Intent.java revision 4554f30c834723db6946400bf1827be4419a3134
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.content;
18
19import org.xmlpull.v1.XmlPullParser;
20import org.xmlpull.v1.XmlPullParserException;
21
22import android.annotation.SdkConstant;
23import android.annotation.SdkConstant.SdkConstantType;
24import android.content.pm.ActivityInfo;
25import android.content.pm.PackageManager;
26import android.content.pm.ResolveInfo;
27import android.content.res.Resources;
28import android.content.res.TypedArray;
29import android.net.Uri;
30import android.os.Bundle;
31import android.os.IBinder;
32import android.os.Parcel;
33import android.os.Parcelable;
34import android.util.AttributeSet;
35import android.util.Log;
36import com.android.internal.util.XmlUtils;
37
38import java.io.IOException;
39import java.io.Serializable;
40import java.net.URISyntaxException;
41import java.util.ArrayList;
42import java.util.HashSet;
43import java.util.Iterator;
44import java.util.Set;
45
46/**
47 * An intent is an abstract description of an operation to be performed.  It
48 * can be used with {@link Context#startActivity(Intent) startActivity} to
49 * launch an {@link android.app.Activity},
50 * {@link android.content.Context#sendBroadcast(Intent) broadcastIntent} to
51 * send it to any interested {@link BroadcastReceiver BroadcastReceiver} components,
52 * and {@link android.content.Context#startService} or
53 * {@link android.content.Context#bindService} to communicate with a
54 * background {@link android.app.Service}.
55 *
56 * <p>An Intent provides a facility for performing late runtime binding between
57 * the code in different applications.  Its most significant use is in the
58 * launching of activities, where it can be thought of as the glue between
59 * activities. It is
60 * basically a passive data structure holding an abstract description of an
61 * action to be performed. The primary pieces of information in an intent
62 * are:</p>
63 *
64 * <ul>
65 *   <li> <p><b>action</b> -- The general action to be performed, such as
66 *     {@link #ACTION_VIEW}, {@link #ACTION_EDIT}, {@link #ACTION_MAIN},
67 *     etc.</p>
68 *   </li>
69 *   <li> <p><b>data</b> -- The data to operate on, such as a person record
70 *     in the contacts database, expressed as a {@link android.net.Uri}.</p>
71 *   </li>
72 * </ul>
73 *
74 *
75 * <p>Some examples of action/data pairs are:</p>
76 *
77 * <ul>
78 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/1</i></b> -- Display
79 *     information about the person whose identifier is "1".</p>
80 *   </li>
81 *   <li> <p><b>{@link #ACTION_DIAL} <i>content://contacts/1</i></b> -- Display
82 *     the phone dialer with the person filled in.</p>
83 *   </li>
84 *   <li> <p><b>{@link #ACTION_VIEW} <i>tel:123</i></b> -- Display
85 *     the phone dialer with the given number filled in.  Note how the
86 *     VIEW action does what what is considered the most reasonable thing for
87 *     a particular URI.</p>
88 *   </li>
89 *   <li> <p><b>{@link #ACTION_DIAL} <i>tel:123</i></b> -- Display
90 *     the phone dialer with the given number filled in.</p>
91 *   </li>
92 *   <li> <p><b>{@link #ACTION_EDIT} <i>content://contacts/1</i></b> -- Edit
93 *     information about the person whose identifier is "1".</p>
94 *   </li>
95 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/</i></b> -- Display
96 *     a list of people, which the user can browse through.  This example is a
97 *     typical top-level entry into the Contacts application, showing you the
98 *     list of people. Selecting a particular person to view would result in a
99 *     new intent { <b>{@link #ACTION_VIEW} <i>content://contacts/N</i></b> }
100 *     being used to start an activity to display that person.</p>
101 *   </li>
102 * </ul>
103 *
104 * <p>In addition to these primary attributes, there are a number of secondary
105 * attributes that you can also include with an intent:</p>
106 *
107 * <ul>
108 *     <li> <p><b>category</b> -- Gives additional information about the action
109 *         to execute.  For example, {@link #CATEGORY_LAUNCHER} means it should
110 *         appear in the Launcher as a top-level application, while
111 *         {@link #CATEGORY_ALTERNATIVE} means it should be included in a list
112 *         of alternative actions the user can perform on a piece of data.</p>
113 *     <li> <p><b>type</b> -- Specifies an explicit type (a MIME type) of the
114 *         intent data.  Normally the type is inferred from the data itself.
115 *         By setting this attribute, you disable that evaluation and force
116 *         an explicit type.</p>
117 *     <li> <p><b>component</b> -- Specifies an explicit name of a component
118 *         class to use for the intent.  Normally this is determined by looking
119 *         at the other information in the intent (the action, data/type, and
120 *         categories) and matching that with a component that can handle it.
121 *         If this attribute is set then none of the evaluation is performed,
122 *         and this component is used exactly as is.  By specifying this attribute,
123 *         all of the other Intent attributes become optional.</p>
124 *     <li> <p><b>extras</b> -- This is a {@link Bundle} of any additional information.
125 *         This can be used to provide extended information to the component.
126 *         For example, if we have a action to send an e-mail message, we could
127 *         also include extra pieces of data here to supply a subject, body,
128 *         etc.</p>
129 * </ul>
130 *
131 * <p>Here are some examples of other operations you can specify as intents
132 * using these additional parameters:</p>
133 *
134 * <ul>
135 *   <li> <p><b>{@link #ACTION_MAIN} with category {@link #CATEGORY_HOME}</b> --
136 *     Launch the home screen.</p>
137 *   </li>
138 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
139 *     <i>{@link android.provider.Contacts.Phones#CONTENT_URI
140 *     vnd.android.cursor.item/phone}</i></b>
141 *     -- Display the list of people's phone numbers, allowing the user to
142 *     browse through them and pick one and return it to the parent activity.</p>
143 *   </li>
144 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
145 *     <i>*{@literal /}*</i> and category {@link #CATEGORY_OPENABLE}</b>
146 *     -- Display all pickers for data that can be opened with
147 *     {@link ContentResolver#openInputStream(Uri) ContentResolver.openInputStream()},
148 *     allowing the user to pick one of them and then some data inside of it
149 *     and returning the resulting URI to the caller.  This can be used,
150 *     for example, in an e-mail application to allow the user to pick some
151 *     data to include as an attachment.</p>
152 *   </li>
153 * </ul>
154 *
155 * <p>There are a variety of standard Intent action and category constants
156 * defined in the Intent class, but applications can also define their own.
157 * These strings use java style scoping, to ensure they are unique -- for
158 * example, the standard {@link #ACTION_VIEW} is called
159 * "android.app.action.VIEW".</p>
160 *
161 * <p>Put together, the set of actions, data types, categories, and extra data
162 * defines a language for the system allowing for the expression of phrases
163 * such as "call john smith's cell".  As applications are added to the system,
164 * they can extend this language by adding new actions, types, and categories, or
165 * they can modify the behavior of existing phrases by supplying their own
166 * activities that handle them.</p>
167 *
168 * <a name="IntentResolution"></a>
169 * <h3>Intent Resolution</h3>
170 *
171 * <p>There are two primary forms of intents you will use.
172 *
173 * <ul>
174 *     <li> <p><b>Explicit Intents</b> have specified a component (via
175 *     {@link #setComponent} or {@link #setClass}), which provides the exact
176 *     class to be run.  Often these will not include any other information,
177 *     simply being a way for an application to launch various internal
178 *     activities it has as the user interacts with the application.
179 *
180 *     <li> <p><b>Implicit Intents</b> have not specified a component;
181 *     instead, they must include enough information for the system to
182 *     determine which of the available components is best to run for that
183 *     intent.
184 * </ul>
185 *
186 * <p>When using implicit intents, given such an arbitrary intent we need to
187 * know what to do with it. This is handled by the process of <em>Intent
188 * resolution</em>, which maps an Intent to an {@link android.app.Activity},
189 * {@link BroadcastReceiver}, or {@link android.app.Service} (or sometimes two or
190 * more activities/receivers) that can handle it.</p>
191 *
192 * <p>The intent resolution mechanism basically revolves around matching an
193 * Intent against all of the &lt;intent-filter&gt; descriptions in the
194 * installed application packages.  (Plus, in the case of broadcasts, any {@link BroadcastReceiver}
195 * objects explicitly registered with {@link Context#registerReceiver}.)  More
196 * details on this can be found in the documentation on the {@link
197 * IntentFilter} class.</p>
198 *
199 * <p>There are three pieces of information in the Intent that are used for
200 * resolution: the action, type, and category.  Using this information, a query
201 * is done on the {@link PackageManager} for a component that can handle the
202 * intent. The appropriate component is determined based on the intent
203 * information supplied in the <code>AndroidManifest.xml</code> file as
204 * follows:</p>
205 *
206 * <ul>
207 *     <li> <p>The <b>action</b>, if given, must be listed by the component as
208 *         one it handles.</p>
209 *     <li> <p>The <b>type</b> is retrieved from the Intent's data, if not
210 *         already supplied in the Intent.  Like the action, if a type is
211 *         included in the intent (either explicitly or implicitly in its
212 *         data), then this must be listed by the component as one it handles.</p>
213 *     <li> For data that is not a <code>content:</code> URI and where no explicit
214 *         type is included in the Intent, instead the <b>scheme</b> of the
215 *         intent data (such as <code>http:</code> or <code>mailto:</code>) is
216 *         considered. Again like the action, if we are matching a scheme it
217 *         must be listed by the component as one it can handle.
218 *     <li> <p>The <b>categories</b>, if supplied, must <em>all</em> be listed
219 *         by the activity as categories it handles.  That is, if you include
220 *         the categories {@link #CATEGORY_LAUNCHER} and
221 *         {@link #CATEGORY_ALTERNATIVE}, then you will only resolve to components
222 *         with an intent that lists <em>both</em> of those categories.
223 *         Activities will very often need to support the
224 *         {@link #CATEGORY_DEFAULT} so that they can be found by
225 *         {@link Context#startActivity Context.startActivity()}.</p>
226 * </ul>
227 *
228 * <p>For example, consider the Note Pad sample application that
229 * allows user to browse through a list of notes data and view details about
230 * individual items.  Text in italics indicate places were you would replace a
231 * name with one specific to your own package.</p>
232 *
233 * <pre> &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
234 *       package="<i>com.android.notepad</i>"&gt;
235 *     &lt;application android:icon="@drawable/app_notes"
236 *             android:label="@string/app_name"&gt;
237 *
238 *         &lt;provider class=".NotePadProvider"
239 *                 android:authorities="<i>com.google.provider.NotePad</i>" /&gt;
240 *
241 *         &lt;activity class=".NotesList" android:label="@string/title_notes_list"&gt;
242 *             &lt;intent-filter&gt;
243 *                 &lt;action android:name="android.intent.action.MAIN" /&gt;
244 *                 &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
245 *             &lt;/intent-filter&gt;
246 *             &lt;intent-filter&gt;
247 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
248 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
249 *                 &lt;action android:name="android.intent.action.PICK" /&gt;
250 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
251 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
252 *             &lt;/intent-filter&gt;
253 *             &lt;intent-filter&gt;
254 *                 &lt;action android:name="android.intent.action.GET_CONTENT" /&gt;
255 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
256 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
257 *             &lt;/intent-filter&gt;
258 *         &lt;/activity&gt;
259 *
260 *         &lt;activity class=".NoteEditor" android:label="@string/title_note"&gt;
261 *             &lt;intent-filter android:label="@string/resolve_edit"&gt;
262 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
263 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
264 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
265 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
266 *             &lt;/intent-filter&gt;
267 *
268 *             &lt;intent-filter&gt;
269 *                 &lt;action android:name="android.intent.action.INSERT" /&gt;
270 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
271 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
272 *             &lt;/intent-filter&gt;
273 *
274 *         &lt;/activity&gt;
275 *
276 *         &lt;activity class=".TitleEditor" android:label="@string/title_edit_title"
277 *                 android:theme="@android:style/Theme.Dialog"&gt;
278 *             &lt;intent-filter android:label="@string/resolve_title"&gt;
279 *                 &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
280 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
281 *                 &lt;category android:name="android.intent.category.ALTERNATIVE" /&gt;
282 *                 &lt;category android:name="android.intent.category.SELECTED_ALTERNATIVE" /&gt;
283 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
284 *             &lt;/intent-filter&gt;
285 *         &lt;/activity&gt;
286 *
287 *     &lt;/application&gt;
288 * &lt;/manifest&gt;</pre>
289 *
290 * <p>The first activity,
291 * <code>com.android.notepad.NotesList</code>, serves as our main
292 * entry into the app.  It can do three things as described by its three intent
293 * templates:
294 * <ol>
295 * <li><pre>
296 * &lt;intent-filter&gt;
297 *     &lt;action android:name="{@link #ACTION_MAIN android.intent.action.MAIN}" /&gt;
298 *     &lt;category android:name="{@link #CATEGORY_LAUNCHER android.intent.category.LAUNCHER}" /&gt;
299 * &lt;/intent-filter&gt;</pre>
300 * <p>This provides a top-level entry into the NotePad application: the standard
301 * MAIN action is a main entry point (not requiring any other information in
302 * the Intent), and the LAUNCHER category says that this entry point should be
303 * listed in the application launcher.</p>
304 * <li><pre>
305 * &lt;intent-filter&gt;
306 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
307 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
308 *     &lt;action android:name="{@link #ACTION_PICK android.intent.action.PICK}" /&gt;
309 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
310 *     &lt;data mimeType:name="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
311 * &lt;/intent-filter&gt;</pre>
312 * <p>This declares the things that the activity can do on a directory of
313 * notes.  The type being supported is given with the &lt;type&gt; tag, where
314 * <code>vnd.android.cursor.dir/vnd.google.note</code> is a URI from which
315 * a Cursor of zero or more items (<code>vnd.android.cursor.dir</code>) can
316 * be retrieved which holds our note pad data (<code>vnd.google.note</code>).
317 * The activity allows the user to view or edit the directory of data (via
318 * the VIEW and EDIT actions), or to pick a particular note and return it
319 * to the caller (via the PICK action).  Note also the DEFAULT category
320 * supplied here: this is <em>required</em> for the
321 * {@link Context#startActivity Context.startActivity} method to resolve your
322 * activity when its component name is not explicitly specified.</p>
323 * <li><pre>
324 * &lt;intent-filter&gt;
325 *     &lt;action android:name="{@link #ACTION_GET_CONTENT android.intent.action.GET_CONTENT}" /&gt;
326 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
327 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
328 * &lt;/intent-filter&gt;</pre>
329 * <p>This filter describes the ability return to the caller a note selected by
330 * the user without needing to know where it came from.  The data type
331 * <code>vnd.android.cursor.item/vnd.google.note</code> is a URI from which
332 * a Cursor of exactly one (<code>vnd.android.cursor.item</code>) item can
333 * be retrieved which contains our note pad data (<code>vnd.google.note</code>).
334 * The GET_CONTENT action is similar to the PICK action, where the activity
335 * will return to its caller a piece of data selected by the user.  Here,
336 * however, the caller specifies the type of data they desire instead of
337 * the type of data the user will be picking from.</p>
338 * </ol>
339 *
340 * <p>Given these capabilities, the following intents will resolve to the
341 * NotesList activity:</p>
342 *
343 * <ul>
344 *     <li> <p><b>{ action=android.app.action.MAIN }</b> matches all of the
345 *         activities that can be used as top-level entry points into an
346 *         application.</p>
347 *     <li> <p><b>{ action=android.app.action.MAIN,
348 *         category=android.app.category.LAUNCHER }</b> is the actual intent
349 *         used by the Launcher to populate its top-level list.</p>
350 *     <li> <p><b>{ action=android.app.action.VIEW
351 *          data=content://com.google.provider.NotePad/notes }</b>
352 *         displays a list of all the notes under
353 *         "content://com.google.provider.NotePad/notes", which
354 *         the user can browse through and see the details on.</p>
355 *     <li> <p><b>{ action=android.app.action.PICK
356 *          data=content://com.google.provider.NotePad/notes }</b>
357 *         provides a list of the notes under
358 *         "content://com.google.provider.NotePad/notes", from which
359 *         the user can pick a note whose data URL is returned back to the caller.</p>
360 *     <li> <p><b>{ action=android.app.action.GET_CONTENT
361 *          type=vnd.android.cursor.item/vnd.google.note }</b>
362 *         is similar to the pick action, but allows the caller to specify the
363 *         kind of data they want back so that the system can find the appropriate
364 *         activity to pick something of that data type.</p>
365 * </ul>
366 *
367 * <p>The second activity,
368 * <code>com.android.notepad.NoteEditor</code>, shows the user a single
369 * note entry and allows them to edit it.  It can do two things as described
370 * by its two intent templates:
371 * <ol>
372 * <li><pre>
373 * &lt;intent-filter android:label="@string/resolve_edit"&gt;
374 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
375 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
376 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
377 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
378 * &lt;/intent-filter&gt;</pre>
379 * <p>The first, primary, purpose of this activity is to let the user interact
380 * with a single note, as decribed by the MIME type
381 * <code>vnd.android.cursor.item/vnd.google.note</code>.  The activity can
382 * either VIEW a note or allow the user to EDIT it.  Again we support the
383 * DEFAULT category to allow the activity to be launched without explicitly
384 * specifying its component.</p>
385 * <li><pre>
386 * &lt;intent-filter&gt;
387 *     &lt;action android:name="{@link #ACTION_INSERT android.intent.action.INSERT}" /&gt;
388 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
389 *     &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
390 * &lt;/intent-filter&gt;</pre>
391 * <p>The secondary use of this activity is to insert a new note entry into
392 * an existing directory of notes.  This is used when the user creates a new
393 * note: the INSERT action is executed on the directory of notes, causing
394 * this activity to run and have the user create the new note data which
395 * it then adds to the content provider.</p>
396 * </ol>
397 *
398 * <p>Given these capabilities, the following intents will resolve to the
399 * NoteEditor activity:</p>
400 *
401 * <ul>
402 *     <li> <p><b>{ action=android.app.action.VIEW
403 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
404 *         shows the user the content of note <var>{ID}</var>.</p>
405 *     <li> <p><b>{ action=android.app.action.EDIT
406 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
407 *         allows the user to edit the content of note <var>{ID}</var>.</p>
408 *     <li> <p><b>{ action=android.app.action.INSERT
409 *          data=content://com.google.provider.NotePad/notes }</b>
410 *         creates a new, empty note in the notes list at
411 *         "content://com.google.provider.NotePad/notes"
412 *         and allows the user to edit it.  If they keep their changes, the URI
413 *         of the newly created note is returned to the caller.</p>
414 * </ul>
415 *
416 * <p>The last activity,
417 * <code>com.android.notepad.TitleEditor</code>, allows the user to
418 * edit the title of a note.  This could be implemented as a class that the
419 * application directly invokes (by explicitly setting its component in
420 * the Intent), but here we show a way you can publish alternative
421 * operations on existing data:</p>
422 *
423 * <pre>
424 * &lt;intent-filter android:label="@string/resolve_title"&gt;
425 *     &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
426 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
427 *     &lt;category android:name="{@link #CATEGORY_ALTERNATIVE android.intent.category.ALTERNATIVE}" /&gt;
428 *     &lt;category android:name="{@link #CATEGORY_SELECTED_ALTERNATIVE android.intent.category.SELECTED_ALTERNATIVE}" /&gt;
429 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
430 * &lt;/intent-filter&gt;</pre>
431 *
432 * <p>In the single intent template here, we
433 * have created our own private action called
434 * <code>com.android.notepad.action.EDIT_TITLE</code> which means to
435 * edit the title of a note.  It must be invoked on a specific note
436 * (data type <code>vnd.android.cursor.item/vnd.google.note</code>) like the previous
437 * view and edit actions, but here displays and edits the title contained
438 * in the note data.
439 *
440 * <p>In addition to supporting the default category as usual, our title editor
441 * also supports two other standard categories: ALTERNATIVE and
442 * SELECTED_ALTERNATIVE.  Implementing
443 * these categories allows others to find the special action it provides
444 * without directly knowing about it, through the
445 * {@link android.content.pm.PackageManager#queryIntentActivityOptions} method, or
446 * more often to build dynamic menu items with
447 * {@link android.view.Menu#addIntentOptions}.  Note that in the intent
448 * template here was also supply an explicit name for the template
449 * (via <code>android:label="@string/resolve_title"</code>) to better control
450 * what the user sees when presented with this activity as an alternative
451 * action to the data they are viewing.
452 *
453 * <p>Given these capabilities, the following intent will resolve to the
454 * TitleEditor activity:</p>
455 *
456 * <ul>
457 *     <li> <p><b>{ action=com.android.notepad.action.EDIT_TITLE
458 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
459 *         displays and allows the user to edit the title associated
460 *         with note <var>{ID}</var>.</p>
461 * </ul>
462 *
463 * <h3>Standard Activity Actions</h3>
464 *
465 * <p>These are the current standard actions that Intent defines for launching
466 * activities (usually through {@link Context#startActivity}.  The most
467 * important, and by far most frequently used, are {@link #ACTION_MAIN} and
468 * {@link #ACTION_EDIT}.
469 *
470 * <ul>
471 *     <li> {@link #ACTION_MAIN}
472 *     <li> {@link #ACTION_VIEW}
473 *     <li> {@link #ACTION_ATTACH_DATA}
474 *     <li> {@link #ACTION_EDIT}
475 *     <li> {@link #ACTION_PICK}
476 *     <li> {@link #ACTION_CHOOSER}
477 *     <li> {@link #ACTION_GET_CONTENT}
478 *     <li> {@link #ACTION_DIAL}
479 *     <li> {@link #ACTION_CALL}
480 *     <li> {@link #ACTION_SEND}
481 *     <li> {@link #ACTION_SENDTO}
482 *     <li> {@link #ACTION_ANSWER}
483 *     <li> {@link #ACTION_INSERT}
484 *     <li> {@link #ACTION_DELETE}
485 *     <li> {@link #ACTION_RUN}
486 *     <li> {@link #ACTION_SYNC}
487 *     <li> {@link #ACTION_PICK_ACTIVITY}
488 *     <li> {@link #ACTION_SEARCH}
489 *     <li> {@link #ACTION_WEB_SEARCH}
490 *     <li> {@link #ACTION_FACTORY_TEST}
491 * </ul>
492 *
493 * <h3>Standard Broadcast Actions</h3>
494 *
495 * <p>These are the current standard actions that Intent defines for receiving
496 * broadcasts (usually through {@link Context#registerReceiver} or a
497 * &lt;receiver&gt; tag in a manifest).
498 *
499 * <ul>
500 *     <li> {@link #ACTION_TIME_TICK}
501 *     <li> {@link #ACTION_TIME_CHANGED}
502 *     <li> {@link #ACTION_TIMEZONE_CHANGED}
503 *     <li> {@link #ACTION_BOOT_COMPLETED}
504 *     <li> {@link #ACTION_PACKAGE_ADDED}
505 *     <li> {@link #ACTION_PACKAGE_CHANGED}
506 *     <li> {@link #ACTION_PACKAGE_REMOVED}
507 *     <li> {@link #ACTION_PACKAGE_RESTARTED}
508 *     <li> {@link #ACTION_PACKAGE_DATA_CLEARED}
509 *     <li> {@link #ACTION_UID_REMOVED}
510 *     <li> {@link #ACTION_BATTERY_CHANGED}
511 *     <li> {@link #ACTION_POWER_CONNECTED}
512 *     <li> {@link #ACTION_POWER_DISCONNECTED}
513 *     <li> {@link #ACTION_SHUTDOWN}
514 * </ul>
515 *
516 * <h3>Standard Categories</h3>
517 *
518 * <p>These are the current standard categories that can be used to further
519 * clarify an Intent via {@link #addCategory}.
520 *
521 * <ul>
522 *     <li> {@link #CATEGORY_DEFAULT}
523 *     <li> {@link #CATEGORY_BROWSABLE}
524 *     <li> {@link #CATEGORY_TAB}
525 *     <li> {@link #CATEGORY_ALTERNATIVE}
526 *     <li> {@link #CATEGORY_SELECTED_ALTERNATIVE}
527 *     <li> {@link #CATEGORY_LAUNCHER}
528 *     <li> {@link #CATEGORY_INFO}
529 *     <li> {@link #CATEGORY_HOME}
530 *     <li> {@link #CATEGORY_PREFERENCE}
531 *     <li> {@link #CATEGORY_TEST}
532 * </ul>
533 *
534 * <h3>Standard Extra Data</h3>
535 *
536 * <p>These are the current standard fields that can be used as extra data via
537 * {@link #putExtra}.
538 *
539 * <ul>
540 *     <li> {@link #EXTRA_TEMPLATE}
541 *     <li> {@link #EXTRA_INTENT}
542 *     <li> {@link #EXTRA_STREAM}
543 *     <li> {@link #EXTRA_TEXT}
544 * </ul>
545 *
546 * <h3>Flags</h3>
547 *
548 * <p>These are the possible flags that can be used in the Intent via
549 * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
550 * of all possible flags.
551 */
552public class Intent implements Parcelable {
553    // ---------------------------------------------------------------------
554    // ---------------------------------------------------------------------
555    // Standard intent activity actions (see action variable).
556
557    /**
558     *  Activity Action: Start as a main entry point, does not expect to
559     *  receive data.
560     *  <p>Input: nothing
561     *  <p>Output: nothing
562     */
563    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
564    public static final String ACTION_MAIN = "android.intent.action.MAIN";
565
566    /**
567     * Activity Action: Display the data to the user.  This is the most common
568     * action performed on data -- it is the generic action you can use on
569     * a piece of data to get the most reasonable thing to occur.  For example,
570     * when used on a contacts entry it will view the entry; when used on a
571     * mailto: URI it will bring up a compose window filled with the information
572     * supplied by the URI; when used with a tel: URI it will invoke the
573     * dialer.
574     * <p>Input: {@link #getData} is URI from which to retrieve data.
575     * <p>Output: nothing.
576     */
577    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
578    public static final String ACTION_VIEW = "android.intent.action.VIEW";
579
580    /**
581     * A synonym for {@link #ACTION_VIEW}, the "standard" action that is
582     * performed on a piece of data.
583     */
584    public static final String ACTION_DEFAULT = ACTION_VIEW;
585
586    /**
587     * Used to indicate that some piece of data should be attached to some other
588     * place.  For example, image data could be attached to a contact.  It is up
589     * to the recipient to decide where the data should be attached; the intent
590     * does not specify the ultimate destination.
591     * <p>Input: {@link #getData} is URI of data to be attached.
592     * <p>Output: nothing.
593     */
594    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
595    public static final String ACTION_ATTACH_DATA = "android.intent.action.ATTACH_DATA";
596
597    /**
598     * Activity Action: Provide explicit editable access to the given data.
599     * <p>Input: {@link #getData} is URI of data to be edited.
600     * <p>Output: nothing.
601     */
602    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
603    public static final String ACTION_EDIT = "android.intent.action.EDIT";
604
605    /**
606     * Activity Action: Pick an existing item, or insert a new item, and then edit it.
607     * <p>Input: {@link #getType} is the desired MIME type of the item to create or edit.
608     * The extras can contain type specific data to pass through to the editing/creating
609     * activity.
610     * <p>Output: The URI of the item that was picked.  This must be a content:
611     * URI so that any receiver can access it.
612     */
613    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
614    public static final String ACTION_INSERT_OR_EDIT = "android.intent.action.INSERT_OR_EDIT";
615
616    /**
617     * Activity Action: Pick an item from the data, returning what was selected.
618     * <p>Input: {@link #getData} is URI containing a directory of data
619     * (vnd.android.cursor.dir/*) from which to pick an item.
620     * <p>Output: The URI of the item that was picked.
621     */
622    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
623    public static final String ACTION_PICK = "android.intent.action.PICK";
624
625    /**
626     * Activity Action: Creates a shortcut.
627     * <p>Input: Nothing.</p>
628     * <p>Output: An Intent representing the shortcut. The intent must contain three
629     * extras: SHORTCUT_INTENT (value: Intent), SHORTCUT_NAME (value: String),
630     * and SHORTCUT_ICON (value: Bitmap) or SHORTCUT_ICON_RESOURCE
631     * (value: ShortcutIconResource).</p>
632     *
633     * @see #EXTRA_SHORTCUT_INTENT
634     * @see #EXTRA_SHORTCUT_NAME
635     * @see #EXTRA_SHORTCUT_ICON
636     * @see #EXTRA_SHORTCUT_ICON_RESOURCE
637     * @see android.content.Intent.ShortcutIconResource
638     */
639    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
640    public static final String ACTION_CREATE_SHORTCUT = "android.intent.action.CREATE_SHORTCUT";
641
642    /**
643     * The name of the extra used to define the Intent of a shortcut.
644     *
645     * @see #ACTION_CREATE_SHORTCUT
646     */
647    public static final String EXTRA_SHORTCUT_INTENT = "android.intent.extra.shortcut.INTENT";
648    /**
649     * The name of the extra used to define the name of a shortcut.
650     *
651     * @see #ACTION_CREATE_SHORTCUT
652     */
653    public static final String EXTRA_SHORTCUT_NAME = "android.intent.extra.shortcut.NAME";
654    /**
655     * The name of the extra used to define the icon, as a Bitmap, of a shortcut.
656     *
657     * @see #ACTION_CREATE_SHORTCUT
658     */
659    public static final String EXTRA_SHORTCUT_ICON = "android.intent.extra.shortcut.ICON";
660    /**
661     * The name of the extra used to define the icon, as a ShortcutIconResource, of a shortcut.
662     *
663     * @see #ACTION_CREATE_SHORTCUT
664     * @see android.content.Intent.ShortcutIconResource
665     */
666    public static final String EXTRA_SHORTCUT_ICON_RESOURCE =
667            "android.intent.extra.shortcut.ICON_RESOURCE";
668
669    /**
670     * Represents a shortcut/live folder icon resource.
671     *
672     * @see Intent#ACTION_CREATE_SHORTCUT
673     * @see Intent#EXTRA_SHORTCUT_ICON_RESOURCE
674     * @see android.provider.LiveFolders#ACTION_CREATE_LIVE_FOLDER
675     * @see android.provider.LiveFolders#EXTRA_LIVE_FOLDER_ICON
676     */
677    public static class ShortcutIconResource implements Parcelable {
678        /**
679         * The package name of the application containing the icon.
680         */
681        public String packageName;
682
683        /**
684         * The resource name of the icon, including package, name and type.
685         */
686        public String resourceName;
687
688        /**
689         * Creates a new ShortcutIconResource for the specified context and resource
690         * identifier.
691         *
692         * @param context The context of the application.
693         * @param resourceId The resource idenfitier for the icon.
694         * @return A new ShortcutIconResource with the specified's context package name
695         *         and icon resource idenfitier.
696         */
697        public static ShortcutIconResource fromContext(Context context, int resourceId) {
698            ShortcutIconResource icon = new ShortcutIconResource();
699            icon.packageName = context.getPackageName();
700            icon.resourceName = context.getResources().getResourceName(resourceId);
701            return icon;
702        }
703
704        /**
705         * Used to read a ShortcutIconResource from a Parcel.
706         */
707        public static final Parcelable.Creator<ShortcutIconResource> CREATOR =
708            new Parcelable.Creator<ShortcutIconResource>() {
709
710                public ShortcutIconResource createFromParcel(Parcel source) {
711                    ShortcutIconResource icon = new ShortcutIconResource();
712                    icon.packageName = source.readString();
713                    icon.resourceName = source.readString();
714                    return icon;
715                }
716
717                public ShortcutIconResource[] newArray(int size) {
718                    return new ShortcutIconResource[size];
719                }
720            };
721
722        /**
723         * No special parcel contents.
724         */
725        public int describeContents() {
726            return 0;
727        }
728
729        public void writeToParcel(Parcel dest, int flags) {
730            dest.writeString(packageName);
731            dest.writeString(resourceName);
732        }
733
734        @Override
735        public String toString() {
736            return resourceName;
737        }
738    }
739
740    /**
741     * Activity Action: Display an activity chooser, allowing the user to pick
742     * what they want to before proceeding.  This can be used as an alternative
743     * to the standard activity picker that is displayed by the system when
744     * you try to start an activity with multiple possible matches, with these
745     * differences in behavior:
746     * <ul>
747     * <li>You can specify the title that will appear in the activity chooser.
748     * <li>The user does not have the option to make one of the matching
749     * activities a preferred activity, and all possible activities will
750     * always be shown even if one of them is currently marked as the
751     * preferred activity.
752     * </ul>
753     * <p>
754     * This action should be used when the user will naturally expect to
755     * select an activity in order to proceed.  An example if when not to use
756     * it is when the user clicks on a "mailto:" link.  They would naturally
757     * expect to go directly to their mail app, so startActivity() should be
758     * called directly: it will
759     * either launch the current preferred app, or put up a dialog allowing the
760     * user to pick an app to use and optionally marking that as preferred.
761     * <p>
762     * In contrast, if the user is selecting a menu item to send a picture
763     * they are viewing to someone else, there are many different things they
764     * may want to do at this point: send it through e-mail, upload it to a
765     * web service, etc.  In this case the CHOOSER action should be used, to
766     * always present to the user a list of the things they can do, with a
767     * nice title given by the caller such as "Send this photo with:".
768     * <p>
769     * As a convenience, an Intent of this form can be created with the
770     * {@link #createChooser} function.
771     * <p>Input: No data should be specified.  get*Extra must have
772     * a {@link #EXTRA_INTENT} field containing the Intent being executed,
773     * and can optionally have a {@link #EXTRA_TITLE} field containing the
774     * title text to display in the chooser.
775     * <p>Output: Depends on the protocol of {@link #EXTRA_INTENT}.
776     */
777    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
778    public static final String ACTION_CHOOSER = "android.intent.action.CHOOSER";
779
780    /**
781     * Convenience function for creating a {@link #ACTION_CHOOSER} Intent.
782     *
783     * @param target The Intent that the user will be selecting an activity
784     * to perform.
785     * @param title Optional title that will be displayed in the chooser.
786     * @return Return a new Intent object that you can hand to
787     * {@link Context#startActivity(Intent) Context.startActivity()} and
788     * related methods.
789     */
790    public static Intent createChooser(Intent target, CharSequence title) {
791        Intent intent = new Intent(ACTION_CHOOSER);
792        intent.putExtra(EXTRA_INTENT, target);
793        if (title != null) {
794            intent.putExtra(EXTRA_TITLE, title);
795        }
796        return intent;
797    }
798    /**
799     * Activity Action: Allow the user to select a particular kind of data and
800     * return it.  This is different than {@link #ACTION_PICK} in that here we
801     * just say what kind of data is desired, not a URI of existing data from
802     * which the user can pick.  A ACTION_GET_CONTENT could allow the user to
803     * create the data as it runs (for example taking a picture or recording a
804     * sound), let them browser over the web and download the desired data,
805     * etc.
806     * <p>
807     * There are two main ways to use this action: if you want an specific kind
808     * of data, such as a person contact, you set the MIME type to the kind of
809     * data you want and launch it with {@link Context#startActivity(Intent)}.
810     * The system will then launch the best application to select that kind
811     * of data for you.
812     * <p>
813     * You may also be interested in any of a set of types of content the user
814     * can pick.  For example, an e-mail application that wants to allow the
815     * user to add an attachment to an e-mail message can use this action to
816     * bring up a list of all of the types of content the user can attach.
817     * <p>
818     * In this case, you should wrap the GET_CONTENT intent with a chooser
819     * (through {@link #createChooser}), which will give the proper interface
820     * for the user to pick how to send your data and allow you to specify
821     * a prompt indicating what they are doing.  You will usually specify a
822     * broad MIME type (such as image/* or {@literal *}/*), resulting in a
823     * broad range of content types the user can select from.
824     * <p>
825     * When using such a broad GET_CONTENT action, it is often desireable to
826     * only pick from data that can be represented as a stream.  This is
827     * accomplished by requiring the {@link #CATEGORY_OPENABLE} in the Intent.
828     * <p>
829     * Input: {@link #getType} is the desired MIME type to retrieve.  Note
830     * that no URI is supplied in the intent, as there are no constraints on
831     * where the returned data originally comes from.  You may also include the
832     * {@link #CATEGORY_OPENABLE} if you can only accept data that can be
833     * opened as a stream.
834     * <p>
835     * Output: The URI of the item that was picked.  This must be a content:
836     * URI so that any receiver can access it.
837     */
838    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
839    public static final String ACTION_GET_CONTENT = "android.intent.action.GET_CONTENT";
840    /**
841     * Activity Action: Dial a number as specified by the data.  This shows a
842     * UI with the number being dialed, allowing the user to explicitly
843     * initiate the call.
844     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
845     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
846     * number.
847     * <p>Output: nothing.
848     */
849    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
850    public static final String ACTION_DIAL = "android.intent.action.DIAL";
851    /**
852     * Activity Action: Perform a call to someone specified by the data.
853     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
854     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
855     * number.
856     * <p>Output: nothing.
857     *
858     * <p>Note: there will be restrictions on which applications can initiate a
859     * call; most applications should use the {@link #ACTION_DIAL}.
860     * <p>Note: this Intent <strong>cannot</strong> be used to call emergency
861     * numbers.  Applications can <strong>dial</strong> emergency numbers using
862     * {@link #ACTION_DIAL}, however.
863     */
864    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
865    public static final String ACTION_CALL = "android.intent.action.CALL";
866    /**
867     * Activity Action: Perform a call to an emergency number specified by the
868     * data.
869     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
870     * tel: URI of an explicit phone number.
871     * <p>Output: nothing.
872     * @hide
873     */
874    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY";
875    /**
876     * Activity action: Perform a call to any number (emergency or not)
877     * specified by the data.
878     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
879     * tel: URI of an explicit phone number.
880     * <p>Output: nothing.
881     * @hide
882     */
883    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";
884    /**
885     * Activity Action: Send a message to someone specified by the data.
886     * <p>Input: {@link #getData} is URI describing the target.
887     * <p>Output: nothing.
888     */
889    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
890    public static final String ACTION_SENDTO = "android.intent.action.SENDTO";
891    /**
892     * Activity Action: Deliver some data to someone else.  Who the data is
893     * being delivered to is not specified; it is up to the receiver of this
894     * action to ask the user where the data should be sent.
895     * <p>
896     * When launching a SEND intent, you should usually wrap it in a chooser
897     * (through {@link #createChooser}), which will give the proper interface
898     * for the user to pick how to send your data and allow you to specify
899     * a prompt indicating what they are doing.
900     * <p>
901     * Input: {@link #getType} is the MIME type of the data being sent.
902     * get*Extra can have either a {@link #EXTRA_TEXT}
903     * or {@link #EXTRA_STREAM} field, containing the data to be sent.  If
904     * using EXTRA_TEXT, the MIME type should be "text/plain"; otherwise it
905     * should be the MIME type of the data in EXTRA_STREAM.  Use {@literal *}/*
906     * if the MIME type is unknown (this will only allow senders that can
907     * handle generic data streams).
908     * <p>
909     * Optional standard extras, which may be interpreted by some recipients as
910     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
911     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
912     * <p>
913     * Output: nothing.
914     */
915    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
916    public static final String ACTION_SEND = "android.intent.action.SEND";
917    /**
918     * Activity Action: Deliver multiple data to someone else.
919     * <p>
920     * Like ACTION_SEND, except the data is multiple.
921     * <p>
922     * Input: {@link #getType} is the MIME type of the data being sent.
923     * get*ArrayListExtra can have either a {@link #EXTRA_TEXT} or {@link
924     * #EXTRA_STREAM} field, containing the data to be sent.
925     * <p>
926     * Optional standard extras, which may be interpreted by some recipients as
927     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
928     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
929     * <p>
930     * Output: nothing.
931     */
932    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
933    public static final String ACTION_SEND_MULTIPLE = "android.intent.action.SEND_MULTIPLE";
934    /**
935     * Activity Action: Handle an incoming phone call.
936     * <p>Input: nothing.
937     * <p>Output: nothing.
938     */
939    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
940    public static final String ACTION_ANSWER = "android.intent.action.ANSWER";
941    /**
942     * Activity Action: Insert an empty item into the given container.
943     * <p>Input: {@link #getData} is URI of the directory (vnd.android.cursor.dir/*)
944     * in which to place the data.
945     * <p>Output: URI of the new data that was created.
946     */
947    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
948    public static final String ACTION_INSERT = "android.intent.action.INSERT";
949    /**
950     * Activity Action: Delete the given data from its container.
951     * <p>Input: {@link #getData} is URI of data to be deleted.
952     * <p>Output: nothing.
953     */
954    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
955    public static final String ACTION_DELETE = "android.intent.action.DELETE";
956    /**
957     * Activity Action: Run the data, whatever that means.
958     * <p>Input: ?  (Note: this is currently specific to the test harness.)
959     * <p>Output: nothing.
960     */
961    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
962    public static final String ACTION_RUN = "android.intent.action.RUN";
963    /**
964     * Activity Action: Perform a data synchronization.
965     * <p>Input: ?
966     * <p>Output: ?
967     */
968    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
969    public static final String ACTION_SYNC = "android.intent.action.SYNC";
970    /**
971     * Activity Action: Pick an activity given an intent, returning the class
972     * selected.
973     * <p>Input: get*Extra field {@link #EXTRA_INTENT} is an Intent
974     * used with {@link PackageManager#queryIntentActivities} to determine the
975     * set of activities from which to pick.
976     * <p>Output: Class name of the activity that was selected.
977     */
978    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
979    public static final String ACTION_PICK_ACTIVITY = "android.intent.action.PICK_ACTIVITY";
980    /**
981     * Activity Action: Perform a search.
982     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
983     * is the text to search for.  If empty, simply
984     * enter your search results Activity with the search UI activated.
985     * <p>Output: nothing.
986     */
987    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
988    public static final String ACTION_SEARCH = "android.intent.action.SEARCH";
989    /**
990     * Activity Action: Start the platform-defined tutorial
991     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
992     * is the text to search for.  If empty, simply
993     * enter your search results Activity with the search UI activated.
994     * <p>Output: nothing.
995     */
996    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
997    public static final String ACTION_SYSTEM_TUTORIAL = "android.intent.action.SYSTEM_TUTORIAL";
998    /**
999     * Activity Action: Perform a web search.
1000     * <p>
1001     * Input: {@link android.app.SearchManager#QUERY
1002     * getStringExtra(SearchManager.QUERY)} is the text to search for. If it is
1003     * a url starts with http or https, the site will be opened. If it is plain
1004     * text, Google search will be applied.
1005     * <p>
1006     * Output: nothing.
1007     */
1008    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1009    public static final String ACTION_WEB_SEARCH = "android.intent.action.WEB_SEARCH";
1010    /**
1011     * Activity Action: List all available applications
1012     * <p>Input: Nothing.
1013     * <p>Output: nothing.
1014     */
1015    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1016    public static final String ACTION_ALL_APPS = "android.intent.action.ALL_APPS";
1017    /**
1018     * Activity Action: Show settings for choosing wallpaper
1019     * <p>Input: Nothing.
1020     * <p>Output: Nothing.
1021     */
1022    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1023    public static final String ACTION_SET_WALLPAPER = "android.intent.action.SET_WALLPAPER";
1024
1025    /**
1026     * Activity Action: Show activity for reporting a bug.
1027     * <p>Input: Nothing.
1028     * <p>Output: Nothing.
1029     */
1030    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1031    public static final String ACTION_BUG_REPORT = "android.intent.action.BUG_REPORT";
1032
1033    /**
1034     *  Activity Action: Main entry point for factory tests.  Only used when
1035     *  the device is booting in factory test node.  The implementing package
1036     *  must be installed in the system image.
1037     *  <p>Input: nothing
1038     *  <p>Output: nothing
1039     */
1040    public static final String ACTION_FACTORY_TEST = "android.intent.action.FACTORY_TEST";
1041
1042    /**
1043     * Activity Action: The user pressed the "call" button to go to the dialer
1044     * or other appropriate UI for placing a call.
1045     * <p>Input: Nothing.
1046     * <p>Output: Nothing.
1047     */
1048    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1049    public static final String ACTION_CALL_BUTTON = "android.intent.action.CALL_BUTTON";
1050
1051    /**
1052     * Activity Action: Start Voice Command.
1053     * <p>Input: Nothing.
1054     * <p>Output: Nothing.
1055     */
1056    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1057    public static final String ACTION_VOICE_COMMAND = "android.intent.action.VOICE_COMMAND";
1058
1059    /**
1060     * Activity Action: Start action associated with long pressing on the
1061     * search key.
1062     * <p>Input: Nothing.
1063     * <p>Output: Nothing.
1064     */
1065    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1066    public static final String ACTION_SEARCH_LONG_PRESS = "android.intent.action.SEARCH_LONG_PRESS";
1067
1068    /**
1069     * Activity Action: The user pressed the "Report" button in the crash/ANR dialog.
1070     * This intent is delivered to the package which installed the application, usually
1071     * the Market.
1072     * <p>Input: No data is specified. The bug report is passed in using
1073     * an {@link #EXTRA_BUG_REPORT} field.
1074     * <p>Output: Nothing.
1075     * @hide
1076     */
1077    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1078    public static final String ACTION_APP_ERROR = "android.intent.action.APP_ERROR";
1079
1080    /**
1081     * Activity Action: Show power usage information to the user.
1082     * <p>Input: Nothing.
1083     * <p>Output: Nothing.
1084     */
1085    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1086    public static final String ACTION_POWER_USAGE_SUMMARY = "android.intent.action.POWER_USAGE_SUMMARY";
1087
1088    /**
1089     * Activity Action: Setup wizard to launch after a platform update.  This
1090     * activity should have a string meta-data field associated with it,
1091     * {@link #METADATA_SETUP_VERSION}, which defines the current version of
1092     * the platform for setup.  The activity will be launched only if
1093     * {@link android.provider.Settings.Secure#LAST_SETUP_SHOWN} is not the
1094     * same value.
1095     * <p>Input: Nothing.
1096     * <p>Output: Nothing.
1097     * @hide
1098     */
1099    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1100    public static final String ACTION_UPGRADE_SETUP = "android.intent.action.UPGRADE_SETUP";
1101
1102    /**
1103     * A string associated with a {@link #ACTION_UPGRADE_SETUP} activity
1104     * describing the last run version of the platform that was setup.
1105     * @hide
1106     */
1107    public static final String METADATA_SETUP_VERSION = "android.SETUP_VERSION";
1108
1109    // ---------------------------------------------------------------------
1110    // ---------------------------------------------------------------------
1111    // Standard intent broadcast actions (see action variable).
1112
1113    /**
1114     * Broadcast Action: Sent after the screen turns off.
1115     *
1116     * <p class="note">This is a protected intent that can only be sent
1117     * by the system.
1118     */
1119    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1120    public static final String ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF";
1121    /**
1122     * Broadcast Action: Sent after the screen turns on.
1123     *
1124     * <p class="note">This is a protected intent that can only be sent
1125     * by the system.
1126     */
1127    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1128    public static final String ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON";
1129
1130    /**
1131     * Broadcast Action: Sent when the user is present after device wakes up (e.g when the
1132     * keyguard is gone).
1133     *
1134     * <p class="note">This is a protected intent that can only be sent
1135     * by the system.
1136     */
1137    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1138    public static final String ACTION_USER_PRESENT= "android.intent.action.USER_PRESENT";
1139
1140    /**
1141     * Broadcast Action: The current time has changed.  Sent every
1142     * minute.  You can <em>not</em> receive this through components declared
1143     * in manifests, only by exlicitly registering for it with
1144     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1145     * Context.registerReceiver()}.
1146     *
1147     * <p class="note">This is a protected intent that can only be sent
1148     * by the system.
1149     */
1150    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1151    public static final String ACTION_TIME_TICK = "android.intent.action.TIME_TICK";
1152    /**
1153     * Broadcast Action: The time was set.
1154     */
1155    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1156    public static final String ACTION_TIME_CHANGED = "android.intent.action.TIME_SET";
1157    /**
1158     * Broadcast Action: The date has changed.
1159     */
1160    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1161    public static final String ACTION_DATE_CHANGED = "android.intent.action.DATE_CHANGED";
1162    /**
1163     * Broadcast Action: The timezone has changed. The intent will have the following extra values:</p>
1164     * <ul>
1165     *   <li><em>time-zone</em> - The java.util.TimeZone.getID() value identifying the new time zone.</li>
1166     * </ul>
1167     *
1168     * <p class="note">This is a protected intent that can only be sent
1169     * by the system.
1170     */
1171    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1172    public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
1173    /**
1174     * Alarm Changed Action: This is broadcast when the AlarmClock
1175     * application's alarm is set or unset.  It is used by the
1176     * AlarmClock application and the StatusBar service.
1177     * @hide
1178     */
1179    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1180    public static final String ACTION_ALARM_CHANGED = "android.intent.action.ALARM_CHANGED";
1181    /**
1182     * Sync State Changed Action: This is broadcast when the sync starts or stops or when one has
1183     * been failing for a long time.  It is used by the SyncManager and the StatusBar service.
1184     * @hide
1185     */
1186    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1187    public static final String ACTION_SYNC_STATE_CHANGED
1188            = "android.intent.action.SYNC_STATE_CHANGED";
1189    /**
1190     * Broadcast Action: This is broadcast once, after the system has finished
1191     * booting.  It can be used to perform application-specific initialization,
1192     * such as installing alarms.  You must hold the
1193     * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED} permission
1194     * in order to receive this broadcast.
1195     *
1196     * <p class="note">This is a protected intent that can only be sent
1197     * by the system.
1198     */
1199    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1200    public static final String ACTION_BOOT_COMPLETED = "android.intent.action.BOOT_COMPLETED";
1201    /**
1202     * Broadcast Action: This is broadcast when a user action should request a
1203     * temporary system dialog to dismiss.  Some examples of temporary system
1204     * dialogs are the notification window-shade and the recent tasks dialog.
1205     */
1206    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1207    /**
1208     * Broadcast Action: Trigger the download and eventual installation
1209     * of a package.
1210     * <p>Input: {@link #getData} is the URI of the package file to download.
1211     *
1212     * <p class="note">This is a protected intent that can only be sent
1213     * by the system.
1214     */
1215    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1216    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1217    /**
1218     * Broadcast Action: A new application package has been installed on the
1219     * device. The data contains the name of the package.  Note that the
1220     * newly installed package does <em>not</em> receive this broadcast.
1221     * <p>My include the following extras:
1222     * <ul>
1223     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1224     * <li> {@link #EXTRA_REPLACING} is set to true if this is following
1225     * an {@link #ACTION_PACKAGE_REMOVED} broadcast for the same package.
1226     * </ul>
1227     *
1228     * <p class="note">This is a protected intent that can only be sent
1229     * by the system.
1230     */
1231    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1232    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1233    /**
1234     * Broadcast Action: A new version of an application package has been
1235     * installed, replacing an existing version that was previously installed.
1236     * The data contains the name of the package.
1237     * <p>My include the following extras:
1238     * <ul>
1239     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1240     * </ul>
1241     *
1242     * <p class="note">This is a protected intent that can only be sent
1243     * by the system.
1244     */
1245    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1246    public static final String ACTION_PACKAGE_REPLACED = "android.intent.action.PACKAGE_REPLACED";
1247    /**
1248     * Broadcast Action: An existing application package has been removed from
1249     * the device.  The data contains the name of the package.  The package
1250     * that is being installed does <em>not</em> receive this Intent.
1251     * <ul>
1252     * <li> {@link #EXTRA_UID} containing the integer uid previously assigned
1253     * to the package.
1254     * <li> {@link #EXTRA_DATA_REMOVED} is set to true if the entire
1255     * application -- data and code -- is being removed.
1256     * <li> {@link #EXTRA_REPLACING} is set to true if this will be followed
1257     * by an {@link #ACTION_PACKAGE_ADDED} broadcast for the same package.
1258     * </ul>
1259     *
1260     * <p class="note">This is a protected intent that can only be sent
1261     * by the system.
1262     */
1263    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1264    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1265    /**
1266     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1267     * enabled or disabled.  The data contains the name of the package.
1268     * <ul>
1269     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1270     * </ul>
1271     *
1272     * <p class="note">This is a protected intent that can only be sent
1273     * by the system.
1274     */
1275    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1276    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1277    /**
1278     * Broadcast Action: The user has restarted a package, and all of its
1279     * processes have been killed.  All runtime state
1280     * associated with it (processes, alarms, notifications, etc) should
1281     * be removed.  Note that the restarted package does <em>not</em>
1282     * receive this broadcast.
1283     * The data contains the name of the package.
1284     * <ul>
1285     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1286     * </ul>
1287     *
1288     * <p class="note">This is a protected intent that can only be sent
1289     * by the system.
1290     */
1291    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1292    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1293    /**
1294     * Broadcast Action: The user has cleared the data of a package.  This should
1295     * be preceded by {@link #ACTION_PACKAGE_RESTARTED}, after which all of
1296     * its persistent data is erased and this broadcast sent.
1297     * Note that the cleared package does <em>not</em>
1298     * receive this broadcast. The data contains the name of the package.
1299     * <ul>
1300     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1301     * </ul>
1302     *
1303     * <p class="note">This is a protected intent that can only be sent
1304     * by the system.
1305     */
1306    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1307    public static final String ACTION_PACKAGE_DATA_CLEARED = "android.intent.action.PACKAGE_DATA_CLEARED";
1308    /**
1309     * Broadcast Action: A user ID has been removed from the system.  The user
1310     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1311     *
1312     * <p class="note">This is a protected intent that can only be sent
1313     * by the system.
1314     */
1315    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1316    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1317    /**
1318     * Broadcast Action:  The current system wallpaper has changed.  See
1319     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1320     */
1321    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1322    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1323    /**
1324     * Broadcast Action: The current device {@link android.content.res.Configuration}
1325     * (orientation, locale, etc) has changed.  When such a change happens, the
1326     * UIs (view hierarchy) will need to be rebuilt based on this new
1327     * information; for the most part, applications don't need to worry about
1328     * this, because the system will take care of stopping and restarting the
1329     * application to make sure it sees the new changes.  Some system code that
1330     * can not be restarted will need to watch for this action and handle it
1331     * appropriately.
1332     *
1333     * <p class="note">This is a protected intent that can only be sent
1334     * by the system.
1335     *
1336     * @see android.content.res.Configuration
1337     */
1338    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1339    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1340    /**
1341     * Broadcast Action:  The charging state, or charge level of the battery has
1342     * changed.
1343     *
1344     * <p class="note">
1345     * You can <em>not</em> receive this through components declared
1346     * in manifests, only by explicitly registering for it with
1347     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1348     * Context.registerReceiver()}.
1349     *
1350     * <p class="note">This is a protected intent that can only be sent
1351     * by the system.
1352     */
1353    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1354    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1355    /**
1356     * Broadcast Action:  Indicates low battery condition on the device.
1357     * This broadcast corresponds to the "Low battery warning" system dialog.
1358     *
1359     * <p class="note">This is a protected intent that can only be sent
1360     * by the system.
1361     */
1362    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1363    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1364    /**
1365     * Broadcast Action:  Indicates the battery is now okay after being low.
1366     * This will be sent after {@link #ACTION_BATTERY_LOW} once the battery has
1367     * gone back up to an okay state.
1368     *
1369     * <p class="note">This is a protected intent that can only be sent
1370     * by the system.
1371     */
1372    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1373    public static final String ACTION_BATTERY_OKAY = "android.intent.action.BATTERY_OKAY";
1374    /**
1375     * Broadcast Action:  External power has been connected to the device.
1376     * This is intended for applications that wish to register specifically to this notification.
1377     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1378     * stay active to receive this notification.  This action can be used to implement actions
1379     * that wait until power is available to trigger.
1380     *
1381     * <p class="note">This is a protected intent that can only be sent
1382     * by the system.
1383     */
1384    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1385    public static final String ACTION_POWER_CONNECTED = "android.intent.action.ACTION_POWER_CONNECTED";
1386    /**
1387     * Broadcast Action:  External power has been removed from the device.
1388     * This is intended for applications that wish to register specifically to this notification.
1389     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1390     * stay active to receive this notification.  This action can be used to implement actions
1391     * that wait until power is available to trigger.
1392     *
1393     * <p class="note">This is a protected intent that can only be sent
1394     * by the system.
1395     */
1396    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1397    public static final String ACTION_POWER_DISCONNECTED = "android.intent.action.ACTION_POWER_DISCONNECTED";
1398    /**
1399     * Broadcast Action:  Device is shutting down.
1400     * This is broadcast when the device is being shut down (completely turned
1401     * off, not sleeping).  Once the broadcast is complete, the final shutdown
1402     * will proceed and all unsaved data lost.  Apps will not normally need
1403     * to handle this, since the forground activity will be paused as well.
1404     *
1405     * <p class="note">This is a protected intent that can only be sent
1406     * by the system.
1407     */
1408    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1409    public static final String ACTION_SHUTDOWN = "android.intent.action.ACTION_SHUTDOWN";
1410    /**
1411     * Broadcast Action:  Indicates low memory condition on the device
1412     *
1413     * <p class="note">This is a protected intent that can only be sent
1414     * by the system.
1415     */
1416    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1417    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1418    /**
1419     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1420     *
1421     * <p class="note">This is a protected intent that can only be sent
1422     * by the system.
1423     */
1424    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1425    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1426    /**
1427     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1428     * and package management should be started.
1429     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1430     * notification.
1431     */
1432    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1433    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1434    /**
1435     * Broadcast Action:  The device has entered USB Mass Storage mode.
1436     * This is used mainly for the USB Settings panel.
1437     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1438     * when the SD card file system is mounted or unmounted
1439     */
1440    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1441    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1442
1443    /**
1444     * Broadcast Action:  The device has exited USB Mass Storage mode.
1445     * This is used mainly for the USB Settings panel.
1446     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1447     * when the SD card file system is mounted or unmounted
1448     */
1449    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1450    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1451
1452    /**
1453     * Broadcast Action:  External media has been removed.
1454     * The path to the mount point for the removed media is contained in the Intent.mData field.
1455     */
1456    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1457    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1458
1459    /**
1460     * Broadcast Action:  External media is present, but not mounted at its mount point.
1461     * The path to the mount point for the removed media is contained in the Intent.mData field.
1462     */
1463    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1464    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1465
1466    /**
1467     * Broadcast Action:  External media is present, and being disk-checked
1468     * The path to the mount point for the checking media is contained in the Intent.mData field.
1469     */
1470    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1471    public static final String ACTION_MEDIA_CHECKING = "android.intent.action.MEDIA_CHECKING";
1472
1473    /**
1474     * Broadcast Action:  External media is present, but is using an incompatible fs (or is blank)
1475     * The path to the mount point for the checking media is contained in the Intent.mData field.
1476     */
1477    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1478    public static final String ACTION_MEDIA_NOFS = "android.intent.action.MEDIA_NOFS";
1479
1480    /**
1481     * Broadcast Action:  External media is present and mounted at its mount point.
1482     * The path to the mount point for the removed media is contained in the Intent.mData field.
1483     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1484     * media was mounted read only.
1485     */
1486    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1487    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1488
1489    /**
1490     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1491     * The path to the mount point for the removed media is contained in the Intent.mData field.
1492     */
1493    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1494    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1495
1496    /**
1497     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1498     * The path to the mount point for the removed media is contained in the Intent.mData field.
1499     */
1500    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1501    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1502
1503    /**
1504     * Broadcast Action:  External media is present but cannot be mounted.
1505     * The path to the mount point for the removed media is contained in the Intent.mData field.
1506     */
1507    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1508    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1509
1510   /**
1511     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1512     * Applications should close all files they have open within the mount point when they receive this intent.
1513     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1514     */
1515    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1516    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1517
1518    /**
1519     * Broadcast Action:  The media scanner has started scanning a directory.
1520     * The path to the directory being scanned is contained in the Intent.mData field.
1521     */
1522    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1523    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1524
1525   /**
1526     * Broadcast Action:  The media scanner has finished scanning a directory.
1527     * The path to the scanned directory is contained in the Intent.mData field.
1528     */
1529    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1530    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1531
1532   /**
1533     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1534     * The path to the file is contained in the Intent.mData field.
1535     */
1536    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1537    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1538
1539   /**
1540     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1541     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1542     * caused the broadcast.
1543     */
1544    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1545    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1546
1547    /**
1548     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1549     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1550     * caused the broadcast.
1551     */
1552    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1553    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1554
1555    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1556    // location; they are not general-purpose actions.
1557
1558    /**
1559     * Broadcast Action: An GTalk connection has been established.
1560     */
1561    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1562    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1563            "android.intent.action.GTALK_CONNECTED";
1564
1565    /**
1566     * Broadcast Action: An GTalk connection has been disconnected.
1567     */
1568    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1569    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1570            "android.intent.action.GTALK_DISCONNECTED";
1571
1572    /**
1573     * Broadcast Action: An input method has been changed.
1574     */
1575    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1576    public static final String ACTION_INPUT_METHOD_CHANGED =
1577            "android.intent.action.INPUT_METHOD_CHANGED";
1578
1579    /**
1580     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1581     * more radios have been turned off or on. The intent will have the following extra value:</p>
1582     * <ul>
1583     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1584     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1585     *   turned off</li>
1586     * </ul>
1587     *
1588     * <p class="note">This is a protected intent that can only be sent
1589     * by the system.
1590     */
1591    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1592    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1593
1594    /**
1595     * Broadcast Action: Some content providers have parts of their namespace
1596     * where they publish new events or items that the user may be especially
1597     * interested in. For these things, they may broadcast this action when the
1598     * set of interesting items change.
1599     *
1600     * For example, GmailProvider sends this notification when the set of unread
1601     * mail in the inbox changes.
1602     *
1603     * <p>The data of the intent identifies which part of which provider
1604     * changed. When queried through the content resolver, the data URI will
1605     * return the data set in question.
1606     *
1607     * <p>The intent will have the following extra values:
1608     * <ul>
1609     *   <li><em>count</em> - The number of items in the data set. This is the
1610     *       same as the number of items in the cursor returned by querying the
1611     *       data URI. </li>
1612     * </ul>
1613     *
1614     * This intent will be sent at boot (if the count is non-zero) and when the
1615     * data set changes. It is possible for the data set to change without the
1616     * count changing (for example, if a new unread message arrives in the same
1617     * sync operation in which a message is archived). The phone should still
1618     * ring/vibrate/etc as normal in this case.
1619     */
1620    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1621    public static final String ACTION_PROVIDER_CHANGED =
1622            "android.intent.action.PROVIDER_CHANGED";
1623
1624    /**
1625     * Broadcast Action: Wired Headset plugged in or unplugged.
1626     *
1627     * <p>The intent will have the following extra values:
1628     * <ul>
1629     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1630     *   <li><em>name</em> - Headset type, human readable string </li>
1631     * </ul>
1632     * </ul>
1633     */
1634    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1635    public static final String ACTION_HEADSET_PLUG =
1636            "android.intent.action.HEADSET_PLUG";
1637
1638    /**
1639     * Broadcast Action: An outgoing call is about to be placed.
1640     *
1641     * <p>The Intent will have the following extra value:
1642     * <ul>
1643     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1644     *       the phone number originally intended to be dialed.</li>
1645     * </ul>
1646     * <p>Once the broadcast is finished, the resultData is used as the actual
1647     * number to call.  If  <code>null</code>, no call will be placed.</p>
1648     * <p>It is perfectly acceptable for multiple receivers to process the
1649     * outgoing call in turn: for example, a parental control application
1650     * might verify that the user is authorized to place the call at that
1651     * time, then a number-rewriting application might add an area code if
1652     * one was not specified.</p>
1653     * <p>For consistency, any receiver whose purpose is to prohibit phone
1654     * calls should have a priority of 0, to ensure it will see the final
1655     * phone number to be dialed.
1656     * Any receiver whose purpose is to rewrite phone numbers to be called
1657     * should have a positive priority.
1658     * Negative priorities are reserved for the system for this broadcast;
1659     * using them may cause problems.</p>
1660     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1661     * abort the broadcast.</p>
1662     * <p>Emergency calls cannot be intercepted using this mechanism, and
1663     * other calls cannot be modified to call emergency numbers using this
1664     * mechanism.
1665     * <p>You must hold the
1666     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1667     * permission to receive this Intent.</p>
1668     *
1669     * <p class="note">This is a protected intent that can only be sent
1670     * by the system.
1671     */
1672    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1673    public static final String ACTION_NEW_OUTGOING_CALL =
1674            "android.intent.action.NEW_OUTGOING_CALL";
1675
1676    /**
1677     * Broadcast Action: Have the device reboot.  This is only for use by
1678     * system code.
1679     *
1680     * <p class="note">This is a protected intent that can only be sent
1681     * by the system.
1682     */
1683    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1684    public static final String ACTION_REBOOT =
1685            "android.intent.action.REBOOT";
1686
1687    /**
1688     * @hide
1689     * TODO: This will be unhidden in a later CL.
1690     * Broadcast Action: The TextToSpeech synthesizer has completed processing
1691     * all of the text in the speech queue.
1692     */
1693    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1694    public static final String ACTION_TTS_QUEUE_PROCESSING_COMPLETED =
1695            "android.intent.action.TTS_QUEUE_PROCESSING_COMPLETED";
1696
1697    // ---------------------------------------------------------------------
1698    // ---------------------------------------------------------------------
1699    // Standard intent categories (see addCategory()).
1700
1701    /**
1702     * Set if the activity should be an option for the default action
1703     * (center press) to perform on a piece of data.  Setting this will
1704     * hide from the user any activities without it set when performing an
1705     * action on some data.  Note that this is normal -not- set in the
1706     * Intent when initiating an action -- it is for use in intent filters
1707     * specified in packages.
1708     */
1709    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1710    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1711    /**
1712     * Activities that can be safely invoked from a browser must support this
1713     * category.  For example, if the user is viewing a web page or an e-mail
1714     * and clicks on a link in the text, the Intent generated execute that
1715     * link will require the BROWSABLE category, so that only activities
1716     * supporting this category will be considered as possible actions.  By
1717     * supporting this category, you are promising that there is nothing
1718     * damaging (without user intervention) that can happen by invoking any
1719     * matching Intent.
1720     */
1721    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1722    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1723    /**
1724     * Set if the activity should be considered as an alternative action to
1725     * the data the user is currently viewing.  See also
1726     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1727     * applies to the selection in a list of items.
1728     *
1729     * <p>Supporting this category means that you would like your activity to be
1730     * displayed in the set of alternative things the user can do, usually as
1731     * part of the current activity's options menu.  You will usually want to
1732     * include a specific label in the &lt;intent-filter&gt; of this action
1733     * describing to the user what it does.
1734     *
1735     * <p>The action of IntentFilter with this category is important in that it
1736     * describes the specific action the target will perform.  This generally
1737     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1738     * a specific name such as "com.android.camera.action.CROP.  Only one
1739     * alternative of any particular action will be shown to the user, so using
1740     * a specific action like this makes sure that your alternative will be
1741     * displayed while also allowing other applications to provide their own
1742     * overrides of that particular action.
1743     */
1744    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1745    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1746    /**
1747     * Set if the activity should be considered as an alternative selection
1748     * action to the data the user has currently selected.  This is like
1749     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1750     * of items from which the user can select, giving them alternatives to the
1751     * default action that will be performed on it.
1752     */
1753    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1754    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1755    /**
1756     * Intended to be used as a tab inside of an containing TabActivity.
1757     */
1758    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1759    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1760    /**
1761     * Should be displayed in the top-level launcher.
1762     */
1763    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1764    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1765    /**
1766     * Provides information about the package it is in; typically used if
1767     * a package does not contain a {@link #CATEGORY_LAUNCHER} to provide
1768     * a front-door to the user without having to be shown in the all apps list.
1769     */
1770    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1771    public static final String CATEGORY_INFO = "android.intent.category.INFO";
1772    /**
1773     * This is the home activity, that is the first activity that is displayed
1774     * when the device boots.
1775     */
1776    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1777    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1778    /**
1779     * This activity is a preference panel.
1780     */
1781    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1782    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1783    /**
1784     * This activity is a development preference panel.
1785     */
1786    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1787    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1788    /**
1789     * Capable of running inside a parent activity container.
1790     */
1791    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1792    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1793    /**
1794     * This activity may be exercised by the monkey or other automated test tools.
1795     */
1796    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1797    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1798    /**
1799     * To be used as a test (not part of the normal user experience).
1800     */
1801    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1802    /**
1803     * To be used as a unit test (run through the Test Harness).
1804     */
1805    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1806    /**
1807     * To be used as an sample code example (not part of the normal user
1808     * experience).
1809     */
1810    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1811    /**
1812     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1813     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1814     * when queried, though it is allowable for those columns to be blank.
1815     */
1816    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1817    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1818
1819    /**
1820     * To be used as code under test for framework instrumentation tests.
1821     */
1822    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1823            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1824    // ---------------------------------------------------------------------
1825    // ---------------------------------------------------------------------
1826    // Standard extra data keys.
1827
1828    /**
1829     * The initial data to place in a newly created record.  Use with
1830     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1831     * fields as would be given to the underlying ContentProvider.insert()
1832     * call.
1833     */
1834    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1835
1836    /**
1837     * A constant CharSequence that is associated with the Intent, used with
1838     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1839     * this may be a styled CharSequence, so you must use
1840     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1841     * retrieve it.
1842     */
1843    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1844
1845    /**
1846     * A content: URI holding a stream of data associated with the Intent,
1847     * used with {@link #ACTION_SEND} to supply the data being sent.
1848     */
1849    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1850
1851    /**
1852     * A String[] holding e-mail addresses that should be delivered to.
1853     */
1854    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1855
1856    /**
1857     * A String[] holding e-mail addresses that should be carbon copied.
1858     */
1859    public static final String EXTRA_CC       = "android.intent.extra.CC";
1860
1861    /**
1862     * A String[] holding e-mail addresses that should be blind carbon copied.
1863     */
1864    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1865
1866    /**
1867     * A constant string holding the desired subject line of a message.
1868     */
1869    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1870
1871    /**
1872     * An Intent describing the choices you would like shown with
1873     * {@link #ACTION_PICK_ACTIVITY}.
1874     */
1875    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1876
1877    /**
1878     * A CharSequence dialog title to provide to the user when used with a
1879     * {@link #ACTION_CHOOSER}.
1880     */
1881    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1882
1883    /**
1884     * A {@link android.view.KeyEvent} object containing the event that
1885     * triggered the creation of the Intent it is in.
1886     */
1887    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1888
1889    /**
1890     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1891     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1892     * of restarting the application.
1893     */
1894    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1895
1896    /**
1897     * A String holding the phone number originally entered in
1898     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1899     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1900     */
1901    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1902    /**
1903     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1904     * intents to supply the uid the package had been assigned.  Also an optional
1905     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1906     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1907     * purpose.
1908     */
1909    public static final String EXTRA_UID = "android.intent.extra.UID";
1910
1911    /**
1912     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1913     * intents to indicate whether this represents a full uninstall (removing
1914     * both the code and its data) or a partial uninstall (leaving its data,
1915     * implying that this is an update).
1916     */
1917    public static final String EXTRA_DATA_REMOVED = "android.intent.extra.DATA_REMOVED";
1918
1919    /**
1920     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1921     * intents to indicate that this is a replacement of the package, so this
1922     * broadcast will immediately be followed by an add broadcast for a
1923     * different version of the same package.
1924     */
1925    public static final String EXTRA_REPLACING = "android.intent.extra.REPLACING";
1926
1927    /**
1928     * Used as an int extra field in {@link android.app.AlarmManager} intents
1929     * to tell the application being invoked how many pending alarms are being
1930     * delievered with the intent.  For one-shot alarms this will always be 1.
1931     * For recurring alarms, this might be greater than 1 if the device was
1932     * asleep or powered off at the time an earlier alarm would have been
1933     * delivered.
1934     */
1935    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1936
1937    /**
1938     * Used as a parcelable extra field in {@link #ACTION_APP_ERROR}, containing
1939     * the bug report.
1940     *
1941     * @hide
1942     */
1943    public static final String EXTRA_BUG_REPORT = "android.intent.extra.BUG_REPORT";
1944
1945    /**
1946     * Used as a string extra field when sending an intent to PackageInstaller to install a
1947     * package. Specifies the installer package name; this package will receive the
1948     * {@link #ACTION_APP_ERROR} intent.
1949     *
1950     * @hide
1951     */
1952    public static final String EXTRA_INSTALLER_PACKAGE_NAME
1953            = "android.intent.extra.INSTALLER_PACKAGE_NAME";
1954
1955    // ---------------------------------------------------------------------
1956    // ---------------------------------------------------------------------
1957    // Intent flags (see mFlags variable).
1958
1959    /**
1960     * If set, the recipient of this Intent will be granted permission to
1961     * perform read operations on the Uri in the Intent's data.
1962     */
1963    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
1964    /**
1965     * If set, the recipient of this Intent will be granted permission to
1966     * perform write operations on the Uri in the Intent's data.
1967     */
1968    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
1969    /**
1970     * Can be set by the caller to indicate that this Intent is coming from
1971     * a background operation, not from direct user interaction.
1972     */
1973    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
1974    /**
1975     * A flag you can enable for debugging: when set, log messages will be
1976     * printed during the resolution of this intent to show you what has
1977     * been found to create the final resolved list.
1978     */
1979    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
1980
1981    /**
1982     * If set, the new activity is not kept in the history stack.  As soon as
1983     * the user navigates away from it, the activity is finished.  This may also
1984     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
1985     * noHistory} attribute.
1986     */
1987    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
1988    /**
1989     * If set, the activity will not be launched if it is already running
1990     * at the top of the history stack.
1991     */
1992    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
1993    /**
1994     * If set, this activity will become the start of a new task on this
1995     * history stack.  A task (from the activity that started it to the
1996     * next task activity) defines an atomic group of activities that the
1997     * user can move to.  Tasks can be moved to the foreground and background;
1998     * all of the activities inside of a particular task always remain in
1999     * the same order.  See
2000     * <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2001     * Activities and Tasks</a> for more details on tasks.
2002     *
2003     * <p>This flag is generally used by activities that want
2004     * to present a "launcher" style behavior: they give the user a list of
2005     * separate things that can be done, which otherwise run completely
2006     * independently of the activity launching them.
2007     *
2008     * <p>When using this flag, if a task is already running for the activity
2009     * you are now starting, then a new activity will not be started; instead,
2010     * the current task will simply be brought to the front of the screen with
2011     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
2012     * to disable this behavior.
2013     *
2014     * <p>This flag can not be used when the caller is requesting a result from
2015     * the activity being launched.
2016     */
2017    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
2018    /**
2019     * <strong>Do not use this flag unless you are implementing your own
2020     * top-level application launcher.</strong>  Used in conjunction with
2021     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
2022     * behavior of bringing an existing task to the foreground.  When set,
2023     * a new task is <em>always</em> started to host the Activity for the
2024     * Intent, regardless of whether there is already an existing task running
2025     * the same thing.
2026     *
2027     * <p><strong>Because the default system does not include graphical task management,
2028     * you should not use this flag unless you provide some way for a user to
2029     * return back to the tasks you have launched.</strong>
2030     *
2031     * <p>This flag is ignored if
2032     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
2033     *
2034     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2035     * Activities and Tasks</a> for more details on tasks.
2036     */
2037    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
2038    /**
2039     * If set, and the activity being launched is already running in the
2040     * current task, then instead of launching a new instance of that activity,
2041     * all of the other activities on top of it will be closed and this Intent
2042     * will be delivered to the (now on top) old activity as a new Intent.
2043     *
2044     * <p>For example, consider a task consisting of the activities: A, B, C, D.
2045     * If D calls startActivity() with an Intent that resolves to the component
2046     * of activity B, then C and D will be finished and B receive the given
2047     * Intent, resulting in the stack now being: A, B.
2048     *
2049     * <p>The currently running instance of task B in the above example will
2050     * either receive the new intent you are starting here in its
2051     * onNewIntent() method, or be itself finished and restarted with the
2052     * new intent.  If it has declared its launch mode to be "multiple" (the
2053     * default) it will be finished and re-created; for all other launch modes
2054     * it will receive the Intent in the current instance.
2055     *
2056     * <p>This launch mode can also be used to good effect in conjunction with
2057     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
2058     * of a task, it will bring any currently running instance of that task
2059     * to the foreground, and then clear it to its root state.  This is
2060     * especially useful, for example, when launching an activity from the
2061     * notification manager.
2062     *
2063     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2064     * Activities and Tasks</a> for more details on tasks.
2065     */
2066    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
2067    /**
2068     * If set and this intent is being used to launch a new activity from an
2069     * existing one, then the reply target of the existing activity will be
2070     * transfered to the new activity.  This way the new activity can call
2071     * {@link android.app.Activity#setResult} and have that result sent back to
2072     * the reply target of the original activity.
2073     */
2074    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
2075    /**
2076     * If set and this intent is being used to launch a new activity from an
2077     * existing one, the current activity will not be counted as the top
2078     * activity for deciding whether the new intent should be delivered to
2079     * the top instead of starting a new one.  The previous activity will
2080     * be used as the top, with the assumption being that the current activity
2081     * will finish itself immediately.
2082     */
2083    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
2084    /**
2085     * If set, the new activity is not kept in the list of recently launched
2086     * activities.
2087     */
2088    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
2089    /**
2090     * This flag is not normally set by application code, but set for you by
2091     * the system as described in the
2092     * {@link android.R.styleable#AndroidManifestActivity_launchMode
2093     * launchMode} documentation for the singleTask mode.
2094     */
2095    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
2096    /**
2097     * If set, and this activity is either being started in a new task or
2098     * bringing to the top an existing task, then it will be launched as
2099     * the front door of the task.  This will result in the application of
2100     * any affinities needed to have that task in the proper state (either
2101     * moving activities to or from it), or simply resetting that task to
2102     * its initial state if needed.
2103     */
2104    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
2105    /**
2106     * This flag is not normally set by application code, but set for you by
2107     * the system if this activity is being launched from history
2108     * (longpress home key).
2109     */
2110    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
2111    /**
2112     * If set, this marks a point in the task's activity stack that should
2113     * be cleared when the task is reset.  That is, the next time the task
2114     * is brought to the foreground with
2115     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
2116     * the user re-launching it from home), this activity and all on top of
2117     * it will be finished so that the user does not return to them, but
2118     * instead returns to whatever activity preceeded it.
2119     *
2120     * <p>This is useful for cases where you have a logical break in your
2121     * application.  For example, an e-mail application may have a command
2122     * to view an attachment, which launches an image view activity to
2123     * display it.  This activity should be part of the e-mail application's
2124     * task, since it is a part of the task the user is involved in.  However,
2125     * if the user leaves that task, and later selects the e-mail app from
2126     * home, we may like them to return to the conversation they were
2127     * viewing, not the picture attachment, since that is confusing.  By
2128     * setting this flag when launching the image viewer, that viewer and
2129     * any activities it starts will be removed the next time the user returns
2130     * to mail.
2131     */
2132    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
2133    /**
2134     * If set, this flag will prevent the normal {@link android.app.Activity#onUserLeaveHint}
2135     * callback from occurring on the current frontmost activity before it is
2136     * paused as the newly-started activity is brought to the front.
2137     *
2138     * <p>Typically, an activity can rely on that callback to indicate that an
2139     * explicit user action has caused their activity to be moved out of the
2140     * foreground. The callback marks an appropriate point in the activity's
2141     * lifecycle for it to dismiss any notifications that it intends to display
2142     * "until the user has seen them," such as a blinking LED.
2143     *
2144     * <p>If an activity is ever started via any non-user-driven events such as
2145     * phone-call receipt or an alarm handler, this flag should be passed to {@link
2146     * Context#startActivity Context.startActivity}, ensuring that the pausing
2147     * activity does not think the user has acknowledged its notification.
2148     */
2149    public static final int FLAG_ACTIVITY_NO_USER_ACTION = 0x00040000;
2150    /**
2151     * If set in an Intent passed to {@link Context#startActivity Context.startActivity()},
2152     * this flag will cause the launched activity to be brought to the front of its
2153     * task's history stack if it is already running.
2154     *
2155     * <p>For example, consider a task consisting of four activities: A, B, C, D.
2156     * If D calls startActivity() with an Intent that resolves to the component
2157     * of activity B, then B will be brought to the front of the history stack,
2158     * with this resulting order:  A, C, D, B.
2159     *
2160     * This flag will be ignored if {@link #FLAG_ACTIVITY_CLEAR_TOP} is also
2161     * specified.
2162     */
2163    public static final int FLAG_ACTIVITY_REORDER_TO_FRONT = 0X00020000;
2164    /**
2165     * If set, when sending a broadcast only registered receivers will be
2166     * called -- no BroadcastReceiver components will be launched.
2167     */
2168    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
2169    /**
2170     * If set, when sending a broadcast <i>before boot has completed</i> only
2171     * registered receivers will be called -- no BroadcastReceiver components
2172     * will be launched.  Sticky intent state will be recorded properly even
2173     * if no receivers wind up being called.  If {@link #FLAG_RECEIVER_REGISTERED_ONLY}
2174     * is specified in the broadcast intent, this flag is unnecessary.
2175     *
2176     * <p>This flag is only for use by system sevices as a convenience to
2177     * avoid having to implement a more complex mechanism around detection
2178     * of boot completion.
2179     *
2180     * @hide
2181     */
2182    public static final int FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT = 0x20000000;
2183
2184    // ---------------------------------------------------------------------
2185    // ---------------------------------------------------------------------
2186    // toUri() and parseUri() options.
2187
2188    /**
2189     * Flag for use with {@link #toUri} and {@link #parseUri}: the URI string
2190     * always has the "intent:" scheme.  This syntax can be used when you want
2191     * to later disambiguate between URIs that are intended to describe an
2192     * Intent vs. all others that should be treated as raw URIs.  When used
2193     * with {@link #parseUri}, any other scheme will result in a generic
2194     * VIEW action for that raw URI.
2195     */
2196    public static final int URI_INTENT_SCHEME = 1<<0;
2197
2198    // ---------------------------------------------------------------------
2199
2200    private String mAction;
2201    private Uri mData;
2202    private String mType;
2203    private String mPackage;
2204    private ComponentName mComponent;
2205    private int mFlags;
2206    private HashSet<String> mCategories;
2207    private Bundle mExtras;
2208
2209    // ---------------------------------------------------------------------
2210
2211    /**
2212     * Create an empty intent.
2213     */
2214    public Intent() {
2215    }
2216
2217    /**
2218     * Copy constructor.
2219     */
2220    public Intent(Intent o) {
2221        this.mAction = o.mAction;
2222        this.mData = o.mData;
2223        this.mType = o.mType;
2224        this.mPackage = o.mPackage;
2225        this.mComponent = o.mComponent;
2226        this.mFlags = o.mFlags;
2227        if (o.mCategories != null) {
2228            this.mCategories = new HashSet<String>(o.mCategories);
2229        }
2230        if (o.mExtras != null) {
2231            this.mExtras = new Bundle(o.mExtras);
2232        }
2233    }
2234
2235    @Override
2236    public Object clone() {
2237        return new Intent(this);
2238    }
2239
2240    private Intent(Intent o, boolean all) {
2241        this.mAction = o.mAction;
2242        this.mData = o.mData;
2243        this.mType = o.mType;
2244        this.mPackage = o.mPackage;
2245        this.mComponent = o.mComponent;
2246        if (o.mCategories != null) {
2247            this.mCategories = new HashSet<String>(o.mCategories);
2248        }
2249    }
2250
2251    /**
2252     * Make a clone of only the parts of the Intent that are relevant for
2253     * filter matching: the action, data, type, component, and categories.
2254     */
2255    public Intent cloneFilter() {
2256        return new Intent(this, false);
2257    }
2258
2259    /**
2260     * Create an intent with a given action.  All other fields (data, type,
2261     * class) are null.  Note that the action <em>must</em> be in a
2262     * namespace because Intents are used globally in the system -- for
2263     * example the system VIEW action is android.intent.action.VIEW; an
2264     * application's custom action would be something like
2265     * com.google.app.myapp.CUSTOM_ACTION.
2266     *
2267     * @param action The Intent action, such as ACTION_VIEW.
2268     */
2269    public Intent(String action) {
2270        mAction = action;
2271    }
2272
2273    /**
2274     * Create an intent with a given action and for a given data url.  Note
2275     * that the action <em>must</em> be in a namespace because Intents are
2276     * used globally in the system -- for example the system VIEW action is
2277     * android.intent.action.VIEW; an application's custom action would be
2278     * something like com.google.app.myapp.CUSTOM_ACTION.
2279     *
2280     * <p><em>Note: scheme and host name matching in the Android framework is
2281     * case-sensitive, unlike the formal RFC.  As a result,
2282     * you should always ensure that you write your Uri with these elements
2283     * using lower case letters, and normalize any Uris you receive from
2284     * outside of Android to ensure the scheme and host is lower case.</em></p>
2285     *
2286     * @param action The Intent action, such as ACTION_VIEW.
2287     * @param uri The Intent data URI.
2288     */
2289    public Intent(String action, Uri uri) {
2290        mAction = action;
2291        mData = uri;
2292    }
2293
2294    /**
2295     * Create an intent for a specific component.  All other fields (action, data,
2296     * type, class) are null, though they can be modified later with explicit
2297     * calls.  This provides a convenient way to create an intent that is
2298     * intended to execute a hard-coded class name, rather than relying on the
2299     * system to find an appropriate class for you; see {@link #setComponent}
2300     * for more information on the repercussions of this.
2301     *
2302     * @param packageContext A Context of the application package implementing
2303     * this class.
2304     * @param cls The component class that is to be used for the intent.
2305     *
2306     * @see #setClass
2307     * @see #setComponent
2308     * @see #Intent(String, android.net.Uri , Context, Class)
2309     */
2310    public Intent(Context packageContext, Class<?> cls) {
2311        mComponent = new ComponentName(packageContext, cls);
2312    }
2313
2314    /**
2315     * Create an intent for a specific component with a specified action and data.
2316     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
2317     * construct the Intent and then calling {@link #setClass} to set its
2318     * class.
2319     *
2320     * <p><em>Note: scheme and host name matching in the Android framework is
2321     * case-sensitive, unlike the formal RFC.  As a result,
2322     * you should always ensure that you write your Uri with these elements
2323     * using lower case letters, and normalize any Uris you receive from
2324     * outside of Android to ensure the scheme and host is lower case.</em></p>
2325     *
2326     * @param action The Intent action, such as ACTION_VIEW.
2327     * @param uri The Intent data URI.
2328     * @param packageContext A Context of the application package implementing
2329     * this class.
2330     * @param cls The component class that is to be used for the intent.
2331     *
2332     * @see #Intent(String, android.net.Uri)
2333     * @see #Intent(Context, Class)
2334     * @see #setClass
2335     * @see #setComponent
2336     */
2337    public Intent(String action, Uri uri,
2338            Context packageContext, Class<?> cls) {
2339        mAction = action;
2340        mData = uri;
2341        mComponent = new ComponentName(packageContext, cls);
2342    }
2343
2344    /**
2345     * Call {@link #parseUri} with 0 flags.
2346     * @deprecated Use {@link #parseUri} instead.
2347     */
2348    @Deprecated
2349    public static Intent getIntent(String uri) throws URISyntaxException {
2350        return parseUri(uri, 0);
2351    }
2352
2353    /**
2354     * Create an intent from a URI.  This URI may encode the action,
2355     * category, and other intent fields, if it was returned by
2356     * {@link #toUri}..  If the Intent was not generate by toUri(), its data
2357     * will be the entire URI and its action will be ACTION_VIEW.
2358     *
2359     * <p>The URI given here must not be relative -- that is, it must include
2360     * the scheme and full path.
2361     *
2362     * @param uri The URI to turn into an Intent.
2363     * @param flags Additional processing flags.  Either 0 or
2364     *
2365     * @return Intent The newly created Intent object.
2366     *
2367     * @throws URISyntaxException Throws URISyntaxError if the basic URI syntax
2368     * it bad (as parsed by the Uri class) or the Intent data within the
2369     * URI is invalid.
2370     *
2371     * @see #toUri
2372     */
2373    public static Intent parseUri(String uri, int flags) throws URISyntaxException {
2374        int i = 0;
2375        try {
2376            // Validate intent scheme for if requested.
2377            if ((flags&URI_INTENT_SCHEME) != 0) {
2378                if (!uri.startsWith("intent:")) {
2379                    Intent intent = new Intent(ACTION_VIEW);
2380                    try {
2381                        intent.setData(Uri.parse(uri));
2382                    } catch (IllegalArgumentException e) {
2383                        throw new URISyntaxException(uri, e.getMessage());
2384                    }
2385                    return intent;
2386                }
2387            }
2388
2389            // simple case
2390            i = uri.lastIndexOf("#");
2391            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2392
2393            // old format Intent URI
2394            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2395
2396            // new format
2397            Intent intent = new Intent(ACTION_VIEW);
2398
2399            // fetch data part, if present
2400            String data = i >= 0 ? uri.substring(0, i) : null;
2401            String scheme = null;
2402            i += "#Intent;".length();
2403
2404            // loop over contents of Intent, all name=value;
2405            while (!uri.startsWith("end", i)) {
2406                int eq = uri.indexOf('=', i);
2407                int semi = uri.indexOf(';', eq);
2408                String value = Uri.decode(uri.substring(eq + 1, semi));
2409
2410                // action
2411                if (uri.startsWith("action=", i)) {
2412                    intent.mAction = value;
2413                }
2414
2415                // categories
2416                else if (uri.startsWith("category=", i)) {
2417                    intent.addCategory(value);
2418                }
2419
2420                // type
2421                else if (uri.startsWith("type=", i)) {
2422                    intent.mType = value;
2423                }
2424
2425                // launch  flags
2426                else if (uri.startsWith("launchFlags=", i)) {
2427                    intent.mFlags = Integer.decode(value).intValue();
2428                }
2429
2430                // package
2431                else if (uri.startsWith("package=", i)) {
2432                    intent.mPackage = value;
2433                }
2434
2435                // component
2436                else if (uri.startsWith("component=", i)) {
2437                    intent.mComponent = ComponentName.unflattenFromString(value);
2438                }
2439
2440                // scheme
2441                else if (uri.startsWith("scheme=", i)) {
2442                    scheme = value;
2443                }
2444
2445                // extra
2446                else {
2447                    String key = Uri.decode(uri.substring(i + 2, eq));
2448                    // create Bundle if it doesn't already exist
2449                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2450                    Bundle b = intent.mExtras;
2451                    // add EXTRA
2452                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2453                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2454                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2455                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2456                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2457                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2458                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2459                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2460                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2461                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2462                }
2463
2464                // move to the next item
2465                i = semi + 1;
2466            }
2467
2468            if (data != null) {
2469                if (data.startsWith("intent:")) {
2470                    data = data.substring(7);
2471                    if (scheme != null) {
2472                        data = scheme + ':' + data;
2473                    }
2474                }
2475
2476                if (data.length() > 0) {
2477                    try {
2478                        intent.mData = Uri.parse(data);
2479                    } catch (IllegalArgumentException e) {
2480                        throw new URISyntaxException(uri, e.getMessage());
2481                    }
2482                }
2483            }
2484
2485            return intent;
2486
2487        } catch (IndexOutOfBoundsException e) {
2488            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2489        }
2490    }
2491
2492    public static Intent getIntentOld(String uri) throws URISyntaxException {
2493        Intent intent;
2494
2495        int i = uri.lastIndexOf('#');
2496        if (i >= 0) {
2497            Uri data = null;
2498            String action = null;
2499            if (i > 0) {
2500                data = Uri.parse(uri.substring(0, i));
2501            }
2502
2503            i++;
2504
2505            if (uri.regionMatches(i, "action(", 0, 7)) {
2506                i += 7;
2507                int j = uri.indexOf(')', i);
2508                action = uri.substring(i, j);
2509                i = j + 1;
2510            }
2511
2512            intent = new Intent(action, data);
2513
2514            if (uri.regionMatches(i, "categories(", 0, 11)) {
2515                i += 11;
2516                int j = uri.indexOf(')', i);
2517                while (i < j) {
2518                    int sep = uri.indexOf('!', i);
2519                    if (sep < 0) sep = j;
2520                    if (i < sep) {
2521                        intent.addCategory(uri.substring(i, sep));
2522                    }
2523                    i = sep + 1;
2524                }
2525                i = j + 1;
2526            }
2527
2528            if (uri.regionMatches(i, "type(", 0, 5)) {
2529                i += 5;
2530                int j = uri.indexOf(')', i);
2531                intent.mType = uri.substring(i, j);
2532                i = j + 1;
2533            }
2534
2535            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2536                i += 12;
2537                int j = uri.indexOf(')', i);
2538                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2539                i = j + 1;
2540            }
2541
2542            if (uri.regionMatches(i, "component(", 0, 10)) {
2543                i += 10;
2544                int j = uri.indexOf(')', i);
2545                int sep = uri.indexOf('!', i);
2546                if (sep >= 0 && sep < j) {
2547                    String pkg = uri.substring(i, sep);
2548                    String cls = uri.substring(sep + 1, j);
2549                    intent.mComponent = new ComponentName(pkg, cls);
2550                }
2551                i = j + 1;
2552            }
2553
2554            if (uri.regionMatches(i, "extras(", 0, 7)) {
2555                i += 7;
2556
2557                final int closeParen = uri.indexOf(')', i);
2558                if (closeParen == -1) throw new URISyntaxException(uri,
2559                        "EXTRA missing trailing ')'", i);
2560
2561                while (i < closeParen) {
2562                    // fetch the key value
2563                    int j = uri.indexOf('=', i);
2564                    if (j <= i + 1 || i >= closeParen) {
2565                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2566                    }
2567                    char type = uri.charAt(i);
2568                    i++;
2569                    String key = uri.substring(i, j);
2570                    i = j + 1;
2571
2572                    // get type-value
2573                    j = uri.indexOf('!', i);
2574                    if (j == -1 || j >= closeParen) j = closeParen;
2575                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2576                    String value = uri.substring(i, j);
2577                    i = j;
2578
2579                    // create Bundle if it doesn't already exist
2580                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2581
2582                    // add item to bundle
2583                    try {
2584                        switch (type) {
2585                            case 'S':
2586                                intent.mExtras.putString(key, Uri.decode(value));
2587                                break;
2588                            case 'B':
2589                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2590                                break;
2591                            case 'b':
2592                                intent.mExtras.putByte(key, Byte.parseByte(value));
2593                                break;
2594                            case 'c':
2595                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2596                                break;
2597                            case 'd':
2598                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2599                                break;
2600                            case 'f':
2601                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2602                                break;
2603                            case 'i':
2604                                intent.mExtras.putInt(key, Integer.parseInt(value));
2605                                break;
2606                            case 'l':
2607                                intent.mExtras.putLong(key, Long.parseLong(value));
2608                                break;
2609                            case 's':
2610                                intent.mExtras.putShort(key, Short.parseShort(value));
2611                                break;
2612                            default:
2613                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2614                        }
2615                    } catch (NumberFormatException e) {
2616                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2617                    }
2618
2619                    char ch = uri.charAt(i);
2620                    if (ch == ')') break;
2621                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2622                    i++;
2623                }
2624            }
2625
2626            if (intent.mAction == null) {
2627                // By default, if no action is specified, then use VIEW.
2628                intent.mAction = ACTION_VIEW;
2629            }
2630
2631        } else {
2632            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2633        }
2634
2635        return intent;
2636    }
2637
2638    /**
2639     * Retrieve the general action to be performed, such as
2640     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2641     * the information in the intent should be interpreted -- most importantly,
2642     * what to do with the data returned by {@link #getData}.
2643     *
2644     * @return The action of this intent or null if none is specified.
2645     *
2646     * @see #setAction
2647     */
2648    public String getAction() {
2649        return mAction;
2650    }
2651
2652    /**
2653     * Retrieve data this intent is operating on.  This URI specifies the name
2654     * of the data; often it uses the content: scheme, specifying data in a
2655     * content provider.  Other schemes may be handled by specific activities,
2656     * such as http: by the web browser.
2657     *
2658     * @return The URI of the data this intent is targeting or null.
2659     *
2660     * @see #getScheme
2661     * @see #setData
2662     */
2663    public Uri getData() {
2664        return mData;
2665    }
2666
2667    /**
2668     * The same as {@link #getData()}, but returns the URI as an encoded
2669     * String.
2670     */
2671    public String getDataString() {
2672        return mData != null ? mData.toString() : null;
2673    }
2674
2675    /**
2676     * Return the scheme portion of the intent's data.  If the data is null or
2677     * does not include a scheme, null is returned.  Otherwise, the scheme
2678     * prefix without the final ':' is returned, i.e. "http".
2679     *
2680     * <p>This is the same as calling getData().getScheme() (and checking for
2681     * null data).
2682     *
2683     * @return The scheme of this intent.
2684     *
2685     * @see #getData
2686     */
2687    public String getScheme() {
2688        return mData != null ? mData.getScheme() : null;
2689    }
2690
2691    /**
2692     * Retrieve any explicit MIME type included in the intent.  This is usually
2693     * null, as the type is determined by the intent data.
2694     *
2695     * @return If a type was manually set, it is returned; else null is
2696     *         returned.
2697     *
2698     * @see #resolveType(ContentResolver)
2699     * @see #setType
2700     */
2701    public String getType() {
2702        return mType;
2703    }
2704
2705    /**
2706     * Return the MIME data type of this intent.  If the type field is
2707     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2708     * the type of that data is returned.  If neither fields are set, a null is
2709     * returned.
2710     *
2711     * @return The MIME type of this intent.
2712     *
2713     * @see #getType
2714     * @see #resolveType(ContentResolver)
2715     */
2716    public String resolveType(Context context) {
2717        return resolveType(context.getContentResolver());
2718    }
2719
2720    /**
2721     * Return the MIME data type of this intent.  If the type field is
2722     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2723     * the type of that data is returned.  If neither fields are set, a null is
2724     * returned.
2725     *
2726     * @param resolver A ContentResolver that can be used to determine the MIME
2727     *                 type of the intent's data.
2728     *
2729     * @return The MIME type of this intent.
2730     *
2731     * @see #getType
2732     * @see #resolveType(Context)
2733     */
2734    public String resolveType(ContentResolver resolver) {
2735        if (mType != null) {
2736            return mType;
2737        }
2738        if (mData != null) {
2739            if ("content".equals(mData.getScheme())) {
2740                return resolver.getType(mData);
2741            }
2742        }
2743        return null;
2744    }
2745
2746    /**
2747     * Return the MIME data type of this intent, only if it will be needed for
2748     * intent resolution.  This is not generally useful for application code;
2749     * it is used by the frameworks for communicating with back-end system
2750     * services.
2751     *
2752     * @param resolver A ContentResolver that can be used to determine the MIME
2753     *                 type of the intent's data.
2754     *
2755     * @return The MIME type of this intent, or null if it is unknown or not
2756     *         needed.
2757     */
2758    public String resolveTypeIfNeeded(ContentResolver resolver) {
2759        if (mComponent != null) {
2760            return mType;
2761        }
2762        return resolveType(resolver);
2763    }
2764
2765    /**
2766     * Check if an category exists in the intent.
2767     *
2768     * @param category The category to check.
2769     *
2770     * @return boolean True if the intent contains the category, else false.
2771     *
2772     * @see #getCategories
2773     * @see #addCategory
2774     */
2775    public boolean hasCategory(String category) {
2776        return mCategories != null && mCategories.contains(category);
2777    }
2778
2779    /**
2780     * Return the set of all categories in the intent.  If there are no categories,
2781     * returns NULL.
2782     *
2783     * @return Set The set of categories you can examine.  Do not modify!
2784     *
2785     * @see #hasCategory
2786     * @see #addCategory
2787     */
2788    public Set<String> getCategories() {
2789        return mCategories;
2790    }
2791
2792    /**
2793     * Sets the ClassLoader that will be used when unmarshalling
2794     * any Parcelable values from the extras of this Intent.
2795     *
2796     * @param loader a ClassLoader, or null to use the default loader
2797     * at the time of unmarshalling.
2798     */
2799    public void setExtrasClassLoader(ClassLoader loader) {
2800        if (mExtras != null) {
2801            mExtras.setClassLoader(loader);
2802        }
2803    }
2804
2805    /**
2806     * Returns true if an extra value is associated with the given name.
2807     * @param name the extra's name
2808     * @return true if the given extra is present.
2809     */
2810    public boolean hasExtra(String name) {
2811        return mExtras != null && mExtras.containsKey(name);
2812    }
2813
2814    /**
2815     * Returns true if the Intent's extras contain a parcelled file descriptor.
2816     * @return true if the Intent contains a parcelled file descriptor.
2817     */
2818    public boolean hasFileDescriptors() {
2819        return mExtras != null && mExtras.hasFileDescriptors();
2820    }
2821
2822    /**
2823     * Retrieve extended data from the intent.
2824     *
2825     * @param name The name of the desired item.
2826     *
2827     * @return the value of an item that previously added with putExtra()
2828     * or null if none was found.
2829     *
2830     * @deprecated
2831     * @hide
2832     */
2833    @Deprecated
2834    public Object getExtra(String name) {
2835        return getExtra(name, null);
2836    }
2837
2838    /**
2839     * Retrieve extended data from the intent.
2840     *
2841     * @param name The name of the desired item.
2842     * @param defaultValue the value to be returned if no value of the desired
2843     * type is stored with the given name.
2844     *
2845     * @return the value of an item that previously added with putExtra()
2846     * or the default value if none was found.
2847     *
2848     * @see #putExtra(String, boolean)
2849     */
2850    public boolean getBooleanExtra(String name, boolean defaultValue) {
2851        return mExtras == null ? defaultValue :
2852            mExtras.getBoolean(name, defaultValue);
2853    }
2854
2855    /**
2856     * Retrieve extended data from the intent.
2857     *
2858     * @param name The name of the desired item.
2859     * @param defaultValue the value to be returned if no value of the desired
2860     * type is stored with the given name.
2861     *
2862     * @return the value of an item that previously added with putExtra()
2863     * or the default value if none was found.
2864     *
2865     * @see #putExtra(String, byte)
2866     */
2867    public byte getByteExtra(String name, byte defaultValue) {
2868        return mExtras == null ? defaultValue :
2869            mExtras.getByte(name, defaultValue);
2870    }
2871
2872    /**
2873     * Retrieve extended data from the intent.
2874     *
2875     * @param name The name of the desired item.
2876     * @param defaultValue the value to be returned if no value of the desired
2877     * type is stored with the given name.
2878     *
2879     * @return the value of an item that previously added with putExtra()
2880     * or the default value if none was found.
2881     *
2882     * @see #putExtra(String, short)
2883     */
2884    public short getShortExtra(String name, short defaultValue) {
2885        return mExtras == null ? defaultValue :
2886            mExtras.getShort(name, defaultValue);
2887    }
2888
2889    /**
2890     * Retrieve extended data from the intent.
2891     *
2892     * @param name The name of the desired item.
2893     * @param defaultValue the value to be returned if no value of the desired
2894     * type is stored with the given name.
2895     *
2896     * @return the value of an item that previously added with putExtra()
2897     * or the default value if none was found.
2898     *
2899     * @see #putExtra(String, char)
2900     */
2901    public char getCharExtra(String name, char defaultValue) {
2902        return mExtras == null ? defaultValue :
2903            mExtras.getChar(name, defaultValue);
2904    }
2905
2906    /**
2907     * Retrieve extended data from the intent.
2908     *
2909     * @param name The name of the desired item.
2910     * @param defaultValue the value to be returned if no value of the desired
2911     * type is stored with the given name.
2912     *
2913     * @return the value of an item that previously added with putExtra()
2914     * or the default value if none was found.
2915     *
2916     * @see #putExtra(String, int)
2917     */
2918    public int getIntExtra(String name, int defaultValue) {
2919        return mExtras == null ? defaultValue :
2920            mExtras.getInt(name, defaultValue);
2921    }
2922
2923    /**
2924     * Retrieve extended data from the intent.
2925     *
2926     * @param name The name of the desired item.
2927     * @param defaultValue the value to be returned if no value of the desired
2928     * type is stored with the given name.
2929     *
2930     * @return the value of an item that previously added with putExtra()
2931     * or the default value if none was found.
2932     *
2933     * @see #putExtra(String, long)
2934     */
2935    public long getLongExtra(String name, long defaultValue) {
2936        return mExtras == null ? defaultValue :
2937            mExtras.getLong(name, defaultValue);
2938    }
2939
2940    /**
2941     * Retrieve extended data from the intent.
2942     *
2943     * @param name The name of the desired item.
2944     * @param defaultValue the value to be returned if no value of the desired
2945     * type is stored with the given name.
2946     *
2947     * @return the value of an item that previously added with putExtra(),
2948     * or the default value if no such item is present
2949     *
2950     * @see #putExtra(String, float)
2951     */
2952    public float getFloatExtra(String name, float defaultValue) {
2953        return mExtras == null ? defaultValue :
2954            mExtras.getFloat(name, defaultValue);
2955    }
2956
2957    /**
2958     * Retrieve extended data from the intent.
2959     *
2960     * @param name The name of the desired item.
2961     * @param defaultValue the value to be returned if no value of the desired
2962     * type is stored with the given name.
2963     *
2964     * @return the value of an item that previously added with putExtra()
2965     * or the default value if none was found.
2966     *
2967     * @see #putExtra(String, double)
2968     */
2969    public double getDoubleExtra(String name, double defaultValue) {
2970        return mExtras == null ? defaultValue :
2971            mExtras.getDouble(name, defaultValue);
2972    }
2973
2974    /**
2975     * Retrieve extended data from the intent.
2976     *
2977     * @param name The name of the desired item.
2978     *
2979     * @return the value of an item that previously added with putExtra()
2980     * or null if no String value was found.
2981     *
2982     * @see #putExtra(String, String)
2983     */
2984    public String getStringExtra(String name) {
2985        return mExtras == null ? null : mExtras.getString(name);
2986    }
2987
2988    /**
2989     * Retrieve extended data from the intent.
2990     *
2991     * @param name The name of the desired item.
2992     *
2993     * @return the value of an item that previously added with putExtra()
2994     * or null if no CharSequence value was found.
2995     *
2996     * @see #putExtra(String, CharSequence)
2997     */
2998    public CharSequence getCharSequenceExtra(String name) {
2999        return mExtras == null ? null : mExtras.getCharSequence(name);
3000    }
3001
3002    /**
3003     * Retrieve extended data from the intent.
3004     *
3005     * @param name The name of the desired item.
3006     *
3007     * @return the value of an item that previously added with putExtra()
3008     * or null if no Parcelable value was found.
3009     *
3010     * @see #putExtra(String, Parcelable)
3011     */
3012    public <T extends Parcelable> T getParcelableExtra(String name) {
3013        return mExtras == null ? null : mExtras.<T>getParcelable(name);
3014    }
3015
3016    /**
3017     * Retrieve extended data from the intent.
3018     *
3019     * @param name The name of the desired item.
3020     *
3021     * @return the value of an item that previously added with putExtra()
3022     * or null if no Parcelable[] value was found.
3023     *
3024     * @see #putExtra(String, Parcelable[])
3025     */
3026    public Parcelable[] getParcelableArrayExtra(String name) {
3027        return mExtras == null ? null : mExtras.getParcelableArray(name);
3028    }
3029
3030    /**
3031     * Retrieve extended data from the intent.
3032     *
3033     * @param name The name of the desired item.
3034     *
3035     * @return the value of an item that previously added with putExtra()
3036     * or null if no ArrayList<Parcelable> value was found.
3037     *
3038     * @see #putParcelableArrayListExtra(String, ArrayList)
3039     */
3040    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
3041        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
3042    }
3043
3044    /**
3045     * Retrieve extended data from the intent.
3046     *
3047     * @param name The name of the desired item.
3048     *
3049     * @return the value of an item that previously added with putExtra()
3050     * or null if no Serializable value was found.
3051     *
3052     * @see #putExtra(String, Serializable)
3053     */
3054    public Serializable getSerializableExtra(String name) {
3055        return mExtras == null ? null : mExtras.getSerializable(name);
3056    }
3057
3058    /**
3059     * Retrieve extended data from the intent.
3060     *
3061     * @param name The name of the desired item.
3062     *
3063     * @return the value of an item that previously added with putExtra()
3064     * or null if no ArrayList<Integer> value was found.
3065     *
3066     * @see #putIntegerArrayListExtra(String, ArrayList)
3067     */
3068    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
3069        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
3070    }
3071
3072    /**
3073     * Retrieve extended data from the intent.
3074     *
3075     * @param name The name of the desired item.
3076     *
3077     * @return the value of an item that previously added with putExtra()
3078     * or null if no ArrayList<String> value was found.
3079     *
3080     * @see #putStringArrayListExtra(String, ArrayList)
3081     */
3082    public ArrayList<String> getStringArrayListExtra(String name) {
3083        return mExtras == null ? null : mExtras.getStringArrayList(name);
3084    }
3085
3086    /**
3087     * Retrieve extended data from the intent.
3088     *
3089     * @param name The name of the desired item.
3090     *
3091     * @return the value of an item that previously added with putExtra()
3092     * or null if no boolean array value was found.
3093     *
3094     * @see #putExtra(String, boolean[])
3095     */
3096    public boolean[] getBooleanArrayExtra(String name) {
3097        return mExtras == null ? null : mExtras.getBooleanArray(name);
3098    }
3099
3100    /**
3101     * Retrieve extended data from the intent.
3102     *
3103     * @param name The name of the desired item.
3104     *
3105     * @return the value of an item that previously added with putExtra()
3106     * or null if no byte array value was found.
3107     *
3108     * @see #putExtra(String, byte[])
3109     */
3110    public byte[] getByteArrayExtra(String name) {
3111        return mExtras == null ? null : mExtras.getByteArray(name);
3112    }
3113
3114    /**
3115     * Retrieve extended data from the intent.
3116     *
3117     * @param name The name of the desired item.
3118     *
3119     * @return the value of an item that previously added with putExtra()
3120     * or null if no short array value was found.
3121     *
3122     * @see #putExtra(String, short[])
3123     */
3124    public short[] getShortArrayExtra(String name) {
3125        return mExtras == null ? null : mExtras.getShortArray(name);
3126    }
3127
3128    /**
3129     * Retrieve extended data from the intent.
3130     *
3131     * @param name The name of the desired item.
3132     *
3133     * @return the value of an item that previously added with putExtra()
3134     * or null if no char array value was found.
3135     *
3136     * @see #putExtra(String, char[])
3137     */
3138    public char[] getCharArrayExtra(String name) {
3139        return mExtras == null ? null : mExtras.getCharArray(name);
3140    }
3141
3142    /**
3143     * Retrieve extended data from the intent.
3144     *
3145     * @param name The name of the desired item.
3146     *
3147     * @return the value of an item that previously added with putExtra()
3148     * or null if no int array value was found.
3149     *
3150     * @see #putExtra(String, int[])
3151     */
3152    public int[] getIntArrayExtra(String name) {
3153        return mExtras == null ? null : mExtras.getIntArray(name);
3154    }
3155
3156    /**
3157     * Retrieve extended data from the intent.
3158     *
3159     * @param name The name of the desired item.
3160     *
3161     * @return the value of an item that previously added with putExtra()
3162     * or null if no long array value was found.
3163     *
3164     * @see #putExtra(String, long[])
3165     */
3166    public long[] getLongArrayExtra(String name) {
3167        return mExtras == null ? null : mExtras.getLongArray(name);
3168    }
3169
3170    /**
3171     * Retrieve extended data from the intent.
3172     *
3173     * @param name The name of the desired item.
3174     *
3175     * @return the value of an item that previously added with putExtra()
3176     * or null if no float array value was found.
3177     *
3178     * @see #putExtra(String, float[])
3179     */
3180    public float[] getFloatArrayExtra(String name) {
3181        return mExtras == null ? null : mExtras.getFloatArray(name);
3182    }
3183
3184    /**
3185     * Retrieve extended data from the intent.
3186     *
3187     * @param name The name of the desired item.
3188     *
3189     * @return the value of an item that previously added with putExtra()
3190     * or null if no double array value was found.
3191     *
3192     * @see #putExtra(String, double[])
3193     */
3194    public double[] getDoubleArrayExtra(String name) {
3195        return mExtras == null ? null : mExtras.getDoubleArray(name);
3196    }
3197
3198    /**
3199     * Retrieve extended data from the intent.
3200     *
3201     * @param name The name of the desired item.
3202     *
3203     * @return the value of an item that previously added with putExtra()
3204     * or null if no String array value was found.
3205     *
3206     * @see #putExtra(String, String[])
3207     */
3208    public String[] getStringArrayExtra(String name) {
3209        return mExtras == null ? null : mExtras.getStringArray(name);
3210    }
3211
3212    /**
3213     * Retrieve extended data from the intent.
3214     *
3215     * @param name The name of the desired item.
3216     *
3217     * @return the value of an item that previously added with putExtra()
3218     * or null if no Bundle value was found.
3219     *
3220     * @see #putExtra(String, Bundle)
3221     */
3222    public Bundle getBundleExtra(String name) {
3223        return mExtras == null ? null : mExtras.getBundle(name);
3224    }
3225
3226    /**
3227     * Retrieve extended data from the intent.
3228     *
3229     * @param name The name of the desired item.
3230     *
3231     * @return the value of an item that previously added with putExtra()
3232     * or null if no IBinder value was found.
3233     *
3234     * @see #putExtra(String, IBinder)
3235     *
3236     * @deprecated
3237     * @hide
3238     */
3239    @Deprecated
3240    public IBinder getIBinderExtra(String name) {
3241        return mExtras == null ? null : mExtras.getIBinder(name);
3242    }
3243
3244    /**
3245     * Retrieve extended data from the intent.
3246     *
3247     * @param name The name of the desired item.
3248     * @param defaultValue The default value to return in case no item is
3249     * associated with the key 'name'
3250     *
3251     * @return the value of an item that previously added with putExtra()
3252     * or defaultValue if none was found.
3253     *
3254     * @see #putExtra
3255     *
3256     * @deprecated
3257     * @hide
3258     */
3259    @Deprecated
3260    public Object getExtra(String name, Object defaultValue) {
3261        Object result = defaultValue;
3262        if (mExtras != null) {
3263            Object result2 = mExtras.get(name);
3264            if (result2 != null) {
3265                result = result2;
3266            }
3267        }
3268
3269        return result;
3270    }
3271
3272    /**
3273     * Retrieves a map of extended data from the intent.
3274     *
3275     * @return the map of all extras previously added with putExtra(),
3276     * or null if none have been added.
3277     */
3278    public Bundle getExtras() {
3279        return (mExtras != null)
3280                ? new Bundle(mExtras)
3281                : null;
3282    }
3283
3284    /**
3285     * Retrieve any special flags associated with this intent.  You will
3286     * normally just set them with {@link #setFlags} and let the system
3287     * take the appropriate action with them.
3288     *
3289     * @return int The currently set flags.
3290     *
3291     * @see #setFlags
3292     */
3293    public int getFlags() {
3294        return mFlags;
3295    }
3296
3297    /**
3298     * Retrieve the application package name this Intent is limited to.  When
3299     * resolving an Intent, if non-null this limits the resolution to only
3300     * components in the given application package.
3301     *
3302     * @return The name of the application package for the Intent.
3303     *
3304     * @see #resolveActivity
3305     * @see #setPackage
3306     */
3307    public String getPackage() {
3308        return mPackage;
3309    }
3310
3311    /**
3312     * Retrieve the concrete component associated with the intent.  When receiving
3313     * an intent, this is the component that was found to best handle it (that is,
3314     * yourself) and will always be non-null; in all other cases it will be
3315     * null unless explicitly set.
3316     *
3317     * @return The name of the application component to handle the intent.
3318     *
3319     * @see #resolveActivity
3320     * @see #setComponent
3321     */
3322    public ComponentName getComponent() {
3323        return mComponent;
3324    }
3325
3326    /**
3327     * Return the Activity component that should be used to handle this intent.
3328     * The appropriate component is determined based on the information in the
3329     * intent, evaluated as follows:
3330     *
3331     * <p>If {@link #getComponent} returns an explicit class, that is returned
3332     * without any further consideration.
3333     *
3334     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
3335     * category to be considered.
3336     *
3337     * <p>If {@link #getAction} is non-NULL, the activity must handle this
3338     * action.
3339     *
3340     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
3341     * this type.
3342     *
3343     * <p>If {@link #addCategory} has added any categories, the activity must
3344     * handle ALL of the categories specified.
3345     *
3346     * <p>If {@link #getPackage} is non-NULL, only activity components in
3347     * that application package will be considered.
3348     *
3349     * <p>If there are no activities that satisfy all of these conditions, a
3350     * null string is returned.
3351     *
3352     * <p>If multiple activities are found to satisfy the intent, the one with
3353     * the highest priority will be used.  If there are multiple activities
3354     * with the same priority, the system will either pick the best activity
3355     * based on user preference, or resolve to a system class that will allow
3356     * the user to pick an activity and forward from there.
3357     *
3358     * <p>This method is implemented simply by calling
3359     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
3360     * true.</p>
3361     * <p> This API is called for you as part of starting an activity from an
3362     * intent.  You do not normally need to call it yourself.</p>
3363     *
3364     * @param pm The package manager with which to resolve the Intent.
3365     *
3366     * @return Name of the component implementing an activity that can
3367     *         display the intent.
3368     *
3369     * @see #setComponent
3370     * @see #getComponent
3371     * @see #resolveActivityInfo
3372     */
3373    public ComponentName resolveActivity(PackageManager pm) {
3374        if (mComponent != null) {
3375            return mComponent;
3376        }
3377
3378        ResolveInfo info = pm.resolveActivity(
3379            this, PackageManager.MATCH_DEFAULT_ONLY);
3380        if (info != null) {
3381            return new ComponentName(
3382                    info.activityInfo.applicationInfo.packageName,
3383                    info.activityInfo.name);
3384        }
3385
3386        return null;
3387    }
3388
3389    /**
3390     * Resolve the Intent into an {@link ActivityInfo}
3391     * describing the activity that should execute the intent.  Resolution
3392     * follows the same rules as described for {@link #resolveActivity}, but
3393     * you get back the completely information about the resolved activity
3394     * instead of just its class name.
3395     *
3396     * @param pm The package manager with which to resolve the Intent.
3397     * @param flags Addition information to retrieve as per
3398     * {@link PackageManager#getActivityInfo(ComponentName, int)
3399     * PackageManager.getActivityInfo()}.
3400     *
3401     * @return PackageManager.ActivityInfo
3402     *
3403     * @see #resolveActivity
3404     */
3405    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
3406        ActivityInfo ai = null;
3407        if (mComponent != null) {
3408            try {
3409                ai = pm.getActivityInfo(mComponent, flags);
3410            } catch (PackageManager.NameNotFoundException e) {
3411                // ignore
3412            }
3413        } else {
3414            ResolveInfo info = pm.resolveActivity(
3415                this, PackageManager.MATCH_DEFAULT_ONLY);
3416            if (info != null) {
3417                ai = info.activityInfo;
3418            }
3419        }
3420
3421        return ai;
3422    }
3423
3424    /**
3425     * Set the general action to be performed.
3426     *
3427     * @param action An action name, such as ACTION_VIEW.  Application-specific
3428     *               actions should be prefixed with the vendor's package name.
3429     *
3430     * @return Returns the same Intent object, for chaining multiple calls
3431     * into a single statement.
3432     *
3433     * @see #getAction
3434     */
3435    public Intent setAction(String action) {
3436        mAction = action;
3437        return this;
3438    }
3439
3440    /**
3441     * Set the data this intent is operating on.  This method automatically
3442     * clears any type that was previously set by {@link #setType}.
3443     *
3444     * <p><em>Note: scheme and host name matching in the Android framework is
3445     * case-sensitive, unlike the formal RFC.  As a result,
3446     * you should always ensure that you write your Uri with these elements
3447     * using lower case letters, and normalize any Uris you receive from
3448     * outside of Android to ensure the scheme and host is lower case.</em></p>
3449     *
3450     * @param data The URI of the data this intent is now targeting.
3451     *
3452     * @return Returns the same Intent object, for chaining multiple calls
3453     * into a single statement.
3454     *
3455     * @see #getData
3456     * @see #setType
3457     * @see #setDataAndType
3458     */
3459    public Intent setData(Uri data) {
3460        mData = data;
3461        mType = null;
3462        return this;
3463    }
3464
3465    /**
3466     * Set an explicit MIME data type.  This is used to create intents that
3467     * only specify a type and not data, for example to indicate the type of
3468     * data to return.  This method automatically clears any data that was
3469     * previously set by {@link #setData}.
3470     *
3471     * <p><em>Note: MIME type matching in the Android framework is
3472     * case-sensitive, unlike formal RFC MIME types.  As a result,
3473     * you should always write your MIME types with lower case letters,
3474     * and any MIME types you receive from outside of Android should be
3475     * converted to lower case before supplying them here.</em></p>
3476     *
3477     * @param type The MIME type of the data being handled by this intent.
3478     *
3479     * @return Returns the same Intent object, for chaining multiple calls
3480     * into a single statement.
3481     *
3482     * @see #getType
3483     * @see #setData
3484     * @see #setDataAndType
3485     */
3486    public Intent setType(String type) {
3487        mData = null;
3488        mType = type;
3489        return this;
3490    }
3491
3492    /**
3493     * (Usually optional) Set the data for the intent along with an explicit
3494     * MIME data type.  This method should very rarely be used -- it allows you
3495     * to override the MIME type that would ordinarily be inferred from the
3496     * data with your own type given here.
3497     *
3498     * <p><em>Note: MIME type, Uri scheme, and host name matching in the
3499     * Android framework is case-sensitive, unlike the formal RFC definitions.
3500     * As a result, you should always write these elements with lower case letters,
3501     * and normalize any MIME types or Uris you receive from
3502     * outside of Android to ensure these elements are lower case before
3503     * supplying them here.</em></p>
3504     *
3505     * @param data The URI of the data this intent is now targeting.
3506     * @param type The MIME type of the data being handled by this intent.
3507     *
3508     * @return Returns the same Intent object, for chaining multiple calls
3509     * into a single statement.
3510     *
3511     * @see #setData
3512     * @see #setType
3513     */
3514    public Intent setDataAndType(Uri data, String type) {
3515        mData = data;
3516        mType = type;
3517        return this;
3518    }
3519
3520    /**
3521     * Add a new category to the intent.  Categories provide additional detail
3522     * about the action the intent is perform.  When resolving an intent, only
3523     * activities that provide <em>all</em> of the requested categories will be
3524     * used.
3525     *
3526     * @param category The desired category.  This can be either one of the
3527     *               predefined Intent categories, or a custom category in your own
3528     *               namespace.
3529     *
3530     * @return Returns the same Intent object, for chaining multiple calls
3531     * into a single statement.
3532     *
3533     * @see #hasCategory
3534     * @see #removeCategory
3535     */
3536    public Intent addCategory(String category) {
3537        if (mCategories == null) {
3538            mCategories = new HashSet<String>();
3539        }
3540        mCategories.add(category);
3541        return this;
3542    }
3543
3544    /**
3545     * Remove an category from an intent.
3546     *
3547     * @param category The category to remove.
3548     *
3549     * @see #addCategory
3550     */
3551    public void removeCategory(String category) {
3552        if (mCategories != null) {
3553            mCategories.remove(category);
3554            if (mCategories.size() == 0) {
3555                mCategories = null;
3556            }
3557        }
3558    }
3559
3560    /**
3561     * Add extended data to the intent.  The name must include a package
3562     * prefix, for example the app com.android.contacts would use names
3563     * like "com.android.contacts.ShowAll".
3564     *
3565     * @param name The name of the extra data, with package prefix.
3566     * @param value The boolean data value.
3567     *
3568     * @return Returns the same Intent object, for chaining multiple calls
3569     * into a single statement.
3570     *
3571     * @see #putExtras
3572     * @see #removeExtra
3573     * @see #getBooleanExtra(String, boolean)
3574     */
3575    public Intent putExtra(String name, boolean value) {
3576        if (mExtras == null) {
3577            mExtras = new Bundle();
3578        }
3579        mExtras.putBoolean(name, value);
3580        return this;
3581    }
3582
3583    /**
3584     * Add extended data to the intent.  The name must include a package
3585     * prefix, for example the app com.android.contacts would use names
3586     * like "com.android.contacts.ShowAll".
3587     *
3588     * @param name The name of the extra data, with package prefix.
3589     * @param value The byte data value.
3590     *
3591     * @return Returns the same Intent object, for chaining multiple calls
3592     * into a single statement.
3593     *
3594     * @see #putExtras
3595     * @see #removeExtra
3596     * @see #getByteExtra(String, byte)
3597     */
3598    public Intent putExtra(String name, byte value) {
3599        if (mExtras == null) {
3600            mExtras = new Bundle();
3601        }
3602        mExtras.putByte(name, value);
3603        return this;
3604    }
3605
3606    /**
3607     * Add extended data to the intent.  The name must include a package
3608     * prefix, for example the app com.android.contacts would use names
3609     * like "com.android.contacts.ShowAll".
3610     *
3611     * @param name The name of the extra data, with package prefix.
3612     * @param value The char data value.
3613     *
3614     * @return Returns the same Intent object, for chaining multiple calls
3615     * into a single statement.
3616     *
3617     * @see #putExtras
3618     * @see #removeExtra
3619     * @see #getCharExtra(String, char)
3620     */
3621    public Intent putExtra(String name, char value) {
3622        if (mExtras == null) {
3623            mExtras = new Bundle();
3624        }
3625        mExtras.putChar(name, value);
3626        return this;
3627    }
3628
3629    /**
3630     * Add extended data to the intent.  The name must include a package
3631     * prefix, for example the app com.android.contacts would use names
3632     * like "com.android.contacts.ShowAll".
3633     *
3634     * @param name The name of the extra data, with package prefix.
3635     * @param value The short data value.
3636     *
3637     * @return Returns the same Intent object, for chaining multiple calls
3638     * into a single statement.
3639     *
3640     * @see #putExtras
3641     * @see #removeExtra
3642     * @see #getShortExtra(String, short)
3643     */
3644    public Intent putExtra(String name, short value) {
3645        if (mExtras == null) {
3646            mExtras = new Bundle();
3647        }
3648        mExtras.putShort(name, value);
3649        return this;
3650    }
3651
3652    /**
3653     * Add extended data to the intent.  The name must include a package
3654     * prefix, for example the app com.android.contacts would use names
3655     * like "com.android.contacts.ShowAll".
3656     *
3657     * @param name The name of the extra data, with package prefix.
3658     * @param value The integer data value.
3659     *
3660     * @return Returns the same Intent object, for chaining multiple calls
3661     * into a single statement.
3662     *
3663     * @see #putExtras
3664     * @see #removeExtra
3665     * @see #getIntExtra(String, int)
3666     */
3667    public Intent putExtra(String name, int value) {
3668        if (mExtras == null) {
3669            mExtras = new Bundle();
3670        }
3671        mExtras.putInt(name, value);
3672        return this;
3673    }
3674
3675    /**
3676     * Add extended data to the intent.  The name must include a package
3677     * prefix, for example the app com.android.contacts would use names
3678     * like "com.android.contacts.ShowAll".
3679     *
3680     * @param name The name of the extra data, with package prefix.
3681     * @param value The long data value.
3682     *
3683     * @return Returns the same Intent object, for chaining multiple calls
3684     * into a single statement.
3685     *
3686     * @see #putExtras
3687     * @see #removeExtra
3688     * @see #getLongExtra(String, long)
3689     */
3690    public Intent putExtra(String name, long value) {
3691        if (mExtras == null) {
3692            mExtras = new Bundle();
3693        }
3694        mExtras.putLong(name, value);
3695        return this;
3696    }
3697
3698    /**
3699     * Add extended data to the intent.  The name must include a package
3700     * prefix, for example the app com.android.contacts would use names
3701     * like "com.android.contacts.ShowAll".
3702     *
3703     * @param name The name of the extra data, with package prefix.
3704     * @param value The float data value.
3705     *
3706     * @return Returns the same Intent object, for chaining multiple calls
3707     * into a single statement.
3708     *
3709     * @see #putExtras
3710     * @see #removeExtra
3711     * @see #getFloatExtra(String, float)
3712     */
3713    public Intent putExtra(String name, float value) {
3714        if (mExtras == null) {
3715            mExtras = new Bundle();
3716        }
3717        mExtras.putFloat(name, value);
3718        return this;
3719    }
3720
3721    /**
3722     * Add extended data to the intent.  The name must include a package
3723     * prefix, for example the app com.android.contacts would use names
3724     * like "com.android.contacts.ShowAll".
3725     *
3726     * @param name The name of the extra data, with package prefix.
3727     * @param value The double data value.
3728     *
3729     * @return Returns the same Intent object, for chaining multiple calls
3730     * into a single statement.
3731     *
3732     * @see #putExtras
3733     * @see #removeExtra
3734     * @see #getDoubleExtra(String, double)
3735     */
3736    public Intent putExtra(String name, double value) {
3737        if (mExtras == null) {
3738            mExtras = new Bundle();
3739        }
3740        mExtras.putDouble(name, value);
3741        return this;
3742    }
3743
3744    /**
3745     * Add extended data to the intent.  The name must include a package
3746     * prefix, for example the app com.android.contacts would use names
3747     * like "com.android.contacts.ShowAll".
3748     *
3749     * @param name The name of the extra data, with package prefix.
3750     * @param value The String data value.
3751     *
3752     * @return Returns the same Intent object, for chaining multiple calls
3753     * into a single statement.
3754     *
3755     * @see #putExtras
3756     * @see #removeExtra
3757     * @see #getStringExtra(String)
3758     */
3759    public Intent putExtra(String name, String value) {
3760        if (mExtras == null) {
3761            mExtras = new Bundle();
3762        }
3763        mExtras.putString(name, value);
3764        return this;
3765    }
3766
3767    /**
3768     * Add extended data to the intent.  The name must include a package
3769     * prefix, for example the app com.android.contacts would use names
3770     * like "com.android.contacts.ShowAll".
3771     *
3772     * @param name The name of the extra data, with package prefix.
3773     * @param value The CharSequence data value.
3774     *
3775     * @return Returns the same Intent object, for chaining multiple calls
3776     * into a single statement.
3777     *
3778     * @see #putExtras
3779     * @see #removeExtra
3780     * @see #getCharSequenceExtra(String)
3781     */
3782    public Intent putExtra(String name, CharSequence value) {
3783        if (mExtras == null) {
3784            mExtras = new Bundle();
3785        }
3786        mExtras.putCharSequence(name, value);
3787        return this;
3788    }
3789
3790    /**
3791     * Add extended data to the intent.  The name must include a package
3792     * prefix, for example the app com.android.contacts would use names
3793     * like "com.android.contacts.ShowAll".
3794     *
3795     * @param name The name of the extra data, with package prefix.
3796     * @param value The Parcelable data value.
3797     *
3798     * @return Returns the same Intent object, for chaining multiple calls
3799     * into a single statement.
3800     *
3801     * @see #putExtras
3802     * @see #removeExtra
3803     * @see #getParcelableExtra(String)
3804     */
3805    public Intent putExtra(String name, Parcelable value) {
3806        if (mExtras == null) {
3807            mExtras = new Bundle();
3808        }
3809        mExtras.putParcelable(name, value);
3810        return this;
3811    }
3812
3813    /**
3814     * Add extended data to the intent.  The name must include a package
3815     * prefix, for example the app com.android.contacts would use names
3816     * like "com.android.contacts.ShowAll".
3817     *
3818     * @param name The name of the extra data, with package prefix.
3819     * @param value The Parcelable[] data value.
3820     *
3821     * @return Returns the same Intent object, for chaining multiple calls
3822     * into a single statement.
3823     *
3824     * @see #putExtras
3825     * @see #removeExtra
3826     * @see #getParcelableArrayExtra(String)
3827     */
3828    public Intent putExtra(String name, Parcelable[] value) {
3829        if (mExtras == null) {
3830            mExtras = new Bundle();
3831        }
3832        mExtras.putParcelableArray(name, value);
3833        return this;
3834    }
3835
3836    /**
3837     * Add extended data to the intent.  The name must include a package
3838     * prefix, for example the app com.android.contacts would use names
3839     * like "com.android.contacts.ShowAll".
3840     *
3841     * @param name The name of the extra data, with package prefix.
3842     * @param value The ArrayList<Parcelable> data value.
3843     *
3844     * @return Returns the same Intent object, for chaining multiple calls
3845     * into a single statement.
3846     *
3847     * @see #putExtras
3848     * @see #removeExtra
3849     * @see #getParcelableArrayListExtra(String)
3850     */
3851    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3852        if (mExtras == null) {
3853            mExtras = new Bundle();
3854        }
3855        mExtras.putParcelableArrayList(name, value);
3856        return this;
3857    }
3858
3859    /**
3860     * Add extended data to the intent.  The name must include a package
3861     * prefix, for example the app com.android.contacts would use names
3862     * like "com.android.contacts.ShowAll".
3863     *
3864     * @param name The name of the extra data, with package prefix.
3865     * @param value The ArrayList<Integer> data value.
3866     *
3867     * @return Returns the same Intent object, for chaining multiple calls
3868     * into a single statement.
3869     *
3870     * @see #putExtras
3871     * @see #removeExtra
3872     * @see #getIntegerArrayListExtra(String)
3873     */
3874    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3875        if (mExtras == null) {
3876            mExtras = new Bundle();
3877        }
3878        mExtras.putIntegerArrayList(name, value);
3879        return this;
3880    }
3881
3882    /**
3883     * Add extended data to the intent.  The name must include a package
3884     * prefix, for example the app com.android.contacts would use names
3885     * like "com.android.contacts.ShowAll".
3886     *
3887     * @param name The name of the extra data, with package prefix.
3888     * @param value The ArrayList<String> data value.
3889     *
3890     * @return Returns the same Intent object, for chaining multiple calls
3891     * into a single statement.
3892     *
3893     * @see #putExtras
3894     * @see #removeExtra
3895     * @see #getStringArrayListExtra(String)
3896     */
3897    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3898        if (mExtras == null) {
3899            mExtras = new Bundle();
3900        }
3901        mExtras.putStringArrayList(name, value);
3902        return this;
3903    }
3904
3905    /**
3906     * Add extended data to the intent.  The name must include a package
3907     * prefix, for example the app com.android.contacts would use names
3908     * like "com.android.contacts.ShowAll".
3909     *
3910     * @param name The name of the extra data, with package prefix.
3911     * @param value The Serializable data value.
3912     *
3913     * @return Returns the same Intent object, for chaining multiple calls
3914     * into a single statement.
3915     *
3916     * @see #putExtras
3917     * @see #removeExtra
3918     * @see #getSerializableExtra(String)
3919     */
3920    public Intent putExtra(String name, Serializable value) {
3921        if (mExtras == null) {
3922            mExtras = new Bundle();
3923        }
3924        mExtras.putSerializable(name, value);
3925        return this;
3926    }
3927
3928    /**
3929     * Add extended data to the intent.  The name must include a package
3930     * prefix, for example the app com.android.contacts would use names
3931     * like "com.android.contacts.ShowAll".
3932     *
3933     * @param name The name of the extra data, with package prefix.
3934     * @param value The boolean array data value.
3935     *
3936     * @return Returns the same Intent object, for chaining multiple calls
3937     * into a single statement.
3938     *
3939     * @see #putExtras
3940     * @see #removeExtra
3941     * @see #getBooleanArrayExtra(String)
3942     */
3943    public Intent putExtra(String name, boolean[] value) {
3944        if (mExtras == null) {
3945            mExtras = new Bundle();
3946        }
3947        mExtras.putBooleanArray(name, value);
3948        return this;
3949    }
3950
3951    /**
3952     * Add extended data to the intent.  The name must include a package
3953     * prefix, for example the app com.android.contacts would use names
3954     * like "com.android.contacts.ShowAll".
3955     *
3956     * @param name The name of the extra data, with package prefix.
3957     * @param value The byte array data value.
3958     *
3959     * @return Returns the same Intent object, for chaining multiple calls
3960     * into a single statement.
3961     *
3962     * @see #putExtras
3963     * @see #removeExtra
3964     * @see #getByteArrayExtra(String)
3965     */
3966    public Intent putExtra(String name, byte[] value) {
3967        if (mExtras == null) {
3968            mExtras = new Bundle();
3969        }
3970        mExtras.putByteArray(name, value);
3971        return this;
3972    }
3973
3974    /**
3975     * Add extended data to the intent.  The name must include a package
3976     * prefix, for example the app com.android.contacts would use names
3977     * like "com.android.contacts.ShowAll".
3978     *
3979     * @param name The name of the extra data, with package prefix.
3980     * @param value The short array data value.
3981     *
3982     * @return Returns the same Intent object, for chaining multiple calls
3983     * into a single statement.
3984     *
3985     * @see #putExtras
3986     * @see #removeExtra
3987     * @see #getShortArrayExtra(String)
3988     */
3989    public Intent putExtra(String name, short[] value) {
3990        if (mExtras == null) {
3991            mExtras = new Bundle();
3992        }
3993        mExtras.putShortArray(name, value);
3994        return this;
3995    }
3996
3997    /**
3998     * Add extended data to the intent.  The name must include a package
3999     * prefix, for example the app com.android.contacts would use names
4000     * like "com.android.contacts.ShowAll".
4001     *
4002     * @param name The name of the extra data, with package prefix.
4003     * @param value The char array data value.
4004     *
4005     * @return Returns the same Intent object, for chaining multiple calls
4006     * into a single statement.
4007     *
4008     * @see #putExtras
4009     * @see #removeExtra
4010     * @see #getCharArrayExtra(String)
4011     */
4012    public Intent putExtra(String name, char[] value) {
4013        if (mExtras == null) {
4014            mExtras = new Bundle();
4015        }
4016        mExtras.putCharArray(name, value);
4017        return this;
4018    }
4019
4020    /**
4021     * Add extended data to the intent.  The name must include a package
4022     * prefix, for example the app com.android.contacts would use names
4023     * like "com.android.contacts.ShowAll".
4024     *
4025     * @param name The name of the extra data, with package prefix.
4026     * @param value The int array data value.
4027     *
4028     * @return Returns the same Intent object, for chaining multiple calls
4029     * into a single statement.
4030     *
4031     * @see #putExtras
4032     * @see #removeExtra
4033     * @see #getIntArrayExtra(String)
4034     */
4035    public Intent putExtra(String name, int[] value) {
4036        if (mExtras == null) {
4037            mExtras = new Bundle();
4038        }
4039        mExtras.putIntArray(name, value);
4040        return this;
4041    }
4042
4043    /**
4044     * Add extended data to the intent.  The name must include a package
4045     * prefix, for example the app com.android.contacts would use names
4046     * like "com.android.contacts.ShowAll".
4047     *
4048     * @param name The name of the extra data, with package prefix.
4049     * @param value The byte array data value.
4050     *
4051     * @return Returns the same Intent object, for chaining multiple calls
4052     * into a single statement.
4053     *
4054     * @see #putExtras
4055     * @see #removeExtra
4056     * @see #getLongArrayExtra(String)
4057     */
4058    public Intent putExtra(String name, long[] value) {
4059        if (mExtras == null) {
4060            mExtras = new Bundle();
4061        }
4062        mExtras.putLongArray(name, value);
4063        return this;
4064    }
4065
4066    /**
4067     * Add extended data to the intent.  The name must include a package
4068     * prefix, for example the app com.android.contacts would use names
4069     * like "com.android.contacts.ShowAll".
4070     *
4071     * @param name The name of the extra data, with package prefix.
4072     * @param value The float array data value.
4073     *
4074     * @return Returns the same Intent object, for chaining multiple calls
4075     * into a single statement.
4076     *
4077     * @see #putExtras
4078     * @see #removeExtra
4079     * @see #getFloatArrayExtra(String)
4080     */
4081    public Intent putExtra(String name, float[] value) {
4082        if (mExtras == null) {
4083            mExtras = new Bundle();
4084        }
4085        mExtras.putFloatArray(name, value);
4086        return this;
4087    }
4088
4089    /**
4090     * Add extended data to the intent.  The name must include a package
4091     * prefix, for example the app com.android.contacts would use names
4092     * like "com.android.contacts.ShowAll".
4093     *
4094     * @param name The name of the extra data, with package prefix.
4095     * @param value The double array data value.
4096     *
4097     * @return Returns the same Intent object, for chaining multiple calls
4098     * into a single statement.
4099     *
4100     * @see #putExtras
4101     * @see #removeExtra
4102     * @see #getDoubleArrayExtra(String)
4103     */
4104    public Intent putExtra(String name, double[] value) {
4105        if (mExtras == null) {
4106            mExtras = new Bundle();
4107        }
4108        mExtras.putDoubleArray(name, value);
4109        return this;
4110    }
4111
4112    /**
4113     * Add extended data to the intent.  The name must include a package
4114     * prefix, for example the app com.android.contacts would use names
4115     * like "com.android.contacts.ShowAll".
4116     *
4117     * @param name The name of the extra data, with package prefix.
4118     * @param value The String array data value.
4119     *
4120     * @return Returns the same Intent object, for chaining multiple calls
4121     * into a single statement.
4122     *
4123     * @see #putExtras
4124     * @see #removeExtra
4125     * @see #getStringArrayExtra(String)
4126     */
4127    public Intent putExtra(String name, String[] value) {
4128        if (mExtras == null) {
4129            mExtras = new Bundle();
4130        }
4131        mExtras.putStringArray(name, value);
4132        return this;
4133    }
4134
4135    /**
4136     * Add extended data to the intent.  The name must include a package
4137     * prefix, for example the app com.android.contacts would use names
4138     * like "com.android.contacts.ShowAll".
4139     *
4140     * @param name The name of the extra data, with package prefix.
4141     * @param value The Bundle data value.
4142     *
4143     * @return Returns the same Intent object, for chaining multiple calls
4144     * into a single statement.
4145     *
4146     * @see #putExtras
4147     * @see #removeExtra
4148     * @see #getBundleExtra(String)
4149     */
4150    public Intent putExtra(String name, Bundle value) {
4151        if (mExtras == null) {
4152            mExtras = new Bundle();
4153        }
4154        mExtras.putBundle(name, value);
4155        return this;
4156    }
4157
4158    /**
4159     * Add extended data to the intent.  The name must include a package
4160     * prefix, for example the app com.android.contacts would use names
4161     * like "com.android.contacts.ShowAll".
4162     *
4163     * @param name The name of the extra data, with package prefix.
4164     * @param value The IBinder data value.
4165     *
4166     * @return Returns the same Intent object, for chaining multiple calls
4167     * into a single statement.
4168     *
4169     * @see #putExtras
4170     * @see #removeExtra
4171     * @see #getIBinderExtra(String)
4172     *
4173     * @deprecated
4174     * @hide
4175     */
4176    @Deprecated
4177    public Intent putExtra(String name, IBinder value) {
4178        if (mExtras == null) {
4179            mExtras = new Bundle();
4180        }
4181        mExtras.putIBinder(name, value);
4182        return this;
4183    }
4184
4185    /**
4186     * Copy all extras in 'src' in to this intent.
4187     *
4188     * @param src Contains the extras to copy.
4189     *
4190     * @see #putExtra
4191     */
4192    public Intent putExtras(Intent src) {
4193        if (src.mExtras != null) {
4194            if (mExtras == null) {
4195                mExtras = new Bundle(src.mExtras);
4196            } else {
4197                mExtras.putAll(src.mExtras);
4198            }
4199        }
4200        return this;
4201    }
4202
4203    /**
4204     * Add a set of extended data to the intent.  The keys must include a package
4205     * prefix, for example the app com.android.contacts would use names
4206     * like "com.android.contacts.ShowAll".
4207     *
4208     * @param extras The Bundle of extras to add to this intent.
4209     *
4210     * @see #putExtra
4211     * @see #removeExtra
4212     */
4213    public Intent putExtras(Bundle extras) {
4214        if (mExtras == null) {
4215            mExtras = new Bundle();
4216        }
4217        mExtras.putAll(extras);
4218        return this;
4219    }
4220
4221    /**
4222     * Completely replace the extras in the Intent with the extras in the
4223     * given Intent.
4224     *
4225     * @param src The exact extras contained in this Intent are copied
4226     * into the target intent, replacing any that were previously there.
4227     */
4228    public Intent replaceExtras(Intent src) {
4229        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
4230        return this;
4231    }
4232
4233    /**
4234     * Completely replace the extras in the Intent with the given Bundle of
4235     * extras.
4236     *
4237     * @param extras The new set of extras in the Intent, or null to erase
4238     * all extras.
4239     */
4240    public Intent replaceExtras(Bundle extras) {
4241        mExtras = extras != null ? new Bundle(extras) : null;
4242        return this;
4243    }
4244
4245    /**
4246     * Remove extended data from the intent.
4247     *
4248     * @see #putExtra
4249     */
4250    public void removeExtra(String name) {
4251        if (mExtras != null) {
4252            mExtras.remove(name);
4253            if (mExtras.size() == 0) {
4254                mExtras = null;
4255            }
4256        }
4257    }
4258
4259    /**
4260     * Set special flags controlling how this intent is handled.  Most values
4261     * here depend on the type of component being executed by the Intent,
4262     * specifically the FLAG_ACTIVITY_* flags are all for use with
4263     * {@link Context#startActivity Context.startActivity()} and the
4264     * FLAG_RECEIVER_* flags are all for use with
4265     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
4266     *
4267     * <p>See the <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
4268     * Activities and Tasks</a> documentation for important information on how some of these options impact
4269     * the behavior of your application.
4270     *
4271     * @param flags The desired flags.
4272     *
4273     * @return Returns the same Intent object, for chaining multiple calls
4274     * into a single statement.
4275     *
4276     * @see #getFlags
4277     * @see #addFlags
4278     *
4279     * @see #FLAG_GRANT_READ_URI_PERMISSION
4280     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
4281     * @see #FLAG_DEBUG_LOG_RESOLUTION
4282     * @see #FLAG_FROM_BACKGROUND
4283     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
4284     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
4285     * @see #FLAG_ACTIVITY_CLEAR_TOP
4286     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
4287     * @see #FLAG_ACTIVITY_FORWARD_RESULT
4288     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
4289     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
4290     * @see #FLAG_ACTIVITY_NEW_TASK
4291     * @see #FLAG_ACTIVITY_NO_HISTORY
4292     * @see #FLAG_ACTIVITY_NO_USER_ACTION
4293     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
4294     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
4295     * @see #FLAG_ACTIVITY_SINGLE_TOP
4296     * @see #FLAG_RECEIVER_REGISTERED_ONLY
4297     */
4298    public Intent setFlags(int flags) {
4299        mFlags = flags;
4300        return this;
4301    }
4302
4303    /**
4304     * Add additional flags to the intent (or with existing flags
4305     * value).
4306     *
4307     * @param flags The new flags to set.
4308     *
4309     * @return Returns the same Intent object, for chaining multiple calls
4310     * into a single statement.
4311     *
4312     * @see #setFlags
4313     */
4314    public Intent addFlags(int flags) {
4315        mFlags |= flags;
4316        return this;
4317    }
4318
4319    /**
4320     * (Usually optional) Set an explicit application package name that limits
4321     * the components this Intent will resolve to.  If left to the default
4322     * value of null, all components in all applications will considered.
4323     * If non-null, the Intent can only match the components in the given
4324     * application package.
4325     *
4326     * @param packageName The name of the application package to handle the
4327     * intent, or null to allow any application package.
4328     *
4329     * @return Returns the same Intent object, for chaining multiple calls
4330     * into a single statement.
4331     *
4332     * @see #getPackage
4333     * @see #resolveActivity
4334     */
4335    public Intent setPackage(String packageName) {
4336        mPackage = packageName;
4337        return this;
4338    }
4339
4340    /**
4341     * (Usually optional) Explicitly set the component to handle the intent.
4342     * If left with the default value of null, the system will determine the
4343     * appropriate class to use based on the other fields (action, data,
4344     * type, categories) in the Intent.  If this class is defined, the
4345     * specified class will always be used regardless of the other fields.  You
4346     * should only set this value when you know you absolutely want a specific
4347     * class to be used; otherwise it is better to let the system find the
4348     * appropriate class so that you will respect the installed applications
4349     * and user preferences.
4350     *
4351     * @param component The name of the application component to handle the
4352     * intent, or null to let the system find one for you.
4353     *
4354     * @return Returns the same Intent object, for chaining multiple calls
4355     * into a single statement.
4356     *
4357     * @see #setClass
4358     * @see #setClassName(Context, String)
4359     * @see #setClassName(String, String)
4360     * @see #getComponent
4361     * @see #resolveActivity
4362     */
4363    public Intent setComponent(ComponentName component) {
4364        mComponent = component;
4365        return this;
4366    }
4367
4368    /**
4369     * Convenience for calling {@link #setComponent} with an
4370     * explicit class name.
4371     *
4372     * @param packageContext A Context of the application package implementing
4373     * this class.
4374     * @param className The name of a class inside of the application package
4375     * that will be used as the component for this Intent.
4376     *
4377     * @return Returns the same Intent object, for chaining multiple calls
4378     * into a single statement.
4379     *
4380     * @see #setComponent
4381     * @see #setClass
4382     */
4383    public Intent setClassName(Context packageContext, String className) {
4384        mComponent = new ComponentName(packageContext, className);
4385        return this;
4386    }
4387
4388    /**
4389     * Convenience for calling {@link #setComponent} with an
4390     * explicit application package name and class name.
4391     *
4392     * @param packageName The name of the package implementing the desired
4393     * component.
4394     * @param className The name of a class inside of the application package
4395     * that will be used as the component for this Intent.
4396     *
4397     * @return Returns the same Intent object, for chaining multiple calls
4398     * into a single statement.
4399     *
4400     * @see #setComponent
4401     * @see #setClass
4402     */
4403    public Intent setClassName(String packageName, String className) {
4404        mComponent = new ComponentName(packageName, className);
4405        return this;
4406    }
4407
4408    /**
4409     * Convenience for calling {@link #setComponent(ComponentName)} with the
4410     * name returned by a {@link Class} object.
4411     *
4412     * @param packageContext A Context of the application package implementing
4413     * this class.
4414     * @param cls The class name to set, equivalent to
4415     *            <code>setClassName(context, cls.getName())</code>.
4416     *
4417     * @return Returns the same Intent object, for chaining multiple calls
4418     * into a single statement.
4419     *
4420     * @see #setComponent
4421     */
4422    public Intent setClass(Context packageContext, Class<?> cls) {
4423        mComponent = new ComponentName(packageContext, cls);
4424        return this;
4425    }
4426
4427    /**
4428     * Use with {@link #fillIn} to allow the current action value to be
4429     * overwritten, even if it is already set.
4430     */
4431    public static final int FILL_IN_ACTION = 1<<0;
4432
4433    /**
4434     * Use with {@link #fillIn} to allow the current data or type value
4435     * overwritten, even if it is already set.
4436     */
4437    public static final int FILL_IN_DATA = 1<<1;
4438
4439    /**
4440     * Use with {@link #fillIn} to allow the current categories to be
4441     * overwritten, even if they are already set.
4442     */
4443    public static final int FILL_IN_CATEGORIES = 1<<2;
4444
4445    /**
4446     * Use with {@link #fillIn} to allow the current component value to be
4447     * overwritten, even if it is already set.
4448     */
4449    public static final int FILL_IN_COMPONENT = 1<<3;
4450
4451    /**
4452     * Use with {@link #fillIn} to allow the current package value to be
4453     * overwritten, even if it is already set.
4454     */
4455    public static final int FILL_IN_PACKAGE = 1<<4;
4456
4457    /**
4458     * Copy the contents of <var>other</var> in to this object, but only
4459     * where fields are not defined by this object.  For purposes of a field
4460     * being defined, the following pieces of data in the Intent are
4461     * considered to be separate fields:
4462     *
4463     * <ul>
4464     * <li> action, as set by {@link #setAction}.
4465     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4466     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4467     * <li> categories, as set by {@link #addCategory}.
4468     * <li> package, as set by {@link #setPackage}.
4469     * <li> component, as set by {@link #setComponent(ComponentName)} or
4470     * related methods.
4471     * <li> each top-level name in the associated extras.
4472     * </ul>
4473     *
4474     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4475     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4476     * and {@link #FILL_IN_COMPONENT} to override the restriction where the
4477     * corresponding field will not be replaced if it is already set.
4478     *
4479     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4480     * and Intent B with {action="gotit", data-type="some/thing",
4481     * categories="one","two"}.
4482     *
4483     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4484     * containing: {action="gotit", data-type="some/thing",
4485     * categories="bar"}.
4486     *
4487     * @param other Another Intent whose values are to be used to fill in
4488     * the current one.
4489     * @param flags Options to control which fields can be filled in.
4490     *
4491     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4492     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4493     * and {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4494     */
4495    public int fillIn(Intent other, int flags) {
4496        int changes = 0;
4497        if (other.mAction != null
4498                && (mAction == null || (flags&FILL_IN_ACTION) != 0)) {
4499            mAction = other.mAction;
4500            changes |= FILL_IN_ACTION;
4501        }
4502        if ((other.mData != null || other.mType != null)
4503                && ((mData == null && mType == null)
4504                        || (flags&FILL_IN_DATA) != 0)) {
4505            mData = other.mData;
4506            mType = other.mType;
4507            changes |= FILL_IN_DATA;
4508        }
4509        if (other.mCategories != null
4510                && (mCategories == null || (flags&FILL_IN_CATEGORIES) != 0)) {
4511            if (other.mCategories != null) {
4512                mCategories = new HashSet<String>(other.mCategories);
4513            }
4514            changes |= FILL_IN_CATEGORIES;
4515        }
4516        if (other.mPackage != null
4517                && (mPackage == null || (flags&FILL_IN_PACKAGE) != 0)) {
4518            mPackage = other.mPackage;
4519            changes |= FILL_IN_PACKAGE;
4520        }
4521        // Component is special: it can -only- be set if explicitly allowed,
4522        // since otherwise the sender could force the intent somewhere the
4523        // originator didn't intend.
4524        if (other.mComponent != null && (flags&FILL_IN_COMPONENT) != 0) {
4525            mComponent = other.mComponent;
4526            changes |= FILL_IN_COMPONENT;
4527        }
4528        mFlags |= other.mFlags;
4529        if (mExtras == null) {
4530            if (other.mExtras != null) {
4531                mExtras = new Bundle(other.mExtras);
4532            }
4533        } else if (other.mExtras != null) {
4534            try {
4535                Bundle newb = new Bundle(other.mExtras);
4536                newb.putAll(mExtras);
4537                mExtras = newb;
4538            } catch (RuntimeException e) {
4539                // Modifying the extras can cause us to unparcel the contents
4540                // of the bundle, and if we do this in the system process that
4541                // may fail.  We really should handle this (i.e., the Bundle
4542                // impl shouldn't be on top of a plain map), but for now just
4543                // ignore it and keep the original contents. :(
4544                Log.w("Intent", "Failure filling in extras", e);
4545            }
4546        }
4547        return changes;
4548    }
4549
4550    /**
4551     * Wrapper class holding an Intent and implementing comparisons on it for
4552     * the purpose of filtering.  The class implements its
4553     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4554     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4555     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4556     * on the wrapped Intent.
4557     */
4558    public static final class FilterComparison {
4559        private final Intent mIntent;
4560        private final int mHashCode;
4561
4562        public FilterComparison(Intent intent) {
4563            mIntent = intent;
4564            mHashCode = intent.filterHashCode();
4565        }
4566
4567        /**
4568         * Return the Intent that this FilterComparison represents.
4569         * @return Returns the Intent held by the FilterComparison.  Do
4570         * not modify!
4571         */
4572        public Intent getIntent() {
4573            return mIntent;
4574        }
4575
4576        @Override
4577        public boolean equals(Object obj) {
4578            if (obj instanceof FilterComparison) {
4579                Intent other = ((FilterComparison)obj).mIntent;
4580                return mIntent.filterEquals(other);
4581            }
4582            return false;
4583        }
4584
4585        @Override
4586        public int hashCode() {
4587            return mHashCode;
4588        }
4589    }
4590
4591    /**
4592     * Determine if two intents are the same for the purposes of intent
4593     * resolution (filtering). That is, if their action, data, type,
4594     * class, and categories are the same.  This does <em>not</em> compare
4595     * any extra data included in the intents.
4596     *
4597     * @param other The other Intent to compare against.
4598     *
4599     * @return Returns true if action, data, type, class, and categories
4600     *         are the same.
4601     */
4602    public boolean filterEquals(Intent other) {
4603        if (other == null) {
4604            return false;
4605        }
4606        if (mAction != other.mAction) {
4607            if (mAction != null) {
4608                if (!mAction.equals(other.mAction)) {
4609                    return false;
4610                }
4611            } else {
4612                if (!other.mAction.equals(mAction)) {
4613                    return false;
4614                }
4615            }
4616        }
4617        if (mData != other.mData) {
4618            if (mData != null) {
4619                if (!mData.equals(other.mData)) {
4620                    return false;
4621                }
4622            } else {
4623                if (!other.mData.equals(mData)) {
4624                    return false;
4625                }
4626            }
4627        }
4628        if (mType != other.mType) {
4629            if (mType != null) {
4630                if (!mType.equals(other.mType)) {
4631                    return false;
4632                }
4633            } else {
4634                if (!other.mType.equals(mType)) {
4635                    return false;
4636                }
4637            }
4638        }
4639        if (mPackage != other.mPackage) {
4640            if (mPackage != null) {
4641                if (!mPackage.equals(other.mPackage)) {
4642                    return false;
4643                }
4644            } else {
4645                if (!other.mPackage.equals(mPackage)) {
4646                    return false;
4647                }
4648            }
4649        }
4650        if (mComponent != other.mComponent) {
4651            if (mComponent != null) {
4652                if (!mComponent.equals(other.mComponent)) {
4653                    return false;
4654                }
4655            } else {
4656                if (!other.mComponent.equals(mComponent)) {
4657                    return false;
4658                }
4659            }
4660        }
4661        if (mCategories != other.mCategories) {
4662            if (mCategories != null) {
4663                if (!mCategories.equals(other.mCategories)) {
4664                    return false;
4665                }
4666            } else {
4667                if (!other.mCategories.equals(mCategories)) {
4668                    return false;
4669                }
4670            }
4671        }
4672
4673        return true;
4674    }
4675
4676    /**
4677     * Generate hash code that matches semantics of filterEquals().
4678     *
4679     * @return Returns the hash value of the action, data, type, class, and
4680     *         categories.
4681     *
4682     * @see #filterEquals
4683     */
4684    public int filterHashCode() {
4685        int code = 0;
4686        if (mAction != null) {
4687            code += mAction.hashCode();
4688        }
4689        if (mData != null) {
4690            code += mData.hashCode();
4691        }
4692        if (mType != null) {
4693            code += mType.hashCode();
4694        }
4695        if (mPackage != null) {
4696            code += mPackage.hashCode();
4697        }
4698        if (mComponent != null) {
4699            code += mComponent.hashCode();
4700        }
4701        if (mCategories != null) {
4702            code += mCategories.hashCode();
4703        }
4704        return code;
4705    }
4706
4707    @Override
4708    public String toString() {
4709        StringBuilder   b = new StringBuilder(128);
4710
4711        b.append("Intent { ");
4712        toShortString(b, true, true);
4713        b.append(" }");
4714
4715        return b.toString();
4716    }
4717
4718    /** @hide */
4719    public String toShortString(boolean comp, boolean extras) {
4720        StringBuilder   b = new StringBuilder(128);
4721        toShortString(b, comp, extras);
4722        return b.toString();
4723    }
4724
4725    /** @hide */
4726    public void toShortString(StringBuilder b, boolean comp, boolean extras) {
4727        boolean first = true;
4728        if (mAction != null) {
4729            b.append("act=").append(mAction);
4730            first = false;
4731        }
4732        if (mCategories != null) {
4733            if (!first) {
4734                b.append(' ');
4735            }
4736            first = false;
4737            b.append("cat=[");
4738            Iterator<String> i = mCategories.iterator();
4739            boolean didone = false;
4740            while (i.hasNext()) {
4741                if (didone) b.append(",");
4742                didone = true;
4743                b.append(i.next());
4744            }
4745            b.append("]");
4746        }
4747        if (mData != null) {
4748            if (!first) {
4749                b.append(' ');
4750            }
4751            first = false;
4752            b.append("dat=").append(mData);
4753        }
4754        if (mType != null) {
4755            if (!first) {
4756                b.append(' ');
4757            }
4758            first = false;
4759            b.append("typ=").append(mType);
4760        }
4761        if (mFlags != 0) {
4762            if (!first) {
4763                b.append(' ');
4764            }
4765            first = false;
4766            b.append("flg=0x").append(Integer.toHexString(mFlags));
4767        }
4768        if (mPackage != null) {
4769            if (!first) {
4770                b.append(' ');
4771            }
4772            first = false;
4773            b.append("pkg=").append(mPackage);
4774        }
4775        if (comp && mComponent != null) {
4776            if (!first) {
4777                b.append(' ');
4778            }
4779            first = false;
4780            b.append("cmp=").append(mComponent.flattenToShortString());
4781        }
4782        if (extras && mExtras != null) {
4783            if (!first) {
4784                b.append(' ');
4785            }
4786            first = false;
4787            b.append("(has extras)");
4788        }
4789    }
4790
4791    /**
4792     * Call {@link #toUri} with 0 flags.
4793     * @deprecated Use {@link #toUri} instead.
4794     */
4795    @Deprecated
4796    public String toURI() {
4797        return toUri(0);
4798    }
4799
4800    /**
4801     * Convert this Intent into a String holding a URI representation of it.
4802     * The returned URI string has been properly URI encoded, so it can be
4803     * used with {@link Uri#parse Uri.parse(String)}.  The URI contains the
4804     * Intent's data as the base URI, with an additional fragment describing
4805     * the action, categories, type, flags, package, component, and extras.
4806     *
4807     * <p>You can convert the returned string back to an Intent with
4808     * {@link #getIntent}.
4809     *
4810     * @param flags Additional operating flags.  Either 0 or
4811     * {@link #URI_INTENT_SCHEME}.
4812     *
4813     * @return Returns a URI encoding URI string describing the entire contents
4814     * of the Intent.
4815     */
4816    public String toUri(int flags) {
4817        StringBuilder uri = new StringBuilder(128);
4818        String scheme = null;
4819        if (mData != null) {
4820            String data = mData.toString();
4821            if ((flags&URI_INTENT_SCHEME) != 0) {
4822                final int N = data.length();
4823                for (int i=0; i<N; i++) {
4824                    char c = data.charAt(i);
4825                    if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
4826                            || c == '.' || c == '-') {
4827                        continue;
4828                    }
4829                    if (c == ':' && i > 0) {
4830                        // Valid scheme.
4831                        scheme = data.substring(0, i);
4832                        uri.append("intent:");
4833                        data = data.substring(i+1);
4834                        break;
4835                    }
4836
4837                    // No scheme.
4838                    break;
4839                }
4840            }
4841            uri.append(data);
4842
4843        } else if ((flags&URI_INTENT_SCHEME) != 0) {
4844            uri.append("intent:");
4845        }
4846
4847        uri.append("#Intent;");
4848
4849        if (scheme != null) {
4850            uri.append("scheme=").append(scheme).append(';');
4851        }
4852        if (mAction != null) {
4853            uri.append("action=").append(Uri.encode(mAction)).append(';');
4854        }
4855        if (mCategories != null) {
4856            for (String category : mCategories) {
4857                uri.append("category=").append(Uri.encode(category)).append(';');
4858            }
4859        }
4860        if (mType != null) {
4861            uri.append("type=").append(Uri.encode(mType, "/")).append(';');
4862        }
4863        if (mFlags != 0) {
4864            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4865        }
4866        if (mPackage != null) {
4867            uri.append("package=").append(Uri.encode(mPackage)).append(';');
4868        }
4869        if (mComponent != null) {
4870            uri.append("component=").append(Uri.encode(
4871                    mComponent.flattenToShortString(), "/")).append(';');
4872        }
4873        if (mExtras != null) {
4874            for (String key : mExtras.keySet()) {
4875                final Object value = mExtras.get(key);
4876                char entryType =
4877                        value instanceof String    ? 'S' :
4878                        value instanceof Boolean   ? 'B' :
4879                        value instanceof Byte      ? 'b' :
4880                        value instanceof Character ? 'c' :
4881                        value instanceof Double    ? 'd' :
4882                        value instanceof Float     ? 'f' :
4883                        value instanceof Integer   ? 'i' :
4884                        value instanceof Long      ? 'l' :
4885                        value instanceof Short     ? 's' :
4886                        '\0';
4887
4888                if (entryType != '\0') {
4889                    uri.append(entryType);
4890                    uri.append('.');
4891                    uri.append(Uri.encode(key));
4892                    uri.append('=');
4893                    uri.append(Uri.encode(value.toString()));
4894                    uri.append(';');
4895                }
4896            }
4897        }
4898
4899        uri.append("end");
4900
4901        return uri.toString();
4902    }
4903
4904    public int describeContents() {
4905        return (mExtras != null) ? mExtras.describeContents() : 0;
4906    }
4907
4908    public void writeToParcel(Parcel out, int flags) {
4909        out.writeString(mAction);
4910        Uri.writeToParcel(out, mData);
4911        out.writeString(mType);
4912        out.writeInt(mFlags);
4913        out.writeString(mPackage);
4914        ComponentName.writeToParcel(mComponent, out);
4915
4916        if (mCategories != null) {
4917            out.writeInt(mCategories.size());
4918            for (String category : mCategories) {
4919                out.writeString(category);
4920            }
4921        } else {
4922            out.writeInt(0);
4923        }
4924
4925        out.writeBundle(mExtras);
4926    }
4927
4928    public static final Parcelable.Creator<Intent> CREATOR
4929            = new Parcelable.Creator<Intent>() {
4930        public Intent createFromParcel(Parcel in) {
4931            return new Intent(in);
4932        }
4933        public Intent[] newArray(int size) {
4934            return new Intent[size];
4935        }
4936    };
4937
4938    private Intent(Parcel in) {
4939        readFromParcel(in);
4940    }
4941
4942    public void readFromParcel(Parcel in) {
4943        mAction = in.readString();
4944        mData = Uri.CREATOR.createFromParcel(in);
4945        mType = in.readString();
4946        mFlags = in.readInt();
4947        mPackage = in.readString();
4948        mComponent = ComponentName.readFromParcel(in);
4949
4950        int N = in.readInt();
4951        if (N > 0) {
4952            mCategories = new HashSet<String>();
4953            int i;
4954            for (i=0; i<N; i++) {
4955                mCategories.add(in.readString());
4956            }
4957        } else {
4958            mCategories = null;
4959        }
4960
4961        mExtras = in.readBundle();
4962    }
4963
4964    /**
4965     * Parses the "intent" element (and its children) from XML and instantiates
4966     * an Intent object.  The given XML parser should be located at the tag
4967     * where parsing should start (often named "intent"), from which the
4968     * basic action, data, type, and package and class name will be
4969     * retrieved.  The function will then parse in to any child elements,
4970     * looking for <category android:name="xxx"> tags to add categories and
4971     * <extra android:name="xxx" android:value="yyy"> to attach extra data
4972     * to the intent.
4973     *
4974     * @param resources The Resources to use when inflating resources.
4975     * @param parser The XML parser pointing at an "intent" tag.
4976     * @param attrs The AttributeSet interface for retrieving extended
4977     * attribute data at the current <var>parser</var> location.
4978     * @return An Intent object matching the XML data.
4979     * @throws XmlPullParserException If there was an XML parsing error.
4980     * @throws IOException If there was an I/O error.
4981     */
4982    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
4983            throws XmlPullParserException, IOException {
4984        Intent intent = new Intent();
4985
4986        TypedArray sa = resources.obtainAttributes(attrs,
4987                com.android.internal.R.styleable.Intent);
4988
4989        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
4990
4991        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
4992        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
4993        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
4994
4995        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
4996        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
4997        if (packageName != null && className != null) {
4998            intent.setComponent(new ComponentName(packageName, className));
4999        }
5000
5001        sa.recycle();
5002
5003        int outerDepth = parser.getDepth();
5004        int type;
5005        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
5006               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
5007            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
5008                continue;
5009            }
5010
5011            String nodeName = parser.getName();
5012            if (nodeName.equals("category")) {
5013                sa = resources.obtainAttributes(attrs,
5014                        com.android.internal.R.styleable.IntentCategory);
5015                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
5016                sa.recycle();
5017
5018                if (cat != null) {
5019                    intent.addCategory(cat);
5020                }
5021                XmlUtils.skipCurrentTag(parser);
5022
5023            } else if (nodeName.equals("extra")) {
5024                if (intent.mExtras == null) {
5025                    intent.mExtras = new Bundle();
5026                }
5027                resources.parseBundleExtra("extra", attrs, intent.mExtras);
5028                XmlUtils.skipCurrentTag(parser);
5029
5030            } else {
5031                XmlUtils.skipCurrentTag(parser);
5032            }
5033        }
5034
5035        return intent;
5036    }
5037}
5038