Activity.java revision 5eda9b330120f75964cd78b29f6101cc273c2a7e
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.pm.PackageManager; 33import android.content.pm.PackageManager.NameNotFoundException; 34import android.content.res.Configuration; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.database.Cursor; 38import android.graphics.Bitmap; 39import android.graphics.Canvas; 40import android.graphics.drawable.Drawable; 41import android.media.AudioManager; 42import android.net.Uri; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.Looper; 48import android.os.Parcelable; 49import android.os.RemoteException; 50import android.os.StrictMode; 51import android.os.UserHandle; 52import android.text.Selection; 53import android.text.SpannableStringBuilder; 54import android.text.TextUtils; 55import android.text.method.TextKeyListener; 56import android.util.AttributeSet; 57import android.util.EventLog; 58import android.util.Log; 59import android.util.Slog; 60import android.util.SparseArray; 61import android.view.ActionMode; 62import android.view.ContextMenu; 63import android.view.ContextMenu.ContextMenuInfo; 64import android.view.ContextThemeWrapper; 65import android.view.KeyEvent; 66import android.view.LayoutInflater; 67import android.view.Menu; 68import android.view.MenuInflater; 69import android.view.MenuItem; 70import android.view.MotionEvent; 71import android.view.View; 72import android.view.View.OnCreateContextMenuListener; 73import android.view.ViewGroup; 74import android.view.ViewGroup.LayoutParams; 75import android.view.ViewManager; 76import android.view.Window; 77import android.view.WindowManager; 78import android.view.WindowManagerGlobal; 79import android.view.accessibility.AccessibilityEvent; 80import android.widget.AdapterView; 81 82import java.io.FileDescriptor; 83import java.io.PrintWriter; 84import java.util.ArrayList; 85import java.util.HashMap; 86 87/** 88 * An activity is a single, focused thing that the user can do. Almost all 89 * activities interact with the user, so the Activity class takes care of 90 * creating a window for you in which you can place your UI with 91 * {@link #setContentView}. While activities are often presented to the user 92 * as full-screen windows, they can also be used in other ways: as floating 93 * windows (via a theme with {@link android.R.attr#windowIsFloating} set) 94 * or embedded inside of another activity (using {@link ActivityGroup}). 95 * 96 * There are two methods almost all subclasses of Activity will implement: 97 * 98 * <ul> 99 * <li> {@link #onCreate} is where you initialize your activity. Most 100 * importantly, here you will usually call {@link #setContentView(int)} 101 * with a layout resource defining your UI, and using {@link #findViewById} 102 * to retrieve the widgets in that UI that you need to interact with 103 * programmatically. 104 * 105 * <li> {@link #onPause} is where you deal with the user leaving your 106 * activity. Most importantly, any changes made by the user should at this 107 * point be committed (usually to the 108 * {@link android.content.ContentProvider} holding the data). 109 * </ul> 110 * 111 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all 112 * activity classes must have a corresponding 113 * {@link android.R.styleable#AndroidManifestActivity <activity>} 114 * declaration in their package's <code>AndroidManifest.xml</code>.</p> 115 * 116 * <p>Topics covered here: 117 * <ol> 118 * <li><a href="#Fragments">Fragments</a> 119 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> 120 * <li><a href="#ConfigurationChanges">Configuration Changes</a> 121 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> 122 * <li><a href="#SavingPersistentState">Saving Persistent State</a> 123 * <li><a href="#Permissions">Permissions</a> 124 * <li><a href="#ProcessLifecycle">Process Lifecycle</a> 125 * </ol> 126 * 127 * <div class="special reference"> 128 * <h3>Developer Guides</h3> 129 * <p>The Activity class is an important part of an application's overall lifecycle, 130 * and the way activities are launched and put together is a fundamental 131 * part of the platform's application model. For a detailed perspective on the structure of an 132 * Android application and how activities behave, please read the 133 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and 134 * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 135 * developer guides.</p> 136 * 137 * <p>You can also find a detailed discussion about how to create activities in the 138 * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> 139 * developer guide.</p> 140 * </div> 141 * 142 * <a name="Fragments"></a> 143 * <h3>Fragments</h3> 144 * 145 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity 146 * implementations can make use of the {@link Fragment} class to better 147 * modularize their code, build more sophisticated user interfaces for larger 148 * screens, and help scale their application between small and large screens. 149 * 150 * <a name="ActivityLifecycle"></a> 151 * <h3>Activity Lifecycle</h3> 152 * 153 * <p>Activities in the system are managed as an <em>activity stack</em>. 154 * When a new activity is started, it is placed on the top of the stack 155 * and becomes the running activity -- the previous activity always remains 156 * below it in the stack, and will not come to the foreground again until 157 * the new activity exits.</p> 158 * 159 * <p>An activity has essentially four states:</p> 160 * <ul> 161 * <li> If an activity in the foreground of the screen (at the top of 162 * the stack), 163 * it is <em>active</em> or <em>running</em>. </li> 164 * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized 165 * or transparent activity has focus on top of your activity), it 166 * is <em>paused</em>. A paused activity is completely alive (it 167 * maintains all state and member information and remains attached to 168 * the window manager), but can be killed by the system in extreme 169 * low memory situations. 170 * <li>If an activity is completely obscured by another activity, 171 * it is <em>stopped</em>. It still retains all state and member information, 172 * however, it is no longer visible to the user so its window is hidden 173 * and it will often be killed by the system when memory is needed 174 * elsewhere.</li> 175 * <li>If an activity is paused or stopped, the system can drop the activity 176 * from memory by either asking it to finish, or simply killing its 177 * process. When it is displayed again to the user, it must be 178 * completely restarted and restored to its previous state.</li> 179 * </ul> 180 * 181 * <p>The following diagram shows the important state paths of an Activity. 182 * The square rectangles represent callback methods you can implement to 183 * perform operations when the Activity moves between states. The colored 184 * ovals are major states the Activity can be in.</p> 185 * 186 * <p><img src="../../../images/activity_lifecycle.png" 187 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> 188 * 189 * <p>There are three key loops you may be interested in monitoring within your 190 * activity: 191 * 192 * <ul> 193 * <li>The <b>entire lifetime</b> of an activity happens between the first call 194 * to {@link android.app.Activity#onCreate} through to a single final call 195 * to {@link android.app.Activity#onDestroy}. An activity will do all setup 196 * of "global" state in onCreate(), and release all remaining resources in 197 * onDestroy(). For example, if it has a thread running in the background 198 * to download data from the network, it may create that thread in onCreate() 199 * and then stop the thread in onDestroy(). 200 * 201 * <li>The <b>visible lifetime</b> of an activity happens between a call to 202 * {@link android.app.Activity#onStart} until a corresponding call to 203 * {@link android.app.Activity#onStop}. During this time the user can see the 204 * activity on-screen, though it may not be in the foreground and interacting 205 * with the user. Between these two methods you can maintain resources that 206 * are needed to show the activity to the user. For example, you can register 207 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes 208 * that impact your UI, and unregister it in onStop() when the user no 209 * longer sees what you are displaying. The onStart() and onStop() methods 210 * can be called multiple times, as the activity becomes visible and hidden 211 * to the user. 212 * 213 * <li>The <b>foreground lifetime</b> of an activity happens between a call to 214 * {@link android.app.Activity#onResume} until a corresponding call to 215 * {@link android.app.Activity#onPause}. During this time the activity is 216 * in front of all other activities and interacting with the user. An activity 217 * can frequently go between the resumed and paused states -- for example when 218 * the device goes to sleep, when an activity result is delivered, when a new 219 * intent is delivered -- so the code in these methods should be fairly 220 * lightweight. 221 * </ul> 222 * 223 * <p>The entire lifecycle of an activity is defined by the following 224 * Activity methods. All of these are hooks that you can override 225 * to do appropriate work when the activity changes state. All 226 * activities will implement {@link android.app.Activity#onCreate} 227 * to do their initial setup; many will also implement 228 * {@link android.app.Activity#onPause} to commit changes to data and 229 * otherwise prepare to stop interacting with the user. You should always 230 * call up to your superclass when implementing these methods.</p> 231 * 232 * </p> 233 * <pre class="prettyprint"> 234 * public class Activity extends ApplicationContext { 235 * protected void onCreate(Bundle savedInstanceState); 236 * 237 * protected void onStart(); 238 * 239 * protected void onRestart(); 240 * 241 * protected void onResume(); 242 * 243 * protected void onPause(); 244 * 245 * protected void onStop(); 246 * 247 * protected void onDestroy(); 248 * } 249 * </pre> 250 * 251 * <p>In general the movement through an activity's lifecycle looks like 252 * this:</p> 253 * 254 * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> 255 * <colgroup align="left" span="3" /> 256 * <colgroup align="left" /> 257 * <colgroup align="center" /> 258 * <colgroup align="center" /> 259 * 260 * <thead> 261 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> 262 * </thead> 263 * 264 * <tbody> 265 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> 266 * <td>Called when the activity is first created. 267 * This is where you should do all of your normal static set up: 268 * create views, bind data to lists, etc. This method also 269 * provides you with a Bundle containing the activity's previously 270 * frozen state, if there was one. 271 * <p>Always followed by <code>onStart()</code>.</td> 272 * <td align="center">No</td> 273 * <td align="center"><code>onStart()</code></td> 274 * </tr> 275 * 276 * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> 277 * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> 278 * <td>Called after your activity has been stopped, prior to it being 279 * started again. 280 * <p>Always followed by <code>onStart()</code></td> 281 * <td align="center">No</td> 282 * <td align="center"><code>onStart()</code></td> 283 * </tr> 284 * 285 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> 286 * <td>Called when the activity is becoming visible to the user. 287 * <p>Followed by <code>onResume()</code> if the activity comes 288 * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> 289 * <td align="center">No</td> 290 * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> 291 * </tr> 292 * 293 * <tr><td rowspan="2" style="border-left: none;"> </td> 294 * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> 295 * <td>Called when the activity will start 296 * interacting with the user. At this point your activity is at 297 * the top of the activity stack, with user input going to it. 298 * <p>Always followed by <code>onPause()</code>.</td> 299 * <td align="center">No</td> 300 * <td align="center"><code>onPause()</code></td> 301 * </tr> 302 * 303 * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> 304 * <td>Called when the system is about to start resuming a previous 305 * activity. This is typically used to commit unsaved changes to 306 * persistent data, stop animations and other things that may be consuming 307 * CPU, etc. Implementations of this method must be very quick because 308 * the next activity will not be resumed until this method returns. 309 * <p>Followed by either <code>onResume()</code> if the activity 310 * returns back to the front, or <code>onStop()</code> if it becomes 311 * invisible to the user.</td> 312 * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> 313 * <td align="center"><code>onResume()</code> or<br> 314 * <code>onStop()</code></td> 315 * </tr> 316 * 317 * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> 318 * <td>Called when the activity is no longer visible to the user, because 319 * another activity has been resumed and is covering this one. This 320 * may happen either because a new activity is being started, an existing 321 * one is being brought in front of this one, or this one is being 322 * destroyed. 323 * <p>Followed by either <code>onRestart()</code> if 324 * this activity is coming back to interact with the user, or 325 * <code>onDestroy()</code> if this activity is going away.</td> 326 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 327 * <td align="center"><code>onRestart()</code> or<br> 328 * <code>onDestroy()</code></td> 329 * </tr> 330 * 331 * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> 332 * <td>The final call you receive before your 333 * activity is destroyed. This can happen either because the 334 * activity is finishing (someone called {@link Activity#finish} on 335 * it, or because the system is temporarily destroying this 336 * instance of the activity to save space. You can distinguish 337 * between these two scenarios with the {@link 338 * Activity#isFinishing} method.</td> 339 * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> 340 * <td align="center"><em>nothing</em></td> 341 * </tr> 342 * </tbody> 343 * </table> 344 * 345 * <p>Note the "Killable" column in the above table -- for those methods that 346 * are marked as being killable, after that method returns the process hosting the 347 * activity may killed by the system <em>at any time</em> without another line 348 * of its code being executed. Because of this, you should use the 349 * {@link #onPause} method to write any persistent data (such as user edits) 350 * to storage. In addition, the method 351 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity 352 * in such a background state, allowing you to save away any dynamic instance 353 * state in your activity into the given Bundle, to be later received in 354 * {@link #onCreate} if the activity needs to be re-created. 355 * See the <a href="#ProcessLifecycle">Process Lifecycle</a> 356 * section for more information on how the lifecycle of a process is tied 357 * to the activities it is hosting. Note that it is important to save 358 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} 359 * because the latter is not part of the lifecycle callbacks, so will not 360 * be called in every situation as described in its documentation.</p> 361 * 362 * <p class="note">Be aware that these semantics will change slightly between 363 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} 364 * vs. those targeting prior platforms. Starting with Honeycomb, an application 365 * is not in the killable state until its {@link #onStop} has returned. This 366 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be 367 * safely called after {@link #onPause()} and allows and application to safely 368 * wait until {@link #onStop()} to save persistent state.</p> 369 * 370 * <p>For those methods that are not marked as being killable, the activity's 371 * process will not be killed by the system starting from the time the method 372 * is called and continuing after it returns. Thus an activity is in the killable 373 * state, for example, between after <code>onPause()</code> to the start of 374 * <code>onResume()</code>.</p> 375 * 376 * <a name="ConfigurationChanges"></a> 377 * <h3>Configuration Changes</h3> 378 * 379 * <p>If the configuration of the device (as defined by the 380 * {@link Configuration Resources.Configuration} class) changes, 381 * then anything displaying a user interface will need to update to match that 382 * configuration. Because Activity is the primary mechanism for interacting 383 * with the user, it includes special support for handling configuration 384 * changes.</p> 385 * 386 * <p>Unless you specify otherwise, a configuration change (such as a change 387 * in screen orientation, language, input devices, etc) will cause your 388 * current activity to be <em>destroyed</em>, going through the normal activity 389 * lifecycle process of {@link #onPause}, 390 * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity 391 * had been in the foreground or visible to the user, once {@link #onDestroy} is 392 * called in that instance then a new instance of the activity will be 393 * created, with whatever savedInstanceState the previous instance had generated 394 * from {@link #onSaveInstanceState}.</p> 395 * 396 * <p>This is done because any application resource, 397 * including layout files, can change based on any configuration value. Thus 398 * the only safe way to handle a configuration change is to re-retrieve all 399 * resources, including layouts, drawables, and strings. Because activities 400 * must already know how to save their state and re-create themselves from 401 * that state, this is a convenient way to have an activity restart itself 402 * with a new configuration.</p> 403 * 404 * <p>In some special cases, you may want to bypass restarting of your 405 * activity based on one or more types of configuration changes. This is 406 * done with the {@link android.R.attr#configChanges android:configChanges} 407 * attribute in its manifest. For any types of configuration changes you say 408 * that you handle there, you will receive a call to your current activity's 409 * {@link #onConfigurationChanged} method instead of being restarted. If 410 * a configuration change involves any that you do not handle, however, the 411 * activity will still be restarted and {@link #onConfigurationChanged} 412 * will not be called.</p> 413 * 414 * <a name="StartingActivities"></a> 415 * <h3>Starting Activities and Getting Results</h3> 416 * 417 * <p>The {@link android.app.Activity#startActivity} 418 * method is used to start a 419 * new activity, which will be placed at the top of the activity stack. It 420 * takes a single argument, an {@link android.content.Intent Intent}, 421 * which describes the activity 422 * to be executed.</p> 423 * 424 * <p>Sometimes you want to get a result back from an activity when it 425 * ends. For example, you may start an activity that lets the user pick 426 * a person in a list of contacts; when it ends, it returns the person 427 * that was selected. To do this, you call the 428 * {@link android.app.Activity#startActivityForResult(Intent, int)} 429 * version with a second integer parameter identifying the call. The result 430 * will come back through your {@link android.app.Activity#onActivityResult} 431 * method.</p> 432 * 433 * <p>When an activity exits, it can call 434 * {@link android.app.Activity#setResult(int)} 435 * to return data back to its parent. It must always supply a result code, 436 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any 437 * custom values starting at RESULT_FIRST_USER. In addition, it can optionally 438 * return back an Intent containing any additional data it wants. All of this 439 * information appears back on the 440 * parent's <code>Activity.onActivityResult()</code>, along with the integer 441 * identifier it originally supplied.</p> 442 * 443 * <p>If a child activity fails for any reason (such as crashing), the parent 444 * activity will receive a result with the code RESULT_CANCELED.</p> 445 * 446 * <pre class="prettyprint"> 447 * public class MyActivity extends Activity { 448 * ... 449 * 450 * static final int PICK_CONTACT_REQUEST = 0; 451 * 452 * protected boolean onKeyDown(int keyCode, KeyEvent event) { 453 * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 454 * // When the user center presses, let them pick a contact. 455 * startActivityForResult( 456 * new Intent(Intent.ACTION_PICK, 457 * new Uri("content://contacts")), 458 * PICK_CONTACT_REQUEST); 459 * return true; 460 * } 461 * return false; 462 * } 463 * 464 * protected void onActivityResult(int requestCode, int resultCode, 465 * Intent data) { 466 * if (requestCode == PICK_CONTACT_REQUEST) { 467 * if (resultCode == RESULT_OK) { 468 * // A contact was picked. Here we will just display it 469 * // to the user. 470 * startActivity(new Intent(Intent.ACTION_VIEW, data)); 471 * } 472 * } 473 * } 474 * } 475 * </pre> 476 * 477 * <a name="SavingPersistentState"></a> 478 * <h3>Saving Persistent State</h3> 479 * 480 * <p>There are generally two kinds of persistent state than an activity 481 * will deal with: shared document-like data (typically stored in a SQLite 482 * database using a {@linkplain android.content.ContentProvider content provider}) 483 * and internal state such as user preferences.</p> 484 * 485 * <p>For content provider data, we suggest that activities use a 486 * "edit in place" user model. That is, any edits a user makes are effectively 487 * made immediately without requiring an additional confirmation step. 488 * Supporting this model is generally a simple matter of following two rules:</p> 489 * 490 * <ul> 491 * <li> <p>When creating a new document, the backing database entry or file for 492 * it is created immediately. For example, if the user chooses to write 493 * a new e-mail, a new entry for that e-mail is created as soon as they 494 * start entering data, so that if they go to any other activity after 495 * that point this e-mail will now appear in the list of drafts.</p> 496 * <li> <p>When an activity's <code>onPause()</code> method is called, it should 497 * commit to the backing content provider or file any changes the user 498 * has made. This ensures that those changes will be seen by any other 499 * activity that is about to run. You will probably want to commit 500 * your data even more aggressively at key times during your 501 * activity's lifecycle: for example before starting a new 502 * activity, before finishing your own activity, when the user 503 * switches between input fields, etc.</p> 504 * </ul> 505 * 506 * <p>This model is designed to prevent data loss when a user is navigating 507 * between activities, and allows the system to safely kill an activity (because 508 * system resources are needed somewhere else) at any time after it has been 509 * paused. Note this implies 510 * that the user pressing BACK from your activity does <em>not</em> 511 * mean "cancel" -- it means to leave the activity with its current contents 512 * saved away. Canceling edits in an activity must be provided through 513 * some other mechanism, such as an explicit "revert" or "undo" option.</p> 514 * 515 * <p>See the {@linkplain android.content.ContentProvider content package} for 516 * more information about content providers. These are a key aspect of how 517 * different activities invoke and propagate data between themselves.</p> 518 * 519 * <p>The Activity class also provides an API for managing internal persistent state 520 * associated with an activity. This can be used, for example, to remember 521 * the user's preferred initial display in a calendar (day view or week view) 522 * or the user's default home page in a web browser.</p> 523 * 524 * <p>Activity persistent state is managed 525 * with the method {@link #getPreferences}, 526 * allowing you to retrieve and 527 * modify a set of name/value pairs associated with the activity. To use 528 * preferences that are shared across multiple application components 529 * (activities, receivers, services, providers), you can use the underlying 530 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method 531 * to retrieve a preferences 532 * object stored under a specific name. 533 * (Note that it is not possible to share settings data across application 534 * packages -- for that you will need a content provider.)</p> 535 * 536 * <p>Here is an excerpt from a calendar activity that stores the user's 537 * preferred view mode in its persistent settings:</p> 538 * 539 * <pre class="prettyprint"> 540 * public class CalendarActivity extends Activity { 541 * ... 542 * 543 * static final int DAY_VIEW_MODE = 0; 544 * static final int WEEK_VIEW_MODE = 1; 545 * 546 * private SharedPreferences mPrefs; 547 * private int mCurViewMode; 548 * 549 * protected void onCreate(Bundle savedInstanceState) { 550 * super.onCreate(savedInstanceState); 551 * 552 * SharedPreferences mPrefs = getSharedPreferences(); 553 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE); 554 * } 555 * 556 * protected void onPause() { 557 * super.onPause(); 558 * 559 * SharedPreferences.Editor ed = mPrefs.edit(); 560 * ed.putInt("view_mode", mCurViewMode); 561 * ed.commit(); 562 * } 563 * } 564 * </pre> 565 * 566 * <a name="Permissions"></a> 567 * <h3>Permissions</h3> 568 * 569 * <p>The ability to start a particular Activity can be enforced when it is 570 * declared in its 571 * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} 572 * tag. By doing so, other applications will need to declare a corresponding 573 * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 574 * element in their own manifest to be able to start that activity. 575 * 576 * <p>When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 577 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 578 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the 579 * Activity access to the specific URIs in the Intent. Access will remain 580 * until the Activity has finished (it will remain across the hosting 581 * process being killed and other temporary destruction). As of 582 * {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity 583 * was already created and a new Intent is being delivered to 584 * {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added 585 * to the existing ones it holds. 586 * 587 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> 588 * document for more information on permissions and security in general. 589 * 590 * <a name="ProcessLifecycle"></a> 591 * <h3>Process Lifecycle</h3> 592 * 593 * <p>The Android system attempts to keep application process around for as 594 * long as possible, but eventually will need to remove old processes when 595 * memory runs low. As described in <a href="#ActivityLifecycle">Activity 596 * Lifecycle</a>, the decision about which process to remove is intimately 597 * tied to the state of the user's interaction with it. In general, there 598 * are four states a process can be in based on the activities running in it, 599 * listed here in order of importance. The system will kill less important 600 * processes (the last ones) before it resorts to killing more important 601 * processes (the first ones). 602 * 603 * <ol> 604 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen 605 * that the user is currently interacting with) is considered the most important. 606 * Its process will only be killed as a last resort, if it uses more memory 607 * than is available on the device. Generally at this point the device has 608 * reached a memory paging state, so this is required in order to keep the user 609 * interface responsive. 610 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user 611 * but not in the foreground, such as one sitting behind a foreground dialog) 612 * is considered extremely important and will not be killed unless that is 613 * required to keep the foreground activity running. 614 * <li> <p>A <b>background activity</b> (an activity that is not visible to 615 * the user and has been paused) is no longer critical, so the system may 616 * safely kill its process to reclaim memory for other foreground or 617 * visible processes. If its process needs to be killed, when the user navigates 618 * back to the activity (making it visible on the screen again), its 619 * {@link #onCreate} method will be called with the savedInstanceState it had previously 620 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same 621 * state as the user last left it. 622 * <li> <p>An <b>empty process</b> is one hosting no activities or other 623 * application components (such as {@link Service} or 624 * {@link android.content.BroadcastReceiver} classes). These are killed very 625 * quickly by the system as memory becomes low. For this reason, any 626 * background operation you do outside of an activity must be executed in the 627 * context of an activity BroadcastReceiver or Service to ensure that the system 628 * knows it needs to keep your process around. 629 * </ol> 630 * 631 * <p>Sometimes an Activity may need to do a long-running operation that exists 632 * independently of the activity lifecycle itself. An example may be a camera 633 * application that allows you to upload a picture to a web site. The upload 634 * may take a long time, and the application should allow the user to leave 635 * the application will it is executing. To accomplish this, your Activity 636 * should start a {@link Service} in which the upload takes place. This allows 637 * the system to properly prioritize your process (considering it to be more 638 * important than other non-visible applications) for the duration of the 639 * upload, independent of whether the original activity is paused, stopped, 640 * or finished. 641 */ 642public class Activity extends ContextThemeWrapper 643 implements LayoutInflater.Factory2, 644 Window.Callback, KeyEvent.Callback, 645 OnCreateContextMenuListener, ComponentCallbacks2 { 646 private static final String TAG = "Activity"; 647 private static final boolean DEBUG_LIFECYCLE = false; 648 649 /** Standard activity result: operation canceled. */ 650 public static final int RESULT_CANCELED = 0; 651 /** Standard activity result: operation succeeded. */ 652 public static final int RESULT_OK = -1; 653 /** Start of user-defined activity results. */ 654 public static final int RESULT_FIRST_USER = 1; 655 656 static final String FRAGMENTS_TAG = "android:fragments"; 657 658 private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; 659 private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; 660 private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; 661 private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; 662 private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; 663 664 private static class ManagedDialog { 665 Dialog mDialog; 666 Bundle mArgs; 667 } 668 private SparseArray<ManagedDialog> mManagedDialogs; 669 670 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. 671 private Instrumentation mInstrumentation; 672 private IBinder mToken; 673 private int mIdent; 674 /*package*/ String mEmbeddedID; 675 private Application mApplication; 676 /*package*/ Intent mIntent; 677 private ComponentName mComponent; 678 /*package*/ ActivityInfo mActivityInfo; 679 /*package*/ ActivityThread mMainThread; 680 Activity mParent; 681 boolean mCalled; 682 boolean mCheckedForLoaderManager; 683 boolean mLoadersStarted; 684 /*package*/ boolean mResumed; 685 private boolean mStopped; 686 boolean mFinished; 687 boolean mStartedActivity; 688 private boolean mDestroyed; 689 private boolean mDoReportFullyDrawn = true; 690 /** true if the activity is going through a transient pause */ 691 /*package*/ boolean mTemporaryPause = false; 692 /** true if the activity is being destroyed in order to recreate it with a new configuration */ 693 /*package*/ boolean mChangingConfigurations = false; 694 /*package*/ int mConfigChangeFlags; 695 /*package*/ Configuration mCurrentConfig; 696 private SearchManager mSearchManager; 697 private MenuInflater mMenuInflater; 698 699 static final class NonConfigurationInstances { 700 Object activity; 701 HashMap<String, Object> children; 702 ArrayList<Fragment> fragments; 703 HashMap<String, LoaderManagerImpl> loaders; 704 } 705 /* package */ NonConfigurationInstances mLastNonConfigurationInstances; 706 707 private Window mWindow; 708 709 private WindowManager mWindowManager; 710 /*package*/ View mDecor = null; 711 /*package*/ boolean mWindowAdded = false; 712 /*package*/ boolean mVisibleFromServer = false; 713 /*package*/ boolean mVisibleFromClient = true; 714 /*package*/ ActionBarImpl mActionBar = null; 715 private boolean mEnableDefaultActionBarUp; 716 717 private CharSequence mTitle; 718 private int mTitleColor = 0; 719 720 final FragmentManagerImpl mFragments = new FragmentManagerImpl(); 721 final FragmentContainer mContainer = new FragmentContainer() { 722 @Override 723 public View findViewById(int id) { 724 return Activity.this.findViewById(id); 725 } 726 }; 727 728 HashMap<String, LoaderManagerImpl> mAllLoaderManagers; 729 LoaderManagerImpl mLoaderManager; 730 731 private static final class ManagedCursor { 732 ManagedCursor(Cursor cursor) { 733 mCursor = cursor; 734 mReleased = false; 735 mUpdated = false; 736 } 737 738 private final Cursor mCursor; 739 private boolean mReleased; 740 private boolean mUpdated; 741 } 742 private final ArrayList<ManagedCursor> mManagedCursors = 743 new ArrayList<ManagedCursor>(); 744 745 // protected by synchronized (this) 746 int mResultCode = RESULT_CANCELED; 747 Intent mResultData = null; 748 private TranslucentConversionListener mTranslucentCallback; 749 750 private boolean mTitleReady = false; 751 752 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; 753 private SpannableStringBuilder mDefaultKeySsb = null; 754 755 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; 756 757 @SuppressWarnings("unused") 758 private final Object mInstanceTracker = StrictMode.trackActivity(this); 759 760 private Thread mUiThread; 761 final Handler mHandler = new Handler(); 762 763 /** Return the intent that started this activity. */ 764 public Intent getIntent() { 765 return mIntent; 766 } 767 768 /** 769 * Change the intent returned by {@link #getIntent}. This holds a 770 * reference to the given intent; it does not copy it. Often used in 771 * conjunction with {@link #onNewIntent}. 772 * 773 * @param newIntent The new Intent object to return from getIntent 774 * 775 * @see #getIntent 776 * @see #onNewIntent 777 */ 778 public void setIntent(Intent newIntent) { 779 mIntent = newIntent; 780 } 781 782 /** Return the application that owns this activity. */ 783 public final Application getApplication() { 784 return mApplication; 785 } 786 787 /** Is this activity embedded inside of another activity? */ 788 public final boolean isChild() { 789 return mParent != null; 790 } 791 792 /** Return the parent activity if this view is an embedded child. */ 793 public final Activity getParent() { 794 return mParent; 795 } 796 797 /** Retrieve the window manager for showing custom windows. */ 798 public WindowManager getWindowManager() { 799 return mWindowManager; 800 } 801 802 /** 803 * Retrieve the current {@link android.view.Window} for the activity. 804 * This can be used to directly access parts of the Window API that 805 * are not available through Activity/Screen. 806 * 807 * @return Window The current window, or null if the activity is not 808 * visual. 809 */ 810 public Window getWindow() { 811 return mWindow; 812 } 813 814 /** 815 * Return the LoaderManager for this fragment, creating it if needed. 816 */ 817 public LoaderManager getLoaderManager() { 818 if (mLoaderManager != null) { 819 return mLoaderManager; 820 } 821 mCheckedForLoaderManager = true; 822 mLoaderManager = getLoaderManager(null, mLoadersStarted, true); 823 return mLoaderManager; 824 } 825 826 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) { 827 if (mAllLoaderManagers == null) { 828 mAllLoaderManagers = new HashMap<String, LoaderManagerImpl>(); 829 } 830 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 831 if (lm == null) { 832 if (create) { 833 lm = new LoaderManagerImpl(who, this, started); 834 mAllLoaderManagers.put(who, lm); 835 } 836 } else { 837 lm.updateActivity(this); 838 } 839 return lm; 840 } 841 842 /** 843 * Calls {@link android.view.Window#getCurrentFocus} on the 844 * Window of this Activity to return the currently focused view. 845 * 846 * @return View The current View with focus or null. 847 * 848 * @see #getWindow 849 * @see android.view.Window#getCurrentFocus 850 */ 851 public View getCurrentFocus() { 852 return mWindow != null ? mWindow.getCurrentFocus() : null; 853 } 854 855 /** 856 * Called when the activity is starting. This is where most initialization 857 * should go: calling {@link #setContentView(int)} to inflate the 858 * activity's UI, using {@link #findViewById} to programmatically interact 859 * with widgets in the UI, calling 860 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve 861 * cursors for data being displayed, etc. 862 * 863 * <p>You can call {@link #finish} from within this function, in 864 * which case onDestroy() will be immediately called without any of the rest 865 * of the activity lifecycle ({@link #onStart}, {@link #onResume}, 866 * {@link #onPause}, etc) executing. 867 * 868 * <p><em>Derived classes must call through to the super class's 869 * implementation of this method. If they do not, an exception will be 870 * thrown.</em></p> 871 * 872 * @param savedInstanceState If the activity is being re-initialized after 873 * previously being shut down then this Bundle contains the data it most 874 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 875 * 876 * @see #onStart 877 * @see #onSaveInstanceState 878 * @see #onRestoreInstanceState 879 * @see #onPostCreate 880 */ 881 protected void onCreate(Bundle savedInstanceState) { 882 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); 883 if (mLastNonConfigurationInstances != null) { 884 mAllLoaderManagers = mLastNonConfigurationInstances.loaders; 885 } 886 if (mActivityInfo.parentActivityName != null) { 887 if (mActionBar == null) { 888 mEnableDefaultActionBarUp = true; 889 } else { 890 mActionBar.setDefaultDisplayHomeAsUpEnabled(true); 891 } 892 } 893 if (savedInstanceState != null) { 894 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); 895 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null 896 ? mLastNonConfigurationInstances.fragments : null); 897 } 898 mFragments.dispatchCreate(); 899 getApplication().dispatchActivityCreated(this, savedInstanceState); 900 mCalled = true; 901 } 902 903 /** 904 * The hook for {@link ActivityThread} to restore the state of this activity. 905 * 906 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and 907 * {@link #restoreManagedDialogs(android.os.Bundle)}. 908 * 909 * @param savedInstanceState contains the saved state 910 */ 911 final void performRestoreInstanceState(Bundle savedInstanceState) { 912 onRestoreInstanceState(savedInstanceState); 913 restoreManagedDialogs(savedInstanceState); 914 } 915 916 /** 917 * This method is called after {@link #onStart} when the activity is 918 * being re-initialized from a previously saved state, given here in 919 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} 920 * to restore their state, but it is sometimes convenient to do it here 921 * after all of the initialization has been done or to allow subclasses to 922 * decide whether to use your default implementation. The default 923 * implementation of this method performs a restore of any view state that 924 * had previously been frozen by {@link #onSaveInstanceState}. 925 * 926 * <p>This method is called between {@link #onStart} and 927 * {@link #onPostCreate}. 928 * 929 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. 930 * 931 * @see #onCreate 932 * @see #onPostCreate 933 * @see #onResume 934 * @see #onSaveInstanceState 935 */ 936 protected void onRestoreInstanceState(Bundle savedInstanceState) { 937 if (mWindow != null) { 938 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); 939 if (windowState != null) { 940 mWindow.restoreHierarchyState(windowState); 941 } 942 } 943 } 944 945 /** 946 * Restore the state of any saved managed dialogs. 947 * 948 * @param savedInstanceState The bundle to restore from. 949 */ 950 private void restoreManagedDialogs(Bundle savedInstanceState) { 951 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); 952 if (b == null) { 953 return; 954 } 955 956 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); 957 final int numDialogs = ids.length; 958 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); 959 for (int i = 0; i < numDialogs; i++) { 960 final Integer dialogId = ids[i]; 961 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); 962 if (dialogState != null) { 963 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate 964 // so tell createDialog() not to do it, otherwise we get an exception 965 final ManagedDialog md = new ManagedDialog(); 966 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); 967 md.mDialog = createDialog(dialogId, dialogState, md.mArgs); 968 if (md.mDialog != null) { 969 mManagedDialogs.put(dialogId, md); 970 onPrepareDialog(dialogId, md.mDialog, md.mArgs); 971 md.mDialog.onRestoreInstanceState(dialogState); 972 } 973 } 974 } 975 } 976 977 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { 978 final Dialog dialog = onCreateDialog(dialogId, args); 979 if (dialog == null) { 980 return null; 981 } 982 dialog.dispatchOnCreate(state); 983 return dialog; 984 } 985 986 private static String savedDialogKeyFor(int key) { 987 return SAVED_DIALOG_KEY_PREFIX + key; 988 } 989 990 private static String savedDialogArgsKeyFor(int key) { 991 return SAVED_DIALOG_ARGS_KEY_PREFIX + key; 992 } 993 994 /** 995 * Called when activity start-up is complete (after {@link #onStart} 996 * and {@link #onRestoreInstanceState} have been called). Applications will 997 * generally not implement this method; it is intended for system 998 * classes to do final initialization after application code has run. 999 * 1000 * <p><em>Derived classes must call through to the super class's 1001 * implementation of this method. If they do not, an exception will be 1002 * thrown.</em></p> 1003 * 1004 * @param savedInstanceState If the activity is being re-initialized after 1005 * previously being shut down then this Bundle contains the data it most 1006 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> 1007 * @see #onCreate 1008 */ 1009 protected void onPostCreate(Bundle savedInstanceState) { 1010 if (!isChild()) { 1011 mTitleReady = true; 1012 onTitleChanged(getTitle(), getTitleColor()); 1013 } 1014 mCalled = true; 1015 } 1016 1017 /** 1018 * Called after {@link #onCreate} — or after {@link #onRestart} when 1019 * the activity had been stopped, but is now again being displayed to the 1020 * user. It will be followed by {@link #onResume}. 1021 * 1022 * <p><em>Derived classes must call through to the super class's 1023 * implementation of this method. If they do not, an exception will be 1024 * thrown.</em></p> 1025 * 1026 * @see #onCreate 1027 * @see #onStop 1028 * @see #onResume 1029 */ 1030 protected void onStart() { 1031 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); 1032 mCalled = true; 1033 1034 if (!mLoadersStarted) { 1035 mLoadersStarted = true; 1036 if (mLoaderManager != null) { 1037 mLoaderManager.doStart(); 1038 } else if (!mCheckedForLoaderManager) { 1039 mLoaderManager = getLoaderManager(null, mLoadersStarted, false); 1040 } 1041 mCheckedForLoaderManager = true; 1042 } 1043 1044 getApplication().dispatchActivityStarted(this); 1045 } 1046 1047 /** 1048 * Called after {@link #onStop} when the current activity is being 1049 * re-displayed to the user (the user has navigated back to it). It will 1050 * be followed by {@link #onStart} and then {@link #onResume}. 1051 * 1052 * <p>For activities that are using raw {@link Cursor} objects (instead of 1053 * creating them through 1054 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, 1055 * this is usually the place 1056 * where the cursor should be requeried (because you had deactivated it in 1057 * {@link #onStop}. 1058 * 1059 * <p><em>Derived classes must call through to the super class's 1060 * implementation of this method. If they do not, an exception will be 1061 * thrown.</em></p> 1062 * 1063 * @see #onStop 1064 * @see #onStart 1065 * @see #onResume 1066 */ 1067 protected void onRestart() { 1068 mCalled = true; 1069 } 1070 1071 /** 1072 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or 1073 * {@link #onPause}, for your activity to start interacting with the user. 1074 * This is a good place to begin animations, open exclusive-access devices 1075 * (such as the camera), etc. 1076 * 1077 * <p>Keep in mind that onResume is not the best indicator that your activity 1078 * is visible to the user; a system window such as the keyguard may be in 1079 * front. Use {@link #onWindowFocusChanged} to know for certain that your 1080 * activity is visible to the user (for example, to resume a game). 1081 * 1082 * <p><em>Derived classes must call through to the super class's 1083 * implementation of this method. If they do not, an exception will be 1084 * thrown.</em></p> 1085 * 1086 * @see #onRestoreInstanceState 1087 * @see #onRestart 1088 * @see #onPostResume 1089 * @see #onPause 1090 */ 1091 protected void onResume() { 1092 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); 1093 getApplication().dispatchActivityResumed(this); 1094 mCalled = true; 1095 } 1096 1097 /** 1098 * Called when activity resume is complete (after {@link #onResume} has 1099 * been called). Applications will generally not implement this method; 1100 * it is intended for system classes to do final setup after application 1101 * resume code has run. 1102 * 1103 * <p><em>Derived classes must call through to the super class's 1104 * implementation of this method. If they do not, an exception will be 1105 * thrown.</em></p> 1106 * 1107 * @see #onResume 1108 */ 1109 protected void onPostResume() { 1110 final Window win = getWindow(); 1111 if (win != null) win.makeActive(); 1112 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); 1113 mCalled = true; 1114 } 1115 1116 /** 1117 * This is called for activities that set launchMode to "singleTop" in 1118 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} 1119 * flag when calling {@link #startActivity}. In either case, when the 1120 * activity is re-launched while at the top of the activity stack instead 1121 * of a new instance of the activity being started, onNewIntent() will be 1122 * called on the existing instance with the Intent that was used to 1123 * re-launch it. 1124 * 1125 * <p>An activity will always be paused before receiving a new intent, so 1126 * you can count on {@link #onResume} being called after this method. 1127 * 1128 * <p>Note that {@link #getIntent} still returns the original Intent. You 1129 * can use {@link #setIntent} to update it to this new Intent. 1130 * 1131 * @param intent The new intent that was started for the activity. 1132 * 1133 * @see #getIntent 1134 * @see #setIntent 1135 * @see #onResume 1136 */ 1137 protected void onNewIntent(Intent intent) { 1138 } 1139 1140 /** 1141 * The hook for {@link ActivityThread} to save the state of this activity. 1142 * 1143 * Calls {@link #onSaveInstanceState(android.os.Bundle)} 1144 * and {@link #saveManagedDialogs(android.os.Bundle)}. 1145 * 1146 * @param outState The bundle to save the state to. 1147 */ 1148 final void performSaveInstanceState(Bundle outState) { 1149 onSaveInstanceState(outState); 1150 saveManagedDialogs(outState); 1151 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState); 1152 } 1153 1154 /** 1155 * Called to retrieve per-instance state from an activity before being killed 1156 * so that the state can be restored in {@link #onCreate} or 1157 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method 1158 * will be passed to both). 1159 * 1160 * <p>This method is called before an activity may be killed so that when it 1161 * comes back some time in the future it can restore its state. For example, 1162 * if activity B is launched in front of activity A, and at some point activity 1163 * A is killed to reclaim resources, activity A will have a chance to save the 1164 * current state of its user interface via this method so that when the user 1165 * returns to activity A, the state of the user interface can be restored 1166 * via {@link #onCreate} or {@link #onRestoreInstanceState}. 1167 * 1168 * <p>Do not confuse this method with activity lifecycle callbacks such as 1169 * {@link #onPause}, which is always called when an activity is being placed 1170 * in the background or on its way to destruction, or {@link #onStop} which 1171 * is called before destruction. One example of when {@link #onPause} and 1172 * {@link #onStop} is called and not this method is when a user navigates back 1173 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} 1174 * on B because that particular instance will never be restored, so the 1175 * system avoids calling it. An example when {@link #onPause} is called and 1176 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: 1177 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't 1178 * killed during the lifetime of B since the state of the user interface of 1179 * A will stay intact. 1180 * 1181 * <p>The default implementation takes care of most of the UI per-instance 1182 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each 1183 * view in the hierarchy that has an id, and by saving the id of the currently 1184 * focused view (all of which is restored by the default implementation of 1185 * {@link #onRestoreInstanceState}). If you override this method to save additional 1186 * information not captured by each individual view, you will likely want to 1187 * call through to the default implementation, otherwise be prepared to save 1188 * all of the state of each view yourself. 1189 * 1190 * <p>If called, this method will occur before {@link #onStop}. There are 1191 * no guarantees about whether it will occur before or after {@link #onPause}. 1192 * 1193 * @param outState Bundle in which to place your saved state. 1194 * 1195 * @see #onCreate 1196 * @see #onRestoreInstanceState 1197 * @see #onPause 1198 */ 1199 protected void onSaveInstanceState(Bundle outState) { 1200 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); 1201 Parcelable p = mFragments.saveAllState(); 1202 if (p != null) { 1203 outState.putParcelable(FRAGMENTS_TAG, p); 1204 } 1205 getApplication().dispatchActivitySaveInstanceState(this, outState); 1206 } 1207 1208 /** 1209 * Save the state of any managed dialogs. 1210 * 1211 * @param outState place to store the saved state. 1212 */ 1213 private void saveManagedDialogs(Bundle outState) { 1214 if (mManagedDialogs == null) { 1215 return; 1216 } 1217 1218 final int numDialogs = mManagedDialogs.size(); 1219 if (numDialogs == 0) { 1220 return; 1221 } 1222 1223 Bundle dialogState = new Bundle(); 1224 1225 int[] ids = new int[mManagedDialogs.size()]; 1226 1227 // save each dialog's bundle, gather the ids 1228 for (int i = 0; i < numDialogs; i++) { 1229 final int key = mManagedDialogs.keyAt(i); 1230 ids[i] = key; 1231 final ManagedDialog md = mManagedDialogs.valueAt(i); 1232 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); 1233 if (md.mArgs != null) { 1234 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); 1235 } 1236 } 1237 1238 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); 1239 outState.putBundle(SAVED_DIALOGS_TAG, dialogState); 1240 } 1241 1242 1243 /** 1244 * Called as part of the activity lifecycle when an activity is going into 1245 * the background, but has not (yet) been killed. The counterpart to 1246 * {@link #onResume}. 1247 * 1248 * <p>When activity B is launched in front of activity A, this callback will 1249 * be invoked on A. B will not be created until A's {@link #onPause} returns, 1250 * so be sure to not do anything lengthy here. 1251 * 1252 * <p>This callback is mostly used for saving any persistent state the 1253 * activity is editing, to present a "edit in place" model to the user and 1254 * making sure nothing is lost if there are not enough resources to start 1255 * the new activity without first killing this one. This is also a good 1256 * place to do things like stop animations and other things that consume a 1257 * noticeable amount of CPU in order to make the switch to the next activity 1258 * as fast as possible, or to close resources that are exclusive access 1259 * such as the camera. 1260 * 1261 * <p>In situations where the system needs more memory it may kill paused 1262 * processes to reclaim resources. Because of this, you should be sure 1263 * that all of your state is saved by the time you return from 1264 * this function. In general {@link #onSaveInstanceState} is used to save 1265 * per-instance state in the activity and this method is used to store 1266 * global persistent data (in content providers, files, etc.) 1267 * 1268 * <p>After receiving this call you will usually receive a following call 1269 * to {@link #onStop} (after the next activity has been resumed and 1270 * displayed), however in some cases there will be a direct call back to 1271 * {@link #onResume} without going through the stopped state. 1272 * 1273 * <p><em>Derived classes must call through to the super class's 1274 * implementation of this method. If they do not, an exception will be 1275 * thrown.</em></p> 1276 * 1277 * @see #onResume 1278 * @see #onSaveInstanceState 1279 * @see #onStop 1280 */ 1281 protected void onPause() { 1282 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); 1283 getApplication().dispatchActivityPaused(this); 1284 mCalled = true; 1285 } 1286 1287 /** 1288 * Called as part of the activity lifecycle when an activity is about to go 1289 * into the background as the result of user choice. For example, when the 1290 * user presses the Home key, {@link #onUserLeaveHint} will be called, but 1291 * when an incoming phone call causes the in-call Activity to be automatically 1292 * brought to the foreground, {@link #onUserLeaveHint} will not be called on 1293 * the activity being interrupted. In cases when it is invoked, this method 1294 * is called right before the activity's {@link #onPause} callback. 1295 * 1296 * <p>This callback and {@link #onUserInteraction} are intended to help 1297 * activities manage status bar notifications intelligently; specifically, 1298 * for helping activities determine the proper time to cancel a notfication. 1299 * 1300 * @see #onUserInteraction() 1301 */ 1302 protected void onUserLeaveHint() { 1303 } 1304 1305 /** 1306 * Generate a new thumbnail for this activity. This method is called before 1307 * pausing the activity, and should draw into <var>outBitmap</var> the 1308 * imagery for the desired thumbnail in the dimensions of that bitmap. It 1309 * can use the given <var>canvas</var>, which is configured to draw into the 1310 * bitmap, for rendering if desired. 1311 * 1312 * <p>The default implementation returns fails and does not draw a thumbnail; 1313 * this will result in the platform creating its own thumbnail if needed. 1314 * 1315 * @param outBitmap The bitmap to contain the thumbnail. 1316 * @param canvas Can be used to render into the bitmap. 1317 * 1318 * @return Return true if you have drawn into the bitmap; otherwise after 1319 * you return it will be filled with a default thumbnail. 1320 * 1321 * @see #onCreateDescription 1322 * @see #onSaveInstanceState 1323 * @see #onPause 1324 */ 1325 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { 1326 return false; 1327 } 1328 1329 /** 1330 * Generate a new description for this activity. This method is called 1331 * before pausing the activity and can, if desired, return some textual 1332 * description of its current state to be displayed to the user. 1333 * 1334 * <p>The default implementation returns null, which will cause you to 1335 * inherit the description from the previous activity. If all activities 1336 * return null, generally the label of the top activity will be used as the 1337 * description. 1338 * 1339 * @return A description of what the user is doing. It should be short and 1340 * sweet (only a few words). 1341 * 1342 * @see #onCreateThumbnail 1343 * @see #onSaveInstanceState 1344 * @see #onPause 1345 */ 1346 public CharSequence onCreateDescription() { 1347 return null; 1348 } 1349 1350 /** 1351 * This is called when the user is requesting an assist, to build a full 1352 * {@link Intent#ACTION_ASSIST} Intent with all of the context of the current 1353 * application. You can override this method to place into the bundle anything 1354 * you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part 1355 * of the assist Intent. The default implementation does nothing. 1356 * 1357 * <p>This function will be called after any global assist callbacks that had 1358 * been registered with {@link Application#registerOnProvideAssistDataListener 1359 * Application.registerOnProvideAssistDataListener}. 1360 */ 1361 public void onProvideAssistData(Bundle data) { 1362 } 1363 1364 /** 1365 * Called when you are no longer visible to the user. You will next 1366 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, 1367 * depending on later user activity. 1368 * 1369 * <p>Note that this method may never be called, in low memory situations 1370 * where the system does not have enough memory to keep your activity's 1371 * process running after its {@link #onPause} method is called. 1372 * 1373 * <p><em>Derived classes must call through to the super class's 1374 * implementation of this method. If they do not, an exception will be 1375 * thrown.</em></p> 1376 * 1377 * @see #onRestart 1378 * @see #onResume 1379 * @see #onSaveInstanceState 1380 * @see #onDestroy 1381 */ 1382 protected void onStop() { 1383 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); 1384 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); 1385 getApplication().dispatchActivityStopped(this); 1386 mTranslucentCallback = null; 1387 mCalled = true; 1388 } 1389 1390 /** 1391 * Perform any final cleanup before an activity is destroyed. This can 1392 * happen either because the activity is finishing (someone called 1393 * {@link #finish} on it, or because the system is temporarily destroying 1394 * this instance of the activity to save space. You can distinguish 1395 * between these two scenarios with the {@link #isFinishing} method. 1396 * 1397 * <p><em>Note: do not count on this method being called as a place for 1398 * saving data! For example, if an activity is editing data in a content 1399 * provider, those edits should be committed in either {@link #onPause} or 1400 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to 1401 * free resources like threads that are associated with an activity, so 1402 * that a destroyed activity does not leave such things around while the 1403 * rest of its application is still running. There are situations where 1404 * the system will simply kill the activity's hosting process without 1405 * calling this method (or any others) in it, so it should not be used to 1406 * do things that are intended to remain around after the process goes 1407 * away. 1408 * 1409 * <p><em>Derived classes must call through to the super class's 1410 * implementation of this method. If they do not, an exception will be 1411 * thrown.</em></p> 1412 * 1413 * @see #onPause 1414 * @see #onStop 1415 * @see #finish 1416 * @see #isFinishing 1417 */ 1418 protected void onDestroy() { 1419 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); 1420 mCalled = true; 1421 1422 // dismiss any dialogs we are managing. 1423 if (mManagedDialogs != null) { 1424 final int numDialogs = mManagedDialogs.size(); 1425 for (int i = 0; i < numDialogs; i++) { 1426 final ManagedDialog md = mManagedDialogs.valueAt(i); 1427 if (md.mDialog.isShowing()) { 1428 md.mDialog.dismiss(); 1429 } 1430 } 1431 mManagedDialogs = null; 1432 } 1433 1434 // close any cursors we are managing. 1435 synchronized (mManagedCursors) { 1436 int numCursors = mManagedCursors.size(); 1437 for (int i = 0; i < numCursors; i++) { 1438 ManagedCursor c = mManagedCursors.get(i); 1439 if (c != null) { 1440 c.mCursor.close(); 1441 } 1442 } 1443 mManagedCursors.clear(); 1444 } 1445 1446 // Close any open search dialog 1447 if (mSearchManager != null) { 1448 mSearchManager.stopSearch(); 1449 } 1450 1451 getApplication().dispatchActivityDestroyed(this); 1452 } 1453 1454 /** 1455 * Report to the system that your app is now fully drawn. This is only used 1456 * to help instrument app launch times, so that the app can report when it is 1457 * fully in a usable state; without this, all the system can determine is when 1458 * its window is first drawn and displayed. To participate in app launch time 1459 * measurement, you should always call this method after first launch (when 1460 * {@link #onCreate(android.os.Bundle)} is called) at the point where you have 1461 * entirely drawn your UI and populated with all of the significant data. You 1462 * can safely call this method any time after first launch as well, in which case 1463 * it will simply be ignored. 1464 */ 1465 public void reportFullyDrawn() { 1466 if (mDoReportFullyDrawn) { 1467 mDoReportFullyDrawn = false; 1468 try { 1469 ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); 1470 } catch (RemoteException e) { 1471 } 1472 } 1473 } 1474 1475 /** 1476 * Called by the system when the device configuration changes while your 1477 * activity is running. Note that this will <em>only</em> be called if 1478 * you have selected configurations you would like to handle with the 1479 * {@link android.R.attr#configChanges} attribute in your manifest. If 1480 * any configuration change occurs that is not selected to be reported 1481 * by that attribute, then instead of reporting it the system will stop 1482 * and restart the activity (to have it launched with the new 1483 * configuration). 1484 * 1485 * <p>At the time that this function has been called, your Resources 1486 * object will have been updated to return resource values matching the 1487 * new configuration. 1488 * 1489 * @param newConfig The new device configuration. 1490 */ 1491 public void onConfigurationChanged(Configuration newConfig) { 1492 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); 1493 mCalled = true; 1494 1495 mFragments.dispatchConfigurationChanged(newConfig); 1496 1497 if (mWindow != null) { 1498 // Pass the configuration changed event to the window 1499 mWindow.onConfigurationChanged(newConfig); 1500 } 1501 1502 if (mActionBar != null) { 1503 // Do this last; the action bar will need to access 1504 // view changes from above. 1505 mActionBar.onConfigurationChanged(newConfig); 1506 } 1507 } 1508 1509 /** 1510 * If this activity is being destroyed because it can not handle a 1511 * configuration parameter being changed (and thus its 1512 * {@link #onConfigurationChanged(Configuration)} method is 1513 * <em>not</em> being called), then you can use this method to discover 1514 * the set of changes that have occurred while in the process of being 1515 * destroyed. Note that there is no guarantee that these will be 1516 * accurate (other changes could have happened at any time), so you should 1517 * only use this as an optimization hint. 1518 * 1519 * @return Returns a bit field of the configuration parameters that are 1520 * changing, as defined by the {@link android.content.res.Configuration} 1521 * class. 1522 */ 1523 public int getChangingConfigurations() { 1524 return mConfigChangeFlags; 1525 } 1526 1527 /** 1528 * Retrieve the non-configuration instance data that was previously 1529 * returned by {@link #onRetainNonConfigurationInstance()}. This will 1530 * be available from the initial {@link #onCreate} and 1531 * {@link #onStart} calls to the new instance, allowing you to extract 1532 * any useful dynamic state from the previous instance. 1533 * 1534 * <p>Note that the data you retrieve here should <em>only</em> be used 1535 * as an optimization for handling configuration changes. You should always 1536 * be able to handle getting a null pointer back, and an activity must 1537 * still be able to restore itself to its previous state (through the 1538 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1539 * function returns null. 1540 * 1541 * @return Returns the object previously returned by 1542 * {@link #onRetainNonConfigurationInstance()}. 1543 * 1544 * @deprecated Use the new {@link Fragment} API 1545 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1546 * available on older platforms through the Android compatibility package. 1547 */ 1548 @Deprecated 1549 public Object getLastNonConfigurationInstance() { 1550 return mLastNonConfigurationInstances != null 1551 ? mLastNonConfigurationInstances.activity : null; 1552 } 1553 1554 /** 1555 * Called by the system, as part of destroying an 1556 * activity due to a configuration change, when it is known that a new 1557 * instance will immediately be created for the new configuration. You 1558 * can return any object you like here, including the activity instance 1559 * itself, which can later be retrieved by calling 1560 * {@link #getLastNonConfigurationInstance()} in the new activity 1561 * instance. 1562 * 1563 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1564 * or later, consider instead using a {@link Fragment} with 1565 * {@link Fragment#setRetainInstance(boolean) 1566 * Fragment.setRetainInstance(boolean}.</em> 1567 * 1568 * <p>This function is called purely as an optimization, and you must 1569 * not rely on it being called. When it is called, a number of guarantees 1570 * will be made to help optimize configuration switching: 1571 * <ul> 1572 * <li> The function will be called between {@link #onStop} and 1573 * {@link #onDestroy}. 1574 * <li> A new instance of the activity will <em>always</em> be immediately 1575 * created after this one's {@link #onDestroy()} is called. In particular, 1576 * <em>no</em> messages will be dispatched during this time (when the returned 1577 * object does not have an activity to be associated with). 1578 * <li> The object you return here will <em>always</em> be available from 1579 * the {@link #getLastNonConfigurationInstance()} method of the following 1580 * activity instance as described there. 1581 * </ul> 1582 * 1583 * <p>These guarantees are designed so that an activity can use this API 1584 * to propagate extensive state from the old to new activity instance, from 1585 * loaded bitmaps, to network connections, to evenly actively running 1586 * threads. Note that you should <em>not</em> propagate any data that 1587 * may change based on the configuration, including any data loaded from 1588 * resources such as strings, layouts, or drawables. 1589 * 1590 * <p>The guarantee of no message handling during the switch to the next 1591 * activity simplifies use with active objects. For example if your retained 1592 * state is an {@link android.os.AsyncTask} you are guaranteed that its 1593 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will 1594 * not be called from the call here until you execute the next instance's 1595 * {@link #onCreate(Bundle)}. (Note however that there is of course no such 1596 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is 1597 * running in a separate thread.) 1598 * 1599 * @return Return any Object holding the desired state to propagate to the 1600 * next activity instance. 1601 * 1602 * @deprecated Use the new {@link Fragment} API 1603 * {@link Fragment#setRetainInstance(boolean)} instead; this is also 1604 * available on older platforms through the Android compatibility package. 1605 */ 1606 public Object onRetainNonConfigurationInstance() { 1607 return null; 1608 } 1609 1610 /** 1611 * Retrieve the non-configuration instance data that was previously 1612 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will 1613 * be available from the initial {@link #onCreate} and 1614 * {@link #onStart} calls to the new instance, allowing you to extract 1615 * any useful dynamic state from the previous instance. 1616 * 1617 * <p>Note that the data you retrieve here should <em>only</em> be used 1618 * as an optimization for handling configuration changes. You should always 1619 * be able to handle getting a null pointer back, and an activity must 1620 * still be able to restore itself to its previous state (through the 1621 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this 1622 * function returns null. 1623 * 1624 * @return Returns the object previously returned by 1625 * {@link #onRetainNonConfigurationChildInstances()} 1626 */ 1627 HashMap<String, Object> getLastNonConfigurationChildInstances() { 1628 return mLastNonConfigurationInstances != null 1629 ? mLastNonConfigurationInstances.children : null; 1630 } 1631 1632 /** 1633 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that 1634 * it should return either a mapping from child activity id strings to arbitrary objects, 1635 * or null. This method is intended to be used by Activity framework subclasses that control a 1636 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply 1637 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. 1638 */ 1639 HashMap<String,Object> onRetainNonConfigurationChildInstances() { 1640 return null; 1641 } 1642 1643 NonConfigurationInstances retainNonConfigurationInstances() { 1644 Object activity = onRetainNonConfigurationInstance(); 1645 HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); 1646 ArrayList<Fragment> fragments = mFragments.retainNonConfig(); 1647 boolean retainLoaders = false; 1648 if (mAllLoaderManagers != null) { 1649 // prune out any loader managers that were already stopped and so 1650 // have nothing useful to retain. 1651 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()]; 1652 mAllLoaderManagers.values().toArray(loaders); 1653 if (loaders != null) { 1654 for (int i=0; i<loaders.length; i++) { 1655 LoaderManagerImpl lm = loaders[i]; 1656 if (lm.mRetaining) { 1657 retainLoaders = true; 1658 } else { 1659 lm.doDestroy(); 1660 mAllLoaderManagers.remove(lm.mWho); 1661 } 1662 } 1663 } 1664 } 1665 if (activity == null && children == null && fragments == null && !retainLoaders) { 1666 return null; 1667 } 1668 1669 NonConfigurationInstances nci = new NonConfigurationInstances(); 1670 nci.activity = activity; 1671 nci.children = children; 1672 nci.fragments = fragments; 1673 nci.loaders = mAllLoaderManagers; 1674 return nci; 1675 } 1676 1677 public void onLowMemory() { 1678 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); 1679 mCalled = true; 1680 mFragments.dispatchLowMemory(); 1681 } 1682 1683 public void onTrimMemory(int level) { 1684 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); 1685 mCalled = true; 1686 mFragments.dispatchTrimMemory(level); 1687 } 1688 1689 /** 1690 * Return the FragmentManager for interacting with fragments associated 1691 * with this activity. 1692 */ 1693 public FragmentManager getFragmentManager() { 1694 return mFragments; 1695 } 1696 1697 void invalidateFragment(String who) { 1698 //Log.v(TAG, "invalidateFragmentIndex: index=" + index); 1699 if (mAllLoaderManagers != null) { 1700 LoaderManagerImpl lm = mAllLoaderManagers.get(who); 1701 if (lm != null && !lm.mRetaining) { 1702 lm.doDestroy(); 1703 mAllLoaderManagers.remove(who); 1704 } 1705 } 1706 } 1707 1708 /** 1709 * Called when a Fragment is being attached to this activity, immediately 1710 * after the call to its {@link Fragment#onAttach Fragment.onAttach()} 1711 * method and before {@link Fragment#onCreate Fragment.onCreate()}. 1712 */ 1713 public void onAttachFragment(Fragment fragment) { 1714 } 1715 1716 /** 1717 * Wrapper around 1718 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1719 * that gives the resulting {@link Cursor} to call 1720 * {@link #startManagingCursor} so that the activity will manage its 1721 * lifecycle for you. 1722 * 1723 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1724 * or later, consider instead using {@link LoaderManager} instead, available 1725 * via {@link #getLoaderManager()}.</em> 1726 * 1727 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1728 * this method, because the activity will do that for you at the appropriate time. However, if 1729 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1730 * not</em> automatically close the cursor and, in that case, you must call 1731 * {@link Cursor#close()}.</p> 1732 * 1733 * @param uri The URI of the content provider to query. 1734 * @param projection List of columns to return. 1735 * @param selection SQL WHERE clause. 1736 * @param sortOrder SQL ORDER BY clause. 1737 * 1738 * @return The Cursor that was returned by query(). 1739 * 1740 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1741 * @see #startManagingCursor 1742 * @hide 1743 * 1744 * @deprecated Use {@link CursorLoader} instead. 1745 */ 1746 @Deprecated 1747 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1748 String sortOrder) { 1749 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); 1750 if (c != null) { 1751 startManagingCursor(c); 1752 } 1753 return c; 1754 } 1755 1756 /** 1757 * Wrapper around 1758 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} 1759 * that gives the resulting {@link Cursor} to call 1760 * {@link #startManagingCursor} so that the activity will manage its 1761 * lifecycle for you. 1762 * 1763 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1764 * or later, consider instead using {@link LoaderManager} instead, available 1765 * via {@link #getLoaderManager()}.</em> 1766 * 1767 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using 1768 * this method, because the activity will do that for you at the appropriate time. However, if 1769 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will 1770 * not</em> automatically close the cursor and, in that case, you must call 1771 * {@link Cursor#close()}.</p> 1772 * 1773 * @param uri The URI of the content provider to query. 1774 * @param projection List of columns to return. 1775 * @param selection SQL WHERE clause. 1776 * @param selectionArgs The arguments to selection, if any ?s are pesent 1777 * @param sortOrder SQL ORDER BY clause. 1778 * 1779 * @return The Cursor that was returned by query(). 1780 * 1781 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) 1782 * @see #startManagingCursor 1783 * 1784 * @deprecated Use {@link CursorLoader} instead. 1785 */ 1786 @Deprecated 1787 public final Cursor managedQuery(Uri uri, String[] projection, String selection, 1788 String[] selectionArgs, String sortOrder) { 1789 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); 1790 if (c != null) { 1791 startManagingCursor(c); 1792 } 1793 return c; 1794 } 1795 1796 /** 1797 * This method allows the activity to take care of managing the given 1798 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. 1799 * That is, when the activity is stopped it will automatically call 1800 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted 1801 * it will call {@link Cursor#requery} for you. When the activity is 1802 * destroyed, all managed Cursors will be closed automatically. 1803 * 1804 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 1805 * or later, consider instead using {@link LoaderManager} instead, available 1806 * via {@link #getLoaderManager()}.</em> 1807 * 1808 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from 1809 * {@link #managedQuery}, because the activity will do that for you at the appropriate time. 1810 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system 1811 * <em>will not</em> automatically close the cursor and, in that case, you must call 1812 * {@link Cursor#close()}.</p> 1813 * 1814 * @param c The Cursor to be managed. 1815 * 1816 * @see #managedQuery(android.net.Uri , String[], String, String[], String) 1817 * @see #stopManagingCursor 1818 * 1819 * @deprecated Use the new {@link android.content.CursorLoader} class with 1820 * {@link LoaderManager} instead; this is also 1821 * available on older platforms through the Android compatibility package. 1822 */ 1823 @Deprecated 1824 public void startManagingCursor(Cursor c) { 1825 synchronized (mManagedCursors) { 1826 mManagedCursors.add(new ManagedCursor(c)); 1827 } 1828 } 1829 1830 /** 1831 * Given a Cursor that was previously given to 1832 * {@link #startManagingCursor}, stop the activity's management of that 1833 * cursor. 1834 * 1835 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query, 1836 * the system <em>will not</em> automatically close the cursor and you must call 1837 * {@link Cursor#close()}.</p> 1838 * 1839 * @param c The Cursor that was being managed. 1840 * 1841 * @see #startManagingCursor 1842 * 1843 * @deprecated Use the new {@link android.content.CursorLoader} class with 1844 * {@link LoaderManager} instead; this is also 1845 * available on older platforms through the Android compatibility package. 1846 */ 1847 @Deprecated 1848 public void stopManagingCursor(Cursor c) { 1849 synchronized (mManagedCursors) { 1850 final int N = mManagedCursors.size(); 1851 for (int i=0; i<N; i++) { 1852 ManagedCursor mc = mManagedCursors.get(i); 1853 if (mc.mCursor == c) { 1854 mManagedCursors.remove(i); 1855 break; 1856 } 1857 } 1858 } 1859 } 1860 1861 /** 1862 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} 1863 * this is a no-op. 1864 * @hide 1865 */ 1866 @Deprecated 1867 public void setPersistent(boolean isPersistent) { 1868 } 1869 1870 /** 1871 * Finds a view that was identified by the id attribute from the XML that 1872 * was processed in {@link #onCreate}. 1873 * 1874 * @return The view if found or null otherwise. 1875 */ 1876 public View findViewById(int id) { 1877 return getWindow().findViewById(id); 1878 } 1879 1880 /** 1881 * Retrieve a reference to this activity's ActionBar. 1882 * 1883 * @return The Activity's ActionBar, or null if it does not have one. 1884 */ 1885 public ActionBar getActionBar() { 1886 initActionBar(); 1887 return mActionBar; 1888 } 1889 1890 /** 1891 * Creates a new ActionBar, locates the inflated ActionBarView, 1892 * initializes the ActionBar with the view, and sets mActionBar. 1893 */ 1894 private void initActionBar() { 1895 Window window = getWindow(); 1896 1897 // Initializing the window decor can change window feature flags. 1898 // Make sure that we have the correct set before performing the test below. 1899 window.getDecorView(); 1900 1901 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { 1902 return; 1903 } 1904 1905 mActionBar = new ActionBarImpl(this); 1906 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); 1907 1908 mWindow.setDefaultIcon(mActivityInfo.getIconResource()); 1909 mWindow.setDefaultLogo(mActivityInfo.getLogoResource()); 1910 } 1911 1912 /** 1913 * Set the activity content from a layout resource. The resource will be 1914 * inflated, adding all top-level views to the activity. 1915 * 1916 * @param layoutResID Resource ID to be inflated. 1917 * 1918 * @see #setContentView(android.view.View) 1919 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1920 */ 1921 public void setContentView(int layoutResID) { 1922 getWindow().setContentView(layoutResID); 1923 initActionBar(); 1924 } 1925 1926 /** 1927 * Set the activity content to an explicit view. This view is placed 1928 * directly into the activity's view hierarchy. It can itself be a complex 1929 * view hierarchy. When calling this method, the layout parameters of the 1930 * specified view are ignored. Both the width and the height of the view are 1931 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use 1932 * your own layout parameters, invoke 1933 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} 1934 * instead. 1935 * 1936 * @param view The desired content to display. 1937 * 1938 * @see #setContentView(int) 1939 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) 1940 */ 1941 public void setContentView(View view) { 1942 getWindow().setContentView(view); 1943 initActionBar(); 1944 } 1945 1946 /** 1947 * Set the activity content to an explicit view. This view is placed 1948 * directly into the activity's view hierarchy. It can itself be a complex 1949 * view hierarchy. 1950 * 1951 * @param view The desired content to display. 1952 * @param params Layout parameters for the view. 1953 * 1954 * @see #setContentView(android.view.View) 1955 * @see #setContentView(int) 1956 */ 1957 public void setContentView(View view, ViewGroup.LayoutParams params) { 1958 getWindow().setContentView(view, params); 1959 initActionBar(); 1960 } 1961 1962 /** 1963 * Add an additional content view to the activity. Added after any existing 1964 * ones in the activity -- existing views are NOT removed. 1965 * 1966 * @param view The desired content to display. 1967 * @param params Layout parameters for the view. 1968 */ 1969 public void addContentView(View view, ViewGroup.LayoutParams params) { 1970 getWindow().addContentView(view, params); 1971 initActionBar(); 1972 } 1973 1974 /** 1975 * Sets whether this activity is finished when touched outside its window's 1976 * bounds. 1977 */ 1978 public void setFinishOnTouchOutside(boolean finish) { 1979 mWindow.setCloseOnTouchOutside(finish); 1980 } 1981 1982 /** 1983 * Use with {@link #setDefaultKeyMode} to turn off default handling of 1984 * keys. 1985 * 1986 * @see #setDefaultKeyMode 1987 */ 1988 static public final int DEFAULT_KEYS_DISABLE = 0; 1989 /** 1990 * Use with {@link #setDefaultKeyMode} to launch the dialer during default 1991 * key handling. 1992 * 1993 * @see #setDefaultKeyMode 1994 */ 1995 static public final int DEFAULT_KEYS_DIALER = 1; 1996 /** 1997 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in 1998 * default key handling. 1999 * 2000 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. 2001 * 2002 * @see #setDefaultKeyMode 2003 */ 2004 static public final int DEFAULT_KEYS_SHORTCUT = 2; 2005 /** 2006 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2007 * will start an application-defined search. (If the application or activity does not 2008 * actually define a search, the the keys will be ignored.) 2009 * 2010 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2011 * 2012 * @see #setDefaultKeyMode 2013 */ 2014 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; 2015 2016 /** 2017 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes 2018 * will start a global search (typically web search, but some platforms may define alternate 2019 * methods for global search) 2020 * 2021 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. 2022 * 2023 * @see #setDefaultKeyMode 2024 */ 2025 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; 2026 2027 /** 2028 * Select the default key handling for this activity. This controls what 2029 * will happen to key events that are not otherwise handled. The default 2030 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the 2031 * floor. Other modes allow you to launch the dialer 2032 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options 2033 * menu without requiring the menu key be held down 2034 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 2035 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). 2036 * 2037 * <p>Note that the mode selected here does not impact the default 2038 * handling of system keys, such as the "back" and "menu" keys, and your 2039 * activity and its views always get a first chance to receive and handle 2040 * all application keys. 2041 * 2042 * @param mode The desired default key mode constant. 2043 * 2044 * @see #DEFAULT_KEYS_DISABLE 2045 * @see #DEFAULT_KEYS_DIALER 2046 * @see #DEFAULT_KEYS_SHORTCUT 2047 * @see #DEFAULT_KEYS_SEARCH_LOCAL 2048 * @see #DEFAULT_KEYS_SEARCH_GLOBAL 2049 * @see #onKeyDown 2050 */ 2051 public final void setDefaultKeyMode(int mode) { 2052 mDefaultKeyMode = mode; 2053 2054 // Some modes use a SpannableStringBuilder to track & dispatch input events 2055 // This list must remain in sync with the switch in onKeyDown() 2056 switch (mode) { 2057 case DEFAULT_KEYS_DISABLE: 2058 case DEFAULT_KEYS_SHORTCUT: 2059 mDefaultKeySsb = null; // not used in these modes 2060 break; 2061 case DEFAULT_KEYS_DIALER: 2062 case DEFAULT_KEYS_SEARCH_LOCAL: 2063 case DEFAULT_KEYS_SEARCH_GLOBAL: 2064 mDefaultKeySsb = new SpannableStringBuilder(); 2065 Selection.setSelection(mDefaultKeySsb,0); 2066 break; 2067 default: 2068 throw new IllegalArgumentException(); 2069 } 2070 } 2071 2072 /** 2073 * Called when a key was pressed down and not handled by any of the views 2074 * inside of the activity. So, for example, key presses while the cursor 2075 * is inside a TextView will not trigger the event (unless it is a navigation 2076 * to another object) because TextView handles its own key presses. 2077 * 2078 * <p>If the focused view didn't want this event, this method is called. 2079 * 2080 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} 2081 * by calling {@link #onBackPressed()}, though the behavior varies based 2082 * on the application compatibility mode: for 2083 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, 2084 * it will set up the dispatch to call {@link #onKeyUp} where the action 2085 * will be performed; for earlier applications, it will perform the 2086 * action immediately in on-down, as those versions of the platform 2087 * behaved. 2088 * 2089 * <p>Other additional default key handling may be performed 2090 * if configured with {@link #setDefaultKeyMode}. 2091 * 2092 * @return Return <code>true</code> to prevent this event from being propagated 2093 * further, or <code>false</code> to indicate that you have not handled 2094 * this event and it should continue to be propagated. 2095 * @see #onKeyUp 2096 * @see android.view.KeyEvent 2097 */ 2098 public boolean onKeyDown(int keyCode, KeyEvent event) { 2099 if (keyCode == KeyEvent.KEYCODE_BACK) { 2100 if (getApplicationInfo().targetSdkVersion 2101 >= Build.VERSION_CODES.ECLAIR) { 2102 event.startTracking(); 2103 } else { 2104 onBackPressed(); 2105 } 2106 return true; 2107 } 2108 2109 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { 2110 return false; 2111 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { 2112 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 2113 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { 2114 return true; 2115 } 2116 return false; 2117 } else { 2118 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* 2119 boolean clearSpannable = false; 2120 boolean handled; 2121 if ((event.getRepeatCount() != 0) || event.isSystem()) { 2122 clearSpannable = true; 2123 handled = false; 2124 } else { 2125 handled = TextKeyListener.getInstance().onKeyDown( 2126 null, mDefaultKeySsb, keyCode, event); 2127 if (handled && mDefaultKeySsb.length() > 0) { 2128 // something useable has been typed - dispatch it now. 2129 2130 final String str = mDefaultKeySsb.toString(); 2131 clearSpannable = true; 2132 2133 switch (mDefaultKeyMode) { 2134 case DEFAULT_KEYS_DIALER: 2135 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); 2136 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2137 startActivity(intent); 2138 break; 2139 case DEFAULT_KEYS_SEARCH_LOCAL: 2140 startSearch(str, false, null, false); 2141 break; 2142 case DEFAULT_KEYS_SEARCH_GLOBAL: 2143 startSearch(str, false, null, true); 2144 break; 2145 } 2146 } 2147 } 2148 if (clearSpannable) { 2149 mDefaultKeySsb.clear(); 2150 mDefaultKeySsb.clearSpans(); 2151 Selection.setSelection(mDefaultKeySsb,0); 2152 } 2153 return handled; 2154 } 2155 } 2156 2157 /** 2158 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) 2159 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle 2160 * the event). 2161 */ 2162 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2163 return false; 2164 } 2165 2166 /** 2167 * Called when a key was released and not handled by any of the views 2168 * inside of the activity. So, for example, key presses while the cursor 2169 * is inside a TextView will not trigger the event (unless it is a navigation 2170 * to another object) because TextView handles its own key presses. 2171 * 2172 * <p>The default implementation handles KEYCODE_BACK to stop the activity 2173 * and go back. 2174 * 2175 * @return Return <code>true</code> to prevent this event from being propagated 2176 * further, or <code>false</code> to indicate that you have not handled 2177 * this event and it should continue to be propagated. 2178 * @see #onKeyDown 2179 * @see KeyEvent 2180 */ 2181 public boolean onKeyUp(int keyCode, KeyEvent event) { 2182 if (getApplicationInfo().targetSdkVersion 2183 >= Build.VERSION_CODES.ECLAIR) { 2184 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() 2185 && !event.isCanceled()) { 2186 onBackPressed(); 2187 return true; 2188 } 2189 } 2190 return false; 2191 } 2192 2193 /** 2194 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) 2195 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle 2196 * the event). 2197 */ 2198 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2199 return false; 2200 } 2201 2202 /** 2203 * Called when the activity has detected the user's press of the back 2204 * key. The default implementation simply finishes the current activity, 2205 * but you can override this to do whatever you want. 2206 */ 2207 public void onBackPressed() { 2208 if (!mFragments.popBackStackImmediate()) { 2209 finish(); 2210 } 2211 } 2212 2213 /** 2214 * Called when a key shortcut event is not handled by any of the views in the Activity. 2215 * Override this method to implement global key shortcuts for the Activity. 2216 * Key shortcuts can also be implemented by setting the 2217 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. 2218 * 2219 * @param keyCode The value in event.getKeyCode(). 2220 * @param event Description of the key event. 2221 * @return True if the key shortcut was handled. 2222 */ 2223 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2224 return false; 2225 } 2226 2227 /** 2228 * Called when a touch screen event was not handled by any of the views 2229 * under it. This is most useful to process touch events that happen 2230 * outside of your window bounds, where there is no view to receive it. 2231 * 2232 * @param event The touch screen event being processed. 2233 * 2234 * @return Return true if you have consumed the event, false if you haven't. 2235 * The default implementation always returns false. 2236 */ 2237 public boolean onTouchEvent(MotionEvent event) { 2238 if (mWindow.shouldCloseOnTouch(this, event)) { 2239 finish(); 2240 return true; 2241 } 2242 2243 return false; 2244 } 2245 2246 /** 2247 * Called when the trackball was moved and not handled by any of the 2248 * views inside of the activity. So, for example, if the trackball moves 2249 * while focus is on a button, you will receive a call here because 2250 * buttons do not normally do anything with trackball events. The call 2251 * here happens <em>before</em> trackball movements are converted to 2252 * DPAD key events, which then get sent back to the view hierarchy, and 2253 * will be processed at the point for things like focus navigation. 2254 * 2255 * @param event The trackball event being processed. 2256 * 2257 * @return Return true if you have consumed the event, false if you haven't. 2258 * The default implementation always returns false. 2259 */ 2260 public boolean onTrackballEvent(MotionEvent event) { 2261 return false; 2262 } 2263 2264 /** 2265 * Called when a generic motion event was not handled by any of the 2266 * views inside of the activity. 2267 * <p> 2268 * Generic motion events describe joystick movements, mouse hovers, track pad 2269 * touches, scroll wheel movements and other input events. The 2270 * {@link MotionEvent#getSource() source} of the motion event specifies 2271 * the class of input that was received. Implementations of this method 2272 * must examine the bits in the source before processing the event. 2273 * The following code example shows how this is done. 2274 * </p><p> 2275 * Generic motion events with source class 2276 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER} 2277 * are delivered to the view under the pointer. All other generic motion events are 2278 * delivered to the focused view. 2279 * </p><p> 2280 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to 2281 * handle this event. 2282 * </p> 2283 * 2284 * @param event The generic motion event being processed. 2285 * 2286 * @return Return true if you have consumed the event, false if you haven't. 2287 * The default implementation always returns false. 2288 */ 2289 public boolean onGenericMotionEvent(MotionEvent event) { 2290 return false; 2291 } 2292 2293 /** 2294 * Called whenever a key, touch, or trackball event is dispatched to the 2295 * activity. Implement this method if you wish to know that the user has 2296 * interacted with the device in some way while your activity is running. 2297 * This callback and {@link #onUserLeaveHint} are intended to help 2298 * activities manage status bar notifications intelligently; specifically, 2299 * for helping activities determine the proper time to cancel a notfication. 2300 * 2301 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will 2302 * be accompanied by calls to {@link #onUserInteraction}. This 2303 * ensures that your activity will be told of relevant user activity such 2304 * as pulling down the notification pane and touching an item there. 2305 * 2306 * <p>Note that this callback will be invoked for the touch down action 2307 * that begins a touch gesture, but may not be invoked for the touch-moved 2308 * and touch-up actions that follow. 2309 * 2310 * @see #onUserLeaveHint() 2311 */ 2312 public void onUserInteraction() { 2313 } 2314 2315 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 2316 // Update window manager if: we have a view, that view is 2317 // attached to its parent (which will be a RootView), and 2318 // this activity is not embedded. 2319 if (mParent == null) { 2320 View decor = mDecor; 2321 if (decor != null && decor.getParent() != null) { 2322 getWindowManager().updateViewLayout(decor, params); 2323 } 2324 } 2325 } 2326 2327 public void onContentChanged() { 2328 } 2329 2330 /** 2331 * Called when the current {@link Window} of the activity gains or loses 2332 * focus. This is the best indicator of whether this activity is visible 2333 * to the user. The default implementation clears the key tracking 2334 * state, so should always be called. 2335 * 2336 * <p>Note that this provides information about global focus state, which 2337 * is managed independently of activity lifecycles. As such, while focus 2338 * changes will generally have some relation to lifecycle changes (an 2339 * activity that is stopped will not generally get window focus), you 2340 * should not rely on any particular order between the callbacks here and 2341 * those in the other lifecycle methods such as {@link #onResume}. 2342 * 2343 * <p>As a general rule, however, a resumed activity will have window 2344 * focus... unless it has displayed other dialogs or popups that take 2345 * input focus, in which case the activity itself will not have focus 2346 * when the other windows have it. Likewise, the system may display 2347 * system-level windows (such as the status bar notification panel or 2348 * a system alert) which will temporarily take window input focus without 2349 * pausing the foreground activity. 2350 * 2351 * @param hasFocus Whether the window of this activity has focus. 2352 * 2353 * @see #hasWindowFocus() 2354 * @see #onResume 2355 * @see View#onWindowFocusChanged(boolean) 2356 */ 2357 public void onWindowFocusChanged(boolean hasFocus) { 2358 } 2359 2360 /** 2361 * Called when the main window associated with the activity has been 2362 * attached to the window manager. 2363 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} 2364 * for more information. 2365 * @see View#onAttachedToWindow 2366 */ 2367 public void onAttachedToWindow() { 2368 } 2369 2370 /** 2371 * Called when the main window associated with the activity has been 2372 * detached from the window manager. 2373 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} 2374 * for more information. 2375 * @see View#onDetachedFromWindow 2376 */ 2377 public void onDetachedFromWindow() { 2378 } 2379 2380 /** 2381 * Returns true if this activity's <em>main</em> window currently has window focus. 2382 * Note that this is not the same as the view itself having focus. 2383 * 2384 * @return True if this activity's main window currently has window focus. 2385 * 2386 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) 2387 */ 2388 public boolean hasWindowFocus() { 2389 Window w = getWindow(); 2390 if (w != null) { 2391 View d = w.getDecorView(); 2392 if (d != null) { 2393 return d.hasWindowFocus(); 2394 } 2395 } 2396 return false; 2397 } 2398 2399 /** 2400 * Called to process key events. You can override this to intercept all 2401 * key events before they are dispatched to the window. Be sure to call 2402 * this implementation for key events that should be handled normally. 2403 * 2404 * @param event The key event. 2405 * 2406 * @return boolean Return true if this event was consumed. 2407 */ 2408 public boolean dispatchKeyEvent(KeyEvent event) { 2409 onUserInteraction(); 2410 Window win = getWindow(); 2411 if (win.superDispatchKeyEvent(event)) { 2412 return true; 2413 } 2414 View decor = mDecor; 2415 if (decor == null) decor = win.getDecorView(); 2416 return event.dispatch(this, decor != null 2417 ? decor.getKeyDispatcherState() : null, this); 2418 } 2419 2420 /** 2421 * Called to process a key shortcut event. 2422 * You can override this to intercept all key shortcut events before they are 2423 * dispatched to the window. Be sure to call this implementation for key shortcut 2424 * events that should be handled normally. 2425 * 2426 * @param event The key shortcut event. 2427 * @return True if this event was consumed. 2428 */ 2429 public boolean dispatchKeyShortcutEvent(KeyEvent event) { 2430 onUserInteraction(); 2431 if (getWindow().superDispatchKeyShortcutEvent(event)) { 2432 return true; 2433 } 2434 return onKeyShortcut(event.getKeyCode(), event); 2435 } 2436 2437 /** 2438 * Called to process touch screen events. You can override this to 2439 * intercept all touch screen events before they are dispatched to the 2440 * window. Be sure to call this implementation for touch screen events 2441 * that should be handled normally. 2442 * 2443 * @param ev The touch screen event. 2444 * 2445 * @return boolean Return true if this event was consumed. 2446 */ 2447 public boolean dispatchTouchEvent(MotionEvent ev) { 2448 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 2449 onUserInteraction(); 2450 } 2451 if (getWindow().superDispatchTouchEvent(ev)) { 2452 return true; 2453 } 2454 return onTouchEvent(ev); 2455 } 2456 2457 /** 2458 * Called to process trackball events. You can override this to 2459 * intercept all trackball events before they are dispatched to the 2460 * window. Be sure to call this implementation for trackball events 2461 * that should be handled normally. 2462 * 2463 * @param ev The trackball event. 2464 * 2465 * @return boolean Return true if this event was consumed. 2466 */ 2467 public boolean dispatchTrackballEvent(MotionEvent ev) { 2468 onUserInteraction(); 2469 if (getWindow().superDispatchTrackballEvent(ev)) { 2470 return true; 2471 } 2472 return onTrackballEvent(ev); 2473 } 2474 2475 /** 2476 * Called to process generic motion events. You can override this to 2477 * intercept all generic motion events before they are dispatched to the 2478 * window. Be sure to call this implementation for generic motion events 2479 * that should be handled normally. 2480 * 2481 * @param ev The generic motion event. 2482 * 2483 * @return boolean Return true if this event was consumed. 2484 */ 2485 public boolean dispatchGenericMotionEvent(MotionEvent ev) { 2486 onUserInteraction(); 2487 if (getWindow().superDispatchGenericMotionEvent(ev)) { 2488 return true; 2489 } 2490 return onGenericMotionEvent(ev); 2491 } 2492 2493 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 2494 event.setClassName(getClass().getName()); 2495 event.setPackageName(getPackageName()); 2496 2497 LayoutParams params = getWindow().getAttributes(); 2498 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && 2499 (params.height == LayoutParams.MATCH_PARENT); 2500 event.setFullScreen(isFullScreen); 2501 2502 CharSequence title = getTitle(); 2503 if (!TextUtils.isEmpty(title)) { 2504 event.getText().add(title); 2505 } 2506 2507 return true; 2508 } 2509 2510 /** 2511 * Default implementation of 2512 * {@link android.view.Window.Callback#onCreatePanelView} 2513 * for activities. This 2514 * simply returns null so that all panel sub-windows will have the default 2515 * menu behavior. 2516 */ 2517 public View onCreatePanelView(int featureId) { 2518 return null; 2519 } 2520 2521 /** 2522 * Default implementation of 2523 * {@link android.view.Window.Callback#onCreatePanelMenu} 2524 * for activities. This calls through to the new 2525 * {@link #onCreateOptionsMenu} method for the 2526 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2527 * so that subclasses of Activity don't need to deal with feature codes. 2528 */ 2529 public boolean onCreatePanelMenu(int featureId, Menu menu) { 2530 if (featureId == Window.FEATURE_OPTIONS_PANEL) { 2531 boolean show = onCreateOptionsMenu(menu); 2532 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); 2533 return show; 2534 } 2535 return false; 2536 } 2537 2538 /** 2539 * Default implementation of 2540 * {@link android.view.Window.Callback#onPreparePanel} 2541 * for activities. This 2542 * calls through to the new {@link #onPrepareOptionsMenu} method for the 2543 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2544 * panel, so that subclasses of 2545 * Activity don't need to deal with feature codes. 2546 */ 2547 public boolean onPreparePanel(int featureId, View view, Menu menu) { 2548 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { 2549 boolean goforit = onPrepareOptionsMenu(menu); 2550 goforit |= mFragments.dispatchPrepareOptionsMenu(menu); 2551 return goforit; 2552 } 2553 return true; 2554 } 2555 2556 /** 2557 * {@inheritDoc} 2558 * 2559 * @return The default implementation returns true. 2560 */ 2561 public boolean onMenuOpened(int featureId, Menu menu) { 2562 if (featureId == Window.FEATURE_ACTION_BAR) { 2563 initActionBar(); 2564 if (mActionBar != null) { 2565 mActionBar.dispatchMenuVisibilityChanged(true); 2566 } else { 2567 Log.e(TAG, "Tried to open action bar menu with no action bar"); 2568 } 2569 } 2570 return true; 2571 } 2572 2573 /** 2574 * Default implementation of 2575 * {@link android.view.Window.Callback#onMenuItemSelected} 2576 * for activities. This calls through to the new 2577 * {@link #onOptionsItemSelected} method for the 2578 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} 2579 * panel, so that subclasses of 2580 * Activity don't need to deal with feature codes. 2581 */ 2582 public boolean onMenuItemSelected(int featureId, MenuItem item) { 2583 CharSequence titleCondensed = item.getTitleCondensed(); 2584 2585 switch (featureId) { 2586 case Window.FEATURE_OPTIONS_PANEL: 2587 // Put event logging here so it gets called even if subclass 2588 // doesn't call through to superclass's implmeentation of each 2589 // of these methods below 2590 if(titleCondensed != null) { 2591 EventLog.writeEvent(50000, 0, titleCondensed.toString()); 2592 } 2593 if (onOptionsItemSelected(item)) { 2594 return true; 2595 } 2596 if (mFragments.dispatchOptionsItemSelected(item)) { 2597 return true; 2598 } 2599 if (item.getItemId() == android.R.id.home && mActionBar != null && 2600 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 2601 if (mParent == null) { 2602 return onNavigateUp(); 2603 } else { 2604 return mParent.onNavigateUpFromChild(this); 2605 } 2606 } 2607 return false; 2608 2609 case Window.FEATURE_CONTEXT_MENU: 2610 if(titleCondensed != null) { 2611 EventLog.writeEvent(50000, 1, titleCondensed.toString()); 2612 } 2613 if (onContextItemSelected(item)) { 2614 return true; 2615 } 2616 return mFragments.dispatchContextItemSelected(item); 2617 2618 default: 2619 return false; 2620 } 2621 } 2622 2623 /** 2624 * Default implementation of 2625 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for 2626 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} 2627 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, 2628 * so that subclasses of Activity don't need to deal with feature codes. 2629 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the 2630 * {@link #onContextMenuClosed(Menu)} will be called. 2631 */ 2632 public void onPanelClosed(int featureId, Menu menu) { 2633 switch (featureId) { 2634 case Window.FEATURE_OPTIONS_PANEL: 2635 mFragments.dispatchOptionsMenuClosed(menu); 2636 onOptionsMenuClosed(menu); 2637 break; 2638 2639 case Window.FEATURE_CONTEXT_MENU: 2640 onContextMenuClosed(menu); 2641 break; 2642 2643 case Window.FEATURE_ACTION_BAR: 2644 initActionBar(); 2645 mActionBar.dispatchMenuVisibilityChanged(false); 2646 break; 2647 } 2648 } 2649 2650 /** 2651 * Declare that the options menu has changed, so should be recreated. 2652 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next 2653 * time it needs to be displayed. 2654 */ 2655 public void invalidateOptionsMenu() { 2656 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); 2657 } 2658 2659 /** 2660 * Initialize the contents of the Activity's standard options menu. You 2661 * should place your menu items in to <var>menu</var>. 2662 * 2663 * <p>This is only called once, the first time the options menu is 2664 * displayed. To update the menu every time it is displayed, see 2665 * {@link #onPrepareOptionsMenu}. 2666 * 2667 * <p>The default implementation populates the menu with standard system 2668 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 2669 * they will be correctly ordered with application-defined menu items. 2670 * Deriving classes should always call through to the base implementation. 2671 * 2672 * <p>You can safely hold on to <var>menu</var> (and any items created 2673 * from it), making modifications to it as desired, until the next 2674 * time onCreateOptionsMenu() is called. 2675 * 2676 * <p>When you add items to the menu, you can implement the Activity's 2677 * {@link #onOptionsItemSelected} method to handle them there. 2678 * 2679 * @param menu The options menu in which you place your items. 2680 * 2681 * @return You must return true for the menu to be displayed; 2682 * if you return false it will not be shown. 2683 * 2684 * @see #onPrepareOptionsMenu 2685 * @see #onOptionsItemSelected 2686 */ 2687 public boolean onCreateOptionsMenu(Menu menu) { 2688 if (mParent != null) { 2689 return mParent.onCreateOptionsMenu(menu); 2690 } 2691 return true; 2692 } 2693 2694 /** 2695 * Prepare the Screen's standard options menu to be displayed. This is 2696 * called right before the menu is shown, every time it is shown. You can 2697 * use this method to efficiently enable/disable items or otherwise 2698 * dynamically modify the contents. 2699 * 2700 * <p>The default implementation updates the system menu items based on the 2701 * activity's state. Deriving classes should always call through to the 2702 * base class implementation. 2703 * 2704 * @param menu The options menu as last shown or first initialized by 2705 * onCreateOptionsMenu(). 2706 * 2707 * @return You must return true for the menu to be displayed; 2708 * if you return false it will not be shown. 2709 * 2710 * @see #onCreateOptionsMenu 2711 */ 2712 public boolean onPrepareOptionsMenu(Menu menu) { 2713 if (mParent != null) { 2714 return mParent.onPrepareOptionsMenu(menu); 2715 } 2716 return true; 2717 } 2718 2719 /** 2720 * This hook is called whenever an item in your options menu is selected. 2721 * The default implementation simply returns false to have the normal 2722 * processing happen (calling the item's Runnable or sending a message to 2723 * its Handler as appropriate). You can use this method for any items 2724 * for which you would like to do processing without those other 2725 * facilities. 2726 * 2727 * <p>Derived classes should call through to the base class for it to 2728 * perform the default menu handling.</p> 2729 * 2730 * @param item The menu item that was selected. 2731 * 2732 * @return boolean Return false to allow normal menu processing to 2733 * proceed, true to consume it here. 2734 * 2735 * @see #onCreateOptionsMenu 2736 */ 2737 public boolean onOptionsItemSelected(MenuItem item) { 2738 if (mParent != null) { 2739 return mParent.onOptionsItemSelected(item); 2740 } 2741 return false; 2742 } 2743 2744 /** 2745 * This method is called whenever the user chooses to navigate Up within your application's 2746 * activity hierarchy from the action bar. 2747 * 2748 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName} 2749 * was specified in the manifest for this activity or an activity-alias to it, 2750 * default Up navigation will be handled automatically. If any activity 2751 * along the parent chain requires extra Intent arguments, the Activity subclass 2752 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} 2753 * to supply those arguments.</p> 2754 * 2755 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 2756 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 2757 * from the design guide for more information about navigating within your app.</p> 2758 * 2759 * <p>See the {@link TaskStackBuilder} class and the Activity methods 2760 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and 2761 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. 2762 * The AppNavigation sample application in the Android SDK is also available for reference.</p> 2763 * 2764 * @return true if Up navigation completed successfully and this Activity was finished, 2765 * false otherwise. 2766 */ 2767 public boolean onNavigateUp() { 2768 // Automatically handle hierarchical Up navigation if the proper 2769 // metadata is available. 2770 Intent upIntent = getParentActivityIntent(); 2771 if (upIntent != null) { 2772 if (mActivityInfo.taskAffinity == null) { 2773 // Activities with a null affinity are special; they really shouldn't 2774 // specify a parent activity intent in the first place. Just finish 2775 // the current activity and call it a day. 2776 finish(); 2777 } else if (shouldUpRecreateTask(upIntent)) { 2778 TaskStackBuilder b = TaskStackBuilder.create(this); 2779 onCreateNavigateUpTaskStack(b); 2780 onPrepareNavigateUpTaskStack(b); 2781 b.startActivities(); 2782 2783 // We can't finishAffinity if we have a result. 2784 // Fall back and simply finish the current activity instead. 2785 if (mResultCode != RESULT_CANCELED || mResultData != null) { 2786 // Tell the developer what's going on to avoid hair-pulling. 2787 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); 2788 finish(); 2789 } else { 2790 finishAffinity(); 2791 } 2792 } else { 2793 navigateUpTo(upIntent); 2794 } 2795 return true; 2796 } 2797 return false; 2798 } 2799 2800 /** 2801 * This is called when a child activity of this one attempts to navigate up. 2802 * The default implementation simply calls onNavigateUp() on this activity (the parent). 2803 * 2804 * @param child The activity making the call. 2805 */ 2806 public boolean onNavigateUpFromChild(Activity child) { 2807 return onNavigateUp(); 2808 } 2809 2810 /** 2811 * Define the synthetic task stack that will be generated during Up navigation from 2812 * a different task. 2813 * 2814 * <p>The default implementation of this method adds the parent chain of this activity 2815 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications 2816 * may choose to override this method to construct the desired task stack in a different 2817 * way.</p> 2818 * 2819 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()} 2820 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent 2821 * returned by {@link #getParentActivityIntent()}.</p> 2822 * 2823 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined 2824 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p> 2825 * 2826 * @param builder An empty TaskStackBuilder - the application should add intents representing 2827 * the desired task stack 2828 */ 2829 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) { 2830 builder.addParentStack(this); 2831 } 2832 2833 /** 2834 * Prepare the synthetic task stack that will be generated during Up navigation 2835 * from a different task. 2836 * 2837 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of 2838 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. 2839 * If any extra data should be added to these intents before launching the new task, 2840 * the application should override this method and add that data here.</p> 2841 * 2842 * @param builder A TaskStackBuilder that has been populated with Intents by 2843 * onCreateNavigateUpTaskStack. 2844 */ 2845 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) { 2846 } 2847 2848 /** 2849 * This hook is called whenever the options menu is being closed (either by the user canceling 2850 * the menu with the back/menu button, or when an item is selected). 2851 * 2852 * @param menu The options menu as last shown or first initialized by 2853 * onCreateOptionsMenu(). 2854 */ 2855 public void onOptionsMenuClosed(Menu menu) { 2856 if (mParent != null) { 2857 mParent.onOptionsMenuClosed(menu); 2858 } 2859 } 2860 2861 /** 2862 * Programmatically opens the options menu. If the options menu is already 2863 * open, this method does nothing. 2864 */ 2865 public void openOptionsMenu() { 2866 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); 2867 } 2868 2869 /** 2870 * Progammatically closes the options menu. If the options menu is already 2871 * closed, this method does nothing. 2872 */ 2873 public void closeOptionsMenu() { 2874 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); 2875 } 2876 2877 /** 2878 * Called when a context menu for the {@code view} is about to be shown. 2879 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every 2880 * time the context menu is about to be shown and should be populated for 2881 * the view (or item inside the view for {@link AdapterView} subclasses, 2882 * this can be found in the {@code menuInfo})). 2883 * <p> 2884 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an 2885 * item has been selected. 2886 * <p> 2887 * It is not safe to hold onto the context menu after this method returns. 2888 * 2889 */ 2890 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 2891 } 2892 2893 /** 2894 * Registers a context menu to be shown for the given view (multiple views 2895 * can show the context menu). This method will set the 2896 * {@link OnCreateContextMenuListener} on the view to this activity, so 2897 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be 2898 * called when it is time to show the context menu. 2899 * 2900 * @see #unregisterForContextMenu(View) 2901 * @param view The view that should show a context menu. 2902 */ 2903 public void registerForContextMenu(View view) { 2904 view.setOnCreateContextMenuListener(this); 2905 } 2906 2907 /** 2908 * Prevents a context menu to be shown for the given view. This method will remove the 2909 * {@link OnCreateContextMenuListener} on the view. 2910 * 2911 * @see #registerForContextMenu(View) 2912 * @param view The view that should stop showing a context menu. 2913 */ 2914 public void unregisterForContextMenu(View view) { 2915 view.setOnCreateContextMenuListener(null); 2916 } 2917 2918 /** 2919 * Programmatically opens the context menu for a particular {@code view}. 2920 * The {@code view} should have been added via 2921 * {@link #registerForContextMenu(View)}. 2922 * 2923 * @param view The view to show the context menu for. 2924 */ 2925 public void openContextMenu(View view) { 2926 view.showContextMenu(); 2927 } 2928 2929 /** 2930 * Programmatically closes the most recently opened context menu, if showing. 2931 */ 2932 public void closeContextMenu() { 2933 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); 2934 } 2935 2936 /** 2937 * This hook is called whenever an item in a context menu is selected. The 2938 * default implementation simply returns false to have the normal processing 2939 * happen (calling the item's Runnable or sending a message to its Handler 2940 * as appropriate). You can use this method for any items for which you 2941 * would like to do processing without those other facilities. 2942 * <p> 2943 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the 2944 * View that added this menu item. 2945 * <p> 2946 * Derived classes should call through to the base class for it to perform 2947 * the default menu handling. 2948 * 2949 * @param item The context menu item that was selected. 2950 * @return boolean Return false to allow normal context menu processing to 2951 * proceed, true to consume it here. 2952 */ 2953 public boolean onContextItemSelected(MenuItem item) { 2954 if (mParent != null) { 2955 return mParent.onContextItemSelected(item); 2956 } 2957 return false; 2958 } 2959 2960 /** 2961 * This hook is called whenever the context menu is being closed (either by 2962 * the user canceling the menu with the back/menu button, or when an item is 2963 * selected). 2964 * 2965 * @param menu The context menu that is being closed. 2966 */ 2967 public void onContextMenuClosed(Menu menu) { 2968 if (mParent != null) { 2969 mParent.onContextMenuClosed(menu); 2970 } 2971 } 2972 2973 /** 2974 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. 2975 */ 2976 @Deprecated 2977 protected Dialog onCreateDialog(int id) { 2978 return null; 2979 } 2980 2981 /** 2982 * Callback for creating dialogs that are managed (saved and restored) for you 2983 * by the activity. The default implementation calls through to 2984 * {@link #onCreateDialog(int)} for compatibility. 2985 * 2986 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 2987 * or later, consider instead using a {@link DialogFragment} instead.</em> 2988 * 2989 * <p>If you use {@link #showDialog(int)}, the activity will call through to 2990 * this method the first time, and hang onto it thereafter. Any dialog 2991 * that is created by this method will automatically be saved and restored 2992 * for you, including whether it is showing. 2993 * 2994 * <p>If you would like the activity to manage saving and restoring dialogs 2995 * for you, you should override this method and handle any ids that are 2996 * passed to {@link #showDialog}. 2997 * 2998 * <p>If you would like an opportunity to prepare your dialog before it is shown, 2999 * override {@link #onPrepareDialog(int, Dialog, Bundle)}. 3000 * 3001 * @param id The id of the dialog. 3002 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3003 * @return The dialog. If you return null, the dialog will not be created. 3004 * 3005 * @see #onPrepareDialog(int, Dialog, Bundle) 3006 * @see #showDialog(int, Bundle) 3007 * @see #dismissDialog(int) 3008 * @see #removeDialog(int) 3009 * 3010 * @deprecated Use the new {@link DialogFragment} class with 3011 * {@link FragmentManager} instead; this is also 3012 * available on older platforms through the Android compatibility package. 3013 */ 3014 @Deprecated 3015 protected Dialog onCreateDialog(int id, Bundle args) { 3016 return onCreateDialog(id); 3017 } 3018 3019 /** 3020 * @deprecated Old no-arguments version of 3021 * {@link #onPrepareDialog(int, Dialog, Bundle)}. 3022 */ 3023 @Deprecated 3024 protected void onPrepareDialog(int id, Dialog dialog) { 3025 dialog.setOwnerActivity(this); 3026 } 3027 3028 /** 3029 * Provides an opportunity to prepare a managed dialog before it is being 3030 * shown. The default implementation calls through to 3031 * {@link #onPrepareDialog(int, Dialog)} for compatibility. 3032 * 3033 * <p> 3034 * Override this if you need to update a managed dialog based on the state 3035 * of the application each time it is shown. For example, a time picker 3036 * dialog might want to be updated with the current time. You should call 3037 * through to the superclass's implementation. The default implementation 3038 * will set this Activity as the owner activity on the Dialog. 3039 * 3040 * @param id The id of the managed dialog. 3041 * @param dialog The dialog. 3042 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. 3043 * @see #onCreateDialog(int, Bundle) 3044 * @see #showDialog(int) 3045 * @see #dismissDialog(int) 3046 * @see #removeDialog(int) 3047 * 3048 * @deprecated Use the new {@link DialogFragment} class with 3049 * {@link FragmentManager} instead; this is also 3050 * available on older platforms through the Android compatibility package. 3051 */ 3052 @Deprecated 3053 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { 3054 onPrepareDialog(id, dialog); 3055 } 3056 3057 /** 3058 * Simple version of {@link #showDialog(int, Bundle)} that does not 3059 * take any arguments. Simply calls {@link #showDialog(int, Bundle)} 3060 * with null arguments. 3061 * 3062 * @deprecated Use the new {@link DialogFragment} class with 3063 * {@link FragmentManager} instead; this is also 3064 * available on older platforms through the Android compatibility package. 3065 */ 3066 @Deprecated 3067 public final void showDialog(int id) { 3068 showDialog(id, null); 3069 } 3070 3071 /** 3072 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} 3073 * will be made with the same id the first time this is called for a given 3074 * id. From thereafter, the dialog will be automatically saved and restored. 3075 * 3076 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} 3077 * or later, consider instead using a {@link DialogFragment} instead.</em> 3078 * 3079 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will 3080 * be made to provide an opportunity to do any timely preparation. 3081 * 3082 * @param id The id of the managed dialog. 3083 * @param args Arguments to pass through to the dialog. These will be saved 3084 * and restored for you. Note that if the dialog is already created, 3085 * {@link #onCreateDialog(int, Bundle)} will not be called with the new 3086 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. 3087 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. 3088 * @return Returns true if the Dialog was created; false is returned if 3089 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. 3090 * 3091 * @see Dialog 3092 * @see #onCreateDialog(int, Bundle) 3093 * @see #onPrepareDialog(int, Dialog, Bundle) 3094 * @see #dismissDialog(int) 3095 * @see #removeDialog(int) 3096 * 3097 * @deprecated Use the new {@link DialogFragment} class with 3098 * {@link FragmentManager} instead; this is also 3099 * available on older platforms through the Android compatibility package. 3100 */ 3101 @Deprecated 3102 public final boolean showDialog(int id, Bundle args) { 3103 if (mManagedDialogs == null) { 3104 mManagedDialogs = new SparseArray<ManagedDialog>(); 3105 } 3106 ManagedDialog md = mManagedDialogs.get(id); 3107 if (md == null) { 3108 md = new ManagedDialog(); 3109 md.mDialog = createDialog(id, null, args); 3110 if (md.mDialog == null) { 3111 return false; 3112 } 3113 mManagedDialogs.put(id, md); 3114 } 3115 3116 md.mArgs = args; 3117 onPrepareDialog(id, md.mDialog, args); 3118 md.mDialog.show(); 3119 return true; 3120 } 3121 3122 /** 3123 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. 3124 * 3125 * @param id The id of the managed dialog. 3126 * 3127 * @throws IllegalArgumentException if the id was not previously shown via 3128 * {@link #showDialog(int)}. 3129 * 3130 * @see #onCreateDialog(int, Bundle) 3131 * @see #onPrepareDialog(int, Dialog, Bundle) 3132 * @see #showDialog(int) 3133 * @see #removeDialog(int) 3134 * 3135 * @deprecated Use the new {@link DialogFragment} class with 3136 * {@link FragmentManager} instead; this is also 3137 * available on older platforms through the Android compatibility package. 3138 */ 3139 @Deprecated 3140 public final void dismissDialog(int id) { 3141 if (mManagedDialogs == null) { 3142 throw missingDialog(id); 3143 } 3144 3145 final ManagedDialog md = mManagedDialogs.get(id); 3146 if (md == null) { 3147 throw missingDialog(id); 3148 } 3149 md.mDialog.dismiss(); 3150 } 3151 3152 /** 3153 * Creates an exception to throw if a user passed in a dialog id that is 3154 * unexpected. 3155 */ 3156 private IllegalArgumentException missingDialog(int id) { 3157 return new IllegalArgumentException("no dialog with id " + id + " was ever " 3158 + "shown via Activity#showDialog"); 3159 } 3160 3161 /** 3162 * Removes any internal references to a dialog managed by this Activity. 3163 * If the dialog is showing, it will dismiss it as part of the clean up. 3164 * 3165 * <p>This can be useful if you know that you will never show a dialog again and 3166 * want to avoid the overhead of saving and restoring it in the future. 3167 * 3168 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function 3169 * will not throw an exception if you try to remove an ID that does not 3170 * currently have an associated dialog.</p> 3171 * 3172 * @param id The id of the managed dialog. 3173 * 3174 * @see #onCreateDialog(int, Bundle) 3175 * @see #onPrepareDialog(int, Dialog, Bundle) 3176 * @see #showDialog(int) 3177 * @see #dismissDialog(int) 3178 * 3179 * @deprecated Use the new {@link DialogFragment} class with 3180 * {@link FragmentManager} instead; this is also 3181 * available on older platforms through the Android compatibility package. 3182 */ 3183 @Deprecated 3184 public final void removeDialog(int id) { 3185 if (mManagedDialogs != null) { 3186 final ManagedDialog md = mManagedDialogs.get(id); 3187 if (md != null) { 3188 md.mDialog.dismiss(); 3189 mManagedDialogs.remove(id); 3190 } 3191 } 3192 } 3193 3194 /** 3195 * This hook is called when the user signals the desire to start a search. 3196 * 3197 * <p>You can use this function as a simple way to launch the search UI, in response to a 3198 * menu item, search button, or other widgets within your activity. Unless overidden, 3199 * calling this function is the same as calling 3200 * {@link #startSearch startSearch(null, false, null, false)}, which launches 3201 * search for the current activity as specified in its manifest, see {@link SearchManager}. 3202 * 3203 * <p>You can override this function to force global search, e.g. in response to a dedicated 3204 * search key, or to block search entirely (by simply returning false). 3205 * 3206 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. 3207 * The default implementation always returns {@code true}. 3208 * 3209 * @see android.app.SearchManager 3210 */ 3211 public boolean onSearchRequested() { 3212 startSearch(null, false, null, false); 3213 return true; 3214 } 3215 3216 /** 3217 * This hook is called to launch the search UI. 3218 * 3219 * <p>It is typically called from onSearchRequested(), either directly from 3220 * Activity.onSearchRequested() or from an overridden version in any given 3221 * Activity. If your goal is simply to activate search, it is preferred to call 3222 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal 3223 * is to inject specific data such as context data, it is preferred to <i>override</i> 3224 * onSearchRequested(), so that any callers to it will benefit from the override. 3225 * 3226 * @param initialQuery Any non-null non-empty string will be inserted as 3227 * pre-entered text in the search query box. 3228 * @param selectInitialQuery If true, the intial query will be preselected, which means that 3229 * any further typing will replace it. This is useful for cases where an entire pre-formed 3230 * query is being inserted. If false, the selection point will be placed at the end of the 3231 * inserted query. This is useful when the inserted query is text that the user entered, 3232 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful 3233 * if initialQuery is a non-empty string.</i> 3234 * @param appSearchData An application can insert application-specific 3235 * context here, in order to improve quality or specificity of its own 3236 * searches. This data will be returned with SEARCH intent(s). Null if 3237 * no extra data is required. 3238 * @param globalSearch If false, this will only launch the search that has been specifically 3239 * defined by the application (which is usually defined as a local search). If no default 3240 * search is defined in the current application or activity, global search will be launched. 3241 * If true, this will always launch a platform-global (e.g. web-based) search instead. 3242 * 3243 * @see android.app.SearchManager 3244 * @see #onSearchRequested 3245 */ 3246 public void startSearch(String initialQuery, boolean selectInitialQuery, 3247 Bundle appSearchData, boolean globalSearch) { 3248 ensureSearchManager(); 3249 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), 3250 appSearchData, globalSearch); 3251 } 3252 3253 /** 3254 * Similar to {@link #startSearch}, but actually fires off the search query after invoking 3255 * the search dialog. Made available for testing purposes. 3256 * 3257 * @param query The query to trigger. If empty, the request will be ignored. 3258 * @param appSearchData An application can insert application-specific 3259 * context here, in order to improve quality or specificity of its own 3260 * searches. This data will be returned with SEARCH intent(s). Null if 3261 * no extra data is required. 3262 */ 3263 public void triggerSearch(String query, Bundle appSearchData) { 3264 ensureSearchManager(); 3265 mSearchManager.triggerSearch(query, getComponentName(), appSearchData); 3266 } 3267 3268 /** 3269 * Request that key events come to this activity. Use this if your 3270 * activity has no views with focus, but the activity still wants 3271 * a chance to process key events. 3272 * 3273 * @see android.view.Window#takeKeyEvents 3274 */ 3275 public void takeKeyEvents(boolean get) { 3276 getWindow().takeKeyEvents(get); 3277 } 3278 3279 /** 3280 * Enable extended window features. This is a convenience for calling 3281 * {@link android.view.Window#requestFeature getWindow().requestFeature()}. 3282 * 3283 * @param featureId The desired feature as defined in 3284 * {@link android.view.Window}. 3285 * @return Returns true if the requested feature is supported and now 3286 * enabled. 3287 * 3288 * @see android.view.Window#requestFeature 3289 */ 3290 public final boolean requestWindowFeature(int featureId) { 3291 return getWindow().requestFeature(featureId); 3292 } 3293 3294 /** 3295 * Convenience for calling 3296 * {@link android.view.Window#setFeatureDrawableResource}. 3297 */ 3298 public final void setFeatureDrawableResource(int featureId, int resId) { 3299 getWindow().setFeatureDrawableResource(featureId, resId); 3300 } 3301 3302 /** 3303 * Convenience for calling 3304 * {@link android.view.Window#setFeatureDrawableUri}. 3305 */ 3306 public final void setFeatureDrawableUri(int featureId, Uri uri) { 3307 getWindow().setFeatureDrawableUri(featureId, uri); 3308 } 3309 3310 /** 3311 * Convenience for calling 3312 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. 3313 */ 3314 public final void setFeatureDrawable(int featureId, Drawable drawable) { 3315 getWindow().setFeatureDrawable(featureId, drawable); 3316 } 3317 3318 /** 3319 * Convenience for calling 3320 * {@link android.view.Window#setFeatureDrawableAlpha}. 3321 */ 3322 public final void setFeatureDrawableAlpha(int featureId, int alpha) { 3323 getWindow().setFeatureDrawableAlpha(featureId, alpha); 3324 } 3325 3326 /** 3327 * Convenience for calling 3328 * {@link android.view.Window#getLayoutInflater}. 3329 */ 3330 public LayoutInflater getLayoutInflater() { 3331 return getWindow().getLayoutInflater(); 3332 } 3333 3334 /** 3335 * Returns a {@link MenuInflater} with this context. 3336 */ 3337 public MenuInflater getMenuInflater() { 3338 // Make sure that action views can get an appropriate theme. 3339 if (mMenuInflater == null) { 3340 initActionBar(); 3341 if (mActionBar != null) { 3342 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); 3343 } else { 3344 mMenuInflater = new MenuInflater(this); 3345 } 3346 } 3347 return mMenuInflater; 3348 } 3349 3350 @Override 3351 protected void onApplyThemeResource(Resources.Theme theme, int resid, 3352 boolean first) { 3353 if (mParent == null) { 3354 super.onApplyThemeResource(theme, resid, first); 3355 } else { 3356 try { 3357 theme.setTo(mParent.getTheme()); 3358 } catch (Exception e) { 3359 // Empty 3360 } 3361 theme.applyStyle(resid, false); 3362 } 3363 } 3364 3365 /** 3366 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)} 3367 * with no options. 3368 * 3369 * @param intent The intent to start. 3370 * @param requestCode If >= 0, this code will be returned in 3371 * onActivityResult() when the activity exits. 3372 * 3373 * @throws android.content.ActivityNotFoundException 3374 * 3375 * @see #startActivity 3376 */ 3377 public void startActivityForResult(Intent intent, int requestCode) { 3378 startActivityForResult(intent, requestCode, null); 3379 } 3380 3381 /** 3382 * Launch an activity for which you would like a result when it finished. 3383 * When this activity exits, your 3384 * onActivityResult() method will be called with the given requestCode. 3385 * Using a negative requestCode is the same as calling 3386 * {@link #startActivity} (the activity is not launched as a sub-activity). 3387 * 3388 * <p>Note that this method should only be used with Intent protocols 3389 * that are defined to return a result. In other protocols (such as 3390 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may 3391 * not get the result when you expect. For example, if the activity you 3392 * are launching uses the singleTask launch mode, it will not run in your 3393 * task and thus you will immediately receive a cancel result. 3394 * 3395 * <p>As a special case, if you call startActivityForResult() with a requestCode 3396 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your 3397 * activity, then your window will not be displayed until a result is 3398 * returned back from the started activity. This is to avoid visible 3399 * flickering when redirecting to another activity. 3400 * 3401 * <p>This method throws {@link android.content.ActivityNotFoundException} 3402 * if there was no Activity found to run the given Intent. 3403 * 3404 * @param intent The intent to start. 3405 * @param requestCode If >= 0, this code will be returned in 3406 * onActivityResult() when the activity exits. 3407 * @param options Additional options for how the Activity should be started. 3408 * See {@link android.content.Context#startActivity(Intent, Bundle) 3409 * Context.startActivity(Intent, Bundle)} for more details. 3410 * 3411 * @throws android.content.ActivityNotFoundException 3412 * 3413 * @see #startActivity 3414 */ 3415 public void startActivityForResult(Intent intent, int requestCode, Bundle options) { 3416 if (mParent == null) { 3417 Instrumentation.ActivityResult ar = 3418 mInstrumentation.execStartActivity( 3419 this, mMainThread.getApplicationThread(), mToken, this, 3420 intent, requestCode, options); 3421 if (ar != null) { 3422 mMainThread.sendActivityResult( 3423 mToken, mEmbeddedID, requestCode, ar.getResultCode(), 3424 ar.getResultData()); 3425 } 3426 if (requestCode >= 0) { 3427 // If this start is requesting a result, we can avoid making 3428 // the activity visible until the result is received. Setting 3429 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3430 // activity hidden during this time, to avoid flickering. 3431 // This can only be done when a result is requested because 3432 // that guarantees we will get information back when the 3433 // activity is finished, no matter what happens to it. 3434 mStartedActivity = true; 3435 } 3436 } else { 3437 if (options != null) { 3438 mParent.startActivityFromChild(this, intent, requestCode, options); 3439 } else { 3440 // Note we want to go through this method for compatibility with 3441 // existing applications that may have overridden it. 3442 mParent.startActivityFromChild(this, intent, requestCode); 3443 } 3444 } 3445 } 3446 3447 /** 3448 * @hide Implement to provide correct calling token. 3449 */ 3450 public void startActivityAsUser(Intent intent, UserHandle user) { 3451 startActivityAsUser(intent, null, user); 3452 } 3453 3454 /** 3455 * @hide Implement to provide correct calling token. 3456 */ 3457 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 3458 if (mParent != null) { 3459 throw new RuntimeException("Called be called from a child"); 3460 } 3461 Instrumentation.ActivityResult ar = 3462 mInstrumentation.execStartActivity( 3463 this, mMainThread.getApplicationThread(), mToken, this, 3464 intent, -1, options, user); 3465 if (ar != null) { 3466 mMainThread.sendActivityResult( 3467 mToken, mEmbeddedID, -1, ar.getResultCode(), 3468 ar.getResultData()); 3469 } 3470 } 3471 3472 /** 3473 * Same as calling {@link #startIntentSenderForResult(IntentSender, int, 3474 * Intent, int, int, int, Bundle)} with no options. 3475 * 3476 * @param intent The IntentSender to launch. 3477 * @param requestCode If >= 0, this code will be returned in 3478 * onActivityResult() when the activity exits. 3479 * @param fillInIntent If non-null, this will be provided as the 3480 * intent parameter to {@link IntentSender#sendIntent}. 3481 * @param flagsMask Intent flags in the original IntentSender that you 3482 * would like to change. 3483 * @param flagsValues Desired values for any bits set in 3484 * <var>flagsMask</var> 3485 * @param extraFlags Always set to 0. 3486 */ 3487 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3488 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3489 throws IntentSender.SendIntentException { 3490 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, 3491 flagsValues, extraFlags, null); 3492 } 3493 3494 /** 3495 * Like {@link #startActivityForResult(Intent, int)}, but allowing you 3496 * to use a IntentSender to describe the activity to be started. If 3497 * the IntentSender is for an activity, that activity will be started 3498 * as if you had called the regular {@link #startActivityForResult(Intent, int)} 3499 * here; otherwise, its associated action will be executed (such as 3500 * sending a broadcast) as if you had called 3501 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. 3502 * 3503 * @param intent The IntentSender to launch. 3504 * @param requestCode If >= 0, this code will be returned in 3505 * onActivityResult() when the activity exits. 3506 * @param fillInIntent If non-null, this will be provided as the 3507 * intent parameter to {@link IntentSender#sendIntent}. 3508 * @param flagsMask Intent flags in the original IntentSender that you 3509 * would like to change. 3510 * @param flagsValues Desired values for any bits set in 3511 * <var>flagsMask</var> 3512 * @param extraFlags Always set to 0. 3513 * @param options Additional options for how the Activity should be started. 3514 * See {@link android.content.Context#startActivity(Intent, Bundle) 3515 * Context.startActivity(Intent, Bundle)} for more details. If options 3516 * have also been supplied by the IntentSender, options given here will 3517 * override any that conflict with those given by the IntentSender. 3518 */ 3519 public void startIntentSenderForResult(IntentSender intent, int requestCode, 3520 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3521 Bundle options) throws IntentSender.SendIntentException { 3522 if (mParent == null) { 3523 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3524 flagsMask, flagsValues, this, options); 3525 } else if (options != null) { 3526 mParent.startIntentSenderFromChild(this, intent, requestCode, 3527 fillInIntent, flagsMask, flagsValues, extraFlags, options); 3528 } else { 3529 // Note we want to go through this call for compatibility with 3530 // existing applications that may have overridden the method. 3531 mParent.startIntentSenderFromChild(this, intent, requestCode, 3532 fillInIntent, flagsMask, flagsValues, extraFlags); 3533 } 3534 } 3535 3536 private void startIntentSenderForResultInner(IntentSender intent, int requestCode, 3537 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity, 3538 Bundle options) 3539 throws IntentSender.SendIntentException { 3540 try { 3541 String resolvedType = null; 3542 if (fillInIntent != null) { 3543 fillInIntent.migrateExtraStreamToClipData(); 3544 fillInIntent.prepareToLeaveProcess(); 3545 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); 3546 } 3547 int result = ActivityManagerNative.getDefault() 3548 .startActivityIntentSender(mMainThread.getApplicationThread(), intent, 3549 fillInIntent, resolvedType, mToken, activity.mEmbeddedID, 3550 requestCode, flagsMask, flagsValues, options); 3551 if (result == ActivityManager.START_CANCELED) { 3552 throw new IntentSender.SendIntentException(); 3553 } 3554 Instrumentation.checkStartActivityResult(result, null); 3555 } catch (RemoteException e) { 3556 } 3557 if (requestCode >= 0) { 3558 // If this start is requesting a result, we can avoid making 3559 // the activity visible until the result is received. Setting 3560 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3561 // activity hidden during this time, to avoid flickering. 3562 // This can only be done when a result is requested because 3563 // that guarantees we will get information back when the 3564 // activity is finished, no matter what happens to it. 3565 mStartedActivity = true; 3566 } 3567 } 3568 3569 /** 3570 * Same as {@link #startActivity(Intent, Bundle)} with no options 3571 * specified. 3572 * 3573 * @param intent The intent to start. 3574 * 3575 * @throws android.content.ActivityNotFoundException 3576 * 3577 * @see {@link #startActivity(Intent, Bundle)} 3578 * @see #startActivityForResult 3579 */ 3580 @Override 3581 public void startActivity(Intent intent) { 3582 startActivity(intent, null); 3583 } 3584 3585 /** 3586 * Launch a new activity. You will not receive any information about when 3587 * the activity exits. This implementation overrides the base version, 3588 * providing information about 3589 * the activity performing the launch. Because of this additional 3590 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3591 * required; if not specified, the new activity will be added to the 3592 * task of the caller. 3593 * 3594 * <p>This method throws {@link android.content.ActivityNotFoundException} 3595 * if there was no Activity found to run the given Intent. 3596 * 3597 * @param intent The intent to start. 3598 * @param options Additional options for how the Activity should be started. 3599 * See {@link android.content.Context#startActivity(Intent, Bundle) 3600 * Context.startActivity(Intent, Bundle)} for more details. 3601 * 3602 * @throws android.content.ActivityNotFoundException 3603 * 3604 * @see {@link #startActivity(Intent)} 3605 * @see #startActivityForResult 3606 */ 3607 @Override 3608 public void startActivity(Intent intent, Bundle options) { 3609 if (options != null) { 3610 startActivityForResult(intent, -1, options); 3611 } else { 3612 // Note we want to go through this call for compatibility with 3613 // applications that may have overridden the method. 3614 startActivityForResult(intent, -1); 3615 } 3616 } 3617 3618 /** 3619 * Same as {@link #startActivities(Intent[], Bundle)} with no options 3620 * specified. 3621 * 3622 * @param intents The intents to start. 3623 * 3624 * @throws android.content.ActivityNotFoundException 3625 * 3626 * @see {@link #startActivities(Intent[], Bundle)} 3627 * @see #startActivityForResult 3628 */ 3629 @Override 3630 public void startActivities(Intent[] intents) { 3631 startActivities(intents, null); 3632 } 3633 3634 /** 3635 * Launch a new activity. You will not receive any information about when 3636 * the activity exits. This implementation overrides the base version, 3637 * providing information about 3638 * the activity performing the launch. Because of this additional 3639 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not 3640 * required; if not specified, the new activity will be added to the 3641 * task of the caller. 3642 * 3643 * <p>This method throws {@link android.content.ActivityNotFoundException} 3644 * if there was no Activity found to run the given Intent. 3645 * 3646 * @param intents The intents to start. 3647 * @param options Additional options for how the Activity should be started. 3648 * See {@link android.content.Context#startActivity(Intent, Bundle) 3649 * Context.startActivity(Intent, Bundle)} for more details. 3650 * 3651 * @throws android.content.ActivityNotFoundException 3652 * 3653 * @see {@link #startActivities(Intent[])} 3654 * @see #startActivityForResult 3655 */ 3656 @Override 3657 public void startActivities(Intent[] intents, Bundle options) { 3658 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), 3659 mToken, this, intents, options); 3660 } 3661 3662 /** 3663 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} 3664 * with no options. 3665 * 3666 * @param intent The IntentSender to launch. 3667 * @param fillInIntent If non-null, this will be provided as the 3668 * intent parameter to {@link IntentSender#sendIntent}. 3669 * @param flagsMask Intent flags in the original IntentSender that you 3670 * would like to change. 3671 * @param flagsValues Desired values for any bits set in 3672 * <var>flagsMask</var> 3673 * @param extraFlags Always set to 0. 3674 */ 3675 public void startIntentSender(IntentSender intent, 3676 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 3677 throws IntentSender.SendIntentException { 3678 startIntentSender(intent, fillInIntent, flagsMask, flagsValues, 3679 extraFlags, null); 3680 } 3681 3682 /** 3683 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender 3684 * to start; see 3685 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} 3686 * for more information. 3687 * 3688 * @param intent The IntentSender to launch. 3689 * @param fillInIntent If non-null, this will be provided as the 3690 * intent parameter to {@link IntentSender#sendIntent}. 3691 * @param flagsMask Intent flags in the original IntentSender that you 3692 * would like to change. 3693 * @param flagsValues Desired values for any bits set in 3694 * <var>flagsMask</var> 3695 * @param extraFlags Always set to 0. 3696 * @param options Additional options for how the Activity should be started. 3697 * See {@link android.content.Context#startActivity(Intent, Bundle) 3698 * Context.startActivity(Intent, Bundle)} for more details. If options 3699 * have also been supplied by the IntentSender, options given here will 3700 * override any that conflict with those given by the IntentSender. 3701 */ 3702 public void startIntentSender(IntentSender intent, 3703 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 3704 Bundle options) throws IntentSender.SendIntentException { 3705 if (options != null) { 3706 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3707 flagsValues, extraFlags, options); 3708 } else { 3709 // Note we want to go through this call for compatibility with 3710 // applications that may have overridden the method. 3711 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, 3712 flagsValues, extraFlags); 3713 } 3714 } 3715 3716 /** 3717 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} 3718 * with no options. 3719 * 3720 * @param intent The intent to start. 3721 * @param requestCode If >= 0, this code will be returned in 3722 * onActivityResult() when the activity exits, as described in 3723 * {@link #startActivityForResult}. 3724 * 3725 * @return If a new activity was launched then true is returned; otherwise 3726 * false is returned and you must handle the Intent yourself. 3727 * 3728 * @see #startActivity 3729 * @see #startActivityForResult 3730 */ 3731 public boolean startActivityIfNeeded(Intent intent, int requestCode) { 3732 return startActivityIfNeeded(intent, requestCode, null); 3733 } 3734 3735 /** 3736 * A special variation to launch an activity only if a new activity 3737 * instance is needed to handle the given Intent. In other words, this is 3738 * just like {@link #startActivityForResult(Intent, int)} except: if you are 3739 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or 3740 * singleTask or singleTop 3741 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, 3742 * and the activity 3743 * that handles <var>intent</var> is the same as your currently running 3744 * activity, then a new instance is not needed. In this case, instead of 3745 * the normal behavior of calling {@link #onNewIntent} this function will 3746 * return and you can handle the Intent yourself. 3747 * 3748 * <p>This function can only be called from a top-level activity; if it is 3749 * called from a child activity, a runtime exception will be thrown. 3750 * 3751 * @param intent The intent to start. 3752 * @param requestCode If >= 0, this code will be returned in 3753 * onActivityResult() when the activity exits, as described in 3754 * {@link #startActivityForResult}. 3755 * @param options Additional options for how the Activity should be started. 3756 * See {@link android.content.Context#startActivity(Intent, Bundle) 3757 * Context.startActivity(Intent, Bundle)} for more details. 3758 * 3759 * @return If a new activity was launched then true is returned; otherwise 3760 * false is returned and you must handle the Intent yourself. 3761 * 3762 * @see #startActivity 3763 * @see #startActivityForResult 3764 */ 3765 public boolean startActivityIfNeeded(Intent intent, int requestCode, Bundle options) { 3766 if (mParent == null) { 3767 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; 3768 try { 3769 intent.migrateExtraStreamToClipData(); 3770 intent.prepareToLeaveProcess(); 3771 result = ActivityManagerNative.getDefault() 3772 .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), 3773 intent, intent.resolveTypeIfNeeded(getContentResolver()), 3774 mToken, mEmbeddedID, requestCode, 3775 ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, null, 3776 options); 3777 } catch (RemoteException e) { 3778 // Empty 3779 } 3780 3781 Instrumentation.checkStartActivityResult(result, intent); 3782 3783 if (requestCode >= 0) { 3784 // If this start is requesting a result, we can avoid making 3785 // the activity visible until the result is received. Setting 3786 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the 3787 // activity hidden during this time, to avoid flickering. 3788 // This can only be done when a result is requested because 3789 // that guarantees we will get information back when the 3790 // activity is finished, no matter what happens to it. 3791 mStartedActivity = true; 3792 } 3793 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; 3794 } 3795 3796 throw new UnsupportedOperationException( 3797 "startActivityIfNeeded can only be called from a top-level activity"); 3798 } 3799 3800 /** 3801 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with 3802 * no options. 3803 * 3804 * @param intent The intent to dispatch to the next activity. For 3805 * correct behavior, this must be the same as the Intent that started 3806 * your own activity; the only changes you can make are to the extras 3807 * inside of it. 3808 * 3809 * @return Returns a boolean indicating whether there was another Activity 3810 * to start: true if there was a next activity to start, false if there 3811 * wasn't. In general, if true is returned you will then want to call 3812 * finish() on yourself. 3813 */ 3814 public boolean startNextMatchingActivity(Intent intent) { 3815 return startNextMatchingActivity(intent, null); 3816 } 3817 3818 /** 3819 * Special version of starting an activity, for use when you are replacing 3820 * other activity components. You can use this to hand the Intent off 3821 * to the next Activity that can handle it. You typically call this in 3822 * {@link #onCreate} with the Intent returned by {@link #getIntent}. 3823 * 3824 * @param intent The intent to dispatch to the next activity. For 3825 * correct behavior, this must be the same as the Intent that started 3826 * your own activity; the only changes you can make are to the extras 3827 * inside of it. 3828 * @param options Additional options for how the Activity should be started. 3829 * See {@link android.content.Context#startActivity(Intent, Bundle) 3830 * Context.startActivity(Intent, Bundle)} for more details. 3831 * 3832 * @return Returns a boolean indicating whether there was another Activity 3833 * to start: true if there was a next activity to start, false if there 3834 * wasn't. In general, if true is returned you will then want to call 3835 * finish() on yourself. 3836 */ 3837 public boolean startNextMatchingActivity(Intent intent, Bundle options) { 3838 if (mParent == null) { 3839 try { 3840 intent.migrateExtraStreamToClipData(); 3841 intent.prepareToLeaveProcess(); 3842 return ActivityManagerNative.getDefault() 3843 .startNextMatchingActivity(mToken, intent, options); 3844 } catch (RemoteException e) { 3845 // Empty 3846 } 3847 return false; 3848 } 3849 3850 throw new UnsupportedOperationException( 3851 "startNextMatchingActivity can only be called from a top-level activity"); 3852 } 3853 3854 /** 3855 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} 3856 * with no options. 3857 * 3858 * @param child The activity making the call. 3859 * @param intent The intent to start. 3860 * @param requestCode Reply request code. < 0 if reply is not requested. 3861 * 3862 * @throws android.content.ActivityNotFoundException 3863 * 3864 * @see #startActivity 3865 * @see #startActivityForResult 3866 */ 3867 public void startActivityFromChild(Activity child, Intent intent, 3868 int requestCode) { 3869 startActivityFromChild(child, intent, requestCode, null); 3870 } 3871 3872 /** 3873 * This is called when a child activity of this one calls its 3874 * {@link #startActivity} or {@link #startActivityForResult} method. 3875 * 3876 * <p>This method throws {@link android.content.ActivityNotFoundException} 3877 * if there was no Activity found to run the given Intent. 3878 * 3879 * @param child The activity making the call. 3880 * @param intent The intent to start. 3881 * @param requestCode Reply request code. < 0 if reply is not requested. 3882 * @param options Additional options for how the Activity should be started. 3883 * See {@link android.content.Context#startActivity(Intent, Bundle) 3884 * Context.startActivity(Intent, Bundle)} for more details. 3885 * 3886 * @throws android.content.ActivityNotFoundException 3887 * 3888 * @see #startActivity 3889 * @see #startActivityForResult 3890 */ 3891 public void startActivityFromChild(Activity child, Intent intent, 3892 int requestCode, Bundle options) { 3893 Instrumentation.ActivityResult ar = 3894 mInstrumentation.execStartActivity( 3895 this, mMainThread.getApplicationThread(), mToken, child, 3896 intent, requestCode, options); 3897 if (ar != null) { 3898 mMainThread.sendActivityResult( 3899 mToken, child.mEmbeddedID, requestCode, 3900 ar.getResultCode(), ar.getResultData()); 3901 } 3902 } 3903 3904 /** 3905 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} 3906 * with no options. 3907 * 3908 * @param fragment The fragment making the call. 3909 * @param intent The intent to start. 3910 * @param requestCode Reply request code. < 0 if reply is not requested. 3911 * 3912 * @throws android.content.ActivityNotFoundException 3913 * 3914 * @see Fragment#startActivity 3915 * @see Fragment#startActivityForResult 3916 */ 3917 public void startActivityFromFragment(Fragment fragment, Intent intent, 3918 int requestCode) { 3919 startActivityFromFragment(fragment, intent, requestCode, null); 3920 } 3921 3922 /** 3923 * This is called when a Fragment in this activity calls its 3924 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} 3925 * method. 3926 * 3927 * <p>This method throws {@link android.content.ActivityNotFoundException} 3928 * if there was no Activity found to run the given Intent. 3929 * 3930 * @param fragment The fragment making the call. 3931 * @param intent The intent to start. 3932 * @param requestCode Reply request code. < 0 if reply is not requested. 3933 * @param options Additional options for how the Activity should be started. 3934 * See {@link android.content.Context#startActivity(Intent, Bundle) 3935 * Context.startActivity(Intent, Bundle)} for more details. 3936 * 3937 * @throws android.content.ActivityNotFoundException 3938 * 3939 * @see Fragment#startActivity 3940 * @see Fragment#startActivityForResult 3941 */ 3942 public void startActivityFromFragment(Fragment fragment, Intent intent, 3943 int requestCode, Bundle options) { 3944 Instrumentation.ActivityResult ar = 3945 mInstrumentation.execStartActivity( 3946 this, mMainThread.getApplicationThread(), mToken, fragment, 3947 intent, requestCode, options); 3948 if (ar != null) { 3949 mMainThread.sendActivityResult( 3950 mToken, fragment.mWho, requestCode, 3951 ar.getResultCode(), ar.getResultData()); 3952 } 3953 } 3954 3955 /** 3956 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, 3957 * int, Intent, int, int, int, Bundle)} with no options. 3958 */ 3959 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3960 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3961 int extraFlags) 3962 throws IntentSender.SendIntentException { 3963 startIntentSenderFromChild(child, intent, requestCode, fillInIntent, 3964 flagsMask, flagsValues, extraFlags, null); 3965 } 3966 3967 /** 3968 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but 3969 * taking a IntentSender; see 3970 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} 3971 * for more information. 3972 */ 3973 public void startIntentSenderFromChild(Activity child, IntentSender intent, 3974 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, 3975 int extraFlags, Bundle options) 3976 throws IntentSender.SendIntentException { 3977 startIntentSenderForResultInner(intent, requestCode, fillInIntent, 3978 flagsMask, flagsValues, child, options); 3979 } 3980 3981 /** 3982 * Call immediately after one of the flavors of {@link #startActivity(Intent)} 3983 * or {@link #finish} to specify an explicit transition animation to 3984 * perform next. 3985 * 3986 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative 3987 * to using this with starting activities is to supply the desired animation 3988 * information through a {@link ActivityOptions} bundle to 3989 * {@link #startActivity(Intent, Bundle) or a related function. This allows 3990 * you to specify a custom animation even when starting an activity from 3991 * outside the context of the current top activity. 3992 * 3993 * @param enterAnim A resource ID of the animation resource to use for 3994 * the incoming activity. Use 0 for no animation. 3995 * @param exitAnim A resource ID of the animation resource to use for 3996 * the outgoing activity. Use 0 for no animation. 3997 */ 3998 public void overridePendingTransition(int enterAnim, int exitAnim) { 3999 try { 4000 ActivityManagerNative.getDefault().overridePendingTransition( 4001 mToken, getPackageName(), enterAnim, exitAnim); 4002 } catch (RemoteException e) { 4003 } 4004 } 4005 4006 /** 4007 * Call this to set the result that your activity will return to its 4008 * caller. 4009 * 4010 * @param resultCode The result code to propagate back to the originating 4011 * activity, often RESULT_CANCELED or RESULT_OK 4012 * 4013 * @see #RESULT_CANCELED 4014 * @see #RESULT_OK 4015 * @see #RESULT_FIRST_USER 4016 * @see #setResult(int, Intent) 4017 */ 4018 public final void setResult(int resultCode) { 4019 synchronized (this) { 4020 mResultCode = resultCode; 4021 mResultData = null; 4022 } 4023 } 4024 4025 /** 4026 * Call this to set the result that your activity will return to its 4027 * caller. 4028 * 4029 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent 4030 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION 4031 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION 4032 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the 4033 * Activity receiving the result access to the specific URIs in the Intent. 4034 * Access will remain until the Activity has finished (it will remain across the hosting 4035 * process being killed and other temporary destruction) and will be added 4036 * to any existing set of URI permissions it already holds. 4037 * 4038 * @param resultCode The result code to propagate back to the originating 4039 * activity, often RESULT_CANCELED or RESULT_OK 4040 * @param data The data to propagate back to the originating activity. 4041 * 4042 * @see #RESULT_CANCELED 4043 * @see #RESULT_OK 4044 * @see #RESULT_FIRST_USER 4045 * @see #setResult(int) 4046 */ 4047 public final void setResult(int resultCode, Intent data) { 4048 synchronized (this) { 4049 mResultCode = resultCode; 4050 mResultData = data; 4051 } 4052 } 4053 4054 /** 4055 * Return the name of the package that invoked this activity. This is who 4056 * the data in {@link #setResult setResult()} will be sent to. You can 4057 * use this information to validate that the recipient is allowed to 4058 * receive the data. 4059 * 4060 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4061 * did not use the {@link #startActivityForResult} 4062 * form that includes a request code), then the calling package will be 4063 * null.</p> 4064 * 4065 * <p class="note">Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, 4066 * the result from this method was unstable. If the process hosting the calling 4067 * package was no longer running, it would return null instead of the proper package 4068 * name. You can use {@link #getCallingActivity()} and retrieve the package name 4069 * from that instead.</p> 4070 * 4071 * @return The package of the activity that will receive your 4072 * reply, or null if none. 4073 */ 4074 public String getCallingPackage() { 4075 try { 4076 return ActivityManagerNative.getDefault().getCallingPackage(mToken); 4077 } catch (RemoteException e) { 4078 return null; 4079 } 4080 } 4081 4082 /** 4083 * Return the name of the activity that invoked this activity. This is 4084 * who the data in {@link #setResult setResult()} will be sent to. You 4085 * can use this information to validate that the recipient is allowed to 4086 * receive the data. 4087 * 4088 * <p class="note">Note: if the calling activity is not expecting a result (that is it 4089 * did not use the {@link #startActivityForResult} 4090 * form that includes a request code), then the calling package will be 4091 * null. 4092 * 4093 * @return The ComponentName of the activity that will receive your 4094 * reply, or null if none. 4095 */ 4096 public ComponentName getCallingActivity() { 4097 try { 4098 return ActivityManagerNative.getDefault().getCallingActivity(mToken); 4099 } catch (RemoteException e) { 4100 return null; 4101 } 4102 } 4103 4104 /** 4105 * Control whether this activity's main window is visible. This is intended 4106 * only for the special case of an activity that is not going to show a 4107 * UI itself, but can't just finish prior to onResume() because it needs 4108 * to wait for a service binding or such. Setting this to false allows 4109 * you to prevent your UI from being shown during that time. 4110 * 4111 * <p>The default value for this is taken from the 4112 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. 4113 */ 4114 public void setVisible(boolean visible) { 4115 if (mVisibleFromClient != visible) { 4116 mVisibleFromClient = visible; 4117 if (mVisibleFromServer) { 4118 if (visible) makeVisible(); 4119 else mDecor.setVisibility(View.INVISIBLE); 4120 } 4121 } 4122 } 4123 4124 void makeVisible() { 4125 if (!mWindowAdded) { 4126 ViewManager wm = getWindowManager(); 4127 wm.addView(mDecor, getWindow().getAttributes()); 4128 mWindowAdded = true; 4129 } 4130 mDecor.setVisibility(View.VISIBLE); 4131 } 4132 4133 /** 4134 * Check to see whether this activity is in the process of finishing, 4135 * either because you called {@link #finish} on it or someone else 4136 * has requested that it finished. This is often used in 4137 * {@link #onPause} to determine whether the activity is simply pausing or 4138 * completely finishing. 4139 * 4140 * @return If the activity is finishing, returns true; else returns false. 4141 * 4142 * @see #finish 4143 */ 4144 public boolean isFinishing() { 4145 return mFinished; 4146 } 4147 4148 /** 4149 * Returns true if the final {@link #onDestroy()} call has been made 4150 * on the Activity, so this instance is now dead. 4151 */ 4152 public boolean isDestroyed() { 4153 return mDestroyed; 4154 } 4155 4156 /** 4157 * Check to see whether this activity is in the process of being destroyed in order to be 4158 * recreated with a new configuration. This is often used in 4159 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed 4160 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. 4161 * 4162 * @return If the activity is being torn down in order to be recreated with a new configuration, 4163 * returns true; else returns false. 4164 */ 4165 public boolean isChangingConfigurations() { 4166 return mChangingConfigurations; 4167 } 4168 4169 /** 4170 * Cause this Activity to be recreated with a new instance. This results 4171 * in essentially the same flow as when the Activity is created due to 4172 * a configuration change -- the current instance will go through its 4173 * lifecycle to {@link #onDestroy} and a new instance then created after it. 4174 */ 4175 public void recreate() { 4176 if (mParent != null) { 4177 throw new IllegalStateException("Can only be called on top-level activity"); 4178 } 4179 if (Looper.myLooper() != mMainThread.getLooper()) { 4180 throw new IllegalStateException("Must be called from main thread"); 4181 } 4182 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); 4183 } 4184 4185 /** 4186 * Call this when your activity is done and should be closed. The 4187 * ActivityResult is propagated back to whoever launched you via 4188 * onActivityResult(). 4189 */ 4190 public void finish() { 4191 if (mParent == null) { 4192 int resultCode; 4193 Intent resultData; 4194 synchronized (this) { 4195 resultCode = mResultCode; 4196 resultData = mResultData; 4197 } 4198 if (false) Log.v(TAG, "Finishing self: token=" + mToken); 4199 try { 4200 if (resultData != null) { 4201 resultData.prepareToLeaveProcess(); 4202 } 4203 if (ActivityManagerNative.getDefault() 4204 .finishActivity(mToken, resultCode, resultData)) { 4205 mFinished = true; 4206 } 4207 } catch (RemoteException e) { 4208 // Empty 4209 } 4210 } else { 4211 mParent.finishFromChild(this); 4212 } 4213 } 4214 4215 /** 4216 * Finish this activity as well as all activities immediately below it 4217 * in the current task that have the same affinity. This is typically 4218 * used when an application can be launched on to another task (such as 4219 * from an ACTION_VIEW of a content type it understands) and the user 4220 * has used the up navigation to switch out of the current task and in 4221 * to its own task. In this case, if the user has navigated down into 4222 * any other activities of the second application, all of those should 4223 * be removed from the original task as part of the task switch. 4224 * 4225 * <p>Note that this finish does <em>not</em> allow you to deliver results 4226 * to the previous activity, and an exception will be thrown if you are trying 4227 * to do so.</p> 4228 */ 4229 public void finishAffinity() { 4230 if (mParent != null) { 4231 throw new IllegalStateException("Can not be called from an embedded activity"); 4232 } 4233 if (mResultCode != RESULT_CANCELED || mResultData != null) { 4234 throw new IllegalStateException("Can not be called to deliver a result"); 4235 } 4236 try { 4237 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { 4238 mFinished = true; 4239 } 4240 } catch (RemoteException e) { 4241 // Empty 4242 } 4243 } 4244 4245 /** 4246 * This is called when a child activity of this one calls its 4247 * {@link #finish} method. The default implementation simply calls 4248 * finish() on this activity (the parent), finishing the entire group. 4249 * 4250 * @param child The activity making the call. 4251 * 4252 * @see #finish 4253 */ 4254 public void finishFromChild(Activity child) { 4255 finish(); 4256 } 4257 4258 /** 4259 * Force finish another activity that you had previously started with 4260 * {@link #startActivityForResult}. 4261 * 4262 * @param requestCode The request code of the activity that you had 4263 * given to startActivityForResult(). If there are multiple 4264 * activities started with this request code, they 4265 * will all be finished. 4266 */ 4267 public void finishActivity(int requestCode) { 4268 if (mParent == null) { 4269 try { 4270 ActivityManagerNative.getDefault() 4271 .finishSubActivity(mToken, mEmbeddedID, requestCode); 4272 } catch (RemoteException e) { 4273 // Empty 4274 } 4275 } else { 4276 mParent.finishActivityFromChild(this, requestCode); 4277 } 4278 } 4279 4280 /** 4281 * This is called when a child activity of this one calls its 4282 * finishActivity(). 4283 * 4284 * @param child The activity making the call. 4285 * @param requestCode Request code that had been used to start the 4286 * activity. 4287 */ 4288 public void finishActivityFromChild(Activity child, int requestCode) { 4289 try { 4290 ActivityManagerNative.getDefault() 4291 .finishSubActivity(mToken, child.mEmbeddedID, requestCode); 4292 } catch (RemoteException e) { 4293 // Empty 4294 } 4295 } 4296 4297 /** 4298 * Called when an activity you launched exits, giving you the requestCode 4299 * you started it with, the resultCode it returned, and any additional 4300 * data from it. The <var>resultCode</var> will be 4301 * {@link #RESULT_CANCELED} if the activity explicitly returned that, 4302 * didn't return any result, or crashed during its operation. 4303 * 4304 * <p>You will receive this call immediately before onResume() when your 4305 * activity is re-starting. 4306 * 4307 * @param requestCode The integer request code originally supplied to 4308 * startActivityForResult(), allowing you to identify who this 4309 * result came from. 4310 * @param resultCode The integer result code returned by the child activity 4311 * through its setResult(). 4312 * @param data An Intent, which can return result data to the caller 4313 * (various data can be attached to Intent "extras"). 4314 * 4315 * @see #startActivityForResult 4316 * @see #createPendingResult 4317 * @see #setResult(int) 4318 */ 4319 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 4320 } 4321 4322 /** 4323 * Create a new PendingIntent object which you can hand to others 4324 * for them to use to send result data back to your 4325 * {@link #onActivityResult} callback. The created object will be either 4326 * one-shot (becoming invalid after a result is sent back) or multiple 4327 * (allowing any number of results to be sent through it). 4328 * 4329 * @param requestCode Private request code for the sender that will be 4330 * associated with the result data when it is returned. The sender can not 4331 * modify this value, allowing you to identify incoming results. 4332 * @param data Default data to supply in the result, which may be modified 4333 * by the sender. 4334 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, 4335 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, 4336 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, 4337 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, 4338 * or any of the flags as supported by 4339 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts 4340 * of the intent that can be supplied when the actual send happens. 4341 * 4342 * @return Returns an existing or new PendingIntent matching the given 4343 * parameters. May return null only if 4344 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been 4345 * supplied. 4346 * 4347 * @see PendingIntent 4348 */ 4349 public PendingIntent createPendingResult(int requestCode, Intent data, 4350 int flags) { 4351 String packageName = getPackageName(); 4352 try { 4353 data.prepareToLeaveProcess(); 4354 IIntentSender target = 4355 ActivityManagerNative.getDefault().getIntentSender( 4356 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, 4357 mParent == null ? mToken : mParent.mToken, 4358 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, 4359 UserHandle.myUserId()); 4360 return target != null ? new PendingIntent(target) : null; 4361 } catch (RemoteException e) { 4362 // Empty 4363 } 4364 return null; 4365 } 4366 4367 /** 4368 * Change the desired orientation of this activity. If the activity 4369 * is currently in the foreground or otherwise impacting the screen 4370 * orientation, the screen will immediately be changed (possibly causing 4371 * the activity to be restarted). Otherwise, this will be used the next 4372 * time the activity is visible. 4373 * 4374 * @param requestedOrientation An orientation constant as used in 4375 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4376 */ 4377 public void setRequestedOrientation(int requestedOrientation) { 4378 if (mParent == null) { 4379 try { 4380 ActivityManagerNative.getDefault().setRequestedOrientation( 4381 mToken, requestedOrientation); 4382 } catch (RemoteException e) { 4383 // Empty 4384 } 4385 } else { 4386 mParent.setRequestedOrientation(requestedOrientation); 4387 } 4388 } 4389 4390 /** 4391 * Return the current requested orientation of the activity. This will 4392 * either be the orientation requested in its component's manifest, or 4393 * the last requested orientation given to 4394 * {@link #setRequestedOrientation(int)}. 4395 * 4396 * @return Returns an orientation constant as used in 4397 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. 4398 */ 4399 public int getRequestedOrientation() { 4400 if (mParent == null) { 4401 try { 4402 return ActivityManagerNative.getDefault() 4403 .getRequestedOrientation(mToken); 4404 } catch (RemoteException e) { 4405 // Empty 4406 } 4407 } else { 4408 return mParent.getRequestedOrientation(); 4409 } 4410 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; 4411 } 4412 4413 /** 4414 * Return the identifier of the task this activity is in. This identifier 4415 * will remain the same for the lifetime of the activity. 4416 * 4417 * @return Task identifier, an opaque integer. 4418 */ 4419 public int getTaskId() { 4420 try { 4421 return ActivityManagerNative.getDefault() 4422 .getTaskForActivity(mToken, false); 4423 } catch (RemoteException e) { 4424 return -1; 4425 } 4426 } 4427 4428 /** 4429 * Return whether this activity is the root of a task. The root is the 4430 * first activity in a task. 4431 * 4432 * @return True if this is the root activity, else false. 4433 */ 4434 public boolean isTaskRoot() { 4435 try { 4436 return ActivityManagerNative.getDefault() 4437 .getTaskForActivity(mToken, true) >= 0; 4438 } catch (RemoteException e) { 4439 return false; 4440 } 4441 } 4442 4443 /** 4444 * Move the task containing this activity to the back of the activity 4445 * stack. The activity's order within the task is unchanged. 4446 * 4447 * @param nonRoot If false then this only works if the activity is the root 4448 * of a task; if true it will work for any activity in 4449 * a task. 4450 * 4451 * @return If the task was moved (or it was already at the 4452 * back) true is returned, else false. 4453 */ 4454 public boolean moveTaskToBack(boolean nonRoot) { 4455 try { 4456 return ActivityManagerNative.getDefault().moveActivityTaskToBack( 4457 mToken, nonRoot); 4458 } catch (RemoteException e) { 4459 // Empty 4460 } 4461 return false; 4462 } 4463 4464 /** 4465 * Returns class name for this activity with the package prefix removed. 4466 * This is the default name used to read and write settings. 4467 * 4468 * @return The local class name. 4469 */ 4470 public String getLocalClassName() { 4471 final String pkg = getPackageName(); 4472 final String cls = mComponent.getClassName(); 4473 int packageLen = pkg.length(); 4474 if (!cls.startsWith(pkg) || cls.length() <= packageLen 4475 || cls.charAt(packageLen) != '.') { 4476 return cls; 4477 } 4478 return cls.substring(packageLen+1); 4479 } 4480 4481 /** 4482 * Returns complete component name of this activity. 4483 * 4484 * @return Returns the complete component name for this activity 4485 */ 4486 public ComponentName getComponentName() 4487 { 4488 return mComponent; 4489 } 4490 4491 /** 4492 * Retrieve a {@link SharedPreferences} object for accessing preferences 4493 * that are private to this activity. This simply calls the underlying 4494 * {@link #getSharedPreferences(String, int)} method by passing in this activity's 4495 * class name as the preferences name. 4496 * 4497 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default 4498 * operation, {@link #MODE_WORLD_READABLE} and 4499 * {@link #MODE_WORLD_WRITEABLE} to control permissions. 4500 * 4501 * @return Returns the single SharedPreferences instance that can be used 4502 * to retrieve and modify the preference values. 4503 */ 4504 public SharedPreferences getPreferences(int mode) { 4505 return getSharedPreferences(getLocalClassName(), mode); 4506 } 4507 4508 private void ensureSearchManager() { 4509 if (mSearchManager != null) { 4510 return; 4511 } 4512 4513 mSearchManager = new SearchManager(this, null); 4514 } 4515 4516 @Override 4517 public Object getSystemService(String name) { 4518 if (getBaseContext() == null) { 4519 throw new IllegalStateException( 4520 "System services not available to Activities before onCreate()"); 4521 } 4522 4523 if (WINDOW_SERVICE.equals(name)) { 4524 return mWindowManager; 4525 } else if (SEARCH_SERVICE.equals(name)) { 4526 ensureSearchManager(); 4527 return mSearchManager; 4528 } 4529 return super.getSystemService(name); 4530 } 4531 4532 /** 4533 * Change the title associated with this activity. If this is a 4534 * top-level activity, the title for its window will change. If it 4535 * is an embedded activity, the parent can do whatever it wants 4536 * with it. 4537 */ 4538 public void setTitle(CharSequence title) { 4539 mTitle = title; 4540 onTitleChanged(title, mTitleColor); 4541 4542 if (mParent != null) { 4543 mParent.onChildTitleChanged(this, title); 4544 } 4545 } 4546 4547 /** 4548 * Change the title associated with this activity. If this is a 4549 * top-level activity, the title for its window will change. If it 4550 * is an embedded activity, the parent can do whatever it wants 4551 * with it. 4552 */ 4553 public void setTitle(int titleId) { 4554 setTitle(getText(titleId)); 4555 } 4556 4557 public void setTitleColor(int textColor) { 4558 mTitleColor = textColor; 4559 onTitleChanged(mTitle, textColor); 4560 } 4561 4562 public final CharSequence getTitle() { 4563 return mTitle; 4564 } 4565 4566 public final int getTitleColor() { 4567 return mTitleColor; 4568 } 4569 4570 protected void onTitleChanged(CharSequence title, int color) { 4571 if (mTitleReady) { 4572 final Window win = getWindow(); 4573 if (win != null) { 4574 win.setTitle(title); 4575 if (color != 0) { 4576 win.setTitleColor(color); 4577 } 4578 } 4579 } 4580 } 4581 4582 protected void onChildTitleChanged(Activity childActivity, CharSequence title) { 4583 } 4584 4585 /** 4586 * Sets the visibility of the progress bar in the title. 4587 * <p> 4588 * In order for the progress bar to be shown, the feature must be requested 4589 * via {@link #requestWindowFeature(int)}. 4590 * 4591 * @param visible Whether to show the progress bars in the title. 4592 */ 4593 public final void setProgressBarVisibility(boolean visible) { 4594 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : 4595 Window.PROGRESS_VISIBILITY_OFF); 4596 } 4597 4598 /** 4599 * Sets the visibility of the indeterminate progress bar in the title. 4600 * <p> 4601 * In order for the progress bar to be shown, the feature must be requested 4602 * via {@link #requestWindowFeature(int)}. 4603 * 4604 * @param visible Whether to show the progress bars in the title. 4605 */ 4606 public final void setProgressBarIndeterminateVisibility(boolean visible) { 4607 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, 4608 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); 4609 } 4610 4611 /** 4612 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular 4613 * is always indeterminate). 4614 * <p> 4615 * In order for the progress bar to be shown, the feature must be requested 4616 * via {@link #requestWindowFeature(int)}. 4617 * 4618 * @param indeterminate Whether the horizontal progress bar should be indeterminate. 4619 */ 4620 public final void setProgressBarIndeterminate(boolean indeterminate) { 4621 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4622 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); 4623 } 4624 4625 /** 4626 * Sets the progress for the progress bars in the title. 4627 * <p> 4628 * In order for the progress bar to be shown, the feature must be requested 4629 * via {@link #requestWindowFeature(int)}. 4630 * 4631 * @param progress The progress for the progress bar. Valid ranges are from 4632 * 0 to 10000 (both inclusive). If 10000 is given, the progress 4633 * bar will be completely filled and will fade out. 4634 */ 4635 public final void setProgress(int progress) { 4636 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); 4637 } 4638 4639 /** 4640 * Sets the secondary progress for the progress bar in the title. This 4641 * progress is drawn between the primary progress (set via 4642 * {@link #setProgress(int)} and the background. It can be ideal for media 4643 * scenarios such as showing the buffering progress while the default 4644 * progress shows the play progress. 4645 * <p> 4646 * In order for the progress bar to be shown, the feature must be requested 4647 * via {@link #requestWindowFeature(int)}. 4648 * 4649 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from 4650 * 0 to 10000 (both inclusive). 4651 */ 4652 public final void setSecondaryProgress(int secondaryProgress) { 4653 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, 4654 secondaryProgress + Window.PROGRESS_SECONDARY_START); 4655 } 4656 4657 /** 4658 * Suggests an audio stream whose volume should be changed by the hardware 4659 * volume controls. 4660 * <p> 4661 * The suggested audio stream will be tied to the window of this Activity. 4662 * If the Activity is switched, the stream set here is no longer the 4663 * suggested stream. The client does not need to save and restore the old 4664 * suggested stream value in onPause and onResume. 4665 * 4666 * @param streamType The type of the audio stream whose volume should be 4667 * changed by the hardware volume controls. It is not guaranteed that 4668 * the hardware volume controls will always change this stream's 4669 * volume (for example, if a call is in progress, its stream's volume 4670 * may be changed instead). To reset back to the default, use 4671 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. 4672 */ 4673 public final void setVolumeControlStream(int streamType) { 4674 getWindow().setVolumeControlStream(streamType); 4675 } 4676 4677 /** 4678 * Gets the suggested audio stream whose volume should be changed by the 4679 * harwdare volume controls. 4680 * 4681 * @return The suggested audio stream type whose volume should be changed by 4682 * the hardware volume controls. 4683 * @see #setVolumeControlStream(int) 4684 */ 4685 public final int getVolumeControlStream() { 4686 return getWindow().getVolumeControlStream(); 4687 } 4688 4689 /** 4690 * Runs the specified action on the UI thread. If the current thread is the UI 4691 * thread, then the action is executed immediately. If the current thread is 4692 * not the UI thread, the action is posted to the event queue of the UI thread. 4693 * 4694 * @param action the action to run on the UI thread 4695 */ 4696 public final void runOnUiThread(Runnable action) { 4697 if (Thread.currentThread() != mUiThread) { 4698 mHandler.post(action); 4699 } else { 4700 action.run(); 4701 } 4702 } 4703 4704 /** 4705 * Standard implementation of 4706 * {@link android.view.LayoutInflater.Factory#onCreateView} used when 4707 * inflating with the LayoutInflater returned by {@link #getSystemService}. 4708 * This implementation does nothing and is for 4709 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps 4710 * should use {@link #onCreateView(View, String, Context, AttributeSet)}. 4711 * 4712 * @see android.view.LayoutInflater#createView 4713 * @see android.view.Window#getLayoutInflater 4714 */ 4715 public View onCreateView(String name, Context context, AttributeSet attrs) { 4716 return null; 4717 } 4718 4719 /** 4720 * Standard implementation of 4721 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} 4722 * used when inflating with the LayoutInflater returned by {@link #getSystemService}. 4723 * This implementation handles <fragment> tags to embed fragments inside 4724 * of the activity. 4725 * 4726 * @see android.view.LayoutInflater#createView 4727 * @see android.view.Window#getLayoutInflater 4728 */ 4729 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { 4730 if (!"fragment".equals(name)) { 4731 return onCreateView(name, context, attrs); 4732 } 4733 4734 String fname = attrs.getAttributeValue(null, "class"); 4735 TypedArray a = 4736 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); 4737 if (fname == null) { 4738 fname = a.getString(com.android.internal.R.styleable.Fragment_name); 4739 } 4740 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); 4741 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); 4742 a.recycle(); 4743 4744 int containerId = parent != null ? parent.getId() : 0; 4745 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { 4746 throw new IllegalArgumentException(attrs.getPositionDescription() 4747 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); 4748 } 4749 4750 // If we restored from a previous state, we may already have 4751 // instantiated this fragment from the state and should use 4752 // that instance instead of making a new one. 4753 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; 4754 if (fragment == null && tag != null) { 4755 fragment = mFragments.findFragmentByTag(tag); 4756 } 4757 if (fragment == null && containerId != View.NO_ID) { 4758 fragment = mFragments.findFragmentById(containerId); 4759 } 4760 4761 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" 4762 + Integer.toHexString(id) + " fname=" + fname 4763 + " existing=" + fragment); 4764 if (fragment == null) { 4765 fragment = Fragment.instantiate(this, fname); 4766 fragment.mFromLayout = true; 4767 fragment.mFragmentId = id != 0 ? id : containerId; 4768 fragment.mContainerId = containerId; 4769 fragment.mTag = tag; 4770 fragment.mInLayout = true; 4771 fragment.mFragmentManager = mFragments; 4772 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4773 mFragments.addFragment(fragment, true); 4774 4775 } else if (fragment.mInLayout) { 4776 // A fragment already exists and it is not one we restored from 4777 // previous state. 4778 throw new IllegalArgumentException(attrs.getPositionDescription() 4779 + ": Duplicate id 0x" + Integer.toHexString(id) 4780 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) 4781 + " with another fragment for " + fname); 4782 } else { 4783 // This fragment was retained from a previous instance; get it 4784 // going now. 4785 fragment.mInLayout = true; 4786 // If this fragment is newly instantiated (either right now, or 4787 // from last saved state), then give it the attributes to 4788 // initialize itself. 4789 if (!fragment.mRetaining) { 4790 fragment.onInflate(this, attrs, fragment.mSavedFragmentState); 4791 } 4792 mFragments.moveToState(fragment); 4793 } 4794 4795 if (fragment.mView == null) { 4796 throw new IllegalStateException("Fragment " + fname 4797 + " did not create a view."); 4798 } 4799 if (id != 0) { 4800 fragment.mView.setId(id); 4801 } 4802 if (fragment.mView.getTag() == null) { 4803 fragment.mView.setTag(tag); 4804 } 4805 return fragment.mView; 4806 } 4807 4808 /** 4809 * Print the Activity's state into the given stream. This gets invoked if 4810 * you run "adb shell dumpsys activity <activity_component_name>". 4811 * 4812 * @param prefix Desired prefix to prepend at each line of output. 4813 * @param fd The raw file descriptor that the dump is being sent to. 4814 * @param writer The PrintWriter to which you should dump your state. This will be 4815 * closed for you after you return. 4816 * @param args additional arguments to the dump request. 4817 */ 4818 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4819 dumpInner(prefix, fd, writer, args); 4820 } 4821 4822 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 4823 writer.print(prefix); writer.print("Local Activity "); 4824 writer.print(Integer.toHexString(System.identityHashCode(this))); 4825 writer.println(" State:"); 4826 String innerPrefix = prefix + " "; 4827 writer.print(innerPrefix); writer.print("mResumed="); 4828 writer.print(mResumed); writer.print(" mStopped="); 4829 writer.print(mStopped); writer.print(" mFinished="); 4830 writer.println(mFinished); 4831 writer.print(innerPrefix); writer.print("mLoadersStarted="); 4832 writer.println(mLoadersStarted); 4833 writer.print(innerPrefix); writer.print("mChangingConfigurations="); 4834 writer.println(mChangingConfigurations); 4835 writer.print(innerPrefix); writer.print("mCurrentConfig="); 4836 writer.println(mCurrentConfig); 4837 if (mLoaderManager != null) { 4838 writer.print(prefix); writer.print("Loader Manager "); 4839 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); 4840 writer.println(":"); 4841 mLoaderManager.dump(prefix + " ", fd, writer, args); 4842 } 4843 mFragments.dump(prefix, fd, writer, args); 4844 writer.print(prefix); writer.println("View Hierarchy:"); 4845 dumpViewHierarchy(prefix + " ", writer, getWindow().getDecorView()); 4846 } 4847 4848 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 4849 writer.print(prefix); 4850 if (view == null) { 4851 writer.println("null"); 4852 return; 4853 } 4854 writer.println(view.toString()); 4855 if (!(view instanceof ViewGroup)) { 4856 return; 4857 } 4858 ViewGroup grp = (ViewGroup)view; 4859 final int N = grp.getChildCount(); 4860 if (N <= 0) { 4861 return; 4862 } 4863 prefix = prefix + " "; 4864 for (int i=0; i<N; i++) { 4865 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 4866 } 4867 } 4868 4869 /** 4870 * Bit indicating that this activity is "immersive" and should not be 4871 * interrupted by notifications if possible. 4872 * 4873 * This value is initially set by the manifest property 4874 * <code>android:immersive</code> but may be changed at runtime by 4875 * {@link #setImmersive}. 4876 * 4877 * @see #setImmersive(boolean) 4878 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4879 */ 4880 public boolean isImmersive() { 4881 try { 4882 return ActivityManagerNative.getDefault().isImmersive(mToken); 4883 } catch (RemoteException e) { 4884 return false; 4885 } 4886 } 4887 4888 /** 4889 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a 4890 * fullscreen opaque Activity. 4891 * <p> 4892 * Call this whenever the background of a translucent Activity has changed to become opaque. 4893 * Doing so will allow the {@link android.view.Surface} of the Activity behind to be released. 4894 * <p> 4895 * This call has no effect on non-translucent activities or on activities with the 4896 * {@link android.R.attr#windowIsFloating} attribute. 4897 * 4898 * @see #convertToTranslucent(TranslucentConversionListener) 4899 * @see TranslucentConversionListener 4900 */ 4901 public void convertFromTranslucent() { 4902 try { 4903 mTranslucentCallback = null; 4904 ActivityManagerNative.getDefault().convertFromTranslucent(mToken); 4905 } catch (RemoteException e) { 4906 // pass 4907 } 4908 } 4909 4910 /** 4911 * Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from 4912 * opaque to translucent following a call to {@link #convertFromTranslucent()}. 4913 * <p> 4914 * Calling this allows the Activity behind this one to be seen again. Once all such Activities 4915 * have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will 4916 * be called indicating that it is safe to make this activity translucent again. Until 4917 * {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image 4918 * behind the frontmost Activity will be indeterminate. 4919 * <p> 4920 * This call has no effect on non-translucent activities or on activities with the 4921 * {@link android.R.attr#windowIsFloating} attribute. 4922 * 4923 * @param callback the method to call when all visible Activities behind this one have been 4924 * drawn and it is safe to make this Activity translucent again. 4925 * 4926 * @see #convertFromTranslucent() 4927 * @see TranslucentConversionListener 4928 */ 4929 public void convertToTranslucent(TranslucentConversionListener callback) { 4930 try { 4931 mTranslucentCallback = callback; 4932 ActivityManagerNative.getDefault().convertToTranslucent(mToken); 4933 } catch (RemoteException e) { 4934 // pass 4935 } 4936 } 4937 4938 /** @hide */ 4939 void onTranslucentConversionComplete(boolean drawComplete) { 4940 if (mTranslucentCallback != null) { 4941 mTranslucentCallback.onTranslucentConversionComplete(drawComplete); 4942 mTranslucentCallback = null; 4943 } 4944 } 4945 4946 /** 4947 * Adjust the current immersive mode setting. 4948 * 4949 * Note that changing this value will have no effect on the activity's 4950 * {@link android.content.pm.ActivityInfo} structure; that is, if 4951 * <code>android:immersive</code> is set to <code>true</code> 4952 * in the application's manifest entry for this activity, the {@link 4953 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will 4954 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4955 * FLAG_IMMERSIVE} bit set. 4956 * 4957 * @see #isImmersive() 4958 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE 4959 */ 4960 public void setImmersive(boolean i) { 4961 try { 4962 ActivityManagerNative.getDefault().setImmersive(mToken, i); 4963 } catch (RemoteException e) { 4964 // pass 4965 } 4966 } 4967 4968 /** 4969 * Start an action mode. 4970 * 4971 * @param callback Callback that will manage lifecycle events for this context mode 4972 * @return The ContextMode that was started, or null if it was canceled 4973 * 4974 * @see ActionMode 4975 */ 4976 public ActionMode startActionMode(ActionMode.Callback callback) { 4977 return mWindow.getDecorView().startActionMode(callback); 4978 } 4979 4980 /** 4981 * Give the Activity a chance to control the UI for an action mode requested 4982 * by the system. 4983 * 4984 * <p>Note: If you are looking for a notification callback that an action mode 4985 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> 4986 * 4987 * @param callback The callback that should control the new action mode 4988 * @return The new action mode, or <code>null</code> if the activity does not want to 4989 * provide special handling for this action mode. (It will be handled by the system.) 4990 */ 4991 @Override 4992 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { 4993 initActionBar(); 4994 if (mActionBar != null) { 4995 return mActionBar.startActionMode(callback); 4996 } 4997 return null; 4998 } 4999 5000 /** 5001 * Notifies the Activity that an action mode has been started. 5002 * Activity subclasses overriding this method should call the superclass implementation. 5003 * 5004 * @param mode The new action mode. 5005 */ 5006 @Override 5007 public void onActionModeStarted(ActionMode mode) { 5008 } 5009 5010 /** 5011 * Notifies the activity that an action mode has finished. 5012 * Activity subclasses overriding this method should call the superclass implementation. 5013 * 5014 * @param mode The action mode that just finished. 5015 */ 5016 @Override 5017 public void onActionModeFinished(ActionMode mode) { 5018 } 5019 5020 /** 5021 * Returns true if the app should recreate the task when navigating 'up' from this activity 5022 * by using targetIntent. 5023 * 5024 * <p>If this method returns false the app can trivially call 5025 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform 5026 * up navigation. If this method returns false, the app should synthesize a new task stack 5027 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p> 5028 * 5029 * @param targetIntent An intent representing the target destination for up navigation 5030 * @return true if navigating up should recreate a new task stack, false if the same task 5031 * should be used for the destination 5032 */ 5033 public boolean shouldUpRecreateTask(Intent targetIntent) { 5034 try { 5035 PackageManager pm = getPackageManager(); 5036 ComponentName cn = targetIntent.getComponent(); 5037 if (cn == null) { 5038 cn = targetIntent.resolveActivity(pm); 5039 } 5040 ActivityInfo info = pm.getActivityInfo(cn, 0); 5041 if (info.taskAffinity == null) { 5042 return false; 5043 } 5044 return !ActivityManagerNative.getDefault() 5045 .targetTaskAffinityMatchesActivity(mToken, info.taskAffinity); 5046 } catch (RemoteException e) { 5047 return false; 5048 } catch (NameNotFoundException e) { 5049 return false; 5050 } 5051 } 5052 5053 /** 5054 * Navigate from this activity to the activity specified by upIntent, finishing this activity 5055 * in the process. If the activity indicated by upIntent already exists in the task's history, 5056 * this activity and all others before the indicated activity in the history stack will be 5057 * finished. 5058 * 5059 * <p>If the indicated activity does not appear in the history stack, this will finish 5060 * each activity in this task until the root activity of the task is reached, resulting in 5061 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy 5062 * when an activity may be reached by a path not passing through a canonical parent 5063 * activity.</p> 5064 * 5065 * <p>This method should be used when performing up navigation from within the same task 5066 * as the destination. If up navigation should cross tasks in some cases, see 5067 * {@link #shouldUpRecreateTask(Intent)}.</p> 5068 * 5069 * @param upIntent An intent representing the target destination for up navigation 5070 * 5071 * @return true if up navigation successfully reached the activity indicated by upIntent and 5072 * upIntent was delivered to it. false if an instance of the indicated activity could 5073 * not be found and this activity was simply finished normally. 5074 */ 5075 public boolean navigateUpTo(Intent upIntent) { 5076 if (mParent == null) { 5077 ComponentName destInfo = upIntent.getComponent(); 5078 if (destInfo == null) { 5079 destInfo = upIntent.resolveActivity(getPackageManager()); 5080 if (destInfo == null) { 5081 return false; 5082 } 5083 upIntent = new Intent(upIntent); 5084 upIntent.setComponent(destInfo); 5085 } 5086 int resultCode; 5087 Intent resultData; 5088 synchronized (this) { 5089 resultCode = mResultCode; 5090 resultData = mResultData; 5091 } 5092 if (resultData != null) { 5093 resultData.prepareToLeaveProcess(); 5094 } 5095 try { 5096 upIntent.prepareToLeaveProcess(); 5097 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, 5098 resultCode, resultData); 5099 } catch (RemoteException e) { 5100 return false; 5101 } 5102 } else { 5103 return mParent.navigateUpToFromChild(this, upIntent); 5104 } 5105 } 5106 5107 /** 5108 * This is called when a child activity of this one calls its 5109 * {@link #navigateUpTo} method. The default implementation simply calls 5110 * navigateUpTo(upIntent) on this activity (the parent). 5111 * 5112 * @param child The activity making the call. 5113 * @param upIntent An intent representing the target destination for up navigation 5114 * 5115 * @return true if up navigation successfully reached the activity indicated by upIntent and 5116 * upIntent was delivered to it. false if an instance of the indicated activity could 5117 * not be found and this activity was simply finished normally. 5118 */ 5119 public boolean navigateUpToFromChild(Activity child, Intent upIntent) { 5120 return navigateUpTo(upIntent); 5121 } 5122 5123 /** 5124 * Obtain an {@link Intent} that will launch an explicit target activity specified by 5125 * this activity's logical parent. The logical parent is named in the application's manifest 5126 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute. 5127 * Activity subclasses may override this method to modify the Intent returned by 5128 * super.getParentActivityIntent() or to implement a different mechanism of retrieving 5129 * the parent intent entirely. 5130 * 5131 * @return a new Intent targeting the defined parent of this activity or null if 5132 * there is no valid parent. 5133 */ 5134 public Intent getParentActivityIntent() { 5135 final String parentName = mActivityInfo.parentActivityName; 5136 if (TextUtils.isEmpty(parentName)) { 5137 return null; 5138 } 5139 5140 // If the parent itself has no parent, generate a main activity intent. 5141 final ComponentName target = new ComponentName(this, parentName); 5142 try { 5143 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); 5144 final String parentActivity = parentInfo.parentActivityName; 5145 final Intent parentIntent = parentActivity == null 5146 ? Intent.makeMainActivity(target) 5147 : new Intent().setComponent(target); 5148 return parentIntent; 5149 } catch (NameNotFoundException e) { 5150 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + 5151 "' in manifest"); 5152 return null; 5153 } 5154 } 5155 5156 // ------------------ Internal API ------------------ 5157 5158 final void setParent(Activity parent) { 5159 mParent = parent; 5160 } 5161 5162 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, 5163 Application application, Intent intent, ActivityInfo info, CharSequence title, 5164 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, 5165 Configuration config) { 5166 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, 5167 lastNonConfigurationInstances, config); 5168 } 5169 5170 final void attach(Context context, ActivityThread aThread, 5171 Instrumentation instr, IBinder token, int ident, 5172 Application application, Intent intent, ActivityInfo info, 5173 CharSequence title, Activity parent, String id, 5174 NonConfigurationInstances lastNonConfigurationInstances, 5175 Configuration config) { 5176 attachBaseContext(context); 5177 5178 mFragments.attachActivity(this, mContainer, null); 5179 5180 mWindow = PolicyManager.makeNewWindow(this); 5181 mWindow.setCallback(this); 5182 mWindow.getLayoutInflater().setPrivateFactory(this); 5183 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { 5184 mWindow.setSoftInputMode(info.softInputMode); 5185 } 5186 if (info.uiOptions != 0) { 5187 mWindow.setUiOptions(info.uiOptions); 5188 } 5189 mUiThread = Thread.currentThread(); 5190 5191 mMainThread = aThread; 5192 mInstrumentation = instr; 5193 mToken = token; 5194 mIdent = ident; 5195 mApplication = application; 5196 mIntent = intent; 5197 mComponent = intent.getComponent(); 5198 mActivityInfo = info; 5199 mTitle = title; 5200 mParent = parent; 5201 mEmbeddedID = id; 5202 mLastNonConfigurationInstances = lastNonConfigurationInstances; 5203 5204 mWindow.setWindowManager( 5205 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), 5206 mToken, mComponent.flattenToString(), 5207 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); 5208 if (mParent != null) { 5209 mWindow.setContainer(mParent.getWindow()); 5210 } 5211 mWindowManager = mWindow.getWindowManager(); 5212 mCurrentConfig = config; 5213 } 5214 5215 /** @hide */ 5216 public final IBinder getActivityToken() { 5217 return mParent != null ? mParent.getActivityToken() : mToken; 5218 } 5219 5220 final void performCreate(Bundle icicle) { 5221 onCreate(icicle); 5222 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( 5223 com.android.internal.R.styleable.Window_windowNoDisplay, false); 5224 mFragments.dispatchActivityCreated(); 5225 } 5226 5227 final void performStart() { 5228 mFragments.noteStateNotSaved(); 5229 mCalled = false; 5230 mFragments.execPendingActions(); 5231 mInstrumentation.callActivityOnStart(this); 5232 if (!mCalled) { 5233 throw new SuperNotCalledException( 5234 "Activity " + mComponent.toShortString() + 5235 " did not call through to super.onStart()"); 5236 } 5237 mFragments.dispatchStart(); 5238 if (mAllLoaderManagers != null) { 5239 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()]; 5240 mAllLoaderManagers.values().toArray(loaders); 5241 if (loaders != null) { 5242 for (int i=0; i<loaders.length; i++) { 5243 LoaderManagerImpl lm = loaders[i]; 5244 lm.finishRetain(); 5245 lm.doReportStart(); 5246 } 5247 } 5248 } 5249 } 5250 5251 final void performRestart() { 5252 mFragments.noteStateNotSaved(); 5253 5254 if (mStopped) { 5255 mStopped = false; 5256 if (mToken != null && mParent == null) { 5257 WindowManagerGlobal.getInstance().setStoppedState(mToken, false); 5258 } 5259 5260 synchronized (mManagedCursors) { 5261 final int N = mManagedCursors.size(); 5262 for (int i=0; i<N; i++) { 5263 ManagedCursor mc = mManagedCursors.get(i); 5264 if (mc.mReleased || mc.mUpdated) { 5265 if (!mc.mCursor.requery()) { 5266 if (getApplicationInfo().targetSdkVersion 5267 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5268 throw new IllegalStateException( 5269 "trying to requery an already closed cursor " 5270 + mc.mCursor); 5271 } 5272 } 5273 mc.mReleased = false; 5274 mc.mUpdated = false; 5275 } 5276 } 5277 } 5278 5279 mCalled = false; 5280 mInstrumentation.callActivityOnRestart(this); 5281 if (!mCalled) { 5282 throw new SuperNotCalledException( 5283 "Activity " + mComponent.toShortString() + 5284 " did not call through to super.onRestart()"); 5285 } 5286 performStart(); 5287 } 5288 } 5289 5290 final void performResume() { 5291 performRestart(); 5292 5293 mFragments.execPendingActions(); 5294 5295 mLastNonConfigurationInstances = null; 5296 5297 mCalled = false; 5298 // mResumed is set by the instrumentation 5299 mInstrumentation.callActivityOnResume(this); 5300 if (!mCalled) { 5301 throw new SuperNotCalledException( 5302 "Activity " + mComponent.toShortString() + 5303 " did not call through to super.onResume()"); 5304 } 5305 5306 // Now really resume, and install the current status bar and menu. 5307 mCalled = false; 5308 5309 mFragments.dispatchResume(); 5310 mFragments.execPendingActions(); 5311 5312 onPostResume(); 5313 if (!mCalled) { 5314 throw new SuperNotCalledException( 5315 "Activity " + mComponent.toShortString() + 5316 " did not call through to super.onPostResume()"); 5317 } 5318 } 5319 5320 final void performPause() { 5321 mDoReportFullyDrawn = false; 5322 mFragments.dispatchPause(); 5323 mCalled = false; 5324 onPause(); 5325 mResumed = false; 5326 if (!mCalled && getApplicationInfo().targetSdkVersion 5327 >= android.os.Build.VERSION_CODES.GINGERBREAD) { 5328 throw new SuperNotCalledException( 5329 "Activity " + mComponent.toShortString() + 5330 " did not call through to super.onPause()"); 5331 } 5332 mResumed = false; 5333 } 5334 5335 final void performUserLeaving() { 5336 onUserInteraction(); 5337 onUserLeaveHint(); 5338 } 5339 5340 final void performStop() { 5341 mDoReportFullyDrawn = false; 5342 if (mLoadersStarted) { 5343 mLoadersStarted = false; 5344 if (mLoaderManager != null) { 5345 if (!mChangingConfigurations) { 5346 mLoaderManager.doStop(); 5347 } else { 5348 mLoaderManager.doRetain(); 5349 } 5350 } 5351 } 5352 5353 if (!mStopped) { 5354 if (mWindow != null) { 5355 mWindow.closeAllPanels(); 5356 } 5357 5358 if (mToken != null && mParent == null) { 5359 WindowManagerGlobal.getInstance().setStoppedState(mToken, true); 5360 } 5361 5362 mFragments.dispatchStop(); 5363 5364 mCalled = false; 5365 mInstrumentation.callActivityOnStop(this); 5366 if (!mCalled) { 5367 throw new SuperNotCalledException( 5368 "Activity " + mComponent.toShortString() + 5369 " did not call through to super.onStop()"); 5370 } 5371 5372 synchronized (mManagedCursors) { 5373 final int N = mManagedCursors.size(); 5374 for (int i=0; i<N; i++) { 5375 ManagedCursor mc = mManagedCursors.get(i); 5376 if (!mc.mReleased) { 5377 mc.mCursor.deactivate(); 5378 mc.mReleased = true; 5379 } 5380 } 5381 } 5382 5383 mStopped = true; 5384 } 5385 mResumed = false; 5386 } 5387 5388 final void performDestroy() { 5389 mDestroyed = true; 5390 mWindow.destroy(); 5391 mFragments.dispatchDestroy(); 5392 onDestroy(); 5393 if (mLoaderManager != null) { 5394 mLoaderManager.doDestroy(); 5395 } 5396 } 5397 5398 /** 5399 * @hide 5400 */ 5401 public final boolean isResumed() { 5402 return mResumed; 5403 } 5404 5405 void dispatchActivityResult(String who, int requestCode, 5406 int resultCode, Intent data) { 5407 if (false) Log.v( 5408 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode 5409 + ", resCode=" + resultCode + ", data=" + data); 5410 mFragments.noteStateNotSaved(); 5411 if (who == null) { 5412 onActivityResult(requestCode, resultCode, data); 5413 } else { 5414 Fragment frag = mFragments.findFragmentByWho(who); 5415 if (frag != null) { 5416 frag.onActivityResult(requestCode, resultCode, data); 5417 } 5418 } 5419 } 5420 5421 /** 5422 * Interface for informing a translucent {@link Activity} once all visible activities below it 5423 * have completed drawing. This is necessary only after an {@link Activity} has been made 5424 * opaque using {@link Activity#convertFromTranslucent()} and before it has been drawn 5425 * translucent again following a call to {@link 5426 * Activity#convertToTranslucent(TranslucentConversionListener)}. 5427 */ 5428 public interface TranslucentConversionListener { 5429 /** 5430 * Callback made following {@link Activity#convertToTranslucent} once all visible Activities 5431 * below the top one have been redrawn. Following this callback it is safe to make the top 5432 * Activity translucent because the underlying Activity has been drawn. 5433 * 5434 * @param drawComplete True if the background Activity has drawn itself. False if a timeout 5435 * occurred waiting for the Activity to complete drawing. 5436 * 5437 * @see Activity#convertFromTranslucent() 5438 * @see Activity#convertToTranslucent(TranslucentConversionListener) 5439 */ 5440 public void onTranslucentConversionComplete(boolean drawComplete); 5441 } 5442} 5443