Activity.java revision a5445d3bbd7985ffeeeabc3813bec3d1e0463cea
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 * @param uri The URI of the content provider to query. 1642 * @param projection List of columns to return. 1643 * @param selection SQL WHERE clause. 1644 * @param sortOrder SQL ORDER BY clause. 1645 * 1646 * @return The Cursor that was returned by query(). 1647 * 1648 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1649 * @see #startManagingCursor 1650 * @hide 1651 * 1652 * @deprecated Use {@link CursorLoader} instead. 1653 */ 1654 @Deprecated 1655 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1656 String sortOrder) { 1657 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1658 if (c != null) { 1659 startManagingCursor(c); 1660 } 1661 return c; 1662 } 1663 1664 /** 1665 * Wrapper around 1666 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1667 * that gives the resulting {@link Cursor} to call 1668 * {@link #startManagingCursor} so that the activity will manage its 1669 * lifecycle for you. 1670 * 1671 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1672 * or later, consider instead using {@link LoaderManager} instead, available 1673 * via {@link #getLoaderManager()}.</em> 1674 * 1675 * @param uri The URI of the content provider to query. 1676 * @param projection List of columns to return. 1677 * @param selection SQL WHERE clause. 1678 * @param selectionArgs The arguments to selection, if any ?s are pesent 1679 * @param sortOrder SQL ORDER BY clause. 1680 * 1681 * @return The Cursor that was returned by query(). 1682 * 1683 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1684 * @see #startManagingCursor 1685 * 1686 * @deprecated Use {@link CursorLoader} instead. 1687 */ 1688 @Deprecated 1689 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1690 String[] selectionArgs, String sortOrder) { 1691 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1692 if (c != null) { 1693 startManagingCursor(c); 1694 } 1695 return c; 1696 } 1697 1698 /** 1699 * This method allows the activity to take care of managing the given 1700 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1701 * That is, when the activity is stopped it will automatically call 1702 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1703 * it will call {@link Cursor#requery} for you. When the activity is 1704 * destroyed, all managed Cursors will be closed automatically. 1705 * 1706 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1707 * or later, consider instead using {@link LoaderManager} instead, available 1708 * via {@link #getLoaderManager()}.</em> 1709 * 1710 * @param c The Cursor to be managed. 1711 * 1712 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1713 * @see #stopManagingCursor 1714 * 1715 * @deprecated Use the new {@link android.content.CursorLoader} class with 1716 * {@link LoaderManager} instead; this is also 1717 * available on older platforms through the Android compatibility package. 1718 */ 1719 @Deprecated 1720 public void startManagingCursor(Cursor c) { 1721 synchronized (mManagedCursors) { 1722 mManagedCursors.add(new ManagedCursor(c)); 1723 } 1724 } 1725 1726 /** 1727 * Given a Cursor that was previously given to 1728 * {@link #startManagingCursor}, stop the activity's management of that 1729 * cursor. 1730 * 1731 * @param c The Cursor that was being managed. 1732 * 1733 * @see #startManagingCursor 1734 * 1735 * @deprecated Use the new {@link android.content.CursorLoader} class with 1736 * {@link LoaderManager} instead; this is also 1737 * available on older platforms through the Android compatibility package. 1738 */ 1739 @Deprecated 1740 public void stopManagingCursor(Cursor c) { 1741 synchronized (mManagedCursors) { 1742 final int N = mManagedCursors.size(); 1743 for (int i=0; i<N; i++) { 1744 ManagedCursor mc = mManagedCursors.get(i); 1745 if (mc.mCursor == c) { 1746 mManagedCursors.remove(i); 1747 break; 1748 } 1749 } 1750 } 1751 } 1752 1753 /** 1754 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1755 * this is a no-op. 1756 * @hide 1757 */ 1758 @Deprecated 1759 public void setPersistent(boolean isPersistent) { 1760 } 1761 1762 /** 1763 * Finds a view that was identified by the id attribute from the XML that 1764 * was processed in {@link #onCreate}. 1765 * 1766 * @return The view if found or null otherwise. 1767 */ 1768 public View findViewById(int id) { 1769 return getWindow().findViewById(id); 1770 } 1771 1772 /** 1773 * Retrieve a reference to this activity's ActionBar. 1774 * 1775 * @return The Activity's ActionBar, or null if it does not have one. 1776 */ 1777 public ActionBar getActionBar() { 1778 initActionBar(); 1779 return mActionBar; 1780 } 1781 1782 /** 1783 * Creates a new ActionBar, locates the inflated ActionBarView, 1784 * initializes the ActionBar with the view, and sets mActionBar. 1785 */ 1786 private void initActionBar() { 1787 Window window = getWindow(); 1788 1789 // Initializing the window decor can change window feature flags. 1790 // Make sure that we have the correct set before performing the test below. 1791 window.getDecorView(); 1792 1793 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1794 return; 1795 } 1796 1797 mActionBar = new ActionBarImpl(this); 1798 } 1799 1800 /** 1801 * Set the activity content from a layout resource. The resource will be 1802 * inflated, adding all top-level views to the activity. 1803 * 1804 * @param layoutResID Resource ID to be inflated. 1805 * 1806 * @see #setContentView(android.view.View) 1807 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1808 */ 1809 public void setContentView(int layoutResID) { 1810 getWindow().setContentView(layoutResID); 1811 initActionBar(); 1812 } 1813 1814 /** 1815 * Set the activity content to an explicit view. This view is placed 1816 * directly into the activity's view hierarchy. It can itself be a complex 1817 * view hierarchy. When calling this method, the layout parameters of the 1818 * specified view are ignored. Both the width and the height of the view are 1819 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1820 * your own layout parameters, invoke 1821 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1822 * instead. 1823 * 1824 * @param view The desired content to display. 1825 * 1826 * @see #setContentView(int) 1827 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1828 */ 1829 public void setContentView(View view) { 1830 getWindow().setContentView(view); 1831 initActionBar(); 1832 } 1833 1834 /** 1835 * Set the activity content to an explicit view. This view is placed 1836 * directly into the activity's view hierarchy. It can itself be a complex 1837 * view hierarchy. 1838 * 1839 * @param view The desired content to display. 1840 * @param params Layout parameters for the view. 1841 * 1842 * @see #setContentView(android.view.View) 1843 * @see #setContentView(int) 1844 */ 1845 public void setContentView(View view, ViewGroup.LayoutParams params) { 1846 getWindow().setContentView(view, params); 1847 initActionBar(); 1848 } 1849 1850 /** 1851 * Add an additional content view to the activity. Added after any existing 1852 * ones in the activity -- existing views are NOT removed. 1853 * 1854 * @param view The desired content to display. 1855 * @param params Layout parameters for the view. 1856 */ 1857 public void addContentView(View view, ViewGroup.LayoutParams params) { 1858 getWindow().addContentView(view, params); 1859 initActionBar(); 1860 } 1861 1862 /** 1863 * Sets whether this activity is finished when touched outside its window's 1864 * bounds. 1865 */ 1866 public void setFinishOnTouchOutside(boolean finish) { 1867 mWindow.setCloseOnTouchOutside(finish); 1868 } 1869 1870 /** 1871 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1872 * keys. 1873 * 1874 * @see #setDefaultKeyMode 1875 */ 1876 static public final int DEFAULT_KEYS_DISABLE = 0; 1877 /** 1878 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1879 * key handling. 1880 * 1881 * @see #setDefaultKeyMode 1882 */ 1883 static public final int DEFAULT_KEYS_DIALER = 1; 1884 /** 1885 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1886 * default key handling. 1887 * 1888 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 1889 * 1890 * @see #setDefaultKeyMode 1891 */ 1892 static public final int DEFAULT_KEYS_SHORTCUT = 2; 1893 /** 1894 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1895 * will start an application-defined search. (If the application or activity does not 1896 * actually define a search, the the keys will be ignored.) 1897 * 1898 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1899 * 1900 * @see #setDefaultKeyMode 1901 */ 1902 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 1903 1904 /** 1905 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 1906 * will start a global search (typically web search, but some platforms may define alternate 1907 * methods for global search) 1908 * 1909 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 1910 * 1911 * @see #setDefaultKeyMode 1912 */ 1913 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 1914 1915 /** 1916 * Select the default key handling for this activity. This controls what 1917 * will happen to key events that are not otherwise handled. The default 1918 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 1919 * floor. Other modes allow you to launch the dialer 1920 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 1921 * menu without requiring the menu key be held down 1922 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 1923 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 1924 * 1925 * <p>Note that the mode selected here does not impact the default 1926 * handling of system keys, such as the "back" and "menu" keys, and your 1927 * activity and its views always get a first chance to receive and handle 1928 * all application keys. 1929 * 1930 * @param mode The desired default key mode constant. 1931 * 1932 * @see #DEFAULT_KEYS_DISABLE 1933 * @see #DEFAULT_KEYS_DIALER 1934 * @see #DEFAULT_KEYS_SHORTCUT 1935 * @see #DEFAULT_KEYS_SEARCH_LOCAL 1936 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 1937 * @see #onKeyDown 1938 */ 1939 public final void setDefaultKeyMode(int mode) { 1940 mDefaultKeyMode = mode; 1941 1942 // Some modes use a SpannableStringBuilder to track & dispatch input events 1943 // This list must remain in sync with the switch in onKeyDown() 1944 switch (mode) { 1945 case DEFAULT_KEYS_DISABLE: 1946 case DEFAULT_KEYS_SHORTCUT: 1947 mDefaultKeySsb = null; // not used in these modes 1948 break; 1949 case DEFAULT_KEYS_DIALER: 1950 case DEFAULT_KEYS_SEARCH_LOCAL: 1951 case DEFAULT_KEYS_SEARCH_GLOBAL: 1952 mDefaultKeySsb = new SpannableStringBuilder(); 1953 Selection.setSelection(mDefaultKeySsb,0); 1954 break; 1955 default: 1956 throw new IllegalArgumentException(); 1957 } 1958 } 1959 1960 /** 1961 * Called when a key was pressed down and not handled by any of the views 1962 * inside of the activity. So, for example, key presses while the cursor 1963 * is inside a TextView will not trigger the event (unless it is a navigation 1964 * to another object) because TextView handles its own key presses. 1965 * 1966 * <p>If the focused view didn't want this event, this method is called. 1967 * 1968 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 1969 * by calling {@link #onBackPressed()}, though the behavior varies based 1970 * on the application compatibility mode: for 1971 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 1972 * it will set up the dispatch to call {@link #onKeyUp} where the action 1973 * will be performed; for earlier applications, it will perform the 1974 * action immediately in on-down, as those versions of the platform 1975 * behaved. 1976 * 1977 * <p>Other additional default key handling may be performed 1978 * if configured with {@link #setDefaultKeyMode}. 1979 * 1980 * @return Return <code>true</code> to prevent this event from being propagated 1981 * further, or <code>false</code> to indicate that you have not handled 1982 * this event and it should continue to be propagated. 1983 * @see #onKeyUp 1984 * @see android.view.KeyEvent 1985 */ 1986 public boolean onKeyDown(int keyCode, KeyEvent event) { 1987 if (keyCode == KeyEvent.KEYCODE_BACK) { 1988 if (getApplicationInfo().targetSdkVersion 1989 >= Build.VERSION_CODES.ECLAIR) { 1990 event.startTracking(); 1991 } else { 1992 onBackPressed(); 1993 } 1994 return true; 1995 } 1996 1997 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 1998 return false; 1999 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2000 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2001 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2002 return true; 2003 } 2004 return false; 2005 } else { 2006 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2007 boolean clearSpannable = false; 2008 boolean handled; 2009 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2010 clearSpannable = true; 2011 handled = false; 2012 } else { 2013 handled = TextKeyListener.getInstance().onKeyDown( 2014 null, mDefaultKeySsb, keyCode, event); 2015 if (handled && mDefaultKeySsb.length() > 0) { 2016 // something useable has been typed - dispatch it now. 2017 2018 final String str = mDefaultKeySsb.toString(); 2019 clearSpannable = true; 2020 2021 switch (mDefaultKeyMode) { 2022 case DEFAULT_KEYS_DIALER: 2023 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2024 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2025 startActivity(intent); 2026 break; 2027 case DEFAULT_KEYS_SEARCH_LOCAL: 2028 startSearch(str, false, null, false); 2029 break; 2030 case DEFAULT_KEYS_SEARCH_GLOBAL: 2031 startSearch(str, false, null, true); 2032 break; 2033 } 2034 } 2035 } 2036 if (clearSpannable) { 2037 mDefaultKeySsb.clear(); 2038 mDefaultKeySsb.clearSpans(); 2039 Selection.setSelection(mDefaultKeySsb,0); 2040 } 2041 return handled; 2042 } 2043 } 2044 2045 /** 2046 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2047 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2048 * the event). 2049 */ 2050 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2051 return false; 2052 } 2053 2054 /** 2055 * Called when a key was released and not handled by any of the views 2056 * inside of the activity. So, for example, key presses while the cursor 2057 * is inside a TextView will not trigger the event (unless it is a navigation 2058 * to another object) because TextView handles its own key presses. 2059 * 2060 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2061 * and go back. 2062 * 2063 * @return Return <code>true</code> to prevent this event from being propagated 2064 * further, or <code>false</code> to indicate that you have not handled 2065 * this event and it should continue to be propagated. 2066 * @see #onKeyDown 2067 * @see KeyEvent 2068 */ 2069 public boolean onKeyUp(int keyCode, KeyEvent event) { 2070 if (getApplicationInfo().targetSdkVersion 2071 >= Build.VERSION_CODES.ECLAIR) { 2072 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2073 && !event.isCanceled()) { 2074 onBackPressed(); 2075 return true; 2076 } 2077 } 2078 return false; 2079 } 2080 2081 /** 2082 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2083 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2084 * the event). 2085 */ 2086 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2087 return false; 2088 } 2089 2090 /** 2091 * Called when the activity has detected the user's press of the back 2092 * key. The default implementation simply finishes the current activity, 2093 * but you can override this to do whatever you want. 2094 */ 2095 public void onBackPressed() { 2096 if (!mFragments.popBackStackImmediate()) { 2097 finish(); 2098 } 2099 } 2100 2101 /** 2102 * Called when a key shortcut event is not handled by any of the views in the Activity. 2103 * Override this method to implement global key shortcuts for the Activity. 2104 * Key shortcuts can also be implemented by setting the 2105 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2106 * 2107 * @param keyCode The value in event.getKeyCode(). 2108 * @param event Description of the key event. 2109 * @return True if the key shortcut was handled. 2110 */ 2111 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2112 return false; 2113 } 2114 2115 /** 2116 * Called when a touch screen event was not handled by any of the views 2117 * under it. This is most useful to process touch events that happen 2118 * outside of your window bounds, where there is no view to receive it. 2119 * 2120 * @param event The touch screen event being processed. 2121 * 2122 * @return Return true if you have consumed the event, false if you haven't. 2123 * The default implementation always returns false. 2124 */ 2125 public boolean onTouchEvent(MotionEvent event) { 2126 if (mWindow.shouldCloseOnTouch(this, event)) { 2127 finish(); 2128 return true; 2129 } 2130 2131 return false; 2132 } 2133 2134 /** 2135 * Called when the trackball was moved and not handled by any of the 2136 * views inside of the activity. So, for example, if the trackball moves 2137 * while focus is on a button, you will receive a call here because 2138 * buttons do not normally do anything with trackball events. The call 2139 * here happens <em>before</em> trackball movements are converted to 2140 * DPAD key events, which then get sent back to the view hierarchy, and 2141 * will be processed at the point for things like focus navigation. 2142 * 2143 * @param event The trackball event being processed. 2144 * 2145 * @return Return true if you have consumed the event, false if you haven't. 2146 * The default implementation always returns false. 2147 */ 2148 public boolean onTrackballEvent(MotionEvent event) { 2149 return false; 2150 } 2151 2152 /** 2153 * Called when a generic motion event was not handled by any of the 2154 * views inside of the activity. 2155 * <p> 2156 * Generic motion events describe joystick movements, mouse hovers, track pad 2157 * touches, scroll wheel movements and other input events. The 2158 * {@link MotionEvent#getSource() source} of the motion event specifies 2159 * the class of input that was received. Implementations of this method 2160 * must examine the bits in the source before processing the event. 2161 * The following code example shows how this is done. 2162 * </p><p> 2163 * Generic motion events with source class 2164 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2165 * are delivered to the view under the pointer. All other generic motion events are 2166 * delivered to the focused view. 2167 * </p><p> 2168 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2169 * handle this event. 2170 * </p> 2171 * 2172 * @param event The generic motion event being processed. 2173 * 2174 * @return Return true if you have consumed the event, false if you haven't. 2175 * The default implementation always returns false. 2176 */ 2177 public boolean onGenericMotionEvent(MotionEvent event) { 2178 return false; 2179 } 2180 2181 /** 2182 * Called whenever a key, touch, or trackball event is dispatched to the 2183 * activity. Implement this method if you wish to know that the user has 2184 * interacted with the device in some way while your activity is running. 2185 * This callback and {@link #onUserLeaveHint} are intended to help 2186 * activities manage status bar notifications intelligently; specifically, 2187 * for helping activities determine the proper time to cancel a notfication. 2188 * 2189 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2190 * be accompanied by calls to {@link #onUserInteraction}. This 2191 * ensures that your activity will be told of relevant user activity such 2192 * as pulling down the notification pane and touching an item there. 2193 * 2194 * <p>Note that this callback will be invoked for the touch down action 2195 * that begins a touch gesture, but may not be invoked for the touch-moved 2196 * and touch-up actions that follow. 2197 * 2198 * @see #onUserLeaveHint() 2199 */ 2200 public void onUserInteraction() { 2201 } 2202 2203 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2204 // Update window manager if: we have a view, that view is 2205 // attached to its parent (which will be a RootView), and 2206 // this activity is not embedded. 2207 if (mParent == null) { 2208 View decor = mDecor; 2209 if (decor != null && decor.getParent() != null) { 2210 getWindowManager().updateViewLayout(decor, params); 2211 } 2212 } 2213 } 2214 2215 public void onContentChanged() { 2216 } 2217 2218 /** 2219 * Called when the current {@link Window} of the activity gains or loses 2220 * focus. This is the best indicator of whether this activity is visible 2221 * to the user. The default implementation clears the key tracking 2222 * state, so should always be called. 2223 * 2224 * <p>Note that this provides information about global focus state, which 2225 * is managed independently of activity lifecycles. As such, while focus 2226 * changes will generally have some relation to lifecycle changes (an 2227 * activity that is stopped will not generally get window focus), you 2228 * should not rely on any particular order between the callbacks here and 2229 * those in the other lifecycle methods such as {@link #onResume}. 2230 * 2231 * <p>As a general rule, however, a resumed activity will have window 2232 * focus... unless it has displayed other dialogs or popups that take 2233 * input focus, in which case the activity itself will not have focus 2234 * when the other windows have it. Likewise, the system may display 2235 * system-level windows (such as the status bar notification panel or 2236 * a system alert) which will temporarily take window input focus without 2237 * pausing the foreground activity. 2238 * 2239 * @param hasFocus Whether the window of this activity has focus. 2240 * 2241 * @see #hasWindowFocus() 2242 * @see #onResume 2243 * @see View#onWindowFocusChanged(boolean) 2244 */ 2245 public void onWindowFocusChanged(boolean hasFocus) { 2246 } 2247 2248 /** 2249 * Called when the main window associated with the activity has been 2250 * attached to the window manager. 2251 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2252 * for more information. 2253 * @see View#onAttachedToWindow 2254 */ 2255 public void onAttachedToWindow() { 2256 } 2257 2258 /** 2259 * Called when the main window associated with the activity has been 2260 * detached from the window manager. 2261 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2262 * for more information. 2263 * @see View#onDetachedFromWindow 2264 */ 2265 public void onDetachedFromWindow() { 2266 } 2267 2268 /** 2269 * Returns true if this activity's <em>main</em> window currently has window focus. 2270 * Note that this is not the same as the view itself having focus. 2271 * 2272 * @return True if this activity's main window currently has window focus. 2273 * 2274 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2275 */ 2276 public boolean hasWindowFocus() { 2277 Window w = getWindow(); 2278 if (w != null) { 2279 View d = w.getDecorView(); 2280 if (d != null) { 2281 return d.hasWindowFocus(); 2282 } 2283 } 2284 return false; 2285 } 2286 2287 /** 2288 * Called to process key events. You can override this to intercept all 2289 * key events before they are dispatched to the window. Be sure to call 2290 * this implementation for key events that should be handled normally. 2291 * 2292 * @param event The key event. 2293 * 2294 * @return boolean Return true if this event was consumed. 2295 */ 2296 public boolean dispatchKeyEvent(KeyEvent event) { 2297 onUserInteraction(); 2298 Window win = getWindow(); 2299 if (win.superDispatchKeyEvent(event)) { 2300 return true; 2301 } 2302 View decor = mDecor; 2303 if (decor == null) decor = win.getDecorView(); 2304 return event.dispatch(this, decor != null 2305 ? decor.getKeyDispatcherState() : null, this); 2306 } 2307 2308 /** 2309 * Called to process a key shortcut event. 2310 * You can override this to intercept all key shortcut events before they are 2311 * dispatched to the window. Be sure to call this implementation for key shortcut 2312 * events that should be handled normally. 2313 * 2314 * @param event The key shortcut event. 2315 * @return True if this event was consumed. 2316 */ 2317 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2318 onUserInteraction(); 2319 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2320 return true; 2321 } 2322 return onKeyShortcut(event.getKeyCode(), event); 2323 } 2324 2325 /** 2326 * Called to process touch screen events. You can override this to 2327 * intercept all touch screen events before they are dispatched to the 2328 * window. Be sure to call this implementation for touch screen events 2329 * that should be handled normally. 2330 * 2331 * @param ev The touch screen event. 2332 * 2333 * @return boolean Return true if this event was consumed. 2334 */ 2335 public boolean dispatchTouchEvent(MotionEvent ev) { 2336 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2337 onUserInteraction(); 2338 } 2339 if (getWindow().superDispatchTouchEvent(ev)) { 2340 return true; 2341 } 2342 return onTouchEvent(ev); 2343 } 2344 2345 /** 2346 * Called to process trackball events. You can override this to 2347 * intercept all trackball events before they are dispatched to the 2348 * window. Be sure to call this implementation for trackball events 2349 * that should be handled normally. 2350 * 2351 * @param ev The trackball event. 2352 * 2353 * @return boolean Return true if this event was consumed. 2354 */ 2355 public boolean dispatchTrackballEvent(MotionEvent ev) { 2356 onUserInteraction(); 2357 if (getWindow().superDispatchTrackballEvent(ev)) { 2358 return true; 2359 } 2360 return onTrackballEvent(ev); 2361 } 2362 2363 /** 2364 * Called to process generic motion events. You can override this to 2365 * intercept all generic motion events before they are dispatched to the 2366 * window. Be sure to call this implementation for generic motion events 2367 * that should be handled normally. 2368 * 2369 * @param ev The generic motion event. 2370 * 2371 * @return boolean Return true if this event was consumed. 2372 */ 2373 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2374 onUserInteraction(); 2375 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2376 return true; 2377 } 2378 return onGenericMotionEvent(ev); 2379 } 2380 2381 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2382 event.setClassName(getClass().getName()); 2383 event.setPackageName(getPackageName()); 2384 2385 LayoutParams params = getWindow().getAttributes(); 2386 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2387 (params.height == LayoutParams.MATCH_PARENT); 2388 event.setFullScreen(isFullScreen); 2389 2390 CharSequence title = getTitle(); 2391 if (!TextUtils.isEmpty(title)) { 2392 event.getText().add(title); 2393 } 2394 2395 return true; 2396 } 2397 2398 /** 2399 * Default implementation of 2400 * {@link android.view.Window.Callback#onCreatePanelView} 2401 * for activities. This 2402 * simply returns null so that all panel sub-windows will have the default 2403 * menu behavior. 2404 */ 2405 public View onCreatePanelView(int featureId) { 2406 return null; 2407 } 2408 2409 /** 2410 * Default implementation of 2411 * {@link android.view.Window.Callback#onCreatePanelMenu} 2412 * for activities. This calls through to the new 2413 * {@link #onCreateOptionsMenu} method for the 2414 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2415 * so that subclasses of Activity don't need to deal with feature codes. 2416 */ 2417 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2418 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2419 boolean show = onCreateOptionsMenu(menu); 2420 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2421 return show; 2422 } 2423 return false; 2424 } 2425 2426 /** 2427 * Default implementation of 2428 * {@link android.view.Window.Callback#onPreparePanel} 2429 * for activities. This 2430 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2431 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2432 * panel, so that subclasses of 2433 * Activity don't need to deal with feature codes. 2434 */ 2435 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2436 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2437 boolean goforit = onPrepareOptionsMenu(menu); 2438 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2439 return goforit && menu.hasVisibleItems(); 2440 } 2441 return true; 2442 } 2443 2444 /** 2445 * {@inheritDoc} 2446 * 2447 * @return The default implementation returns true. 2448 */ 2449 public boolean onMenuOpened(int featureId, Menu menu) { 2450 if (featureId == Window.FEATURE_ACTION_BAR) { 2451 initActionBar(); 2452 if (mActionBar != null) { 2453 mActionBar.dispatchMenuVisibilityChanged(true); 2454 } else { 2455 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2456 } 2457 } 2458 return true; 2459 } 2460 2461 /** 2462 * Default implementation of 2463 * {@link android.view.Window.Callback#onMenuItemSelected} 2464 * for activities. This calls through to the new 2465 * {@link #onOptionsItemSelected} method for the 2466 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2467 * panel, so that subclasses of 2468 * Activity don't need to deal with feature codes. 2469 */ 2470 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2471 switch (featureId) { 2472 case Window.FEATURE_OPTIONS_PANEL: 2473 // Put event logging here so it gets called even if subclass 2474 // doesn't call through to superclass's implmeentation of each 2475 // of these methods below 2476 EventLog.writeEvent(50000, 0, item.getTitleCondensed()); 2477 if (onOptionsItemSelected(item)) { 2478 return true; 2479 } 2480 return mFragments.dispatchOptionsItemSelected(item); 2481 2482 case Window.FEATURE_CONTEXT_MENU: 2483 EventLog.writeEvent(50000, 1, item.getTitleCondensed()); 2484 if (onContextItemSelected(item)) { 2485 return true; 2486 } 2487 return mFragments.dispatchContextItemSelected(item); 2488 2489 default: 2490 return false; 2491 } 2492 } 2493 2494 /** 2495 * Default implementation of 2496 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2497 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2498 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2499 * so that subclasses of Activity don't need to deal with feature codes. 2500 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2501 * {@link #onContextMenuClosed(Menu)} will be called. 2502 */ 2503 public void onPanelClosed(int featureId, Menu menu) { 2504 switch (featureId) { 2505 case Window.FEATURE_OPTIONS_PANEL: 2506 mFragments.dispatchOptionsMenuClosed(menu); 2507 onOptionsMenuClosed(menu); 2508 break; 2509 2510 case Window.FEATURE_CONTEXT_MENU: 2511 onContextMenuClosed(menu); 2512 break; 2513 2514 case Window.FEATURE_ACTION_BAR: 2515 initActionBar(); 2516 mActionBar.dispatchMenuVisibilityChanged(false); 2517 break; 2518 } 2519 } 2520 2521 /** 2522 * Declare that the options menu has changed, so should be recreated. 2523 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2524 * time it needs to be displayed. 2525 */ 2526 public void invalidateOptionsMenu() { 2527 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2528 } 2529 2530 /** 2531 * Initialize the contents of the Activity's standard options menu. You 2532 * should place your menu items in to <var>menu</var>. 2533 * 2534 * <p>This is only called once, the first time the options menu is 2535 * displayed. To update the menu every time it is displayed, see 2536 * {@link #onPrepareOptionsMenu}. 2537 * 2538 * <p>The default implementation populates the menu with standard system 2539 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2540 * they will be correctly ordered with application-defined menu items. 2541 * Deriving classes should always call through to the base implementation. 2542 * 2543 * <p>You can safely hold on to <var>menu</var> (and any items created 2544 * from it), making modifications to it as desired, until the next 2545 * time onCreateOptionsMenu() is called. 2546 * 2547 * <p>When you add items to the menu, you can implement the Activity's 2548 * {@link #onOptionsItemSelected} method to handle them there. 2549 * 2550 * @param menu The options menu in which you place your items. 2551 * 2552 * @return You must return true for the menu to be displayed; 2553 * if you return false it will not be shown. 2554 * 2555 * @see #onPrepareOptionsMenu 2556 * @see #onOptionsItemSelected 2557 */ 2558 public boolean onCreateOptionsMenu(Menu menu) { 2559 if (mParent != null) { 2560 return mParent.onCreateOptionsMenu(menu); 2561 } 2562 return true; 2563 } 2564 2565 /** 2566 * Prepare the Screen's standard options menu to be displayed. This is 2567 * called right before the menu is shown, every time it is shown. You can 2568 * use this method to efficiently enable/disable items or otherwise 2569 * dynamically modify the contents. 2570 * 2571 * <p>The default implementation updates the system menu items based on the 2572 * activity's state. Deriving classes should always call through to the 2573 * base class implementation. 2574 * 2575 * @param menu The options menu as last shown or first initialized by 2576 * onCreateOptionsMenu(). 2577 * 2578 * @return You must return true for the menu to be displayed; 2579 * if you return false it will not be shown. 2580 * 2581 * @see #onCreateOptionsMenu 2582 */ 2583 public boolean onPrepareOptionsMenu(Menu menu) { 2584 if (mParent != null) { 2585 return mParent.onPrepareOptionsMenu(menu); 2586 } 2587 return true; 2588 } 2589 2590 /** 2591 * This hook is called whenever an item in your options menu is selected. 2592 * The default implementation simply returns false to have the normal 2593 * processing happen (calling the item's Runnable or sending a message to 2594 * its Handler as appropriate). You can use this method for any items 2595 * for which you would like to do processing without those other 2596 * facilities. 2597 * 2598 * <p>Derived classes should call through to the base class for it to 2599 * perform the default menu handling. 2600 * 2601 * @param item The menu item that was selected. 2602 * 2603 * @return boolean Return false to allow normal menu processing to 2604 * proceed, true to consume it here. 2605 * 2606 * @see #onCreateOptionsMenu 2607 */ 2608 public boolean onOptionsItemSelected(MenuItem item) { 2609 if (mParent != null) { 2610 return mParent.onOptionsItemSelected(item); 2611 } 2612 return false; 2613 } 2614 2615 /** 2616 * This hook is called whenever the options menu is being closed (either by the user canceling 2617 * the menu with the back/menu button, or when an item is selected). 2618 * 2619 * @param menu The options menu as last shown or first initialized by 2620 * onCreateOptionsMenu(). 2621 */ 2622 public void onOptionsMenuClosed(Menu menu) { 2623 if (mParent != null) { 2624 mParent.onOptionsMenuClosed(menu); 2625 } 2626 } 2627 2628 /** 2629 * Programmatically opens the options menu. If the options menu is already 2630 * open, this method does nothing. 2631 */ 2632 public void openOptionsMenu() { 2633 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2634 } 2635 2636 /** 2637 * Progammatically closes the options menu. If the options menu is already 2638 * closed, this method does nothing. 2639 */ 2640 public void closeOptionsMenu() { 2641 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2642 } 2643 2644 /** 2645 * Called when a context menu for the {@code view} is about to be shown. 2646 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2647 * time the context menu is about to be shown and should be populated for 2648 * the view (or item inside the view for {@link AdapterView} subclasses, 2649 * this can be found in the {@code menuInfo})). 2650 * <p> 2651 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2652 * item has been selected. 2653 * <p> 2654 * It is not safe to hold onto the context menu after this method returns. 2655 * {@inheritDoc} 2656 */ 2657 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2658 } 2659 2660 /** 2661 * Registers a context menu to be shown for the given view (multiple views 2662 * can show the context menu). This method will set the 2663 * {@link OnCreateContextMenuListener} on the view to this activity, so 2664 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2665 * called when it is time to show the context menu. 2666 * 2667 * @see #unregisterForContextMenu(View) 2668 * @param view The view that should show a context menu. 2669 */ 2670 public void registerForContextMenu(View view) { 2671 view.setOnCreateContextMenuListener(this); 2672 } 2673 2674 /** 2675 * Prevents a context menu to be shown for the given view. This method will remove the 2676 * {@link OnCreateContextMenuListener} on the view. 2677 * 2678 * @see #registerForContextMenu(View) 2679 * @param view The view that should stop showing a context menu. 2680 */ 2681 public void unregisterForContextMenu(View view) { 2682 view.setOnCreateContextMenuListener(null); 2683 } 2684 2685 /** 2686 * Programmatically opens the context menu for a particular {@code view}. 2687 * The {@code view} should have been added via 2688 * {@link #registerForContextMenu(View)}. 2689 * 2690 * @param view The view to show the context menu for. 2691 */ 2692 public void openContextMenu(View view) { 2693 view.showContextMenu(); 2694 } 2695 2696 /** 2697 * Programmatically closes the most recently opened context menu, if showing. 2698 */ 2699 public void closeContextMenu() { 2700 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2701 } 2702 2703 /** 2704 * This hook is called whenever an item in a context menu is selected. The 2705 * default implementation simply returns false to have the normal processing 2706 * happen (calling the item's Runnable or sending a message to its Handler 2707 * as appropriate). You can use this method for any items for which you 2708 * would like to do processing without those other facilities. 2709 * <p> 2710 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2711 * View that added this menu item. 2712 * <p> 2713 * Derived classes should call through to the base class for it to perform 2714 * the default menu handling. 2715 * 2716 * @param item The context menu item that was selected. 2717 * @return boolean Return false to allow normal context menu processing to 2718 * proceed, true to consume it here. 2719 */ 2720 public boolean onContextItemSelected(MenuItem item) { 2721 if (mParent != null) { 2722 return mParent.onContextItemSelected(item); 2723 } 2724 return false; 2725 } 2726 2727 /** 2728 * This hook is called whenever the context menu is being closed (either by 2729 * the user canceling the menu with the back/menu button, or when an item is 2730 * selected). 2731 * 2732 * @param menu The context menu that is being closed. 2733 */ 2734 public void onContextMenuClosed(Menu menu) { 2735 if (mParent != null) { 2736 mParent.onContextMenuClosed(menu); 2737 } 2738 } 2739 2740 /** 2741 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2742 */ 2743 @Deprecated 2744 protected Dialog onCreateDialog(int id) { 2745 return null; 2746 } 2747 2748 /** 2749 * Callback for creating dialogs that are managed (saved and restored) for you 2750 * by the activity. The default implementation calls through to 2751 * {@link #onCreateDialog(int)} for compatibility. 2752 * 2753 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2754 * or later, consider instead using a {@link DialogFragment} instead.</em> 2755 * 2756 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2757 * this method the first time, and hang onto it thereafter. Any dialog 2758 * that is created by this method will automatically be saved and restored 2759 * for you, including whether it is showing. 2760 * 2761 * <p>If you would like the activity to manage saving and restoring dialogs 2762 * for you, you should override this method and handle any ids that are 2763 * passed to {@link #showDialog}. 2764 * 2765 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2766 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 2767 * 2768 * @param id The id of the dialog. 2769 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2770 * @return The dialog. If you return null, the dialog will not be created. 2771 * 2772 * @see #onPrepareDialog(int, Dialog, Bundle) 2773 * @see #showDialog(int, Bundle) 2774 * @see #dismissDialog(int) 2775 * @see #removeDialog(int) 2776 * 2777 * @deprecated Use the new {@link DialogFragment} class with 2778 * {@link FragmentManager} instead; this is also 2779 * available on older platforms through the Android compatibility package. 2780 */ 2781 @Deprecated 2782 protected Dialog onCreateDialog(int id, Bundle args) { 2783 return onCreateDialog(id); 2784 } 2785 2786 /** 2787 * @deprecated Old no-arguments version of 2788 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 2789 */ 2790 @Deprecated 2791 protected void onPrepareDialog(int id, Dialog dialog) { 2792 dialog.setOwnerActivity(this); 2793 } 2794 2795 /** 2796 * Provides an opportunity to prepare a managed dialog before it is being 2797 * shown. The default implementation calls through to 2798 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 2799 * 2800 * <p> 2801 * Override this if you need to update a managed dialog based on the state 2802 * of the application each time it is shown. For example, a time picker 2803 * dialog might want to be updated with the current time. You should call 2804 * through to the superclass's implementation. The default implementation 2805 * will set this Activity as the owner activity on the Dialog. 2806 * 2807 * @param id The id of the managed dialog. 2808 * @param dialog The dialog. 2809 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 2810 * @see #onCreateDialog(int, Bundle) 2811 * @see #showDialog(int) 2812 * @see #dismissDialog(int) 2813 * @see #removeDialog(int) 2814 * 2815 * @deprecated Use the new {@link DialogFragment} class with 2816 * {@link FragmentManager} instead; this is also 2817 * available on older platforms through the Android compatibility package. 2818 */ 2819 @Deprecated 2820 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 2821 onPrepareDialog(id, dialog); 2822 } 2823 2824 /** 2825 * Simple version of {@link #showDialog(int, Bundle)} that does not 2826 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 2827 * with null arguments. 2828 * 2829 * @deprecated Use the new {@link DialogFragment} class with 2830 * {@link FragmentManager} instead; this is also 2831 * available on older platforms through the Android compatibility package. 2832 */ 2833 @Deprecated 2834 public final void showDialog(int id) { 2835 showDialog(id, null); 2836 } 2837 2838 /** 2839 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 2840 * will be made with the same id the first time this is called for a given 2841 * id. From thereafter, the dialog will be automatically saved and restored. 2842 * 2843 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2844 * or later, consider instead using a {@link DialogFragment} instead.</em> 2845 * 2846 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 2847 * be made to provide an opportunity to do any timely preparation. 2848 * 2849 * @param id The id of the managed dialog. 2850 * @param args Arguments to pass through to the dialog. These will be saved 2851 * and restored for you. Note that if the dialog is already created, 2852 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 2853 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 2854 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 2855 * @return Returns true if the Dialog was created; false is returned if 2856 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 2857 * 2858 * @see Dialog 2859 * @see #onCreateDialog(int, Bundle) 2860 * @see #onPrepareDialog(int, Dialog, Bundle) 2861 * @see #dismissDialog(int) 2862 * @see #removeDialog(int) 2863 * 2864 * @deprecated Use the new {@link DialogFragment} class with 2865 * {@link FragmentManager} instead; this is also 2866 * available on older platforms through the Android compatibility package. 2867 */ 2868 @Deprecated 2869 public final boolean showDialog(int id, Bundle args) { 2870 if (mManagedDialogs == null) { 2871 mManagedDialogs = new SparseArray<ManagedDialog>(); 2872 } 2873 ManagedDialog md = mManagedDialogs.get(id); 2874 if (md == null) { 2875 md = new ManagedDialog(); 2876 md.mDialog = createDialog(id, null, args); 2877 if (md.mDialog == null) { 2878 return false; 2879 } 2880 mManagedDialogs.put(id, md); 2881 } 2882 2883 md.mArgs = args; 2884 onPrepareDialog(id, md.mDialog, args); 2885 md.mDialog.show(); 2886 return true; 2887 } 2888 2889 /** 2890 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 2891 * 2892 * @param id The id of the managed dialog. 2893 * 2894 * @throws IllegalArgumentException if the id was not previously shown via 2895 * {@link #showDialog(int)}. 2896 * 2897 * @see #onCreateDialog(int, Bundle) 2898 * @see #onPrepareDialog(int, Dialog, Bundle) 2899 * @see #showDialog(int) 2900 * @see #removeDialog(int) 2901 * 2902 * @deprecated Use the new {@link DialogFragment} class with 2903 * {@link FragmentManager} instead; this is also 2904 * available on older platforms through the Android compatibility package. 2905 */ 2906 @Deprecated 2907 public final void dismissDialog(int id) { 2908 if (mManagedDialogs == null) { 2909 throw missingDialog(id); 2910 } 2911 2912 final ManagedDialog md = mManagedDialogs.get(id); 2913 if (md == null) { 2914 throw missingDialog(id); 2915 } 2916 md.mDialog.dismiss(); 2917 } 2918 2919 /** 2920 * Creates an exception to throw if a user passed in a dialog id that is 2921 * unexpected. 2922 */ 2923 private IllegalArgumentException missingDialog(int id) { 2924 return new IllegalArgumentException("no dialog with id " + id + " was ever " 2925 + "shown via Activity#showDialog"); 2926 } 2927 2928 /** 2929 * Removes any internal references to a dialog managed by this Activity. 2930 * If the dialog is showing, it will dismiss it as part of the clean up. 2931 * 2932 * <p>This can be useful if you know that you will never show a dialog again and 2933 * want to avoid the overhead of saving and restoring it in the future. 2934 * 2935 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 2936 * will not throw an exception if you try to remove an ID that does not 2937 * currently have an associated dialog.</p> 2938 * 2939 * @param id The id of the managed dialog. 2940 * 2941 * @see #onCreateDialog(int, Bundle) 2942 * @see #onPrepareDialog(int, Dialog, Bundle) 2943 * @see #showDialog(int) 2944 * @see #dismissDialog(int) 2945 * 2946 * @deprecated Use the new {@link DialogFragment} class with 2947 * {@link FragmentManager} instead; this is also 2948 * available on older platforms through the Android compatibility package. 2949 */ 2950 @Deprecated 2951 public final void removeDialog(int id) { 2952 if (mManagedDialogs != null) { 2953 final ManagedDialog md = mManagedDialogs.get(id); 2954 if (md != null) { 2955 md.mDialog.dismiss(); 2956 mManagedDialogs.remove(id); 2957 } 2958 } 2959 } 2960 2961 /** 2962 * This hook is called when the user signals the desire to start a search. 2963 * 2964 * <p>You can use this function as a simple way to launch the search UI, in response to a 2965 * menu item, search button, or other widgets within your activity. Unless overidden, 2966 * calling this function is the same as calling 2967 * {@link #startSearch startSearch(null, false, null, false)}, which launches 2968 * search for the current activity as specified in its manifest, see {@link SearchManager}. 2969 * 2970 * <p>You can override this function to force global search, e.g. in response to a dedicated 2971 * search key, or to block search entirely (by simply returning false). 2972 * 2973 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 2974 * The default implementation always returns {@code true}. 2975 * 2976 * @see android.app.SearchManager 2977 */ 2978 public boolean onSearchRequested() { 2979 startSearch(null, false, null, false); 2980 return true; 2981 } 2982 2983 /** 2984 * This hook is called to launch the search UI. 2985 * 2986 * <p>It is typically called from onSearchRequested(), either directly from 2987 * Activity.onSearchRequested() or from an overridden version in any given 2988 * Activity. If your goal is simply to activate search, it is preferred to call 2989 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 2990 * is to inject specific data such as context data, it is preferred to <i>override</i> 2991 * onSearchRequested(), so that any callers to it will benefit from the override. 2992 * 2993 * @param initialQuery Any non-null non-empty string will be inserted as 2994 * pre-entered text in the search query box. 2995 * @param selectInitialQuery If true, the intial query will be preselected, which means that 2996 * any further typing will replace it. This is useful for cases where an entire pre-formed 2997 * query is being inserted. If false, the selection point will be placed at the end of the 2998 * inserted query. This is useful when the inserted query is text that the user entered, 2999 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3000 * if initialQuery is a non-empty string.</i> 3001 * @param appSearchData An application can insert application-specific 3002 * context here, in order to improve quality or specificity of its own 3003 * searches. This data will be returned with SEARCH intent(s). Null if 3004 * no extra data is required. 3005 * @param globalSearch If false, this will only launch the search that has been specifically 3006 * defined by the application (which is usually defined as a local search). If no default 3007 * search is defined in the current application or activity, global search will be launched. 3008 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3009 * 3010 * @see android.app.SearchManager 3011 * @see #onSearchRequested 3012 */ 3013 public void startSearch(String initialQuery, boolean selectInitialQuery, 3014 Bundle appSearchData, boolean globalSearch) { 3015 ensureSearchManager(); 3016 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3017 appSearchData, globalSearch); 3018 } 3019 3020 /** 3021 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3022 * the search dialog. Made available for testing purposes. 3023 * 3024 * @param query The query to trigger. If empty, the request will be ignored. 3025 * @param appSearchData An application can insert application-specific 3026 * context here, in order to improve quality or specificity of its own 3027 * searches. This data will be returned with SEARCH intent(s). Null if 3028 * no extra data is required. 3029 */ 3030 public void triggerSearch(String query, Bundle appSearchData) { 3031 ensureSearchManager(); 3032 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3033 } 3034 3035 /** 3036 * Request that key events come to this activity. Use this if your 3037 * activity has no views with focus, but the activity still wants 3038 * a chance to process key events. 3039 * 3040 * @see android.view.Window#takeKeyEvents 3041 */ 3042 public void takeKeyEvents(boolean get) { 3043 getWindow().takeKeyEvents(get); 3044 } 3045 3046 /** 3047 * Enable extended window features. This is a convenience for calling 3048 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3049 * 3050 * @param featureId The desired feature as defined in 3051 * {@link android.view.Window}. 3052 * @return Returns true if the requested feature is supported and now 3053 * enabled. 3054 * 3055 * @see android.view.Window#requestFeature 3056 */ 3057 public final boolean requestWindowFeature(int featureId) { 3058 return getWindow().requestFeature(featureId); 3059 } 3060 3061 /** 3062 * Convenience for calling 3063 * {@link android.view.Window#setFeatureDrawableResource}. 3064 */ 3065 public final void setFeatureDrawableResource(int featureId, int resId) { 3066 getWindow().setFeatureDrawableResource(featureId, resId); 3067 } 3068 3069 /** 3070 * Convenience for calling 3071 * {@link android.view.Window#setFeatureDrawableUri}. 3072 */ 3073 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3074 getWindow().setFeatureDrawableUri(featureId, uri); 3075 } 3076 3077 /** 3078 * Convenience for calling 3079 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3080 */ 3081 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3082 getWindow().setFeatureDrawable(featureId, drawable); 3083 } 3084 3085 /** 3086 * Convenience for calling 3087 * {@link android.view.Window#setFeatureDrawableAlpha}. 3088 */ 3089 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3090 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3091 } 3092 3093 /** 3094 * Convenience for calling 3095 * {@link android.view.Window#getLayoutInflater}. 3096 */ 3097 public LayoutInflater getLayoutInflater() { 3098 return getWindow().getLayoutInflater(); 3099 } 3100 3101 /** 3102 * Returns a {@link MenuInflater} with this context. 3103 */ 3104 public MenuInflater getMenuInflater() { 3105 // Make sure that action views can get an appropriate theme. 3106 if (mMenuInflater == null) { 3107 initActionBar(); 3108 if (mActionBar != null) { 3109 mMenuInflater = new MenuInflater(mActionBar.getThemedContext()); 3110 } else { 3111 mMenuInflater = new MenuInflater(this); 3112 } 3113 } 3114 return mMenuInflater; 3115 } 3116 3117 @Override 3118 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3119 boolean first) { 3120 if (mParent == null) { 3121 super.onApplyThemeResource(theme, resid, first); 3122 } else { 3123 try { 3124 theme.setTo(mParent.getTheme()); 3125 } catch (Exception e) { 3126 // Empty 3127 } 3128 theme.applyStyle(resid, false); 3129 } 3130 } 3131 3132 /** 3133 * Launch an activity for which you would like a result when it finished. 3134 * When this activity exits, your 3135 * onActivityResult() method will be called with the given requestCode. 3136 * Using a negative requestCode is the same as calling 3137 * {@link #startActivity} (the activity is not launched as a sub-activity). 3138 * 3139 * <p>Note that this method should only be used with Intent protocols 3140 * that are defined to return a result. In other protocols (such as 3141 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3142 * not get the result when you expect. For example, if the activity you 3143 * are launching uses the singleTask launch mode, it will not run in your 3144 * task and thus you will immediately receive a cancel result. 3145 * 3146 * <p>As a special case, if you call startActivityForResult() with a requestCode 3147 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3148 * activity, then your window will not be displayed until a result is 3149 * returned back from the started activity. This is to avoid visible 3150 * flickering when redirecting to another activity. 3151 * 3152 * <p>This method throws {@link android.content.ActivityNotFoundException} 3153 * if there was no Activity found to run the given Intent. 3154 * 3155 * @param intent The intent to start. 3156 * @param requestCode If >= 0, this code will be returned in 3157 * onActivityResult() when the activity exits. 3158 * 3159 * @throws android.content.ActivityNotFoundException 3160 * 3161 * @see #startActivity 3162 */ 3163 public void startActivityForResult(Intent intent, int requestCode) { 3164 if (mParent == null) { 3165 Instrumentation.ActivityResult ar = 3166 mInstrumentation.execStartActivity( 3167 this, mMainThread.getApplicationThread(), mToken, this, 3168 intent, requestCode); 3169 if (ar != null) { 3170 mMainThread.sendActivityResult( 3171 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3172 ar.getResultData()); 3173 } 3174 if (requestCode >= 0) { 3175 // If this start is requesting a result, we can avoid making 3176 // the activity visible until the result is received. Setting 3177 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3178 // activity hidden during this time, to avoid flickering. 3179 // This can only be done when a result is requested because 3180 // that guarantees we will get information back when the 3181 // activity is finished, no matter what happens to it. 3182 mStartedActivity = true; 3183 } 3184 } else { 3185 mParent.startActivityFromChild(this, intent, requestCode); 3186 } 3187 } 3188 3189 /** 3190 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3191 * to use a IntentSender to describe the activity to be started. If 3192 * the IntentSender is for an activity, that activity will be started 3193 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3194 * here; otherwise, its associated action will be executed (such as 3195 * sending a broadcast) as if you had called 3196 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3197 * 3198 * @param intent The IntentSender to launch. 3199 * @param requestCode If >= 0, this code will be returned in 3200 * onActivityResult() when the activity exits. 3201 * @param fillInIntent If non-null, this will be provided as the 3202 * intent parameter to {@link IntentSender#sendIntent}. 3203 * @param flagsMask Intent flags in the original IntentSender that you 3204 * would like to change. 3205 * @param flagsValues Desired values for any bits set in 3206 * <var>flagsMask</var> 3207 * @param extraFlags Always set to 0. 3208 */ 3209 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3210 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3211 throws IntentSender.SendIntentException { 3212 if (mParent == null) { 3213 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3214 flagsMask, flagsValues, this); 3215 } else { 3216 mParent.startIntentSenderFromChild(this, intent, requestCode, 3217 fillInIntent, flagsMask, flagsValues, extraFlags); 3218 } 3219 } 3220 3221 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3222 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) 3223 throws IntentSender.SendIntentException { 3224 try { 3225 String resolvedType = null; 3226 if (fillInIntent != null) { 3227 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3228 } 3229 int result = ActivityManagerNative.getDefault() 3230 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3231 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3232 requestCode, flagsMask, flagsValues); 3233 if (result == IActivityManager.START_CANCELED) { 3234 throw new IntentSender.SendIntentException(); 3235 } 3236 Instrumentation.checkStartActivityResult(result, null); 3237 } catch (RemoteException e) { 3238 } 3239 if (requestCode >= 0) { 3240 // If this start is requesting a result, we can avoid making 3241 // the activity visible until the result is received. Setting 3242 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3243 // activity hidden during this time, to avoid flickering. 3244 // This can only be done when a result is requested because 3245 // that guarantees we will get information back when the 3246 // activity is finished, no matter what happens to it. 3247 mStartedActivity = true; 3248 } 3249 } 3250 3251 /** 3252 * Launch a new activity. You will not receive any information about when 3253 * the activity exits. This implementation overrides the base version, 3254 * providing information about 3255 * the activity performing the launch. Because of this additional 3256 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3257 * required; if not specified, the new activity will be added to the 3258 * task of the caller. 3259 * 3260 * <p>This method throws {@link android.content.ActivityNotFoundException} 3261 * if there was no Activity found to run the given Intent. 3262 * 3263 * @param intent The intent to start. 3264 * 3265 * @throws android.content.ActivityNotFoundException 3266 * 3267 * @see #startActivityForResult 3268 */ 3269 @Override 3270 public void startActivity(Intent intent) { 3271 startActivityForResult(intent, -1); 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 intents The intents to start. 3287 * 3288 * @throws android.content.ActivityNotFoundException 3289 * 3290 * @see #startActivityForResult 3291 */ 3292 @Override 3293 public void startActivities(Intent[] intents) { 3294 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3295 mToken, this, intents); 3296 } 3297 3298 /** 3299 * Like {@link #startActivity(Intent)}, but taking a IntentSender 3300 * to start; see 3301 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3302 * for more information. 3303 * 3304 * @param intent The IntentSender to launch. 3305 * @param fillInIntent If non-null, this will be provided as the 3306 * intent parameter to {@link IntentSender#sendIntent}. 3307 * @param flagsMask Intent flags in the original IntentSender that you 3308 * would like to change. 3309 * @param flagsValues Desired values for any bits set in 3310 * <var>flagsMask</var> 3311 * @param extraFlags Always set to 0. 3312 */ 3313 public void startIntentSender(IntentSender intent, 3314 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3315 throws IntentSender.SendIntentException { 3316 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3317 flagsValues, extraFlags); 3318 } 3319 3320 /** 3321 * A special variation to launch an activity only if a new activity 3322 * instance is needed to handle the given Intent. In other words, this is 3323 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3324 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3325 * singleTask or singleTop 3326 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3327 * and the activity 3328 * that handles <var>intent</var> is the same as your currently running 3329 * activity, then a new instance is not needed. In this case, instead of 3330 * the normal behavior of calling {@link #onNewIntent} this function will 3331 * return and you can handle the Intent yourself. 3332 * 3333 * <p>This function can only be called from a top-level activity; if it is 3334 * called from a child activity, a runtime exception will be thrown. 3335 * 3336 * @param intent The intent to start. 3337 * @param requestCode If >= 0, this code will be returned in 3338 * onActivityResult() when the activity exits, as described in 3339 * {@link #startActivityForResult}. 3340 * 3341 * @return If a new activity was launched then true is returned; otherwise 3342 * false is returned and you must handle the Intent yourself. 3343 * 3344 * @see #startActivity 3345 * @see #startActivityForResult 3346 */ 3347 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3348 if (mParent == null) { 3349 int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; 3350 try { 3351 result = ActivityManagerNative.getDefault() 3352 .startActivity(mMainThread.getApplicationThread(), 3353 intent, intent.resolveTypeIfNeeded( 3354 getContentResolver()), 3355 null, 0, 3356 mToken, mEmbeddedID, requestCode, true, false, 3357 null, null, false); 3358 } catch (RemoteException e) { 3359 // Empty 3360 } 3361 3362 Instrumentation.checkStartActivityResult(result, intent); 3363 3364 if (requestCode >= 0) { 3365 // If this start is requesting a result, we can avoid making 3366 // the activity visible until the result is received. Setting 3367 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3368 // activity hidden during this time, to avoid flickering. 3369 // This can only be done when a result is requested because 3370 // that guarantees we will get information back when the 3371 // activity is finished, no matter what happens to it. 3372 mStartedActivity = true; 3373 } 3374 return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; 3375 } 3376 3377 throw new UnsupportedOperationException( 3378 "startActivityIfNeeded can only be called from a top-level activity"); 3379 } 3380 3381 /** 3382 * Special version of starting an activity, for use when you are replacing 3383 * other activity components. You can use this to hand the Intent off 3384 * to the next Activity that can handle it. You typically call this in 3385 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3386 * 3387 * @param intent The intent to dispatch to the next activity. For 3388 * correct behavior, this must be the same as the Intent that started 3389 * your own activity; the only changes you can make are to the extras 3390 * inside of it. 3391 * 3392 * @return Returns a boolean indicating whether there was another Activity 3393 * to start: true if there was a next activity to start, false if there 3394 * wasn't. In general, if true is returned you will then want to call 3395 * finish() on yourself. 3396 */ 3397 public boolean startNextMatchingActivity(Intent intent) { 3398 if (mParent == null) { 3399 try { 3400 return ActivityManagerNative.getDefault() 3401 .startNextMatchingActivity(mToken, intent); 3402 } catch (RemoteException e) { 3403 // Empty 3404 } 3405 return false; 3406 } 3407 3408 throw new UnsupportedOperationException( 3409 "startNextMatchingActivity can only be called from a top-level activity"); 3410 } 3411 3412 /** 3413 * This is called when a child activity of this one calls its 3414 * {@link #startActivity} or {@link #startActivityForResult} method. 3415 * 3416 * <p>This method throws {@link android.content.ActivityNotFoundException} 3417 * if there was no Activity found to run the given Intent. 3418 * 3419 * @param child The activity making the call. 3420 * @param intent The intent to start. 3421 * @param requestCode Reply request code. < 0 if reply is not requested. 3422 * 3423 * @throws android.content.ActivityNotFoundException 3424 * 3425 * @see #startActivity 3426 * @see #startActivityForResult 3427 */ 3428 public void startActivityFromChild(Activity child, Intent intent, 3429 int requestCode) { 3430 Instrumentation.ActivityResult ar = 3431 mInstrumentation.execStartActivity( 3432 this, mMainThread.getApplicationThread(), mToken, child, 3433 intent, requestCode); 3434 if (ar != null) { 3435 mMainThread.sendActivityResult( 3436 mToken, child.mEmbeddedID, requestCode, 3437 ar.getResultCode(), ar.getResultData()); 3438 } 3439 } 3440 3441 /** 3442 * This is called when a Fragment in this activity calls its 3443 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3444 * method. 3445 * 3446 * <p>This method throws {@link android.content.ActivityNotFoundException} 3447 * if there was no Activity found to run the given Intent. 3448 * 3449 * @param fragment The fragment making the call. 3450 * @param intent The intent to start. 3451 * @param requestCode Reply request code. < 0 if reply is not requested. 3452 * 3453 * @throws android.content.ActivityNotFoundException 3454 * 3455 * @see Fragment#startActivity 3456 * @see Fragment#startActivityForResult 3457 */ 3458 public void startActivityFromFragment(Fragment fragment, Intent intent, 3459 int requestCode) { 3460 Instrumentation.ActivityResult ar = 3461 mInstrumentation.execStartActivity( 3462 this, mMainThread.getApplicationThread(), mToken, fragment, 3463 intent, requestCode); 3464 if (ar != null) { 3465 mMainThread.sendActivityResult( 3466 mToken, fragment.mWho, requestCode, 3467 ar.getResultCode(), ar.getResultData()); 3468 } 3469 } 3470 3471 /** 3472 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3473 * taking a IntentSender; see 3474 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3475 * for more information. 3476 */ 3477 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3478 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3479 int extraFlags) 3480 throws IntentSender.SendIntentException { 3481 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3482 flagsMask, flagsValues, child); 3483 } 3484 3485 /** 3486 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3487 * or {@link #finish} to specify an explicit transition animation to 3488 * perform next. 3489 * @param enterAnim A resource ID of the animation resource to use for 3490 * the incoming activity. Use 0 for no animation. 3491 * @param exitAnim A resource ID of the animation resource to use for 3492 * the outgoing activity. Use 0 for no animation. 3493 */ 3494 public void overridePendingTransition(int enterAnim, int exitAnim) { 3495 try { 3496 ActivityManagerNative.getDefault().overridePendingTransition( 3497 mToken, getPackageName(), enterAnim, exitAnim); 3498 } catch (RemoteException e) { 3499 } 3500 } 3501 3502 /** 3503 * Call this to set the result that your activity will return to its 3504 * caller. 3505 * 3506 * @param resultCode The result code to propagate back to the originating 3507 * activity, often RESULT_CANCELED or RESULT_OK 3508 * 3509 * @see #RESULT_CANCELED 3510 * @see #RESULT_OK 3511 * @see #RESULT_FIRST_USER 3512 * @see #setResult(int, Intent) 3513 */ 3514 public final void setResult(int resultCode) { 3515 synchronized (this) { 3516 mResultCode = resultCode; 3517 mResultData = null; 3518 } 3519 } 3520 3521 /** 3522 * Call this to set the result that your activity will return to its 3523 * caller. 3524 * 3525 * @param resultCode The result code to propagate back to the originating 3526 * activity, often RESULT_CANCELED or RESULT_OK 3527 * @param data The data to propagate back to the originating activity. 3528 * 3529 * @see #RESULT_CANCELED 3530 * @see #RESULT_OK 3531 * @see #RESULT_FIRST_USER 3532 * @see #setResult(int) 3533 */ 3534 public final void setResult(int resultCode, Intent data) { 3535 synchronized (this) { 3536 mResultCode = resultCode; 3537 mResultData = data; 3538 } 3539 } 3540 3541 /** 3542 * Return the name of the package that invoked this activity. This is who 3543 * the data in {@link #setResult setResult()} will be sent to. You can 3544 * use this information to validate that the recipient is allowed to 3545 * receive the data. 3546 * 3547 * <p>Note: if the calling activity is not expecting a result (that is it 3548 * did not use the {@link #startActivityForResult} 3549 * form that includes a request code), then the calling package will be 3550 * null. 3551 * 3552 * @return The package of the activity that will receive your 3553 * reply, or null if none. 3554 */ 3555 public String getCallingPackage() { 3556 try { 3557 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 3558 } catch (RemoteException e) { 3559 return null; 3560 } 3561 } 3562 3563 /** 3564 * Return the name of the activity that invoked this activity. This is 3565 * who the data in {@link #setResult setResult()} will be sent to. You 3566 * can use this information to validate that the recipient is allowed to 3567 * receive the data. 3568 * 3569 * <p>Note: if the calling activity is not expecting a result (that is it 3570 * did not use the {@link #startActivityForResult} 3571 * form that includes a request code), then the calling package will be 3572 * null. 3573 * 3574 * @return String The full name of the activity that will receive your 3575 * reply, or null if none. 3576 */ 3577 public ComponentName getCallingActivity() { 3578 try { 3579 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 3580 } catch (RemoteException e) { 3581 return null; 3582 } 3583 } 3584 3585 /** 3586 * Control whether this activity's main window is visible. This is intended 3587 * only for the special case of an activity that is not going to show a 3588 * UI itself, but can't just finish prior to onResume() because it needs 3589 * to wait for a service binding or such. Setting this to false allows 3590 * you to prevent your UI from being shown during that time. 3591 * 3592 * <p>The default value for this is taken from the 3593 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 3594 */ 3595 public void setVisible(boolean visible) { 3596 if (mVisibleFromClient != visible) { 3597 mVisibleFromClient = visible; 3598 if (mVisibleFromServer) { 3599 if (visible) makeVisible(); 3600 else mDecor.setVisibility(View.INVISIBLE); 3601 } 3602 } 3603 } 3604 3605 void makeVisible() { 3606 if (!mWindowAdded) { 3607 ViewManager wm = getWindowManager(); 3608 wm.addView(mDecor, getWindow().getAttributes()); 3609 mWindowAdded = true; 3610 } 3611 mDecor.setVisibility(View.VISIBLE); 3612 } 3613 3614 /** 3615 * Check to see whether this activity is in the process of finishing, 3616 * either because you called {@link #finish} on it or someone else 3617 * has requested that it finished. This is often used in 3618 * {@link #onPause} to determine whether the activity is simply pausing or 3619 * completely finishing. 3620 * 3621 * @return If the activity is finishing, returns true; else returns false. 3622 * 3623 * @see #finish 3624 */ 3625 public boolean isFinishing() { 3626 return mFinished; 3627 } 3628 3629 /** 3630 * Check to see whether this activity is in the process of being destroyed in order to be 3631 * recreated with a new configuration. This is often used in 3632 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 3633 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 3634 * 3635 * @return If the activity is being torn down in order to be recreated with a new configuration, 3636 * returns true; else returns false. 3637 */ 3638 public boolean isChangingConfigurations() { 3639 return mChangingConfigurations; 3640 } 3641 3642 /** 3643 * Cause this Activity to be recreated with a new instance. This results 3644 * in essentially the same flow as when the Activity is created due to 3645 * a configuration change -- the current instance will go through its 3646 * lifecycle to {@link #onDestroy} and a new instance then created after it. 3647 */ 3648 public void recreate() { 3649 if (mParent != null) { 3650 throw new IllegalStateException("Can only be called on top-level activity"); 3651 } 3652 if (Looper.myLooper() != mMainThread.getLooper()) { 3653 throw new IllegalStateException("Must be called from main thread"); 3654 } 3655 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 3656 } 3657 3658 /** 3659 * Call this when your activity is done and should be closed. The 3660 * ActivityResult is propagated back to whoever launched you via 3661 * onActivityResult(). 3662 */ 3663 public void finish() { 3664 if (mParent == null) { 3665 int resultCode; 3666 Intent resultData; 3667 synchronized (this) { 3668 resultCode = mResultCode; 3669 resultData = mResultData; 3670 } 3671 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 3672 try { 3673 if (ActivityManagerNative.getDefault() 3674 .finishActivity(mToken, resultCode, resultData)) { 3675 mFinished = true; 3676 } 3677 } catch (RemoteException e) { 3678 // Empty 3679 } 3680 } else { 3681 mParent.finishFromChild(this); 3682 } 3683 } 3684 3685 /** 3686 * This is called when a child activity of this one calls its 3687 * {@link #finish} method. The default implementation simply calls 3688 * finish() on this activity (the parent), finishing the entire group. 3689 * 3690 * @param child The activity making the call. 3691 * 3692 * @see #finish 3693 */ 3694 public void finishFromChild(Activity child) { 3695 finish(); 3696 } 3697 3698 /** 3699 * Force finish another activity that you had previously started with 3700 * {@link #startActivityForResult}. 3701 * 3702 * @param requestCode The request code of the activity that you had 3703 * given to startActivityForResult(). If there are multiple 3704 * activities started with this request code, they 3705 * will all be finished. 3706 */ 3707 public void finishActivity(int requestCode) { 3708 if (mParent == null) { 3709 try { 3710 ActivityManagerNative.getDefault() 3711 .finishSubActivity(mToken, mEmbeddedID, requestCode); 3712 } catch (RemoteException e) { 3713 // Empty 3714 } 3715 } else { 3716 mParent.finishActivityFromChild(this, requestCode); 3717 } 3718 } 3719 3720 /** 3721 * This is called when a child activity of this one calls its 3722 * finishActivity(). 3723 * 3724 * @param child The activity making the call. 3725 * @param requestCode Request code that had been used to start the 3726 * activity. 3727 */ 3728 public void finishActivityFromChild(Activity child, int requestCode) { 3729 try { 3730 ActivityManagerNative.getDefault() 3731 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 3732 } catch (RemoteException e) { 3733 // Empty 3734 } 3735 } 3736 3737 /** 3738 * Called when an activity you launched exits, giving you the requestCode 3739 * you started it with, the resultCode it returned, and any additional 3740 * data from it. The <var>resultCode</var> will be 3741 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 3742 * didn't return any result, or crashed during its operation. 3743 * 3744 * <p>You will receive this call immediately before onResume() when your 3745 * activity is re-starting. 3746 * 3747 * @param requestCode The integer request code originally supplied to 3748 * startActivityForResult(), allowing you to identify who this 3749 * result came from. 3750 * @param resultCode The integer result code returned by the child activity 3751 * through its setResult(). 3752 * @param data An Intent, which can return result data to the caller 3753 * (various data can be attached to Intent "extras"). 3754 * 3755 * @see #startActivityForResult 3756 * @see #createPendingResult 3757 * @see #setResult(int) 3758 */ 3759 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3760 } 3761 3762 /** 3763 * Create a new PendingIntent object which you can hand to others 3764 * for them to use to send result data back to your 3765 * {@link #onActivityResult} callback. The created object will be either 3766 * one-shot (becoming invalid after a result is sent back) or multiple 3767 * (allowing any number of results to be sent through it). 3768 * 3769 * @param requestCode Private request code for the sender that will be 3770 * associated with the result data when it is returned. The sender can not 3771 * modify this value, allowing you to identify incoming results. 3772 * @param data Default data to supply in the result, which may be modified 3773 * by the sender. 3774 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 3775 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 3776 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 3777 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 3778 * or any of the flags as supported by 3779 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 3780 * of the intent that can be supplied when the actual send happens. 3781 * 3782 * @return Returns an existing or new PendingIntent matching the given 3783 * parameters. May return null only if 3784 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 3785 * supplied. 3786 * 3787 * @see PendingIntent 3788 */ 3789 public PendingIntent createPendingResult(int requestCode, Intent data, 3790 int flags) { 3791 String packageName = getPackageName(); 3792 try { 3793 IIntentSender target = 3794 ActivityManagerNative.getDefault().getIntentSender( 3795 IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 3796 mParent == null ? mToken : mParent.mToken, 3797 mEmbeddedID, requestCode, new Intent[] { data }, null, flags); 3798 return target != null ? new PendingIntent(target) : null; 3799 } catch (RemoteException e) { 3800 // Empty 3801 } 3802 return null; 3803 } 3804 3805 /** 3806 * Change the desired orientation of this activity. If the activity 3807 * is currently in the foreground or otherwise impacting the screen 3808 * orientation, the screen will immediately be changed (possibly causing 3809 * the activity to be restarted). Otherwise, this will be used the next 3810 * time the activity is visible. 3811 * 3812 * @param requestedOrientation An orientation constant as used in 3813 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3814 */ 3815 public void setRequestedOrientation(int requestedOrientation) { 3816 if (mParent == null) { 3817 try { 3818 ActivityManagerNative.getDefault().setRequestedOrientation( 3819 mToken, requestedOrientation); 3820 } catch (RemoteException e) { 3821 // Empty 3822 } 3823 } else { 3824 mParent.setRequestedOrientation(requestedOrientation); 3825 } 3826 } 3827 3828 /** 3829 * Return the current requested orientation of the activity. This will 3830 * either be the orientation requested in its component's manifest, or 3831 * the last requested orientation given to 3832 * {@link #setRequestedOrientation(int)}. 3833 * 3834 * @return Returns an orientation constant as used in 3835 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 3836 */ 3837 public int getRequestedOrientation() { 3838 if (mParent == null) { 3839 try { 3840 return ActivityManagerNative.getDefault() 3841 .getRequestedOrientation(mToken); 3842 } catch (RemoteException e) { 3843 // Empty 3844 } 3845 } else { 3846 return mParent.getRequestedOrientation(); 3847 } 3848 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 3849 } 3850 3851 /** 3852 * Return the identifier of the task this activity is in. This identifier 3853 * will remain the same for the lifetime of the activity. 3854 * 3855 * @return Task identifier, an opaque integer. 3856 */ 3857 public int getTaskId() { 3858 try { 3859 return ActivityManagerNative.getDefault() 3860 .getTaskForActivity(mToken, false); 3861 } catch (RemoteException e) { 3862 return -1; 3863 } 3864 } 3865 3866 /** 3867 * Return whether this activity is the root of a task. The root is the 3868 * first activity in a task. 3869 * 3870 * @return True if this is the root activity, else false. 3871 */ 3872 public boolean isTaskRoot() { 3873 try { 3874 return ActivityManagerNative.getDefault() 3875 .getTaskForActivity(mToken, true) >= 0; 3876 } catch (RemoteException e) { 3877 return false; 3878 } 3879 } 3880 3881 /** 3882 * Move the task containing this activity to the back of the activity 3883 * stack. The activity's order within the task is unchanged. 3884 * 3885 * @param nonRoot If false then this only works if the activity is the root 3886 * of a task; if true it will work for any activity in 3887 * a task. 3888 * 3889 * @return If the task was moved (or it was already at the 3890 * back) true is returned, else false. 3891 */ 3892 public boolean moveTaskToBack(boolean nonRoot) { 3893 try { 3894 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 3895 mToken, nonRoot); 3896 } catch (RemoteException e) { 3897 // Empty 3898 } 3899 return false; 3900 } 3901 3902 /** 3903 * Returns class name for this activity with the package prefix removed. 3904 * This is the default name used to read and write settings. 3905 * 3906 * @return The local class name. 3907 */ 3908 public String getLocalClassName() { 3909 final String pkg = getPackageName(); 3910 final String cls = mComponent.getClassName(); 3911 int packageLen = pkg.length(); 3912 if (!cls.startsWith(pkg) || cls.length() <= packageLen 3913 || cls.charAt(packageLen) != '.') { 3914 return cls; 3915 } 3916 return cls.substring(packageLen+1); 3917 } 3918 3919 /** 3920 * Returns complete component name of this activity. 3921 * 3922 * @return Returns the complete component name for this activity 3923 */ 3924 public ComponentName getComponentName() 3925 { 3926 return mComponent; 3927 } 3928 3929 /** 3930 * Retrieve a {@link SharedPreferences} object for accessing preferences 3931 * that are private to this activity. This simply calls the underlying 3932 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 3933 * class name as the preferences name. 3934 * 3935 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 3936 * operation, {@link #MODE_WORLD_READABLE} and 3937 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 3938 * 3939 * @return Returns the single SharedPreferences instance that can be used 3940 * to retrieve and modify the preference values. 3941 */ 3942 public SharedPreferences getPreferences(int mode) { 3943 return getSharedPreferences(getLocalClassName(), mode); 3944 } 3945 3946 private void ensureSearchManager() { 3947 if (mSearchManager != null) { 3948 return; 3949 } 3950 3951 mSearchManager = new SearchManager(this, null); 3952 } 3953 3954 @Override 3955 public Object getSystemService(String name) { 3956 if (getBaseContext() == null) { 3957 throw new IllegalStateException( 3958 "System services not available to Activities before onCreate()"); 3959 } 3960 3961 if (WINDOW_SERVICE.equals(name)) { 3962 return mWindowManager; 3963 } else if (SEARCH_SERVICE.equals(name)) { 3964 ensureSearchManager(); 3965 return mSearchManager; 3966 } 3967 return super.getSystemService(name); 3968 } 3969 3970 /** 3971 * Change the title associated with this activity. If this is a 3972 * top-level activity, the title for its window will change. If it 3973 * is an embedded activity, the parent can do whatever it wants 3974 * with it. 3975 */ 3976 public void setTitle(CharSequence title) { 3977 mTitle = title; 3978 onTitleChanged(title, mTitleColor); 3979 3980 if (mParent != null) { 3981 mParent.onChildTitleChanged(this, title); 3982 } 3983 } 3984 3985 /** 3986 * Change the title associated with this activity. If this is a 3987 * top-level activity, the title for its window will change. If it 3988 * is an embedded activity, the parent can do whatever it wants 3989 * with it. 3990 */ 3991 public void setTitle(int titleId) { 3992 setTitle(getText(titleId)); 3993 } 3994 3995 public void setTitleColor(int textColor) { 3996 mTitleColor = textColor; 3997 onTitleChanged(mTitle, textColor); 3998 } 3999 4000 public final CharSequence getTitle() { 4001 return mTitle; 4002 } 4003 4004 public final int getTitleColor() { 4005 return mTitleColor; 4006 } 4007 4008 protected void onTitleChanged(CharSequence title, int color) { 4009 if (mTitleReady) { 4010 final Window win = getWindow(); 4011 if (win != null) { 4012 win.setTitle(title); 4013 if (color != 0) { 4014 win.setTitleColor(color); 4015 } 4016 } 4017 } 4018 } 4019 4020 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4021 } 4022 4023 /** 4024 * Sets the visibility of the progress bar in the title. 4025 * <p> 4026 * In order for the progress bar to be shown, the feature must be requested 4027 * via {@link #requestWindowFeature(int)}. 4028 * 4029 * @param visible Whether to show the progress bars in the title. 4030 */ 4031 public final void setProgressBarVisibility(boolean visible) { 4032 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4033 Window.PROGRESS_VISIBILITY_OFF); 4034 } 4035 4036 /** 4037 * Sets the visibility of the indeterminate progress bar in the title. 4038 * <p> 4039 * In order for the progress bar to be shown, the feature must be requested 4040 * via {@link #requestWindowFeature(int)}. 4041 * 4042 * @param visible Whether to show the progress bars in the title. 4043 */ 4044 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4045 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4046 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4047 } 4048 4049 /** 4050 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4051 * is always indeterminate). 4052 * <p> 4053 * In order for the progress bar to be shown, the feature must be requested 4054 * via {@link #requestWindowFeature(int)}. 4055 * 4056 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4057 */ 4058 public final void setProgressBarIndeterminate(boolean indeterminate) { 4059 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4060 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4061 } 4062 4063 /** 4064 * Sets the progress for the progress bars in the title. 4065 * <p> 4066 * In order for the progress bar to be shown, the feature must be requested 4067 * via {@link #requestWindowFeature(int)}. 4068 * 4069 * @param progress The progress for the progress bar. Valid ranges are from 4070 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4071 * bar will be completely filled and will fade out. 4072 */ 4073 public final void setProgress(int progress) { 4074 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4075 } 4076 4077 /** 4078 * Sets the secondary progress for the progress bar in the title. This 4079 * progress is drawn between the primary progress (set via 4080 * {@link #setProgress(int)} and the background. It can be ideal for media 4081 * scenarios such as showing the buffering progress while the default 4082 * progress shows the play progress. 4083 * <p> 4084 * In order for the progress bar to be shown, the feature must be requested 4085 * via {@link #requestWindowFeature(int)}. 4086 * 4087 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4088 * 0 to 10000 (both inclusive). 4089 */ 4090 public final void setSecondaryProgress(int secondaryProgress) { 4091 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4092 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4093 } 4094 4095 /** 4096 * Suggests an audio stream whose volume should be changed by the hardware 4097 * volume controls. 4098 * <p> 4099 * The suggested audio stream will be tied to the window of this Activity. 4100 * If the Activity is switched, the stream set here is no longer the 4101 * suggested stream. The client does not need to save and restore the old 4102 * suggested stream value in onPause and onResume. 4103 * 4104 * @param streamType The type of the audio stream whose volume should be 4105 * changed by the hardware volume controls. It is not guaranteed that 4106 * the hardware volume controls will always change this stream's 4107 * volume (for example, if a call is in progress, its stream's volume 4108 * may be changed instead). To reset back to the default, use 4109 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4110 */ 4111 public final void setVolumeControlStream(int streamType) { 4112 getWindow().setVolumeControlStream(streamType); 4113 } 4114 4115 /** 4116 * Gets the suggested audio stream whose volume should be changed by the 4117 * harwdare volume controls. 4118 * 4119 * @return The suggested audio stream type whose volume should be changed by 4120 * the hardware volume controls. 4121 * @see #setVolumeControlStream(int) 4122 */ 4123 public final int getVolumeControlStream() { 4124 return getWindow().getVolumeControlStream(); 4125 } 4126 4127 /** 4128 * Runs the specified action on the UI thread. If the current thread is the UI 4129 * thread, then the action is executed immediately. If the current thread is 4130 * not the UI thread, the action is posted to the event queue of the UI thread. 4131 * 4132 * @param action the action to run on the UI thread 4133 */ 4134 public final void runOnUiThread(Runnable action) { 4135 if (Thread.currentThread() != mUiThread) { 4136 mHandler.post(action); 4137 } else { 4138 action.run(); 4139 } 4140 } 4141 4142 /** 4143 * Standard implementation of 4144 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4145 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4146 * This implementation does nothing and is for 4147 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4148 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4149 * 4150 * @see android.view.LayoutInflater#createView 4151 * @see android.view.Window#getLayoutInflater 4152 */ 4153 public View onCreateView(String name, Context context, AttributeSet attrs) { 4154 return null; 4155 } 4156 4157 /** 4158 * Standard implementation of 4159 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4160 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4161 * This implementation handles <fragment> tags to embed fragments inside 4162 * of the activity. 4163 * 4164 * @see android.view.LayoutInflater#createView 4165 * @see android.view.Window#getLayoutInflater 4166 */ 4167 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4168 if (!"fragment".equals(name)) { 4169 return onCreateView(name, context, attrs); 4170 } 4171 4172 String fname = attrs.getAttributeValue(null, "class"); 4173 TypedArray a = 4174 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4175 if (fname == null) { 4176 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4177 } 4178 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4179 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4180 a.recycle(); 4181 4182 int containerId = parent != null ? parent.getId() : 0; 4183 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4184 throw new IllegalArgumentException(attrs.getPositionDescription() 4185 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4186 } 4187 4188 // If we restored from a previous state, we may already have 4189 // instantiated this fragment from the state and should use 4190 // that instance instead of making a new one. 4191 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4192 if (fragment == null && tag != null) { 4193 fragment = mFragments.findFragmentByTag(tag); 4194 } 4195 if (fragment == null && containerId != View.NO_ID) { 4196 fragment = mFragments.findFragmentById(containerId); 4197 } 4198 4199 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4200 + Integer.toHexString(id) + " fname=" + fname 4201 + " existing=" + fragment); 4202 if (fragment == null) { 4203 fragment = Fragment.instantiate(this, fname); 4204 fragment.mFromLayout = true; 4205 fragment.mFragmentId = id != 0 ? id : containerId; 4206 fragment.mContainerId = containerId; 4207 fragment.mTag = tag; 4208 fragment.mInLayout = true; 4209 fragment.mFragmentManager = mFragments; 4210 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4211 mFragments.addFragment(fragment, true); 4212 4213 } else if (fragment.mInLayout) { 4214 // A fragment already exists and it is not one we restored from 4215 // previous state. 4216 throw new IllegalArgumentException(attrs.getPositionDescription() 4217 + ": Duplicate id 0x" + Integer.toHexString(id) 4218 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4219 + " with another fragment for " + fname); 4220 } else { 4221 // This fragment was retained from a previous instance; get it 4222 // going now. 4223 fragment.mInLayout = true; 4224 // If this fragment is newly instantiated (either right now, or 4225 // from last saved state), then give it the attributes to 4226 // initialize itself. 4227 if (!fragment.mRetaining) { 4228 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4229 } 4230 mFragments.moveToState(fragment); 4231 } 4232 4233 if (fragment.mView == null) { 4234 throw new IllegalStateException("Fragment " + fname 4235 + " did not create a view."); 4236 } 4237 if (id != 0) { 4238 fragment.mView.setId(id); 4239 } 4240 if (fragment.mView.getTag() == null) { 4241 fragment.mView.setTag(tag); 4242 } 4243 return fragment.mView; 4244 } 4245 4246 /** 4247 * Print the Activity's state into the given stream. This gets invoked if 4248 * you run "adb shell dumpsys activity <activity_component_name>". 4249 * 4250 * @param prefix Desired prefix to prepend at each line of output. 4251 * @param fd The raw file descriptor that the dump is being sent to. 4252 * @param writer The PrintWriter to which you should dump your state. This will be 4253 * closed for you after you return. 4254 * @param args additional arguments to the dump request. 4255 */ 4256 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4257 writer.print(prefix); writer.print("Local Activity "); 4258 writer.print(Integer.toHexString(System.identityHashCode(this))); 4259 writer.println(" State:"); 4260 String innerPrefix = prefix + " "; 4261 writer.print(innerPrefix); writer.print("mResumed="); 4262 writer.print(mResumed); writer.print(" mStopped="); 4263 writer.print(mStopped); writer.print(" mFinished="); 4264 writer.println(mFinished); 4265 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4266 writer.println(mLoadersStarted); 4267 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4268 writer.println(mChangingConfigurations); 4269 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4270 writer.println(mCurrentConfig); 4271 if (mLoaderManager != null) { 4272 writer.print(prefix); writer.print("Loader Manager "); 4273 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4274 writer.println(":"); 4275 mLoaderManager.dump(prefix + " ", fd, writer, args); 4276 } 4277 mFragments.dump(prefix, fd, writer, args); 4278 } 4279 4280 /** 4281 * Bit indicating that this activity is "immersive" and should not be 4282 * interrupted by notifications if possible. 4283 * 4284 * This value is initially set by the manifest property 4285 * <code>android:immersive</code> but may be changed at runtime by 4286 * {@link #setImmersive}. 4287 * 4288 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4289 * @hide 4290 */ 4291 public boolean isImmersive() { 4292 try { 4293 return ActivityManagerNative.getDefault().isImmersive(mToken); 4294 } catch (RemoteException e) { 4295 return false; 4296 } 4297 } 4298 4299 /** 4300 * Adjust the current immersive mode setting. 4301 * 4302 * Note that changing this value will have no effect on the activity's 4303 * {@link android.content.pm.ActivityInfo} structure; that is, if 4304 * <code>android:immersive</code> is set to <code>true</code> 4305 * in the application's manifest entry for this activity, the {@link 4306 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4307 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4308 * FLAG_IMMERSIVE} bit set. 4309 * 4310 * @see #isImmersive 4311 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4312 * @hide 4313 */ 4314 public void setImmersive(boolean i) { 4315 try { 4316 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4317 } catch (RemoteException e) { 4318 // pass 4319 } 4320 } 4321 4322 /** 4323 * Start an action mode. 4324 * 4325 * @param callback Callback that will manage lifecycle events for this context mode 4326 * @return The ContextMode that was started, or null if it was canceled 4327 * 4328 * @see ActionMode 4329 */ 4330 public ActionMode startActionMode(ActionMode.Callback callback) { 4331 return mWindow.getDecorView().startActionMode(callback); 4332 } 4333 4334 /** 4335 * Give the Activity a chance to control the UI for an action mode requested 4336 * by the system. 4337 * 4338 * <p>Note: If you are looking for a notification callback that an action mode 4339 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4340 * 4341 * @param callback The callback that should control the new action mode 4342 * @return The new action mode, or <code>null</code> if the activity does not want to 4343 * provide special handling for this action mode. (It will be handled by the system.) 4344 */ 4345 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4346 initActionBar(); 4347 if (mActionBar != null) { 4348 return mActionBar.startActionMode(callback); 4349 } 4350 return null; 4351 } 4352 4353 /** 4354 * Notifies the Activity that an action mode has been started. 4355 * Activity subclasses overriding this method should call the superclass implementation. 4356 * 4357 * @param mode The new action mode. 4358 */ 4359 public void onActionModeStarted(ActionMode mode) { 4360 } 4361 4362 /** 4363 * Notifies the activity that an action mode has finished. 4364 * Activity subclasses overriding this method should call the superclass implementation. 4365 * 4366 * @param mode The action mode that just finished. 4367 */ 4368 public void onActionModeFinished(ActionMode mode) { 4369 } 4370 4371 // ------------------ Internal API ------------------ 4372 4373 final void setParent(Activity parent) { 4374 mParent = parent; 4375 } 4376 4377 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 4378 Application application, Intent intent, ActivityInfo info, CharSequence title, 4379 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 4380 Configuration config) { 4381 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 4382 lastNonConfigurationInstances, config); 4383 } 4384 4385 final void attach(Context context, ActivityThread aThread, 4386 Instrumentation instr, IBinder token, int ident, 4387 Application application, Intent intent, ActivityInfo info, 4388 CharSequence title, Activity parent, String id, 4389 NonConfigurationInstances lastNonConfigurationInstances, 4390 Configuration config) { 4391 attachBaseContext(context); 4392 4393 mFragments.attachActivity(this); 4394 4395 mWindow = PolicyManager.makeNewWindow(this); 4396 mWindow.setCallback(this); 4397 mWindow.getLayoutInflater().setPrivateFactory(this); 4398 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 4399 mWindow.setSoftInputMode(info.softInputMode); 4400 } 4401 if (info.uiOptions != 0) { 4402 mWindow.setUiOptions(info.uiOptions); 4403 } 4404 mUiThread = Thread.currentThread(); 4405 4406 mMainThread = aThread; 4407 mInstrumentation = instr; 4408 mToken = token; 4409 mIdent = ident; 4410 mApplication = application; 4411 mIntent = intent; 4412 mComponent = intent.getComponent(); 4413 mActivityInfo = info; 4414 mTitle = title; 4415 mParent = parent; 4416 mEmbeddedID = id; 4417 mLastNonConfigurationInstances = lastNonConfigurationInstances; 4418 4419 mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), 4420 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 4421 if (mParent != null) { 4422 mWindow.setContainer(mParent.getWindow()); 4423 } 4424 mWindowManager = mWindow.getWindowManager(); 4425 mCurrentConfig = config; 4426 } 4427 4428 final IBinder getActivityToken() { 4429 return mParent != null ? mParent.getActivityToken() : mToken; 4430 } 4431 4432 final void performCreate(Bundle icicle) { 4433 onCreate(icicle); 4434 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 4435 com.android.internal.R.styleable.Window_windowNoDisplay, false); 4436 mFragments.dispatchActivityCreated(); 4437 } 4438 4439 final void performStart() { 4440 mFragments.noteStateNotSaved(); 4441 mCalled = false; 4442 mFragments.execPendingActions(); 4443 mInstrumentation.callActivityOnStart(this); 4444 if (!mCalled) { 4445 throw new SuperNotCalledException( 4446 "Activity " + mComponent.toShortString() + 4447 " did not call through to super.onStart()"); 4448 } 4449 mFragments.dispatchStart(); 4450 if (mAllLoaderManagers != null) { 4451 for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { 4452 LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); 4453 lm.finishRetain(); 4454 lm.doReportStart(); 4455 } 4456 } 4457 } 4458 4459 final void performRestart() { 4460 mFragments.noteStateNotSaved(); 4461 4462 if (mStopped) { 4463 mStopped = false; 4464 if (mToken != null && mParent == null) { 4465 WindowManagerImpl.getDefault().setStoppedState(mToken, false); 4466 } 4467 4468 synchronized (mManagedCursors) { 4469 final int N = mManagedCursors.size(); 4470 for (int i=0; i<N; i++) { 4471 ManagedCursor mc = mManagedCursors.get(i); 4472 if (mc.mReleased || mc.mUpdated) { 4473 if (!mc.mCursor.requery()) { 4474 if (getApplicationInfo().targetSdkVersion 4475 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 4476 throw new IllegalStateException( 4477 "trying to requery an already closed cursor " 4478 + mc.mCursor); 4479 } 4480 } 4481 mc.mReleased = false; 4482 mc.mUpdated = false; 4483 } 4484 } 4485 } 4486 4487 mCalled = false; 4488 mInstrumentation.callActivityOnRestart(this); 4489 if (!mCalled) { 4490 throw new SuperNotCalledException( 4491 "Activity " + mComponent.toShortString() + 4492 " did not call through to super.onRestart()"); 4493 } 4494 performStart(); 4495 } 4496 } 4497 4498 final void performResume() { 4499 performRestart(); 4500 4501 mFragments.execPendingActions(); 4502 4503 mLastNonConfigurationInstances = null; 4504 4505 mCalled = false; 4506 // mResumed is set by the instrumentation 4507 mInstrumentation.callActivityOnResume(this); 4508 if (!mCalled) { 4509 throw new SuperNotCalledException( 4510 "Activity " + mComponent.toShortString() + 4511 " did not call through to super.onResume()"); 4512 } 4513 4514 // Now really resume, and install the current status bar and menu. 4515 mCalled = false; 4516 4517 mFragments.dispatchResume(); 4518 mFragments.execPendingActions(); 4519 4520 onPostResume(); 4521 if (!mCalled) { 4522 throw new SuperNotCalledException( 4523 "Activity " + mComponent.toShortString() + 4524 " did not call through to super.onPostResume()"); 4525 } 4526 } 4527 4528 final void performPause() { 4529 mFragments.dispatchPause(); 4530 mCalled = false; 4531 onPause(); 4532 mResumed = false; 4533 if (!mCalled && getApplicationInfo().targetSdkVersion 4534 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 4535 throw new SuperNotCalledException( 4536 "Activity " + mComponent.toShortString() + 4537 " did not call through to super.onPause()"); 4538 } 4539 mResumed = false; 4540 } 4541 4542 final void performUserLeaving() { 4543 onUserInteraction(); 4544 onUserLeaveHint(); 4545 } 4546 4547 final void performStop() { 4548 if (mLoadersStarted) { 4549 mLoadersStarted = false; 4550 if (mLoaderManager != null) { 4551 if (!mChangingConfigurations) { 4552 mLoaderManager.doStop(); 4553 } else { 4554 mLoaderManager.doRetain(); 4555 } 4556 } 4557 } 4558 4559 if (!mStopped) { 4560 if (mWindow != null) { 4561 mWindow.closeAllPanels(); 4562 } 4563 4564 if (mToken != null && mParent == null) { 4565 WindowManagerImpl.getDefault().setStoppedState(mToken, true); 4566 } 4567 4568 mFragments.dispatchStop(); 4569 4570 mCalled = false; 4571 mInstrumentation.callActivityOnStop(this); 4572 if (!mCalled) { 4573 throw new SuperNotCalledException( 4574 "Activity " + mComponent.toShortString() + 4575 " did not call through to super.onStop()"); 4576 } 4577 4578 synchronized (mManagedCursors) { 4579 final int N = mManagedCursors.size(); 4580 for (int i=0; i<N; i++) { 4581 ManagedCursor mc = mManagedCursors.get(i); 4582 if (!mc.mReleased) { 4583 mc.mCursor.deactivate(); 4584 mc.mReleased = true; 4585 } 4586 } 4587 } 4588 4589 mStopped = true; 4590 } 4591 mResumed = false; 4592 } 4593 4594 final void performDestroy() { 4595 mWindow.destroy(); 4596 mFragments.dispatchDestroy(); 4597 onDestroy(); 4598 if (mLoaderManager != null) { 4599 mLoaderManager.doDestroy(); 4600 } 4601 } 4602 4603 /** 4604 * @hide 4605 */ 4606 public final boolean isResumed() { 4607 return mResumed; 4608 } 4609 4610 void dispatchActivityResult(String who, int requestCode, 4611 int resultCode, Intent data) { 4612 if (false) Log.v( 4613 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 4614 + ", resCode=" + resultCode + ", data=" + data); 4615 mFragments.noteStateNotSaved(); 4616 if (who == null) { 4617 onActivityResult(requestCode, resultCode, data); 4618 } else { 4619 Fragment frag = mFragments.findFragmentByWho(who); 4620 if (frag != null) { 4621 frag.onActivityResult(requestCode, resultCode, data); 4622 } 4623 } 4624 } 4625} 4626