2 * Copyright (C) 2006 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 import com.android.internal.app.ActionBarImpl;
20 import com.android.internal.policy.PolicyManager;
22 import android.content.ComponentCallbacks2;
23 import android.content.ComponentName;
24 import android.content.ContentResolver;
25 import android.content.Context;
26 import android.content.CursorLoader;
27 import android.content.IIntentSender;
28 import android.content.Intent;
29 import android.content.IntentSender;
30 import android.content.SharedPreferences;
31 import android.content.pm.ActivityInfo;
32 import android.content.pm.PackageManager;
33 import android.content.pm.PackageManager.NameNotFoundException;
34 import android.content.res.Configuration;
35 import android.content.res.Resources;
36 import android.content.res.TypedArray;
37 import android.database.Cursor;
38 import android.graphics.Bitmap;
39 import android.graphics.Canvas;
40 import android.graphics.drawable.Drawable;
41 import android.media.AudioManager;
42 import android.net.Uri;
43 import android.os.Build;
44 import android.os.Bundle;
45 import android.os.Handler;
46 import android.os.IBinder;
47 import android.os.Looper;
48 import android.os.Parcelable;
49 import android.os.RemoteException;
50 import android.os.StrictMode;
51 import android.os.UserHandle;
52 import android.text.Selection;
53 import android.text.SpannableStringBuilder;
54 import android.text.TextUtils;
55 import android.text.method.TextKeyListener;
56 import android.util.AttributeSet;
57 import android.util.EventLog;
58 import android.util.Log;
59 import android.util.Slog;
60 import android.util.SparseArray;
61 import android.view.ActionMode;
62 import android.view.ContextMenu;
63 import android.view.ContextMenu.ContextMenuInfo;
64 import android.view.ContextThemeWrapper;
65 import android.view.KeyEvent;
66 import android.view.LayoutInflater;
67 import android.view.Menu;
68 import android.view.MenuInflater;
69 import android.view.MenuItem;
70 import android.view.MotionEvent;
71 import android.view.View;
72 import android.view.View.OnCreateContextMenuListener;
73 import android.view.ViewGroup;
74 import android.view.ViewGroup.LayoutParams;
75 import android.view.ViewManager;
76 import android.view.Window;
77 import android.view.WindowManager;
78 import android.view.WindowManagerGlobal;
79 import android.view.accessibility.AccessibilityEvent;
80 import android.widget.AdapterView;
82 import java.io.FileDescriptor;
83 import java.io.PrintWriter;
84 import java.util.ArrayList;
85 import java.util.HashMap;
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}).
96 * There are two methods almost all subclasses of Activity will implement:
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
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).
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>
116 * <p>Topics covered here:
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>
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>
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>
142 * <a name="Fragments"></a>
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.
150 * <a name="ActivityLifecycle"></a>
151 * <h3>Activity Lifecycle</h3>
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>
159 * <p>An activity has essentially four states:</p>
161 * <li> If an activity in the foreground of the screen (at the top of
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
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>
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>
186 * <p><img src="../../../images/activity_lifecycle.png"
187 * alt="State diagram for an Android Activity Lifecycle." border="0" /></p>
189 * <p>There are three key loops you may be interested in monitoring within your
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().
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
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
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>
233 * <pre class="prettyprint">
234 * public class Activity extends ApplicationContext {
235 * protected void onCreate(Bundle savedInstanceState);
237 * protected void onStart();
239 * protected void onRestart();
241 * protected void onResume();
243 * protected void onPause();
245 * protected void onStop();
247 * protected void onDestroy();
251 * <p>In general the movement through an activity's lifecycle looks like
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" />
261 * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr>
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>
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
280 * <p>Always followed by <code>onStart()</code></td>
281 * <td align="center">No</td>
282 * <td align="center"><code>onStart()</code></td>
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>
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>
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>
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
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>
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>
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>
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>
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>
376 * <a name="ConfigurationChanges"></a>
377 * <h3>Configuration Changes</h3>
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
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>
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>
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>
414 * <a name="StartingActivities"></a>
415 * <h3>Starting Activities and Getting Results</h3>
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>
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}
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>
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>
446 * <pre class="prettyprint">
447 * public class MyActivity extends Activity {
450 * static final int PICK_CONTACT_REQUEST = 0;
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);
464 * protected void onActivityResult(int requestCode, int resultCode,
466 * if (requestCode == PICK_CONTACT_REQUEST) {
467 * if (resultCode == RESULT_OK) {
468 * // A contact was picked. Here we will just display it
470 * startActivity(new Intent(Intent.ACTION_VIEW, data));
477 * <a name="SavingPersistentState"></a>
478 * <h3>Saving Persistent State</h3>
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>
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>
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>
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>
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>
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>
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>
536 * <p>Here is an excerpt from a calendar activity that stores the user's
537 * preferred view mode in its persistent settings:</p>
539 * <pre class="prettyprint">
540 * public class CalendarActivity extends Activity {
543 * static final int DAY_VIEW_MODE = 0;
544 * static final int WEEK_VIEW_MODE = 1;
546 * private SharedPreferences mPrefs;
547 * private int mCurViewMode;
549 * protected void onCreate(Bundle savedInstanceState) {
550 * super.onCreate(savedInstanceState);
552 * SharedPreferences mPrefs = getSharedPreferences();
553 * mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE);
556 * protected void onPause() {
559 * SharedPreferences.Editor ed = mPrefs.edit();
560 * ed.putInt("view_mode", mCurViewMode);
566 * <a name="Permissions"></a>
567 * <h3>Permissions</h3>
569 * <p>The ability to start a particular Activity can be enforced when it is
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.
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.
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.
590 * <a name="ProcessLifecycle"></a>
591 * <h3>Process Lifecycle</h3>
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).
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.
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,
642 public 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;
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;
656 static final String FRAGMENTS_TAG = "android:fragments";
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_";
664 private static class ManagedDialog {
668 private SparseArray<ManagedDialog> mManagedDialogs;
670 // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called.
671 private Instrumentation mInstrumentation;
672 private IBinder mToken;
674 /*package*/ String mEmbeddedID;
675 private Application mApplication;
676 /*package*/ Intent mIntent;
677 private ComponentName mComponent;
678 /*package*/ ActivityInfo mActivityInfo;
679 /*package*/ ActivityThread mMainThread;
682 boolean mCheckedForLoaderManager;
683 boolean mLoadersStarted;
684 /*package*/ boolean mResumed;
685 private boolean mStopped;
687 boolean mStartedActivity;
688 private boolean mDestroyed;
689 /** true if the activity is going through a transient pause */
690 /*package*/ boolean mTemporaryPause = false;
691 /** true if the activity is being destroyed in order to recreate it with a new configuration */
692 /*package*/ boolean mChangingConfigurations = false;
693 /*package*/ int mConfigChangeFlags;
694 /*package*/ Configuration mCurrentConfig;
695 private SearchManager mSearchManager;
696 private MenuInflater mMenuInflater;
698 static final class NonConfigurationInstances {
700 HashMap<String, Object> children;
701 ArrayList<Fragment> fragments;
702 HashMap<String, LoaderManagerImpl> loaders;
704 /* package */ NonConfigurationInstances mLastNonConfigurationInstances;
706 private Window mWindow;
708 private WindowManager mWindowManager;
709 /*package*/ View mDecor = null;
710 /*package*/ boolean mWindowAdded = false;
711 /*package*/ boolean mVisibleFromServer = false;
712 /*package*/ boolean mVisibleFromClient = true;
713 /*package*/ ActionBarImpl mActionBar = null;
714 private boolean mEnableDefaultActionBarUp;
716 private CharSequence mTitle;
717 private int mTitleColor = 0;
719 final FragmentManagerImpl mFragments = new FragmentManagerImpl();
720 final FragmentContainer mContainer = new FragmentContainer() {
722 public View findViewById(int id) {
723 return Activity.this.findViewById(id);
727 HashMap<String, LoaderManagerImpl> mAllLoaderManagers;
728 LoaderManagerImpl mLoaderManager;
730 private static final class ManagedCursor {
731 ManagedCursor(Cursor cursor) {
737 private final Cursor mCursor;
738 private boolean mReleased;
739 private boolean mUpdated;
741 private final ArrayList<ManagedCursor> mManagedCursors =
742 new ArrayList<ManagedCursor>();
744 // protected by synchronized (this)
745 int mResultCode = RESULT_CANCELED;
746 Intent mResultData = null;
748 private boolean mTitleReady = false;
750 private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE;
751 private SpannableStringBuilder mDefaultKeySsb = null;
753 protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused};
755 @SuppressWarnings("unused")
756 private final Object mInstanceTracker = StrictMode.trackActivity(this);
758 private Thread mUiThread;
759 final Handler mHandler = new Handler();
761 /** Return the intent that started this activity. */
762 public Intent getIntent() {
767 * Change the intent returned by {@link #getIntent}. This holds a
768 * reference to the given intent; it does not copy it. Often used in
769 * conjunction with {@link #onNewIntent}.
771 * @param newIntent The new Intent object to return from getIntent
776 public void setIntent(Intent newIntent) {
780 /** Return the application that owns this activity. */
781 public final Application getApplication() {
785 /** Is this activity embedded inside of another activity? */
786 public final boolean isChild() {
787 return mParent != null;
790 /** Return the parent activity if this view is an embedded child. */
791 public final Activity getParent() {
795 /** Retrieve the window manager for showing custom windows. */
796 public WindowManager getWindowManager() {
797 return mWindowManager;
801 * Retrieve the current {@link android.view.Window} for the activity.
802 * This can be used to directly access parts of the Window API that
803 * are not available through Activity/Screen.
805 * @return Window The current window, or null if the activity is not
808 public Window getWindow() {
813 * Return the LoaderManager for this fragment, creating it if needed.
815 public LoaderManager getLoaderManager() {
816 if (mLoaderManager != null) {
817 return mLoaderManager;
819 mCheckedForLoaderManager = true;
820 mLoaderManager = getLoaderManager(null, mLoadersStarted, true);
821 return mLoaderManager;
824 LoaderManagerImpl getLoaderManager(String who, boolean started, boolean create) {
825 if (mAllLoaderManagers == null) {
826 mAllLoaderManagers = new HashMap<String, LoaderManagerImpl>();
828 LoaderManagerImpl lm = mAllLoaderManagers.get(who);
831 lm = new LoaderManagerImpl(who, this, started);
832 mAllLoaderManagers.put(who, lm);
835 lm.updateActivity(this);
841 * Calls {@link android.view.Window#getCurrentFocus} on the
842 * Window of this Activity to return the currently focused view.
844 * @return View The current View with focus or null.
847 * @see android.view.Window#getCurrentFocus
849 public View getCurrentFocus() {
850 return mWindow != null ? mWindow.getCurrentFocus() : null;
854 * Called when the activity is starting. This is where most initialization
855 * should go: calling {@link #setContentView(int)} to inflate the
856 * activity's UI, using {@link #findViewById} to programmatically interact
857 * with widgets in the UI, calling
858 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve
859 * cursors for data being displayed, etc.
861 * <p>You can call {@link #finish} from within this function, in
862 * which case onDestroy() will be immediately called without any of the rest
863 * of the activity lifecycle ({@link #onStart}, {@link #onResume},
864 * {@link #onPause}, etc) executing.
866 * <p><em>Derived classes must call through to the super class's
867 * implementation of this method. If they do not, an exception will be
870 * @param savedInstanceState If the activity is being re-initialized after
871 * previously being shut down then this Bundle contains the data it most
872 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b>
875 * @see #onSaveInstanceState
876 * @see #onRestoreInstanceState
879 protected void onCreate(Bundle savedInstanceState) {
880 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState);
881 if (mLastNonConfigurationInstances != null) {
882 mAllLoaderManagers = mLastNonConfigurationInstances.loaders;
884 if (mActivityInfo.parentActivityName != null) {
885 if (mActionBar == null) {
886 mEnableDefaultActionBarUp = true;
888 mActionBar.setDefaultDisplayHomeAsUpEnabled(true);
891 if (savedInstanceState != null) {
892 Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG);
893 mFragments.restoreAllState(p, mLastNonConfigurationInstances != null
894 ? mLastNonConfigurationInstances.fragments : null);
896 mFragments.dispatchCreate();
897 getApplication().dispatchActivityCreated(this, savedInstanceState);
902 * The hook for {@link ActivityThread} to restore the state of this activity.
904 * Calls {@link #onSaveInstanceState(android.os.Bundle)} and
905 * {@link #restoreManagedDialogs(android.os.Bundle)}.
907 * @param savedInstanceState contains the saved state
909 final void performRestoreInstanceState(Bundle savedInstanceState) {
910 onRestoreInstanceState(savedInstanceState);
911 restoreManagedDialogs(savedInstanceState);
915 * This method is called after {@link #onStart} when the activity is
916 * being re-initialized from a previously saved state, given here in
917 * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate}
918 * to restore their state, but it is sometimes convenient to do it here
919 * after all of the initialization has been done or to allow subclasses to
920 * decide whether to use your default implementation. The default
921 * implementation of this method performs a restore of any view state that
922 * had previously been frozen by {@link #onSaveInstanceState}.
924 * <p>This method is called between {@link #onStart} and
925 * {@link #onPostCreate}.
927 * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}.
932 * @see #onSaveInstanceState
934 protected void onRestoreInstanceState(Bundle savedInstanceState) {
935 if (mWindow != null) {
936 Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG);
937 if (windowState != null) {
938 mWindow.restoreHierarchyState(windowState);
944 * Restore the state of any saved managed dialogs.
946 * @param savedInstanceState The bundle to restore from.
948 private void restoreManagedDialogs(Bundle savedInstanceState) {
949 final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG);
954 final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY);
955 final int numDialogs = ids.length;
956 mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs);
957 for (int i = 0; i < numDialogs; i++) {
958 final Integer dialogId = ids[i];
959 Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId));
960 if (dialogState != null) {
961 // Calling onRestoreInstanceState() below will invoke dispatchOnCreate
962 // so tell createDialog() not to do it, otherwise we get an exception
963 final ManagedDialog md = new ManagedDialog();
964 md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId));
965 md.mDialog = createDialog(dialogId, dialogState, md.mArgs);
966 if (md.mDialog != null) {
967 mManagedDialogs.put(dialogId, md);
968 onPrepareDialog(dialogId, md.mDialog, md.mArgs);
969 md.mDialog.onRestoreInstanceState(dialogState);
975 private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) {
976 final Dialog dialog = onCreateDialog(dialogId, args);
977 if (dialog == null) {
980 dialog.dispatchOnCreate(state);
984 private static String savedDialogKeyFor(int key) {
985 return SAVED_DIALOG_KEY_PREFIX + key;
988 private static String savedDialogArgsKeyFor(int key) {
989 return SAVED_DIALOG_ARGS_KEY_PREFIX + key;
993 * Called when activity start-up is complete (after {@link #onStart}
994 * and {@link #onRestoreInstanceState} have been called). Applications will
995 * generally not implement this method; it is intended for system
996 * classes to do final initialization after application code has run.
998 * <p><em>Derived classes must call through to the super class's
999 * implementation of this method. If they do not, an exception will be
1002 * @param savedInstanceState If the activity is being re-initialized after
1003 * previously being shut down then this Bundle contains the data it most
1004 * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b>
1007 protected void onPostCreate(Bundle savedInstanceState) {
1010 onTitleChanged(getTitle(), getTitleColor());
1016 * Called after {@link #onCreate} — or after {@link #onRestart} when
1017 * the activity had been stopped, but is now again being displayed to the
1018 * user. It will be followed by {@link #onResume}.
1020 * <p><em>Derived classes must call through to the super class's
1021 * implementation of this method. If they do not, an exception will be
1028 protected void onStart() {
1029 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this);
1032 if (!mLoadersStarted) {
1033 mLoadersStarted = true;
1034 if (mLoaderManager != null) {
1035 mLoaderManager.doStart();
1036 } else if (!mCheckedForLoaderManager) {
1037 mLoaderManager = getLoaderManager(null, mLoadersStarted, false);
1039 mCheckedForLoaderManager = true;
1042 getApplication().dispatchActivityStarted(this);
1046 * Called after {@link #onStop} when the current activity is being
1047 * re-displayed to the user (the user has navigated back to it). It will
1048 * be followed by {@link #onStart} and then {@link #onResume}.
1050 * <p>For activities that are using raw {@link Cursor} objects (instead of
1051 * creating them through
1052 * {@link #managedQuery(android.net.Uri , String[], String, String[], String)},
1053 * this is usually the place
1054 * where the cursor should be requeried (because you had deactivated it in
1057 * <p><em>Derived classes must call through to the super class's
1058 * implementation of this method. If they do not, an exception will be
1065 protected void onRestart() {
1070 * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or
1071 * {@link #onPause}, for your activity to start interacting with the user.
1072 * This is a good place to begin animations, open exclusive-access devices
1073 * (such as the camera), etc.
1075 * <p>Keep in mind that onResume is not the best indicator that your activity
1076 * is visible to the user; a system window such as the keyguard may be in
1077 * front. Use {@link #onWindowFocusChanged} to know for certain that your
1078 * activity is visible to the user (for example, to resume a game).
1080 * <p><em>Derived classes must call through to the super class's
1081 * implementation of this method. If they do not, an exception will be
1084 * @see #onRestoreInstanceState
1086 * @see #onPostResume
1089 protected void onResume() {
1090 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this);
1091 getApplication().dispatchActivityResumed(this);
1096 * Called when activity resume is complete (after {@link #onResume} has
1097 * been called). Applications will generally not implement this method;
1098 * it is intended for system classes to do final setup after application
1099 * resume code has run.
1101 * <p><em>Derived classes must call through to the super class's
1102 * implementation of this method. If they do not, an exception will be
1107 protected void onPostResume() {
1108 final Window win = getWindow();
1109 if (win != null) win.makeActive();
1110 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true);
1115 * This is called for activities that set launchMode to "singleTop" in
1116 * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP}
1117 * flag when calling {@link #startActivity}. In either case, when the
1118 * activity is re-launched while at the top of the activity stack instead
1119 * of a new instance of the activity being started, onNewIntent() will be
1120 * called on the existing instance with the Intent that was used to
1123 * <p>An activity will always be paused before receiving a new intent, so
1124 * you can count on {@link #onResume} being called after this method.
1126 * <p>Note that {@link #getIntent} still returns the original Intent. You
1127 * can use {@link #setIntent} to update it to this new Intent.
1129 * @param intent The new intent that was started for the activity.
1135 protected void onNewIntent(Intent intent) {
1139 * The hook for {@link ActivityThread} to save the state of this activity.
1141 * Calls {@link #onSaveInstanceState(android.os.Bundle)}
1142 * and {@link #saveManagedDialogs(android.os.Bundle)}.
1144 * @param outState The bundle to save the state to.
1146 final void performSaveInstanceState(Bundle outState) {
1147 onSaveInstanceState(outState);
1148 saveManagedDialogs(outState);
1149 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState);
1153 * Called to retrieve per-instance state from an activity before being killed
1154 * so that the state can be restored in {@link #onCreate} or
1155 * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method
1156 * will be passed to both).
1158 * <p>This method is called before an activity may be killed so that when it
1159 * comes back some time in the future it can restore its state. For example,
1160 * if activity B is launched in front of activity A, and at some point activity
1161 * A is killed to reclaim resources, activity A will have a chance to save the
1162 * current state of its user interface via this method so that when the user
1163 * returns to activity A, the state of the user interface can be restored
1164 * via {@link #onCreate} or {@link #onRestoreInstanceState}.
1166 * <p>Do not confuse this method with activity lifecycle callbacks such as
1167 * {@link #onPause}, which is always called when an activity is being placed
1168 * in the background or on its way to destruction, or {@link #onStop} which
1169 * is called before destruction. One example of when {@link #onPause} and
1170 * {@link #onStop} is called and not this method is when a user navigates back
1171 * from activity B to activity A: there is no need to call {@link #onSaveInstanceState}
1172 * on B because that particular instance will never be restored, so the
1173 * system avoids calling it. An example when {@link #onPause} is called and
1174 * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A:
1175 * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't
1176 * killed during the lifetime of B since the state of the user interface of
1177 * A will stay intact.
1179 * <p>The default implementation takes care of most of the UI per-instance
1180 * state for you by calling {@link android.view.View#onSaveInstanceState()} on each
1181 * view in the hierarchy that has an id, and by saving the id of the currently
1182 * focused view (all of which is restored by the default implementation of
1183 * {@link #onRestoreInstanceState}). If you override this method to save additional
1184 * information not captured by each individual view, you will likely want to
1185 * call through to the default implementation, otherwise be prepared to save
1186 * all of the state of each view yourself.
1188 * <p>If called, this method will occur before {@link #onStop}. There are
1189 * no guarantees about whether it will occur before or after {@link #onPause}.
1191 * @param outState Bundle in which to place your saved state.
1194 * @see #onRestoreInstanceState
1197 protected void onSaveInstanceState(Bundle outState) {
1198 outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState());
1199 Parcelable p = mFragments.saveAllState();
1201 outState.putParcelable(FRAGMENTS_TAG, p);
1203 getApplication().dispatchActivitySaveInstanceState(this, outState);
1207 * Save the state of any managed dialogs.
1209 * @param outState place to store the saved state.
1211 private void saveManagedDialogs(Bundle outState) {
1212 if (mManagedDialogs == null) {
1216 final int numDialogs = mManagedDialogs.size();
1217 if (numDialogs == 0) {
1221 Bundle dialogState = new Bundle();
1223 int[] ids = new int[mManagedDialogs.size()];
1225 // save each dialog's bundle, gather the ids
1226 for (int i = 0; i < numDialogs; i++) {
1227 final int key = mManagedDialogs.keyAt(i);
1229 final ManagedDialog md = mManagedDialogs.valueAt(i);
1230 dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState());
1231 if (md.mArgs != null) {
1232 dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs);
1236 dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids);
1237 outState.putBundle(SAVED_DIALOGS_TAG, dialogState);
1242 * Called as part of the activity lifecycle when an activity is going into
1243 * the background, but has not (yet) been killed. The counterpart to
1244 * {@link #onResume}.
1246 * <p>When activity B is launched in front of activity A, this callback will
1247 * be invoked on A. B will not be created until A's {@link #onPause} returns,
1248 * so be sure to not do anything lengthy here.
1250 * <p>This callback is mostly used for saving any persistent state the
1251 * activity is editing, to present a "edit in place" model to the user and
1252 * making sure nothing is lost if there are not enough resources to start
1253 * the new activity without first killing this one. This is also a good
1254 * place to do things like stop animations and other things that consume a
1255 * noticeable amount of CPU in order to make the switch to the next activity
1256 * as fast as possible, or to close resources that are exclusive access
1257 * such as the camera.
1259 * <p>In situations where the system needs more memory it may kill paused
1260 * processes to reclaim resources. Because of this, you should be sure
1261 * that all of your state is saved by the time you return from
1262 * this function. In general {@link #onSaveInstanceState} is used to save
1263 * per-instance state in the activity and this method is used to store
1264 * global persistent data (in content providers, files, etc.)
1266 * <p>After receiving this call you will usually receive a following call
1267 * to {@link #onStop} (after the next activity has been resumed and
1268 * displayed), however in some cases there will be a direct call back to
1269 * {@link #onResume} without going through the stopped state.
1271 * <p><em>Derived classes must call through to the super class's
1272 * implementation of this method. If they do not, an exception will be
1276 * @see #onSaveInstanceState
1279 protected void onPause() {
1280 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this);
1281 getApplication().dispatchActivityPaused(this);
1286 * Called as part of the activity lifecycle when an activity is about to go
1287 * into the background as the result of user choice. For example, when the
1288 * user presses the Home key, {@link #onUserLeaveHint} will be called, but
1289 * when an incoming phone call causes the in-call Activity to be automatically
1290 * brought to the foreground, {@link #onUserLeaveHint} will not be called on
1291 * the activity being interrupted. In cases when it is invoked, this method
1292 * is called right before the activity's {@link #onPause} callback.
1294 * <p>This callback and {@link #onUserInteraction} are intended to help
1295 * activities manage status bar notifications intelligently; specifically,
1296 * for helping activities determine the proper time to cancel a notfication.
1298 * @see #onUserInteraction()
1300 protected void onUserLeaveHint() {
1304 * Generate a new thumbnail for this activity. This method is called before
1305 * pausing the activity, and should draw into <var>outBitmap</var> the
1306 * imagery for the desired thumbnail in the dimensions of that bitmap. It
1307 * can use the given <var>canvas</var>, which is configured to draw into the
1308 * bitmap, for rendering if desired.
1310 * <p>The default implementation returns fails and does not draw a thumbnail;
1311 * this will result in the platform creating its own thumbnail if needed.
1313 * @param outBitmap The bitmap to contain the thumbnail.
1314 * @param canvas Can be used to render into the bitmap.
1316 * @return Return true if you have drawn into the bitmap; otherwise after
1317 * you return it will be filled with a default thumbnail.
1319 * @see #onCreateDescription
1320 * @see #onSaveInstanceState
1323 public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) {
1328 * Generate a new description for this activity. This method is called
1329 * before pausing the activity and can, if desired, return some textual
1330 * description of its current state to be displayed to the user.
1332 * <p>The default implementation returns null, which will cause you to
1333 * inherit the description from the previous activity. If all activities
1334 * return null, generally the label of the top activity will be used as the
1337 * @return A description of what the user is doing. It should be short and
1338 * sweet (only a few words).
1340 * @see #onCreateThumbnail
1341 * @see #onSaveInstanceState
1344 public CharSequence onCreateDescription() {
1349 * Called when you are no longer visible to the user. You will next
1350 * receive either {@link #onRestart}, {@link #onDestroy}, or nothing,
1351 * depending on later user activity.
1353 * <p>Note that this method may never be called, in low memory situations
1354 * where the system does not have enough memory to keep your activity's
1355 * process running after its {@link #onPause} method is called.
1357 * <p><em>Derived classes must call through to the super class's
1358 * implementation of this method. If they do not, an exception will be
1363 * @see #onSaveInstanceState
1366 protected void onStop() {
1367 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this);
1368 if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false);
1369 getApplication().dispatchActivityStopped(this);
1374 * Perform any final cleanup before an activity is destroyed. This can
1375 * happen either because the activity is finishing (someone called
1376 * {@link #finish} on it, or because the system is temporarily destroying
1377 * this instance of the activity to save space. You can distinguish
1378 * between these two scenarios with the {@link #isFinishing} method.
1380 * <p><em>Note: do not count on this method being called as a place for
1381 * saving data! For example, if an activity is editing data in a content
1382 * provider, those edits should be committed in either {@link #onPause} or
1383 * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to
1384 * free resources like threads that are associated with an activity, so
1385 * that a destroyed activity does not leave such things around while the
1386 * rest of its application is still running. There are situations where
1387 * the system will simply kill the activity's hosting process without
1388 * calling this method (or any others) in it, so it should not be used to
1389 * do things that are intended to remain around after the process goes
1392 * <p><em>Derived classes must call through to the super class's
1393 * implementation of this method. If they do not, an exception will be
1401 protected void onDestroy() {
1402 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this);
1405 // dismiss any dialogs we are managing.
1406 if (mManagedDialogs != null) {
1407 final int numDialogs = mManagedDialogs.size();
1408 for (int i = 0; i < numDialogs; i++) {
1409 final ManagedDialog md = mManagedDialogs.valueAt(i);
1410 if (md.mDialog.isShowing()) {
1411 md.mDialog.dismiss();
1414 mManagedDialogs = null;
1417 // close any cursors we are managing.
1418 synchronized (mManagedCursors) {
1419 int numCursors = mManagedCursors.size();
1420 for (int i = 0; i < numCursors; i++) {
1421 ManagedCursor c = mManagedCursors.get(i);
1426 mManagedCursors.clear();
1429 // Close any open search dialog
1430 if (mSearchManager != null) {
1431 mSearchManager.stopSearch();
1434 getApplication().dispatchActivityDestroyed(this);
1438 * Called by the system when the device configuration changes while your
1439 * activity is running. Note that this will <em>only</em> be called if
1440 * you have selected configurations you would like to handle with the
1441 * {@link android.R.attr#configChanges} attribute in your manifest. If
1442 * any configuration change occurs that is not selected to be reported
1443 * by that attribute, then instead of reporting it the system will stop
1444 * and restart the activity (to have it launched with the new
1447 * <p>At the time that this function has been called, your Resources
1448 * object will have been updated to return resource values matching the
1449 * new configuration.
1451 * @param newConfig The new device configuration.
1453 public void onConfigurationChanged(Configuration newConfig) {
1454 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig);
1457 mFragments.dispatchConfigurationChanged(newConfig);
1459 if (mWindow != null) {
1460 // Pass the configuration changed event to the window
1461 mWindow.onConfigurationChanged(newConfig);
1464 if (mActionBar != null) {
1465 // Do this last; the action bar will need to access
1466 // view changes from above.
1467 mActionBar.onConfigurationChanged(newConfig);
1472 * If this activity is being destroyed because it can not handle a
1473 * configuration parameter being changed (and thus its
1474 * {@link #onConfigurationChanged(Configuration)} method is
1475 * <em>not</em> being called), then you can use this method to discover
1476 * the set of changes that have occurred while in the process of being
1477 * destroyed. Note that there is no guarantee that these will be
1478 * accurate (other changes could have happened at any time), so you should
1479 * only use this as an optimization hint.
1481 * @return Returns a bit field of the configuration parameters that are
1482 * changing, as defined by the {@link android.content.res.Configuration}
1485 public int getChangingConfigurations() {
1486 return mConfigChangeFlags;
1490 * Retrieve the non-configuration instance data that was previously
1491 * returned by {@link #onRetainNonConfigurationInstance()}. This will
1492 * be available from the initial {@link #onCreate} and
1493 * {@link #onStart} calls to the new instance, allowing you to extract
1494 * any useful dynamic state from the previous instance.
1496 * <p>Note that the data you retrieve here should <em>only</em> be used
1497 * as an optimization for handling configuration changes. You should always
1498 * be able to handle getting a null pointer back, and an activity must
1499 * still be able to restore itself to its previous state (through the
1500 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this
1501 * function returns null.
1503 * @return Returns the object previously returned by
1504 * {@link #onRetainNonConfigurationInstance()}.
1506 * @deprecated Use the new {@link Fragment} API
1507 * {@link Fragment#setRetainInstance(boolean)} instead; this is also
1508 * available on older platforms through the Android compatibility package.
1511 public Object getLastNonConfigurationInstance() {
1512 return mLastNonConfigurationInstances != null
1513 ? mLastNonConfigurationInstances.activity : null;
1517 * Called by the system, as part of destroying an
1518 * activity due to a configuration change, when it is known that a new
1519 * instance will immediately be created for the new configuration. You
1520 * can return any object you like here, including the activity instance
1521 * itself, which can later be retrieved by calling
1522 * {@link #getLastNonConfigurationInstance()} in the new activity
1525 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
1526 * or later, consider instead using a {@link Fragment} with
1527 * {@link Fragment#setRetainInstance(boolean)
1528 * Fragment.setRetainInstance(boolean}.</em>
1530 * <p>This function is called purely as an optimization, and you must
1531 * not rely on it being called. When it is called, a number of guarantees
1532 * will be made to help optimize configuration switching:
1534 * <li> The function will be called between {@link #onStop} and
1535 * {@link #onDestroy}.
1536 * <li> A new instance of the activity will <em>always</em> be immediately
1537 * created after this one's {@link #onDestroy()} is called. In particular,
1538 * <em>no</em> messages will be dispatched during this time (when the returned
1539 * object does not have an activity to be associated with).
1540 * <li> The object you return here will <em>always</em> be available from
1541 * the {@link #getLastNonConfigurationInstance()} method of the following
1542 * activity instance as described there.
1545 * <p>These guarantees are designed so that an activity can use this API
1546 * to propagate extensive state from the old to new activity instance, from
1547 * loaded bitmaps, to network connections, to evenly actively running
1548 * threads. Note that you should <em>not</em> propagate any data that
1549 * may change based on the configuration, including any data loaded from
1550 * resources such as strings, layouts, or drawables.
1552 * <p>The guarantee of no message handling during the switch to the next
1553 * activity simplifies use with active objects. For example if your retained
1554 * state is an {@link android.os.AsyncTask} you are guaranteed that its
1555 * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will
1556 * not be called from the call here until you execute the next instance's
1557 * {@link #onCreate(Bundle)}. (Note however that there is of course no such
1558 * guarantee for {@link android.os.AsyncTask#doInBackground} since that is
1559 * running in a separate thread.)
1561 * @return Return any Object holding the desired state to propagate to the
1562 * next activity instance.
1564 * @deprecated Use the new {@link Fragment} API
1565 * {@link Fragment#setRetainInstance(boolean)} instead; this is also
1566 * available on older platforms through the Android compatibility package.
1568 public Object onRetainNonConfigurationInstance() {
1573 * Retrieve the non-configuration instance data that was previously
1574 * returned by {@link #onRetainNonConfigurationChildInstances()}. This will
1575 * be available from the initial {@link #onCreate} and
1576 * {@link #onStart} calls to the new instance, allowing you to extract
1577 * any useful dynamic state from the previous instance.
1579 * <p>Note that the data you retrieve here should <em>only</em> be used
1580 * as an optimization for handling configuration changes. You should always
1581 * be able to handle getting a null pointer back, and an activity must
1582 * still be able to restore itself to its previous state (through the
1583 * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this
1584 * function returns null.
1586 * @return Returns the object previously returned by
1587 * {@link #onRetainNonConfigurationChildInstances()}
1589 HashMap<String, Object> getLastNonConfigurationChildInstances() {
1590 return mLastNonConfigurationInstances != null
1591 ? mLastNonConfigurationInstances.children : null;
1595 * This method is similar to {@link #onRetainNonConfigurationInstance()} except that
1596 * it should return either a mapping from child activity id strings to arbitrary objects,
1597 * or null. This method is intended to be used by Activity framework subclasses that control a
1598 * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply
1599 * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null.
1601 HashMap<String,Object> onRetainNonConfigurationChildInstances() {
1605 NonConfigurationInstances retainNonConfigurationInstances() {
1606 Object activity = onRetainNonConfigurationInstance();
1607 HashMap<String, Object> children = onRetainNonConfigurationChildInstances();
1608 ArrayList<Fragment> fragments = mFragments.retainNonConfig();
1609 boolean retainLoaders = false;
1610 if (mAllLoaderManagers != null) {
1611 // prune out any loader managers that were already stopped and so
1612 // have nothing useful to retain.
1613 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()];
1614 mAllLoaderManagers.values().toArray(loaders);
1615 if (loaders != null) {
1616 for (int i=0; i<loaders.length; i++) {
1617 LoaderManagerImpl lm = loaders[i];
1618 if (lm.mRetaining) {
1619 retainLoaders = true;
1622 mAllLoaderManagers.remove(lm.mWho);
1627 if (activity == null && children == null && fragments == null && !retainLoaders) {
1631 NonConfigurationInstances nci = new NonConfigurationInstances();
1632 nci.activity = activity;
1633 nci.children = children;
1634 nci.fragments = fragments;
1635 nci.loaders = mAllLoaderManagers;
1639 public void onLowMemory() {
1640 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this);
1642 mFragments.dispatchLowMemory();
1645 public void onTrimMemory(int level) {
1646 if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level);
1648 mFragments.dispatchTrimMemory(level);
1652 * Return the FragmentManager for interacting with fragments associated
1653 * with this activity.
1655 public FragmentManager getFragmentManager() {
1659 void invalidateFragment(String who) {
1660 //Log.v(TAG, "invalidateFragmentIndex: index=" + index);
1661 if (mAllLoaderManagers != null) {
1662 LoaderManagerImpl lm = mAllLoaderManagers.get(who);
1663 if (lm != null && !lm.mRetaining) {
1665 mAllLoaderManagers.remove(who);
1671 * Called when a Fragment is being attached to this activity, immediately
1672 * after the call to its {@link Fragment#onAttach Fragment.onAttach()}
1673 * method and before {@link Fragment#onCreate Fragment.onCreate()}.
1675 public void onAttachFragment(Fragment fragment) {
1680 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)}
1681 * that gives the resulting {@link Cursor} to call
1682 * {@link #startManagingCursor} so that the activity will manage its
1683 * lifecycle for you.
1685 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
1686 * or later, consider instead using {@link LoaderManager} instead, available
1687 * via {@link #getLoaderManager()}.</em>
1689 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using
1690 * this method, because the activity will do that for you at the appropriate time. However, if
1691 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will
1692 * not</em> automatically close the cursor and, in that case, you must call
1693 * {@link Cursor#close()}.</p>
1695 * @param uri The URI of the content provider to query.
1696 * @param projection List of columns to return.
1697 * @param selection SQL WHERE clause.
1698 * @param sortOrder SQL ORDER BY clause.
1700 * @return The Cursor that was returned by query().
1702 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String)
1703 * @see #startManagingCursor
1706 * @deprecated Use {@link CursorLoader} instead.
1709 public final Cursor managedQuery(Uri uri, String[] projection, String selection,
1711 Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder);
1713 startManagingCursor(c);
1720 * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)}
1721 * that gives the resulting {@link Cursor} to call
1722 * {@link #startManagingCursor} so that the activity will manage its
1723 * lifecycle for you.
1725 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
1726 * or later, consider instead using {@link LoaderManager} instead, available
1727 * via {@link #getLoaderManager()}.</em>
1729 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on a cursor obtained using
1730 * this method, because the activity will do that for you at the appropriate time. However, if
1731 * you call {@link #stopManagingCursor} on a cursor from a managed query, the system <em>will
1732 * not</em> automatically close the cursor and, in that case, you must call
1733 * {@link Cursor#close()}.</p>
1735 * @param uri The URI of the content provider to query.
1736 * @param projection List of columns to return.
1737 * @param selection SQL WHERE clause.
1738 * @param selectionArgs The arguments to selection, if any ?s are pesent
1739 * @param sortOrder SQL ORDER BY clause.
1741 * @return The Cursor that was returned by query().
1743 * @see ContentResolver#query(android.net.Uri , String[], String, String[], String)
1744 * @see #startManagingCursor
1746 * @deprecated Use {@link CursorLoader} instead.
1749 public final Cursor managedQuery(Uri uri, String[] projection, String selection,
1750 String[] selectionArgs, String sortOrder) {
1751 Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);
1753 startManagingCursor(c);
1759 * This method allows the activity to take care of managing the given
1760 * {@link Cursor}'s lifecycle for you based on the activity's lifecycle.
1761 * That is, when the activity is stopped it will automatically call
1762 * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted
1763 * it will call {@link Cursor#requery} for you. When the activity is
1764 * destroyed, all managed Cursors will be closed automatically.
1766 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
1767 * or later, consider instead using {@link LoaderManager} instead, available
1768 * via {@link #getLoaderManager()}.</em>
1770 * <p><strong>Warning:</strong> Do not call {@link Cursor#close()} on cursor obtained from
1771 * {@link #managedQuery}, because the activity will do that for you at the appropriate time.
1772 * However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system
1773 * <em>will not</em> automatically close the cursor and, in that case, you must call
1774 * {@link Cursor#close()}.</p>
1776 * @param c The Cursor to be managed.
1778 * @see #managedQuery(android.net.Uri , String[], String, String[], String)
1779 * @see #stopManagingCursor
1781 * @deprecated Use the new {@link android.content.CursorLoader} class with
1782 * {@link LoaderManager} instead; this is also
1783 * available on older platforms through the Android compatibility package.
1786 public void startManagingCursor(Cursor c) {
1787 synchronized (mManagedCursors) {
1788 mManagedCursors.add(new ManagedCursor(c));
1793 * Given a Cursor that was previously given to
1794 * {@link #startManagingCursor}, stop the activity's management of that
1797 * <p><strong>Warning:</strong> After calling this method on a cursor from a managed query,
1798 * the system <em>will not</em> automatically close the cursor and you must call
1799 * {@link Cursor#close()}.</p>
1801 * @param c The Cursor that was being managed.
1803 * @see #startManagingCursor
1805 * @deprecated Use the new {@link android.content.CursorLoader} class with
1806 * {@link LoaderManager} instead; this is also
1807 * available on older platforms through the Android compatibility package.
1810 public void stopManagingCursor(Cursor c) {
1811 synchronized (mManagedCursors) {
1812 final int N = mManagedCursors.size();
1813 for (int i=0; i<N; i++) {
1814 ManagedCursor mc = mManagedCursors.get(i);
1815 if (mc.mCursor == c) {
1816 mManagedCursors.remove(i);
1824 * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}
1829 public void setPersistent(boolean isPersistent) {
1833 * Finds a view that was identified by the id attribute from the XML that
1834 * was processed in {@link #onCreate}.
1836 * @return The view if found or null otherwise.
1838 public View findViewById(int id) {
1839 return getWindow().findViewById(id);
1843 * Retrieve a reference to this activity's ActionBar.
1845 * @return The Activity's ActionBar, or null if it does not have one.
1847 public ActionBar getActionBar() {
1853 * Creates a new ActionBar, locates the inflated ActionBarView,
1854 * initializes the ActionBar with the view, and sets mActionBar.
1856 private void initActionBar() {
1857 Window window = getWindow();
1859 // Initializing the window decor can change window feature flags.
1860 // Make sure that we have the correct set before performing the test below.
1861 window.getDecorView();
1863 if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) {
1867 mActionBar = new ActionBarImpl(this);
1868 mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp);
1872 * Set the activity content from a layout resource. The resource will be
1873 * inflated, adding all top-level views to the activity.
1875 * @param layoutResID Resource ID to be inflated.
1877 * @see #setContentView(android.view.View)
1878 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
1880 public void setContentView(int layoutResID) {
1881 getWindow().setContentView(layoutResID);
1886 * Set the activity content to an explicit view. This view is placed
1887 * directly into the activity's view hierarchy. It can itself be a complex
1888 * view hierarchy. When calling this method, the layout parameters of the
1889 * specified view are ignored. Both the width and the height of the view are
1890 * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use
1891 * your own layout parameters, invoke
1892 * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)}
1895 * @param view The desired content to display.
1897 * @see #setContentView(int)
1898 * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
1900 public void setContentView(View view) {
1901 getWindow().setContentView(view);
1906 * Set the activity content to an explicit view. This view is placed
1907 * directly into the activity's view hierarchy. It can itself be a complex
1910 * @param view The desired content to display.
1911 * @param params Layout parameters for the view.
1913 * @see #setContentView(android.view.View)
1914 * @see #setContentView(int)
1916 public void setContentView(View view, ViewGroup.LayoutParams params) {
1917 getWindow().setContentView(view, params);
1922 * Add an additional content view to the activity. Added after any existing
1923 * ones in the activity -- existing views are NOT removed.
1925 * @param view The desired content to display.
1926 * @param params Layout parameters for the view.
1928 public void addContentView(View view, ViewGroup.LayoutParams params) {
1929 getWindow().addContentView(view, params);
1934 * Sets whether this activity is finished when touched outside its window's
1937 public void setFinishOnTouchOutside(boolean finish) {
1938 mWindow.setCloseOnTouchOutside(finish);
1942 * Use with {@link #setDefaultKeyMode} to turn off default handling of
1945 * @see #setDefaultKeyMode
1947 static public final int DEFAULT_KEYS_DISABLE = 0;
1949 * Use with {@link #setDefaultKeyMode} to launch the dialer during default
1952 * @see #setDefaultKeyMode
1954 static public final int DEFAULT_KEYS_DIALER = 1;
1956 * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in
1957 * default key handling.
1959 * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts.
1961 * @see #setDefaultKeyMode
1963 static public final int DEFAULT_KEYS_SHORTCUT = 2;
1965 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes
1966 * will start an application-defined search. (If the application or activity does not
1967 * actually define a search, the the keys will be ignored.)
1969 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details.
1971 * @see #setDefaultKeyMode
1973 static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3;
1976 * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes
1977 * will start a global search (typically web search, but some platforms may define alternate
1978 * methods for global search)
1980 * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details.
1982 * @see #setDefaultKeyMode
1984 static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4;
1987 * Select the default key handling for this activity. This controls what
1988 * will happen to key events that are not otherwise handled. The default
1989 * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the
1990 * floor. Other modes allow you to launch the dialer
1991 * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options
1992 * menu without requiring the menu key be held down
1993 * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL}
1994 * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}).
1996 * <p>Note that the mode selected here does not impact the default
1997 * handling of system keys, such as the "back" and "menu" keys, and your
1998 * activity and its views always get a first chance to receive and handle
1999 * all application keys.
2001 * @param mode The desired default key mode constant.
2003 * @see #DEFAULT_KEYS_DISABLE
2004 * @see #DEFAULT_KEYS_DIALER
2005 * @see #DEFAULT_KEYS_SHORTCUT
2006 * @see #DEFAULT_KEYS_SEARCH_LOCAL
2007 * @see #DEFAULT_KEYS_SEARCH_GLOBAL
2010 public final void setDefaultKeyMode(int mode) {
2011 mDefaultKeyMode = mode;
2013 // Some modes use a SpannableStringBuilder to track & dispatch input events
2014 // This list must remain in sync with the switch in onKeyDown()
2016 case DEFAULT_KEYS_DISABLE:
2017 case DEFAULT_KEYS_SHORTCUT:
2018 mDefaultKeySsb = null; // not used in these modes
2020 case DEFAULT_KEYS_DIALER:
2021 case DEFAULT_KEYS_SEARCH_LOCAL:
2022 case DEFAULT_KEYS_SEARCH_GLOBAL:
2023 mDefaultKeySsb = new SpannableStringBuilder();
2024 Selection.setSelection(mDefaultKeySsb,0);
2027 throw new IllegalArgumentException();
2032 * Called when a key was pressed down and not handled by any of the views
2033 * inside of the activity. So, for example, key presses while the cursor
2034 * is inside a TextView will not trigger the event (unless it is a navigation
2035 * to another object) because TextView handles its own key presses.
2037 * <p>If the focused view didn't want this event, this method is called.
2039 * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK}
2040 * by calling {@link #onBackPressed()}, though the behavior varies based
2041 * on the application compatibility mode: for
2042 * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications,
2043 * it will set up the dispatch to call {@link #onKeyUp} where the action
2044 * will be performed; for earlier applications, it will perform the
2045 * action immediately in on-down, as those versions of the platform
2048 * <p>Other additional default key handling may be performed
2049 * if configured with {@link #setDefaultKeyMode}.
2051 * @return Return <code>true</code> to prevent this event from being propagated
2052 * further, or <code>false</code> to indicate that you have not handled
2053 * this event and it should continue to be propagated.
2055 * @see android.view.KeyEvent
2057 public boolean onKeyDown(int keyCode, KeyEvent event) {
2058 if (keyCode == KeyEvent.KEYCODE_BACK) {
2059 if (getApplicationInfo().targetSdkVersion
2060 >= Build.VERSION_CODES.ECLAIR) {
2061 event.startTracking();
2068 if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) {
2070 } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) {
2071 if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL,
2072 keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) {
2077 // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_*
2078 boolean clearSpannable = false;
2080 if ((event.getRepeatCount() != 0) || event.isSystem()) {
2081 clearSpannable = true;
2084 handled = TextKeyListener.getInstance().onKeyDown(
2085 null, mDefaultKeySsb, keyCode, event);
2086 if (handled && mDefaultKeySsb.length() > 0) {
2087 // something useable has been typed - dispatch it now.
2089 final String str = mDefaultKeySsb.toString();
2090 clearSpannable = true;
2092 switch (mDefaultKeyMode) {
2093 case DEFAULT_KEYS_DIALER:
2094 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str));
2095 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
2096 startActivity(intent);
2098 case DEFAULT_KEYS_SEARCH_LOCAL:
2099 startSearch(str, false, null, false);
2101 case DEFAULT_KEYS_SEARCH_GLOBAL:
2102 startSearch(str, false, null, true);
2107 if (clearSpannable) {
2108 mDefaultKeySsb.clear();
2109 mDefaultKeySsb.clearSpans();
2110 Selection.setSelection(mDefaultKeySsb,0);
2117 * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent)
2118 * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle
2121 public boolean onKeyLongPress(int keyCode, KeyEvent event) {
2126 * Called when a key was released and not handled by any of the views
2127 * inside of the activity. So, for example, key presses while the cursor
2128 * is inside a TextView will not trigger the event (unless it is a navigation
2129 * to another object) because TextView handles its own key presses.
2131 * <p>The default implementation handles KEYCODE_BACK to stop the activity
2134 * @return Return <code>true</code> to prevent this event from being propagated
2135 * further, or <code>false</code> to indicate that you have not handled
2136 * this event and it should continue to be propagated.
2140 public boolean onKeyUp(int keyCode, KeyEvent event) {
2141 if (getApplicationInfo().targetSdkVersion
2142 >= Build.VERSION_CODES.ECLAIR) {
2143 if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking()
2144 && !event.isCanceled()) {
2153 * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent)
2154 * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle
2157 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
2162 * Called when the activity has detected the user's press of the back
2163 * key. The default implementation simply finishes the current activity,
2164 * but you can override this to do whatever you want.
2166 public void onBackPressed() {
2167 if (!mFragments.popBackStackImmediate()) {
2173 * Called when a key shortcut event is not handled by any of the views in the Activity.
2174 * Override this method to implement global key shortcuts for the Activity.
2175 * Key shortcuts can also be implemented by setting the
2176 * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items.
2178 * @param keyCode The value in event.getKeyCode().
2179 * @param event Description of the key event.
2180 * @return True if the key shortcut was handled.
2182 public boolean onKeyShortcut(int keyCode, KeyEvent event) {
2187 * Called when a touch screen event was not handled by any of the views
2188 * under it. This is most useful to process touch events that happen
2189 * outside of your window bounds, where there is no view to receive it.
2191 * @param event The touch screen event being processed.
2193 * @return Return true if you have consumed the event, false if you haven't.
2194 * The default implementation always returns false.
2196 public boolean onTouchEvent(MotionEvent event) {
2197 if (mWindow.shouldCloseOnTouch(this, event)) {
2206 * Called when the trackball was moved and not handled by any of the
2207 * views inside of the activity. So, for example, if the trackball moves
2208 * while focus is on a button, you will receive a call here because
2209 * buttons do not normally do anything with trackball events. The call
2210 * here happens <em>before</em> trackball movements are converted to
2211 * DPAD key events, which then get sent back to the view hierarchy, and
2212 * will be processed at the point for things like focus navigation.
2214 * @param event The trackball event being processed.
2216 * @return Return true if you have consumed the event, false if you haven't.
2217 * The default implementation always returns false.
2219 public boolean onTrackballEvent(MotionEvent event) {
2224 * Called when a generic motion event was not handled by any of the
2225 * views inside of the activity.
2227 * Generic motion events describe joystick movements, mouse hovers, track pad
2228 * touches, scroll wheel movements and other input events. The
2229 * {@link MotionEvent#getSource() source} of the motion event specifies
2230 * the class of input that was received. Implementations of this method
2231 * must examine the bits in the source before processing the event.
2232 * The following code example shows how this is done.
2234 * Generic motion events with source class
2235 * {@link android.view.InputDevice#SOURCE_CLASS_POINTER}
2236 * are delivered to the view under the pointer. All other generic motion events are
2237 * delivered to the focused view.
2239 * See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to
2240 * handle this event.
2243 * @param event The generic motion event being processed.
2245 * @return Return true if you have consumed the event, false if you haven't.
2246 * The default implementation always returns false.
2248 public boolean onGenericMotionEvent(MotionEvent event) {
2253 * Called whenever a key, touch, or trackball event is dispatched to the
2254 * activity. Implement this method if you wish to know that the user has
2255 * interacted with the device in some way while your activity is running.
2256 * This callback and {@link #onUserLeaveHint} are intended to help
2257 * activities manage status bar notifications intelligently; specifically,
2258 * for helping activities determine the proper time to cancel a notfication.
2260 * <p>All calls to your activity's {@link #onUserLeaveHint} callback will
2261 * be accompanied by calls to {@link #onUserInteraction}. This
2262 * ensures that your activity will be told of relevant user activity such
2263 * as pulling down the notification pane and touching an item there.
2265 * <p>Note that this callback will be invoked for the touch down action
2266 * that begins a touch gesture, but may not be invoked for the touch-moved
2267 * and touch-up actions that follow.
2269 * @see #onUserLeaveHint()
2271 public void onUserInteraction() {
2274 public void onWindowAttributesChanged(WindowManager.LayoutParams params) {
2275 // Update window manager if: we have a view, that view is
2276 // attached to its parent (which will be a RootView), and
2277 // this activity is not embedded.
2278 if (mParent == null) {
2279 View decor = mDecor;
2280 if (decor != null && decor.getParent() != null) {
2281 getWindowManager().updateViewLayout(decor, params);
2286 public void onContentChanged() {
2290 * Called when the current {@link Window} of the activity gains or loses
2291 * focus. This is the best indicator of whether this activity is visible
2292 * to the user. The default implementation clears the key tracking
2293 * state, so should always be called.
2295 * <p>Note that this provides information about global focus state, which
2296 * is managed independently of activity lifecycles. As such, while focus
2297 * changes will generally have some relation to lifecycle changes (an
2298 * activity that is stopped will not generally get window focus), you
2299 * should not rely on any particular order between the callbacks here and
2300 * those in the other lifecycle methods such as {@link #onResume}.
2302 * <p>As a general rule, however, a resumed activity will have window
2303 * focus... unless it has displayed other dialogs or popups that take
2304 * input focus, in which case the activity itself will not have focus
2305 * when the other windows have it. Likewise, the system may display
2306 * system-level windows (such as the status bar notification panel or
2307 * a system alert) which will temporarily take window input focus without
2308 * pausing the foreground activity.
2310 * @param hasFocus Whether the window of this activity has focus.
2312 * @see #hasWindowFocus()
2314 * @see View#onWindowFocusChanged(boolean)
2316 public void onWindowFocusChanged(boolean hasFocus) {
2320 * Called when the main window associated with the activity has been
2321 * attached to the window manager.
2322 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()}
2323 * for more information.
2324 * @see View#onAttachedToWindow
2326 public void onAttachedToWindow() {
2330 * Called when the main window associated with the activity has been
2331 * detached from the window manager.
2332 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()}
2333 * for more information.
2334 * @see View#onDetachedFromWindow
2336 public void onDetachedFromWindow() {
2340 * Returns true if this activity's <em>main</em> window currently has window focus.
2341 * Note that this is not the same as the view itself having focus.
2343 * @return True if this activity's main window currently has window focus.
2345 * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams)
2347 public boolean hasWindowFocus() {
2348 Window w = getWindow();
2350 View d = w.getDecorView();
2352 return d.hasWindowFocus();
2359 * Called to process key events. You can override this to intercept all
2360 * key events before they are dispatched to the window. Be sure to call
2361 * this implementation for key events that should be handled normally.
2363 * @param event The key event.
2365 * @return boolean Return true if this event was consumed.
2367 public boolean dispatchKeyEvent(KeyEvent event) {
2368 onUserInteraction();
2369 Window win = getWindow();
2370 if (win.superDispatchKeyEvent(event)) {
2373 View decor = mDecor;
2374 if (decor == null) decor = win.getDecorView();
2375 return event.dispatch(this, decor != null
2376 ? decor.getKeyDispatcherState() : null, this);
2380 * Called to process a key shortcut event.
2381 * You can override this to intercept all key shortcut events before they are
2382 * dispatched to the window. Be sure to call this implementation for key shortcut
2383 * events that should be handled normally.
2385 * @param event The key shortcut event.
2386 * @return True if this event was consumed.
2388 public boolean dispatchKeyShortcutEvent(KeyEvent event) {
2389 onUserInteraction();
2390 if (getWindow().superDispatchKeyShortcutEvent(event)) {
2393 return onKeyShortcut(event.getKeyCode(), event);
2397 * Called to process touch screen events. You can override this to
2398 * intercept all touch screen events before they are dispatched to the
2399 * window. Be sure to call this implementation for touch screen events
2400 * that should be handled normally.
2402 * @param ev The touch screen event.
2404 * @return boolean Return true if this event was consumed.
2406 public boolean dispatchTouchEvent(MotionEvent ev) {
2407 if (ev.getAction() == MotionEvent.ACTION_DOWN) {
2408 onUserInteraction();
2410 if (getWindow().superDispatchTouchEvent(ev)) {
2413 return onTouchEvent(ev);
2417 * Called to process trackball events. You can override this to
2418 * intercept all trackball events before they are dispatched to the
2419 * window. Be sure to call this implementation for trackball events
2420 * that should be handled normally.
2422 * @param ev The trackball event.
2424 * @return boolean Return true if this event was consumed.
2426 public boolean dispatchTrackballEvent(MotionEvent ev) {
2427 onUserInteraction();
2428 if (getWindow().superDispatchTrackballEvent(ev)) {
2431 return onTrackballEvent(ev);
2435 * Called to process generic motion events. You can override this to
2436 * intercept all generic motion events before they are dispatched to the
2437 * window. Be sure to call this implementation for generic motion events
2438 * that should be handled normally.
2440 * @param ev The generic motion event.
2442 * @return boolean Return true if this event was consumed.
2444 public boolean dispatchGenericMotionEvent(MotionEvent ev) {
2445 onUserInteraction();
2446 if (getWindow().superDispatchGenericMotionEvent(ev)) {
2449 return onGenericMotionEvent(ev);
2452 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
2453 event.setClassName(getClass().getName());
2454 event.setPackageName(getPackageName());
2456 LayoutParams params = getWindow().getAttributes();
2457 boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) &&
2458 (params.height == LayoutParams.MATCH_PARENT);
2459 event.setFullScreen(isFullScreen);
2461 CharSequence title = getTitle();
2462 if (!TextUtils.isEmpty(title)) {
2463 event.getText().add(title);
2470 * Default implementation of
2471 * {@link android.view.Window.Callback#onCreatePanelView}
2472 * for activities. This
2473 * simply returns null so that all panel sub-windows will have the default
2476 public View onCreatePanelView(int featureId) {
2481 * Default implementation of
2482 * {@link android.view.Window.Callback#onCreatePanelMenu}
2483 * for activities. This calls through to the new
2484 * {@link #onCreateOptionsMenu} method for the
2485 * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel,
2486 * so that subclasses of Activity don't need to deal with feature codes.
2488 public boolean onCreatePanelMenu(int featureId, Menu menu) {
2489 if (featureId == Window.FEATURE_OPTIONS_PANEL) {
2490 boolean show = onCreateOptionsMenu(menu);
2491 show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater());
2498 * Default implementation of
2499 * {@link android.view.Window.Callback#onPreparePanel}
2500 * for activities. This
2501 * calls through to the new {@link #onPrepareOptionsMenu} method for the
2502 * {@link android.view.Window#FEATURE_OPTIONS_PANEL}
2503 * panel, so that subclasses of
2504 * Activity don't need to deal with feature codes.
2506 public boolean onPreparePanel(int featureId, View view, Menu menu) {
2507 if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) {
2508 boolean goforit = onPrepareOptionsMenu(menu);
2509 goforit |= mFragments.dispatchPrepareOptionsMenu(menu);
2518 * @return The default implementation returns true.
2520 public boolean onMenuOpened(int featureId, Menu menu) {
2521 if (featureId == Window.FEATURE_ACTION_BAR) {
2523 if (mActionBar != null) {
2524 mActionBar.dispatchMenuVisibilityChanged(true);
2526 Log.e(TAG, "Tried to open action bar menu with no action bar");
2533 * Default implementation of
2534 * {@link android.view.Window.Callback#onMenuItemSelected}
2535 * for activities. This calls through to the new
2536 * {@link #onOptionsItemSelected} method for the
2537 * {@link android.view.Window#FEATURE_OPTIONS_PANEL}
2538 * panel, so that subclasses of
2539 * Activity don't need to deal with feature codes.
2541 public boolean onMenuItemSelected(int featureId, MenuItem item) {
2542 switch (featureId) {
2543 case Window.FEATURE_OPTIONS_PANEL:
2544 // Put event logging here so it gets called even if subclass
2545 // doesn't call through to superclass's implmeentation of each
2546 // of these methods below
2547 EventLog.writeEvent(50000, 0, item.getTitleCondensed());
2548 if (onOptionsItemSelected(item)) {
2551 if (mFragments.dispatchOptionsItemSelected(item)) {
2554 if (item.getItemId() == android.R.id.home && mActionBar != null &&
2555 (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) {
2556 if (mParent == null) {
2557 return onNavigateUp();
2559 return mParent.onNavigateUpFromChild(this);
2564 case Window.FEATURE_CONTEXT_MENU:
2565 EventLog.writeEvent(50000, 1, item.getTitleCondensed());
2566 if (onContextItemSelected(item)) {
2569 return mFragments.dispatchContextItemSelected(item);
2577 * Default implementation of
2578 * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for
2579 * activities. This calls through to {@link #onOptionsMenuClosed(Menu)}
2580 * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel,
2581 * so that subclasses of Activity don't need to deal with feature codes.
2582 * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the
2583 * {@link #onContextMenuClosed(Menu)} will be called.
2585 public void onPanelClosed(int featureId, Menu menu) {
2586 switch (featureId) {
2587 case Window.FEATURE_OPTIONS_PANEL:
2588 mFragments.dispatchOptionsMenuClosed(menu);
2589 onOptionsMenuClosed(menu);
2592 case Window.FEATURE_CONTEXT_MENU:
2593 onContextMenuClosed(menu);
2596 case Window.FEATURE_ACTION_BAR:
2598 mActionBar.dispatchMenuVisibilityChanged(false);
2604 * Declare that the options menu has changed, so should be recreated.
2605 * The {@link #onCreateOptionsMenu(Menu)} method will be called the next
2606 * time it needs to be displayed.
2608 public void invalidateOptionsMenu() {
2609 mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL);
2613 * Initialize the contents of the Activity's standard options menu. You
2614 * should place your menu items in to <var>menu</var>.
2616 * <p>This is only called once, the first time the options menu is
2617 * displayed. To update the menu every time it is displayed, see
2618 * {@link #onPrepareOptionsMenu}.
2620 * <p>The default implementation populates the menu with standard system
2621 * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that
2622 * they will be correctly ordered with application-defined menu items.
2623 * Deriving classes should always call through to the base implementation.
2625 * <p>You can safely hold on to <var>menu</var> (and any items created
2626 * from it), making modifications to it as desired, until the next
2627 * time onCreateOptionsMenu() is called.
2629 * <p>When you add items to the menu, you can implement the Activity's
2630 * {@link #onOptionsItemSelected} method to handle them there.
2632 * @param menu The options menu in which you place your items.
2634 * @return You must return true for the menu to be displayed;
2635 * if you return false it will not be shown.
2637 * @see #onPrepareOptionsMenu
2638 * @see #onOptionsItemSelected
2640 public boolean onCreateOptionsMenu(Menu menu) {
2641 if (mParent != null) {
2642 return mParent.onCreateOptionsMenu(menu);
2648 * Prepare the Screen's standard options menu to be displayed. This is
2649 * called right before the menu is shown, every time it is shown. You can
2650 * use this method to efficiently enable/disable items or otherwise
2651 * dynamically modify the contents.
2653 * <p>The default implementation updates the system menu items based on the
2654 * activity's state. Deriving classes should always call through to the
2655 * base class implementation.
2657 * @param menu The options menu as last shown or first initialized by
2658 * onCreateOptionsMenu().
2660 * @return You must return true for the menu to be displayed;
2661 * if you return false it will not be shown.
2663 * @see #onCreateOptionsMenu
2665 public boolean onPrepareOptionsMenu(Menu menu) {
2666 if (mParent != null) {
2667 return mParent.onPrepareOptionsMenu(menu);
2673 * This hook is called whenever an item in your options menu is selected.
2674 * The default implementation simply returns false to have the normal
2675 * processing happen (calling the item's Runnable or sending a message to
2676 * its Handler as appropriate). You can use this method for any items
2677 * for which you would like to do processing without those other
2680 * <p>Derived classes should call through to the base class for it to
2681 * perform the default menu handling.</p>
2683 * @param item The menu item that was selected.
2685 * @return boolean Return false to allow normal menu processing to
2686 * proceed, true to consume it here.
2688 * @see #onCreateOptionsMenu
2690 public boolean onOptionsItemSelected(MenuItem item) {
2691 if (mParent != null) {
2692 return mParent.onOptionsItemSelected(item);
2698 * This method is called whenever the user chooses to navigate Up within your application's
2699 * activity hierarchy from the action bar.
2701 * <p>If the attribute {@link android.R.attr#parentActivityName parentActivityName}
2702 * was specified in the manifest for this activity or an activity-alias to it,
2703 * default Up navigation will be handled automatically. If any activity
2704 * along the parent chain requires extra Intent arguments, the Activity subclass
2705 * should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}
2706 * to supply those arguments.</p>
2708 * <p>See <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a>
2709 * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a>
2710 * from the design guide for more information about navigating within your app.</p>
2712 * <p>See the {@link TaskStackBuilder} class and the Activity methods
2713 * {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and
2714 * {@link #navigateUpTo(Intent)} for help implementing custom Up navigation.
2715 * The AppNavigation sample application in the Android SDK is also available for reference.</p>
2717 * @return true if Up navigation completed successfully and this Activity was finished,
2720 public boolean onNavigateUp() {
2721 // Automatically handle hierarchical Up navigation if the proper
2722 // metadata is available.
2723 Intent upIntent = getParentActivityIntent();
2724 if (upIntent != null) {
2725 if (mActivityInfo.taskAffinity == null) {
2726 // Activities with a null affinity are special; they really shouldn't
2727 // specify a parent activity intent in the first place. Just finish
2728 // the current activity and call it a day.
2730 } else if (shouldUpRecreateTask(upIntent)) {
2731 TaskStackBuilder b = TaskStackBuilder.create(this);
2732 onCreateNavigateUpTaskStack(b);
2733 onPrepareNavigateUpTaskStack(b);
2734 b.startActivities();
2736 // We can't finishAffinity if we have a result.
2737 // Fall back and simply finish the current activity instead.
2738 if (mResultCode != RESULT_CANCELED || mResultData != null) {
2739 // Tell the developer what's going on to avoid hair-pulling.
2740 Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result");
2746 navigateUpTo(upIntent);
2754 * This is called when a child activity of this one attempts to navigate up.
2755 * The default implementation simply calls onNavigateUp() on this activity (the parent).
2757 * @param child The activity making the call.
2759 public boolean onNavigateUpFromChild(Activity child) {
2760 return onNavigateUp();
2764 * Define the synthetic task stack that will be generated during Up navigation from
2767 * <p>The default implementation of this method adds the parent chain of this activity
2768 * as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications
2769 * may choose to override this method to construct the desired task stack in a different
2772 * <p>This method will be invoked by the default implementation of {@link #onNavigateUp()}
2773 * if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent
2774 * returned by {@link #getParentActivityIntent()}.</p>
2776 * <p>Applications that wish to supply extra Intent parameters to the parent stack defined
2777 * by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.</p>
2779 * @param builder An empty TaskStackBuilder - the application should add intents representing
2780 * the desired task stack
2782 public void onCreateNavigateUpTaskStack(TaskStackBuilder builder) {
2783 builder.addParentStack(this);
2787 * Prepare the synthetic task stack that will be generated during Up navigation
2788 * from a different task.
2790 * <p>This method receives the {@link TaskStackBuilder} with the constructed series of
2791 * Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}.
2792 * If any extra data should be added to these intents before launching the new task,
2793 * the application should override this method and add that data here.</p>
2795 * @param builder A TaskStackBuilder that has been populated with Intents by
2796 * onCreateNavigateUpTaskStack.
2798 public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder) {
2802 * This hook is called whenever the options menu is being closed (either by the user canceling
2803 * the menu with the back/menu button, or when an item is selected).
2805 * @param menu The options menu as last shown or first initialized by
2806 * onCreateOptionsMenu().
2808 public void onOptionsMenuClosed(Menu menu) {
2809 if (mParent != null) {
2810 mParent.onOptionsMenuClosed(menu);
2815 * Programmatically opens the options menu. If the options menu is already
2816 * open, this method does nothing.
2818 public void openOptionsMenu() {
2819 mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null);
2823 * Progammatically closes the options menu. If the options menu is already
2824 * closed, this method does nothing.
2826 public void closeOptionsMenu() {
2827 mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL);
2831 * Called when a context menu for the {@code view} is about to be shown.
2832 * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every
2833 * time the context menu is about to be shown and should be populated for
2834 * the view (or item inside the view for {@link AdapterView} subclasses,
2835 * this can be found in the {@code menuInfo})).
2837 * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an
2838 * item has been selected.
2840 * It is not safe to hold onto the context menu after this method returns.
2843 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
2847 * Registers a context menu to be shown for the given view (multiple views
2848 * can show the context menu). This method will set the
2849 * {@link OnCreateContextMenuListener} on the view to this activity, so
2850 * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be
2851 * called when it is time to show the context menu.
2853 * @see #unregisterForContextMenu(View)
2854 * @param view The view that should show a context menu.
2856 public void registerForContextMenu(View view) {
2857 view.setOnCreateContextMenuListener(this);
2861 * Prevents a context menu to be shown for the given view. This method will remove the
2862 * {@link OnCreateContextMenuListener} on the view.
2864 * @see #registerForContextMenu(View)
2865 * @param view The view that should stop showing a context menu.
2867 public void unregisterForContextMenu(View view) {
2868 view.setOnCreateContextMenuListener(null);
2872 * Programmatically opens the context menu for a particular {@code view}.
2873 * The {@code view} should have been added via
2874 * {@link #registerForContextMenu(View)}.
2876 * @param view The view to show the context menu for.
2878 public void openContextMenu(View view) {
2879 view.showContextMenu();
2883 * Programmatically closes the most recently opened context menu, if showing.
2885 public void closeContextMenu() {
2886 mWindow.closePanel(Window.FEATURE_CONTEXT_MENU);
2890 * This hook is called whenever an item in a context menu is selected. The
2891 * default implementation simply returns false to have the normal processing
2892 * happen (calling the item's Runnable or sending a message to its Handler
2893 * as appropriate). You can use this method for any items for which you
2894 * would like to do processing without those other facilities.
2896 * Use {@link MenuItem#getMenuInfo()} to get extra information set by the
2897 * View that added this menu item.
2899 * Derived classes should call through to the base class for it to perform
2900 * the default menu handling.
2902 * @param item The context menu item that was selected.
2903 * @return boolean Return false to allow normal context menu processing to
2904 * proceed, true to consume it here.
2906 public boolean onContextItemSelected(MenuItem item) {
2907 if (mParent != null) {
2908 return mParent.onContextItemSelected(item);
2914 * This hook is called whenever the context menu is being closed (either by
2915 * the user canceling the menu with the back/menu button, or when an item is
2918 * @param menu The context menu that is being closed.
2920 public void onContextMenuClosed(Menu menu) {
2921 if (mParent != null) {
2922 mParent.onContextMenuClosed(menu);
2927 * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}.
2930 protected Dialog onCreateDialog(int id) {
2935 * Callback for creating dialogs that are managed (saved and restored) for you
2936 * by the activity. The default implementation calls through to
2937 * {@link #onCreateDialog(int)} for compatibility.
2939 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
2940 * or later, consider instead using a {@link DialogFragment} instead.</em>
2942 * <p>If you use {@link #showDialog(int)}, the activity will call through to
2943 * this method the first time, and hang onto it thereafter. Any dialog
2944 * that is created by this method will automatically be saved and restored
2945 * for you, including whether it is showing.
2947 * <p>If you would like the activity to manage saving and restoring dialogs
2948 * for you, you should override this method and handle any ids that are
2949 * passed to {@link #showDialog}.
2951 * <p>If you would like an opportunity to prepare your dialog before it is shown,
2952 * override {@link #onPrepareDialog(int, Dialog, Bundle)}.
2954 * @param id The id of the dialog.
2955 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
2956 * @return The dialog. If you return null, the dialog will not be created.
2958 * @see #onPrepareDialog(int, Dialog, Bundle)
2959 * @see #showDialog(int, Bundle)
2960 * @see #dismissDialog(int)
2961 * @see #removeDialog(int)
2963 * @deprecated Use the new {@link DialogFragment} class with
2964 * {@link FragmentManager} instead; this is also
2965 * available on older platforms through the Android compatibility package.
2968 protected Dialog onCreateDialog(int id, Bundle args) {
2969 return onCreateDialog(id);
2973 * @deprecated Old no-arguments version of
2974 * {@link #onPrepareDialog(int, Dialog, Bundle)}.
2977 protected void onPrepareDialog(int id, Dialog dialog) {
2978 dialog.setOwnerActivity(this);
2982 * Provides an opportunity to prepare a managed dialog before it is being
2983 * shown. The default implementation calls through to
2984 * {@link #onPrepareDialog(int, Dialog)} for compatibility.
2987 * Override this if you need to update a managed dialog based on the state
2988 * of the application each time it is shown. For example, a time picker
2989 * dialog might want to be updated with the current time. You should call
2990 * through to the superclass's implementation. The default implementation
2991 * will set this Activity as the owner activity on the Dialog.
2993 * @param id The id of the managed dialog.
2994 * @param dialog The dialog.
2995 * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
2996 * @see #onCreateDialog(int, Bundle)
2997 * @see #showDialog(int)
2998 * @see #dismissDialog(int)
2999 * @see #removeDialog(int)
3001 * @deprecated Use the new {@link DialogFragment} class with
3002 * {@link FragmentManager} instead; this is also
3003 * available on older platforms through the Android compatibility package.
3006 protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
3007 onPrepareDialog(id, dialog);
3011 * Simple version of {@link #showDialog(int, Bundle)} that does not
3012 * take any arguments. Simply calls {@link #showDialog(int, Bundle)}
3013 * with null arguments.
3015 * @deprecated Use the new {@link DialogFragment} class with
3016 * {@link FragmentManager} instead; this is also
3017 * available on older platforms through the Android compatibility package.
3020 public final void showDialog(int id) {
3021 showDialog(id, null);
3025 * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)}
3026 * will be made with the same id the first time this is called for a given
3027 * id. From thereafter, the dialog will be automatically saved and restored.
3029 * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
3030 * or later, consider instead using a {@link DialogFragment} instead.</em>
3032 * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will
3033 * be made to provide an opportunity to do any timely preparation.
3035 * @param id The id of the managed dialog.
3036 * @param args Arguments to pass through to the dialog. These will be saved
3037 * and restored for you. Note that if the dialog is already created,
3038 * {@link #onCreateDialog(int, Bundle)} will not be called with the new
3039 * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be.
3040 * If you need to rebuild the dialog, call {@link #removeDialog(int)} first.
3041 * @return Returns true if the Dialog was created; false is returned if
3042 * it is not created because {@link #onCreateDialog(int, Bundle)} returns false.
3045 * @see #onCreateDialog(int, Bundle)
3046 * @see #onPrepareDialog(int, Dialog, Bundle)
3047 * @see #dismissDialog(int)
3048 * @see #removeDialog(int)
3050 * @deprecated Use the new {@link DialogFragment} class with
3051 * {@link FragmentManager} instead; this is also
3052 * available on older platforms through the Android compatibility package.
3055 public final boolean showDialog(int id, Bundle args) {
3056 if (mManagedDialogs == null) {
3057 mManagedDialogs = new SparseArray<ManagedDialog>();
3059 ManagedDialog md = mManagedDialogs.get(id);
3061 md = new ManagedDialog();
3062 md.mDialog = createDialog(id, null, args);
3063 if (md.mDialog == null) {
3066 mManagedDialogs.put(id, md);
3070 onPrepareDialog(id, md.mDialog, args);
3076 * Dismiss a dialog that was previously shown via {@link #showDialog(int)}.
3078 * @param id The id of the managed dialog.
3080 * @throws IllegalArgumentException if the id was not previously shown via
3081 * {@link #showDialog(int)}.
3083 * @see #onCreateDialog(int, Bundle)
3084 * @see #onPrepareDialog(int, Dialog, Bundle)
3085 * @see #showDialog(int)
3086 * @see #removeDialog(int)
3088 * @deprecated Use the new {@link DialogFragment} class with
3089 * {@link FragmentManager} instead; this is also
3090 * available on older platforms through the Android compatibility package.
3093 public final void dismissDialog(int id) {
3094 if (mManagedDialogs == null) {
3095 throw missingDialog(id);
3098 final ManagedDialog md = mManagedDialogs.get(id);
3100 throw missingDialog(id);
3102 md.mDialog.dismiss();
3106 * Creates an exception to throw if a user passed in a dialog id that is
3109 private IllegalArgumentException missingDialog(int id) {
3110 return new IllegalArgumentException("no dialog with id " + id + " was ever "
3111 + "shown via Activity#showDialog");
3115 * Removes any internal references to a dialog managed by this Activity.
3116 * If the dialog is showing, it will dismiss it as part of the clean up.
3118 * <p>This can be useful if you know that you will never show a dialog again and
3119 * want to avoid the overhead of saving and restoring it in the future.
3121 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function
3122 * will not throw an exception if you try to remove an ID that does not
3123 * currently have an associated dialog.</p>
3125 * @param id The id of the managed dialog.
3127 * @see #onCreateDialog(int, Bundle)
3128 * @see #onPrepareDialog(int, Dialog, Bundle)
3129 * @see #showDialog(int)
3130 * @see #dismissDialog(int)
3132 * @deprecated Use the new {@link DialogFragment} class with
3133 * {@link FragmentManager} instead; this is also
3134 * available on older platforms through the Android compatibility package.
3137 public final void removeDialog(int id) {
3138 if (mManagedDialogs != null) {
3139 final ManagedDialog md = mManagedDialogs.get(id);
3141 md.mDialog.dismiss();
3142 mManagedDialogs.remove(id);
3148 * This hook is called when the user signals the desire to start a search.
3150 * <p>You can use this function as a simple way to launch the search UI, in response to a
3151 * menu item, search button, or other widgets within your activity. Unless overidden,
3152 * calling this function is the same as calling
3153 * {@link #startSearch startSearch(null, false, null, false)}, which launches
3154 * search for the current activity as specified in its manifest, see {@link SearchManager}.
3156 * <p>You can override this function to force global search, e.g. in response to a dedicated
3157 * search key, or to block search entirely (by simply returning false).
3159 * @return Returns {@code true} if search launched, and {@code false} if activity blocks it.
3160 * The default implementation always returns {@code true}.
3162 * @see android.app.SearchManager
3164 public boolean onSearchRequested() {
3165 startSearch(null, false, null, false);
3170 * This hook is called to launch the search UI.
3172 * <p>It is typically called from onSearchRequested(), either directly from
3173 * Activity.onSearchRequested() or from an overridden version in any given
3174 * Activity. If your goal is simply to activate search, it is preferred to call
3175 * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal
3176 * is to inject specific data such as context data, it is preferred to <i>override</i>
3177 * onSearchRequested(), so that any callers to it will benefit from the override.
3179 * @param initialQuery Any non-null non-empty string will be inserted as
3180 * pre-entered text in the search query box.
3181 * @param selectInitialQuery If true, the intial query will be preselected, which means that
3182 * any further typing will replace it. This is useful for cases where an entire pre-formed
3183 * query is being inserted. If false, the selection point will be placed at the end of the
3184 * inserted query. This is useful when the inserted query is text that the user entered,
3185 * and the user would expect to be able to keep typing. <i>This parameter is only meaningful
3186 * if initialQuery is a non-empty string.</i>
3187 * @param appSearchData An application can insert application-specific
3188 * context here, in order to improve quality or specificity of its own
3189 * searches. This data will be returned with SEARCH intent(s). Null if
3190 * no extra data is required.
3191 * @param globalSearch If false, this will only launch the search that has been specifically
3192 * defined by the application (which is usually defined as a local search). If no default
3193 * search is defined in the current application or activity, global search will be launched.
3194 * If true, this will always launch a platform-global (e.g. web-based) search instead.
3196 * @see android.app.SearchManager
3197 * @see #onSearchRequested
3199 public void startSearch(String initialQuery, boolean selectInitialQuery,
3200 Bundle appSearchData, boolean globalSearch) {
3201 ensureSearchManager();
3202 mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
3203 appSearchData, globalSearch);
3207 * Similar to {@link #startSearch}, but actually fires off the search query after invoking
3208 * the search dialog. Made available for testing purposes.
3210 * @param query The query to trigger. If empty, the request will be ignored.
3211 * @param appSearchData An application can insert application-specific
3212 * context here, in order to improve quality or specificity of its own
3213 * searches. This data will be returned with SEARCH intent(s). Null if
3214 * no extra data is required.
3216 public void triggerSearch(String query, Bundle appSearchData) {
3217 ensureSearchManager();
3218 mSearchManager.triggerSearch(query, getComponentName(), appSearchData);
3222 * Request that key events come to this activity. Use this if your
3223 * activity has no views with focus, but the activity still wants
3224 * a chance to process key events.
3226 * @see android.view.Window#takeKeyEvents
3228 public void takeKeyEvents(boolean get) {
3229 getWindow().takeKeyEvents(get);
3233 * Enable extended window features. This is a convenience for calling
3234 * {@link android.view.Window#requestFeature getWindow().requestFeature()}.
3236 * @param featureId The desired feature as defined in
3237 * {@link android.view.Window}.
3238 * @return Returns true if the requested feature is supported and now
3241 * @see android.view.Window#requestFeature
3243 public final boolean requestWindowFeature(int featureId) {
3244 return getWindow().requestFeature(featureId);
3248 * Convenience for calling
3249 * {@link android.view.Window#setFeatureDrawableResource}.
3251 public final void setFeatureDrawableResource(int featureId, int resId) {
3252 getWindow().setFeatureDrawableResource(featureId, resId);
3256 * Convenience for calling
3257 * {@link android.view.Window#setFeatureDrawableUri}.
3259 public final void setFeatureDrawableUri(int featureId, Uri uri) {
3260 getWindow().setFeatureDrawableUri(featureId, uri);
3264 * Convenience for calling
3265 * {@link android.view.Window#setFeatureDrawable(int, Drawable)}.
3267 public final void setFeatureDrawable(int featureId, Drawable drawable) {
3268 getWindow().setFeatureDrawable(featureId, drawable);
3272 * Convenience for calling
3273 * {@link android.view.Window#setFeatureDrawableAlpha}.
3275 public final void setFeatureDrawableAlpha(int featureId, int alpha) {
3276 getWindow().setFeatureDrawableAlpha(featureId, alpha);
3280 * Convenience for calling
3281 * {@link android.view.Window#getLayoutInflater}.
3283 public LayoutInflater getLayoutInflater() {
3284 return getWindow().getLayoutInflater();
3288 * Returns a {@link MenuInflater} with this context.
3290 public MenuInflater getMenuInflater() {
3291 // Make sure that action views can get an appropriate theme.
3292 if (mMenuInflater == null) {
3294 if (mActionBar != null) {
3295 mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this);
3297 mMenuInflater = new MenuInflater(this);
3300 return mMenuInflater;
3304 protected void onApplyThemeResource(Resources.Theme theme, int resid,
3306 if (mParent == null) {
3307 super.onApplyThemeResource(theme, resid, first);
3310 theme.setTo(mParent.getTheme());
3311 } catch (Exception e) {
3314 theme.applyStyle(resid, false);
3319 * Same as calling {@link #startActivityForResult(Intent, int, Bundle)}
3322 * @param intent The intent to start.
3323 * @param requestCode If >= 0, this code will be returned in
3324 * onActivityResult() when the activity exits.
3326 * @throws android.content.ActivityNotFoundException
3328 * @see #startActivity
3330 public void startActivityForResult(Intent intent, int requestCode) {
3331 startActivityForResult(intent, requestCode, null);
3335 * Launch an activity for which you would like a result when it finished.
3336 * When this activity exits, your
3337 * onActivityResult() method will be called with the given requestCode.
3338 * Using a negative requestCode is the same as calling
3339 * {@link #startActivity} (the activity is not launched as a sub-activity).
3341 * <p>Note that this method should only be used with Intent protocols
3342 * that are defined to return a result. In other protocols (such as
3343 * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may
3344 * not get the result when you expect. For example, if the activity you
3345 * are launching uses the singleTask launch mode, it will not run in your
3346 * task and thus you will immediately receive a cancel result.
3348 * <p>As a special case, if you call startActivityForResult() with a requestCode
3349 * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your
3350 * activity, then your window will not be displayed until a result is
3351 * returned back from the started activity. This is to avoid visible
3352 * flickering when redirecting to another activity.
3354 * <p>This method throws {@link android.content.ActivityNotFoundException}
3355 * if there was no Activity found to run the given Intent.
3357 * @param intent The intent to start.
3358 * @param requestCode If >= 0, this code will be returned in
3359 * onActivityResult() when the activity exits.
3360 * @param options Additional options for how the Activity should be started.
3361 * See {@link android.content.Context#startActivity(Intent, Bundle)
3362 * Context.startActivity(Intent, Bundle)} for more details.
3364 * @throws android.content.ActivityNotFoundException
3366 * @see #startActivity
3368 public void startActivityForResult(Intent intent, int requestCode, Bundle options) {
3369 if (mParent == null) {
3370 Instrumentation.ActivityResult ar =
3371 mInstrumentation.execStartActivity(
3372 this, mMainThread.getApplicationThread(), mToken, this,
3373 intent, requestCode, options);
3375 mMainThread.sendActivityResult(
3376 mToken, mEmbeddedID, requestCode, ar.getResultCode(),
3377 ar.getResultData());
3379 if (requestCode >= 0) {
3380 // If this start is requesting a result, we can avoid making
3381 // the activity visible until the result is received. Setting
3382 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
3383 // activity hidden during this time, to avoid flickering.
3384 // This can only be done when a result is requested because
3385 // that guarantees we will get information back when the
3386 // activity is finished, no matter what happens to it.
3387 mStartedActivity = true;
3390 if (options != null) {
3391 mParent.startActivityFromChild(this, intent, requestCode, options);
3393 // Note we want to go through this method for compatibility with
3394 // existing applications that may have overridden it.
3395 mParent.startActivityFromChild(this, intent, requestCode);
3401 * @hide Implement to provide correct calling token.
3403 public void startActivityAsUser(Intent intent, UserHandle user) {
3404 startActivityAsUser(intent, null, user);
3408 * @hide Implement to provide correct calling token.
3410 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) {
3411 if (mParent != null) {
3412 throw new RuntimeException("Called be called from a child");
3414 Instrumentation.ActivityResult ar =
3415 mInstrumentation.execStartActivity(
3416 this, mMainThread.getApplicationThread(), mToken, this,
3417 intent, -1, options, user);
3419 mMainThread.sendActivityResult(
3420 mToken, mEmbeddedID, -1, ar.getResultCode(),
3421 ar.getResultData());
3426 * Same as calling {@link #startIntentSenderForResult(IntentSender, int,
3427 * Intent, int, int, int, Bundle)} with no options.
3429 * @param intent The IntentSender to launch.
3430 * @param requestCode If >= 0, this code will be returned in
3431 * onActivityResult() when the activity exits.
3432 * @param fillInIntent If non-null, this will be provided as the
3433 * intent parameter to {@link IntentSender#sendIntent}.
3434 * @param flagsMask Intent flags in the original IntentSender that you
3435 * would like to change.
3436 * @param flagsValues Desired values for any bits set in
3437 * <var>flagsMask</var>
3438 * @param extraFlags Always set to 0.
3440 public void startIntentSenderForResult(IntentSender intent, int requestCode,
3441 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
3442 throws IntentSender.SendIntentException {
3443 startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask,
3444 flagsValues, extraFlags, null);
3448 * Like {@link #startActivityForResult(Intent, int)}, but allowing you
3449 * to use a IntentSender to describe the activity to be started. If
3450 * the IntentSender is for an activity, that activity will be started
3451 * as if you had called the regular {@link #startActivityForResult(Intent, int)}
3452 * here; otherwise, its associated action will be executed (such as
3453 * sending a broadcast) as if you had called
3454 * {@link IntentSender#sendIntent IntentSender.sendIntent} on it.
3456 * @param intent The IntentSender to launch.
3457 * @param requestCode If >= 0, this code will be returned in
3458 * onActivityResult() when the activity exits.
3459 * @param fillInIntent If non-null, this will be provided as the
3460 * intent parameter to {@link IntentSender#sendIntent}.
3461 * @param flagsMask Intent flags in the original IntentSender that you
3462 * would like to change.
3463 * @param flagsValues Desired values for any bits set in
3464 * <var>flagsMask</var>
3465 * @param extraFlags Always set to 0.
3466 * @param options Additional options for how the Activity should be started.
3467 * See {@link android.content.Context#startActivity(Intent, Bundle)
3468 * Context.startActivity(Intent, Bundle)} for more details. If options
3469 * have also been supplied by the IntentSender, options given here will
3470 * override any that conflict with those given by the IntentSender.
3472 public void startIntentSenderForResult(IntentSender intent, int requestCode,
3473 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags,
3474 Bundle options) throws IntentSender.SendIntentException {
3475 if (mParent == null) {
3476 startIntentSenderForResultInner(intent, requestCode, fillInIntent,
3477 flagsMask, flagsValues, this, options);
3478 } else if (options != null) {
3479 mParent.startIntentSenderFromChild(this, intent, requestCode,
3480 fillInIntent, flagsMask, flagsValues, extraFlags, options);
3482 // Note we want to go through this call for compatibility with
3483 // existing applications that may have overridden the method.
3484 mParent.startIntentSenderFromChild(this, intent, requestCode,
3485 fillInIntent, flagsMask, flagsValues, extraFlags);
3489 private void startIntentSenderForResultInner(IntentSender intent, int requestCode,
3490 Intent fillInIntent, int flagsMask, int flagsValues, Activity activity,
3492 throws IntentSender.SendIntentException {
3494 String resolvedType = null;
3495 if (fillInIntent != null) {
3496 fillInIntent.setAllowFds(false);
3497 resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver());
3499 int result = ActivityManagerNative.getDefault()
3500 .startActivityIntentSender(mMainThread.getApplicationThread(), intent,
3501 fillInIntent, resolvedType, mToken, activity.mEmbeddedID,
3502 requestCode, flagsMask, flagsValues, options);
3503 if (result == ActivityManager.START_CANCELED) {
3504 throw new IntentSender.SendIntentException();
3506 Instrumentation.checkStartActivityResult(result, null);
3507 } catch (RemoteException e) {
3509 if (requestCode >= 0) {
3510 // If this start is requesting a result, we can avoid making
3511 // the activity visible until the result is received. Setting
3512 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
3513 // activity hidden during this time, to avoid flickering.
3514 // This can only be done when a result is requested because
3515 // that guarantees we will get information back when the
3516 // activity is finished, no matter what happens to it.
3517 mStartedActivity = true;
3522 * Same as {@link #startActivity(Intent, Bundle)} with no options
3525 * @param intent The intent to start.
3527 * @throws android.content.ActivityNotFoundException
3529 * @see {@link #startActivity(Intent, Bundle)}
3530 * @see #startActivityForResult
3533 public void startActivity(Intent intent) {
3534 startActivity(intent, null);
3538 * Launch a new activity. You will not receive any information about when
3539 * the activity exits. This implementation overrides the base version,
3540 * providing information about
3541 * the activity performing the launch. Because of this additional
3542 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not
3543 * required; if not specified, the new activity will be added to the
3544 * task of the caller.
3546 * <p>This method throws {@link android.content.ActivityNotFoundException}
3547 * if there was no Activity found to run the given Intent.
3549 * @param intent The intent to start.
3550 * @param options Additional options for how the Activity should be started.
3551 * See {@link android.content.Context#startActivity(Intent, Bundle)
3552 * Context.startActivity(Intent, Bundle)} for more details.
3554 * @throws android.content.ActivityNotFoundException
3556 * @see {@link #startActivity(Intent)}
3557 * @see #startActivityForResult
3560 public void startActivity(Intent intent, Bundle options) {
3561 if (options != null) {
3562 startActivityForResult(intent, -1, options);
3564 // Note we want to go through this call for compatibility with
3565 // applications that may have overridden the method.
3566 startActivityForResult(intent, -1);
3571 * Same as {@link #startActivities(Intent[], Bundle)} with no options
3574 * @param intents The intents to start.
3576 * @throws android.content.ActivityNotFoundException
3578 * @see {@link #startActivities(Intent[], Bundle)}
3579 * @see #startActivityForResult
3582 public void startActivities(Intent[] intents) {
3583 startActivities(intents, null);
3587 * Launch a new activity. You will not receive any information about when
3588 * the activity exits. This implementation overrides the base version,
3589 * providing information about
3590 * the activity performing the launch. Because of this additional
3591 * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not
3592 * required; if not specified, the new activity will be added to the
3593 * task of the caller.
3595 * <p>This method throws {@link android.content.ActivityNotFoundException}
3596 * if there was no Activity found to run the given Intent.
3598 * @param intents The intents to start.
3599 * @param options Additional options for how the Activity should be started.
3600 * See {@link android.content.Context#startActivity(Intent, Bundle)
3601 * Context.startActivity(Intent, Bundle)} for more details.
3603 * @throws android.content.ActivityNotFoundException
3605 * @see {@link #startActivities(Intent[])}
3606 * @see #startActivityForResult
3609 public void startActivities(Intent[] intents, Bundle options) {
3610 mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(),
3611 mToken, this, intents, options);
3615 * Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)}
3618 * @param intent The IntentSender to launch.
3619 * @param fillInIntent If non-null, this will be provided as the
3620 * intent parameter to {@link IntentSender#sendIntent}.
3621 * @param flagsMask Intent flags in the original IntentSender that you
3622 * would like to change.
3623 * @param flagsValues Desired values for any bits set in
3624 * <var>flagsMask</var>
3625 * @param extraFlags Always set to 0.
3627 public void startIntentSender(IntentSender intent,
3628 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
3629 throws IntentSender.SendIntentException {
3630 startIntentSender(intent, fillInIntent, flagsMask, flagsValues,
3635 * Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender
3637 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)}
3638 * for more information.
3640 * @param intent The IntentSender to launch.
3641 * @param fillInIntent If non-null, this will be provided as the
3642 * intent parameter to {@link IntentSender#sendIntent}.
3643 * @param flagsMask Intent flags in the original IntentSender that you
3644 * would like to change.
3645 * @param flagsValues Desired values for any bits set in
3646 * <var>flagsMask</var>
3647 * @param extraFlags Always set to 0.
3648 * @param options Additional options for how the Activity should be started.
3649 * See {@link android.content.Context#startActivity(Intent, Bundle)
3650 * Context.startActivity(Intent, Bundle)} for more details. If options
3651 * have also been supplied by the IntentSender, options given here will
3652 * override any that conflict with those given by the IntentSender.
3654 public void startIntentSender(IntentSender intent,
3655 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags,
3656 Bundle options) throws IntentSender.SendIntentException {
3657 if (options != null) {
3658 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask,
3659 flagsValues, extraFlags, options);
3661 // Note we want to go through this call for compatibility with
3662 // applications that may have overridden the method.
3663 startIntentSenderForResult(intent, -1, fillInIntent, flagsMask,
3664 flagsValues, extraFlags);
3669 * Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)}
3672 * @param intent The intent to start.
3673 * @param requestCode If >= 0, this code will be returned in
3674 * onActivityResult() when the activity exits, as described in
3675 * {@link #startActivityForResult}.
3677 * @return If a new activity was launched then true is returned; otherwise
3678 * false is returned and you must handle the Intent yourself.
3680 * @see #startActivity
3681 * @see #startActivityForResult
3683 public boolean startActivityIfNeeded(Intent intent, int requestCode) {
3684 return startActivityIfNeeded(intent, requestCode, null);
3688 * A special variation to launch an activity only if a new activity
3689 * instance is needed to handle the given Intent. In other words, this is
3690 * just like {@link #startActivityForResult(Intent, int)} except: if you are
3691 * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or
3692 * singleTask or singleTop
3693 * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode},
3695 * that handles <var>intent</var> is the same as your currently running
3696 * activity, then a new instance is not needed. In this case, instead of
3697 * the normal behavior of calling {@link #onNewIntent} this function will
3698 * return and you can handle the Intent yourself.
3700 * <p>This function can only be called from a top-level activity; if it is
3701 * called from a child activity, a runtime exception will be thrown.
3703 * @param intent The intent to start.
3704 * @param requestCode If >= 0, this code will be returned in
3705 * onActivityResult() when the activity exits, as described in
3706 * {@link #startActivityForResult}.
3707 * @param options Additional options for how the Activity should be started.
3708 * See {@link android.content.Context#startActivity(Intent, Bundle)
3709 * Context.startActivity(Intent, Bundle)} for more details.
3711 * @return If a new activity was launched then true is returned; otherwise
3712 * false is returned and you must handle the Intent yourself.
3714 * @see #startActivity
3715 * @see #startActivityForResult
3717 public boolean startActivityIfNeeded(Intent intent, int requestCode, Bundle options) {
3718 if (mParent == null) {
3719 int result = ActivityManager.START_RETURN_INTENT_TO_CALLER;
3721 intent.setAllowFds(false);
3722 result = ActivityManagerNative.getDefault()
3723 .startActivity(mMainThread.getApplicationThread(),
3724 intent, intent.resolveTypeIfNeeded(getContentResolver()),
3725 mToken, mEmbeddedID, requestCode,
3726 ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, null,
3728 } catch (RemoteException e) {
3732 Instrumentation.checkStartActivityResult(result, intent);
3734 if (requestCode >= 0) {
3735 // If this start is requesting a result, we can avoid making
3736 // the activity visible until the result is received. Setting
3737 // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
3738 // activity hidden during this time, to avoid flickering.
3739 // This can only be done when a result is requested because
3740 // that guarantees we will get information back when the
3741 // activity is finished, no matter what happens to it.
3742 mStartedActivity = true;
3744 return result != ActivityManager.START_RETURN_INTENT_TO_CALLER;
3747 throw new UnsupportedOperationException(
3748 "startActivityIfNeeded can only be called from a top-level activity");
3752 * Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with
3755 * @param intent The intent to dispatch to the next activity. For
3756 * correct behavior, this must be the same as the Intent that started
3757 * your own activity; the only changes you can make are to the extras
3760 * @return Returns a boolean indicating whether there was another Activity
3761 * to start: true if there was a next activity to start, false if there
3762 * wasn't. In general, if true is returned you will then want to call
3763 * finish() on yourself.
3765 public boolean startNextMatchingActivity(Intent intent) {
3766 return startNextMatchingActivity(intent, null);
3770 * Special version of starting an activity, for use when you are replacing
3771 * other activity components. You can use this to hand the Intent off
3772 * to the next Activity that can handle it. You typically call this in
3773 * {@link #onCreate} with the Intent returned by {@link #getIntent}.
3775 * @param intent The intent to dispatch to the next activity. For
3776 * correct behavior, this must be the same as the Intent that started
3777 * your own activity; the only changes you can make are to the extras
3779 * @param options Additional options for how the Activity should be started.
3780 * See {@link android.content.Context#startActivity(Intent, Bundle)
3781 * Context.startActivity(Intent, Bundle)} for more details.
3783 * @return Returns a boolean indicating whether there was another Activity
3784 * to start: true if there was a next activity to start, false if there
3785 * wasn't. In general, if true is returned you will then want to call
3786 * finish() on yourself.
3788 public boolean startNextMatchingActivity(Intent intent, Bundle options) {
3789 if (mParent == null) {
3791 intent.setAllowFds(false);
3792 return ActivityManagerNative.getDefault()
3793 .startNextMatchingActivity(mToken, intent, options);
3794 } catch (RemoteException e) {
3800 throw new UnsupportedOperationException(
3801 "startNextMatchingActivity can only be called from a top-level activity");
3805 * Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)}
3808 * @param child The activity making the call.
3809 * @param intent The intent to start.
3810 * @param requestCode Reply request code. < 0 if reply is not requested.
3812 * @throws android.content.ActivityNotFoundException
3814 * @see #startActivity
3815 * @see #startActivityForResult
3817 public void startActivityFromChild(Activity child, Intent intent,
3819 startActivityFromChild(child, intent, requestCode, null);
3823 * This is called when a child activity of this one calls its
3824 * {@link #startActivity} or {@link #startActivityForResult} method.
3826 * <p>This method throws {@link android.content.ActivityNotFoundException}
3827 * if there was no Activity found to run the given Intent.
3829 * @param child The activity making the call.
3830 * @param intent The intent to start.
3831 * @param requestCode Reply request code. < 0 if reply is not requested.
3832 * @param options Additional options for how the Activity should be started.
3833 * See {@link android.content.Context#startActivity(Intent, Bundle)
3834 * Context.startActivity(Intent, Bundle)} for more details.
3836 * @throws android.content.ActivityNotFoundException
3838 * @see #startActivity
3839 * @see #startActivityForResult
3841 public void startActivityFromChild(Activity child, Intent intent,
3842 int requestCode, Bundle options) {
3843 Instrumentation.ActivityResult ar =
3844 mInstrumentation.execStartActivity(
3845 this, mMainThread.getApplicationThread(), mToken, child,
3846 intent, requestCode, options);
3848 mMainThread.sendActivityResult(
3849 mToken, child.mEmbeddedID, requestCode,
3850 ar.getResultCode(), ar.getResultData());
3855 * Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)}
3858 * @param fragment The fragment making the call.
3859 * @param intent The intent to start.
3860 * @param requestCode Reply request code. < 0 if reply is not requested.
3862 * @throws android.content.ActivityNotFoundException
3864 * @see Fragment#startActivity
3865 * @see Fragment#startActivityForResult
3867 public void startActivityFromFragment(Fragment fragment, Intent intent,
3869 startActivityFromFragment(fragment, intent, requestCode, null);
3873 * This is called when a Fragment in this activity calls its
3874 * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult}
3877 * <p>This method throws {@link android.content.ActivityNotFoundException}
3878 * if there was no Activity found to run the given Intent.
3880 * @param fragment The fragment making the call.
3881 * @param intent The intent to start.
3882 * @param requestCode Reply request code. < 0 if reply is not requested.
3883 * @param options Additional options for how the Activity should be started.
3884 * See {@link android.content.Context#startActivity(Intent, Bundle)
3885 * Context.startActivity(Intent, Bundle)} for more details.
3887 * @throws android.content.ActivityNotFoundException
3889 * @see Fragment#startActivity
3890 * @see Fragment#startActivityForResult
3892 public void startActivityFromFragment(Fragment fragment, Intent intent,
3893 int requestCode, Bundle options) {
3894 Instrumentation.ActivityResult ar =
3895 mInstrumentation.execStartActivity(
3896 this, mMainThread.getApplicationThread(), mToken, fragment,
3897 intent, requestCode, options);
3899 mMainThread.sendActivityResult(
3900 mToken, fragment.mWho, requestCode,
3901 ar.getResultCode(), ar.getResultData());
3906 * Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender,
3907 * int, Intent, int, int, int, Bundle)} with no options.
3909 public void startIntentSenderFromChild(Activity child, IntentSender intent,
3910 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues,
3912 throws IntentSender.SendIntentException {
3913 startIntentSenderFromChild(child, intent, requestCode, fillInIntent,
3914 flagsMask, flagsValues, extraFlags, null);
3918 * Like {@link #startActivityFromChild(Activity, Intent, int)}, but
3919 * taking a IntentSender; see
3920 * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)}
3921 * for more information.
3923 public void startIntentSenderFromChild(Activity child, IntentSender intent,
3924 int requestCode, Intent fillInIntent, int flagsMask, int flagsValues,
3925 int extraFlags, Bundle options)
3926 throws IntentSender.SendIntentException {
3927 startIntentSenderForResultInner(intent, requestCode, fillInIntent,
3928 flagsMask, flagsValues, child, options);
3932 * Call immediately after one of the flavors of {@link #startActivity(Intent)}
3933 * or {@link #finish} to specify an explicit transition animation to
3936 * <p>As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative
3937 * to using this with starting activities is to supply the desired animation
3938 * information through a {@link ActivityOptions} bundle to
3939 * {@link #startActivity(Intent, Bundle) or a related function. This allows
3940 * you to specify a custom animation even when starting an activity from
3941 * outside the context of the current top activity.
3943 * @param enterAnim A resource ID of the animation resource to use for
3944 * the incoming activity. Use 0 for no animation.
3945 * @param exitAnim A resource ID of the animation resource to use for
3946 * the outgoing activity. Use 0 for no animation.
3948 public void overridePendingTransition(int enterAnim, int exitAnim) {
3950 ActivityManagerNative.getDefault().overridePendingTransition(
3951 mToken, getPackageName(), enterAnim, exitAnim);
3952 } catch (RemoteException e) {
3957 * Call this to set the result that your activity will return to its
3960 * @param resultCode The result code to propagate back to the originating
3961 * activity, often RESULT_CANCELED or RESULT_OK
3963 * @see #RESULT_CANCELED
3965 * @see #RESULT_FIRST_USER
3966 * @see #setResult(int, Intent)
3968 public final void setResult(int resultCode) {
3969 synchronized (this) {
3970 mResultCode = resultCode;
3976 * Call this to set the result that your activity will return to its
3979 * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent
3980 * you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION
3981 * Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION
3982 * Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the
3983 * Activity receiving the result access to the specific URIs in the Intent.
3984 * Access will remain until the Activity has finished (it will remain across the hosting
3985 * process being killed and other temporary destruction) and will be added
3986 * to any existing set of URI permissions it already holds.
3988 * @param resultCode The result code to propagate back to the originating
3989 * activity, often RESULT_CANCELED or RESULT_OK
3990 * @param data The data to propagate back to the originating activity.
3992 * @see #RESULT_CANCELED
3994 * @see #RESULT_FIRST_USER
3995 * @see #setResult(int)
3997 public final void setResult(int resultCode, Intent data) {
3998 synchronized (this) {
3999 mResultCode = resultCode;
4005 * Return the name of the package that invoked this activity. This is who
4006 * the data in {@link #setResult setResult()} will be sent to. You can
4007 * use this information to validate that the recipient is allowed to
4010 * <p>Note: if the calling activity is not expecting a result (that is it
4011 * did not use the {@link #startActivityForResult}
4012 * form that includes a request code), then the calling package will be
4015 * @return The package of the activity that will receive your
4016 * reply, or null if none.
4018 public String getCallingPackage() {
4020 return ActivityManagerNative.getDefault().getCallingPackage(mToken);
4021 } catch (RemoteException e) {
4027 * Return the name of the activity that invoked this activity. This is
4028 * who the data in {@link #setResult setResult()} will be sent to. You
4029 * can use this information to validate that the recipient is allowed to
4032 * <p>Note: if the calling activity is not expecting a result (that is it
4033 * did not use the {@link #startActivityForResult}
4034 * form that includes a request code), then the calling package will be
4037 * @return String The full name of the activity that will receive your
4038 * reply, or null if none.
4040 public ComponentName getCallingActivity() {
4042 return ActivityManagerNative.getDefault().getCallingActivity(mToken);
4043 } catch (RemoteException e) {
4049 * Control whether this activity's main window is visible. This is intended
4050 * only for the special case of an activity that is not going to show a
4051 * UI itself, but can't just finish prior to onResume() because it needs
4052 * to wait for a service binding or such. Setting this to false allows
4053 * you to prevent your UI from being shown during that time.
4055 * <p>The default value for this is taken from the
4056 * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme.
4058 public void setVisible(boolean visible) {
4059 if (mVisibleFromClient != visible) {
4060 mVisibleFromClient = visible;
4061 if (mVisibleFromServer) {
4062 if (visible) makeVisible();
4063 else mDecor.setVisibility(View.INVISIBLE);
4068 void makeVisible() {
4069 if (!mWindowAdded) {
4070 ViewManager wm = getWindowManager();
4071 wm.addView(mDecor, getWindow().getAttributes());
4072 mWindowAdded = true;
4074 mDecor.setVisibility(View.VISIBLE);
4078 * Check to see whether this activity is in the process of finishing,
4079 * either because you called {@link #finish} on it or someone else
4080 * has requested that it finished. This is often used in
4081 * {@link #onPause} to determine whether the activity is simply pausing or
4082 * completely finishing.
4084 * @return If the activity is finishing, returns true; else returns false.
4088 public boolean isFinishing() {
4093 * Returns true if the final {@link #onDestroy()} call has been made
4094 * on the Activity, so this instance is now dead.
4096 public boolean isDestroyed() {
4101 * Check to see whether this activity is in the process of being destroyed in order to be
4102 * recreated with a new configuration. This is often used in
4103 * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed
4104 * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}.
4106 * @return If the activity is being torn down in order to be recreated with a new configuration,
4107 * returns true; else returns false.
4109 public boolean isChangingConfigurations() {
4110 return mChangingConfigurations;
4114 * Cause this Activity to be recreated with a new instance. This results
4115 * in essentially the same flow as when the Activity is created due to
4116 * a configuration change -- the current instance will go through its
4117 * lifecycle to {@link #onDestroy} and a new instance then created after it.
4119 public void recreate() {
4120 if (mParent != null) {
4121 throw new IllegalStateException("Can only be called on top-level activity");
4123 if (Looper.myLooper() != mMainThread.getLooper()) {
4124 throw new IllegalStateException("Must be called from main thread");
4126 mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false);
4130 * Call this when your activity is done and should be closed. The
4131 * ActivityResult is propagated back to whoever launched you via
4132 * onActivityResult().
4134 public void finish() {
4135 if (mParent == null) {
4138 synchronized (this) {
4139 resultCode = mResultCode;
4140 resultData = mResultData;
4142 if (false) Log.v(TAG, "Finishing self: token=" + mToken);
4144 if (resultData != null) {
4145 resultData.setAllowFds(false);
4147 if (ActivityManagerNative.getDefault()
4148 .finishActivity(mToken, resultCode, resultData)) {
4151 } catch (RemoteException e) {
4155 mParent.finishFromChild(this);
4160 * Finish this activity as well as all activities immediately below it
4161 * in the current task that have the same affinity. This is typically
4162 * used when an application can be launched on to another task (such as
4163 * from an ACTION_VIEW of a content type it understands) and the user
4164 * has used the up navigation to switch out of the current task and in
4165 * to its own task. In this case, if the user has navigated down into
4166 * any other activities of the second application, all of those should
4167 * be removed from the original task as part of the task switch.
4169 * <p>Note that this finish does <em>not</em> allow you to deliver results
4170 * to the previous activity, and an exception will be thrown if you are trying
4173 public void finishAffinity() {
4174 if (mParent != null) {
4175 throw new IllegalStateException("Can not be called from an embedded activity");
4177 if (mResultCode != RESULT_CANCELED || mResultData != null) {
4178 throw new IllegalStateException("Can not be called to deliver a result");
4181 if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) {
4184 } catch (RemoteException e) {
4190 * This is called when a child activity of this one calls its
4191 * {@link #finish} method. The default implementation simply calls
4192 * finish() on this activity (the parent), finishing the entire group.
4194 * @param child The activity making the call.
4198 public void finishFromChild(Activity child) {
4203 * Force finish another activity that you had previously started with
4204 * {@link #startActivityForResult}.
4206 * @param requestCode The request code of the activity that you had
4207 * given to startActivityForResult(). If there are multiple
4208 * activities started with this request code, they
4209 * will all be finished.
4211 public void finishActivity(int requestCode) {
4212 if (mParent == null) {
4214 ActivityManagerNative.getDefault()
4215 .finishSubActivity(mToken, mEmbeddedID, requestCode);
4216 } catch (RemoteException e) {
4220 mParent.finishActivityFromChild(this, requestCode);
4225 * This is called when a child activity of this one calls its
4228 * @param child The activity making the call.
4229 * @param requestCode Request code that had been used to start the
4232 public void finishActivityFromChild(Activity child, int requestCode) {
4234 ActivityManagerNative.getDefault()
4235 .finishSubActivity(mToken, child.mEmbeddedID, requestCode);
4236 } catch (RemoteException e) {
4242 * Called when an activity you launched exits, giving you the requestCode
4243 * you started it with, the resultCode it returned, and any additional
4244 * data from it. The <var>resultCode</var> will be
4245 * {@link #RESULT_CANCELED} if the activity explicitly returned that,
4246 * didn't return any result, or crashed during its operation.
4248 * <p>You will receive this call immediately before onResume() when your
4249 * activity is re-starting.
4251 * @param requestCode The integer request code originally supplied to
4252 * startActivityForResult(), allowing you to identify who this
4254 * @param resultCode The integer result code returned by the child activity
4255 * through its setResult().
4256 * @param data An Intent, which can return result data to the caller
4257 * (various data can be attached to Intent "extras").
4259 * @see #startActivityForResult
4260 * @see #createPendingResult
4261 * @see #setResult(int)
4263 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
4267 * Create a new PendingIntent object which you can hand to others
4268 * for them to use to send result data back to your
4269 * {@link #onActivityResult} callback. The created object will be either
4270 * one-shot (becoming invalid after a result is sent back) or multiple
4271 * (allowing any number of results to be sent through it).
4273 * @param requestCode Private request code for the sender that will be
4274 * associated with the result data when it is returned. The sender can not
4275 * modify this value, allowing you to identify incoming results.
4276 * @param data Default data to supply in the result, which may be modified
4278 * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT},
4279 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE},
4280 * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT},
4281 * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT},
4282 * or any of the flags as supported by
4283 * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts
4284 * of the intent that can be supplied when the actual send happens.
4286 * @return Returns an existing or new PendingIntent matching the given
4287 * parameters. May return null only if
4288 * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been
4291 * @see PendingIntent
4293 public PendingIntent createPendingResult(int requestCode, Intent data,
4295 String packageName = getPackageName();
4297 data.setAllowFds(false);
4298 IIntentSender target =
4299 ActivityManagerNative.getDefault().getIntentSender(
4300 ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName,
4301 mParent == null ? mToken : mParent.mToken,
4302 mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null,
4303 UserHandle.myUserId());
4304 return target != null ? new PendingIntent(target) : null;
4305 } catch (RemoteException e) {
4312 * Change the desired orientation of this activity. If the activity
4313 * is currently in the foreground or otherwise impacting the screen
4314 * orientation, the screen will immediately be changed (possibly causing
4315 * the activity to be restarted). Otherwise, this will be used the next
4316 * time the activity is visible.
4318 * @param requestedOrientation An orientation constant as used in
4319 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
4321 public void setRequestedOrientation(int requestedOrientation) {
4322 if (mParent == null) {
4324 ActivityManagerNative.getDefault().setRequestedOrientation(
4325 mToken, requestedOrientation);
4326 } catch (RemoteException e) {
4330 mParent.setRequestedOrientation(requestedOrientation);
4335 * Return the current requested orientation of the activity. This will
4336 * either be the orientation requested in its component's manifest, or
4337 * the last requested orientation given to
4338 * {@link #setRequestedOrientation(int)}.
4340 * @return Returns an orientation constant as used in
4341 * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
4343 public int getRequestedOrientation() {
4344 if (mParent == null) {
4346 return ActivityManagerNative.getDefault()
4347 .getRequestedOrientation(mToken);
4348 } catch (RemoteException e) {
4352 return mParent.getRequestedOrientation();
4354 return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
4358 * Return the identifier of the task this activity is in. This identifier
4359 * will remain the same for the lifetime of the activity.
4361 * @return Task identifier, an opaque integer.
4363 public int getTaskId() {
4365 return ActivityManagerNative.getDefault()
4366 .getTaskForActivity(mToken, false);
4367 } catch (RemoteException e) {
4373 * Return whether this activity is the root of a task. The root is the
4374 * first activity in a task.
4376 * @return True if this is the root activity, else false.
4378 public boolean isTaskRoot() {
4380 return ActivityManagerNative.getDefault()
4381 .getTaskForActivity(mToken, true) >= 0;
4382 } catch (RemoteException e) {
4388 * Move the task containing this activity to the back of the activity
4389 * stack. The activity's order within the task is unchanged.
4391 * @param nonRoot If false then this only works if the activity is the root
4392 * of a task; if true it will work for any activity in
4395 * @return If the task was moved (or it was already at the
4396 * back) true is returned, else false.
4398 public boolean moveTaskToBack(boolean nonRoot) {
4400 return ActivityManagerNative.getDefault().moveActivityTaskToBack(
4402 } catch (RemoteException e) {
4409 * Returns class name for this activity with the package prefix removed.
4410 * This is the default name used to read and write settings.
4412 * @return The local class name.
4414 public String getLocalClassName() {
4415 final String pkg = getPackageName();
4416 final String cls = mComponent.getClassName();
4417 int packageLen = pkg.length();
4418 if (!cls.startsWith(pkg) || cls.length() <= packageLen
4419 || cls.charAt(packageLen) != '.') {
4422 return cls.substring(packageLen+1);
4426 * Returns complete component name of this activity.
4428 * @return Returns the complete component name for this activity
4430 public ComponentName getComponentName()
4436 * Retrieve a {@link SharedPreferences} object for accessing preferences
4437 * that are private to this activity. This simply calls the underlying
4438 * {@link #getSharedPreferences(String, int)} method by passing in this activity's
4439 * class name as the preferences name.
4441 * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default
4442 * operation, {@link #MODE_WORLD_READABLE} and
4443 * {@link #MODE_WORLD_WRITEABLE} to control permissions.
4445 * @return Returns the single SharedPreferences instance that can be used
4446 * to retrieve and modify the preference values.
4448 public SharedPreferences getPreferences(int mode) {
4449 return getSharedPreferences(getLocalClassName(), mode);
4452 private void ensureSearchManager() {
4453 if (mSearchManager != null) {
4457 mSearchManager = new SearchManager(this, null);
4461 public Object getSystemService(String name) {
4462 if (getBaseContext() == null) {
4463 throw new IllegalStateException(
4464 "System services not available to Activities before onCreate()");
4467 if (WINDOW_SERVICE.equals(name)) {
4468 return mWindowManager;
4469 } else if (SEARCH_SERVICE.equals(name)) {
4470 ensureSearchManager();
4471 return mSearchManager;
4473 return super.getSystemService(name);
4477 * Change the title associated with this activity. If this is a
4478 * top-level activity, the title for its window will change. If it
4479 * is an embedded activity, the parent can do whatever it wants
4482 public void setTitle(CharSequence title) {
4484 onTitleChanged(title, mTitleColor);
4486 if (mParent != null) {
4487 mParent.onChildTitleChanged(this, title);
4492 * Change the title associated with this activity. If this is a
4493 * top-level activity, the title for its window will change. If it
4494 * is an embedded activity, the parent can do whatever it wants
4497 public void setTitle(int titleId) {
4498 setTitle(getText(titleId));
4501 public void setTitleColor(int textColor) {
4502 mTitleColor = textColor;
4503 onTitleChanged(mTitle, textColor);
4506 public final CharSequence getTitle() {
4510 public final int getTitleColor() {
4514 protected void onTitleChanged(CharSequence title, int color) {
4516 final Window win = getWindow();
4518 win.setTitle(title);
4520 win.setTitleColor(color);
4526 protected void onChildTitleChanged(Activity childActivity, CharSequence title) {
4530 * Sets the visibility of the progress bar in the title.
4532 * In order for the progress bar to be shown, the feature must be requested
4533 * via {@link #requestWindowFeature(int)}.
4535 * @param visible Whether to show the progress bars in the title.
4537 public final void setProgressBarVisibility(boolean visible) {
4538 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON :
4539 Window.PROGRESS_VISIBILITY_OFF);
4543 * Sets the visibility of the indeterminate progress bar in the title.
4545 * In order for the progress bar to be shown, the feature must be requested
4546 * via {@link #requestWindowFeature(int)}.
4548 * @param visible Whether to show the progress bars in the title.
4550 public final void setProgressBarIndeterminateVisibility(boolean visible) {
4551 getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS,
4552 visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF);
4556 * Sets whether the horizontal progress bar in the title should be indeterminate (the circular
4557 * is always indeterminate).
4559 * In order for the progress bar to be shown, the feature must be requested
4560 * via {@link #requestWindowFeature(int)}.
4562 * @param indeterminate Whether the horizontal progress bar should be indeterminate.
4564 public final void setProgressBarIndeterminate(boolean indeterminate) {
4565 getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
4566 indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF);
4570 * Sets the progress for the progress bars in the title.
4572 * In order for the progress bar to be shown, the feature must be requested
4573 * via {@link #requestWindowFeature(int)}.
4575 * @param progress The progress for the progress bar. Valid ranges are from
4576 * 0 to 10000 (both inclusive). If 10000 is given, the progress
4577 * bar will be completely filled and will fade out.
4579 public final void setProgress(int progress) {
4580 getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START);
4584 * Sets the secondary progress for the progress bar in the title. This
4585 * progress is drawn between the primary progress (set via
4586 * {@link #setProgress(int)} and the background. It can be ideal for media
4587 * scenarios such as showing the buffering progress while the default
4588 * progress shows the play progress.
4590 * In order for the progress bar to be shown, the feature must be requested
4591 * via {@link #requestWindowFeature(int)}.
4593 * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from
4594 * 0 to 10000 (both inclusive).
4596 public final void setSecondaryProgress(int secondaryProgress) {
4597 getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
4598 secondaryProgress + Window.PROGRESS_SECONDARY_START);
4602 * Suggests an audio stream whose volume should be changed by the hardware
4605 * The suggested audio stream will be tied to the window of this Activity.
4606 * If the Activity is switched, the stream set here is no longer the
4607 * suggested stream. The client does not need to save and restore the old
4608 * suggested stream value in onPause and onResume.
4610 * @param streamType The type of the audio stream whose volume should be
4611 * changed by the hardware volume controls. It is not guaranteed that
4612 * the hardware volume controls will always change this stream's
4613 * volume (for example, if a call is in progress, its stream's volume
4614 * may be changed instead). To reset back to the default, use
4615 * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}.
4617 public final void setVolumeControlStream(int streamType) {
4618 getWindow().setVolumeControlStream(streamType);
4622 * Gets the suggested audio stream whose volume should be changed by the
4623 * harwdare volume controls.
4625 * @return The suggested audio stream type whose volume should be changed by
4626 * the hardware volume controls.
4627 * @see #setVolumeControlStream(int)
4629 public final int getVolumeControlStream() {
4630 return getWindow().getVolumeControlStream();
4634 * Runs the specified action on the UI thread. If the current thread is the UI
4635 * thread, then the action is executed immediately. If the current thread is
4636 * not the UI thread, the action is posted to the event queue of the UI thread.
4638 * @param action the action to run on the UI thread
4640 public final void runOnUiThread(Runnable action) {
4641 if (Thread.currentThread() != mUiThread) {
4642 mHandler.post(action);
4649 * Standard implementation of
4650 * {@link android.view.LayoutInflater.Factory#onCreateView} used when
4651 * inflating with the LayoutInflater returned by {@link #getSystemService}.
4652 * This implementation does nothing and is for
4653 * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps
4654 * should use {@link #onCreateView(View, String, Context, AttributeSet)}.
4656 * @see android.view.LayoutInflater#createView
4657 * @see android.view.Window#getLayoutInflater
4659 public View onCreateView(String name, Context context, AttributeSet attrs) {
4664 * Standard implementation of
4665 * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)}
4666 * used when inflating with the LayoutInflater returned by {@link #getSystemService}.
4667 * This implementation handles <fragment> tags to embed fragments inside
4670 * @see android.view.LayoutInflater#createView
4671 * @see android.view.Window#getLayoutInflater
4673 public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
4674 if (!"fragment".equals(name)) {
4675 return onCreateView(name, context, attrs);
4678 String fname = attrs.getAttributeValue(null, "class");
4680 context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment);
4681 if (fname == null) {
4682 fname = a.getString(com.android.internal.R.styleable.Fragment_name);
4684 int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID);
4685 String tag = a.getString(com.android.internal.R.styleable.Fragment_tag);
4688 int containerId = parent != null ? parent.getId() : 0;
4689 if (containerId == View.NO_ID && id == View.NO_ID && tag == null) {
4690 throw new IllegalArgumentException(attrs.getPositionDescription()
4691 + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname);
4694 // If we restored from a previous state, we may already have
4695 // instantiated this fragment from the state and should use
4696 // that instance instead of making a new one.
4697 Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null;
4698 if (fragment == null && tag != null) {
4699 fragment = mFragments.findFragmentByTag(tag);
4701 if (fragment == null && containerId != View.NO_ID) {
4702 fragment = mFragments.findFragmentById(containerId);
4705 if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x"
4706 + Integer.toHexString(id) + " fname=" + fname
4707 + " existing=" + fragment);
4708 if (fragment == null) {
4709 fragment = Fragment.instantiate(this, fname);
4710 fragment.mFromLayout = true;
4711 fragment.mFragmentId = id != 0 ? id : containerId;
4712 fragment.mContainerId = containerId;
4713 fragment.mTag = tag;
4714 fragment.mInLayout = true;
4715 fragment.mFragmentManager = mFragments;
4716 fragment.onInflate(this, attrs, fragment.mSavedFragmentState);
4717 mFragments.addFragment(fragment, true);
4719 } else if (fragment.mInLayout) {
4720 // A fragment already exists and it is not one we restored from
4722 throw new IllegalArgumentException(attrs.getPositionDescription()
4723 + ": Duplicate id 0x" + Integer.toHexString(id)
4724 + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId)
4725 + " with another fragment for " + fname);
4727 // This fragment was retained from a previous instance; get it
4729 fragment.mInLayout = true;
4730 // If this fragment is newly instantiated (either right now, or
4731 // from last saved state), then give it the attributes to
4732 // initialize itself.
4733 if (!fragment.mRetaining) {
4734 fragment.onInflate(this, attrs, fragment.mSavedFragmentState);
4736 mFragments.moveToState(fragment);
4739 if (fragment.mView == null) {
4740 throw new IllegalStateException("Fragment " + fname
4741 + " did not create a view.");
4744 fragment.mView.setId(id);
4746 if (fragment.mView.getTag() == null) {
4747 fragment.mView.setTag(tag);
4749 return fragment.mView;
4753 * Print the Activity's state into the given stream. This gets invoked if
4754 * you run "adb shell dumpsys activity <activity_component_name>".
4756 * @param prefix Desired prefix to prepend at each line of output.
4757 * @param fd The raw file descriptor that the dump is being sent to.
4758 * @param writer The PrintWriter to which you should dump your state. This will be
4759 * closed for you after you return.
4760 * @param args additional arguments to the dump request.
4762 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
4763 dumpInner(prefix, fd, writer, args);
4766 void dumpInner(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
4767 writer.print(prefix); writer.print("Local Activity ");
4768 writer.print(Integer.toHexString(System.identityHashCode(this)));
4769 writer.println(" State:");
4770 String innerPrefix = prefix + " ";
4771 writer.print(innerPrefix); writer.print("mResumed=");
4772 writer.print(mResumed); writer.print(" mStopped=");
4773 writer.print(mStopped); writer.print(" mFinished=");
4774 writer.println(mFinished);
4775 writer.print(innerPrefix); writer.print("mLoadersStarted=");
4776 writer.println(mLoadersStarted);
4777 writer.print(innerPrefix); writer.print("mChangingConfigurations=");
4778 writer.println(mChangingConfigurations);
4779 writer.print(innerPrefix); writer.print("mCurrentConfig=");
4780 writer.println(mCurrentConfig);
4781 if (mLoaderManager != null) {
4782 writer.print(prefix); writer.print("Loader Manager ");
4783 writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager)));
4784 writer.println(":");
4785 mLoaderManager.dump(prefix + " ", fd, writer, args);
4787 mFragments.dump(prefix, fd, writer, args);
4788 writer.print(prefix); writer.println("View Hierarchy:");
4789 dumpViewHierarchy(prefix + " ", writer, getWindow().getDecorView());
4792 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) {
4793 writer.print(prefix);
4795 writer.println("null");
4798 writer.println(view.toString());
4799 if (!(view instanceof ViewGroup)) {
4802 ViewGroup grp = (ViewGroup)view;
4803 final int N = grp.getChildCount();
4807 prefix = prefix + " ";
4808 for (int i=0; i<N; i++) {
4809 dumpViewHierarchy(prefix, writer, grp.getChildAt(i));
4814 * Bit indicating that this activity is "immersive" and should not be
4815 * interrupted by notifications if possible.
4817 * This value is initially set by the manifest property
4818 * <code>android:immersive</code> but may be changed at runtime by
4819 * {@link #setImmersive}.
4821 * @see #setImmersive(boolean)
4822 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE
4824 public boolean isImmersive() {
4826 return ActivityManagerNative.getDefault().isImmersive(mToken);
4827 } catch (RemoteException e) {
4833 * Adjust the current immersive mode setting.
4835 * Note that changing this value will have no effect on the activity's
4836 * {@link android.content.pm.ActivityInfo} structure; that is, if
4837 * <code>android:immersive</code> is set to <code>true</code>
4838 * in the application's manifest entry for this activity, the {@link
4839 * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will
4840 * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE
4841 * FLAG_IMMERSIVE} bit set.
4843 * @see #isImmersive()
4844 * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE
4846 public void setImmersive(boolean i) {
4848 ActivityManagerNative.getDefault().setImmersive(mToken, i);
4849 } catch (RemoteException e) {
4855 * Start an action mode.
4857 * @param callback Callback that will manage lifecycle events for this context mode
4858 * @return The ContextMode that was started, or null if it was canceled
4862 public ActionMode startActionMode(ActionMode.Callback callback) {
4863 return mWindow.getDecorView().startActionMode(callback);
4867 * Give the Activity a chance to control the UI for an action mode requested
4870 * <p>Note: If you are looking for a notification callback that an action mode
4871 * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p>
4873 * @param callback The callback that should control the new action mode
4874 * @return The new action mode, or <code>null</code> if the activity does not want to
4875 * provide special handling for this action mode. (It will be handled by the system.)
4877 public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) {
4879 if (mActionBar != null) {
4880 return mActionBar.startActionMode(callback);
4886 * Notifies the Activity that an action mode has been started.
4887 * Activity subclasses overriding this method should call the superclass implementation.
4889 * @param mode The new action mode.
4891 public void onActionModeStarted(ActionMode mode) {
4895 * Notifies the activity that an action mode has finished.
4896 * Activity subclasses overriding this method should call the superclass implementation.
4898 * @param mode The action mode that just finished.
4900 public void onActionModeFinished(ActionMode mode) {
4904 * Returns true if the app should recreate the task when navigating 'up' from this activity
4905 * by using targetIntent.
4907 * <p>If this method returns false the app can trivially call
4908 * {@link #navigateUpTo(Intent)} using the same parameters to correctly perform
4909 * up navigation. If this method returns false, the app should synthesize a new task stack
4910 * by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.</p>
4912 * @param targetIntent An intent representing the target destination for up navigation
4913 * @return true if navigating up should recreate a new task stack, false if the same task
4914 * should be used for the destination
4916 public boolean shouldUpRecreateTask(Intent targetIntent) {
4918 PackageManager pm = getPackageManager();
4919 ComponentName cn = targetIntent.getComponent();
4921 cn = targetIntent.resolveActivity(pm);
4923 ActivityInfo info = pm.getActivityInfo(cn, 0);
4924 if (info.taskAffinity == null) {
4927 return !ActivityManagerNative.getDefault()
4928 .targetTaskAffinityMatchesActivity(mToken, info.taskAffinity);
4929 } catch (RemoteException e) {
4931 } catch (NameNotFoundException e) {
4937 * Navigate from this activity to the activity specified by upIntent, finishing this activity
4938 * in the process. If the activity indicated by upIntent already exists in the task's history,
4939 * this activity and all others before the indicated activity in the history stack will be
4942 * <p>If the indicated activity does not appear in the history stack, this will finish
4943 * each activity in this task until the root activity of the task is reached, resulting in
4944 * an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy
4945 * when an activity may be reached by a path not passing through a canonical parent
4948 * <p>This method should be used when performing up navigation from within the same task
4949 * as the destination. If up navigation should cross tasks in some cases, see
4950 * {@link #shouldUpRecreateTask(Intent)}.</p>
4952 * @param upIntent An intent representing the target destination for up navigation
4954 * @return true if up navigation successfully reached the activity indicated by upIntent and
4955 * upIntent was delivered to it. false if an instance of the indicated activity could
4956 * not be found and this activity was simply finished normally.
4958 public boolean navigateUpTo(Intent upIntent) {
4959 if (mParent == null) {
4960 ComponentName destInfo = upIntent.getComponent();
4961 if (destInfo == null) {
4962 destInfo = upIntent.resolveActivity(getPackageManager());
4963 if (destInfo == null) {
4966 upIntent = new Intent(upIntent);
4967 upIntent.setComponent(destInfo);
4971 synchronized (this) {
4972 resultCode = mResultCode;
4973 resultData = mResultData;
4975 if (resultData != null) {
4976 resultData.setAllowFds(false);
4979 return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent,
4980 resultCode, resultData);
4981 } catch (RemoteException e) {
4985 return mParent.navigateUpToFromChild(this, upIntent);
4990 * This is called when a child activity of this one calls its
4991 * {@link #navigateUpTo} method. The default implementation simply calls
4992 * navigateUpTo(upIntent) on this activity (the parent).
4994 * @param child The activity making the call.
4995 * @param upIntent An intent representing the target destination for up navigation
4997 * @return true if up navigation successfully reached the activity indicated by upIntent and
4998 * upIntent was delivered to it. false if an instance of the indicated activity could
4999 * not be found and this activity was simply finished normally.
5001 public boolean navigateUpToFromChild(Activity child, Intent upIntent) {
5002 return navigateUpTo(upIntent);
5006 * Obtain an {@link Intent} that will launch an explicit target activity specified by
5007 * this activity's logical parent. The logical parent is named in the application's manifest
5008 * by the {@link android.R.attr#parentActivityName parentActivityName} attribute.
5009 * Activity subclasses may override this method to modify the Intent returned by
5010 * super.getParentActivityIntent() or to implement a different mechanism of retrieving
5011 * the parent intent entirely.
5013 * @return a new Intent targeting the defined parent of this activity or null if
5014 * there is no valid parent.
5016 public Intent getParentActivityIntent() {
5017 final String parentName = mActivityInfo.parentActivityName;
5018 if (TextUtils.isEmpty(parentName)) {
5022 // If the parent itself has no parent, generate a main activity intent.
5023 final ComponentName target = new ComponentName(this, parentName);
5025 final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0);
5026 final String parentActivity = parentInfo.parentActivityName;
5027 final Intent parentIntent = parentActivity == null
5028 ? Intent.makeMainActivity(target)
5029 : new Intent().setComponent(target);
5030 return parentIntent;
5031 } catch (NameNotFoundException e) {
5032 Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName +
5038 // ------------------ Internal API ------------------
5040 final void setParent(Activity parent) {
5044 final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token,
5045 Application application, Intent intent, ActivityInfo info, CharSequence title,
5046 Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances,
5047 Configuration config) {
5048 attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id,
5049 lastNonConfigurationInstances, config);
5052 final void attach(Context context, ActivityThread aThread,
5053 Instrumentation instr, IBinder token, int ident,
5054 Application application, Intent intent, ActivityInfo info,
5055 CharSequence title, Activity parent, String id,
5056 NonConfigurationInstances lastNonConfigurationInstances,
5057 Configuration config) {
5058 attachBaseContext(context);
5060 mFragments.attachActivity(this, mContainer, null);
5062 mWindow = PolicyManager.makeNewWindow(this);
5063 mWindow.setCallback(this);
5064 mWindow.getLayoutInflater().setPrivateFactory(this);
5065 if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) {
5066 mWindow.setSoftInputMode(info.softInputMode);
5068 if (info.uiOptions != 0) {
5069 mWindow.setUiOptions(info.uiOptions);
5071 mUiThread = Thread.currentThread();
5073 mMainThread = aThread;
5074 mInstrumentation = instr;
5077 mApplication = application;
5079 mComponent = intent.getComponent();
5080 mActivityInfo = info;
5084 mLastNonConfigurationInstances = lastNonConfigurationInstances;
5086 mWindow.setWindowManager(
5087 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE),
5088 mToken, mComponent.flattenToString(),
5089 (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0);
5090 if (mParent != null) {
5091 mWindow.setContainer(mParent.getWindow());
5093 mWindowManager = mWindow.getWindowManager();
5094 mCurrentConfig = config;
5098 public final IBinder getActivityToken() {
5099 return mParent != null ? mParent.getActivityToken() : mToken;
5102 final void performCreate(Bundle icicle) {
5104 mVisibleFromClient = !mWindow.getWindowStyle().getBoolean(
5105 com.android.internal.R.styleable.Window_windowNoDisplay, false);
5106 mFragments.dispatchActivityCreated();
5109 final void performStart() {
5110 mFragments.noteStateNotSaved();
5112 mFragments.execPendingActions();
5113 mInstrumentation.callActivityOnStart(this);
5115 throw new SuperNotCalledException(
5116 "Activity " + mComponent.toShortString() +
5117 " did not call through to super.onStart()");
5119 mFragments.dispatchStart();
5120 if (mAllLoaderManagers != null) {
5121 LoaderManagerImpl loaders[] = new LoaderManagerImpl[mAllLoaderManagers.size()];
5122 mAllLoaderManagers.values().toArray(loaders);
5123 if (loaders != null) {
5124 for (int i=0; i<loaders.length; i++) {
5125 LoaderManagerImpl lm = loaders[i];
5133 final void performRestart() {
5134 mFragments.noteStateNotSaved();
5138 if (mToken != null && mParent == null) {
5139 WindowManagerGlobal.getInstance().setStoppedState(mToken, false);
5142 synchronized (mManagedCursors) {
5143 final int N = mManagedCursors.size();
5144 for (int i=0; i<N; i++) {
5145 ManagedCursor mc = mManagedCursors.get(i);
5146 if (mc.mReleased || mc.mUpdated) {
5147 if (!mc.mCursor.requery()) {
5148 if (getApplicationInfo().targetSdkVersion
5149 >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
5150 throw new IllegalStateException(
5151 "trying to requery an already closed cursor "
5155 mc.mReleased = false;
5156 mc.mUpdated = false;
5162 mInstrumentation.callActivityOnRestart(this);
5164 throw new SuperNotCalledException(
5165 "Activity " + mComponent.toShortString() +
5166 " did not call through to super.onRestart()");
5172 final void performResume() {
5175 mFragments.execPendingActions();
5177 mLastNonConfigurationInstances = null;
5180 // mResumed is set by the instrumentation
5181 mInstrumentation.callActivityOnResume(this);
5183 throw new SuperNotCalledException(
5184 "Activity " + mComponent.toShortString() +
5185 " did not call through to super.onResume()");
5188 // Now really resume, and install the current status bar and menu.
5191 mFragments.dispatchResume();
5192 mFragments.execPendingActions();
5196 throw new SuperNotCalledException(
5197 "Activity " + mComponent.toShortString() +
5198 " did not call through to super.onPostResume()");
5202 final void performPause() {
5203 mFragments.dispatchPause();
5207 if (!mCalled && getApplicationInfo().targetSdkVersion
5208 >= android.os.Build.VERSION_CODES.GINGERBREAD) {
5209 throw new SuperNotCalledException(
5210 "Activity " + mComponent.toShortString() +
5211 " did not call through to super.onPause()");
5216 final void performUserLeaving() {
5217 onUserInteraction();
5221 final void performStop() {
5222 if (mLoadersStarted) {
5223 mLoadersStarted = false;
5224 if (mLoaderManager != null) {
5225 if (!mChangingConfigurations) {
5226 mLoaderManager.doStop();
5228 mLoaderManager.doRetain();
5234 if (mWindow != null) {
5235 mWindow.closeAllPanels();
5238 if (mToken != null && mParent == null) {
5239 WindowManagerGlobal.getInstance().setStoppedState(mToken, true);
5242 mFragments.dispatchStop();
5245 mInstrumentation.callActivityOnStop(this);
5247 throw new SuperNotCalledException(
5248 "Activity " + mComponent.toShortString() +
5249 " did not call through to super.onStop()");
5252 synchronized (mManagedCursors) {
5253 final int N = mManagedCursors.size();
5254 for (int i=0; i<N; i++) {
5255 ManagedCursor mc = mManagedCursors.get(i);
5256 if (!mc.mReleased) {
5257 mc.mCursor.deactivate();
5258 mc.mReleased = true;
5268 final void performDestroy() {
5271 mFragments.dispatchDestroy();
5273 if (mLoaderManager != null) {
5274 mLoaderManager.doDestroy();
5281 public final boolean isResumed() {
5285 void dispatchActivityResult(String who, int requestCode,
5286 int resultCode, Intent data) {
5288 TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode
5289 + ", resCode=" + resultCode + ", data=" + data);
5290 mFragments.noteStateNotSaved();
5292 onActivityResult(requestCode, resultCode, data);
5294 Fragment frag = mFragments.findFragmentByWho(who);
5296 frag.onActivityResult(requestCode, resultCode, data);