Intent.java revision bd3e0ce5a288d75e5e420f52da31c34be59063f4
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/people/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/people/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/people/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/people/</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.intent.action.VIEW".</p>
160 *
161 * <p>Put together, the set of actions, data types, categories, and extra data
162 * defines a language for the system allowing for the expression of phrases
163 * such as "call john smith's cell".  As applications are added to the system,
164 * they can extend this language by adding new actions, types, and categories, or
165 * they can modify the behavior of existing phrases by supplying their own
166 * activities that handle them.</p>
167 *
168 * <a name="IntentResolution"></a>
169 * <h3>Intent Resolution</h3>
170 *
171 * <p>There are two primary forms of intents you will use.
172 *
173 * <ul>
174 *     <li> <p><b>Explicit Intents</b> have specified a component (via
175 *     {@link #setComponent} or {@link #setClass}), which provides the exact
176 *     class to be run.  Often these will not include any other information,
177 *     simply being a way for an application to launch various internal
178 *     activities it has as the user interacts with the application.
179 *
180 *     <li> <p><b>Implicit Intents</b> have not specified a component;
181 *     instead, they must include enough information for the system to
182 *     determine which of the available components is best to run for that
183 *     intent.
184 * </ul>
185 *
186 * <p>When using implicit intents, given such an arbitrary intent we need to
187 * know what to do with it. This is handled by the process of <em>Intent
188 * resolution</em>, which maps an Intent to an {@link android.app.Activity},
189 * {@link BroadcastReceiver}, or {@link android.app.Service} (or sometimes two or
190 * more activities/receivers) that can handle it.</p>
191 *
192 * <p>The intent resolution mechanism basically revolves around matching an
193 * Intent against all of the &lt;intent-filter&gt; descriptions in the
194 * installed application packages.  (Plus, in the case of broadcasts, any {@link BroadcastReceiver}
195 * objects explicitly registered with {@link Context#registerReceiver}.)  More
196 * details on this can be found in the documentation on the {@link
197 * IntentFilter} class.</p>
198 *
199 * <p>There are three pieces of information in the Intent that are used for
200 * resolution: the action, type, and category.  Using this information, a query
201 * is done on the {@link PackageManager} for a component that can handle the
202 * intent. The appropriate component is determined based on the intent
203 * information supplied in the <code>AndroidManifest.xml</code> file as
204 * follows:</p>
205 *
206 * <ul>
207 *     <li> <p>The <b>action</b>, if given, must be listed by the component as
208 *         one it handles.</p>
209 *     <li> <p>The <b>type</b> is retrieved from the Intent's data, if not
210 *         already supplied in the Intent.  Like the action, if a type is
211 *         included in the intent (either explicitly or implicitly in its
212 *         data), then this must be listed by the component as one it handles.</p>
213 *     <li> For data that is not a <code>content:</code> URI and where no explicit
214 *         type is included in the Intent, instead the <b>scheme</b> of the
215 *         intent data (such as <code>http:</code> or <code>mailto:</code>) is
216 *         considered. Again like the action, if we are matching a scheme it
217 *         must be listed by the component as one it can handle.
218 *     <li> <p>The <b>categories</b>, if supplied, must <em>all</em> be listed
219 *         by the activity as categories it handles.  That is, if you include
220 *         the categories {@link #CATEGORY_LAUNCHER} and
221 *         {@link #CATEGORY_ALTERNATIVE}, then you will only resolve to components
222 *         with an intent that lists <em>both</em> of those categories.
223 *         Activities will very often need to support the
224 *         {@link #CATEGORY_DEFAULT} so that they can be found by
225 *         {@link Context#startActivity Context.startActivity()}.</p>
226 * </ul>
227 *
228 * <p>For example, consider the Note Pad sample application that
229 * allows user to browse through a list of notes data and view details about
230 * individual items.  Text in italics indicate places were you would replace a
231 * name with one specific to your own package.</p>
232 *
233 * <pre> &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
234 *       package="<i>com.android.notepad</i>"&gt;
235 *     &lt;application android:icon="@drawable/app_notes"
236 *             android:label="@string/app_name"&gt;
237 *
238 *         &lt;provider class=".NotePadProvider"
239 *                 android:authorities="<i>com.google.provider.NotePad</i>" /&gt;
240 *
241 *         &lt;activity class=".NotesList" android:label="@string/title_notes_list"&gt;
242 *             &lt;intent-filter&gt;
243 *                 &lt;action android:name="android.intent.action.MAIN" /&gt;
244 *                 &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
245 *             &lt;/intent-filter&gt;
246 *             &lt;intent-filter&gt;
247 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
248 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
249 *                 &lt;action android:name="android.intent.action.PICK" /&gt;
250 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
251 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
252 *             &lt;/intent-filter&gt;
253 *             &lt;intent-filter&gt;
254 *                 &lt;action android:name="android.intent.action.GET_CONTENT" /&gt;
255 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
256 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
257 *             &lt;/intent-filter&gt;
258 *         &lt;/activity&gt;
259 *
260 *         &lt;activity class=".NoteEditor" android:label="@string/title_note"&gt;
261 *             &lt;intent-filter android:label="@string/resolve_edit"&gt;
262 *                 &lt;action android:name="android.intent.action.VIEW" /&gt;
263 *                 &lt;action android:name="android.intent.action.EDIT" /&gt;
264 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
265 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
266 *             &lt;/intent-filter&gt;
267 *
268 *             &lt;intent-filter&gt;
269 *                 &lt;action android:name="android.intent.action.INSERT" /&gt;
270 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
271 *                 &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
272 *             &lt;/intent-filter&gt;
273 *
274 *         &lt;/activity&gt;
275 *
276 *         &lt;activity class=".TitleEditor" android:label="@string/title_edit_title"
277 *                 android:theme="@android:style/Theme.Dialog"&gt;
278 *             &lt;intent-filter android:label="@string/resolve_title"&gt;
279 *                 &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
280 *                 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
281 *                 &lt;category android:name="android.intent.category.ALTERNATIVE" /&gt;
282 *                 &lt;category android:name="android.intent.category.SELECTED_ALTERNATIVE" /&gt;
283 *                 &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
284 *             &lt;/intent-filter&gt;
285 *         &lt;/activity&gt;
286 *
287 *     &lt;/application&gt;
288 * &lt;/manifest&gt;</pre>
289 *
290 * <p>The first activity,
291 * <code>com.android.notepad.NotesList</code>, serves as our main
292 * entry into the app.  It can do three things as described by its three intent
293 * templates:
294 * <ol>
295 * <li><pre>
296 * &lt;intent-filter&gt;
297 *     &lt;action android:name="{@link #ACTION_MAIN android.intent.action.MAIN}" /&gt;
298 *     &lt;category android:name="{@link #CATEGORY_LAUNCHER android.intent.category.LAUNCHER}" /&gt;
299 * &lt;/intent-filter&gt;</pre>
300 * <p>This provides a top-level entry into the NotePad application: the standard
301 * MAIN action is a main entry point (not requiring any other information in
302 * the Intent), and the LAUNCHER category says that this entry point should be
303 * listed in the application launcher.</p>
304 * <li><pre>
305 * &lt;intent-filter&gt;
306 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
307 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
308 *     &lt;action android:name="{@link #ACTION_PICK android.intent.action.PICK}" /&gt;
309 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
310 *     &lt;data mimeType:name="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
311 * &lt;/intent-filter&gt;</pre>
312 * <p>This declares the things that the activity can do on a directory of
313 * notes.  The type being supported is given with the &lt;type&gt; tag, where
314 * <code>vnd.android.cursor.dir/vnd.google.note</code> is a URI from which
315 * a Cursor of zero or more items (<code>vnd.android.cursor.dir</code>) can
316 * be retrieved which holds our note pad data (<code>vnd.google.note</code>).
317 * The activity allows the user to view or edit the directory of data (via
318 * the VIEW and EDIT actions), or to pick a particular note and return it
319 * to the caller (via the PICK action).  Note also the DEFAULT category
320 * supplied here: this is <em>required</em> for the
321 * {@link Context#startActivity Context.startActivity} method to resolve your
322 * activity when its component name is not explicitly specified.</p>
323 * <li><pre>
324 * &lt;intent-filter&gt;
325 *     &lt;action android:name="{@link #ACTION_GET_CONTENT android.intent.action.GET_CONTENT}" /&gt;
326 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
327 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
328 * &lt;/intent-filter&gt;</pre>
329 * <p>This filter describes the ability return to the caller a note selected by
330 * the user without needing to know where it came from.  The data type
331 * <code>vnd.android.cursor.item/vnd.google.note</code> is a URI from which
332 * a Cursor of exactly one (<code>vnd.android.cursor.item</code>) item can
333 * be retrieved which contains our note pad data (<code>vnd.google.note</code>).
334 * The GET_CONTENT action is similar to the PICK action, where the activity
335 * will return to its caller a piece of data selected by the user.  Here,
336 * however, the caller specifies the type of data they desire instead of
337 * the type of data the user will be picking from.</p>
338 * </ol>
339 *
340 * <p>Given these capabilities, the following intents will resolve to the
341 * NotesList activity:</p>
342 *
343 * <ul>
344 *     <li> <p><b>{ action=android.app.action.MAIN }</b> matches all of the
345 *         activities that can be used as top-level entry points into an
346 *         application.</p>
347 *     <li> <p><b>{ action=android.app.action.MAIN,
348 *         category=android.app.category.LAUNCHER }</b> is the actual intent
349 *         used by the Launcher to populate its top-level list.</p>
350 *     <li> <p><b>{ action=android.intent.action.VIEW
351 *          data=content://com.google.provider.NotePad/notes }</b>
352 *         displays a list of all the notes under
353 *         "content://com.google.provider.NotePad/notes", which
354 *         the user can browse through and see the details on.</p>
355 *     <li> <p><b>{ action=android.app.action.PICK
356 *          data=content://com.google.provider.NotePad/notes }</b>
357 *         provides a list of the notes under
358 *         "content://com.google.provider.NotePad/notes", from which
359 *         the user can pick a note whose data URL is returned back to the caller.</p>
360 *     <li> <p><b>{ action=android.app.action.GET_CONTENT
361 *          type=vnd.android.cursor.item/vnd.google.note }</b>
362 *         is similar to the pick action, but allows the caller to specify the
363 *         kind of data they want back so that the system can find the appropriate
364 *         activity to pick something of that data type.</p>
365 * </ul>
366 *
367 * <p>The second activity,
368 * <code>com.android.notepad.NoteEditor</code>, shows the user a single
369 * note entry and allows them to edit it.  It can do two things as described
370 * by its two intent templates:
371 * <ol>
372 * <li><pre>
373 * &lt;intent-filter android:label="@string/resolve_edit"&gt;
374 *     &lt;action android:name="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
375 *     &lt;action android:name="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
376 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
377 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
378 * &lt;/intent-filter&gt;</pre>
379 * <p>The first, primary, purpose of this activity is to let the user interact
380 * with a single note, as decribed by the MIME type
381 * <code>vnd.android.cursor.item/vnd.google.note</code>.  The activity can
382 * either VIEW a note or allow the user to EDIT it.  Again we support the
383 * DEFAULT category to allow the activity to be launched without explicitly
384 * specifying its component.</p>
385 * <li><pre>
386 * &lt;intent-filter&gt;
387 *     &lt;action android:name="{@link #ACTION_INSERT android.intent.action.INSERT}" /&gt;
388 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
389 *     &lt;data android:mimeType="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
390 * &lt;/intent-filter&gt;</pre>
391 * <p>The secondary use of this activity is to insert a new note entry into
392 * an existing directory of notes.  This is used when the user creates a new
393 * note: the INSERT action is executed on the directory of notes, causing
394 * this activity to run and have the user create the new note data which
395 * it then adds to the content provider.</p>
396 * </ol>
397 *
398 * <p>Given these capabilities, the following intents will resolve to the
399 * NoteEditor activity:</p>
400 *
401 * <ul>
402 *     <li> <p><b>{ action=android.intent.action.VIEW
403 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
404 *         shows the user the content of note <var>{ID}</var>.</p>
405 *     <li> <p><b>{ action=android.app.action.EDIT
406 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
407 *         allows the user to edit the content of note <var>{ID}</var>.</p>
408 *     <li> <p><b>{ action=android.app.action.INSERT
409 *          data=content://com.google.provider.NotePad/notes }</b>
410 *         creates a new, empty note in the notes list at
411 *         "content://com.google.provider.NotePad/notes"
412 *         and allows the user to edit it.  If they keep their changes, the URI
413 *         of the newly created note is returned to the caller.</p>
414 * </ul>
415 *
416 * <p>The last activity,
417 * <code>com.android.notepad.TitleEditor</code>, allows the user to
418 * edit the title of a note.  This could be implemented as a class that the
419 * application directly invokes (by explicitly setting its component in
420 * the Intent), but here we show a way you can publish alternative
421 * operations on existing data:</p>
422 *
423 * <pre>
424 * &lt;intent-filter android:label="@string/resolve_title"&gt;
425 *     &lt;action android:name="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
426 *     &lt;category android:name="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
427 *     &lt;category android:name="{@link #CATEGORY_ALTERNATIVE android.intent.category.ALTERNATIVE}" /&gt;
428 *     &lt;category android:name="{@link #CATEGORY_SELECTED_ALTERNATIVE android.intent.category.SELECTED_ALTERNATIVE}" /&gt;
429 *     &lt;data android:mimeType="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
430 * &lt;/intent-filter&gt;</pre>
431 *
432 * <p>In the single intent template here, we
433 * have created our own private action called
434 * <code>com.android.notepad.action.EDIT_TITLE</code> which means to
435 * edit the title of a note.  It must be invoked on a specific note
436 * (data type <code>vnd.android.cursor.item/vnd.google.note</code>) like the previous
437 * view and edit actions, but here displays and edits the title contained
438 * in the note data.
439 *
440 * <p>In addition to supporting the default category as usual, our title editor
441 * also supports two other standard categories: ALTERNATIVE and
442 * SELECTED_ALTERNATIVE.  Implementing
443 * these categories allows others to find the special action it provides
444 * without directly knowing about it, through the
445 * {@link android.content.pm.PackageManager#queryIntentActivityOptions} method, or
446 * more often to build dynamic menu items with
447 * {@link android.view.Menu#addIntentOptions}.  Note that in the intent
448 * template here was also supply an explicit name for the template
449 * (via <code>android:label="@string/resolve_title"</code>) to better control
450 * what the user sees when presented with this activity as an alternative
451 * action to the data they are viewing.
452 *
453 * <p>Given these capabilities, the following intent will resolve to the
454 * TitleEditor activity:</p>
455 *
456 * <ul>
457 *     <li> <p><b>{ action=com.android.notepad.action.EDIT_TITLE
458 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
459 *         displays and allows the user to edit the title associated
460 *         with note <var>{ID}</var>.</p>
461 * </ul>
462 *
463 * <h3>Standard Activity Actions</h3>
464 *
465 * <p>These are the current standard actions that Intent defines for launching
466 * activities (usually through {@link Context#startActivity}.  The most
467 * important, and by far most frequently used, are {@link #ACTION_MAIN} and
468 * {@link #ACTION_EDIT}.
469 *
470 * <ul>
471 *     <li> {@link #ACTION_MAIN}
472 *     <li> {@link #ACTION_VIEW}
473 *     <li> {@link #ACTION_ATTACH_DATA}
474 *     <li> {@link #ACTION_EDIT}
475 *     <li> {@link #ACTION_PICK}
476 *     <li> {@link #ACTION_CHOOSER}
477 *     <li> {@link #ACTION_GET_CONTENT}
478 *     <li> {@link #ACTION_DIAL}
479 *     <li> {@link #ACTION_CALL}
480 *     <li> {@link #ACTION_SEND}
481 *     <li> {@link #ACTION_SENDTO}
482 *     <li> {@link #ACTION_ANSWER}
483 *     <li> {@link #ACTION_INSERT}
484 *     <li> {@link #ACTION_DELETE}
485 *     <li> {@link #ACTION_RUN}
486 *     <li> {@link #ACTION_SYNC}
487 *     <li> {@link #ACTION_PICK_ACTIVITY}
488 *     <li> {@link #ACTION_SEARCH}
489 *     <li> {@link #ACTION_WEB_SEARCH}
490 *     <li> {@link #ACTION_FACTORY_TEST}
491 * </ul>
492 *
493 * <h3>Standard Broadcast Actions</h3>
494 *
495 * <p>These are the current standard actions that Intent defines for receiving
496 * broadcasts (usually through {@link Context#registerReceiver} or a
497 * &lt;receiver&gt; tag in a manifest).
498 *
499 * <ul>
500 *     <li> {@link #ACTION_TIME_TICK}
501 *     <li> {@link #ACTION_TIME_CHANGED}
502 *     <li> {@link #ACTION_TIMEZONE_CHANGED}
503 *     <li> {@link #ACTION_BOOT_COMPLETED}
504 *     <li> {@link #ACTION_PACKAGE_ADDED}
505 *     <li> {@link #ACTION_PACKAGE_CHANGED}
506 *     <li> {@link #ACTION_PACKAGE_REMOVED}
507 *     <li> {@link #ACTION_PACKAGE_RESTARTED}
508 *     <li> {@link #ACTION_PACKAGE_DATA_CLEARED}
509 *     <li> {@link #ACTION_UID_REMOVED}
510 *     <li> {@link #ACTION_BATTERY_CHANGED}
511 *     <li> {@link #ACTION_POWER_CONNECTED}
512 *     <li> {@link #ACTION_POWER_DISCONNECTED}
513 *     <li> {@link #ACTION_SHUTDOWN}
514 * </ul>
515 *
516 * <h3>Standard Categories</h3>
517 *
518 * <p>These are the current standard categories that can be used to further
519 * clarify an Intent via {@link #addCategory}.
520 *
521 * <ul>
522 *     <li> {@link #CATEGORY_DEFAULT}
523 *     <li> {@link #CATEGORY_BROWSABLE}
524 *     <li> {@link #CATEGORY_TAB}
525 *     <li> {@link #CATEGORY_ALTERNATIVE}
526 *     <li> {@link #CATEGORY_SELECTED_ALTERNATIVE}
527 *     <li> {@link #CATEGORY_LAUNCHER}
528 *     <li> {@link #CATEGORY_INFO}
529 *     <li> {@link #CATEGORY_HOME}
530 *     <li> {@link #CATEGORY_PREFERENCE}
531 *     <li> {@link #CATEGORY_TEST}
532 * </ul>
533 *
534 * <h3>Standard Extra Data</h3>
535 *
536 * <p>These are the current standard fields that can be used as extra data via
537 * {@link #putExtra}.
538 *
539 * <ul>
540 *     <li> {@link #EXTRA_TEMPLATE}
541 *     <li> {@link #EXTRA_INTENT}
542 *     <li> {@link #EXTRA_STREAM}
543 *     <li> {@link #EXTRA_TEXT}
544 * </ul>
545 *
546 * <h3>Flags</h3>
547 *
548 * <p>These are the possible flags that can be used in the Intent via
549 * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
550 * of all possible flags.
551 */
552public class Intent implements Parcelable {
553    // ---------------------------------------------------------------------
554    // ---------------------------------------------------------------------
555    // Standard intent activity actions (see action variable).
556
557    /**
558     *  Activity Action: Start as a main entry point, does not expect to
559     *  receive data.
560     *  <p>Input: nothing
561     *  <p>Output: nothing
562     */
563    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
564    public static final String ACTION_MAIN = "android.intent.action.MAIN";
565
566    /**
567     * Activity Action: Display the data to the user.  This is the most common
568     * action performed on data -- it is the generic action you can use on
569     * a piece of data to get the most reasonable thing to occur.  For example,
570     * when used on a contacts entry it will view the entry; when used on a
571     * mailto: URI it will bring up a compose window filled with the information
572     * supplied by the URI; when used with a tel: URI it will invoke the
573     * dialer.
574     * <p>Input: {@link #getData} is URI from which to retrieve data.
575     * <p>Output: nothing.
576     */
577    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
578    public static final String ACTION_VIEW = "android.intent.action.VIEW";
579
580    /**
581     * A synonym for {@link #ACTION_VIEW}, the "standard" action that is
582     * performed on a piece of data.
583     */
584    public static final String ACTION_DEFAULT = ACTION_VIEW;
585
586    /**
587     * Used to indicate that some piece of data should be attached to some other
588     * place.  For example, image data could be attached to a contact.  It is up
589     * to the recipient to decide where the data should be attached; the intent
590     * does not specify the ultimate destination.
591     * <p>Input: {@link #getData} is URI of data to be attached.
592     * <p>Output: nothing.
593     */
594    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
595    public static final String ACTION_ATTACH_DATA = "android.intent.action.ATTACH_DATA";
596
597    /**
598     * Activity Action: Provide explicit editable access to the given data.
599     * <p>Input: {@link #getData} is URI of data to be edited.
600     * <p>Output: nothing.
601     */
602    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
603    public static final String ACTION_EDIT = "android.intent.action.EDIT";
604
605    /**
606     * Activity Action: Pick an existing item, or insert a new item, and then edit it.
607     * <p>Input: {@link #getType} is the desired MIME type of the item to create or edit.
608     * The extras can contain type specific data to pass through to the editing/creating
609     * activity.
610     * <p>Output: The URI of the item that was picked.  This must be a content:
611     * URI so that any receiver can access it.
612     */
613    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
614    public static final String ACTION_INSERT_OR_EDIT = "android.intent.action.INSERT_OR_EDIT";
615
616    /**
617     * Activity Action: Pick an item from the data, returning what was selected.
618     * <p>Input: {@link #getData} is URI containing a directory of data
619     * (vnd.android.cursor.dir/*) from which to pick an item.
620     * <p>Output: The URI of the item that was picked.
621     */
622    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
623    public static final String ACTION_PICK = "android.intent.action.PICK";
624
625    /**
626     * Activity Action: Creates a shortcut.
627     * <p>Input: Nothing.</p>
628     * <p>Output: An Intent representing the shortcut. The intent must contain three
629     * extras: SHORTCUT_INTENT (value: Intent), SHORTCUT_NAME (value: String),
630     * and SHORTCUT_ICON (value: Bitmap) or SHORTCUT_ICON_RESOURCE
631     * (value: ShortcutIconResource).</p>
632     *
633     * @see #EXTRA_SHORTCUT_INTENT
634     * @see #EXTRA_SHORTCUT_NAME
635     * @see #EXTRA_SHORTCUT_ICON
636     * @see #EXTRA_SHORTCUT_ICON_RESOURCE
637     * @see android.content.Intent.ShortcutIconResource
638     */
639    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
640    public static final String ACTION_CREATE_SHORTCUT = "android.intent.action.CREATE_SHORTCUT";
641
642    /**
643     * The name of the extra used to define the Intent of a shortcut.
644     *
645     * @see #ACTION_CREATE_SHORTCUT
646     */
647    public static final String EXTRA_SHORTCUT_INTENT = "android.intent.extra.shortcut.INTENT";
648    /**
649     * The name of the extra used to define the name of a shortcut.
650     *
651     * @see #ACTION_CREATE_SHORTCUT
652     */
653    public static final String EXTRA_SHORTCUT_NAME = "android.intent.extra.shortcut.NAME";
654    /**
655     * The name of the extra used to define the icon, as a Bitmap, of a shortcut.
656     *
657     * @see #ACTION_CREATE_SHORTCUT
658     */
659    public static final String EXTRA_SHORTCUT_ICON = "android.intent.extra.shortcut.ICON";
660    /**
661     * The name of the extra used to define the icon, as a ShortcutIconResource, of a shortcut.
662     *
663     * @see #ACTION_CREATE_SHORTCUT
664     * @see android.content.Intent.ShortcutIconResource
665     */
666    public static final String EXTRA_SHORTCUT_ICON_RESOURCE =
667            "android.intent.extra.shortcut.ICON_RESOURCE";
668
669    /**
670     * Represents a shortcut/live folder icon resource.
671     *
672     * @see Intent#ACTION_CREATE_SHORTCUT
673     * @see Intent#EXTRA_SHORTCUT_ICON_RESOURCE
674     * @see android.provider.LiveFolders#ACTION_CREATE_LIVE_FOLDER
675     * @see android.provider.LiveFolders#EXTRA_LIVE_FOLDER_ICON
676     */
677    public static class ShortcutIconResource implements Parcelable {
678        /**
679         * The package name of the application containing the icon.
680         */
681        public String packageName;
682
683        /**
684         * The resource name of the icon, including package, name and type.
685         */
686        public String resourceName;
687
688        /**
689         * Creates a new ShortcutIconResource for the specified context and resource
690         * identifier.
691         *
692         * @param context The context of the application.
693         * @param resourceId The resource idenfitier for the icon.
694         * @return A new ShortcutIconResource with the specified's context package name
695         *         and icon resource idenfitier.
696         */
697        public static ShortcutIconResource fromContext(Context context, int resourceId) {
698            ShortcutIconResource icon = new ShortcutIconResource();
699            icon.packageName = context.getPackageName();
700            icon.resourceName = context.getResources().getResourceName(resourceId);
701            return icon;
702        }
703
704        /**
705         * Used to read a ShortcutIconResource from a Parcel.
706         */
707        public static final Parcelable.Creator<ShortcutIconResource> CREATOR =
708            new Parcelable.Creator<ShortcutIconResource>() {
709
710                public ShortcutIconResource createFromParcel(Parcel source) {
711                    ShortcutIconResource icon = new ShortcutIconResource();
712                    icon.packageName = source.readString();
713                    icon.resourceName = source.readString();
714                    return icon;
715                }
716
717                public ShortcutIconResource[] newArray(int size) {
718                    return new ShortcutIconResource[size];
719                }
720            };
721
722        /**
723         * No special parcel contents.
724         */
725        public int describeContents() {
726            return 0;
727        }
728
729        public void writeToParcel(Parcel dest, int flags) {
730            dest.writeString(packageName);
731            dest.writeString(resourceName);
732        }
733
734        @Override
735        public String toString() {
736            return resourceName;
737        }
738    }
739
740    /**
741     * Activity Action: Display an activity chooser, allowing the user to pick
742     * what they want to before proceeding.  This can be used as an alternative
743     * to the standard activity picker that is displayed by the system when
744     * you try to start an activity with multiple possible matches, with these
745     * differences in behavior:
746     * <ul>
747     * <li>You can specify the title that will appear in the activity chooser.
748     * <li>The user does not have the option to make one of the matching
749     * activities a preferred activity, and all possible activities will
750     * always be shown even if one of them is currently marked as the
751     * preferred activity.
752     * </ul>
753     * <p>
754     * This action should be used when the user will naturally expect to
755     * select an activity in order to proceed.  An example if when not to use
756     * it is when the user clicks on a "mailto:" link.  They would naturally
757     * expect to go directly to their mail app, so startActivity() should be
758     * called directly: it will
759     * either launch the current preferred app, or put up a dialog allowing the
760     * user to pick an app to use and optionally marking that as preferred.
761     * <p>
762     * In contrast, if the user is selecting a menu item to send a picture
763     * they are viewing to someone else, there are many different things they
764     * may want to do at this point: send it through e-mail, upload it to a
765     * web service, etc.  In this case the CHOOSER action should be used, to
766     * always present to the user a list of the things they can do, with a
767     * nice title given by the caller such as "Send this photo with:".
768     * <p>
769     * As a convenience, an Intent of this form can be created with the
770     * {@link #createChooser} function.
771     * <p>Input: No data should be specified.  get*Extra must have
772     * a {@link #EXTRA_INTENT} field containing the Intent being executed,
773     * and can optionally have a {@link #EXTRA_TITLE} field containing the
774     * title text to display in the chooser.
775     * <p>Output: Depends on the protocol of {@link #EXTRA_INTENT}.
776     */
777    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
778    public static final String ACTION_CHOOSER = "android.intent.action.CHOOSER";
779
780    /**
781     * Convenience function for creating a {@link #ACTION_CHOOSER} Intent.
782     *
783     * @param target The Intent that the user will be selecting an activity
784     * to perform.
785     * @param title Optional title that will be displayed in the chooser.
786     * @return Return a new Intent object that you can hand to
787     * {@link Context#startActivity(Intent) Context.startActivity()} and
788     * related methods.
789     */
790    public static Intent createChooser(Intent target, CharSequence title) {
791        Intent intent = new Intent(ACTION_CHOOSER);
792        intent.putExtra(EXTRA_INTENT, target);
793        if (title != null) {
794            intent.putExtra(EXTRA_TITLE, title);
795        }
796        return intent;
797    }
798    /**
799     * Activity Action: Allow the user to select a particular kind of data and
800     * return it.  This is different than {@link #ACTION_PICK} in that here we
801     * just say what kind of data is desired, not a URI of existing data from
802     * which the user can pick.  A ACTION_GET_CONTENT could allow the user to
803     * create the data as it runs (for example taking a picture or recording a
804     * sound), let them browser over the web and download the desired data,
805     * etc.
806     * <p>
807     * There are two main ways to use this action: if you want an specific kind
808     * of data, such as a person contact, you set the MIME type to the kind of
809     * data you want and launch it with {@link Context#startActivity(Intent)}.
810     * The system will then launch the best application to select that kind
811     * of data for you.
812     * <p>
813     * You may also be interested in any of a set of types of content the user
814     * can pick.  For example, an e-mail application that wants to allow the
815     * user to add an attachment to an e-mail message can use this action to
816     * bring up a list of all of the types of content the user can attach.
817     * <p>
818     * In this case, you should wrap the GET_CONTENT intent with a chooser
819     * (through {@link #createChooser}), which will give the proper interface
820     * for the user to pick how to send your data and allow you to specify
821     * a prompt indicating what they are doing.  You will usually specify a
822     * broad MIME type (such as image/* or {@literal *}/*), resulting in a
823     * broad range of content types the user can select from.
824     * <p>
825     * When using such a broad GET_CONTENT action, it is often desireable to
826     * only pick from data that can be represented as a stream.  This is
827     * accomplished by requiring the {@link #CATEGORY_OPENABLE} in the Intent.
828     * <p>
829     * Input: {@link #getType} is the desired MIME type to retrieve.  Note
830     * that no URI is supplied in the intent, as there are no constraints on
831     * where the returned data originally comes from.  You may also include the
832     * {@link #CATEGORY_OPENABLE} if you can only accept data that can be
833     * opened as a stream.
834     * <p>
835     * Output: The URI of the item that was picked.  This must be a content:
836     * URI so that any receiver can access it.
837     */
838    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
839    public static final String ACTION_GET_CONTENT = "android.intent.action.GET_CONTENT";
840    /**
841     * Activity Action: Dial a number as specified by the data.  This shows a
842     * UI with the number being dialed, allowing the user to explicitly
843     * initiate the call.
844     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
845     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
846     * number.
847     * <p>Output: nothing.
848     */
849    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
850    public static final String ACTION_DIAL = "android.intent.action.DIAL";
851    /**
852     * Activity Action: Perform a call to someone specified by the data.
853     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
854     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
855     * number.
856     * <p>Output: nothing.
857     *
858     * <p>Note: there will be restrictions on which applications can initiate a
859     * call; most applications should use the {@link #ACTION_DIAL}.
860     * <p>Note: this Intent <strong>cannot</strong> be used to call emergency
861     * numbers.  Applications can <strong>dial</strong> emergency numbers using
862     * {@link #ACTION_DIAL}, however.
863     */
864    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
865    public static final String ACTION_CALL = "android.intent.action.CALL";
866    /**
867     * Activity Action: Perform a call to an emergency number specified by the
868     * data.
869     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
870     * tel: URI of an explicit phone number.
871     * <p>Output: nothing.
872     * @hide
873     */
874    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY";
875    /**
876     * Activity action: Perform a call to any number (emergency or not)
877     * specified by the data.
878     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
879     * tel: URI of an explicit phone number.
880     * <p>Output: nothing.
881     * @hide
882     */
883    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";
884    /**
885     * Activity Action: Send a message to someone specified by the data.
886     * <p>Input: {@link #getData} is URI describing the target.
887     * <p>Output: nothing.
888     */
889    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
890    public static final String ACTION_SENDTO = "android.intent.action.SENDTO";
891    /**
892     * Activity Action: Deliver some data to someone else.  Who the data is
893     * being delivered to is not specified; it is up to the receiver of this
894     * action to ask the user where the data should be sent.
895     * <p>
896     * When launching a SEND intent, you should usually wrap it in a chooser
897     * (through {@link #createChooser}), which will give the proper interface
898     * for the user to pick how to send your data and allow you to specify
899     * a prompt indicating what they are doing.
900     * <p>
901     * Input: {@link #getType} is the MIME type of the data being sent.
902     * get*Extra can have either a {@link #EXTRA_TEXT}
903     * or {@link #EXTRA_STREAM} field, containing the data to be sent.  If
904     * using EXTRA_TEXT, the MIME type should be "text/plain"; otherwise it
905     * should be the MIME type of the data in EXTRA_STREAM.  Use {@literal *}/*
906     * if the MIME type is unknown (this will only allow senders that can
907     * handle generic data streams).
908     * <p>
909     * Optional standard extras, which may be interpreted by some recipients as
910     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
911     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
912     * <p>
913     * Output: nothing.
914     */
915    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
916    public static final String ACTION_SEND = "android.intent.action.SEND";
917    /**
918     * Activity Action: Deliver multiple data to someone else.
919     * <p>
920     * Like ACTION_SEND, except the data is multiple.
921     * <p>
922     * Input: {@link #getType} is the MIME type of the data being sent.
923     * get*ArrayListExtra can have either a {@link #EXTRA_TEXT} or {@link
924     * #EXTRA_STREAM} field, containing the data to be sent.
925     * <p>
926     * Optional standard extras, which may be interpreted by some recipients as
927     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
928     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
929     * <p>
930     * Output: nothing.
931     */
932    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
933    public static final String ACTION_SEND_MULTIPLE = "android.intent.action.SEND_MULTIPLE";
934    /**
935     * Activity Action: Handle an incoming phone call.
936     * <p>Input: nothing.
937     * <p>Output: nothing.
938     */
939    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
940    public static final String ACTION_ANSWER = "android.intent.action.ANSWER";
941    /**
942     * Activity Action: Insert an empty item into the given container.
943     * <p>Input: {@link #getData} is URI of the directory (vnd.android.cursor.dir/*)
944     * in which to place the data.
945     * <p>Output: URI of the new data that was created.
946     */
947    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
948    public static final String ACTION_INSERT = "android.intent.action.INSERT";
949    /**
950     * Activity Action: Delete the given data from its container.
951     * <p>Input: {@link #getData} is URI of data to be deleted.
952     * <p>Output: nothing.
953     */
954    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
955    public static final String ACTION_DELETE = "android.intent.action.DELETE";
956    /**
957     * Activity Action: Run the data, whatever that means.
958     * <p>Input: ?  (Note: this is currently specific to the test harness.)
959     * <p>Output: nothing.
960     */
961    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
962    public static final String ACTION_RUN = "android.intent.action.RUN";
963    /**
964     * Activity Action: Perform a data synchronization.
965     * <p>Input: ?
966     * <p>Output: ?
967     */
968    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
969    public static final String ACTION_SYNC = "android.intent.action.SYNC";
970    /**
971     * Activity Action: Pick an activity given an intent, returning the class
972     * selected.
973     * <p>Input: get*Extra field {@link #EXTRA_INTENT} is an Intent
974     * used with {@link PackageManager#queryIntentActivities} to determine the
975     * set of activities from which to pick.
976     * <p>Output: Class name of the activity that was selected.
977     */
978    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
979    public static final String ACTION_PICK_ACTIVITY = "android.intent.action.PICK_ACTIVITY";
980    /**
981     * Activity Action: Perform a search.
982     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
983     * is the text to search for.  If empty, simply
984     * enter your search results Activity with the search UI activated.
985     * <p>Output: nothing.
986     */
987    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
988    public static final String ACTION_SEARCH = "android.intent.action.SEARCH";
989    /**
990     * Activity Action: Start the platform-defined tutorial
991     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
992     * is the text to search for.  If empty, simply
993     * enter your search results Activity with the search UI activated.
994     * <p>Output: nothing.
995     */
996    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
997    public static final String ACTION_SYSTEM_TUTORIAL = "android.intent.action.SYSTEM_TUTORIAL";
998    /**
999     * Activity Action: Perform a web search.
1000     * <p>
1001     * Input: {@link android.app.SearchManager#QUERY
1002     * getStringExtra(SearchManager.QUERY)} is the text to search for. If it is
1003     * a url starts with http or https, the site will be opened. If it is plain
1004     * text, Google search will be applied.
1005     * <p>
1006     * Output: nothing.
1007     */
1008    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1009    public static final String ACTION_WEB_SEARCH = "android.intent.action.WEB_SEARCH";
1010    /**
1011     * Activity Action: List all available applications
1012     * <p>Input: Nothing.
1013     * <p>Output: nothing.
1014     */
1015    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1016    public static final String ACTION_ALL_APPS = "android.intent.action.ALL_APPS";
1017    /**
1018     * Activity Action: Show settings for choosing wallpaper
1019     * <p>Input: Nothing.
1020     * <p>Output: Nothing.
1021     */
1022    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1023    public static final String ACTION_SET_WALLPAPER = "android.intent.action.SET_WALLPAPER";
1024
1025    /**
1026     * Activity Action: Show activity for reporting a bug.
1027     * <p>Input: Nothing.
1028     * <p>Output: Nothing.
1029     */
1030    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1031    public static final String ACTION_BUG_REPORT = "android.intent.action.BUG_REPORT";
1032
1033    /**
1034     *  Activity Action: Main entry point for factory tests.  Only used when
1035     *  the device is booting in factory test node.  The implementing package
1036     *  must be installed in the system image.
1037     *  <p>Input: nothing
1038     *  <p>Output: nothing
1039     */
1040    public static final String ACTION_FACTORY_TEST = "android.intent.action.FACTORY_TEST";
1041
1042    /**
1043     * Activity Action: The user pressed the "call" button to go to the dialer
1044     * or other appropriate UI for placing a call.
1045     * <p>Input: Nothing.
1046     * <p>Output: Nothing.
1047     */
1048    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1049    public static final String ACTION_CALL_BUTTON = "android.intent.action.CALL_BUTTON";
1050
1051    /**
1052     * Activity Action: Start Voice Command.
1053     * <p>Input: Nothing.
1054     * <p>Output: Nothing.
1055     */
1056    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1057    public static final String ACTION_VOICE_COMMAND = "android.intent.action.VOICE_COMMAND";
1058
1059    /**
1060     * Activity Action: Start action associated with long pressing on the
1061     * search key.
1062     * <p>Input: Nothing.
1063     * <p>Output: Nothing.
1064     */
1065    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1066    public static final String ACTION_SEARCH_LONG_PRESS = "android.intent.action.SEARCH_LONG_PRESS";
1067
1068    /**
1069     * Activity Action: The user pressed the "Report" button in the crash/ANR dialog.
1070     * This intent is delivered to the package which installed the application, usually
1071     * the Market.
1072     * <p>Input: No data is specified. The bug report is passed in using
1073     * an {@link #EXTRA_BUG_REPORT} field.
1074     * <p>Output: Nothing.
1075     * @hide
1076     */
1077    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1078    public static final String ACTION_APP_ERROR = "android.intent.action.APP_ERROR";
1079
1080    /**
1081     * Activity Action: Show power usage information to the user.
1082     * <p>Input: Nothing.
1083     * <p>Output: Nothing.
1084     */
1085    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1086    public static final String ACTION_POWER_USAGE_SUMMARY = "android.intent.action.POWER_USAGE_SUMMARY";
1087
1088    /**
1089     * Activity Action: Setup wizard to launch after a platform update.  This
1090     * activity should have a string meta-data field associated with it,
1091     * {@link #METADATA_SETUP_VERSION}, which defines the current version of
1092     * the platform for setup.  The activity will be launched only if
1093     * {@link android.provider.Settings.Secure#LAST_SETUP_SHOWN} is not the
1094     * same value.
1095     * <p>Input: Nothing.
1096     * <p>Output: Nothing.
1097     * @hide
1098     */
1099    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1100    public static final String ACTION_UPGRADE_SETUP = "android.intent.action.UPGRADE_SETUP";
1101
1102    /**
1103     * A string associated with a {@link #ACTION_UPGRADE_SETUP} activity
1104     * describing the last run version of the platform that was setup.
1105     * @hide
1106     */
1107    public static final String METADATA_SETUP_VERSION = "android.SETUP_VERSION";
1108
1109    // ---------------------------------------------------------------------
1110    // ---------------------------------------------------------------------
1111    // Standard intent broadcast actions (see action variable).
1112
1113    /**
1114     * Broadcast Action: Sent after the screen turns off.
1115     *
1116     * <p class="note">This is a protected intent that can only be sent
1117     * by the system.
1118     */
1119    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1120    public static final String ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF";
1121    /**
1122     * Broadcast Action: Sent after the screen turns on.
1123     *
1124     * <p class="note">This is a protected intent that can only be sent
1125     * by the system.
1126     */
1127    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1128    public static final String ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON";
1129
1130    /**
1131     * Broadcast Action: Sent when the user is present after device wakes up (e.g when the
1132     * keyguard is gone).
1133     *
1134     * <p class="note">This is a protected intent that can only be sent
1135     * by the system.
1136     */
1137    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1138    public static final String ACTION_USER_PRESENT= "android.intent.action.USER_PRESENT";
1139
1140    /**
1141     * Broadcast Action: The current time has changed.  Sent every
1142     * minute.  You can <em>not</em> receive this through components declared
1143     * in manifests, only by exlicitly registering for it with
1144     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1145     * Context.registerReceiver()}.
1146     *
1147     * <p class="note">This is a protected intent that can only be sent
1148     * by the system.
1149     */
1150    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1151    public static final String ACTION_TIME_TICK = "android.intent.action.TIME_TICK";
1152    /**
1153     * Broadcast Action: The time was set.
1154     */
1155    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1156    public static final String ACTION_TIME_CHANGED = "android.intent.action.TIME_SET";
1157    /**
1158     * Broadcast Action: The date has changed.
1159     */
1160    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1161    public static final String ACTION_DATE_CHANGED = "android.intent.action.DATE_CHANGED";
1162    /**
1163     * Broadcast Action: The timezone has changed. The intent will have the following extra values:</p>
1164     * <ul>
1165     *   <li><em>time-zone</em> - The java.util.TimeZone.getID() value identifying the new time zone.</li>
1166     * </ul>
1167     *
1168     * <p class="note">This is a protected intent that can only be sent
1169     * by the system.
1170     */
1171    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1172    public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
1173    /**
1174     * Alarm Changed Action: This is broadcast when the AlarmClock
1175     * application's alarm is set or unset.  It is used by the
1176     * AlarmClock application and the StatusBar service.
1177     * @hide
1178     */
1179    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1180    public static final String ACTION_ALARM_CHANGED = "android.intent.action.ALARM_CHANGED";
1181    /**
1182     * Sync State Changed Action: This is broadcast when the sync starts or stops or when one has
1183     * been failing for a long time.  It is used by the SyncManager and the StatusBar service.
1184     * @hide
1185     */
1186    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1187    public static final String ACTION_SYNC_STATE_CHANGED
1188            = "android.intent.action.SYNC_STATE_CHANGED";
1189    /**
1190     * Broadcast Action: This is broadcast once, after the system has finished
1191     * booting.  It can be used to perform application-specific initialization,
1192     * such as installing alarms.  You must hold the
1193     * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED} permission
1194     * in order to receive this broadcast.
1195     *
1196     * <p class="note">This is a protected intent that can only be sent
1197     * by the system.
1198     */
1199    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1200    public static final String ACTION_BOOT_COMPLETED = "android.intent.action.BOOT_COMPLETED";
1201    /**
1202     * Broadcast Action: This is broadcast when a user action should request a
1203     * temporary system dialog to dismiss.  Some examples of temporary system
1204     * dialogs are the notification window-shade and the recent tasks dialog.
1205     */
1206    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1207    /**
1208     * Broadcast Action: Trigger the download and eventual installation
1209     * of a package.
1210     * <p>Input: {@link #getData} is the URI of the package file to download.
1211     *
1212     * <p class="note">This is a protected intent that can only be sent
1213     * by the system.
1214     */
1215    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1216    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1217    /**
1218     * Broadcast Action: A new application package has been installed on the
1219     * device. The data contains the name of the package.  Note that the
1220     * newly installed package does <em>not</em> receive this broadcast.
1221     * <p>My include the following extras:
1222     * <ul>
1223     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1224     * <li> {@link #EXTRA_REPLACING} is set to true if this is following
1225     * an {@link #ACTION_PACKAGE_REMOVED} broadcast for the same package.
1226     * </ul>
1227     *
1228     * <p class="note">This is a protected intent that can only be sent
1229     * by the system.
1230     */
1231    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1232    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1233    /**
1234     * Broadcast Action: A new version of an application package has been
1235     * installed, replacing an existing version that was previously installed.
1236     * The data contains the name of the package.
1237     * <p>My include the following extras:
1238     * <ul>
1239     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the new package.
1240     * </ul>
1241     *
1242     * <p class="note">This is a protected intent that can only be sent
1243     * by the system.
1244     */
1245    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1246    public static final String ACTION_PACKAGE_REPLACED = "android.intent.action.PACKAGE_REPLACED";
1247    /**
1248     * Broadcast Action: An existing application package has been removed from
1249     * the device.  The data contains the name of the package.  The package
1250     * that is being installed does <em>not</em> receive this Intent.
1251     * <ul>
1252     * <li> {@link #EXTRA_UID} containing the integer uid previously assigned
1253     * to the package.
1254     * <li> {@link #EXTRA_DATA_REMOVED} is set to true if the entire
1255     * application -- data and code -- is being removed.
1256     * <li> {@link #EXTRA_REPLACING} is set to true if this will be followed
1257     * by an {@link #ACTION_PACKAGE_ADDED} broadcast for the same package.
1258     * </ul>
1259     *
1260     * <p class="note">This is a protected intent that can only be sent
1261     * by the system.
1262     */
1263    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1264    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1265    /**
1266     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1267     * enabled or disabled.  The data contains the name of the package.
1268     * <ul>
1269     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1270     * </ul>
1271     *
1272     * <p class="note">This is a protected intent that can only be sent
1273     * by the system.
1274     */
1275    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1276    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1277    /**
1278     * Broadcast Action: The user has restarted a package, and all of its
1279     * processes have been killed.  All runtime state
1280     * associated with it (processes, alarms, notifications, etc) should
1281     * be removed.  Note that the restarted package does <em>not</em>
1282     * receive this broadcast.
1283     * The data contains the name of the package.
1284     * <ul>
1285     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1286     * </ul>
1287     *
1288     * <p class="note">This is a protected intent that can only be sent
1289     * by the system.
1290     */
1291    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1292    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1293    /**
1294     * Broadcast Action: The user has cleared the data of a package.  This should
1295     * be preceded by {@link #ACTION_PACKAGE_RESTARTED}, after which all of
1296     * its persistent data is erased and this broadcast sent.
1297     * Note that the cleared package does <em>not</em>
1298     * receive this broadcast. The data contains the name of the package.
1299     * <ul>
1300     * <li> {@link #EXTRA_UID} containing the integer uid assigned to the package.
1301     * </ul>
1302     *
1303     * <p class="note">This is a protected intent that can only be sent
1304     * by the system.
1305     */
1306    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1307    public static final String ACTION_PACKAGE_DATA_CLEARED = "android.intent.action.PACKAGE_DATA_CLEARED";
1308    /**
1309     * Broadcast Action: A user ID has been removed from the system.  The user
1310     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1311     *
1312     * <p class="note">This is a protected intent that can only be sent
1313     * by the system.
1314     */
1315    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1316    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1317    /**
1318     * Broadcast Action:  The current system wallpaper has changed.  See
1319     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1320     */
1321    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1322    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1323    /**
1324     * Broadcast Action: The current device {@link android.content.res.Configuration}
1325     * (orientation, locale, etc) has changed.  When such a change happens, the
1326     * UIs (view hierarchy) will need to be rebuilt based on this new
1327     * information; for the most part, applications don't need to worry about
1328     * this, because the system will take care of stopping and restarting the
1329     * application to make sure it sees the new changes.  Some system code that
1330     * can not be restarted will need to watch for this action and handle it
1331     * appropriately.
1332     *
1333     * <p class="note">This is a protected intent that can only be sent
1334     * by the system.
1335     *
1336     * @see android.content.res.Configuration
1337     */
1338    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1339    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1340    /**
1341     * Broadcast Action:  The charging state, or charge level of the battery has
1342     * changed.
1343     *
1344     * <p class="note">
1345     * You can <em>not</em> receive this through components declared
1346     * in manifests, only by explicitly registering for it with
1347     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1348     * Context.registerReceiver()}.
1349     *
1350     * <p class="note">This is a protected intent that can only be sent
1351     * by the system.
1352     */
1353    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1354    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1355    /**
1356     * Broadcast Action:  Indicates low battery condition on the device.
1357     * This broadcast corresponds to the "Low battery warning" system dialog.
1358     *
1359     * <p class="note">This is a protected intent that can only be sent
1360     * by the system.
1361     */
1362    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1363    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1364    /**
1365     * Broadcast Action:  Indicates the battery is now okay after being low.
1366     * This will be sent after {@link #ACTION_BATTERY_LOW} once the battery has
1367     * gone back up to an okay state.
1368     *
1369     * <p class="note">This is a protected intent that can only be sent
1370     * by the system.
1371     */
1372    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1373    public static final String ACTION_BATTERY_OKAY = "android.intent.action.BATTERY_OKAY";
1374    /**
1375     * Broadcast Action:  External power has been connected to the device.
1376     * This is intended for applications that wish to register specifically to this notification.
1377     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1378     * stay active to receive this notification.  This action can be used to implement actions
1379     * that wait until power is available to trigger.
1380     *
1381     * <p class="note">This is a protected intent that can only be sent
1382     * by the system.
1383     */
1384    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1385    public static final String ACTION_POWER_CONNECTED = "android.intent.action.POWER_CONNECTED";
1386    /**
1387     * Broadcast Action:  External power has been removed from the device.
1388     * This is intended for applications that wish to register specifically to this notification.
1389     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1390     * stay active to receive this notification.  This action can be used to implement actions
1391     * that wait until power is available to trigger.
1392     *
1393     * <p class="note">This is a protected intent that can only be sent
1394     * by the system.
1395     */
1396    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1397    public static final String ACTION_POWER_DISCONNECTED =
1398            "android.intent.action.POWER_DISCONNECTED";
1399    /**
1400     * Broadcast Action:  Device is shutting down.
1401     * This is broadcast when the device is being shut down (completely turned
1402     * off, not sleeping).  Once the broadcast is complete, the final shutdown
1403     * will proceed and all unsaved data lost.  Apps will not normally need
1404     * to handle this, since the forground activity will be paused as well.
1405     *
1406     * <p class="note">This is a protected intent that can only be sent
1407     * by the system.
1408     */
1409    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1410    public static final String ACTION_SHUTDOWN = "android.intent.action.ACTION_SHUTDOWN";
1411    /**
1412     * Broadcast Action:  Indicates low memory condition on the device
1413     *
1414     * <p class="note">This is a protected intent that can only be sent
1415     * by the system.
1416     */
1417    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1418    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1419    /**
1420     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1421     *
1422     * <p class="note">This is a protected intent that can only be sent
1423     * by the system.
1424     */
1425    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1426    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1427    /**
1428     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1429     * and package management should be started.
1430     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1431     * notification.
1432     */
1433    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1434    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1435    /**
1436     * Broadcast Action:  The device has entered USB Mass Storage mode.
1437     * This is used mainly for the USB Settings panel.
1438     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1439     * when the SD card file system is mounted or unmounted
1440     */
1441    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1442    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1443
1444    /**
1445     * Broadcast Action:  The device has exited USB Mass Storage mode.
1446     * This is used mainly for the USB Settings panel.
1447     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1448     * when the SD card file system is mounted or unmounted
1449     */
1450    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1451    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1452
1453    /**
1454     * Broadcast Action:  External media has been removed.
1455     * The path to the mount point for the removed media is contained in the Intent.mData field.
1456     */
1457    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1458    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1459
1460    /**
1461     * Broadcast Action:  External media is present, but not mounted at its mount point.
1462     * The path to the mount point for the removed media is contained in the Intent.mData field.
1463     */
1464    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1465    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1466
1467    /**
1468     * Broadcast Action:  External media is present, and being disk-checked
1469     * The path to the mount point for the checking media is contained in the Intent.mData field.
1470     */
1471    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1472    public static final String ACTION_MEDIA_CHECKING = "android.intent.action.MEDIA_CHECKING";
1473
1474    /**
1475     * Broadcast Action:  External media is present, but is using an incompatible fs (or is blank)
1476     * The path to the mount point for the checking media is contained in the Intent.mData field.
1477     */
1478    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1479    public static final String ACTION_MEDIA_NOFS = "android.intent.action.MEDIA_NOFS";
1480
1481    /**
1482     * Broadcast Action:  External media is present and mounted at its mount point.
1483     * The path to the mount point for the removed media is contained in the Intent.mData field.
1484     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1485     * media was mounted read only.
1486     */
1487    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1488    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1489
1490    /**
1491     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1492     * The path to the mount point for the removed media is contained in the Intent.mData field.
1493     */
1494    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1495    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1496
1497    /**
1498     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1499     * The path to the mount point for the removed media is contained in the Intent.mData field.
1500     */
1501    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1502    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1503
1504    /**
1505     * Broadcast Action:  External media is present but cannot be mounted.
1506     * The path to the mount point for the removed media is contained in the Intent.mData field.
1507     */
1508    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1509    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1510
1511   /**
1512     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1513     * Applications should close all files they have open within the mount point when they receive this intent.
1514     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1515     */
1516    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1517    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1518
1519    /**
1520     * Broadcast Action:  The media scanner has started scanning a directory.
1521     * The path to the directory being scanned is contained in the Intent.mData field.
1522     */
1523    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1524    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1525
1526   /**
1527     * Broadcast Action:  The media scanner has finished scanning a directory.
1528     * The path to the scanned directory is contained in the Intent.mData field.
1529     */
1530    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1531    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1532
1533   /**
1534     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1535     * The path to the file is contained in the Intent.mData field.
1536     */
1537    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1538    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1539
1540   /**
1541     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1542     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1543     * caused the broadcast.
1544     */
1545    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1546    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1547
1548    /**
1549     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1550     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1551     * caused the broadcast.
1552     */
1553    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1554    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1555
1556    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1557    // location; they are not general-purpose actions.
1558
1559    /**
1560     * Broadcast Action: An GTalk connection has been established.
1561     */
1562    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1563    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1564            "android.intent.action.GTALK_CONNECTED";
1565
1566    /**
1567     * Broadcast Action: An GTalk connection has been disconnected.
1568     */
1569    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1570    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1571            "android.intent.action.GTALK_DISCONNECTED";
1572
1573    /**
1574     * Broadcast Action: An input method has been changed.
1575     */
1576    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1577    public static final String ACTION_INPUT_METHOD_CHANGED =
1578            "android.intent.action.INPUT_METHOD_CHANGED";
1579
1580    /**
1581     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1582     * more radios have been turned off or on. The intent will have the following extra value:</p>
1583     * <ul>
1584     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1585     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1586     *   turned off</li>
1587     * </ul>
1588     *
1589     * <p class="note">This is a protected intent that can only be sent
1590     * by the system.
1591     */
1592    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1593    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1594
1595    /**
1596     * Broadcast Action: Some content providers have parts of their namespace
1597     * where they publish new events or items that the user may be especially
1598     * interested in. For these things, they may broadcast this action when the
1599     * set of interesting items change.
1600     *
1601     * For example, GmailProvider sends this notification when the set of unread
1602     * mail in the inbox changes.
1603     *
1604     * <p>The data of the intent identifies which part of which provider
1605     * changed. When queried through the content resolver, the data URI will
1606     * return the data set in question.
1607     *
1608     * <p>The intent will have the following extra values:
1609     * <ul>
1610     *   <li><em>count</em> - The number of items in the data set. This is the
1611     *       same as the number of items in the cursor returned by querying the
1612     *       data URI. </li>
1613     * </ul>
1614     *
1615     * This intent will be sent at boot (if the count is non-zero) and when the
1616     * data set changes. It is possible for the data set to change without the
1617     * count changing (for example, if a new unread message arrives in the same
1618     * sync operation in which a message is archived). The phone should still
1619     * ring/vibrate/etc as normal in this case.
1620     */
1621    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1622    public static final String ACTION_PROVIDER_CHANGED =
1623            "android.intent.action.PROVIDER_CHANGED";
1624
1625    /**
1626     * Broadcast Action: Wired Headset plugged in or unplugged.
1627     *
1628     * <p>The intent will have the following extra values:
1629     * <ul>
1630     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1631     *   <li><em>name</em> - Headset type, human readable string </li>
1632     * </ul>
1633     * </ul>
1634     */
1635    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1636    public static final String ACTION_HEADSET_PLUG =
1637            "android.intent.action.HEADSET_PLUG";
1638
1639    /**
1640     * Broadcast Action: An outgoing call is about to be placed.
1641     *
1642     * <p>The Intent will have the following extra value:
1643     * <ul>
1644     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1645     *       the phone number originally intended to be dialed.</li>
1646     * </ul>
1647     * <p>Once the broadcast is finished, the resultData is used as the actual
1648     * number to call.  If  <code>null</code>, no call will be placed.</p>
1649     * <p>It is perfectly acceptable for multiple receivers to process the
1650     * outgoing call in turn: for example, a parental control application
1651     * might verify that the user is authorized to place the call at that
1652     * time, then a number-rewriting application might add an area code if
1653     * one was not specified.</p>
1654     * <p>For consistency, any receiver whose purpose is to prohibit phone
1655     * calls should have a priority of 0, to ensure it will see the final
1656     * phone number to be dialed.
1657     * Any receiver whose purpose is to rewrite phone numbers to be called
1658     * should have a positive priority.
1659     * Negative priorities are reserved for the system for this broadcast;
1660     * using them may cause problems.</p>
1661     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1662     * abort the broadcast.</p>
1663     * <p>Emergency calls cannot be intercepted using this mechanism, and
1664     * other calls cannot be modified to call emergency numbers using this
1665     * mechanism.
1666     * <p>You must hold the
1667     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1668     * permission to receive this Intent.</p>
1669     *
1670     * <p class="note">This is a protected intent that can only be sent
1671     * by the system.
1672     */
1673    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1674    public static final String ACTION_NEW_OUTGOING_CALL =
1675            "android.intent.action.NEW_OUTGOING_CALL";
1676
1677    /**
1678     * Broadcast Action: Have the device reboot.  This is only for use by
1679     * system code.
1680     *
1681     * <p class="note">This is a protected intent that can only be sent
1682     * by the system.
1683     */
1684    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1685    public static final String ACTION_REBOOT =
1686            "android.intent.action.REBOOT";
1687    /**
1688     * Broadcast Action: Triggers the platform Text-To-Speech engine to
1689     * start the activity that installs the resource files on the device
1690     * that are required for TTS to be operational. Since the installation
1691     * of the data can be interrupted or declined by the user, the application
1692     * shouldn't expect successful installation upon return from that intent,
1693     * and if need be, should check installation status with
1694     * {@link #ACTION_TTS_CHECK_TTS_DATA}.
1695     */
1696    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1697    public static final String ACTION_TTS_INSTALL_TTS_DATA =
1698            "android.intent.action.INSTALL_TTS_DATA";
1699
1700    /**
1701     * Broadcast Action: Starts the activity from the platform Text-To-Speech
1702     * engine to verify the proper installation and availability of the
1703     * resource files on the system. Upon completion, the activity will
1704     * return one of the following codes:
1705     * {@link android.speech.tts.TextToSpeech.Engine#CHECK_VOICE_DATA_PASS},
1706     * {@link android.speech.tts.TextToSpeech.Engine#CHECK_VOICE_DATA_FAIL},
1707     * {@link android.speech.tts.TextToSpeech.Engine#CHECK_VOICE_DATA_BAD_DATA},
1708     * {@link android.speech.tts.TextToSpeech.Engine#CHECK_VOICE_DATA_MISSING_DATA}, or
1709     * {@link android.speech.tts.TextToSpeech.Engine#CHECK_VOICE_DATA_MISSING_VOLUME}.
1710     * <p> Moreover, the data received in the activity result will contain the following
1711     * fields:
1712     * <ul>
1713     *   <li>{@link android.speech.tts.TextToSpeech.Engine#VOICE_DATA_ROOT_DIRECTORY} which
1714     *       indicates the path to the location of the resource files</li>,
1715     *   <li>{@link android.speech.tts.TextToSpeech.Engine#VOICE_DATA_FILES} which contains
1716     *       the list of all the resource files</li>,
1717     *   <li>and {@link android.speech.tts.TextToSpeech.Engine#VOICE_DATA_FILES_INFO} which
1718     *       contains, for each resource file, the description of the language covered by
1719     *       the file in the xxx-YYY format, where xxx is the 3-letter ISO language code,
1720     *       and YYY is the 3-letter ISO country code.</li>
1721     * </ul>
1722     */
1723    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1724    public static final String ACTION_TTS_CHECK_TTS_DATA =
1725            "android.intent.action.CHECK_TTS_DATA";
1726
1727    /**
1728     * Broadcast Action: The TextToSpeech synthesizer has completed processing
1729     * all of the text in the speech queue.
1730     */
1731    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1732    public static final String ACTION_TTS_QUEUE_PROCESSING_COMPLETED =
1733            "android.intent.action.TTS_QUEUE_PROCESSING_COMPLETED";
1734
1735    /**
1736     * Broadcast Action: a remote intent is to be broadcasted.
1737     *
1738     * A remote intent is used for remote RPC between devices. The remote intent
1739     * is serialized and sent from one device to another device. The receiving
1740     * device parses the remote intent and broadcasts it. Note that anyone can
1741     * broadcast a remote intent. However, if the intent receiver of the remote intent
1742     * does not trust intent broadcasts from arbitrary intent senders, it should require
1743     * the sender to hold certain permissions so only trusted sender's broadcast will be
1744     * let through.
1745     */
1746    public static final String ACTION_REMOTE_INTENT =
1747            "android.intent.action.REMOTE_INTENT";
1748
1749    // ---------------------------------------------------------------------
1750    // ---------------------------------------------------------------------
1751    // Standard intent categories (see addCategory()).
1752
1753    /**
1754     * Set if the activity should be an option for the default action
1755     * (center press) to perform on a piece of data.  Setting this will
1756     * hide from the user any activities without it set when performing an
1757     * action on some data.  Note that this is normal -not- set in the
1758     * Intent when initiating an action -- it is for use in intent filters
1759     * specified in packages.
1760     */
1761    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1762    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1763    /**
1764     * Activities that can be safely invoked from a browser must support this
1765     * category.  For example, if the user is viewing a web page or an e-mail
1766     * and clicks on a link in the text, the Intent generated execute that
1767     * link will require the BROWSABLE category, so that only activities
1768     * supporting this category will be considered as possible actions.  By
1769     * supporting this category, you are promising that there is nothing
1770     * damaging (without user intervention) that can happen by invoking any
1771     * matching Intent.
1772     */
1773    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1774    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1775    /**
1776     * Set if the activity should be considered as an alternative action to
1777     * the data the user is currently viewing.  See also
1778     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1779     * applies to the selection in a list of items.
1780     *
1781     * <p>Supporting this category means that you would like your activity to be
1782     * displayed in the set of alternative things the user can do, usually as
1783     * part of the current activity's options menu.  You will usually want to
1784     * include a specific label in the &lt;intent-filter&gt; of this action
1785     * describing to the user what it does.
1786     *
1787     * <p>The action of IntentFilter with this category is important in that it
1788     * describes the specific action the target will perform.  This generally
1789     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1790     * a specific name such as "com.android.camera.action.CROP.  Only one
1791     * alternative of any particular action will be shown to the user, so using
1792     * a specific action like this makes sure that your alternative will be
1793     * displayed while also allowing other applications to provide their own
1794     * overrides of that particular action.
1795     */
1796    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1797    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1798    /**
1799     * Set if the activity should be considered as an alternative selection
1800     * action to the data the user has currently selected.  This is like
1801     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1802     * of items from which the user can select, giving them alternatives to the
1803     * default action that will be performed on it.
1804     */
1805    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1806    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1807    /**
1808     * Intended to be used as a tab inside of an containing TabActivity.
1809     */
1810    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1811    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1812    /**
1813     * Should be displayed in the top-level launcher.
1814     */
1815    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1816    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1817    /**
1818     * Provides information about the package it is in; typically used if
1819     * a package does not contain a {@link #CATEGORY_LAUNCHER} to provide
1820     * a front-door to the user without having to be shown in the all apps list.
1821     */
1822    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1823    public static final String CATEGORY_INFO = "android.intent.category.INFO";
1824    /**
1825     * This is the home activity, that is the first activity that is displayed
1826     * when the device boots.
1827     */
1828    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1829    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1830    /**
1831     * This activity is a preference panel.
1832     */
1833    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1834    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1835    /**
1836     * This activity is a development preference panel.
1837     */
1838    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1839    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1840    /**
1841     * Capable of running inside a parent activity container.
1842     */
1843    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1844    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1845    /**
1846     * This activity may be exercised by the monkey or other automated test tools.
1847     */
1848    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1849    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1850    /**
1851     * To be used as a test (not part of the normal user experience).
1852     */
1853    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1854    /**
1855     * To be used as a unit test (run through the Test Harness).
1856     */
1857    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1858    /**
1859     * To be used as an sample code example (not part of the normal user
1860     * experience).
1861     */
1862    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1863    /**
1864     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1865     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1866     * when queried, though it is allowable for those columns to be blank.
1867     */
1868    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1869    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1870
1871    /**
1872     * To be used as code under test for framework instrumentation tests.
1873     */
1874    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1875            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1876    // ---------------------------------------------------------------------
1877    // ---------------------------------------------------------------------
1878    // Standard extra data keys.
1879
1880    /**
1881     * The initial data to place in a newly created record.  Use with
1882     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1883     * fields as would be given to the underlying ContentProvider.insert()
1884     * call.
1885     */
1886    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1887
1888    /**
1889     * A constant CharSequence that is associated with the Intent, used with
1890     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1891     * this may be a styled CharSequence, so you must use
1892     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1893     * retrieve it.
1894     */
1895    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1896
1897    /**
1898     * A content: URI holding a stream of data associated with the Intent,
1899     * used with {@link #ACTION_SEND} to supply the data being sent.
1900     */
1901    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1902
1903    /**
1904     * A String[] holding e-mail addresses that should be delivered to.
1905     */
1906    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1907
1908    /**
1909     * A String[] holding e-mail addresses that should be carbon copied.
1910     */
1911    public static final String EXTRA_CC       = "android.intent.extra.CC";
1912
1913    /**
1914     * A String[] holding e-mail addresses that should be blind carbon copied.
1915     */
1916    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1917
1918    /**
1919     * A constant string holding the desired subject line of a message.
1920     */
1921    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1922
1923    /**
1924     * An Intent describing the choices you would like shown with
1925     * {@link #ACTION_PICK_ACTIVITY}.
1926     */
1927    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1928
1929    /**
1930     * A CharSequence dialog title to provide to the user when used with a
1931     * {@link #ACTION_CHOOSER}.
1932     */
1933    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1934
1935    /**
1936     * A {@link android.view.KeyEvent} object containing the event that
1937     * triggered the creation of the Intent it is in.
1938     */
1939    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1940
1941    /**
1942     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1943     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1944     * of restarting the application.
1945     */
1946    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1947
1948    /**
1949     * A String holding the phone number originally entered in
1950     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1951     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1952     */
1953    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1954    /**
1955     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1956     * intents to supply the uid the package had been assigned.  Also an optional
1957     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1958     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1959     * purpose.
1960     */
1961    public static final String EXTRA_UID = "android.intent.extra.UID";
1962
1963    /**
1964     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1965     * intents to indicate whether this represents a full uninstall (removing
1966     * both the code and its data) or a partial uninstall (leaving its data,
1967     * implying that this is an update).
1968     */
1969    public static final String EXTRA_DATA_REMOVED = "android.intent.extra.DATA_REMOVED";
1970
1971    /**
1972     * Used as a boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED}
1973     * intents to indicate that this is a replacement of the package, so this
1974     * broadcast will immediately be followed by an add broadcast for a
1975     * different version of the same package.
1976     */
1977    public static final String EXTRA_REPLACING = "android.intent.extra.REPLACING";
1978
1979    /**
1980     * Used as an int extra field in {@link android.app.AlarmManager} intents
1981     * to tell the application being invoked how many pending alarms are being
1982     * delievered with the intent.  For one-shot alarms this will always be 1.
1983     * For recurring alarms, this might be greater than 1 if the device was
1984     * asleep or powered off at the time an earlier alarm would have been
1985     * delivered.
1986     */
1987    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1988
1989    /**
1990     * Used as a parcelable extra field in {@link #ACTION_APP_ERROR}, containing
1991     * the bug report.
1992     *
1993     * @hide
1994     */
1995    public static final String EXTRA_BUG_REPORT = "android.intent.extra.BUG_REPORT";
1996
1997    /**
1998     * Used as a string extra field when sending an intent to PackageInstaller to install a
1999     * package. Specifies the installer package name; this package will receive the
2000     * {@link #ACTION_APP_ERROR} intent.
2001     *
2002     * @hide
2003     */
2004    public static final String EXTRA_INSTALLER_PACKAGE_NAME
2005            = "android.intent.extra.INSTALLER_PACKAGE_NAME";
2006
2007    /**
2008     * Used in the extra field in the remote intent. It's astring token passed with the
2009     * remote intent.
2010     */
2011    public static final String EXTRA_REMOTE_INTENT_TOKEN =
2012            "android.intent.extra.remote_intent_token";
2013
2014    // ---------------------------------------------------------------------
2015    // ---------------------------------------------------------------------
2016    // Intent flags (see mFlags variable).
2017
2018    /**
2019     * If set, the recipient of this Intent will be granted permission to
2020     * perform read operations on the Uri in the Intent's data.
2021     */
2022    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
2023    /**
2024     * If set, the recipient of this Intent will be granted permission to
2025     * perform write operations on the Uri in the Intent's data.
2026     */
2027    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
2028    /**
2029     * Can be set by the caller to indicate that this Intent is coming from
2030     * a background operation, not from direct user interaction.
2031     */
2032    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
2033    /**
2034     * A flag you can enable for debugging: when set, log messages will be
2035     * printed during the resolution of this intent to show you what has
2036     * been found to create the final resolved list.
2037     */
2038    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
2039
2040    /**
2041     * If set, the new activity is not kept in the history stack.  As soon as
2042     * the user navigates away from it, the activity is finished.  This may also
2043     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
2044     * noHistory} attribute.
2045     */
2046    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
2047    /**
2048     * If set, the activity will not be launched if it is already running
2049     * at the top of the history stack.
2050     */
2051    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
2052    /**
2053     * If set, this activity will become the start of a new task on this
2054     * history stack.  A task (from the activity that started it to the
2055     * next task activity) defines an atomic group of activities that the
2056     * user can move to.  Tasks can be moved to the foreground and background;
2057     * all of the activities inside of a particular task always remain in
2058     * the same order.  See
2059     * <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2060     * Activities and Tasks</a> for more details on tasks.
2061     *
2062     * <p>This flag is generally used by activities that want
2063     * to present a "launcher" style behavior: they give the user a list of
2064     * separate things that can be done, which otherwise run completely
2065     * independently of the activity launching them.
2066     *
2067     * <p>When using this flag, if a task is already running for the activity
2068     * you are now starting, then a new activity will not be started; instead,
2069     * the current task will simply be brought to the front of the screen with
2070     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
2071     * to disable this behavior.
2072     *
2073     * <p>This flag can not be used when the caller is requesting a result from
2074     * the activity being launched.
2075     */
2076    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
2077    /**
2078     * <strong>Do not use this flag unless you are implementing your own
2079     * top-level application launcher.</strong>  Used in conjunction with
2080     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
2081     * behavior of bringing an existing task to the foreground.  When set,
2082     * a new task is <em>always</em> started to host the Activity for the
2083     * Intent, regardless of whether there is already an existing task running
2084     * the same thing.
2085     *
2086     * <p><strong>Because the default system does not include graphical task management,
2087     * you should not use this flag unless you provide some way for a user to
2088     * return back to the tasks you have launched.</strong>
2089     *
2090     * <p>This flag is ignored if
2091     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
2092     *
2093     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2094     * Activities and Tasks</a> for more details on tasks.
2095     */
2096    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
2097    /**
2098     * If set, and the activity being launched is already running in the
2099     * current task, then instead of launching a new instance of that activity,
2100     * all of the other activities on top of it will be closed and this Intent
2101     * will be delivered to the (now on top) old activity as a new Intent.
2102     *
2103     * <p>For example, consider a task consisting of the activities: A, B, C, D.
2104     * If D calls startActivity() with an Intent that resolves to the component
2105     * of activity B, then C and D will be finished and B receive the given
2106     * Intent, resulting in the stack now being: A, B.
2107     *
2108     * <p>The currently running instance of task B in the above example will
2109     * either receive the new intent you are starting here in its
2110     * onNewIntent() method, or be itself finished and restarted with the
2111     * new intent.  If it has declared its launch mode to be "multiple" (the
2112     * default) it will be finished and re-created; for all other launch modes
2113     * it will receive the Intent in the current instance.
2114     *
2115     * <p>This launch mode can also be used to good effect in conjunction with
2116     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
2117     * of a task, it will bring any currently running instance of that task
2118     * to the foreground, and then clear it to its root state.  This is
2119     * especially useful, for example, when launching an activity from the
2120     * notification manager.
2121     *
2122     * <p>See <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
2123     * Activities and Tasks</a> for more details on tasks.
2124     */
2125    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
2126    /**
2127     * If set and this intent is being used to launch a new activity from an
2128     * existing one, then the reply target of the existing activity will be
2129     * transfered to the new activity.  This way the new activity can call
2130     * {@link android.app.Activity#setResult} and have that result sent back to
2131     * the reply target of the original activity.
2132     */
2133    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
2134    /**
2135     * If set and this intent is being used to launch a new activity from an
2136     * existing one, the current activity will not be counted as the top
2137     * activity for deciding whether the new intent should be delivered to
2138     * the top instead of starting a new one.  The previous activity will
2139     * be used as the top, with the assumption being that the current activity
2140     * will finish itself immediately.
2141     */
2142    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
2143    /**
2144     * If set, the new activity is not kept in the list of recently launched
2145     * activities.
2146     */
2147    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
2148    /**
2149     * This flag is not normally set by application code, but set for you by
2150     * the system as described in the
2151     * {@link android.R.styleable#AndroidManifestActivity_launchMode
2152     * launchMode} documentation for the singleTask mode.
2153     */
2154    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
2155    /**
2156     * If set, and this activity is either being started in a new task or
2157     * bringing to the top an existing task, then it will be launched as
2158     * the front door of the task.  This will result in the application of
2159     * any affinities needed to have that task in the proper state (either
2160     * moving activities to or from it), or simply resetting that task to
2161     * its initial state if needed.
2162     */
2163    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
2164    /**
2165     * This flag is not normally set by application code, but set for you by
2166     * the system if this activity is being launched from history
2167     * (longpress home key).
2168     */
2169    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
2170    /**
2171     * If set, this marks a point in the task's activity stack that should
2172     * be cleared when the task is reset.  That is, the next time the task
2173     * is brought to the foreground with
2174     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
2175     * the user re-launching it from home), this activity and all on top of
2176     * it will be finished so that the user does not return to them, but
2177     * instead returns to whatever activity preceeded it.
2178     *
2179     * <p>This is useful for cases where you have a logical break in your
2180     * application.  For example, an e-mail application may have a command
2181     * to view an attachment, which launches an image view activity to
2182     * display it.  This activity should be part of the e-mail application's
2183     * task, since it is a part of the task the user is involved in.  However,
2184     * if the user leaves that task, and later selects the e-mail app from
2185     * home, we may like them to return to the conversation they were
2186     * viewing, not the picture attachment, since that is confusing.  By
2187     * setting this flag when launching the image viewer, that viewer and
2188     * any activities it starts will be removed the next time the user returns
2189     * to mail.
2190     */
2191    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
2192    /**
2193     * If set, this flag will prevent the normal {@link android.app.Activity#onUserLeaveHint}
2194     * callback from occurring on the current frontmost activity before it is
2195     * paused as the newly-started activity is brought to the front.
2196     *
2197     * <p>Typically, an activity can rely on that callback to indicate that an
2198     * explicit user action has caused their activity to be moved out of the
2199     * foreground. The callback marks an appropriate point in the activity's
2200     * lifecycle for it to dismiss any notifications that it intends to display
2201     * "until the user has seen them," such as a blinking LED.
2202     *
2203     * <p>If an activity is ever started via any non-user-driven events such as
2204     * phone-call receipt or an alarm handler, this flag should be passed to {@link
2205     * Context#startActivity Context.startActivity}, ensuring that the pausing
2206     * activity does not think the user has acknowledged its notification.
2207     */
2208    public static final int FLAG_ACTIVITY_NO_USER_ACTION = 0x00040000;
2209    /**
2210     * If set in an Intent passed to {@link Context#startActivity Context.startActivity()},
2211     * this flag will cause the launched activity to be brought to the front of its
2212     * task's history stack if it is already running.
2213     *
2214     * <p>For example, consider a task consisting of four activities: A, B, C, D.
2215     * If D calls startActivity() with an Intent that resolves to the component
2216     * of activity B, then B will be brought to the front of the history stack,
2217     * with this resulting order:  A, C, D, B.
2218     *
2219     * This flag will be ignored if {@link #FLAG_ACTIVITY_CLEAR_TOP} is also
2220     * specified.
2221     */
2222    public static final int FLAG_ACTIVITY_REORDER_TO_FRONT = 0X00020000;
2223    /**
2224     * If set, when sending a broadcast only registered receivers will be
2225     * called -- no BroadcastReceiver components will be launched.
2226     */
2227    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
2228    /**
2229     * If set, when sending a broadcast <i>before boot has completed</i> only
2230     * registered receivers will be called -- no BroadcastReceiver components
2231     * will be launched.  Sticky intent state will be recorded properly even
2232     * if no receivers wind up being called.  If {@link #FLAG_RECEIVER_REGISTERED_ONLY}
2233     * is specified in the broadcast intent, this flag is unnecessary.
2234     *
2235     * <p>This flag is only for use by system sevices as a convenience to
2236     * avoid having to implement a more complex mechanism around detection
2237     * of boot completion.
2238     *
2239     * @hide
2240     */
2241    public static final int FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT = 0x20000000;
2242
2243    // ---------------------------------------------------------------------
2244    // ---------------------------------------------------------------------
2245    // toUri() and parseUri() options.
2246
2247    /**
2248     * Flag for use with {@link #toUri} and {@link #parseUri}: the URI string
2249     * always has the "intent:" scheme.  This syntax can be used when you want
2250     * to later disambiguate between URIs that are intended to describe an
2251     * Intent vs. all others that should be treated as raw URIs.  When used
2252     * with {@link #parseUri}, any other scheme will result in a generic
2253     * VIEW action for that raw URI.
2254     */
2255    public static final int URI_INTENT_SCHEME = 1<<0;
2256
2257    // ---------------------------------------------------------------------
2258
2259    private String mAction;
2260    private Uri mData;
2261    private String mType;
2262    private String mPackage;
2263    private ComponentName mComponent;
2264    private int mFlags;
2265    private HashSet<String> mCategories;
2266    private Bundle mExtras;
2267
2268    // ---------------------------------------------------------------------
2269
2270    /**
2271     * Create an empty intent.
2272     */
2273    public Intent() {
2274    }
2275
2276    /**
2277     * Copy constructor.
2278     */
2279    public Intent(Intent o) {
2280        this.mAction = o.mAction;
2281        this.mData = o.mData;
2282        this.mType = o.mType;
2283        this.mPackage = o.mPackage;
2284        this.mComponent = o.mComponent;
2285        this.mFlags = o.mFlags;
2286        if (o.mCategories != null) {
2287            this.mCategories = new HashSet<String>(o.mCategories);
2288        }
2289        if (o.mExtras != null) {
2290            this.mExtras = new Bundle(o.mExtras);
2291        }
2292    }
2293
2294    @Override
2295    public Object clone() {
2296        return new Intent(this);
2297    }
2298
2299    private Intent(Intent o, boolean all) {
2300        this.mAction = o.mAction;
2301        this.mData = o.mData;
2302        this.mType = o.mType;
2303        this.mPackage = o.mPackage;
2304        this.mComponent = o.mComponent;
2305        if (o.mCategories != null) {
2306            this.mCategories = new HashSet<String>(o.mCategories);
2307        }
2308    }
2309
2310    /**
2311     * Make a clone of only the parts of the Intent that are relevant for
2312     * filter matching: the action, data, type, component, and categories.
2313     */
2314    public Intent cloneFilter() {
2315        return new Intent(this, false);
2316    }
2317
2318    /**
2319     * Create an intent with a given action.  All other fields (data, type,
2320     * class) are null.  Note that the action <em>must</em> be in a
2321     * namespace because Intents are used globally in the system -- for
2322     * example the system VIEW action is android.intent.action.VIEW; an
2323     * application's custom action would be something like
2324     * com.google.app.myapp.CUSTOM_ACTION.
2325     *
2326     * @param action The Intent action, such as ACTION_VIEW.
2327     */
2328    public Intent(String action) {
2329        mAction = action;
2330    }
2331
2332    /**
2333     * Create an intent with a given action and for a given data url.  Note
2334     * that the action <em>must</em> be in a namespace because Intents are
2335     * used globally in the system -- for example the system VIEW action is
2336     * android.intent.action.VIEW; an application's custom action would be
2337     * something like com.google.app.myapp.CUSTOM_ACTION.
2338     *
2339     * <p><em>Note: scheme and host name matching in the Android framework is
2340     * case-sensitive, unlike the formal RFC.  As a result,
2341     * you should always ensure that you write your Uri with these elements
2342     * using lower case letters, and normalize any Uris you receive from
2343     * outside of Android to ensure the scheme and host is lower case.</em></p>
2344     *
2345     * @param action The Intent action, such as ACTION_VIEW.
2346     * @param uri The Intent data URI.
2347     */
2348    public Intent(String action, Uri uri) {
2349        mAction = action;
2350        mData = uri;
2351    }
2352
2353    /**
2354     * Create an intent for a specific component.  All other fields (action, data,
2355     * type, class) are null, though they can be modified later with explicit
2356     * calls.  This provides a convenient way to create an intent that is
2357     * intended to execute a hard-coded class name, rather than relying on the
2358     * system to find an appropriate class for you; see {@link #setComponent}
2359     * for more information on the repercussions of this.
2360     *
2361     * @param packageContext A Context of the application package implementing
2362     * this class.
2363     * @param cls The component class that is to be used for the intent.
2364     *
2365     * @see #setClass
2366     * @see #setComponent
2367     * @see #Intent(String, android.net.Uri , Context, Class)
2368     */
2369    public Intent(Context packageContext, Class<?> cls) {
2370        mComponent = new ComponentName(packageContext, cls);
2371    }
2372
2373    /**
2374     * Create an intent for a specific component with a specified action and data.
2375     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
2376     * construct the Intent and then calling {@link #setClass} to set its
2377     * class.
2378     *
2379     * <p><em>Note: scheme and host name matching in the Android framework is
2380     * case-sensitive, unlike the formal RFC.  As a result,
2381     * you should always ensure that you write your Uri with these elements
2382     * using lower case letters, and normalize any Uris you receive from
2383     * outside of Android to ensure the scheme and host is lower case.</em></p>
2384     *
2385     * @param action The Intent action, such as ACTION_VIEW.
2386     * @param uri The Intent data URI.
2387     * @param packageContext A Context of the application package implementing
2388     * this class.
2389     * @param cls The component class that is to be used for the intent.
2390     *
2391     * @see #Intent(String, android.net.Uri)
2392     * @see #Intent(Context, Class)
2393     * @see #setClass
2394     * @see #setComponent
2395     */
2396    public Intent(String action, Uri uri,
2397            Context packageContext, Class<?> cls) {
2398        mAction = action;
2399        mData = uri;
2400        mComponent = new ComponentName(packageContext, cls);
2401    }
2402
2403    /**
2404     * Call {@link #parseUri} with 0 flags.
2405     * @deprecated Use {@link #parseUri} instead.
2406     */
2407    @Deprecated
2408    public static Intent getIntent(String uri) throws URISyntaxException {
2409        return parseUri(uri, 0);
2410    }
2411
2412    /**
2413     * Create an intent from a URI.  This URI may encode the action,
2414     * category, and other intent fields, if it was returned by
2415     * {@link #toUri}..  If the Intent was not generate by toUri(), its data
2416     * will be the entire URI and its action will be ACTION_VIEW.
2417     *
2418     * <p>The URI given here must not be relative -- that is, it must include
2419     * the scheme and full path.
2420     *
2421     * @param uri The URI to turn into an Intent.
2422     * @param flags Additional processing flags.  Either 0 or
2423     *
2424     * @return Intent The newly created Intent object.
2425     *
2426     * @throws URISyntaxException Throws URISyntaxError if the basic URI syntax
2427     * it bad (as parsed by the Uri class) or the Intent data within the
2428     * URI is invalid.
2429     *
2430     * @see #toUri
2431     */
2432    public static Intent parseUri(String uri, int flags) throws URISyntaxException {
2433        int i = 0;
2434        try {
2435            // Validate intent scheme for if requested.
2436            if ((flags&URI_INTENT_SCHEME) != 0) {
2437                if (!uri.startsWith("intent:")) {
2438                    Intent intent = new Intent(ACTION_VIEW);
2439                    try {
2440                        intent.setData(Uri.parse(uri));
2441                    } catch (IllegalArgumentException e) {
2442                        throw new URISyntaxException(uri, e.getMessage());
2443                    }
2444                    return intent;
2445                }
2446            }
2447
2448            // simple case
2449            i = uri.lastIndexOf("#");
2450            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2451
2452            // old format Intent URI
2453            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2454
2455            // new format
2456            Intent intent = new Intent(ACTION_VIEW);
2457
2458            // fetch data part, if present
2459            String data = i >= 0 ? uri.substring(0, i) : null;
2460            String scheme = null;
2461            i += "#Intent;".length();
2462
2463            // loop over contents of Intent, all name=value;
2464            while (!uri.startsWith("end", i)) {
2465                int eq = uri.indexOf('=', i);
2466                int semi = uri.indexOf(';', eq);
2467                String value = Uri.decode(uri.substring(eq + 1, semi));
2468
2469                // action
2470                if (uri.startsWith("action=", i)) {
2471                    intent.mAction = value;
2472                }
2473
2474                // categories
2475                else if (uri.startsWith("category=", i)) {
2476                    intent.addCategory(value);
2477                }
2478
2479                // type
2480                else if (uri.startsWith("type=", i)) {
2481                    intent.mType = value;
2482                }
2483
2484                // launch  flags
2485                else if (uri.startsWith("launchFlags=", i)) {
2486                    intent.mFlags = Integer.decode(value).intValue();
2487                }
2488
2489                // package
2490                else if (uri.startsWith("package=", i)) {
2491                    intent.mPackage = value;
2492                }
2493
2494                // component
2495                else if (uri.startsWith("component=", i)) {
2496                    intent.mComponent = ComponentName.unflattenFromString(value);
2497                }
2498
2499                // scheme
2500                else if (uri.startsWith("scheme=", i)) {
2501                    scheme = value;
2502                }
2503
2504                // extra
2505                else {
2506                    String key = Uri.decode(uri.substring(i + 2, eq));
2507                    // create Bundle if it doesn't already exist
2508                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2509                    Bundle b = intent.mExtras;
2510                    // add EXTRA
2511                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2512                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2513                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2514                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2515                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2516                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2517                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2518                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2519                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2520                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2521                }
2522
2523                // move to the next item
2524                i = semi + 1;
2525            }
2526
2527            if (data != null) {
2528                if (data.startsWith("intent:")) {
2529                    data = data.substring(7);
2530                    if (scheme != null) {
2531                        data = scheme + ':' + data;
2532                    }
2533                }
2534
2535                if (data.length() > 0) {
2536                    try {
2537                        intent.mData = Uri.parse(data);
2538                    } catch (IllegalArgumentException e) {
2539                        throw new URISyntaxException(uri, e.getMessage());
2540                    }
2541                }
2542            }
2543
2544            return intent;
2545
2546        } catch (IndexOutOfBoundsException e) {
2547            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2548        }
2549    }
2550
2551    public static Intent getIntentOld(String uri) throws URISyntaxException {
2552        Intent intent;
2553
2554        int i = uri.lastIndexOf('#');
2555        if (i >= 0) {
2556            Uri data = null;
2557            String action = null;
2558            if (i > 0) {
2559                data = Uri.parse(uri.substring(0, i));
2560            }
2561
2562            i++;
2563
2564            if (uri.regionMatches(i, "action(", 0, 7)) {
2565                i += 7;
2566                int j = uri.indexOf(')', i);
2567                action = uri.substring(i, j);
2568                i = j + 1;
2569            }
2570
2571            intent = new Intent(action, data);
2572
2573            if (uri.regionMatches(i, "categories(", 0, 11)) {
2574                i += 11;
2575                int j = uri.indexOf(')', i);
2576                while (i < j) {
2577                    int sep = uri.indexOf('!', i);
2578                    if (sep < 0) sep = j;
2579                    if (i < sep) {
2580                        intent.addCategory(uri.substring(i, sep));
2581                    }
2582                    i = sep + 1;
2583                }
2584                i = j + 1;
2585            }
2586
2587            if (uri.regionMatches(i, "type(", 0, 5)) {
2588                i += 5;
2589                int j = uri.indexOf(')', i);
2590                intent.mType = uri.substring(i, j);
2591                i = j + 1;
2592            }
2593
2594            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2595                i += 12;
2596                int j = uri.indexOf(')', i);
2597                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2598                i = j + 1;
2599            }
2600
2601            if (uri.regionMatches(i, "component(", 0, 10)) {
2602                i += 10;
2603                int j = uri.indexOf(')', i);
2604                int sep = uri.indexOf('!', i);
2605                if (sep >= 0 && sep < j) {
2606                    String pkg = uri.substring(i, sep);
2607                    String cls = uri.substring(sep + 1, j);
2608                    intent.mComponent = new ComponentName(pkg, cls);
2609                }
2610                i = j + 1;
2611            }
2612
2613            if (uri.regionMatches(i, "extras(", 0, 7)) {
2614                i += 7;
2615
2616                final int closeParen = uri.indexOf(')', i);
2617                if (closeParen == -1) throw new URISyntaxException(uri,
2618                        "EXTRA missing trailing ')'", i);
2619
2620                while (i < closeParen) {
2621                    // fetch the key value
2622                    int j = uri.indexOf('=', i);
2623                    if (j <= i + 1 || i >= closeParen) {
2624                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2625                    }
2626                    char type = uri.charAt(i);
2627                    i++;
2628                    String key = uri.substring(i, j);
2629                    i = j + 1;
2630
2631                    // get type-value
2632                    j = uri.indexOf('!', i);
2633                    if (j == -1 || j >= closeParen) j = closeParen;
2634                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2635                    String value = uri.substring(i, j);
2636                    i = j;
2637
2638                    // create Bundle if it doesn't already exist
2639                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2640
2641                    // add item to bundle
2642                    try {
2643                        switch (type) {
2644                            case 'S':
2645                                intent.mExtras.putString(key, Uri.decode(value));
2646                                break;
2647                            case 'B':
2648                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2649                                break;
2650                            case 'b':
2651                                intent.mExtras.putByte(key, Byte.parseByte(value));
2652                                break;
2653                            case 'c':
2654                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2655                                break;
2656                            case 'd':
2657                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2658                                break;
2659                            case 'f':
2660                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2661                                break;
2662                            case 'i':
2663                                intent.mExtras.putInt(key, Integer.parseInt(value));
2664                                break;
2665                            case 'l':
2666                                intent.mExtras.putLong(key, Long.parseLong(value));
2667                                break;
2668                            case 's':
2669                                intent.mExtras.putShort(key, Short.parseShort(value));
2670                                break;
2671                            default:
2672                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2673                        }
2674                    } catch (NumberFormatException e) {
2675                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2676                    }
2677
2678                    char ch = uri.charAt(i);
2679                    if (ch == ')') break;
2680                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2681                    i++;
2682                }
2683            }
2684
2685            if (intent.mAction == null) {
2686                // By default, if no action is specified, then use VIEW.
2687                intent.mAction = ACTION_VIEW;
2688            }
2689
2690        } else {
2691            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2692        }
2693
2694        return intent;
2695    }
2696
2697    /**
2698     * Retrieve the general action to be performed, such as
2699     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2700     * the information in the intent should be interpreted -- most importantly,
2701     * what to do with the data returned by {@link #getData}.
2702     *
2703     * @return The action of this intent or null if none is specified.
2704     *
2705     * @see #setAction
2706     */
2707    public String getAction() {
2708        return mAction;
2709    }
2710
2711    /**
2712     * Retrieve data this intent is operating on.  This URI specifies the name
2713     * of the data; often it uses the content: scheme, specifying data in a
2714     * content provider.  Other schemes may be handled by specific activities,
2715     * such as http: by the web browser.
2716     *
2717     * @return The URI of the data this intent is targeting or null.
2718     *
2719     * @see #getScheme
2720     * @see #setData
2721     */
2722    public Uri getData() {
2723        return mData;
2724    }
2725
2726    /**
2727     * The same as {@link #getData()}, but returns the URI as an encoded
2728     * String.
2729     */
2730    public String getDataString() {
2731        return mData != null ? mData.toString() : null;
2732    }
2733
2734    /**
2735     * Return the scheme portion of the intent's data.  If the data is null or
2736     * does not include a scheme, null is returned.  Otherwise, the scheme
2737     * prefix without the final ':' is returned, i.e. "http".
2738     *
2739     * <p>This is the same as calling getData().getScheme() (and checking for
2740     * null data).
2741     *
2742     * @return The scheme of this intent.
2743     *
2744     * @see #getData
2745     */
2746    public String getScheme() {
2747        return mData != null ? mData.getScheme() : null;
2748    }
2749
2750    /**
2751     * Retrieve any explicit MIME type included in the intent.  This is usually
2752     * null, as the type is determined by the intent data.
2753     *
2754     * @return If a type was manually set, it is returned; else null is
2755     *         returned.
2756     *
2757     * @see #resolveType(ContentResolver)
2758     * @see #setType
2759     */
2760    public String getType() {
2761        return mType;
2762    }
2763
2764    /**
2765     * Return the MIME data type of this intent.  If the type field is
2766     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2767     * the type of that data is returned.  If neither fields are set, a null is
2768     * returned.
2769     *
2770     * @return The MIME type of this intent.
2771     *
2772     * @see #getType
2773     * @see #resolveType(ContentResolver)
2774     */
2775    public String resolveType(Context context) {
2776        return resolveType(context.getContentResolver());
2777    }
2778
2779    /**
2780     * Return the MIME data type of this intent.  If the type field is
2781     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2782     * the type of that data is returned.  If neither fields are set, a null is
2783     * returned.
2784     *
2785     * @param resolver A ContentResolver that can be used to determine the MIME
2786     *                 type of the intent's data.
2787     *
2788     * @return The MIME type of this intent.
2789     *
2790     * @see #getType
2791     * @see #resolveType(Context)
2792     */
2793    public String resolveType(ContentResolver resolver) {
2794        if (mType != null) {
2795            return mType;
2796        }
2797        if (mData != null) {
2798            if ("content".equals(mData.getScheme())) {
2799                return resolver.getType(mData);
2800            }
2801        }
2802        return null;
2803    }
2804
2805    /**
2806     * Return the MIME data type of this intent, only if it will be needed for
2807     * intent resolution.  This is not generally useful for application code;
2808     * it is used by the frameworks for communicating with back-end system
2809     * services.
2810     *
2811     * @param resolver A ContentResolver that can be used to determine the MIME
2812     *                 type of the intent's data.
2813     *
2814     * @return The MIME type of this intent, or null if it is unknown or not
2815     *         needed.
2816     */
2817    public String resolveTypeIfNeeded(ContentResolver resolver) {
2818        if (mComponent != null) {
2819            return mType;
2820        }
2821        return resolveType(resolver);
2822    }
2823
2824    /**
2825     * Check if an category exists in the intent.
2826     *
2827     * @param category The category to check.
2828     *
2829     * @return boolean True if the intent contains the category, else false.
2830     *
2831     * @see #getCategories
2832     * @see #addCategory
2833     */
2834    public boolean hasCategory(String category) {
2835        return mCategories != null && mCategories.contains(category);
2836    }
2837
2838    /**
2839     * Return the set of all categories in the intent.  If there are no categories,
2840     * returns NULL.
2841     *
2842     * @return Set The set of categories you can examine.  Do not modify!
2843     *
2844     * @see #hasCategory
2845     * @see #addCategory
2846     */
2847    public Set<String> getCategories() {
2848        return mCategories;
2849    }
2850
2851    /**
2852     * Sets the ClassLoader that will be used when unmarshalling
2853     * any Parcelable values from the extras of this Intent.
2854     *
2855     * @param loader a ClassLoader, or null to use the default loader
2856     * at the time of unmarshalling.
2857     */
2858    public void setExtrasClassLoader(ClassLoader loader) {
2859        if (mExtras != null) {
2860            mExtras.setClassLoader(loader);
2861        }
2862    }
2863
2864    /**
2865     * Returns true if an extra value is associated with the given name.
2866     * @param name the extra's name
2867     * @return true if the given extra is present.
2868     */
2869    public boolean hasExtra(String name) {
2870        return mExtras != null && mExtras.containsKey(name);
2871    }
2872
2873    /**
2874     * Returns true if the Intent's extras contain a parcelled file descriptor.
2875     * @return true if the Intent contains a parcelled file descriptor.
2876     */
2877    public boolean hasFileDescriptors() {
2878        return mExtras != null && mExtras.hasFileDescriptors();
2879    }
2880
2881    /**
2882     * Retrieve extended data from the intent.
2883     *
2884     * @param name The name of the desired item.
2885     *
2886     * @return the value of an item that previously added with putExtra()
2887     * or null if none was found.
2888     *
2889     * @deprecated
2890     * @hide
2891     */
2892    @Deprecated
2893    public Object getExtra(String name) {
2894        return getExtra(name, null);
2895    }
2896
2897    /**
2898     * Retrieve extended data from the intent.
2899     *
2900     * @param name The name of the desired item.
2901     * @param defaultValue the value to be returned if no value of the desired
2902     * type is stored with the given name.
2903     *
2904     * @return the value of an item that previously added with putExtra()
2905     * or the default value if none was found.
2906     *
2907     * @see #putExtra(String, boolean)
2908     */
2909    public boolean getBooleanExtra(String name, boolean defaultValue) {
2910        return mExtras == null ? defaultValue :
2911            mExtras.getBoolean(name, defaultValue);
2912    }
2913
2914    /**
2915     * Retrieve extended data from the intent.
2916     *
2917     * @param name The name of the desired item.
2918     * @param defaultValue the value to be returned if no value of the desired
2919     * type is stored with the given name.
2920     *
2921     * @return the value of an item that previously added with putExtra()
2922     * or the default value if none was found.
2923     *
2924     * @see #putExtra(String, byte)
2925     */
2926    public byte getByteExtra(String name, byte defaultValue) {
2927        return mExtras == null ? defaultValue :
2928            mExtras.getByte(name, defaultValue);
2929    }
2930
2931    /**
2932     * Retrieve extended data from the intent.
2933     *
2934     * @param name The name of the desired item.
2935     * @param defaultValue the value to be returned if no value of the desired
2936     * type is stored with the given name.
2937     *
2938     * @return the value of an item that previously added with putExtra()
2939     * or the default value if none was found.
2940     *
2941     * @see #putExtra(String, short)
2942     */
2943    public short getShortExtra(String name, short defaultValue) {
2944        return mExtras == null ? defaultValue :
2945            mExtras.getShort(name, defaultValue);
2946    }
2947
2948    /**
2949     * Retrieve extended data from the intent.
2950     *
2951     * @param name The name of the desired item.
2952     * @param defaultValue the value to be returned if no value of the desired
2953     * type is stored with the given name.
2954     *
2955     * @return the value of an item that previously added with putExtra()
2956     * or the default value if none was found.
2957     *
2958     * @see #putExtra(String, char)
2959     */
2960    public char getCharExtra(String name, char defaultValue) {
2961        return mExtras == null ? defaultValue :
2962            mExtras.getChar(name, defaultValue);
2963    }
2964
2965    /**
2966     * Retrieve extended data from the intent.
2967     *
2968     * @param name The name of the desired item.
2969     * @param defaultValue the value to be returned if no value of the desired
2970     * type is stored with the given name.
2971     *
2972     * @return the value of an item that previously added with putExtra()
2973     * or the default value if none was found.
2974     *
2975     * @see #putExtra(String, int)
2976     */
2977    public int getIntExtra(String name, int defaultValue) {
2978        return mExtras == null ? defaultValue :
2979            mExtras.getInt(name, defaultValue);
2980    }
2981
2982    /**
2983     * Retrieve extended data from the intent.
2984     *
2985     * @param name The name of the desired item.
2986     * @param defaultValue the value to be returned if no value of the desired
2987     * type is stored with the given name.
2988     *
2989     * @return the value of an item that previously added with putExtra()
2990     * or the default value if none was found.
2991     *
2992     * @see #putExtra(String, long)
2993     */
2994    public long getLongExtra(String name, long defaultValue) {
2995        return mExtras == null ? defaultValue :
2996            mExtras.getLong(name, defaultValue);
2997    }
2998
2999    /**
3000     * Retrieve extended data from the intent.
3001     *
3002     * @param name The name of the desired item.
3003     * @param defaultValue the value to be returned if no value of the desired
3004     * type is stored with the given name.
3005     *
3006     * @return the value of an item that previously added with putExtra(),
3007     * or the default value if no such item is present
3008     *
3009     * @see #putExtra(String, float)
3010     */
3011    public float getFloatExtra(String name, float defaultValue) {
3012        return mExtras == null ? defaultValue :
3013            mExtras.getFloat(name, defaultValue);
3014    }
3015
3016    /**
3017     * Retrieve extended data from the intent.
3018     *
3019     * @param name The name of the desired item.
3020     * @param defaultValue the value to be returned if no value of the desired
3021     * type is stored with the given name.
3022     *
3023     * @return the value of an item that previously added with putExtra()
3024     * or the default value if none was found.
3025     *
3026     * @see #putExtra(String, double)
3027     */
3028    public double getDoubleExtra(String name, double defaultValue) {
3029        return mExtras == null ? defaultValue :
3030            mExtras.getDouble(name, defaultValue);
3031    }
3032
3033    /**
3034     * Retrieve extended data from the intent.
3035     *
3036     * @param name The name of the desired item.
3037     *
3038     * @return the value of an item that previously added with putExtra()
3039     * or null if no String value was found.
3040     *
3041     * @see #putExtra(String, String)
3042     */
3043    public String getStringExtra(String name) {
3044        return mExtras == null ? null : mExtras.getString(name);
3045    }
3046
3047    /**
3048     * Retrieve extended data from the intent.
3049     *
3050     * @param name The name of the desired item.
3051     *
3052     * @return the value of an item that previously added with putExtra()
3053     * or null if no CharSequence value was found.
3054     *
3055     * @see #putExtra(String, CharSequence)
3056     */
3057    public CharSequence getCharSequenceExtra(String name) {
3058        return mExtras == null ? null : mExtras.getCharSequence(name);
3059    }
3060
3061    /**
3062     * Retrieve extended data from the intent.
3063     *
3064     * @param name The name of the desired item.
3065     *
3066     * @return the value of an item that previously added with putExtra()
3067     * or null if no Parcelable value was found.
3068     *
3069     * @see #putExtra(String, Parcelable)
3070     */
3071    public <T extends Parcelable> T getParcelableExtra(String name) {
3072        return mExtras == null ? null : mExtras.<T>getParcelable(name);
3073    }
3074
3075    /**
3076     * Retrieve extended data from the intent.
3077     *
3078     * @param name The name of the desired item.
3079     *
3080     * @return the value of an item that previously added with putExtra()
3081     * or null if no Parcelable[] value was found.
3082     *
3083     * @see #putExtra(String, Parcelable[])
3084     */
3085    public Parcelable[] getParcelableArrayExtra(String name) {
3086        return mExtras == null ? null : mExtras.getParcelableArray(name);
3087    }
3088
3089    /**
3090     * Retrieve extended data from the intent.
3091     *
3092     * @param name The name of the desired item.
3093     *
3094     * @return the value of an item that previously added with putExtra()
3095     * or null if no ArrayList<Parcelable> value was found.
3096     *
3097     * @see #putParcelableArrayListExtra(String, ArrayList)
3098     */
3099    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
3100        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
3101    }
3102
3103    /**
3104     * Retrieve extended data from the intent.
3105     *
3106     * @param name The name of the desired item.
3107     *
3108     * @return the value of an item that previously added with putExtra()
3109     * or null if no Serializable value was found.
3110     *
3111     * @see #putExtra(String, Serializable)
3112     */
3113    public Serializable getSerializableExtra(String name) {
3114        return mExtras == null ? null : mExtras.getSerializable(name);
3115    }
3116
3117    /**
3118     * Retrieve extended data from the intent.
3119     *
3120     * @param name The name of the desired item.
3121     *
3122     * @return the value of an item that previously added with putExtra()
3123     * or null if no ArrayList<Integer> value was found.
3124     *
3125     * @see #putIntegerArrayListExtra(String, ArrayList)
3126     */
3127    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
3128        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
3129    }
3130
3131    /**
3132     * Retrieve extended data from the intent.
3133     *
3134     * @param name The name of the desired item.
3135     *
3136     * @return the value of an item that previously added with putExtra()
3137     * or null if no ArrayList<String> value was found.
3138     *
3139     * @see #putStringArrayListExtra(String, ArrayList)
3140     */
3141    public ArrayList<String> getStringArrayListExtra(String name) {
3142        return mExtras == null ? null : mExtras.getStringArrayList(name);
3143    }
3144
3145    /**
3146     * Retrieve extended data from the intent.
3147     *
3148     * @param name The name of the desired item.
3149     *
3150     * @return the value of an item that previously added with putExtra()
3151     * or null if no boolean array value was found.
3152     *
3153     * @see #putExtra(String, boolean[])
3154     */
3155    public boolean[] getBooleanArrayExtra(String name) {
3156        return mExtras == null ? null : mExtras.getBooleanArray(name);
3157    }
3158
3159    /**
3160     * Retrieve extended data from the intent.
3161     *
3162     * @param name The name of the desired item.
3163     *
3164     * @return the value of an item that previously added with putExtra()
3165     * or null if no byte array value was found.
3166     *
3167     * @see #putExtra(String, byte[])
3168     */
3169    public byte[] getByteArrayExtra(String name) {
3170        return mExtras == null ? null : mExtras.getByteArray(name);
3171    }
3172
3173    /**
3174     * Retrieve extended data from the intent.
3175     *
3176     * @param name The name of the desired item.
3177     *
3178     * @return the value of an item that previously added with putExtra()
3179     * or null if no short array value was found.
3180     *
3181     * @see #putExtra(String, short[])
3182     */
3183    public short[] getShortArrayExtra(String name) {
3184        return mExtras == null ? null : mExtras.getShortArray(name);
3185    }
3186
3187    /**
3188     * Retrieve extended data from the intent.
3189     *
3190     * @param name The name of the desired item.
3191     *
3192     * @return the value of an item that previously added with putExtra()
3193     * or null if no char array value was found.
3194     *
3195     * @see #putExtra(String, char[])
3196     */
3197    public char[] getCharArrayExtra(String name) {
3198        return mExtras == null ? null : mExtras.getCharArray(name);
3199    }
3200
3201    /**
3202     * Retrieve extended data from the intent.
3203     *
3204     * @param name The name of the desired item.
3205     *
3206     * @return the value of an item that previously added with putExtra()
3207     * or null if no int array value was found.
3208     *
3209     * @see #putExtra(String, int[])
3210     */
3211    public int[] getIntArrayExtra(String name) {
3212        return mExtras == null ? null : mExtras.getIntArray(name);
3213    }
3214
3215    /**
3216     * Retrieve extended data from the intent.
3217     *
3218     * @param name The name of the desired item.
3219     *
3220     * @return the value of an item that previously added with putExtra()
3221     * or null if no long array value was found.
3222     *
3223     * @see #putExtra(String, long[])
3224     */
3225    public long[] getLongArrayExtra(String name) {
3226        return mExtras == null ? null : mExtras.getLongArray(name);
3227    }
3228
3229    /**
3230     * Retrieve extended data from the intent.
3231     *
3232     * @param name The name of the desired item.
3233     *
3234     * @return the value of an item that previously added with putExtra()
3235     * or null if no float array value was found.
3236     *
3237     * @see #putExtra(String, float[])
3238     */
3239    public float[] getFloatArrayExtra(String name) {
3240        return mExtras == null ? null : mExtras.getFloatArray(name);
3241    }
3242
3243    /**
3244     * Retrieve extended data from the intent.
3245     *
3246     * @param name The name of the desired item.
3247     *
3248     * @return the value of an item that previously added with putExtra()
3249     * or null if no double array value was found.
3250     *
3251     * @see #putExtra(String, double[])
3252     */
3253    public double[] getDoubleArrayExtra(String name) {
3254        return mExtras == null ? null : mExtras.getDoubleArray(name);
3255    }
3256
3257    /**
3258     * Retrieve extended data from the intent.
3259     *
3260     * @param name The name of the desired item.
3261     *
3262     * @return the value of an item that previously added with putExtra()
3263     * or null if no String array value was found.
3264     *
3265     * @see #putExtra(String, String[])
3266     */
3267    public String[] getStringArrayExtra(String name) {
3268        return mExtras == null ? null : mExtras.getStringArray(name);
3269    }
3270
3271    /**
3272     * Retrieve extended data from the intent.
3273     *
3274     * @param name The name of the desired item.
3275     *
3276     * @return the value of an item that previously added with putExtra()
3277     * or null if no Bundle value was found.
3278     *
3279     * @see #putExtra(String, Bundle)
3280     */
3281    public Bundle getBundleExtra(String name) {
3282        return mExtras == null ? null : mExtras.getBundle(name);
3283    }
3284
3285    /**
3286     * Retrieve extended data from the intent.
3287     *
3288     * @param name The name of the desired item.
3289     *
3290     * @return the value of an item that previously added with putExtra()
3291     * or null if no IBinder value was found.
3292     *
3293     * @see #putExtra(String, IBinder)
3294     *
3295     * @deprecated
3296     * @hide
3297     */
3298    @Deprecated
3299    public IBinder getIBinderExtra(String name) {
3300        return mExtras == null ? null : mExtras.getIBinder(name);
3301    }
3302
3303    /**
3304     * Retrieve extended data from the intent.
3305     *
3306     * @param name The name of the desired item.
3307     * @param defaultValue The default value to return in case no item is
3308     * associated with the key 'name'
3309     *
3310     * @return the value of an item that previously added with putExtra()
3311     * or defaultValue if none was found.
3312     *
3313     * @see #putExtra
3314     *
3315     * @deprecated
3316     * @hide
3317     */
3318    @Deprecated
3319    public Object getExtra(String name, Object defaultValue) {
3320        Object result = defaultValue;
3321        if (mExtras != null) {
3322            Object result2 = mExtras.get(name);
3323            if (result2 != null) {
3324                result = result2;
3325            }
3326        }
3327
3328        return result;
3329    }
3330
3331    /**
3332     * Retrieves a map of extended data from the intent.
3333     *
3334     * @return the map of all extras previously added with putExtra(),
3335     * or null if none have been added.
3336     */
3337    public Bundle getExtras() {
3338        return (mExtras != null)
3339                ? new Bundle(mExtras)
3340                : null;
3341    }
3342
3343    /**
3344     * Retrieve any special flags associated with this intent.  You will
3345     * normally just set them with {@link #setFlags} and let the system
3346     * take the appropriate action with them.
3347     *
3348     * @return int The currently set flags.
3349     *
3350     * @see #setFlags
3351     */
3352    public int getFlags() {
3353        return mFlags;
3354    }
3355
3356    /**
3357     * Retrieve the application package name this Intent is limited to.  When
3358     * resolving an Intent, if non-null this limits the resolution to only
3359     * components in the given application package.
3360     *
3361     * @return The name of the application package for the Intent.
3362     *
3363     * @see #resolveActivity
3364     * @see #setPackage
3365     */
3366    public String getPackage() {
3367        return mPackage;
3368    }
3369
3370    /**
3371     * Retrieve the concrete component associated with the intent.  When receiving
3372     * an intent, this is the component that was found to best handle it (that is,
3373     * yourself) and will always be non-null; in all other cases it will be
3374     * null unless explicitly set.
3375     *
3376     * @return The name of the application component to handle the intent.
3377     *
3378     * @see #resolveActivity
3379     * @see #setComponent
3380     */
3381    public ComponentName getComponent() {
3382        return mComponent;
3383    }
3384
3385    /**
3386     * Return the Activity component that should be used to handle this intent.
3387     * The appropriate component is determined based on the information in the
3388     * intent, evaluated as follows:
3389     *
3390     * <p>If {@link #getComponent} returns an explicit class, that is returned
3391     * without any further consideration.
3392     *
3393     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
3394     * category to be considered.
3395     *
3396     * <p>If {@link #getAction} is non-NULL, the activity must handle this
3397     * action.
3398     *
3399     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
3400     * this type.
3401     *
3402     * <p>If {@link #addCategory} has added any categories, the activity must
3403     * handle ALL of the categories specified.
3404     *
3405     * <p>If {@link #getPackage} is non-NULL, only activity components in
3406     * that application package will be considered.
3407     *
3408     * <p>If there are no activities that satisfy all of these conditions, a
3409     * null string is returned.
3410     *
3411     * <p>If multiple activities are found to satisfy the intent, the one with
3412     * the highest priority will be used.  If there are multiple activities
3413     * with the same priority, the system will either pick the best activity
3414     * based on user preference, or resolve to a system class that will allow
3415     * the user to pick an activity and forward from there.
3416     *
3417     * <p>This method is implemented simply by calling
3418     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
3419     * true.</p>
3420     * <p> This API is called for you as part of starting an activity from an
3421     * intent.  You do not normally need to call it yourself.</p>
3422     *
3423     * @param pm The package manager with which to resolve the Intent.
3424     *
3425     * @return Name of the component implementing an activity that can
3426     *         display the intent.
3427     *
3428     * @see #setComponent
3429     * @see #getComponent
3430     * @see #resolveActivityInfo
3431     */
3432    public ComponentName resolveActivity(PackageManager pm) {
3433        if (mComponent != null) {
3434            return mComponent;
3435        }
3436
3437        ResolveInfo info = pm.resolveActivity(
3438            this, PackageManager.MATCH_DEFAULT_ONLY);
3439        if (info != null) {
3440            return new ComponentName(
3441                    info.activityInfo.applicationInfo.packageName,
3442                    info.activityInfo.name);
3443        }
3444
3445        return null;
3446    }
3447
3448    /**
3449     * Resolve the Intent into an {@link ActivityInfo}
3450     * describing the activity that should execute the intent.  Resolution
3451     * follows the same rules as described for {@link #resolveActivity}, but
3452     * you get back the completely information about the resolved activity
3453     * instead of just its class name.
3454     *
3455     * @param pm The package manager with which to resolve the Intent.
3456     * @param flags Addition information to retrieve as per
3457     * {@link PackageManager#getActivityInfo(ComponentName, int)
3458     * PackageManager.getActivityInfo()}.
3459     *
3460     * @return PackageManager.ActivityInfo
3461     *
3462     * @see #resolveActivity
3463     */
3464    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
3465        ActivityInfo ai = null;
3466        if (mComponent != null) {
3467            try {
3468                ai = pm.getActivityInfo(mComponent, flags);
3469            } catch (PackageManager.NameNotFoundException e) {
3470                // ignore
3471            }
3472        } else {
3473            ResolveInfo info = pm.resolveActivity(
3474                this, PackageManager.MATCH_DEFAULT_ONLY);
3475            if (info != null) {
3476                ai = info.activityInfo;
3477            }
3478        }
3479
3480        return ai;
3481    }
3482
3483    /**
3484     * Set the general action to be performed.
3485     *
3486     * @param action An action name, such as ACTION_VIEW.  Application-specific
3487     *               actions should be prefixed with the vendor's package name.
3488     *
3489     * @return Returns the same Intent object, for chaining multiple calls
3490     * into a single statement.
3491     *
3492     * @see #getAction
3493     */
3494    public Intent setAction(String action) {
3495        mAction = action;
3496        return this;
3497    }
3498
3499    /**
3500     * Set the data this intent is operating on.  This method automatically
3501     * clears any type that was previously set by {@link #setType}.
3502     *
3503     * <p><em>Note: scheme and host name matching in the Android framework is
3504     * case-sensitive, unlike the formal RFC.  As a result,
3505     * you should always ensure that you write your Uri with these elements
3506     * using lower case letters, and normalize any Uris you receive from
3507     * outside of Android to ensure the scheme and host is lower case.</em></p>
3508     *
3509     * @param data The URI of the data this intent is now targeting.
3510     *
3511     * @return Returns the same Intent object, for chaining multiple calls
3512     * into a single statement.
3513     *
3514     * @see #getData
3515     * @see #setType
3516     * @see #setDataAndType
3517     */
3518    public Intent setData(Uri data) {
3519        mData = data;
3520        mType = null;
3521        return this;
3522    }
3523
3524    /**
3525     * Set an explicit MIME data type.  This is used to create intents that
3526     * only specify a type and not data, for example to indicate the type of
3527     * data to return.  This method automatically clears any data that was
3528     * previously set by {@link #setData}.
3529     *
3530     * <p><em>Note: MIME type matching in the Android framework is
3531     * case-sensitive, unlike formal RFC MIME types.  As a result,
3532     * you should always write your MIME types with lower case letters,
3533     * and any MIME types you receive from outside of Android should be
3534     * converted to lower case before supplying them here.</em></p>
3535     *
3536     * @param type The MIME type of the data being handled by this intent.
3537     *
3538     * @return Returns the same Intent object, for chaining multiple calls
3539     * into a single statement.
3540     *
3541     * @see #getType
3542     * @see #setData
3543     * @see #setDataAndType
3544     */
3545    public Intent setType(String type) {
3546        mData = null;
3547        mType = type;
3548        return this;
3549    }
3550
3551    /**
3552     * (Usually optional) Set the data for the intent along with an explicit
3553     * MIME data type.  This method should very rarely be used -- it allows you
3554     * to override the MIME type that would ordinarily be inferred from the
3555     * data with your own type given here.
3556     *
3557     * <p><em>Note: MIME type, Uri scheme, and host name matching in the
3558     * Android framework is case-sensitive, unlike the formal RFC definitions.
3559     * As a result, you should always write these elements with lower case letters,
3560     * and normalize any MIME types or Uris you receive from
3561     * outside of Android to ensure these elements are lower case before
3562     * supplying them here.</em></p>
3563     *
3564     * @param data The URI of the data this intent is now targeting.
3565     * @param type The MIME type of the data being handled by this intent.
3566     *
3567     * @return Returns the same Intent object, for chaining multiple calls
3568     * into a single statement.
3569     *
3570     * @see #setData
3571     * @see #setType
3572     */
3573    public Intent setDataAndType(Uri data, String type) {
3574        mData = data;
3575        mType = type;
3576        return this;
3577    }
3578
3579    /**
3580     * Add a new category to the intent.  Categories provide additional detail
3581     * about the action the intent is perform.  When resolving an intent, only
3582     * activities that provide <em>all</em> of the requested categories will be
3583     * used.
3584     *
3585     * @param category The desired category.  This can be either one of the
3586     *               predefined Intent categories, or a custom category in your own
3587     *               namespace.
3588     *
3589     * @return Returns the same Intent object, for chaining multiple calls
3590     * into a single statement.
3591     *
3592     * @see #hasCategory
3593     * @see #removeCategory
3594     */
3595    public Intent addCategory(String category) {
3596        if (mCategories == null) {
3597            mCategories = new HashSet<String>();
3598        }
3599        mCategories.add(category);
3600        return this;
3601    }
3602
3603    /**
3604     * Remove an category from an intent.
3605     *
3606     * @param category The category to remove.
3607     *
3608     * @see #addCategory
3609     */
3610    public void removeCategory(String category) {
3611        if (mCategories != null) {
3612            mCategories.remove(category);
3613            if (mCategories.size() == 0) {
3614                mCategories = null;
3615            }
3616        }
3617    }
3618
3619    /**
3620     * Add extended data to the intent.  The name must include a package
3621     * prefix, for example the app com.android.contacts would use names
3622     * like "com.android.contacts.ShowAll".
3623     *
3624     * @param name The name of the extra data, with package prefix.
3625     * @param value The boolean data value.
3626     *
3627     * @return Returns the same Intent object, for chaining multiple calls
3628     * into a single statement.
3629     *
3630     * @see #putExtras
3631     * @see #removeExtra
3632     * @see #getBooleanExtra(String, boolean)
3633     */
3634    public Intent putExtra(String name, boolean value) {
3635        if (mExtras == null) {
3636            mExtras = new Bundle();
3637        }
3638        mExtras.putBoolean(name, value);
3639        return this;
3640    }
3641
3642    /**
3643     * Add extended data to the intent.  The name must include a package
3644     * prefix, for example the app com.android.contacts would use names
3645     * like "com.android.contacts.ShowAll".
3646     *
3647     * @param name The name of the extra data, with package prefix.
3648     * @param value The byte data value.
3649     *
3650     * @return Returns the same Intent object, for chaining multiple calls
3651     * into a single statement.
3652     *
3653     * @see #putExtras
3654     * @see #removeExtra
3655     * @see #getByteExtra(String, byte)
3656     */
3657    public Intent putExtra(String name, byte value) {
3658        if (mExtras == null) {
3659            mExtras = new Bundle();
3660        }
3661        mExtras.putByte(name, value);
3662        return this;
3663    }
3664
3665    /**
3666     * Add extended data to the intent.  The name must include a package
3667     * prefix, for example the app com.android.contacts would use names
3668     * like "com.android.contacts.ShowAll".
3669     *
3670     * @param name The name of the extra data, with package prefix.
3671     * @param value The char data value.
3672     *
3673     * @return Returns the same Intent object, for chaining multiple calls
3674     * into a single statement.
3675     *
3676     * @see #putExtras
3677     * @see #removeExtra
3678     * @see #getCharExtra(String, char)
3679     */
3680    public Intent putExtra(String name, char value) {
3681        if (mExtras == null) {
3682            mExtras = new Bundle();
3683        }
3684        mExtras.putChar(name, value);
3685        return this;
3686    }
3687
3688    /**
3689     * Add extended data to the intent.  The name must include a package
3690     * prefix, for example the app com.android.contacts would use names
3691     * like "com.android.contacts.ShowAll".
3692     *
3693     * @param name The name of the extra data, with package prefix.
3694     * @param value The short data value.
3695     *
3696     * @return Returns the same Intent object, for chaining multiple calls
3697     * into a single statement.
3698     *
3699     * @see #putExtras
3700     * @see #removeExtra
3701     * @see #getShortExtra(String, short)
3702     */
3703    public Intent putExtra(String name, short value) {
3704        if (mExtras == null) {
3705            mExtras = new Bundle();
3706        }
3707        mExtras.putShort(name, value);
3708        return this;
3709    }
3710
3711    /**
3712     * Add extended data to the intent.  The name must include a package
3713     * prefix, for example the app com.android.contacts would use names
3714     * like "com.android.contacts.ShowAll".
3715     *
3716     * @param name The name of the extra data, with package prefix.
3717     * @param value The integer data value.
3718     *
3719     * @return Returns the same Intent object, for chaining multiple calls
3720     * into a single statement.
3721     *
3722     * @see #putExtras
3723     * @see #removeExtra
3724     * @see #getIntExtra(String, int)
3725     */
3726    public Intent putExtra(String name, int value) {
3727        if (mExtras == null) {
3728            mExtras = new Bundle();
3729        }
3730        mExtras.putInt(name, value);
3731        return this;
3732    }
3733
3734    /**
3735     * Add extended data to the intent.  The name must include a package
3736     * prefix, for example the app com.android.contacts would use names
3737     * like "com.android.contacts.ShowAll".
3738     *
3739     * @param name The name of the extra data, with package prefix.
3740     * @param value The long data value.
3741     *
3742     * @return Returns the same Intent object, for chaining multiple calls
3743     * into a single statement.
3744     *
3745     * @see #putExtras
3746     * @see #removeExtra
3747     * @see #getLongExtra(String, long)
3748     */
3749    public Intent putExtra(String name, long value) {
3750        if (mExtras == null) {
3751            mExtras = new Bundle();
3752        }
3753        mExtras.putLong(name, value);
3754        return this;
3755    }
3756
3757    /**
3758     * Add extended data to the intent.  The name must include a package
3759     * prefix, for example the app com.android.contacts would use names
3760     * like "com.android.contacts.ShowAll".
3761     *
3762     * @param name The name of the extra data, with package prefix.
3763     * @param value The float data value.
3764     *
3765     * @return Returns the same Intent object, for chaining multiple calls
3766     * into a single statement.
3767     *
3768     * @see #putExtras
3769     * @see #removeExtra
3770     * @see #getFloatExtra(String, float)
3771     */
3772    public Intent putExtra(String name, float value) {
3773        if (mExtras == null) {
3774            mExtras = new Bundle();
3775        }
3776        mExtras.putFloat(name, value);
3777        return this;
3778    }
3779
3780    /**
3781     * Add extended data to the intent.  The name must include a package
3782     * prefix, for example the app com.android.contacts would use names
3783     * like "com.android.contacts.ShowAll".
3784     *
3785     * @param name The name of the extra data, with package prefix.
3786     * @param value The double data value.
3787     *
3788     * @return Returns the same Intent object, for chaining multiple calls
3789     * into a single statement.
3790     *
3791     * @see #putExtras
3792     * @see #removeExtra
3793     * @see #getDoubleExtra(String, double)
3794     */
3795    public Intent putExtra(String name, double value) {
3796        if (mExtras == null) {
3797            mExtras = new Bundle();
3798        }
3799        mExtras.putDouble(name, value);
3800        return this;
3801    }
3802
3803    /**
3804     * Add extended data to the intent.  The name must include a package
3805     * prefix, for example the app com.android.contacts would use names
3806     * like "com.android.contacts.ShowAll".
3807     *
3808     * @param name The name of the extra data, with package prefix.
3809     * @param value The String data value.
3810     *
3811     * @return Returns the same Intent object, for chaining multiple calls
3812     * into a single statement.
3813     *
3814     * @see #putExtras
3815     * @see #removeExtra
3816     * @see #getStringExtra(String)
3817     */
3818    public Intent putExtra(String name, String value) {
3819        if (mExtras == null) {
3820            mExtras = new Bundle();
3821        }
3822        mExtras.putString(name, value);
3823        return this;
3824    }
3825
3826    /**
3827     * Add extended data to the intent.  The name must include a package
3828     * prefix, for example the app com.android.contacts would use names
3829     * like "com.android.contacts.ShowAll".
3830     *
3831     * @param name The name of the extra data, with package prefix.
3832     * @param value The CharSequence data value.
3833     *
3834     * @return Returns the same Intent object, for chaining multiple calls
3835     * into a single statement.
3836     *
3837     * @see #putExtras
3838     * @see #removeExtra
3839     * @see #getCharSequenceExtra(String)
3840     */
3841    public Intent putExtra(String name, CharSequence value) {
3842        if (mExtras == null) {
3843            mExtras = new Bundle();
3844        }
3845        mExtras.putCharSequence(name, value);
3846        return this;
3847    }
3848
3849    /**
3850     * Add extended data to the intent.  The name must include a package
3851     * prefix, for example the app com.android.contacts would use names
3852     * like "com.android.contacts.ShowAll".
3853     *
3854     * @param name The name of the extra data, with package prefix.
3855     * @param value The Parcelable data value.
3856     *
3857     * @return Returns the same Intent object, for chaining multiple calls
3858     * into a single statement.
3859     *
3860     * @see #putExtras
3861     * @see #removeExtra
3862     * @see #getParcelableExtra(String)
3863     */
3864    public Intent putExtra(String name, Parcelable value) {
3865        if (mExtras == null) {
3866            mExtras = new Bundle();
3867        }
3868        mExtras.putParcelable(name, value);
3869        return this;
3870    }
3871
3872    /**
3873     * Add extended data to the intent.  The name must include a package
3874     * prefix, for example the app com.android.contacts would use names
3875     * like "com.android.contacts.ShowAll".
3876     *
3877     * @param name The name of the extra data, with package prefix.
3878     * @param value The Parcelable[] data value.
3879     *
3880     * @return Returns the same Intent object, for chaining multiple calls
3881     * into a single statement.
3882     *
3883     * @see #putExtras
3884     * @see #removeExtra
3885     * @see #getParcelableArrayExtra(String)
3886     */
3887    public Intent putExtra(String name, Parcelable[] value) {
3888        if (mExtras == null) {
3889            mExtras = new Bundle();
3890        }
3891        mExtras.putParcelableArray(name, value);
3892        return this;
3893    }
3894
3895    /**
3896     * Add extended data to the intent.  The name must include a package
3897     * prefix, for example the app com.android.contacts would use names
3898     * like "com.android.contacts.ShowAll".
3899     *
3900     * @param name The name of the extra data, with package prefix.
3901     * @param value The ArrayList<Parcelable> data value.
3902     *
3903     * @return Returns the same Intent object, for chaining multiple calls
3904     * into a single statement.
3905     *
3906     * @see #putExtras
3907     * @see #removeExtra
3908     * @see #getParcelableArrayListExtra(String)
3909     */
3910    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3911        if (mExtras == null) {
3912            mExtras = new Bundle();
3913        }
3914        mExtras.putParcelableArrayList(name, value);
3915        return this;
3916    }
3917
3918    /**
3919     * Add extended data to the intent.  The name must include a package
3920     * prefix, for example the app com.android.contacts would use names
3921     * like "com.android.contacts.ShowAll".
3922     *
3923     * @param name The name of the extra data, with package prefix.
3924     * @param value The ArrayList<Integer> data value.
3925     *
3926     * @return Returns the same Intent object, for chaining multiple calls
3927     * into a single statement.
3928     *
3929     * @see #putExtras
3930     * @see #removeExtra
3931     * @see #getIntegerArrayListExtra(String)
3932     */
3933    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3934        if (mExtras == null) {
3935            mExtras = new Bundle();
3936        }
3937        mExtras.putIntegerArrayList(name, value);
3938        return this;
3939    }
3940
3941    /**
3942     * Add extended data to the intent.  The name must include a package
3943     * prefix, for example the app com.android.contacts would use names
3944     * like "com.android.contacts.ShowAll".
3945     *
3946     * @param name The name of the extra data, with package prefix.
3947     * @param value The ArrayList<String> data value.
3948     *
3949     * @return Returns the same Intent object, for chaining multiple calls
3950     * into a single statement.
3951     *
3952     * @see #putExtras
3953     * @see #removeExtra
3954     * @see #getStringArrayListExtra(String)
3955     */
3956    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3957        if (mExtras == null) {
3958            mExtras = new Bundle();
3959        }
3960        mExtras.putStringArrayList(name, value);
3961        return this;
3962    }
3963
3964    /**
3965     * Add extended data to the intent.  The name must include a package
3966     * prefix, for example the app com.android.contacts would use names
3967     * like "com.android.contacts.ShowAll".
3968     *
3969     * @param name The name of the extra data, with package prefix.
3970     * @param value The Serializable data value.
3971     *
3972     * @return Returns the same Intent object, for chaining multiple calls
3973     * into a single statement.
3974     *
3975     * @see #putExtras
3976     * @see #removeExtra
3977     * @see #getSerializableExtra(String)
3978     */
3979    public Intent putExtra(String name, Serializable value) {
3980        if (mExtras == null) {
3981            mExtras = new Bundle();
3982        }
3983        mExtras.putSerializable(name, value);
3984        return this;
3985    }
3986
3987    /**
3988     * Add extended data to the intent.  The name must include a package
3989     * prefix, for example the app com.android.contacts would use names
3990     * like "com.android.contacts.ShowAll".
3991     *
3992     * @param name The name of the extra data, with package prefix.
3993     * @param value The boolean array data value.
3994     *
3995     * @return Returns the same Intent object, for chaining multiple calls
3996     * into a single statement.
3997     *
3998     * @see #putExtras
3999     * @see #removeExtra
4000     * @see #getBooleanArrayExtra(String)
4001     */
4002    public Intent putExtra(String name, boolean[] value) {
4003        if (mExtras == null) {
4004            mExtras = new Bundle();
4005        }
4006        mExtras.putBooleanArray(name, value);
4007        return this;
4008    }
4009
4010    /**
4011     * Add extended data to the intent.  The name must include a package
4012     * prefix, for example the app com.android.contacts would use names
4013     * like "com.android.contacts.ShowAll".
4014     *
4015     * @param name The name of the extra data, with package prefix.
4016     * @param value The byte array data value.
4017     *
4018     * @return Returns the same Intent object, for chaining multiple calls
4019     * into a single statement.
4020     *
4021     * @see #putExtras
4022     * @see #removeExtra
4023     * @see #getByteArrayExtra(String)
4024     */
4025    public Intent putExtra(String name, byte[] value) {
4026        if (mExtras == null) {
4027            mExtras = new Bundle();
4028        }
4029        mExtras.putByteArray(name, value);
4030        return this;
4031    }
4032
4033    /**
4034     * Add extended data to the intent.  The name must include a package
4035     * prefix, for example the app com.android.contacts would use names
4036     * like "com.android.contacts.ShowAll".
4037     *
4038     * @param name The name of the extra data, with package prefix.
4039     * @param value The short array data value.
4040     *
4041     * @return Returns the same Intent object, for chaining multiple calls
4042     * into a single statement.
4043     *
4044     * @see #putExtras
4045     * @see #removeExtra
4046     * @see #getShortArrayExtra(String)
4047     */
4048    public Intent putExtra(String name, short[] value) {
4049        if (mExtras == null) {
4050            mExtras = new Bundle();
4051        }
4052        mExtras.putShortArray(name, value);
4053        return this;
4054    }
4055
4056    /**
4057     * Add extended data to the intent.  The name must include a package
4058     * prefix, for example the app com.android.contacts would use names
4059     * like "com.android.contacts.ShowAll".
4060     *
4061     * @param name The name of the extra data, with package prefix.
4062     * @param value The char array data value.
4063     *
4064     * @return Returns the same Intent object, for chaining multiple calls
4065     * into a single statement.
4066     *
4067     * @see #putExtras
4068     * @see #removeExtra
4069     * @see #getCharArrayExtra(String)
4070     */
4071    public Intent putExtra(String name, char[] value) {
4072        if (mExtras == null) {
4073            mExtras = new Bundle();
4074        }
4075        mExtras.putCharArray(name, value);
4076        return this;
4077    }
4078
4079    /**
4080     * Add extended data to the intent.  The name must include a package
4081     * prefix, for example the app com.android.contacts would use names
4082     * like "com.android.contacts.ShowAll".
4083     *
4084     * @param name The name of the extra data, with package prefix.
4085     * @param value The int array data value.
4086     *
4087     * @return Returns the same Intent object, for chaining multiple calls
4088     * into a single statement.
4089     *
4090     * @see #putExtras
4091     * @see #removeExtra
4092     * @see #getIntArrayExtra(String)
4093     */
4094    public Intent putExtra(String name, int[] value) {
4095        if (mExtras == null) {
4096            mExtras = new Bundle();
4097        }
4098        mExtras.putIntArray(name, value);
4099        return this;
4100    }
4101
4102    /**
4103     * Add extended data to the intent.  The name must include a package
4104     * prefix, for example the app com.android.contacts would use names
4105     * like "com.android.contacts.ShowAll".
4106     *
4107     * @param name The name of the extra data, with package prefix.
4108     * @param value The byte array data value.
4109     *
4110     * @return Returns the same Intent object, for chaining multiple calls
4111     * into a single statement.
4112     *
4113     * @see #putExtras
4114     * @see #removeExtra
4115     * @see #getLongArrayExtra(String)
4116     */
4117    public Intent putExtra(String name, long[] value) {
4118        if (mExtras == null) {
4119            mExtras = new Bundle();
4120        }
4121        mExtras.putLongArray(name, value);
4122        return this;
4123    }
4124
4125    /**
4126     * Add extended data to the intent.  The name must include a package
4127     * prefix, for example the app com.android.contacts would use names
4128     * like "com.android.contacts.ShowAll".
4129     *
4130     * @param name The name of the extra data, with package prefix.
4131     * @param value The float array data value.
4132     *
4133     * @return Returns the same Intent object, for chaining multiple calls
4134     * into a single statement.
4135     *
4136     * @see #putExtras
4137     * @see #removeExtra
4138     * @see #getFloatArrayExtra(String)
4139     */
4140    public Intent putExtra(String name, float[] value) {
4141        if (mExtras == null) {
4142            mExtras = new Bundle();
4143        }
4144        mExtras.putFloatArray(name, value);
4145        return this;
4146    }
4147
4148    /**
4149     * Add extended data to the intent.  The name must include a package
4150     * prefix, for example the app com.android.contacts would use names
4151     * like "com.android.contacts.ShowAll".
4152     *
4153     * @param name The name of the extra data, with package prefix.
4154     * @param value The double array data value.
4155     *
4156     * @return Returns the same Intent object, for chaining multiple calls
4157     * into a single statement.
4158     *
4159     * @see #putExtras
4160     * @see #removeExtra
4161     * @see #getDoubleArrayExtra(String)
4162     */
4163    public Intent putExtra(String name, double[] value) {
4164        if (mExtras == null) {
4165            mExtras = new Bundle();
4166        }
4167        mExtras.putDoubleArray(name, value);
4168        return this;
4169    }
4170
4171    /**
4172     * Add extended data to the intent.  The name must include a package
4173     * prefix, for example the app com.android.contacts would use names
4174     * like "com.android.contacts.ShowAll".
4175     *
4176     * @param name The name of the extra data, with package prefix.
4177     * @param value The String array data value.
4178     *
4179     * @return Returns the same Intent object, for chaining multiple calls
4180     * into a single statement.
4181     *
4182     * @see #putExtras
4183     * @see #removeExtra
4184     * @see #getStringArrayExtra(String)
4185     */
4186    public Intent putExtra(String name, String[] value) {
4187        if (mExtras == null) {
4188            mExtras = new Bundle();
4189        }
4190        mExtras.putStringArray(name, value);
4191        return this;
4192    }
4193
4194    /**
4195     * Add extended data to the intent.  The name must include a package
4196     * prefix, for example the app com.android.contacts would use names
4197     * like "com.android.contacts.ShowAll".
4198     *
4199     * @param name The name of the extra data, with package prefix.
4200     * @param value The Bundle data value.
4201     *
4202     * @return Returns the same Intent object, for chaining multiple calls
4203     * into a single statement.
4204     *
4205     * @see #putExtras
4206     * @see #removeExtra
4207     * @see #getBundleExtra(String)
4208     */
4209    public Intent putExtra(String name, Bundle value) {
4210        if (mExtras == null) {
4211            mExtras = new Bundle();
4212        }
4213        mExtras.putBundle(name, value);
4214        return this;
4215    }
4216
4217    /**
4218     * Add extended data to the intent.  The name must include a package
4219     * prefix, for example the app com.android.contacts would use names
4220     * like "com.android.contacts.ShowAll".
4221     *
4222     * @param name The name of the extra data, with package prefix.
4223     * @param value The IBinder data value.
4224     *
4225     * @return Returns the same Intent object, for chaining multiple calls
4226     * into a single statement.
4227     *
4228     * @see #putExtras
4229     * @see #removeExtra
4230     * @see #getIBinderExtra(String)
4231     *
4232     * @deprecated
4233     * @hide
4234     */
4235    @Deprecated
4236    public Intent putExtra(String name, IBinder value) {
4237        if (mExtras == null) {
4238            mExtras = new Bundle();
4239        }
4240        mExtras.putIBinder(name, value);
4241        return this;
4242    }
4243
4244    /**
4245     * Copy all extras in 'src' in to this intent.
4246     *
4247     * @param src Contains the extras to copy.
4248     *
4249     * @see #putExtra
4250     */
4251    public Intent putExtras(Intent src) {
4252        if (src.mExtras != null) {
4253            if (mExtras == null) {
4254                mExtras = new Bundle(src.mExtras);
4255            } else {
4256                mExtras.putAll(src.mExtras);
4257            }
4258        }
4259        return this;
4260    }
4261
4262    /**
4263     * Add a set of extended data to the intent.  The keys must include a package
4264     * prefix, for example the app com.android.contacts would use names
4265     * like "com.android.contacts.ShowAll".
4266     *
4267     * @param extras The Bundle of extras to add to this intent.
4268     *
4269     * @see #putExtra
4270     * @see #removeExtra
4271     */
4272    public Intent putExtras(Bundle extras) {
4273        if (mExtras == null) {
4274            mExtras = new Bundle();
4275        }
4276        mExtras.putAll(extras);
4277        return this;
4278    }
4279
4280    /**
4281     * Completely replace the extras in the Intent with the extras in the
4282     * given Intent.
4283     *
4284     * @param src The exact extras contained in this Intent are copied
4285     * into the target intent, replacing any that were previously there.
4286     */
4287    public Intent replaceExtras(Intent src) {
4288        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
4289        return this;
4290    }
4291
4292    /**
4293     * Completely replace the extras in the Intent with the given Bundle of
4294     * extras.
4295     *
4296     * @param extras The new set of extras in the Intent, or null to erase
4297     * all extras.
4298     */
4299    public Intent replaceExtras(Bundle extras) {
4300        mExtras = extras != null ? new Bundle(extras) : null;
4301        return this;
4302    }
4303
4304    /**
4305     * Remove extended data from the intent.
4306     *
4307     * @see #putExtra
4308     */
4309    public void removeExtra(String name) {
4310        if (mExtras != null) {
4311            mExtras.remove(name);
4312            if (mExtras.size() == 0) {
4313                mExtras = null;
4314            }
4315        }
4316    }
4317
4318    /**
4319     * Set special flags controlling how this intent is handled.  Most values
4320     * here depend on the type of component being executed by the Intent,
4321     * specifically the FLAG_ACTIVITY_* flags are all for use with
4322     * {@link Context#startActivity Context.startActivity()} and the
4323     * FLAG_RECEIVER_* flags are all for use with
4324     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
4325     *
4326     * <p>See the <a href="{@docRoot}guide/topics/fundamentals.html#acttask">Application Fundamentals:
4327     * Activities and Tasks</a> documentation for important information on how some of these options impact
4328     * the behavior of your application.
4329     *
4330     * @param flags The desired flags.
4331     *
4332     * @return Returns the same Intent object, for chaining multiple calls
4333     * into a single statement.
4334     *
4335     * @see #getFlags
4336     * @see #addFlags
4337     *
4338     * @see #FLAG_GRANT_READ_URI_PERMISSION
4339     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
4340     * @see #FLAG_DEBUG_LOG_RESOLUTION
4341     * @see #FLAG_FROM_BACKGROUND
4342     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
4343     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
4344     * @see #FLAG_ACTIVITY_CLEAR_TOP
4345     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
4346     * @see #FLAG_ACTIVITY_FORWARD_RESULT
4347     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
4348     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
4349     * @see #FLAG_ACTIVITY_NEW_TASK
4350     * @see #FLAG_ACTIVITY_NO_HISTORY
4351     * @see #FLAG_ACTIVITY_NO_USER_ACTION
4352     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
4353     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
4354     * @see #FLAG_ACTIVITY_SINGLE_TOP
4355     * @see #FLAG_RECEIVER_REGISTERED_ONLY
4356     */
4357    public Intent setFlags(int flags) {
4358        mFlags = flags;
4359        return this;
4360    }
4361
4362    /**
4363     * Add additional flags to the intent (or with existing flags
4364     * value).
4365     *
4366     * @param flags The new flags to set.
4367     *
4368     * @return Returns the same Intent object, for chaining multiple calls
4369     * into a single statement.
4370     *
4371     * @see #setFlags
4372     */
4373    public Intent addFlags(int flags) {
4374        mFlags |= flags;
4375        return this;
4376    }
4377
4378    /**
4379     * (Usually optional) Set an explicit application package name that limits
4380     * the components this Intent will resolve to.  If left to the default
4381     * value of null, all components in all applications will considered.
4382     * If non-null, the Intent can only match the components in the given
4383     * application package.
4384     *
4385     * @param packageName The name of the application package to handle the
4386     * intent, or null to allow any application package.
4387     *
4388     * @return Returns the same Intent object, for chaining multiple calls
4389     * into a single statement.
4390     *
4391     * @see #getPackage
4392     * @see #resolveActivity
4393     */
4394    public Intent setPackage(String packageName) {
4395        mPackage = packageName;
4396        return this;
4397    }
4398
4399    /**
4400     * (Usually optional) Explicitly set the component to handle the intent.
4401     * If left with the default value of null, the system will determine the
4402     * appropriate class to use based on the other fields (action, data,
4403     * type, categories) in the Intent.  If this class is defined, the
4404     * specified class will always be used regardless of the other fields.  You
4405     * should only set this value when you know you absolutely want a specific
4406     * class to be used; otherwise it is better to let the system find the
4407     * appropriate class so that you will respect the installed applications
4408     * and user preferences.
4409     *
4410     * @param component The name of the application component to handle the
4411     * intent, or null to let the system find one for you.
4412     *
4413     * @return Returns the same Intent object, for chaining multiple calls
4414     * into a single statement.
4415     *
4416     * @see #setClass
4417     * @see #setClassName(Context, String)
4418     * @see #setClassName(String, String)
4419     * @see #getComponent
4420     * @see #resolveActivity
4421     */
4422    public Intent setComponent(ComponentName component) {
4423        mComponent = component;
4424        return this;
4425    }
4426
4427    /**
4428     * Convenience for calling {@link #setComponent} with an
4429     * explicit class name.
4430     *
4431     * @param packageContext A Context of the application package implementing
4432     * this class.
4433     * @param className The name of a class inside of the application package
4434     * that will be used as the component for this Intent.
4435     *
4436     * @return Returns the same Intent object, for chaining multiple calls
4437     * into a single statement.
4438     *
4439     * @see #setComponent
4440     * @see #setClass
4441     */
4442    public Intent setClassName(Context packageContext, String className) {
4443        mComponent = new ComponentName(packageContext, className);
4444        return this;
4445    }
4446
4447    /**
4448     * Convenience for calling {@link #setComponent} with an
4449     * explicit application package name and class name.
4450     *
4451     * @param packageName The name of the package implementing the desired
4452     * component.
4453     * @param className The name of a class inside of the application package
4454     * that will be used as the component for this Intent.
4455     *
4456     * @return Returns the same Intent object, for chaining multiple calls
4457     * into a single statement.
4458     *
4459     * @see #setComponent
4460     * @see #setClass
4461     */
4462    public Intent setClassName(String packageName, String className) {
4463        mComponent = new ComponentName(packageName, className);
4464        return this;
4465    }
4466
4467    /**
4468     * Convenience for calling {@link #setComponent(ComponentName)} with the
4469     * name returned by a {@link Class} object.
4470     *
4471     * @param packageContext A Context of the application package implementing
4472     * this class.
4473     * @param cls The class name to set, equivalent to
4474     *            <code>setClassName(context, cls.getName())</code>.
4475     *
4476     * @return Returns the same Intent object, for chaining multiple calls
4477     * into a single statement.
4478     *
4479     * @see #setComponent
4480     */
4481    public Intent setClass(Context packageContext, Class<?> cls) {
4482        mComponent = new ComponentName(packageContext, cls);
4483        return this;
4484    }
4485
4486    /**
4487     * Use with {@link #fillIn} to allow the current action value to be
4488     * overwritten, even if it is already set.
4489     */
4490    public static final int FILL_IN_ACTION = 1<<0;
4491
4492    /**
4493     * Use with {@link #fillIn} to allow the current data or type value
4494     * overwritten, even if it is already set.
4495     */
4496    public static final int FILL_IN_DATA = 1<<1;
4497
4498    /**
4499     * Use with {@link #fillIn} to allow the current categories to be
4500     * overwritten, even if they are already set.
4501     */
4502    public static final int FILL_IN_CATEGORIES = 1<<2;
4503
4504    /**
4505     * Use with {@link #fillIn} to allow the current component value to be
4506     * overwritten, even if it is already set.
4507     */
4508    public static final int FILL_IN_COMPONENT = 1<<3;
4509
4510    /**
4511     * Use with {@link #fillIn} to allow the current package value to be
4512     * overwritten, even if it is already set.
4513     */
4514    public static final int FILL_IN_PACKAGE = 1<<4;
4515
4516    /**
4517     * Copy the contents of <var>other</var> in to this object, but only
4518     * where fields are not defined by this object.  For purposes of a field
4519     * being defined, the following pieces of data in the Intent are
4520     * considered to be separate fields:
4521     *
4522     * <ul>
4523     * <li> action, as set by {@link #setAction}.
4524     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4525     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4526     * <li> categories, as set by {@link #addCategory}.
4527     * <li> package, as set by {@link #setPackage}.
4528     * <li> component, as set by {@link #setComponent(ComponentName)} or
4529     * related methods.
4530     * <li> each top-level name in the associated extras.
4531     * </ul>
4532     *
4533     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4534     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4535     * and {@link #FILL_IN_COMPONENT} to override the restriction where the
4536     * corresponding field will not be replaced if it is already set.
4537     *
4538     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4539     * and Intent B with {action="gotit", data-type="some/thing",
4540     * categories="one","two"}.
4541     *
4542     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4543     * containing: {action="gotit", data-type="some/thing",
4544     * categories="bar"}.
4545     *
4546     * @param other Another Intent whose values are to be used to fill in
4547     * the current one.
4548     * @param flags Options to control which fields can be filled in.
4549     *
4550     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4551     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, {@link #FILL_IN_PACKAGE},
4552     * and {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4553     */
4554    public int fillIn(Intent other, int flags) {
4555        int changes = 0;
4556        if (other.mAction != null
4557                && (mAction == null || (flags&FILL_IN_ACTION) != 0)) {
4558            mAction = other.mAction;
4559            changes |= FILL_IN_ACTION;
4560        }
4561        if ((other.mData != null || other.mType != null)
4562                && ((mData == null && mType == null)
4563                        || (flags&FILL_IN_DATA) != 0)) {
4564            mData = other.mData;
4565            mType = other.mType;
4566            changes |= FILL_IN_DATA;
4567        }
4568        if (other.mCategories != null
4569                && (mCategories == null || (flags&FILL_IN_CATEGORIES) != 0)) {
4570            if (other.mCategories != null) {
4571                mCategories = new HashSet<String>(other.mCategories);
4572            }
4573            changes |= FILL_IN_CATEGORIES;
4574        }
4575        if (other.mPackage != null
4576                && (mPackage == null || (flags&FILL_IN_PACKAGE) != 0)) {
4577            mPackage = other.mPackage;
4578            changes |= FILL_IN_PACKAGE;
4579        }
4580        // Component is special: it can -only- be set if explicitly allowed,
4581        // since otherwise the sender could force the intent somewhere the
4582        // originator didn't intend.
4583        if (other.mComponent != null && (flags&FILL_IN_COMPONENT) != 0) {
4584            mComponent = other.mComponent;
4585            changes |= FILL_IN_COMPONENT;
4586        }
4587        mFlags |= other.mFlags;
4588        if (mExtras == null) {
4589            if (other.mExtras != null) {
4590                mExtras = new Bundle(other.mExtras);
4591            }
4592        } else if (other.mExtras != null) {
4593            try {
4594                Bundle newb = new Bundle(other.mExtras);
4595                newb.putAll(mExtras);
4596                mExtras = newb;
4597            } catch (RuntimeException e) {
4598                // Modifying the extras can cause us to unparcel the contents
4599                // of the bundle, and if we do this in the system process that
4600                // may fail.  We really should handle this (i.e., the Bundle
4601                // impl shouldn't be on top of a plain map), but for now just
4602                // ignore it and keep the original contents. :(
4603                Log.w("Intent", "Failure filling in extras", e);
4604            }
4605        }
4606        return changes;
4607    }
4608
4609    /**
4610     * Wrapper class holding an Intent and implementing comparisons on it for
4611     * the purpose of filtering.  The class implements its
4612     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4613     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4614     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4615     * on the wrapped Intent.
4616     */
4617    public static final class FilterComparison {
4618        private final Intent mIntent;
4619        private final int mHashCode;
4620
4621        public FilterComparison(Intent intent) {
4622            mIntent = intent;
4623            mHashCode = intent.filterHashCode();
4624        }
4625
4626        /**
4627         * Return the Intent that this FilterComparison represents.
4628         * @return Returns the Intent held by the FilterComparison.  Do
4629         * not modify!
4630         */
4631        public Intent getIntent() {
4632            return mIntent;
4633        }
4634
4635        @Override
4636        public boolean equals(Object obj) {
4637            if (obj instanceof FilterComparison) {
4638                Intent other = ((FilterComparison)obj).mIntent;
4639                return mIntent.filterEquals(other);
4640            }
4641            return false;
4642        }
4643
4644        @Override
4645        public int hashCode() {
4646            return mHashCode;
4647        }
4648    }
4649
4650    /**
4651     * Determine if two intents are the same for the purposes of intent
4652     * resolution (filtering). That is, if their action, data, type,
4653     * class, and categories are the same.  This does <em>not</em> compare
4654     * any extra data included in the intents.
4655     *
4656     * @param other The other Intent to compare against.
4657     *
4658     * @return Returns true if action, data, type, class, and categories
4659     *         are the same.
4660     */
4661    public boolean filterEquals(Intent other) {
4662        if (other == null) {
4663            return false;
4664        }
4665        if (mAction != other.mAction) {
4666            if (mAction != null) {
4667                if (!mAction.equals(other.mAction)) {
4668                    return false;
4669                }
4670            } else {
4671                if (!other.mAction.equals(mAction)) {
4672                    return false;
4673                }
4674            }
4675        }
4676        if (mData != other.mData) {
4677            if (mData != null) {
4678                if (!mData.equals(other.mData)) {
4679                    return false;
4680                }
4681            } else {
4682                if (!other.mData.equals(mData)) {
4683                    return false;
4684                }
4685            }
4686        }
4687        if (mType != other.mType) {
4688            if (mType != null) {
4689                if (!mType.equals(other.mType)) {
4690                    return false;
4691                }
4692            } else {
4693                if (!other.mType.equals(mType)) {
4694                    return false;
4695                }
4696            }
4697        }
4698        if (mPackage != other.mPackage) {
4699            if (mPackage != null) {
4700                if (!mPackage.equals(other.mPackage)) {
4701                    return false;
4702                }
4703            } else {
4704                if (!other.mPackage.equals(mPackage)) {
4705                    return false;
4706                }
4707            }
4708        }
4709        if (mComponent != other.mComponent) {
4710            if (mComponent != null) {
4711                if (!mComponent.equals(other.mComponent)) {
4712                    return false;
4713                }
4714            } else {
4715                if (!other.mComponent.equals(mComponent)) {
4716                    return false;
4717                }
4718            }
4719        }
4720        if (mCategories != other.mCategories) {
4721            if (mCategories != null) {
4722                if (!mCategories.equals(other.mCategories)) {
4723                    return false;
4724                }
4725            } else {
4726                if (!other.mCategories.equals(mCategories)) {
4727                    return false;
4728                }
4729            }
4730        }
4731
4732        return true;
4733    }
4734
4735    /**
4736     * Generate hash code that matches semantics of filterEquals().
4737     *
4738     * @return Returns the hash value of the action, data, type, class, and
4739     *         categories.
4740     *
4741     * @see #filterEquals
4742     */
4743    public int filterHashCode() {
4744        int code = 0;
4745        if (mAction != null) {
4746            code += mAction.hashCode();
4747        }
4748        if (mData != null) {
4749            code += mData.hashCode();
4750        }
4751        if (mType != null) {
4752            code += mType.hashCode();
4753        }
4754        if (mPackage != null) {
4755            code += mPackage.hashCode();
4756        }
4757        if (mComponent != null) {
4758            code += mComponent.hashCode();
4759        }
4760        if (mCategories != null) {
4761            code += mCategories.hashCode();
4762        }
4763        return code;
4764    }
4765
4766    @Override
4767    public String toString() {
4768        StringBuilder   b = new StringBuilder(128);
4769
4770        b.append("Intent { ");
4771        toShortString(b, true, true);
4772        b.append(" }");
4773
4774        return b.toString();
4775    }
4776
4777    /** @hide */
4778    public String toShortString(boolean comp, boolean extras) {
4779        StringBuilder   b = new StringBuilder(128);
4780        toShortString(b, comp, extras);
4781        return b.toString();
4782    }
4783
4784    /** @hide */
4785    public void toShortString(StringBuilder b, boolean comp, boolean extras) {
4786        boolean first = true;
4787        if (mAction != null) {
4788            b.append("act=").append(mAction);
4789            first = false;
4790        }
4791        if (mCategories != null) {
4792            if (!first) {
4793                b.append(' ');
4794            }
4795            first = false;
4796            b.append("cat=[");
4797            Iterator<String> i = mCategories.iterator();
4798            boolean didone = false;
4799            while (i.hasNext()) {
4800                if (didone) b.append(",");
4801                didone = true;
4802                b.append(i.next());
4803            }
4804            b.append("]");
4805        }
4806        if (mData != null) {
4807            if (!first) {
4808                b.append(' ');
4809            }
4810            first = false;
4811            b.append("dat=").append(mData);
4812        }
4813        if (mType != null) {
4814            if (!first) {
4815                b.append(' ');
4816            }
4817            first = false;
4818            b.append("typ=").append(mType);
4819        }
4820        if (mFlags != 0) {
4821            if (!first) {
4822                b.append(' ');
4823            }
4824            first = false;
4825            b.append("flg=0x").append(Integer.toHexString(mFlags));
4826        }
4827        if (mPackage != null) {
4828            if (!first) {
4829                b.append(' ');
4830            }
4831            first = false;
4832            b.append("pkg=").append(mPackage);
4833        }
4834        if (comp && mComponent != null) {
4835            if (!first) {
4836                b.append(' ');
4837            }
4838            first = false;
4839            b.append("cmp=").append(mComponent.flattenToShortString());
4840        }
4841        if (extras && mExtras != null) {
4842            if (!first) {
4843                b.append(' ');
4844            }
4845            first = false;
4846            b.append("(has extras)");
4847        }
4848    }
4849
4850    /**
4851     * Call {@link #toUri} with 0 flags.
4852     * @deprecated Use {@link #toUri} instead.
4853     */
4854    @Deprecated
4855    public String toURI() {
4856        return toUri(0);
4857    }
4858
4859    /**
4860     * Convert this Intent into a String holding a URI representation of it.
4861     * The returned URI string has been properly URI encoded, so it can be
4862     * used with {@link Uri#parse Uri.parse(String)}.  The URI contains the
4863     * Intent's data as the base URI, with an additional fragment describing
4864     * the action, categories, type, flags, package, component, and extras.
4865     *
4866     * <p>You can convert the returned string back to an Intent with
4867     * {@link #getIntent}.
4868     *
4869     * @param flags Additional operating flags.  Either 0 or
4870     * {@link #URI_INTENT_SCHEME}.
4871     *
4872     * @return Returns a URI encoding URI string describing the entire contents
4873     * of the Intent.
4874     */
4875    public String toUri(int flags) {
4876        StringBuilder uri = new StringBuilder(128);
4877        String scheme = null;
4878        if (mData != null) {
4879            String data = mData.toString();
4880            if ((flags&URI_INTENT_SCHEME) != 0) {
4881                final int N = data.length();
4882                for (int i=0; i<N; i++) {
4883                    char c = data.charAt(i);
4884                    if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
4885                            || c == '.' || c == '-') {
4886                        continue;
4887                    }
4888                    if (c == ':' && i > 0) {
4889                        // Valid scheme.
4890                        scheme = data.substring(0, i);
4891                        uri.append("intent:");
4892                        data = data.substring(i+1);
4893                        break;
4894                    }
4895
4896                    // No scheme.
4897                    break;
4898                }
4899            }
4900            uri.append(data);
4901
4902        } else if ((flags&URI_INTENT_SCHEME) != 0) {
4903            uri.append("intent:");
4904        }
4905
4906        uri.append("#Intent;");
4907
4908        if (scheme != null) {
4909            uri.append("scheme=").append(scheme).append(';');
4910        }
4911        if (mAction != null) {
4912            uri.append("action=").append(Uri.encode(mAction)).append(';');
4913        }
4914        if (mCategories != null) {
4915            for (String category : mCategories) {
4916                uri.append("category=").append(Uri.encode(category)).append(';');
4917            }
4918        }
4919        if (mType != null) {
4920            uri.append("type=").append(Uri.encode(mType, "/")).append(';');
4921        }
4922        if (mFlags != 0) {
4923            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4924        }
4925        if (mPackage != null) {
4926            uri.append("package=").append(Uri.encode(mPackage)).append(';');
4927        }
4928        if (mComponent != null) {
4929            uri.append("component=").append(Uri.encode(
4930                    mComponent.flattenToShortString(), "/")).append(';');
4931        }
4932        if (mExtras != null) {
4933            for (String key : mExtras.keySet()) {
4934                final Object value = mExtras.get(key);
4935                char entryType =
4936                        value instanceof String    ? 'S' :
4937                        value instanceof Boolean   ? 'B' :
4938                        value instanceof Byte      ? 'b' :
4939                        value instanceof Character ? 'c' :
4940                        value instanceof Double    ? 'd' :
4941                        value instanceof Float     ? 'f' :
4942                        value instanceof Integer   ? 'i' :
4943                        value instanceof Long      ? 'l' :
4944                        value instanceof Short     ? 's' :
4945                        '\0';
4946
4947                if (entryType != '\0') {
4948                    uri.append(entryType);
4949                    uri.append('.');
4950                    uri.append(Uri.encode(key));
4951                    uri.append('=');
4952                    uri.append(Uri.encode(value.toString()));
4953                    uri.append(';');
4954                }
4955            }
4956        }
4957
4958        uri.append("end");
4959
4960        return uri.toString();
4961    }
4962
4963    public int describeContents() {
4964        return (mExtras != null) ? mExtras.describeContents() : 0;
4965    }
4966
4967    public void writeToParcel(Parcel out, int flags) {
4968        out.writeString(mAction);
4969        Uri.writeToParcel(out, mData);
4970        out.writeString(mType);
4971        out.writeInt(mFlags);
4972        out.writeString(mPackage);
4973        ComponentName.writeToParcel(mComponent, out);
4974
4975        if (mCategories != null) {
4976            out.writeInt(mCategories.size());
4977            for (String category : mCategories) {
4978                out.writeString(category);
4979            }
4980        } else {
4981            out.writeInt(0);
4982        }
4983
4984        out.writeBundle(mExtras);
4985    }
4986
4987    public static final Parcelable.Creator<Intent> CREATOR
4988            = new Parcelable.Creator<Intent>() {
4989        public Intent createFromParcel(Parcel in) {
4990            return new Intent(in);
4991        }
4992        public Intent[] newArray(int size) {
4993            return new Intent[size];
4994        }
4995    };
4996
4997    private Intent(Parcel in) {
4998        readFromParcel(in);
4999    }
5000
5001    public void readFromParcel(Parcel in) {
5002        mAction = in.readString();
5003        mData = Uri.CREATOR.createFromParcel(in);
5004        mType = in.readString();
5005        mFlags = in.readInt();
5006        mPackage = in.readString();
5007        mComponent = ComponentName.readFromParcel(in);
5008
5009        int N = in.readInt();
5010        if (N > 0) {
5011            mCategories = new HashSet<String>();
5012            int i;
5013            for (i=0; i<N; i++) {
5014                mCategories.add(in.readString());
5015            }
5016        } else {
5017            mCategories = null;
5018        }
5019
5020        mExtras = in.readBundle();
5021    }
5022
5023    /**
5024     * Parses the "intent" element (and its children) from XML and instantiates
5025     * an Intent object.  The given XML parser should be located at the tag
5026     * where parsing should start (often named "intent"), from which the
5027     * basic action, data, type, and package and class name will be
5028     * retrieved.  The function will then parse in to any child elements,
5029     * looking for <category android:name="xxx"> tags to add categories and
5030     * <extra android:name="xxx" android:value="yyy"> to attach extra data
5031     * to the intent.
5032     *
5033     * @param resources The Resources to use when inflating resources.
5034     * @param parser The XML parser pointing at an "intent" tag.
5035     * @param attrs The AttributeSet interface for retrieving extended
5036     * attribute data at the current <var>parser</var> location.
5037     * @return An Intent object matching the XML data.
5038     * @throws XmlPullParserException If there was an XML parsing error.
5039     * @throws IOException If there was an I/O error.
5040     */
5041    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
5042            throws XmlPullParserException, IOException {
5043        Intent intent = new Intent();
5044
5045        TypedArray sa = resources.obtainAttributes(attrs,
5046                com.android.internal.R.styleable.Intent);
5047
5048        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
5049
5050        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
5051        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
5052        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
5053
5054        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
5055        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
5056        if (packageName != null && className != null) {
5057            intent.setComponent(new ComponentName(packageName, className));
5058        }
5059
5060        sa.recycle();
5061
5062        int outerDepth = parser.getDepth();
5063        int type;
5064        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
5065               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
5066            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
5067                continue;
5068            }
5069
5070            String nodeName = parser.getName();
5071            if (nodeName.equals("category")) {
5072                sa = resources.obtainAttributes(attrs,
5073                        com.android.internal.R.styleable.IntentCategory);
5074                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
5075                sa.recycle();
5076
5077                if (cat != null) {
5078                    intent.addCategory(cat);
5079                }
5080                XmlUtils.skipCurrentTag(parser);
5081
5082            } else if (nodeName.equals("extra")) {
5083                if (intent.mExtras == null) {
5084                    intent.mExtras = new Bundle();
5085                }
5086                resources.parseBundleExtra("extra", attrs, intent.mExtras);
5087                XmlUtils.skipCurrentTag(parser);
5088
5089            } else {
5090                XmlUtils.skipCurrentTag(parser);
5091            }
5092        }
5093
5094        return intent;
5095    }
5096}
5097