| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.app; |
| |
| import com.android.internal.app.ActionBarImpl; |
| import com.android.internal.policy.PolicyManager; |
| |
| import android.content.ComponentCallbacks; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.CursorLoader; |
| import android.content.IIntentSender; |
| import android.content.Intent; |
| import android.content.IntentSender; |
| import android.content.SharedPreferences; |
| import android.content.pm.ActivityInfo; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.database.Cursor; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.drawable.Drawable; |
| import android.media.AudioManager; |
| import android.net.Uri; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Parcelable; |
| import android.os.RemoteException; |
| import android.os.StrictMode; |
| import android.text.Selection; |
| import android.text.SpannableStringBuilder; |
| import android.text.TextUtils; |
| import android.text.method.TextKeyListener; |
| import android.util.AttributeSet; |
| import android.util.Config; |
| import android.util.EventLog; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.ActionMode; |
| import android.view.ContextMenu; |
| import android.view.ContextMenu.ContextMenuInfo; |
| import android.view.ContextThemeWrapper; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuInflater; |
| import android.view.MenuItem; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.View.OnCreateContextMenuListener; |
| import android.view.ViewGroup; |
| import android.view.ViewGroup.LayoutParams; |
| import android.view.ViewManager; |
| import android.view.Window; |
| import android.view.WindowManager; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.widget.AdapterView; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| |
| /** |
| * An activity is a single, focused thing that the user can do. Almost all |
| * activities interact with the user, so the Activity class takes care of |
| * creating a window for you in which you can place your UI with |
| * {@link #setContentView}. While activities are often presented to the user |
| * as full-screen windows, they can also be used in other ways: as floating |
| * windows (via a theme with {@link android.R.attr#windowIsFloating} set) |
| * or embedded inside of another activity (using {@link ActivityGroup}). |
| * |
| * There are two methods almost all subclasses of Activity will implement: |
| * |
| * <ul> |
| * <li> {@link #onCreate} is where you initialize your activity. Most |
| * importantly, here you will usually call {@link #setContentView(int)} |
| * with a layout resource defining your UI, and using {@link #findViewById} |
| * to retrieve the widgets in that UI that you need to interact with |
| * programmatically. |
| * |
| * <li> {@link #onPause} is where you deal with the user leaving your |
| * activity. Most importantly, any changes made by the user should at this |
| * point be committed (usually to the |
| * {@link android.content.ContentProvider} holding the data). |
| * </ul> |
| * |
| * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all |
| * activity classes must have a corresponding |
| * {@link android.R.styleable#AndroidManifestActivity <activity>} |
| * declaration in their package's <code>AndroidManifest.xml</code>.</p> |
| * |
| * <p>The Activity class is an important part of an application's overall lifecycle, |
| * and the way activities are launched and put together is a fundamental |
| * part of the platform's application model. For a detailed perspective on the structure of an |
| * Android application and how activities behave, please read the |
| * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a> and |
| * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> |
| * documents.</p> |
| * |
| * <p>You can also find a detailed discussion about how to create activities in the |
| * <a href="{@docRoot}guide/topics/fundamentals/activities.html">Activities</a> |
| * document.</p> |
| * |
| * <p>Topics covered here: |
| * <ol> |
| * <li><a href="#Fragments">Fragments</a> |
| * <li><a href="#ActivityLifecycle">Activity Lifecycle</a> |
| * <li><a href="#ConfigurationChanges">Configuration Changes</a> |
| * <li><a href="#StartingActivities">Starting Activities and Getting Results</a> |
| * <li><a href="#SavingPersistentState">Saving Persistent State</a> |
| * <li><a href="#Permissions">Permissions</a> |
| * <li><a href="#ProcessLifecycle">Process Lifecycle</a> |
| * </ol> |
| * |
| * <a name="Fragments"></a> |
| * <h3>Fragments</h3> |
| * |
| * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity |
| * implementations can make use of the {@link Fragment} class to better |
| * modularize their code, build more sophisticated user interfaces for larger |
| * screens, and help scale their application between small and large screens. |
| * |
| * <a name="ActivityLifecycle"></a> |
| * <h3>Activity Lifecycle</h3> |
| * |
| * <p>Activities in the system are managed as an <em>activity stack</em>. |
| * When a new activity is started, it is placed on the top of the stack |
| * and becomes the running activity -- the previous activity always remains |
| * below it in the stack, and will not come to the foreground again until |
| * the new activity exits.</p> |
| * |
| * <p>An activity has essentially four states:</p> |
| * <ul> |
| * <li> If an activity in the foreground of the screen (at the top of |
| * the stack), |
| * it is <em>active</em> or <em>running</em>. </li> |
| * <li>If an activity has lost focus but is still visible (that is, a new non-full-sized |
| * or transparent activity has focus on top of your activity), it |
| * is <em>paused</em>. A paused activity is completely alive (it |
| * maintains all state and member information and remains attached to |
| * the window manager), but can be killed by the system in extreme |
| * low memory situations. |
| * <li>If an activity is completely obscured by another activity, |
| * it is <em>stopped</em>. It still retains all state and member information, |
| * however, it is no longer visible to the user so its window is hidden |
| * and it will often be killed by the system when memory is needed |
| * elsewhere.</li> |
| * <li>If an activity is paused or stopped, the system can drop the activity |
| * from memory by either asking it to finish, or simply killing its |
| * process. When it is displayed again to the user, it must be |
| * completely restarted and restored to its previous state.</li> |
| * </ul> |
| * |
| * <p>The following diagram shows the important state paths of an Activity. |
| * The square rectangles represent callback methods you can implement to |
| * perform operations when the Activity moves between states. The colored |
| * ovals are major states the Activity can be in.</p> |
| * |
| * <p><img src="../../../images/activity_lifecycle.png" |
| * alt="State diagram for an Android Activity Lifecycle." border="0" /></p> |
| * |
| * <p>There are three key loops you may be interested in monitoring within your |
| * activity: |
| * |
| * <ul> |
| * <li>The <b>entire lifetime</b> of an activity happens between the first call |
| * to {@link android.app.Activity#onCreate} through to a single final call |
| * to {@link android.app.Activity#onDestroy}. An activity will do all setup |
| * of "global" state in onCreate(), and release all remaining resources in |
| * onDestroy(). For example, if it has a thread running in the background |
| * to download data from the network, it may create that thread in onCreate() |
| * and then stop the thread in onDestroy(). |
| * |
| * <li>The <b>visible lifetime</b> of an activity happens between a call to |
| * {@link android.app.Activity#onStart} until a corresponding call to |
| * {@link android.app.Activity#onStop}. During this time the user can see the |
| * activity on-screen, though it may not be in the foreground and interacting |
| * with the user. Between these two methods you can maintain resources that |
| * are needed to show the activity to the user. For example, you can register |
| * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes |
| * that impact your UI, and unregister it in onStop() when the user an no |
| * longer see what you are displaying. The onStart() and onStop() methods |
| * can be called multiple times, as the activity becomes visible and hidden |
| * to the user. |
| * |
| * <li>The <b>foreground lifetime</b> of an activity happens between a call to |
| * {@link android.app.Activity#onResume} until a corresponding call to |
| * {@link android.app.Activity#onPause}. During this time the activity is |
| * in front of all other activities and interacting with the user. An activity |
| * can frequently go between the resumed and paused states -- for example when |
| * the device goes to sleep, when an activity result is delivered, when a new |
| * intent is delivered -- so the code in these methods should be fairly |
| * lightweight. |
| * </ul> |
| * |
| * <p>The entire lifecycle of an activity is defined by the following |
| * Activity methods. All of these are hooks that you can override |
| * to do appropriate work when the activity changes state. All |
| * activities will implement {@link android.app.Activity#onCreate} |
| * to do their initial setup; many will also implement |
| * {@link android.app.Activity#onPause} to commit changes to data and |
| * otherwise prepare to stop interacting with the user. You should always |
| * call up to your superclass when implementing these methods.</p> |
| * |
| * </p> |
| * <pre class="prettyprint"> |
| * public class Activity extends ApplicationContext { |
| * protected void onCreate(Bundle savedInstanceState); |
| * |
| * protected void onStart(); |
| * |
| * protected void onRestart(); |
| * |
| * protected void onResume(); |
| * |
| * protected void onPause(); |
| * |
| * protected void onStop(); |
| * |
| * protected void onDestroy(); |
| * } |
| * </pre> |
| * |
| * <p>In general the movement through an activity's lifecycle looks like |
| * this:</p> |
| * |
| * <table border="2" width="85%" align="center" frame="hsides" rules="rows"> |
| * <colgroup align="left" span="3" /> |
| * <colgroup align="left" /> |
| * <colgroup align="center" /> |
| * <colgroup align="center" /> |
| * |
| * <thead> |
| * <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr> |
| * </thead> |
| * |
| * <tbody> |
| * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th> |
| * <td>Called when the activity is first created. |
| * This is where you should do all of your normal static set up: |
| * create views, bind data to lists, etc. This method also |
| * provides you with a Bundle containing the activity's previously |
| * frozen state, if there was one. |
| * <p>Always followed by <code>onStart()</code>.</td> |
| * <td align="center">No</td> |
| * <td align="center"><code>onStart()</code></td> |
| * </tr> |
| * |
| * <tr><td rowspan="5" style="border-left: none; border-right: none;"> </td> |
| * <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th> |
| * <td>Called after your activity has been stopped, prior to it being |
| * started again. |
| * <p>Always followed by <code>onStart()</code></td> |
| * <td align="center">No</td> |
| * <td align="center"><code>onStart()</code></td> |
| * </tr> |
| * |
| * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th> |
| * <td>Called when the activity is becoming visible to the user. |
| * <p>Followed by <code>onResume()</code> if the activity comes |
| * to the foreground, or <code>onStop()</code> if it becomes hidden.</td> |
| * <td align="center">No</td> |
| * <td align="center"><code>onResume()</code> or <code>onStop()</code></td> |
| * </tr> |
| * |
| * <tr><td rowspan="2" style="border-left: none;"> </td> |
| * <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th> |
| * <td>Called when the activity will start |
| * interacting with the user. At this point your activity is at |
| * the top of the activity stack, with user input going to it. |
| * <p>Always followed by <code>onPause()</code>.</td> |
| * <td align="center">No</td> |
| * <td align="center"><code>onPause()</code></td> |
| * </tr> |
| * |
| * <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th> |
| * <td>Called when the system is about to start resuming a previous |
| * activity. This is typically used to commit unsaved changes to |
| * persistent data, stop animations and other things that may be consuming |
| * CPU, etc. Implementations of this method must be very quick because |
| * the next activity will not be resumed until this method returns. |
| * <p>Followed by either <code>onResume()</code> if the activity |
| * returns back to the front, or <code>onStop()</code> if it becomes |
| * invisible to the user.</td> |
| * <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td> |
| * <td align="center"><code>onResume()</code> or<br> |
| * <code>onStop()</code></td> |
| * </tr> |
| * |
| * <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th> |
| * <td>Called when the activity is no longer visible to the user, because |
| * another activity has been resumed and is covering this one. This |
| * may happen either because a new activity is being started, an existing |
| * one is being brought in front of this one, or this one is being |
| * destroyed. |
| * <p>Followed by either <code>onRestart()</code> if |
| * this activity is coming back to interact with the user, or |
| * <code>onDestroy()</code> if this activity is going away.</td> |
| * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> |
| * <td align="center"><code>onRestart()</code> or<br> |
| * <code>onDestroy()</code></td> |
| * </tr> |
| * |
| * <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th> |
| * <td>The final call you receive before your |
| * activity is destroyed. This can happen either because the |
| * activity is finishing (someone called {@link Activity#finish} on |
| * it, or because the system is temporarily destroying this |
| * instance of the activity to save space. You can distinguish |
| * between these two scenarios with the {@link |
| * Activity#isFinishing} method.</td> |
| * <td align="center"><font color="#800000"><strong>Yes</strong></font></td> |
| * <td align="center"><em>nothing</em></td> |
| * </tr> |
| * </tbody> |
| * </table> |
| * |
| * <p>Note the "Killable" column in the above table -- for those methods that |
| * are marked as being killable, after that method returns the process hosting the |
| * activity may killed by the system <em>at any time</em> without another line |
| * of its code being executed. Because of this, you should use the |
| * {@link #onPause} method to write any persistent data (such as user edits) |
| * to storage. In addition, the method |
| * {@link #onSaveInstanceState(Bundle)} is called before placing the activity |
| * in such a background state, allowing you to save away any dynamic instance |
| * state in your activity into the given Bundle, to be later received in |
| * {@link #onCreate} if the activity needs to be re-created. |
| * See the <a href="#ProcessLifecycle">Process Lifecycle</a> |
| * section for more information on how the lifecycle of a process is tied |
| * to the activities it is hosting. Note that it is important to save |
| * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} |
| * because the later is not part of the lifecycle callbacks, so will not |
| * be called in every situation as described in its documentation.</p> |
| * |
| * <p class="note">Be aware that these semantics will change slightly between |
| * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * vs. those targeting prior platforms. Starting with Honeycomb, an application |
| * is not in the killable state until its {@link #onStop} has returned. This |
| * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be |
| * safely called after {@link #onPause()} and allows and application to safely |
| * wait until {@link #onStop()} to save persistent state.</p> |
| * |
| * <p>For those methods that are not marked as being killable, the activity's |
| * process will not be killed by the system starting from the time the method |
| * is called and continuing after it returns. Thus an activity is in the killable |
| * state, for example, between after <code>onPause()</code> to the start of |
| * <code>onResume()</code>.</p> |
| * |
| * <a name="ConfigurationChanges"></a> |
| * <h3>Configuration Changes</h3> |
| * |
| * <p>If the configuration of the device (as defined by the |
| * {@link Configuration Resources.Configuration} class) changes, |
| * then anything displaying a user interface will need to update to match that |
| * configuration. Because Activity is the primary mechanism for interacting |
| * with the user, it includes special support for handling configuration |
| * changes.</p> |
| * |
| * <p>Unless you specify otherwise, a configuration change (such as a change |
| * in screen orientation, language, input devices, etc) will cause your |
| * current activity to be <em>destroyed</em>, going through the normal activity |
| * lifecycle process of {@link #onPause}, |
| * {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity |
| * had been in the foreground or visible to the user, once {@link #onDestroy} is |
| * called in that instance then a new instance of the activity will be |
| * created, with whatever savedInstanceState the previous instance had generated |
| * from {@link #onSaveInstanceState}.</p> |
| * |
| * <p>This is done because any application resource, |
| * including layout files, can change based on any configuration value. Thus |
| * the only safe way to handle a configuration change is to re-retrieve all |
| * resources, including layouts, drawables, and strings. Because activities |
| * must already know how to save their state and re-create themselves from |
| * that state, this is a convenient way to have an activity restart itself |
| * with a new configuration.</p> |
| * |
| * <p>In some special cases, you may want to bypass restarting of your |
| * activity based on one or more types of configuration changes. This is |
| * done with the {@link android.R.attr#configChanges android:configChanges} |
| * attribute in its manifest. For any types of configuration changes you say |
| * that you handle there, you will receive a call to your current activity's |
| * {@link #onConfigurationChanged} method instead of being restarted. If |
| * a configuration change involves any that you do not handle, however, the |
| * activity will still be restarted and {@link #onConfigurationChanged} |
| * will not be called.</p> |
| * |
| * <a name="StartingActivities"></a> |
| * <h3>Starting Activities and Getting Results</h3> |
| * |
| * <p>The {@link android.app.Activity#startActivity} |
| * method is used to start a |
| * new activity, which will be placed at the top of the activity stack. It |
| * takes a single argument, an {@link android.content.Intent Intent}, |
| * which describes the activity |
| * to be executed.</p> |
| * |
| * <p>Sometimes you want to get a result back from an activity when it |
| * ends. For example, you may start an activity that lets the user pick |
| * a person in a list of contacts; when it ends, it returns the person |
| * that was selected. To do this, you call the |
| * {@link android.app.Activity#startActivityForResult(Intent, int)} |
| * version with a second integer parameter identifying the call. The result |
| * will come back through your {@link android.app.Activity#onActivityResult} |
| * method.</p> |
| * |
| * <p>When an activity exits, it can call |
| * {@link android.app.Activity#setResult(int)} |
| * to return data back to its parent. It must always supply a result code, |
| * which can be the standard results RESULT_CANCELED, RESULT_OK, or any |
| * custom values starting at RESULT_FIRST_USER. In addition, it can optionally |
| * return back an Intent containing any additional data it wants. All of this |
| * information appears back on the |
| * parent's <code>Activity.onActivityResult()</code>, along with the integer |
| * identifier it originally supplied.</p> |
| * |
| * <p>If a child activity fails for any reason (such as crashing), the parent |
| * activity will receive a result with the code RESULT_CANCELED.</p> |
| * |
| * <pre class="prettyprint"> |
| * public class MyActivity extends Activity { |
| * ... |
| * |
| * static final int PICK_CONTACT_REQUEST = 0; |
| * |
| * protected boolean onKeyDown(int keyCode, KeyEvent event) { |
| * if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { |
| * // When the user center presses, let them pick a contact. |
| * startActivityForResult( |
| * new Intent(Intent.ACTION_PICK, |
| * new Uri("content://contacts")), |
| * PICK_CONTACT_REQUEST); |
| * return true; |
| * } |
| * return false; |
| * } |
| * |
| * protected void onActivityResult(int requestCode, int resultCode, |
| * Intent data) { |
| * if (requestCode == PICK_CONTACT_REQUEST) { |
| * if (resultCode == RESULT_OK) { |
| * // A contact was picked. Here we will just display it |
| * // to the user. |
| * startActivity(new Intent(Intent.ACTION_VIEW, data)); |
| * } |
| * } |
| * } |
| * } |
| * </pre> |
| * |
| * <a name="SavingPersistentState"></a> |
| * <h3>Saving Persistent State</h3> |
| * |
| * <p>There are generally two kinds of persistent state than an activity |
| * will deal with: shared document-like data (typically stored in a SQLite |
| * database using a {@linkplain android.content.ContentProvider content provider}) |
| * and internal state such as user preferences.</p> |
| * |
| * <p>For content provider data, we suggest that activities use a |
| * "edit in place" user model. That is, any edits a user makes are effectively |
| * made immediately without requiring an additional confirmation step. |
| * Supporting this model is generally a simple matter of following two rules:</p> |
| * |
| * <ul> |
| * <li> <p>When creating a new document, the backing database entry or file for |
| * it is created immediately. For example, if the user chooses to write |
| * a new e-mail, a new entry for that e-mail is created as soon as they |
| * start entering data, so that if they go to any other activity after |
| * that point this e-mail will now appear in the list of drafts.</p> |
| * <li> <p>When an activity's <code>onPause()</code> method is called, it should |
| * commit to the backing content provider or file any changes the user |
| * has made. This ensures that those changes will be seen by any other |
| * activity that is about to run. You will probably want to commit |
| * your data even more aggressively at key times during your |
| * activity's lifecycle: for example before starting a new |
| * activity, before finishing your own activity, when the user |
| * switches between input fields, etc.</p> |
| * </ul> |
| * |
| * <p>This model is designed to prevent data loss when a user is navigating |
| * between activities, and allows the system to safely kill an activity (because |
| * system resources are needed somewhere else) at any time after it has been |
| * paused. Note this implies |
| * that the user pressing BACK from your activity does <em>not</em> |
| * mean "cancel" -- it means to leave the activity with its current contents |
| * saved away. Canceling edits in an activity must be provided through |
| * some other mechanism, such as an explicit "revert" or "undo" option.</p> |
| * |
| * <p>See the {@linkplain android.content.ContentProvider content package} for |
| * more information about content providers. These are a key aspect of how |
| * different activities invoke and propagate data between themselves.</p> |
| * |
| * <p>The Activity class also provides an API for managing internal persistent state |
| * associated with an activity. This can be used, for example, to remember |
| * the user's preferred initial display in a calendar (day view or week view) |
| * or the user's default home page in a web browser.</p> |
| * |
| * <p>Activity persistent state is managed |
| * with the method {@link #getPreferences}, |
| * allowing you to retrieve and |
| * modify a set of name/value pairs associated with the activity. To use |
| * preferences that are shared across multiple application components |
| * (activities, receivers, services, providers), you can use the underlying |
| * {@link Context#getSharedPreferences Context.getSharedPreferences()} method |
| * to retrieve a preferences |
| * object stored under a specific name. |
| * (Note that it is not possible to share settings data across application |
| * packages -- for that you will need a content provider.)</p> |
| * |
| * <p>Here is an excerpt from a calendar activity that stores the user's |
| * preferred view mode in its persistent settings:</p> |
| * |
| * <pre class="prettyprint"> |
| * public class CalendarActivity extends Activity { |
| * ... |
| * |
| * static final int DAY_VIEW_MODE = 0; |
| * static final int WEEK_VIEW_MODE = 1; |
| * |
| * private SharedPreferences mPrefs; |
| * private int mCurViewMode; |
| * |
| * protected void onCreate(Bundle savedInstanceState) { |
| * super.onCreate(savedInstanceState); |
| * |
| * SharedPreferences mPrefs = getSharedPreferences(); |
| * mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE); |
| * } |
| * |
| * protected void onPause() { |
| * super.onPause(); |
| * |
| * SharedPreferences.Editor ed = mPrefs.edit(); |
| * ed.putInt("view_mode", mCurViewMode); |
| * ed.commit(); |
| * } |
| * } |
| * </pre> |
| * |
| * <a name="Permissions"></a> |
| * <h3>Permissions</h3> |
| * |
| * <p>The ability to start a particular Activity can be enforced when it is |
| * declared in its |
| * manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} |
| * tag. By doing so, other applications will need to declare a corresponding |
| * {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} |
| * element in their own manifest to be able to start that activity. |
| * |
| * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a> |
| * document for more information on permissions and security in general. |
| * |
| * <a name="ProcessLifecycle"></a> |
| * <h3>Process Lifecycle</h3> |
| * |
| * <p>The Android system attempts to keep application process around for as |
| * long as possible, but eventually will need to remove old processes when |
| * memory runs low. As described in <a href="#ActivityLifecycle">Activity |
| * Lifecycle</a>, the decision about which process to remove is intimately |
| * tied to the state of the user's interaction with it. In general, there |
| * are four states a process can be in based on the activities running in it, |
| * listed here in order of importance. The system will kill less important |
| * processes (the last ones) before it resorts to killing more important |
| * processes (the first ones). |
| * |
| * <ol> |
| * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen |
| * that the user is currently interacting with) is considered the most important. |
| * Its process will only be killed as a last resort, if it uses more memory |
| * than is available on the device. Generally at this point the device has |
| * reached a memory paging state, so this is required in order to keep the user |
| * interface responsive. |
| * <li> <p>A <b>visible activity</b> (an activity that is visible to the user |
| * but not in the foreground, such as one sitting behind a foreground dialog) |
| * is considered extremely important and will not be killed unless that is |
| * required to keep the foreground activity running. |
| * <li> <p>A <b>background activity</b> (an activity that is not visible to |
| * the user and has been paused) is no longer critical, so the system may |
| * safely kill its process to reclaim memory for other foreground or |
| * visible processes. If its process needs to be killed, when the user navigates |
| * back to the activity (making it visible on the screen again), its |
| * {@link #onCreate} method will be called with the savedInstanceState it had previously |
| * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same |
| * state as the user last left it. |
| * <li> <p>An <b>empty process</b> is one hosting no activities or other |
| * application components (such as {@link Service} or |
| * {@link android.content.BroadcastReceiver} classes). These are killed very |
| * quickly by the system as memory becomes low. For this reason, any |
| * background operation you do outside of an activity must be executed in the |
| * context of an activity BroadcastReceiver or Service to ensure that the system |
| * knows it needs to keep your process around. |
| * </ol> |
| * |
| * <p>Sometimes an Activity may need to do a long-running operation that exists |
| * independently of the activity lifecycle itself. An example may be a camera |
| * application that allows you to upload a picture to a web site. The upload |
| * may take a long time, and the application should allow the user to leave |
| * the application will it is executing. To accomplish this, your Activity |
| * should start a {@link Service} in which the upload takes place. This allows |
| * the system to properly prioritize your process (considering it to be more |
| * important than other non-visible applications) for the duration of the |
| * upload, independent of whether the original activity is paused, stopped, |
| * or finished. |
| */ |
| public class Activity extends ContextThemeWrapper |
| implements LayoutInflater.Factory2, |
| Window.Callback, KeyEvent.Callback, |
| OnCreateContextMenuListener, ComponentCallbacks { |
| private static final String TAG = "Activity"; |
| |
| /** Standard activity result: operation canceled. */ |
| public static final int RESULT_CANCELED = 0; |
| /** Standard activity result: operation succeeded. */ |
| public static final int RESULT_OK = -1; |
| /** Start of user-defined activity results. */ |
| public static final int RESULT_FIRST_USER = 1; |
| |
| private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState"; |
| private static final String FRAGMENTS_TAG = "android:fragments"; |
| private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds"; |
| private static final String SAVED_DIALOGS_TAG = "android:savedDialogs"; |
| private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_"; |
| private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_"; |
| |
| private static class ManagedDialog { |
| Dialog mDialog; |
| Bundle mArgs; |
| } |
| private SparseArray<ManagedDialog> mManagedDialogs; |
| |
| // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called. |
| private Instrumentation mInstrumentation; |
| private IBinder mToken; |
| private int mIdent; |
| /*package*/ String mEmbeddedID; |
| private Application mApplication; |
| /*package*/ Intent mIntent; |
| private ComponentName mComponent; |
| /*package*/ ActivityInfo mActivityInfo; |
| /*package*/ ActivityThread mMainThread; |
| Activity mParent; |
| boolean mCalled; |
| boolean mCheckedForLoaderManager; |
| boolean mLoadersStarted; |
| /*package*/ boolean mResumed; |
| private boolean mStopped; |
| boolean mFinished; |
| boolean mStartedActivity; |
| /** true if the activity is going through a transient pause */ |
| /*package*/ boolean mTemporaryPause = false; |
| /** true if the activity is being destroyed in order to recreate it with a new configuration */ |
| /*package*/ boolean mChangingConfigurations = false; |
| /*package*/ int mConfigChangeFlags; |
| /*package*/ Configuration mCurrentConfig; |
| private SearchManager mSearchManager; |
| |
| static final class NonConfigurationInstances { |
| Object activity; |
| HashMap<String, Object> children; |
| ArrayList<Fragment> fragments; |
| SparseArray<LoaderManagerImpl> loaders; |
| } |
| /* package */ NonConfigurationInstances mLastNonConfigurationInstances; |
| |
| private Window mWindow; |
| |
| private WindowManager mWindowManager; |
| /*package*/ View mDecor = null; |
| /*package*/ boolean mWindowAdded = false; |
| /*package*/ boolean mVisibleFromServer = false; |
| /*package*/ boolean mVisibleFromClient = true; |
| /*package*/ ActionBarImpl mActionBar = null; |
| |
| private CharSequence mTitle; |
| private int mTitleColor = 0; |
| |
| final FragmentManagerImpl mFragments = new FragmentManagerImpl(); |
| |
| SparseArray<LoaderManagerImpl> mAllLoaderManagers; |
| LoaderManagerImpl mLoaderManager; |
| |
| private static final class ManagedCursor { |
| ManagedCursor(Cursor cursor) { |
| mCursor = cursor; |
| mReleased = false; |
| mUpdated = false; |
| } |
| |
| private final Cursor mCursor; |
| private boolean mReleased; |
| private boolean mUpdated; |
| } |
| private final ArrayList<ManagedCursor> mManagedCursors = |
| new ArrayList<ManagedCursor>(); |
| |
| // protected by synchronized (this) |
| int mResultCode = RESULT_CANCELED; |
| Intent mResultData = null; |
| |
| private boolean mTitleReady = false; |
| |
| private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE; |
| private SpannableStringBuilder mDefaultKeySsb = null; |
| |
| protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused}; |
| |
| private Thread mUiThread; |
| final Handler mHandler = new Handler(); |
| |
| /** Return the intent that started this activity. */ |
| public Intent getIntent() { |
| return mIntent; |
| } |
| |
| /** |
| * Change the intent returned by {@link #getIntent}. This holds a |
| * reference to the given intent; it does not copy it. Often used in |
| * conjunction with {@link #onNewIntent}. |
| * |
| * @param newIntent The new Intent object to return from getIntent |
| * |
| * @see #getIntent |
| * @see #onNewIntent |
| */ |
| public void setIntent(Intent newIntent) { |
| mIntent = newIntent; |
| } |
| |
| /** Return the application that owns this activity. */ |
| public final Application getApplication() { |
| return mApplication; |
| } |
| |
| /** Is this activity embedded inside of another activity? */ |
| public final boolean isChild() { |
| return mParent != null; |
| } |
| |
| /** Return the parent activity if this view is an embedded child. */ |
| public final Activity getParent() { |
| return mParent; |
| } |
| |
| /** Retrieve the window manager for showing custom windows. */ |
| public WindowManager getWindowManager() { |
| return mWindowManager; |
| } |
| |
| /** |
| * Retrieve the current {@link android.view.Window} for the activity. |
| * This can be used to directly access parts of the Window API that |
| * are not available through Activity/Screen. |
| * |
| * @return Window The current window, or null if the activity is not |
| * visual. |
| */ |
| public Window getWindow() { |
| return mWindow; |
| } |
| |
| /** |
| * Return the LoaderManager for this fragment, creating it if needed. |
| */ |
| public LoaderManager getLoaderManager() { |
| if (mLoaderManager != null) { |
| return mLoaderManager; |
| } |
| mCheckedForLoaderManager = true; |
| mLoaderManager = getLoaderManager(-1, mLoadersStarted, true); |
| return mLoaderManager; |
| } |
| |
| LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) { |
| if (mAllLoaderManagers == null) { |
| mAllLoaderManagers = new SparseArray<LoaderManagerImpl>(); |
| } |
| LoaderManagerImpl lm = mAllLoaderManagers.get(index); |
| if (lm == null) { |
| if (create) { |
| lm = new LoaderManagerImpl(this, started); |
| mAllLoaderManagers.put(index, lm); |
| } |
| } else { |
| lm.updateActivity(this); |
| } |
| return lm; |
| } |
| |
| /** |
| * Calls {@link android.view.Window#getCurrentFocus} on the |
| * Window of this Activity to return the currently focused view. |
| * |
| * @return View The current View with focus or null. |
| * |
| * @see #getWindow |
| * @see android.view.Window#getCurrentFocus |
| */ |
| public View getCurrentFocus() { |
| return mWindow != null ? mWindow.getCurrentFocus() : null; |
| } |
| |
| @Override |
| public int getWallpaperDesiredMinimumWidth() { |
| int width = super.getWallpaperDesiredMinimumWidth(); |
| return width <= 0 ? getWindowManager().getDefaultDisplay().getWidth() : width; |
| } |
| |
| @Override |
| public int getWallpaperDesiredMinimumHeight() { |
| int height = super.getWallpaperDesiredMinimumHeight(); |
| return height <= 0 ? getWindowManager().getDefaultDisplay().getHeight() : height; |
| } |
| |
| /** |
| * Called when the activity is starting. This is where most initialization |
| * should go: calling {@link #setContentView(int)} to inflate the |
| * activity's UI, using {@link #findViewById} to programmatically interact |
| * with widgets in the UI, calling |
| * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve |
| * cursors for data being displayed, etc. |
| * |
| * <p>You can call {@link #finish} from within this function, in |
| * which case onDestroy() will be immediately called without any of the rest |
| * of the activity lifecycle ({@link #onStart}, {@link #onResume}, |
| * {@link #onPause}, etc) executing. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @param savedInstanceState If the activity is being re-initialized after |
| * previously being shut down then this Bundle contains the data it most |
| * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> |
| * |
| * @see #onStart |
| * @see #onSaveInstanceState |
| * @see #onRestoreInstanceState |
| * @see #onPostCreate |
| */ |
| protected void onCreate(Bundle savedInstanceState) { |
| if (mLastNonConfigurationInstances != null) { |
| mAllLoaderManagers = mLastNonConfigurationInstances.loaders; |
| } |
| if (savedInstanceState != null) { |
| Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); |
| mFragments.restoreAllState(p, mLastNonConfigurationInstances != null |
| ? mLastNonConfigurationInstances.fragments : null); |
| } |
| mFragments.dispatchCreate(); |
| mCalled = true; |
| } |
| |
| /** |
| * The hook for {@link ActivityThread} to restore the state of this activity. |
| * |
| * Calls {@link #onSaveInstanceState(android.os.Bundle)} and |
| * {@link #restoreManagedDialogs(android.os.Bundle)}. |
| * |
| * @param savedInstanceState contains the saved state |
| */ |
| final void performRestoreInstanceState(Bundle savedInstanceState) { |
| onRestoreInstanceState(savedInstanceState); |
| restoreManagedDialogs(savedInstanceState); |
| } |
| |
| /** |
| * This method is called after {@link #onStart} when the activity is |
| * being re-initialized from a previously saved state, given here in |
| * <var>savedInstanceState</var>. Most implementations will simply use {@link #onCreate} |
| * to restore their state, but it is sometimes convenient to do it here |
| * after all of the initialization has been done or to allow subclasses to |
| * decide whether to use your default implementation. The default |
| * implementation of this method performs a restore of any view state that |
| * had previously been frozen by {@link #onSaveInstanceState}. |
| * |
| * <p>This method is called between {@link #onStart} and |
| * {@link #onPostCreate}. |
| * |
| * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}. |
| * |
| * @see #onCreate |
| * @see #onPostCreate |
| * @see #onResume |
| * @see #onSaveInstanceState |
| */ |
| protected void onRestoreInstanceState(Bundle savedInstanceState) { |
| if (mWindow != null) { |
| Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); |
| if (windowState != null) { |
| mWindow.restoreHierarchyState(windowState); |
| } |
| } |
| } |
| |
| /** |
| * Restore the state of any saved managed dialogs. |
| * |
| * @param savedInstanceState The bundle to restore from. |
| */ |
| private void restoreManagedDialogs(Bundle savedInstanceState) { |
| final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); |
| if (b == null) { |
| return; |
| } |
| |
| final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); |
| final int numDialogs = ids.length; |
| mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); |
| for (int i = 0; i < numDialogs; i++) { |
| final Integer dialogId = ids[i]; |
| Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); |
| if (dialogState != null) { |
| // Calling onRestoreInstanceState() below will invoke dispatchOnCreate |
| // so tell createDialog() not to do it, otherwise we get an exception |
| final ManagedDialog md = new ManagedDialog(); |
| md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); |
| md.mDialog = createDialog(dialogId, dialogState, md.mArgs); |
| if (md.mDialog != null) { |
| mManagedDialogs.put(dialogId, md); |
| onPrepareDialog(dialogId, md.mDialog, md.mArgs); |
| md.mDialog.onRestoreInstanceState(dialogState); |
| } |
| } |
| } |
| } |
| |
| private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) { |
| final Dialog dialog = onCreateDialog(dialogId, args); |
| if (dialog == null) { |
| return null; |
| } |
| dialog.dispatchOnCreate(state); |
| return dialog; |
| } |
| |
| private static String savedDialogKeyFor(int key) { |
| return SAVED_DIALOG_KEY_PREFIX + key; |
| } |
| |
| private static String savedDialogArgsKeyFor(int key) { |
| return SAVED_DIALOG_ARGS_KEY_PREFIX + key; |
| } |
| |
| /** |
| * Called when activity start-up is complete (after {@link #onStart} |
| * and {@link #onRestoreInstanceState} have been called). Applications will |
| * generally not implement this method; it is intended for system |
| * classes to do final initialization after application code has run. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @param savedInstanceState If the activity is being re-initialized after |
| * previously being shut down then this Bundle contains the data it most |
| * recently supplied in {@link #onSaveInstanceState}. <b><i>Note: Otherwise it is null.</i></b> |
| * @see #onCreate |
| */ |
| protected void onPostCreate(Bundle savedInstanceState) { |
| if (!isChild()) { |
| mTitleReady = true; |
| onTitleChanged(getTitle(), getTitleColor()); |
| } |
| mCalled = true; |
| } |
| |
| /** |
| * Called after {@link #onCreate} — or after {@link #onRestart} when |
| * the activity had been stopped, but is now again being displayed to the |
| * user. It will be followed by {@link #onResume}. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onCreate |
| * @see #onStop |
| * @see #onResume |
| */ |
| protected void onStart() { |
| mCalled = true; |
| |
| if (!mLoadersStarted) { |
| mLoadersStarted = true; |
| if (mLoaderManager != null) { |
| mLoaderManager.doStart(); |
| } else if (!mCheckedForLoaderManager) { |
| mLoaderManager = getLoaderManager(-1, mLoadersStarted, false); |
| } |
| mCheckedForLoaderManager = true; |
| } |
| } |
| |
| /** |
| * Called after {@link #onStop} when the current activity is being |
| * re-displayed to the user (the user has navigated back to it). It will |
| * be followed by {@link #onStart} and then {@link #onResume}. |
| * |
| * <p>For activities that are using raw {@link Cursor} objects (instead of |
| * creating them through |
| * {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, |
| * this is usually the place |
| * where the cursor should be requeried (because you had deactivated it in |
| * {@link #onStop}. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onStop |
| * @see #onStart |
| * @see #onResume |
| */ |
| protected void onRestart() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or |
| * {@link #onPause}, for your activity to start interacting with the user. |
| * This is a good place to begin animations, open exclusive-access devices |
| * (such as the camera), etc. |
| * |
| * <p>Keep in mind that onResume is not the best indicator that your activity |
| * is visible to the user; a system window such as the keyguard may be in |
| * front. Use {@link #onWindowFocusChanged} to know for certain that your |
| * activity is visible to the user (for example, to resume a game). |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onRestoreInstanceState |
| * @see #onRestart |
| * @see #onPostResume |
| * @see #onPause |
| */ |
| protected void onResume() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when activity resume is complete (after {@link #onResume} has |
| * been called). Applications will generally not implement this method; |
| * it is intended for system classes to do final setup after application |
| * resume code has run. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onResume |
| */ |
| protected void onPostResume() { |
| final Window win = getWindow(); |
| if (win != null) win.makeActive(); |
| mCalled = true; |
| } |
| |
| /** |
| * This is called for activities that set launchMode to "singleTop" in |
| * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} |
| * flag when calling {@link #startActivity}. In either case, when the |
| * activity is re-launched while at the top of the activity stack instead |
| * of a new instance of the activity being started, onNewIntent() will be |
| * called on the existing instance with the Intent that was used to |
| * re-launch it. |
| * |
| * <p>An activity will always be paused before receiving a new intent, so |
| * you can count on {@link #onResume} being called after this method. |
| * |
| * <p>Note that {@link #getIntent} still returns the original Intent. You |
| * can use {@link #setIntent} to update it to this new Intent. |
| * |
| * @param intent The new intent that was started for the activity. |
| * |
| * @see #getIntent |
| * @see #setIntent |
| * @see #onResume |
| */ |
| protected void onNewIntent(Intent intent) { |
| } |
| |
| /** |
| * The hook for {@link ActivityThread} to save the state of this activity. |
| * |
| * Calls {@link #onSaveInstanceState(android.os.Bundle)} |
| * and {@link #saveManagedDialogs(android.os.Bundle)}. |
| * |
| * @param outState The bundle to save the state to. |
| */ |
| final void performSaveInstanceState(Bundle outState) { |
| onSaveInstanceState(outState); |
| saveManagedDialogs(outState); |
| } |
| |
| /** |
| * Called to retrieve per-instance state from an activity before being killed |
| * so that the state can be restored in {@link #onCreate} or |
| * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method |
| * will be passed to both). |
| * |
| * <p>This method is called before an activity may be killed so that when it |
| * comes back some time in the future it can restore its state. For example, |
| * if activity B is launched in front of activity A, and at some point activity |
| * A is killed to reclaim resources, activity A will have a chance to save the |
| * current state of its user interface via this method so that when the user |
| * returns to activity A, the state of the user interface can be restored |
| * via {@link #onCreate} or {@link #onRestoreInstanceState}. |
| * |
| * <p>Do not confuse this method with activity lifecycle callbacks such as |
| * {@link #onPause}, which is always called when an activity is being placed |
| * in the background or on its way to destruction, or {@link #onStop} which |
| * is called before destruction. One example of when {@link #onPause} and |
| * {@link #onStop} is called and not this method is when a user navigates back |
| * from activity B to activity A: there is no need to call {@link #onSaveInstanceState} |
| * on B because that particular instance will never be restored, so the |
| * system avoids calling it. An example when {@link #onPause} is called and |
| * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: |
| * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't |
| * killed during the lifetime of B since the state of the user interface of |
| * A will stay intact. |
| * |
| * <p>The default implementation takes care of most of the UI per-instance |
| * state for you by calling {@link android.view.View#onSaveInstanceState()} on each |
| * view in the hierarchy that has an id, and by saving the id of the currently |
| * focused view (all of which is restored by the default implementation of |
| * {@link #onRestoreInstanceState}). If you override this method to save additional |
| * information not captured by each individual view, you will likely want to |
| * call through to the default implementation, otherwise be prepared to save |
| * all of the state of each view yourself. |
| * |
| * <p>If called, this method will occur before {@link #onStop}. There are |
| * no guarantees about whether it will occur before or after {@link #onPause}. |
| * |
| * @param outState Bundle in which to place your saved state. |
| * |
| * @see #onCreate |
| * @see #onRestoreInstanceState |
| * @see #onPause |
| */ |
| protected void onSaveInstanceState(Bundle outState) { |
| outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); |
| Parcelable p = mFragments.saveAllState(); |
| if (p != null) { |
| outState.putParcelable(FRAGMENTS_TAG, p); |
| } |
| } |
| |
| /** |
| * Save the state of any managed dialogs. |
| * |
| * @param outState place to store the saved state. |
| */ |
| private void saveManagedDialogs(Bundle outState) { |
| if (mManagedDialogs == null) { |
| return; |
| } |
| |
| final int numDialogs = mManagedDialogs.size(); |
| if (numDialogs == 0) { |
| return; |
| } |
| |
| Bundle dialogState = new Bundle(); |
| |
| int[] ids = new int[mManagedDialogs.size()]; |
| |
| // save each dialog's bundle, gather the ids |
| for (int i = 0; i < numDialogs; i++) { |
| final int key = mManagedDialogs.keyAt(i); |
| ids[i] = key; |
| final ManagedDialog md = mManagedDialogs.valueAt(i); |
| dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); |
| if (md.mArgs != null) { |
| dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); |
| } |
| } |
| |
| dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); |
| outState.putBundle(SAVED_DIALOGS_TAG, dialogState); |
| } |
| |
| |
| /** |
| * Called as part of the activity lifecycle when an activity is going into |
| * the background, but has not (yet) been killed. The counterpart to |
| * {@link #onResume}. |
| * |
| * <p>When activity B is launched in front of activity A, this callback will |
| * be invoked on A. B will not be created until A's {@link #onPause} returns, |
| * so be sure to not do anything lengthy here. |
| * |
| * <p>This callback is mostly used for saving any persistent state the |
| * activity is editing, to present a "edit in place" model to the user and |
| * making sure nothing is lost if there are not enough resources to start |
| * the new activity without first killing this one. This is also a good |
| * place to do things like stop animations and other things that consume a |
| * noticeable mount of CPU in order to make the switch to the next activity |
| * as fast as possible, or to close resources that are exclusive access |
| * such as the camera. |
| * |
| * <p>In situations where the system needs more memory it may kill paused |
| * processes to reclaim resources. Because of this, you should be sure |
| * that all of your state is saved by the time you return from |
| * this function. In general {@link #onSaveInstanceState} is used to save |
| * per-instance state in the activity and this method is used to store |
| * global persistent data (in content providers, files, etc.) |
| * |
| * <p>After receiving this call you will usually receive a following call |
| * to {@link #onStop} (after the next activity has been resumed and |
| * displayed), however in some cases there will be a direct call back to |
| * {@link #onResume} without going through the stopped state. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onResume |
| * @see #onSaveInstanceState |
| * @see #onStop |
| */ |
| protected void onPause() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called as part of the activity lifecycle when an activity is about to go |
| * into the background as the result of user choice. For example, when the |
| * user presses the Home key, {@link #onUserLeaveHint} will be called, but |
| * when an incoming phone call causes the in-call Activity to be automatically |
| * brought to the foreground, {@link #onUserLeaveHint} will not be called on |
| * the activity being interrupted. In cases when it is invoked, this method |
| * is called right before the activity's {@link #onPause} callback. |
| * |
| * <p>This callback and {@link #onUserInteraction} are intended to help |
| * activities manage status bar notifications intelligently; specifically, |
| * for helping activities determine the proper time to cancel a notfication. |
| * |
| * @see #onUserInteraction() |
| */ |
| protected void onUserLeaveHint() { |
| } |
| |
| /** |
| * Generate a new thumbnail for this activity. This method is called before |
| * pausing the activity, and should draw into <var>outBitmap</var> the |
| * imagery for the desired thumbnail in the dimensions of that bitmap. It |
| * can use the given <var>canvas</var>, which is configured to draw into the |
| * bitmap, for rendering if desired. |
| * |
| * <p>The default implementation returns fails and does not draw a thumbnail; |
| * this will result in the platform creating its own thumbnail if needed. |
| * |
| * @param outBitmap The bitmap to contain the thumbnail. |
| * @param canvas Can be used to render into the bitmap. |
| * |
| * @return Return true if you have drawn into the bitmap; otherwise after |
| * you return it will be filled with a default thumbnail. |
| * |
| * @see #onCreateDescription |
| * @see #onSaveInstanceState |
| * @see #onPause |
| */ |
| public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) { |
| return false; |
| } |
| |
| /** |
| * Generate a new description for this activity. This method is called |
| * before pausing the activity and can, if desired, return some textual |
| * description of its current state to be displayed to the user. |
| * |
| * <p>The default implementation returns null, which will cause you to |
| * inherit the description from the previous activity. If all activities |
| * return null, generally the label of the top activity will be used as the |
| * description. |
| * |
| * @return A description of what the user is doing. It should be short and |
| * sweet (only a few words). |
| * |
| * @see #onCreateThumbnail |
| * @see #onSaveInstanceState |
| * @see #onPause |
| */ |
| public CharSequence onCreateDescription() { |
| return null; |
| } |
| |
| /** |
| * Called when you are no longer visible to the user. You will next |
| * receive either {@link #onRestart}, {@link #onDestroy}, or nothing, |
| * depending on later user activity. |
| * |
| * <p>Note that this method may never be called, in low memory situations |
| * where the system does not have enough memory to keep your activity's |
| * process running after its {@link #onPause} method is called. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onRestart |
| * @see #onResume |
| * @see #onSaveInstanceState |
| * @see #onDestroy |
| */ |
| protected void onStop() { |
| mCalled = true; |
| } |
| |
| /** |
| * Perform any final cleanup before an activity is destroyed. This can |
| * happen either because the activity is finishing (someone called |
| * {@link #finish} on it, or because the system is temporarily destroying |
| * this instance of the activity to save space. You can distinguish |
| * between these two scenarios with the {@link #isFinishing} method. |
| * |
| * <p><em>Note: do not count on this method being called as a place for |
| * saving data! For example, if an activity is editing data in a content |
| * provider, those edits should be committed in either {@link #onPause} or |
| * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to |
| * free resources like threads that are associated with an activity, so |
| * that a destroyed activity does not leave such things around while the |
| * rest of its application is still running. There are situations where |
| * the system will simply kill the activity's hosting process without |
| * calling this method (or any others) in it, so it should not be used to |
| * do things that are intended to remain around after the process goes |
| * away. |
| * |
| * <p><em>Derived classes must call through to the super class's |
| * implementation of this method. If they do not, an exception will be |
| * thrown.</em></p> |
| * |
| * @see #onPause |
| * @see #onStop |
| * @see #finish |
| * @see #isFinishing |
| */ |
| protected void onDestroy() { |
| mCalled = true; |
| |
| // dismiss any dialogs we are managing. |
| if (mManagedDialogs != null) { |
| final int numDialogs = mManagedDialogs.size(); |
| for (int i = 0; i < numDialogs; i++) { |
| final ManagedDialog md = mManagedDialogs.valueAt(i); |
| if (md.mDialog.isShowing()) { |
| md.mDialog.dismiss(); |
| } |
| } |
| mManagedDialogs = null; |
| } |
| |
| // close any cursors we are managing. |
| synchronized (mManagedCursors) { |
| int numCursors = mManagedCursors.size(); |
| for (int i = 0; i < numCursors; i++) { |
| ManagedCursor c = mManagedCursors.get(i); |
| if (c != null) { |
| c.mCursor.close(); |
| } |
| } |
| mManagedCursors.clear(); |
| } |
| |
| // Close any open search dialog |
| if (mSearchManager != null) { |
| mSearchManager.stopSearch(); |
| } |
| } |
| |
| /** |
| * Called by the system when the device configuration changes while your |
| * activity is running. Note that this will <em>only</em> be called if |
| * you have selected configurations you would like to handle with the |
| * {@link android.R.attr#configChanges} attribute in your manifest. If |
| * any configuration change occurs that is not selected to be reported |
| * by that attribute, then instead of reporting it the system will stop |
| * and restart the activity (to have it launched with the new |
| * configuration). |
| * |
| * <p>At the time that this function has been called, your Resources |
| * object will have been updated to return resource values matching the |
| * new configuration. |
| * |
| * @param newConfig The new device configuration. |
| */ |
| public void onConfigurationChanged(Configuration newConfig) { |
| mCalled = true; |
| |
| mFragments.dispatchConfigurationChanged(newConfig); |
| |
| if (mWindow != null) { |
| // Pass the configuration changed event to the window |
| mWindow.onConfigurationChanged(newConfig); |
| } |
| } |
| |
| /** |
| * If this activity is being destroyed because it can not handle a |
| * configuration parameter being changed (and thus its |
| * {@link #onConfigurationChanged(Configuration)} method is |
| * <em>not</em> being called), then you can use this method to discover |
| * the set of changes that have occurred while in the process of being |
| * destroyed. Note that there is no guarantee that these will be |
| * accurate (other changes could have happened at any time), so you should |
| * only use this as an optimization hint. |
| * |
| * @return Returns a bit field of the configuration parameters that are |
| * changing, as defined by the {@link android.content.res.Configuration} |
| * class. |
| */ |
| public int getChangingConfigurations() { |
| return mConfigChangeFlags; |
| } |
| |
| /** |
| * Retrieve the non-configuration instance data that was previously |
| * returned by {@link #onRetainNonConfigurationInstance()}. This will |
| * be available from the initial {@link #onCreate} and |
| * {@link #onStart} calls to the new instance, allowing you to extract |
| * any useful dynamic state from the previous instance. |
| * |
| * <p>Note that the data you retrieve here should <em>only</em> be used |
| * as an optimization for handling configuration changes. You should always |
| * be able to handle getting a null pointer back, and an activity must |
| * still be able to restore itself to its previous state (through the |
| * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this |
| * function returns null. |
| * |
| * @return Returns the object previously returned by |
| * {@link #onRetainNonConfigurationInstance()}. |
| */ |
| public Object getLastNonConfigurationInstance() { |
| return mLastNonConfigurationInstances != null |
| ? mLastNonConfigurationInstances.activity : null; |
| } |
| |
| /** |
| * Called by the system, as part of destroying an |
| * activity due to a configuration change, when it is known that a new |
| * instance will immediately be created for the new configuration. You |
| * can return any object you like here, including the activity instance |
| * itself, which can later be retrieved by calling |
| * {@link #getLastNonConfigurationInstance()} in the new activity |
| * instance. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using a {@link Fragment} with |
| * {@link Fragment#setRetainInstance(boolean) |
| * Fragment.setRetainInstance(boolean}.</em> |
| * |
| * <p>This function is called purely as an optimization, and you must |
| * not rely on it being called. When it is called, a number of guarantees |
| * will be made to help optimize configuration switching: |
| * <ul> |
| * <li> The function will be called between {@link #onStop} and |
| * {@link #onDestroy}. |
| * <li> A new instance of the activity will <em>always</em> be immediately |
| * created after this one's {@link #onDestroy()} is called. In particular, |
| * <em>no</em> messages will be dispatched during this time (when the returned |
| * object does not have an activity to be associated with). |
| * <li> The object you return here will <em>always</em> be available from |
| * the {@link #getLastNonConfigurationInstance()} method of the following |
| * activity instance as described there. |
| * </ul> |
| * |
| * <p>These guarantees are designed so that an activity can use this API |
| * to propagate extensive state from the old to new activity instance, from |
| * loaded bitmaps, to network connections, to evenly actively running |
| * threads. Note that you should <em>not</em> propagate any data that |
| * may change based on the configuration, including any data loaded from |
| * resources such as strings, layouts, or drawables. |
| * |
| * <p>The guarantee of no message handling during the switch to the next |
| * activity simplifies use with active objects. For example if your retained |
| * state is an {@link android.os.AsyncTask} you are guaranteed that its |
| * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will |
| * not be called from the call here until you execute the next instance's |
| * {@link #onCreate(Bundle)}. (Note however that there is of course no such |
| * guarantee for {@link android.os.AsyncTask#doInBackground} since that is |
| * running in a separate thread.) |
| * |
| * @return Return any Object holding the desired state to propagate to the |
| * next activity instance. |
| */ |
| public Object onRetainNonConfigurationInstance() { |
| return null; |
| } |
| |
| /** |
| * Retrieve the non-configuration instance data that was previously |
| * returned by {@link #onRetainNonConfigurationChildInstances()}. This will |
| * be available from the initial {@link #onCreate} and |
| * {@link #onStart} calls to the new instance, allowing you to extract |
| * any useful dynamic state from the previous instance. |
| * |
| * <p>Note that the data you retrieve here should <em>only</em> be used |
| * as an optimization for handling configuration changes. You should always |
| * be able to handle getting a null pointer back, and an activity must |
| * still be able to restore itself to its previous state (through the |
| * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this |
| * function returns null. |
| * |
| * @return Returns the object previously returned by |
| * {@link #onRetainNonConfigurationChildInstances()} |
| */ |
| HashMap<String, Object> getLastNonConfigurationChildInstances() { |
| return mLastNonConfigurationInstances != null |
| ? mLastNonConfigurationInstances.children : null; |
| } |
| |
| /** |
| * This method is similar to {@link #onRetainNonConfigurationInstance()} except that |
| * it should return either a mapping from child activity id strings to arbitrary objects, |
| * or null. This method is intended to be used by Activity framework subclasses that control a |
| * set of child activities, such as ActivityGroup. The same guarantees and restrictions apply |
| * as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null. |
| */ |
| HashMap<String,Object> onRetainNonConfigurationChildInstances() { |
| return null; |
| } |
| |
| NonConfigurationInstances retainNonConfigurationInstances() { |
| Object activity = onRetainNonConfigurationInstance(); |
| HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); |
| ArrayList<Fragment> fragments = mFragments.retainNonConfig(); |
| boolean retainLoaders = false; |
| if (mAllLoaderManagers != null) { |
| // prune out any loader managers that were already stopped and so |
| // have nothing useful to retain. |
| for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { |
| LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i); |
| if (lm.mRetaining) { |
| retainLoaders = true; |
| } else { |
| lm.doDestroy(); |
| mAllLoaderManagers.removeAt(i); |
| } |
| } |
| } |
| if (activity == null && children == null && fragments == null && !retainLoaders) { |
| return null; |
| } |
| |
| NonConfigurationInstances nci = new NonConfigurationInstances(); |
| nci.activity = activity; |
| nci.children = children; |
| nci.fragments = fragments; |
| nci.loaders = mAllLoaderManagers; |
| return nci; |
| } |
| |
| public void onLowMemory() { |
| mCalled = true; |
| mFragments.dispatchLowMemory(); |
| } |
| |
| /** |
| * Return the FragmentManager for interacting with fragments associated |
| * with this activity. |
| */ |
| public FragmentManager getFragmentManager() { |
| return mFragments; |
| } |
| |
| void invalidateFragmentIndex(int index) { |
| //Log.v(TAG, "invalidateFragmentIndex: index=" + index); |
| if (mAllLoaderManagers != null) { |
| LoaderManagerImpl lm = mAllLoaderManagers.get(index); |
| if (lm != null) { |
| lm.doDestroy(); |
| } |
| mAllLoaderManagers.remove(index); |
| } |
| } |
| |
| /** |
| * Called when a Fragment is being attached to this activity, immediately |
| * after the call to its {@link Fragment#onAttach Fragment.onAttach()} |
| * method and before {@link Fragment#onCreate Fragment.onCreate()}. |
| */ |
| public void onAttachFragment(Fragment fragment) { |
| } |
| |
| /** |
| * Wrapper around |
| * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} |
| * that gives the resulting {@link Cursor} to call |
| * {@link #startManagingCursor} so that the activity will manage its |
| * lifecycle for you. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using {@link LoaderManager} instead, available |
| * via {@link #getLoaderManager()}.</em> |
| * |
| * @param uri The URI of the content provider to query. |
| * @param projection List of columns to return. |
| * @param selection SQL WHERE clause. |
| * @param sortOrder SQL ORDER BY clause. |
| * |
| * @return The Cursor that was returned by query(). |
| * |
| * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) |
| * @see #startManagingCursor |
| * @hide |
| * |
| * @deprecated Use {@link CursorLoader} instead. |
| */ |
| @Deprecated |
| public final Cursor managedQuery(Uri uri, String[] projection, String selection, |
| String sortOrder) { |
| Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); |
| if (c != null) { |
| startManagingCursor(c); |
| } |
| return c; |
| } |
| |
| /** |
| * Wrapper around |
| * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} |
| * that gives the resulting {@link Cursor} to call |
| * {@link #startManagingCursor} so that the activity will manage its |
| * lifecycle for you. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using {@link LoaderManager} instead, available |
| * via {@link #getLoaderManager()}.</em> |
| * |
| * @param uri The URI of the content provider to query. |
| * @param projection List of columns to return. |
| * @param selection SQL WHERE clause. |
| * @param selectionArgs The arguments to selection, if any ?s are pesent |
| * @param sortOrder SQL ORDER BY clause. |
| * |
| * @return The Cursor that was returned by query(). |
| * |
| * @see ContentResolver#query(android.net.Uri , String[], String, String[], String) |
| * @see #startManagingCursor |
| * |
| * @deprecated Use {@link CursorLoader} instead. |
| */ |
| @Deprecated |
| public final Cursor managedQuery(Uri uri, String[] projection, String selection, |
| String[] selectionArgs, String sortOrder) { |
| Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); |
| if (c != null) { |
| startManagingCursor(c); |
| } |
| return c; |
| } |
| |
| /** |
| * This method allows the activity to take care of managing the given |
| * {@link Cursor}'s lifecycle for you based on the activity's lifecycle. |
| * That is, when the activity is stopped it will automatically call |
| * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted |
| * it will call {@link Cursor#requery} for you. When the activity is |
| * destroyed, all managed Cursors will be closed automatically. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using {@link LoaderManager} instead, available |
| * via {@link #getLoaderManager()}.</em> |
| * |
| * @param c The Cursor to be managed. |
| * |
| * @see #managedQuery(android.net.Uri , String[], String, String[], String) |
| * @see #stopManagingCursor |
| * |
| * @deprecated Use {@link CursorLoader} instead. |
| */ |
| @Deprecated |
| public void startManagingCursor(Cursor c) { |
| synchronized (mManagedCursors) { |
| mManagedCursors.add(new ManagedCursor(c)); |
| } |
| } |
| |
| /** |
| * Given a Cursor that was previously given to |
| * {@link #startManagingCursor}, stop the activity's management of that |
| * cursor. |
| * |
| * @param c The Cursor that was being managed. |
| * |
| * @see #startManagingCursor |
| * |
| * @deprecated Use {@link CursorLoader} instead. |
| */ |
| @Deprecated |
| public void stopManagingCursor(Cursor c) { |
| synchronized (mManagedCursors) { |
| final int N = mManagedCursors.size(); |
| for (int i=0; i<N; i++) { |
| ManagedCursor mc = mManagedCursors.get(i); |
| if (mc.mCursor == c) { |
| mManagedCursors.remove(i); |
| break; |
| } |
| } |
| } |
| } |
| |
| /** |
| * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} |
| * this is a no-op. |
| * @hide |
| */ |
| @Deprecated |
| public void setPersistent(boolean isPersistent) { |
| } |
| |
| /** |
| * Finds a view that was identified by the id attribute from the XML that |
| * was processed in {@link #onCreate}. |
| * |
| * @return The view if found or null otherwise. |
| */ |
| public View findViewById(int id) { |
| return getWindow().findViewById(id); |
| } |
| |
| /** |
| * Retrieve a reference to this activity's ActionBar. |
| * |
| * @return The Activity's ActionBar, or null if it does not have one. |
| */ |
| public ActionBar getActionBar() { |
| initActionBar(); |
| return mActionBar; |
| } |
| |
| /** |
| * Creates a new ActionBar, locates the inflated ActionBarView, |
| * initializes the ActionBar with the view, and sets mActionBar. |
| */ |
| private void initActionBar() { |
| Window window = getWindow(); |
| if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { |
| return; |
| } |
| |
| mActionBar = new ActionBarImpl(this); |
| } |
| |
| /** |
| * Set the activity content from a layout resource. The resource will be |
| * inflated, adding all top-level views to the activity. |
| * |
| * @param layoutResID Resource ID to be inflated. |
| * |
| * @see #setContentView(android.view.View) |
| * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) |
| */ |
| public void setContentView(int layoutResID) { |
| getWindow().setContentView(layoutResID); |
| initActionBar(); |
| } |
| |
| /** |
| * Set the activity content to an explicit view. This view is placed |
| * directly into the activity's view hierarchy. It can itself be a complex |
| * view hierarchy. When calling this method, the layout parameters of the |
| * specified view are ignored. Both the width and the height of the view are |
| * set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use |
| * your own layout parameters, invoke |
| * {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} |
| * instead. |
| * |
| * @param view The desired content to display. |
| * |
| * @see #setContentView(int) |
| * @see #setContentView(android.view.View, android.view.ViewGroup.LayoutParams) |
| */ |
| public void setContentView(View view) { |
| getWindow().setContentView(view); |
| initActionBar(); |
| } |
| |
| /** |
| * Set the activity content to an explicit view. This view is placed |
| * directly into the activity's view hierarchy. It can itself be a complex |
| * view hierarchy. |
| * |
| * @param view The desired content to display. |
| * @param params Layout parameters for the view. |
| * |
| * @see #setContentView(android.view.View) |
| * @see #setContentView(int) |
| */ |
| public void setContentView(View view, ViewGroup.LayoutParams params) { |
| getWindow().setContentView(view, params); |
| initActionBar(); |
| } |
| |
| /** |
| * Add an additional content view to the activity. Added after any existing |
| * ones in the activity -- existing views are NOT removed. |
| * |
| * @param view The desired content to display. |
| * @param params Layout parameters for the view. |
| */ |
| public void addContentView(View view, ViewGroup.LayoutParams params) { |
| getWindow().addContentView(view, params); |
| initActionBar(); |
| } |
| |
| /** |
| * Sets whether this activity is finished when touched outside its window's |
| * bounds. |
| */ |
| public void setFinishOnTouchOutside(boolean finish) { |
| mWindow.setCloseOnTouchOutside(finish); |
| } |
| |
| /** |
| * Use with {@link #setDefaultKeyMode} to turn off default handling of |
| * keys. |
| * |
| * @see #setDefaultKeyMode |
| */ |
| static public final int DEFAULT_KEYS_DISABLE = 0; |
| /** |
| * Use with {@link #setDefaultKeyMode} to launch the dialer during default |
| * key handling. |
| * |
| * @see #setDefaultKeyMode |
| */ |
| static public final int DEFAULT_KEYS_DIALER = 1; |
| /** |
| * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in |
| * default key handling. |
| * |
| * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts. |
| * |
| * @see #setDefaultKeyMode |
| */ |
| static public final int DEFAULT_KEYS_SHORTCUT = 2; |
| /** |
| * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes |
| * will start an application-defined search. (If the application or activity does not |
| * actually define a search, the the keys will be ignored.) |
| * |
| * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. |
| * |
| * @see #setDefaultKeyMode |
| */ |
| static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3; |
| |
| /** |
| * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes |
| * will start a global search (typically web search, but some platforms may define alternate |
| * methods for global search) |
| * |
| * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details. |
| * |
| * @see #setDefaultKeyMode |
| */ |
| static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4; |
| |
| /** |
| * Select the default key handling for this activity. This controls what |
| * will happen to key events that are not otherwise handled. The default |
| * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the |
| * floor. Other modes allow you to launch the dialer |
| * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options |
| * menu without requiring the menu key be held down |
| * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} |
| * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}). |
| * |
| * <p>Note that the mode selected here does not impact the default |
| * handling of system keys, such as the "back" and "menu" keys, and your |
| * activity and its views always get a first chance to receive and handle |
| * all application keys. |
| * |
| * @param mode The desired default key mode constant. |
| * |
| * @see #DEFAULT_KEYS_DISABLE |
| * @see #DEFAULT_KEYS_DIALER |
| * @see #DEFAULT_KEYS_SHORTCUT |
| * @see #DEFAULT_KEYS_SEARCH_LOCAL |
| * @see #DEFAULT_KEYS_SEARCH_GLOBAL |
| * @see #onKeyDown |
| */ |
| public final void setDefaultKeyMode(int mode) { |
| mDefaultKeyMode = mode; |
| |
| // Some modes use a SpannableStringBuilder to track & dispatch input events |
| // This list must remain in sync with the switch in onKeyDown() |
| switch (mode) { |
| case DEFAULT_KEYS_DISABLE: |
| case DEFAULT_KEYS_SHORTCUT: |
| mDefaultKeySsb = null; // not used in these modes |
| break; |
| case DEFAULT_KEYS_DIALER: |
| case DEFAULT_KEYS_SEARCH_LOCAL: |
| case DEFAULT_KEYS_SEARCH_GLOBAL: |
| mDefaultKeySsb = new SpannableStringBuilder(); |
| Selection.setSelection(mDefaultKeySsb,0); |
| break; |
| default: |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| /** |
| * Called when a key was pressed down and not handled by any of the views |
| * inside of the activity. So, for example, key presses while the cursor |
| * is inside a TextView will not trigger the event (unless it is a navigation |
| * to another object) because TextView handles its own key presses. |
| * |
| * <p>If the focused view didn't want this event, this method is called. |
| * |
| * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} |
| * by calling {@link #onBackPressed()}, though the behavior varies based |
| * on the application compatibility mode: for |
| * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, |
| * it will set up the dispatch to call {@link #onKeyUp} where the action |
| * will be performed; for earlier applications, it will perform the |
| * action immediately in on-down, as those versions of the platform |
| * behaved. |
| * |
| * <p>Other additional default key handling may be performed |
| * if configured with {@link #setDefaultKeyMode}. |
| * |
| * @return Return <code>true</code> to prevent this event from being propagated |
| * further, or <code>false</code> to indicate that you have not handled |
| * this event and it should continue to be propagated. |
| * @see #onKeyUp |
| * @see android.view.KeyEvent |
| */ |
| public boolean onKeyDown(int keyCode, KeyEvent event) { |
| if (keyCode == KeyEvent.KEYCODE_BACK) { |
| if (getApplicationInfo().targetSdkVersion |
| >= Build.VERSION_CODES.ECLAIR) { |
| event.startTracking(); |
| } else { |
| onBackPressed(); |
| } |
| return true; |
| } |
| |
| if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { |
| return false; |
| } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { |
| if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, |
| keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { |
| return true; |
| } |
| return false; |
| } else { |
| // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* |
| boolean clearSpannable = false; |
| boolean handled; |
| if ((event.getRepeatCount() != 0) || event.isSystem()) { |
| clearSpannable = true; |
| handled = false; |
| } else { |
| handled = TextKeyListener.getInstance().onKeyDown( |
| null, mDefaultKeySsb, keyCode, event); |
| if (handled && mDefaultKeySsb.length() > 0) { |
| // something useable has been typed - dispatch it now. |
| |
| final String str = mDefaultKeySsb.toString(); |
| clearSpannable = true; |
| |
| switch (mDefaultKeyMode) { |
| case DEFAULT_KEYS_DIALER: |
| Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| startActivity(intent); |
| break; |
| case DEFAULT_KEYS_SEARCH_LOCAL: |
| startSearch(str, false, null, false); |
| break; |
| case DEFAULT_KEYS_SEARCH_GLOBAL: |
| startSearch(str, false, null, true); |
| break; |
| } |
| } |
| } |
| if (clearSpannable) { |
| mDefaultKeySsb.clear(); |
| mDefaultKeySsb.clearSpans(); |
| Selection.setSelection(mDefaultKeySsb,0); |
| } |
| return handled; |
| } |
| } |
| |
| /** |
| * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) |
| * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle |
| * the event). |
| */ |
| public boolean onKeyLongPress(int keyCode, KeyEvent event) { |
| return false; |
| } |
| |
| /** |
| * Called when a key was released and not handled by any of the views |
| * inside of the activity. So, for example, key presses while the cursor |
| * is inside a TextView will not trigger the event (unless it is a navigation |
| * to another object) because TextView handles its own key presses. |
| * |
| * <p>The default implementation handles KEYCODE_BACK to stop the activity |
| * and go back. |
| * |
| * @return Return <code>true</code> to prevent this event from being propagated |
| * further, or <code>false</code> to indicate that you have not handled |
| * this event and it should continue to be propagated. |
| * @see #onKeyDown |
| * @see KeyEvent |
| */ |
| public boolean onKeyUp(int keyCode, KeyEvent event) { |
| if (getApplicationInfo().targetSdkVersion |
| >= Build.VERSION_CODES.ECLAIR) { |
| if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() |
| && !event.isCanceled()) { |
| onBackPressed(); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) |
| * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle |
| * the event). |
| */ |
| public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { |
| return false; |
| } |
| |
| /** |
| * Called when the activity has detected the user's press of the back |
| * key. The default implementation simply finishes the current activity, |
| * but you can override this to do whatever you want. |
| */ |
| public void onBackPressed() { |
| if (!mFragments.popBackStackImmediate()) { |
| finish(); |
| } |
| } |
| |
| /** |
| * Called when a key shortcut event is not handled by any of the views in the Activity. |
| * Override this method to implement global key shortcuts for the Activity. |
| * Key shortcuts can also be implemented by setting the |
| * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items. |
| * |
| * @param keyCode The value in event.getKeyCode(). |
| * @param event Description of the key event. |
| * @return True if the key shortcut was handled. |
| */ |
| public boolean onKeyShortcut(int keyCode, KeyEvent event) { |
| return false; |
| } |
| |
| /** |
| * Called when a touch screen event was not handled by any of the views |
| * under it. This is most useful to process touch events that happen |
| * outside of your window bounds, where there is no view to receive it. |
| * |
| * @param event The touch screen event being processed. |
| * |
| * @return Return true if you have consumed the event, false if you haven't. |
| * The default implementation always returns false. |
| */ |
| public boolean onTouchEvent(MotionEvent event) { |
| if (mWindow.shouldCloseOnTouch(this, event)) { |
| finish(); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Called when the trackball was moved and not handled by any of the |
| * views inside of the activity. So, for example, if the trackball moves |
| * while focus is on a button, you will receive a call here because |
| * buttons do not normally do anything with trackball events. The call |
| * here happens <em>before</em> trackball movements are converted to |
| * DPAD key events, which then get sent back to the view hierarchy, and |
| * will be processed at the point for things like focus navigation. |
| * |
| * @param event The trackball event being processed. |
| * |
| * @return Return true if you have consumed the event, false if you haven't. |
| * The default implementation always returns false. |
| */ |
| public boolean onTrackballEvent(MotionEvent event) { |
| return false; |
| } |
| |
| /** |
| * Called whenever a key, touch, or trackball event is dispatched to the |
| * activity. Implement this method if you wish to know that the user has |
| * interacted with the device in some way while your activity is running. |
| * This callback and {@link #onUserLeaveHint} are intended to help |
| * activities manage status bar notifications intelligently; specifically, |
| * for helping activities determine the proper time to cancel a notfication. |
| * |
| * <p>All calls to your activity's {@link #onUserLeaveHint} callback will |
| * be accompanied by calls to {@link #onUserInteraction}. This |
| * ensures that your activity will be told of relevant user activity such |
| * as pulling down the notification pane and touching an item there. |
| * |
| * <p>Note that this callback will be invoked for the touch down action |
| * that begins a touch gesture, but may not be invoked for the touch-moved |
| * and touch-up actions that follow. |
| * |
| * @see #onUserLeaveHint() |
| */ |
| public void onUserInteraction() { |
| } |
| |
| public void onWindowAttributesChanged(WindowManager.LayoutParams params) { |
| // Update window manager if: we have a view, that view is |
| // attached to its parent (which will be a RootView), and |
| // this activity is not embedded. |
| if (mParent == null) { |
| View decor = mDecor; |
| if (decor != null && decor.getParent() != null) { |
| getWindowManager().updateViewLayout(decor, params); |
| } |
| } |
| } |
| |
| public void onContentChanged() { |
| } |
| |
| /** |
| * Called when the current {@link Window} of the activity gains or loses |
| * focus. This is the best indicator of whether this activity is visible |
| * to the user. The default implementation clears the key tracking |
| * state, so should always be called. |
| * |
| * <p>Note that this provides information about global focus state, which |
| * is managed independently of activity lifecycles. As such, while focus |
| * changes will generally have some relation to lifecycle changes (an |
| * activity that is stopped will not generally get window focus), you |
| * should not rely on any particular order between the callbacks here and |
| * those in the other lifecycle methods such as {@link #onResume}. |
| * |
| * <p>As a general rule, however, a resumed activity will have window |
| * focus... unless it has displayed other dialogs or popups that take |
| * input focus, in which case the activity itself will not have focus |
| * when the other windows have it. Likewise, the system may display |
| * system-level windows (such as the status bar notification panel or |
| * a system alert) which will temporarily take window input focus without |
| * pausing the foreground activity. |
| * |
| * @param hasFocus Whether the window of this activity has focus. |
| * |
| * @see #hasWindowFocus() |
| * @see #onResume |
| * @see View#onWindowFocusChanged(boolean) |
| */ |
| public void onWindowFocusChanged(boolean hasFocus) { |
| } |
| |
| /** |
| * Called when the main window associated with the activity has been |
| * attached to the window manager. |
| * See {@link View#onAttachedToWindow() View.onAttachedToWindow()} |
| * for more information. |
| * @see View#onAttachedToWindow |
| */ |
| public void onAttachedToWindow() { |
| } |
| |
| /** |
| * Called when the main window associated with the activity has been |
| * detached from the window manager. |
| * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} |
| * for more information. |
| * @see View#onDetachedFromWindow |
| */ |
| public void onDetachedFromWindow() { |
| } |
| |
| /** |
| * Returns true if this activity's <em>main</em> window currently has window focus. |
| * Note that this is not the same as the view itself having focus. |
| * |
| * @return True if this activity's main window currently has window focus. |
| * |
| * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams) |
| */ |
| public boolean hasWindowFocus() { |
| Window w = getWindow(); |
| if (w != null) { |
| View d = w.getDecorView(); |
| if (d != null) { |
| return d.hasWindowFocus(); |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Called to process key events. You can override this to intercept all |
| * key events before they are dispatched to the window. Be sure to call |
| * this implementation for key events that should be handled normally. |
| * |
| * @param event The key event. |
| * |
| * @return boolean Return true if this event was consumed. |
| */ |
| public boolean dispatchKeyEvent(KeyEvent event) { |
| onUserInteraction(); |
| Window win = getWindow(); |
| if (win.superDispatchKeyEvent(event)) { |
| return true; |
| } |
| View decor = mDecor; |
| if (decor == null) decor = win.getDecorView(); |
| return event.dispatch(this, decor != null |
| ? decor.getKeyDispatcherState() : null, this); |
| } |
| |
| /** |
| * Called to process a key shortcut event. |
| * You can override this to intercept all key shortcut events before they are |
| * dispatched to the window. Be sure to call this implementation for key shortcut |
| * events that should be handled normally. |
| * |
| * @param event The key shortcut event. |
| * @return True if this event was consumed. |
| */ |
| public boolean dispatchKeyShortcutEvent(KeyEvent event) { |
| onUserInteraction(); |
| if (getWindow().superDispatchKeyShortcutEvent(event)) { |
| return true; |
| } |
| return onKeyShortcut(event.getKeyCode(), event); |
| } |
| |
| /** |
| * Called to process touch screen events. You can override this to |
| * intercept all touch screen events before they are dispatched to the |
| * window. Be sure to call this implementation for touch screen events |
| * that should be handled normally. |
| * |
| * @param ev The touch screen event. |
| * |
| * @return boolean Return true if this event was consumed. |
| */ |
| public boolean dispatchTouchEvent(MotionEvent ev) { |
| if (ev.getAction() == MotionEvent.ACTION_DOWN) { |
| onUserInteraction(); |
| } |
| if (getWindow().superDispatchTouchEvent(ev)) { |
| return true; |
| } |
| return onTouchEvent(ev); |
| } |
| |
| /** |
| * Called to process trackball events. You can override this to |
| * intercept all trackball events before they are dispatched to the |
| * window. Be sure to call this implementation for trackball events |
| * that should be handled normally. |
| * |
| * @param ev The trackball event. |
| * |
| * @return boolean Return true if this event was consumed. |
| */ |
| public boolean dispatchTrackballEvent(MotionEvent ev) { |
| onUserInteraction(); |
| if (getWindow().superDispatchTrackballEvent(ev)) { |
| return true; |
| } |
| return onTrackballEvent(ev); |
| } |
| |
| public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { |
| event.setClassName(getClass().getName()); |
| event.setPackageName(getPackageName()); |
| |
| LayoutParams params = getWindow().getAttributes(); |
| boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && |
| (params.height == LayoutParams.MATCH_PARENT); |
| event.setFullScreen(isFullScreen); |
| |
| CharSequence title = getTitle(); |
| if (!TextUtils.isEmpty(title)) { |
| event.getText().add(title); |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Default implementation of |
| * {@link android.view.Window.Callback#onCreatePanelView} |
| * for activities. This |
| * simply returns null so that all panel sub-windows will have the default |
| * menu behavior. |
| */ |
| public View onCreatePanelView(int featureId) { |
| return null; |
| } |
| |
| /** |
| * Default implementation of |
| * {@link android.view.Window.Callback#onCreatePanelMenu} |
| * for activities. This calls through to the new |
| * {@link #onCreateOptionsMenu} method for the |
| * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, |
| * so that subclasses of Activity don't need to deal with feature codes. |
| */ |
| public boolean onCreatePanelMenu(int featureId, Menu menu) { |
| if (featureId == Window.FEATURE_OPTIONS_PANEL) { |
| boolean show = onCreateOptionsMenu(menu); |
| show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); |
| return show; |
| } |
| return false; |
| } |
| |
| /** |
| * Default implementation of |
| * {@link android.view.Window.Callback#onPreparePanel} |
| * for activities. This |
| * calls through to the new {@link #onPrepareOptionsMenu} method for the |
| * {@link android.view.Window#FEATURE_OPTIONS_PANEL} |
| * panel, so that subclasses of |
| * Activity don't need to deal with feature codes. |
| */ |
| public boolean onPreparePanel(int featureId, View view, Menu menu) { |
| if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { |
| boolean goforit = onPrepareOptionsMenu(menu); |
| goforit |= mFragments.dispatchPrepareOptionsMenu(menu); |
| return goforit && menu.hasVisibleItems(); |
| } |
| return true; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @return The default implementation returns true. |
| */ |
| public boolean onMenuOpened(int featureId, Menu menu) { |
| if (featureId == Window.FEATURE_ACTION_BAR) { |
| if (mActionBar != null) { |
| mActionBar.dispatchMenuVisibilityChanged(true); |
| } else { |
| Log.e(TAG, "Tried to open action bar menu with no action bar"); |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Default implementation of |
| * {@link android.view.Window.Callback#onMenuItemSelected} |
| * for activities. This calls through to the new |
| * {@link #onOptionsItemSelected} method for the |
| * {@link android.view.Window#FEATURE_OPTIONS_PANEL} |
| * panel, so that subclasses of |
| * Activity don't need to deal with feature codes. |
| */ |
| public boolean onMenuItemSelected(int featureId, MenuItem item) { |
| switch (featureId) { |
| case Window.FEATURE_OPTIONS_PANEL: |
| // Put event logging here so it gets called even if subclass |
| // doesn't call through to superclass's implmeentation of each |
| // of these methods below |
| EventLog.writeEvent(50000, 0, item.getTitleCondensed()); |
| if (onOptionsItemSelected(item)) { |
| return true; |
| } |
| return mFragments.dispatchOptionsItemSelected(item); |
| |
| case Window.FEATURE_CONTEXT_MENU: |
| EventLog.writeEvent(50000, 1, item.getTitleCondensed()); |
| if (onContextItemSelected(item)) { |
| return true; |
| } |
| return mFragments.dispatchContextItemSelected(item); |
| |
| default: |
| return false; |
| } |
| } |
| |
| /** |
| * Default implementation of |
| * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for |
| * activities. This calls through to {@link #onOptionsMenuClosed(Menu)} |
| * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, |
| * so that subclasses of Activity don't need to deal with feature codes. |
| * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the |
| * {@link #onContextMenuClosed(Menu)} will be called. |
| */ |
| public void onPanelClosed(int featureId, Menu menu) { |
| switch (featureId) { |
| case Window.FEATURE_OPTIONS_PANEL: |
| mFragments.dispatchOptionsMenuClosed(menu); |
| onOptionsMenuClosed(menu); |
| break; |
| |
| case Window.FEATURE_CONTEXT_MENU: |
| onContextMenuClosed(menu); |
| break; |
| |
| case Window.FEATURE_ACTION_BAR: |
| mActionBar.dispatchMenuVisibilityChanged(false); |
| break; |
| } |
| } |
| |
| /** |
| * Declare that the options menu has changed, so should be recreated. |
| * The {@link #onCreateOptionsMenu(Menu)} method will be called the next |
| * time it needs to be displayed. |
| */ |
| public void invalidateOptionsMenu() { |
| mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); |
| } |
| |
| /** |
| * Initialize the contents of the Activity's standard options menu. You |
| * should place your menu items in to <var>menu</var>. |
| * |
| * <p>This is only called once, the first time the options menu is |
| * displayed. To update the menu every time it is displayed, see |
| * {@link #onPrepareOptionsMenu}. |
| * |
| * <p>The default implementation populates the menu with standard system |
| * menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that |
| * they will be correctly ordered with application-defined menu items. |
| * Deriving classes should always call through to the base implementation. |
| * |
| * <p>You can safely hold on to <var>menu</var> (and any items created |
| * from it), making modifications to it as desired, until the next |
| * time onCreateOptionsMenu() is called. |
| * |
| * <p>When you add items to the menu, you can implement the Activity's |
| * {@link #onOptionsItemSelected} method to handle them there. |
| * |
| * @param menu The options menu in which you place your items. |
| * |
| * @return You must return true for the menu to be displayed; |
| * if you return false it will not be shown. |
| * |
| * @see #onPrepareOptionsMenu |
| * @see #onOptionsItemSelected |
| */ |
| public boolean onCreateOptionsMenu(Menu menu) { |
| if (mParent != null) { |
| return mParent.onCreateOptionsMenu(menu); |
| } |
| return true; |
| } |
| |
| /** |
| * Prepare the Screen's standard options menu to be displayed. This is |
| * called right before the menu is shown, every time it is shown. You can |
| * use this method to efficiently enable/disable items or otherwise |
| * dynamically modify the contents. |
| * |
| * <p>The default implementation updates the system menu items based on the |
| * activity's state. Deriving classes should always call through to the |
| * base class implementation. |
| * |
| * @param menu The options menu as last shown or first initialized by |
| * onCreateOptionsMenu(). |
| * |
| * @return You must return true for the menu to be displayed; |
| * if you return false it will not be shown. |
| * |
| * @see #onCreateOptionsMenu |
| */ |
| public boolean onPrepareOptionsMenu(Menu menu) { |
| if (mParent != null) { |
| return mParent.onPrepareOptionsMenu(menu); |
| } |
| return true; |
| } |
| |
| /** |
| * This hook is called whenever an item in your options menu is selected. |
| * The default implementation simply returns false to have the normal |
| * processing happen (calling the item's Runnable or sending a message to |
| * its Handler as appropriate). You can use this method for any items |
| * for which you would like to do processing without those other |
| * facilities. |
| * |
| * <p>Derived classes should call through to the base class for it to |
| * perform the default menu handling. |
| * |
| * @param item The menu item that was selected. |
| * |
| * @return boolean Return false to allow normal menu processing to |
| * proceed, true to consume it here. |
| * |
| * @see #onCreateOptionsMenu |
| */ |
| public boolean onOptionsItemSelected(MenuItem item) { |
| if (mParent != null) { |
| return mParent.onOptionsItemSelected(item); |
| } |
| return false; |
| } |
| |
| /** |
| * This hook is called whenever the options menu is being closed (either by the user canceling |
| * the menu with the back/menu button, or when an item is selected). |
| * |
| * @param menu The options menu as last shown or first initialized by |
| * onCreateOptionsMenu(). |
| */ |
| public void onOptionsMenuClosed(Menu menu) { |
| if (mParent != null) { |
| mParent.onOptionsMenuClosed(menu); |
| } |
| } |
| |
| /** |
| * Programmatically opens the options menu. If the options menu is already |
| * open, this method does nothing. |
| */ |
| public void openOptionsMenu() { |
| mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); |
| } |
| |
| /** |
| * Progammatically closes the options menu. If the options menu is already |
| * closed, this method does nothing. |
| */ |
| public void closeOptionsMenu() { |
| mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); |
| } |
| |
| /** |
| * Called when a context menu for the {@code view} is about to be shown. |
| * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every |
| * time the context menu is about to be shown and should be populated for |
| * the view (or item inside the view for {@link AdapterView} subclasses, |
| * this can be found in the {@code menuInfo})). |
| * <p> |
| * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an |
| * item has been selected. |
| * <p> |
| * It is not safe to hold onto the context menu after this method returns. |
| * {@inheritDoc} |
| */ |
| public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { |
| } |
| |
| /** |
| * Registers a context menu to be shown for the given view (multiple views |
| * can show the context menu). This method will set the |
| * {@link OnCreateContextMenuListener} on the view to this activity, so |
| * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be |
| * called when it is time to show the context menu. |
| * |
| * @see #unregisterForContextMenu(View) |
| * @param view The view that should show a context menu. |
| */ |
| public void registerForContextMenu(View view) { |
| view.setOnCreateContextMenuListener(this); |
| } |
| |
| /** |
| * Prevents a context menu to be shown for the given view. This method will remove the |
| * {@link OnCreateContextMenuListener} on the view. |
| * |
| * @see #registerForContextMenu(View) |
| * @param view The view that should stop showing a context menu. |
| */ |
| public void unregisterForContextMenu(View view) { |
| view.setOnCreateContextMenuListener(null); |
| } |
| |
| /** |
| * Programmatically opens the context menu for a particular {@code view}. |
| * The {@code view} should have been added via |
| * {@link #registerForContextMenu(View)}. |
| * |
| * @param view The view to show the context menu for. |
| */ |
| public void openContextMenu(View view) { |
| view.showContextMenu(); |
| } |
| |
| /** |
| * Programmatically closes the most recently opened context menu, if showing. |
| */ |
| public void closeContextMenu() { |
| mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); |
| } |
| |
| /** |
| * This hook is called whenever an item in a context menu is selected. The |
| * default implementation simply returns false to have the normal processing |
| * happen (calling the item's Runnable or sending a message to its Handler |
| * as appropriate). You can use this method for any items for which you |
| * would like to do processing without those other facilities. |
| * <p> |
| * Use {@link MenuItem#getMenuInfo()} to get extra information set by the |
| * View that added this menu item. |
| * <p> |
| * Derived classes should call through to the base class for it to perform |
| * the default menu handling. |
| * |
| * @param item The context menu item that was selected. |
| * @return boolean Return false to allow normal context menu processing to |
| * proceed, true to consume it here. |
| */ |
| public boolean onContextItemSelected(MenuItem item) { |
| if (mParent != null) { |
| return mParent.onContextItemSelected(item); |
| } |
| return false; |
| } |
| |
| /** |
| * This hook is called whenever the context menu is being closed (either by |
| * the user canceling the menu with the back/menu button, or when an item is |
| * selected). |
| * |
| * @param menu The context menu that is being closed. |
| */ |
| public void onContextMenuClosed(Menu menu) { |
| if (mParent != null) { |
| mParent.onContextMenuClosed(menu); |
| } |
| } |
| |
| /** |
| * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}. |
| */ |
| @Deprecated |
| protected Dialog onCreateDialog(int id) { |
| return null; |
| } |
| |
| /** |
| * Callback for creating dialogs that are managed (saved and restored) for you |
| * by the activity. The default implementation calls through to |
| * {@link #onCreateDialog(int)} for compatibility. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using a {@link DialogFragment} instead.</em> |
| * |
| * <p>If you use {@link #showDialog(int)}, the activity will call through to |
| * this method the first time, and hang onto it thereafter. Any dialog |
| * that is created by this method will automatically be saved and restored |
| * for you, including whether it is showing. |
| * |
| * <p>If you would like the activity to manage saving and restoring dialogs |
| * for you, you should override this method and handle any ids that are |
| * passed to {@link #showDialog}. |
| * |
| * <p>If you would like an opportunity to prepare your dialog before it is shown, |
| * override {@link #onPrepareDialog(int, Dialog, Bundle)}. |
| * |
| * @param id The id of the dialog. |
| * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. |
| * @return The dialog. If you return null, the dialog will not be created. |
| * |
| * @see #onPrepareDialog(int, Dialog, Bundle) |
| * @see #showDialog(int, Bundle) |
| * @see #dismissDialog(int) |
| * @see #removeDialog(int) |
| */ |
| protected Dialog onCreateDialog(int id, Bundle args) { |
| return onCreateDialog(id); |
| } |
| |
| /** |
| * @deprecated Old no-arguments version of |
| * {@link #onPrepareDialog(int, Dialog, Bundle)}. |
| */ |
| @Deprecated |
| protected void onPrepareDialog(int id, Dialog dialog) { |
| dialog.setOwnerActivity(this); |
| } |
| |
| /** |
| * Provides an opportunity to prepare a managed dialog before it is being |
| * shown. The default implementation calls through to |
| * {@link #onPrepareDialog(int, Dialog)} for compatibility. |
| * |
| * <p> |
| * Override this if you need to update a managed dialog based on the state |
| * of the application each time it is shown. For example, a time picker |
| * dialog might want to be updated with the current time. You should call |
| * through to the superclass's implementation. The default implementation |
| * will set this Activity as the owner activity on the Dialog. |
| * |
| * @param id The id of the managed dialog. |
| * @param dialog The dialog. |
| * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}. |
| * @see #onCreateDialog(int, Bundle) |
| * @see #showDialog(int) |
| * @see #dismissDialog(int) |
| * @see #removeDialog(int) |
| */ |
| protected void onPrepareDialog(int id, Dialog dialog, Bundle args) { |
| onPrepareDialog(id, dialog); |
| } |
| |
| /** |
| * Simple version of {@link #showDialog(int, Bundle)} that does not |
| * take any arguments. Simply calls {@link #showDialog(int, Bundle)} |
| * with null arguments. |
| */ |
| public final void showDialog(int id) { |
| showDialog(id, null); |
| } |
| |
| /** |
| * Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} |
| * will be made with the same id the first time this is called for a given |
| * id. From thereafter, the dialog will be automatically saved and restored. |
| * |
| * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * or later, consider instead using a {@link DialogFragment} instead.</em> |
| * |
| * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will |
| * be made to provide an opportunity to do any timely preparation. |
| * |
| * @param id The id of the managed dialog. |
| * @param args Arguments to pass through to the dialog. These will be saved |
| * and restored for you. Note that if the dialog is already created, |
| * {@link #onCreateDialog(int, Bundle)} will not be called with the new |
| * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. |
| * If you need to rebuild the dialog, call {@link #removeDialog(int)} first. |
| * @return Returns true if the Dialog was created; false is returned if |
| * it is not created because {@link #onCreateDialog(int, Bundle)} returns false. |
| * |
| * @see Dialog |
| * @see #onCreateDialog(int, Bundle) |
| * @see #onPrepareDialog(int, Dialog, Bundle) |
| * @see #dismissDialog(int) |
| * @see #removeDialog(int) |
| */ |
| public final boolean showDialog(int id, Bundle args) { |
| if (mManagedDialogs == null) { |
| mManagedDialogs = new SparseArray<ManagedDialog>(); |
| } |
| ManagedDialog md = mManagedDialogs.get(id); |
| if (md == null) { |
| md = new ManagedDialog(); |
| md.mDialog = createDialog(id, null, args); |
| if (md.mDialog == null) { |
| return false; |
| } |
| mManagedDialogs.put(id, md); |
| } |
| |
| md.mArgs = args; |
| onPrepareDialog(id, md.mDialog, args); |
| md.mDialog.show(); |
| return true; |
| } |
| |
| /** |
| * Dismiss a dialog that was previously shown via {@link #showDialog(int)}. |
| * |
| * @param id The id of the managed dialog. |
| * |
| * @throws IllegalArgumentException if the id was not previously shown via |
| * {@link #showDialog(int)}. |
| * |
| * @see #onCreateDialog(int, Bundle) |
| * @see #onPrepareDialog(int, Dialog, Bundle) |
| * @see #showDialog(int) |
| * @see #removeDialog(int) |
| */ |
| public final void dismissDialog(int id) { |
| if (mManagedDialogs == null) { |
| throw missingDialog(id); |
| } |
| |
| final ManagedDialog md = mManagedDialogs.get(id); |
| if (md == null) { |
| throw missingDialog(id); |
| } |
| md.mDialog.dismiss(); |
| } |
| |
| /** |
| * Creates an exception to throw if a user passed in a dialog id that is |
| * unexpected. |
| */ |
| private IllegalArgumentException missingDialog(int id) { |
| return new IllegalArgumentException("no dialog with id " + id + " was ever " |
| + "shown via Activity#showDialog"); |
| } |
| |
| /** |
| * Removes any internal references to a dialog managed by this Activity. |
| * If the dialog is showing, it will dismiss it as part of the clean up. |
| * |
| * <p>This can be useful if you know that you will never show a dialog again and |
| * want to avoid the overhead of saving and restoring it in the future. |
| * |
| * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function |
| * will not throw an exception if you try to remove an ID that does not |
| * currently have an associated dialog.</p> |
| * |
| * @param id The id of the managed dialog. |
| * |
| * @see #onCreateDialog(int, Bundle) |
| * @see #onPrepareDialog(int, Dialog, Bundle) |
| * @see #showDialog(int) |
| * @see #dismissDialog(int) |
| */ |
| public final void removeDialog(int id) { |
| if (mManagedDialogs != null) { |
| final ManagedDialog md = mManagedDialogs.get(id); |
| if (md != null) { |
| md.mDialog.dismiss(); |
| mManagedDialogs.remove(id); |
| } |
| } |
| } |
| |
| /** |
| * This hook is called when the user signals the desire to start a search. |
| * |
| * <p>You can use this function as a simple way to launch the search UI, in response to a |
| * menu item, search button, or other widgets within your activity. Unless overidden, |
| * calling this function is the same as calling |
| * {@link #startSearch startSearch(null, false, null, false)}, which launches |
| * search for the current activity as specified in its manifest, see {@link SearchManager}. |
| * |
| * <p>You can override this function to force global search, e.g. in response to a dedicated |
| * search key, or to block search entirely (by simply returning false). |
| * |
| * @return Returns {@code true} if search launched, and {@code false} if activity blocks it. |
| * The default implementation always returns {@code true}. |
| * |
| * @see android.app.SearchManager |
| */ |
| public boolean onSearchRequested() { |
| startSearch(null, false, null, false); |
| return true; |
| } |
| |
| /** |
| * This hook is called to launch the search UI. |
| * |
| * <p>It is typically called from onSearchRequested(), either directly from |
| * Activity.onSearchRequested() or from an overridden version in any given |
| * Activity. If your goal is simply to activate search, it is preferred to call |
| * onSearchRequested(), which may have been overriden elsewhere in your Activity. If your goal |
| * is to inject specific data such as context data, it is preferred to <i>override</i> |
| * onSearchRequested(), so that any callers to it will benefit from the override. |
| * |
| * @param initialQuery Any non-null non-empty string will be inserted as |
| * pre-entered text in the search query box. |
| * @param selectInitialQuery If true, the intial query will be preselected, which means that |
| * any further typing will replace it. This is useful for cases where an entire pre-formed |
| * query is being inserted. If false, the selection point will be placed at the end of the |
| * inserted query. This is useful when the inserted query is text that the user entered, |
| * and the user would expect to be able to keep typing. <i>This parameter is only meaningful |
| * if initialQuery is a non-empty string.</i> |
| * @param appSearchData An application can insert application-specific |
| * context here, in order to improve quality or specificity of its own |
| * searches. This data will be returned with SEARCH intent(s). Null if |
| * no extra data is required. |
| * @param globalSearch If false, this will only launch the search that has been specifically |
| * defined by the application (which is usually defined as a local search). If no default |
| * search is defined in the current application or activity, global search will be launched. |
| * If true, this will always launch a platform-global (e.g. web-based) search instead. |
| * |
| * @see android.app.SearchManager |
| * @see #onSearchRequested |
| */ |
| public void startSearch(String initialQuery, boolean selectInitialQuery, |
| Bundle appSearchData, boolean globalSearch) { |
| ensureSearchManager(); |
| mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), |
| appSearchData, globalSearch); |
| } |
| |
| /** |
| * Similar to {@link #startSearch}, but actually fires off the search query after invoking |
| * the search dialog. Made available for testing purposes. |
| * |
| * @param query The query to trigger. If empty, the request will be ignored. |
| * @param appSearchData An application can insert application-specific |
| * context here, in order to improve quality or specificity of its own |
| * searches. This data will be returned with SEARCH intent(s). Null if |
| * no extra data is required. |
| */ |
| public void triggerSearch(String query, Bundle appSearchData) { |
| ensureSearchManager(); |
| mSearchManager.triggerSearch(query, getComponentName(), appSearchData); |
| } |
| |
| /** |
| * Request that key events come to this activity. Use this if your |
| * activity has no views with focus, but the activity still wants |
| * a chance to process key events. |
| * |
| * @see android.view.Window#takeKeyEvents |
| */ |
| public void takeKeyEvents(boolean get) { |
| getWindow().takeKeyEvents(get); |
| } |
| |
| /** |
| * Enable extended window features. This is a convenience for calling |
| * {@link android.view.Window#requestFeature getWindow().requestFeature()}. |
| * |
| * @param featureId The desired feature as defined in |
| * {@link android.view.Window}. |
| * @return Returns true if the requested feature is supported and now |
| * enabled. |
| * |
| * @see android.view.Window#requestFeature |
| */ |
| public final boolean requestWindowFeature(int featureId) { |
| return getWindow().requestFeature(featureId); |
| } |
| |
| /** |
| * Convenience for calling |
| * {@link android.view.Window#setFeatureDrawableResource}. |
| */ |
| public final void setFeatureDrawableResource(int featureId, int resId) { |
| getWindow().setFeatureDrawableResource(featureId, resId); |
| } |
| |
| /** |
| * Convenience for calling |
| * {@link android.view.Window#setFeatureDrawableUri}. |
| */ |
| public final void setFeatureDrawableUri(int featureId, Uri uri) { |
| getWindow().setFeatureDrawableUri(featureId, uri); |
| } |
| |
| /** |
| * Convenience for calling |
| * {@link android.view.Window#setFeatureDrawable(int, Drawable)}. |
| */ |
| public final void setFeatureDrawable(int featureId, Drawable drawable) { |
| getWindow().setFeatureDrawable(featureId, drawable); |
| } |
| |
| /** |
| * Convenience for calling |
| * {@link android.view.Window#setFeatureDrawableAlpha}. |
| */ |
| public final void setFeatureDrawableAlpha(int featureId, int alpha) { |
| getWindow().setFeatureDrawableAlpha(featureId, alpha); |
| } |
| |
| /** |
| * Convenience for calling |
| * {@link android.view.Window#getLayoutInflater}. |
| */ |
| public LayoutInflater getLayoutInflater() { |
| return getWindow().getLayoutInflater(); |
| } |
| |
| /** |
| * Returns a {@link MenuInflater} with this context. |
| */ |
| public MenuInflater getMenuInflater() { |
| return new MenuInflater(this); |
| } |
| |
| @Override |
| protected void onApplyThemeResource(Resources.Theme theme, int resid, |
| boolean first) { |
| if (mParent == null) { |
| super.onApplyThemeResource(theme, resid, first); |
| } else { |
| try { |
| theme.setTo(mParent.getTheme()); |
| } catch (Exception e) { |
| // Empty |
| } |
| theme.applyStyle(resid, false); |
| } |
| } |
| |
| /** |
| * Launch an activity for which you would like a result when it finished. |
| * When this activity exits, your |
| * onActivityResult() method will be called with the given requestCode. |
| * Using a negative requestCode is the same as calling |
| * {@link #startActivity} (the activity is not launched as a sub-activity). |
| * |
| * <p>Note that this method should only be used with Intent protocols |
| * that are defined to return a result. In other protocols (such as |
| * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may |
| * not get the result when you expect. For example, if the activity you |
| * are launching uses the singleTask launch mode, it will not run in your |
| * task and thus you will immediately receive a cancel result. |
| * |
| * <p>As a special case, if you call startActivityForResult() with a requestCode |
| * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your |
| * activity, then your window will not be displayed until a result is |
| * returned back from the started activity. This is to avoid visible |
| * flickering when redirecting to another activity. |
| * |
| * <p>This method throws {@link android.content.ActivityNotFoundException} |
| * if there was no Activity found to run the given Intent. |
| * |
| * @param intent The intent to start. |
| * @param requestCode If >= 0, this code will be returned in |
| * onActivityResult() when the activity exits. |
| * |
| * @throws android.content.ActivityNotFoundException |
| * |
| * @see #startActivity |
| */ |
| public void startActivityForResult(Intent intent, int requestCode) { |
| if (mParent == null) { |
| Instrumentation.ActivityResult ar = |
| mInstrumentation.execStartActivity( |
| this, mMainThread.getApplicationThread(), mToken, this, |
| intent, requestCode); |
| if (ar != null) { |
| mMainThread.sendActivityResult( |
| mToken, mEmbeddedID, requestCode, ar.getResultCode(), |
| ar.getResultData()); |
| } |
| if (requestCode >= 0) { |
| // If this start is requesting a result, we can avoid making |
| // the activity visible until the result is received. Setting |
| // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the |
| // activity hidden during this time, to avoid flickering. |
| // This can only be done when a result is requested because |
| // that guarantees we will get information back when the |
| // activity is finished, no matter what happens to it. |
| mStartedActivity = true; |
| } |
| } else { |
| mParent.startActivityFromChild(this, intent, requestCode); |
| } |
| } |
| |
| /** |
| * Like {@link #startActivityForResult(Intent, int)}, but allowing you |
| * to use a IntentSender to describe the activity to be started. If |
| * the IntentSender is for an activity, that activity will be started |
| * as if you had called the regular {@link #startActivityForResult(Intent, int)} |
| * here; otherwise, its associated action will be executed (such as |
| * sending a broadcast) as if you had called |
| * {@link IntentSender#sendIntent IntentSender.sendIntent} on it. |
| * |
| * @param intent The IntentSender to launch. |
| * @param requestCode If >= 0, this code will be returned in |
| * onActivityResult() when the activity exits. |
| * @param fillInIntent If non-null, this will be provided as the |
| * intent parameter to {@link IntentSender#sendIntent}. |
| * @param flagsMask Intent flags in the original IntentSender that you |
| * would like to change. |
| * @param flagsValues Desired values for any bits set in |
| * <var>flagsMask</var> |
| * @param extraFlags Always set to 0. |
| */ |
| public void startIntentSenderForResult(IntentSender intent, int requestCode, |
| Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) |
| throws IntentSender.SendIntentException { |
| if (mParent == null) { |
| startIntentSenderForResultInner(intent, requestCode, fillInIntent, |
| flagsMask, flagsValues, this); |
| } else { |
| mParent.startIntentSenderFromChild(this, intent, requestCode, |
| fillInIntent, flagsMask, flagsValues, extraFlags); |
| } |
| } |
| |
| private void startIntentSenderForResultInner(IntentSender intent, int requestCode, |
| Intent fillInIntent, int flagsMask, int flagsValues, Activity activity) |
| throws IntentSender.SendIntentException { |
| try { |
| String resolvedType = null; |
| if (fillInIntent != null) { |
| resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); |
| } |
| int result = ActivityManagerNative.getDefault() |
| .startActivityIntentSender(mMainThread.getApplicationThread(), intent, |
| fillInIntent, resolvedType, mToken, activity.mEmbeddedID, |
| requestCode, flagsMask, flagsValues); |
| if (result == IActivityManager.START_CANCELED) { |
| throw new IntentSender.SendIntentException(); |
| } |
| Instrumentation.checkStartActivityResult(result, null); |
| } catch (RemoteException e) { |
| } |
| if (requestCode >= 0) { |
| // If this start is requesting a result, we can avoid making |
| // the activity visible until the result is received. Setting |
| // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the |
| // activity hidden during this time, to avoid flickering. |
| // This can only be done when a result is requested because |
| // that guarantees we will get information back when the |
| // activity is finished, no matter what happens to it. |
| mStartedActivity = true; |
| } |
| } |
| |
| /** |
| * Launch a new activity. You will not receive any information about when |
| * the activity exits. This implementation overrides the base version, |
| * providing information about |
| * the activity performing the launch. Because of this additional |
| * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not |
| * required; if not specified, the new activity will be added to the |
| * task of the caller. |
| * |
| * <p>This method throws {@link android.content.ActivityNotFoundException} |
| * if there was no Activity found to run the given Intent. |
| * |
| * @param intent The intent to start. |
| * |
| * @throws android.content.ActivityNotFoundException |
| * |
| * @see #startActivityForResult |
| */ |
| @Override |
| public void startActivity(Intent intent) { |
| startActivityForResult(intent, -1); |
| } |
| |
| /** |
| * Launch a new activity. You will not receive any information about when |
| * the activity exits. This implementation overrides the base version, |
| * providing information about |
| * the activity performing the launch. Because of this additional |
| * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not |
| * required; if not specified, the new activity will be added to the |
| * task of the caller. |
| * |
| * <p>This method throws {@link android.content.ActivityNotFoundException} |
| * if there was no Activity found to run the given Intent. |
| * |
| * @param intents The intents to start. |
| * |
| * @throws android.content.ActivityNotFoundException |
| * |
| * @see #startActivityForResult |
| */ |
| @Override |
| public void startActivities(Intent[] intents) { |
| mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), |
| mToken, this, intents); |
| } |
| |
| /** |
| * Like {@link #startActivity(Intent)}, but taking a IntentSender |
| * to start; see |
| * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} |
| * for more information. |
| * |
| * @param intent The IntentSender to launch. |
| * @param fillInIntent If non-null, this will be provided as the |
| * intent parameter to {@link IntentSender#sendIntent}. |
| * @param flagsMask Intent flags in the original IntentSender that you |
| * would like to change. |
| * @param flagsValues Desired values for any bits set in |
| * <var>flagsMask</var> |
| * @param extraFlags Always set to 0. |
| */ |
| public void startIntentSender(IntentSender intent, |
| Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) |
| throws IntentSender.SendIntentException { |
| startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, |
| flagsValues, extraFlags); |
| } |
| |
| /** |
| * A special variation to launch an activity only if a new activity |
| * instance is needed to handle the given Intent. In other words, this is |
| * just like {@link #startActivityForResult(Intent, int)} except: if you are |
| * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or |
| * singleTask or singleTop |
| * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, |
| * and the activity |
| * that handles <var>intent</var> is the same as your currently running |
| * activity, then a new instance is not needed. In this case, instead of |
| * the normal behavior of calling {@link #onNewIntent} this function will |
| * return and you can handle the Intent yourself. |
| * |
| * <p>This function can only be called from a top-level activity; if it is |
| * called from a child activity, a runtime exception will be thrown. |
| * |
| * @param intent The intent to start. |
| * @param requestCode If >= 0, this code will be returned in |
| * onActivityResult() when the activity exits, as described in |
| * {@link #startActivityForResult}. |
| * |
| * @return If a new activity was launched then true is returned; otherwise |
| * false is returned and you must handle the Intent yourself. |
| * |
| * @see #startActivity |
| * @see #startActivityForResult |
| */ |
| public boolean startActivityIfNeeded(Intent intent, int requestCode) { |
| if (mParent == null) { |
| int result = IActivityManager.START_RETURN_INTENT_TO_CALLER; |
| try { |
| result = ActivityManagerNative.getDefault() |
| .startActivity(mMainThread.getApplicationThread(), |
| intent, intent.resolveTypeIfNeeded( |
| getContentResolver()), |
| null, 0, |
| mToken, mEmbeddedID, requestCode, true, false); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| |
| Instrumentation.checkStartActivityResult(result, intent); |
| |
| if (requestCode >= 0) { |
| // If this start is requesting a result, we can avoid making |
| // the activity visible until the result is received. Setting |
| // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the |
| // activity hidden during this time, to avoid flickering. |
| // This can only be done when a result is requested because |
| // that guarantees we will get information back when the |
| // activity is finished, no matter what happens to it. |
| mStartedActivity = true; |
| } |
| return result != IActivityManager.START_RETURN_INTENT_TO_CALLER; |
| } |
| |
| throw new UnsupportedOperationException( |
| "startActivityIfNeeded can only be called from a top-level activity"); |
| } |
| |
| /** |
| * Special version of starting an activity, for use when you are replacing |
| * other activity components. You can use this to hand the Intent off |
| * to the next Activity that can handle it. You typically call this in |
| * {@link #onCreate} with the Intent returned by {@link #getIntent}. |
| * |
| * @param intent The intent to dispatch to the next activity. For |
| * correct behavior, this must be the same as the Intent that started |
| * your own activity; the only changes you can make are to the extras |
| * inside of it. |
| * |
| * @return Returns a boolean indicating whether there was another Activity |
| * to start: true if there was a next activity to start, false if there |
| * wasn't. In general, if true is returned you will then want to call |
| * finish() on yourself. |
| */ |
| public boolean startNextMatchingActivity(Intent intent) { |
| if (mParent == null) { |
| try { |
| return ActivityManagerNative.getDefault() |
| .startNextMatchingActivity(mToken, intent); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| return false; |
| } |
| |
| throw new UnsupportedOperationException( |
| "startNextMatchingActivity can only be called from a top-level activity"); |
| } |
| |
| /** |
| * This is called when a child activity of this one calls its |
| * {@link #startActivity} or {@link #startActivityForResult} method. |
| * |
| * <p>This method throws {@link android.content.ActivityNotFoundException} |
| * if there was no Activity found to run the given Intent. |
| * |
| * @param child The activity making the call. |
| * @param intent The intent to start. |
| * @param requestCode Reply request code. < 0 if reply is not requested. |
| * |
| * @throws android.content.ActivityNotFoundException |
| * |
| * @see #startActivity |
| * @see #startActivityForResult |
| */ |
| public void startActivityFromChild(Activity child, Intent intent, |
| int requestCode) { |
| Instrumentation.ActivityResult ar = |
| mInstrumentation.execStartActivity( |
| this, mMainThread.getApplicationThread(), mToken, child, |
| intent, requestCode); |
| if (ar != null) { |
| mMainThread.sendActivityResult( |
| mToken, child.mEmbeddedID, requestCode, |
| ar.getResultCode(), ar.getResultData()); |
| } |
| } |
| |
| /** |
| * This is called when a Fragment in this activity calls its |
| * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} |
| * method. |
| * |
| * <p>This method throws {@link android.content.ActivityNotFoundException} |
| * if there was no Activity found to run the given Intent. |
| * |
| * @param fragment The fragment making the call. |
| * @param intent The intent to start. |
| * @param requestCode Reply request code. < 0 if reply is not requested. |
| * |
| * @throws android.content.ActivityNotFoundException |
| * |
| * @see Fragment#startActivity |
| * @see Fragment#startActivityForResult |
| */ |
| public void startActivityFromFragment(Fragment fragment, Intent intent, |
| int requestCode) { |
| Instrumentation.ActivityResult ar = |
| mInstrumentation.execStartActivity( |
| this, mMainThread.getApplicationThread(), mToken, fragment, |
| intent, requestCode); |
| if (ar != null) { |
| mMainThread.sendActivityResult( |
| mToken, fragment.mWho, requestCode, |
| ar.getResultCode(), ar.getResultData()); |
| } |
| } |
| |
| /** |
| * Like {@link #startActivityFromChild(Activity, Intent, int)}, but |
| * taking a IntentSender; see |
| * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} |
| * for more information. |
| */ |
| public void startIntentSenderFromChild(Activity child, IntentSender intent, |
| int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, |
| int extraFlags) |
| throws IntentSender.SendIntentException { |
| startIntentSenderForResultInner(intent, requestCode, fillInIntent, |
| flagsMask, flagsValues, child); |
| } |
| |
| /** |
| * Call immediately after one of the flavors of {@link #startActivity(Intent)} |
| * or {@link #finish} to specify an explicit transition animation to |
| * perform next. |
| * @param enterAnim A resource ID of the animation resource to use for |
| * the incoming activity. Use 0 for no animation. |
| * @param exitAnim A resource ID of the animation resource to use for |
| * the outgoing activity. Use 0 for no animation. |
| */ |
| public void overridePendingTransition(int enterAnim, int exitAnim) { |
| try { |
| ActivityManagerNative.getDefault().overridePendingTransition( |
| mToken, getPackageName(), enterAnim, exitAnim); |
| } catch (RemoteException e) { |
| } |
| } |
| |
| /** |
| * Call this to set the result that your activity will return to its |
| * caller. |
| * |
| * @param resultCode The result code to propagate back to the originating |
| * activity, often RESULT_CANCELED or RESULT_OK |
| * |
| * @see #RESULT_CANCELED |
| * @see #RESULT_OK |
| * @see #RESULT_FIRST_USER |
| * @see #setResult(int, Intent) |
| */ |
| public final void setResult(int resultCode) { |
| synchronized (this) { |
| mResultCode = resultCode; |
| mResultData = null; |
| } |
| } |
| |
| /** |
| * Call this to set the result that your activity will return to its |
| * caller. |
| * |
| * @param resultCode The result code to propagate back to the originating |
| * activity, often RESULT_CANCELED or RESULT_OK |
| * @param data The data to propagate back to the originating activity. |
| * |
| * @see #RESULT_CANCELED |
| * @see #RESULT_OK |
| * @see #RESULT_FIRST_USER |
| * @see #setResult(int) |
| */ |
| public final void setResult(int resultCode, Intent data) { |
| synchronized (this) { |
| mResultCode = resultCode; |
| mResultData = data; |
| } |
| } |
| |
| /** |
| * Return the name of the package that invoked this activity. This is who |
| * the data in {@link #setResult setResult()} will be sent to. You can |
| * use this information to validate that the recipient is allowed to |
| * receive the data. |
| * |
| * <p>Note: if the calling activity is not expecting a result (that is it |
| * did not use the {@link #startActivityForResult} |
| * form that includes a request code), then the calling package will be |
| * null. |
| * |
| * @return The package of the activity that will receive your |
| * reply, or null if none. |
| */ |
| public String getCallingPackage() { |
| try { |
| return ActivityManagerNative.getDefault().getCallingPackage(mToken); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| /** |
| * Return the name of the activity that invoked this activity. This is |
| * who the data in {@link #setResult setResult()} will be sent to. You |
| * can use this information to validate that the recipient is allowed to |
| * receive the data. |
| * |
| * <p>Note: if the calling activity is not expecting a result (that is it |
| * did not use the {@link #startActivityForResult} |
| * form that includes a request code), then the calling package will be |
| * null. |
| * |
| * @return String The full name of the activity that will receive your |
| * reply, or null if none. |
| */ |
| public ComponentName getCallingActivity() { |
| try { |
| return ActivityManagerNative.getDefault().getCallingActivity(mToken); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| /** |
| * Control whether this activity's main window is visible. This is intended |
| * only for the special case of an activity that is not going to show a |
| * UI itself, but can't just finish prior to onResume() because it needs |
| * to wait for a service binding or such. Setting this to false allows |
| * you to prevent your UI from being shown during that time. |
| * |
| * <p>The default value for this is taken from the |
| * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme. |
| */ |
| public void setVisible(boolean visible) { |
| if (mVisibleFromClient != visible) { |
| mVisibleFromClient = visible; |
| if (mVisibleFromServer) { |
| if (visible) makeVisible(); |
| else mDecor.setVisibility(View.INVISIBLE); |
| } |
| } |
| } |
| |
| void makeVisible() { |
| if (!mWindowAdded) { |
| ViewManager wm = getWindowManager(); |
| wm.addView(mDecor, getWindow().getAttributes()); |
| mWindowAdded = true; |
| } |
| mDecor.setVisibility(View.VISIBLE); |
| } |
| |
| /** |
| * Check to see whether this activity is in the process of finishing, |
| * either because you called {@link #finish} on it or someone else |
| * has requested that it finished. This is often used in |
| * {@link #onPause} to determine whether the activity is simply pausing or |
| * completely finishing. |
| * |
| * @return If the activity is finishing, returns true; else returns false. |
| * |
| * @see #finish |
| */ |
| public boolean isFinishing() { |
| return mFinished; |
| } |
| |
| /** |
| * Check to see whether this activity is in the process of being destroyed in order to be |
| * recreated with a new configuration. This is often used in |
| * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed |
| * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}. |
| * |
| * @return If the activity is being torn down in order to be recreated with a new configuration, |
| * returns true; else returns false. |
| */ |
| public boolean isChangingConfigurations() { |
| return mChangingConfigurations; |
| } |
| |
| /** |
| * Cause this Activity to be recreated with a new instance. This results |
| * in essentially the same flow as when the Activity is created due to |
| * a configuration change -- the current instance will go through its |
| * lifecycle to {@link #onDestroy} and a new instance then created after it. |
| */ |
| public void recreate() { |
| if (mParent != null) { |
| throw new IllegalStateException("Can only be called on top-level activity"); |
| } |
| if (Looper.myLooper() != mMainThread.getLooper()) { |
| throw new IllegalStateException("Must be called from main thread"); |
| } |
| mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false); |
| } |
| |
| /** |
| * Call this when your activity is done and should be closed. The |
| * ActivityResult is propagated back to whoever launched you via |
| * onActivityResult(). |
| */ |
| public void finish() { |
| if (mParent == null) { |
| int resultCode; |
| Intent resultData; |
| synchronized (this) { |
| resultCode = mResultCode; |
| resultData = mResultData; |
| } |
| if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken); |
| try { |
| if (ActivityManagerNative.getDefault() |
| .finishActivity(mToken, resultCode, resultData)) { |
| mFinished = true; |
| } |
| } catch (RemoteException e) { |
| // Empty |
| } |
| } else { |
| mParent.finishFromChild(this); |
| } |
| } |
| |
| /** |
| * This is called when a child activity of this one calls its |
| * {@link #finish} method. The default implementation simply calls |
| * finish() on this activity (the parent), finishing the entire group. |
| * |
| * @param child The activity making the call. |
| * |
| * @see #finish |
| */ |
| public void finishFromChild(Activity child) { |
| finish(); |
| } |
| |
| /** |
| * Force finish another activity that you had previously started with |
| * {@link #startActivityForResult}. |
| * |
| * @param requestCode The request code of the activity that you had |
| * given to startActivityForResult(). If there are multiple |
| * activities started with this request code, they |
| * will all be finished. |
| */ |
| public void finishActivity(int requestCode) { |
| if (mParent == null) { |
| try { |
| ActivityManagerNative.getDefault() |
| .finishSubActivity(mToken, mEmbeddedID, requestCode); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| } else { |
| mParent.finishActivityFromChild(this, requestCode); |
| } |
| } |
| |
| /** |
| * This is called when a child activity of this one calls its |
| * finishActivity(). |
| * |
| * @param child The activity making the call. |
| * @param requestCode Request code that had been used to start the |
| * activity. |
| */ |
| public void finishActivityFromChild(Activity child, int requestCode) { |
| try { |
| ActivityManagerNative.getDefault() |
| .finishSubActivity(mToken, child.mEmbeddedID, requestCode); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| } |
| |
| /** |
| * Called when an activity you launched exits, giving you the requestCode |
| * you started it with, the resultCode it returned, and any additional |
| * data from it. The <var>resultCode</var> will be |
| * {@link #RESULT_CANCELED} if the activity explicitly returned that, |
| * didn't return any result, or crashed during its operation. |
| * |
| * <p>You will receive this call immediately before onResume() when your |
| * activity is re-starting. |
| * |
| * @param requestCode The integer request code originally supplied to |
| * startActivityForResult(), allowing you to identify who this |
| * result came from. |
| * @param resultCode The integer result code returned by the child activity |
| * through its setResult(). |
| * @param data An Intent, which can return result data to the caller |
| * (various data can be attached to Intent "extras"). |
| * |
| * @see #startActivityForResult |
| * @see #createPendingResult |
| * @see #setResult(int) |
| */ |
| protected void onActivityResult(int requestCode, int resultCode, Intent data) { |
| } |
| |
| /** |
| * Create a new PendingIntent object which you can hand to others |
| * for them to use to send result data back to your |
| * {@link #onActivityResult} callback. The created object will be either |
| * one-shot (becoming invalid after a result is sent back) or multiple |
| * (allowing any number of results to be sent through it). |
| * |
| * @param requestCode Private request code for the sender that will be |
| * associated with the result data when it is returned. The sender can not |
| * modify this value, allowing you to identify incoming results. |
| * @param data Default data to supply in the result, which may be modified |
| * by the sender. |
| * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, |
| * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, |
| * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, |
| * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, |
| * or any of the flags as supported by |
| * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts |
| * of the intent that can be supplied when the actual send happens. |
| * |
| * @return Returns an existing or new PendingIntent matching the given |
| * parameters. May return null only if |
| * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been |
| * supplied. |
| * |
| * @see PendingIntent |
| */ |
| public PendingIntent createPendingResult(int requestCode, Intent data, |
| int flags) { |
| String packageName = getPackageName(); |
| try { |
| IIntentSender target = |
| ActivityManagerNative.getDefault().getIntentSender( |
| IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, |
| mParent == null ? mToken : mParent.mToken, |
| mEmbeddedID, requestCode, new Intent[] { data }, null, flags); |
| return target != null ? new PendingIntent(target) : null; |
| } catch (RemoteException e) { |
| // Empty |
| } |
| return null; |
| } |
| |
| /** |
| * Change the desired orientation of this activity. If the activity |
| * is currently in the foreground or otherwise impacting the screen |
| * orientation, the screen will immediately be changed (possibly causing |
| * the activity to be restarted). Otherwise, this will be used the next |
| * time the activity is visible. |
| * |
| * @param requestedOrientation An orientation constant as used in |
| * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. |
| */ |
| public void setRequestedOrientation(int requestedOrientation) { |
| if (mParent == null) { |
| try { |
| ActivityManagerNative.getDefault().setRequestedOrientation( |
| mToken, requestedOrientation); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| } else { |
| mParent.setRequestedOrientation(requestedOrientation); |
| } |
| } |
| |
| /** |
| * Return the current requested orientation of the activity. This will |
| * either be the orientation requested in its component's manifest, or |
| * the last requested orientation given to |
| * {@link #setRequestedOrientation(int)}. |
| * |
| * @return Returns an orientation constant as used in |
| * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}. |
| */ |
| public int getRequestedOrientation() { |
| if (mParent == null) { |
| try { |
| return ActivityManagerNative.getDefault() |
| .getRequestedOrientation(mToken); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| } else { |
| return mParent.getRequestedOrientation(); |
| } |
| return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; |
| } |
| |
| /** |
| * Return the identifier of the task this activity is in. This identifier |
| * will remain the same for the lifetime of the activity. |
| * |
| * @return Task identifier, an opaque integer. |
| */ |
| public int getTaskId() { |
| try { |
| return ActivityManagerNative.getDefault() |
| .getTaskForActivity(mToken, false); |
| } catch (RemoteException e) { |
| return -1; |
| } |
| } |
| |
| /** |
| * Return whether this activity is the root of a task. The root is the |
| * first activity in a task. |
| * |
| * @return True if this is the root activity, else false. |
| */ |
| public boolean isTaskRoot() { |
| try { |
| return ActivityManagerNative.getDefault() |
| .getTaskForActivity(mToken, true) >= 0; |
| } catch (RemoteException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Move the task containing this activity to the back of the activity |
| * stack. The activity's order within the task is unchanged. |
| * |
| * @param nonRoot If false then this only works if the activity is the root |
| * of a task; if true it will work for any activity in |
| * a task. |
| * |
| * @return If the task was moved (or it was already at the |
| * back) true is returned, else false. |
| */ |
| public boolean moveTaskToBack(boolean nonRoot) { |
| try { |
| return ActivityManagerNative.getDefault().moveActivityTaskToBack( |
| mToken, nonRoot); |
| } catch (RemoteException e) { |
| // Empty |
| } |
| return false; |
| } |
| |
| /** |
| * Returns class name for this activity with the package prefix removed. |
| * This is the default name used to read and write settings. |
| * |
| * @return The local class name. |
| */ |
| public String getLocalClassName() { |
| final String pkg = getPackageName(); |
| final String cls = mComponent.getClassName(); |
| int packageLen = pkg.length(); |
| if (!cls.startsWith(pkg) || cls.length() <= packageLen |
| || cls.charAt(packageLen) != '.') { |
| return cls; |
| } |
| return cls.substring(packageLen+1); |
| } |
| |
| /** |
| * Returns complete component name of this activity. |
| * |
| * @return Returns the complete component name for this activity |
| */ |
| public ComponentName getComponentName() |
| { |
| return mComponent; |
| } |
| |
| /** |
| * Retrieve a {@link SharedPreferences} object for accessing preferences |
| * that are private to this activity. This simply calls the underlying |
| * {@link #getSharedPreferences(String, int)} method by passing in this activity's |
| * class name as the preferences name. |
| * |
| * @param mode Operating mode. Use {@link #MODE_PRIVATE} for the default |
| * operation, {@link #MODE_WORLD_READABLE} and |
| * {@link #MODE_WORLD_WRITEABLE} to control permissions. |
| * |
| * @return Returns the single SharedPreferences instance that can be used |
| * to retrieve and modify the preference values. |
| */ |
| public SharedPreferences getPreferences(int mode) { |
| return getSharedPreferences(getLocalClassName(), mode); |
| } |
| |
| private void ensureSearchManager() { |
| if (mSearchManager != null) { |
| return; |
| } |
| |
| mSearchManager = new SearchManager(this, null); |
| } |
| |
| @Override |
| public Object getSystemService(String name) { |
| if (getBaseContext() == null) { |
| throw new IllegalStateException( |
| "System services not available to Activities before onCreate()"); |
| } |
| |
| if (WINDOW_SERVICE.equals(name)) { |
| return mWindowManager; |
| } else if (SEARCH_SERVICE.equals(name)) { |
| ensureSearchManager(); |
| return mSearchManager; |
| } |
| return super.getSystemService(name); |
| } |
| |
| /** |
| * Change the title associated with this activity. If this is a |
| * top-level activity, the title for its window will change. If it |
| * is an embedded activity, the parent can do whatever it wants |
| * with it. |
| */ |
| public void setTitle(CharSequence title) { |
| mTitle = title; |
| onTitleChanged(title, mTitleColor); |
| |
| if (mParent != null) { |
| mParent.onChildTitleChanged(this, title); |
| } |
| } |
| |
| /** |
| * Change the title associated with this activity. If this is a |
| * top-level activity, the title for its window will change. If it |
| * is an embedded activity, the parent can do whatever it wants |
| * with it. |
| */ |
| public void setTitle(int titleId) { |
| setTitle(getText(titleId)); |
| } |
| |
| public void setTitleColor(int textColor) { |
| mTitleColor = textColor; |
| onTitleChanged(mTitle, textColor); |
| } |
| |
| public final CharSequence getTitle() { |
| return mTitle; |
| } |
| |
| public final int getTitleColor() { |
| return mTitleColor; |
| } |
| |
| protected void onTitleChanged(CharSequence title, int color) { |
| if (mTitleReady) { |
| final Window win = getWindow(); |
| if (win != null) { |
| win.setTitle(title); |
| if (color != 0) { |
| win.setTitleColor(color); |
| } |
| } |
| } |
| } |
| |
| protected void onChildTitleChanged(Activity childActivity, CharSequence title) { |
| } |
| |
| /** |
| * Sets the visibility of the progress bar in the title. |
| * <p> |
| * In order for the progress bar to be shown, the feature must be requested |
| * via {@link #requestWindowFeature(int)}. |
| * |
| * @param visible Whether to show the progress bars in the title. |
| */ |
| public final void setProgressBarVisibility(boolean visible) { |
| getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : |
| Window.PROGRESS_VISIBILITY_OFF); |
| } |
| |
| /** |
| * Sets the visibility of the indeterminate progress bar in the title. |
| * <p> |
| * In order for the progress bar to be shown, the feature must be requested |
| * via {@link #requestWindowFeature(int)}. |
| * |
| * @param visible Whether to show the progress bars in the title. |
| */ |
| public final void setProgressBarIndeterminateVisibility(boolean visible) { |
| getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, |
| visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF); |
| } |
| |
| /** |
| * Sets whether the horizontal progress bar in the title should be indeterminate (the circular |
| * is always indeterminate). |
| * <p> |
| * In order for the progress bar to be shown, the feature must be requested |
| * via {@link #requestWindowFeature(int)}. |
| * |
| * @param indeterminate Whether the horizontal progress bar should be indeterminate. |
| */ |
| public final void setProgressBarIndeterminate(boolean indeterminate) { |
| getWindow().setFeatureInt(Window.FEATURE_PROGRESS, |
| indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF); |
| } |
| |
| /** |
| * Sets the progress for the progress bars in the title. |
| * <p> |
| * In order for the progress bar to be shown, the feature must be requested |
| * via {@link #requestWindowFeature(int)}. |
| * |
| * @param progress The progress for the progress bar. Valid ranges are from |
| * 0 to 10000 (both inclusive). If 10000 is given, the progress |
| * bar will be completely filled and will fade out. |
| */ |
| public final void setProgress(int progress) { |
| getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START); |
| } |
| |
| /** |
| * Sets the secondary progress for the progress bar in the title. This |
| * progress is drawn between the primary progress (set via |
| * {@link #setProgress(int)} and the background. It can be ideal for media |
| * scenarios such as showing the buffering progress while the default |
| * progress shows the play progress. |
| * <p> |
| * In order for the progress bar to be shown, the feature must be requested |
| * via {@link #requestWindowFeature(int)}. |
| * |
| * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from |
| * 0 to 10000 (both inclusive). |
| */ |
| public final void setSecondaryProgress(int secondaryProgress) { |
| getWindow().setFeatureInt(Window.FEATURE_PROGRESS, |
| secondaryProgress + Window.PROGRESS_SECONDARY_START); |
| } |
| |
| /** |
| * Suggests an audio stream whose volume should be changed by the hardware |
| * volume controls. |
| * <p> |
| * The suggested audio stream will be tied to the window of this Activity. |
| * If the Activity is switched, the stream set here is no longer the |
| * suggested stream. The client does not need to save and restore the old |
| * suggested stream value in onPause and onResume. |
| * |
| * @param streamType The type of the audio stream whose volume should be |
| * changed by the hardware volume controls. It is not guaranteed that |
| * the hardware volume controls will always change this stream's |
| * volume (for example, if a call is in progress, its stream's volume |
| * may be changed instead). To reset back to the default, use |
| * {@link AudioManager#USE_DEFAULT_STREAM_TYPE}. |
| */ |
| public final void setVolumeControlStream(int streamType) { |
| getWindow().setVolumeControlStream(streamType); |
| } |
| |
| /** |
| * Gets the suggested audio stream whose volume should be changed by the |
| * harwdare volume controls. |
| * |
| * @return The suggested audio stream type whose volume should be changed by |
| * the hardware volume controls. |
| * @see #setVolumeControlStream(int) |
| */ |
| public final int getVolumeControlStream() { |
| return getWindow().getVolumeControlStream(); |
| } |
| |
| /** |
| * Runs the specified action on the UI thread. If the current thread is the UI |
| * thread, then the action is executed immediately. If the current thread is |
| * not the UI thread, the action is posted to the event queue of the UI thread. |
| * |
| * @param action the action to run on the UI thread |
| */ |
| public final void runOnUiThread(Runnable action) { |
| if (Thread.currentThread() != mUiThread) { |
| mHandler.post(action); |
| } else { |
| action.run(); |
| } |
| } |
| |
| /** |
| * Standard implementation of |
| * {@link android.view.LayoutInflater.Factory#onCreateView} used when |
| * inflating with the LayoutInflater returned by {@link #getSystemService}. |
| * This implementation does nothing and is for |
| * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps |
| * should use {@link #onCreateView(View, String, Context, AttributeSet)}. |
| * |
| * @see android.view.LayoutInflater#createView |
| * @see android.view.Window#getLayoutInflater |
| */ |
| public View onCreateView(String name, Context context, AttributeSet attrs) { |
| return null; |
| } |
| |
| /** |
| * Standard implementation of |
| * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} |
| * used when inflating with the LayoutInflater returned by {@link #getSystemService}. |
| * This implementation handles <fragment> tags to embed fragments inside |
| * of the activity. |
| * |
| * @see android.view.LayoutInflater#createView |
| * @see android.view.Window#getLayoutInflater |
| */ |
| public View onCreateView(View parent, String name, Context context, AttributeSet attrs) { |
| if (!"fragment".equals(name)) { |
| return onCreateView(name, context, attrs); |
| } |
| |
| String fname = attrs.getAttributeValue(null, "class"); |
| TypedArray a = |
| context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); |
| if (fname == null) { |
| fname = a.getString(com.android.internal.R.styleable.Fragment_name); |
| } |
| int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID); |
| String tag = a.getString(com.android.internal.R.styleable.Fragment_tag); |
| a.recycle(); |
| |
| int containerId = parent != null ? parent.getId() : 0; |
| if (containerId == View.NO_ID && id == View.NO_ID && tag == null) { |
| throw new IllegalArgumentException(attrs.getPositionDescription() |
| + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname); |
| } |
| |
| // If we restored from a previous state, we may already have |
| // instantiated this fragment from the state and should use |
| // that instance instead of making a new one. |
| Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null; |
| if (fragment == null && tag != null) { |
| fragment = mFragments.findFragmentByTag(tag); |
| } |
| if (fragment == null && containerId != View.NO_ID) { |
| fragment = mFragments.findFragmentById(containerId); |
| } |
| |
| if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x" |
| + Integer.toHexString(id) + " fname=" + fname |
| + " existing=" + fragment); |
| if (fragment == null) { |
| fragment = Fragment.instantiate(this, fname); |
| fragment.mFromLayout = true; |
| fragment.mFragmentId = id != 0 ? id : containerId; |
| fragment.mContainerId = containerId; |
| fragment.mTag = tag; |
| fragment.mInLayout = true; |
| fragment.mImmediateActivity = this; |
| fragment.mFragmentManager = mFragments; |
| fragment.onInflate(attrs, fragment.mSavedFragmentState); |
| mFragments.addFragment(fragment, true); |
| |
| } else if (fragment.mInLayout) { |
| // A fragment already exists and it is not one we restored from |
| // previous state. |
| throw new IllegalArgumentException(attrs.getPositionDescription() |
| + ": Duplicate id 0x" + Integer.toHexString(id) |
| + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) |
| + " with another fragment for " + fname); |
| } else { |
| // This fragment was retained from a previous instance; get it |
| // going now. |
| fragment.mInLayout = true; |
| fragment.mImmediateActivity = this; |
| // If this fragment is newly instantiated (either right now, or |
| // from last saved state), then give it the attributes to |
| // initialize itself. |
| if (!fragment.mRetaining) { |
| fragment.onInflate(attrs, fragment.mSavedFragmentState); |
| } |
| mFragments.moveToState(fragment); |
| } |
| |
| if (fragment.mView == null) { |
| throw new IllegalStateException("Fragment " + fname |
| + " did not create a view."); |
| } |
| if (id != 0) { |
| fragment.mView.setId(id); |
| } |
| if (fragment.mView.getTag() == null) { |
| fragment.mView.setTag(tag); |
| } |
| return fragment.mView; |
| } |
| |
| /** |
| * Print the Activity's state into the given stream. This gets invoked if |
| * you run "adb shell dumpsys activity <activity_component_name>". |
| * |
| * @param prefix Desired prefix to prepend at each line of output. |
| * @param fd The raw file descriptor that the dump is being sent to. |
| * @param writer The PrintWriter to which you should dump your state. This will be |
| * closed for you after you return. |
| * @param args additional arguments to the dump request. |
| */ |
| public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { |
| writer.print(prefix); writer.print("Local Activity "); |
| writer.print(Integer.toHexString(System.identityHashCode(this))); |
| writer.println(" State:"); |
| String innerPrefix = prefix + " "; |
| writer.print(innerPrefix); writer.print("mResumed="); |
| writer.print(mResumed); writer.print(" mStopped="); |
| writer.print(mStopped); writer.print(" mFinished="); |
| writer.println(mFinished); |
| writer.print(innerPrefix); writer.print("mLoadersStarted="); |
| writer.println(mLoadersStarted); |
| writer.print(innerPrefix); writer.print("mChangingConfigurations="); |
| writer.println(mChangingConfigurations); |
| writer.print(innerPrefix); writer.print("mCurrentConfig="); |
| writer.println(mCurrentConfig); |
| if (mLoaderManager != null) { |
| writer.print(prefix); writer.print("Loader Manager "); |
| writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); |
| writer.println(":"); |
| mLoaderManager.dump(prefix + " ", fd, writer, args); |
| } |
| mFragments.dump(prefix, fd, writer, args); |
| } |
| |
| /** |
| * Bit indicating that this activity is "immersive" and should not be |
| * interrupted by notifications if possible. |
| * |
| * This value is initially set by the manifest property |
| * <code>android:immersive</code> but may be changed at runtime by |
| * {@link #setImmersive}. |
| * |
| * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE |
| * @hide |
| */ |
| public boolean isImmersive() { |
| try { |
| return ActivityManagerNative.getDefault().isImmersive(mToken); |
| } catch (RemoteException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Adjust the current immersive mode setting. |
| * |
| * Note that changing this value will have no effect on the activity's |
| * {@link android.content.pm.ActivityInfo} structure; that is, if |
| * <code>android:immersive</code> is set to <code>true</code> |
| * in the application's manifest entry for this activity, the {@link |
| * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will |
| * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE |
| * FLAG_IMMERSIVE} bit set. |
| * |
| * @see #isImmersive |
| * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE |
| * @hide |
| */ |
| public void setImmersive(boolean i) { |
| try { |
| ActivityManagerNative.getDefault().setImmersive(mToken, i); |
| } catch (RemoteException e) { |
| // pass |
| } |
| } |
| |
| /** |
| * Start an action mode. |
| * |
| * @param callback Callback that will manage lifecycle events for this context mode |
| * @return The ContextMode that was started, or null if it was canceled |
| * |
| * @see ActionMode |
| */ |
| public ActionMode startActionMode(ActionMode.Callback callback) { |
| return mWindow.getDecorView().startActionMode(callback); |
| } |
| |
| /** |
| * Give the Activity a chance to control the UI for an action mode requested |
| * by the system. |
| * |
| * <p>Note: If you are looking for a notification callback that an action mode |
| * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p> |
| * |
| * @param callback The callback that should control the new action mode |
| * @return The new action mode, or <code>null</code> if the activity does not want to |
| * provide special handling for this action mode. (It will be handled by the system.) |
| */ |
| public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) { |
| initActionBar(); |
| if (mActionBar != null) { |
| return mActionBar.startActionMode(callback); |
| } |
| return null; |
| } |
| |
| /** |
| * Notifies the Activity that an action mode has been started. |
| * Activity subclasses overriding this method should call the superclass implementation. |
| * |
| * @param mode The new action mode. |
| */ |
| public void onActionModeStarted(ActionMode mode) { |
| } |
| |
| /** |
| * Notifies the activity that an action mode has finished. |
| * Activity subclasses overriding this method should call the superclass implementation. |
| * |
| * @param mode The action mode that just finished. |
| */ |
| public void onActionModeFinished(ActionMode mode) { |
| } |
| |
| // ------------------ Internal API ------------------ |
| |
| final void setParent(Activity parent) { |
| mParent = parent; |
| } |
| |
| final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token, |
| Application application, Intent intent, ActivityInfo info, CharSequence title, |
| Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances, |
| Configuration config) { |
| attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id, |
| lastNonConfigurationInstances, config); |
| } |
| |
| final void attach(Context context, ActivityThread aThread, |
| Instrumentation instr, IBinder token, int ident, |
| Application application, Intent intent, ActivityInfo info, |
| CharSequence title, Activity parent, String id, |
| NonConfigurationInstances lastNonConfigurationInstances, |
| Configuration config) { |
| attachBaseContext(context); |
| |
| mFragments.attachActivity(this); |
| |
| mWindow = PolicyManager.makeNewWindow(this); |
| mWindow.setCallback(this); |
| mWindow.getLayoutInflater().setPrivateFactory(this); |
| if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { |
| mWindow.setSoftInputMode(info.softInputMode); |
| } |
| mUiThread = Thread.currentThread(); |
| |
| mMainThread = aThread; |
| mInstrumentation = instr; |
| mToken = token; |
| mIdent = ident; |
| mApplication = application; |
| mIntent = intent; |
| mComponent = intent.getComponent(); |
| mActivityInfo = info; |
| mTitle = title; |
| mParent = parent; |
| mEmbeddedID = id; |
| mLastNonConfigurationInstances = lastNonConfigurationInstances; |
| |
| mWindow.setWindowManager(null, mToken, mComponent.flattenToString(), |
| (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); |
| if (mParent != null) { |
| mWindow.setContainer(mParent.getWindow()); |
| } |
| mWindowManager = mWindow.getWindowManager(); |
| mCurrentConfig = config; |
| } |
| |
| final IBinder getActivityToken() { |
| return mParent != null ? mParent.getActivityToken() : mToken; |
| } |
| |
| final void performCreate(Bundle icicle) { |
| onCreate(icicle); |
| mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( |
| com.android.internal.R.styleable.Window_windowNoDisplay, false); |
| mFragments.dispatchActivityCreated(); |
| } |
| |
| final void performStart() { |
| mFragments.noteStateNotSaved(); |
| mCalled = false; |
| mFragments.execPendingActions(); |
| mInstrumentation.callActivityOnStart(this); |
| if (!mCalled) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onStart()"); |
| } |
| mFragments.dispatchStart(); |
| if (mAllLoaderManagers != null) { |
| for (int i=mAllLoaderManagers.size()-1; i>=0; i--) { |
| mAllLoaderManagers.valueAt(i).finishRetain(); |
| } |
| } |
| } |
| |
| final void performRestart() { |
| mFragments.noteStateNotSaved(); |
| |
| synchronized (mManagedCursors) { |
| final int N = mManagedCursors.size(); |
| for (int i=0; i<N; i++) { |
| ManagedCursor mc = mManagedCursors.get(i); |
| if (mc.mReleased || mc.mUpdated) { |
| if (!mc.mCursor.requery()) { |
| throw new IllegalStateException( |
| "trying to requery an already closed cursor"); |
| } |
| mc.mReleased = false; |
| mc.mUpdated = false; |
| } |
| } |
| } |
| |
| if (mStopped) { |
| mStopped = false; |
| mCalled = false; |
| mInstrumentation.callActivityOnRestart(this); |
| if (!mCalled) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onRestart()"); |
| } |
| performStart(); |
| } |
| } |
| |
| final void performResume() { |
| performRestart(); |
| |
| mFragments.execPendingActions(); |
| |
| mLastNonConfigurationInstances = null; |
| |
| mCalled = false; |
| // mResumed is set by the instrumentation |
| mInstrumentation.callActivityOnResume(this); |
| if (!mCalled) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onResume()"); |
| } |
| |
| // Now really resume, and install the current status bar and menu. |
| mCalled = false; |
| |
| mFragments.dispatchResume(); |
| mFragments.execPendingActions(); |
| |
| onPostResume(); |
| if (!mCalled) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onPostResume()"); |
| } |
| } |
| |
| final void performPause() { |
| mFragments.dispatchPause(); |
| mCalled = false; |
| onPause(); |
| mResumed = false; |
| if (!mCalled && getApplicationInfo().targetSdkVersion |
| >= android.os.Build.VERSION_CODES.GINGERBREAD) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onPause()"); |
| } |
| mResumed = false; |
| } |
| |
| final void performUserLeaving() { |
| onUserInteraction(); |
| onUserLeaveHint(); |
| } |
| |
| final void performStop() { |
| if (mLoadersStarted) { |
| mLoadersStarted = false; |
| if (mLoaderManager != null) { |
| if (!mChangingConfigurations) { |
| mLoaderManager.doStop(); |
| } else { |
| mLoaderManager.doRetain(); |
| } |
| } |
| } |
| |
| if (!mStopped) { |
| if (mWindow != null) { |
| mWindow.closeAllPanels(); |
| } |
| |
| mFragments.dispatchStop(); |
| |
| mCalled = false; |
| mInstrumentation.callActivityOnStop(this); |
| if (!mCalled) { |
| throw new SuperNotCalledException( |
| "Activity " + mComponent.toShortString() + |
| " did not call through to super.onStop()"); |
| } |
| |
| synchronized (mManagedCursors) { |
| final int N = mManagedCursors.size(); |
| for (int i=0; i<N; i++) { |
| ManagedCursor mc = mManagedCursors.get(i); |
| if (!mc.mReleased) { |
| mc.mCursor.deactivate(); |
| mc.mReleased = true; |
| } |
| } |
| } |
| |
| mStopped = true; |
| } |
| mResumed = false; |
| |
| // Check for Activity leaks, if enabled. |
| StrictMode.conditionallyCheckInstanceCounts(); |
| } |
| |
| final void performDestroy() { |
| mWindow.destroy(); |
| mFragments.dispatchDestroy(); |
| onDestroy(); |
| if (mLoaderManager != null) { |
| mLoaderManager.doDestroy(); |
| } |
| } |
| |
| /** |
| * @hide |
| */ |
| public final boolean isResumed() { |
| return mResumed; |
| } |
| |
| void dispatchActivityResult(String who, int requestCode, |
| int resultCode, Intent data) { |
| if (Config.LOGV) Log.v( |
| TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode |
| + ", resCode=" + resultCode + ", data=" + data); |
| mFragments.noteStateNotSaved(); |
| if (who == null) { |
| onActivityResult(requestCode, resultCode, data); |
| } else { |
| Fragment frag = mFragments.findFragmentByWho(who); |
| if (frag != null) { |
| frag.onActivityResult(requestCode, resultCode, data); |
| } |
| } |
| } |
| } |