Intent.java revision 94cbba0933e50d593c1c462cff698dd3387ba95b
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.content;
18
19import org.xmlpull.v1.XmlPullParser;
20import org.xmlpull.v1.XmlPullParserException;
21
22import android.annotation.SdkConstant;
23import android.annotation.SdkConstant.SdkConstantType;
24import android.content.pm.ActivityInfo;
25import android.content.pm.PackageManager;
26import android.content.pm.ResolveInfo;
27import android.content.res.Resources;
28import android.content.res.TypedArray;
29import android.net.Uri;
30import android.os.Bundle;
31import android.os.IBinder;
32import android.os.Parcel;
33import android.os.Parcelable;
34import android.util.AttributeSet;
35import android.util.Log;
36import com.android.internal.util.XmlUtils;
37
38import java.io.IOException;
39import java.io.Serializable;
40import java.net.URISyntaxException;
41import java.util.ArrayList;
42import java.util.HashSet;
43import java.util.Iterator;
44import java.util.Set;
45
46/**
47 * An intent is an abstract description of an operation to be performed.  It
48 * can be used with {@link Context#startActivity(Intent) startActivity} to
49 * launch an {@link android.app.Activity},
50 * {@link android.content.Context#sendBroadcast(Intent) broadcastIntent} to
51 * send it to any interested {@link BroadcastReceiver BroadcastReceiver} components,
52 * and {@link android.content.Context#startService} or
53 * {@link android.content.Context#bindService} to communicate with a
54 * background {@link android.app.Service}.
55 *
56 * <p>An Intent provides a facility for performing late runtime binding between
57 * the code in different applications.  Its most significant use is in the
58 * launching of activities, where it can be thought of as the glue between
59 * activities. It is
60 * basically a passive data structure holding an abstract description of an
61 * action to be performed. The primary pieces of information in an intent
62 * are:</p>
63 *
64 * <ul>
65 *   <li> <p><b>action</b> -- The general action to be performed, such as
66 *     {@link #ACTION_VIEW}, {@link #ACTION_EDIT}, {@link #ACTION_MAIN},
67 *     etc.</p>
68 *   </li>
69 *   <li> <p><b>data</b> -- The data to operate on, such as a person record
70 *     in the contacts database, expressed as a {@link android.net.Uri}.</p>
71 *   </li>
72 * </ul>
73 *
74 *
75 * <p>Some examples of action/data pairs are:</p>
76 *
77 * <ul>
78 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/1</i></b> -- Display
79 *     information about the person whose identifier is "1".</p>
80 *   </li>
81 *   <li> <p><b>{@link #ACTION_DIAL} <i>content://contacts/1</i></b> -- Display
82 *     the phone dialer with the person filled in.</p>
83 *   </li>
84 *   <li> <p><b>{@link #ACTION_VIEW} <i>tel:123</i></b> -- Display
85 *     the phone dialer with the given number filled in.  Note how the
86 *     VIEW action does what what is considered the most reasonable thing for
87 *     a particular URI.</p>
88 *   </li>
89 *   <li> <p><b>{@link #ACTION_DIAL} <i>tel:123</i></b> -- Display
90 *     the phone dialer with the given number filled in.</p>
91 *   </li>
92 *   <li> <p><b>{@link #ACTION_EDIT} <i>content://contacts/1</i></b> -- Edit
93 *     information about the person whose identifier is "1".</p>
94 *   </li>
95 *   <li> <p><b>{@link #ACTION_VIEW} <i>content://contacts/</i></b> -- Display
96 *     a list of people, which the user can browse through.  This example is a
97 *     typical top-level entry into the Contacts application, showing you the
98 *     list of people. Selecting a particular person to view would result in a
99 *     new intent { <b>{@link #ACTION_VIEW} <i>content://contacts/N</i></b> }
100 *     being used to start an activity to display that person.</p>
101 *   </li>
102 * </ul>
103 *
104 * <p>In addition to these primary attributes, there are a number of secondary
105 * attributes that you can also include with an intent:</p>
106 *
107 * <ul>
108 *     <li> <p><b>category</b> -- Gives additional information about the action
109 *         to execute.  For example, {@link #CATEGORY_LAUNCHER} means it should
110 *         appear in the Launcher as a top-level application, while
111 *         {@link #CATEGORY_ALTERNATIVE} means it should be included in a list
112 *         of alternative actions the user can perform on a piece of data.</p>
113 *     <li> <p><b>type</b> -- Specifies an explicit type (a MIME type) of the
114 *         intent data.  Normally the type is inferred from the data itself.
115 *         By setting this attribute, you disable that evaluation and force
116 *         an explicit type.</p>
117 *     <li> <p><b>component</b> -- Specifies an explicit name of a component
118 *         class to use for the intent.  Normally this is determined by looking
119 *         at the other information in the intent (the action, data/type, and
120 *         categories) and matching that with a component that can handle it.
121 *         If this attribute is set then none of the evaluation is performed,
122 *         and this component is used exactly as is.  By specifying this attribute,
123 *         all of the other Intent attributes become optional.</p>
124 *     <li> <p><b>extras</b> -- This is a {@link Bundle} of any additional information.
125 *         This can be used to provide extended information to the component.
126 *         For example, if we have a action to send an e-mail message, we could
127 *         also include extra pieces of data here to supply a subject, body,
128 *         etc.</p>
129 * </ul>
130 *
131 * <p>Here are some examples of other operations you can specify as intents
132 * using these additional parameters:</p>
133 *
134 * <ul>
135 *   <li> <p><b>{@link #ACTION_MAIN} with category {@link #CATEGORY_HOME}</b> --
136 *     Launch the home screen.</p>
137 *   </li>
138 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
139 *     <i>{@link android.provider.Contacts.Phones#CONTENT_URI
140 *     vnd.android.cursor.item/phone}</i></b>
141 *     -- Display the list of people's phone numbers, allowing the user to
142 *     browse through them and pick one and return it to the parent activity.</p>
143 *   </li>
144 *   <li> <p><b>{@link #ACTION_GET_CONTENT} with MIME type
145 *     <i>*{@literal /}*</i> and category {@link #CATEGORY_OPENABLE}</b>
146 *     -- Display all pickers for data that can be opened with
147 *     {@link ContentResolver#openInputStream(Uri) ContentResolver.openInputStream()},
148 *     allowing the user to pick one of them and then some data inside of it
149 *     and returning the resulting URI to the caller.  This can be used,
150 *     for example, in an e-mail application to allow the user to pick some
151 *     data to include as an attachment.</p>
152 *   </li>
153 * </ul>
154 *
155 * <p>There are a variety of standard Intent action and category constants
156 * defined in the Intent class, but applications can also define their own.
157 * These strings use java style scoping, to ensure they are unique -- for
158 * example, the standard {@link #ACTION_VIEW} is called
159 * "android.app.action.VIEW".</p>
160 *
161 * <p>Put together, the set of actions, data types, categories, and extra data
162 * defines a language for the system allowing for the expression of phrases
163 * such as "call john smith's cell".  As applications are added to the system,
164 * they can extend this language by adding new actions, types, and categories, or
165 * they can modify the behavior of existing phrases by supplying their own
166 * activities that handle them.</p>
167 *
168 * <a name="IntentResolution"></a>
169 * <h3>Intent Resolution</h3>
170 *
171 * <p>There are two primary forms of intents you will use.
172 *
173 * <ul>
174 *     <li> <p><b>Explicit Intents</b> have specified a component (via
175 *     {@link #setComponent} or {@link #setClass}), which provides the exact
176 *     class to be run.  Often these will not include any other information,
177 *     simply being a way for an application to launch various internal
178 *     activities it has as the user interacts with the application.
179 *
180 *     <li> <p><b>Implicit Intents</b> have not specified a component;
181 *     instead, they must include enough information for the system to
182 *     determine which of the available components is best to run for that
183 *     intent.
184 * </ul>
185 *
186 * <p>When using implicit intents, given such an arbitrary intent we need to
187 * know what to do with it. This is handled by the process of <em>Intent
188 * resolution</em>, which maps an Intent to an {@link android.app.Activity},
189 * {@link BroadcastReceiver}, or {@link android.app.Service} (or sometimes two or
190 * more activities/receivers) that can handle it.</p>
191 *
192 * <p>The intent resolution mechanism basically revolves around matching an
193 * Intent against all of the &lt;intent-filter&gt; descriptions in the
194 * installed application packages.  (Plus, in the case of broadcasts, any {@link BroadcastReceiver}
195 * objects explicitly registered with {@link Context#registerReceiver}.)  More
196 * details on this can be found in the documentation on the {@link
197 * IntentFilter} class.</p>
198 *
199 * <p>There are three pieces of information in the Intent that are used for
200 * resolution: the action, type, and category.  Using this information, a query
201 * is done on the {@link PackageManager} for a component that can handle the
202 * intent. The appropriate component is determined based on the intent
203 * information supplied in the <code>AndroidManifest.xml</code> file as
204 * follows:</p>
205 *
206 * <ul>
207 *     <li> <p>The <b>action</b>, if given, must be listed by the component as
208 *         one it handles.</p>
209 *     <li> <p>The <b>type</b> is retrieved from the Intent's data, if not
210 *         already supplied in the Intent.  Like the action, if a type is
211 *         included in the intent (either explicitly or implicitly in its
212 *         data), then this must be listed by the component as one it handles.</p>
213 *     <li> For data that is not a <code>content:</code> URI and where no explicit
214 *         type is included in the Intent, instead the <b>scheme</b> of the
215 *         intent data (such as <code>http:</code> or <code>mailto:</code>) is
216 *         considered. Again like the action, if we are matching a scheme it
217 *         must be listed by the component as one it can handle.
218 *     <li> <p>The <b>categories</b>, if supplied, must <em>all</em> be listed
219 *         by the activity as categories it handles.  That is, if you include
220 *         the categories {@link #CATEGORY_LAUNCHER} and
221 *         {@link #CATEGORY_ALTERNATIVE}, then you will only resolve to components
222 *         with an intent that lists <em>both</em> of those categories.
223 *         Activities will very often need to support the
224 *         {@link #CATEGORY_DEFAULT} so that they can be found by
225 *         {@link Context#startActivity Context.startActivity()}.</p>
226 * </ul>
227 *
228 * <p>For example, consider the Note Pad sample application that
229 * allows user to browse through a list of notes data and view details about
230 * individual items.  Text in italics indicate places were you would replace a
231 * name with one specific to your own package.</p>
232 *
233 * <pre> &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
234 *       package="<i>com.android.notepad</i>"&gt;
235 *     &lt;application android:icon="@drawable/app_notes"
236 *             android:label="@string/app_name"&gt;
237 *
238 *         &lt;provider class=".NotePadProvider"
239 *                 android:authorities="<i>com.google.provider.NotePad</i>" /&gt;
240 *
241 *         &lt;activity class=".NotesList" android:label="@string/title_notes_list"&gt;
242 *             &lt;intent-filter&gt;
243 *                 &lt;action android:value="android.intent.action.MAIN" /&gt;
244 *                 &lt;category android:value="android.intent.category.LAUNCHER" /&gt;
245 *             &lt;/intent-filter&gt;
246 *             &lt;intent-filter&gt;
247 *                 &lt;action android:value="android.intent.action.VIEW" /&gt;
248 *                 &lt;action android:value="android.intent.action.EDIT" /&gt;
249 *                 &lt;action android:value="android.intent.action.PICK" /&gt;
250 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
251 *                 &lt;type android:value="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
252 *             &lt;/intent-filter&gt;
253 *             &lt;intent-filter&gt;
254 *                 &lt;action android:value="android.intent.action.GET_CONTENT" /&gt;
255 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
256 *                 &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
257 *             &lt;/intent-filter&gt;
258 *         &lt;/activity&gt;
259 *
260 *         &lt;activity class=".NoteEditor" android:label="@string/title_note"&gt;
261 *             &lt;intent-filter android:label="@string/resolve_edit"&gt;
262 *                 &lt;action android:value="android.intent.action.VIEW" /&gt;
263 *                 &lt;action android:value="android.intent.action.EDIT" /&gt;
264 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
265 *                 &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
266 *             &lt;/intent-filter&gt;
267 *
268 *             &lt;intent-filter&gt;
269 *                 &lt;action android:value="android.intent.action.INSERT" /&gt;
270 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
271 *                 &lt;type android:value="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
272 *             &lt;/intent-filter&gt;
273 *
274 *         &lt;/activity&gt;
275 *
276 *         &lt;activity class=".TitleEditor" android:label="@string/title_edit_title"
277 *                 android:theme="@android:style/Theme.Dialog"&gt;
278 *             &lt;intent-filter android:label="@string/resolve_title"&gt;
279 *                 &lt;action android:value="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
280 *                 &lt;category android:value="android.intent.category.DEFAULT" /&gt;
281 *                 &lt;category android:value="android.intent.category.ALTERNATIVE" /&gt;
282 *                 &lt;category android:value="android.intent.category.SELECTED_ALTERNATIVE" /&gt;
283 *                 &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
284 *             &lt;/intent-filter&gt;
285 *         &lt;/activity&gt;
286 *
287 *     &lt;/application&gt;
288 * &lt;/manifest&gt;</pre>
289 *
290 * <p>The first activity,
291 * <code>com.android.notepad.NotesList</code>, serves as our main
292 * entry into the app.  It can do three things as described by its three intent
293 * templates:
294 * <ol>
295 * <li><pre>
296 * &lt;intent-filter&gt;
297 *     &lt;action android:value="{@link #ACTION_MAIN android.intent.action.MAIN}" /&gt;
298 *     &lt;category android:value="{@link #CATEGORY_LAUNCHER android.intent.category.LAUNCHER}" /&gt;
299 * &lt;/intent-filter&gt;</pre>
300 * <p>This provides a top-level entry into the NotePad application: the standard
301 * MAIN action is a main entry point (not requiring any other information in
302 * the Intent), and the LAUNCHER category says that this entry point should be
303 * listed in the application launcher.</p>
304 * <li><pre>
305 * &lt;intent-filter&gt;
306 *     &lt;action android:value="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
307 *     &lt;action android:value="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
308 *     &lt;action android:value="{@link #ACTION_PICK android.intent.action.PICK}" /&gt;
309 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
310 *     &lt;type android:value="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
311 * &lt;/intent-filter&gt;</pre>
312 * <p>This declares the things that the activity can do on a directory of
313 * notes.  The type being supported is given with the &lt;type&gt; tag, where
314 * <code>vnd.android.cursor.dir/vnd.google.note</code> is a URI from which
315 * a Cursor of zero or more items (<code>vnd.android.cursor.dir</code>) can
316 * be retrieved which holds our note pad data (<code>vnd.google.note</code>).
317 * The activity allows the user to view or edit the directory of data (via
318 * the VIEW and EDIT actions), or to pick a particular note and return it
319 * to the caller (via the PICK action).  Note also the DEFAULT category
320 * supplied here: this is <em>required</em> for the
321 * {@link Context#startActivity Context.startActivity} method to resolve your
322 * activity when its component name is not explicitly specified.</p>
323 * <li><pre>
324 * &lt;intent-filter&gt;
325 *     &lt;action android:value="{@link #ACTION_GET_CONTENT android.intent.action.GET_CONTENT}" /&gt;
326 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
327 *     &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
328 * &lt;/intent-filter&gt;</pre>
329 * <p>This filter describes the ability return to the caller a note selected by
330 * the user without needing to know where it came from.  The data type
331 * <code>vnd.android.cursor.item/vnd.google.note</code> is a URI from which
332 * a Cursor of exactly one (<code>vnd.android.cursor.item</code>) item can
333 * be retrieved which contains our note pad data (<code>vnd.google.note</code>).
334 * The GET_CONTENT action is similar to the PICK action, where the activity
335 * will return to its caller a piece of data selected by the user.  Here,
336 * however, the caller specifies the type of data they desire instead of
337 * the type of data the user will be picking from.</p>
338 * </ol>
339 *
340 * <p>Given these capabilities, the following intents will resolve to the
341 * NotesList activity:</p>
342 *
343 * <ul>
344 *     <li> <p><b>{ action=android.app.action.MAIN }</b> matches all of the
345 *         activities that can be used as top-level entry points into an
346 *         application.</p>
347 *     <li> <p><b>{ action=android.app.action.MAIN,
348 *         category=android.app.category.LAUNCHER }</b> is the actual intent
349 *         used by the Launcher to populate its top-level list.</p>
350 *     <li> <p><b>{ action=android.app.action.VIEW
351 *          data=content://com.google.provider.NotePad/notes }</b>
352 *         displays a list of all the notes under
353 *         "content://com.google.provider.NotePad/notes", which
354 *         the user can browse through and see the details on.</p>
355 *     <li> <p><b>{ action=android.app.action.PICK
356 *          data=content://com.google.provider.NotePad/notes }</b>
357 *         provides a list of the notes under
358 *         "content://com.google.provider.NotePad/notes", from which
359 *         the user can pick a note whose data URL is returned back to the caller.</p>
360 *     <li> <p><b>{ action=android.app.action.GET_CONTENT
361 *          type=vnd.android.cursor.item/vnd.google.note }</b>
362 *         is similar to the pick action, but allows the caller to specify the
363 *         kind of data they want back so that the system can find the appropriate
364 *         activity to pick something of that data type.</p>
365 * </ul>
366 *
367 * <p>The second activity,
368 * <code>com.android.notepad.NoteEditor</code>, shows the user a single
369 * note entry and allows them to edit it.  It can do two things as described
370 * by its two intent templates:
371 * <ol>
372 * <li><pre>
373 * &lt;intent-filter android:label="@string/resolve_edit"&gt;
374 *     &lt;action android:value="{@link #ACTION_VIEW android.intent.action.VIEW}" /&gt;
375 *     &lt;action android:value="{@link #ACTION_EDIT android.intent.action.EDIT}" /&gt;
376 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
377 *     &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
378 * &lt;/intent-filter&gt;</pre>
379 * <p>The first, primary, purpose of this activity is to let the user interact
380 * with a single note, as decribed by the MIME type
381 * <code>vnd.android.cursor.item/vnd.google.note</code>.  The activity can
382 * either VIEW a note or allow the user to EDIT it.  Again we support the
383 * DEFAULT category to allow the activity to be launched without explicitly
384 * specifying its component.</p>
385 * <li><pre>
386 * &lt;intent-filter&gt;
387 *     &lt;action android:value="{@link #ACTION_INSERT android.intent.action.INSERT}" /&gt;
388 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
389 *     &lt;type android:value="vnd.android.cursor.dir/<i>vnd.google.note</i>" /&gt;
390 * &lt;/intent-filter&gt;</pre>
391 * <p>The secondary use of this activity is to insert a new note entry into
392 * an existing directory of notes.  This is used when the user creates a new
393 * note: the INSERT action is executed on the directory of notes, causing
394 * this activity to run and have the user create the new note data which
395 * it then adds to the content provider.</p>
396 * </ol>
397 *
398 * <p>Given these capabilities, the following intents will resolve to the
399 * NoteEditor activity:</p>
400 *
401 * <ul>
402 *     <li> <p><b>{ action=android.app.action.VIEW
403 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
404 *         shows the user the content of note <var>{ID}</var>.</p>
405 *     <li> <p><b>{ action=android.app.action.EDIT
406 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
407 *         allows the user to edit the content of note <var>{ID}</var>.</p>
408 *     <li> <p><b>{ action=android.app.action.INSERT
409 *          data=content://com.google.provider.NotePad/notes }</b>
410 *         creates a new, empty note in the notes list at
411 *         "content://com.google.provider.NotePad/notes"
412 *         and allows the user to edit it.  If they keep their changes, the URI
413 *         of the newly created note is returned to the caller.</p>
414 * </ul>
415 *
416 * <p>The last activity,
417 * <code>com.android.notepad.TitleEditor</code>, allows the user to
418 * edit the title of a note.  This could be implemented as a class that the
419 * application directly invokes (by explicitly setting its component in
420 * the Intent), but here we show a way you can publish alternative
421 * operations on existing data:</p>
422 *
423 * <pre>
424 * &lt;intent-filter android:label="@string/resolve_title"&gt;
425 *     &lt;action android:value="<i>com.android.notepad.action.EDIT_TITLE</i>" /&gt;
426 *     &lt;category android:value="{@link #CATEGORY_DEFAULT android.intent.category.DEFAULT}" /&gt;
427 *     &lt;category android:value="{@link #CATEGORY_ALTERNATIVE android.intent.category.ALTERNATIVE}" /&gt;
428 *     &lt;category android:value="{@link #CATEGORY_SELECTED_ALTERNATIVE android.intent.category.SELECTED_ALTERNATIVE}" /&gt;
429 *     &lt;type android:value="vnd.android.cursor.item/<i>vnd.google.note</i>" /&gt;
430 * &lt;/intent-filter&gt;</pre>
431 *
432 * <p>In the single intent template here, we
433 * have created our own private action called
434 * <code>com.android.notepad.action.EDIT_TITLE</code> which means to
435 * edit the title of a note.  It must be invoked on a specific note
436 * (data type <code>vnd.android.cursor.item/vnd.google.note</code>) like the previous
437 * view and edit actions, but here displays and edits the title contained
438 * in the note data.
439 *
440 * <p>In addition to supporting the default category as usual, our title editor
441 * also supports two other standard categories: ALTERNATIVE and
442 * SELECTED_ALTERNATIVE.  Implementing
443 * these categories allows others to find the special action it provides
444 * without directly knowing about it, through the
445 * {@link android.content.pm.PackageManager#queryIntentActivityOptions} method, or
446 * more often to build dynamic menu items with
447 * {@link android.view.Menu#addIntentOptions}.  Note that in the intent
448 * template here was also supply an explicit name for the template
449 * (via <code>android:label="@string/resolve_title"</code>) to better control
450 * what the user sees when presented with this activity as an alternative
451 * action to the data they are viewing.
452 *
453 * <p>Given these capabilities, the following intent will resolve to the
454 * TitleEditor activity:</p>
455 *
456 * <ul>
457 *     <li> <p><b>{ action=com.android.notepad.action.EDIT_TITLE
458 *          data=content://com.google.provider.NotePad/notes/<var>{ID}</var> }</b>
459 *         displays and allows the user to edit the title associated
460 *         with note <var>{ID}</var>.</p>
461 * </ul>
462 *
463 * <h3>Standard Activity Actions</h3>
464 *
465 * <p>These are the current standard actions that Intent defines for launching
466 * activities (usually through {@link Context#startActivity}.  The most
467 * important, and by far most frequently used, are {@link #ACTION_MAIN} and
468 * {@link #ACTION_EDIT}.
469 *
470 * <ul>
471 *     <li> {@link #ACTION_MAIN}
472 *     <li> {@link #ACTION_VIEW}
473 *     <li> {@link #ACTION_ATTACH_DATA}
474 *     <li> {@link #ACTION_EDIT}
475 *     <li> {@link #ACTION_PICK}
476 *     <li> {@link #ACTION_CHOOSER}
477 *     <li> {@link #ACTION_GET_CONTENT}
478 *     <li> {@link #ACTION_DIAL}
479 *     <li> {@link #ACTION_CALL}
480 *     <li> {@link #ACTION_SEND}
481 *     <li> {@link #ACTION_SENDTO}
482 *     <li> {@link #ACTION_ANSWER}
483 *     <li> {@link #ACTION_INSERT}
484 *     <li> {@link #ACTION_DELETE}
485 *     <li> {@link #ACTION_RUN}
486 *     <li> {@link #ACTION_SYNC}
487 *     <li> {@link #ACTION_PICK_ACTIVITY}
488 *     <li> {@link #ACTION_SEARCH}
489 *     <li> {@link #ACTION_WEB_SEARCH}
490 *     <li> {@link #ACTION_FACTORY_TEST}
491 * </ul>
492 *
493 * <h3>Standard Broadcast Actions</h3>
494 *
495 * <p>These are the current standard actions that Intent defines for receiving
496 * broadcasts (usually through {@link Context#registerReceiver} or a
497 * &lt;receiver&gt; tag in a manifest).
498 *
499 * <ul>
500 *     <li> {@link #ACTION_TIME_TICK}
501 *     <li> {@link #ACTION_TIME_CHANGED}
502 *     <li> {@link #ACTION_TIMEZONE_CHANGED}
503 *     <li> {@link #ACTION_BOOT_COMPLETED}
504 *     <li> {@link #ACTION_PACKAGE_ADDED}
505 *     <li> {@link #ACTION_PACKAGE_CHANGED}
506 *     <li> {@link #ACTION_PACKAGE_REMOVED}
507 *     <li> {@link #ACTION_UID_REMOVED}
508 *     <li> {@link #ACTION_BATTERY_CHANGED}
509 *     <li> {@link #ACTION_POWER_CONNECTED}
510 *     <li> {@link #ACTION_POWER_DISCONNECTED}
511 * </ul>
512 *
513 * <h3>Standard Categories</h3>
514 *
515 * <p>These are the current standard categories that can be used to further
516 * clarify an Intent via {@link #addCategory}.
517 *
518 * <ul>
519 *     <li> {@link #CATEGORY_DEFAULT}
520 *     <li> {@link #CATEGORY_BROWSABLE}
521 *     <li> {@link #CATEGORY_TAB}
522 *     <li> {@link #CATEGORY_ALTERNATIVE}
523 *     <li> {@link #CATEGORY_SELECTED_ALTERNATIVE}
524 *     <li> {@link #CATEGORY_LAUNCHER}
525 *     <li> {@link #CATEGORY_HOME}
526 *     <li> {@link #CATEGORY_PREFERENCE}
527 *     <li> {@link #CATEGORY_GADGET}
528 *     <li> {@link #CATEGORY_TEST}
529 * </ul>
530 *
531 * <h3>Standard Extra Data</h3>
532 *
533 * <p>These are the current standard fields that can be used as extra data via
534 * {@link #putExtra}.
535 *
536 * <ul>
537 *     <li> {@link #EXTRA_TEMPLATE}
538 *     <li> {@link #EXTRA_INTENT}
539 *     <li> {@link #EXTRA_STREAM}
540 *     <li> {@link #EXTRA_TEXT}
541 * </ul>
542 *
543 * <h3>Flags</h3>
544 *
545 * <p>These are the possible flags that can be used in the Intent via
546 * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
547 * of all possible flags.
548 */
549public class Intent implements Parcelable {
550    // ---------------------------------------------------------------------
551    // ---------------------------------------------------------------------
552    // Standard intent activity actions (see action variable).
553
554    /**
555     *  Activity Action: Start as a main entry point, does not expect to
556     *  receive data.
557     *  <p>Input: nothing
558     *  <p>Output: nothing
559     */
560    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
561    public static final String ACTION_MAIN = "android.intent.action.MAIN";
562
563    /**
564     * Activity Action: Display the data to the user.  This is the most common
565     * action performed on data -- it is the generic action you can use on
566     * a piece of data to get the most reasonable thing to occur.  For example,
567     * when used on a contacts entry it will view the entry; when used on a
568     * mailto: URI it will bring up a compose window filled with the information
569     * supplied by the URI; when used with a tel: URI it will invoke the
570     * dialer.
571     * <p>Input: {@link #getData} is URI from which to retrieve data.
572     * <p>Output: nothing.
573     */
574    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
575    public static final String ACTION_VIEW = "android.intent.action.VIEW";
576
577    /**
578     * A synonym for {@link #ACTION_VIEW}, the "standard" action that is
579     * performed on a piece of data.
580     */
581    public static final String ACTION_DEFAULT = ACTION_VIEW;
582
583    /**
584     * Used to indicate that some piece of data should be attached to some other
585     * place.  For example, image data could be attached to a contact.  It is up
586     * to the recipient to decide where the data should be attached; the intent
587     * does not specify the ultimate destination.
588     * <p>Input: {@link #getData} is URI of data to be attached.
589     * <p>Output: nothing.
590     */
591    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
592    public static final String ACTION_ATTACH_DATA = "android.intent.action.ATTACH_DATA";
593
594    /**
595     * Activity Action: Provide explicit editable access to the given data.
596     * <p>Input: {@link #getData} is URI of data to be edited.
597     * <p>Output: nothing.
598     */
599    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
600    public static final String ACTION_EDIT = "android.intent.action.EDIT";
601
602    /**
603     * Activity Action: Pick an existing item, or insert a new item, and then edit it.
604     * <p>Input: {@link #getType} is the desired MIME type of the item to create or edit.
605     * The extras can contain type specific data to pass through to the editing/creating
606     * activity.
607     * <p>Output: The URI of the item that was picked.  This must be a content:
608     * URI so that any receiver can access it.
609     */
610    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
611    public static final String ACTION_INSERT_OR_EDIT = "android.intent.action.INSERT_OR_EDIT";
612
613    /**
614     * Activity Action: Pick an item from the data, returning what was selected.
615     * <p>Input: {@link #getData} is URI containing a directory of data
616     * (vnd.android.cursor.dir/*) from which to pick an item.
617     * <p>Output: The URI of the item that was picked.
618     */
619    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
620    public static final String ACTION_PICK = "android.intent.action.PICK";
621
622    /**
623     * Activity Action: Creates a shortcut.
624     * <p>Input: Nothing.</p>
625     * <p>Output: An Intent representing the shortcut. The intent must contain three
626     * extras: SHORTCUT_INTENT (value: Intent), SHORTCUT_NAME (value: String),
627     * and SHORTCUT_ICON (value: Bitmap) or SHORTCUT_ICON_RESOURCE
628     * (value: ShortcutIconResource).</p>
629     *
630     * @see #EXTRA_SHORTCUT_INTENT
631     * @see #EXTRA_SHORTCUT_NAME
632     * @see #EXTRA_SHORTCUT_ICON
633     * @see #EXTRA_SHORTCUT_ICON_RESOURCE
634     * @see android.content.Intent.ShortcutIconResource
635     */
636    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
637    public static final String ACTION_CREATE_SHORTCUT = "android.intent.action.CREATE_SHORTCUT";
638
639    /**
640     * The name of the extra used to define the Intent of a shortcut.
641     *
642     * @see #ACTION_CREATE_SHORTCUT
643     */
644    public static final String EXTRA_SHORTCUT_INTENT = "android.intent.extra.shortcut.INTENT";
645    /**
646     * The name of the extra used to define the name of a shortcut.
647     *
648     * @see #ACTION_CREATE_SHORTCUT
649     */
650    public static final String EXTRA_SHORTCUT_NAME = "android.intent.extra.shortcut.NAME";
651    /**
652     * The name of the extra used to define the icon, as a Bitmap, of a shortcut.
653     *
654     * @see #ACTION_CREATE_SHORTCUT
655     */
656    public static final String EXTRA_SHORTCUT_ICON = "android.intent.extra.shortcut.ICON";
657    /**
658     * The name of the extra used to define the icon, as a ShortcutIconResource, of a shortcut.
659     *
660     * @see #ACTION_CREATE_SHORTCUT
661     * @see android.content.Intent.ShortcutIconResource
662     */
663    public static final String EXTRA_SHORTCUT_ICON_RESOURCE =
664            "android.intent.extra.shortcut.ICON_RESOURCE";
665
666    /**
667     * Represents a shortcut/live folder icon resource.
668     *
669     * @see Intent#ACTION_CREATE_SHORTCUT
670     * @see Intent#EXTRA_SHORTCUT_ICON_RESOURCE
671     * @see android.provider.LiveFolders#ACTION_CREATE_LIVE_FOLDER
672     * @see android.provider.LiveFolders#EXTRA_LIVE_FOLDER_ICON
673     */
674    public static class ShortcutIconResource implements Parcelable {
675        /**
676         * The package name of the application containing the icon.
677         */
678        public String packageName;
679
680        /**
681         * The resource name of the icon, including package, name and type.
682         */
683        public String resourceName;
684
685        /**
686         * Creates a new ShortcutIconResource for the specified context and resource
687         * identifier.
688         *
689         * @param context The context of the application.
690         * @param resourceId The resource idenfitier for the icon.
691         * @return A new ShortcutIconResource with the specified's context package name
692         *         and icon resource idenfitier.
693         */
694        public static ShortcutIconResource fromContext(Context context, int resourceId) {
695            ShortcutIconResource icon = new ShortcutIconResource();
696            icon.packageName = context.getPackageName();
697            icon.resourceName = context.getResources().getResourceName(resourceId);
698            return icon;
699        }
700
701        /**
702         * Used to read a ShortcutIconResource from a Parcel.
703         */
704        public static final Parcelable.Creator<ShortcutIconResource> CREATOR =
705            new Parcelable.Creator<ShortcutIconResource>() {
706
707                public ShortcutIconResource createFromParcel(Parcel source) {
708                    ShortcutIconResource icon = new ShortcutIconResource();
709                    icon.packageName = source.readString();
710                    icon.resourceName = source.readString();
711                    return icon;
712                }
713
714                public ShortcutIconResource[] newArray(int size) {
715                    return new ShortcutIconResource[size];
716                }
717            };
718
719        /**
720         * No special parcel contents.
721         */
722        public int describeContents() {
723            return 0;
724        }
725
726        public void writeToParcel(Parcel dest, int flags) {
727            dest.writeString(packageName);
728            dest.writeString(resourceName);
729        }
730
731        @Override
732        public String toString() {
733            return resourceName;
734        }
735    }
736
737    /**
738     * Activity Action: Display an activity chooser, allowing the user to pick
739     * what they want to before proceeding.  This can be used as an alternative
740     * to the standard activity picker that is displayed by the system when
741     * you try to start an activity with multiple possible matches, with these
742     * differences in behavior:
743     * <ul>
744     * <li>You can specify the title that will appear in the activity chooser.
745     * <li>The user does not have the option to make one of the matching
746     * activities a preferred activity, and all possible activities will
747     * always be shown even if one of them is currently marked as the
748     * preferred activity.
749     * </ul>
750     * <p>
751     * This action should be used when the user will naturally expect to
752     * select an activity in order to proceed.  An example if when not to use
753     * it is when the user clicks on a "mailto:" link.  They would naturally
754     * expect to go directly to their mail app, so startActivity() should be
755     * called directly: it will
756     * either launch the current preferred app, or put up a dialog allowing the
757     * user to pick an app to use and optionally marking that as preferred.
758     * <p>
759     * In contrast, if the user is selecting a menu item to send a picture
760     * they are viewing to someone else, there are many different things they
761     * may want to do at this point: send it through e-mail, upload it to a
762     * web service, etc.  In this case the CHOOSER action should be used, to
763     * always present to the user a list of the things they can do, with a
764     * nice title given by the caller such as "Send this photo with:".
765     * <p>
766     * As a convenience, an Intent of this form can be created with the
767     * {@link #createChooser} function.
768     * <p>Input: No data should be specified.  get*Extra must have
769     * a {@link #EXTRA_INTENT} field containing the Intent being executed,
770     * and can optionally have a {@link #EXTRA_TITLE} field containing the
771     * title text to display in the chooser.
772     * <p>Output: Depends on the protocol of {@link #EXTRA_INTENT}.
773     */
774    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
775    public static final String ACTION_CHOOSER = "android.intent.action.CHOOSER";
776
777    /**
778     * Convenience function for creating a {@link #ACTION_CHOOSER} Intent.
779     *
780     * @param target The Intent that the user will be selecting an activity
781     * to perform.
782     * @param title Optional title that will be displayed in the chooser.
783     * @return Return a new Intent object that you can hand to
784     * {@link Context#startActivity(Intent) Context.startActivity()} and
785     * related methods.
786     */
787    public static Intent createChooser(Intent target, CharSequence title) {
788        Intent intent = new Intent(ACTION_CHOOSER);
789        intent.putExtra(EXTRA_INTENT, target);
790        if (title != null) {
791            intent.putExtra(EXTRA_TITLE, title);
792        }
793        return intent;
794    }
795    /**
796     * Activity Action: Allow the user to select a particular kind of data and
797     * return it.  This is different than {@link #ACTION_PICK} in that here we
798     * just say what kind of data is desired, not a URI of existing data from
799     * which the user can pick.  A ACTION_GET_CONTENT could allow the user to
800     * create the data as it runs (for example taking a picture or recording a
801     * sound), let them browser over the web and download the desired data,
802     * etc.
803     * <p>
804     * There are two main ways to use this action: if you want an specific kind
805     * of data, such as a person contact, you set the MIME type to the kind of
806     * data you want and launch it with {@link Context#startActivity(Intent)}.
807     * The system will then launch the best application to select that kind
808     * of data for you.
809     * <p>
810     * You may also be interested in any of a set of types of content the user
811     * can pick.  For example, an e-mail application that wants to allow the
812     * user to add an attachment to an e-mail message can use this action to
813     * bring up a list of all of the types of content the user can attach.
814     * <p>
815     * In this case, you should wrap the GET_CONTENT intent with a chooser
816     * (through {@link #createChooser}), which will give the proper interface
817     * for the user to pick how to send your data and allow you to specify
818     * a prompt indicating what they are doing.  You will usually specify a
819     * broad MIME type (such as image/* or {@literal *}/*), resulting in a
820     * broad range of content types the user can select from.
821     * <p>
822     * When using such a broad GET_CONTENT action, it is often desireable to
823     * only pick from data that can be represented as a stream.  This is
824     * accomplished by requiring the {@link #CATEGORY_OPENABLE} in the Intent.
825     * <p>
826     * Input: {@link #getType} is the desired MIME type to retrieve.  Note
827     * that no URI is supplied in the intent, as there are no constraints on
828     * where the returned data originally comes from.  You may also include the
829     * {@link #CATEGORY_OPENABLE} if you can only accept data that can be
830     * opened as a stream.
831     * <p>
832     * Output: The URI of the item that was picked.  This must be a content:
833     * URI so that any receiver can access it.
834     */
835    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
836    public static final String ACTION_GET_CONTENT = "android.intent.action.GET_CONTENT";
837    /**
838     * Activity Action: Dial a number as specified by the data.  This shows a
839     * UI with the number being dialed, allowing the user to explicitly
840     * initiate the call.
841     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
842     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
843     * number.
844     * <p>Output: nothing.
845     */
846    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
847    public static final String ACTION_DIAL = "android.intent.action.DIAL";
848    /**
849     * Activity Action: Perform a call to someone specified by the data.
850     * <p>Input: If nothing, an empty dialer is started; else {@link #getData}
851     * is URI of a phone number to be dialed or a tel: URI of an explicit phone
852     * number.
853     * <p>Output: nothing.
854     *
855     * <p>Note: there will be restrictions on which applications can initiate a
856     * call; most applications should use the {@link #ACTION_DIAL}.
857     * <p>Note: this Intent <strong>cannot</strong> be used to call emergency
858     * numbers.  Applications can <strong>dial</strong> emergency numbers using
859     * {@link #ACTION_DIAL}, however.
860     */
861    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
862    public static final String ACTION_CALL = "android.intent.action.CALL";
863    /**
864     * Activity Action: Perform a call to an emergency number specified by the
865     * data.
866     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
867     * tel: URI of an explicit phone number.
868     * <p>Output: nothing.
869     * @hide
870     */
871    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY";
872    /**
873     * Activity action: Perform a call to any number (emergency or not)
874     * specified by the data.
875     * <p>Input: {@link #getData} is URI of a phone number to be dialed or a
876     * tel: URI of an explicit phone number.
877     * <p>Output: nothing.
878     * @hide
879     */
880    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";
881    /**
882     * Activity Action: Send a message to someone specified by the data.
883     * <p>Input: {@link #getData} is URI describing the target.
884     * <p>Output: nothing.
885     */
886    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
887    public static final String ACTION_SENDTO = "android.intent.action.SENDTO";
888    /**
889     * Activity Action: Deliver some data to someone else.  Who the data is
890     * being delivered to is not specified; it is up to the receiver of this
891     * action to ask the user where the data should be sent.
892     * <p>
893     * When launching a SEND intent, you should usually wrap it in a chooser
894     * (through {@link #createChooser}), which will give the proper interface
895     * for the user to pick how to send your data and allow you to specify
896     * a prompt indicating what they are doing.
897     * <p>
898     * Input: {@link #getType} is the MIME type of the data being sent.
899     * get*Extra can have either a {@link #EXTRA_TEXT}
900     * or {@link #EXTRA_STREAM} field, containing the data to be sent.  If
901     * using EXTRA_TEXT, the MIME type should be "text/plain"; otherwise it
902     * should be the MIME type of the data in EXTRA_STREAM.  Use {@literal *}/*
903     * if the MIME type is unknown (this will only allow senders that can
904     * handle generic data streams).
905     * <p>
906     * Optional standard extras, which may be interpreted by some recipients as
907     * appropriate, are: {@link #EXTRA_EMAIL}, {@link #EXTRA_CC},
908     * {@link #EXTRA_BCC}, {@link #EXTRA_SUBJECT}.
909     * <p>
910     * Output: nothing.
911     */
912    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
913    public static final String ACTION_SEND = "android.intent.action.SEND";
914    /**
915     * Activity Action: Handle an incoming phone call.
916     * <p>Input: nothing.
917     * <p>Output: nothing.
918     */
919    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
920    public static final String ACTION_ANSWER = "android.intent.action.ANSWER";
921    /**
922     * Activity Action: Insert an empty item into the given container.
923     * <p>Input: {@link #getData} is URI of the directory (vnd.android.cursor.dir/*)
924     * in which to place the data.
925     * <p>Output: URI of the new data that was created.
926     */
927    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
928    public static final String ACTION_INSERT = "android.intent.action.INSERT";
929    /**
930     * Activity Action: Delete the given data from its container.
931     * <p>Input: {@link #getData} is URI of data to be deleted.
932     * <p>Output: nothing.
933     */
934    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
935    public static final String ACTION_DELETE = "android.intent.action.DELETE";
936    /**
937     * Activity Action: Run the data, whatever that means.
938     * <p>Input: ?  (Note: this is currently specific to the test harness.)
939     * <p>Output: nothing.
940     */
941    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
942    public static final String ACTION_RUN = "android.intent.action.RUN";
943    /**
944     * Activity Action: Perform a data synchronization.
945     * <p>Input: ?
946     * <p>Output: ?
947     */
948    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
949    public static final String ACTION_SYNC = "android.intent.action.SYNC";
950    /**
951     * Activity Action: Pick an activity given an intent, returning the class
952     * selected.
953     * <p>Input: get*Extra field {@link #EXTRA_INTENT} is an Intent
954     * used with {@link PackageManager#queryIntentActivities} to determine the
955     * set of activities from which to pick.
956     * <p>Output: Class name of the activity that was selected.
957     */
958    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
959    public static final String ACTION_PICK_ACTIVITY = "android.intent.action.PICK_ACTIVITY";
960    /**
961     * Activity Action: Perform a search.
962     * <p>Input: {@link android.app.SearchManager#QUERY getStringExtra(SearchManager.QUERY)}
963     * is the text to search for.  If empty, simply
964     * enter your search results Activity with the search UI activated.
965     * <p>Output: nothing.
966     */
967    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
968    public static final String ACTION_SEARCH = "android.intent.action.SEARCH";
969    /**
970     * Activity Action: Perform a web search.
971     * <p>
972     * Input: {@link android.app.SearchManager#QUERY
973     * getStringExtra(SearchManager.QUERY)} is the text to search for. If it is
974     * a url starts with http or https, the site will be opened. If it is plain
975     * text, Google search will be applied.
976     * <p>
977     * Output: nothing.
978     */
979    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
980    public static final String ACTION_WEB_SEARCH = "android.intent.action.WEB_SEARCH";
981    /**
982     * Activity Action: List all available applications
983     * <p>Input: Nothing.
984     * <p>Output: nothing.
985     */
986    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
987    public static final String ACTION_ALL_APPS = "android.intent.action.ALL_APPS";
988    /**
989     * Activity Action: Show settings for choosing wallpaper
990     * <p>Input: Nothing.
991     * <p>Output: Nothing.
992     */
993    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
994    public static final String ACTION_SET_WALLPAPER = "android.intent.action.SET_WALLPAPER";
995
996    /**
997     * Activity Action: Show activity for reporting a bug.
998     * <p>Input: Nothing.
999     * <p>Output: Nothing.
1000     */
1001    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1002    public static final String ACTION_BUG_REPORT = "android.intent.action.BUG_REPORT";
1003
1004    /**
1005     *  Activity Action: Main entry point for factory tests.  Only used when
1006     *  the device is booting in factory test node.  The implementing package
1007     *  must be installed in the system image.
1008     *  <p>Input: nothing
1009     *  <p>Output: nothing
1010     */
1011    public static final String ACTION_FACTORY_TEST = "android.intent.action.FACTORY_TEST";
1012
1013    /**
1014     * Activity Action: The user pressed the "call" button to go to the dialer
1015     * or other appropriate UI for placing a call.
1016     * <p>Input: Nothing.
1017     * <p>Output: Nothing.
1018     */
1019    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1020    public static final String ACTION_CALL_BUTTON = "android.intent.action.CALL_BUTTON";
1021
1022    /**
1023     * Activity Action: Start Voice Command.
1024     * <p>Input: Nothing.
1025     * <p>Output: Nothing.
1026     */
1027    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
1028    public static final String ACTION_VOICE_COMMAND = "android.intent.action.VOICE_COMMAND";
1029
1030    // ---------------------------------------------------------------------
1031    // ---------------------------------------------------------------------
1032    // Standard intent broadcast actions (see action variable).
1033
1034    /**
1035     * Broadcast Action: Sent after the screen turns off.
1036     */
1037    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1038    public static final String ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF";
1039    /**
1040     * Broadcast Action: Sent after the screen turns on.
1041     */
1042    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1043    public static final String ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON";
1044    /**
1045     * Broadcast Action: The current time has changed.  Sent every
1046     * minute.  You can <em>not</em> receive this through components declared
1047     * in manifests, only by exlicitly registering for it with
1048     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1049     * Context.registerReceiver()}.
1050     */
1051    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1052    public static final String ACTION_TIME_TICK = "android.intent.action.TIME_TICK";
1053    /**
1054     * Broadcast Action: The time was set.
1055     */
1056    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1057    public static final String ACTION_TIME_CHANGED = "android.intent.action.TIME_SET";
1058    /**
1059     * Broadcast Action: The date has changed.
1060     */
1061    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1062    public static final String ACTION_DATE_CHANGED = "android.intent.action.DATE_CHANGED";
1063    /**
1064     * Broadcast Action: The timezone has changed. The intent will have the following extra values:</p>
1065     * <ul>
1066     *   <li><em>time-zone</em> - The java.util.TimeZone.getID() value identifying the new time zone.</li>
1067     * </ul>
1068     */
1069    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1070    public static final String ACTION_TIMEZONE_CHANGED = "android.intent.action.TIMEZONE_CHANGED";
1071    /**
1072     * Alarm Changed Action: This is broadcast when the AlarmClock
1073     * application's alarm is set or unset.  It is used by the
1074     * AlarmClock application and the StatusBar service.
1075     * @hide
1076     */
1077    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1078    public static final String ACTION_ALARM_CHANGED = "android.intent.action.ALARM_CHANGED";
1079    /**
1080     * Sync State Changed Action: This is broadcast when the sync starts or stops or when one has
1081     * been failing for a long time.  It is used by the SyncManager and the StatusBar service.
1082     * @hide
1083     */
1084    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1085    public static final String ACTION_SYNC_STATE_CHANGED
1086            = "android.intent.action.SYNC_STATE_CHANGED";
1087    /**
1088     * Broadcast Action: This is broadcast once, after the system has finished
1089     * booting.  It can be used to perform application-specific initialization,
1090     * such as installing alarms.  You must hold the
1091     * {@link android.Manifest.permission#RECEIVE_BOOT_COMPLETED} permission
1092     * in order to receive this broadcast.
1093     */
1094    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1095    public static final String ACTION_BOOT_COMPLETED = "android.intent.action.BOOT_COMPLETED";
1096    /**
1097     * Broadcast Action: This is broadcast when a user action should request a
1098     * temporary system dialog to dismiss.  Some examples of temporary system
1099     * dialogs are the notification window-shade and the recent tasks dialog.
1100     */
1101    public static final String ACTION_CLOSE_SYSTEM_DIALOGS = "android.intent.action.CLOSE_SYSTEM_DIALOGS";
1102    /**
1103     * Broadcast Action: Trigger the download and eventual installation
1104     * of a package.
1105     * <p>Input: {@link #getData} is the URI of the package file to download.
1106     */
1107    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1108    public static final String ACTION_PACKAGE_INSTALL = "android.intent.action.PACKAGE_INSTALL";
1109    /**
1110     * Broadcast Action: A new application package has been installed on the
1111     * device. The data contains the name of the package.
1112     */
1113    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1114    public static final String ACTION_PACKAGE_ADDED = "android.intent.action.PACKAGE_ADDED";
1115    /**
1116     * Broadcast Action: An existing application package has been removed from
1117     * the device.  The data contains the name of the package.  The package
1118     * that is being installed does <em>not</em> receive this Intent.
1119     */
1120    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1121    public static final String ACTION_PACKAGE_REMOVED = "android.intent.action.PACKAGE_REMOVED";
1122    /**
1123     * Broadcast Action: An existing application package has been changed (e.g. a component has been
1124     * enabled or disabled.  The data contains the name of the package.
1125     */
1126    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1127    public static final String ACTION_PACKAGE_CHANGED = "android.intent.action.PACKAGE_CHANGED";
1128    /**
1129     * Broadcast Action: The user has restarted a package, all runtime state
1130     * associated with it (processes, alarms, notifications, etc) should
1131     * be remove.  The data contains the name of the package.
1132     */
1133    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1134    public static final String ACTION_PACKAGE_RESTARTED = "android.intent.action.PACKAGE_RESTARTED";
1135    /**
1136     * Broadcast Action: A user ID has been removed from the system.  The user
1137     * ID number is stored in the extra data under {@link #EXTRA_UID}.
1138     */
1139    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1140    public static final String ACTION_UID_REMOVED = "android.intent.action.UID_REMOVED";
1141    /**
1142     * Broadcast Action:  The current system wallpaper has changed.  See
1143     * {@link Context#getWallpaper} for retrieving the new wallpaper.
1144     */
1145    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1146    public static final String ACTION_WALLPAPER_CHANGED = "android.intent.action.WALLPAPER_CHANGED";
1147    /**
1148     * Broadcast Action: The current device {@link android.content.res.Configuration}
1149     * (orientation, locale, etc) has changed.  When such a change happens, the
1150     * UIs (view hierarchy) will need to be rebuilt based on this new
1151     * information; for the most part, applications don't need to worry about
1152     * this, because the system will take care of stopping and restarting the
1153     * application to make sure it sees the new changes.  Some system code that
1154     * can not be restarted will need to watch for this action and handle it
1155     * appropriately.
1156     *
1157     * @see android.content.res.Configuration
1158     */
1159    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1160    public static final String ACTION_CONFIGURATION_CHANGED = "android.intent.action.CONFIGURATION_CHANGED";
1161    /**
1162     * Broadcast Action:  The charging state, or charge level of the battery has
1163     * changed.
1164     *
1165     * <p class="note">
1166     * You can <em>not</em> receive this through components declared
1167     * in manifests, only by exlicitly registering for it with
1168     * {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
1169     * Context.registerReceiver()}.
1170     */
1171    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1172    public static final String ACTION_BATTERY_CHANGED = "android.intent.action.BATTERY_CHANGED";
1173    /**
1174     * Broadcast Action:  Indicates low battery condition on the device.
1175     * This broadcast corresponds to the "Low battery warning" system dialog.
1176     */
1177    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1178    public static final String ACTION_BATTERY_LOW = "android.intent.action.BATTERY_LOW";
1179    /**
1180     * Broadcast Action:  External power has been connected to the device.
1181     * This is intended for applications that wish to register specifically to this notification.
1182     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1183     * stay active to receive this notification.  This action can be used to implement actions
1184     * that wait until power is available to trigger.
1185     */
1186    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1187    public static final String ACTION_POWER_CONNECTED = "android.intent.action.POWER_CONNECTED";
1188    /**
1189     * Broadcast Action:  External power has been removed from the device.
1190     * This is intended for applications that wish to register specifically to this notification.
1191     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to
1192     * stay active to receive this notification.  This action can be used to implement actions
1193     * that wait until power is available to trigger.
1194     */
1195    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1196    public static final String ACTION_POWER_DISCONNECTED =
1197            "android.intent.action.POWER_DISCONNECTED";
1198    /**
1199     * Broadcast Action:  Indicates low memory condition on the device
1200     */
1201    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1202    public static final String ACTION_DEVICE_STORAGE_LOW = "android.intent.action.DEVICE_STORAGE_LOW";
1203    /**
1204     * Broadcast Action:  Indicates low memory condition on the device no longer exists
1205     */
1206    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1207    public static final String ACTION_DEVICE_STORAGE_OK = "android.intent.action.DEVICE_STORAGE_OK";
1208    /**
1209     * Broadcast Action:  Indicates low memory condition notification acknowledged by user
1210     * and package management should be started.
1211     * This is triggered by the user from the ACTION_DEVICE_STORAGE_LOW
1212     * notification.
1213     */
1214    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1215    public static final String ACTION_MANAGE_PACKAGE_STORAGE = "android.intent.action.MANAGE_PACKAGE_STORAGE";
1216    /**
1217     * Broadcast Action:  The device has entered USB Mass Storage mode.
1218     * This is used mainly for the USB Settings panel.
1219     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1220     * when the SD card file system is mounted or unmounted
1221     */
1222    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1223    public static final String ACTION_UMS_CONNECTED = "android.intent.action.UMS_CONNECTED";
1224
1225    /**
1226     * Broadcast Action:  The device has exited USB Mass Storage mode.
1227     * This is used mainly for the USB Settings panel.
1228     * Apps should listen for ACTION_MEDIA_MOUNTED and ACTION_MEDIA_UNMOUNTED broadcasts to be notified
1229     * when the SD card file system is mounted or unmounted
1230     */
1231    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1232    public static final String ACTION_UMS_DISCONNECTED = "android.intent.action.UMS_DISCONNECTED";
1233
1234    /**
1235     * Broadcast Action:  External media has been removed.
1236     * The path to the mount point for the removed media is contained in the Intent.mData field.
1237     */
1238    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1239    public static final String ACTION_MEDIA_REMOVED = "android.intent.action.MEDIA_REMOVED";
1240
1241    /**
1242     * Broadcast Action:  External media is present, but not mounted at its mount point.
1243     * The path to the mount point for the removed media is contained in the Intent.mData field.
1244     */
1245    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1246    public static final String ACTION_MEDIA_UNMOUNTED = "android.intent.action.MEDIA_UNMOUNTED";
1247
1248    /**
1249     * Broadcast Action:  External media is present, and being disk-checked
1250     * The path to the mount point for the checking media is contained in the Intent.mData field.
1251     * @hide
1252     */
1253    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1254    public static final String ACTION_MEDIA_CHECKING = "android.intent.action.MEDIA_CHECKING";
1255
1256    /**
1257     * Broadcast Action:  External media is present, but is using an incompatible fs (or is blank)
1258     * The path to the mount point for the checking media is contained in the Intent.mData field.
1259     * @hide
1260     */
1261    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1262    public static final String ACTION_MEDIA_NOFS = "android.intent.action.MEDIA_NOFS";
1263
1264    /**
1265     * Broadcast Action:  External media is present and mounted at its mount point.
1266     * The path to the mount point for the removed media is contained in the Intent.mData field.
1267     * The Intent contains an extra with name "read-only" and Boolean value to indicate if the
1268     * media was mounted read only.
1269     */
1270    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1271    public static final String ACTION_MEDIA_MOUNTED = "android.intent.action.MEDIA_MOUNTED";
1272
1273    /**
1274     * Broadcast Action:  External media is unmounted because it is being shared via USB mass storage.
1275     * The path to the mount point for the removed media is contained in the Intent.mData field.
1276     */
1277    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1278    public static final String ACTION_MEDIA_SHARED = "android.intent.action.MEDIA_SHARED";
1279
1280    /**
1281     * Broadcast Action:  External media was removed from SD card slot, but mount point was not unmounted.
1282     * The path to the mount point for the removed media is contained in the Intent.mData field.
1283     */
1284    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1285    public static final String ACTION_MEDIA_BAD_REMOVAL = "android.intent.action.MEDIA_BAD_REMOVAL";
1286
1287    /**
1288     * Broadcast Action:  External media is present but cannot be mounted.
1289     * The path to the mount point for the removed media is contained in the Intent.mData field.
1290     */
1291    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1292    public static final String ACTION_MEDIA_UNMOUNTABLE = "android.intent.action.MEDIA_UNMOUNTABLE";
1293
1294   /**
1295     * Broadcast Action:  User has expressed the desire to remove the external storage media.
1296     * Applications should close all files they have open within the mount point when they receive this intent.
1297     * The path to the mount point for the media to be ejected is contained in the Intent.mData field.
1298     */
1299    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1300    public static final String ACTION_MEDIA_EJECT = "android.intent.action.MEDIA_EJECT";
1301
1302    /**
1303     * Broadcast Action:  The media scanner has started scanning a directory.
1304     * The path to the directory being scanned is contained in the Intent.mData field.
1305     */
1306    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1307    public static final String ACTION_MEDIA_SCANNER_STARTED = "android.intent.action.MEDIA_SCANNER_STARTED";
1308
1309   /**
1310     * Broadcast Action:  The media scanner has finished scanning a directory.
1311     * The path to the scanned directory is contained in the Intent.mData field.
1312     */
1313    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1314    public static final String ACTION_MEDIA_SCANNER_FINISHED = "android.intent.action.MEDIA_SCANNER_FINISHED";
1315
1316   /**
1317     * Broadcast Action:  Request the media scanner to scan a file and add it to the media database.
1318     * The path to the file is contained in the Intent.mData field.
1319     */
1320    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1321    public static final String ACTION_MEDIA_SCANNER_SCAN_FILE = "android.intent.action.MEDIA_SCANNER_SCAN_FILE";
1322
1323   /**
1324     * Broadcast Action:  The "Media Button" was pressed.  Includes a single
1325     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1326     * caused the broadcast.
1327     */
1328    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1329    public static final String ACTION_MEDIA_BUTTON = "android.intent.action.MEDIA_BUTTON";
1330
1331    /**
1332     * Broadcast Action:  The "Camera Button" was pressed.  Includes a single
1333     * extra field, {@link #EXTRA_KEY_EVENT}, containing the key event that
1334     * caused the broadcast.
1335     */
1336    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1337    public static final String ACTION_CAMERA_BUTTON = "android.intent.action.CAMERA_BUTTON";
1338
1339    // *** NOTE: @todo(*) The following really should go into a more domain-specific
1340    // location; they are not general-purpose actions.
1341
1342    /**
1343     * Broadcast Action: An GTalk connection has been established.
1344     */
1345    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1346    public static final String ACTION_GTALK_SERVICE_CONNECTED =
1347            "android.intent.action.GTALK_CONNECTED";
1348
1349    /**
1350     * Broadcast Action: An GTalk connection has been disconnected.
1351     */
1352    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1353    public static final String ACTION_GTALK_SERVICE_DISCONNECTED =
1354            "android.intent.action.GTALK_DISCONNECTED";
1355
1356    /**
1357     * Broadcast Action: An input method has been changed.
1358     * {@hide pending API Council approval}
1359     */
1360    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1361    public static final String ACTION_INPUT_METHOD_CHANGED =
1362            "android.intent.action.INPUT_METHOD_CHANGED";
1363
1364    /**
1365     * <p>Broadcast Action: The user has switched the phone into or out of Airplane Mode. One or
1366     * more radios have been turned off or on. The intent will have the following extra value:</p>
1367     * <ul>
1368     *   <li><em>state</em> - A boolean value indicating whether Airplane Mode is on. If true,
1369     *   then cell radio and possibly other radios such as bluetooth or WiFi may have also been
1370     *   turned off</li>
1371     * </ul>
1372     */
1373    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1374    public static final String ACTION_AIRPLANE_MODE_CHANGED = "android.intent.action.AIRPLANE_MODE";
1375
1376    /**
1377     * Broadcast Action: Some content providers have parts of their namespace
1378     * where they publish new events or items that the user may be especially
1379     * interested in. For these things, they may broadcast this action when the
1380     * set of interesting items change.
1381     *
1382     * For example, GmailProvider sends this notification when the set of unread
1383     * mail in the inbox changes.
1384     *
1385     * <p>The data of the intent identifies which part of which provider
1386     * changed. When queried through the content resolver, the data URI will
1387     * return the data set in question.
1388     *
1389     * <p>The intent will have the following extra values:
1390     * <ul>
1391     *   <li><em>count</em> - The number of items in the data set. This is the
1392     *       same as the number of items in the cursor returned by querying the
1393     *       data URI. </li>
1394     * </ul>
1395     *
1396     * This intent will be sent at boot (if the count is non-zero) and when the
1397     * data set changes. It is possible for the data set to change without the
1398     * count changing (for example, if a new unread message arrives in the same
1399     * sync operation in which a message is archived). The phone should still
1400     * ring/vibrate/etc as normal in this case.
1401     */
1402    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1403    public static final String ACTION_PROVIDER_CHANGED =
1404            "android.intent.action.PROVIDER_CHANGED";
1405
1406    /**
1407     * Broadcast Action: Wired Headset plugged in or unplugged.
1408     *
1409     * <p>The intent will have the following extra values:
1410     * <ul>
1411     *   <li><em>state</em> - 0 for unplugged, 1 for plugged. </li>
1412     *   <li><em>name</em> - Headset type, human readable string </li>
1413     * </ul>
1414     * </ul>
1415     */
1416    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1417    public static final String ACTION_HEADSET_PLUG =
1418            "android.intent.action.HEADSET_PLUG";
1419
1420    /**
1421     * Broadcast Action: An outgoing call is about to be placed.
1422     *
1423     * <p>The Intent will have the following extra value:
1424     * <ul>
1425     *   <li><em>{@link android.content.Intent#EXTRA_PHONE_NUMBER}</em> -
1426     *       the phone number originally intended to be dialed.</li>
1427     * </ul>
1428     * <p>Once the broadcast is finished, the resultData is used as the actual
1429     * number to call.  If  <code>null</code>, no call will be placed.</p>
1430     * <p>It is perfectly acceptable for multiple receivers to process the
1431     * outgoing call in turn: for example, a parental control application
1432     * might verify that the user is authorized to place the call at that
1433     * time, then a number-rewriting application might add an area code if
1434     * one was not specified.</p>
1435     * <p>For consistency, any receiver whose purpose is to prohibit phone
1436     * calls should have a priority of 0, to ensure it will see the final
1437     * phone number to be dialed.
1438     * Any receiver whose purpose is to rewrite phone numbers to be called
1439     * should have a positive priority.
1440     * Negative priorities are reserved for the system for this broadcast;
1441     * using them may cause problems.</p>
1442     * <p>Any BroadcastReceiver receiving this Intent <em>must not</em>
1443     * abort the broadcast.</p>
1444     * <p>Emergency calls cannot be intercepted using this mechanism, and
1445     * other calls cannot be modified to call emergency numbers using this
1446     * mechanism.
1447     * <p>You must hold the
1448     * {@link android.Manifest.permission#PROCESS_OUTGOING_CALLS}
1449     * permission to receive this Intent.</p>
1450     */
1451    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1452    public static final String ACTION_NEW_OUTGOING_CALL =
1453            "android.intent.action.NEW_OUTGOING_CALL";
1454
1455    /**
1456     * Broadcast Action: Have the device reboot.  This is only for use by
1457     * system code.
1458     */
1459    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
1460    public static final String ACTION_REBOOT =
1461            "android.intent.action.REBOOT";
1462
1463    // ---------------------------------------------------------------------
1464    // ---------------------------------------------------------------------
1465    // Standard intent categories (see addCategory()).
1466
1467    /**
1468     * Set if the activity should be an option for the default action
1469     * (center press) to perform on a piece of data.  Setting this will
1470     * hide from the user any activities without it set when performing an
1471     * action on some data.  Note that this is normal -not- set in the
1472     * Intent when initiating an action -- it is for use in intent filters
1473     * specified in packages.
1474     */
1475    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1476    public static final String CATEGORY_DEFAULT = "android.intent.category.DEFAULT";
1477    /**
1478     * Activities that can be safely invoked from a browser must support this
1479     * category.  For example, if the user is viewing a web page or an e-mail
1480     * and clicks on a link in the text, the Intent generated execute that
1481     * link will require the BROWSABLE category, so that only activities
1482     * supporting this category will be considered as possible actions.  By
1483     * supporting this category, you are promising that there is nothing
1484     * damaging (without user intervention) that can happen by invoking any
1485     * matching Intent.
1486     */
1487    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1488    public static final String CATEGORY_BROWSABLE = "android.intent.category.BROWSABLE";
1489    /**
1490     * Set if the activity should be considered as an alternative action to
1491     * the data the user is currently viewing.  See also
1492     * {@link #CATEGORY_SELECTED_ALTERNATIVE} for an alternative action that
1493     * applies to the selection in a list of items.
1494     *
1495     * <p>Supporting this category means that you would like your activity to be
1496     * displayed in the set of alternative things the user can do, usually as
1497     * part of the current activity's options menu.  You will usually want to
1498     * include a specific label in the &lt;intent-filter&gt; of this action
1499     * describing to the user what it does.
1500     *
1501     * <p>The action of IntentFilter with this category is important in that it
1502     * describes the specific action the target will perform.  This generally
1503     * should not be a generic action (such as {@link #ACTION_VIEW}, but rather
1504     * a specific name such as "com.android.camera.action.CROP.  Only one
1505     * alternative of any particular action will be shown to the user, so using
1506     * a specific action like this makes sure that your alternative will be
1507     * displayed while also allowing other applications to provide their own
1508     * overrides of that particular action.
1509     */
1510    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1511    public static final String CATEGORY_ALTERNATIVE = "android.intent.category.ALTERNATIVE";
1512    /**
1513     * Set if the activity should be considered as an alternative selection
1514     * action to the data the user has currently selected.  This is like
1515     * {@link #CATEGORY_ALTERNATIVE}, but is used in activities showing a list
1516     * of items from which the user can select, giving them alternatives to the
1517     * default action that will be performed on it.
1518     */
1519    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1520    public static final String CATEGORY_SELECTED_ALTERNATIVE = "android.intent.category.SELECTED_ALTERNATIVE";
1521    /**
1522     * Intended to be used as a tab inside of an containing TabActivity.
1523     */
1524    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1525    public static final String CATEGORY_TAB = "android.intent.category.TAB";
1526    /**
1527     * This activity can be embedded inside of another activity that is hosting
1528     * gadgets.
1529     */
1530    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1531    public static final String CATEGORY_GADGET = "android.intent.category.GADGET";
1532    /**
1533     * Should be displayed in the top-level launcher.
1534     */
1535    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1536    public static final String CATEGORY_LAUNCHER = "android.intent.category.LAUNCHER";
1537    /**
1538     * This is the home activity, that is the first activity that is displayed
1539     * when the device boots.
1540     */
1541    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1542    public static final String CATEGORY_HOME = "android.intent.category.HOME";
1543    /**
1544     * This activity is a preference panel.
1545     */
1546    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1547    public static final String CATEGORY_PREFERENCE = "android.intent.category.PREFERENCE";
1548    /**
1549     * This activity is a development preference panel.
1550     */
1551    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1552    public static final String CATEGORY_DEVELOPMENT_PREFERENCE = "android.intent.category.DEVELOPMENT_PREFERENCE";
1553    /**
1554     * Capable of running inside a parent activity container.
1555     *
1556     * <p>Note: being removed in favor of more explicit categories such as
1557     * CATEGORY_GADGET
1558     */
1559    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1560    public static final String CATEGORY_EMBED = "android.intent.category.EMBED";
1561    /**
1562     * This activity may be exercised by the monkey or other automated test tools.
1563     */
1564    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1565    public static final String CATEGORY_MONKEY = "android.intent.category.MONKEY";
1566    /**
1567     * To be used as a test (not part of the normal user experience).
1568     */
1569    public static final String CATEGORY_TEST = "android.intent.category.TEST";
1570    /**
1571     * To be used as a unit test (run through the Test Harness).
1572     */
1573    public static final String CATEGORY_UNIT_TEST = "android.intent.category.UNIT_TEST";
1574    /**
1575     * To be used as an sample code example (not part of the normal user
1576     * experience).
1577     */
1578    public static final String CATEGORY_SAMPLE_CODE = "android.intent.category.SAMPLE_CODE";
1579    /**
1580     * Used to indicate that a GET_CONTENT intent only wants URIs that can be opened with
1581     * ContentResolver.openInputStream. Openable URIs must support the columns in OpenableColumns
1582     * when queried, though it is allowable for those columns to be blank.
1583     */
1584    @SdkConstant(SdkConstantType.INTENT_CATEGORY)
1585    public static final String CATEGORY_OPENABLE = "android.intent.category.OPENABLE";
1586
1587    /**
1588     * To be used as code under test for framework instrumentation tests.
1589     */
1590    public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
1591            "android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
1592    // ---------------------------------------------------------------------
1593    // ---------------------------------------------------------------------
1594    // Standard extra data keys.
1595
1596    /**
1597     * The initial data to place in a newly created record.  Use with
1598     * {@link #ACTION_INSERT}.  The data here is a Map containing the same
1599     * fields as would be given to the underlying ContentProvider.insert()
1600     * call.
1601     */
1602    public static final String EXTRA_TEMPLATE = "android.intent.extra.TEMPLATE";
1603
1604    /**
1605     * A constant CharSequence that is associated with the Intent, used with
1606     * {@link #ACTION_SEND} to supply the literal data to be sent.  Note that
1607     * this may be a styled CharSequence, so you must use
1608     * {@link Bundle#getCharSequence(String) Bundle.getCharSequence()} to
1609     * retrieve it.
1610     */
1611    public static final String EXTRA_TEXT = "android.intent.extra.TEXT";
1612
1613    /**
1614     * A content: URI holding a stream of data associated with the Intent,
1615     * used with {@link #ACTION_SEND} to supply the data being sent.
1616     */
1617    public static final String EXTRA_STREAM = "android.intent.extra.STREAM";
1618
1619    /**
1620     * A String[] holding e-mail addresses that should be delivered to.
1621     */
1622    public static final String EXTRA_EMAIL       = "android.intent.extra.EMAIL";
1623
1624    /**
1625     * A String[] holding e-mail addresses that should be carbon copied.
1626     */
1627    public static final String EXTRA_CC       = "android.intent.extra.CC";
1628
1629    /**
1630     * A String[] holding e-mail addresses that should be blind carbon copied.
1631     */
1632    public static final String EXTRA_BCC      = "android.intent.extra.BCC";
1633
1634    /**
1635     * A constant string holding the desired subject line of a message.
1636     */
1637    public static final String EXTRA_SUBJECT  = "android.intent.extra.SUBJECT";
1638
1639    /**
1640     * An Intent describing the choices you would like shown with
1641     * {@link #ACTION_PICK_ACTIVITY}.
1642     */
1643    public static final String EXTRA_INTENT = "android.intent.extra.INTENT";
1644
1645    /**
1646     * A CharSequence dialog title to provide to the user when used with a
1647     * {@link #ACTION_CHOOSER}.
1648     */
1649    public static final String EXTRA_TITLE = "android.intent.extra.TITLE";
1650
1651    /**
1652     * A {@link android.view.KeyEvent} object containing the event that
1653     * triggered the creation of the Intent it is in.
1654     */
1655    public static final String EXTRA_KEY_EVENT = "android.intent.extra.KEY_EVENT";
1656
1657    /**
1658     * Used as an boolean extra field in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1659     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} intents to override the default action
1660     * of restarting the application.
1661     */
1662    public static final String EXTRA_DONT_KILL_APP = "android.intent.extra.DONT_KILL_APP";
1663
1664    /**
1665     * A String holding the phone number originally entered in
1666     * {@link android.content.Intent#ACTION_NEW_OUTGOING_CALL}, or the actual
1667     * number to call in a {@link android.content.Intent#ACTION_CALL}.
1668     */
1669    public static final String EXTRA_PHONE_NUMBER = "android.intent.extra.PHONE_NUMBER";
1670    /**
1671     * Used as an int extra field in {@link android.content.Intent#ACTION_UID_REMOVED}
1672     * intents to supply the uid the package had been assigned.  Also an optional
1673     * extra in {@link android.content.Intent#ACTION_PACKAGE_REMOVED} or
1674     * {@link android.content.Intent#ACTION_PACKAGE_CHANGED} for the same
1675     * purpose.
1676     */
1677    public static final String EXTRA_UID = "android.intent.extra.UID";
1678
1679    /**
1680     * Used as an int extra field in {@link android.app.AlarmManager} intents
1681     * to tell the application being invoked how many pending alarms are being
1682     * delievered with the intent.  For one-shot alarms this will always be 1.
1683     * For recurring alarms, this might be greater than 1 if the device was
1684     * asleep or powered off at the time an earlier alarm would have been
1685     * delivered.
1686     */
1687    public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
1688
1689    /**
1690     * Used as an int extra field in {@link android.content.Intent#ACTION_VOICE_COMMAND}
1691     * intents to request which audio route the voice command should prefer.
1692     * The value should be a route from {@link android.media.AudioManager}, for
1693     * example ROUTE_BLUETOOTH_SCO. Providing this value is optional.
1694     * {@hide pending API Council approval}
1695     */
1696    public static final String EXTRA_AUDIO_ROUTE = "android.intent.extra.AUDIO_ROUTE";
1697
1698    // ---------------------------------------------------------------------
1699    // ---------------------------------------------------------------------
1700    // Intent flags (see mFlags variable).
1701
1702    /**
1703     * If set, the recipient of this Intent will be granted permission to
1704     * perform read operations on the Uri in the Intent's data.
1705     */
1706    public static final int FLAG_GRANT_READ_URI_PERMISSION = 0x00000001;
1707    /**
1708     * If set, the recipient of this Intent will be granted permission to
1709     * perform write operations on the Uri in the Intent's data.
1710     */
1711    public static final int FLAG_GRANT_WRITE_URI_PERMISSION = 0x00000002;
1712    /**
1713     * Can be set by the caller to indicate that this Intent is coming from
1714     * a background operation, not from direct user interaction.
1715     */
1716    public static final int FLAG_FROM_BACKGROUND = 0x00000004;
1717    /**
1718     * A flag you can enable for debugging: when set, log messages will be
1719     * printed during the resolution of this intent to show you what has
1720     * been found to create the final resolved list.
1721     */
1722    public static final int FLAG_DEBUG_LOG_RESOLUTION = 0x00000008;
1723
1724    /**
1725     * If set, the new activity is not kept in the history stack.  As soon as
1726     * the user navigates away from it, the activity is finished.  This may also
1727     * be set with the {@link android.R.styleable#AndroidManifestActivity_noHistory
1728     * noHistory} attribute.
1729     */
1730    public static final int FLAG_ACTIVITY_NO_HISTORY = 0x40000000;
1731    /**
1732     * If set, the activity will not be launched if it is already running
1733     * at the top of the history stack.
1734     */
1735    public static final int FLAG_ACTIVITY_SINGLE_TOP = 0x20000000;
1736    /**
1737     * If set, this activity will become the start of a new task on this
1738     * history stack.  A task (from the activity that started it to the
1739     * next task activity) defines an atomic group of activities that the
1740     * user can move to.  Tasks can be moved to the foreground and background;
1741     * all of the activities inside of a particular task always remain in
1742     * the same order.  See the
1743     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1744     * documentation for more details on tasks.
1745     *
1746     * <p>This flag is generally used by activities that want
1747     * to present a "launcher" style behavior: they give the user a list of
1748     * separate things that can be done, which otherwise run completely
1749     * independently of the activity launching them.
1750     *
1751     * <p>When using this flag, if a task is already running for the activity
1752     * you are now starting, then a new activity will not be started; instead,
1753     * the current task will simply be brought to the front of the screen with
1754     * the state it was last in.  See {@link #FLAG_ACTIVITY_MULTIPLE_TASK} for a flag
1755     * to disable this behavior.
1756     *
1757     * <p>This flag can not be used when the caller is requesting a result from
1758     * the activity being launched.
1759     */
1760    public static final int FLAG_ACTIVITY_NEW_TASK = 0x10000000;
1761    /**
1762     * <strong>Do not use this flag unless you are implementing your own
1763     * top-level application launcher.</strong>  Used in conjunction with
1764     * {@link #FLAG_ACTIVITY_NEW_TASK} to disable the
1765     * behavior of bringing an existing task to the foreground.  When set,
1766     * a new task is <em>always</em> started to host the Activity for the
1767     * Intent, regardless of whether there is already an existing task running
1768     * the same thing.
1769     *
1770     * <p><strong>Because the default system does not include graphical task management,
1771     * you should not use this flag unless you provide some way for a user to
1772     * return back to the tasks you have launched.</strong>
1773     *
1774     * <p>This flag is ignored if
1775     * {@link #FLAG_ACTIVITY_NEW_TASK} is not set.
1776     *
1777     * <p>See the
1778     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1779     * documentation for more details on tasks.
1780     */
1781    public static final int FLAG_ACTIVITY_MULTIPLE_TASK = 0x08000000;
1782    /**
1783     * If set, and the activity being launched is already running in the
1784     * current task, then instead of launching a new instance of that activity,
1785     * all of the other activities on top of it will be closed and this Intent
1786     * will be delivered to the (now on top) old activity as a new Intent.
1787     *
1788     * <p>For example, consider a task consisting of the activities: A, B, C, D.
1789     * If D calls startActivity() with an Intent that resolves to the component
1790     * of activity B, then C and D will be finished and B receive the given
1791     * Intent, resulting in the stack now being: A, B.
1792     *
1793     * <p>The currently running instance of task B in the above example will
1794     * either receiving the new intent you are starting here in its
1795     * onNewIntent() method, or be itself finished and restarting with the
1796     * new intent.  If it has declared its launch mode to be "multiple" (the
1797     * default) it will be finished and re-created; for all other launch modes
1798     * it will receive the Intent in the current instance.
1799     *
1800     * <p>This launch mode can also be used to good effect in conjunction with
1801     * {@link #FLAG_ACTIVITY_NEW_TASK}: if used to start the root activity
1802     * of a task, it will bring any currently running instance of that task
1803     * to the foreground, and then clear it to its root state.  This is
1804     * especially useful, for example, when launching an activity from the
1805     * notification manager.
1806     *
1807     * <p>See the
1808     * <a href="{@docRoot}intro/appmodel.html">Application Model</a>
1809     * documentation for more details on tasks.
1810     */
1811    public static final int FLAG_ACTIVITY_CLEAR_TOP = 0x04000000;
1812    /**
1813     * If set and this intent is being used to launch a new activity from an
1814     * existing one, then the reply target of the existing activity will be
1815     * transfered to the new activity.  This way the new activity can call
1816     * {@link android.app.Activity#setResult} and have that result sent back to
1817     * the reply target of the original activity.
1818     */
1819    public static final int FLAG_ACTIVITY_FORWARD_RESULT = 0x02000000;
1820    /**
1821     * If set and this intent is being used to launch a new activity from an
1822     * existing one, the current activity will not be counted as the top
1823     * activity for deciding whether the new intent should be delivered to
1824     * the top instead of starting a new one.  The previous activity will
1825     * be used as the top, with the assumption being that the current activity
1826     * will finish itself immediately.
1827     */
1828    public static final int FLAG_ACTIVITY_PREVIOUS_IS_TOP = 0x01000000;
1829    /**
1830     * If set, the new activity is not kept in the list of recently launched
1831     * activities.
1832     */
1833    public static final int FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS = 0x00800000;
1834    /**
1835     * This flag is not normally set by application code, but set for you by
1836     * the system as described in the
1837     * {@link android.R.styleable#AndroidManifestActivity_launchMode
1838     * launchMode} documentation for the singleTask mode.
1839     */
1840    public static final int FLAG_ACTIVITY_BROUGHT_TO_FRONT = 0x00400000;
1841    /**
1842     * If set, and this activity is either being started in a new task or
1843     * bringing to the top an existing task, then it will be launched as
1844     * the front door of the task.  This will result in the application of
1845     * any affinities needed to have that task in the proper state (either
1846     * moving activities to or from it), or simply resetting that task to
1847     * its initial state if needed.
1848     */
1849    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED = 0x00200000;
1850    /**
1851     * This flag is not normally set by application code, but set for you by
1852     * the system if this activity is being launched from history
1853     * (longpress home key).
1854     */
1855    public static final int FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY = 0x00100000;
1856    /**
1857     * If set, this marks a point in the task's activity stack that should
1858     * be cleared when the task is reset.  That is, the next time the task
1859     * is broad to the foreground with
1860     * {@link #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED} (typically as a result of
1861     * the user re-launching it from home), this activity and all on top of
1862     * it will be finished so that the user does not return to them, but
1863     * instead returns to whatever activity preceeded it.
1864     *
1865     * <p>This is useful for cases where you have a logical break in your
1866     * application.  For example, an e-mail application may have a command
1867     * to view an attachment, which launches an image view activity to
1868     * display it.  This activity should be part of the e-mail application's
1869     * task, since it is a part of the task the user is involved in.  However,
1870     * if the user leaves that task, and later selects the e-mail app from
1871     * home, we may like them to return to the conversation they were
1872     * viewing, not the picture attachment, since that is confusing.  By
1873     * setting this flag when launching the image viewer, that viewer and
1874     * any activities it starts will be removed the next time the user returns
1875     * to mail.
1876     */
1877    public static final int FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET = 0x00080000;
1878    /**
1879     * If set, this flag will prevent the normal {@link android.app.Activity#onUserLeaving}
1880     * callback from occurring on the current frontmost activity before it is
1881     * paused as the newly-started activity is brought to the front.
1882     *
1883     * <p>Typically, an activity can rely on that callback to indicate that an
1884     * explicit user action has caused their activity to be moved out of the
1885     * foreground. The callback marks an appropriate point in the activity's
1886     * lifecycle for it to dismiss any notifications that it intends to display
1887     * "until the user has seen them," such as a blinking LED.
1888     *
1889     * <p>If an activity is ever started via any non-user-driven events such as
1890     * phone-call receipt or an alarm handler, this flag should be passed to {@link
1891     * Context#startActivity Context.startActivity}, ensuring that the pausing
1892     * activity does not think the user has acknowledged its notification.
1893     */
1894    public static final int FLAG_ACTIVITY_NO_USER_ACTION = 0x00040000;
1895
1896    /**
1897     * If set, when sending a broadcast only registered receivers will be
1898     * called -- no BroadcastReceiver components will be launched.
1899     */
1900    public static final int FLAG_RECEIVER_REGISTERED_ONLY = 0x40000000;
1901
1902    // ---------------------------------------------------------------------
1903
1904    private String mAction;
1905    private Uri mData;
1906    private String mType;
1907    private ComponentName mComponent;
1908    private int mFlags;
1909    private HashSet<String> mCategories;
1910    private Bundle mExtras;
1911
1912    // ---------------------------------------------------------------------
1913
1914    /**
1915     * Create an empty intent.
1916     */
1917    public Intent() {
1918    }
1919
1920    /**
1921     * Copy constructor.
1922     */
1923    public Intent(Intent o) {
1924        this.mAction = o.mAction;
1925        this.mData = o.mData;
1926        this.mType = o.mType;
1927        this.mComponent = o.mComponent;
1928        this.mFlags = o.mFlags;
1929        if (o.mCategories != null) {
1930            this.mCategories = new HashSet<String>(o.mCategories);
1931        }
1932        if (o.mExtras != null) {
1933            this.mExtras = new Bundle(o.mExtras);
1934        }
1935    }
1936
1937    @Override
1938    public Object clone() {
1939        return new Intent(this);
1940    }
1941
1942    private Intent(Intent o, boolean all) {
1943        this.mAction = o.mAction;
1944        this.mData = o.mData;
1945        this.mType = o.mType;
1946        this.mComponent = o.mComponent;
1947        if (o.mCategories != null) {
1948            this.mCategories = new HashSet<String>(o.mCategories);
1949        }
1950    }
1951
1952    /**
1953     * Make a clone of only the parts of the Intent that are relevant for
1954     * filter matching: the action, data, type, component, and categories.
1955     */
1956    public Intent cloneFilter() {
1957        return new Intent(this, false);
1958    }
1959
1960    /**
1961     * Create an intent with a given action.  All other fields (data, type,
1962     * class) are null.  Note that the action <em>must</em> be in a
1963     * namespace because Intents are used globally in the system -- for
1964     * example the system VIEW action is android.intent.action.VIEW; an
1965     * application's custom action would be something like
1966     * com.google.app.myapp.CUSTOM_ACTION.
1967     *
1968     * @param action The Intent action, such as ACTION_VIEW.
1969     */
1970    public Intent(String action) {
1971        mAction = action;
1972    }
1973
1974    /**
1975     * Create an intent with a given action and for a given data url.  Note
1976     * that the action <em>must</em> be in a namespace because Intents are
1977     * used globally in the system -- for example the system VIEW action is
1978     * android.intent.action.VIEW; an application's custom action would be
1979     * something like com.google.app.myapp.CUSTOM_ACTION.
1980     *
1981     * @param action The Intent action, such as ACTION_VIEW.
1982     * @param uri The Intent data URI.
1983     */
1984    public Intent(String action, Uri uri) {
1985        mAction = action;
1986        mData = uri;
1987    }
1988
1989    /**
1990     * Create an intent for a specific component.  All other fields (action, data,
1991     * type, class) are null, though they can be modified later with explicit
1992     * calls.  This provides a convenient way to create an intent that is
1993     * intended to execute a hard-coded class name, rather than relying on the
1994     * system to find an appropriate class for you; see {@link #setComponent}
1995     * for more information on the repercussions of this.
1996     *
1997     * @param packageContext A Context of the application package implementing
1998     * this class.
1999     * @param cls The component class that is to be used for the intent.
2000     *
2001     * @see #setClass
2002     * @see #setComponent
2003     * @see #Intent(String, android.net.Uri , Context, Class)
2004     */
2005    public Intent(Context packageContext, Class<?> cls) {
2006        mComponent = new ComponentName(packageContext, cls);
2007    }
2008
2009    /**
2010     * Create an intent for a specific component with a specified action and data.
2011     * This is equivalent using {@link #Intent(String, android.net.Uri)} to
2012     * construct the Intent and then calling {@link #setClass} to set its
2013     * class.
2014     *
2015     * @param action The Intent action, such as ACTION_VIEW.
2016     * @param uri The Intent data URI.
2017     * @param packageContext A Context of the application package implementing
2018     * this class.
2019     * @param cls The component class that is to be used for the intent.
2020     *
2021     * @see #Intent(String, android.net.Uri)
2022     * @see #Intent(Context, Class)
2023     * @see #setClass
2024     * @see #setComponent
2025     */
2026    public Intent(String action, Uri uri,
2027            Context packageContext, Class<?> cls) {
2028        mAction = action;
2029        mData = uri;
2030        mComponent = new ComponentName(packageContext, cls);
2031    }
2032
2033    /**
2034     * Create an intent from a URI.  This URI may encode the action,
2035     * category, and other intent fields, if it was returned by toURI().  If
2036     * the Intent was not generate by toURI(), its data will be the entire URI
2037     * and its action will be ACTION_VIEW.
2038     *
2039     * <p>The URI given here must not be relative -- that is, it must include
2040     * the scheme and full path.
2041     *
2042     * @param uri The URI to turn into an Intent.
2043     *
2044     * @return Intent The newly created Intent object.
2045     *
2046     * @see #toURI
2047     */
2048    public static Intent getIntent(String uri) throws URISyntaxException {
2049        int i = 0;
2050        try {
2051            // simple case
2052            i = uri.lastIndexOf("#");
2053            if (i == -1) return new Intent(ACTION_VIEW, Uri.parse(uri));
2054
2055            // old format Intent URI
2056            if (!uri.startsWith("#Intent;", i)) return getIntentOld(uri);
2057
2058            // new format
2059            Intent intent = new Intent(ACTION_VIEW);
2060
2061            // fetch data part, if present
2062            if (i > 0) {
2063                intent.mData = Uri.parse(uri.substring(0, i));
2064            }
2065            i += "#Intent;".length();
2066
2067            // loop over contents of Intent, all name=value;
2068            while (!uri.startsWith("end", i)) {
2069                int eq = uri.indexOf('=', i);
2070                int semi = uri.indexOf(';', eq);
2071                String value = uri.substring(eq + 1, semi);
2072
2073                // action
2074                if (uri.startsWith("action=", i)) {
2075                    intent.mAction = value;
2076                }
2077
2078                // categories
2079                else if (uri.startsWith("category=", i)) {
2080                    intent.addCategory(value);
2081                }
2082
2083                // type
2084                else if (uri.startsWith("type=", i)) {
2085                    intent.mType = value;
2086                }
2087
2088                // launch  flags
2089                else if (uri.startsWith("launchFlags=", i)) {
2090                    intent.mFlags = Integer.decode(value).intValue();
2091                }
2092
2093                // component
2094                else if (uri.startsWith("component=", i)) {
2095                    intent.mComponent = ComponentName.unflattenFromString(value);
2096                }
2097
2098                // extra
2099                else {
2100                    String key = Uri.decode(uri.substring(i + 2, eq));
2101                    value = Uri.decode(value);
2102                    // create Bundle if it doesn't already exist
2103                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2104                    Bundle b = intent.mExtras;
2105                    // add EXTRA
2106                    if      (uri.startsWith("S.", i)) b.putString(key, value);
2107                    else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
2108                    else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
2109                    else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
2110                    else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
2111                    else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
2112                    else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
2113                    else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
2114                    else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
2115                    else throw new URISyntaxException(uri, "unknown EXTRA type", i);
2116                }
2117
2118                // move to the next item
2119                i = semi + 1;
2120            }
2121
2122            return intent;
2123
2124        } catch (IndexOutOfBoundsException e) {
2125            throw new URISyntaxException(uri, "illegal Intent URI format", i);
2126        }
2127    }
2128
2129    public static Intent getIntentOld(String uri) throws URISyntaxException {
2130        Intent intent;
2131
2132        int i = uri.lastIndexOf('#');
2133        if (i >= 0) {
2134            Uri data = null;
2135            String action = null;
2136            if (i > 0) {
2137                data = Uri.parse(uri.substring(0, i));
2138            }
2139
2140            i++;
2141
2142            if (uri.regionMatches(i, "action(", 0, 7)) {
2143                i += 7;
2144                int j = uri.indexOf(')', i);
2145                action = uri.substring(i, j);
2146                i = j + 1;
2147            }
2148
2149            intent = new Intent(action, data);
2150
2151            if (uri.regionMatches(i, "categories(", 0, 11)) {
2152                i += 11;
2153                int j = uri.indexOf(')', i);
2154                while (i < j) {
2155                    int sep = uri.indexOf('!', i);
2156                    if (sep < 0) sep = j;
2157                    if (i < sep) {
2158                        intent.addCategory(uri.substring(i, sep));
2159                    }
2160                    i = sep + 1;
2161                }
2162                i = j + 1;
2163            }
2164
2165            if (uri.regionMatches(i, "type(", 0, 5)) {
2166                i += 5;
2167                int j = uri.indexOf(')', i);
2168                intent.mType = uri.substring(i, j);
2169                i = j + 1;
2170            }
2171
2172            if (uri.regionMatches(i, "launchFlags(", 0, 12)) {
2173                i += 12;
2174                int j = uri.indexOf(')', i);
2175                intent.mFlags = Integer.decode(uri.substring(i, j)).intValue();
2176                i = j + 1;
2177            }
2178
2179            if (uri.regionMatches(i, "component(", 0, 10)) {
2180                i += 10;
2181                int j = uri.indexOf(')', i);
2182                int sep = uri.indexOf('!', i);
2183                if (sep >= 0 && sep < j) {
2184                    String pkg = uri.substring(i, sep);
2185                    String cls = uri.substring(sep + 1, j);
2186                    intent.mComponent = new ComponentName(pkg, cls);
2187                }
2188                i = j + 1;
2189            }
2190
2191            if (uri.regionMatches(i, "extras(", 0, 7)) {
2192                i += 7;
2193
2194                final int closeParen = uri.indexOf(')', i);
2195                if (closeParen == -1) throw new URISyntaxException(uri,
2196                        "EXTRA missing trailing ')'", i);
2197
2198                while (i < closeParen) {
2199                    // fetch the key value
2200                    int j = uri.indexOf('=', i);
2201                    if (j <= i + 1 || i >= closeParen) {
2202                        throw new URISyntaxException(uri, "EXTRA missing '='", i);
2203                    }
2204                    char type = uri.charAt(i);
2205                    i++;
2206                    String key = uri.substring(i, j);
2207                    i = j + 1;
2208
2209                    // get type-value
2210                    j = uri.indexOf('!', i);
2211                    if (j == -1 || j >= closeParen) j = closeParen;
2212                    if (i >= j) throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2213                    String value = uri.substring(i, j);
2214                    i = j;
2215
2216                    // create Bundle if it doesn't already exist
2217                    if (intent.mExtras == null) intent.mExtras = new Bundle();
2218
2219                    // add item to bundle
2220                    try {
2221                        switch (type) {
2222                            case 'S':
2223                                intent.mExtras.putString(key, Uri.decode(value));
2224                                break;
2225                            case 'B':
2226                                intent.mExtras.putBoolean(key, Boolean.parseBoolean(value));
2227                                break;
2228                            case 'b':
2229                                intent.mExtras.putByte(key, Byte.parseByte(value));
2230                                break;
2231                            case 'c':
2232                                intent.mExtras.putChar(key, Uri.decode(value).charAt(0));
2233                                break;
2234                            case 'd':
2235                                intent.mExtras.putDouble(key, Double.parseDouble(value));
2236                                break;
2237                            case 'f':
2238                                intent.mExtras.putFloat(key, Float.parseFloat(value));
2239                                break;
2240                            case 'i':
2241                                intent.mExtras.putInt(key, Integer.parseInt(value));
2242                                break;
2243                            case 'l':
2244                                intent.mExtras.putLong(key, Long.parseLong(value));
2245                                break;
2246                            case 's':
2247                                intent.mExtras.putShort(key, Short.parseShort(value));
2248                                break;
2249                            default:
2250                                throw new URISyntaxException(uri, "EXTRA has unknown type", i);
2251                        }
2252                    } catch (NumberFormatException e) {
2253                        throw new URISyntaxException(uri, "EXTRA value can't be parsed", i);
2254                    }
2255
2256                    char ch = uri.charAt(i);
2257                    if (ch == ')') break;
2258                    if (ch != '!') throw new URISyntaxException(uri, "EXTRA missing '!'", i);
2259                    i++;
2260                }
2261            }
2262
2263            if (intent.mAction == null) {
2264                // By default, if no action is specified, then use VIEW.
2265                intent.mAction = ACTION_VIEW;
2266            }
2267
2268        } else {
2269            intent = new Intent(ACTION_VIEW, Uri.parse(uri));
2270        }
2271
2272        return intent;
2273    }
2274
2275    /**
2276     * Retrieve the general action to be performed, such as
2277     * {@link #ACTION_VIEW}.  The action describes the general way the rest of
2278     * the information in the intent should be interpreted -- most importantly,
2279     * what to do with the data returned by {@link #getData}.
2280     *
2281     * @return The action of this intent or null if none is specified.
2282     *
2283     * @see #setAction
2284     */
2285    public String getAction() {
2286        return mAction;
2287    }
2288
2289    /**
2290     * Retrieve data this intent is operating on.  This URI specifies the name
2291     * of the data; often it uses the content: scheme, specifying data in a
2292     * content provider.  Other schemes may be handled by specific activities,
2293     * such as http: by the web browser.
2294     *
2295     * @return The URI of the data this intent is targeting or null.
2296     *
2297     * @see #getScheme
2298     * @see #setData
2299     */
2300    public Uri getData() {
2301        return mData;
2302    }
2303
2304    /**
2305     * The same as {@link #getData()}, but returns the URI as an encoded
2306     * String.
2307     */
2308    public String getDataString() {
2309        return mData != null ? mData.toString() : null;
2310    }
2311
2312    /**
2313     * Return the scheme portion of the intent's data.  If the data is null or
2314     * does not include a scheme, null is returned.  Otherwise, the scheme
2315     * prefix without the final ':' is returned, i.e. "http".
2316     *
2317     * <p>This is the same as calling getData().getScheme() (and checking for
2318     * null data).
2319     *
2320     * @return The scheme of this intent.
2321     *
2322     * @see #getData
2323     */
2324    public String getScheme() {
2325        return mData != null ? mData.getScheme() : null;
2326    }
2327
2328    /**
2329     * Retrieve any explicit MIME type included in the intent.  This is usually
2330     * null, as the type is determined by the intent data.
2331     *
2332     * @return If a type was manually set, it is returned; else null is
2333     *         returned.
2334     *
2335     * @see #resolveType(ContentResolver)
2336     * @see #setType
2337     */
2338    public String getType() {
2339        return mType;
2340    }
2341
2342    /**
2343     * Return the MIME data type of this intent.  If the type field is
2344     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2345     * the type of that data is returned.  If neither fields are set, a null is
2346     * returned.
2347     *
2348     * @return The MIME type of this intent.
2349     *
2350     * @see #getType
2351     * @see #resolveType(ContentResolver)
2352     */
2353    public String resolveType(Context context) {
2354        return resolveType(context.getContentResolver());
2355    }
2356
2357    /**
2358     * Return the MIME data type of this intent.  If the type field is
2359     * explicitly set, that is simply returned.  Otherwise, if the data is set,
2360     * the type of that data is returned.  If neither fields are set, a null is
2361     * returned.
2362     *
2363     * @param resolver A ContentResolver that can be used to determine the MIME
2364     *                 type of the intent's data.
2365     *
2366     * @return The MIME type of this intent.
2367     *
2368     * @see #getType
2369     * @see #resolveType(Context)
2370     */
2371    public String resolveType(ContentResolver resolver) {
2372        if (mType != null) {
2373            return mType;
2374        }
2375        if (mData != null) {
2376            if ("content".equals(mData.getScheme())) {
2377                return resolver.getType(mData);
2378            }
2379        }
2380        return null;
2381    }
2382
2383    /**
2384     * Return the MIME data type of this intent, only if it will be needed for
2385     * intent resolution.  This is not generally useful for application code;
2386     * it is used by the frameworks for communicating with back-end system
2387     * services.
2388     *
2389     * @param resolver A ContentResolver that can be used to determine the MIME
2390     *                 type of the intent's data.
2391     *
2392     * @return The MIME type of this intent, or null if it is unknown or not
2393     *         needed.
2394     */
2395    public String resolveTypeIfNeeded(ContentResolver resolver) {
2396        if (mComponent != null) {
2397            return mType;
2398        }
2399        return resolveType(resolver);
2400    }
2401
2402    /**
2403     * Check if an category exists in the intent.
2404     *
2405     * @param category The category to check.
2406     *
2407     * @return boolean True if the intent contains the category, else false.
2408     *
2409     * @see #getCategories
2410     * @see #addCategory
2411     */
2412    public boolean hasCategory(String category) {
2413        return mCategories != null && mCategories.contains(category);
2414    }
2415
2416    /**
2417     * Return the set of all categories in the intent.  If there are no categories,
2418     * returns NULL.
2419     *
2420     * @return Set The set of categories you can examine.  Do not modify!
2421     *
2422     * @see #hasCategory
2423     * @see #addCategory
2424     */
2425    public Set<String> getCategories() {
2426        return mCategories;
2427    }
2428
2429    /**
2430     * Sets the ClassLoader that will be used when unmarshalling
2431     * any Parcelable values from the extras of this Intent.
2432     *
2433     * @param loader a ClassLoader, or null to use the default loader
2434     * at the time of unmarshalling.
2435     */
2436    public void setExtrasClassLoader(ClassLoader loader) {
2437        if (mExtras != null) {
2438            mExtras.setClassLoader(loader);
2439        }
2440    }
2441
2442    /**
2443     * Returns true if an extra value is associated with the given name.
2444     * @param name the extra's name
2445     * @return true if the given extra is present.
2446     */
2447    public boolean hasExtra(String name) {
2448        return mExtras != null && mExtras.containsKey(name);
2449    }
2450
2451    /**
2452     * Returns true if the Intent's extras contain a parcelled file descriptor.
2453     * @return true if the Intent contains a parcelled file descriptor.
2454     */
2455    public boolean hasFileDescriptors() {
2456        return mExtras != null && mExtras.hasFileDescriptors();
2457    }
2458
2459    /**
2460     * Retrieve extended data from the intent.
2461     *
2462     * @param name The name of the desired item.
2463     *
2464     * @return the value of an item that previously added with putExtra()
2465     * or null if none was found.
2466     *
2467     * @deprecated
2468     * @hide
2469     */
2470    @Deprecated
2471    public Object getExtra(String name) {
2472        return getExtra(name, null);
2473    }
2474
2475    /**
2476     * Retrieve extended data from the intent.
2477     *
2478     * @param name The name of the desired item.
2479     * @param defaultValue the value to be returned if no value of the desired
2480     * type is stored with the given name.
2481     *
2482     * @return the value of an item that previously added with putExtra()
2483     * or the default value if none was found.
2484     *
2485     * @see #putExtra(String, boolean)
2486     */
2487    public boolean getBooleanExtra(String name, boolean defaultValue) {
2488        return mExtras == null ? defaultValue :
2489            mExtras.getBoolean(name, defaultValue);
2490    }
2491
2492    /**
2493     * Retrieve extended data from the intent.
2494     *
2495     * @param name The name of the desired item.
2496     * @param defaultValue the value to be returned if no value of the desired
2497     * type is stored with the given name.
2498     *
2499     * @return the value of an item that previously added with putExtra()
2500     * or the default value if none was found.
2501     *
2502     * @see #putExtra(String, byte)
2503     */
2504    public byte getByteExtra(String name, byte defaultValue) {
2505        return mExtras == null ? defaultValue :
2506            mExtras.getByte(name, defaultValue);
2507    }
2508
2509    /**
2510     * Retrieve extended data from the intent.
2511     *
2512     * @param name The name of the desired item.
2513     * @param defaultValue the value to be returned if no value of the desired
2514     * type is stored with the given name.
2515     *
2516     * @return the value of an item that previously added with putExtra()
2517     * or the default value if none was found.
2518     *
2519     * @see #putExtra(String, short)
2520     */
2521    public short getShortExtra(String name, short defaultValue) {
2522        return mExtras == null ? defaultValue :
2523            mExtras.getShort(name, defaultValue);
2524    }
2525
2526    /**
2527     * Retrieve extended data from the intent.
2528     *
2529     * @param name The name of the desired item.
2530     * @param defaultValue the value to be returned if no value of the desired
2531     * type is stored with the given name.
2532     *
2533     * @return the value of an item that previously added with putExtra()
2534     * or the default value if none was found.
2535     *
2536     * @see #putExtra(String, char)
2537     */
2538    public char getCharExtra(String name, char defaultValue) {
2539        return mExtras == null ? defaultValue :
2540            mExtras.getChar(name, defaultValue);
2541    }
2542
2543    /**
2544     * Retrieve extended data from the intent.
2545     *
2546     * @param name The name of the desired item.
2547     * @param defaultValue the value to be returned if no value of the desired
2548     * type is stored with the given name.
2549     *
2550     * @return the value of an item that previously added with putExtra()
2551     * or the default value if none was found.
2552     *
2553     * @see #putExtra(String, int)
2554     */
2555    public int getIntExtra(String name, int defaultValue) {
2556        return mExtras == null ? defaultValue :
2557            mExtras.getInt(name, defaultValue);
2558    }
2559
2560    /**
2561     * Retrieve extended data from the intent.
2562     *
2563     * @param name The name of the desired item.
2564     * @param defaultValue the value to be returned if no value of the desired
2565     * type is stored with the given name.
2566     *
2567     * @return the value of an item that previously added with putExtra()
2568     * or the default value if none was found.
2569     *
2570     * @see #putExtra(String, long)
2571     */
2572    public long getLongExtra(String name, long defaultValue) {
2573        return mExtras == null ? defaultValue :
2574            mExtras.getLong(name, defaultValue);
2575    }
2576
2577    /**
2578     * Retrieve extended data from the intent.
2579     *
2580     * @param name The name of the desired item.
2581     * @param defaultValue the value to be returned if no value of the desired
2582     * type is stored with the given name.
2583     *
2584     * @return the value of an item that previously added with putExtra(),
2585     * or the default value if no such item is present
2586     *
2587     * @see #putExtra(String, float)
2588     */
2589    public float getFloatExtra(String name, float defaultValue) {
2590        return mExtras == null ? defaultValue :
2591            mExtras.getFloat(name, defaultValue);
2592    }
2593
2594    /**
2595     * Retrieve extended data from the intent.
2596     *
2597     * @param name The name of the desired item.
2598     * @param defaultValue the value to be returned if no value of the desired
2599     * type is stored with the given name.
2600     *
2601     * @return the value of an item that previously added with putExtra()
2602     * or the default value if none was found.
2603     *
2604     * @see #putExtra(String, double)
2605     */
2606    public double getDoubleExtra(String name, double defaultValue) {
2607        return mExtras == null ? defaultValue :
2608            mExtras.getDouble(name, defaultValue);
2609    }
2610
2611    /**
2612     * Retrieve extended data from the intent.
2613     *
2614     * @param name The name of the desired item.
2615     *
2616     * @return the value of an item that previously added with putExtra()
2617     * or null if no String value was found.
2618     *
2619     * @see #putExtra(String, String)
2620     */
2621    public String getStringExtra(String name) {
2622        return mExtras == null ? null : mExtras.getString(name);
2623    }
2624
2625    /**
2626     * Retrieve extended data from the intent.
2627     *
2628     * @param name The name of the desired item.
2629     *
2630     * @return the value of an item that previously added with putExtra()
2631     * or null if no CharSequence value was found.
2632     *
2633     * @see #putExtra(String, CharSequence)
2634     */
2635    public CharSequence getCharSequenceExtra(String name) {
2636        return mExtras == null ? null : mExtras.getCharSequence(name);
2637    }
2638
2639    /**
2640     * Retrieve extended data from the intent.
2641     *
2642     * @param name The name of the desired item.
2643     *
2644     * @return the value of an item that previously added with putExtra()
2645     * or null if no Parcelable value was found.
2646     *
2647     * @see #putExtra(String, Parcelable)
2648     */
2649    public <T extends Parcelable> T getParcelableExtra(String name) {
2650        return mExtras == null ? null : mExtras.<T>getParcelable(name);
2651    }
2652
2653    /**
2654     * Retrieve extended data from the intent.
2655     *
2656     * @param name The name of the desired item.
2657     *
2658     * @return the value of an item that previously added with putExtra()
2659     * or null if no Parcelable[] value was found.
2660     *
2661     * @see #putExtra(String, Parcelable[])
2662     */
2663    public Parcelable[] getParcelableArrayExtra(String name) {
2664        return mExtras == null ? null : mExtras.getParcelableArray(name);
2665    }
2666
2667    /**
2668     * Retrieve extended data from the intent.
2669     *
2670     * @param name The name of the desired item.
2671     *
2672     * @return the value of an item that previously added with putExtra()
2673     * or null if no ArrayList<Parcelable> value was found.
2674     *
2675     * @see #putParcelableArrayListExtra(String, ArrayList)
2676     */
2677    public <T extends Parcelable> ArrayList<T> getParcelableArrayListExtra(String name) {
2678        return mExtras == null ? null : mExtras.<T>getParcelableArrayList(name);
2679    }
2680
2681    /**
2682     * Retrieve extended data from the intent.
2683     *
2684     * @param name The name of the desired item.
2685     *
2686     * @return the value of an item that previously added with putExtra()
2687     * or null if no Serializable value was found.
2688     *
2689     * @see #putExtra(String, Serializable)
2690     */
2691    public Serializable getSerializableExtra(String name) {
2692        return mExtras == null ? null : mExtras.getSerializable(name);
2693    }
2694
2695    /**
2696     * Retrieve extended data from the intent.
2697     *
2698     * @param name The name of the desired item.
2699     *
2700     * @return the value of an item that previously added with putExtra()
2701     * or null if no ArrayList<Integer> value was found.
2702     *
2703     * @see #putIntegerArrayListExtra(String, ArrayList)
2704     */
2705    public ArrayList<Integer> getIntegerArrayListExtra(String name) {
2706        return mExtras == null ? null : mExtras.getIntegerArrayList(name);
2707    }
2708
2709    /**
2710     * Retrieve extended data from the intent.
2711     *
2712     * @param name The name of the desired item.
2713     *
2714     * @return the value of an item that previously added with putExtra()
2715     * or null if no ArrayList<String> value was found.
2716     *
2717     * @see #putStringArrayListExtra(String, ArrayList)
2718     */
2719    public ArrayList<String> getStringArrayListExtra(String name) {
2720        return mExtras == null ? null : mExtras.getStringArrayList(name);
2721    }
2722
2723    /**
2724     * Retrieve extended data from the intent.
2725     *
2726     * @param name The name of the desired item.
2727     *
2728     * @return the value of an item that previously added with putExtra()
2729     * or null if no boolean array value was found.
2730     *
2731     * @see #putExtra(String, boolean[])
2732     */
2733    public boolean[] getBooleanArrayExtra(String name) {
2734        return mExtras == null ? null : mExtras.getBooleanArray(name);
2735    }
2736
2737    /**
2738     * Retrieve extended data from the intent.
2739     *
2740     * @param name The name of the desired item.
2741     *
2742     * @return the value of an item that previously added with putExtra()
2743     * or null if no byte array value was found.
2744     *
2745     * @see #putExtra(String, byte[])
2746     */
2747    public byte[] getByteArrayExtra(String name) {
2748        return mExtras == null ? null : mExtras.getByteArray(name);
2749    }
2750
2751    /**
2752     * Retrieve extended data from the intent.
2753     *
2754     * @param name The name of the desired item.
2755     *
2756     * @return the value of an item that previously added with putExtra()
2757     * or null if no short array value was found.
2758     *
2759     * @see #putExtra(String, short[])
2760     */
2761    public short[] getShortArrayExtra(String name) {
2762        return mExtras == null ? null : mExtras.getShortArray(name);
2763    }
2764
2765    /**
2766     * Retrieve extended data from the intent.
2767     *
2768     * @param name The name of the desired item.
2769     *
2770     * @return the value of an item that previously added with putExtra()
2771     * or null if no char array value was found.
2772     *
2773     * @see #putExtra(String, char[])
2774     */
2775    public char[] getCharArrayExtra(String name) {
2776        return mExtras == null ? null : mExtras.getCharArray(name);
2777    }
2778
2779    /**
2780     * Retrieve extended data from the intent.
2781     *
2782     * @param name The name of the desired item.
2783     *
2784     * @return the value of an item that previously added with putExtra()
2785     * or null if no int array value was found.
2786     *
2787     * @see #putExtra(String, int[])
2788     */
2789    public int[] getIntArrayExtra(String name) {
2790        return mExtras == null ? null : mExtras.getIntArray(name);
2791    }
2792
2793    /**
2794     * Retrieve extended data from the intent.
2795     *
2796     * @param name The name of the desired item.
2797     *
2798     * @return the value of an item that previously added with putExtra()
2799     * or null if no long array value was found.
2800     *
2801     * @see #putExtra(String, long[])
2802     */
2803    public long[] getLongArrayExtra(String name) {
2804        return mExtras == null ? null : mExtras.getLongArray(name);
2805    }
2806
2807    /**
2808     * Retrieve extended data from the intent.
2809     *
2810     * @param name The name of the desired item.
2811     *
2812     * @return the value of an item that previously added with putExtra()
2813     * or null if no float array value was found.
2814     *
2815     * @see #putExtra(String, float[])
2816     */
2817    public float[] getFloatArrayExtra(String name) {
2818        return mExtras == null ? null : mExtras.getFloatArray(name);
2819    }
2820
2821    /**
2822     * Retrieve extended data from the intent.
2823     *
2824     * @param name The name of the desired item.
2825     *
2826     * @return the value of an item that previously added with putExtra()
2827     * or null if no double array value was found.
2828     *
2829     * @see #putExtra(String, double[])
2830     */
2831    public double[] getDoubleArrayExtra(String name) {
2832        return mExtras == null ? null : mExtras.getDoubleArray(name);
2833    }
2834
2835    /**
2836     * Retrieve extended data from the intent.
2837     *
2838     * @param name The name of the desired item.
2839     *
2840     * @return the value of an item that previously added with putExtra()
2841     * or null if no String array value was found.
2842     *
2843     * @see #putExtra(String, String[])
2844     */
2845    public String[] getStringArrayExtra(String name) {
2846        return mExtras == null ? null : mExtras.getStringArray(name);
2847    }
2848
2849    /**
2850     * Retrieve extended data from the intent.
2851     *
2852     * @param name The name of the desired item.
2853     *
2854     * @return the value of an item that previously added with putExtra()
2855     * or null if no Bundle value was found.
2856     *
2857     * @see #putExtra(String, Bundle)
2858     */
2859    public Bundle getBundleExtra(String name) {
2860        return mExtras == null ? null : mExtras.getBundle(name);
2861    }
2862
2863    /**
2864     * Retrieve extended data from the intent.
2865     *
2866     * @param name The name of the desired item.
2867     *
2868     * @return the value of an item that previously added with putExtra()
2869     * or null if no IBinder value was found.
2870     *
2871     * @see #putExtra(String, IBinder)
2872     *
2873     * @deprecated
2874     * @hide
2875     */
2876    @Deprecated
2877    public IBinder getIBinderExtra(String name) {
2878        return mExtras == null ? null : mExtras.getIBinder(name);
2879    }
2880
2881    /**
2882     * Retrieve extended data from the intent.
2883     *
2884     * @param name The name of the desired item.
2885     * @param defaultValue The default value to return in case no item is
2886     * associated with the key 'name'
2887     *
2888     * @return the value of an item that previously added with putExtra()
2889     * or defaultValue if none was found.
2890     *
2891     * @see #putExtra
2892     *
2893     * @deprecated
2894     * @hide
2895     */
2896    @Deprecated
2897    public Object getExtra(String name, Object defaultValue) {
2898        Object result = defaultValue;
2899        if (mExtras != null) {
2900            Object result2 = mExtras.get(name);
2901            if (result2 != null) {
2902                result = result2;
2903            }
2904        }
2905
2906        return result;
2907    }
2908
2909    /**
2910     * Retrieves a map of extended data from the intent.
2911     *
2912     * @return the map of all extras previously added with putExtra(),
2913     * or null if none have been added.
2914     */
2915    public Bundle getExtras() {
2916        return (mExtras != null)
2917                ? new Bundle(mExtras)
2918                : null;
2919    }
2920
2921    /**
2922     * Retrieve any special flags associated with this intent.  You will
2923     * normally just set them with {@link #setFlags} and let the system
2924     * take the appropriate action with them.
2925     *
2926     * @return int The currently set flags.
2927     *
2928     * @see #setFlags
2929     */
2930    public int getFlags() {
2931        return mFlags;
2932    }
2933
2934    /**
2935     * Retrieve the concrete component associated with the intent.  When receiving
2936     * an intent, this is the component that was found to best handle it (that is,
2937     * yourself) and will always be non-null; in all other cases it will be
2938     * null unless explicitly set.
2939     *
2940     * @return The name of the application component to handle the intent.
2941     *
2942     * @see #resolveActivity
2943     * @see #setComponent
2944     */
2945    public ComponentName getComponent() {
2946        return mComponent;
2947    }
2948
2949    /**
2950     * Return the Activity component that should be used to handle this intent.
2951     * The appropriate component is determined based on the information in the
2952     * intent, evaluated as follows:
2953     *
2954     * <p>If {@link #getComponent} returns an explicit class, that is returned
2955     * without any further consideration.
2956     *
2957     * <p>The activity must handle the {@link Intent#CATEGORY_DEFAULT} Intent
2958     * category to be considered.
2959     *
2960     * <p>If {@link #getAction} is non-NULL, the activity must handle this
2961     * action.
2962     *
2963     * <p>If {@link #resolveType} returns non-NULL, the activity must handle
2964     * this type.
2965     *
2966     * <p>If {@link #addCategory} has added any categories, the activity must
2967     * handle ALL of the categories specified.
2968     *
2969     * <p>If there are no activities that satisfy all of these conditions, a
2970     * null string is returned.
2971     *
2972     * <p>If multiple activities are found to satisfy the intent, the one with
2973     * the highest priority will be used.  If there are multiple activities
2974     * with the same priority, the system will either pick the best activity
2975     * based on user preference, or resolve to a system class that will allow
2976     * the user to pick an activity and forward from there.
2977     *
2978     * <p>This method is implemented simply by calling
2979     * {@link PackageManager#resolveActivity} with the "defaultOnly" parameter
2980     * true.</p>
2981     * <p> This API is called for you as part of starting an activity from an
2982     * intent.  You do not normally need to call it yourself.</p>
2983     *
2984     * @param pm The package manager with which to resolve the Intent.
2985     *
2986     * @return Name of the component implementing an activity that can
2987     *         display the intent.
2988     *
2989     * @see #setComponent
2990     * @see #getComponent
2991     * @see #resolveActivityInfo
2992     */
2993    public ComponentName resolveActivity(PackageManager pm) {
2994        if (mComponent != null) {
2995            return mComponent;
2996        }
2997
2998        ResolveInfo info = pm.resolveActivity(
2999            this, PackageManager.MATCH_DEFAULT_ONLY);
3000        if (info != null) {
3001            return new ComponentName(
3002                    info.activityInfo.applicationInfo.packageName,
3003                    info.activityInfo.name);
3004        }
3005
3006        return null;
3007    }
3008
3009    /**
3010     * Resolve the Intent into an {@link ActivityInfo}
3011     * describing the activity that should execute the intent.  Resolution
3012     * follows the same rules as described for {@link #resolveActivity}, but
3013     * you get back the completely information about the resolved activity
3014     * instead of just its class name.
3015     *
3016     * @param pm The package manager with which to resolve the Intent.
3017     * @param flags Addition information to retrieve as per
3018     * {@link PackageManager#getActivityInfo(ComponentName, int)
3019     * PackageManager.getActivityInfo()}.
3020     *
3021     * @return PackageManager.ActivityInfo
3022     *
3023     * @see #resolveActivity
3024     */
3025    public ActivityInfo resolveActivityInfo(PackageManager pm, int flags) {
3026        ActivityInfo ai = null;
3027        if (mComponent != null) {
3028            try {
3029                ai = pm.getActivityInfo(mComponent, flags);
3030            } catch (PackageManager.NameNotFoundException e) {
3031                // ignore
3032            }
3033        } else {
3034            ResolveInfo info = pm.resolveActivity(
3035                this, PackageManager.MATCH_DEFAULT_ONLY);
3036            if (info != null) {
3037                ai = info.activityInfo;
3038            }
3039        }
3040
3041        return ai;
3042    }
3043
3044    /**
3045     * Set the general action to be performed.
3046     *
3047     * @param action An action name, such as ACTION_VIEW.  Application-specific
3048     *               actions should be prefixed with the vendor's package name.
3049     *
3050     * @return Returns the same Intent object, for chaining multiple calls
3051     * into a single statement.
3052     *
3053     * @see #getAction
3054     */
3055    public Intent setAction(String action) {
3056        mAction = action;
3057        return this;
3058    }
3059
3060    /**
3061     * Set the data this intent is operating on.  This method automatically
3062     * clears any type that was previously set by {@link #setType}.
3063     *
3064     * @param data The URI of the data this intent is now targeting.
3065     *
3066     * @return Returns the same Intent object, for chaining multiple calls
3067     * into a single statement.
3068     *
3069     * @see #getData
3070     * @see #setType
3071     * @see #setDataAndType
3072     */
3073    public Intent setData(Uri data) {
3074        mData = data;
3075        mType = null;
3076        return this;
3077    }
3078
3079    /**
3080     * Set an explicit MIME data type.  This is used to create intents that
3081     * only specify a type and not data, for example to indicate the type of
3082     * data to return.  This method automatically clears any data that was
3083     * previously set by {@link #setData}.
3084     *
3085     * @param type The MIME type of the data being handled by this intent.
3086     *
3087     * @return Returns the same Intent object, for chaining multiple calls
3088     * into a single statement.
3089     *
3090     * @see #getType
3091     * @see #setData
3092     * @see #setDataAndType
3093     */
3094    public Intent setType(String type) {
3095        mData = null;
3096        mType = type;
3097        return this;
3098    }
3099
3100    /**
3101     * (Usually optional) Set the data for the intent along with an explicit
3102     * MIME data type.  This method should very rarely be used -- it allows you
3103     * to override the MIME type that would ordinarily be inferred from the
3104     * data with your own type given here.
3105     *
3106     * @param data The URI of the data this intent is now targeting.
3107     * @param type The MIME type of the data being handled by this intent.
3108     *
3109     * @return Returns the same Intent object, for chaining multiple calls
3110     * into a single statement.
3111     *
3112     * @see #setData
3113     * @see #setType
3114     */
3115    public Intent setDataAndType(Uri data, String type) {
3116        mData = data;
3117        mType = type;
3118        return this;
3119    }
3120
3121    /**
3122     * Add a new category to the intent.  Categories provide additional detail
3123     * about the action the intent is perform.  When resolving an intent, only
3124     * activities that provide <em>all</em> of the requested categories will be
3125     * used.
3126     *
3127     * @param category The desired category.  This can be either one of the
3128     *               predefined Intent categories, or a custom category in your own
3129     *               namespace.
3130     *
3131     * @return Returns the same Intent object, for chaining multiple calls
3132     * into a single statement.
3133     *
3134     * @see #hasCategory
3135     * @see #removeCategory
3136     */
3137    public Intent addCategory(String category) {
3138        if (mCategories == null) {
3139            mCategories = new HashSet<String>();
3140        }
3141        mCategories.add(category);
3142        return this;
3143    }
3144
3145    /**
3146     * Remove an category from an intent.
3147     *
3148     * @param category The category to remove.
3149     *
3150     * @see #addCategory
3151     */
3152    public void removeCategory(String category) {
3153        if (mCategories != null) {
3154            mCategories.remove(category);
3155            if (mCategories.size() == 0) {
3156                mCategories = null;
3157            }
3158        }
3159    }
3160
3161    /**
3162     * Add extended data to the intent.  The name must include a package
3163     * prefix, for example the app com.android.contacts would use names
3164     * like "com.android.contacts.ShowAll".
3165     *
3166     * @param name The name of the extra data, with package prefix.
3167     * @param value The boolean data value.
3168     *
3169     * @return Returns the same Intent object, for chaining multiple calls
3170     * into a single statement.
3171     *
3172     * @see #putExtras
3173     * @see #removeExtra
3174     * @see #getBooleanExtra(String, boolean)
3175     */
3176    public Intent putExtra(String name, boolean value) {
3177        if (mExtras == null) {
3178            mExtras = new Bundle();
3179        }
3180        mExtras.putBoolean(name, value);
3181        return this;
3182    }
3183
3184    /**
3185     * Add extended data to the intent.  The name must include a package
3186     * prefix, for example the app com.android.contacts would use names
3187     * like "com.android.contacts.ShowAll".
3188     *
3189     * @param name The name of the extra data, with package prefix.
3190     * @param value The byte data value.
3191     *
3192     * @return Returns the same Intent object, for chaining multiple calls
3193     * into a single statement.
3194     *
3195     * @see #putExtras
3196     * @see #removeExtra
3197     * @see #getByteExtra(String, byte)
3198     */
3199    public Intent putExtra(String name, byte value) {
3200        if (mExtras == null) {
3201            mExtras = new Bundle();
3202        }
3203        mExtras.putByte(name, value);
3204        return this;
3205    }
3206
3207    /**
3208     * Add extended data to the intent.  The name must include a package
3209     * prefix, for example the app com.android.contacts would use names
3210     * like "com.android.contacts.ShowAll".
3211     *
3212     * @param name The name of the extra data, with package prefix.
3213     * @param value The char data value.
3214     *
3215     * @return Returns the same Intent object, for chaining multiple calls
3216     * into a single statement.
3217     *
3218     * @see #putExtras
3219     * @see #removeExtra
3220     * @see #getCharExtra(String, char)
3221     */
3222    public Intent putExtra(String name, char value) {
3223        if (mExtras == null) {
3224            mExtras = new Bundle();
3225        }
3226        mExtras.putChar(name, value);
3227        return this;
3228    }
3229
3230    /**
3231     * Add extended data to the intent.  The name must include a package
3232     * prefix, for example the app com.android.contacts would use names
3233     * like "com.android.contacts.ShowAll".
3234     *
3235     * @param name The name of the extra data, with package prefix.
3236     * @param value The short data value.
3237     *
3238     * @return Returns the same Intent object, for chaining multiple calls
3239     * into a single statement.
3240     *
3241     * @see #putExtras
3242     * @see #removeExtra
3243     * @see #getShortExtra(String, short)
3244     */
3245    public Intent putExtra(String name, short value) {
3246        if (mExtras == null) {
3247            mExtras = new Bundle();
3248        }
3249        mExtras.putShort(name, value);
3250        return this;
3251    }
3252
3253    /**
3254     * Add extended data to the intent.  The name must include a package
3255     * prefix, for example the app com.android.contacts would use names
3256     * like "com.android.contacts.ShowAll".
3257     *
3258     * @param name The name of the extra data, with package prefix.
3259     * @param value The integer data value.
3260     *
3261     * @return Returns the same Intent object, for chaining multiple calls
3262     * into a single statement.
3263     *
3264     * @see #putExtras
3265     * @see #removeExtra
3266     * @see #getIntExtra(String, int)
3267     */
3268    public Intent putExtra(String name, int value) {
3269        if (mExtras == null) {
3270            mExtras = new Bundle();
3271        }
3272        mExtras.putInt(name, value);
3273        return this;
3274    }
3275
3276    /**
3277     * Add extended data to the intent.  The name must include a package
3278     * prefix, for example the app com.android.contacts would use names
3279     * like "com.android.contacts.ShowAll".
3280     *
3281     * @param name The name of the extra data, with package prefix.
3282     * @param value The long data value.
3283     *
3284     * @return Returns the same Intent object, for chaining multiple calls
3285     * into a single statement.
3286     *
3287     * @see #putExtras
3288     * @see #removeExtra
3289     * @see #getLongExtra(String, long)
3290     */
3291    public Intent putExtra(String name, long value) {
3292        if (mExtras == null) {
3293            mExtras = new Bundle();
3294        }
3295        mExtras.putLong(name, value);
3296        return this;
3297    }
3298
3299    /**
3300     * Add extended data to the intent.  The name must include a package
3301     * prefix, for example the app com.android.contacts would use names
3302     * like "com.android.contacts.ShowAll".
3303     *
3304     * @param name The name of the extra data, with package prefix.
3305     * @param value The float data value.
3306     *
3307     * @return Returns the same Intent object, for chaining multiple calls
3308     * into a single statement.
3309     *
3310     * @see #putExtras
3311     * @see #removeExtra
3312     * @see #getFloatExtra(String, float)
3313     */
3314    public Intent putExtra(String name, float value) {
3315        if (mExtras == null) {
3316            mExtras = new Bundle();
3317        }
3318        mExtras.putFloat(name, value);
3319        return this;
3320    }
3321
3322    /**
3323     * Add extended data to the intent.  The name must include a package
3324     * prefix, for example the app com.android.contacts would use names
3325     * like "com.android.contacts.ShowAll".
3326     *
3327     * @param name The name of the extra data, with package prefix.
3328     * @param value The double data value.
3329     *
3330     * @return Returns the same Intent object, for chaining multiple calls
3331     * into a single statement.
3332     *
3333     * @see #putExtras
3334     * @see #removeExtra
3335     * @see #getDoubleExtra(String, double)
3336     */
3337    public Intent putExtra(String name, double value) {
3338        if (mExtras == null) {
3339            mExtras = new Bundle();
3340        }
3341        mExtras.putDouble(name, value);
3342        return this;
3343    }
3344
3345    /**
3346     * Add extended data to the intent.  The name must include a package
3347     * prefix, for example the app com.android.contacts would use names
3348     * like "com.android.contacts.ShowAll".
3349     *
3350     * @param name The name of the extra data, with package prefix.
3351     * @param value The String data value.
3352     *
3353     * @return Returns the same Intent object, for chaining multiple calls
3354     * into a single statement.
3355     *
3356     * @see #putExtras
3357     * @see #removeExtra
3358     * @see #getStringExtra(String)
3359     */
3360    public Intent putExtra(String name, String value) {
3361        if (mExtras == null) {
3362            mExtras = new Bundle();
3363        }
3364        mExtras.putString(name, value);
3365        return this;
3366    }
3367
3368    /**
3369     * Add extended data to the intent.  The name must include a package
3370     * prefix, for example the app com.android.contacts would use names
3371     * like "com.android.contacts.ShowAll".
3372     *
3373     * @param name The name of the extra data, with package prefix.
3374     * @param value The CharSequence data value.
3375     *
3376     * @return Returns the same Intent object, for chaining multiple calls
3377     * into a single statement.
3378     *
3379     * @see #putExtras
3380     * @see #removeExtra
3381     * @see #getCharSequenceExtra(String)
3382     */
3383    public Intent putExtra(String name, CharSequence value) {
3384        if (mExtras == null) {
3385            mExtras = new Bundle();
3386        }
3387        mExtras.putCharSequence(name, value);
3388        return this;
3389    }
3390
3391    /**
3392     * Add extended data to the intent.  The name must include a package
3393     * prefix, for example the app com.android.contacts would use names
3394     * like "com.android.contacts.ShowAll".
3395     *
3396     * @param name The name of the extra data, with package prefix.
3397     * @param value The Parcelable data value.
3398     *
3399     * @return Returns the same Intent object, for chaining multiple calls
3400     * into a single statement.
3401     *
3402     * @see #putExtras
3403     * @see #removeExtra
3404     * @see #getParcelableExtra(String)
3405     */
3406    public Intent putExtra(String name, Parcelable value) {
3407        if (mExtras == null) {
3408            mExtras = new Bundle();
3409        }
3410        mExtras.putParcelable(name, value);
3411        return this;
3412    }
3413
3414    /**
3415     * Add extended data to the intent.  The name must include a package
3416     * prefix, for example the app com.android.contacts would use names
3417     * like "com.android.contacts.ShowAll".
3418     *
3419     * @param name The name of the extra data, with package prefix.
3420     * @param value The Parcelable[] data value.
3421     *
3422     * @return Returns the same Intent object, for chaining multiple calls
3423     * into a single statement.
3424     *
3425     * @see #putExtras
3426     * @see #removeExtra
3427     * @see #getParcelableArrayExtra(String)
3428     */
3429    public Intent putExtra(String name, Parcelable[] value) {
3430        if (mExtras == null) {
3431            mExtras = new Bundle();
3432        }
3433        mExtras.putParcelableArray(name, value);
3434        return this;
3435    }
3436
3437    /**
3438     * Add extended data to the intent.  The name must include a package
3439     * prefix, for example the app com.android.contacts would use names
3440     * like "com.android.contacts.ShowAll".
3441     *
3442     * @param name The name of the extra data, with package prefix.
3443     * @param value The ArrayList<Parcelable> data value.
3444     *
3445     * @return Returns the same Intent object, for chaining multiple calls
3446     * into a single statement.
3447     *
3448     * @see #putExtras
3449     * @see #removeExtra
3450     * @see #getParcelableArrayListExtra(String)
3451     */
3452    public Intent putParcelableArrayListExtra(String name, ArrayList<? extends Parcelable> value) {
3453        if (mExtras == null) {
3454            mExtras = new Bundle();
3455        }
3456        mExtras.putParcelableArrayList(name, value);
3457        return this;
3458    }
3459
3460    /**
3461     * Add extended data to the intent.  The name must include a package
3462     * prefix, for example the app com.android.contacts would use names
3463     * like "com.android.contacts.ShowAll".
3464     *
3465     * @param name The name of the extra data, with package prefix.
3466     * @param value The ArrayList<Integer> data value.
3467     *
3468     * @return Returns the same Intent object, for chaining multiple calls
3469     * into a single statement.
3470     *
3471     * @see #putExtras
3472     * @see #removeExtra
3473     * @see #getIntegerArrayListExtra(String)
3474     */
3475    public Intent putIntegerArrayListExtra(String name, ArrayList<Integer> value) {
3476        if (mExtras == null) {
3477            mExtras = new Bundle();
3478        }
3479        mExtras.putIntegerArrayList(name, value);
3480        return this;
3481    }
3482
3483    /**
3484     * Add extended data to the intent.  The name must include a package
3485     * prefix, for example the app com.android.contacts would use names
3486     * like "com.android.contacts.ShowAll".
3487     *
3488     * @param name The name of the extra data, with package prefix.
3489     * @param value The ArrayList<String> data value.
3490     *
3491     * @return Returns the same Intent object, for chaining multiple calls
3492     * into a single statement.
3493     *
3494     * @see #putExtras
3495     * @see #removeExtra
3496     * @see #getStringArrayListExtra(String)
3497     */
3498    public Intent putStringArrayListExtra(String name, ArrayList<String> value) {
3499        if (mExtras == null) {
3500            mExtras = new Bundle();
3501        }
3502        mExtras.putStringArrayList(name, value);
3503        return this;
3504    }
3505
3506    /**
3507     * Add extended data to the intent.  The name must include a package
3508     * prefix, for example the app com.android.contacts would use names
3509     * like "com.android.contacts.ShowAll".
3510     *
3511     * @param name The name of the extra data, with package prefix.
3512     * @param value The Serializable data value.
3513     *
3514     * @return Returns the same Intent object, for chaining multiple calls
3515     * into a single statement.
3516     *
3517     * @see #putExtras
3518     * @see #removeExtra
3519     * @see #getSerializableExtra(String)
3520     */
3521    public Intent putExtra(String name, Serializable value) {
3522        if (mExtras == null) {
3523            mExtras = new Bundle();
3524        }
3525        mExtras.putSerializable(name, value);
3526        return this;
3527    }
3528
3529    /**
3530     * Add extended data to the intent.  The name must include a package
3531     * prefix, for example the app com.android.contacts would use names
3532     * like "com.android.contacts.ShowAll".
3533     *
3534     * @param name The name of the extra data, with package prefix.
3535     * @param value The boolean array data value.
3536     *
3537     * @return Returns the same Intent object, for chaining multiple calls
3538     * into a single statement.
3539     *
3540     * @see #putExtras
3541     * @see #removeExtra
3542     * @see #getBooleanArrayExtra(String)
3543     */
3544    public Intent putExtra(String name, boolean[] value) {
3545        if (mExtras == null) {
3546            mExtras = new Bundle();
3547        }
3548        mExtras.putBooleanArray(name, value);
3549        return this;
3550    }
3551
3552    /**
3553     * Add extended data to the intent.  The name must include a package
3554     * prefix, for example the app com.android.contacts would use names
3555     * like "com.android.contacts.ShowAll".
3556     *
3557     * @param name The name of the extra data, with package prefix.
3558     * @param value The byte array data value.
3559     *
3560     * @return Returns the same Intent object, for chaining multiple calls
3561     * into a single statement.
3562     *
3563     * @see #putExtras
3564     * @see #removeExtra
3565     * @see #getByteArrayExtra(String)
3566     */
3567    public Intent putExtra(String name, byte[] value) {
3568        if (mExtras == null) {
3569            mExtras = new Bundle();
3570        }
3571        mExtras.putByteArray(name, value);
3572        return this;
3573    }
3574
3575    /**
3576     * Add extended data to the intent.  The name must include a package
3577     * prefix, for example the app com.android.contacts would use names
3578     * like "com.android.contacts.ShowAll".
3579     *
3580     * @param name The name of the extra data, with package prefix.
3581     * @param value The short array data value.
3582     *
3583     * @return Returns the same Intent object, for chaining multiple calls
3584     * into a single statement.
3585     *
3586     * @see #putExtras
3587     * @see #removeExtra
3588     * @see #getShortArrayExtra(String)
3589     */
3590    public Intent putExtra(String name, short[] value) {
3591        if (mExtras == null) {
3592            mExtras = new Bundle();
3593        }
3594        mExtras.putShortArray(name, value);
3595        return this;
3596    }
3597
3598    /**
3599     * Add extended data to the intent.  The name must include a package
3600     * prefix, for example the app com.android.contacts would use names
3601     * like "com.android.contacts.ShowAll".
3602     *
3603     * @param name The name of the extra data, with package prefix.
3604     * @param value The char array data value.
3605     *
3606     * @return Returns the same Intent object, for chaining multiple calls
3607     * into a single statement.
3608     *
3609     * @see #putExtras
3610     * @see #removeExtra
3611     * @see #getCharArrayExtra(String)
3612     */
3613    public Intent putExtra(String name, char[] value) {
3614        if (mExtras == null) {
3615            mExtras = new Bundle();
3616        }
3617        mExtras.putCharArray(name, value);
3618        return this;
3619    }
3620
3621    /**
3622     * Add extended data to the intent.  The name must include a package
3623     * prefix, for example the app com.android.contacts would use names
3624     * like "com.android.contacts.ShowAll".
3625     *
3626     * @param name The name of the extra data, with package prefix.
3627     * @param value The int array data value.
3628     *
3629     * @return Returns the same Intent object, for chaining multiple calls
3630     * into a single statement.
3631     *
3632     * @see #putExtras
3633     * @see #removeExtra
3634     * @see #getIntArrayExtra(String)
3635     */
3636    public Intent putExtra(String name, int[] value) {
3637        if (mExtras == null) {
3638            mExtras = new Bundle();
3639        }
3640        mExtras.putIntArray(name, value);
3641        return this;
3642    }
3643
3644    /**
3645     * Add extended data to the intent.  The name must include a package
3646     * prefix, for example the app com.android.contacts would use names
3647     * like "com.android.contacts.ShowAll".
3648     *
3649     * @param name The name of the extra data, with package prefix.
3650     * @param value The byte array data value.
3651     *
3652     * @return Returns the same Intent object, for chaining multiple calls
3653     * into a single statement.
3654     *
3655     * @see #putExtras
3656     * @see #removeExtra
3657     * @see #getLongArrayExtra(String)
3658     */
3659    public Intent putExtra(String name, long[] value) {
3660        if (mExtras == null) {
3661            mExtras = new Bundle();
3662        }
3663        mExtras.putLongArray(name, value);
3664        return this;
3665    }
3666
3667    /**
3668     * Add extended data to the intent.  The name must include a package
3669     * prefix, for example the app com.android.contacts would use names
3670     * like "com.android.contacts.ShowAll".
3671     *
3672     * @param name The name of the extra data, with package prefix.
3673     * @param value The float array data value.
3674     *
3675     * @return Returns the same Intent object, for chaining multiple calls
3676     * into a single statement.
3677     *
3678     * @see #putExtras
3679     * @see #removeExtra
3680     * @see #getFloatArrayExtra(String)
3681     */
3682    public Intent putExtra(String name, float[] value) {
3683        if (mExtras == null) {
3684            mExtras = new Bundle();
3685        }
3686        mExtras.putFloatArray(name, value);
3687        return this;
3688    }
3689
3690    /**
3691     * Add extended data to the intent.  The name must include a package
3692     * prefix, for example the app com.android.contacts would use names
3693     * like "com.android.contacts.ShowAll".
3694     *
3695     * @param name The name of the extra data, with package prefix.
3696     * @param value The double array data value.
3697     *
3698     * @return Returns the same Intent object, for chaining multiple calls
3699     * into a single statement.
3700     *
3701     * @see #putExtras
3702     * @see #removeExtra
3703     * @see #getDoubleArrayExtra(String)
3704     */
3705    public Intent putExtra(String name, double[] value) {
3706        if (mExtras == null) {
3707            mExtras = new Bundle();
3708        }
3709        mExtras.putDoubleArray(name, value);
3710        return this;
3711    }
3712
3713    /**
3714     * Add extended data to the intent.  The name must include a package
3715     * prefix, for example the app com.android.contacts would use names
3716     * like "com.android.contacts.ShowAll".
3717     *
3718     * @param name The name of the extra data, with package prefix.
3719     * @param value The String array data value.
3720     *
3721     * @return Returns the same Intent object, for chaining multiple calls
3722     * into a single statement.
3723     *
3724     * @see #putExtras
3725     * @see #removeExtra
3726     * @see #getStringArrayExtra(String)
3727     */
3728    public Intent putExtra(String name, String[] value) {
3729        if (mExtras == null) {
3730            mExtras = new Bundle();
3731        }
3732        mExtras.putStringArray(name, value);
3733        return this;
3734    }
3735
3736    /**
3737     * Add extended data to the intent.  The name must include a package
3738     * prefix, for example the app com.android.contacts would use names
3739     * like "com.android.contacts.ShowAll".
3740     *
3741     * @param name The name of the extra data, with package prefix.
3742     * @param value The Bundle data value.
3743     *
3744     * @return Returns the same Intent object, for chaining multiple calls
3745     * into a single statement.
3746     *
3747     * @see #putExtras
3748     * @see #removeExtra
3749     * @see #getBundleExtra(String)
3750     */
3751    public Intent putExtra(String name, Bundle value) {
3752        if (mExtras == null) {
3753            mExtras = new Bundle();
3754        }
3755        mExtras.putBundle(name, value);
3756        return this;
3757    }
3758
3759    /**
3760     * Add extended data to the intent.  The name must include a package
3761     * prefix, for example the app com.android.contacts would use names
3762     * like "com.android.contacts.ShowAll".
3763     *
3764     * @param name The name of the extra data, with package prefix.
3765     * @param value The IBinder data value.
3766     *
3767     * @return Returns the same Intent object, for chaining multiple calls
3768     * into a single statement.
3769     *
3770     * @see #putExtras
3771     * @see #removeExtra
3772     * @see #getIBinderExtra(String)
3773     *
3774     * @deprecated
3775     * @hide
3776     */
3777    @Deprecated
3778    public Intent putExtra(String name, IBinder value) {
3779        if (mExtras == null) {
3780            mExtras = new Bundle();
3781        }
3782        mExtras.putIBinder(name, value);
3783        return this;
3784    }
3785
3786    /**
3787     * Copy all extras in 'src' in to this intent.
3788     *
3789     * @param src Contains the extras to copy.
3790     *
3791     * @see #putExtra
3792     */
3793    public Intent putExtras(Intent src) {
3794        if (src.mExtras != null) {
3795            if (mExtras == null) {
3796                mExtras = new Bundle(src.mExtras);
3797            } else {
3798                mExtras.putAll(src.mExtras);
3799            }
3800        }
3801        return this;
3802    }
3803
3804    /**
3805     * Add a set of extended data to the intent.  The keys must include a package
3806     * prefix, for example the app com.android.contacts would use names
3807     * like "com.android.contacts.ShowAll".
3808     *
3809     * @param extras The Bundle of extras to add to this intent.
3810     *
3811     * @see #putExtra
3812     * @see #removeExtra
3813     */
3814    public Intent putExtras(Bundle extras) {
3815        if (mExtras == null) {
3816            mExtras = new Bundle();
3817        }
3818        mExtras.putAll(extras);
3819        return this;
3820    }
3821
3822    /**
3823     * Completely replace the extras in the Intent with the extras in the
3824     * given Intent.
3825     *
3826     * @param src The exact extras contained in this Intent are copied
3827     * into the target intent, replacing any that were previously there.
3828     */
3829    public Intent replaceExtras(Intent src) {
3830        mExtras = src.mExtras != null ? new Bundle(src.mExtras) : null;
3831        return this;
3832    }
3833
3834    /**
3835     * Completely replace the extras in the Intent with the given Bundle of
3836     * extras.
3837     *
3838     * @param extras The new set of extras in the Intent, or null to erase
3839     * all extras.
3840     */
3841    public Intent replaceExtras(Bundle extras) {
3842        mExtras = extras != null ? new Bundle(extras) : null;
3843        return this;
3844    }
3845
3846    /**
3847     * Remove extended data from the intent.
3848     *
3849     * @see #putExtra
3850     */
3851    public void removeExtra(String name) {
3852        if (mExtras != null) {
3853            mExtras.remove(name);
3854            if (mExtras.size() == 0) {
3855                mExtras = null;
3856            }
3857        }
3858    }
3859
3860    /**
3861     * Set special flags controlling how this intent is handled.  Most values
3862     * here depend on the type of component being executed by the Intent,
3863     * specifically the FLAG_ACTIVITY_* flags are all for use with
3864     * {@link Context#startActivity Context.startActivity()} and the
3865     * FLAG_RECEIVER_* flags are all for use with
3866     * {@link Context#sendBroadcast(Intent) Context.sendBroadcast()}.
3867     *
3868     * <p>See the <a href="{@docRoot}intro/appmodel.html">Application Model</a>
3869     * documentation for important information on how some of these options impact
3870     * the behavior of your application.
3871     *
3872     * @param flags The desired flags.
3873     *
3874     * @return Returns the same Intent object, for chaining multiple calls
3875     * into a single statement.
3876     *
3877     * @see #getFlags
3878     * @see #addFlags
3879     *
3880     * @see #FLAG_GRANT_READ_URI_PERMISSION
3881     * @see #FLAG_GRANT_WRITE_URI_PERMISSION
3882     * @see #FLAG_DEBUG_LOG_RESOLUTION
3883     * @see #FLAG_FROM_BACKGROUND
3884     * @see #FLAG_ACTIVITY_BROUGHT_TO_FRONT
3885     * @see #FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET
3886     * @see #FLAG_ACTIVITY_CLEAR_TOP
3887     * @see #FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
3888     * @see #FLAG_ACTIVITY_FORWARD_RESULT
3889     * @see #FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
3890     * @see #FLAG_ACTIVITY_MULTIPLE_TASK
3891     * @see #FLAG_ACTIVITY_NEW_TASK
3892     * @see #FLAG_ACTIVITY_NO_HISTORY
3893     * @see #FLAG_ACTIVITY_NO_USER_ACTION
3894     * @see #FLAG_ACTIVITY_PREVIOUS_IS_TOP
3895     * @see #FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
3896     * @see #FLAG_ACTIVITY_SINGLE_TOP
3897     * @see #FLAG_RECEIVER_REGISTERED_ONLY
3898     */
3899    public Intent setFlags(int flags) {
3900        mFlags = flags;
3901        return this;
3902    }
3903
3904    /**
3905     * Add additional flags to the intent (or with existing flags
3906     * value).
3907     *
3908     * @param flags The new flags to set.
3909     *
3910     * @return Returns the same Intent object, for chaining multiple calls
3911     * into a single statement.
3912     *
3913     * @see #setFlags
3914     */
3915    public Intent addFlags(int flags) {
3916        mFlags |= flags;
3917        return this;
3918    }
3919
3920    /**
3921     * (Usually optional) Explicitly set the component to handle the intent.
3922     * If left with the default value of null, the system will determine the
3923     * appropriate class to use based on the other fields (action, data,
3924     * type, categories) in the Intent.  If this class is defined, the
3925     * specified class will always be used regardless of the other fields.  You
3926     * should only set this value when you know you absolutely want a specific
3927     * class to be used; otherwise it is better to let the system find the
3928     * appropriate class so that you will respect the installed applications
3929     * and user preferences.
3930     *
3931     * @param component The name of the application component to handle the
3932     * intent, or null to let the system find one for you.
3933     *
3934     * @return Returns the same Intent object, for chaining multiple calls
3935     * into a single statement.
3936     *
3937     * @see #setClass
3938     * @see #setClassName(Context, String)
3939     * @see #setClassName(String, String)
3940     * @see #getComponent
3941     * @see #resolveActivity
3942     */
3943    public Intent setComponent(ComponentName component) {
3944        mComponent = component;
3945        return this;
3946    }
3947
3948    /**
3949     * Convenience for calling {@link #setComponent} with an
3950     * explicit class name.
3951     *
3952     * @param packageContext A Context of the application package implementing
3953     * this class.
3954     * @param className The name of a class inside of the application package
3955     * that will be used as the component for this Intent.
3956     *
3957     * @return Returns the same Intent object, for chaining multiple calls
3958     * into a single statement.
3959     *
3960     * @see #setComponent
3961     * @see #setClass
3962     */
3963    public Intent setClassName(Context packageContext, String className) {
3964        mComponent = new ComponentName(packageContext, className);
3965        return this;
3966    }
3967
3968    /**
3969     * Convenience for calling {@link #setComponent} with an
3970     * explicit application package name and class name.
3971     *
3972     * @param packageName The name of the package implementing the desired
3973     * component.
3974     * @param className The name of a class inside of the application package
3975     * that will be used as the component for this Intent.
3976     *
3977     * @return Returns the same Intent object, for chaining multiple calls
3978     * into a single statement.
3979     *
3980     * @see #setComponent
3981     * @see #setClass
3982     */
3983    public Intent setClassName(String packageName, String className) {
3984        mComponent = new ComponentName(packageName, className);
3985        return this;
3986    }
3987
3988    /**
3989     * Convenience for calling {@link #setComponent(ComponentName)} with the
3990     * name returned by a {@link Class} object.
3991     *
3992     * @param packageContext A Context of the application package implementing
3993     * this class.
3994     * @param cls The class name to set, equivalent to
3995     *            <code>setClassName(context, cls.getName())</code>.
3996     *
3997     * @return Returns the same Intent object, for chaining multiple calls
3998     * into a single statement.
3999     *
4000     * @see #setComponent
4001     */
4002    public Intent setClass(Context packageContext, Class<?> cls) {
4003        mComponent = new ComponentName(packageContext, cls);
4004        return this;
4005    }
4006
4007    /**
4008     * Use with {@link #fillIn} to allow the current action value to be
4009     * overwritten, even if it is already set.
4010     */
4011    public static final int FILL_IN_ACTION = 1<<0;
4012
4013    /**
4014     * Use with {@link #fillIn} to allow the current data or type value
4015     * overwritten, even if it is already set.
4016     */
4017    public static final int FILL_IN_DATA = 1<<1;
4018
4019    /**
4020     * Use with {@link #fillIn} to allow the current categories to be
4021     * overwritten, even if they are already set.
4022     */
4023    public static final int FILL_IN_CATEGORIES = 1<<2;
4024
4025    /**
4026     * Use with {@link #fillIn} to allow the current component value to be
4027     * overwritten, even if it is already set.
4028     */
4029    public static final int FILL_IN_COMPONENT = 1<<3;
4030
4031    /**
4032     * Copy the contents of <var>other</var> in to this object, but only
4033     * where fields are not defined by this object.  For purposes of a field
4034     * being defined, the following pieces of data in the Intent are
4035     * considered to be separate fields:
4036     *
4037     * <ul>
4038     * <li> action, as set by {@link #setAction}.
4039     * <li> data URI and MIME type, as set by {@link #setData(Uri)},
4040     * {@link #setType(String)}, or {@link #setDataAndType(Uri, String)}.
4041     * <li> categories, as set by {@link #addCategory}.
4042     * <li> component, as set by {@link #setComponent(ComponentName)} or
4043     * related methods.
4044     * <li> each top-level name in the associated extras.
4045     * </ul>
4046     *
4047     * <p>In addition, you can use the {@link #FILL_IN_ACTION},
4048     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, and
4049     * {@link #FILL_IN_COMPONENT} to override the restriction where the
4050     * corresponding field will not be replaced if it is already set.
4051     *
4052     * <p>For example, consider Intent A with {data="foo", categories="bar"}
4053     * and Intent B with {action="gotit", data-type="some/thing",
4054     * categories="one","two"}.
4055     *
4056     * <p>Calling A.fillIn(B, Intent.FILL_IN_DATA) will result in A now
4057     * containing: {action="gotit", data-type="some/thing",
4058     * categories="bar"}.
4059     *
4060     * @param other Another Intent whose values are to be used to fill in
4061     * the current one.
4062     * @param flags Options to control which fields can be filled in.
4063     *
4064     * @return Returns a bit mask of {@link #FILL_IN_ACTION},
4065     * {@link #FILL_IN_DATA}, {@link #FILL_IN_CATEGORIES}, and
4066     * {@link #FILL_IN_COMPONENT} indicating which fields were changed.
4067     */
4068    public int fillIn(Intent other, int flags) {
4069        int changes = 0;
4070        if ((mAction == null && other.mAction == null)
4071                || (flags&FILL_IN_ACTION) != 0) {
4072            mAction = other.mAction;
4073            changes |= FILL_IN_ACTION;
4074        }
4075        if ((mData == null && mType == null &&
4076                (other.mData != null || other.mType != null))
4077                || (flags&FILL_IN_DATA) != 0) {
4078            mData = other.mData;
4079            mType = other.mType;
4080            changes |= FILL_IN_DATA;
4081        }
4082        if ((mCategories == null && other.mCategories == null)
4083                || (flags&FILL_IN_CATEGORIES) != 0) {
4084            if (other.mCategories != null) {
4085                mCategories = new HashSet<String>(other.mCategories);
4086            }
4087            changes |= FILL_IN_CATEGORIES;
4088        }
4089        if ((mComponent == null && other.mComponent == null)
4090                || (flags&FILL_IN_COMPONENT) != 0) {
4091            mComponent = other.mComponent;
4092            changes |= FILL_IN_COMPONENT;
4093        }
4094        mFlags |= other.mFlags;
4095        if (mExtras == null) {
4096            if (other.mExtras != null) {
4097                mExtras = new Bundle(other.mExtras);
4098            }
4099        } else if (other.mExtras != null) {
4100            try {
4101                Bundle newb = new Bundle(other.mExtras);
4102                newb.putAll(mExtras);
4103                mExtras = newb;
4104            } catch (RuntimeException e) {
4105                // Modifying the extras can cause us to unparcel the contents
4106                // of the bundle, and if we do this in the system process that
4107                // may fail.  We really should handle this (i.e., the Bundle
4108                // impl shouldn't be on top of a plain map), but for now just
4109                // ignore it and keep the original contents. :(
4110                Log.w("Intent", "Failure filling in extras", e);
4111            }
4112        }
4113        return changes;
4114    }
4115
4116    /**
4117     * Wrapper class holding an Intent and implementing comparisons on it for
4118     * the purpose of filtering.  The class implements its
4119     * {@link #equals equals()} and {@link #hashCode hashCode()} methods as
4120     * simple calls to {@link Intent#filterEquals(Intent)}  filterEquals()} and
4121     * {@link android.content.Intent#filterHashCode()}  filterHashCode()}
4122     * on the wrapped Intent.
4123     */
4124    public static final class FilterComparison {
4125        private final Intent mIntent;
4126        private final int mHashCode;
4127
4128        public FilterComparison(Intent intent) {
4129            mIntent = intent;
4130            mHashCode = intent.filterHashCode();
4131        }
4132
4133        /**
4134         * Return the Intent that this FilterComparison represents.
4135         * @return Returns the Intent held by the FilterComparison.  Do
4136         * not modify!
4137         */
4138        public Intent getIntent() {
4139            return mIntent;
4140        }
4141
4142        @Override
4143        public boolean equals(Object obj) {
4144            Intent other;
4145            try {
4146                other = ((FilterComparison)obj).mIntent;
4147            } catch (ClassCastException e) {
4148                return false;
4149            }
4150
4151            return mIntent.filterEquals(other);
4152        }
4153
4154        @Override
4155        public int hashCode() {
4156            return mHashCode;
4157        }
4158    }
4159
4160    /**
4161     * Determine if two intents are the same for the purposes of intent
4162     * resolution (filtering). That is, if their action, data, type,
4163     * class, and categories are the same.  This does <em>not</em> compare
4164     * any extra data included in the intents.
4165     *
4166     * @param other The other Intent to compare against.
4167     *
4168     * @return Returns true if action, data, type, class, and categories
4169     *         are the same.
4170     */
4171    public boolean filterEquals(Intent other) {
4172        if (other == null) {
4173            return false;
4174        }
4175        if (mAction != other.mAction) {
4176            if (mAction != null) {
4177                if (!mAction.equals(other.mAction)) {
4178                    return false;
4179                }
4180            } else {
4181                if (!other.mAction.equals(mAction)) {
4182                    return false;
4183                }
4184            }
4185        }
4186        if (mData != other.mData) {
4187            if (mData != null) {
4188                if (!mData.equals(other.mData)) {
4189                    return false;
4190                }
4191            } else {
4192                if (!other.mData.equals(mData)) {
4193                    return false;
4194                }
4195            }
4196        }
4197        if (mType != other.mType) {
4198            if (mType != null) {
4199                if (!mType.equals(other.mType)) {
4200                    return false;
4201                }
4202            } else {
4203                if (!other.mType.equals(mType)) {
4204                    return false;
4205                }
4206            }
4207        }
4208        if (mComponent != other.mComponent) {
4209            if (mComponent != null) {
4210                if (!mComponent.equals(other.mComponent)) {
4211                    return false;
4212                }
4213            } else {
4214                if (!other.mComponent.equals(mComponent)) {
4215                    return false;
4216                }
4217            }
4218        }
4219        if (mCategories != other.mCategories) {
4220            if (mCategories != null) {
4221                if (!mCategories.equals(other.mCategories)) {
4222                    return false;
4223                }
4224            } else {
4225                if (!other.mCategories.equals(mCategories)) {
4226                    return false;
4227                }
4228            }
4229        }
4230
4231        return true;
4232    }
4233
4234    /**
4235     * Generate hash code that matches semantics of filterEquals().
4236     *
4237     * @return Returns the hash value of the action, data, type, class, and
4238     *         categories.
4239     *
4240     * @see #filterEquals
4241     */
4242    public int filterHashCode() {
4243        int code = 0;
4244        if (mAction != null) {
4245            code += mAction.hashCode();
4246        }
4247        if (mData != null) {
4248            code += mData.hashCode();
4249        }
4250        if (mType != null) {
4251            code += mType.hashCode();
4252        }
4253        if (mComponent != null) {
4254            code += mComponent.hashCode();
4255        }
4256        if (mCategories != null) {
4257            code += mCategories.hashCode();
4258        }
4259        return code;
4260    }
4261
4262    @Override
4263    public String toString() {
4264        StringBuilder   b = new StringBuilder();
4265
4266        b.append("Intent {");
4267        if (mAction != null) b.append(" action=").append(mAction);
4268        if (mCategories != null) {
4269            b.append(" categories={");
4270            Iterator<String> i = mCategories.iterator();
4271            boolean didone = false;
4272            while (i.hasNext()) {
4273                if (didone) b.append(",");
4274                didone = true;
4275                b.append(i.next());
4276            }
4277            b.append("}");
4278        }
4279        if (mData != null) b.append(" data=").append(mData);
4280        if (mType != null) b.append(" type=").append(mType);
4281        if (mFlags != 0) b.append(" flags=0x").append(Integer.toHexString(mFlags));
4282        if (mComponent != null) b.append(" comp=").append(mComponent.toShortString());
4283        if (mExtras != null) b.append(" (has extras)");
4284        b.append(" }");
4285
4286        return b.toString();
4287    }
4288
4289    public String toURI() {
4290        StringBuilder uri = new StringBuilder(mData != null ? mData.toString() : "");
4291
4292        uri.append("#Intent;");
4293
4294        if (mAction != null) {
4295            uri.append("action=").append(mAction).append(';');
4296        }
4297        if (mCategories != null) {
4298            for (String category : mCategories) {
4299                uri.append("category=").append(category).append(';');
4300            }
4301        }
4302        if (mType != null) {
4303            uri.append("type=").append(mType).append(';');
4304        }
4305        if (mFlags != 0) {
4306            uri.append("launchFlags=0x").append(Integer.toHexString(mFlags)).append(';');
4307        }
4308        if (mComponent != null) {
4309            uri.append("component=").append(mComponent.flattenToShortString()).append(';');
4310        }
4311        if (mExtras != null) {
4312            for (String key : mExtras.keySet()) {
4313                final Object value = mExtras.get(key);
4314                char entryType =
4315                        value instanceof String    ? 'S' :
4316                        value instanceof Boolean   ? 'B' :
4317                        value instanceof Byte      ? 'b' :
4318                        value instanceof Character ? 'c' :
4319                        value instanceof Double    ? 'd' :
4320                        value instanceof Float     ? 'f' :
4321                        value instanceof Integer   ? 'i' :
4322                        value instanceof Long      ? 'l' :
4323                        value instanceof Short     ? 's' :
4324                        '\0';
4325
4326                if (entryType != '\0') {
4327                    uri.append(entryType);
4328                    uri.append('.');
4329                    uri.append(Uri.encode(key));
4330                    uri.append('=');
4331                    uri.append(Uri.encode(value.toString()));
4332                    uri.append(';');
4333                }
4334            }
4335        }
4336
4337        uri.append("end");
4338
4339        return uri.toString();
4340    }
4341
4342    public int describeContents() {
4343        return (mExtras != null) ? mExtras.describeContents() : 0;
4344    }
4345
4346    public void writeToParcel(Parcel out, int flags) {
4347        out.writeString(mAction);
4348        Uri.writeToParcel(out, mData);
4349        out.writeString(mType);
4350        out.writeInt(mFlags);
4351        ComponentName.writeToParcel(mComponent, out);
4352
4353        if (mCategories != null) {
4354            out.writeInt(mCategories.size());
4355            for (String category : mCategories) {
4356                out.writeString(category);
4357            }
4358        } else {
4359            out.writeInt(0);
4360        }
4361
4362        out.writeBundle(mExtras);
4363    }
4364
4365    public static final Parcelable.Creator<Intent> CREATOR
4366            = new Parcelable.Creator<Intent>() {
4367        public Intent createFromParcel(Parcel in) {
4368            return new Intent(in);
4369        }
4370        public Intent[] newArray(int size) {
4371            return new Intent[size];
4372        }
4373    };
4374
4375    private Intent(Parcel in) {
4376        readFromParcel(in);
4377    }
4378
4379    public void readFromParcel(Parcel in) {
4380        mAction = in.readString();
4381        mData = Uri.CREATOR.createFromParcel(in);
4382        mType = in.readString();
4383        mFlags = in.readInt();
4384        mComponent = ComponentName.readFromParcel(in);
4385
4386        int N = in.readInt();
4387        if (N > 0) {
4388            mCategories = new HashSet<String>();
4389            int i;
4390            for (i=0; i<N; i++) {
4391                mCategories.add(in.readString());
4392            }
4393        } else {
4394            mCategories = null;
4395        }
4396
4397        mExtras = in.readBundle();
4398    }
4399
4400    /**
4401     * Parses the "intent" element (and its children) from XML and instantiates
4402     * an Intent object.  The given XML parser should be located at the tag
4403     * where parsing should start (often named "intent"), from which the
4404     * basic action, data, type, and package and class name will be
4405     * retrieved.  The function will then parse in to any child elements,
4406     * looking for <category android:name="xxx"> tags to add categories and
4407     * <extra android:name="xxx" android:value="yyy"> to attach extra data
4408     * to the intent.
4409     *
4410     * @param resources The Resources to use when inflating resources.
4411     * @param parser The XML parser pointing at an "intent" tag.
4412     * @param attrs The AttributeSet interface for retrieving extended
4413     * attribute data at the current <var>parser</var> location.
4414     * @return An Intent object matching the XML data.
4415     * @throws XmlPullParserException If there was an XML parsing error.
4416     * @throws IOException If there was an I/O error.
4417     */
4418    public static Intent parseIntent(Resources resources, XmlPullParser parser, AttributeSet attrs)
4419            throws XmlPullParserException, IOException {
4420        Intent intent = new Intent();
4421
4422        TypedArray sa = resources.obtainAttributes(attrs,
4423                com.android.internal.R.styleable.Intent);
4424
4425        intent.setAction(sa.getString(com.android.internal.R.styleable.Intent_action));
4426
4427        String data = sa.getString(com.android.internal.R.styleable.Intent_data);
4428        String mimeType = sa.getString(com.android.internal.R.styleable.Intent_mimeType);
4429        intent.setDataAndType(data != null ? Uri.parse(data) : null, mimeType);
4430
4431        String packageName = sa.getString(com.android.internal.R.styleable.Intent_targetPackage);
4432        String className = sa.getString(com.android.internal.R.styleable.Intent_targetClass);
4433        if (packageName != null && className != null) {
4434            intent.setComponent(new ComponentName(packageName, className));
4435        }
4436
4437        sa.recycle();
4438
4439        int outerDepth = parser.getDepth();
4440        int type;
4441        while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
4442               && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
4443            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
4444                continue;
4445            }
4446
4447            String nodeName = parser.getName();
4448            if (nodeName.equals("category")) {
4449                sa = resources.obtainAttributes(attrs,
4450                        com.android.internal.R.styleable.IntentCategory);
4451                String cat = sa.getString(com.android.internal.R.styleable.IntentCategory_name);
4452                sa.recycle();
4453
4454                if (cat != null) {
4455                    intent.addCategory(cat);
4456                }
4457                XmlUtils.skipCurrentTag(parser);
4458
4459            } else if (nodeName.equals("extra")) {
4460                if (intent.mExtras == null) {
4461                    intent.mExtras = new Bundle();
4462                }
4463                resources.parseBundleExtra("extra", attrs, intent.mExtras);
4464                XmlUtils.skipCurrentTag(parser);
4465
4466            } else {
4467                XmlUtils.skipCurrentTag(parser);
4468            }
4469        }
4470
4471        return intent;
4472    }
4473}
4474