDescription() 4214 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4215 } 4216 4217 // If we restored from a previous state, we may already have 4218 // instantiated this fragment from the state and should use 4219 // that instance instead of making a new one. 4220 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4221 if (fragment == null && tag != null) { 4222 fragment = mFragments.findFragmentByTag(tag); 4223 } 4224 if (fragment == null && containerId != View.NO_ID) { 4225 fragment = mFragments.findFragmentById(containerId); 4226 } 4227 4228 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4229 + Integer.toHexString(id) + " fname=" + fname 4230 + " existing=" + fragment); 4231 if (fragment == null) { 4232 fragment = Fragment.instantiate(this, fname); 4233 fragment.mFromLayout = true; 4234 fragment.mFragmentId = id != 0 ? id : containerId; 4235 fragment.mContainerId = containerId; 4236 fragment.mTag = tag; 4237 fragment.mInLayout = true; 4238 fragment.mFragmentManager = mFragments; 4239 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4240 mFragments.addFragment(fragment, true); 4241 4242 } else if (fragment.mInLayout) { 4243 // A fragment already exists and it is not one we restored from 4244 // previous state. 4245 throw new IllegalArgumentException(attrs.getPositionDescription() 4246 + ": Duplicate id 0x" + Integer.toHexString(id) 4247 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4248 + " with another fragment for " + fname); 4249 } else { 4250 // This fragment was retained from a previous instance; get it 4251 // going now. 4252 fragment.mInLayout = true; 4253 // If this fragment is newly instantiated (either right now, or 4254 // from last saved state), then give it the attributes to 4255 // initialize itself. 4256 if (!fragment.mRetaining) { 4257 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4258 } 4259 mFragments.moveToState(fragment); 4260 } 4261 4262 if (fragment.mView == null) { 4263 throw new IllegalStateException("Fragment " + fname 4264 + " did not create a view."); 4265 } 4266 if (id != 0) { 4267 fragment.mView.setId(id); 4268 } 4269 if (fragment.mView.getTag() == null) { 4270 fragment.mView.setTag(tag); 4271 } 4272 return fragment.mView; 4273 } 4274 4275 /** 4276 * Print the Activity's state into the given stream. This gets invoked if 4277 * you run "adb shell dumpsys activity <activity_component_name>". 4278 * 4279 * @param prefix Desired prefix to prepend at each line of output. 4280 * @param fd The raw file descriptor that the dump is being sent to. 4281 * @param writer The PrintWriter to which you should dump your state. This will be 4282 * closed for you after you return. 4283 * @param args additional arguments to the dump request. 4284 */ 4285 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4286 writer.print(prefix); writer.print("Local Activity "); 4287 writer.print(Integer.toHexString(System.identityHashCode(this))); 4288 writer.println(" State:"); 4289 String innerPrefix = prefix + " "; 4290 writer.print(innerPrefix); writer.print("mResumed="); 4291 writer.print(mResumed); writer.print(" mStopped="); 4292 writer.print(mStopped); writer.print(" mFinished="); 4293 writer.println(mFinished); 4294 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4295 writer.println(mLoadersStarted); 4296 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4297 writer.println(mChangingConfigurations); 4298 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4299 writer.println(mCurrentConfig); 4300 if (mLoaderManager != null) { 4301 writer.print(prefix); writer.print("Loader Manager "); 4302 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4303 writer.println(":"); 4304 mLoaderManager.dump(prefix + " ", fd, writer, args); 4305 } 4306 mFragments.dump(prefix, fd, writer, args); 4307 } 4308 4309 /** 4310 * Bit indicating that this activity is "immersive" and should not be 4311 * interrupted by notifications if possible. 4312 * 4313 * This value is initially set by the manifest property 4314 * <code>android:immersive</code> but may be changed at runtime by 4315 * {@link #setImmersive}. 4316 * 4317 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4318 * @hide 4319 */ 4320 public boolean isImmersive() { 4321 try { 4322 return ActivityManagerNative.getDefault().isImmersive(mToken); 4323 } catch (RemoteException e) { 4324 return false; 4325 } 4326 } 4327 4328 /** 4329 * Adjust the current immersive mode setting. 4330 * 4331 * Note that changing this value will have no effect on the activity's 4332 * {@link android.content.pm.ActivityInfo} structure; that is, if 4333 * <code>android:immersive</code> is set to <code>true</code> 4334 * in the application's manifest entry for this activity, the {@link 4335 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4336 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4337 * FLAG_IMMERSIVE} bit set. 4338 * 4339 * @see #isImmersive 4340 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4341 * @hide 4342 */ 4343 public void setImmersive(boolean i) { 4344 try { 4345 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4346 } catch (RemoteException e) { 4347 // pass 4348 } 4349 } 4350 4351 /** 4352 * Start an action mode. 4353 * 4354 * @param callback Callback that will manage lifecycle events for this context mode 4355 * @return The ContextMode that was started, or null if it was canceled 4356 * 4357 * @see ActionMode 4358 */ 4359 public ActionMode startActionMode(ActionMode.Callback callback) { 4360 return mWindow.getDecorView().startActionMode(callback); 4361 } 4362 4363 /** 4364 * Give the Activity a chance to control the UI for an action mode requested 4365 * by the system. 4366 * 4367 * <p>Note: If you are looking for a notification callback that an action mode 4368 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4369 * 4370 * @param callback The callback that should control the new action mode 4371 * @return The new action mode, or <code>null</code> if the activity does not want to 4372 * provide special handling for this action mode. (It will be handled by the system.) 4373 */ 4374 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4375 initActionBar(); 4376 if (mActionBar != null) { 4377 return mActionBar.startActionMode(callback); 4378 } 4379 return null; 4380 } 4381 4382 /** 4383 * Notifies the Activity that an action mode has been started. 4384 * Activity subclasses overriding this method should call the superclass implementation. 4385 * 4386 * @param mode The new action mode. 4387 */ 4388 public void onActionModeStarted(ActionMode mode) { 4389 } 4390 4391 /** 4392 * Notifies the activity that an action mode has finished. 4393 * Activity subclasses overriding this method should call the superclass implementation. 4394 * 4395 * @param mode The action mode that just finished. 4396 */ 4397 public void onActionModeFinished(ActionMode mode) { 4398 } 4399 4400 // ------------------ Internal API ------------------ 4401 4402 final void setParent(Activity parent) { 4403 mParent = parent; 4404 } 4405 4406 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4407 Application application, Intent intent, ActivityInfo info, CharSequence title, 4408 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4409 Configuration config) { 4410 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4411 lastNonConfigurationInstances, config); 4412 } 4413 4414 final void attach(Context context, ActivityThread aThread, 4415 Instrumentation instr, IBinder token, int ident, 4416 Application application, Intent intent, ActivityInfo info, 4417 CharSequence title, Activity parent, String id, 4418 NonConfigurationInstances lastNonConfigurationInstances, 4419 Configuration config) { 4420 attachBaseContext(context); 4421 4422 mFragments.attachActivity(this); 4423 4424 mWindow = PolicyManager.makeNewWindow(this); 4425 mWindow.setCallback(this); 4426 mWindow.getLayoutInflater().setPrivateFactory(this); 4427 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4428 mWindow.setSoftInputMode(info.softInputMode); 4429 } 4430 if (info.uiOptions != 0) { 4431 mWindow.setUiOptions(info.uiOptions); 4432 } 4433 mUiThread = Thread.currentThread(); 4434 4435 mMainThread = aThread; 4436 mInstrumentation = instr; 4437 mToken = token; 4438 mIdent = ident; 4439 mApplication = application; 4440 mIntent = intent; 4441 mComponent = intent.getComponent(); 4442 mActivityInfo = info; 4443 mTitle = title; 4444 mParent = parent; 4445 mEmbeddedID = id; 4446 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4447 4448 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4449 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4450 if (mParent != null) { 4451 mWindow.setContainer(mParent.getWindow()); 4452 } 4453 mWindowManager = mWindow.getWindowManager(); 4454 mCurrentConfig = config; 4455 } 4456 4457 final IBinder getActivityToken() { 4458 return mParent != null ? mParent.getActivityToken() : mToken; 4459 } 4460 4461 final void performCreate(Bundle icicle) { 4462 onCreate(icicle); 4463 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4464 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4465 mFragments.dispatchActivityCreated(); 4466 } 4467 4468 final void performStart() { 4469 mFragments.noteStateNotSaved(); 4470 mCalled = false; 4471 mFragments.execPendingActions(); 4472 mInstrumentation.callActivityOnStart(this); 4473 if (!mCalled) { 4474 throw new SuperNotCalledException( 4475 "Activity " + mComponent.toShortString() + 4476 " did not call through to super.onStart()"); 4477 } 4478 mFragments.dispatchStart(); 4479 if (mAllLoaderManagers != null) { 4480 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4481 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 4482 lm.finishRetain(); 4483 lm.doReportStart(); 4484 } 4485 } 4486 } 4487 4488 final void performRestart() { 4489 mFragments.noteStateNotSaved(); 4490 4491 if (mStopped) { 4492 mStopped = false; 4493 if (mToken != null && mParent == null) { 4494 WindowManagerImpl.getDefault().setStoppedState(mToken, false); 4495 } 4496 4497 synchronized (mManagedCursors) { 4498 final int N = mManagedCursors.size(); 4499 for (int i=0; i<N; i++) { 4500 ManagedCursor mc = mManagedCursors.get(i); 4501 if (mc.mReleased || mc.mUpdated) { 4502 if (!mc.mCursor.requery()) { 4503 if (getApplicationInfo().targetSdkVersion 4504 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 4505 throw new IllegalStateException( 4506 "trying to requery an already closed cursor " 4507 + mc.mCursor); 4508 } 4509 } 4510 mc.mReleased = false; 4511 mc.mUpdated = false; 4512 } 4513 } 4514 } 4515 4516 mCalled = false; 4517 mInstrumentation.callActivityOnRestart(this); 4518 if (!mCalled) { 4519 throw new SuperNotCalledException( 4520 "Activity " + mComponent.toShortString() + 4521 " did not call through to super.onRestart()"); 4522 } 4523 performStart(); 4524 } 4525 } 4526 4527 final void performResume() { 4528 performRestart(); 4529 4530 mFragments.execPendingActions(); 4531 4532 mLastNonConfigurationInstances = null; 4533 4534 mCalled = false; 4535 // mResumed is set by the instrumentation 4536 mInstrumentation.callActivityOnResume(this); 4537 if (!mCalled) { 4538 throw new SuperNotCalledException( 4539 "Activity " + mComponent.toShortString() + 4540 " did not call through to super.onResume()"); 4541 } 4542 4543 // Now really resume, and install the current status bar and menu. 4544 mCalled = false; 4545 4546 mFragments.dispatchResume(); 4547 mFragments.execPendingActions(); 4548 4549 onPostResume(); 4550 if (!mCalled) { 4551 throw new SuperNotCalledException( 4552 "Activity " + mComponent.toShortString() + 4553 " did not call through to super.onPostResume()"); 4554 } 4555 } 4556 4557 final void performPause() { 4558 mFragments.dispatchPause(); 4559 mCalled = false; 4560 onPause(); 4561 mResumed = false; 4562 if (!mCalled && getApplicationInfo().targetSdkVersion 4563 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4564 throw new SuperNotCalledException( 4565 "Activity " + mComponent.toShortString() + 4566 " did not call through to super.onPause()"); 4567 } 4568 mResumed = false; 4569 } 4570 4571 final void performUserLeaving() { 4572 onUserInteraction(); 4573 onUserLeaveHint(); 4574 } 4575 4576 final void performStop() { 4577 if (mLoadersStarted) { 4578 mLoadersStarted = false; 4579 if (mLoaderManager != null) { 4580 if (!mChangingConfigurations) { 4581 mLoaderManager.doStop(); 4582 } else { 4583 mLoaderManager.doRetain(); 4584 } 4585 } 4586 } 4587 4588 if (!mStopped) { 4589 if (mWindow != null) { 4590 mWindow.closeAllPanels(); 4591 } 4592 4593 if (mToken != null && mParent == null) { 4594 WindowManagerImpl.getDefault().setStoppedState(mToken, true); 4595 } 4596 4597 mFragments.dispatchStop(); 4598 4599 mCalled = false; 4600 mInstrumentation.callActivityOnStop(this); 4601 if (!mCalled) { 4602 throw new SuperNotCalledException( 4603 "Activity " + mComponent.toShortString() + 4604 " did not call through to super.onStop()"); 4605 } 4606 4607 synchronized (mManagedCursors) { 4608 final int N = mManagedCursors.size(); 4609 for (int i=0; i<N; i++) { 4610 ManagedCursor mc = mManagedCursors.get(i); 4611 if (!mc.mReleased) { 4612 mc.mCursor.deactivate(); 4613 mc.mReleased = true; 4614 } 4615 } 4616 } 4617 4618 mStopped = true; 4619 } 4620 mResumed = false; 4621 } 4622 4623 final void performDestroy() { 4624 mWindow.destroy(); 4625 mFragments.dispatchDestroy(); 4626 onDestroy(); 4627 if (mLoaderManager != null) { 4628 mLoaderManager.doDestroy(); 4629 } 4630 } 4631 4632 /** 4633 * @hide 4634 */ 4635 public final boolean isResumed() { 4636 return mResumed; 4637 } 4638 4639 void dispatchActivityResult(String who, int requestCode, 4640 int resultCode, Intent data) { 4641 if (false) Log.v( 4642 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4643 + ", resCode=" + resultCode + ", data=" + data); 4644 mFragments.noteStateNotSaved(); 4645 if (who == null) { 4646 onActivityResult(requestCode, resultCode, data); 4647 } else { 4648 Fragment frag = mFragments.findFragmentByWho(who); 4649 if (frag != null) { 4650 frag.onActivityResult(requestCode, resultCode, data); 4651 } 4652 } 4653 } 4654} 4655