Intent.java revision 854060af30f928c0a65591e9c8314ae17056e6b8
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     * <p class="note">This is a protected intent that can only be sent
1207     * by the system.
1208     */
1209    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1210    /**
1211     * Broadcast Action: Trigger the download and eventual installation
1212     * of a package.
1213     * <p>Input: {@link #getData} is the URI of the package file to download.
1214     *
1215     * <p class="note">This is a protected intent that can only be sent
1216     * by the system.
1217     */
1218    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1219    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1220    /**
1221     * Broadcast Action: A new application package has been installed on the
1222     * device. The data contains the name of the package.  Note that the
1223     * newly installed package does <em>not</em> receive this broadcast.
1224     * <p>My include the following extras:
1225     * <ul>
1226     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1227     * <li> {@link #EXTRA_REPLACING} is set to true if this is following
1228     * an {@link #ACTION_PACKAGE_REMOVED} broadcast for the same package.
1229     * </ul>
1230     *
1231     * <p class="note">This is a protected intent that can only be sent
1232     * by the system.
1233     */
1234    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1235    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1236    /**
1237     * Broadcast Action: A new version of an application package has been
1238     * installed, replacing an existing version that was previously installed.
1239     * The data contains the name of the package.
1240     * <p>My include the following extras:
1241     * <ul>
1242     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1243     * </ul>
1244     *
1245     * <p class="note">This is a protected intent that can only be sent
1246     * by the system.
1247     */
1248    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1249    public static final String ACTION_PACKAGE_REPLACED = "android.intent.action.PACKAGE_REPLACED";
1250    /**
1251     * Broadcast Action: An existing application package has been removed from
1252     * the device.  The data contains the name of the package.  The package
1253     * that is being installed does <em>not</em> receive this Intent.
1254     * <ul>
1255     * <li> {@link #EXTRA_UID} containing the integer uid previously assigned
1256     * to the package.
1257     * <li> {@link #EXTRA_DATA_REMOVED} is set to true if the entire
1258     * application -- data and code -- is being removed.
1259     * <li> {@link #EXTRA_REPLACING} is set to true if this will be followed
1260     * by an {@link #ACTION_PACKAGE_ADDED} broadcast for the same package.
1261     * </ul>
1262     *
1263     * <p class="note">This is a protected intent that can only be sent
1264     * by the system.
1265     */
1266    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1267    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1268    /**
1269     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1270     * enabled or disabled.  The data contains the name of the package.
1271     * <ul>
1272     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1273     * </ul>
1274     *
1275     * <p class="note">This is a protected intent that can only be sent
1276     * by the system.
1277     */
1278    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1279    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1280    /**
1281     * Broadcast Action: The user has restarted a package, and all of its
1282     * processes have been killed.  All runtime state
1283     * associated with it (processes, alarms, notifications, etc) should
1284     * be removed.  Note that the restarted package does <em>not</em>
1285     * receive this broadcast.
1286     * The data contains the name of the package.
1287     * <ul>
1288     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1289     * </ul>
1290     *
1291     * <p class="note">This is a protected intent that can only be sent
1292     * by the system.
1293     */
1294    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1295    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1296    /**
1297     * Broadcast Action: The user has cleared the data of a package.  This should
1298     * be preceded by {@link #ACTION_PACKAGE_RESTARTED}, after which all of
1299     * its persistent data is erased and this broadcast sent.
1300     * Note that the cleared package does <em>not</em>
1301     * receive this broadcast. The data contains the name of the package.
1302     * <ul>
1303     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1304     * </ul>
1305     *
1306     * <p class="note">This is a protected intent that can only be sent
1307     * by the system.
1308     */
1309    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1310    public static final String ACTION_PACKAGE_DATA_CLEARED = "android.intent.action.PACKAGE_DATA_CLEARED";
1311    /**
1312     * Broadcast Action: A user ID has been removed from the system.  The user
1313     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1314     *
1315     * <p class="note">This is a protected intent that can only be sent
1316     * by the system.
1317     */
1318    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1319    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1320    /**
1321     * Broadcast Action:  The current system wallpaper has changed.  See
1322     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1323     */
1324    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1325    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1326    /**
1327     * Broadcast Action: The current device {@link android.content.res.Configuration}
1328     * (orientation, locale, etc) has changed.  When such a change happens, the
1329     * UIs (view hierarchy) will need to be rebuilt based on this new
1330     * information; for the most part, applications don't need to worry about
1331     * this, because the system will take care of stopping and restarting the
1332     * application to make sure it sees the new changes.  Some system code that
1333     * can not be restarted will need to watch for this action and handle it
1334     * appropriately.
1335     *
1336     * <p class="note">This is a protected intent that can only be sent
1337     * by the system.
1338     *
1339     * @see android.content.res.Configuration
1340     */
1341    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1342    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1343    /**
1344     * Broadcast Action:  The charging state, or charge level of the battery has
1345     * changed.
1346     *
1347     * <p class="note">
1348     * You can <em>not</em> receive this through components declared
1349     * in manifests, only by explicitly registering for it with
1350     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1351     * Context.registerReceiver()}.
1352     *
1353     * <p class="note">This is a protected intent that can only be sent
1354     * by the system.
1355     */
1356    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1357    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1358    /**
1359     * Broadcast Action:  Indicates low battery condition on the device.
1360     * This broadcast corresponds to the "Low battery warning" system dialog.
1361     *
1362     * <p class="note">This is a protected intent that can only be sent
1363     * by the system.
1364     */
1365    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1366    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1367    /**
1368     * Broadcast Action:  Indicates the battery is now okay after being low.
1369     * This will be sent after {@link #ACTION_BATTERY_LOW} once the battery has
1370     * gone back up to an okay state.
1371     *
1372     * <p class="note">This is a protected intent that can only be sent
1373     * by the system.
1374     */
1375    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1376    public static final String ACTION_BATTERY_OKAY = "android.intent.action.BATTERY_OKAY";
1377    /**
1378     * Broadcast Action:  External power has been connected to the device.
1379     * This is intended for applications that wish to register specifically to this notification.
1380     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1381     * stay active to receive this notification.  This action can be used to implement actions
1382     * that wait until power is available to trigger.
1383     *
1384     * <p class="note">This is a protected intent that can only be sent
1385     * by the system.
1386     */
1387    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1388    public static final String ACTION_POWER_CONNECTED = "android.intent.action.ACTION_POWER_CONNECTED";
1389    /**
1390     * Broadcast Action:  External power has been removed from the device.
1391     * This is intended for applications that wish to register specifically to this notification.
1392     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1393     * stay active to receive this notification.  This action can be used to implement actions
1394     * that wait until power is available to trigger.
1395     *
1396     * <p class="note">This is a protected intent that can only be sent
1397     * by the system.
1398     */
1399    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1400    public static final String ACTION_POWER_DISCONNECTED = "android.intent.action.ACTION_POWER_DISCONNECTED";
1401    /**
1402     * Broadcast Action:  Device is shutting down.
1403     * This is broadcast when the device is being shut down (completely turned
1404     * off, not sleeping).  Once the broadcast is complete, the final shutdown
1405     * will proceed and all unsaved data lost.  Apps will not normally need
1406     * to handle this, since the forground activity will be paused as well.
1407     *
1408     * <p class="note">This is a protected intent that can only be sent
1409     * by the system.
1410     */
1411    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1412    public static final String ACTION_SHUTDOWN = "android.intent.action.ACTION_SHUTDOWN";
1413    /**
1414     * Broadcast Action:  Indicates low memory condition on the device
1415     *
1416     * <p class="note">This is a protected intent that can only be sent
1417     * by the system.
1418     */
1419    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1420    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1421    /**
1422     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1423     *
1424     * <p class="note">This is a protected intent that can only be sent
1425     * by the system.
1426     */
1427    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1428    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1429    /**
1430     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1431     * and package management should be started.
1432     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1433     * notification.
1434     */
1435    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1436    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1437    /**
1438     * Broadcast Action:  The device has entered USB Mass Storage mode.
1439     * This is used mainly for the USB Settings panel.
1440     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1441     * when the SD card file system is mounted or unmounted
1442     */
1443    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1444    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1445
1446    /**
1447     * Broadcast Action:  The device has exited USB Mass Storage mode.
1448     * This is used mainly for the USB Settings panel.
1449     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1450     * when the SD card file system is mounted or unmounted
1451     */
1452    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1453    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1454
1455    /**
1456     * Broadcast Action:  External media has been removed.
1457     * The path to the mount point for the removed media is contained in the Intent.mData field.
1458     */
1459    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1460    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1461
1462    /**
1463     * Broadcast Action:  External media is present, but not mounted at its mount point.
1464     * The path to the mount point for the removed media is contained in the Intent.mData field.
1465     */
1466    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1467    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1468
1469    /**
1470     * Broadcast Action:  External media is present, and being disk-checked
1471     * The path to the mount point for the checking media is contained in the Intent.mData field.
1472     */
1473    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1474    public static final String ACTION_MEDIA_CHECKING = "android.intent.action.MEDIA_CHECKING";
1475
1476    /**
1477     * Broadcast Action:  External media is present, but is using an incompatible fs (or is blank)
1478     * The path to the mount point for the checking media is contained in the Intent.mData field.
1479     */
1480    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1481    public static final String ACTION_MEDIA_NOFS = "android.intent.action.MEDIA_NOFS";
1482
1483    /**
1484     * Broadcast Action:  External media is present and mounted at its mount point.
1485     * The path to the mount point for the removed media is contained in the Intent.mData field.
1486     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1487     * media was mounted read only.
1488     */
1489    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1490    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1491
1492    /**
1493     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1494     * The path to the mount point for the removed media is contained in the Intent.mData field.
1495     */
1496    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1497    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1498
1499    /**
1500     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1501     * The path to the mount point for the removed media is contained in the Intent.mData field.
1502     */
1503    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1504    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1505
1506    /**
1507     * Broadcast Action:  External media is present but cannot be mounted.
1508     * The path to the mount point for the removed media is contained in the Intent.mData field.
1509     */
1510    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1511    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1512
1513   /**
1514     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1515     * Applications should close all files they have open within the mount point when they receive this intent.
1516     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1517     */
1518    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1519    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1520
1521    /**
1522     * Broadcast Action:  The media scanner has started scanning a directory.
1523     * The path to the directory being scanned is contained in the Intent.mData field.
1524     */
1525    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1526    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1527
1528   /**
1529     * Broadcast Action:  The media scanner has finished scanning a directory.
1530     * The path to the scanned directory is contained in the Intent.mData field.
1531     */
1532    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1533    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1534
1535   /**
1536     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1537     * The path to the file is contained in the Intent.mData field.
1538     */
1539    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1540    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1541
1542   /**
1543     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1544     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1545     * caused the broadcast.
1546     */
1547    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1548    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1549
1550    /**
1551     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1552     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1553     * caused the broadcast.
1554     */
1555    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1556    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1557
1558    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1559    // location; they are not general-purpose actions.
1560
1561    /**
1562     * Broadcast Action: An GTalk connection has been established.
1563     */
1564    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1565    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1566            "android.intent.action.GTALK_CONNECTED";
1567
1568    /**
1569     * Broadcast Action: An GTalk connection has been disconnected.
1570     */
1571    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1572    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1573            "android.intent.action.GTALK_DISCONNECTED";
1574
1575    /**
1576     * Broadcast Action: An input method has been changed.
1577     */
1578    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1579    public static final String ACTION_INPUT_METHOD_CHANGED =
1580            "android.intent.action.INPUT_METHOD_CHANGED";
1581
1582    /**
1583     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1584     * more radios have been turned off or on. The intent will have the following extra value:</p>
1585     * <ul>
1586     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1587     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1588     *   turned off</li>
1589     * </ul>
1590     *
1591     * <p class="note">This is a protected intent that can only be sent
1592     * by the system.
1593     */
1594    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1595    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1596
1597    /**
1598     * Broadcast Action: Some content providers have parts of their namespace
1599     * where they publish new events or items that the user may be especially
1600     * interested in. For these things, they may broadcast this action when the
1601     * set of interesting items change.
1602     *
1603     * For example, GmailProvider sends this notification when the set of unread
1604     * mail in the inbox changes.
1605     *
1606     * <p>The data of the intent identifies which part of which provider
1607     * changed. When queried through the content resolver, the data URI will
1608     * return the data set in question.
1609     *
1610     * <p>The intent will have the following extra values:
1611     * <ul>
1612     *   <li><em>count</em> - The number of items in the data set. This is the
1613     *       same as the number of items in the cursor returned by querying the
1614     *       data URI. </li>
1615     * </ul>
1616     *
1617     * This intent will be sent at boot (if the count is non-zero) and when the
1618     * data set changes. It is possible for the data set to change without the
1619     * count changing (for example, if a new unread message arrives in the same
1620     * sync operation in which a message is archived). The phone should still
1621     * ring/vibrate/etc as normal in this case.
1622     */
1623    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1624    public static final String ACTION_PROVIDER_CHANGED =
1625            "android.intent.action.PROVIDER_CHANGED";
1626
1627    /**
1628     * Broadcast Action: Wired Headset plugged in or unplugged.
1629     *
1630     * <p>The intent will have the following extra values:
1631     * <ul>
1632     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1633     *   <li><em>name</em> - Headset type, human readable string </li>
1634     * </ul>
1635     * </ul>
1636     */
1637    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1638    public static final String ACTION_HEADSET_PLUG =
1639            "android.intent.action.HEADSET_PLUG";
1640
1641    /**
1642     * Broadcast Action: An outgoing call is about to be placed.
1643     *
1644     * <p>The Intent will have the following extra value:
1645     * <ul>
1646     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1647     *       the phone number originally intended to be dialed.</li>
1648     * </ul>
1649     * <p>Once the broadcast is finished, the resultData is used as the actual
1650     * number to call.  If  <code>null</code>, no call will be placed.</p>
1651     * <p>It is perfectly acceptable for multiple receivers to process the
1652     * outgoing call in turn: for example, a parental control application
1653     * might verify that the user is authorized to place the call at that
1654     * time, then a number-rewriting application might add an area code if
1655     * one was not specified.</p>
1656     * <p>For consistency, any receiver whose purpose is to prohibit phone
1657     * calls should have a priority of 0, to ensure it will see the final
1658     * phone number to be dialed.
1659     * Any receiver whose purpose is to rewrite phone numbers to be called
1660     * should have a positive priority.
1661     * Negative priorities are reserved for the system for this broadcast;
1662     * using them may cause problems.</p>
1663     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1664     * abort the broadcast.</p>
1665     * <p>Emergency calls cannot be intercepted using this mechanism, and
1666     * other calls cannot be modified to call emergency numbers using this
1667     * mechanism.
1668     * <p>You must hold the
1669     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1670     * permission to receive this Intent.</p>
1671     *
1672     * <p class="note">This is a protected intent that can only be sent
1673     * by the system.
1674     */
1675    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1676    public static final String ACTION_NEW_OUTGOING_CALL =
1677            "android.intent.action.NEW_OUTGOING_CALL";
1678
1679    /**
1680     * Broadcast Action: Have the device reboot.  This is only for use by
1681     * system code.
1682     *
1683     * <p class="note">This is a protected intent that can only be sent
1684     * by the system.
1685     */
1686    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1687    public static final String ACTION_REBOOT =
1688            "android.intent.action.REBOOT";
1689
1690    /**
1691     * @hide
1692     * TODO: This will be unhidden in a later CL.
1693     * Broadcast Action: The TextToSpeech synthesizer has completed processing
1694     * all of the text in the speech queue.
1695     */
1696    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1697    public static final String ACTION_TTS_QUEUE_PROCESSING_COMPLETED =
1698            "android.intent.action.TTS_QUEUE_PROCESSING_COMPLETED";
1699
1700    // ---------------------------------------------------------------------
1701    // ---------------------------------------------------------------------
1702    // Standard intent categories (see addCategory()).
1703
1704    /**
1705     * Set if the activity should be an option for the default action
1706     * (center press) to perform on a piece of data.  Setting this will
1707     * hide from the user any activities without it set when performing an
1708     * action on some data.  Note that this is normal -not- set in the
1709     * Intent when initiating an action -- it is for use in intent filters
1710     * specified in packages.
1711     */
1712    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1713    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1714    /**
1715     * Activities that can be safely invoked from a browser must support this
1716     * category.  For example, if the user is viewing a web page or an e-mail
1717     * and clicks on a link in the text, the Intent generated execute that
1718     * link will require the BROWSABLE category, so that only activities
1719     * supporting this category will be considered as possible actions.  By
1720     * supporting this category, you are promising that there is nothing
1721     * damaging (without user intervention) that can happen by invoking any
1722     * matching Intent.
1723     */
1724    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1725    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1726    /**
1727     * Set if the activity should be considered as an alternative action to
1728     * the data the user is currently viewing.  See also
1729     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1730     * applies to the selection in a list of items.
1731     *
1732     * <p>Supporting this category means that you would like your activity to be
1733     * displayed in the set of alternative things the user can do, usually as
1734     * part of the current activity's options menu.  You will usually want to
1735     * include a specific label in the &lt;intent-filter&gt; of this action
1736     * describing to the user what it does.
1737     *
1738     * <p>The action of IntentFilter with this category is important in that it
1739     * describes the specific action the target will perform.  This generally
1740     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1741     * a specific name such as "com.android.camera.action.CROP.  Only one
1742     * alternative of any particular action will be shown to the user, so using
1743     * a specific action like this makes sure that your alternative will be
1744     * displayed while also allowing other applications to provide their own
1745     * overrides of that particular action.
1746     */
1747    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1748    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1749    /**
1750     * Set if the activity should be considered as an alternative selection
1751     * action to the data the user has currently selected.  This is like
1752     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1753     * of items from which the user can select, giving them alternatives to the
1754     * default action that will be performed on it.
1755     */
1756    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1757    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1758    /**
1759     * Intended to be used as a tab inside of an containing TabActivity.
1760     */
1761    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1762    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1763    /**
1764     * Should be displayed in the top-level launcher.
1765     */
1766    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1767    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1768    /**
1769     * Provides information about the package it is in; typically used if
1770     * a package does not contain a {@link #CATEGORY_LAUNCHER} to provide
1771     * a front-door to the user without having to be shown in the all apps list.
1772     */
1773    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1774    public static final String CATEGORY_INFO = "android.intent.category.INFO";
1775    /**
1776     * This is the home activity, that is the first activity that is displayed
1777     * when the device boots.
1778     */
1779    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1780    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1781    /**
1782     * This activity is a preference panel.
1783     */
1784    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1785    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1786    /**
1787     * This activity is a development preference panel.
1788     */
1789    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1790    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1791    /**
1792     * Capable of running inside a parent activity container.
1793     */
1794    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1795    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1796    /**
1797     * This activity may be exercised by the monkey or other automated test tools.
1798     */
1799    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1800    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1801    /**
1802     * To be used as a test (not part of the normal user experience).
1803     */
1804    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1805    /**
1806     * To be used as a unit test (run through the Test Harness).
1807     */
1808    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1809    /**
1810     * To be used as an sample code example (not part of the normal user
1811     * experience).
1812     */
1813    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1814    /**
1815     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1816     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1817     * when queried, though it is allowable for those columns to be blank.
1818     */
1819    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1820    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1821
1822    /**
1823     * To be used as code under test for framework instrumentation tests.
1824     */
1825    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1826            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1827    // ---------------------------------------------------------------------
1828    // ---------------------------------------------------------------------
1829    // Standard extra data keys.
1830
1831    /**
1832     * The initial data to place in a newly created record.  Use with
1833     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1834     * fields as would be given to the underlying ContentProvider.insert()
1835     * call.
1836     */
1837    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1838
1839    /**
1840     * A constant CharSequence that is associated with the Intent, used with
1841     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1842     * this may be a styled CharSequence, so you must use
1843     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1844     * retrieve it.
1845     */
1846    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1847
1848    /**
1849     * A content: URI holding a stream of data associated with the Intent,
1850     * used with {@link #ACTION_SEND} to supply the data being sent.
1851     */
1852    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1853
1854    /**
1855     * A String[] holding e-mail addresses that should be delivered to.
1856     */
1857    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1858
1859    /**
1860     * A String[] holding e-mail addresses that should be carbon copied.
1861     */
1862    public static final String EXTRA_CC       = "android.intent.extra.CC";
1863
1864    /**
1865     * A String[] holding e-mail addresses that should be blind carbon copied.
1866     */
1867    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1868
1869    /**
1870     * A constant string holding the desired subject line of a message.
1871     */
1872    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1873
1874    /**
1875     * An Intent describing the choices you would like shown with
1876     * {@link #ACTION_PICK_ACTIVITY}.
1877     */
1878    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1879
1880    /**
1881     * A CharSequence dialog title to provide to the user when used with a
1882     * {@link #ACTION_CHOOSER}.
1883     */
1884    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1885
1886    /**
1887     * A {@link android.view.KeyEvent} object containing the event that
1888     * triggered the creation of the Intent it is in.
1889     */
1890    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1891
1892    /**
1893     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1894     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1895     * of restarting the application.
1896     */
1897    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1898
1899    /**
1900     * A String holding the phone number originally entered in
1901     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1902     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1903     */
1904    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1905    /**
1906     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1907     * intents to supply the uid the package had been assigned.  Also an optional
1908     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1909     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1910     * purpose.
1911     */
1912    public static final String EXTRA_UID = "android.intent.extra.UID";
1913
1914    /**
1915     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1916     * intents to indicate whether this represents a full uninstall (removing
1917     * both the code and its data) or a partial uninstall (leaving its data,
1918     * implying that this is an update).
1919     */
1920    public static final String EXTRA_DATA_REMOVED = "android.intent.extra.DATA_REMOVED";
1921
1922    /**
1923     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1924     * intents to indicate that this is a replacement of the package, so this
1925     * broadcast will immediately be followed by an add broadcast for a
1926     * different version of the same package.
1927     */
1928    public static final String EXTRA_REPLACING = "android.intent.extra.REPLACING";
1929
1930    /**
1931     * Used as an int extra field in {@link android.app.AlarmManager} intents
1932     * to tell the application being invoked how many pending alarms are being
1933     * delievered with the intent.  For one-shot alarms this will always be 1.
1934     * For recurring alarms, this might be greater than 1 if the device was
1935     * asleep or powered off at the time an earlier alarm would have been
1936     * delivered.
1937     */
1938    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1939
1940    /**
1941     * Used as a parcelable extra field in {@link #ACTION_APP_ERROR}, containing
1942     * the bug report.
1943     *
1944     * @hide
1945     */
1946    public static final String EXTRA_BUG_REPORT = "android.intent.extra.BUG_REPORT";
1947
1948    /**
1949     * Used as a string extra field when sending an intent to PackageInstaller to install a
1950     * package. Specifies the installer package name; this package will receive the
1951     * {@link #ACTION_APP_ERROR} intent.
1952     *
1953     * @hide
1954     */
1955    public static final String EXTRA_INSTALLER_PACKAGE_NAME
1956            = "android.intent.extra.INSTALLER_PACKAGE_NAME";
1957
1958    // ---------------------------------------------------------------------
1959    // ---------------------------------------------------------------------
1960    // Intent flags (see mFlags variable).
1961
1962    /**
1963     * If set, the recipient of this Intent will be granted permission to
1964     * perform read operations on the Uri in the Intent's data.
1965     */
1966    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
1967    /**
1968     * If set, the recipient of this Intent will be granted permission to
1969     * perform write operations on the Uri in the Intent's data.
1970     */
1971    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
1972    /**
1973     * Can be set by the caller to indicate that this Intent is coming from
1974     * a background operation, not from direct user interaction.
1975     */
1976    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
1977    /**
1978     * A flag you can enable for debugging: when set, log messages will be
1979     * printed during the resolution of this intent to show you what has
1980     * been found to create the final resolved list.
1981     */
1982    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
1983
1984    /**
1985     * If set, the new activity is not kept in the history stack.  As soon as
1986     * the user navigates away from it, the activity is finished.  This may also
1987     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
1988     * noHistory} attribute.
1989     */
1990    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
1991    /**
1992     * If set, the activity will not be launched if it is already running
1993     * at the top of the history stack.
1994     */
1995    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
1996    /**
1997     * If set, this activity will become the start of a new task on this
1998     * history stack.  A task (from the activity that started it to the
1999     * next task activity) defines an atomic group of activities that the
2000     * user can move to.  Tasks can be moved to the foreground and background;
2001     * all of the activities inside of a particular task always remain in
2002     * the same order.  See
2003     * <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2004     * Activities and Tasks</a> for more details on tasks.
2005     *
2006     * <p>This flag is generally used by activities that want
2007     * to present a "launcher" style behavior: they give the user a list of
2008     * separate things that can be done, which otherwise run completely
2009     * independently of the activity launching them.
2010     *
2011     * <p>When using this flag, if a task is already running for the activity
2012     * you are now starting, then a new activity will not be started; instead,
2013     * the current task will simply be brought to the front of the screen with
2014     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
2015     * to disable this behavior.
2016     *
2017     * <p>This flag can not be used when the caller is requesting a result from
2018     * the activity being launched.
2019     */
2020    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
2021    /**
2022     * <strong>Do not use this flag unless you are implementing your own
2023     * top-level application launcher.</strong>  Used in conjunction with
2024     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
2025     * behavior of bringing an existing task to the foreground.  When set,
2026     * a new task is <em>always</em> started to host the Activity for the
2027     * Intent, regardless of whether there is already an existing task running
2028     * the same thing.
2029     *
2030     * <p><strong>Because the default system does not include graphical task management,
2031     * you should not use this flag unless you provide some way for a user to
2032     * return back to the tasks you have launched.</strong>
2033     *
2034     * <p>This flag is ignored if
2035     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
2036     *
2037     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2038     * Activities and Tasks</a> for more details on tasks.
2039     */
2040    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
2041    /**
2042     * If set, and the activity being launched is already running in the
2043     * current task, then instead of launching a new instance of that activity,
2044     * all of the other activities on top of it will be closed and this Intent
2045     * will be delivered to the (now on top) old activity as a new Intent.
2046     *
2047     * <p>For example, consider a task consisting of the activities: A, B, C, D.
2048     * If D calls startActivity() with an Intent that resolves to the component
2049     * of activity B, then C and D will be finished and B receive the given
2050     * Intent, resulting in the stack now being: A, B.
2051     *
2052     * <p>The currently running instance of task B in the above example will
2053     * either receive the new intent you are starting here in its
2054     * onNewIntent() method, or be itself finished and restarted with the
2055     * new intent.  If it has declared its launch mode to be "multiple" (the
2056     * default) it will be finished and re-created; for all other launch modes
2057     * it will receive the Intent in the current instance.
2058     *
2059     * <p>This launch mode can also be used to good effect in conjunction with
2060     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
2061     * of a task, it will bring any currently running instance of that task
2062     * to the foreground, and then clear it to its root state.  This is
2063     * especially useful, for example, when launching an activity from the
2064     * notification manager.
2065     *
2066     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2067     * Activities and Tasks</a> for more details on tasks.
2068     */
2069    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
2070    /**
2071     * If set and this intent is being used to launch a new activity from an
2072     * existing one, then the reply target of the existing activity will be
2073     * transfered to the new activity.  This way the new activity can call
2074     * {@link android.app.Activity#setResult} and have that result sent back to
2075     * the reply target of the original activity.
2076     */
2077    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
2078    /**
2079     * If set and this intent is being used to launch a new activity from an
2080     * existing one, the current activity will not be counted as the top
2081     * activity for deciding whether the new intent should be delivered to
2082     * the top instead of starting a new one.  The previous activity will
2083     * be used as the top, with the assumption being that the current activity
2084     * will finish itself immediately.
2085     */
2086    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
2087    /**
2088     * If set, the new activity is not kept in the list of recently launched
2089     * activities.
2090     */
2091    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
2092    /**
2093     * This flag is not normally set by application code, but set for you by
2094     * the system as described in the
2095     * {@link android.R.styleable#AndroidManifestActivity_launchMode
2096     * launchMode} documentation for the singleTask mode.
2097     */
2098    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
2099    /**
2100     * If set, and this activity is either being started in a new task or
2101     * bringing to the top an existing task, then it will be launched as
2102     * the front door of the task.  This will result in the application of
2103     * any affinities needed to have that task in the proper state (either
2104     * moving activities to or from it), or simply resetting that task to
2105     * its initial state if needed.
2106     */
2107    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
2108    /**
2109     * This flag is not normally set by application code, but set for you by
2110     * the system if this activity is being launched from history
2111     * (longpress home key).
2112     */
2113    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
2114    /**
2115     * If set, this marks a point in the task's activity stack that should
2116     * be cleared when the task is reset.  That is, the next time the task
2117     * is brought to the foreground with
2118     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
2119     * the user re-launching it from home), this activity and all on top of
2120     * it will be finished so that the user does not return to them, but
2121     * instead returns to whatever activity preceeded it.
2122     *
2123     * <p>This is useful for cases where you have a logical break in your
2124     * application.  For example, an e-mail application may have a command
2125     * to view an attachment, which launches an image view activity to
2126     * display it.  This activity should be part of the e-mail application's
2127     * task, since it is a part of the task the user is involved in.  However,
2128     * if the user leaves that task, and later selects the e-mail app from
2129     * home, we may like them to return to the conversation they were
2130     * viewing, not the picture attachment, since that is confusing.  By
2131     * setting this flag when launching the image viewer, that viewer and
2132     * any activities it starts will be removed the next time the user returns
2133     * to mail.
2134     */
2135    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
2136    /**
2137     * If set, this flag will prevent the normal {@link android.app.Activity#onUserLeaveHint}
2138     * callback from occurring on the current frontmost activity before it is
2139     * paused as the newly-started activity is brought to the front.
2140     *
2141     * <p>Typically, an activity can rely on that callback to indicate that an
2142     * explicit user action has caused their activity to be moved out of the
2143     * foreground. The callback marks an appropriate point in the activity's
2144     * lifecycle for it to dismiss any notifications that it intends to display
2145     * "until the user has seen them," such as a blinking LED.
2146     *
2147     * <p>If an activity is ever started via any non-user-driven events such as
2148     * phone-call receipt or an alarm handler, this flag should be passed to {@link
2149     * Context#startActivity Context.startActivity}, ensuring that the pausing
2150     * activity does not think the user has acknowledged its notification.
2151     */
2152    public static final int FLAG_ACTIVITY_NO_USER_ACTION = 0x00040000;
2153    /**
2154     * If set in an Intent passed to {@link Context#startActivity Context.startActivity()},
2155     * this flag will cause the launched activity to be brought to the front of its
2156     * task's history stack if it is already running.
2157     *
2158     * <p>For example, consider a task consisting of four activities: A, B, C, D.
2159     * If D calls startActivity() with an Intent that resolves to the component
2160     * of activity B, then B will be brought to the front of the history stack,
2161     * with this resulting order:  A, C, D, B.
2162     *
2163     * This flag will be ignored if {@link #FLAG_ACTIVITY_CLEAR_TOP} is also
2164     * specified.
2165     */
2166    public static final int FLAG_ACTIVITY_REORDER_TO_FRONT = 0X00020000;
2167    /**
2168     * If set, when sending a broadcast only registered receivers will be
2169     * called -- no BroadcastReceiver components will be launched.
2170     */
2171    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
2172    /**
2173     * If set, when sending a broadcast <i>before boot has completed</i> only
2174     * registered receivers will be called -- no BroadcastReceiver components
2175     * will be launched.  Sticky intent state will be recorded properly even
2176     * if no receivers wind up being called.  If {@link #FLAG_RECEIVER_REGISTERED_ONLY}
2177     * is specified in the broadcast intent, this flag is unnecessary.
2178     *
2179     * <p>This flag is only for use by system sevices as a convenience to
2180     * avoid having to implement a more complex mechanism around detection
2181     * of boot completion.
2182     *
2183     * @hide
2184     */
2185    public static final int FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT = 0x20000000;
2186
2187    // ---------------------------------------------------------------------
2188    // ---------------------------------------------------------------------
2189    // toUri() and parseUri() options.
2190
2191    /**
2192     * Flag for use with {@link #toUri} and {@link #parseUri}: the URI string
2193     * always has the "intent:" scheme.  This syntax can be used when you want
2194     * to later disambiguate between URIs that are intended to describe an
2195     * Intent vs. all others that should be treated as raw URIs.  When used
2196     * with {@link #parseUri}, any other scheme will result in a generic
2197     * VIEW action for that raw URI.
2198     */
2199    public static final int URI_INTENT_SCHEME = 1<<0;
2200
2201    // ---------------------------------------------------------------------
2202
2203    private String mAction;
2204    private Uri mData;
2205    private String mType;
2206    private String mPackage;
2207    private ComponentName mComponent;
2208    private int mFlags;
2209    private HashSet<String> mCategories;
2210    private Bundle mExtras;
2211
2212    // ---------------------------------------------------------------------
2213
2214    /**
2215     * Create an empty intent.
2216     */
2217    public Intent() {
2218    }
2219
2220    /**
2221     * Copy constructor.
2222     */
2223    public Intent(Intent o) {
2224        this.mAction = o.mAction;
2225        this.mData = o.mData;
2226        this.mType = o.mType;
2227        this.mPackage = o.mPackage;
2228        this.mComponent = o.mComponent;
2229        this.mFlags = o.mFlags;
2230        if (o.mCategories != null) {
2231            this.mCategories = new HashSet<String>(o.mCategories);
2232        }
2233        if (o.mExtras != null) {
2234            this.mExtras = new Bundle(o.mExtras);
2235        }
2236    }
2237
2238    @Override
2239    public Object clone() {
2240        return new Intent(this);
2241    }
2242
2243    private Intent(Intent o, boolean all) {
2244        this.mAction = o.mAction;
2245        this.mData = o.mData;
2246        this.mType = o.mType;
2247        this.mPackage = o.mPackage;
2248        this.mComponent = o.mComponent;
2249        if (o.mCategories != null) {
2250            this.mCategories = new HashSet<String>(o.mCategories);
2251        }
2252    }
2253
2254    /**
2255     * Make a clone of only the parts of the Intent that are relevant for
2256     * filter matching: the action, data, type, component, and categories.
2257     */
2258    public Intent cloneFilter() {
2259        return new Intent(this, false);
2260    }
2261
2262    /**
2263     * Create an intent with a given action.  All other fields (data, type,
2264     * class) are null.  Note that the action <em>must</em> be in a
2265     * namespace because Intents are used globally in the system -- for
2266     * example the system VIEW action is android.intent.action.VIEW; an
2267     * application's custom action would be something like
2268     * com.google.app.myapp.CUSTOM_ACTION.
2269     *
2270     * @param action The Intent action, such as ACTION_VIEW.
2271     */
2272    public Intent(String action) {
2273        mAction = action;
2274    }
2275
2276    /**
2277     * Create an intent with a given action and for a given data url.  Note
2278     * that the action <em>must</em> be in a namespace because Intents are
2279     * used globally in the system -- for example the system VIEW action is
2280     * android.intent.action.VIEW; an application's custom action would be
2281     * something like com.google.app.myapp.CUSTOM_ACTION.
2282     *
2283     * <p><em>Note: scheme and host name matching in the Android framework is
2284     * case-sensitive, unlike the formal RFC.  As a result,
2285     * you should always ensure that you write your Uri with these elements
2286     * using lower case letters, and normalize any Uris you receive from
2287     * outside of Android to ensure the scheme and host is lower case.</em></p>
2288     *
2289     * @param action The Intent action, such as ACTION_VIEW.
2290     * @param uri The Intent data URI.
2291     */
2292    public Intent(String action, Uri uri) {
2293        mAction = action;
2294        mData = uri;
2295    }
2296
2297    /**
2298     * Create an intent for a specific component.  All other fields (action, data,
2299     * type, class) are null, though they can be modified later with explicit
2300     * calls.  This provides a convenient way to create an intent that is
2301     * intended to execute a hard-coded class name, rather than relying on the
2302     * system to find an appropriate class for you; see {@link #setComponent}
2303     * for more information on the repercussions of this.
2304     *
2305     * @param packageContext A Context of the application package implementing
2306     * this class.
2307     * @param cls The component class that is to be used for the intent.
2308     *
2309     * @see #setClass
2310     * @see #setComponent
2311     * @see #Intent(String, android.net.Uri , Context, Class)
2312     */
2313    public Intent(Context packageContext, Class<?> cls) {
2314        mComponent = new ComponentName(packageContext, cls);
2315    }
2316
2317    /**
2318     * Create an intent for a specific component with a specified action and data.
2319     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
2320     * construct the Intent and then calling {@link #setClass} to set its
2321     * class.
2322     *
2323     * <p><em>Note: scheme and host name matching in the Android framework is
2324     * case-sensitive, unlike the formal RFC.  As a result,
2325     * you should always ensure that you write your Uri with these elements
2326     * using lower case letters, and normalize any Uris you receive from
2327     * outside of Android to ensure the scheme and host is lower case.</em></p>
2328     *
2329     * @param action The Intent action, such as ACTION_VIEW.
2330     * @param uri The Intent data URI.
2331     * @param packageContext A Context of the application package implementing
2332     * this class.
2333     * @param cls The component class that is to be used for the intent.
2334     *
2335     * @see #Intent(String, android.net.Uri)
2336     * @see #Intent(Context, Class)
2337     * @see #setClass
2338     * @see #setComponent
2339     */
2340    public Intent(String action, Uri uri,
2341            Context packageContext, Class<?> cls) {
2342        mAction = action;
2343        mData = uri;
2344        mComponent = new ComponentName(packageContext, cls);
2345    }
2346
2347    /**
2348     * Call {@link #parseUri} with 0 flags.
2349     * @deprecated Use {@link #parseUri} instead.
2350     */
2351    @Deprecated
2352    public static Intent getIntent(String uri) throws URISyntaxException {
2353        return parseUri(uri, 0);
2354    }
2355
2356    /**
2357     * Create an intent from a URI.  This URI may encode the action,
2358     * category, and other intent fields, if it was returned by
2359     * {@link #toUri}..  If the Intent was not generate by toUri(), its data
2360     * will be the entire URI and its action will be ACTION_VIEW.
2361     *
2362     * <p>The URI given here must not be relative -- that is, it must include
2363     * the scheme and full path.
2364     *
2365     * @param uri The URI to turn into an Intent.
2366     * @param flags Additional processing flags.  Either 0 or
2367     *
2368     * @return Intent The newly created Intent object.
2369     *
2370     * @throws URISyntaxException Throws URISyntaxError if the basic URI syntax
2371     * it bad (as parsed by the Uri class) or the Intent data within the
2372     * URI is invalid.
2373     *
2374     * @see #toUri
2375     */
2376    public static Intent parseUri(String uri, int flags) throws URISyntaxException {
2377        int i = 0;
2378        try {
2379            // Validate intent scheme for if requested.
2380            if ((flags&URI_INTENT_SCHEME) != 0) {
2381                if (!uri.startsWith("intent:")) {
2382                    Intent intent = new Intent(ACTION_VIEW);
2383                    try {
2384                        intent.setData(Uri.parse(uri));
2385                    } catch (IllegalArgumentException e) {
2386                        throw new URISyntaxException(uri, e.getMessage());
2387                    }
2388                    return intent;
2389                }
2390            }
2391
2392            // simple case
2393            i = uri.lastIndexOf("#");
2394            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2395
2396            // old format Intent URI
2397            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2398
2399            // new format
2400            Intent intent = new Intent(ACTION_VIEW);
2401
2402            // fetch data part, if present
2403            String data = i >= 0 ? uri.substring(0, i) : null;
2404            String scheme = null;
2405            i += "#Intent;".length();
2406
2407            // loop over contents of Intent, all name=value;
2408            while (!uri.startsWith("end", i)) {
2409                int eq = uri.indexOf('=', i);
2410                int semi = uri.indexOf(';', eq);
2411                String value = Uri.decode(uri.substring(eq + 1, semi));
2412
2413                // action
2414                if (uri.startsWith("action=", i)) {
2415                    intent.mAction = value;
2416                }
2417
2418                // categories
2419                else if (uri.startsWith("category=", i)) {
2420                    intent.addCategory(value);
2421                }
2422
2423                // type
2424                else if (uri.startsWith("type=", i)) {
2425                    intent.mType = value;
2426                }
2427
2428                // launch  flags
2429                else if (uri.startsWith("launchFlags=", i)) {
2430                    intent.mFlags = Integer.decode(value).intValue();
2431                }
2432
2433                // package
2434                else if (uri.startsWith("package=", i)) {
2435                    intent.mPackage = value;
2436                }
2437
2438                // component
2439                else if (uri.startsWith("component=", i)) {
2440                    intent.mComponent = ComponentName.unflattenFromString(value);
2441                }
2442
2443                // scheme
2444                else if (uri.startsWith("scheme=", i)) {
2445                    scheme = value;
2446                }
2447
2448                // extra
2449                else {
2450                    String key = Uri.decode(uri.substring(i + 2, eq));
2451                    // create Bundle if it doesn't already exist
2452                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2453                    Bundle b = intent.mExtras;
2454                    // add EXTRA
2455                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2456                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2457                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2458                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2459                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2460                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2461                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2462                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2463                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2464                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2465                }
2466
2467                // move to the next item
2468                i = semi + 1;
2469            }
2470
2471            if (data != null) {
2472                if (data.startsWith("intent:")) {
2473                    data = data.substring(7);
2474                    if (scheme != null) {
2475                        data = scheme + ':' + data;
2476                    }
2477                }
2478
2479                if (data.length() > 0) {
2480                    try {
2481                        intent.mData = Uri.parse(data);
2482                    } catch (IllegalArgumentException e) {
2483                        throw new URISyntaxException(uri, e.getMessage());
2484                    }
2485                }
2486            }
2487
2488            return intent;
2489
2490        } catch (IndexOutOfBoundsException e) {
2491            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2492        }
2493    }
2494
2495    public static Intent getIntentOld(String uri) throws URISyntaxException {
2496        Intent intent;
2497
2498        int i = uri.lastIndexOf('#');
2499        if (i >= 0) {
2500            Uri data = null;
2501            String action = null;
2502            if (i > 0) {
2503                data = Uri.parse(uri.substring(0, i));
2504            }
2505
2506            i++;
2507
2508            if (uri.regionMatches(i, "action(", 0, 7)) {
2509                i += 7;
2510                int j = uri.indexOf(')', i);
2511                action = uri.substring(i, j);
2512                i = j + 1;
2513            }
2514
2515            intent = new Intent(action, data);
2516
2517            if (uri.regionMatches(i, "categories(", 0, 11)) {
2518                i += 11;
2519                int j = uri.indexOf(')', i);
2520                while (i < j) {
2521                    int sep = uri.indexOf('!', i);
2522                    if (sep < 0) sep = j;
2523                    if (i < sep) {
2524                        intent.addCategory(uri.substring(i, sep));
2525                    }
2526                    i = sep + 1;
2527                }
2528                i = j + 1;
2529            }
2530
2531            if (uri.regionMatches(i, "type(", 0, 5)) {
2532                i += 5;
2533                int j = uri.indexOf(')', i);
2534                intent.mType = uri.substring(i, j);
2535                i = j + 1;
2536            }
2537
2538            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2539                i += 12;
2540                int j = uri.indexOf(')', i);
2541                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2542                i = j + 1;
2543            }
2544
2545            if (uri.regionMatches(i, "component(", 0, 10)) {
2546                i += 10;
2547                int j = uri.indexOf(')', i);
2548                int sep = uri.indexOf('!', i);
2549                if (sep >= 0 && sep < j) {
2550                    String pkg = uri.substring(i, sep);
2551                    String cls = uri.substring(sep + 1, j);
2552                    intent.mComponent = new ComponentName(pkg, cls);
2553                }
2554                i = j + 1;
2555            }
2556
2557            if (uri.regionMatches(i, "extras(", 0, 7)) {
2558                i += 7;
2559
2560                final int closeParen = uri.indexOf(')', i);
2561                if (closeParen == -1) throw new URISyntaxException(uri,
2562                        "EXTRA missing trailing ')'", i);
2563
2564                while (i < closeParen) {
2565                    // fetch the key value
2566                    int j = uri.indexOf('=', i);
2567                    if (j <= i + 1 || i >= closeParen) {
2568                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2569                    }
2570                    char type = uri.charAt(i);
2571                    i++;
2572                    String key = uri.substring(i, j);
2573                    i = j + 1;
2574
2575                    // get type-value
2576                    j = uri.indexOf('!', i);
2577                    if (j == -1 || j >= closeParen) j = closeParen;
2578                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2579                    String value = uri.substring(i, j);
2580                    i = j;
2581
2582                    // create Bundle if it doesn't already exist
2583                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2584
2585                    // add item to bundle
2586                    try {
2587                        switch (type) {
2588                            case 'S':
2589                                intent.mExtras.putString(key, Uri.decode(value));
2590                                break;
2591                            case 'B':
2592                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2593                                break;
2594                            case 'b':
2595                                intent.mExtras.putByte(key, Byte.parseByte(value));
2596                                break;
2597                            case 'c':
2598                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2599                                break;
2600                            case 'd':
2601                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2602                                break;
2603                            case 'f':
2604                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2605                                break;
2606                            case 'i':
2607                                intent.mExtras.putInt(key, Integer.parseInt(value));
2608                                break;
2609                            case 'l':
2610                                intent.mExtras.putLong(key, Long.parseLong(value));
2611                                break;
2612                            case 's':
2613                                intent.mExtras.putShort(key, Short.parseShort(value));
2614                                break;
2615                            default:
2616                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2617                        }
2618                    } catch (NumberFormatException e) {
2619                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2620                    }
2621
2622                    char ch = uri.charAt(i);
2623                    if (ch == ')') break;
2624                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2625                    i++;
2626                }
2627            }
2628
2629            if (intent.mAction == null) {
2630                // By default, if no action is specified, then use VIEW.
2631                intent.mAction = ACTION_VIEW;
2632            }
2633
2634        } else {
2635            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2636        }
2637
2638        return intent;
2639    }
2640
2641    /**
2642     * Retrieve the general action to be performed, such as
2643     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2644     * the information in the intent should be interpreted -- most importantly,
2645     * what to do with the data returned by {@link #getData}.
2646     *
2647     * @return The action of this intent or null if none is specified.
2648     *
2649     * @see #setAction
2650     */
2651    public String getAction() {
2652        return mAction;
2653    }
2654
2655    /**
2656     * Retrieve data this intent is operating on.  This URI specifies the name
2657     * of the data; often it uses the content: scheme, specifying data in a
2658     * content provider.  Other schemes may be handled by specific activities,
2659     * such as http: by the web browser.
2660     *
2661     * @return The URI of the data this intent is targeting or null.
2662     *
2663     * @see #getScheme
2664     * @see #setData
2665     */
2666    public Uri getData() {
2667        return mData;
2668    }
2669
2670    /**
2671     * The same as {@link #getData()}, but returns the URI as an encoded
2672     * String.
2673     */
2674    public String getDataString() {
2675        return mData != null ? mData.toString() : null;
2676    }
2677
2678    /**
2679     * Return the scheme portion of the intent's data.  If the data is null or
2680     * does not include a scheme, null is returned.  Otherwise, the scheme
2681     * prefix without the final ':' is returned, i.e. "http".
2682     *
2683     * <p>This is the same as calling getData().getScheme() (and checking for
2684     * null data).
2685     *
2686     * @return The scheme of this intent.
2687     *
2688     * @see #getData
2689     */
2690    public String getScheme() {
2691        return mData != null ? mData.getScheme() : null;
2692    }
2693
2694    /**
2695     * Retrieve any explicit MIME type included in the intent.  This is usually
2696     * null, as the type is determined by the intent data.
2697     *
2698     * @return If a type was manually set, it is returned; else null is
2699     *         returned.
2700     *
2701     * @see #resolveType(ContentResolver)
2702     * @see #setType
2703     */
2704    public String getType() {
2705        return mType;
2706    }
2707
2708    /**
2709     * Return the MIME data type of this intent.  If the type field is
2710     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2711     * the type of that data is returned.  If neither fields are set, a null is
2712     * returned.
2713     *
2714     * @return The MIME type of this intent.
2715     *
2716     * @see #getType
2717     * @see #resolveType(ContentResolver)
2718     */
2719    public String resolveType(Context context) {
2720        return resolveType(context.getContentResolver());
2721    }
2722
2723    /**
2724     * Return the MIME data type of this intent.  If the type field is
2725     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2726     * the type of that data is returned.  If neither fields are set, a null is
2727     * returned.
2728     *
2729     * @param resolver A ContentResolver that can be used to determine the MIME
2730     *                 type of the intent's data.
2731     *
2732     * @return The MIME type of this intent.
2733     *
2734     * @see #getType
2735     * @see #resolveType(Context)
2736     */
2737    public String resolveType(ContentResolver resolver) {
2738        if (mType != null) {
2739            return mType;
2740        }
2741        if (mData != null) {
2742            if ("content".equals(mData.getScheme())) {
2743                return resolver.getType(mData);
2744            }
2745        }
2746        return null;
2747    }
2748
2749    /**
2750     * Return the MIME data type of this intent, only if it will be needed for
2751     * intent resolution.  This is not generally useful for application code;
2752     * it is used by the frameworks for communicating with back-end system
2753     * services.
2754     *
2755     * @param resolver A ContentResolver that can be used to determine the MIME
2756     *                 type of the intent's data.
2757     *
2758     * @return The MIME type of this intent, or null if it is unknown or not
2759     *         needed.
2760     */
2761    public String resolveTypeIfNeeded(ContentResolver resolver) {
2762        if (mComponent != null) {
2763            return mType;
2764        }
2765        return resolveType(resolver);
2766    }
2767
2768    /**
2769     * Check if an category exists in the intent.
2770     *
2771     * @param category The category to check.
2772     *
2773     * @return boolean True if the intent contains the category, else false.
2774     *
2775     * @see #getCategories
2776     * @see #addCategory
2777     */
2778    public boolean hasCategory(String category) {
2779        return mCategories != null && mCategories.contains(category);
2780    }
2781
2782    /**
2783     * Return the set of all categories in the intent.  If there are no categories,
2784     * returns NULL.
2785     *
2786     * @return Set The set of categories you can examine.  Do not modify!
2787     *
2788     * @see #hasCategory
2789     * @see #addCategory
2790     */
2791    public Set<String> getCategories() {
2792        return mCategories;
2793    }
2794
2795    /**
2796     * Sets the ClassLoader that will be used when unmarshalling
2797     * any Parcelable values from the extras of this Intent.
2798     *
2799     * @param loader a ClassLoader, or null to use the default loader
2800     * at the time of unmarshalling.
2801     */
2802    public void setExtrasClassLoader(ClassLoader loader) {
2803        if (mExtras != null) {
2804            mExtras.setClassLoader(loader);
2805        }
2806    }
2807
2808    /**
2809     * Returns true if an extra value is associated with the given name.
2810     * @param name the extra's name
2811     * @return true if the given extra is present.
2812     */
2813    public boolean hasExtra(String name) {
2814        return mExtras != null && mExtras.containsKey(name);
2815    }
2816
2817    /**
2818     * Returns true if the Intent's extras contain a parcelled file descriptor.
2819     * @return true if the Intent contains a parcelled file descriptor.
2820     */
2821    public boolean hasFileDescriptors() {
2822        return mExtras != null && mExtras.hasFileDescriptors();
2823    }
2824
2825    /**
2826     * Retrieve extended data from the intent.
2827     *
2828     * @param name The name of the desired item.
2829     *
2830     * @return the value of an item that previously added with putExtra()
2831     * or null if none was found.
2832     *
2833     * @deprecated
2834     * @hide
2835     */
2836    @Deprecated
2837    public Object getExtra(String name) {
2838        return getExtra(name, null);
2839    }
2840
2841    /**
2842     * Retrieve extended data from the intent.
2843     *
2844     * @param name The name of the desired item.
2845     * @param defaultValue the value to be returned if no value of the desired
2846     * type is stored with the given name.
2847     *
2848     * @return the value of an item that previously added with putExtra()
2849     * or the default value if none was found.
2850     *
2851     * @see #putExtra(String, boolean)
2852     */
2853    public boolean getBooleanExtra(String name, boolean defaultValue) {
2854        return mExtras == null ? defaultValue :
2855            mExtras.getBoolean(name, defaultValue);
2856    }
2857
2858    /**
2859     * Retrieve extended data from the intent.
2860     *
2861     * @param name The name of the desired item.
2862     * @param defaultValue the value to be returned if no value of the desired
2863     * type is stored with the given name.
2864     *
2865     * @return the value of an item that previously added with putExtra()
2866     * or the default value if none was found.
2867     *
2868     * @see #putExtra(String, byte)
2869     */
2870    public byte getByteExtra(String name, byte defaultValue) {
2871        return mExtras == null ? defaultValue :
2872            mExtras.getByte(name, defaultValue);
2873    }
2874
2875    /**
2876     * Retrieve extended data from the intent.
2877     *
2878     * @param name The name of the desired item.
2879     * @param defaultValue the value to be returned if no value of the desired
2880     * type is stored with the given name.
2881     *
2882     * @return the value of an item that previously added with putExtra()
2883     * or the default value if none was found.
2884     *
2885     * @see #putExtra(String, short)
2886     */
2887    public short getShortExtra(String name, short defaultValue) {
2888        return mExtras == null ? defaultValue :
2889            mExtras.getShort(name, defaultValue);
2890    }
2891
2892    /**
2893     * Retrieve extended data from the intent.
2894     *
2895     * @param name The name of the desired item.
2896     * @param defaultValue the value to be returned if no value of the desired
2897     * type is stored with the given name.
2898     *
2899     * @return the value of an item that previously added with putExtra()
2900     * or the default value if none was found.
2901     *
2902     * @see #putExtra(String, char)
2903     */
2904    public char getCharExtra(String name, char defaultValue) {
2905        return mExtras == null ? defaultValue :
2906            mExtras.getChar(name, defaultValue);
2907    }
2908
2909    /**
2910     * Retrieve extended data from the intent.
2911     *
2912     * @param name The name of the desired item.
2913     * @param defaultValue the value to be returned if no value of the desired
2914     * type is stored with the given name.
2915     *
2916     * @return the value of an item that previously added with putExtra()
2917     * or the default value if none was found.
2918     *
2919     * @see #putExtra(String, int)
2920     */
2921    public int getIntExtra(String name, int defaultValue) {
2922        return mExtras == null ? defaultValue :
2923            mExtras.getInt(name, defaultValue);
2924    }
2925
2926    /**
2927     * Retrieve extended data from the intent.
2928     *
2929     * @param name The name of the desired item.
2930     * @param defaultValue the value to be returned if no value of the desired
2931     * type is stored with the given name.
2932     *
2933     * @return the value of an item that previously added with putExtra()
2934     * or the default value if none was found.
2935     *
2936     * @see #putExtra(String, long)
2937     */
2938    public long getLongExtra(String name, long defaultValue) {
2939        return mExtras == null ? defaultValue :
2940            mExtras.getLong(name, defaultValue);
2941    }
2942
2943    /**
2944     * Retrieve extended data from the intent.
2945     *
2946     * @param name The name of the desired item.
2947     * @param defaultValue the value to be returned if no value of the desired
2948     * type is stored with the given name.
2949     *
2950     * @return the value of an item that previously added with putExtra(),
2951     * or the default value if no such item is present
2952     *
2953     * @see #putExtra(String, float)
2954     */
2955    public float getFloatExtra(String name, float defaultValue) {
2956        return mExtras == null ? defaultValue :
2957            mExtras.getFloat(name, defaultValue);
2958    }
2959
2960    /**
2961     * Retrieve extended data from the intent.
2962     *
2963     * @param name The name of the desired item.
2964     * @param defaultValue the value to be returned if no value of the desired
2965     * type is stored with the given name.
2966     *
2967     * @return the value of an item that previously added with putExtra()
2968     * or the default value if none was found.
2969     *
2970     * @see #putExtra(String, double)
2971     */
2972    public double getDoubleExtra(String name, double defaultValue) {
2973        return mExtras == null ? defaultValue :
2974            mExtras.getDouble(name, defaultValue);
2975    }
2976
2977    /**
2978     * Retrieve extended data from the intent.
2979     *
2980     * @param name The name of the desired item.
2981     *
2982     * @return the value of an item that previously added with putExtra()
2983     * or null if no String value was found.
2984     *
2985     * @see #putExtra(String, String)
2986     */
2987    public String getStringExtra(String name) {
2988        return mExtras == null ? null : mExtras.getString(name);
2989    }
2990
2991    /**
2992     * Retrieve extended data from the intent.
2993     *
2994     * @param name The name of the desired item.
2995     *
2996     * @return the value of an item that previously added with putExtra()
2997     * or null if no CharSequence value was found.
2998     *
2999     * @see #putExtra(String, CharSequence)
3000     */
3001    public CharSequence getCharSequenceExtra(String name) {
3002        return mExtras == null ? null : mExtras.getCharSequence(name);
3003    }
3004
3005    /**
3006     * Retrieve extended data from the intent.
3007     *
3008     * @param name The name of the desired item.
3009     *
3010     * @return the value of an item that previously added with putExtra()
3011     * or null if no Parcelable value was found.
3012     *
3013     * @see #putExtra(String, Parcelable)
3014     */
3015    public <T extends Parcelable> T getParcelableExtra(String name) {
3016        return mExtras == null ? null : mExtras.<T>getParcelable(name);
3017    }
3018
3019    /**
3020     * Retrieve extended data from the intent.
3021     *
3022     * @param name The name of the desired item.
3023     *
3024     * @return the value of an item that previously added with putExtra()
3025     * or null if no Parcelable[] value was found.
3026     *
3027     * @see #putExtra(String, Parcelable[])
3028     */
3029    public Parcelable[] getParcelableArrayExtra(String name) {
3030        return mExtras == null ? null : mExtras.getParcelableArray(name);
3031    }
3032
3033    /**
3034     * Retrieve extended data from the intent.
3035     *
3036     * @param name The name of the desired item.
3037     *
3038     * @return the value of an item that previously added with putExtra()
3039     * or null if no ArrayList<Parcelable> value was found.
3040     *
3041     * @see #putParcelableArrayListExtra(String, ArrayList)
3042     */
3043    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
3044        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
3045    }
3046
3047    /**
3048     * Retrieve extended data from the intent.
3049     *
3050     * @param name The name of the desired item.
3051     *
3052     * @return the value of an item that previously added with putExtra()
3053     * or null if no Serializable value was found.
3054     *
3055     * @see #putExtra(String, Serializable)
3056     */
3057    public Serializable getSerializableExtra(String name) {
3058        return mExtras == null ? null : mExtras.getSerializable(name);
3059    }
3060
3061    /**
3062     * Retrieve extended data from the intent.
3063     *
3064     * @param name The name of the desired item.
3065     *
3066     * @return the value of an item that previously added with putExtra()
3067     * or null if no ArrayList<Integer> value was found.
3068     *
3069     * @see #putIntegerArrayListExtra(String, ArrayList)
3070     */
3071    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
3072        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
3073    }
3074
3075    /**
3076     * Retrieve extended data from the intent.
3077     *
3078     * @param name The name of the desired item.
3079     *
3080     * @return the value of an item that previously added with putExtra()
3081     * or null if no ArrayList<String> value was found.
3082     *
3083     * @see #putStringArrayListExtra(String, ArrayList)
3084     */
3085    public ArrayList<String> getStringArrayListExtra(String name) {
3086        return mExtras == null ? null : mExtras.getStringArrayList(name);
3087    }
3088
3089    /**
3090     * Retrieve extended data from the intent.
3091     *
3092     * @param name The name of the desired item.
3093     *
3094     * @return the value of an item that previously added with putExtra()
3095     * or null if no boolean array value was found.
3096     *
3097     * @see #putExtra(String, boolean[])
3098     */
3099    public boolean[] getBooleanArrayExtra(String name) {
3100        return mExtras == null ? null : mExtras.getBooleanArray(name);
3101    }
3102
3103    /**
3104     * Retrieve extended data from the intent.
3105     *
3106     * @param name The name of the desired item.
3107     *
3108     * @return the value of an item that previously added with putExtra()
3109     * or null if no byte array value was found.
3110     *
3111     * @see #putExtra(String, byte[])
3112     */
3113    public byte[] getByteArrayExtra(String name) {
3114        return mExtras == null ? null : mExtras.getByteArray(name);
3115    }
3116
3117    /**
3118     * Retrieve extended data from the intent.
3119     *
3120     * @param name The name of the desired item.
3121     *
3122     * @return the value of an item that previously added with putExtra()
3123     * or null if no short array value was found.
3124     *
3125     * @see #putExtra(String, short[])
3126     */
3127    public short[] getShortArrayExtra(String name) {
3128        return mExtras == null ? null : mExtras.getShortArray(name);
3129    }
3130
3131    /**
3132     * Retrieve extended data from the intent.
3133     *
3134     * @param name The name of the desired item.
3135     *
3136     * @return the value of an item that previously added with putExtra()
3137     * or null if no char array value was found.
3138     *
3139     * @see #putExtra(String, char[])
3140     */
3141    public char[] getCharArrayExtra(String name) {
3142        return mExtras == null ? null : mExtras.getCharArray(name);
3143    }
3144
3145    /**
3146     * Retrieve extended data from the intent.
3147     *
3148     * @param name The name of the desired item.
3149     *
3150     * @return the value of an item that previously added with putExtra()
3151     * or null if no int array value was found.
3152     *
3153     * @see #putExtra(String, int[])
3154     */
3155    public int[] getIntArrayExtra(String name) {
3156        return mExtras == null ? null : mExtras.getIntArray(name);
3157    }
3158
3159    /**
3160     * Retrieve extended data from the intent.
3161     *
3162     * @param name The name of the desired item.
3163     *
3164     * @return the value of an item that previously added with putExtra()
3165     * or null if no long array value was found.
3166     *
3167     * @see #putExtra(String, long[])
3168     */
3169    public long[] getLongArrayExtra(String name) {
3170        return mExtras == null ? null : mExtras.getLongArray(name);
3171    }
3172
3173    /**
3174     * Retrieve extended data from the intent.
3175     *
3176     * @param name The name of the desired item.
3177     *
3178     * @return the value of an item that previously added with putExtra()
3179     * or null if no float array value was found.
3180     *
3181     * @see #putExtra(String, float[])
3182     */
3183    public float[] getFloatArrayExtra(String name) {
3184        return mExtras == null ? null : mExtras.getFloatArray(name);
3185    }
3186
3187    /**
3188     * Retrieve extended data from the intent.
3189     *
3190     * @param name The name of the desired item.
3191     *
3192     * @return the value of an item that previously added with putExtra()
3193     * or null if no double array value was found.
3194     *
3195     * @see #putExtra(String, double[])
3196     */
3197    public double[] getDoubleArrayExtra(String name) {
3198        return mExtras == null ? null : mExtras.getDoubleArray(name);
3199    }
3200
3201    /**
3202     * Retrieve extended data from the intent.
3203     *
3204     * @param name The name of the desired item.
3205     *
3206     * @return the value of an item that previously added with putExtra()
3207     * or null if no String array value was found.
3208     *
3209     * @see #putExtra(String, String[])
3210     */
3211    public String[] getStringArrayExtra(String name) {
3212        return mExtras == null ? null : mExtras.getStringArray(name);
3213    }
3214
3215    /**
3216     * Retrieve extended data from the intent.
3217     *
3218     * @param name The name of the desired item.
3219     *
3220     * @return the value of an item that previously added with putExtra()
3221     * or null if no Bundle value was found.
3222     *
3223     * @see #putExtra(String, Bundle)
3224     */
3225    public Bundle getBundleExtra(String name) {
3226        return mExtras == null ? null : mExtras.getBundle(name);
3227    }
3228
3229    /**
3230     * Retrieve extended data from the intent.
3231     *
3232     * @param name The name of the desired item.
3233     *
3234     * @return the value of an item that previously added with putExtra()
3235     * or null if no IBinder value was found.
3236     *
3237     * @see #putExtra(String, IBinder)
3238     *
3239     * @deprecated
3240     * @hide
3241     */
3242    @Deprecated
3243    public IBinder getIBinderExtra(String name) {
3244        return mExtras == null ? null : mExtras.getIBinder(name);
3245    }
3246
3247    /**
3248     * Retrieve extended data from the intent.
3249     *
3250     * @param name The name of the desired item.
3251     * @param defaultValue The default value to return in case no item is
3252     * associated with the key 'name'
3253     *
3254     * @return the value of an item that previously added with putExtra()
3255     * or defaultValue if none was found.
3256     *
3257     * @see #putExtra
3258     *
3259     * @deprecated
3260     * @hide
3261     */
3262    @Deprecated
3263    public Object getExtra(String name, Object defaultValue) {
3264        Object result = defaultValue;
3265        if (mExtras != null) {
3266            Object result2 = mExtras.get(name);
3267            if (result2 != null) {
3268                result = result2;
3269            }
3270        }
3271
3272        return result;
3273    }
3274
3275    /**
3276     * Retrieves a map of extended data from the intent.
3277     *
3278     * @return the map of all extras previously added with putExtra(),
3279     * or null if none have been added.
3280     */
3281    public Bundle getExtras() {
3282        return (mExtras != null)
3283                ? new Bundle(mExtras)
3284                : null;
3285    }
3286
3287    /**
3288     * Retrieve any special flags associated with this intent.  You will
3289     * normally just set them with {@link #setFlags} and let the system
3290     * take the appropriate action with them.
3291     *
3292     * @return int The currently set flags.
3293     *
3294     * @see #setFlags
3295     */
3296    public int getFlags() {
3297        return mFlags;
3298    }
3299
3300    /**
3301     * Retrieve the application package name this Intent is limited to.  When
3302     * resolving an Intent, if non-null this limits the resolution to only
3303     * components in the given application package.
3304     *
3305     * @return The name of the application package for the Intent.
3306     *
3307     * @see #resolveActivity
3308     * @see #setPackage
3309     */
3310    public String getPackage() {
3311        return mPackage;
3312    }
3313
3314    /**
3315     * Retrieve the concrete component associated with the intent.  When receiving
3316     * an intent, this is the component that was found to best handle it (that is,
3317     * yourself) and will always be non-null; in all other cases it will be
3318     * null unless explicitly set.
3319     *
3320     * @return The name of the application component to handle the intent.
3321     *
3322     * @see #resolveActivity
3323     * @see #setComponent
3324     */
3325    public ComponentName getComponent() {
3326        return mComponent;
3327    }
3328
3329    /**
3330     * Return the Activity component that should be used to handle this intent.
3331     * The appropriate component is determined based on the information in the
3332     * intent, evaluated as follows:
3333     *
3334     * <p>If {@link #getComponent} returns an explicit class, that is returned
3335     * without any further consideration.
3336     *
3337     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
3338     * category to be considered.
3339     *
3340     * <p>If {@link #getAction} is non-NULL, the activity must handle this
3341     * action.
3342     *
3343     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
3344     * this type.
3345     *
3346     * <p>If {@link #addCategory} has added any categories, the activity must
3347     * handle ALL of the categories specified.
3348     *
3349     * <p>If {@link #getPackage} is non-NULL, only activity components in
3350     * that application package will be considered.
3351     *
3352     * <p>If there are no activities that satisfy all of these conditions, a
3353     * null string is returned.
3354     *
3355     * <p>If multiple activities are found to satisfy the intent, the one with
3356     * the highest priority will be used.  If there are multiple activities
3357     * with the same priority, the system will either pick the best activity
3358     * based on user preference, or resolve to a system class that will allow
3359     * the user to pick an activity and forward from there.
3360     *
3361     * <p>This method is implemented simply by calling
3362     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
3363     * true.</p>
3364     * <p> This API is called for you as part of starting an activity from an
3365     * intent.  You do not normally need to call it yourself.</p>
3366     *
3367     * @param pm The package manager with which to resolve the Intent.
3368     *
3369     * @return Name of the component implementing an activity that can
3370     *         display the intent.
3371     *
3372     * @see #setComponent
3373     * @see #getComponent
3374     * @see #resolveActivityInfo
3375     */
3376    public ComponentName resolveActivity(PackageManager pm) {
3377        if (mComponent != null) {
3378            return mComponent;
3379        }
3380
3381        ResolveInfo info = pm.resolveActivity(
3382            this, PackageManager.MATCH_DEFAULT_ONLY);
3383        if (info != null) {
3384            return new ComponentName(
3385                    info.activityInfo.applicationInfo.packageName,
3386                    info.activityInfo.name);
3387        }
3388
3389        return null;
3390    }
3391
3392    /**
3393     * Resolve the Intent into an {@link ActivityInfo}
3394     * describing the activity that should execute the intent.  Resolution
3395     * follows the same rules as described for {@link #resolveActivity}, but
3396     * you get back the completely information about the resolved activity
3397     * instead of just its class name.
3398     *
3399     * @param pm The package manager with which to resolve the Intent.
3400     * @param flags Addition information to retrieve as per
3401     * {@link PackageManager#getActivityInfo(ComponentName, int)
3402     * PackageManager.getActivityInfo()}.
3403     *
3404     * @return PackageManager.ActivityInfo
3405     *
3406     * @see #resolveActivity
3407     */
3408    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
3409        ActivityInfo ai = null;
3410        if (mComponent != null) {
3411            try {
3412                ai = pm.getActivityInfo(mComponent, flags);
3413            } catch (PackageManager.NameNotFoundException e) {
3414                // ignore
3415            }
3416        } else {
3417            ResolveInfo info = pm.resolveActivity(
3418                this, PackageManager.MATCH_DEFAULT_ONLY);
3419            if (info != null) {
3420                ai = info.activityInfo;
3421            }
3422        }
3423
3424        return ai;
3425    }
3426
3427    /**
3428     * Set the general action to be performed.
3429     *
3430     * @param action An action name, such as ACTION_VIEW.  Application-specific
3431     *               actions should be prefixed with the vendor's package name.
3432     *
3433     * @return Returns the same Intent object, for chaining multiple calls
3434     * into a single statement.
3435     *
3436     * @see #getAction
3437     */
3438    public Intent setAction(String action) {
3439        mAction = action;
3440        return this;
3441    }
3442
3443    /**
3444     * Set the data this intent is operating on.  This method automatically
3445     * clears any type that was previously set by {@link #setType}.
3446     *
3447     * <p><em>Note: scheme and host name matching in the Android framework is
3448     * case-sensitive, unlike the formal RFC.  As a result,
3449     * you should always ensure that you write your Uri with these elements
3450     * using lower case letters, and normalize any Uris you receive from
3451     * outside of Android to ensure the scheme and host is lower case.</em></p>
3452     *
3453     * @param data The URI of the data this intent is now targeting.
3454     *
3455     * @return Returns the same Intent object, for chaining multiple calls
3456     * into a single statement.
3457     *
3458     * @see #getData
3459     * @see #setType
3460     * @see #setDataAndType
3461     */
3462    public Intent setData(Uri data) {
3463        mData = data;
3464        mType = null;
3465        return this;
3466    }
3467
3468    /**
3469     * Set an explicit MIME data type.  This is used to create intents that
3470     * only specify a type and not data, for example to indicate the type of
3471     * data to return.  This method automatically clears any data that was
3472     * previously set by {@link #setData}.
3473     *
3474     * <p><em>Note: MIME type matching in the Android framework is
3475     * case-sensitive, unlike formal RFC MIME types.  As a result,
3476     * you should always write your MIME types with lower case letters,
3477     * and any MIME types you receive from outside of Android should be
3478     * converted to lower case before supplying them here.</em></p>
3479     *
3480     * @param type The MIME type of the data being handled by this intent.
3481     *
3482     * @return Returns the same Intent object, for chaining multiple calls
3483     * into a single statement.
3484     *
3485     * @see #getType
3486     * @see #setData
3487     * @see #setDataAndType
3488     */
3489    public Intent setType(String type) {
3490        mData = null;
3491        mType = type;
3492        return this;
3493    }
3494
3495    /**
3496     * (Usually optional) Set the data for the intent along with an explicit
3497     * MIME data type.  This method should very rarely be used -- it allows you
3498     * to override the MIME type that would ordinarily be inferred from the
3499     * data with your own type given here.
3500     *
3501     * <p><em>Note: MIME type, Uri scheme, and host name matching in the
3502     * Android framework is case-sensitive, unlike the formal RFC definitions.
3503     * As a result, you should always write these elements with lower case letters,
3504     * and normalize any MIME types or Uris you receive from
3505     * outside of Android to ensure these elements are lower case before
3506     * supplying them here.</em></p>
3507     *
3508     * @param data The URI of the data this intent is now targeting.
3509     * @param type The MIME type of the data being handled by this intent.
3510     *
3511     * @return Returns the same Intent object, for chaining multiple calls
3512     * into a single statement.
3513     *
3514     * @see #setData
3515     * @see #setType
3516     */
3517    public Intent setDataAndType(Uri data, String type) {
3518        mData = data;
3519        mType = type;
3520        return this;
3521    }
3522
3523    /**
3524     * Add a new category to the intent.  Categories provide additional detail
3525     * about the action the intent is perform.  When resolving an intent, only
3526     * activities that provide <em>all</em> of the requested categories will be
3527     * used.
3528     *
3529     * @param category The desired category.  This can be either one of the
3530     *               predefined Intent categories, or a custom category in your own
3531     *               namespace.
3532     *
3533     * @return Returns the same Intent object, for chaining multiple calls
3534     * into a single statement.
3535     *
3536     * @see #hasCategory
3537     * @see #removeCategory
3538     */
3539    public Intent addCategory(String category) {
3540        if (mCategories == null) {
3541            mCategories = new HashSet<String>();
3542        }
3543        mCategories.add(category);
3544        return this;
3545    }
3546
3547    /**
3548     * Remove an category from an intent.
3549     *
3550     * @param category The category to remove.
3551     *
3552     * @see #addCategory
3553     */
3554    public void removeCategory(String category) {
3555        if (mCategories != null) {
3556            mCategories.remove(category);
3557            if (mCategories.size() == 0) {
3558                mCategories = null;
3559            }
3560        }
3561    }
3562
3563    /**
3564     * Add extended data to the intent.  The name must include a package
3565     * prefix, for example the app com.android.contacts would use names
3566     * like "com.android.contacts.ShowAll".
3567     *
3568     * @param name The name of the extra data, with package prefix.
3569     * @param value The boolean data value.
3570     *
3571     * @return Returns the same Intent object, for chaining multiple calls
3572     * into a single statement.
3573     *
3574     * @see #putExtras
3575     * @see #removeExtra
3576     * @see #getBooleanExtra(String, boolean)
3577     */
3578    public Intent putExtra(String name, boolean value) {
3579        if (mExtras == null) {
3580            mExtras = new Bundle();
3581        }
3582        mExtras.putBoolean(name, value);
3583        return this;
3584    }
3585
3586    /**
3587     * Add extended data to the intent.  The name must include a package
3588     * prefix, for example the app com.android.contacts would use names
3589     * like "com.android.contacts.ShowAll".
3590     *
3591     * @param name The name of the extra data, with package prefix.
3592     * @param value The byte data value.
3593     *
3594     * @return Returns the same Intent object, for chaining multiple calls
3595     * into a single statement.
3596     *
3597     * @see #putExtras
3598     * @see #removeExtra
3599     * @see #getByteExtra(String, byte)
3600     */
3601    public Intent putExtra(String name, byte value) {
3602        if (mExtras == null) {
3603            mExtras = new Bundle();
3604        }
3605        mExtras.putByte(name, value);
3606        return this;
3607    }
3608
3609    /**
3610     * Add extended data to the intent.  The name must include a package
3611     * prefix, for example the app com.android.contacts would use names
3612     * like "com.android.contacts.ShowAll".
3613     *
3614     * @param name The name of the extra data, with package prefix.
3615     * @param value The char data value.
3616     *
3617     * @return Returns the same Intent object, for chaining multiple calls
3618     * into a single statement.
3619     *
3620     * @see #putExtras
3621     * @see #removeExtra
3622     * @see #getCharExtra(String, char)
3623     */
3624    public Intent putExtra(String name, char value) {
3625        if (mExtras == null) {
3626            mExtras = new Bundle();
3627        }
3628        mExtras.putChar(name, value);
3629        return this;
3630    }
3631
3632    /**
3633     * Add extended data to the intent.  The name must include a package
3634     * prefix, for example the app com.android.contacts would use names
3635     * like "com.android.contacts.ShowAll".
3636     *
3637     * @param name The name of the extra data, with package prefix.
3638     * @param value The short data value.
3639     *
3640     * @return Returns the same Intent object, for chaining multiple calls
3641     * into a single statement.
3642     *
3643     * @see #putExtras
3644     * @see #removeExtra
3645     * @see #getShortExtra(String, short)
3646     */
3647    public Intent putExtra(String name, short value) {
3648        if (mExtras == null) {
3649            mExtras = new Bundle();
3650        }
3651        mExtras.putShort(name, value);
3652        return this;
3653    }
3654
3655    /**
3656     * Add extended data to the intent.  The name must include a package
3657     * prefix, for example the app com.android.contacts would use names
3658     * like "com.android.contacts.ShowAll".
3659     *
3660     * @param name The name of the extra data, with package prefix.
3661     * @param value The integer data value.
3662     *
3663     * @return Returns the same Intent object, for chaining multiple calls
3664     * into a single statement.
3665     *
3666     * @see #putExtras
3667     * @see #removeExtra
3668     * @see #getIntExtra(String, int)
3669     */
3670    public Intent putExtra(String name, int value) {
3671        if (mExtras == null) {
3672            mExtras = new Bundle();
3673        }
3674        mExtras.putInt(name, value);
3675        return this;
3676    }
3677
3678    /**
3679     * Add extended data to the intent.  The name must include a package
3680     * prefix, for example the app com.android.contacts would use names
3681     * like "com.android.contacts.ShowAll".
3682     *
3683     * @param name The name of the extra data, with package prefix.
3684     * @param value The long data value.
3685     *
3686     * @return Returns the same Intent object, for chaining multiple calls
3687     * into a single statement.
3688     *
3689     * @see #putExtras
3690     * @see #removeExtra
3691     * @see #getLongExtra(String, long)
3692     */
3693    public Intent putExtra(String name, long value) {
3694        if (mExtras == null) {
3695            mExtras = new Bundle();
3696        }
3697        mExtras.putLong(name, value);
3698        return this;
3699    }
3700
3701    /**
3702     * Add extended data to the intent.  The name must include a package
3703     * prefix, for example the app com.android.contacts would use names
3704     * like "com.android.contacts.ShowAll".
3705     *
3706     * @param name The name of the extra data, with package prefix.
3707     * @param value The float data value.
3708     *
3709     * @return Returns the same Intent object, for chaining multiple calls
3710     * into a single statement.
3711     *
3712     * @see #putExtras
3713     * @see #removeExtra
3714     * @see #getFloatExtra(String, float)
3715     */
3716    public Intent putExtra(String name, float value) {
3717        if (mExtras == null) {
3718            mExtras = new Bundle();
3719        }
3720        mExtras.putFloat(name, value);
3721        return this;
3722    }
3723
3724    /**
3725     * Add extended data to the intent.  The name must include a package
3726     * prefix, for example the app com.android.contacts would use names
3727     * like "com.android.contacts.ShowAll".
3728     *
3729     * @param name The name of the extra data, with package prefix.
3730     * @param value The double data value.
3731     *
3732     * @return Returns the same Intent object, for chaining multiple calls
3733     * into a single statement.
3734     *
3735     * @see #putExtras
3736     * @see #removeExtra
3737     * @see #getDoubleExtra(String, double)
3738     */
3739    public Intent putExtra(String name, double value) {
3740        if (mExtras == null) {
3741            mExtras = new Bundle();
3742        }
3743        mExtras.putDouble(name, value);
3744        return this;
3745    }
3746
3747    /**
3748     * Add extended data to the intent.  The name must include a package
3749     * prefix, for example the app com.android.contacts would use names
3750     * like "com.android.contacts.ShowAll".
3751     *
3752     * @param name The name of the extra data, with package prefix.
3753     * @param value The String data value.
3754     *
3755     * @return Returns the same Intent object, for chaining multiple calls
3756     * into a single statement.
3757     *
3758     * @see #putExtras
3759     * @see #removeExtra
3760     * @see #getStringExtra(String)
3761     */
3762    public Intent putExtra(String name, String value) {
3763        if (mExtras == null) {
3764            mExtras = new Bundle();
3765        }
3766        mExtras.putString(name, value);
3767        return this;
3768    }
3769
3770    /**
3771     * Add extended data to the intent.  The name must include a package
3772     * prefix, for example the app com.android.contacts would use names
3773     * like "com.android.contacts.ShowAll".
3774     *
3775     * @param name The name of the extra data, with package prefix.
3776     * @param value The CharSequence data value.
3777     *
3778     * @return Returns the same Intent object, for chaining multiple calls
3779     * into a single statement.
3780     *
3781     * @see #putExtras
3782     * @see #removeExtra
3783     * @see #getCharSequenceExtra(String)
3784     */
3785    public Intent putExtra(String name, CharSequence value) {
3786        if (mExtras == null) {
3787            mExtras = new Bundle();
3788        }
3789        mExtras.putCharSequence(name, value);
3790        return this;
3791    }
3792
3793    /**
3794     * Add extended data to the intent.  The name must include a package
3795     * prefix, for example the app com.android.contacts would use names
3796     * like "com.android.contacts.ShowAll".
3797     *
3798     * @param name The name of the extra data, with package prefix.
3799     * @param value The Parcelable data value.
3800     *
3801     * @return Returns the same Intent object, for chaining multiple calls
3802     * into a single statement.
3803     *
3804     * @see #putExtras
3805     * @see #removeExtra
3806     * @see #getParcelableExtra(String)
3807     */
3808    public Intent putExtra(String name, Parcelable value) {
3809        if (mExtras == null) {
3810            mExtras = new Bundle();
3811        }
3812        mExtras.putParcelable(name, value);
3813        return this;
3814    }
3815
3816    /**
3817     * Add extended data to the intent.  The name must include a package
3818     * prefix, for example the app com.android.contacts would use names
3819     * like "com.android.contacts.ShowAll".
3820     *
3821     * @param name The name of the extra data, with package prefix.
3822     * @param value The Parcelable[] data value.
3823     *
3824     * @return Returns the same Intent object, for chaining multiple calls
3825     * into a single statement.
3826     *
3827     * @see #putExtras
3828     * @see #removeExtra
3829     * @see #getParcelableArrayExtra(String)
3830     */
3831    public Intent putExtra(String name, Parcelable[] value) {
3832        if (mExtras == null) {
3833            mExtras = new Bundle();
3834        }
3835        mExtras.putParcelableArray(name, value);
3836        return this;
3837    }
3838
3839    /**
3840     * Add extended data to the intent.  The name must include a package
3841     * prefix, for example the app com.android.contacts would use names
3842     * like "com.android.contacts.ShowAll".
3843     *
3844     * @param name The name of the extra data, with package prefix.
3845     * @param value The ArrayList<Parcelable> data value.
3846     *
3847     * @return Returns the same Intent object, for chaining multiple calls
3848     * into a single statement.
3849     *
3850     * @see #putExtras
3851     * @see #removeExtra
3852     * @see #getParcelableArrayListExtra(String)
3853     */
3854    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3855        if (mExtras == null) {
3856            mExtras = new Bundle();
3857        }
3858        mExtras.putParcelableArrayList(name, value);
3859        return this;
3860    }
3861
3862    /**
3863     * Add extended data to the intent.  The name must include a package
3864     * prefix, for example the app com.android.contacts would use names
3865     * like "com.android.contacts.ShowAll".
3866     *
3867     * @param name The name of the extra data, with package prefix.
3868     * @param value The ArrayList<Integer> data value.
3869     *
3870     * @return Returns the same Intent object, for chaining multiple calls
3871     * into a single statement.
3872     *
3873     * @see #putExtras
3874     * @see #removeExtra
3875     * @see #getIntegerArrayListExtra(String)
3876     */
3877    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3878        if (mExtras == null) {
3879            mExtras = new Bundle();
3880        }
3881        mExtras.putIntegerArrayList(name, value);
3882        return this;
3883    }
3884
3885    /**
3886     * Add extended data to the intent.  The name must include a package
3887     * prefix, for example the app com.android.contacts would use names
3888     * like "com.android.contacts.ShowAll".
3889     *
3890     * @param name The name of the extra data, with package prefix.
3891     * @param value The ArrayList<String> data value.
3892     *
3893     * @return Returns the same Intent object, for chaining multiple calls
3894     * into a single statement.
3895     *
3896     * @see #putExtras
3897     * @see #removeExtra
3898     * @see #getStringArrayListExtra(String)
3899     */
3900    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3901        if (mExtras == null) {
3902            mExtras = new Bundle();
3903        }
3904        mExtras.putStringArrayList(name, value);
3905        return this;
3906    }
3907
3908    /**
3909     * Add extended data to the intent.  The name must include a package
3910     * prefix, for example the app com.android.contacts would use names
3911     * like "com.android.contacts.ShowAll".
3912     *
3913     * @param name The name of the extra data, with package prefix.
3914     * @param value The Serializable data value.
3915     *
3916     * @return Returns the same Intent object, for chaining multiple calls
3917     * into a single statement.
3918     *
3919     * @see #putExtras
3920     * @see #removeExtra
3921     * @see #getSerializableExtra(String)
3922     */
3923    public Intent putExtra(String name, Serializable value) {
3924        if (mExtras == null) {
3925            mExtras = new Bundle();
3926        }
3927        mExtras.putSerializable(name, value);
3928        return this;
3929    }
3930
3931    /**
3932     * Add extended data to the intent.  The name must include a package
3933     * prefix, for example the app com.android.contacts would use names
3934     * like "com.android.contacts.ShowAll".
3935     *
3936     * @param name The name of the extra data, with package prefix.
3937     * @param value The boolean array data value.
3938     *
3939     * @return Returns the same Intent object, for chaining multiple calls
3940     * into a single statement.
3941     *
3942     * @see #putExtras
3943     * @see #removeExtra
3944     * @see #getBooleanArrayExtra(String)
3945     */
3946    public Intent putExtra(String name, boolean[] value) {
3947        if (mExtras == null) {
3948            mExtras = new Bundle();
3949        }
3950        mExtras.putBooleanArray(name, value);
3951        return this;
3952    }
3953
3954    /**
3955     * Add extended data to the intent.  The name must include a package
3956     * prefix, for example the app com.android.contacts would use names
3957     * like "com.android.contacts.ShowAll".
3958     *
3959     * @param name The name of the extra data, with package prefix.
3960     * @param value The byte array data value.
3961     *
3962     * @return Returns the same Intent object, for chaining multiple calls
3963     * into a single statement.
3964     *
3965     * @see #putExtras
3966     * @see #removeExtra
3967     * @see #getByteArrayExtra(String)
3968     */
3969    public Intent putExtra(String name, byte[] value) {
3970        if (mExtras == null) {
3971            mExtras = new Bundle();
3972        }
3973        mExtras.putByteArray(name, value);
3974        return this;
3975    }
3976
3977    /**
3978     * Add extended data to the intent.  The name must include a package
3979     * prefix, for example the app com.android.contacts would use names
3980     * like "com.android.contacts.ShowAll".
3981     *
3982     * @param name The name of the extra data, with package prefix.
3983     * @param value The short array data value.
3984     *
3985     * @return Returns the same Intent object, for chaining multiple calls
3986     * into a single statement.
3987     *
3988     * @see #putExtras
3989     * @see #removeExtra
3990     * @see #getShortArrayExtra(String)
3991     */
3992    public Intent putExtra(String name, short[] value) {
3993        if (mExtras == null) {
3994            mExtras = new Bundle();
3995        }
3996        mExtras.putShortArray(name, value);
3997        return this;
3998    }
3999
4000    /**
4001     * Add extended data to the intent.  The name must include a package
4002     * prefix, for example the app com.android.contacts would use names
4003     * like "com.android.contacts.ShowAll".
4004     *
4005     * @param name The name of the extra data, with package prefix.
4006     * @param value The char array data value.
4007     *
4008     * @return Returns the same Intent object, for chaining multiple calls
4009     * into a single statement.
4010     *
4011     * @see #putExtras
4012     * @see #removeExtra
4013     * @see #getCharArrayExtra(String)
4014     */
4015    public Intent putExtra(String name, char[] value) {
4016        if (mExtras == null) {
4017            mExtras = new Bundle();
4018        }
4019        mExtras.putCharArray(name, value);
4020        return this;
4021    }
4022
4023    /**
4024     * Add extended data to the intent.  The name must include a package
4025     * prefix, for example the app com.android.contacts would use names
4026     * like "com.android.contacts.ShowAll".
4027     *
4028     * @param name The name of the extra data, with package prefix.
4029     * @param value The int array data value.
4030     *
4031     * @return Returns the same Intent object, for chaining multiple calls
4032     * into a single statement.
4033     *
4034     * @see #putExtras
4035     * @see #removeExtra
4036     * @see #getIntArrayExtra(String)
4037     */
4038    public Intent putExtra(String name, int[] value) {
4039        if (mExtras == null) {
4040            mExtras = new Bundle();
4041        }
4042        mExtras.putIntArray(name, value);
4043        return this;
4044    }
4045
4046    /**
4047     * Add extended data to the intent.  The name must include a package
4048     * prefix, for example the app com.android.contacts would use names
4049     * like "com.android.contacts.ShowAll".
4050     *
4051     * @param name The name of the extra data, with package prefix.
4052     * @param value The byte array data value.
4053     *
4054     * @return Returns the same Intent object, for chaining multiple calls
4055     * into a single statement.
4056     *
4057     * @see #putExtras
4058     * @see #removeExtra
4059     * @see #getLongArrayExtra(String)
4060     */
4061    public Intent putExtra(String name, long[] value) {
4062        if (mExtras == null) {
4063            mExtras = new Bundle();
4064        }
4065        mExtras.putLongArray(name, value);
4066        return this;
4067    }
4068
4069    /**
4070     * Add extended data to the intent.  The name must include a package
4071     * prefix, for example the app com.android.contacts would use names
4072     * like "com.android.contacts.ShowAll".
4073     *
4074     * @param name The name of the extra data, with package prefix.
4075     * @param value The float array data value.
4076     *
4077     * @return Returns the same Intent object, for chaining multiple calls
4078     * into a single statement.
4079     *
4080     * @see #putExtras
4081     * @see #removeExtra
4082     * @see #getFloatArrayExtra(String)
4083     */
4084    public Intent putExtra(String name, float[] value) {
4085        if (mExtras == null) {
4086            mExtras = new Bundle();
4087        }
4088        mExtras.putFloatArray(name, value);
4089        return this;
4090    }
4091
4092    /**
4093     * Add extended data to the intent.  The name must include a package
4094     * prefix, for example the app com.android.contacts would use names
4095     * like "com.android.contacts.ShowAll".
4096     *
4097     * @param name The name of the extra data, with package prefix.
4098     * @param value The double array data value.
4099     *
4100     * @return Returns the same Intent object, for chaining multiple calls
4101     * into a single statement.
4102     *
4103     * @see #putExtras
4104     * @see #removeExtra
4105     * @see #getDoubleArrayExtra(String)
4106     */
4107    public Intent putExtra(String name, double[] value) {
4108        if (mExtras == null) {
4109            mExtras = new Bundle();
4110        }
4111        mExtras.putDoubleArray(name, value);
4112        return this;
4113    }
4114
4115    /**
4116     * Add extended data to the intent.  The name must include a package
4117     * prefix, for example the app com.android.contacts would use names
4118     * like "com.android.contacts.ShowAll".
4119     *
4120     * @param name The name of the extra data, with package prefix.
4121     * @param value The String array data value.
4122     *
4123     * @return Returns the same Intent object, for chaining multiple calls
4124     * into a single statement.
4125     *
4126     * @see #putExtras
4127     * @see #removeExtra
4128     * @see #getStringArrayExtra(String)
4129     */
4130    public Intent putExtra(String name, String[] value) {
4131        if (mExtras == null) {
4132            mExtras = new Bundle();
4133        }
4134        mExtras.putStringArray(name, value);
4135        return this;
4136    }
4137
4138    /**
4139     * Add extended data to the intent.  The name must include a package
4140     * prefix, for example the app com.android.contacts would use names
4141     * like "com.android.contacts.ShowAll".
4142     *
4143     * @param name The name of the extra data, with package prefix.
4144     * @param value The Bundle data value.
4145     *
4146     * @return Returns the same Intent object, for chaining multiple calls
4147     * into a single statement.
4148     *
4149     * @see #putExtras
4150     * @see #removeExtra
4151     * @see #getBundleExtra(String)
4152     */
4153    public Intent putExtra(String name, Bundle value) {
4154        if (mExtras == null) {
4155            mExtras = new Bundle();
4156        }
4157        mExtras.putBundle(name, value);
4158        return this;
4159    }
4160
4161    /**
4162     * Add extended data to the intent.  The name must include a package
4163     * prefix, for example the app com.android.contacts would use names
4164     * like "com.android.contacts.ShowAll".
4165     *
4166     * @param name The name of the extra data, with package prefix.
4167     * @param value The IBinder data value.
4168     *
4169     * @return Returns the same Intent object, for chaining multiple calls
4170     * into a single statement.
4171     *
4172     * @see #putExtras
4173     * @see #removeExtra
4174     * @see #getIBinderExtra(String)
4175     *
4176     * @deprecated
4177     * @hide
4178     */
4179    @Deprecated
4180    public Intent putExtra(String name, IBinder value) {
4181        if (mExtras == null) {
4182            mExtras = new Bundle();
4183        }
4184        mExtras.putIBinder(name, value);
4185        return this;
4186    }
4187
4188    /**
4189     * Copy all extras in 'src' in to this intent.
4190     *
4191     * @param src Contains the extras to copy.
4192     *
4193     * @see #putExtra
4194     */
4195    public Intent putExtras(Intent src) {
4196        if (src.mExtras != null) {
4197            if (mExtras == null) {
4198                mExtras = new Bundle(src.mExtras);
4199            } else {
4200                mExtras.putAll(src.mExtras);
4201            }
4202        }
4203        return this;
4204    }
4205
4206    /**
4207     * Add a set of extended data to the intent.  The keys must include a package
4208     * prefix, for example the app com.android.contacts would use names
4209     * like "com.android.contacts.ShowAll".
4210     *
4211     * @param extras The Bundle of extras to add to this intent.
4212     *
4213     * @see #putExtra
4214     * @see #removeExtra
4215     */
4216    public Intent putExtras(Bundle extras) {
4217        if (mExtras == null) {
4218            mExtras = new Bundle();
4219        }
4220        mExtras.putAll(extras);
4221        return this;
4222    }
4223
4224    /**
4225     * Completely replace the extras in the Intent with the extras in the
4226     * given Intent.
4227     *
4228     * @param src The exact extras contained in this Intent are copied
4229     * into the target intent, replacing any that were previously there.
4230     */
4231    public Intent replaceExtras(Intent src) {
4232        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
4233        return this;
4234    }
4235
4236    /**
4237     * Completely replace the extras in the Intent with the given Bundle of
4238     * extras.
4239     *
4240     * @param extras The new set of extras in the Intent, or null to erase
4241     * all extras.
4242     */
4243    public Intent replaceExtras(Bundle extras) {
4244        mExtras = extras != null ? new Bundle(extras) : null;
4245        return this;
4246    }
4247
4248    /**
4249     * Remove extended data from the intent.
4250     *
4251     * @see #putExtra
4252     */
4253    public void removeExtra(String name) {
4254        if (mExtras != null) {
4255            mExtras.remove(name);
4256            if (mExtras.size() == 0) {
4257                mExtras = null;
4258            }
4259        }
4260    }
4261
4262    /**
4263     * Set special flags controlling how this intent is handled.  Most values
4264     * here depend on the type of component being executed by the Intent,
4265     * specifically the FLAG_ACTIVITY_* flags are all for use with
4266     * {@link Context#startActivity Context.startActivity()} and the
4267     * FLAG_RECEIVER_* flags are all for use with
4268     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
4269     *
4270     * <p>See the <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
4271     * Activities and Tasks</a> documentation for important information on how some of these options impact
4272     * the behavior of your application.
4273     *
4274     * @param flags The desired flags.
4275     *
4276     * @return Returns the same Intent object, for chaining multiple calls
4277     * into a single statement.
4278     *
4279     * @see #getFlags
4280     * @see #addFlags
4281     *
4282     * @see #FLAG_GRANT_READ_URI_PERMISSION
4283     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
4284     * @see #FLAG_DEBUG_LOG_RESOLUTION
4285     * @see #FLAG_FROM_BACKGROUND
4286     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
4287     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
4288     * @see #FLAG_ACTIVITY_CLEAR_TOP
4289     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
4290     * @see #FLAG_ACTIVITY_FORWARD_RESULT
4291     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
4292     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
4293     * @see #FLAG_ACTIVITY_NEW_TASK
4294     * @see #FLAG_ACTIVITY_NO_HISTORY
4295     * @see #FLAG_ACTIVITY_NO_USER_ACTION
4296     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
4297     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
4298     * @see #FLAG_ACTIVITY_SINGLE_TOP
4299     * @see #FLAG_RECEIVER_REGISTERED_ONLY
4300     */
4301    public Intent setFlags(int flags) {
4302        mFlags = flags;
4303        return this;
4304    }
4305
4306    /**
4307     * Add additional flags to the intent (or with existing flags
4308     * value).
4309     *
4310     * @param flags The new flags to set.
4311     *
4312     * @return Returns the same Intent object, for chaining multiple calls
4313     * into a single statement.
4314     *
4315     * @see #setFlags
4316     */
4317    public Intent addFlags(int flags) {
4318        mFlags |= flags;
4319        return this;
4320    }
4321
4322    /**
4323     * (Usually optional) Set an explicit application package name that limits
4324     * the components this Intent will resolve to.  If left to the default
4325     * value of null, all components in all applications will considered.
4326     * If non-null, the Intent can only match the components in the given
4327     * application package.
4328     *
4329     * @param packageName The name of the application package to handle the
4330     * intent, or null to allow any application package.
4331     *
4332     * @return Returns the same Intent object, for chaining multiple calls
4333     * into a single statement.
4334     *
4335     * @see #getPackage
4336     * @see #resolveActivity
4337     */
4338    public Intent setPackage(String packageName) {
4339        mPackage = packageName;
4340        return this;
4341    }
4342
4343    /**
4344     * (Usually optional) Explicitly set the component to handle the intent.
4345     * If left with the default value of null, the system will determine the
4346     * appropriate class to use based on the other fields (action, data,
4347     * type, categories) in the Intent.  If this class is defined, the
4348     * specified class will always be used regardless of the other fields.  You
4349     * should only set this value when you know you absolutely want a specific
4350     * class to be used; otherwise it is better to let the system find the
4351     * appropriate class so that you will respect the installed applications
4352     * and user preferences.
4353     *
4354     * @param component The name of the application component to handle the
4355     * intent, or null to let the system find one for you.
4356     *
4357     * @return Returns the same Intent object, for chaining multiple calls
4358     * into a single statement.
4359     *
4360     * @see #setClass
4361     * @see #setClassName(Context, String)
4362     * @see #setClassName(String, String)
4363     * @see #getComponent
4364     * @see #resolveActivity
4365     */
4366    public Intent setComponent(ComponentName component) {
4367        mComponent = component;
4368        return this;
4369    }
4370
4371    /**
4372     * Convenience for calling {@link #setComponent} with an
4373     * explicit class name.
4374     *
4375     * @param packageContext A Context of the application package implementing
4376     * this class.
4377     * @param className The name of a class inside of the application package
4378     * that will be used as the component for this Intent.
4379     *
4380     * @return Returns the same Intent object, for chaining multiple calls
4381     * into a single statement.
4382     *
4383     * @see #setComponent
4384     * @see #setClass
4385     */
4386    public Intent setClassName(Context packageContext, String className) {
4387        mComponent = new ComponentName(packageContext, className);
4388        return this;
4389    }
4390
4391    /**
4392     * Convenience for calling {@link #setComponent} with an
4393     * explicit application package name and class name.
4394     *
4395     * @param packageName The name of the package implementing the desired
4396     * component.
4397     * @param className The name of a class inside of the application package
4398     * that will be used as the component for this Intent.
4399     *
4400     * @return Returns the same Intent object, for chaining multiple calls
4401     * into a single statement.
4402     *
4403     * @see #setComponent
4404     * @see #setClass
4405     */
4406    public Intent setClassName(String packageName, String className) {
4407        mComponent = new ComponentName(packageName, className);
4408        return this;
4409    }
4410
4411    /**
4412     * Convenience for calling {@link #setComponent(ComponentName)} with the
4413     * name returned by a {@link Class} object.
4414     *
4415     * @param packageContext A Context of the application package implementing
4416     * this class.
4417     * @param cls The class name to set, equivalent to
4418     *            <code>setClassName(context, cls.getName())</code>.
4419     *
4420     * @return Returns the same Intent object, for chaining multiple calls
4421     * into a single statement.
4422     *
4423     * @see #setComponent
4424     */
4425    public Intent setClass(Context packageContext, Class<?> cls) {
4426        mComponent = new ComponentName(packageContext, cls);
4427        return this;
4428    }
4429
4430    /**
4431     * Use with {@link #fillIn} to allow the current action value to be
4432     * overwritten, even if it is already set.
4433     */
4434    public static final int FILL_IN_ACTION = 1<<0;
4435
4436    /**
4437     * Use with {@link #fillIn} to allow the current data or type value
4438     * overwritten, even if it is already set.
4439     */
4440    public static final int FILL_IN_DATA = 1<<1;
4441
4442    /**
4443     * Use with {@link #fillIn} to allow the current categories to be
4444     * overwritten, even if they are already set.
4445     */
4446    public static final int FILL_IN_CATEGORIES = 1<<2;
4447
4448    /**
4449     * Use with {@link #fillIn} to allow the current component value to be
4450     * overwritten, even if it is already set.
4451     */
4452    public static final int FILL_IN_COMPONENT = 1<<3;
4453
4454    /**
4455     * Use with {@link #fillIn} to allow the current package value to be
4456     * overwritten, even if it is already set.
4457     */
4458    public static final int FILL_IN_PACKAGE = 1<<4;
4459
4460    /**
4461     * Copy the contents of <var>other</var> in to this object, but only
4462     * where fields are not defined by this object.  For purposes of a field
4463     * being defined, the following pieces of data in the Intent are
4464     * considered to be separate fields:
4465     *
4466     * <ul>
4467     * <li> action, as set by {@link #setAction}.
4468     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4469     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4470     * <li> categories, as set by {@link #addCategory}.
4471     * <li> package, as set by {@link #setPackage}.
4472     * <li> component, as set by {@link #setComponent(ComponentName)} or
4473     * related methods.
4474     * <li> each top-level name in the associated extras.
4475     * </ul>
4476     *
4477     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4478     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4479     * and {@link #FILL_IN_COMPONENT} to override the restriction where the
4480     * corresponding field will not be replaced if it is already set.
4481     *
4482     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4483     * and Intent B with {action="gotit", data-type="some/thing",
4484     * categories="one","two"}.
4485     *
4486     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4487     * containing: {action="gotit", data-type="some/thing",
4488     * categories="bar"}.
4489     *
4490     * @param other Another Intent whose values are to be used to fill in
4491     * the current one.
4492     * @param flags Options to control which fields can be filled in.
4493     *
4494     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4495     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4496     * and {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4497     */
4498    public int fillIn(Intent other, int flags) {
4499        int changes = 0;
4500        if (other.mAction != null
4501                && (mAction == null || (flags&FILL_IN_ACTION) != 0)) {
4502            mAction = other.mAction;
4503            changes |= FILL_IN_ACTION;
4504        }
4505        if ((other.mData != null || other.mType != null)
4506                && ((mData == null && mType == null)
4507                        || (flags&FILL_IN_DATA) != 0)) {
4508            mData = other.mData;
4509            mType = other.mType;
4510            changes |= FILL_IN_DATA;
4511        }
4512        if (other.mCategories != null
4513                && (mCategories == null || (flags&FILL_IN_CATEGORIES) != 0)) {
4514            if (other.mCategories != null) {
4515                mCategories = new HashSet<String>(other.mCategories);
4516            }
4517            changes |= FILL_IN_CATEGORIES;
4518        }
4519        if (other.mPackage != null
4520                && (mPackage == null || (flags&FILL_IN_PACKAGE) != 0)) {
4521            mPackage = other.mPackage;
4522            changes |= FILL_IN_PACKAGE;
4523        }
4524        // Component is special: it can -only- be set if explicitly allowed,
4525        // since otherwise the sender could force the intent somewhere the
4526        // originator didn't intend.
4527        if (other.mComponent != null && (flags&FILL_IN_COMPONENT) != 0) {
4528            mComponent = other.mComponent;
4529            changes |= FILL_IN_COMPONENT;
4530        }
4531        mFlags |= other.mFlags;
4532        if (mExtras == null) {
4533            if (other.mExtras != null) {
4534                mExtras = new Bundle(other.mExtras);
4535            }
4536        } else if (other.mExtras != null) {
4537            try {
4538                Bundle newb = new Bundle(other.mExtras);
4539                newb.putAll(mExtras);
4540                mExtras = newb;
4541            } catch (RuntimeException e) {
4542                // Modifying the extras can cause us to unparcel the contents
4543                // of the bundle, and if we do this in the system process that
4544                // may fail.  We really should handle this (i.e., the Bundle
4545                // impl shouldn't be on top of a plain map), but for now just
4546                // ignore it and keep the original contents. :(
4547                Log.w("Intent", "Failure filling in extras", e);
4548            }
4549        }
4550        return changes;
4551    }
4552
4553    /**
4554     * Wrapper class holding an Intent and implementing comparisons on it for
4555     * the purpose of filtering.  The class implements its
4556     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4557     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4558     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4559     * on the wrapped Intent.
4560     */
4561    public static final class FilterComparison {
4562        private final Intent mIntent;
4563        private final int mHashCode;
4564
4565        public FilterComparison(Intent intent) {
4566            mIntent = intent;
4567            mHashCode = intent.filterHashCode();
4568        }
4569
4570        /**
4571         * Return the Intent that this FilterComparison represents.
4572         * @return Returns the Intent held by the FilterComparison.  Do
4573         * not modify!
4574         */
4575        public Intent getIntent() {
4576            return mIntent;
4577        }
4578
4579        @Override
4580        public boolean equals(Object obj) {
4581            if (obj instanceof FilterComparison) {
4582                Intent other = ((FilterComparison)obj).mIntent;
4583                return mIntent.filterEquals(other);
4584            }
4585            return false;
4586        }
4587
4588        @Override
4589        public int hashCode() {
4590            return mHashCode;
4591        }
4592    }
4593
4594    /**
4595     * Determine if two intents are the same for the purposes of intent
4596     * resolution (filtering). That is, if their action, data, type,
4597     * class, and categories are the same.  This does <em>not</em> compare
4598     * any extra data included in the intents.
4599     *
4600     * @param other The other Intent to compare against.
4601     *
4602     * @return Returns true if action, data, type, class, and categories
4603     *         are the same.
4604     */
4605    public boolean filterEquals(Intent other) {
4606        if (other == null) {
4607            return false;
4608        }
4609        if (mAction != other.mAction) {
4610            if (mAction != null) {
4611                if (!mAction.equals(other.mAction)) {
4612                    return false;
4613                }
4614            } else {
4615                if (!other.mAction.equals(mAction)) {
4616                    return false;
4617                }
4618            }
4619        }
4620        if (mData != other.mData) {
4621            if (mData != null) {
4622                if (!mData.equals(other.mData)) {
4623                    return false;
4624                }
4625            } else {
4626                if (!other.mData.equals(mData)) {
4627                    return false;
4628                }
4629            }
4630        }
4631        if (mType != other.mType) {
4632            if (mType != null) {
4633                if (!mType.equals(other.mType)) {
4634                    return false;
4635                }
4636            } else {
4637                if (!other.mType.equals(mType)) {
4638                    return false;
4639                }
4640            }
4641        }
4642        if (mPackage != other.mPackage) {
4643            if (mPackage != null) {
4644                if (!mPackage.equals(other.mPackage)) {
4645                    return false;
4646                }
4647            } else {
4648                if (!other.mPackage.equals(mPackage)) {
4649                    return false;
4650                }
4651            }
4652        }
4653        if (mComponent != other.mComponent) {
4654            if (mComponent != null) {
4655                if (!mComponent.equals(other.mComponent)) {
4656                    return false;
4657                }
4658            } else {
4659                if (!other.mComponent.equals(mComponent)) {
4660                    return false;
4661                }
4662            }
4663        }
4664        if (mCategories != other.mCategories) {
4665            if (mCategories != null) {
4666                if (!mCategories.equals(other.mCategories)) {
4667                    return false;
4668                }
4669            } else {
4670                if (!other.mCategories.equals(mCategories)) {
4671                    return false;
4672                }
4673            }
4674        }
4675
4676        return true;
4677    }
4678
4679    /**
4680     * Generate hash code that matches semantics of filterEquals().
4681     *
4682     * @return Returns the hash value of the action, data, type, class, and
4683     *         categories.
4684     *
4685     * @see #filterEquals
4686     */
4687    public int filterHashCode() {
4688        int code = 0;
4689        if (mAction != null) {
4690            code += mAction.hashCode();
4691        }
4692        if (mData != null) {
4693            code += mData.hashCode();
4694        }
4695        if (mType != null) {
4696            code += mType.hashCode();
4697        }
4698        if (mPackage != null) {
4699            code += mPackage.hashCode();
4700        }
4701        if (mComponent != null) {
4702            code += mComponent.hashCode();
4703        }
4704        if (mCategories != null) {
4705            code += mCategories.hashCode();
4706        }
4707        return code;
4708    }
4709
4710    @Override
4711    public String toString() {
4712        StringBuilder   b = new StringBuilder(128);
4713
4714        b.append("Intent { ");
4715        toShortString(b, true, true);
4716        b.append(" }");
4717
4718        return b.toString();
4719    }
4720
4721    /** @hide */
4722    public String toShortString(boolean comp, boolean extras) {
4723        StringBuilder   b = new StringBuilder(128);
4724        toShortString(b, comp, extras);
4725        return b.toString();
4726    }
4727
4728    /** @hide */
4729    public void toShortString(StringBuilder b, boolean comp, boolean extras) {
4730        boolean first = true;
4731        if (mAction != null) {
4732            b.append("act=").append(mAction);
4733            first = false;
4734        }
4735        if (mCategories != null) {
4736            if (!first) {
4737                b.append(' ');
4738            }
4739            first = false;
4740            b.append("cat=[");
4741            Iterator<String> i = mCategories.iterator();
4742            boolean didone = false;
4743            while (i.hasNext()) {
4744                if (didone) b.append(",");
4745                didone = true;
4746                b.append(i.next());
4747            }
4748            b.append("]");
4749        }
4750        if (mData != null) {
4751            if (!first) {
4752                b.append(' ');
4753            }
4754            first = false;
4755            b.append("dat=").append(mData);
4756        }
4757        if (mType != null) {
4758            if (!first) {
4759                b.append(' ');
4760            }
4761            first = false;
4762            b.append("typ=").append(mType);
4763        }
4764        if (mFlags != 0) {
4765            if (!first) {
4766                b.append(' ');
4767            }
4768            first = false;
4769            b.append("flg=0x").append(Integer.toHexString(mFlags));
4770        }
4771        if (mPackage != null) {
4772            if (!first) {
4773                b.append(' ');
4774            }
4775            first = false;
4776            b.append("pkg=").append(mPackage);
4777        }
4778        if (comp && mComponent != null) {
4779            if (!first) {
4780                b.append(' ');
4781            }
4782            first = false;
4783            b.append("cmp=").append(mComponent.flattenToShortString());
4784        }
4785        if (extras && mExtras != null) {
4786            if (!first) {
4787                b.append(' ');
4788            }
4789            first = false;
4790            b.append("(has extras)");
4791        }
4792    }
4793
4794    /**
4795     * Call {@link #toUri} with 0 flags.
4796     * @deprecated Use {@link #toUri} instead.
4797     */
4798    @Deprecated
4799    public String toURI() {
4800        return toUri(0);
4801    }
4802
4803    /**
4804     * Convert this Intent into a String holding a URI representation of it.
4805     * The returned URI string has been properly URI encoded, so it can be
4806     * used with {@link Uri#parse Uri.parse(String)}.  The URI contains the
4807     * Intent's data as the base URI, with an additional fragment describing
4808     * the action, categories, type, flags, package, component, and extras.
4809     *
4810     * <p>You can convert the returned string back to an Intent with
4811     * {@link #getIntent}.
4812     *
4813     * @param flags Additional operating flags.  Either 0 or
4814     * {@link #URI_INTENT_SCHEME}.
4815     *
4816     * @return Returns a URI encoding URI string describing the entire contents
4817     * of the Intent.
4818     */
4819    public String toUri(int flags) {
4820        StringBuilder uri = new StringBuilder(128);
4821        String scheme = null;
4822        if (mData != null) {
4823            String data = mData.toString();
4824            if ((flags&URI_INTENT_SCHEME) != 0) {
4825                final int N = data.length();
4826                for (int i=0; i<N; i++) {
4827                    char c = data.charAt(i);
4828                    if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
4829                            || c == '.' || c == '-') {
4830                        continue;
4831                    }
4832                    if (c == ':' && i > 0) {
4833                        // Valid scheme.
4834                        scheme = data.substring(0, i);
4835                        uri.append("intent:");
4836                        data = data.substring(i+1);
4837                        break;
4838                    }
4839
4840                    // No scheme.
4841                    break;
4842                }
4843            }
4844            uri.append(data);
4845
4846        } else if ((flags&URI_INTENT_SCHEME) != 0) {
4847            uri.append("intent:");
4848        }
4849
4850        uri.append("#Intent;");
4851
4852        if (scheme != null) {
4853            uri.append("scheme=").append(scheme).append(';');
4854        }
4855        if (mAction != null) {
4856            uri.append("action=").append(Uri.encode(mAction)).append(';');
4857        }
4858        if (mCategories != null) {
4859            for (String category : mCategories) {
4860                uri.append("category=").append(Uri.encode(category)).append(';');
4861            }
4862        }
4863        if (mType != null) {
4864            uri.append("type=").append(Uri.encode(mType, "/")).append(';');
4865        }
4866        if (mFlags != 0) {
4867            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4868        }
4869        if (mPackage != null) {
4870            uri.append("package=").append(Uri.encode(mPackage)).append(';');
4871        }
4872        if (mComponent != null) {
4873            uri.append("component=").append(Uri.encode(
4874                    mComponent.flattenToShortString(), "/")).append(';');
4875        }
4876        if (mExtras != null) {
4877            for (String key : mExtras.keySet()) {
4878                final Object value = mExtras.get(key);
4879                char entryType =
4880                        value instanceof String    ? 'S' :
4881                        value instanceof Boolean   ? 'B' :
4882                        value instanceof Byte      ? 'b' :
4883                        value instanceof Character ? 'c' :
4884                        value instanceof Double    ? 'd' :
4885                        value instanceof Float     ? 'f' :
4886                        value instanceof Integer   ? 'i' :
4887                        value instanceof Long      ? 'l' :
4888                        value instanceof Short     ? 's' :
4889                        '\0';
4890
4891                if (entryType != '\0') {
4892                    uri.append(entryType);
4893                    uri.append('.');
4894                    uri.append(Uri.encode(key));
4895                    uri.append('=');
4896                    uri.append(Uri.encode(value.toString()));
4897                    uri.append(';');
4898                }
4899            }
4900        }
4901
4902        uri.append("end");
4903
4904        return uri.toString();
4905    }
4906
4907    public int describeContents() {
4908        return (mExtras != null) ? mExtras.describeContents() : 0;
4909    }
4910
4911    public void writeToParcel(Parcel out, int flags) {
4912        out.writeString(mAction);
4913        Uri.writeToParcel(out, mData);
4914        out.writeString(mType);
4915        out.writeInt(mFlags);
4916        out.writeString(mPackage);
4917        ComponentName.writeToParcel(mComponent, out);
4918
4919        if (mCategories != null) {
4920            out.writeInt(mCategories.size());
4921            for (String category : mCategories) {
4922                out.writeString(category);
4923            }
4924        } else {
4925            out.writeInt(0);
4926        }
4927
4928        out.writeBundle(mExtras);
4929    }
4930
4931    public static final Parcelable.Creator<Intent> CREATOR
4932            = new Parcelable.Creator<Intent>() {
4933        public Intent createFromParcel(Parcel in) {
4934            return new Intent(in);
4935        }
4936        public Intent[] newArray(int size) {
4937            return new Intent[size];
4938        }
4939    };
4940
4941    private Intent(Parcel in) {
4942        readFromParcel(in);
4943    }
4944
4945    public void readFromParcel(Parcel in) {
4946        mAction = in.readString();
4947        mData = Uri.CREATOR.createFromParcel(in);
4948        mType = in.readString();
4949        mFlags = in.readInt();
4950        mPackage = in.readString();
4951        mComponent = ComponentName.readFromParcel(in);
4952
4953        int N = in.readInt();
4954        if (N > 0) {
4955            mCategories = new HashSet<String>();
4956            int i;
4957            for (i=0; i<N; i++) {
4958                mCategories.add(in.readString());
4959            }
4960        } else {
4961            mCategories = null;
4962        }
4963
4964        mExtras = in.readBundle();
4965    }
4966
4967    /**
4968     * Parses the "intent" element (and its children) from XML and instantiates
4969     * an Intent object.  The given XML parser should be located at the tag
4970     * where parsing should start (often named "intent"), from which the
4971     * basic action, data, type, and package and class name will be
4972     * retrieved.  The function will then parse in to any child elements,
4973     * looking for <category android:name="xxx"> tags to add categories and
4974     * <extra android:name="xxx" android:value="yyy"> to attach extra data
4975     * to the intent.
4976     *
4977     * @param resources The Resources to use when inflating resources.
4978     * @param parser The XML parser pointing at an "intent" tag.
4979     * @param attrs The AttributeSet interface for retrieving extended
4980     * attribute data at the current <var>parser</var> location.
4981     * @return An Intent object matching the XML data.
4982     * @throws XmlPullParserException If there was an XML parsing error.
4983     * @throws IOException If there was an I/O error.
4984     */
4985    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
4986            throws XmlPullParserException, IOException {
4987        Intent intent = new Intent();
4988
4989        TypedArray sa = resources.obtainAttributes(attrs,
4990                com.android.internal.R.styleable.Intent);
4991
4992        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
4993
4994        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
4995        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
4996        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
4997
4998        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
4999        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
5000        if (packageName != null && className != null) {
5001            intent.setComponent(new ComponentName(packageName, className));
5002        }
5003
5004        sa.recycle();
5005
5006        int outerDepth = parser.getDepth();
5007        int type;
5008        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
5009               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
5010            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
5011                continue;
5012            }
5013
5014            String nodeName = parser.getName();
5015            if (nodeName.equals("category")) {
5016                sa = resources.obtainAttributes(attrs,
5017                        com.android.internal.R.styleable.IntentCategory);
5018                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
5019                sa.recycle();
5020
5021                if (cat != null) {
5022                    intent.addCategory(cat);
5023                }
5024                XmlUtils.skipCurrentTag(parser);
5025
5026            } else if (nodeName.equals("extra")) {
5027                if (intent.mExtras == null) {
5028                    intent.mExtras = new Bundle();
5029                }
5030                resources.parseBundleExtra("extra", attrs, intent.mExtras);
5031                XmlUtils.skipCurrentTag(parser);
5032
5033            } else {
5034                XmlUtils.skipCurrentTag(parser);
5035            }
5036        }
5037
5038        return intent;
5039    }
5040}
5041