Intent.java revision ed06578eddde07abe325fa4c92910bb7246cd49f
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.content;
18
19import org.xmlpull.v1.XmlPullParser;
20import org.xmlpull.v1.XmlPullParserException;
21
22import android.annotation.SdkConstant;
23import android.annotation.SdkConstant.SdkConstantType;
24import android.content.pm.ActivityInfo;
25import android.content.pm.PackageManager;
26import android.content.pm.ResolveInfo;
27import android.content.res.Resources;
28import android.content.res.TypedArray;
29import android.net.Uri;
30import android.os.Bundle;
31import android.os.IBinder;
32import android.os.Parcel;
33import android.os.Parcelable;
34import android.util.AttributeSet;
35import android.util.Log;
36import com.android.internal.util.XmlUtils;
37
38import java.io.IOException;
39import java.io.Serializable;
40import java.net.URISyntaxException;
41import java.util.ArrayList;
42import java.util.HashSet;
43import java.util.Iterator;
44import java.util.Set;
45
46/**
47 * An intent is an abstract description of an operation to be performed.  It
48 * can be used with {@link Context#startActivity(Intent) startActivity} to
49 * launch an {@link android.app.Activity},
50 * {@link android.content.Context#sendBroadcast(Intent) broadcastIntent} to
51 * send it to any interested {@link BroadcastReceiver BroadcastReceiver} components,
52 * and {@link android.content.Context#startService} or
53 * {@link android.content.Context#bindService} to communicate with a
54 * background {@link android.app.Service}.
55 *
56 * <p>An Intent provides a facility for performing late runtime binding between
57 * the code in different applications.  Its most significant use is in the
58 * launching of activities, where it can be thought of as the glue between
59 * activities. It is
60 * basically a passive data structure holding an abstract description of an
61 * action to be performed. The primary pieces of information in an intent
62 * are:</p>
63 *
64 * <ul>
65 *   <li> <p><b>action</b> -- The general action to be performed, such as
66 *     {@link #ACTION_VIEW}, {@link #ACTION_EDIT}, {@link #ACTION_MAIN},
67 *     etc.</p>
68 *   </li>
69 *   <li> <p><b>data</b> -- The data to operate on, such as a person record
70 *     in the contacts database, expressed as a {@link android.net.Uri}.</p>
71 *   </li>
72 * </ul>
73 *
74 *
75 * <p>Some examples of action/data pairs are:</p>
76 *
77 * <ul>
78 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/1</i></b> -- Display
79 *     information about the person whose identifier is "1".</p>
80 *   </li>
81 *   <li> <p><b>{@link #ACTION_DIAL} <i>content://contacts/1</i></b> -- Display
82 *     the phone dialer with the person filled in.</p>
83 *   </li>
84 *   <li> <p><b>{@link #ACTION_VIEW} <i>tel:123</i></b> -- Display
85 *     the phone dialer with the given number filled in.  Note how the
86 *     VIEW action does what what is considered the most reasonable thing for
87 *     a particular URI.</p>
88 *   </li>
89 *   <li> <p><b>{@link #ACTION_DIAL} <i>tel:123</i></b> -- Display
90 *     the phone dialer with the given number filled in.</p>
91 *   </li>
92 *   <li> <p><b>{@link #ACTION_EDIT} <i>content://contacts/1</i></b> -- Edit
93 *     information about the person whose identifier is "1".</p>
94 *   </li>
95 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/</i></b> -- Display
96 *     a list of people, which the user can browse through.  This example is a
97 *     typical top-level entry into the Contacts application, showing you the
98 *     list of people. Selecting a particular person to view would result in a
99 *     new intent { <b>{@link #ACTION_VIEW} <i>content://contacts/N</i></b> }
100 *     being used to start an activity to display that person.</p>
101 *   </li>
102 * </ul>
103 *
104 * <p>In addition to these primary attributes, there are a number of secondary
105 * attributes that you can also include with an intent:</p>
106 *
107 * <ul>
108 *     <li> <p><b>category</b> -- Gives additional information about the action
109 *         to execute.  For example, {@link #CATEGORY_LAUNCHER} means it should
110 *         appear in the Launcher as a top-level application, while
111 *         {@link #CATEGORY_ALTERNATIVE} means it should be included in a list
112 *         of alternative actions the user can perform on a piece of data.</p>
113 *     <li> <p><b>type</b> -- Specifies an explicit type (a MIME type) of the
114 *         intent data.  Normally the type is inferred from the data itself.
115 *         By setting this attribute, you disable that evaluation and force
116 *         an explicit type.</p>
117 *     <li> <p><b>component</b> -- Specifies an explicit name of a component
118 *         class to use for the intent.  Normally this is determined by looking
119 *         at the other information in the intent (the action, data/type, and
120 *         categories) and matching that with a component that can handle it.
121 *         If this attribute is set then none of the evaluation is performed,
122 *         and this component is used exactly as is.  By specifying this attribute,
123 *         all of the other Intent attributes become optional.</p>
124 *     <li> <p><b>extras</b> -- This is a {@link Bundle} of any additional information.
125 *         This can be used to provide extended information to the component.
126 *         For example, if we have a action to send an e-mail message, we could
127 *         also include extra pieces of data here to supply a subject, body,
128 *         etc.</p>
129 * </ul>
130 *
131 * <p>Here are some examples of other operations you can specify as intents
132 * using these additional parameters:</p>
133 *
134 * <ul>
135 *   <li> <p><b>{@link #ACTION_MAIN} with category {@link #CATEGORY_HOME}</b> --
136 *     Launch the home screen.</p>
137 *   </li>
138 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
139 *     <i>{@link android.provider.Contacts.Phones#CONTENT_URI
140 *     vnd.android.cursor.item/phone}</i></b>
141 *     -- Display the list of people's phone numbers, allowing the user to
142 *     browse through them and pick one and return it to the parent activity.</p>
143 *   </li>
144 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
145 *     <i>*{@literal /}*</i> and category {@link #CATEGORY_OPENABLE}</b>
146 *     -- Display all pickers for data that can be opened with
147 *     {@link ContentResolver#openInputStream(Uri) ContentResolver.openInputStream()},
148 *     allowing the user to pick one of them and then some data inside of it
149 *     and returning the resulting URI to the caller.  This can be used,
150 *     for example, in an e-mail application to allow the user to pick some
151 *     data to include as an attachment.</p>
152 *   </li>
153 * </ul>
154 *
155 * <p>There are a variety of standard Intent action and category constants
156 * defined in the Intent class, but applications can also define their own.
157 * These strings use java style scoping, to ensure they are unique -- for
158 * example, the standard {@link #ACTION_VIEW} is called
159 * "android.app.action.VIEW".</p>
160 *
161 * <p>Put together, the set of actions, data types, categories, and extra data
162 * defines a language for the system allowing for the expression of phrases
163 * such as "call john smith's cell".  As applications are added to the system,
164 * they can extend this language by adding new actions, types, and categories, or
165 * they can modify the behavior of existing phrases by supplying their own
166 * activities that handle them.</p>
167 *
168 * <a name="IntentResolution"></a>
169 * <h3>Intent Resolution</h3>
170 *
171 * <p>There are two primary forms of intents you will use.
172 *
173 * <ul>
174 *     <li> <p><b>Explicit Intents</b> have specified a component (via
175 *     {@link #setComponent} or {@link #setClass}), which provides the exact
176 *     class to be run.  Often these will not include any other information,
177 *     simply being a way for an application to launch various internal
178 *     activities it has as the user interacts with the application.
179 *
180 *     <li> <p><b>Implicit Intents</b> have not specified a component;
181 *     instead, they must include enough information for the system to
182 *     determine which of the available components is best to run for that
183 *     intent.
184 * </ul>
185 *
186 * <p>When using implicit intents, given such an arbitrary intent we need to
187 * know what to do with it. This is handled by the process of <em>Intent
188 * resolution</em>, which maps an Intent to an {@link android.app.Activity},
189 * {@link BroadcastReceiver}, or {@link android.app.Service} (or sometimes two or
190 * more activities/receivers) that can handle it.</p>
191 *
192 * <p>The intent resolution mechanism basically revolves around matching an
193 * Intent against all of the &lt;intent-filter&gt; descriptions in the
194 * installed application packages.  (Plus, in the case of broadcasts, any {@link BroadcastReceiver}
195 * objects explicitly registered with {@link Context#registerReceiver}.)  More
196 * details on this can be found in the documentation on the {@link
197 * IntentFilter} class.</p>
198 *
199 * <p>There are three pieces of information in the Intent that are used for
200 * resolution: the action, type, and category.  Using this information, a query
201 * is done on the {@link PackageManager} for a component that can handle the
202 * intent. The appropriate component is determined based on the intent
203 * information supplied in the <code>AndroidManifest.xml</code> file as
204 * follows:</p>
205 *
206 * <ul>
207 *     <li> <p>The <b>action</b>, if given, must be listed by the component as
208 *         one it handles.</p>
209 *     <li> <p>The <b>type</b> is retrieved from the Intent's data, if not
210 *         already supplied in the Intent.  Like the action, if a type is
211 *         included in the intent (either explicitly or implicitly in its
212 *         data), then this must be listed by the component as one it handles.</p>
213 *     <li> For data that is not a <code>content:</code> URI and where no explicit
214 *         type is included in the Intent, instead the <b>scheme</b> of the
215 *         intent data (such as <code>http:</code> or <code>mailto:</code>) is
216 *         considered. Again like the action, if we are matching a scheme it
217 *         must be listed by the component as one it can handle.
218 *     <li> <p>The <b>categories</b>, if supplied, must <em>all</em> be listed
219 *         by the activity as categories it handles.  That is, if you include
220 *         the categories {@link #CATEGORY_LAUNCHER} and
221 *         {@link #CATEGORY_ALTERNATIVE}, then you will only resolve to components
222 *         with an intent that lists <em>both</em> of those categories.
223 *         Activities will very often need to support the
224 *         {@link #CATEGORY_DEFAULT} so that they can be found by
225 *         {@link Context#startActivity Context.startActivity()}.</p>
226 * </ul>
227 *
228 * <p>For example, consider the Note Pad sample application that
229 * allows user to browse through a list of notes data and view details about
230 * individual items.  Text in italics indicate places were you would replace a
231 * name with one specific to your own package.</p>
232 *
233 * <pre> &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
234 *       package="<i>com.android.notepad</i>"&gt;
235 *     &lt;application android:icon="@drawable/app_notes"
236 *             android:label="@string/app_name"&gt;
237 *
238 *         &lt;provider class=".NotePadProvider"
239 *                 android:authorities="<i>com.google.provider.NotePad</i>" /&gt;
240 *
241 *         &lt;activity class=".NotesList" android:label="@string/title_notes_list"&gt;
242 *             &lt;intent-filter&gt;
243 *                 &lt;action android:name="android.intent.action.MAIN" /&gt;
244 *                 &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
245 *             &lt;/intent-filter&gt;
246 *             &lt;intent-filter&gt;
247 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
248 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
249 *                 &lt;action android:name="android.intent.action.PICK" /&gt;
250 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
251 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
252 *             &lt;/intent-filter&gt;
253 *             &lt;intent-filter&gt;
254 *                 &lt;action android:name="android.intent.action.GET_CONTENT" /&gt;
255 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
256 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
257 *             &lt;/intent-filter&gt;
258 *         &lt;/activity&gt;
259 *
260 *         &lt;activity class=".NoteEditor" android:label="@string/title_note"&gt;
261 *             &lt;intent-filter android:label="@string/resolve_edit"&gt;
262 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
263 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
264 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
265 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
266 *             &lt;/intent-filter&gt;
267 *
268 *             &lt;intent-filter&gt;
269 *                 &lt;action android:name="android.intent.action.INSERT" /&gt;
270 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
271 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
272 *             &lt;/intent-filter&gt;
273 *
274 *         &lt;/activity&gt;
275 *
276 *         &lt;activity class=".TitleEditor" android:label="@string/title_edit_title"
277 *                 android:theme="@android:style/Theme.Dialog"&gt;
278 *             &lt;intent-filter android:label="@string/resolve_title"&gt;
279 *                 &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
280 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
281 *                 &lt;category android:name="android.intent.category.ALTERNATIVE" /&gt;
282 *                 &lt;category android:name="android.intent.category.SELECTED_ALTERNATIVE" /&gt;
283 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
284 *             &lt;/intent-filter&gt;
285 *         &lt;/activity&gt;
286 *
287 *     &lt;/application&gt;
288 * &lt;/manifest&gt;</pre>
289 *
290 * <p>The first activity,
291 * <code>com.android.notepad.NotesList</code>, serves as our main
292 * entry into the app.  It can do three things as described by its three intent
293 * templates:
294 * <ol>
295 * <li><pre>
296 * &lt;intent-filter&gt;
297 *     &lt;action android:name="{@link #ACTION_MAIN android.intent.action.MAIN}" /&gt;
298 *     &lt;category android:name="{@link #CATEGORY_LAUNCHER android.intent.category.LAUNCHER}" /&gt;
299 * &lt;/intent-filter&gt;</pre>
300 * <p>This provides a top-level entry into the NotePad application: the standard
301 * MAIN action is a main entry point (not requiring any other information in
302 * the Intent), and the LAUNCHER category says that this entry point should be
303 * listed in the application launcher.</p>
304 * <li><pre>
305 * &lt;intent-filter&gt;
306 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
307 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
308 *     &lt;action android:name="{@link #ACTION_PICK android.intent.action.PICK}" /&gt;
309 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
310 *     &lt;data mimeType:name="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
311 * &lt;/intent-filter&gt;</pre>
312 * <p>This declares the things that the activity can do on a directory of
313 * notes.  The type being supported is given with the &lt;type&gt; tag, where
314 * <code>vnd.android.cursor.dir/vnd.google.note</code> is a URI from which
315 * a Cursor of zero or more items (<code>vnd.android.cursor.dir</code>) can
316 * be retrieved which holds our note pad data (<code>vnd.google.note</code>).
317 * The activity allows the user to view or edit the directory of data (via
318 * the VIEW and EDIT actions), or to pick a particular note and return it
319 * to the caller (via the PICK action).  Note also the DEFAULT category
320 * supplied here: this is <em>required</em> for the
321 * {@link Context#startActivity Context.startActivity} method to resolve your
322 * activity when its component name is not explicitly specified.</p>
323 * <li><pre>
324 * &lt;intent-filter&gt;
325 *     &lt;action android:name="{@link #ACTION_GET_CONTENT android.intent.action.GET_CONTENT}" /&gt;
326 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
327 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
328 * &lt;/intent-filter&gt;</pre>
329 * <p>This filter describes the ability return to the caller a note selected by
330 * the user without needing to know where it came from.  The data type
331 * <code>vnd.android.cursor.item/vnd.google.note</code> is a URI from which
332 * a Cursor of exactly one (<code>vnd.android.cursor.item</code>) item can
333 * be retrieved which contains our note pad data (<code>vnd.google.note</code>).
334 * The GET_CONTENT action is similar to the PICK action, where the activity
335 * will return to its caller a piece of data selected by the user.  Here,
336 * however, the caller specifies the type of data they desire instead of
337 * the type of data the user will be picking from.</p>
338 * </ol>
339 *
340 * <p>Given these capabilities, the following intents will resolve to the
341 * NotesList activity:</p>
342 *
343 * <ul>
344 *     <li> <p><b>{ action=android.app.action.MAIN }</b> matches all of the
345 *         activities that can be used as top-level entry points into an
346 *         application.</p>
347 *     <li> <p><b>{ action=android.app.action.MAIN,
348 *         category=android.app.category.LAUNCHER }</b> is the actual intent
349 *         used by the Launcher to populate its top-level list.</p>
350 *     <li> <p><b>{ action=android.app.action.VIEW
351 *          data=content://com.google.provider.NotePad/notes }</b>
352 *         displays a list of all the notes under
353 *         "content://com.google.provider.NotePad/notes", which
354 *         the user can browse through and see the details on.</p>
355 *     <li> <p><b>{ action=android.app.action.PICK
356 *          data=content://com.google.provider.NotePad/notes }</b>
357 *         provides a list of the notes under
358 *         "content://com.google.provider.NotePad/notes", from which
359 *         the user can pick a note whose data URL is returned back to the caller.</p>
360 *     <li> <p><b>{ action=android.app.action.GET_CONTENT
361 *          type=vnd.android.cursor.item/vnd.google.note }</b>
362 *         is similar to the pick action, but allows the caller to specify the
363 *         kind of data they want back so that the system can find the appropriate
364 *         activity to pick something of that data type.</p>
365 * </ul>
366 *
367 * <p>The second activity,
368 * <code>com.android.notepad.NoteEditor</code>, shows the user a single
369 * note entry and allows them to edit it.  It can do two things as described
370 * by its two intent templates:
371 * <ol>
372 * <li><pre>
373 * &lt;intent-filter android:label="@string/resolve_edit"&gt;
374 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
375 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
376 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
377 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
378 * &lt;/intent-filter&gt;</pre>
379 * <p>The first, primary, purpose of this activity is to let the user interact
380 * with a single note, as decribed by the MIME type
381 * <code>vnd.android.cursor.item/vnd.google.note</code>.  The activity can
382 * either VIEW a note or allow the user to EDIT it.  Again we support the
383 * DEFAULT category to allow the activity to be launched without explicitly
384 * specifying its component.</p>
385 * <li><pre>
386 * &lt;intent-filter&gt;
387 *     &lt;action android:name="{@link #ACTION_INSERT android.intent.action.INSERT}" /&gt;
388 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
389 *     &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
390 * &lt;/intent-filter&gt;</pre>
391 * <p>The secondary use of this activity is to insert a new note entry into
392 * an existing directory of notes.  This is used when the user creates a new
393 * note: the INSERT action is executed on the directory of notes, causing
394 * this activity to run and have the user create the new note data which
395 * it then adds to the content provider.</p>
396 * </ol>
397 *
398 * <p>Given these capabilities, the following intents will resolve to the
399 * NoteEditor activity:</p>
400 *
401 * <ul>
402 *     <li> <p><b>{ action=android.app.action.VIEW
403 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
404 *         shows the user the content of note <var>{ID}</var>.</p>
405 *     <li> <p><b>{ action=android.app.action.EDIT
406 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
407 *         allows the user to edit the content of note <var>{ID}</var>.</p>
408 *     <li> <p><b>{ action=android.app.action.INSERT
409 *          data=content://com.google.provider.NotePad/notes }</b>
410 *         creates a new, empty note in the notes list at
411 *         "content://com.google.provider.NotePad/notes"
412 *         and allows the user to edit it.  If they keep their changes, the URI
413 *         of the newly created note is returned to the caller.</p>
414 * </ul>
415 *
416 * <p>The last activity,
417 * <code>com.android.notepad.TitleEditor</code>, allows the user to
418 * edit the title of a note.  This could be implemented as a class that the
419 * application directly invokes (by explicitly setting its component in
420 * the Intent), but here we show a way you can publish alternative
421 * operations on existing data:</p>
422 *
423 * <pre>
424 * &lt;intent-filter android:label="@string/resolve_title"&gt;
425 *     &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
426 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
427 *     &lt;category android:name="{@link #CATEGORY_ALTERNATIVE android.intent.category.ALTERNATIVE}" /&gt;
428 *     &lt;category android:name="{@link #CATEGORY_SELECTED_ALTERNATIVE android.intent.category.SELECTED_ALTERNATIVE}" /&gt;
429 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
430 * &lt;/intent-filter&gt;</pre>
431 *
432 * <p>In the single intent template here, we
433 * have created our own private action called
434 * <code>com.android.notepad.action.EDIT_TITLE</code> which means to
435 * edit the title of a note.  It must be invoked on a specific note
436 * (data type <code>vnd.android.cursor.item/vnd.google.note</code>) like the previous
437 * view and edit actions, but here displays and edits the title contained
438 * in the note data.
439 *
440 * <p>In addition to supporting the default category as usual, our title editor
441 * also supports two other standard categories: ALTERNATIVE and
442 * SELECTED_ALTERNATIVE.  Implementing
443 * these categories allows others to find the special action it provides
444 * without directly knowing about it, through the
445 * {@link android.content.pm.PackageManager#queryIntentActivityOptions} method, or
446 * more often to build dynamic menu items with
447 * {@link android.view.Menu#addIntentOptions}.  Note that in the intent
448 * template here was also supply an explicit name for the template
449 * (via <code>android:label="@string/resolve_title"</code>) to better control
450 * what the user sees when presented with this activity as an alternative
451 * action to the data they are viewing.
452 *
453 * <p>Given these capabilities, the following intent will resolve to the
454 * TitleEditor activity:</p>
455 *
456 * <ul>
457 *     <li> <p><b>{ action=com.android.notepad.action.EDIT_TITLE
458 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
459 *         displays and allows the user to edit the title associated
460 *         with note <var>{ID}</var>.</p>
461 * </ul>
462 *
463 * <h3>Standard Activity Actions</h3>
464 *
465 * <p>These are the current standard actions that Intent defines for launching
466 * activities (usually through {@link Context#startActivity}.  The most
467 * important, and by far most frequently used, are {@link #ACTION_MAIN} and
468 * {@link #ACTION_EDIT}.
469 *
470 * <ul>
471 *     <li> {@link #ACTION_MAIN}
472 *     <li> {@link #ACTION_VIEW}
473 *     <li> {@link #ACTION_ATTACH_DATA}
474 *     <li> {@link #ACTION_EDIT}
475 *     <li> {@link #ACTION_PICK}
476 *     <li> {@link #ACTION_CHOOSER}
477 *     <li> {@link #ACTION_GET_CONTENT}
478 *     <li> {@link #ACTION_DIAL}
479 *     <li> {@link #ACTION_CALL}
480 *     <li> {@link #ACTION_SEND}
481 *     <li> {@link #ACTION_SENDTO}
482 *     <li> {@link #ACTION_ANSWER}
483 *     <li> {@link #ACTION_INSERT}
484 *     <li> {@link #ACTION_DELETE}
485 *     <li> {@link #ACTION_RUN}
486 *     <li> {@link #ACTION_SYNC}
487 *     <li> {@link #ACTION_PICK_ACTIVITY}
488 *     <li> {@link #ACTION_SEARCH}
489 *     <li> {@link #ACTION_WEB_SEARCH}
490 *     <li> {@link #ACTION_FACTORY_TEST}
491 * </ul>
492 *
493 * <h3>Standard Broadcast Actions</h3>
494 *
495 * <p>These are the current standard actions that Intent defines for receiving
496 * broadcasts (usually through {@link Context#registerReceiver} or a
497 * &lt;receiver&gt; tag in a manifest).
498 *
499 * <ul>
500 *     <li> {@link #ACTION_TIME_TICK}
501 *     <li> {@link #ACTION_TIME_CHANGED}
502 *     <li> {@link #ACTION_TIMEZONE_CHANGED}
503 *     <li> {@link #ACTION_BOOT_COMPLETED}
504 *     <li> {@link #ACTION_PACKAGE_ADDED}
505 *     <li> {@link #ACTION_PACKAGE_CHANGED}
506 *     <li> {@link #ACTION_PACKAGE_REMOVED}
507 *     <li> {@link #ACTION_PACKAGE_RESTARTED}
508 *     <li> {@link #ACTION_PACKAGE_DATA_CLEARED}
509 *     <li> {@link #ACTION_UID_REMOVED}
510 *     <li> {@link #ACTION_BATTERY_CHANGED}
511 *     <li> {@link #ACTION_POWER_CONNECTED}
512 *     <li> {@link #ACTION_POWER_DISCONNECTED}
513 *     <li> {@link #ACTION_SHUTDOWN}
514 * </ul>
515 *
516 * <h3>Standard Categories</h3>
517 *
518 * <p>These are the current standard categories that can be used to further
519 * clarify an Intent via {@link #addCategory}.
520 *
521 * <ul>
522 *     <li> {@link #CATEGORY_DEFAULT}
523 *     <li> {@link #CATEGORY_BROWSABLE}
524 *     <li> {@link #CATEGORY_TAB}
525 *     <li> {@link #CATEGORY_ALTERNATIVE}
526 *     <li> {@link #CATEGORY_SELECTED_ALTERNATIVE}
527 *     <li> {@link #CATEGORY_LAUNCHER}
528 *     <li> {@link #CATEGORY_INFO}
529 *     <li> {@link #CATEGORY_HOME}
530 *     <li> {@link #CATEGORY_PREFERENCE}
531 *     <li> {@link #CATEGORY_TEST}
532 * </ul>
533 *
534 * <h3>Standard Extra Data</h3>
535 *
536 * <p>These are the current standard fields that can be used as extra data via
537 * {@link #putExtra}.
538 *
539 * <ul>
540 *     <li> {@link #EXTRA_TEMPLATE}
541 *     <li> {@link #EXTRA_INTENT}
542 *     <li> {@link #EXTRA_STREAM}
543 *     <li> {@link #EXTRA_TEXT}
544 * </ul>
545 *
546 * <h3>Flags</h3>
547 *
548 * <p>These are the possible flags that can be used in the Intent via
549 * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
550 * of all possible flags.
551 */
552public class Intent implements Parcelable {
553    // ---------------------------------------------------------------------
554    // ---------------------------------------------------------------------
555    // Standard intent activity actions (see action variable).
556
557    /**
558     *  Activity Action: Start as a main entry point, does not expect to
559     *  receive data.
560     *  <p>Input: nothing
561     *  <p>Output: nothing
562     */
563    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
564    public static final String ACTION_MAIN = "android.intent.action.MAIN";
565
566    /**
567     * Activity Action: Display the data to the user.  This is the most common
568     * action performed on data -- it is the generic action you can use on
569     * a piece of data to get the most reasonable thing to occur.  For example,
570     * when used on a contacts entry it will view the entry; when used on a
571     * mailto: URI it will bring up a compose window filled with the information
572     * supplied by the URI; when used with a tel: URI it will invoke the
573     * dialer.
574     * <p>Input: {@link #getData} is URI from which to retrieve data.
575     * <p>Output: nothing.
576     */
577    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
578    public static final String ACTION_VIEW = "android.intent.action.VIEW";
579
580    /**
581     * A synonym for {@link #ACTION_VIEW}, the "standard" action that is
582     * performed on a piece of data.
583     */
584    public static final String ACTION_DEFAULT = ACTION_VIEW;
585
586    /**
587     * Used to indicate that some piece of data should be attached to some other
588     * place.  For example, image data could be attached to a contact.  It is up
589     * to the recipient to decide where the data should be attached; the intent
590     * does not specify the ultimate destination.
591     * <p>Input: {@link #getData} is URI of data to be attached.
592     * <p>Output: nothing.
593     */
594    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
595    public static final String ACTION_ATTACH_DATA = "android.intent.action.ATTACH_DATA";
596
597    /**
598     * Activity Action: Provide explicit editable access to the given data.
599     * <p>Input: {@link #getData} is URI of data to be edited.
600     * <p>Output: nothing.
601     */
602    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
603    public static final String ACTION_EDIT = "android.intent.action.EDIT";
604
605    /**
606     * Activity Action: Pick an existing item, or insert a new item, and then edit it.
607     * <p>Input: {@link #getType} is the desired MIME type of the item to create or edit.
608     * The extras can contain type specific data to pass through to the editing/creating
609     * activity.
610     * <p>Output: The URI of the item that was picked.  This must be a content:
611     * URI so that any receiver can access it.
612     */
613    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
614    public static final String ACTION_INSERT_OR_EDIT = "android.intent.action.INSERT_OR_EDIT";
615
616    /**
617     * Activity Action: Pick an item from the data, returning what was selected.
618     * <p>Input: {@link #getData} is URI containing a directory of data
619     * (vnd.android.cursor.dir/*) from which to pick an item.
620     * <p>Output: The URI of the item that was picked.
621     */
622    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
623    public static final String ACTION_PICK = "android.intent.action.PICK";
624
625    /**
626     * Activity Action: Creates a shortcut.
627     * <p>Input: Nothing.</p>
628     * <p>Output: An Intent representing the shortcut. The intent must contain three
629     * extras: SHORTCUT_INTENT (value: Intent), SHORTCUT_NAME (value: String),
630     * and SHORTCUT_ICON (value: Bitmap) or SHORTCUT_ICON_RESOURCE
631     * (value: ShortcutIconResource).</p>
632     *
633     * @see #EXTRA_SHORTCUT_INTENT
634     * @see #EXTRA_SHORTCUT_NAME
635     * @see #EXTRA_SHORTCUT_ICON
636     * @see #EXTRA_SHORTCUT_ICON_RESOURCE
637     * @see android.content.Intent.ShortcutIconResource
638     */
639    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
640    public static final String ACTION_CREATE_SHORTCUT = "android.intent.action.CREATE_SHORTCUT";
641
642    /**
643     * The name of the extra used to define the Intent of a shortcut.
644     *
645     * @see #ACTION_CREATE_SHORTCUT
646     */
647    public static final String EXTRA_SHORTCUT_INTENT = "android.intent.extra.shortcut.INTENT";
648    /**
649     * The name of the extra used to define the name of a shortcut.
650     *
651     * @see #ACTION_CREATE_SHORTCUT
652     */
653    public static final String EXTRA_SHORTCUT_NAME = "android.intent.extra.shortcut.NAME";
654    /**
655     * The name of the extra used to define the icon, as a Bitmap, of a shortcut.
656     *
657     * @see #ACTION_CREATE_SHORTCUT
658     */
659    public static final String EXTRA_SHORTCUT_ICON = "android.intent.extra.shortcut.ICON";
660    /**
661     * The name of the extra used to define the icon, as a ShortcutIconResource, of a shortcut.
662     *
663     * @see #ACTION_CREATE_SHORTCUT
664     * @see android.content.Intent.ShortcutIconResource
665     */
666    public static final String EXTRA_SHORTCUT_ICON_RESOURCE =
667            "android.intent.extra.shortcut.ICON_RESOURCE";
668
669    /**
670     * Represents a shortcut/live folder icon resource.
671     *
672     * @see Intent#ACTION_CREATE_SHORTCUT
673     * @see Intent#EXTRA_SHORTCUT_ICON_RESOURCE
674     * @see android.provider.LiveFolders#ACTION_CREATE_LIVE_FOLDER
675     * @see android.provider.LiveFolders#EXTRA_LIVE_FOLDER_ICON
676     */
677    public static class ShortcutIconResource implements Parcelable {
678        /**
679         * The package name of the application containing the icon.
680         */
681        public String packageName;
682
683        /**
684         * The resource name of the icon, including package, name and type.
685         */
686        public String resourceName;
687
688        /**
689         * Creates a new ShortcutIconResource for the specified context and resource
690         * identifier.
691         *
692         * @param context The context of the application.
693         * @param resourceId The resource idenfitier for the icon.
694         * @return A new ShortcutIconResource with the specified's context package name
695         *         and icon resource idenfitier.
696         */
697        public static ShortcutIconResource fromContext(Context context, int resourceId) {
698            ShortcutIconResource icon = new ShortcutIconResource();
699            icon.packageName = context.getPackageName();
700            icon.resourceName = context.getResources().getResourceName(resourceId);
701            return icon;
702        }
703
704        /**
705         * Used to read a ShortcutIconResource from a Parcel.
706         */
707        public static final Parcelable.Creator<ShortcutIconResource> CREATOR =
708            new Parcelable.Creator<ShortcutIconResource>() {
709
710                public ShortcutIconResource createFromParcel(Parcel source) {
711                    ShortcutIconResource icon = new ShortcutIconResource();
712                    icon.packageName = source.readString();
713                    icon.resourceName = source.readString();
714                    return icon;
715                }
716
717                public ShortcutIconResource[] newArray(int size) {
718                    return new ShortcutIconResource[size];
719                }
720            };
721
722        /**
723         * No special parcel contents.
724         */
725        public int describeContents() {
726            return 0;
727        }
728
729        public void writeToParcel(Parcel dest, int flags) {
730            dest.writeString(packageName);
731            dest.writeString(resourceName);
732        }
733
734        @Override
735        public String toString() {
736            return resourceName;
737        }
738    }
739
740    /**
741     * Activity Action: Display an activity chooser, allowing the user to pick
742     * what they want to before proceeding.  This can be used as an alternative
743     * to the standard activity picker that is displayed by the system when
744     * you try to start an activity with multiple possible matches, with these
745     * differences in behavior:
746     * <ul>
747     * <li>You can specify the title that will appear in the activity chooser.
748     * <li>The user does not have the option to make one of the matching
749     * activities a preferred activity, and all possible activities will
750     * always be shown even if one of them is currently marked as the
751     * preferred activity.
752     * </ul>
753     * <p>
754     * This action should be used when the user will naturally expect to
755     * select an activity in order to proceed.  An example if when not to use
756     * it is when the user clicks on a "mailto:" link.  They would naturally
757     * expect to go directly to their mail app, so startActivity() should be
758     * called directly: it will
759     * either launch the current preferred app, or put up a dialog allowing the
760     * user to pick an app to use and optionally marking that as preferred.
761     * <p>
762     * In contrast, if the user is selecting a menu item to send a picture
763     * they are viewing to someone else, there are many different things they
764     * may want to do at this point: send it through e-mail, upload it to a
765     * web service, etc.  In this case the CHOOSER action should be used, to
766     * always present to the user a list of the things they can do, with a
767     * nice title given by the caller such as "Send this photo with:".
768     * <p>
769     * As a convenience, an Intent of this form can be created with the
770     * {@link #createChooser} function.
771     * <p>Input: No data should be specified.  get*Extra must have
772     * a {@link #EXTRA_INTENT} field containing the Intent being executed,
773     * and can optionally have a {@link #EXTRA_TITLE} field containing the
774     * title text to display in the chooser.
775     * <p>Output: Depends on the protocol of {@link #EXTRA_INTENT}.
776     */
777    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
778    public static final String ACTION_CHOOSER = "android.intent.action.CHOOSER";
779
780    /**
781     * Convenience function for creating a {@link #ACTION_CHOOSER} Intent.
782     *
783     * @param target The Intent that the user will be selecting an activity
784     * to perform.
785     * @param title Optional title that will be displayed in the chooser.
786     * @return Return a new Intent object that you can hand to
787     * {@link Context#startActivity(Intent) Context.startActivity()} and
788     * related methods.
789     */
790    public static Intent createChooser(Intent target, CharSequence title) {
791        Intent intent = new Intent(ACTION_CHOOSER);
792        intent.putExtra(EXTRA_INTENT, target);
793        if (title != null) {
794            intent.putExtra(EXTRA_TITLE, title);
795        }
796        return intent;
797    }
798    /**
799     * Activity Action: Allow the user to select a particular kind of data and
800     * return it.  This is different than {@link #ACTION_PICK} in that here we
801     * just say what kind of data is desired, not a URI of existing data from
802     * which the user can pick.  A ACTION_GET_CONTENT could allow the user to
803     * create the data as it runs (for example taking a picture or recording a
804     * sound), let them browser over the web and download the desired data,
805     * etc.
806     * <p>
807     * There are two main ways to use this action: if you want an specific kind
808     * of data, such as a person contact, you set the MIME type to the kind of
809     * data you want and launch it with {@link Context#startActivity(Intent)}.
810     * The system will then launch the best application to select that kind
811     * of data for you.
812     * <p>
813     * You may also be interested in any of a set of types of content the user
814     * can pick.  For example, an e-mail application that wants to allow the
815     * user to add an attachment to an e-mail message can use this action to
816     * bring up a list of all of the types of content the user can attach.
817     * <p>
818     * In this case, you should wrap the GET_CONTENT intent with a chooser
819     * (through {@link #createChooser}), which will give the proper interface
820     * for the user to pick how to send your data and allow you to specify
821     * a prompt indicating what they are doing.  You will usually specify a
822     * broad MIME type (such as image/* or {@literal *}/*), resulting in a
823     * broad range of content types the user can select from.
824     * <p>
825     * When using such a broad GET_CONTENT action, it is often desireable to
826     * only pick from data that can be represented as a stream.  This is
827     * accomplished by requiring the {@link #CATEGORY_OPENABLE} in the Intent.
828     * <p>
829     * Input: {@link #getType} is the desired MIME type to retrieve.  Note
830     * that no URI is supplied in the intent, as there are no constraints on
831     * where the returned data originally comes from.  You may also include the
832     * {@link #CATEGORY_OPENABLE} if you can only accept data that can be
833     * opened as a stream.
834     * <p>
835     * Output: The URI of the item that was picked.  This must be a content:
836     * URI so that any receiver can access it.
837     */
838    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
839    public static final String ACTION_GET_CONTENT = "android.intent.action.GET_CONTENT";
840    /**
841     * Activity Action: Dial a number as specified by the data.  This shows a
842     * UI with the number being dialed, allowing the user to explicitly
843     * initiate the call.
844     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
845     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
846     * number.
847     * <p>Output: nothing.
848     */
849    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
850    public static final String ACTION_DIAL = "android.intent.action.DIAL";
851    /**
852     * Activity Action: Perform a call to someone specified by the data.
853     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
854     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
855     * number.
856     * <p>Output: nothing.
857     *
858     * <p>Note: there will be restrictions on which applications can initiate a
859     * call; most applications should use the {@link #ACTION_DIAL}.
860     * <p>Note: this Intent <strong>cannot</strong> be used to call emergency
861     * numbers.  Applications can <strong>dial</strong> emergency numbers using
862     * {@link #ACTION_DIAL}, however.
863     */
864    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
865    public static final String ACTION_CALL = "android.intent.action.CALL";
866    /**
867     * Activity Action: Perform a call to an emergency number specified by the
868     * data.
869     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
870     * tel: URI of an explicit phone number.
871     * <p>Output: nothing.
872     * @hide
873     */
874    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY";
875    /**
876     * Activity action: Perform a call to any number (emergency or not)
877     * specified by the data.
878     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
879     * tel: URI of an explicit phone number.
880     * <p>Output: nothing.
881     * @hide
882     */
883    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";
884    /**
885     * Activity Action: Send a message to someone specified by the data.
886     * <p>Input: {@link #getData} is URI describing the target.
887     * <p>Output: nothing.
888     */
889    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
890    public static final String ACTION_SENDTO = "android.intent.action.SENDTO";
891    /**
892     * Activity Action: Deliver some data to someone else.  Who the data is
893     * being delivered to is not specified; it is up to the receiver of this
894     * action to ask the user where the data should be sent.
895     * <p>
896     * When launching a SEND intent, you should usually wrap it in a chooser
897     * (through {@link #createChooser}), which will give the proper interface
898     * for the user to pick how to send your data and allow you to specify
899     * a prompt indicating what they are doing.
900     * <p>
901     * Input: {@link #getType} is the MIME type of the data being sent.
902     * get*Extra can have either a {@link #EXTRA_TEXT}
903     * or {@link #EXTRA_STREAM} field, containing the data to be sent.  If
904     * using EXTRA_TEXT, the MIME type should be "text/plain"; otherwise it
905     * should be the MIME type of the data in EXTRA_STREAM.  Use {@literal *}/*
906     * if the MIME type is unknown (this will only allow senders that can
907     * handle generic data streams).
908     * <p>
909     * Optional standard extras, which may be interpreted by some recipients as
910     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
911     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
912     * <p>
913     * Output: nothing.
914     */
915    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
916    public static final String ACTION_SEND = "android.intent.action.SEND";
917    /**
918     * Activity Action: Deliver multiple data to someone else.
919     * <p>
920     * Like ACTION_SEND, except the data is multiple.
921     * <p>
922     * Input: {@link #getType} is the MIME type of the data being sent.
923     * get*ArrayListExtra can have either a {@link #EXTRA_TEXT} or {@link
924     * #EXTRA_STREAM} field, containing the data to be sent.
925     * <p>
926     * Optional standard extras, which may be interpreted by some recipients as
927     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
928     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
929     * <p>
930     * Output: nothing.
931     */
932    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
933    public static final String ACTION_SEND_MULTIPLE = "android.intent.action.SEND_MULTIPLE";
934    /**
935     * Activity Action: Handle an incoming phone call.
936     * <p>Input: nothing.
937     * <p>Output: nothing.
938     */
939    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
940    public static final String ACTION_ANSWER = "android.intent.action.ANSWER";
941    /**
942     * Activity Action: Insert an empty item into the given container.
943     * <p>Input: {@link #getData} is URI of the directory (vnd.android.cursor.dir/*)
944     * in which to place the data.
945     * <p>Output: URI of the new data that was created.
946     */
947    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
948    public static final String ACTION_INSERT = "android.intent.action.INSERT";
949    /**
950     * Activity Action: Delete the given data from its container.
951     * <p>Input: {@link #getData} is URI of data to be deleted.
952     * <p>Output: nothing.
953     */
954    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
955    public static final String ACTION_DELETE = "android.intent.action.DELETE";
956    /**
957     * Activity Action: Run the data, whatever that means.
958     * <p>Input: ?  (Note: this is currently specific to the test harness.)
959     * <p>Output: nothing.
960     */
961    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
962    public static final String ACTION_RUN = "android.intent.action.RUN";
963    /**
964     * Activity Action: Perform a data synchronization.
965     * <p>Input: ?
966     * <p>Output: ?
967     */
968    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
969    public static final String ACTION_SYNC = "android.intent.action.SYNC";
970    /**
971     * Activity Action: Pick an activity given an intent, returning the class
972     * selected.
973     * <p>Input: get*Extra field {@link #EXTRA_INTENT} is an Intent
974     * used with {@link PackageManager#queryIntentActivities} to determine the
975     * set of activities from which to pick.
976     * <p>Output: Class name of the activity that was selected.
977     */
978    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
979    public static final String ACTION_PICK_ACTIVITY = "android.intent.action.PICK_ACTIVITY";
980    /**
981     * Activity Action: Perform a search.
982     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
983     * is the text to search for.  If empty, simply
984     * enter your search results Activity with the search UI activated.
985     * <p>Output: nothing.
986     */
987    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
988    public static final String ACTION_SEARCH = "android.intent.action.SEARCH";
989    /**
990     * Activity Action: Start the platform-defined tutorial
991     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
992     * is the text to search for.  If empty, simply
993     * enter your search results Activity with the search UI activated.
994     * <p>Output: nothing.
995     */
996    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
997    public static final String ACTION_SYSTEM_TUTORIAL = "android.intent.action.SYSTEM_TUTORIAL";
998    /**
999     * Activity Action: Perform a web search.
1000     * <p>
1001     * Input: {@link android.app.SearchManager#QUERY
1002     * getStringExtra(SearchManager.QUERY)} is the text to search for. If it is
1003     * a url starts with http or https, the site will be opened. If it is plain
1004     * text, Google search will be applied.
1005     * <p>
1006     * Output: nothing.
1007     */
1008    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1009    public static final String ACTION_WEB_SEARCH = "android.intent.action.WEB_SEARCH";
1010    /**
1011     * Activity Action: List all available applications
1012     * <p>Input: Nothing.
1013     * <p>Output: nothing.
1014     */
1015    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1016    public static final String ACTION_ALL_APPS = "android.intent.action.ALL_APPS";
1017    /**
1018     * Activity Action: Show settings for choosing wallpaper
1019     * <p>Input: Nothing.
1020     * <p>Output: Nothing.
1021     */
1022    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1023    public static final String ACTION_SET_WALLPAPER = "android.intent.action.SET_WALLPAPER";
1024
1025    /**
1026     * Activity Action: Show activity for reporting a bug.
1027     * <p>Input: Nothing.
1028     * <p>Output: Nothing.
1029     */
1030    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1031    public static final String ACTION_BUG_REPORT = "android.intent.action.BUG_REPORT";
1032
1033    /**
1034     *  Activity Action: Main entry point for factory tests.  Only used when
1035     *  the device is booting in factory test node.  The implementing package
1036     *  must be installed in the system image.
1037     *  <p>Input: nothing
1038     *  <p>Output: nothing
1039     */
1040    public static final String ACTION_FACTORY_TEST = "android.intent.action.FACTORY_TEST";
1041
1042    /**
1043     * Activity Action: The user pressed the "call" button to go to the dialer
1044     * or other appropriate UI for placing a call.
1045     * <p>Input: Nothing.
1046     * <p>Output: Nothing.
1047     */
1048    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1049    public static final String ACTION_CALL_BUTTON = "android.intent.action.CALL_BUTTON";
1050
1051    /**
1052     * Activity Action: Start Voice Command.
1053     * <p>Input: Nothing.
1054     * <p>Output: Nothing.
1055     */
1056    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1057    public static final String ACTION_VOICE_COMMAND = "android.intent.action.VOICE_COMMAND";
1058
1059    /**
1060     * Activity Action: Start action associated with long pressing on the
1061     * search key.
1062     * <p>Input: Nothing.
1063     * <p>Output: Nothing.
1064     */
1065    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1066    public static final String ACTION_SEARCH_LONG_PRESS = "android.intent.action.SEARCH_LONG_PRESS";
1067
1068    /**
1069     * Activity Action: The user pressed the "Report" button in the crash/ANR dialog.
1070     * This intent is delivered to the package which installed the application, usually
1071     * the Market.
1072     * <p>Input: No data is specified. The bug report is passed in using
1073     * an {@link #EXTRA_BUG_REPORT} field.
1074     * <p>Output: Nothing.
1075     * @hide
1076     */
1077    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1078    public static final String ACTION_APP_ERROR = "android.intent.action.APP_ERROR";
1079
1080    /**
1081     * Activity Action: Show power usage information to the user.
1082     * <p>Input: Nothing.
1083     * <p>Output: Nothing.
1084     */
1085    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1086    public static final String ACTION_POWER_USAGE_SUMMARY = "android.intent.action.POWER_USAGE_SUMMARY";
1087
1088    /**
1089     * Activity Action: Setup wizard to launch after a platform update.  This
1090     * activity should have a string meta-data field associated with it,
1091     * {@link #METADATA_SETUP_VERSION}, which defines the current version of
1092     * the platform for setup.  The activity will be launched only if
1093     * {@link android.provider.Settings.Secure#LAST_SETUP_SHOWN} is not the
1094     * same value.
1095     * <p>Input: Nothing.
1096     * <p>Output: Nothing.
1097     * @hide
1098     */
1099    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1100    public static final String ACTION_UPGRADE_SETUP = "android.intent.action.UPGRADE_SETUP";
1101
1102    /**
1103     * A string associated with a {@link #ACTION_UPGRADE_SETUP} activity
1104     * describing the last run version of the platform that was setup.
1105     * @hide
1106     */
1107    public static final String METADATA_SETUP_VERSION = "android.SETUP_VERSION";
1108
1109    // ---------------------------------------------------------------------
1110    // ---------------------------------------------------------------------
1111    // Standard intent broadcast actions (see action variable).
1112
1113    /**
1114     * Broadcast Action: Sent after the screen turns off.
1115     *
1116     * <p class="note">This is a protected intent that can only be sent
1117     * by the system.
1118     */
1119    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1120    public static final String ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF";
1121    /**
1122     * Broadcast Action: Sent after the screen turns on.
1123     *
1124     * <p class="note">This is a protected intent that can only be sent
1125     * by the system.
1126     */
1127    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1128    public static final String ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON";
1129
1130    /**
1131     * Broadcast Action: Sent when the user is present after device wakes up (e.g when the
1132     * keyguard is gone).
1133     *
1134     * <p class="note">This is a protected intent that can only be sent
1135     * by the system.
1136     */
1137    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1138    public static final String ACTION_USER_PRESENT= "android.intent.action.USER_PRESENT";
1139
1140    /**
1141     * Broadcast Action: The current time has changed.  Sent every
1142     * minute.  You can <em>not</em> receive this through components declared
1143     * in manifests, only by exlicitly registering for it with
1144     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1145     * Context.registerReceiver()}.
1146     *
1147     * <p class="note">This is a protected intent that can only be sent
1148     * by the system.
1149     */
1150    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1151    public static final String ACTION_TIME_TICK = "android.intent.action.TIME_TICK";
1152    /**
1153     * Broadcast Action: The time was set.
1154     */
1155    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1156    public static final String ACTION_TIME_CHANGED = "android.intent.action.TIME_SET";
1157    /**
1158     * Broadcast Action: The date has changed.
1159     */
1160    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1161    public static final String ACTION_DATE_CHANGED = "android.intent.action.DATE_CHANGED";
1162    /**
1163     * Broadcast Action: The timezone has changed. The intent will have the following extra values:</p>
1164     * <ul>
1165     *   <li><em>time-zone</em> - The java.util.TimeZone.getID() value identifying the new time zone.</li>
1166     * </ul>
1167     *
1168     * <p class="note">This is a protected intent that can only be sent
1169     * by the system.
1170     */
1171    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1172    public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
1173    /**
1174     * Alarm Changed Action: This is broadcast when the AlarmClock
1175     * application's alarm is set or unset.  It is used by the
1176     * AlarmClock application and the StatusBar service.
1177     * @hide
1178     */
1179    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1180    public static final String ACTION_ALARM_CHANGED = "android.intent.action.ALARM_CHANGED";
1181    /**
1182     * Sync State Changed Action: This is broadcast when the sync starts or stops or when one has
1183     * been failing for a long time.  It is used by the SyncManager and the StatusBar service.
1184     * @hide
1185     */
1186    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1187    public static final String ACTION_SYNC_STATE_CHANGED
1188            = "android.intent.action.SYNC_STATE_CHANGED";
1189    /**
1190     * Broadcast Action: This is broadcast once, after the system has finished
1191     * booting.  It can be used to perform application-specific initialization,
1192     * such as installing alarms.  You must hold the
1193     * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED} permission
1194     * in order to receive this broadcast.
1195     *
1196     * <p class="note">This is a protected intent that can only be sent
1197     * by the system.
1198     */
1199    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1200    public static final String ACTION_BOOT_COMPLETED = "android.intent.action.BOOT_COMPLETED";
1201    /**
1202     * Broadcast Action: This is broadcast when a user action should request a
1203     * temporary system dialog to dismiss.  Some examples of temporary system
1204     * dialogs are the notification window-shade and the recent tasks dialog.
1205     */
1206    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1207    /**
1208     * Broadcast Action: Trigger the download and eventual installation
1209     * of a package.
1210     * <p>Input: {@link #getData} is the URI of the package file to download.
1211     *
1212     * <p class="note">This is a protected intent that can only be sent
1213     * by the system.
1214     */
1215    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1216    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1217    /**
1218     * Broadcast Action: A new application package has been installed on the
1219     * device. The data contains the name of the package.  Note that the
1220     * newly installed package does <em>not</em> receive this broadcast.
1221     * <p>My include the following extras:
1222     * <ul>
1223     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1224     * <li> {@link #EXTRA_REPLACING} is set to true if this is following
1225     * an {@link #ACTION_PACKAGE_REMOVED} broadcast for the same package.
1226     * </ul>
1227     *
1228     * <p class="note">This is a protected intent that can only be sent
1229     * by the system.
1230     */
1231    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1232    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1233    /**
1234     * Broadcast Action: A new version of an application package has been
1235     * installed, replacing an existing version that was previously installed.
1236     * The data contains the name of the package.
1237     * <p>My include the following extras:
1238     * <ul>
1239     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1240     * </ul>
1241     *
1242     * <p class="note">This is a protected intent that can only be sent
1243     * by the system.
1244     */
1245    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1246    public static final String ACTION_PACKAGE_REPLACED = "android.intent.action.PACKAGE_REPLACED";
1247    /**
1248     * Broadcast Action: An existing application package has been removed from
1249     * the device.  The data contains the name of the package.  The package
1250     * that is being installed does <em>not</em> receive this Intent.
1251     * <ul>
1252     * <li> {@link #EXTRA_UID} containing the integer uid previously assigned
1253     * to the package.
1254     * <li> {@link #EXTRA_DATA_REMOVED} is set to true if the entire
1255     * application -- data and code -- is being removed.
1256     * <li> {@link #EXTRA_REPLACING} is set to true if this will be followed
1257     * by an {@link #ACTION_PACKAGE_ADDED} broadcast for the same package.
1258     * </ul>
1259     *
1260     * <p class="note">This is a protected intent that can only be sent
1261     * by the system.
1262     */
1263    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1264    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1265    /**
1266     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1267     * enabled or disabled.  The data contains the name of the package.
1268     * <ul>
1269     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1270     * </ul>
1271     *
1272     * <p class="note">This is a protected intent that can only be sent
1273     * by the system.
1274     */
1275    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1276    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1277    /**
1278     * Broadcast Action: The user has restarted a package, and all of its
1279     * processes have been killed.  All runtime state
1280     * associated with it (processes, alarms, notifications, etc) should
1281     * be removed.  Note that the restarted package does <em>not</em>
1282     * receive this broadcast.
1283     * The data contains the name of the package.
1284     * <ul>
1285     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1286     * </ul>
1287     *
1288     * <p class="note">This is a protected intent that can only be sent
1289     * by the system.
1290     */
1291    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1292    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1293    /**
1294     * Broadcast Action: The user has cleared the data of a package.  This should
1295     * be preceded by {@link #ACTION_PACKAGE_RESTARTED}, after which all of
1296     * its persistent data is erased and this broadcast sent.
1297     * Note that the cleared package does <em>not</em>
1298     * receive this broadcast. The data contains the name of the package.
1299     * <ul>
1300     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1301     * </ul>
1302     *
1303     * <p class="note">This is a protected intent that can only be sent
1304     * by the system.
1305     */
1306    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1307    public static final String ACTION_PACKAGE_DATA_CLEARED = "android.intent.action.PACKAGE_DATA_CLEARED";
1308    /**
1309     * Broadcast Action: A user ID has been removed from the system.  The user
1310     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1311     *
1312     * <p class="note">This is a protected intent that can only be sent
1313     * by the system.
1314     */
1315    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1316    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1317    /**
1318     * Broadcast Action:  The current system wallpaper has changed.  See
1319     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1320     */
1321    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1322    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1323    /**
1324     * Broadcast Action: The current device {@link android.content.res.Configuration}
1325     * (orientation, locale, etc) has changed.  When such a change happens, the
1326     * UIs (view hierarchy) will need to be rebuilt based on this new
1327     * information; for the most part, applications don't need to worry about
1328     * this, because the system will take care of stopping and restarting the
1329     * application to make sure it sees the new changes.  Some system code that
1330     * can not be restarted will need to watch for this action and handle it
1331     * appropriately.
1332     *
1333     * <p class="note">This is a protected intent that can only be sent
1334     * by the system.
1335     *
1336     * @see android.content.res.Configuration
1337     */
1338    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1339    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1340    /**
1341     * Broadcast Action:  The charging state, or charge level of the battery has
1342     * changed.
1343     *
1344     * <p class="note">
1345     * You can <em>not</em> receive this through components declared
1346     * in manifests, only by explicitly registering for it with
1347     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1348     * Context.registerReceiver()}.
1349     *
1350     * <p class="note">This is a protected intent that can only be sent
1351     * by the system.
1352     */
1353    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1354    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1355    /**
1356     * Broadcast Action:  Indicates low battery condition on the device.
1357     * This broadcast corresponds to the "Low battery warning" system dialog.
1358     *
1359     * <p class="note">This is a protected intent that can only be sent
1360     * by the system.
1361     */
1362    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1363    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1364    /**
1365     * Broadcast Action:  Indicates the battery is now okay after being low.
1366     * This will be sent after {@link #ACTION_BATTERY_LOW} once the battery has
1367     * gone back up to an okay state.
1368     *
1369     * <p class="note">This is a protected intent that can only be sent
1370     * by the system.
1371     */
1372    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1373    public static final String ACTION_BATTERY_OKAY = "android.intent.action.BATTERY_OKAY";
1374    /**
1375     * Broadcast Action:  External power has been connected to the device.
1376     * This is intended for applications that wish to register specifically to this notification.
1377     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1378     * stay active to receive this notification.  This action can be used to implement actions
1379     * that wait until power is available to trigger.
1380     *
1381     * <p class="note">This is a protected intent that can only be sent
1382     * by the system.
1383     */
1384    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1385    public static final String ACTION_POWER_CONNECTED = "android.intent.action.ACTION_POWER_CONNECTED";
1386    /**
1387     * Broadcast Action:  External power has been removed from the device.
1388     * This is intended for applications that wish to register specifically to this notification.
1389     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1390     * stay active to receive this notification.  This action can be used to implement actions
1391     * that wait until power is available to trigger.
1392     *
1393     * <p class="note">This is a protected intent that can only be sent
1394     * by the system.
1395     */
1396    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1397    public static final String ACTION_POWER_DISCONNECTED = "android.intent.action.ACTION_POWER_DISCONNECTED";
1398    /**
1399     * Broadcast Action:  Device is shutting down.
1400     * This is broadcast when the device is being shut down (completely turned
1401     * off, not sleeping).  Once the broadcast is complete, the final shutdown
1402     * will proceed and all unsaved data lost.  Apps will not normally need
1403     * to handle this, since the forground activity will be paused as well.
1404     *
1405     * <p class="note">This is a protected intent that can only be sent
1406     * by the system.
1407     */
1408    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1409    public static final String ACTION_SHUTDOWN = "android.intent.action.ACTION_SHUTDOWN";
1410    /**
1411     * Broadcast Action:  Indicates low memory condition on the device
1412     *
1413     * <p class="note">This is a protected intent that can only be sent
1414     * by the system.
1415     */
1416    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1417    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1418    /**
1419     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1420     *
1421     * <p class="note">This is a protected intent that can only be sent
1422     * by the system.
1423     */
1424    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1425    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1426    /**
1427     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1428     * and package management should be started.
1429     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1430     * notification.
1431     */
1432    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1433    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1434    /**
1435     * Broadcast Action:  The device has entered USB Mass Storage mode.
1436     * This is used mainly for the USB Settings panel.
1437     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1438     * when the SD card file system is mounted or unmounted
1439     */
1440    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1441    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1442
1443    /**
1444     * Broadcast Action:  The device has exited USB Mass Storage mode.
1445     * This is used mainly for the USB Settings panel.
1446     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1447     * when the SD card file system is mounted or unmounted
1448     */
1449    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1450    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1451
1452    /**
1453     * Broadcast Action:  External media has been removed.
1454     * The path to the mount point for the removed media is contained in the Intent.mData field.
1455     */
1456    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1457    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1458
1459    /**
1460     * Broadcast Action:  External media is present, but not mounted at its mount point.
1461     * The path to the mount point for the removed media is contained in the Intent.mData field.
1462     */
1463    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1464    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1465
1466    /**
1467     * Broadcast Action:  External media is present, and being disk-checked
1468     * The path to the mount point for the checking media is contained in the Intent.mData field.
1469     */
1470    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1471    public static final String ACTION_MEDIA_CHECKING = "android.intent.action.MEDIA_CHECKING";
1472
1473    /**
1474     * Broadcast Action:  External media is present, but is using an incompatible fs (or is blank)
1475     * The path to the mount point for the checking media is contained in the Intent.mData field.
1476     */
1477    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1478    public static final String ACTION_MEDIA_NOFS = "android.intent.action.MEDIA_NOFS";
1479
1480    /**
1481     * Broadcast Action:  External media is present and mounted at its mount point.
1482     * The path to the mount point for the removed media is contained in the Intent.mData field.
1483     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1484     * media was mounted read only.
1485     */
1486    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1487    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1488
1489    /**
1490     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1491     * The path to the mount point for the removed media is contained in the Intent.mData field.
1492     */
1493    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1494    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1495
1496    /**
1497     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1498     * The path to the mount point for the removed media is contained in the Intent.mData field.
1499     */
1500    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1501    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1502
1503    /**
1504     * Broadcast Action:  External media is present but cannot be mounted.
1505     * The path to the mount point for the removed media is contained in the Intent.mData field.
1506     */
1507    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1508    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1509
1510   /**
1511     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1512     * Applications should close all files they have open within the mount point when they receive this intent.
1513     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1514     */
1515    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1516    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1517
1518    /**
1519     * Broadcast Action:  The media scanner has started scanning a directory.
1520     * The path to the directory being scanned is contained in the Intent.mData field.
1521     */
1522    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1523    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1524
1525   /**
1526     * Broadcast Action:  The media scanner has finished scanning a directory.
1527     * The path to the scanned directory is contained in the Intent.mData field.
1528     */
1529    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1530    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1531
1532   /**
1533     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1534     * The path to the file is contained in the Intent.mData field.
1535     */
1536    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1537    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1538
1539   /**
1540     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1541     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1542     * caused the broadcast.
1543     */
1544    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1545    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1546
1547    /**
1548     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1549     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1550     * caused the broadcast.
1551     */
1552    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1553    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1554
1555    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1556    // location; they are not general-purpose actions.
1557
1558    /**
1559     * Broadcast Action: An GTalk connection has been established.
1560     */
1561    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1562    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1563            "android.intent.action.GTALK_CONNECTED";
1564
1565    /**
1566     * Broadcast Action: An GTalk connection has been disconnected.
1567     */
1568    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1569    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1570            "android.intent.action.GTALK_DISCONNECTED";
1571
1572    /**
1573     * Broadcast Action: An input method has been changed.
1574     */
1575    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1576    public static final String ACTION_INPUT_METHOD_CHANGED =
1577            "android.intent.action.INPUT_METHOD_CHANGED";
1578
1579    /**
1580     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1581     * more radios have been turned off or on. The intent will have the following extra value:</p>
1582     * <ul>
1583     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1584     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1585     *   turned off</li>
1586     * </ul>
1587     *
1588     * <p class="note">This is a protected intent that can only be sent
1589     * by the system.
1590     */
1591    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1592    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1593
1594    /**
1595     * Broadcast Action: Some content providers have parts of their namespace
1596     * where they publish new events or items that the user may be especially
1597     * interested in. For these things, they may broadcast this action when the
1598     * set of interesting items change.
1599     *
1600     * For example, GmailProvider sends this notification when the set of unread
1601     * mail in the inbox changes.
1602     *
1603     * <p>The data of the intent identifies which part of which provider
1604     * changed. When queried through the content resolver, the data URI will
1605     * return the data set in question.
1606     *
1607     * <p>The intent will have the following extra values:
1608     * <ul>
1609     *   <li><em>count</em> - The number of items in the data set. This is the
1610     *       same as the number of items in the cursor returned by querying the
1611     *       data URI. </li>
1612     * </ul>
1613     *
1614     * This intent will be sent at boot (if the count is non-zero) and when the
1615     * data set changes. It is possible for the data set to change without the
1616     * count changing (for example, if a new unread message arrives in the same
1617     * sync operation in which a message is archived). The phone should still
1618     * ring/vibrate/etc as normal in this case.
1619     */
1620    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1621    public static final String ACTION_PROVIDER_CHANGED =
1622            "android.intent.action.PROVIDER_CHANGED";
1623
1624    /**
1625     * Broadcast Action: Wired Headset plugged in or unplugged.
1626     *
1627     * <p>The intent will have the following extra values:
1628     * <ul>
1629     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1630     *   <li><em>name</em> - Headset type, human readable string </li>
1631     * </ul>
1632     * </ul>
1633     */
1634    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1635    public static final String ACTION_HEADSET_PLUG =
1636            "android.intent.action.HEADSET_PLUG";
1637
1638    /**
1639     * Broadcast Action: An outgoing call is about to be placed.
1640     *
1641     * <p>The Intent will have the following extra value:
1642     * <ul>
1643     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1644     *       the phone number originally intended to be dialed.</li>
1645     * </ul>
1646     * <p>Once the broadcast is finished, the resultData is used as the actual
1647     * number to call.  If  <code>null</code>, no call will be placed.</p>
1648     * <p>It is perfectly acceptable for multiple receivers to process the
1649     * outgoing call in turn: for example, a parental control application
1650     * might verify that the user is authorized to place the call at that
1651     * time, then a number-rewriting application might add an area code if
1652     * one was not specified.</p>
1653     * <p>For consistency, any receiver whose purpose is to prohibit phone
1654     * calls should have a priority of 0, to ensure it will see the final
1655     * phone number to be dialed.
1656     * Any receiver whose purpose is to rewrite phone numbers to be called
1657     * should have a positive priority.
1658     * Negative priorities are reserved for the system for this broadcast;
1659     * using them may cause problems.</p>
1660     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1661     * abort the broadcast.</p>
1662     * <p>Emergency calls cannot be intercepted using this mechanism, and
1663     * other calls cannot be modified to call emergency numbers using this
1664     * mechanism.
1665     * <p>You must hold the
1666     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1667     * permission to receive this Intent.</p>
1668     *
1669     * <p class="note">This is a protected intent that can only be sent
1670     * by the system.
1671     */
1672    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1673    public static final String ACTION_NEW_OUTGOING_CALL =
1674            "android.intent.action.NEW_OUTGOING_CALL";
1675
1676    /**
1677     * Broadcast Action: Have the device reboot.  This is only for use by
1678     * system code.
1679     *
1680     * <p class="note">This is a protected intent that can only be sent
1681     * by the system.
1682     */
1683    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1684    public static final String ACTION_REBOOT =
1685            "android.intent.action.REBOOT";
1686
1687
1688    // ---------------------------------------------------------------------
1689    // ---------------------------------------------------------------------
1690    // Standard intent categories (see addCategory()).
1691
1692    /**
1693     * Set if the activity should be an option for the default action
1694     * (center press) to perform on a piece of data.  Setting this will
1695     * hide from the user any activities without it set when performing an
1696     * action on some data.  Note that this is normal -not- set in the
1697     * Intent when initiating an action -- it is for use in intent filters
1698     * specified in packages.
1699     */
1700    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1701    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1702    /**
1703     * Activities that can be safely invoked from a browser must support this
1704     * category.  For example, if the user is viewing a web page or an e-mail
1705     * and clicks on a link in the text, the Intent generated execute that
1706     * link will require the BROWSABLE category, so that only activities
1707     * supporting this category will be considered as possible actions.  By
1708     * supporting this category, you are promising that there is nothing
1709     * damaging (without user intervention) that can happen by invoking any
1710     * matching Intent.
1711     */
1712    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1713    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1714    /**
1715     * Set if the activity should be considered as an alternative action to
1716     * the data the user is currently viewing.  See also
1717     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1718     * applies to the selection in a list of items.
1719     *
1720     * <p>Supporting this category means that you would like your activity to be
1721     * displayed in the set of alternative things the user can do, usually as
1722     * part of the current activity's options menu.  You will usually want to
1723     * include a specific label in the &lt;intent-filter&gt; of this action
1724     * describing to the user what it does.
1725     *
1726     * <p>The action of IntentFilter with this category is important in that it
1727     * describes the specific action the target will perform.  This generally
1728     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1729     * a specific name such as "com.android.camera.action.CROP.  Only one
1730     * alternative of any particular action will be shown to the user, so using
1731     * a specific action like this makes sure that your alternative will be
1732     * displayed while also allowing other applications to provide their own
1733     * overrides of that particular action.
1734     */
1735    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1736    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1737    /**
1738     * Set if the activity should be considered as an alternative selection
1739     * action to the data the user has currently selected.  This is like
1740     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1741     * of items from which the user can select, giving them alternatives to the
1742     * default action that will be performed on it.
1743     */
1744    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1745    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1746    /**
1747     * Intended to be used as a tab inside of an containing TabActivity.
1748     */
1749    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1750    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1751    /**
1752     * Should be displayed in the top-level launcher.
1753     */
1754    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1755    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1756    /**
1757     * Provides information about the package it is in; typically used if
1758     * a package does not contain a {@link #CATEGORY_LAUNCHER} to provide
1759     * a front-door to the user without having to be shown in the all apps list.
1760     */
1761    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1762    public static final String CATEGORY_INFO = "android.intent.category.INFO";
1763    /**
1764     * This is the home activity, that is the first activity that is displayed
1765     * when the device boots.
1766     */
1767    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1768    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1769    /**
1770     * This activity is a preference panel.
1771     */
1772    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1773    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1774    /**
1775     * This activity is a development preference panel.
1776     */
1777    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1778    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1779    /**
1780     * Capable of running inside a parent activity container.
1781     */
1782    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1783    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1784    /**
1785     * This activity may be exercised by the monkey or other automated test tools.
1786     */
1787    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1788    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1789    /**
1790     * To be used as a test (not part of the normal user experience).
1791     */
1792    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1793    /**
1794     * To be used as a unit test (run through the Test Harness).
1795     */
1796    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1797    /**
1798     * To be used as an sample code example (not part of the normal user
1799     * experience).
1800     */
1801    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1802    /**
1803     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1804     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1805     * when queried, though it is allowable for those columns to be blank.
1806     */
1807    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1808    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1809
1810    /**
1811     * To be used as code under test for framework instrumentation tests.
1812     */
1813    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1814            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1815    // ---------------------------------------------------------------------
1816    // ---------------------------------------------------------------------
1817    // Standard extra data keys.
1818
1819    /**
1820     * The initial data to place in a newly created record.  Use with
1821     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1822     * fields as would be given to the underlying ContentProvider.insert()
1823     * call.
1824     */
1825    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1826
1827    /**
1828     * A constant CharSequence that is associated with the Intent, used with
1829     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1830     * this may be a styled CharSequence, so you must use
1831     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1832     * retrieve it.
1833     */
1834    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1835
1836    /**
1837     * A content: URI holding a stream of data associated with the Intent,
1838     * used with {@link #ACTION_SEND} to supply the data being sent.
1839     */
1840    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1841
1842    /**
1843     * A String[] holding e-mail addresses that should be delivered to.
1844     */
1845    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1846
1847    /**
1848     * A String[] holding e-mail addresses that should be carbon copied.
1849     */
1850    public static final String EXTRA_CC       = "android.intent.extra.CC";
1851
1852    /**
1853     * A String[] holding e-mail addresses that should be blind carbon copied.
1854     */
1855    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1856
1857    /**
1858     * A constant string holding the desired subject line of a message.
1859     */
1860    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1861
1862    /**
1863     * An Intent describing the choices you would like shown with
1864     * {@link #ACTION_PICK_ACTIVITY}.
1865     */
1866    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1867
1868    /**
1869     * A CharSequence dialog title to provide to the user when used with a
1870     * {@link #ACTION_CHOOSER}.
1871     */
1872    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1873
1874    /**
1875     * A {@link android.view.KeyEvent} object containing the event that
1876     * triggered the creation of the Intent it is in.
1877     */
1878    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1879
1880    /**
1881     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1882     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1883     * of restarting the application.
1884     */
1885    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1886
1887    /**
1888     * A String holding the phone number originally entered in
1889     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1890     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1891     */
1892    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1893    /**
1894     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1895     * intents to supply the uid the package had been assigned.  Also an optional
1896     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1897     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1898     * purpose.
1899     */
1900    public static final String EXTRA_UID = "android.intent.extra.UID";
1901
1902    /**
1903     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1904     * intents to indicate whether this represents a full uninstall (removing
1905     * both the code and its data) or a partial uninstall (leaving its data,
1906     * implying that this is an update).
1907     */
1908    public static final String EXTRA_DATA_REMOVED = "android.intent.extra.DATA_REMOVED";
1909
1910    /**
1911     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1912     * intents to indicate that this is a replacement of the package, so this
1913     * broadcast will immediately be followed by an add broadcast for a
1914     * different version of the same package.
1915     */
1916    public static final String EXTRA_REPLACING = "android.intent.extra.REPLACING";
1917
1918    /**
1919     * Used as an int extra field in {@link android.app.AlarmManager} intents
1920     * to tell the application being invoked how many pending alarms are being
1921     * delievered with the intent.  For one-shot alarms this will always be 1.
1922     * For recurring alarms, this might be greater than 1 if the device was
1923     * asleep or powered off at the time an earlier alarm would have been
1924     * delivered.
1925     */
1926    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1927
1928    /**
1929     * Used as a parcelable extra field in {@link #ACTION_APP_ERROR}, containing
1930     * the bug report.
1931     *
1932     * @hide
1933     */
1934    public static final String EXTRA_BUG_REPORT = "android.intent.extra.BUG_REPORT";
1935
1936    /**
1937     * Used as a string extra field when sending an intent to PackageInstaller to install a
1938     * package. Specifies the installer package name; this package will receive the
1939     * {@link #ACTION_APP_ERROR} intent.
1940     *
1941     * @hide
1942     */
1943    public static final String EXTRA_INSTALLER_PACKAGE_NAME
1944            = "android.intent.extra.INSTALLER_PACKAGE_NAME";
1945
1946    // ---------------------------------------------------------------------
1947    // ---------------------------------------------------------------------
1948    // Intent flags (see mFlags variable).
1949
1950    /**
1951     * If set, the recipient of this Intent will be granted permission to
1952     * perform read operations on the Uri in the Intent's data.
1953     */
1954    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
1955    /**
1956     * If set, the recipient of this Intent will be granted permission to
1957     * perform write operations on the Uri in the Intent's data.
1958     */
1959    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
1960    /**
1961     * Can be set by the caller to indicate that this Intent is coming from
1962     * a background operation, not from direct user interaction.
1963     */
1964    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
1965    /**
1966     * A flag you can enable for debugging: when set, log messages will be
1967     * printed during the resolution of this intent to show you what has
1968     * been found to create the final resolved list.
1969     */
1970    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
1971
1972    /**
1973     * If set, the new activity is not kept in the history stack.  As soon as
1974     * the user navigates away from it, the activity is finished.  This may also
1975     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
1976     * noHistory} attribute.
1977     */
1978    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
1979    /**
1980     * If set, the activity will not be launched if it is already running
1981     * at the top of the history stack.
1982     */
1983    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
1984    /**
1985     * If set, this activity will become the start of a new task on this
1986     * history stack.  A task (from the activity that started it to the
1987     * next task activity) defines an atomic group of activities that the
1988     * user can move to.  Tasks can be moved to the foreground and background;
1989     * all of the activities inside of a particular task always remain in
1990     * the same order.  See
1991     * <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
1992     * Activities and Tasks</a> for more details on tasks.
1993     *
1994     * <p>This flag is generally used by activities that want
1995     * to present a "launcher" style behavior: they give the user a list of
1996     * separate things that can be done, which otherwise run completely
1997     * independently of the activity launching them.
1998     *
1999     * <p>When using this flag, if a task is already running for the activity
2000     * you are now starting, then a new activity will not be started; instead,
2001     * the current task will simply be brought to the front of the screen with
2002     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
2003     * to disable this behavior.
2004     *
2005     * <p>This flag can not be used when the caller is requesting a result from
2006     * the activity being launched.
2007     */
2008    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
2009    /**
2010     * <strong>Do not use this flag unless you are implementing your own
2011     * top-level application launcher.</strong>  Used in conjunction with
2012     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
2013     * behavior of bringing an existing task to the foreground.  When set,
2014     * a new task is <em>always</em> started to host the Activity for the
2015     * Intent, regardless of whether there is already an existing task running
2016     * the same thing.
2017     *
2018     * <p><strong>Because the default system does not include graphical task management,
2019     * you should not use this flag unless you provide some way for a user to
2020     * return back to the tasks you have launched.</strong>
2021     *
2022     * <p>This flag is ignored if
2023     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
2024     *
2025     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2026     * Activities and Tasks</a> for more details on tasks.
2027     */
2028    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
2029    /**
2030     * If set, and the activity being launched is already running in the
2031     * current task, then instead of launching a new instance of that activity,
2032     * all of the other activities on top of it will be closed and this Intent
2033     * will be delivered to the (now on top) old activity as a new Intent.
2034     *
2035     * <p>For example, consider a task consisting of the activities: A, B, C, D.
2036     * If D calls startActivity() with an Intent that resolves to the component
2037     * of activity B, then C and D will be finished and B receive the given
2038     * Intent, resulting in the stack now being: A, B.
2039     *
2040     * <p>The currently running instance of task B in the above example will
2041     * either receive the new intent you are starting here in its
2042     * onNewIntent() method, or be itself finished and restarted with the
2043     * new intent.  If it has declared its launch mode to be "multiple" (the
2044     * default) it will be finished and re-created; for all other launch modes
2045     * it will receive the Intent in the current instance.
2046     *
2047     * <p>This launch mode can also be used to good effect in conjunction with
2048     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
2049     * of a task, it will bring any currently running instance of that task
2050     * to the foreground, and then clear it to its root state.  This is
2051     * especially useful, for example, when launching an activity from the
2052     * notification manager.
2053     *
2054     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2055     * Activities and Tasks</a> for more details on tasks.
2056     */
2057    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
2058    /**
2059     * If set and this intent is being used to launch a new activity from an
2060     * existing one, then the reply target of the existing activity will be
2061     * transfered to the new activity.  This way the new activity can call
2062     * {@link android.app.Activity#setResult} and have that result sent back to
2063     * the reply target of the original activity.
2064     */
2065    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
2066    /**
2067     * If set and this intent is being used to launch a new activity from an
2068     * existing one, the current activity will not be counted as the top
2069     * activity for deciding whether the new intent should be delivered to
2070     * the top instead of starting a new one.  The previous activity will
2071     * be used as the top, with the assumption being that the current activity
2072     * will finish itself immediately.
2073     */
2074    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
2075    /**
2076     * If set, the new activity is not kept in the list of recently launched
2077     * activities.
2078     */
2079    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
2080    /**
2081     * This flag is not normally set by application code, but set for you by
2082     * the system as described in the
2083     * {@link android.R.styleable#AndroidManifestActivity_launchMode
2084     * launchMode} documentation for the singleTask mode.
2085     */
2086    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
2087    /**
2088     * If set, and this activity is either being started in a new task or
2089     * bringing to the top an existing task, then it will be launched as
2090     * the front door of the task.  This will result in the application of
2091     * any affinities needed to have that task in the proper state (either
2092     * moving activities to or from it), or simply resetting that task to
2093     * its initial state if needed.
2094     */
2095    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
2096    /**
2097     * This flag is not normally set by application code, but set for you by
2098     * the system if this activity is being launched from history
2099     * (longpress home key).
2100     */
2101    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
2102    /**
2103     * If set, this marks a point in the task's activity stack that should
2104     * be cleared when the task is reset.  That is, the next time the task
2105     * is brought to the foreground with
2106     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
2107     * the user re-launching it from home), this activity and all on top of
2108     * it will be finished so that the user does not return to them, but
2109     * instead returns to whatever activity preceeded it.
2110     *
2111     * <p>This is useful for cases where you have a logical break in your
2112     * application.  For example, an e-mail application may have a command
2113     * to view an attachment, which launches an image view activity to
2114     * display it.  This activity should be part of the e-mail application's
2115     * task, since it is a part of the task the user is involved in.  However,
2116     * if the user leaves that task, and later selects the e-mail app from
2117     * home, we may like them to return to the conversation they were
2118     * viewing, not the picture attachment, since that is confusing.  By
2119     * setting this flag when launching the image viewer, that viewer and
2120     * any activities it starts will be removed the next time the user returns
2121     * to mail.
2122     */
2123    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
2124    /**
2125     * If set, this flag will prevent the normal {@link android.app.Activity#onUserLeaveHint}
2126     * callback from occurring on the current frontmost activity before it is
2127     * paused as the newly-started activity is brought to the front.
2128     *
2129     * <p>Typically, an activity can rely on that callback to indicate that an
2130     * explicit user action has caused their activity to be moved out of the
2131     * foreground. The callback marks an appropriate point in the activity's
2132     * lifecycle for it to dismiss any notifications that it intends to display
2133     * "until the user has seen them," such as a blinking LED.
2134     *
2135     * <p>If an activity is ever started via any non-user-driven events such as
2136     * phone-call receipt or an alarm handler, this flag should be passed to {@link
2137     * Context#startActivity Context.startActivity}, ensuring that the pausing
2138     * activity does not think the user has acknowledged its notification.
2139     */
2140    public static final int FLAG_ACTIVITY_NO_USER_ACTION = 0x00040000;
2141    /**
2142     * If set in an Intent passed to {@link Context#startActivity Context.startActivity()},
2143     * this flag will cause the launched activity to be brought to the front of its
2144     * task's history stack if it is already running.
2145     *
2146     * <p>For example, consider a task consisting of four activities: A, B, C, D.
2147     * If D calls startActivity() with an Intent that resolves to the component
2148     * of activity B, then B will be brought to the front of the history stack,
2149     * with this resulting order:  A, C, D, B.
2150     *
2151     * This flag will be ignored if {@link #FLAG_ACTIVITY_CLEAR_TOP} is also
2152     * specified.
2153     */
2154    public static final int FLAG_ACTIVITY_REORDER_TO_FRONT = 0X00020000;
2155    /**
2156     * If set, when sending a broadcast only registered receivers will be
2157     * called -- no BroadcastReceiver components will be launched.
2158     */
2159    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
2160    /**
2161     * If set, when sending a broadcast <i>before boot has completed</i> only
2162     * registered receivers will be called -- no BroadcastReceiver components
2163     * will be launched.  Sticky intent state will be recorded properly even
2164     * if no receivers wind up being called.  If {@link #FLAG_RECEIVER_REGISTERED_ONLY}
2165     * is specified in the broadcast intent, this flag is unnecessary.
2166     *
2167     * <p>This flag is only for use by system sevices as a convenience to
2168     * avoid having to implement a more complex mechanism around detection
2169     * of boot completion.
2170     *
2171     * @hide
2172     */
2173    public static final int FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT = 0x20000000;
2174
2175    // ---------------------------------------------------------------------
2176    // ---------------------------------------------------------------------
2177    // toUri() and parseUri() options.
2178
2179    /**
2180     * Flag for use with {@link #toUri} and {@link #parseUri}: the URI string
2181     * always has the "intent:" scheme.  This syntax can be used when you want
2182     * to later disambiguate between URIs that are intended to describe an
2183     * Intent vs. all others that should be treated as raw URIs.  When used
2184     * with {@link #parseUri}, any other scheme will result in a generic
2185     * VIEW action for that raw URI.
2186     */
2187    public static final int URI_INTENT_SCHEME = 1<<0;
2188
2189    // ---------------------------------------------------------------------
2190
2191    private String mAction;
2192    private Uri mData;
2193    private String mType;
2194    private String mPackage;
2195    private ComponentName mComponent;
2196    private int mFlags;
2197    private HashSet<String> mCategories;
2198    private Bundle mExtras;
2199
2200    // ---------------------------------------------------------------------
2201
2202    /**
2203     * Create an empty intent.
2204     */
2205    public Intent() {
2206    }
2207
2208    /**
2209     * Copy constructor.
2210     */
2211    public Intent(Intent o) {
2212        this.mAction = o.mAction;
2213        this.mData = o.mData;
2214        this.mType = o.mType;
2215        this.mPackage = o.mPackage;
2216        this.mComponent = o.mComponent;
2217        this.mFlags = o.mFlags;
2218        if (o.mCategories != null) {
2219            this.mCategories = new HashSet<String>(o.mCategories);
2220        }
2221        if (o.mExtras != null) {
2222            this.mExtras = new Bundle(o.mExtras);
2223        }
2224    }
2225
2226    @Override
2227    public Object clone() {
2228        return new Intent(this);
2229    }
2230
2231    private Intent(Intent o, boolean all) {
2232        this.mAction = o.mAction;
2233        this.mData = o.mData;
2234        this.mType = o.mType;
2235        this.mPackage = o.mPackage;
2236        this.mComponent = o.mComponent;
2237        if (o.mCategories != null) {
2238            this.mCategories = new HashSet<String>(o.mCategories);
2239        }
2240    }
2241
2242    /**
2243     * Make a clone of only the parts of the Intent that are relevant for
2244     * filter matching: the action, data, type, component, and categories.
2245     */
2246    public Intent cloneFilter() {
2247        return new Intent(this, false);
2248    }
2249
2250    /**
2251     * Create an intent with a given action.  All other fields (data, type,
2252     * class) are null.  Note that the action <em>must</em> be in a
2253     * namespace because Intents are used globally in the system -- for
2254     * example the system VIEW action is android.intent.action.VIEW; an
2255     * application's custom action would be something like
2256     * com.google.app.myapp.CUSTOM_ACTION.
2257     *
2258     * @param action The Intent action, such as ACTION_VIEW.
2259     */
2260    public Intent(String action) {
2261        mAction = action;
2262    }
2263
2264    /**
2265     * Create an intent with a given action and for a given data url.  Note
2266     * that the action <em>must</em> be in a namespace because Intents are
2267     * used globally in the system -- for example the system VIEW action is
2268     * android.intent.action.VIEW; an application's custom action would be
2269     * something like com.google.app.myapp.CUSTOM_ACTION.
2270     *
2271     * <p><em>Note: scheme and host name matching in the Android framework is
2272     * case-sensitive, unlike the formal RFC.  As a result,
2273     * you should always ensure that you write your Uri with these elements
2274     * using lower case letters, and normalize any Uris you receive from
2275     * outside of Android to ensure the scheme and host is lower case.</em></p>
2276     *
2277     * @param action The Intent action, such as ACTION_VIEW.
2278     * @param uri The Intent data URI.
2279     */
2280    public Intent(String action, Uri uri) {
2281        mAction = action;
2282        mData = uri;
2283    }
2284
2285    /**
2286     * Create an intent for a specific component.  All other fields (action, data,
2287     * type, class) are null, though they can be modified later with explicit
2288     * calls.  This provides a convenient way to create an intent that is
2289     * intended to execute a hard-coded class name, rather than relying on the
2290     * system to find an appropriate class for you; see {@link #setComponent}
2291     * for more information on the repercussions of this.
2292     *
2293     * @param packageContext A Context of the application package implementing
2294     * this class.
2295     * @param cls The component class that is to be used for the intent.
2296     *
2297     * @see #setClass
2298     * @see #setComponent
2299     * @see #Intent(String, android.net.Uri , Context, Class)
2300     */
2301    public Intent(Context packageContext, Class<?> cls) {
2302        mComponent = new ComponentName(packageContext, cls);
2303    }
2304
2305    /**
2306     * Create an intent for a specific component with a specified action and data.
2307     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
2308     * construct the Intent and then calling {@link #setClass} to set its
2309     * class.
2310     *
2311     * <p><em>Note: scheme and host name matching in the Android framework is
2312     * case-sensitive, unlike the formal RFC.  As a result,
2313     * you should always ensure that you write your Uri with these elements
2314     * using lower case letters, and normalize any Uris you receive from
2315     * outside of Android to ensure the scheme and host is lower case.</em></p>
2316     *
2317     * @param action The Intent action, such as ACTION_VIEW.
2318     * @param uri The Intent data URI.
2319     * @param packageContext A Context of the application package implementing
2320     * this class.
2321     * @param cls The component class that is to be used for the intent.
2322     *
2323     * @see #Intent(String, android.net.Uri)
2324     * @see #Intent(Context, Class)
2325     * @see #setClass
2326     * @see #setComponent
2327     */
2328    public Intent(String action, Uri uri,
2329            Context packageContext, Class<?> cls) {
2330        mAction = action;
2331        mData = uri;
2332        mComponent = new ComponentName(packageContext, cls);
2333    }
2334
2335    /**
2336     * Call {@link #parseUri} with 0 flags.
2337     * @deprecated Use {@link #parseUri} instead.
2338     */
2339    @Deprecated
2340    public static Intent getIntent(String uri) throws URISyntaxException {
2341        return parseUri(uri, 0);
2342    }
2343
2344    /**
2345     * Create an intent from a URI.  This URI may encode the action,
2346     * category, and other intent fields, if it was returned by
2347     * {@link #toUri}.  If the Intent was not generate by toUri(), its data
2348     * will be the entire URI and its action will be ACTION_VIEW.
2349     *
2350     * <p>The URI given here must not be relative -- that is, it must include
2351     * the scheme and full path.
2352     *
2353     * @param uri The URI to turn into an Intent.
2354     * @param flags Additional processing flags.  Either 0 or
2355     *
2356     * @return Intent The newly created Intent object.
2357     *
2358     * @throws URISyntaxException Throws URISyntaxError if the basic URI syntax
2359     * it bad (as parsed by the Uri class) or the Intent data within the
2360     * URI is invalid.
2361     *
2362     * @see #toUri
2363     */
2364    public static Intent parseUri(String uri, int flags) throws URISyntaxException {
2365        int i = 0;
2366        try {
2367            // Validate intent scheme for if requested.
2368            if ((flags&URI_INTENT_SCHEME) != 0) {
2369                if (!uri.startsWith("intent:")) {
2370                    Intent intent = new Intent(ACTION_VIEW);
2371                    try {
2372                        intent.setData(Uri.parse(uri));
2373                    } catch (IllegalArgumentException e) {
2374                        throw new URISyntaxException(uri, e.getMessage());
2375                    }
2376                    return intent;
2377                }
2378            }
2379
2380            // simple case
2381            i = uri.lastIndexOf("#");
2382            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2383
2384            // old format Intent URI
2385            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2386
2387            // new format
2388            Intent intent = new Intent(ACTION_VIEW);
2389
2390            // fetch data part, if present
2391            String data = i >= 0 ? uri.substring(0, i) : null;
2392            String scheme = null;
2393            i += "#Intent;".length();
2394
2395            // loop over contents of Intent, all name=value;
2396            while (!uri.startsWith("end", i)) {
2397                int eq = uri.indexOf('=', i);
2398                int semi = uri.indexOf(';', eq);
2399                String value = Uri.decode(uri.substring(eq + 1, semi));
2400
2401                // action
2402                if (uri.startsWith("action=", i)) {
2403                    intent.mAction = value;
2404                }
2405
2406                // categories
2407                else if (uri.startsWith("category=", i)) {
2408                    intent.addCategory(value);
2409                }
2410
2411                // type
2412                else if (uri.startsWith("type=", i)) {
2413                    intent.mType = value;
2414                }
2415
2416                // launch  flags
2417                else if (uri.startsWith("launchFlags=", i)) {
2418                    intent.mFlags = Integer.decode(value).intValue();
2419                }
2420
2421                // package
2422                else if (uri.startsWith("package=", i)) {
2423                    intent.mPackage = value;
2424                }
2425
2426                // component
2427                else if (uri.startsWith("component=", i)) {
2428                    intent.mComponent = ComponentName.unflattenFromString(value);
2429                }
2430
2431                // scheme
2432                else if (uri.startsWith("scheme=", i)) {
2433                    scheme = value;
2434                }
2435
2436                // extra
2437                else {
2438                    String key = Uri.decode(uri.substring(i + 2, eq));
2439                    // create Bundle if it doesn't already exist
2440                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2441                    Bundle b = intent.mExtras;
2442                    // add EXTRA
2443                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2444                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2445                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2446                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2447                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2448                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2449                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2450                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2451                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2452                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2453                }
2454
2455                // move to the next item
2456                i = semi + 1;
2457            }
2458
2459            if (data != null) {
2460                if (data.startsWith("intent:")) {
2461                    data = data.substring(7);
2462                    if (scheme != null) {
2463                        data = scheme + ':' + data;
2464                    }
2465                }
2466
2467                if (data.length() > 0) {
2468                    try {
2469                        intent.mData = Uri.parse(data);
2470                    } catch (IllegalArgumentException e) {
2471                        throw new URISyntaxException(uri, e.getMessage());
2472                    }
2473                }
2474            }
2475
2476            return intent;
2477
2478        } catch (IndexOutOfBoundsException e) {
2479            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2480        }
2481    }
2482
2483    public static Intent getIntentOld(String uri) throws URISyntaxException {
2484        Intent intent;
2485
2486        int i = uri.lastIndexOf('#');
2487        if (i >= 0) {
2488            Uri data = null;
2489            String action = null;
2490            if (i > 0) {
2491                data = Uri.parse(uri.substring(0, i));
2492            }
2493
2494            i++;
2495
2496            if (uri.regionMatches(i, "action(", 0, 7)) {
2497                i += 7;
2498                int j = uri.indexOf(')', i);
2499                action = uri.substring(i, j);
2500                i = j + 1;
2501            }
2502
2503            intent = new Intent(action, data);
2504
2505            if (uri.regionMatches(i, "categories(", 0, 11)) {
2506                i += 11;
2507                int j = uri.indexOf(')', i);
2508                while (i < j) {
2509                    int sep = uri.indexOf('!', i);
2510                    if (sep < 0) sep = j;
2511                    if (i < sep) {
2512                        intent.addCategory(uri.substring(i, sep));
2513                    }
2514                    i = sep + 1;
2515                }
2516                i = j + 1;
2517            }
2518
2519            if (uri.regionMatches(i, "type(", 0, 5)) {
2520                i += 5;
2521                int j = uri.indexOf(')', i);
2522                intent.mType = uri.substring(i, j);
2523                i = j + 1;
2524            }
2525
2526            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2527                i += 12;
2528                int j = uri.indexOf(')', i);
2529                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2530                i = j + 1;
2531            }
2532
2533            if (uri.regionMatches(i, "component(", 0, 10)) {
2534                i += 10;
2535                int j = uri.indexOf(')', i);
2536                int sep = uri.indexOf('!', i);
2537                if (sep >= 0 && sep < j) {
2538                    String pkg = uri.substring(i, sep);
2539                    String cls = uri.substring(sep + 1, j);
2540                    intent.mComponent = new ComponentName(pkg, cls);
2541                }
2542                i = j + 1;
2543            }
2544
2545            if (uri.regionMatches(i, "extras(", 0, 7)) {
2546                i += 7;
2547
2548                final int closeParen = uri.indexOf(')', i);
2549                if (closeParen == -1) throw new URISyntaxException(uri,
2550                        "EXTRA missing trailing ')'", i);
2551
2552                while (i < closeParen) {
2553                    // fetch the key value
2554                    int j = uri.indexOf('=', i);
2555                    if (j <= i + 1 || i >= closeParen) {
2556                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2557                    }
2558                    char type = uri.charAt(i);
2559                    i++;
2560                    String key = uri.substring(i, j);
2561                    i = j + 1;
2562
2563                    // get type-value
2564                    j = uri.indexOf('!', i);
2565                    if (j == -1 || j >= closeParen) j = closeParen;
2566                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2567                    String value = uri.substring(i, j);
2568                    i = j;
2569
2570                    // create Bundle if it doesn't already exist
2571                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2572
2573                    // add item to bundle
2574                    try {
2575                        switch (type) {
2576                            case 'S':
2577                                intent.mExtras.putString(key, Uri.decode(value));
2578                                break;
2579                            case 'B':
2580                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2581                                break;
2582                            case 'b':
2583                                intent.mExtras.putByte(key, Byte.parseByte(value));
2584                                break;
2585                            case 'c':
2586                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2587                                break;
2588                            case 'd':
2589                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2590                                break;
2591                            case 'f':
2592                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2593                                break;
2594                            case 'i':
2595                                intent.mExtras.putInt(key, Integer.parseInt(value));
2596                                break;
2597                            case 'l':
2598                                intent.mExtras.putLong(key, Long.parseLong(value));
2599                                break;
2600                            case 's':
2601                                intent.mExtras.putShort(key, Short.parseShort(value));
2602                                break;
2603                            default:
2604                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2605                        }
2606                    } catch (NumberFormatException e) {
2607                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2608                    }
2609
2610                    char ch = uri.charAt(i);
2611                    if (ch == ')') break;
2612                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2613                    i++;
2614                }
2615            }
2616
2617            if (intent.mAction == null) {
2618                // By default, if no action is specified, then use VIEW.
2619                intent.mAction = ACTION_VIEW;
2620            }
2621
2622        } else {
2623            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2624        }
2625
2626        return intent;
2627    }
2628
2629    /**
2630     * Retrieve the general action to be performed, such as
2631     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2632     * the information in the intent should be interpreted -- most importantly,
2633     * what to do with the data returned by {@link #getData}.
2634     *
2635     * @return The action of this intent or null if none is specified.
2636     *
2637     * @see #setAction
2638     */
2639    public String getAction() {
2640        return mAction;
2641    }
2642
2643    /**
2644     * Retrieve data this intent is operating on.  This URI specifies the name
2645     * of the data; often it uses the content: scheme, specifying data in a
2646     * content provider.  Other schemes may be handled by specific activities,
2647     * such as http: by the web browser.
2648     *
2649     * @return The URI of the data this intent is targeting or null.
2650     *
2651     * @see #getScheme
2652     * @see #setData
2653     */
2654    public Uri getData() {
2655        return mData;
2656    }
2657
2658    /**
2659     * The same as {@link #getData()}, but returns the URI as an encoded
2660     * String.
2661     */
2662    public String getDataString() {
2663        return mData != null ? mData.toString() : null;
2664    }
2665
2666    /**
2667     * Return the scheme portion of the intent's data.  If the data is null or
2668     * does not include a scheme, null is returned.  Otherwise, the scheme
2669     * prefix without the final ':' is returned, i.e. "http".
2670     *
2671     * <p>This is the same as calling getData().getScheme() (and checking for
2672     * null data).
2673     *
2674     * @return The scheme of this intent.
2675     *
2676     * @see #getData
2677     */
2678    public String getScheme() {
2679        return mData != null ? mData.getScheme() : null;
2680    }
2681
2682    /**
2683     * Retrieve any explicit MIME type included in the intent.  This is usually
2684     * null, as the type is determined by the intent data.
2685     *
2686     * @return If a type was manually set, it is returned; else null is
2687     *         returned.
2688     *
2689     * @see #resolveType(ContentResolver)
2690     * @see #setType
2691     */
2692    public String getType() {
2693        return mType;
2694    }
2695
2696    /**
2697     * Return the MIME data type of this intent.  If the type field is
2698     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2699     * the type of that data is returned.  If neither fields are set, a null is
2700     * returned.
2701     *
2702     * @return The MIME type of this intent.
2703     *
2704     * @see #getType
2705     * @see #resolveType(ContentResolver)
2706     */
2707    public String resolveType(Context context) {
2708        return resolveType(context.getContentResolver());
2709    }
2710
2711    /**
2712     * Return the MIME data type of this intent.  If the type field is
2713     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2714     * the type of that data is returned.  If neither fields are set, a null is
2715     * returned.
2716     *
2717     * @param resolver A ContentResolver that can be used to determine the MIME
2718     *                 type of the intent's data.
2719     *
2720     * @return The MIME type of this intent.
2721     *
2722     * @see #getType
2723     * @see #resolveType(Context)
2724     */
2725    public String resolveType(ContentResolver resolver) {
2726        if (mType != null) {
2727            return mType;
2728        }
2729        if (mData != null) {
2730            if ("content".equals(mData.getScheme())) {
2731                return resolver.getType(mData);
2732            }
2733        }
2734        return null;
2735    }
2736
2737    /**
2738     * Return the MIME data type of this intent, only if it will be needed for
2739     * intent resolution.  This is not generally useful for application code;
2740     * it is used by the frameworks for communicating with back-end system
2741     * services.
2742     *
2743     * @param resolver A ContentResolver that can be used to determine the MIME
2744     *                 type of the intent's data.
2745     *
2746     * @return The MIME type of this intent, or null if it is unknown or not
2747     *         needed.
2748     */
2749    public String resolveTypeIfNeeded(ContentResolver resolver) {
2750        if (mComponent != null) {
2751            return mType;
2752        }
2753        return resolveType(resolver);
2754    }
2755
2756    /**
2757     * Check if an category exists in the intent.
2758     *
2759     * @param category The category to check.
2760     *
2761     * @return boolean True if the intent contains the category, else false.
2762     *
2763     * @see #getCategories
2764     * @see #addCategory
2765     */
2766    public boolean hasCategory(String category) {
2767        return mCategories != null && mCategories.contains(category);
2768    }
2769
2770    /**
2771     * Return the set of all categories in the intent.  If there are no categories,
2772     * returns NULL.
2773     *
2774     * @return Set The set of categories you can examine.  Do not modify!
2775     *
2776     * @see #hasCategory
2777     * @see #addCategory
2778     */
2779    public Set<String> getCategories() {
2780        return mCategories;
2781    }
2782
2783    /**
2784     * Sets the ClassLoader that will be used when unmarshalling
2785     * any Parcelable values from the extras of this Intent.
2786     *
2787     * @param loader a ClassLoader, or null to use the default loader
2788     * at the time of unmarshalling.
2789     */
2790    public void setExtrasClassLoader(ClassLoader loader) {
2791        if (mExtras != null) {
2792            mExtras.setClassLoader(loader);
2793        }
2794    }
2795
2796    /**
2797     * Returns true if an extra value is associated with the given name.
2798     * @param name the extra's name
2799     * @return true if the given extra is present.
2800     */
2801    public boolean hasExtra(String name) {
2802        return mExtras != null && mExtras.containsKey(name);
2803    }
2804
2805    /**
2806     * Returns true if the Intent's extras contain a parcelled file descriptor.
2807     * @return true if the Intent contains a parcelled file descriptor.
2808     */
2809    public boolean hasFileDescriptors() {
2810        return mExtras != null && mExtras.hasFileDescriptors();
2811    }
2812
2813    /**
2814     * Retrieve extended data from the intent.
2815     *
2816     * @param name The name of the desired item.
2817     *
2818     * @return the value of an item that previously added with putExtra()
2819     * or null if none was found.
2820     *
2821     * @deprecated
2822     * @hide
2823     */
2824    @Deprecated
2825    public Object getExtra(String name) {
2826        return getExtra(name, null);
2827    }
2828
2829    /**
2830     * Retrieve extended data from the intent.
2831     *
2832     * @param name The name of the desired item.
2833     * @param defaultValue the value to be returned if no value of the desired
2834     * type is stored with the given name.
2835     *
2836     * @return the value of an item that previously added with putExtra()
2837     * or the default value if none was found.
2838     *
2839     * @see #putExtra(String, boolean)
2840     */
2841    public boolean getBooleanExtra(String name, boolean defaultValue) {
2842        return mExtras == null ? defaultValue :
2843            mExtras.getBoolean(name, defaultValue);
2844    }
2845
2846    /**
2847     * Retrieve extended data from the intent.
2848     *
2849     * @param name The name of the desired item.
2850     * @param defaultValue the value to be returned if no value of the desired
2851     * type is stored with the given name.
2852     *
2853     * @return the value of an item that previously added with putExtra()
2854     * or the default value if none was found.
2855     *
2856     * @see #putExtra(String, byte)
2857     */
2858    public byte getByteExtra(String name, byte defaultValue) {
2859        return mExtras == null ? defaultValue :
2860            mExtras.getByte(name, defaultValue);
2861    }
2862
2863    /**
2864     * Retrieve extended data from the intent.
2865     *
2866     * @param name The name of the desired item.
2867     * @param defaultValue the value to be returned if no value of the desired
2868     * type is stored with the given name.
2869     *
2870     * @return the value of an item that previously added with putExtra()
2871     * or the default value if none was found.
2872     *
2873     * @see #putExtra(String, short)
2874     */
2875    public short getShortExtra(String name, short defaultValue) {
2876        return mExtras == null ? defaultValue :
2877            mExtras.getShort(name, defaultValue);
2878    }
2879
2880    /**
2881     * Retrieve extended data from the intent.
2882     *
2883     * @param name The name of the desired item.
2884     * @param defaultValue the value to be returned if no value of the desired
2885     * type is stored with the given name.
2886     *
2887     * @return the value of an item that previously added with putExtra()
2888     * or the default value if none was found.
2889     *
2890     * @see #putExtra(String, char)
2891     */
2892    public char getCharExtra(String name, char defaultValue) {
2893        return mExtras == null ? defaultValue :
2894            mExtras.getChar(name, defaultValue);
2895    }
2896
2897    /**
2898     * Retrieve extended data from the intent.
2899     *
2900     * @param name The name of the desired item.
2901     * @param defaultValue the value to be returned if no value of the desired
2902     * type is stored with the given name.
2903     *
2904     * @return the value of an item that previously added with putExtra()
2905     * or the default value if none was found.
2906     *
2907     * @see #putExtra(String, int)
2908     */
2909    public int getIntExtra(String name, int defaultValue) {
2910        return mExtras == null ? defaultValue :
2911            mExtras.getInt(name, defaultValue);
2912    }
2913
2914    /**
2915     * Retrieve extended data from the intent.
2916     *
2917     * @param name The name of the desired item.
2918     * @param defaultValue the value to be returned if no value of the desired
2919     * type is stored with the given name.
2920     *
2921     * @return the value of an item that previously added with putExtra()
2922     * or the default value if none was found.
2923     *
2924     * @see #putExtra(String, long)
2925     */
2926    public long getLongExtra(String name, long defaultValue) {
2927        return mExtras == null ? defaultValue :
2928            mExtras.getLong(name, defaultValue);
2929    }
2930
2931    /**
2932     * Retrieve extended data from the intent.
2933     *
2934     * @param name The name of the desired item.
2935     * @param defaultValue the value to be returned if no value of the desired
2936     * type is stored with the given name.
2937     *
2938     * @return the value of an item that previously added with putExtra(),
2939     * or the default value if no such item is present
2940     *
2941     * @see #putExtra(String, float)
2942     */
2943    public float getFloatExtra(String name, float defaultValue) {
2944        return mExtras == null ? defaultValue :
2945            mExtras.getFloat(name, defaultValue);
2946    }
2947
2948    /**
2949     * Retrieve extended data from the intent.
2950     *
2951     * @param name The name of the desired item.
2952     * @param defaultValue the value to be returned if no value of the desired
2953     * type is stored with the given name.
2954     *
2955     * @return the value of an item that previously added with putExtra()
2956     * or the default value if none was found.
2957     *
2958     * @see #putExtra(String, double)
2959     */
2960    public double getDoubleExtra(String name, double defaultValue) {
2961        return mExtras == null ? defaultValue :
2962            mExtras.getDouble(name, defaultValue);
2963    }
2964
2965    /**
2966     * Retrieve extended data from the intent.
2967     *
2968     * @param name The name of the desired item.
2969     *
2970     * @return the value of an item that previously added with putExtra()
2971     * or null if no String value was found.
2972     *
2973     * @see #putExtra(String, String)
2974     */
2975    public String getStringExtra(String name) {
2976        return mExtras == null ? null : mExtras.getString(name);
2977    }
2978
2979    /**
2980     * Retrieve extended data from the intent.
2981     *
2982     * @param name The name of the desired item.
2983     *
2984     * @return the value of an item that previously added with putExtra()
2985     * or null if no CharSequence value was found.
2986     *
2987     * @see #putExtra(String, CharSequence)
2988     */
2989    public CharSequence getCharSequenceExtra(String name) {
2990        return mExtras == null ? null : mExtras.getCharSequence(name);
2991    }
2992
2993    /**
2994     * Retrieve extended data from the intent.
2995     *
2996     * @param name The name of the desired item.
2997     *
2998     * @return the value of an item that previously added with putExtra()
2999     * or null if no Parcelable value was found.
3000     *
3001     * @see #putExtra(String, Parcelable)
3002     */
3003    public <T extends Parcelable> T getParcelableExtra(String name) {
3004        return mExtras == null ? null : mExtras.<T>getParcelable(name);
3005    }
3006
3007    /**
3008     * Retrieve extended data from the intent.
3009     *
3010     * @param name The name of the desired item.
3011     *
3012     * @return the value of an item that previously added with putExtra()
3013     * or null if no Parcelable[] value was found.
3014     *
3015     * @see #putExtra(String, Parcelable[])
3016     */
3017    public Parcelable[] getParcelableArrayExtra(String name) {
3018        return mExtras == null ? null : mExtras.getParcelableArray(name);
3019    }
3020
3021    /**
3022     * Retrieve extended data from the intent.
3023     *
3024     * @param name The name of the desired item.
3025     *
3026     * @return the value of an item that previously added with putExtra()
3027     * or null if no ArrayList<Parcelable> value was found.
3028     *
3029     * @see #putParcelableArrayListExtra(String, ArrayList)
3030     */
3031    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
3032        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
3033    }
3034
3035    /**
3036     * Retrieve extended data from the intent.
3037     *
3038     * @param name The name of the desired item.
3039     *
3040     * @return the value of an item that previously added with putExtra()
3041     * or null if no Serializable value was found.
3042     *
3043     * @see #putExtra(String, Serializable)
3044     */
3045    public Serializable getSerializableExtra(String name) {
3046        return mExtras == null ? null : mExtras.getSerializable(name);
3047    }
3048
3049    /**
3050     * Retrieve extended data from the intent.
3051     *
3052     * @param name The name of the desired item.
3053     *
3054     * @return the value of an item that previously added with putExtra()
3055     * or null if no ArrayList<Integer> value was found.
3056     *
3057     * @see #putIntegerArrayListExtra(String, ArrayList)
3058     */
3059    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
3060        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
3061    }
3062
3063    /**
3064     * Retrieve extended data from the intent.
3065     *
3066     * @param name The name of the desired item.
3067     *
3068     * @return the value of an item that previously added with putExtra()
3069     * or null if no ArrayList<String> value was found.
3070     *
3071     * @see #putStringArrayListExtra(String, ArrayList)
3072     */
3073    public ArrayList<String> getStringArrayListExtra(String name) {
3074        return mExtras == null ? null : mExtras.getStringArrayList(name);
3075    }
3076
3077    /**
3078     * Retrieve extended data from the intent.
3079     *
3080     * @param name The name of the desired item.
3081     *
3082     * @return the value of an item that previously added with putExtra()
3083     * or null if no boolean array value was found.
3084     *
3085     * @see #putExtra(String, boolean[])
3086     */
3087    public boolean[] getBooleanArrayExtra(String name) {
3088        return mExtras == null ? null : mExtras.getBooleanArray(name);
3089    }
3090
3091    /**
3092     * Retrieve extended data from the intent.
3093     *
3094     * @param name The name of the desired item.
3095     *
3096     * @return the value of an item that previously added with putExtra()
3097     * or null if no byte array value was found.
3098     *
3099     * @see #putExtra(String, byte[])
3100     */
3101    public byte[] getByteArrayExtra(String name) {
3102        return mExtras == null ? null : mExtras.getByteArray(name);
3103    }
3104
3105    /**
3106     * Retrieve extended data from the intent.
3107     *
3108     * @param name The name of the desired item.
3109     *
3110     * @return the value of an item that previously added with putExtra()
3111     * or null if no short array value was found.
3112     *
3113     * @see #putExtra(String, short[])
3114     */
3115    public short[] getShortArrayExtra(String name) {
3116        return mExtras == null ? null : mExtras.getShortArray(name);
3117    }
3118
3119    /**
3120     * Retrieve extended data from the intent.
3121     *
3122     * @param name The name of the desired item.
3123     *
3124     * @return the value of an item that previously added with putExtra()
3125     * or null if no char array value was found.
3126     *
3127     * @see #putExtra(String, char[])
3128     */
3129    public char[] getCharArrayExtra(String name) {
3130        return mExtras == null ? null : mExtras.getCharArray(name);
3131    }
3132
3133    /**
3134     * Retrieve extended data from the intent.
3135     *
3136     * @param name The name of the desired item.
3137     *
3138     * @return the value of an item that previously added with putExtra()
3139     * or null if no int array value was found.
3140     *
3141     * @see #putExtra(String, int[])
3142     */
3143    public int[] getIntArrayExtra(String name) {
3144        return mExtras == null ? null : mExtras.getIntArray(name);
3145    }
3146
3147    /**
3148     * Retrieve extended data from the intent.
3149     *
3150     * @param name The name of the desired item.
3151     *
3152     * @return the value of an item that previously added with putExtra()
3153     * or null if no long array value was found.
3154     *
3155     * @see #putExtra(String, long[])
3156     */
3157    public long[] getLongArrayExtra(String name) {
3158        return mExtras == null ? null : mExtras.getLongArray(name);
3159    }
3160
3161    /**
3162     * Retrieve extended data from the intent.
3163     *
3164     * @param name The name of the desired item.
3165     *
3166     * @return the value of an item that previously added with putExtra()
3167     * or null if no float array value was found.
3168     *
3169     * @see #putExtra(String, float[])
3170     */
3171    public float[] getFloatArrayExtra(String name) {
3172        return mExtras == null ? null : mExtras.getFloatArray(name);
3173    }
3174
3175    /**
3176     * Retrieve extended data from the intent.
3177     *
3178     * @param name The name of the desired item.
3179     *
3180     * @return the value of an item that previously added with putExtra()
3181     * or null if no double array value was found.
3182     *
3183     * @see #putExtra(String, double[])
3184     */
3185    public double[] getDoubleArrayExtra(String name) {
3186        return mExtras == null ? null : mExtras.getDoubleArray(name);
3187    }
3188
3189    /**
3190     * Retrieve extended data from the intent.
3191     *
3192     * @param name The name of the desired item.
3193     *
3194     * @return the value of an item that previously added with putExtra()
3195     * or null if no String array value was found.
3196     *
3197     * @see #putExtra(String, String[])
3198     */
3199    public String[] getStringArrayExtra(String name) {
3200        return mExtras == null ? null : mExtras.getStringArray(name);
3201    }
3202
3203    /**
3204     * Retrieve extended data from the intent.
3205     *
3206     * @param name The name of the desired item.
3207     *
3208     * @return the value of an item that previously added with putExtra()
3209     * or null if no Bundle value was found.
3210     *
3211     * @see #putExtra(String, Bundle)
3212     */
3213    public Bundle getBundleExtra(String name) {
3214        return mExtras == null ? null : mExtras.getBundle(name);
3215    }
3216
3217    /**
3218     * Retrieve extended data from the intent.
3219     *
3220     * @param name The name of the desired item.
3221     *
3222     * @return the value of an item that previously added with putExtra()
3223     * or null if no IBinder value was found.
3224     *
3225     * @see #putExtra(String, IBinder)
3226     *
3227     * @deprecated
3228     * @hide
3229     */
3230    @Deprecated
3231    public IBinder getIBinderExtra(String name) {
3232        return mExtras == null ? null : mExtras.getIBinder(name);
3233    }
3234
3235    /**
3236     * Retrieve extended data from the intent.
3237     *
3238     * @param name The name of the desired item.
3239     * @param defaultValue The default value to return in case no item is
3240     * associated with the key 'name'
3241     *
3242     * @return the value of an item that previously added with putExtra()
3243     * or defaultValue if none was found.
3244     *
3245     * @see #putExtra
3246     *
3247     * @deprecated
3248     * @hide
3249     */
3250    @Deprecated
3251    public Object getExtra(String name, Object defaultValue) {
3252        Object result = defaultValue;
3253        if (mExtras != null) {
3254            Object result2 = mExtras.get(name);
3255            if (result2 != null) {
3256                result = result2;
3257            }
3258        }
3259
3260        return result;
3261    }
3262
3263    /**
3264     * Retrieves a map of extended data from the intent.
3265     *
3266     * @return the map of all extras previously added with putExtra(),
3267     * or null if none have been added.
3268     */
3269    public Bundle getExtras() {
3270        return (mExtras != null)
3271                ? new Bundle(mExtras)
3272                : null;
3273    }
3274
3275    /**
3276     * Retrieve any special flags associated with this intent.  You will
3277     * normally just set them with {@link #setFlags} and let the system
3278     * take the appropriate action with them.
3279     *
3280     * @return int The currently set flags.
3281     *
3282     * @see #setFlags
3283     */
3284    public int getFlags() {
3285        return mFlags;
3286    }
3287
3288    /**
3289     * Retrieve the application package name this Intent is limited to.  When
3290     * resolving an Intent, if non-null this limits the resolution to only
3291     * components in the given application package.
3292     *
3293     * @return The name of the application package for the Intent.
3294     *
3295     * @see #resolveActivity
3296     * @see #setPackage
3297     */
3298    public String getPackage() {
3299        return mPackage;
3300    }
3301
3302    /**
3303     * Retrieve the concrete component associated with the intent.  When receiving
3304     * an intent, this is the component that was found to best handle it (that is,
3305     * yourself) and will always be non-null; in all other cases it will be
3306     * null unless explicitly set.
3307     *
3308     * @return The name of the application component to handle the intent.
3309     *
3310     * @see #resolveActivity
3311     * @see #setComponent
3312     */
3313    public ComponentName getComponent() {
3314        return mComponent;
3315    }
3316
3317    /**
3318     * Return the Activity component that should be used to handle this intent.
3319     * The appropriate component is determined based on the information in the
3320     * intent, evaluated as follows:
3321     *
3322     * <p>If {@link #getComponent} returns an explicit class, that is returned
3323     * without any further consideration.
3324     *
3325     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
3326     * category to be considered.
3327     *
3328     * <p>If {@link #getAction} is non-NULL, the activity must handle this
3329     * action.
3330     *
3331     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
3332     * this type.
3333     *
3334     * <p>If {@link #addCategory} has added any categories, the activity must
3335     * handle ALL of the categories specified.
3336     *
3337     * <p>If {@link #getPackage} is non-NULL, only activity components in
3338     * that application package will be considered.
3339     *
3340     * <p>If there are no activities that satisfy all of these conditions, a
3341     * null string is returned.
3342     *
3343     * <p>If multiple activities are found to satisfy the intent, the one with
3344     * the highest priority will be used.  If there are multiple activities
3345     * with the same priority, the system will either pick the best activity
3346     * based on user preference, or resolve to a system class that will allow
3347     * the user to pick an activity and forward from there.
3348     *
3349     * <p>This method is implemented simply by calling
3350     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
3351     * true.</p>
3352     * <p> This API is called for you as part of starting an activity from an
3353     * intent.  You do not normally need to call it yourself.</p>
3354     *
3355     * @param pm The package manager with which to resolve the Intent.
3356     *
3357     * @return Name of the component implementing an activity that can
3358     *         display the intent.
3359     *
3360     * @see #setComponent
3361     * @see #getComponent
3362     * @see #resolveActivityInfo
3363     */
3364    public ComponentName resolveActivity(PackageManager pm) {
3365        if (mComponent != null) {
3366            return mComponent;
3367        }
3368
3369        ResolveInfo info = pm.resolveActivity(
3370            this, PackageManager.MATCH_DEFAULT_ONLY);
3371        if (info != null) {
3372            return new ComponentName(
3373                    info.activityInfo.applicationInfo.packageName,
3374                    info.activityInfo.name);
3375        }
3376
3377        return null;
3378    }
3379
3380    /**
3381     * Resolve the Intent into an {@link ActivityInfo}
3382     * describing the activity that should execute the intent.  Resolution
3383     * follows the same rules as described for {@link #resolveActivity}, but
3384     * you get back the completely information about the resolved activity
3385     * instead of just its class name.
3386     *
3387     * @param pm The package manager with which to resolve the Intent.
3388     * @param flags Addition information to retrieve as per
3389     * {@link PackageManager#getActivityInfo(ComponentName, int)
3390     * PackageManager.getActivityInfo()}.
3391     *
3392     * @return PackageManager.ActivityInfo
3393     *
3394     * @see #resolveActivity
3395     */
3396    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
3397        ActivityInfo ai = null;
3398        if (mComponent != null) {
3399            try {
3400                ai = pm.getActivityInfo(mComponent, flags);
3401            } catch (PackageManager.NameNotFoundException e) {
3402                // ignore
3403            }
3404        } else {
3405            ResolveInfo info = pm.resolveActivity(
3406                this, PackageManager.MATCH_DEFAULT_ONLY);
3407            if (info != null) {
3408                ai = info.activityInfo;
3409            }
3410        }
3411
3412        return ai;
3413    }
3414
3415    /**
3416     * Set the general action to be performed.
3417     *
3418     * @param action An action name, such as ACTION_VIEW.  Application-specific
3419     *               actions should be prefixed with the vendor's package name.
3420     *
3421     * @return Returns the same Intent object, for chaining multiple calls
3422     * into a single statement.
3423     *
3424     * @see #getAction
3425     */
3426    public Intent setAction(String action) {
3427        mAction = action;
3428        return this;
3429    }
3430
3431    /**
3432     * Set the data this intent is operating on.  This method automatically
3433     * clears any type that was previously set by {@link #setType}.
3434     *
3435     * <p><em>Note: scheme and host name matching in the Android framework is
3436     * case-sensitive, unlike the formal RFC.  As a result,
3437     * you should always ensure that you write your Uri with these elements
3438     * using lower case letters, and normalize any Uris you receive from
3439     * outside of Android to ensure the scheme and host is lower case.</em></p>
3440     *
3441     * @param data The URI of the data this intent is now targeting.
3442     *
3443     * @return Returns the same Intent object, for chaining multiple calls
3444     * into a single statement.
3445     *
3446     * @see #getData
3447     * @see #setType
3448     * @see #setDataAndType
3449     */
3450    public Intent setData(Uri data) {
3451        mData = data;
3452        mType = null;
3453        return this;
3454    }
3455
3456    /**
3457     * Set an explicit MIME data type.  This is used to create intents that
3458     * only specify a type and not data, for example to indicate the type of
3459     * data to return.  This method automatically clears any data that was
3460     * previously set by {@link #setData}.
3461     *
3462     * <p><em>Note: MIME type matching in the Android framework is
3463     * case-sensitive, unlike formal RFC MIME types.  As a result,
3464     * you should always write your MIME types with lower case letters,
3465     * and any MIME types you receive from outside of Android should be
3466     * converted to lower case before supplying them here.</em></p>
3467     *
3468     * @param type The MIME type of the data being handled by this intent.
3469     *
3470     * @return Returns the same Intent object, for chaining multiple calls
3471     * into a single statement.
3472     *
3473     * @see #getType
3474     * @see #setData
3475     * @see #setDataAndType
3476     */
3477    public Intent setType(String type) {
3478        mData = null;
3479        mType = type;
3480        return this;
3481    }
3482
3483    /**
3484     * (Usually optional) Set the data for the intent along with an explicit
3485     * MIME data type.  This method should very rarely be used -- it allows you
3486     * to override the MIME type that would ordinarily be inferred from the
3487     * data with your own type given here.
3488     *
3489     * <p><em>Note: MIME type, Uri scheme, and host name matching in the
3490     * Android framework is case-sensitive, unlike the formal RFC definitions.
3491     * As a result, you should always write these elements with lower case letters,
3492     * and normalize any MIME types or Uris you receive from
3493     * outside of Android to ensure these elements are lower case before
3494     * supplying them here.</em></p>
3495     *
3496     * @param data The URI of the data this intent is now targeting.
3497     * @param type The MIME type of the data being handled by this intent.
3498     *
3499     * @return Returns the same Intent object, for chaining multiple calls
3500     * into a single statement.
3501     *
3502     * @see #setData
3503     * @see #setType
3504     */
3505    public Intent setDataAndType(Uri data, String type) {
3506        mData = data;
3507        mType = type;
3508        return this;
3509    }
3510
3511    /**
3512     * Add a new category to the intent.  Categories provide additional detail
3513     * about the action the intent is perform.  When resolving an intent, only
3514     * activities that provide <em>all</em> of the requested categories will be
3515     * used.
3516     *
3517     * @param category The desired category.  This can be either one of the
3518     *               predefined Intent categories, or a custom category in your own
3519     *               namespace.
3520     *
3521     * @return Returns the same Intent object, for chaining multiple calls
3522     * into a single statement.
3523     *
3524     * @see #hasCategory
3525     * @see #removeCategory
3526     */
3527    public Intent addCategory(String category) {
3528        if (mCategories == null) {
3529            mCategories = new HashSet<String>();
3530        }
3531        mCategories.add(category);
3532        return this;
3533    }
3534
3535    /**
3536     * Remove an category from an intent.
3537     *
3538     * @param category The category to remove.
3539     *
3540     * @see #addCategory
3541     */
3542    public void removeCategory(String category) {
3543        if (mCategories != null) {
3544            mCategories.remove(category);
3545            if (mCategories.size() == 0) {
3546                mCategories = null;
3547            }
3548        }
3549    }
3550
3551    /**
3552     * Add extended data to the intent.  The name must include a package
3553     * prefix, for example the app com.android.contacts would use names
3554     * like "com.android.contacts.ShowAll".
3555     *
3556     * @param name The name of the extra data, with package prefix.
3557     * @param value The boolean data value.
3558     *
3559     * @return Returns the same Intent object, for chaining multiple calls
3560     * into a single statement.
3561     *
3562     * @see #putExtras
3563     * @see #removeExtra
3564     * @see #getBooleanExtra(String, boolean)
3565     */
3566    public Intent putExtra(String name, boolean value) {
3567        if (mExtras == null) {
3568            mExtras = new Bundle();
3569        }
3570        mExtras.putBoolean(name, value);
3571        return this;
3572    }
3573
3574    /**
3575     * Add extended data to the intent.  The name must include a package
3576     * prefix, for example the app com.android.contacts would use names
3577     * like "com.android.contacts.ShowAll".
3578     *
3579     * @param name The name of the extra data, with package prefix.
3580     * @param value The byte data value.
3581     *
3582     * @return Returns the same Intent object, for chaining multiple calls
3583     * into a single statement.
3584     *
3585     * @see #putExtras
3586     * @see #removeExtra
3587     * @see #getByteExtra(String, byte)
3588     */
3589    public Intent putExtra(String name, byte value) {
3590        if (mExtras == null) {
3591            mExtras = new Bundle();
3592        }
3593        mExtras.putByte(name, value);
3594        return this;
3595    }
3596
3597    /**
3598     * Add extended data to the intent.  The name must include a package
3599     * prefix, for example the app com.android.contacts would use names
3600     * like "com.android.contacts.ShowAll".
3601     *
3602     * @param name The name of the extra data, with package prefix.
3603     * @param value The char data value.
3604     *
3605     * @return Returns the same Intent object, for chaining multiple calls
3606     * into a single statement.
3607     *
3608     * @see #putExtras
3609     * @see #removeExtra
3610     * @see #getCharExtra(String, char)
3611     */
3612    public Intent putExtra(String name, char value) {
3613        if (mExtras == null) {
3614            mExtras = new Bundle();
3615        }
3616        mExtras.putChar(name, value);
3617        return this;
3618    }
3619
3620    /**
3621     * Add extended data to the intent.  The name must include a package
3622     * prefix, for example the app com.android.contacts would use names
3623     * like "com.android.contacts.ShowAll".
3624     *
3625     * @param name The name of the extra data, with package prefix.
3626     * @param value The short data value.
3627     *
3628     * @return Returns the same Intent object, for chaining multiple calls
3629     * into a single statement.
3630     *
3631     * @see #putExtras
3632     * @see #removeExtra
3633     * @see #getShortExtra(String, short)
3634     */
3635    public Intent putExtra(String name, short value) {
3636        if (mExtras == null) {
3637            mExtras = new Bundle();
3638        }
3639        mExtras.putShort(name, value);
3640        return this;
3641    }
3642
3643    /**
3644     * Add extended data to the intent.  The name must include a package
3645     * prefix, for example the app com.android.contacts would use names
3646     * like "com.android.contacts.ShowAll".
3647     *
3648     * @param name The name of the extra data, with package prefix.
3649     * @param value The integer data value.
3650     *
3651     * @return Returns the same Intent object, for chaining multiple calls
3652     * into a single statement.
3653     *
3654     * @see #putExtras
3655     * @see #removeExtra
3656     * @see #getIntExtra(String, int)
3657     */
3658    public Intent putExtra(String name, int value) {
3659        if (mExtras == null) {
3660            mExtras = new Bundle();
3661        }
3662        mExtras.putInt(name, value);
3663        return this;
3664    }
3665
3666    /**
3667     * Add extended data to the intent.  The name must include a package
3668     * prefix, for example the app com.android.contacts would use names
3669     * like "com.android.contacts.ShowAll".
3670     *
3671     * @param name The name of the extra data, with package prefix.
3672     * @param value The long data value.
3673     *
3674     * @return Returns the same Intent object, for chaining multiple calls
3675     * into a single statement.
3676     *
3677     * @see #putExtras
3678     * @see #removeExtra
3679     * @see #getLongExtra(String, long)
3680     */
3681    public Intent putExtra(String name, long value) {
3682        if (mExtras == null) {
3683            mExtras = new Bundle();
3684        }
3685        mExtras.putLong(name, value);
3686        return this;
3687    }
3688
3689    /**
3690     * Add extended data to the intent.  The name must include a package
3691     * prefix, for example the app com.android.contacts would use names
3692     * like "com.android.contacts.ShowAll".
3693     *
3694     * @param name The name of the extra data, with package prefix.
3695     * @param value The float data value.
3696     *
3697     * @return Returns the same Intent object, for chaining multiple calls
3698     * into a single statement.
3699     *
3700     * @see #putExtras
3701     * @see #removeExtra
3702     * @see #getFloatExtra(String, float)
3703     */
3704    public Intent putExtra(String name, float value) {
3705        if (mExtras == null) {
3706            mExtras = new Bundle();
3707        }
3708        mExtras.putFloat(name, value);
3709        return this;
3710    }
3711
3712    /**
3713     * Add extended data to the intent.  The name must include a package
3714     * prefix, for example the app com.android.contacts would use names
3715     * like "com.android.contacts.ShowAll".
3716     *
3717     * @param name The name of the extra data, with package prefix.
3718     * @param value The double data value.
3719     *
3720     * @return Returns the same Intent object, for chaining multiple calls
3721     * into a single statement.
3722     *
3723     * @see #putExtras
3724     * @see #removeExtra
3725     * @see #getDoubleExtra(String, double)
3726     */
3727    public Intent putExtra(String name, double value) {
3728        if (mExtras == null) {
3729            mExtras = new Bundle();
3730        }
3731        mExtras.putDouble(name, value);
3732        return this;
3733    }
3734
3735    /**
3736     * Add extended data to the intent.  The name must include a package
3737     * prefix, for example the app com.android.contacts would use names
3738     * like "com.android.contacts.ShowAll".
3739     *
3740     * @param name The name of the extra data, with package prefix.
3741     * @param value The String data value.
3742     *
3743     * @return Returns the same Intent object, for chaining multiple calls
3744     * into a single statement.
3745     *
3746     * @see #putExtras
3747     * @see #removeExtra
3748     * @see #getStringExtra(String)
3749     */
3750    public Intent putExtra(String name, String value) {
3751        if (mExtras == null) {
3752            mExtras = new Bundle();
3753        }
3754        mExtras.putString(name, value);
3755        return this;
3756    }
3757
3758    /**
3759     * Add extended data to the intent.  The name must include a package
3760     * prefix, for example the app com.android.contacts would use names
3761     * like "com.android.contacts.ShowAll".
3762     *
3763     * @param name The name of the extra data, with package prefix.
3764     * @param value The CharSequence data value.
3765     *
3766     * @return Returns the same Intent object, for chaining multiple calls
3767     * into a single statement.
3768     *
3769     * @see #putExtras
3770     * @see #removeExtra
3771     * @see #getCharSequenceExtra(String)
3772     */
3773    public Intent putExtra(String name, CharSequence value) {
3774        if (mExtras == null) {
3775            mExtras = new Bundle();
3776        }
3777        mExtras.putCharSequence(name, value);
3778        return this;
3779    }
3780
3781    /**
3782     * Add extended data to the intent.  The name must include a package
3783     * prefix, for example the app com.android.contacts would use names
3784     * like "com.android.contacts.ShowAll".
3785     *
3786     * @param name The name of the extra data, with package prefix.
3787     * @param value The Parcelable data value.
3788     *
3789     * @return Returns the same Intent object, for chaining multiple calls
3790     * into a single statement.
3791     *
3792     * @see #putExtras
3793     * @see #removeExtra
3794     * @see #getParcelableExtra(String)
3795     */
3796    public Intent putExtra(String name, Parcelable value) {
3797        if (mExtras == null) {
3798            mExtras = new Bundle();
3799        }
3800        mExtras.putParcelable(name, value);
3801        return this;
3802    }
3803
3804    /**
3805     * Add extended data to the intent.  The name must include a package
3806     * prefix, for example the app com.android.contacts would use names
3807     * like "com.android.contacts.ShowAll".
3808     *
3809     * @param name The name of the extra data, with package prefix.
3810     * @param value The Parcelable[] data value.
3811     *
3812     * @return Returns the same Intent object, for chaining multiple calls
3813     * into a single statement.
3814     *
3815     * @see #putExtras
3816     * @see #removeExtra
3817     * @see #getParcelableArrayExtra(String)
3818     */
3819    public Intent putExtra(String name, Parcelable[] value) {
3820        if (mExtras == null) {
3821            mExtras = new Bundle();
3822        }
3823        mExtras.putParcelableArray(name, value);
3824        return this;
3825    }
3826
3827    /**
3828     * Add extended data to the intent.  The name must include a package
3829     * prefix, for example the app com.android.contacts would use names
3830     * like "com.android.contacts.ShowAll".
3831     *
3832     * @param name The name of the extra data, with package prefix.
3833     * @param value The ArrayList<Parcelable> data value.
3834     *
3835     * @return Returns the same Intent object, for chaining multiple calls
3836     * into a single statement.
3837     *
3838     * @see #putExtras
3839     * @see #removeExtra
3840     * @see #getParcelableArrayListExtra(String)
3841     */
3842    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3843        if (mExtras == null) {
3844            mExtras = new Bundle();
3845        }
3846        mExtras.putParcelableArrayList(name, value);
3847        return this;
3848    }
3849
3850    /**
3851     * Add extended data to the intent.  The name must include a package
3852     * prefix, for example the app com.android.contacts would use names
3853     * like "com.android.contacts.ShowAll".
3854     *
3855     * @param name The name of the extra data, with package prefix.
3856     * @param value The ArrayList<Integer> data value.
3857     *
3858     * @return Returns the same Intent object, for chaining multiple calls
3859     * into a single statement.
3860     *
3861     * @see #putExtras
3862     * @see #removeExtra
3863     * @see #getIntegerArrayListExtra(String)
3864     */
3865    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3866        if (mExtras == null) {
3867            mExtras = new Bundle();
3868        }
3869        mExtras.putIntegerArrayList(name, value);
3870        return this;
3871    }
3872
3873    /**
3874     * Add extended data to the intent.  The name must include a package
3875     * prefix, for example the app com.android.contacts would use names
3876     * like "com.android.contacts.ShowAll".
3877     *
3878     * @param name The name of the extra data, with package prefix.
3879     * @param value The ArrayList<String> data value.
3880     *
3881     * @return Returns the same Intent object, for chaining multiple calls
3882     * into a single statement.
3883     *
3884     * @see #putExtras
3885     * @see #removeExtra
3886     * @see #getStringArrayListExtra(String)
3887     */
3888    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3889        if (mExtras == null) {
3890            mExtras = new Bundle();
3891        }
3892        mExtras.putStringArrayList(name, value);
3893        return this;
3894    }
3895
3896    /**
3897     * Add extended data to the intent.  The name must include a package
3898     * prefix, for example the app com.android.contacts would use names
3899     * like "com.android.contacts.ShowAll".
3900     *
3901     * @param name The name of the extra data, with package prefix.
3902     * @param value The Serializable data value.
3903     *
3904     * @return Returns the same Intent object, for chaining multiple calls
3905     * into a single statement.
3906     *
3907     * @see #putExtras
3908     * @see #removeExtra
3909     * @see #getSerializableExtra(String)
3910     */
3911    public Intent putExtra(String name, Serializable value) {
3912        if (mExtras == null) {
3913            mExtras = new Bundle();
3914        }
3915        mExtras.putSerializable(name, value);
3916        return this;
3917    }
3918
3919    /**
3920     * Add extended data to the intent.  The name must include a package
3921     * prefix, for example the app com.android.contacts would use names
3922     * like "com.android.contacts.ShowAll".
3923     *
3924     * @param name The name of the extra data, with package prefix.
3925     * @param value The boolean array data value.
3926     *
3927     * @return Returns the same Intent object, for chaining multiple calls
3928     * into a single statement.
3929     *
3930     * @see #putExtras
3931     * @see #removeExtra
3932     * @see #getBooleanArrayExtra(String)
3933     */
3934    public Intent putExtra(String name, boolean[] value) {
3935        if (mExtras == null) {
3936            mExtras = new Bundle();
3937        }
3938        mExtras.putBooleanArray(name, value);
3939        return this;
3940    }
3941
3942    /**
3943     * Add extended data to the intent.  The name must include a package
3944     * prefix, for example the app com.android.contacts would use names
3945     * like "com.android.contacts.ShowAll".
3946     *
3947     * @param name The name of the extra data, with package prefix.
3948     * @param value The byte array data value.
3949     *
3950     * @return Returns the same Intent object, for chaining multiple calls
3951     * into a single statement.
3952     *
3953     * @see #putExtras
3954     * @see #removeExtra
3955     * @see #getByteArrayExtra(String)
3956     */
3957    public Intent putExtra(String name, byte[] value) {
3958        if (mExtras == null) {
3959            mExtras = new Bundle();
3960        }
3961        mExtras.putByteArray(name, value);
3962        return this;
3963    }
3964
3965    /**
3966     * Add extended data to the intent.  The name must include a package
3967     * prefix, for example the app com.android.contacts would use names
3968     * like "com.android.contacts.ShowAll".
3969     *
3970     * @param name The name of the extra data, with package prefix.
3971     * @param value The short array data value.
3972     *
3973     * @return Returns the same Intent object, for chaining multiple calls
3974     * into a single statement.
3975     *
3976     * @see #putExtras
3977     * @see #removeExtra
3978     * @see #getShortArrayExtra(String)
3979     */
3980    public Intent putExtra(String name, short[] value) {
3981        if (mExtras == null) {
3982            mExtras = new Bundle();
3983        }
3984        mExtras.putShortArray(name, value);
3985        return this;
3986    }
3987
3988    /**
3989     * Add extended data to the intent.  The name must include a package
3990     * prefix, for example the app com.android.contacts would use names
3991     * like "com.android.contacts.ShowAll".
3992     *
3993     * @param name The name of the extra data, with package prefix.
3994     * @param value The char array data value.
3995     *
3996     * @return Returns the same Intent object, for chaining multiple calls
3997     * into a single statement.
3998     *
3999     * @see #putExtras
4000     * @see #removeExtra
4001     * @see #getCharArrayExtra(String)
4002     */
4003    public Intent putExtra(String name, char[] value) {
4004        if (mExtras == null) {
4005            mExtras = new Bundle();
4006        }
4007        mExtras.putCharArray(name, value);
4008        return this;
4009    }
4010
4011    /**
4012     * Add extended data to the intent.  The name must include a package
4013     * prefix, for example the app com.android.contacts would use names
4014     * like "com.android.contacts.ShowAll".
4015     *
4016     * @param name The name of the extra data, with package prefix.
4017     * @param value The int array data value.
4018     *
4019     * @return Returns the same Intent object, for chaining multiple calls
4020     * into a single statement.
4021     *
4022     * @see #putExtras
4023     * @see #removeExtra
4024     * @see #getIntArrayExtra(String)
4025     */
4026    public Intent putExtra(String name, int[] value) {
4027        if (mExtras == null) {
4028            mExtras = new Bundle();
4029        }
4030        mExtras.putIntArray(name, value);
4031        return this;
4032    }
4033
4034    /**
4035     * Add extended data to the intent.  The name must include a package
4036     * prefix, for example the app com.android.contacts would use names
4037     * like "com.android.contacts.ShowAll".
4038     *
4039     * @param name The name of the extra data, with package prefix.
4040     * @param value The byte array data value.
4041     *
4042     * @return Returns the same Intent object, for chaining multiple calls
4043     * into a single statement.
4044     *
4045     * @see #putExtras
4046     * @see #removeExtra
4047     * @see #getLongArrayExtra(String)
4048     */
4049    public Intent putExtra(String name, long[] value) {
4050        if (mExtras == null) {
4051            mExtras = new Bundle();
4052        }
4053        mExtras.putLongArray(name, value);
4054        return this;
4055    }
4056
4057    /**
4058     * Add extended data to the intent.  The name must include a package
4059     * prefix, for example the app com.android.contacts would use names
4060     * like "com.android.contacts.ShowAll".
4061     *
4062     * @param name The name of the extra data, with package prefix.
4063     * @param value The float array data value.
4064     *
4065     * @return Returns the same Intent object, for chaining multiple calls
4066     * into a single statement.
4067     *
4068     * @see #putExtras
4069     * @see #removeExtra
4070     * @see #getFloatArrayExtra(String)
4071     */
4072    public Intent putExtra(String name, float[] value) {
4073        if (mExtras == null) {
4074            mExtras = new Bundle();
4075        }
4076        mExtras.putFloatArray(name, value);
4077        return this;
4078    }
4079
4080    /**
4081     * Add extended data to the intent.  The name must include a package
4082     * prefix, for example the app com.android.contacts would use names
4083     * like "com.android.contacts.ShowAll".
4084     *
4085     * @param name The name of the extra data, with package prefix.
4086     * @param value The double array data value.
4087     *
4088     * @return Returns the same Intent object, for chaining multiple calls
4089     * into a single statement.
4090     *
4091     * @see #putExtras
4092     * @see #removeExtra
4093     * @see #getDoubleArrayExtra(String)
4094     */
4095    public Intent putExtra(String name, double[] value) {
4096        if (mExtras == null) {
4097            mExtras = new Bundle();
4098        }
4099        mExtras.putDoubleArray(name, value);
4100        return this;
4101    }
4102
4103    /**
4104     * Add extended data to the intent.  The name must include a package
4105     * prefix, for example the app com.android.contacts would use names
4106     * like "com.android.contacts.ShowAll".
4107     *
4108     * @param name The name of the extra data, with package prefix.
4109     * @param value The String array data value.
4110     *
4111     * @return Returns the same Intent object, for chaining multiple calls
4112     * into a single statement.
4113     *
4114     * @see #putExtras
4115     * @see #removeExtra
4116     * @see #getStringArrayExtra(String)
4117     */
4118    public Intent putExtra(String name, String[] value) {
4119        if (mExtras == null) {
4120            mExtras = new Bundle();
4121        }
4122        mExtras.putStringArray(name, value);
4123        return this;
4124    }
4125
4126    /**
4127     * Add extended data to the intent.  The name must include a package
4128     * prefix, for example the app com.android.contacts would use names
4129     * like "com.android.contacts.ShowAll".
4130     *
4131     * @param name The name of the extra data, with package prefix.
4132     * @param value The Bundle data value.
4133     *
4134     * @return Returns the same Intent object, for chaining multiple calls
4135     * into a single statement.
4136     *
4137     * @see #putExtras
4138     * @see #removeExtra
4139     * @see #getBundleExtra(String)
4140     */
4141    public Intent putExtra(String name, Bundle value) {
4142        if (mExtras == null) {
4143            mExtras = new Bundle();
4144        }
4145        mExtras.putBundle(name, value);
4146        return this;
4147    }
4148
4149    /**
4150     * Add extended data to the intent.  The name must include a package
4151     * prefix, for example the app com.android.contacts would use names
4152     * like "com.android.contacts.ShowAll".
4153     *
4154     * @param name The name of the extra data, with package prefix.
4155     * @param value The IBinder data value.
4156     *
4157     * @return Returns the same Intent object, for chaining multiple calls
4158     * into a single statement.
4159     *
4160     * @see #putExtras
4161     * @see #removeExtra
4162     * @see #getIBinderExtra(String)
4163     *
4164     * @deprecated
4165     * @hide
4166     */
4167    @Deprecated
4168    public Intent putExtra(String name, IBinder value) {
4169        if (mExtras == null) {
4170            mExtras = new Bundle();
4171        }
4172        mExtras.putIBinder(name, value);
4173        return this;
4174    }
4175
4176    /**
4177     * Copy all extras in 'src' in to this intent.
4178     *
4179     * @param src Contains the extras to copy.
4180     *
4181     * @see #putExtra
4182     */
4183    public Intent putExtras(Intent src) {
4184        if (src.mExtras != null) {
4185            if (mExtras == null) {
4186                mExtras = new Bundle(src.mExtras);
4187            } else {
4188                mExtras.putAll(src.mExtras);
4189            }
4190        }
4191        return this;
4192    }
4193
4194    /**
4195     * Add a set of extended data to the intent.  The keys must include a package
4196     * prefix, for example the app com.android.contacts would use names
4197     * like "com.android.contacts.ShowAll".
4198     *
4199     * @param extras The Bundle of extras to add to this intent.
4200     *
4201     * @see #putExtra
4202     * @see #removeExtra
4203     */
4204    public Intent putExtras(Bundle extras) {
4205        if (mExtras == null) {
4206            mExtras = new Bundle();
4207        }
4208        mExtras.putAll(extras);
4209        return this;
4210    }
4211
4212    /**
4213     * Completely replace the extras in the Intent with the extras in the
4214     * given Intent.
4215     *
4216     * @param src The exact extras contained in this Intent are copied
4217     * into the target intent, replacing any that were previously there.
4218     */
4219    public Intent replaceExtras(Intent src) {
4220        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
4221        return this;
4222    }
4223
4224    /**
4225     * Completely replace the extras in the Intent with the given Bundle of
4226     * extras.
4227     *
4228     * @param extras The new set of extras in the Intent, or null to erase
4229     * all extras.
4230     */
4231    public Intent replaceExtras(Bundle extras) {
4232        mExtras = extras != null ? new Bundle(extras) : null;
4233        return this;
4234    }
4235
4236    /**
4237     * Remove extended data from the intent.
4238     *
4239     * @see #putExtra
4240     */
4241    public void removeExtra(String name) {
4242        if (mExtras != null) {
4243            mExtras.remove(name);
4244            if (mExtras.size() == 0) {
4245                mExtras = null;
4246            }
4247        }
4248    }
4249
4250    /**
4251     * Set special flags controlling how this intent is handled.  Most values
4252     * here depend on the type of component being executed by the Intent,
4253     * specifically the FLAG_ACTIVITY_* flags are all for use with
4254     * {@link Context#startActivity Context.startActivity()} and the
4255     * FLAG_RECEIVER_* flags are all for use with
4256     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
4257     *
4258     * <p>See the <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
4259     * Activities and Tasks</a> documentation for important information on how some of these options impact
4260     * the behavior of your application.
4261     *
4262     * @param flags The desired flags.
4263     *
4264     * @return Returns the same Intent object, for chaining multiple calls
4265     * into a single statement.
4266     *
4267     * @see #getFlags
4268     * @see #addFlags
4269     *
4270     * @see #FLAG_GRANT_READ_URI_PERMISSION
4271     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
4272     * @see #FLAG_DEBUG_LOG_RESOLUTION
4273     * @see #FLAG_FROM_BACKGROUND
4274     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
4275     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
4276     * @see #FLAG_ACTIVITY_CLEAR_TOP
4277     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
4278     * @see #FLAG_ACTIVITY_FORWARD_RESULT
4279     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
4280     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
4281     * @see #FLAG_ACTIVITY_NEW_TASK
4282     * @see #FLAG_ACTIVITY_NO_HISTORY
4283     * @see #FLAG_ACTIVITY_NO_USER_ACTION
4284     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
4285     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
4286     * @see #FLAG_ACTIVITY_SINGLE_TOP
4287     * @see #FLAG_RECEIVER_REGISTERED_ONLY
4288     */
4289    public Intent setFlags(int flags) {
4290        mFlags = flags;
4291        return this;
4292    }
4293
4294    /**
4295     * Add additional flags to the intent (or with existing flags
4296     * value).
4297     *
4298     * @param flags The new flags to set.
4299     *
4300     * @return Returns the same Intent object, for chaining multiple calls
4301     * into a single statement.
4302     *
4303     * @see #setFlags
4304     */
4305    public Intent addFlags(int flags) {
4306        mFlags |= flags;
4307        return this;
4308    }
4309
4310    /**
4311     * (Usually optional) Set an explicit application package name that limits
4312     * the components this Intent will resolve to.  If left to the default
4313     * value of null, all components in all applications will considered.
4314     * If non-null, the Intent can only match the components in the given
4315     * application package.
4316     *
4317     * @param packageName The name of the application package to handle the
4318     * intent, or null to allow any application package.
4319     *
4320     * @return Returns the same Intent object, for chaining multiple calls
4321     * into a single statement.
4322     *
4323     * @see #getPackage
4324     * @see #resolveActivity
4325     */
4326    public Intent setPackage(String packageName) {
4327        mPackage = packageName;
4328        return this;
4329    }
4330
4331    /**
4332     * (Usually optional) Explicitly set the component to handle the intent.
4333     * If left with the default value of null, the system will determine the
4334     * appropriate class to use based on the other fields (action, data,
4335     * type, categories) in the Intent.  If this class is defined, the
4336     * specified class will always be used regardless of the other fields.  You
4337     * should only set this value when you know you absolutely want a specific
4338     * class to be used; otherwise it is better to let the system find the
4339     * appropriate class so that you will respect the installed applications
4340     * and user preferences.
4341     *
4342     * @param component The name of the application component to handle the
4343     * intent, or null to let the system find one for you.
4344     *
4345     * @return Returns the same Intent object, for chaining multiple calls
4346     * into a single statement.
4347     *
4348     * @see #setClass
4349     * @see #setClassName(Context, String)
4350     * @see #setClassName(String, String)
4351     * @see #getComponent
4352     * @see #resolveActivity
4353     */
4354    public Intent setComponent(ComponentName component) {
4355        mComponent = component;
4356        return this;
4357    }
4358
4359    /**
4360     * Convenience for calling {@link #setComponent} with an
4361     * explicit class name.
4362     *
4363     * @param packageContext A Context of the application package implementing
4364     * this class.
4365     * @param className The name of a class inside of the application package
4366     * that will be used as the component for this Intent.
4367     *
4368     * @return Returns the same Intent object, for chaining multiple calls
4369     * into a single statement.
4370     *
4371     * @see #setComponent
4372     * @see #setClass
4373     */
4374    public Intent setClassName(Context packageContext, String className) {
4375        mComponent = new ComponentName(packageContext, className);
4376        return this;
4377    }
4378
4379    /**
4380     * Convenience for calling {@link #setComponent} with an
4381     * explicit application package name and class name.
4382     *
4383     * @param packageName The name of the package implementing the desired
4384     * component.
4385     * @param className The name of a class inside of the application package
4386     * that will be used as the component for this Intent.
4387     *
4388     * @return Returns the same Intent object, for chaining multiple calls
4389     * into a single statement.
4390     *
4391     * @see #setComponent
4392     * @see #setClass
4393     */
4394    public Intent setClassName(String packageName, String className) {
4395        mComponent = new ComponentName(packageName, className);
4396        return this;
4397    }
4398
4399    /**
4400     * Convenience for calling {@link #setComponent(ComponentName)} with the
4401     * name returned by a {@link Class} object.
4402     *
4403     * @param packageContext A Context of the application package implementing
4404     * this class.
4405     * @param cls The class name to set, equivalent to
4406     *            <code>setClassName(context, cls.getName())</code>.
4407     *
4408     * @return Returns the same Intent object, for chaining multiple calls
4409     * into a single statement.
4410     *
4411     * @see #setComponent
4412     */
4413    public Intent setClass(Context packageContext, Class<?> cls) {
4414        mComponent = new ComponentName(packageContext, cls);
4415        return this;
4416    }
4417
4418    /**
4419     * Use with {@link #fillIn} to allow the current action value to be
4420     * overwritten, even if it is already set.
4421     */
4422    public static final int FILL_IN_ACTION = 1<<0;
4423
4424    /**
4425     * Use with {@link #fillIn} to allow the current data or type value
4426     * overwritten, even if it is already set.
4427     */
4428    public static final int FILL_IN_DATA = 1<<1;
4429
4430    /**
4431     * Use with {@link #fillIn} to allow the current categories to be
4432     * overwritten, even if they are already set.
4433     */
4434    public static final int FILL_IN_CATEGORIES = 1<<2;
4435
4436    /**
4437     * Use with {@link #fillIn} to allow the current component value to be
4438     * overwritten, even if it is already set.
4439     */
4440    public static final int FILL_IN_COMPONENT = 1<<3;
4441
4442    /**
4443     * Use with {@link #fillIn} to allow the current package value to be
4444     * overwritten, even if it is already set.
4445     */
4446    public static final int FILL_IN_PACKAGE = 1<<4;
4447
4448    /**
4449     * Copy the contents of <var>other</var> in to this object, but only
4450     * where fields are not defined by this object.  For purposes of a field
4451     * being defined, the following pieces of data in the Intent are
4452     * considered to be separate fields:
4453     *
4454     * <ul>
4455     * <li> action, as set by {@link #setAction}.
4456     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4457     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4458     * <li> categories, as set by {@link #addCategory}.
4459     * <li> package, as set by {@link #setPackage}.
4460     * <li> component, as set by {@link #setComponent(ComponentName)} or
4461     * related methods.
4462     * <li> each top-level name in the associated extras.
4463     * </ul>
4464     *
4465     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4466     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4467     * and {@link #FILL_IN_COMPONENT} to override the restriction where the
4468     * corresponding field will not be replaced if it is already set.
4469     *
4470     * <p>Note: The component field will only be copied if {@link #FILL_IN_COMPONENT} is explicitly
4471     * specified.
4472     *
4473     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4474     * and Intent B with {action="gotit", data-type="some/thing",
4475     * categories="one","two"}.
4476     *
4477     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4478     * containing: {action="gotit", data-type="some/thing",
4479     * categories="bar"}.
4480     *
4481     * @param other Another Intent whose values are to be used to fill in
4482     * the current one.
4483     * @param flags Options to control which fields can be filled in.
4484     *
4485     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4486     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4487     * and {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4488     */
4489    public int fillIn(Intent other, int flags) {
4490        int changes = 0;
4491        if (other.mAction != null
4492                && (mAction == null || (flags&FILL_IN_ACTION) != 0)) {
4493            mAction = other.mAction;
4494            changes |= FILL_IN_ACTION;
4495        }
4496        if ((other.mData != null || other.mType != null)
4497                && ((mData == null && mType == null)
4498                        || (flags&FILL_IN_DATA) != 0)) {
4499            mData = other.mData;
4500            mType = other.mType;
4501            changes |= FILL_IN_DATA;
4502        }
4503        if (other.mCategories != null
4504                && (mCategories == null || (flags&FILL_IN_CATEGORIES) != 0)) {
4505            if (other.mCategories != null) {
4506                mCategories = new HashSet<String>(other.mCategories);
4507            }
4508            changes |= FILL_IN_CATEGORIES;
4509        }
4510        if (other.mPackage != null
4511                && (mPackage == null || (flags&FILL_IN_PACKAGE) != 0)) {
4512            mPackage = other.mPackage;
4513            changes |= FILL_IN_PACKAGE;
4514        }
4515        // Component is special: it can -only- be set if explicitly allowed,
4516        // since otherwise the sender could force the intent somewhere the
4517        // originator didn't intend.
4518        if (other.mComponent != null && (flags&FILL_IN_COMPONENT) != 0) {
4519            mComponent = other.mComponent;
4520            changes |= FILL_IN_COMPONENT;
4521        }
4522        mFlags |= other.mFlags;
4523        if (mExtras == null) {
4524            if (other.mExtras != null) {
4525                mExtras = new Bundle(other.mExtras);
4526            }
4527        } else if (other.mExtras != null) {
4528            try {
4529                Bundle newb = new Bundle(other.mExtras);
4530                newb.putAll(mExtras);
4531                mExtras = newb;
4532            } catch (RuntimeException e) {
4533                // Modifying the extras can cause us to unparcel the contents
4534                // of the bundle, and if we do this in the system process that
4535                // may fail.  We really should handle this (i.e., the Bundle
4536                // impl shouldn't be on top of a plain map), but for now just
4537                // ignore it and keep the original contents. :(
4538                Log.w("Intent", "Failure filling in extras", e);
4539            }
4540        }
4541        return changes;
4542    }
4543
4544    /**
4545     * Wrapper class holding an Intent and implementing comparisons on it for
4546     * the purpose of filtering.  The class implements its
4547     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4548     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4549     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4550     * on the wrapped Intent.
4551     */
4552    public static final class FilterComparison {
4553        private final Intent mIntent;
4554        private final int mHashCode;
4555
4556        public FilterComparison(Intent intent) {
4557            mIntent = intent;
4558            mHashCode = intent.filterHashCode();
4559        }
4560
4561        /**
4562         * Return the Intent that this FilterComparison represents.
4563         * @return Returns the Intent held by the FilterComparison.  Do
4564         * not modify!
4565         */
4566        public Intent getIntent() {
4567            return mIntent;
4568        }
4569
4570        @Override
4571        public boolean equals(Object obj) {
4572            if (obj instanceof FilterComparison) {
4573                Intent other = ((FilterComparison)obj).mIntent;
4574                return mIntent.filterEquals(other);
4575            }
4576            return false;
4577        }
4578
4579        @Override
4580        public int hashCode() {
4581            return mHashCode;
4582        }
4583    }
4584
4585    /**
4586     * Determine if two intents are the same for the purposes of intent
4587     * resolution (filtering). That is, if their action, data, type,
4588     * class, and categories are the same.  This does <em>not</em> compare
4589     * any extra data included in the intents.
4590     *
4591     * @param other The other Intent to compare against.
4592     *
4593     * @return Returns true if action, data, type, class, and categories
4594     *         are the same.
4595     */
4596    public boolean filterEquals(Intent other) {
4597        if (other == null) {
4598            return false;
4599        }
4600        if (mAction != other.mAction) {
4601            if (mAction != null) {
4602                if (!mAction.equals(other.mAction)) {
4603                    return false;
4604                }
4605            } else {
4606                if (!other.mAction.equals(mAction)) {
4607                    return false;
4608                }
4609            }
4610        }
4611        if (mData != other.mData) {
4612            if (mData != null) {
4613                if (!mData.equals(other.mData)) {
4614                    return false;
4615                }
4616            } else {
4617                if (!other.mData.equals(mData)) {
4618                    return false;
4619                }
4620            }
4621        }
4622        if (mType != other.mType) {
4623            if (mType != null) {
4624                if (!mType.equals(other.mType)) {
4625                    return false;
4626                }
4627            } else {
4628                if (!other.mType.equals(mType)) {
4629                    return false;
4630                }
4631            }
4632        }
4633        if (mPackage != other.mPackage) {
4634            if (mPackage != null) {
4635                if (!mPackage.equals(other.mPackage)) {
4636                    return false;
4637                }
4638            } else {
4639                if (!other.mPackage.equals(mPackage)) {
4640                    return false;
4641                }
4642            }
4643        }
4644        if (mComponent != other.mComponent) {
4645            if (mComponent != null) {
4646                if (!mComponent.equals(other.mComponent)) {
4647                    return false;
4648                }
4649            } else {
4650                if (!other.mComponent.equals(mComponent)) {
4651                    return false;
4652                }
4653            }
4654        }
4655        if (mCategories != other.mCategories) {
4656            if (mCategories != null) {
4657                if (!mCategories.equals(other.mCategories)) {
4658                    return false;
4659                }
4660            } else {
4661                if (!other.mCategories.equals(mCategories)) {
4662                    return false;
4663                }
4664            }
4665        }
4666
4667        return true;
4668    }
4669
4670    /**
4671     * Generate hash code that matches semantics of filterEquals().
4672     *
4673     * @return Returns the hash value of the action, data, type, class, and
4674     *         categories.
4675     *
4676     * @see #filterEquals
4677     */
4678    public int filterHashCode() {
4679        int code = 0;
4680        if (mAction != null) {
4681            code += mAction.hashCode();
4682        }
4683        if (mData != null) {
4684            code += mData.hashCode();
4685        }
4686        if (mType != null) {
4687            code += mType.hashCode();
4688        }
4689        if (mPackage != null) {
4690            code += mPackage.hashCode();
4691        }
4692        if (mComponent != null) {
4693            code += mComponent.hashCode();
4694        }
4695        if (mCategories != null) {
4696            code += mCategories.hashCode();
4697        }
4698        return code;
4699    }
4700
4701    @Override
4702    public String toString() {
4703        StringBuilder   b = new StringBuilder(128);
4704
4705        b.append("Intent { ");
4706        toShortString(b, true, true);
4707        b.append(" }");
4708
4709        return b.toString();
4710    }
4711
4712    /** @hide */
4713    public String toShortString(boolean comp, boolean extras) {
4714        StringBuilder   b = new StringBuilder(128);
4715        toShortString(b, comp, extras);
4716        return b.toString();
4717    }
4718
4719    /** @hide */
4720    public void toShortString(StringBuilder b, boolean comp, boolean extras) {
4721        boolean first = true;
4722        if (mAction != null) {
4723            b.append("act=").append(mAction);
4724            first = false;
4725        }
4726        if (mCategories != null) {
4727            if (!first) {
4728                b.append(' ');
4729            }
4730            first = false;
4731            b.append("cat=[");
4732            Iterator<String> i = mCategories.iterator();
4733            boolean didone = false;
4734            while (i.hasNext()) {
4735                if (didone) b.append(",");
4736                didone = true;
4737                b.append(i.next());
4738            }
4739            b.append("]");
4740        }
4741        if (mData != null) {
4742            if (!first) {
4743                b.append(' ');
4744            }
4745            first = false;
4746            b.append("dat=").append(mData);
4747        }
4748        if (mType != null) {
4749            if (!first) {
4750                b.append(' ');
4751            }
4752            first = false;
4753            b.append("typ=").append(mType);
4754        }
4755        if (mFlags != 0) {
4756            if (!first) {
4757                b.append(' ');
4758            }
4759            first = false;
4760            b.append("flg=0x").append(Integer.toHexString(mFlags));
4761        }
4762        if (mPackage != null) {
4763            if (!first) {
4764                b.append(' ');
4765            }
4766            first = false;
4767            b.append("pkg=").append(mPackage);
4768        }
4769        if (comp && mComponent != null) {
4770            if (!first) {
4771                b.append(' ');
4772            }
4773            first = false;
4774            b.append("cmp=").append(mComponent.flattenToShortString());
4775        }
4776        if (extras && mExtras != null) {
4777            if (!first) {
4778                b.append(' ');
4779            }
4780            first = false;
4781            b.append("(has extras)");
4782        }
4783    }
4784
4785    /**
4786     * Call {@link #toUri} with 0 flags.
4787     * @deprecated Use {@link #toUri} instead.
4788     */
4789    @Deprecated
4790    public String toURI() {
4791        return toUri(0);
4792    }
4793
4794    /**
4795     * Convert this Intent into a String holding a URI representation of it.
4796     * The returned URI string has been properly URI encoded, so it can be
4797     * used with {@link Uri#parse Uri.parse(String)}.  The URI contains the
4798     * Intent's data as the base URI, with an additional fragment describing
4799     * the action, categories, type, flags, package, component, and extras.
4800     *
4801     * <p>You can convert the returned string back to an Intent with
4802     * {@link #getIntent}.
4803     *
4804     * @param flags Additional operating flags.  Either 0 or
4805     * {@link #URI_INTENT_SCHEME}.
4806     *
4807     * @return Returns a URI encoding URI string describing the entire contents
4808     * of the Intent.
4809     */
4810    public String toUri(int flags) {
4811        StringBuilder uri = new StringBuilder(128);
4812        String scheme = null;
4813        if (mData != null) {
4814            String data = mData.toString();
4815            if ((flags&URI_INTENT_SCHEME) != 0) {
4816                final int N = data.length();
4817                for (int i=0; i<N; i++) {
4818                    char c = data.charAt(i);
4819                    if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
4820                            || c == '.' || c == '-') {
4821                        continue;
4822                    }
4823                    if (c == ':' && i > 0) {
4824                        // Valid scheme.
4825                        scheme = data.substring(0, i);
4826                        uri.append("intent:");
4827                        data = data.substring(i+1);
4828                        break;
4829                    }
4830
4831                    // No scheme.
4832                    break;
4833                }
4834            }
4835            uri.append(data);
4836
4837        } else if ((flags&URI_INTENT_SCHEME) != 0) {
4838            uri.append("intent:");
4839        }
4840
4841        uri.append("#Intent;");
4842
4843        if (scheme != null) {
4844            uri.append("scheme=").append(scheme).append(';');
4845        }
4846        if (mAction != null) {
4847            uri.append("action=").append(Uri.encode(mAction)).append(';');
4848        }
4849        if (mCategories != null) {
4850            for (String category : mCategories) {
4851                uri.append("category=").append(Uri.encode(category)).append(';');
4852            }
4853        }
4854        if (mType != null) {
4855            uri.append("type=").append(Uri.encode(mType, "/")).append(';');
4856        }
4857        if (mFlags != 0) {
4858            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4859        }
4860        if (mPackage != null) {
4861            uri.append("package=").append(Uri.encode(mPackage)).append(';');
4862        }
4863        if (mComponent != null) {
4864            uri.append("component=").append(Uri.encode(
4865                    mComponent.flattenToShortString(), "/")).append(';');
4866        }
4867        if (mExtras != null) {
4868            for (String key : mExtras.keySet()) {
4869                final Object value = mExtras.get(key);
4870                char entryType =
4871                        value instanceof String    ? 'S' :
4872                        value instanceof Boolean   ? 'B' :
4873                        value instanceof Byte      ? 'b' :
4874                        value instanceof Character ? 'c' :
4875                        value instanceof Double    ? 'd' :
4876                        value instanceof Float     ? 'f' :
4877                        value instanceof Integer   ? 'i' :
4878                        value instanceof Long      ? 'l' :
4879                        value instanceof Short     ? 's' :
4880                        '\0';
4881
4882                if (entryType != '\0') {
4883                    uri.append(entryType);
4884                    uri.append('.');
4885                    uri.append(Uri.encode(key));
4886                    uri.append('=');
4887                    uri.append(Uri.encode(value.toString()));
4888                    uri.append(';');
4889                }
4890            }
4891        }
4892
4893        uri.append("end");
4894
4895        return uri.toString();
4896    }
4897
4898    public int describeContents() {
4899        return (mExtras != null) ? mExtras.describeContents() : 0;
4900    }
4901
4902    public void writeToParcel(Parcel out, int flags) {
4903        out.writeString(mAction);
4904        Uri.writeToParcel(out, mData);
4905        out.writeString(mType);
4906        out.writeInt(mFlags);
4907        out.writeString(mPackage);
4908        ComponentName.writeToParcel(mComponent, out);
4909
4910        if (mCategories != null) {
4911            out.writeInt(mCategories.size());
4912            for (String category : mCategories) {
4913                out.writeString(category);
4914            }
4915        } else {
4916            out.writeInt(0);
4917        }
4918
4919        out.writeBundle(mExtras);
4920    }
4921
4922    public static final Parcelable.Creator<Intent> CREATOR
4923            = new Parcelable.Creator<Intent>() {
4924        public Intent createFromParcel(Parcel in) {
4925            return new Intent(in);
4926        }
4927        public Intent[] newArray(int size) {
4928            return new Intent[size];
4929        }
4930    };
4931
4932    private Intent(Parcel in) {
4933        readFromParcel(in);
4934    }
4935
4936    public void readFromParcel(Parcel in) {
4937        mAction = in.readString();
4938        mData = Uri.CREATOR.createFromParcel(in);
4939        mType = in.readString();
4940        mFlags = in.readInt();
4941        mPackage = in.readString();
4942        mComponent = ComponentName.readFromParcel(in);
4943
4944        int N = in.readInt();
4945        if (N > 0) {
4946            mCategories = new HashSet<String>();
4947            int i;
4948            for (i=0; i<N; i++) {
4949                mCategories.add(in.readString());
4950            }
4951        } else {
4952            mCategories = null;
4953        }
4954
4955        mExtras = in.readBundle();
4956    }
4957
4958    /**
4959     * Parses the "intent" element (and its children) from XML and instantiates
4960     * an Intent object.  The given XML parser should be located at the tag
4961     * where parsing should start (often named "intent"), from which the
4962     * basic action, data, type, and package and class name will be
4963     * retrieved.  The function will then parse in to any child elements,
4964     * looking for <category android:name="xxx"> tags to add categories and
4965     * <extra android:name="xxx" android:value="yyy"> to attach extra data
4966     * to the intent.
4967     *
4968     * @param resources The Resources to use when inflating resources.
4969     * @param parser The XML parser pointing at an "intent" tag.
4970     * @param attrs The AttributeSet interface for retrieving extended
4971     * attribute data at the current <var>parser</var> location.
4972     * @return An Intent object matching the XML data.
4973     * @throws XmlPullParserException If there was an XML parsing error.
4974     * @throws IOException If there was an I/O error.
4975     */
4976    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
4977            throws XmlPullParserException, IOException {
4978        Intent intent = new Intent();
4979
4980        TypedArray sa = resources.obtainAttributes(attrs,
4981                com.android.internal.R.styleable.Intent);
4982
4983        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
4984
4985        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
4986        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
4987        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
4988
4989        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
4990        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
4991        if (packageName != null && className != null) {
4992            intent.setComponent(new ComponentName(packageName, className));
4993        }
4994
4995        sa.recycle();
4996
4997        int outerDepth = parser.getDepth();
4998        int type;
4999        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
5000               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
5001            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
5002                continue;
5003            }
5004
5005            String nodeName = parser.getName();
5006            if (nodeName.equals("category")) {
5007                sa = resources.obtainAttributes(attrs,
5008                        com.android.internal.R.styleable.IntentCategory);
5009                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
5010                sa.recycle();
5011
5012                if (cat != null) {
5013                    intent.addCategory(cat);
5014                }
5015                XmlUtils.skipCurrentTag(parser);
5016
5017            } else if (nodeName.equals("extra")) {
5018                if (intent.mExtras == null) {
5019                    intent.mExtras = new Bundle();
5020                }
5021                resources.parseBundleExtra("extra", attrs, intent.mExtras);
5022                XmlUtils.skipCurrentTag(parser);
5023
5024            } else {
5025                XmlUtils.skipCurrentTag(parser);
5026            }
5027        }
5028
5029        return intent;
5030    }
5031}
5032