Intent.java revision e1dc1d6dc8064740b78562c3028ccc526a44597e
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:value="android.intent.action.MAIN" /&gt;
244 *                 &lt;category android:value="android.intent.category.LAUNCHER" /&gt;
245 *             &lt;/intent-filter&gt;
246 *             &lt;intent-filter&gt;
247 *                 &lt;action android:value="android.intent.action.VIEW" /&gt;
248 *                 &lt;action android:value="android.intent.action.EDIT" /&gt;
249 *                 &lt;action android:value="android.intent.action.PICK" /&gt;
250 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
251 *                 &lt;type android:value="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
252 *             &lt;/intent-filter&gt;
253 *             &lt;intent-filter&gt;
254 *                 &lt;action android:value="android.intent.action.GET_CONTENT" /&gt;
255 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
256 *                 &lt;type android:value="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:value="android.intent.action.VIEW" /&gt;
263 *                 &lt;action android:value="android.intent.action.EDIT" /&gt;
264 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
265 *                 &lt;type android:value="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:value="android.intent.action.INSERT" /&gt;
270 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
271 *                 &lt;type android:value="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:value="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
280 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
281 *                 &lt;category android:value="android.intent.category.ALTERNATIVE" /&gt;
282 *                 &lt;category android:value="android.intent.category.SELECTED_ALTERNATIVE" /&gt;
283 *                 &lt;type android:value="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:value="{@link #ACTION_MAIN android.intent.action.MAIN}" /&gt;
298 *     &lt;category android:value="{@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:value="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
307 *     &lt;action android:value="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
308 *     &lt;action android:value="{@link #ACTION_PICK android.intent.action.PICK}" /&gt;
309 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
310 *     &lt;type android:value="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:value="{@link #ACTION_GET_CONTENT android.intent.action.GET_CONTENT}" /&gt;
326 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
327 *     &lt;type android:value="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:value="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
375 *     &lt;action android:value="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
376 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
377 *     &lt;type android:value="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:value="{@link #ACTION_INSERT android.intent.action.INSERT}" /&gt;
388 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
389 *     &lt;type android:value="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:value="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
426 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
427 *     &lt;category android:value="{@link #CATEGORY_ALTERNATIVE android.intent.category.ALTERNATIVE}" /&gt;
428 *     &lt;category android:value="{@link #CATEGORY_SELECTED_ALTERNATIVE android.intent.category.SELECTED_ALTERNATIVE}" /&gt;
429 *     &lt;type android:value="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_UID_REMOVED}
508 *     <li> {@link #ACTION_BATTERY_CHANGED}
509 *     <li> {@link #ACTION_POWER_CONNECTED}
510 *     <li> {@link #ACTION_POWER_DISCONNECTED}
511 * </ul>
512 *
513 * <h3>Standard Categories</h3>
514 *
515 * <p>These are the current standard categories that can be used to further
516 * clarify an Intent via {@link #addCategory}.
517 *
518 * <ul>
519 *     <li> {@link #CATEGORY_DEFAULT}
520 *     <li> {@link #CATEGORY_BROWSABLE}
521 *     <li> {@link #CATEGORY_TAB}
522 *     <li> {@link #CATEGORY_ALTERNATIVE}
523 *     <li> {@link #CATEGORY_SELECTED_ALTERNATIVE}
524 *     <li> {@link #CATEGORY_LAUNCHER}
525 *     <li> {@link #CATEGORY_HOME}
526 *     <li> {@link #CATEGORY_PREFERENCE}
527 *     <li> {@link #CATEGORY_GADGET}
528 *     <li> {@link #CATEGORY_TEST}
529 * </ul>
530 *
531 * <h3>Standard Extra Data</h3>
532 *
533 * <p>These are the current standard fields that can be used as extra data via
534 * {@link #putExtra}.
535 *
536 * <ul>
537 *     <li> {@link #EXTRA_TEMPLATE}
538 *     <li> {@link #EXTRA_INTENT}
539 *     <li> {@link #EXTRA_STREAM}
540 *     <li> {@link #EXTRA_TEXT}
541 * </ul>
542 *
543 * <h3>Flags</h3>
544 *
545 * <p>These are the possible flags that can be used in the Intent via
546 * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
547 * of all possible flags.
548 */
549public class Intent implements Parcelable {
550    // ---------------------------------------------------------------------
551    // ---------------------------------------------------------------------
552    // Standard intent activity actions (see action variable).
553
554    /**
555     *  Activity Action: Start as a main entry point, does not expect to
556     *  receive data.
557     *  <p>Input: nothing
558     *  <p>Output: nothing
559     */
560    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
561    public static final String ACTION_MAIN = "android.intent.action.MAIN";
562
563    /**
564     * Activity Action: Display the data to the user.  This is the most common
565     * action performed on data -- it is the generic action you can use on
566     * a piece of data to get the most reasonable thing to occur.  For example,
567     * when used on a contacts entry it will view the entry; when used on a
568     * mailto: URI it will bring up a compose window filled with the information
569     * supplied by the URI; when used with a tel: URI it will invoke the
570     * dialer.
571     * <p>Input: {@link #getData} is URI from which to retrieve data.
572     * <p>Output: nothing.
573     */
574    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
575    public static final String ACTION_VIEW = "android.intent.action.VIEW";
576
577    /**
578     * A synonym for {@link #ACTION_VIEW}, the "standard" action that is
579     * performed on a piece of data.
580     */
581    public static final String ACTION_DEFAULT = ACTION_VIEW;
582
583    /**
584     * Used to indicate that some piece of data should be attached to some other
585     * place.  For example, image data could be attached to a contact.  It is up
586     * to the recipient to decide where the data should be attached; the intent
587     * does not specify the ultimate destination.
588     * <p>Input: {@link #getData} is URI of data to be attached.
589     * <p>Output: nothing.
590     */
591    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
592    public static final String ACTION_ATTACH_DATA = "android.intent.action.ATTACH_DATA";
593
594    /**
595     * Activity Action: Provide explicit editable access to the given data.
596     * <p>Input: {@link #getData} is URI of data to be edited.
597     * <p>Output: nothing.
598     */
599    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
600    public static final String ACTION_EDIT = "android.intent.action.EDIT";
601
602    /**
603     * Activity Action: Pick an existing item, or insert a new item, and then edit it.
604     * <p>Input: {@link #getType} is the desired MIME type of the item to create or edit.
605     * The extras can contain type specific data to pass through to the editing/creating
606     * activity.
607     * <p>Output: The URI of the item that was picked.  This must be a content:
608     * URI so that any receiver can access it.
609     */
610    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
611    public static final String ACTION_INSERT_OR_EDIT = "android.intent.action.INSERT_OR_EDIT";
612
613    /**
614     * Activity Action: Pick an item from the data, returning what was selected.
615     * <p>Input: {@link #getData} is URI containing a directory of data
616     * (vnd.android.cursor.dir/*) from which to pick an item.
617     * <p>Output: The URI of the item that was picked.
618     */
619    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
620    public static final String ACTION_PICK = "android.intent.action.PICK";
621
622    /**
623     * Activity Action: Creates a shortcut.
624     * <p>Input: Nothing.</p>
625     * <p>Output: An Intent representing the shortcut. The intent must contain three
626     * extras: SHORTCUT_INTENT (value: Intent), SHORTCUT_NAME (value: String),
627     * and SHORTCUT_ICON (value: Bitmap) or SHORTCUT_ICON_RESOURCE
628     * (value: ShortcutIconResource).</p>
629     *
630     * @see #EXTRA_SHORTCUT_INTENT
631     * @see #EXTRA_SHORTCUT_NAME
632     * @see #EXTRA_SHORTCUT_ICON
633     * @see #EXTRA_SHORTCUT_ICON_RESOURCE
634     * @see android.content.Intent.ShortcutIconResource
635     */
636    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
637    public static final String ACTION_CREATE_SHORTCUT = "android.intent.action.CREATE_SHORTCUT";
638
639    /**
640     * The name of the extra used to define the Intent of a shortcut.
641     *
642     * @see #ACTION_CREATE_SHORTCUT
643     */
644    public static final String EXTRA_SHORTCUT_INTENT = "android.intent.extra.shortcut.INTENT";
645    /**
646     * The name of the extra used to define the name of a shortcut.
647     *
648     * @see #ACTION_CREATE_SHORTCUT
649     */
650    public static final String EXTRA_SHORTCUT_NAME = "android.intent.extra.shortcut.NAME";
651    /**
652     * The name of the extra used to define the icon, as a Bitmap, of a shortcut.
653     *
654     * @see #ACTION_CREATE_SHORTCUT
655     */
656    public static final String EXTRA_SHORTCUT_ICON = "android.intent.extra.shortcut.ICON";
657    /**
658     * The name of the extra used to define the icon, as a ShortcutIconResource, of a shortcut.
659     *
660     * @see #ACTION_CREATE_SHORTCUT
661     * @see android.content.Intent.ShortcutIconResource
662     */
663    public static final String EXTRA_SHORTCUT_ICON_RESOURCE =
664            "android.intent.extra.shortcut.ICON_RESOURCE";
665
666    /**
667     * Represents a shortcut/live folder icon resource.
668     *
669     * @see Intent#ACTION_CREATE_SHORTCUT
670     * @see Intent#EXTRA_SHORTCUT_ICON_RESOURCE
671     * @see android.provider.LiveFolders#ACTION_CREATE_LIVE_FOLDER
672     * @see android.provider.LiveFolders#EXTRA_LIVE_FOLDER_ICON
673     */
674    public static class ShortcutIconResource implements Parcelable {
675        /**
676         * The package name of the application containing the icon.
677         */
678        public String packageName;
679
680        /**
681         * The resource name of the icon, including package, name and type.
682         */
683        public String resourceName;
684
685        /**
686         * Creates a new ShortcutIconResource for the specified context and resource
687         * identifier.
688         *
689         * @param context The context of the application.
690         * @param resourceId The resource idenfitier for the icon.
691         * @return A new ShortcutIconResource with the specified's context package name
692         *         and icon resource idenfitier.
693         */
694        public static ShortcutIconResource fromContext(Context context, int resourceId) {
695            ShortcutIconResource icon = new ShortcutIconResource();
696            icon.packageName = context.getPackageName();
697            icon.resourceName = context.getResources().getResourceName(resourceId);
698            return icon;
699        }
700
701        /**
702         * Used to read a ShortcutIconResource from a Parcel.
703         */
704        public static final Parcelable.Creator<ShortcutIconResource> CREATOR =
705            new Parcelable.Creator<ShortcutIconResource>() {
706
707                public ShortcutIconResource createFromParcel(Parcel source) {
708                    ShortcutIconResource icon = new ShortcutIconResource();
709                    icon.packageName = source.readString();
710                    icon.resourceName = source.readString();
711                    return icon;
712                }
713
714                public ShortcutIconResource[] newArray(int size) {
715                    return new ShortcutIconResource[size];
716                }
717            };
718
719        /**
720         * No special parcel contents.
721         */
722        public int describeContents() {
723            return 0;
724        }
725
726        public void writeToParcel(Parcel dest, int flags) {
727            dest.writeString(packageName);
728            dest.writeString(resourceName);
729        }
730
731        @Override
732        public String toString() {
733            return resourceName;
734        }
735    }
736
737    /**
738     * Activity Action: Display an activity chooser, allowing the user to pick
739     * what they want to before proceeding.  This can be used as an alternative
740     * to the standard activity picker that is displayed by the system when
741     * you try to start an activity with multiple possible matches, with these
742     * differences in behavior:
743     * <ul>
744     * <li>You can specify the title that will appear in the activity chooser.
745     * <li>The user does not have the option to make one of the matching
746     * activities a preferred activity, and all possible activities will
747     * always be shown even if one of them is currently marked as the
748     * preferred activity.
749     * </ul>
750     * <p>
751     * This action should be used when the user will naturally expect to
752     * select an activity in order to proceed.  An example if when not to use
753     * it is when the user clicks on a "mailto:" link.  They would naturally
754     * expect to go directly to their mail app, so startActivity() should be
755     * called directly: it will
756     * either launch the current preferred app, or put up a dialog allowing the
757     * user to pick an app to use and optionally marking that as preferred.
758     * <p>
759     * In contrast, if the user is selecting a menu item to send a picture
760     * they are viewing to someone else, there are many different things they
761     * may want to do at this point: send it through e-mail, upload it to a
762     * web service, etc.  In this case the CHOOSER action should be used, to
763     * always present to the user a list of the things they can do, with a
764     * nice title given by the caller such as "Send this photo with:".
765     * <p>
766     * As a convenience, an Intent of this form can be created with the
767     * {@link #createChooser} function.
768     * <p>Input: No data should be specified.  get*Extra must have
769     * a {@link #EXTRA_INTENT} field containing the Intent being executed,
770     * and can optionally have a {@link #EXTRA_TITLE} field containing the
771     * title text to display in the chooser.
772     * <p>Output: Depends on the protocol of {@link #EXTRA_INTENT}.
773     */
774    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
775    public static final String ACTION_CHOOSER = "android.intent.action.CHOOSER";
776
777    /**
778     * Convenience function for creating a {@link #ACTION_CHOOSER} Intent.
779     *
780     * @param target The Intent that the user will be selecting an activity
781     * to perform.
782     * @param title Optional title that will be displayed in the chooser.
783     * @return Return a new Intent object that you can hand to
784     * {@link Context#startActivity(Intent) Context.startActivity()} and
785     * related methods.
786     */
787    public static Intent createChooser(Intent target, CharSequence title) {
788        Intent intent = new Intent(ACTION_CHOOSER);
789        intent.putExtra(EXTRA_INTENT, target);
790        if (title != null) {
791            intent.putExtra(EXTRA_TITLE, title);
792        }
793        return intent;
794    }
795    /**
796     * Activity Action: Allow the user to select a particular kind of data and
797     * return it.  This is different than {@link #ACTION_PICK} in that here we
798     * just say what kind of data is desired, not a URI of existing data from
799     * which the user can pick.  A ACTION_GET_CONTENT could allow the user to
800     * create the data as it runs (for example taking a picture or recording a
801     * sound), let them browser over the web and download the desired data,
802     * etc.
803     * <p>
804     * There are two main ways to use this action: if you want an specific kind
805     * of data, such as a person contact, you set the MIME type to the kind of
806     * data you want and launch it with {@link Context#startActivity(Intent)}.
807     * The system will then launch the best application to select that kind
808     * of data for you.
809     * <p>
810     * You may also be interested in any of a set of types of content the user
811     * can pick.  For example, an e-mail application that wants to allow the
812     * user to add an attachment to an e-mail message can use this action to
813     * bring up a list of all of the types of content the user can attach.
814     * <p>
815     * In this case, you should wrap the GET_CONTENT intent with a chooser
816     * (through {@link #createChooser}), which will give the proper interface
817     * for the user to pick how to send your data and allow you to specify
818     * a prompt indicating what they are doing.  You will usually specify a
819     * broad MIME type (such as image/* or {@literal *}/*), resulting in a
820     * broad range of content types the user can select from.
821     * <p>
822     * When using such a broad GET_CONTENT action, it is often desireable to
823     * only pick from data that can be represented as a stream.  This is
824     * accomplished by requiring the {@link #CATEGORY_OPENABLE} in the Intent.
825     * <p>
826     * Input: {@link #getType} is the desired MIME type to retrieve.  Note
827     * that no URI is supplied in the intent, as there are no constraints on
828     * where the returned data originally comes from.  You may also include the
829     * {@link #CATEGORY_OPENABLE} if you can only accept data that can be
830     * opened as a stream.
831     * <p>
832     * Output: The URI of the item that was picked.  This must be a content:
833     * URI so that any receiver can access it.
834     */
835    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
836    public static final String ACTION_GET_CONTENT = "android.intent.action.GET_CONTENT";
837    /**
838     * Activity Action: Dial a number as specified by the data.  This shows a
839     * UI with the number being dialed, allowing the user to explicitly
840     * initiate the call.
841     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
842     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
843     * number.
844     * <p>Output: nothing.
845     */
846    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
847    public static final String ACTION_DIAL = "android.intent.action.DIAL";
848    /**
849     * Activity Action: Perform a call to someone specified by the data.
850     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
851     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
852     * number.
853     * <p>Output: nothing.
854     *
855     * <p>Note: there will be restrictions on which applications can initiate a
856     * call; most applications should use the {@link #ACTION_DIAL}.
857     * <p>Note: this Intent <strong>cannot</strong> be used to call emergency
858     * numbers.  Applications can <strong>dial</strong> emergency numbers using
859     * {@link #ACTION_DIAL}, however.
860     */
861    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
862    public static final String ACTION_CALL = "android.intent.action.CALL";
863    /**
864     * Activity Action: Perform a call to an emergency number specified by the
865     * data.
866     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
867     * tel: URI of an explicit phone number.
868     * <p>Output: nothing.
869     * @hide
870     */
871    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY";
872    /**
873     * Activity action: Perform a call to any number (emergency or not)
874     * specified by the data.
875     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
876     * tel: URI of an explicit phone number.
877     * <p>Output: nothing.
878     * @hide
879     */
880    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";
881    /**
882     * Activity Action: Send a message to someone specified by the data.
883     * <p>Input: {@link #getData} is URI describing the target.
884     * <p>Output: nothing.
885     */
886    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
887    public static final String ACTION_SENDTO = "android.intent.action.SENDTO";
888    /**
889     * Activity Action: Deliver some data to someone else.  Who the data is
890     * being delivered to is not specified; it is up to the receiver of this
891     * action to ask the user where the data should be sent.
892     * <p>
893     * When launching a SEND intent, you should usually wrap it in a chooser
894     * (through {@link #createChooser}), which will give the proper interface
895     * for the user to pick how to send your data and allow you to specify
896     * a prompt indicating what they are doing.
897     * <p>
898     * Input: {@link #getType} is the MIME type of the data being sent.
899     * get*Extra can have either a {@link #EXTRA_TEXT}
900     * or {@link #EXTRA_STREAM} field, containing the data to be sent.  If
901     * using EXTRA_TEXT, the MIME type should be "text/plain"; otherwise it
902     * should be the MIME type of the data in EXTRA_STREAM.  Use {@literal *}/*
903     * if the MIME type is unknown (this will only allow senders that can
904     * handle generic data streams).
905     * <p>
906     * Optional standard extras, which may be interpreted by some recipients as
907     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
908     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
909     * <p>
910     * Output: nothing.
911     */
912    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
913    public static final String ACTION_SEND = "android.intent.action.SEND";
914    /**
915     * Activity Action: Handle an incoming phone call.
916     * <p>Input: nothing.
917     * <p>Output: nothing.
918     */
919    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
920    public static final String ACTION_ANSWER = "android.intent.action.ANSWER";
921    /**
922     * Activity Action: Insert an empty item into the given container.
923     * <p>Input: {@link #getData} is URI of the directory (vnd.android.cursor.dir/*)
924     * in which to place the data.
925     * <p>Output: URI of the new data that was created.
926     */
927    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
928    public static final String ACTION_INSERT = "android.intent.action.INSERT";
929    /**
930     * Activity Action: Delete the given data from its container.
931     * <p>Input: {@link #getData} is URI of data to be deleted.
932     * <p>Output: nothing.
933     */
934    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
935    public static final String ACTION_DELETE = "android.intent.action.DELETE";
936    /**
937     * Activity Action: Run the data, whatever that means.
938     * <p>Input: ?  (Note: this is currently specific to the test harness.)
939     * <p>Output: nothing.
940     */
941    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
942    public static final String ACTION_RUN = "android.intent.action.RUN";
943    /**
944     * Activity Action: Perform a data synchronization.
945     * <p>Input: ?
946     * <p>Output: ?
947     */
948    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
949    public static final String ACTION_SYNC = "android.intent.action.SYNC";
950    /**
951     * Activity Action: Pick an activity given an intent, returning the class
952     * selected.
953     * <p>Input: get*Extra field {@link #EXTRA_INTENT} is an Intent
954     * used with {@link PackageManager#queryIntentActivities} to determine the
955     * set of activities from which to pick.
956     * <p>Output: Class name of the activity that was selected.
957     */
958    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
959    public static final String ACTION_PICK_ACTIVITY = "android.intent.action.PICK_ACTIVITY";
960    /**
961     * Activity Action: Perform a search.
962     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
963     * is the text to search for.  If empty, simply
964     * enter your search results Activity with the search UI activated.
965     * <p>Output: nothing.
966     */
967    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
968    public static final String ACTION_SEARCH = "android.intent.action.SEARCH";
969    /**
970     * Activity Action: Perform a web search.
971     * <p>
972     * Input: {@link android.app.SearchManager#QUERY
973     * getStringExtra(SearchManager.QUERY)} is the text to search for. If it is
974     * a url starts with http or https, the site will be opened. If it is plain
975     * text, Google search will be applied.
976     * <p>
977     * Output: nothing.
978     */
979    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
980    public static final String ACTION_WEB_SEARCH = "android.intent.action.WEB_SEARCH";
981    /**
982     * Activity Action: List all available applications
983     * <p>Input: Nothing.
984     * <p>Output: nothing.
985     */
986    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
987    public static final String ACTION_ALL_APPS = "android.intent.action.ALL_APPS";
988    /**
989     * Activity Action: Show settings for choosing wallpaper
990     * <p>Input: Nothing.
991     * <p>Output: Nothing.
992     */
993    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
994    public static final String ACTION_SET_WALLPAPER = "android.intent.action.SET_WALLPAPER";
995
996    /**
997     * Activity Action: Show activity for reporting a bug.
998     * <p>Input: Nothing.
999     * <p>Output: Nothing.
1000     */
1001    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1002    public static final String ACTION_BUG_REPORT = "android.intent.action.BUG_REPORT";
1003
1004    /**
1005     *  Activity Action: Main entry point for factory tests.  Only used when
1006     *  the device is booting in factory test node.  The implementing package
1007     *  must be installed in the system image.
1008     *  <p>Input: nothing
1009     *  <p>Output: nothing
1010     */
1011    public static final String ACTION_FACTORY_TEST = "android.intent.action.FACTORY_TEST";
1012
1013    /**
1014     * Activity Action: The user pressed the "call" button to go to the dialer
1015     * or other appropriate UI for placing a call.
1016     * <p>Input: Nothing.
1017     * <p>Output: Nothing.
1018     */
1019    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1020    public static final String ACTION_CALL_BUTTON = "android.intent.action.CALL_BUTTON";
1021
1022    /**
1023     * Activity Action: Start Voice Command.
1024     * <p>Input: Nothing.
1025     * <p>Output: Nothing.
1026     */
1027    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1028    public static final String ACTION_VOICE_COMMAND = "android.intent.action.VOICE_COMMAND";
1029
1030    // ---------------------------------------------------------------------
1031    // ---------------------------------------------------------------------
1032    // Standard intent broadcast actions (see action variable).
1033
1034    /**
1035     * Broadcast Action: Sent after the screen turns off.
1036     */
1037    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1038    public static final String ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF";
1039    /**
1040     * Broadcast Action: Sent after the screen turns on.
1041     */
1042    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1043    public static final String ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON";
1044    /**
1045     * Broadcast Action: The current time has changed.  Sent every
1046     * minute.  You can <em>not</em> receive this through components declared
1047     * in manifests, only by exlicitly registering for it with
1048     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1049     * Context.registerReceiver()}.
1050     */
1051    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1052    public static final String ACTION_TIME_TICK = "android.intent.action.TIME_TICK";
1053    /**
1054     * Broadcast Action: The time was set.
1055     */
1056    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1057    public static final String ACTION_TIME_CHANGED = "android.intent.action.TIME_SET";
1058    /**
1059     * Broadcast Action: The date has changed.
1060     */
1061    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1062    public static final String ACTION_DATE_CHANGED = "android.intent.action.DATE_CHANGED";
1063    /**
1064     * Broadcast Action: The timezone has changed. The intent will have the following extra values:</p>
1065     * <ul>
1066     *   <li><em>time-zone</em> - The java.util.TimeZone.getID() value identifying the new time zone.</li>
1067     * </ul>
1068     */
1069    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1070    public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
1071    /**
1072     * Alarm Changed Action: This is broadcast when the AlarmClock
1073     * application's alarm is set or unset.  It is used by the
1074     * AlarmClock application and the StatusBar service.
1075     * @hide
1076     */
1077    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1078    public static final String ACTION_ALARM_CHANGED = "android.intent.action.ALARM_CHANGED";
1079    /**
1080     * Sync State Changed Action: This is broadcast when the sync starts or stops or when one has
1081     * been failing for a long time.  It is used by the SyncManager and the StatusBar service.
1082     * @hide
1083     */
1084    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1085    public static final String ACTION_SYNC_STATE_CHANGED
1086            = "android.intent.action.SYNC_STATE_CHANGED";
1087    /**
1088     * Broadcast Action: This is broadcast once, after the system has finished
1089     * booting.  It can be used to perform application-specific initialization,
1090     * such as installing alarms.  You must hold the
1091     * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED} permission
1092     * in order to receive this broadcast.
1093     */
1094    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1095    public static final String ACTION_BOOT_COMPLETED = "android.intent.action.BOOT_COMPLETED";
1096    /**
1097     * Broadcast Action: This is broadcast when a user action should request a
1098     * temporary system dialog to dismiss.  Some examples of temporary system
1099     * dialogs are the notification window-shade and the recent tasks dialog.
1100     */
1101    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1102    /**
1103     * Broadcast Action: Trigger the download and eventual installation
1104     * of a package.
1105     * <p>Input: {@link #getData} is the URI of the package file to download.
1106     */
1107    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1108    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1109    /**
1110     * Broadcast Action: A new application package has been installed on the
1111     * device. The data contains the name of the package.
1112     */
1113    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1114    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1115    /**
1116     * Broadcast Action: An existing application package has been removed from
1117     * the device.  The data contains the name of the package.  The package
1118     * that is being installed does <em>not</em> receive this Intent.
1119     */
1120    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1121    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1122    /**
1123     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1124     * enabled or disabled.  The data contains the name of the package.
1125     */
1126    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1127    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1128    /**
1129     * Broadcast Action: The user has restarted a package, all runtime state
1130     * associated with it (processes, alarms, notifications, etc) should
1131     * be remove.  The data contains the name of the package.
1132     */
1133    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1134    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1135    /**
1136     * Broadcast Action: A user ID has been removed from the system.  The user
1137     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1138     */
1139    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1140    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1141    /**
1142     * Broadcast Action:  The current system wallpaper has changed.  See
1143     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1144     */
1145    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1146    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1147    /**
1148     * Broadcast Action: The current device {@link android.content.res.Configuration}
1149     * (orientation, locale, etc) has changed.  When such a change happens, the
1150     * UIs (view hierarchy) will need to be rebuilt based on this new
1151     * information; for the most part, applications don't need to worry about
1152     * this, because the system will take care of stopping and restarting the
1153     * application to make sure it sees the new changes.  Some system code that
1154     * can not be restarted will need to watch for this action and handle it
1155     * appropriately.
1156     *
1157     * @see android.content.res.Configuration
1158     */
1159    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1160    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1161    /**
1162     * Broadcast Action:  The charging state, or charge level of the battery has
1163     * changed.
1164     *
1165     * <p class="note">
1166     * You can <em>not</em> receive this through components declared
1167     * in manifests, only by exlicitly registering for it with
1168     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1169     * Context.registerReceiver()}.
1170     */
1171    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1172    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1173    /**
1174     * Broadcast Action:  Indicates low battery condition on the device.
1175     * This broadcast corresponds to the "Low battery warning" system dialog.
1176     */
1177    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1178    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1179    /**
1180     * Broadcast Action:  External power has been connected to the device.
1181     * This is intended for applications that wish to register specifically to this notification.
1182     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1183     * stay active to receive this notification.  This action can be used to implement actions
1184     * that wait until power is available to trigger.
1185     */
1186    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1187    public static final String ACTION_POWER_CONNECTED = "android.intent.action.POWER_CONNECTED";
1188    /**
1189     * Broadcast Action:  External power has been removed from the device.
1190     * This is intended for applications that wish to register specifically to this notification.
1191     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1192     * stay active to receive this notification.  This action can be used to implement actions
1193     * that wait until power is available to trigger.
1194     */
1195    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1196    public static final String ACTION_POWER_DISCONNECTED =
1197            "android.intent.action.POWER_DISCONNECTED";
1198    /**
1199     * Broadcast Action:  Indicates low memory condition on the device
1200     */
1201    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1202    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1203    /**
1204     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1205     */
1206    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1207    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1208    /**
1209     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1210     * and package management should be started.
1211     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1212     * notification.
1213     */
1214    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1215    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1216    /**
1217     * Broadcast Action:  The device has entered USB Mass Storage mode.
1218     * This is used mainly for the USB Settings panel.
1219     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1220     * when the SD card file system is mounted or unmounted
1221     */
1222    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1223    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1224
1225    /**
1226     * Broadcast Action:  The device has exited USB Mass Storage mode.
1227     * This is used mainly for the USB Settings panel.
1228     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1229     * when the SD card file system is mounted or unmounted
1230     */
1231    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1232    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1233
1234    /**
1235     * Broadcast Action:  External media has been removed.
1236     * The path to the mount point for the removed media is contained in the Intent.mData field.
1237     */
1238    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1239    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1240
1241    /**
1242     * Broadcast Action:  External media is present, but not mounted at its mount point.
1243     * The path to the mount point for the removed media is contained in the Intent.mData field.
1244     */
1245    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1246    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1247
1248    /**
1249     * Broadcast Action:  External media is present and mounted at its mount point.
1250     * The path to the mount point for the removed media is contained in the Intent.mData field.
1251     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1252     * media was mounted read only.
1253     */
1254    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1255    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1256
1257    /**
1258     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1259     * The path to the mount point for the removed media is contained in the Intent.mData field.
1260     */
1261    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1262    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1263
1264    /**
1265     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1266     * The path to the mount point for the removed media is contained in the Intent.mData field.
1267     */
1268    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1269    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1270
1271    /**
1272     * Broadcast Action:  External media is present but cannot be mounted.
1273     * The path to the mount point for the removed media is contained in the Intent.mData field.
1274     */
1275    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1276    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1277
1278   /**
1279     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1280     * Applications should close all files they have open within the mount point when they receive this intent.
1281     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1282     */
1283    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1284    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1285
1286    /**
1287     * Broadcast Action:  The media scanner has started scanning a directory.
1288     * The path to the directory being scanned is contained in the Intent.mData field.
1289     */
1290    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1291    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1292
1293   /**
1294     * Broadcast Action:  The media scanner has finished scanning a directory.
1295     * The path to the scanned directory is contained in the Intent.mData field.
1296     */
1297    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1298    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1299
1300   /**
1301     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1302     * The path to the file is contained in the Intent.mData field.
1303     */
1304    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1305    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1306
1307   /**
1308     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1309     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1310     * caused the broadcast.
1311     */
1312    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1313    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1314
1315    /**
1316     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1317     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1318     * caused the broadcast.
1319     */
1320    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1321    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1322
1323    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1324    // location; they are not general-purpose actions.
1325
1326    /**
1327     * Broadcast Action: An GTalk connection has been established.
1328     */
1329    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1330    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1331            "android.intent.action.GTALK_CONNECTED";
1332
1333    /**
1334     * Broadcast Action: An GTalk connection has been disconnected.
1335     */
1336    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1337    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1338            "android.intent.action.GTALK_DISCONNECTED";
1339
1340    /**
1341     * Broadcast Action: An input method has been changed.
1342     * {@hide pending API Council approval}
1343     */
1344    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1345    public static final String ACTION_INPUT_METHOD_CHANGED =
1346            "android.intent.action.INPUT_METHOD_CHANGED";
1347
1348    /**
1349     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1350     * more radios have been turned off or on. The intent will have the following extra value:</p>
1351     * <ul>
1352     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1353     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1354     *   turned off</li>
1355     * </ul>
1356     */
1357    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1358    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1359
1360    /**
1361     * Broadcast Action: Some content providers have parts of their namespace
1362     * where they publish new events or items that the user may be especially
1363     * interested in. For these things, they may broadcast this action when the
1364     * set of interesting items change.
1365     *
1366     * For example, GmailProvider sends this notification when the set of unread
1367     * mail in the inbox changes.
1368     *
1369     * <p>The data of the intent identifies which part of which provider
1370     * changed. When queried through the content resolver, the data URI will
1371     * return the data set in question.
1372     *
1373     * <p>The intent will have the following extra values:
1374     * <ul>
1375     *   <li><em>count</em> - The number of items in the data set. This is the
1376     *       same as the number of items in the cursor returned by querying the
1377     *       data URI. </li>
1378     * </ul>
1379     *
1380     * This intent will be sent at boot (if the count is non-zero) and when the
1381     * data set changes. It is possible for the data set to change without the
1382     * count changing (for example, if a new unread message arrives in the same
1383     * sync operation in which a message is archived). The phone should still
1384     * ring/vibrate/etc as normal in this case.
1385     */
1386    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1387    public static final String ACTION_PROVIDER_CHANGED =
1388            "android.intent.action.PROVIDER_CHANGED";
1389
1390    /**
1391     * Broadcast Action: Wired Headset plugged in or unplugged.
1392     *
1393     * <p>The intent will have the following extra values:
1394     * <ul>
1395     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1396     *   <li><em>name</em> - Headset type, human readable string </li>
1397     * </ul>
1398     * </ul>
1399     */
1400    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1401    public static final String ACTION_HEADSET_PLUG =
1402            "android.intent.action.HEADSET_PLUG";
1403
1404    /**
1405     * Broadcast Action: An outgoing call is about to be placed.
1406     *
1407     * <p>The Intent will have the following extra value:
1408     * <ul>
1409     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1410     *       the phone number originally intended to be dialed.</li>
1411     * </ul>
1412     * <p>Once the broadcast is finished, the resultData is used as the actual
1413     * number to call.  If  <code>null</code>, no call will be placed.</p>
1414     * <p>It is perfectly acceptable for multiple receivers to process the
1415     * outgoing call in turn: for example, a parental control application
1416     * might verify that the user is authorized to place the call at that
1417     * time, then a number-rewriting application might add an area code if
1418     * one was not specified.</p>
1419     * <p>For consistency, any receiver whose purpose is to prohibit phone
1420     * calls should have a priority of 0, to ensure it will see the final
1421     * phone number to be dialed.
1422     * Any receiver whose purpose is to rewrite phone numbers to be called
1423     * should have a positive priority.
1424     * Negative priorities are reserved for the system for this broadcast;
1425     * using them may cause problems.</p>
1426     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1427     * abort the broadcast.</p>
1428     * <p>Emergency calls cannot be intercepted using this mechanism, and
1429     * other calls cannot be modified to call emergency numbers using this
1430     * mechanism.
1431     * <p>You must hold the
1432     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1433     * permission to receive this Intent.</p>
1434     */
1435    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1436    public static final String ACTION_NEW_OUTGOING_CALL =
1437            "android.intent.action.NEW_OUTGOING_CALL";
1438
1439    /**
1440     * Broadcast Action: Have the device reboot.  This is only for use by
1441     * system code.
1442     */
1443    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1444    public static final String ACTION_REBOOT =
1445            "android.intent.action.REBOOT";
1446
1447    // ---------------------------------------------------------------------
1448    // ---------------------------------------------------------------------
1449    // Standard intent categories (see addCategory()).
1450
1451    /**
1452     * Set if the activity should be an option for the default action
1453     * (center press) to perform on a piece of data.  Setting this will
1454     * hide from the user any activities without it set when performing an
1455     * action on some data.  Note that this is normal -not- set in the
1456     * Intent when initiating an action -- it is for use in intent filters
1457     * specified in packages.
1458     */
1459    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1460    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1461    /**
1462     * Activities that can be safely invoked from a browser must support this
1463     * category.  For example, if the user is viewing a web page or an e-mail
1464     * and clicks on a link in the text, the Intent generated execute that
1465     * link will require the BROWSABLE category, so that only activities
1466     * supporting this category will be considered as possible actions.  By
1467     * supporting this category, you are promising that there is nothing
1468     * damaging (without user intervention) that can happen by invoking any
1469     * matching Intent.
1470     */
1471    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1472    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1473    /**
1474     * Set if the activity should be considered as an alternative action to
1475     * the data the user is currently viewing.  See also
1476     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1477     * applies to the selection in a list of items.
1478     *
1479     * <p>Supporting this category means that you would like your activity to be
1480     * displayed in the set of alternative things the user can do, usually as
1481     * part of the current activity's options menu.  You will usually want to
1482     * include a specific label in the &lt;intent-filter&gt; of this action
1483     * describing to the user what it does.
1484     *
1485     * <p>The action of IntentFilter with this category is important in that it
1486     * describes the specific action the target will perform.  This generally
1487     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1488     * a specific name such as "com.android.camera.action.CROP.  Only one
1489     * alternative of any particular action will be shown to the user, so using
1490     * a specific action like this makes sure that your alternative will be
1491     * displayed while also allowing other applications to provide their own
1492     * overrides of that particular action.
1493     */
1494    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1495    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1496    /**
1497     * Set if the activity should be considered as an alternative selection
1498     * action to the data the user has currently selected.  This is like
1499     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1500     * of items from which the user can select, giving them alternatives to the
1501     * default action that will be performed on it.
1502     */
1503    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1504    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1505    /**
1506     * Intended to be used as a tab inside of an containing TabActivity.
1507     */
1508    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1509    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1510    /**
1511     * This activity can be embedded inside of another activity that is hosting
1512     * gadgets.
1513     */
1514    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1515    public static final String CATEGORY_GADGET = "android.intent.category.GADGET";
1516    /**
1517     * Should be displayed in the top-level launcher.
1518     */
1519    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1520    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1521    /**
1522     * This is the home activity, that is the first activity that is displayed
1523     * when the device boots.
1524     */
1525    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1526    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1527    /**
1528     * This activity is a preference panel.
1529     */
1530    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1531    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1532    /**
1533     * This activity is a development preference panel.
1534     */
1535    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1536    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1537    /**
1538     * Capable of running inside a parent activity container.
1539     *
1540     * <p>Note: being removed in favor of more explicit categories such as
1541     * CATEGORY_GADGET
1542     */
1543    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1544    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1545    /**
1546     * This activity may be exercised by the monkey or other automated test tools.
1547     */
1548    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1549    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1550    /**
1551     * To be used as a test (not part of the normal user experience).
1552     */
1553    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1554    /**
1555     * To be used as a unit test (run through the Test Harness).
1556     */
1557    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1558    /**
1559     * To be used as an sample code example (not part of the normal user
1560     * experience).
1561     */
1562    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1563    /**
1564     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1565     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1566     * when queried, though it is allowable for those columns to be blank.
1567     */
1568    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1569    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1570
1571    /**
1572     * To be used as code under test for framework instrumentation tests.
1573     */
1574    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1575            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1576    // ---------------------------------------------------------------------
1577    // ---------------------------------------------------------------------
1578    // Standard extra data keys.
1579
1580    /**
1581     * The initial data to place in a newly created record.  Use with
1582     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1583     * fields as would be given to the underlying ContentProvider.insert()
1584     * call.
1585     */
1586    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1587
1588    /**
1589     * A constant CharSequence that is associated with the Intent, used with
1590     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1591     * this may be a styled CharSequence, so you must use
1592     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1593     * retrieve it.
1594     */
1595    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1596
1597    /**
1598     * A content: URI holding a stream of data associated with the Intent,
1599     * used with {@link #ACTION_SEND} to supply the data being sent.
1600     */
1601    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1602
1603    /**
1604     * A String[] holding e-mail addresses that should be delivered to.
1605     */
1606    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1607
1608    /**
1609     * A String[] holding e-mail addresses that should be carbon copied.
1610     */
1611    public static final String EXTRA_CC       = "android.intent.extra.CC";
1612
1613    /**
1614     * A String[] holding e-mail addresses that should be blind carbon copied.
1615     */
1616    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1617
1618    /**
1619     * A constant string holding the desired subject line of a message.
1620     */
1621    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1622
1623    /**
1624     * An Intent describing the choices you would like shown with
1625     * {@link #ACTION_PICK_ACTIVITY}.
1626     */
1627    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1628
1629    /**
1630     * A CharSequence dialog title to provide to the user when used with a
1631     * {@link #ACTION_CHOOSER}.
1632     */
1633    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1634
1635    /**
1636     * A {@link android.view.KeyEvent} object containing the event that
1637     * triggered the creation of the Intent it is in.
1638     */
1639    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1640
1641    /**
1642     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1643     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1644     * of restarting the application.
1645     */
1646    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1647
1648    /**
1649     * A String holding the phone number originally entered in
1650     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1651     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1652     */
1653    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1654    /**
1655     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1656     * intents to supply the uid the package had been assigned.  Also an optional
1657     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1658     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1659     * purpose.
1660     */
1661    public static final String EXTRA_UID = "android.intent.extra.UID";
1662
1663    /**
1664     * Used as an int extra field in {@link android.app.AlarmManager} intents
1665     * to tell the application being invoked how many pending alarms are being
1666     * delievered with the intent.  For one-shot alarms this will always be 1.
1667     * For recurring alarms, this might be greater than 1 if the device was
1668     * asleep or powered off at the time an earlier alarm would have been
1669     * delivered.
1670     */
1671    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1672
1673    /**
1674     * Used as an int extra field in {@link android.content.Intent#ACTION_VOICE_COMMAND}
1675     * intents to request which audio route the voice command should prefer.
1676     * The value should be a route from {@link android.media.AudioManager}, for
1677     * example ROUTE_BLUETOOTH_SCO. Providing this value is optional.
1678     * {@hide pending API Council approval}
1679     */
1680    public static final String EXTRA_AUDIO_ROUTE = "android.intent.extra.AUDIO_ROUTE";
1681
1682    // ---------------------------------------------------------------------
1683    // ---------------------------------------------------------------------
1684    // Intent flags (see mFlags variable).
1685
1686    /**
1687     * If set, the recipient of this Intent will be granted permission to
1688     * perform read operations on the Uri in the Intent's data.
1689     */
1690    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
1691    /**
1692     * If set, the recipient of this Intent will be granted permission to
1693     * perform write operations on the Uri in the Intent's data.
1694     */
1695    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
1696    /**
1697     * Can be set by the caller to indicate that this Intent is coming from
1698     * a background operation, not from direct user interaction.
1699     */
1700    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
1701    /**
1702     * A flag you can enable for debugging: when set, log messages will be
1703     * printed during the resolution of this intent to show you what has
1704     * been found to create the final resolved list.
1705     */
1706    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
1707
1708    /**
1709     * If set, the new activity is not kept in the history stack.  As soon as
1710     * the user navigates away from it, the activity is finished.  This may also
1711     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
1712     * noHistory} attribute.
1713     */
1714    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
1715    /**
1716     * If set, the activity will not be launched if it is already running
1717     * at the top of the history stack.
1718     */
1719    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
1720    /**
1721     * If set, this activity will become the start of a new task on this
1722     * history stack.  A task (from the activity that started it to the
1723     * next task activity) defines an atomic group of activities that the
1724     * user can move to.  Tasks can be moved to the foreground and background;
1725     * all of the activities inside of a particular task always remain in
1726     * the same order.  See the
1727     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1728     * documentation for more details on tasks.
1729     *
1730     * <p>This flag is generally used by activities that want
1731     * to present a "launcher" style behavior: they give the user a list of
1732     * separate things that can be done, which otherwise run completely
1733     * independently of the activity launching them.
1734     *
1735     * <p>When using this flag, if a task is already running for the activity
1736     * you are now starting, then a new activity will not be started; instead,
1737     * the current task will simply be brought to the front of the screen with
1738     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
1739     * to disable this behavior.
1740     *
1741     * <p>This flag can not be used when the caller is requesting a result from
1742     * the activity being launched.
1743     */
1744    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
1745    /**
1746     * <strong>Do not use this flag unless you are implementing your own
1747     * top-level application launcher.</strong>  Used in conjunction with
1748     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
1749     * behavior of bringing an existing task to the foreground.  When set,
1750     * a new task is <em>always</em> started to host the Activity for the
1751     * Intent, regardless of whether there is already an existing task running
1752     * the same thing.
1753     *
1754     * <p><strong>Because the default system does not include graphical task management,
1755     * you should not use this flag unless you provide some way for a user to
1756     * return back to the tasks you have launched.</strong>
1757     *
1758     * <p>This flag is ignored if
1759     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
1760     *
1761     * <p>See the
1762     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1763     * documentation for more details on tasks.
1764     */
1765    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
1766    /**
1767     * If set, and the activity being launched is already running in the
1768     * current task, then instead of launching a new instance of that activity,
1769     * all of the other activities on top of it will be closed and this Intent
1770     * will be delivered to the (now on top) old activity as a new Intent.
1771     *
1772     * <p>For example, consider a task consisting of the activities: A, B, C, D.
1773     * If D calls startActivity() with an Intent that resolves to the component
1774     * of activity B, then C and D will be finished and B receive the given
1775     * Intent, resulting in the stack now being: A, B.
1776     *
1777     * <p>The currently running instance of task B in the above example will
1778     * either receiving the new intent you are starting here in its
1779     * onNewIntent() method, or be itself finished and restarting with the
1780     * new intent.  If it has declared its launch mode to be "multiple" (the
1781     * default) it will be finished and re-created; for all other launch modes
1782     * it will receive the Intent in the current instance.
1783     *
1784     * <p>This launch mode can also be used to good effect in conjunction with
1785     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
1786     * of a task, it will bring any currently running instance of that task
1787     * to the foreground, and then clear it to its root state.  This is
1788     * especially useful, for example, when launching an activity from the
1789     * notification manager.
1790     *
1791     * <p>See the
1792     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1793     * documentation for more details on tasks.
1794     */
1795    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
1796    /**
1797     * If set and this intent is being used to launch a new activity from an
1798     * existing one, then the reply target of the existing activity will be
1799     * transfered to the new activity.  This way the new activity can call
1800     * {@link android.app.Activity#setResult} and have that result sent back to
1801     * the reply target of the original activity.
1802     */
1803    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
1804    /**
1805     * If set and this intent is being used to launch a new activity from an
1806     * existing one, the current activity will not be counted as the top
1807     * activity for deciding whether the new intent should be delivered to
1808     * the top instead of starting a new one.  The previous activity will
1809     * be used as the top, with the assumption being that the current activity
1810     * will finish itself immediately.
1811     */
1812    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
1813    /**
1814     * If set, the new activity is not kept in the list of recently launched
1815     * activities.
1816     */
1817    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
1818    /**
1819     * This flag is not normally set by application code, but set for you by
1820     * the system as described in the
1821     * {@link android.R.styleable#AndroidManifestActivity_launchMode
1822     * launchMode} documentation for the singleTask mode.
1823     */
1824    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
1825    /**
1826     * If set, and this activity is either being started in a new task or
1827     * bringing to the top an existing task, then it will be launched as
1828     * the front door of the task.  This will result in the application of
1829     * any affinities needed to have that task in the proper state (either
1830     * moving activities to or from it), or simply resetting that task to
1831     * its initial state if needed.
1832     */
1833    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
1834    /**
1835     * This flag is not normally set by application code, but set for you by
1836     * the system if this activity is being launched from history
1837     * (longpress home key).
1838     */
1839    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
1840    /**
1841     * If set, this marks a point in the task's activity stack that should
1842     * be cleared when the task is reset.  That is, the next time the task
1843     * is broad to the foreground with
1844     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
1845     * the user re-launching it from home), this activity and all on top of
1846     * it will be finished so that the user does not return to them, but
1847     * instead returns to whatever activity preceeded it.
1848     *
1849     * <p>This is useful for cases where you have a logical break in your
1850     * application.  For example, an e-mail application may have a command
1851     * to view an attachment, which launches an image view activity to
1852     * display it.  This activity should be part of the e-mail application's
1853     * task, since it is a part of the task the user is involved in.  However,
1854     * if the user leaves that task, and later selects the e-mail app from
1855     * home, we may like them to return to the conversation they were
1856     * viewing, not the picture attachment, since that is confusing.  By
1857     * setting this flag when launching the image viewer, that viewer and
1858     * any activities it starts will be removed the next time the user returns
1859     * to mail.
1860     */
1861    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
1862
1863    /**
1864     * If set, when sending a broadcast only registered receivers will be
1865     * called -- no BroadcastReceiver components will be launched.
1866     */
1867    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
1868
1869    // ---------------------------------------------------------------------
1870
1871    private String mAction;
1872    private Uri mData;
1873    private String mType;
1874    private ComponentName mComponent;
1875    private int mFlags;
1876    private HashSet<String> mCategories;
1877    private Bundle mExtras;
1878
1879    // ---------------------------------------------------------------------
1880
1881    /**
1882     * Create an empty intent.
1883     */
1884    public Intent() {
1885    }
1886
1887    /**
1888     * Copy constructor.
1889     */
1890    public Intent(Intent o) {
1891        this.mAction = o.mAction;
1892        this.mData = o.mData;
1893        this.mType = o.mType;
1894        this.mComponent = o.mComponent;
1895        this.mFlags = o.mFlags;
1896        if (o.mCategories != null) {
1897            this.mCategories = new HashSet<String>(o.mCategories);
1898        }
1899        if (o.mExtras != null) {
1900            this.mExtras = new Bundle(o.mExtras);
1901        }
1902    }
1903
1904    @Override
1905    public Object clone() {
1906        return new Intent(this);
1907    }
1908
1909    private Intent(Intent o, boolean all) {
1910        this.mAction = o.mAction;
1911        this.mData = o.mData;
1912        this.mType = o.mType;
1913        this.mComponent = o.mComponent;
1914        if (o.mCategories != null) {
1915            this.mCategories = new HashSet<String>(o.mCategories);
1916        }
1917    }
1918
1919    /**
1920     * Make a clone of only the parts of the Intent that are relevant for
1921     * filter matching: the action, data, type, component, and categories.
1922     */
1923    public Intent cloneFilter() {
1924        return new Intent(this, false);
1925    }
1926
1927    /**
1928     * Create an intent with a given action.  All other fields (data, type,
1929     * class) are null.  Note that the action <em>must</em> be in a
1930     * namespace because Intents are used globally in the system -- for
1931     * example the system VIEW action is android.intent.action.VIEW; an
1932     * application's custom action would be something like
1933     * com.google.app.myapp.CUSTOM_ACTION.
1934     *
1935     * @param action The Intent action, such as ACTION_VIEW.
1936     */
1937    public Intent(String action) {
1938        mAction = action;
1939    }
1940
1941    /**
1942     * Create an intent with a given action and for a given data url.  Note
1943     * that the action <em>must</em> be in a namespace because Intents are
1944     * used globally in the system -- for example the system VIEW action is
1945     * android.intent.action.VIEW; an application's custom action would be
1946     * something like com.google.app.myapp.CUSTOM_ACTION.
1947     *
1948     * @param action The Intent action, such as ACTION_VIEW.
1949     * @param uri The Intent data URI.
1950     */
1951    public Intent(String action, Uri uri) {
1952        mAction = action;
1953        mData = uri;
1954    }
1955
1956    /**
1957     * Create an intent for a specific component.  All other fields (action, data,
1958     * type, class) are null, though they can be modified later with explicit
1959     * calls.  This provides a convenient way to create an intent that is
1960     * intended to execute a hard-coded class name, rather than relying on the
1961     * system to find an appropriate class for you; see {@link #setComponent}
1962     * for more information on the repercussions of this.
1963     *
1964     * @param packageContext A Context of the application package implementing
1965     * this class.
1966     * @param cls The component class that is to be used for the intent.
1967     *
1968     * @see #setClass
1969     * @see #setComponent
1970     * @see #Intent(String, android.net.Uri , Context, Class)
1971     */
1972    public Intent(Context packageContext, Class<?> cls) {
1973        mComponent = new ComponentName(packageContext, cls);
1974    }
1975
1976    /**
1977     * Create an intent for a specific component with a specified action and data.
1978     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
1979     * construct the Intent and then calling {@link #setClass} to set its
1980     * class.
1981     *
1982     * @param action The Intent action, such as ACTION_VIEW.
1983     * @param uri The Intent data URI.
1984     * @param packageContext A Context of the application package implementing
1985     * this class.
1986     * @param cls The component class that is to be used for the intent.
1987     *
1988     * @see #Intent(String, android.net.Uri)
1989     * @see #Intent(Context, Class)
1990     * @see #setClass
1991     * @see #setComponent
1992     */
1993    public Intent(String action, Uri uri,
1994            Context packageContext, Class<?> cls) {
1995        mAction = action;
1996        mData = uri;
1997        mComponent = new ComponentName(packageContext, cls);
1998    }
1999
2000    /**
2001     * Create an intent from a URI.  This URI may encode the action,
2002     * category, and other intent fields, if it was returned by toURI().  If
2003     * the Intent was not generate by toURI(), its data will be the entire URI
2004     * and its action will be ACTION_VIEW.
2005     *
2006     * <p>The URI given here must not be relative -- that is, it must include
2007     * the scheme and full path.
2008     *
2009     * @param uri The URI to turn into an Intent.
2010     *
2011     * @return Intent The newly created Intent object.
2012     *
2013     * @see #toURI
2014     */
2015    public static Intent getIntent(String uri) throws URISyntaxException {
2016        int i = 0;
2017        try {
2018            // simple case
2019            i = uri.lastIndexOf("#");
2020            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2021
2022            // old format Intent URI
2023            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2024
2025            // new format
2026            Intent intent = new Intent(ACTION_VIEW);
2027
2028            // fetch data part, if present
2029            if (i > 0) {
2030                intent.mData = Uri.parse(uri.substring(0, i));
2031            }
2032            i += "#Intent;".length();
2033
2034            // loop over contents of Intent, all name=value;
2035            while (!uri.startsWith("end", i)) {
2036                int eq = uri.indexOf('=', i);
2037                int semi = uri.indexOf(';', eq);
2038                String value = uri.substring(eq + 1, semi);
2039
2040                // action
2041                if (uri.startsWith("action=", i)) {
2042                    intent.mAction = value;
2043                }
2044
2045                // categories
2046                else if (uri.startsWith("category=", i)) {
2047                    intent.addCategory(value);
2048                }
2049
2050                // type
2051                else if (uri.startsWith("type=", i)) {
2052                    intent.mType = value;
2053                }
2054
2055                // launch  flags
2056                else if (uri.startsWith("launchFlags=", i)) {
2057                    intent.mFlags = Integer.decode(value).intValue();
2058                }
2059
2060                // component
2061                else if (uri.startsWith("component=", i)) {
2062                    intent.mComponent = ComponentName.unflattenFromString(value);
2063                }
2064
2065                // extra
2066                else {
2067                    String key = Uri.decode(uri.substring(i + 2, eq));
2068                    value = Uri.decode(value);
2069                    // create Bundle if it doesn't already exist
2070                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2071                    Bundle b = intent.mExtras;
2072                    // add EXTRA
2073                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2074                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2075                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2076                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2077                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2078                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2079                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2080                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2081                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2082                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2083                }
2084
2085                // move to the next item
2086                i = semi + 1;
2087            }
2088
2089            return intent;
2090
2091        } catch (IndexOutOfBoundsException e) {
2092            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2093        }
2094    }
2095
2096    public static Intent getIntentOld(String uri) throws URISyntaxException {
2097        Intent intent;
2098
2099        int i = uri.lastIndexOf('#');
2100        if (i >= 0) {
2101            Uri data = null;
2102            String action = null;
2103            if (i > 0) {
2104                data = Uri.parse(uri.substring(0, i));
2105            }
2106
2107            i++;
2108
2109            if (uri.regionMatches(i, "action(", 0, 7)) {
2110                i += 7;
2111                int j = uri.indexOf(')', i);
2112                action = uri.substring(i, j);
2113                i = j + 1;
2114            }
2115
2116            intent = new Intent(action, data);
2117
2118            if (uri.regionMatches(i, "categories(", 0, 11)) {
2119                i += 11;
2120                int j = uri.indexOf(')', i);
2121                while (i < j) {
2122                    int sep = uri.indexOf('!', i);
2123                    if (sep < 0) sep = j;
2124                    if (i < sep) {
2125                        intent.addCategory(uri.substring(i, sep));
2126                    }
2127                    i = sep + 1;
2128                }
2129                i = j + 1;
2130            }
2131
2132            if (uri.regionMatches(i, "type(", 0, 5)) {
2133                i += 5;
2134                int j = uri.indexOf(')', i);
2135                intent.mType = uri.substring(i, j);
2136                i = j + 1;
2137            }
2138
2139            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2140                i += 12;
2141                int j = uri.indexOf(')', i);
2142                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2143                i = j + 1;
2144            }
2145
2146            if (uri.regionMatches(i, "component(", 0, 10)) {
2147                i += 10;
2148                int j = uri.indexOf(')', i);
2149                int sep = uri.indexOf('!', i);
2150                if (sep >= 0 && sep < j) {
2151                    String pkg = uri.substring(i, sep);
2152                    String cls = uri.substring(sep + 1, j);
2153                    intent.mComponent = new ComponentName(pkg, cls);
2154                }
2155                i = j + 1;
2156            }
2157
2158            if (uri.regionMatches(i, "extras(", 0, 7)) {
2159                i += 7;
2160
2161                final int closeParen = uri.indexOf(')', i);
2162                if (closeParen == -1) throw new URISyntaxException(uri,
2163                        "EXTRA missing trailing ')'", i);
2164
2165                while (i < closeParen) {
2166                    // fetch the key value
2167                    int j = uri.indexOf('=', i);
2168                    if (j <= i + 1 || i >= closeParen) {
2169                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2170                    }
2171                    char type = uri.charAt(i);
2172                    i++;
2173                    String key = uri.substring(i, j);
2174                    i = j + 1;
2175
2176                    // get type-value
2177                    j = uri.indexOf('!', i);
2178                    if (j == -1 || j >= closeParen) j = closeParen;
2179                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2180                    String value = uri.substring(i, j);
2181                    i = j;
2182
2183                    // create Bundle if it doesn't already exist
2184                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2185
2186                    // add item to bundle
2187                    try {
2188                        switch (type) {
2189                            case 'S':
2190                                intent.mExtras.putString(key, Uri.decode(value));
2191                                break;
2192                            case 'B':
2193                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2194                                break;
2195                            case 'b':
2196                                intent.mExtras.putByte(key, Byte.parseByte(value));
2197                                break;
2198                            case 'c':
2199                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2200                                break;
2201                            case 'd':
2202                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2203                                break;
2204                            case 'f':
2205                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2206                                break;
2207                            case 'i':
2208                                intent.mExtras.putInt(key, Integer.parseInt(value));
2209                                break;
2210                            case 'l':
2211                                intent.mExtras.putLong(key, Long.parseLong(value));
2212                                break;
2213                            case 's':
2214                                intent.mExtras.putShort(key, Short.parseShort(value));
2215                                break;
2216                            default:
2217                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2218                        }
2219                    } catch (NumberFormatException e) {
2220                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2221                    }
2222
2223                    char ch = uri.charAt(i);
2224                    if (ch == ')') break;
2225                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2226                    i++;
2227                }
2228            }
2229
2230            if (intent.mAction == null) {
2231                // By default, if no action is specified, then use VIEW.
2232                intent.mAction = ACTION_VIEW;
2233            }
2234
2235        } else {
2236            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2237        }
2238
2239        return intent;
2240    }
2241
2242    /**
2243     * Retrieve the general action to be performed, such as
2244     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2245     * the information in the intent should be interpreted -- most importantly,
2246     * what to do with the data returned by {@link #getData}.
2247     *
2248     * @return The action of this intent or null if none is specified.
2249     *
2250     * @see #setAction
2251     */
2252    public String getAction() {
2253        return mAction;
2254    }
2255
2256    /**
2257     * Retrieve data this intent is operating on.  This URI specifies the name
2258     * of the data; often it uses the content: scheme, specifying data in a
2259     * content provider.  Other schemes may be handled by specific activities,
2260     * such as http: by the web browser.
2261     *
2262     * @return The URI of the data this intent is targeting or null.
2263     *
2264     * @see #getScheme
2265     * @see #setData
2266     */
2267    public Uri getData() {
2268        return mData;
2269    }
2270
2271    /**
2272     * The same as {@link #getData()}, but returns the URI as an encoded
2273     * String.
2274     */
2275    public String getDataString() {
2276        return mData != null ? mData.toString() : null;
2277    }
2278
2279    /**
2280     * Return the scheme portion of the intent's data.  If the data is null or
2281     * does not include a scheme, null is returned.  Otherwise, the scheme
2282     * prefix without the final ':' is returned, i.e. "http".
2283     *
2284     * <p>This is the same as calling getData().getScheme() (and checking for
2285     * null data).
2286     *
2287     * @return The scheme of this intent.
2288     *
2289     * @see #getData
2290     */
2291    public String getScheme() {
2292        return mData != null ? mData.getScheme() : null;
2293    }
2294
2295    /**
2296     * Retrieve any explicit MIME type included in the intent.  This is usually
2297     * null, as the type is determined by the intent data.
2298     *
2299     * @return If a type was manually set, it is returned; else null is
2300     *         returned.
2301     *
2302     * @see #resolveType(ContentResolver)
2303     * @see #setType
2304     */
2305    public String getType() {
2306        return mType;
2307    }
2308
2309    /**
2310     * Return the MIME data type of this intent.  If the type field is
2311     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2312     * the type of that data is returned.  If neither fields are set, a null is
2313     * returned.
2314     *
2315     * @return The MIME type of this intent.
2316     *
2317     * @see #getType
2318     * @see #resolveType(ContentResolver)
2319     */
2320    public String resolveType(Context context) {
2321        return resolveType(context.getContentResolver());
2322    }
2323
2324    /**
2325     * Return the MIME data type of this intent.  If the type field is
2326     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2327     * the type of that data is returned.  If neither fields are set, a null is
2328     * returned.
2329     *
2330     * @param resolver A ContentResolver that can be used to determine the MIME
2331     *                 type of the intent's data.
2332     *
2333     * @return The MIME type of this intent.
2334     *
2335     * @see #getType
2336     * @see #resolveType(Context)
2337     */
2338    public String resolveType(ContentResolver resolver) {
2339        if (mType != null) {
2340            return mType;
2341        }
2342        if (mData != null) {
2343            if ("content".equals(mData.getScheme())) {
2344                return resolver.getType(mData);
2345            }
2346        }
2347        return null;
2348    }
2349
2350    /**
2351     * Return the MIME data type of this intent, only if it will be needed for
2352     * intent resolution.  This is not generally useful for application code;
2353     * it is used by the frameworks for communicating with back-end system
2354     * services.
2355     *
2356     * @param resolver A ContentResolver that can be used to determine the MIME
2357     *                 type of the intent's data.
2358     *
2359     * @return The MIME type of this intent, or null if it is unknown or not
2360     *         needed.
2361     */
2362    public String resolveTypeIfNeeded(ContentResolver resolver) {
2363        if (mComponent != null) {
2364            return mType;
2365        }
2366        return resolveType(resolver);
2367    }
2368
2369    /**
2370     * Check if an category exists in the intent.
2371     *
2372     * @param category The category to check.
2373     *
2374     * @return boolean True if the intent contains the category, else false.
2375     *
2376     * @see #getCategories
2377     * @see #addCategory
2378     */
2379    public boolean hasCategory(String category) {
2380        return mCategories != null && mCategories.contains(category);
2381    }
2382
2383    /**
2384     * Return the set of all categories in the intent.  If there are no categories,
2385     * returns NULL.
2386     *
2387     * @return Set The set of categories you can examine.  Do not modify!
2388     *
2389     * @see #hasCategory
2390     * @see #addCategory
2391     */
2392    public Set<String> getCategories() {
2393        return mCategories;
2394    }
2395
2396    /**
2397     * Sets the ClassLoader that will be used when unmarshalling
2398     * any Parcelable values from the extras of this Intent.
2399     *
2400     * @param loader a ClassLoader, or null to use the default loader
2401     * at the time of unmarshalling.
2402     */
2403    public void setExtrasClassLoader(ClassLoader loader) {
2404        if (mExtras != null) {
2405            mExtras.setClassLoader(loader);
2406        }
2407    }
2408
2409    /**
2410     * Returns true if an extra value is associated with the given name.
2411     * @param name the extra's name
2412     * @return true if the given extra is present.
2413     */
2414    public boolean hasExtra(String name) {
2415        return mExtras != null && mExtras.containsKey(name);
2416    }
2417
2418    /**
2419     * Returns true if the Intent's extras contain a parcelled file descriptor.
2420     * @return true if the Intent contains a parcelled file descriptor.
2421     */
2422    public boolean hasFileDescriptors() {
2423        return mExtras != null && mExtras.hasFileDescriptors();
2424    }
2425
2426    /**
2427     * Retrieve extended data from the intent.
2428     *
2429     * @param name The name of the desired item.
2430     *
2431     * @return the value of an item that previously added with putExtra()
2432     * or null if none was found.
2433     *
2434     * @deprecated
2435     * @hide
2436     */
2437    @Deprecated
2438    public Object getExtra(String name) {
2439        return getExtra(name, null);
2440    }
2441
2442    /**
2443     * Retrieve extended data from the intent.
2444     *
2445     * @param name The name of the desired item.
2446     * @param defaultValue the value to be returned if no value of the desired
2447     * type is stored with the given name.
2448     *
2449     * @return the value of an item that previously added with putExtra()
2450     * or the default value if none was found.
2451     *
2452     * @see #putExtra(String, boolean)
2453     */
2454    public boolean getBooleanExtra(String name, boolean defaultValue) {
2455        return mExtras == null ? defaultValue :
2456            mExtras.getBoolean(name, defaultValue);
2457    }
2458
2459    /**
2460     * Retrieve extended data from the intent.
2461     *
2462     * @param name The name of the desired item.
2463     * @param defaultValue the value to be returned if no value of the desired
2464     * type is stored with the given name.
2465     *
2466     * @return the value of an item that previously added with putExtra()
2467     * or the default value if none was found.
2468     *
2469     * @see #putExtra(String, byte)
2470     */
2471    public byte getByteExtra(String name, byte defaultValue) {
2472        return mExtras == null ? defaultValue :
2473            mExtras.getByte(name, defaultValue);
2474    }
2475
2476    /**
2477     * Retrieve extended data from the intent.
2478     *
2479     * @param name The name of the desired item.
2480     * @param defaultValue the value to be returned if no value of the desired
2481     * type is stored with the given name.
2482     *
2483     * @return the value of an item that previously added with putExtra()
2484     * or the default value if none was found.
2485     *
2486     * @see #putExtra(String, short)
2487     */
2488    public short getShortExtra(String name, short defaultValue) {
2489        return mExtras == null ? defaultValue :
2490            mExtras.getShort(name, defaultValue);
2491    }
2492
2493    /**
2494     * Retrieve extended data from the intent.
2495     *
2496     * @param name The name of the desired item.
2497     * @param defaultValue the value to be returned if no value of the desired
2498     * type is stored with the given name.
2499     *
2500     * @return the value of an item that previously added with putExtra()
2501     * or the default value if none was found.
2502     *
2503     * @see #putExtra(String, char)
2504     */
2505    public char getCharExtra(String name, char defaultValue) {
2506        return mExtras == null ? defaultValue :
2507            mExtras.getChar(name, defaultValue);
2508    }
2509
2510    /**
2511     * Retrieve extended data from the intent.
2512     *
2513     * @param name The name of the desired item.
2514     * @param defaultValue the value to be returned if no value of the desired
2515     * type is stored with the given name.
2516     *
2517     * @return the value of an item that previously added with putExtra()
2518     * or the default value if none was found.
2519     *
2520     * @see #putExtra(String, int)
2521     */
2522    public int getIntExtra(String name, int defaultValue) {
2523        return mExtras == null ? defaultValue :
2524            mExtras.getInt(name, defaultValue);
2525    }
2526
2527    /**
2528     * Retrieve extended data from the intent.
2529     *
2530     * @param name The name of the desired item.
2531     * @param defaultValue the value to be returned if no value of the desired
2532     * type is stored with the given name.
2533     *
2534     * @return the value of an item that previously added with putExtra()
2535     * or the default value if none was found.
2536     *
2537     * @see #putExtra(String, long)
2538     */
2539    public long getLongExtra(String name, long defaultValue) {
2540        return mExtras == null ? defaultValue :
2541            mExtras.getLong(name, defaultValue);
2542    }
2543
2544    /**
2545     * Retrieve extended data from the intent.
2546     *
2547     * @param name The name of the desired item.
2548     * @param defaultValue the value to be returned if no value of the desired
2549     * type is stored with the given name.
2550     *
2551     * @return the value of an item that previously added with putExtra(),
2552     * or the default value if no such item is present
2553     *
2554     * @see #putExtra(String, float)
2555     */
2556    public float getFloatExtra(String name, float defaultValue) {
2557        return mExtras == null ? defaultValue :
2558            mExtras.getFloat(name, defaultValue);
2559    }
2560
2561    /**
2562     * Retrieve extended data from the intent.
2563     *
2564     * @param name The name of the desired item.
2565     * @param defaultValue the value to be returned if no value of the desired
2566     * type is stored with the given name.
2567     *
2568     * @return the value of an item that previously added with putExtra()
2569     * or the default value if none was found.
2570     *
2571     * @see #putExtra(String, double)
2572     */
2573    public double getDoubleExtra(String name, double defaultValue) {
2574        return mExtras == null ? defaultValue :
2575            mExtras.getDouble(name, defaultValue);
2576    }
2577
2578    /**
2579     * Retrieve extended data from the intent.
2580     *
2581     * @param name The name of the desired item.
2582     *
2583     * @return the value of an item that previously added with putExtra()
2584     * or null if no String value was found.
2585     *
2586     * @see #putExtra(String, String)
2587     */
2588    public String getStringExtra(String name) {
2589        return mExtras == null ? null : mExtras.getString(name);
2590    }
2591
2592    /**
2593     * Retrieve extended data from the intent.
2594     *
2595     * @param name The name of the desired item.
2596     *
2597     * @return the value of an item that previously added with putExtra()
2598     * or null if no CharSequence value was found.
2599     *
2600     * @see #putExtra(String, CharSequence)
2601     */
2602    public CharSequence getCharSequenceExtra(String name) {
2603        return mExtras == null ? null : mExtras.getCharSequence(name);
2604    }
2605
2606    /**
2607     * Retrieve extended data from the intent.
2608     *
2609     * @param name The name of the desired item.
2610     *
2611     * @return the value of an item that previously added with putExtra()
2612     * or null if no Parcelable value was found.
2613     *
2614     * @see #putExtra(String, Parcelable)
2615     */
2616    public <T extends Parcelable> T getParcelableExtra(String name) {
2617        return mExtras == null ? null : mExtras.<T>getParcelable(name);
2618    }
2619
2620    /**
2621     * Retrieve extended data from the intent.
2622     *
2623     * @param name The name of the desired item.
2624     *
2625     * @return the value of an item that previously added with putExtra()
2626     * or null if no Parcelable[] value was found.
2627     *
2628     * @see #putExtra(String, Parcelable[])
2629     */
2630    public Parcelable[] getParcelableArrayExtra(String name) {
2631        return mExtras == null ? null : mExtras.getParcelableArray(name);
2632    }
2633
2634    /**
2635     * Retrieve extended data from the intent.
2636     *
2637     * @param name The name of the desired item.
2638     *
2639     * @return the value of an item that previously added with putExtra()
2640     * or null if no ArrayList<Parcelable> value was found.
2641     *
2642     * @see #putParcelableArrayListExtra(String, ArrayList)
2643     */
2644    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
2645        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
2646    }
2647
2648    /**
2649     * Retrieve extended data from the intent.
2650     *
2651     * @param name The name of the desired item.
2652     *
2653     * @return the value of an item that previously added with putExtra()
2654     * or null if no Serializable value was found.
2655     *
2656     * @see #putExtra(String, Serializable)
2657     */
2658    public Serializable getSerializableExtra(String name) {
2659        return mExtras == null ? null : mExtras.getSerializable(name);
2660    }
2661
2662    /**
2663     * Retrieve extended data from the intent.
2664     *
2665     * @param name The name of the desired item.
2666     *
2667     * @return the value of an item that previously added with putExtra()
2668     * or null if no ArrayList<Integer> value was found.
2669     *
2670     * @see #putIntegerArrayListExtra(String, ArrayList)
2671     */
2672    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
2673        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
2674    }
2675
2676    /**
2677     * Retrieve extended data from the intent.
2678     *
2679     * @param name The name of the desired item.
2680     *
2681     * @return the value of an item that previously added with putExtra()
2682     * or null if no ArrayList<String> value was found.
2683     *
2684     * @see #putStringArrayListExtra(String, ArrayList)
2685     */
2686    public ArrayList<String> getStringArrayListExtra(String name) {
2687        return mExtras == null ? null : mExtras.getStringArrayList(name);
2688    }
2689
2690    /**
2691     * Retrieve extended data from the intent.
2692     *
2693     * @param name The name of the desired item.
2694     *
2695     * @return the value of an item that previously added with putExtra()
2696     * or null if no boolean array value was found.
2697     *
2698     * @see #putExtra(String, boolean[])
2699     */
2700    public boolean[] getBooleanArrayExtra(String name) {
2701        return mExtras == null ? null : mExtras.getBooleanArray(name);
2702    }
2703
2704    /**
2705     * Retrieve extended data from the intent.
2706     *
2707     * @param name The name of the desired item.
2708     *
2709     * @return the value of an item that previously added with putExtra()
2710     * or null if no byte array value was found.
2711     *
2712     * @see #putExtra(String, byte[])
2713     */
2714    public byte[] getByteArrayExtra(String name) {
2715        return mExtras == null ? null : mExtras.getByteArray(name);
2716    }
2717
2718    /**
2719     * Retrieve extended data from the intent.
2720     *
2721     * @param name The name of the desired item.
2722     *
2723     * @return the value of an item that previously added with putExtra()
2724     * or null if no short array value was found.
2725     *
2726     * @see #putExtra(String, short[])
2727     */
2728    public short[] getShortArrayExtra(String name) {
2729        return mExtras == null ? null : mExtras.getShortArray(name);
2730    }
2731
2732    /**
2733     * Retrieve extended data from the intent.
2734     *
2735     * @param name The name of the desired item.
2736     *
2737     * @return the value of an item that previously added with putExtra()
2738     * or null if no char array value was found.
2739     *
2740     * @see #putExtra(String, char[])
2741     */
2742    public char[] getCharArrayExtra(String name) {
2743        return mExtras == null ? null : mExtras.getCharArray(name);
2744    }
2745
2746    /**
2747     * Retrieve extended data from the intent.
2748     *
2749     * @param name The name of the desired item.
2750     *
2751     * @return the value of an item that previously added with putExtra()
2752     * or null if no int array value was found.
2753     *
2754     * @see #putExtra(String, int[])
2755     */
2756    public int[] getIntArrayExtra(String name) {
2757        return mExtras == null ? null : mExtras.getIntArray(name);
2758    }
2759
2760    /**
2761     * Retrieve extended data from the intent.
2762     *
2763     * @param name The name of the desired item.
2764     *
2765     * @return the value of an item that previously added with putExtra()
2766     * or null if no long array value was found.
2767     *
2768     * @see #putExtra(String, long[])
2769     */
2770    public long[] getLongArrayExtra(String name) {
2771        return mExtras == null ? null : mExtras.getLongArray(name);
2772    }
2773
2774    /**
2775     * Retrieve extended data from the intent.
2776     *
2777     * @param name The name of the desired item.
2778     *
2779     * @return the value of an item that previously added with putExtra()
2780     * or null if no float array value was found.
2781     *
2782     * @see #putExtra(String, float[])
2783     */
2784    public float[] getFloatArrayExtra(String name) {
2785        return mExtras == null ? null : mExtras.getFloatArray(name);
2786    }
2787
2788    /**
2789     * Retrieve extended data from the intent.
2790     *
2791     * @param name The name of the desired item.
2792     *
2793     * @return the value of an item that previously added with putExtra()
2794     * or null if no double array value was found.
2795     *
2796     * @see #putExtra(String, double[])
2797     */
2798    public double[] getDoubleArrayExtra(String name) {
2799        return mExtras == null ? null : mExtras.getDoubleArray(name);
2800    }
2801
2802    /**
2803     * Retrieve extended data from the intent.
2804     *
2805     * @param name The name of the desired item.
2806     *
2807     * @return the value of an item that previously added with putExtra()
2808     * or null if no String array value was found.
2809     *
2810     * @see #putExtra(String, String[])
2811     */
2812    public String[] getStringArrayExtra(String name) {
2813        return mExtras == null ? null : mExtras.getStringArray(name);
2814    }
2815
2816    /**
2817     * Retrieve extended data from the intent.
2818     *
2819     * @param name The name of the desired item.
2820     *
2821     * @return the value of an item that previously added with putExtra()
2822     * or null if no Bundle value was found.
2823     *
2824     * @see #putExtra(String, Bundle)
2825     */
2826    public Bundle getBundleExtra(String name) {
2827        return mExtras == null ? null : mExtras.getBundle(name);
2828    }
2829
2830    /**
2831     * Retrieve extended data from the intent.
2832     *
2833     * @param name The name of the desired item.
2834     *
2835     * @return the value of an item that previously added with putExtra()
2836     * or null if no IBinder value was found.
2837     *
2838     * @see #putExtra(String, IBinder)
2839     *
2840     * @deprecated
2841     * @hide
2842     */
2843    @Deprecated
2844    public IBinder getIBinderExtra(String name) {
2845        return mExtras == null ? null : mExtras.getIBinder(name);
2846    }
2847
2848    /**
2849     * Retrieve extended data from the intent.
2850     *
2851     * @param name The name of the desired item.
2852     * @param defaultValue The default value to return in case no item is
2853     * associated with the key 'name'
2854     *
2855     * @return the value of an item that previously added with putExtra()
2856     * or defaultValue if none was found.
2857     *
2858     * @see #putExtra
2859     *
2860     * @deprecated
2861     * @hide
2862     */
2863    @Deprecated
2864    public Object getExtra(String name, Object defaultValue) {
2865        Object result = defaultValue;
2866        if (mExtras != null) {
2867            Object result2 = mExtras.get(name);
2868            if (result2 != null) {
2869                result = result2;
2870            }
2871        }
2872
2873        return result;
2874    }
2875
2876    /**
2877     * Retrieves a map of extended data from the intent.
2878     *
2879     * @return the map of all extras previously added with putExtra(),
2880     * or null if none have been added.
2881     */
2882    public Bundle getExtras() {
2883        return (mExtras != null)
2884                ? new Bundle(mExtras)
2885                : null;
2886    }
2887
2888    /**
2889     * Retrieve any special flags associated with this intent.  You will
2890     * normally just set them with {@link #setFlags} and let the system
2891     * take the appropriate action with them.
2892     *
2893     * @return int The currently set flags.
2894     *
2895     * @see #setFlags
2896     */
2897    public int getFlags() {
2898        return mFlags;
2899    }
2900
2901    /**
2902     * Retrieve the concrete component associated with the intent.  When receiving
2903     * an intent, this is the component that was found to best handle it (that is,
2904     * yourself) and will always be non-null; in all other cases it will be
2905     * null unless explicitly set.
2906     *
2907     * @return The name of the application component to handle the intent.
2908     *
2909     * @see #resolveActivity
2910     * @see #setComponent
2911     */
2912    public ComponentName getComponent() {
2913        return mComponent;
2914    }
2915
2916    /**
2917     * Return the Activity component that should be used to handle this intent.
2918     * The appropriate component is determined based on the information in the
2919     * intent, evaluated as follows:
2920     *
2921     * <p>If {@link #getComponent} returns an explicit class, that is returned
2922     * without any further consideration.
2923     *
2924     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
2925     * category to be considered.
2926     *
2927     * <p>If {@link #getAction} is non-NULL, the activity must handle this
2928     * action.
2929     *
2930     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
2931     * this type.
2932     *
2933     * <p>If {@link #addCategory} has added any categories, the activity must
2934     * handle ALL of the categories specified.
2935     *
2936     * <p>If there are no activities that satisfy all of these conditions, a
2937     * null string is returned.
2938     *
2939     * <p>If multiple activities are found to satisfy the intent, the one with
2940     * the highest priority will be used.  If there are multiple activities
2941     * with the same priority, the system will either pick the best activity
2942     * based on user preference, or resolve to a system class that will allow
2943     * the user to pick an activity and forward from there.
2944     *
2945     * <p>This method is implemented simply by calling
2946     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
2947     * true.</p>
2948     * <p> This API is called for you as part of starting an activity from an
2949     * intent.  You do not normally need to call it yourself.</p>
2950     *
2951     * @param pm The package manager with which to resolve the Intent.
2952     *
2953     * @return Name of the component implementing an activity that can
2954     *         display the intent.
2955     *
2956     * @see #setComponent
2957     * @see #getComponent
2958     * @see #resolveActivityInfo
2959     */
2960    public ComponentName resolveActivity(PackageManager pm) {
2961        if (mComponent != null) {
2962            return mComponent;
2963        }
2964
2965        ResolveInfo info = pm.resolveActivity(
2966            this, PackageManager.MATCH_DEFAULT_ONLY);
2967        if (info != null) {
2968            return new ComponentName(
2969                    info.activityInfo.applicationInfo.packageName,
2970                    info.activityInfo.name);
2971        }
2972
2973        return null;
2974    }
2975
2976    /**
2977     * Resolve the Intent into an {@link ActivityInfo}
2978     * describing the activity that should execute the intent.  Resolution
2979     * follows the same rules as described for {@link #resolveActivity}, but
2980     * you get back the completely information about the resolved activity
2981     * instead of just its class name.
2982     *
2983     * @param pm The package manager with which to resolve the Intent.
2984     * @param flags Addition information to retrieve as per
2985     * {@link PackageManager#getActivityInfo(ComponentName, int)
2986     * PackageManager.getActivityInfo()}.
2987     *
2988     * @return PackageManager.ActivityInfo
2989     *
2990     * @see #resolveActivity
2991     */
2992    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
2993        ActivityInfo ai = null;
2994        if (mComponent != null) {
2995            try {
2996                ai = pm.getActivityInfo(mComponent, flags);
2997            } catch (PackageManager.NameNotFoundException e) {
2998                // ignore
2999            }
3000        } else {
3001            ResolveInfo info = pm.resolveActivity(
3002                this, PackageManager.MATCH_DEFAULT_ONLY);
3003            if (info != null) {
3004                ai = info.activityInfo;
3005            }
3006        }
3007
3008        return ai;
3009    }
3010
3011    /**
3012     * Set the general action to be performed.
3013     *
3014     * @param action An action name, such as ACTION_VIEW.  Application-specific
3015     *               actions should be prefixed with the vendor's package name.
3016     *
3017     * @return Returns the same Intent object, for chaining multiple calls
3018     * into a single statement.
3019     *
3020     * @see #getAction
3021     */
3022    public Intent setAction(String action) {
3023        mAction = action;
3024        return this;
3025    }
3026
3027    /**
3028     * Set the data this intent is operating on.  This method automatically
3029     * clears any type that was previously set by {@link #setType}.
3030     *
3031     * @param data The URI of the data this intent is now targeting.
3032     *
3033     * @return Returns the same Intent object, for chaining multiple calls
3034     * into a single statement.
3035     *
3036     * @see #getData
3037     * @see #setType
3038     * @see #setDataAndType
3039     */
3040    public Intent setData(Uri data) {
3041        mData = data;
3042        mType = null;
3043        return this;
3044    }
3045
3046    /**
3047     * Set an explicit MIME data type.  This is used to create intents that
3048     * only specify a type and not data, for example to indicate the type of
3049     * data to return.  This method automatically clears any data that was
3050     * previously set by {@link #setData}.
3051     *
3052     * @param type The MIME type of the data being handled by this intent.
3053     *
3054     * @return Returns the same Intent object, for chaining multiple calls
3055     * into a single statement.
3056     *
3057     * @see #getType
3058     * @see #setData
3059     * @see #setDataAndType
3060     */
3061    public Intent setType(String type) {
3062        mData = null;
3063        mType = type;
3064        return this;
3065    }
3066
3067    /**
3068     * (Usually optional) Set the data for the intent along with an explicit
3069     * MIME data type.  This method should very rarely be used -- it allows you
3070     * to override the MIME type that would ordinarily be inferred from the
3071     * data with your own type given here.
3072     *
3073     * @param data The URI of the data this intent is now targeting.
3074     * @param type The MIME type of the data being handled by this intent.
3075     *
3076     * @return Returns the same Intent object, for chaining multiple calls
3077     * into a single statement.
3078     *
3079     * @see #setData
3080     * @see #setType
3081     */
3082    public Intent setDataAndType(Uri data, String type) {
3083        mData = data;
3084        mType = type;
3085        return this;
3086    }
3087
3088    /**
3089     * Add a new category to the intent.  Categories provide additional detail
3090     * about the action the intent is perform.  When resolving an intent, only
3091     * activities that provide <em>all</em> of the requested categories will be
3092     * used.
3093     *
3094     * @param category The desired category.  This can be either one of the
3095     *               predefined Intent categories, or a custom category in your own
3096     *               namespace.
3097     *
3098     * @return Returns the same Intent object, for chaining multiple calls
3099     * into a single statement.
3100     *
3101     * @see #hasCategory
3102     * @see #removeCategory
3103     */
3104    public Intent addCategory(String category) {
3105        if (mCategories == null) {
3106            mCategories = new HashSet<String>();
3107        }
3108        mCategories.add(category);
3109        return this;
3110    }
3111
3112    /**
3113     * Remove an category from an intent.
3114     *
3115     * @param category The category to remove.
3116     *
3117     * @see #addCategory
3118     */
3119    public void removeCategory(String category) {
3120        if (mCategories != null) {
3121            mCategories.remove(category);
3122            if (mCategories.size() == 0) {
3123                mCategories = null;
3124            }
3125        }
3126    }
3127
3128    /**
3129     * Add extended data to the intent.  The name must include a package
3130     * prefix, for example the app com.android.contacts would use names
3131     * like "com.android.contacts.ShowAll".
3132     *
3133     * @param name The name of the extra data, with package prefix.
3134     * @param value The boolean data value.
3135     *
3136     * @return Returns the same Intent object, for chaining multiple calls
3137     * into a single statement.
3138     *
3139     * @see #putExtras
3140     * @see #removeExtra
3141     * @see #getBooleanExtra(String, boolean)
3142     */
3143    public Intent putExtra(String name, boolean value) {
3144        if (mExtras == null) {
3145            mExtras = new Bundle();
3146        }
3147        mExtras.putBoolean(name, value);
3148        return this;
3149    }
3150
3151    /**
3152     * Add extended data to the intent.  The name must include a package
3153     * prefix, for example the app com.android.contacts would use names
3154     * like "com.android.contacts.ShowAll".
3155     *
3156     * @param name The name of the extra data, with package prefix.
3157     * @param value The byte data value.
3158     *
3159     * @return Returns the same Intent object, for chaining multiple calls
3160     * into a single statement.
3161     *
3162     * @see #putExtras
3163     * @see #removeExtra
3164     * @see #getByteExtra(String, byte)
3165     */
3166    public Intent putExtra(String name, byte value) {
3167        if (mExtras == null) {
3168            mExtras = new Bundle();
3169        }
3170        mExtras.putByte(name, value);
3171        return this;
3172    }
3173
3174    /**
3175     * Add extended data to the intent.  The name must include a package
3176     * prefix, for example the app com.android.contacts would use names
3177     * like "com.android.contacts.ShowAll".
3178     *
3179     * @param name The name of the extra data, with package prefix.
3180     * @param value The char data value.
3181     *
3182     * @return Returns the same Intent object, for chaining multiple calls
3183     * into a single statement.
3184     *
3185     * @see #putExtras
3186     * @see #removeExtra
3187     * @see #getCharExtra(String, char)
3188     */
3189    public Intent putExtra(String name, char value) {
3190        if (mExtras == null) {
3191            mExtras = new Bundle();
3192        }
3193        mExtras.putChar(name, value);
3194        return this;
3195    }
3196
3197    /**
3198     * Add extended data to the intent.  The name must include a package
3199     * prefix, for example the app com.android.contacts would use names
3200     * like "com.android.contacts.ShowAll".
3201     *
3202     * @param name The name of the extra data, with package prefix.
3203     * @param value The short data value.
3204     *
3205     * @return Returns the same Intent object, for chaining multiple calls
3206     * into a single statement.
3207     *
3208     * @see #putExtras
3209     * @see #removeExtra
3210     * @see #getShortExtra(String, short)
3211     */
3212    public Intent putExtra(String name, short value) {
3213        if (mExtras == null) {
3214            mExtras = new Bundle();
3215        }
3216        mExtras.putShort(name, value);
3217        return this;
3218    }
3219
3220    /**
3221     * Add extended data to the intent.  The name must include a package
3222     * prefix, for example the app com.android.contacts would use names
3223     * like "com.android.contacts.ShowAll".
3224     *
3225     * @param name The name of the extra data, with package prefix.
3226     * @param value The integer data value.
3227     *
3228     * @return Returns the same Intent object, for chaining multiple calls
3229     * into a single statement.
3230     *
3231     * @see #putExtras
3232     * @see #removeExtra
3233     * @see #getIntExtra(String, int)
3234     */
3235    public Intent putExtra(String name, int value) {
3236        if (mExtras == null) {
3237            mExtras = new Bundle();
3238        }
3239        mExtras.putInt(name, value);
3240        return this;
3241    }
3242
3243    /**
3244     * Add extended data to the intent.  The name must include a package
3245     * prefix, for example the app com.android.contacts would use names
3246     * like "com.android.contacts.ShowAll".
3247     *
3248     * @param name The name of the extra data, with package prefix.
3249     * @param value The long data value.
3250     *
3251     * @return Returns the same Intent object, for chaining multiple calls
3252     * into a single statement.
3253     *
3254     * @see #putExtras
3255     * @see #removeExtra
3256     * @see #getLongExtra(String, long)
3257     */
3258    public Intent putExtra(String name, long value) {
3259        if (mExtras == null) {
3260            mExtras = new Bundle();
3261        }
3262        mExtras.putLong(name, value);
3263        return this;
3264    }
3265
3266    /**
3267     * Add extended data to the intent.  The name must include a package
3268     * prefix, for example the app com.android.contacts would use names
3269     * like "com.android.contacts.ShowAll".
3270     *
3271     * @param name The name of the extra data, with package prefix.
3272     * @param value The float data value.
3273     *
3274     * @return Returns the same Intent object, for chaining multiple calls
3275     * into a single statement.
3276     *
3277     * @see #putExtras
3278     * @see #removeExtra
3279     * @see #getFloatExtra(String, float)
3280     */
3281    public Intent putExtra(String name, float value) {
3282        if (mExtras == null) {
3283            mExtras = new Bundle();
3284        }
3285        mExtras.putFloat(name, value);
3286        return this;
3287    }
3288
3289    /**
3290     * Add extended data to the intent.  The name must include a package
3291     * prefix, for example the app com.android.contacts would use names
3292     * like "com.android.contacts.ShowAll".
3293     *
3294     * @param name The name of the extra data, with package prefix.
3295     * @param value The double data value.
3296     *
3297     * @return Returns the same Intent object, for chaining multiple calls
3298     * into a single statement.
3299     *
3300     * @see #putExtras
3301     * @see #removeExtra
3302     * @see #getDoubleExtra(String, double)
3303     */
3304    public Intent putExtra(String name, double value) {
3305        if (mExtras == null) {
3306            mExtras = new Bundle();
3307        }
3308        mExtras.putDouble(name, value);
3309        return this;
3310    }
3311
3312    /**
3313     * Add extended data to the intent.  The name must include a package
3314     * prefix, for example the app com.android.contacts would use names
3315     * like "com.android.contacts.ShowAll".
3316     *
3317     * @param name The name of the extra data, with package prefix.
3318     * @param value The String data value.
3319     *
3320     * @return Returns the same Intent object, for chaining multiple calls
3321     * into a single statement.
3322     *
3323     * @see #putExtras
3324     * @see #removeExtra
3325     * @see #getStringExtra(String)
3326     */
3327    public Intent putExtra(String name, String value) {
3328        if (mExtras == null) {
3329            mExtras = new Bundle();
3330        }
3331        mExtras.putString(name, value);
3332        return this;
3333    }
3334
3335    /**
3336     * Add extended data to the intent.  The name must include a package
3337     * prefix, for example the app com.android.contacts would use names
3338     * like "com.android.contacts.ShowAll".
3339     *
3340     * @param name The name of the extra data, with package prefix.
3341     * @param value The CharSequence data value.
3342     *
3343     * @return Returns the same Intent object, for chaining multiple calls
3344     * into a single statement.
3345     *
3346     * @see #putExtras
3347     * @see #removeExtra
3348     * @see #getCharSequenceExtra(String)
3349     */
3350    public Intent putExtra(String name, CharSequence value) {
3351        if (mExtras == null) {
3352            mExtras = new Bundle();
3353        }
3354        mExtras.putCharSequence(name, value);
3355        return this;
3356    }
3357
3358    /**
3359     * Add extended data to the intent.  The name must include a package
3360     * prefix, for example the app com.android.contacts would use names
3361     * like "com.android.contacts.ShowAll".
3362     *
3363     * @param name The name of the extra data, with package prefix.
3364     * @param value The Parcelable data value.
3365     *
3366     * @return Returns the same Intent object, for chaining multiple calls
3367     * into a single statement.
3368     *
3369     * @see #putExtras
3370     * @see #removeExtra
3371     * @see #getParcelableExtra(String)
3372     */
3373    public Intent putExtra(String name, Parcelable value) {
3374        if (mExtras == null) {
3375            mExtras = new Bundle();
3376        }
3377        mExtras.putParcelable(name, value);
3378        return this;
3379    }
3380
3381    /**
3382     * Add extended data to the intent.  The name must include a package
3383     * prefix, for example the app com.android.contacts would use names
3384     * like "com.android.contacts.ShowAll".
3385     *
3386     * @param name The name of the extra data, with package prefix.
3387     * @param value The Parcelable[] data value.
3388     *
3389     * @return Returns the same Intent object, for chaining multiple calls
3390     * into a single statement.
3391     *
3392     * @see #putExtras
3393     * @see #removeExtra
3394     * @see #getParcelableArrayExtra(String)
3395     */
3396    public Intent putExtra(String name, Parcelable[] value) {
3397        if (mExtras == null) {
3398            mExtras = new Bundle();
3399        }
3400        mExtras.putParcelableArray(name, value);
3401        return this;
3402    }
3403
3404    /**
3405     * Add extended data to the intent.  The name must include a package
3406     * prefix, for example the app com.android.contacts would use names
3407     * like "com.android.contacts.ShowAll".
3408     *
3409     * @param name The name of the extra data, with package prefix.
3410     * @param value The ArrayList<Parcelable> data value.
3411     *
3412     * @return Returns the same Intent object, for chaining multiple calls
3413     * into a single statement.
3414     *
3415     * @see #putExtras
3416     * @see #removeExtra
3417     * @see #getParcelableArrayListExtra(String)
3418     */
3419    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3420        if (mExtras == null) {
3421            mExtras = new Bundle();
3422        }
3423        mExtras.putParcelableArrayList(name, value);
3424        return this;
3425    }
3426
3427    /**
3428     * Add extended data to the intent.  The name must include a package
3429     * prefix, for example the app com.android.contacts would use names
3430     * like "com.android.contacts.ShowAll".
3431     *
3432     * @param name The name of the extra data, with package prefix.
3433     * @param value The ArrayList<Integer> data value.
3434     *
3435     * @return Returns the same Intent object, for chaining multiple calls
3436     * into a single statement.
3437     *
3438     * @see #putExtras
3439     * @see #removeExtra
3440     * @see #getIntegerArrayListExtra(String)
3441     */
3442    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3443        if (mExtras == null) {
3444            mExtras = new Bundle();
3445        }
3446        mExtras.putIntegerArrayList(name, value);
3447        return this;
3448    }
3449
3450    /**
3451     * Add extended data to the intent.  The name must include a package
3452     * prefix, for example the app com.android.contacts would use names
3453     * like "com.android.contacts.ShowAll".
3454     *
3455     * @param name The name of the extra data, with package prefix.
3456     * @param value The ArrayList<String> data value.
3457     *
3458     * @return Returns the same Intent object, for chaining multiple calls
3459     * into a single statement.
3460     *
3461     * @see #putExtras
3462     * @see #removeExtra
3463     * @see #getStringArrayListExtra(String)
3464     */
3465    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3466        if (mExtras == null) {
3467            mExtras = new Bundle();
3468        }
3469        mExtras.putStringArrayList(name, value);
3470        return this;
3471    }
3472
3473    /**
3474     * Add extended data to the intent.  The name must include a package
3475     * prefix, for example the app com.android.contacts would use names
3476     * like "com.android.contacts.ShowAll".
3477     *
3478     * @param name The name of the extra data, with package prefix.
3479     * @param value The Serializable data value.
3480     *
3481     * @return Returns the same Intent object, for chaining multiple calls
3482     * into a single statement.
3483     *
3484     * @see #putExtras
3485     * @see #removeExtra
3486     * @see #getSerializableExtra(String)
3487     */
3488    public Intent putExtra(String name, Serializable value) {
3489        if (mExtras == null) {
3490            mExtras = new Bundle();
3491        }
3492        mExtras.putSerializable(name, value);
3493        return this;
3494    }
3495
3496    /**
3497     * Add extended data to the intent.  The name must include a package
3498     * prefix, for example the app com.android.contacts would use names
3499     * like "com.android.contacts.ShowAll".
3500     *
3501     * @param name The name of the extra data, with package prefix.
3502     * @param value The boolean array data value.
3503     *
3504     * @return Returns the same Intent object, for chaining multiple calls
3505     * into a single statement.
3506     *
3507     * @see #putExtras
3508     * @see #removeExtra
3509     * @see #getBooleanArrayExtra(String)
3510     */
3511    public Intent putExtra(String name, boolean[] value) {
3512        if (mExtras == null) {
3513            mExtras = new Bundle();
3514        }
3515        mExtras.putBooleanArray(name, value);
3516        return this;
3517    }
3518
3519    /**
3520     * Add extended data to the intent.  The name must include a package
3521     * prefix, for example the app com.android.contacts would use names
3522     * like "com.android.contacts.ShowAll".
3523     *
3524     * @param name The name of the extra data, with package prefix.
3525     * @param value The byte array data value.
3526     *
3527     * @return Returns the same Intent object, for chaining multiple calls
3528     * into a single statement.
3529     *
3530     * @see #putExtras
3531     * @see #removeExtra
3532     * @see #getByteArrayExtra(String)
3533     */
3534    public Intent putExtra(String name, byte[] value) {
3535        if (mExtras == null) {
3536            mExtras = new Bundle();
3537        }
3538        mExtras.putByteArray(name, value);
3539        return this;
3540    }
3541
3542    /**
3543     * Add extended data to the intent.  The name must include a package
3544     * prefix, for example the app com.android.contacts would use names
3545     * like "com.android.contacts.ShowAll".
3546     *
3547     * @param name The name of the extra data, with package prefix.
3548     * @param value The short array data value.
3549     *
3550     * @return Returns the same Intent object, for chaining multiple calls
3551     * into a single statement.
3552     *
3553     * @see #putExtras
3554     * @see #removeExtra
3555     * @see #getShortArrayExtra(String)
3556     */
3557    public Intent putExtra(String name, short[] value) {
3558        if (mExtras == null) {
3559            mExtras = new Bundle();
3560        }
3561        mExtras.putShortArray(name, value);
3562        return this;
3563    }
3564
3565    /**
3566     * Add extended data to the intent.  The name must include a package
3567     * prefix, for example the app com.android.contacts would use names
3568     * like "com.android.contacts.ShowAll".
3569     *
3570     * @param name The name of the extra data, with package prefix.
3571     * @param value The char array data value.
3572     *
3573     * @return Returns the same Intent object, for chaining multiple calls
3574     * into a single statement.
3575     *
3576     * @see #putExtras
3577     * @see #removeExtra
3578     * @see #getCharArrayExtra(String)
3579     */
3580    public Intent putExtra(String name, char[] value) {
3581        if (mExtras == null) {
3582            mExtras = new Bundle();
3583        }
3584        mExtras.putCharArray(name, value);
3585        return this;
3586    }
3587
3588    /**
3589     * Add extended data to the intent.  The name must include a package
3590     * prefix, for example the app com.android.contacts would use names
3591     * like "com.android.contacts.ShowAll".
3592     *
3593     * @param name The name of the extra data, with package prefix.
3594     * @param value The int array data value.
3595     *
3596     * @return Returns the same Intent object, for chaining multiple calls
3597     * into a single statement.
3598     *
3599     * @see #putExtras
3600     * @see #removeExtra
3601     * @see #getIntArrayExtra(String)
3602     */
3603    public Intent putExtra(String name, int[] value) {
3604        if (mExtras == null) {
3605            mExtras = new Bundle();
3606        }
3607        mExtras.putIntArray(name, value);
3608        return this;
3609    }
3610
3611    /**
3612     * Add extended data to the intent.  The name must include a package
3613     * prefix, for example the app com.android.contacts would use names
3614     * like "com.android.contacts.ShowAll".
3615     *
3616     * @param name The name of the extra data, with package prefix.
3617     * @param value The byte array data value.
3618     *
3619     * @return Returns the same Intent object, for chaining multiple calls
3620     * into a single statement.
3621     *
3622     * @see #putExtras
3623     * @see #removeExtra
3624     * @see #getLongArrayExtra(String)
3625     */
3626    public Intent putExtra(String name, long[] value) {
3627        if (mExtras == null) {
3628            mExtras = new Bundle();
3629        }
3630        mExtras.putLongArray(name, value);
3631        return this;
3632    }
3633
3634    /**
3635     * Add extended data to the intent.  The name must include a package
3636     * prefix, for example the app com.android.contacts would use names
3637     * like "com.android.contacts.ShowAll".
3638     *
3639     * @param name The name of the extra data, with package prefix.
3640     * @param value The float array data value.
3641     *
3642     * @return Returns the same Intent object, for chaining multiple calls
3643     * into a single statement.
3644     *
3645     * @see #putExtras
3646     * @see #removeExtra
3647     * @see #getFloatArrayExtra(String)
3648     */
3649    public Intent putExtra(String name, float[] value) {
3650        if (mExtras == null) {
3651            mExtras = new Bundle();
3652        }
3653        mExtras.putFloatArray(name, value);
3654        return this;
3655    }
3656
3657    /**
3658     * Add extended data to the intent.  The name must include a package
3659     * prefix, for example the app com.android.contacts would use names
3660     * like "com.android.contacts.ShowAll".
3661     *
3662     * @param name The name of the extra data, with package prefix.
3663     * @param value The double array data value.
3664     *
3665     * @return Returns the same Intent object, for chaining multiple calls
3666     * into a single statement.
3667     *
3668     * @see #putExtras
3669     * @see #removeExtra
3670     * @see #getDoubleArrayExtra(String)
3671     */
3672    public Intent putExtra(String name, double[] value) {
3673        if (mExtras == null) {
3674            mExtras = new Bundle();
3675        }
3676        mExtras.putDoubleArray(name, value);
3677        return this;
3678    }
3679
3680    /**
3681     * Add extended data to the intent.  The name must include a package
3682     * prefix, for example the app com.android.contacts would use names
3683     * like "com.android.contacts.ShowAll".
3684     *
3685     * @param name The name of the extra data, with package prefix.
3686     * @param value The String array data value.
3687     *
3688     * @return Returns the same Intent object, for chaining multiple calls
3689     * into a single statement.
3690     *
3691     * @see #putExtras
3692     * @see #removeExtra
3693     * @see #getStringArrayExtra(String)
3694     */
3695    public Intent putExtra(String name, String[] value) {
3696        if (mExtras == null) {
3697            mExtras = new Bundle();
3698        }
3699        mExtras.putStringArray(name, value);
3700        return this;
3701    }
3702
3703    /**
3704     * Add extended data to the intent.  The name must include a package
3705     * prefix, for example the app com.android.contacts would use names
3706     * like "com.android.contacts.ShowAll".
3707     *
3708     * @param name The name of the extra data, with package prefix.
3709     * @param value The Bundle data value.
3710     *
3711     * @return Returns the same Intent object, for chaining multiple calls
3712     * into a single statement.
3713     *
3714     * @see #putExtras
3715     * @see #removeExtra
3716     * @see #getBundleExtra(String)
3717     */
3718    public Intent putExtra(String name, Bundle value) {
3719        if (mExtras == null) {
3720            mExtras = new Bundle();
3721        }
3722        mExtras.putBundle(name, value);
3723        return this;
3724    }
3725
3726    /**
3727     * Add extended data to the intent.  The name must include a package
3728     * prefix, for example the app com.android.contacts would use names
3729     * like "com.android.contacts.ShowAll".
3730     *
3731     * @param name The name of the extra data, with package prefix.
3732     * @param value The IBinder data value.
3733     *
3734     * @return Returns the same Intent object, for chaining multiple calls
3735     * into a single statement.
3736     *
3737     * @see #putExtras
3738     * @see #removeExtra
3739     * @see #getIBinderExtra(String)
3740     *
3741     * @deprecated
3742     * @hide
3743     */
3744    @Deprecated
3745    public Intent putExtra(String name, IBinder value) {
3746        if (mExtras == null) {
3747            mExtras = new Bundle();
3748        }
3749        mExtras.putIBinder(name, value);
3750        return this;
3751    }
3752
3753    /**
3754     * Copy all extras in 'src' in to this intent.
3755     *
3756     * @param src Contains the extras to copy.
3757     *
3758     * @see #putExtra
3759     */
3760    public Intent putExtras(Intent src) {
3761        if (src.mExtras != null) {
3762            if (mExtras == null) {
3763                mExtras = new Bundle(src.mExtras);
3764            } else {
3765                mExtras.putAll(src.mExtras);
3766            }
3767        }
3768        return this;
3769    }
3770
3771    /**
3772     * Add a set of extended data to the intent.  The keys must include a package
3773     * prefix, for example the app com.android.contacts would use names
3774     * like "com.android.contacts.ShowAll".
3775     *
3776     * @param extras The Bundle of extras to add to this intent.
3777     *
3778     * @see #putExtra
3779     * @see #removeExtra
3780     */
3781    public Intent putExtras(Bundle extras) {
3782        if (mExtras == null) {
3783            mExtras = new Bundle();
3784        }
3785        mExtras.putAll(extras);
3786        return this;
3787    }
3788
3789    /**
3790     * Completely replace the extras in the Intent with the extras in the
3791     * given Intent.
3792     *
3793     * @param src The exact extras contained in this Intent are copied
3794     * into the target intent, replacing any that were previously there.
3795     */
3796    public Intent replaceExtras(Intent src) {
3797        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
3798        return this;
3799    }
3800
3801    /**
3802     * Completely replace the extras in the Intent with the given Bundle of
3803     * extras.
3804     *
3805     * @param extras The new set of extras in the Intent, or null to erase
3806     * all extras.
3807     */
3808    public Intent replaceExtras(Bundle extras) {
3809        mExtras = extras != null ? new Bundle(extras) : null;
3810        return this;
3811    }
3812
3813    /**
3814     * Remove extended data from the intent.
3815     *
3816     * @see #putExtra
3817     */
3818    public void removeExtra(String name) {
3819        if (mExtras != null) {
3820            mExtras.remove(name);
3821            if (mExtras.size() == 0) {
3822                mExtras = null;
3823            }
3824        }
3825    }
3826
3827    /**
3828     * Set special flags controlling how this intent is handled.  Most values
3829     * here depend on the type of component being executed by the Intent,
3830     * specifically the FLAG_ACTIVITY_* flags are all for use with
3831     * {@link Context#startActivity Context.startActivity()} and the
3832     * FLAG_RECEIVER_* flags are all for use with
3833     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
3834     *
3835     * <p>See the <a href="{@docRoot}intro/appmodel.html">Application Model</a>
3836     * documentation for important information on how some of these options impact
3837     * the behavior of your application.
3838     *
3839     * @param flags The desired flags.
3840     *
3841     * @return Returns the same Intent object, for chaining multiple calls
3842     * into a single statement.
3843     *
3844     * @see #getFlags
3845     * @see #addFlags
3846     *
3847     * @see #FLAG_GRANT_READ_URI_PERMISSION
3848     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
3849     * @see #FLAG_DEBUG_LOG_RESOLUTION
3850     * @see #FLAG_FROM_BACKGROUND
3851     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
3852     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
3853     * @see #FLAG_ACTIVITY_CLEAR_TOP
3854     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
3855     * @see #FLAG_ACTIVITY_FORWARD_RESULT
3856     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
3857     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
3858     * @see #FLAG_ACTIVITY_NEW_TASK
3859     * @see #FLAG_ACTIVITY_NO_HISTORY
3860     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
3861     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
3862     * @see #FLAG_ACTIVITY_SINGLE_TOP
3863     * @see #FLAG_RECEIVER_REGISTERED_ONLY
3864     */
3865    public Intent setFlags(int flags) {
3866        mFlags = flags;
3867        return this;
3868    }
3869
3870    /**
3871     * Add additional flags to the intent (or with existing flags
3872     * value).
3873     *
3874     * @param flags The new flags to set.
3875     *
3876     * @return Returns the same Intent object, for chaining multiple calls
3877     * into a single statement.
3878     *
3879     * @see #setFlags
3880     */
3881    public Intent addFlags(int flags) {
3882        mFlags |= flags;
3883        return this;
3884    }
3885
3886    /**
3887     * (Usually optional) Explicitly set the component to handle the intent.
3888     * If left with the default value of null, the system will determine the
3889     * appropriate class to use based on the other fields (action, data,
3890     * type, categories) in the Intent.  If this class is defined, the
3891     * specified class will always be used regardless of the other fields.  You
3892     * should only set this value when you know you absolutely want a specific
3893     * class to be used; otherwise it is better to let the system find the
3894     * appropriate class so that you will respect the installed applications
3895     * and user preferences.
3896     *
3897     * @param component The name of the application component to handle the
3898     * intent, or null to let the system find one for you.
3899     *
3900     * @return Returns the same Intent object, for chaining multiple calls
3901     * into a single statement.
3902     *
3903     * @see #setClass
3904     * @see #setClassName(Context, String)
3905     * @see #setClassName(String, String)
3906     * @see #getComponent
3907     * @see #resolveActivity
3908     */
3909    public Intent setComponent(ComponentName component) {
3910        mComponent = component;
3911        return this;
3912    }
3913
3914    /**
3915     * Convenience for calling {@link #setComponent} with an
3916     * explicit class name.
3917     *
3918     * @param packageContext A Context of the application package implementing
3919     * this class.
3920     * @param className The name of a class inside of the application package
3921     * that will be used as the component for this Intent.
3922     *
3923     * @return Returns the same Intent object, for chaining multiple calls
3924     * into a single statement.
3925     *
3926     * @see #setComponent
3927     * @see #setClass
3928     */
3929    public Intent setClassName(Context packageContext, String className) {
3930        mComponent = new ComponentName(packageContext, className);
3931        return this;
3932    }
3933
3934    /**
3935     * Convenience for calling {@link #setComponent} with an
3936     * explicit application package name and class name.
3937     *
3938     * @param packageName The name of the package implementing the desired
3939     * component.
3940     * @param className The name of a class inside of the application package
3941     * that will be used as the component for this Intent.
3942     *
3943     * @return Returns the same Intent object, for chaining multiple calls
3944     * into a single statement.
3945     *
3946     * @see #setComponent
3947     * @see #setClass
3948     */
3949    public Intent setClassName(String packageName, String className) {
3950        mComponent = new ComponentName(packageName, className);
3951        return this;
3952    }
3953
3954    /**
3955     * Convenience for calling {@link #setComponent(ComponentName)} with the
3956     * name returned by a {@link Class} object.
3957     *
3958     * @param packageContext A Context of the application package implementing
3959     * this class.
3960     * @param cls The class name to set, equivalent to
3961     *            <code>setClassName(context, cls.getName())</code>.
3962     *
3963     * @return Returns the same Intent object, for chaining multiple calls
3964     * into a single statement.
3965     *
3966     * @see #setComponent
3967     */
3968    public Intent setClass(Context packageContext, Class<?> cls) {
3969        mComponent = new ComponentName(packageContext, cls);
3970        return this;
3971    }
3972
3973    /**
3974     * Use with {@link #fillIn} to allow the current action value to be
3975     * overwritten, even if it is already set.
3976     */
3977    public static final int FILL_IN_ACTION = 1<<0;
3978
3979    /**
3980     * Use with {@link #fillIn} to allow the current data or type value
3981     * overwritten, even if it is already set.
3982     */
3983    public static final int FILL_IN_DATA = 1<<1;
3984
3985    /**
3986     * Use with {@link #fillIn} to allow the current categories to be
3987     * overwritten, even if they are already set.
3988     */
3989    public static final int FILL_IN_CATEGORIES = 1<<2;
3990
3991    /**
3992     * Use with {@link #fillIn} to allow the current component value to be
3993     * overwritten, even if it is already set.
3994     */
3995    public static final int FILL_IN_COMPONENT = 1<<3;
3996
3997    /**
3998     * Copy the contents of <var>other</var> in to this object, but only
3999     * where fields are not defined by this object.  For purposes of a field
4000     * being defined, the following pieces of data in the Intent are
4001     * considered to be separate fields:
4002     *
4003     * <ul>
4004     * <li> action, as set by {@link #setAction}.
4005     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4006     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4007     * <li> categories, as set by {@link #addCategory}.
4008     * <li> component, as set by {@link #setComponent(ComponentName)} or
4009     * related methods.
4010     * <li> each top-level name in the associated extras.
4011     * </ul>
4012     *
4013     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4014     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, and
4015     * {@link #FILL_IN_COMPONENT} to override the restriction where the
4016     * corresponding field will not be replaced if it is already set.
4017     *
4018     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4019     * and Intent B with {action="gotit", data-type="some/thing",
4020     * categories="one","two"}.
4021     *
4022     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4023     * containing: {action="gotit", data-type="some/thing",
4024     * categories="bar"}.
4025     *
4026     * @param other Another Intent whose values are to be used to fill in
4027     * the current one.
4028     * @param flags Options to control which fields can be filled in.
4029     *
4030     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4031     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, and
4032     * {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4033     */
4034    public int fillIn(Intent other, int flags) {
4035        int changes = 0;
4036        if ((mAction == null && other.mAction == null)
4037                || (flags&FILL_IN_ACTION) != 0) {
4038            mAction = other.mAction;
4039            changes |= FILL_IN_ACTION;
4040        }
4041        if ((mData == null && mType == null &&
4042                (other.mData != null || other.mType != null))
4043                || (flags&FILL_IN_DATA) != 0) {
4044            mData = other.mData;
4045            mType = other.mType;
4046            changes |= FILL_IN_DATA;
4047        }
4048        if ((mCategories == null && other.mCategories == null)
4049                || (flags&FILL_IN_CATEGORIES) != 0) {
4050            if (other.mCategories != null) {
4051                mCategories = new HashSet<String>(other.mCategories);
4052            }
4053            changes |= FILL_IN_CATEGORIES;
4054        }
4055        if ((mComponent == null && other.mComponent == null)
4056                || (flags&FILL_IN_COMPONENT) != 0) {
4057            mComponent = other.mComponent;
4058            changes |= FILL_IN_COMPONENT;
4059        }
4060        mFlags |= other.mFlags;
4061        if (mExtras == null) {
4062            if (other.mExtras != null) {
4063                mExtras = new Bundle(other.mExtras);
4064            }
4065        } else if (other.mExtras != null) {
4066            try {
4067                Bundle newb = new Bundle(other.mExtras);
4068                newb.putAll(mExtras);
4069                mExtras = newb;
4070            } catch (RuntimeException e) {
4071                // Modifying the extras can cause us to unparcel the contents
4072                // of the bundle, and if we do this in the system process that
4073                // may fail.  We really should handle this (i.e., the Bundle
4074                // impl shouldn't be on top of a plain map), but for now just
4075                // ignore it and keep the original contents. :(
4076                Log.w("Intent", "Failure filling in extras", e);
4077            }
4078        }
4079        return changes;
4080    }
4081
4082    /**
4083     * Wrapper class holding an Intent and implementing comparisons on it for
4084     * the purpose of filtering.  The class implements its
4085     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4086     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4087     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4088     * on the wrapped Intent.
4089     */
4090    public static final class FilterComparison {
4091        private final Intent mIntent;
4092        private final int mHashCode;
4093
4094        public FilterComparison(Intent intent) {
4095            mIntent = intent;
4096            mHashCode = intent.filterHashCode();
4097        }
4098
4099        /**
4100         * Return the Intent that this FilterComparison represents.
4101         * @return Returns the Intent held by the FilterComparison.  Do
4102         * not modify!
4103         */
4104        public Intent getIntent() {
4105            return mIntent;
4106        }
4107
4108        @Override
4109        public boolean equals(Object obj) {
4110            Intent other;
4111            try {
4112                other = ((FilterComparison)obj).mIntent;
4113            } catch (ClassCastException e) {
4114                return false;
4115            }
4116
4117            return mIntent.filterEquals(other);
4118        }
4119
4120        @Override
4121        public int hashCode() {
4122            return mHashCode;
4123        }
4124    }
4125
4126    /**
4127     * Determine if two intents are the same for the purposes of intent
4128     * resolution (filtering). That is, if their action, data, type,
4129     * class, and categories are the same.  This does <em>not</em> compare
4130     * any extra data included in the intents.
4131     *
4132     * @param other The other Intent to compare against.
4133     *
4134     * @return Returns true if action, data, type, class, and categories
4135     *         are the same.
4136     */
4137    public boolean filterEquals(Intent other) {
4138        if (other == null) {
4139            return false;
4140        }
4141        if (mAction != other.mAction) {
4142            if (mAction != null) {
4143                if (!mAction.equals(other.mAction)) {
4144                    return false;
4145                }
4146            } else {
4147                if (!other.mAction.equals(mAction)) {
4148                    return false;
4149                }
4150            }
4151        }
4152        if (mData != other.mData) {
4153            if (mData != null) {
4154                if (!mData.equals(other.mData)) {
4155                    return false;
4156                }
4157            } else {
4158                if (!other.mData.equals(mData)) {
4159                    return false;
4160                }
4161            }
4162        }
4163        if (mType != other.mType) {
4164            if (mType != null) {
4165                if (!mType.equals(other.mType)) {
4166                    return false;
4167                }
4168            } else {
4169                if (!other.mType.equals(mType)) {
4170                    return false;
4171                }
4172            }
4173        }
4174        if (mComponent != other.mComponent) {
4175            if (mComponent != null) {
4176                if (!mComponent.equals(other.mComponent)) {
4177                    return false;
4178                }
4179            } else {
4180                if (!other.mComponent.equals(mComponent)) {
4181                    return false;
4182                }
4183            }
4184        }
4185        if (mCategories != other.mCategories) {
4186            if (mCategories != null) {
4187                if (!mCategories.equals(other.mCategories)) {
4188                    return false;
4189                }
4190            } else {
4191                if (!other.mCategories.equals(mCategories)) {
4192                    return false;
4193                }
4194            }
4195        }
4196
4197        return true;
4198    }
4199
4200    /**
4201     * Generate hash code that matches semantics of filterEquals().
4202     *
4203     * @return Returns the hash value of the action, data, type, class, and
4204     *         categories.
4205     *
4206     * @see #filterEquals
4207     */
4208    public int filterHashCode() {
4209        int code = 0;
4210        if (mAction != null) {
4211            code += mAction.hashCode();
4212        }
4213        if (mData != null) {
4214            code += mData.hashCode();
4215        }
4216        if (mType != null) {
4217            code += mType.hashCode();
4218        }
4219        if (mComponent != null) {
4220            code += mComponent.hashCode();
4221        }
4222        if (mCategories != null) {
4223            code += mCategories.hashCode();
4224        }
4225        return code;
4226    }
4227
4228    @Override
4229    public String toString() {
4230        StringBuilder   b = new StringBuilder();
4231
4232        b.append("Intent {");
4233        if (mAction != null) b.append(" action=").append(mAction);
4234        if (mCategories != null) {
4235            b.append(" categories={");
4236            Iterator<String> i = mCategories.iterator();
4237            boolean didone = false;
4238            while (i.hasNext()) {
4239                if (didone) b.append(",");
4240                didone = true;
4241                b.append(i.next());
4242            }
4243            b.append("}");
4244        }
4245        if (mData != null) b.append(" data=").append(mData);
4246        if (mType != null) b.append(" type=").append(mType);
4247        if (mFlags != 0) b.append(" flags=0x").append(Integer.toHexString(mFlags));
4248        if (mComponent != null) b.append(" comp=").append(mComponent.toShortString());
4249        if (mExtras != null) b.append(" (has extras)");
4250        b.append(" }");
4251
4252        return b.toString();
4253    }
4254
4255    public String toURI() {
4256        StringBuilder uri = new StringBuilder(mData != null ? mData.toString() : "");
4257
4258        uri.append("#Intent;");
4259
4260        if (mAction != null) {
4261            uri.append("action=").append(mAction).append(';');
4262        }
4263        if (mCategories != null) {
4264            for (String category : mCategories) {
4265                uri.append("category=").append(category).append(';');
4266            }
4267        }
4268        if (mType != null) {
4269            uri.append("type=").append(mType).append(';');
4270        }
4271        if (mFlags != 0) {
4272            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4273        }
4274        if (mComponent != null) {
4275            uri.append("component=").append(mComponent.flattenToShortString()).append(';');
4276        }
4277        if (mExtras != null) {
4278            for (String key : mExtras.keySet()) {
4279                final Object value = mExtras.get(key);
4280                char entryType =
4281                        value instanceof String    ? 'S' :
4282                        value instanceof Boolean   ? 'B' :
4283                        value instanceof Byte      ? 'b' :
4284                        value instanceof Character ? 'c' :
4285                        value instanceof Double    ? 'd' :
4286                        value instanceof Float     ? 'f' :
4287                        value instanceof Integer   ? 'i' :
4288                        value instanceof Long      ? 'l' :
4289                        value instanceof Short     ? 's' :
4290                        '\0';
4291
4292                if (entryType != '\0') {
4293                    uri.append(entryType);
4294                    uri.append('.');
4295                    uri.append(Uri.encode(key));
4296                    uri.append('=');
4297                    uri.append(Uri.encode(value.toString()));
4298                    uri.append(';');
4299                }
4300            }
4301        }
4302
4303        uri.append("end");
4304
4305        return uri.toString();
4306    }
4307
4308    public int describeContents() {
4309        return (mExtras != null) ? mExtras.describeContents() : 0;
4310    }
4311
4312    public void writeToParcel(Parcel out, int flags) {
4313        out.writeString(mAction);
4314        Uri.writeToParcel(out, mData);
4315        out.writeString(mType);
4316        out.writeInt(mFlags);
4317        ComponentName.writeToParcel(mComponent, out);
4318
4319        if (mCategories != null) {
4320            out.writeInt(mCategories.size());
4321            for (String category : mCategories) {
4322                out.writeString(category);
4323            }
4324        } else {
4325            out.writeInt(0);
4326        }
4327
4328        out.writeBundle(mExtras);
4329    }
4330
4331    public static final Parcelable.Creator<Intent> CREATOR
4332            = new Parcelable.Creator<Intent>() {
4333        public Intent createFromParcel(Parcel in) {
4334            return new Intent(in);
4335        }
4336        public Intent[] newArray(int size) {
4337            return new Intent[size];
4338        }
4339    };
4340
4341    private Intent(Parcel in) {
4342        readFromParcel(in);
4343    }
4344
4345    public void readFromParcel(Parcel in) {
4346        mAction = in.readString();
4347        mData = Uri.CREATOR.createFromParcel(in);
4348        mType = in.readString();
4349        mFlags = in.readInt();
4350        mComponent = ComponentName.readFromParcel(in);
4351
4352        int N = in.readInt();
4353        if (N > 0) {
4354            mCategories = new HashSet<String>();
4355            int i;
4356            for (i=0; i<N; i++) {
4357                mCategories.add(in.readString());
4358            }
4359        } else {
4360            mCategories = null;
4361        }
4362
4363        mExtras = in.readBundle();
4364    }
4365
4366    /**
4367     * Parses the "intent" element (and its children) from XML and instantiates
4368     * an Intent object.  The given XML parser should be located at the tag
4369     * where parsing should start (often named "intent"), from which the
4370     * basic action, data, type, and package and class name will be
4371     * retrieved.  The function will then parse in to any child elements,
4372     * looking for <category android:name="xxx"> tags to add categories and
4373     * <extra android:name="xxx" android:value="yyy"> to attach extra data
4374     * to the intent.
4375     *
4376     * @param resources The Resources to use when inflating resources.
4377     * @param parser The XML parser pointing at an "intent" tag.
4378     * @param attrs The AttributeSet interface for retrieving extended
4379     * attribute data at the current <var>parser</var> location.
4380     * @return An Intent object matching the XML data.
4381     * @throws XmlPullParserException If there was an XML parsing error.
4382     * @throws IOException If there was an I/O error.
4383     */
4384    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
4385            throws XmlPullParserException, IOException {
4386        Intent intent = new Intent();
4387
4388        TypedArray sa = resources.obtainAttributes(attrs,
4389                com.android.internal.R.styleable.Intent);
4390
4391        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
4392
4393        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
4394        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
4395        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
4396
4397        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
4398        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
4399        if (packageName != null && className != null) {
4400            intent.setComponent(new ComponentName(packageName, className));
4401        }
4402
4403        sa.recycle();
4404
4405        int outerDepth = parser.getDepth();
4406        int type;
4407        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
4408               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
4409            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
4410                continue;
4411            }
4412
4413            String nodeName = parser.getName();
4414            if (nodeName.equals("category")) {
4415                sa = resources.obtainAttributes(attrs,
4416                        com.android.internal.R.styleable.IntentCategory);
4417                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
4418                sa.recycle();
4419
4420                if (cat != null) {
4421                    intent.addCategory(cat);
4422                }
4423                XmlUtils.skipCurrentTag(parser);
4424
4425            } else if (nodeName.equals("extra")) {
4426                if (intent.mExtras == null) {
4427                    intent.mExtras = new Bundle();
4428                }
4429                resources.parseBundleExtra("extra", attrs, intent.mExtras);
4430                XmlUtils.skipCurrentTag(parser);
4431
4432            } else {
4433                XmlUtils.skipCurrentTag(parser);
4434            }
4435        }
4436
4437        return intent;
4438    }
4439}
4440