PackageManager.java revision 8dbbe3b52f815c49be986814743a521f802b4785
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.pm;
18
19
20import android.app.PendingIntent;
21import android.content.ComponentName;
22import android.content.Context;
23import android.content.Intent;
24import android.content.IntentFilter;
25import android.content.IntentSender;
26import android.content.res.Resources;
27import android.content.res.XmlResourceParser;
28import android.graphics.drawable.Drawable;
29import android.net.Uri;
30import android.util.AndroidException;
31import android.util.DisplayMetrics;
32
33import java.io.File;
34import java.util.List;
35
36/**
37 * Class for retrieving various kinds of information related to the application
38 * packages that are currently installed on the device.
39 *
40 * You can find this class through {@link Context#getPackageManager}.
41 */
42public abstract class PackageManager {
43
44    /**
45     * This exception is thrown when a given package, application, or component
46     * name can not be found.
47     */
48    public static class NameNotFoundException extends AndroidException {
49        public NameNotFoundException() {
50        }
51
52        public NameNotFoundException(String name) {
53            super(name);
54        }
55    }
56
57    /**
58     * {@link PackageInfo} flag: return information about
59     * activities in the package in {@link PackageInfo#activities}.
60     */
61    public static final int GET_ACTIVITIES              = 0x00000001;
62
63    /**
64     * {@link PackageInfo} flag: return information about
65     * intent receivers in the package in
66     * {@link PackageInfo#receivers}.
67     */
68    public static final int GET_RECEIVERS               = 0x00000002;
69
70    /**
71     * {@link PackageInfo} flag: return information about
72     * services in the package in {@link PackageInfo#services}.
73     */
74    public static final int GET_SERVICES                = 0x00000004;
75
76    /**
77     * {@link PackageInfo} flag: return information about
78     * content providers in the package in
79     * {@link PackageInfo#providers}.
80     */
81    public static final int GET_PROVIDERS               = 0x00000008;
82
83    /**
84     * {@link PackageInfo} flag: return information about
85     * instrumentation in the package in
86     * {@link PackageInfo#instrumentation}.
87     */
88    public static final int GET_INSTRUMENTATION         = 0x00000010;
89
90    /**
91     * {@link PackageInfo} flag: return information about the
92     * intent filters supported by the activity.
93     */
94    public static final int GET_INTENT_FILTERS          = 0x00000020;
95
96    /**
97     * {@link PackageInfo} flag: return information about the
98     * signatures included in the package.
99     */
100    public static final int GET_SIGNATURES          = 0x00000040;
101
102    /**
103     * {@link ResolveInfo} flag: return the IntentFilter that
104     * was matched for a particular ResolveInfo in
105     * {@link ResolveInfo#filter}.
106     */
107    public static final int GET_RESOLVED_FILTER         = 0x00000040;
108
109    /**
110     * {@link ComponentInfo} flag: return the {@link ComponentInfo#metaData}
111     * data {@link android.os.Bundle}s that are associated with a component.
112     * This applies for any API returning a ComponentInfo subclass.
113     */
114    public static final int GET_META_DATA               = 0x00000080;
115
116    /**
117     * {@link PackageInfo} flag: return the
118     * {@link PackageInfo#gids group ids} that are associated with an
119     * application.
120     * This applies for any API returning an PackageInfo class, either
121     * directly or nested inside of another.
122     */
123    public static final int GET_GIDS                    = 0x00000100;
124
125    /**
126     * {@link PackageInfo} flag: include disabled components in the returned info.
127     */
128    public static final int GET_DISABLED_COMPONENTS     = 0x00000200;
129
130    /**
131     * {@link ApplicationInfo} flag: return the
132     * {@link ApplicationInfo#sharedLibraryFiles paths to the shared libraries}
133     * that are associated with an application.
134     * This applies for any API returning an ApplicationInfo class, either
135     * directly or nested inside of another.
136     */
137    public static final int GET_SHARED_LIBRARY_FILES    = 0x00000400;
138
139    /**
140     * {@link ProviderInfo} flag: return the
141     * {@link ProviderInfo#uriPermissionPatterns URI permission patterns}
142     * that are associated with a content provider.
143     * This applies for any API returning an ProviderInfo class, either
144     * directly or nested inside of another.
145     */
146    public static final int GET_URI_PERMISSION_PATTERNS  = 0x00000800;
147    /**
148     * {@link PackageInfo} flag: return information about
149     * permissions in the package in
150     * {@link PackageInfo#permissions}.
151     */
152    public static final int GET_PERMISSIONS               = 0x00001000;
153
154    /**
155     * Flag parameter to retrieve all applications(even uninstalled ones) with data directories.
156     * This state could have resulted if applications have been deleted with flag
157     * DONT_DELETE_DATA
158     * with a possibility of being replaced or reinstalled in future
159     */
160    public static final int GET_UNINSTALLED_PACKAGES = 0x00002000;
161
162    /**
163     * {@link PackageInfo} flag: return information about
164     * hardware preferences
165     * {@link PackageInfo#configPreferences}
166     */
167    public static final int GET_CONFIGURATIONS = 0x00004000;
168
169    /**
170     * {@link ApplicationInfo} flag: return the
171     * {@link ApplicationInfo#supportsDensities} that the package supports.
172     */
173    public static final int GET_SUPPORTS_DENSITIES    = 0x00008000;
174
175    /**
176     * Resolution and querying flag: if set, only filters that support the
177     * {@link android.content.Intent#CATEGORY_DEFAULT} will be considered for
178     * matching.  This is a synonym for including the CATEGORY_DEFAULT in your
179     * supplied Intent.
180     */
181    public static final int MATCH_DEFAULT_ONLY   = 0x00010000;
182
183    /**
184     * Permission check result: this is returned by {@link #checkPermission}
185     * if the permission has been granted to the given package.
186     */
187    public static final int PERMISSION_GRANTED = 0;
188
189    /**
190     * Permission check result: this is returned by {@link #checkPermission}
191     * if the permission has not been granted to the given package.
192     */
193    public static final int PERMISSION_DENIED = -1;
194
195    /**
196     * Signature check result: this is returned by {@link #checkSignatures}
197     * if the two packages have a matching signature.
198     */
199    public static final int SIGNATURE_MATCH = 0;
200
201    /**
202     * Signature check result: this is returned by {@link #checkSignatures}
203     * if neither of the two packages is signed.
204     */
205    public static final int SIGNATURE_NEITHER_SIGNED = 1;
206
207    /**
208     * Signature check result: this is returned by {@link #checkSignatures}
209     * if the first package is not signed, but the second is.
210     */
211    public static final int SIGNATURE_FIRST_NOT_SIGNED = -1;
212
213    /**
214     * Signature check result: this is returned by {@link #checkSignatures}
215     * if the second package is not signed, but the first is.
216     */
217    public static final int SIGNATURE_SECOND_NOT_SIGNED = -2;
218
219    /**
220     * Signature check result: this is returned by {@link #checkSignatures}
221     * if both packages are signed but there is no matching signature.
222     */
223    public static final int SIGNATURE_NO_MATCH = -3;
224
225    /**
226     * Signature check result: this is returned by {@link #checkSignatures}
227     * if either of the given package names are not valid.
228     */
229    public static final int SIGNATURE_UNKNOWN_PACKAGE = -4;
230
231    public static final int COMPONENT_ENABLED_STATE_DEFAULT = 0;
232    public static final int COMPONENT_ENABLED_STATE_ENABLED = 1;
233    public static final int COMPONENT_ENABLED_STATE_DISABLED = 2;
234
235    /**
236     * Flag parameter for {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} to
237     * indicate that this package should be installed as forward locked, i.e. only the app itself
238     * should have access to it's code and non-resource assets.
239     * @hide
240     */
241    public static final int INSTALL_FORWARD_LOCK = 0x00000001;
242
243    /**
244     * Flag parameter for {@link #installPackage} to indicate that you want to replace an already
245     * installed package, if one exists.
246     * @hide
247     */
248    public static final int INSTALL_REPLACE_EXISTING = 0x00000002;
249
250    /**
251     * Flag parameter for {@link #installPackage} to indicate that you want to
252     * allow test packages (those that have set android:testOnly in their
253     * manifest) to be installed.
254     * @hide
255     */
256    public static final int INSTALL_ALLOW_TEST = 0x00000004;
257
258    /**
259     * Flag parameter for
260     * {@link #setComponentEnabledSetting(android.content.ComponentName, int, int)} to indicate
261     * that you don't want to kill the app containing the component.  Be careful when you set this
262     * since changing component states can make the containing application's behavior unpredictable.
263     */
264    public static final int DONT_KILL_APP = 0x00000001;
265
266    /**
267     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
268     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} on success.
269     * @hide
270     */
271    public static final int INSTALL_SUCCEEDED = 1;
272
273    /**
274     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
275     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package is
276     * already installed.
277     * @hide
278     */
279    public static final int INSTALL_FAILED_ALREADY_EXISTS = -1;
280
281    /**
282     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
283     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package archive
284     * file is invalid.
285     * @hide
286     */
287    public static final int INSTALL_FAILED_INVALID_APK = -2;
288
289    /**
290     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
291     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the URI passed in
292     * is invalid.
293     * @hide
294     */
295    public static final int INSTALL_FAILED_INVALID_URI = -3;
296
297    /**
298     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
299     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package manager
300     * service found that the device didn't have enough storage space to install the app.
301     * @hide
302     */
303    public static final int INSTALL_FAILED_INSUFFICIENT_STORAGE = -4;
304
305    /**
306     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
307     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if a
308     * package is already installed with the same name.
309     * @hide
310     */
311    public static final int INSTALL_FAILED_DUPLICATE_PACKAGE = -5;
312
313    /**
314     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
315     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
316     * the requested shared user does not exist.
317     * @hide
318     */
319    public static final int INSTALL_FAILED_NO_SHARED_USER = -6;
320
321    /**
322     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
323     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
324     * a previously installed package of the same name has a different signature
325     * than the new package (and the old package's data was not removed).
326     * @hide
327     */
328    public static final int INSTALL_FAILED_UPDATE_INCOMPATIBLE = -7;
329
330    /**
331     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
332     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
333     * the new package is requested a shared user which is already installed on the
334     * device and does not have matching signature.
335     * @hide
336     */
337    public static final int INSTALL_FAILED_SHARED_USER_INCOMPATIBLE = -8;
338
339    /**
340     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
341     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
342     * the new package uses a shared library that is not available.
343     * @hide
344     */
345    public static final int INSTALL_FAILED_MISSING_SHARED_LIBRARY = -9;
346
347    /**
348     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
349     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
350     * the new package uses a shared library that is not available.
351     * @hide
352     */
353    public static final int INSTALL_FAILED_REPLACE_COULDNT_DELETE = -10;
354
355    /**
356     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
357     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
358     * the new package failed while optimizing and validating its dex files,
359     * either because there was not enough storage or the validation failed.
360     * @hide
361     */
362    public static final int INSTALL_FAILED_DEXOPT = -11;
363
364    /**
365     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
366     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
367     * the new package failed because the current SDK version is older than
368     * that required by the package.
369     * @hide
370     */
371    public static final int INSTALL_FAILED_OLDER_SDK = -12;
372
373    /**
374     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
375     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
376     * the new package failed because it contains a content provider with the
377     * same authority as a provider already installed in the system.
378     * @hide
379     */
380    public static final int INSTALL_FAILED_CONFLICTING_PROVIDER = -13;
381
382    /**
383     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
384     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
385     * the new package failed because the current SDK version is newer than
386     * that required by the package.
387     * @hide
388     */
389    public static final int INSTALL_FAILED_NEWER_SDK = -14;
390
391    /**
392     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
393     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
394     * the new package failed because it has specified that it is a test-only
395     * package and the caller has not supplied the {@link #INSTALL_ALLOW_TEST}
396     * flag.
397     * @hide
398     */
399    public static final int INSTALL_FAILED_TEST_ONLY = -15;
400
401    /**
402     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
403     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
404     * the package being installed contains native code, but none that is
405     * compatible with the the device's CPU_ABI.
406     * @hide
407     */
408    public static final int INSTALL_FAILED_CPU_ABI_INCOMPATIBLE = -16;
409
410    /**
411     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
412     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
413     * if the parser was given a path that is not a file, or does not end with the expected
414     * '.apk' extension.
415     * @hide
416     */
417    public static final int INSTALL_PARSE_FAILED_NOT_APK = -100;
418
419    /**
420     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
421     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
422     * if the parser was unable to retrieve the AndroidManifest.xml file.
423     * @hide
424     */
425    public static final int INSTALL_PARSE_FAILED_BAD_MANIFEST = -101;
426
427    /**
428     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
429     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
430     * if the parser encountered an unexpected exception.
431     * @hide
432     */
433    public static final int INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION = -102;
434
435    /**
436     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
437     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
438     * if the parser did not find any certificates in the .apk.
439     * @hide
440     */
441    public static final int INSTALL_PARSE_FAILED_NO_CERTIFICATES = -103;
442
443    /**
444     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
445     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
446     * if the parser found inconsistent certificates on the files in the .apk.
447     * @hide
448     */
449    public static final int INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES = -104;
450
451    /**
452     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
453     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
454     * if the parser encountered a CertificateEncodingException in one of the
455     * files in the .apk.
456     * @hide
457     */
458    public static final int INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING = -105;
459
460    /**
461     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
462     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
463     * if the parser encountered a bad or missing package name in the manifest.
464     * @hide
465     */
466    public static final int INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME = -106;
467
468    /**
469     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
470     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
471     * if the parser encountered a bad shared user id name in the manifest.
472     * @hide
473     */
474    public static final int INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID = -107;
475
476    /**
477     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
478     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
479     * if the parser encountered some structural problem in the manifest.
480     * @hide
481     */
482    public static final int INSTALL_PARSE_FAILED_MANIFEST_MALFORMED = -108;
483
484    /**
485     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
486     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
487     * if the parser did not find any actionable tags (instrumentation or application)
488     * in the manifest.
489     * @hide
490     */
491    public static final int INSTALL_PARSE_FAILED_MANIFEST_EMPTY = -109;
492
493    /**
494     * Indicates the state of installation. Used by PackageManager to
495     * figure out incomplete installations. Say a package is being installed
496     * (the state is set to PKG_INSTALL_INCOMPLETE) and remains so till
497     * the package installation is successful or unsuccesful lin which case
498     * the PackageManager will no longer maintain state information associated
499     * with the package. If some exception(like device freeze or battery being
500     * pulled out) occurs during installation of a package, the PackageManager
501     * needs this information to clean up the previously failed installation.
502     */
503    public static final int PKG_INSTALL_INCOMPLETE = 0;
504    public static final int PKG_INSTALL_COMPLETE = 1;
505
506    /**
507     * Flag parameter for {@link #deletePackage} to indicate that you don't want to delete the
508     * package's data directory.
509     *
510     * @hide
511     */
512    public static final int DONT_DELETE_DATA = 0x00000001;
513
514    /**
515     * Retrieve overall information about an application package that is
516     * installed on the system.
517     *
518     * <p>Throws {@link NameNotFoundException} if a package with the given
519     * name can not be found on the system.
520     *
521     * @param packageName The full name (i.e. com.google.apps.contacts) of the
522     *                    desired package.
523
524     * @param flags Additional option flags. Use any combination of
525     * {@link #GET_ACTIVITIES},
526     * {@link #GET_GIDS},
527     * {@link #GET_CONFIGURATIONS},
528     * {@link #GET_INSTRUMENTATION},
529     * {@link #GET_PERMISSIONS},
530     * {@link #GET_PROVIDERS},
531     * {@link #GET_RECEIVERS},
532     * {@link #GET_SERVICES},
533     * {@link #GET_SIGNATURES},
534     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
535     *
536     * @return Returns a PackageInfo object containing information about the package.
537     *         If flag GET_UNINSTALLED_PACKAGES is set and  if the package is not
538     *         found in the list of installed applications, the package information is
539     *         retrieved from the list of uninstalled applications(which includes
540     *         installed applications as well as applications
541     *         with data directory ie applications which had been
542     *         deleted with DONT_DELTE_DATA flag set).
543     *
544     * @see #GET_ACTIVITIES
545     * @see #GET_GIDS
546     * @see #GET_CONFIGURATIONS
547     * @see #GET_INSTRUMENTATION
548     * @see #GET_PERMISSIONS
549     * @see #GET_PROVIDERS
550     * @see #GET_RECEIVERS
551     * @see #GET_SERVICES
552     * @see #GET_SIGNATURES
553     * @see #GET_UNINSTALLED_PACKAGES
554     *
555     */
556    public abstract PackageInfo getPackageInfo(String packageName, int flags)
557            throws NameNotFoundException;
558
559    /**
560     * Return a "good" intent to launch a front-door activity in a package,
561     * for use for example to implement an "open" button when browsing through
562     * packages.  The current implementation will look first for a main
563     * activity in the category {@link Intent#CATEGORY_INFO}, next for a
564     * main activity in the category {@link Intent#CATEGORY_LAUNCHER}, or return
565     * null if neither are found.
566     *
567     * <p>Throws {@link NameNotFoundException} if a package with the given
568     * name can not be found on the system.
569     *
570     * @param packageName The name of the package to inspect.
571     *
572     * @return Returns either a fully-qualified Intent that can be used to
573     * launch the main activity in the package, or null if the package does
574     * not contain such an activity.
575     */
576    public abstract Intent getLaunchIntentForPackage(String packageName);
577
578    /**
579     * Return an array of all of the secondary group-ids that have been
580     * assigned to a package.
581     *
582     * <p>Throws {@link NameNotFoundException} if a package with the given
583     * name can not be found on the system.
584     *
585     * @param packageName The full name (i.e. com.google.apps.contacts) of the
586     *                    desired package.
587     *
588     * @return Returns an int array of the assigned gids, or null if there
589     * are none.
590     */
591    public abstract int[] getPackageGids(String packageName)
592            throws NameNotFoundException;
593
594    /**
595     * Retrieve all of the information we know about a particular permission.
596     *
597     * <p>Throws {@link NameNotFoundException} if a permission with the given
598     * name can not be found on the system.
599     *
600     * @param name The fully qualified name (i.e. com.google.permission.LOGIN)
601     *             of the permission you are interested in.
602     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
603     * retrieve any meta-data associated with the permission.
604     *
605     * @return Returns a {@link PermissionInfo} containing information about the
606     *         permission.
607     */
608    public abstract PermissionInfo getPermissionInfo(String name, int flags)
609            throws NameNotFoundException;
610
611    /**
612     * Query for all of the permissions associated with a particular group.
613     *
614     * <p>Throws {@link NameNotFoundException} if the given group does not
615     * exist.
616     *
617     * @param group The fully qualified name (i.e. com.google.permission.LOGIN)
618     *             of the permission group you are interested in.  Use null to
619     *             find all of the permissions not associated with a group.
620     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
621     * retrieve any meta-data associated with the permissions.
622     *
623     * @return Returns a list of {@link PermissionInfo} containing information
624     * about all of the permissions in the given group.
625     */
626    public abstract List<PermissionInfo> queryPermissionsByGroup(String group,
627            int flags) throws NameNotFoundException;
628
629    /**
630     * Retrieve all of the information we know about a particular group of
631     * permissions.
632     *
633     * <p>Throws {@link NameNotFoundException} if a permission group with the given
634     * name can not be found on the system.
635     *
636     * @param name The fully qualified name (i.e. com.google.permission_group.APPS)
637     *             of the permission you are interested in.
638     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
639     * retrieve any meta-data associated with the permission group.
640     *
641     * @return Returns a {@link PermissionGroupInfo} containing information
642     * about the permission.
643     */
644    public abstract PermissionGroupInfo getPermissionGroupInfo(String name,
645            int flags) throws NameNotFoundException;
646
647    /**
648     * Retrieve all of the known permission groups in the system.
649     *
650     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
651     * retrieve any meta-data associated with the permission group.
652     *
653     * @return Returns a list of {@link PermissionGroupInfo} containing
654     * information about all of the known permission groups.
655     */
656    public abstract List<PermissionGroupInfo> getAllPermissionGroups(int flags);
657
658    /**
659     * Retrieve all of the information we know about a particular
660     * package/application.
661     *
662     * <p>Throws {@link NameNotFoundException} if an application with the given
663     * package name can not be found on the system.
664     *
665     * @param packageName The full name (i.e. com.google.apps.contacts) of an
666     *                    application.
667     * @param flags Additional option flags. Use any combination of
668     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
669     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
670     *
671     * @return  {@link ApplicationInfo} Returns ApplicationInfo object containing
672     *         information about the package.
673     *         If flag GET_UNINSTALLED_PACKAGES is set and  if the package is not
674     *         found in the list of installed applications,
675     *         the application information is retrieved from the
676     *         list of uninstalled applications(which includes
677     *         installed applications as well as applications
678     *         with data directory ie applications which had been
679     *         deleted with DONT_DELTE_DATA flag set).
680     *
681     * @see #GET_META_DATA
682     * @see #GET_SHARED_LIBRARY_FILES
683     * @see #GET_UNINSTALLED_PACKAGES
684     */
685    public abstract ApplicationInfo getApplicationInfo(String packageName,
686            int flags) throws NameNotFoundException;
687
688    /**
689     * Retrieve all of the information we know about a particular activity
690     * class.
691     *
692     * <p>Throws {@link NameNotFoundException} if an activity with the given
693     * class name can not be found on the system.
694     *
695     * @param className The full name (i.e.
696     *                  com.google.apps.contacts.ContactsList) of an Activity
697     *                  class.
698     * @param flags Additional option flags. Use any combination of
699     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
700     * to modify the data (in ApplicationInfo) returned.
701     *
702     * @return {@link ActivityInfo} containing information about the activity.
703     *
704     * @see #GET_INTENT_FILTERS
705     * @see #GET_META_DATA
706     * @see #GET_SHARED_LIBRARY_FILES
707     */
708    public abstract ActivityInfo getActivityInfo(ComponentName className,
709            int flags) throws NameNotFoundException;
710
711    /**
712     * Retrieve all of the information we know about a particular receiver
713     * class.
714     *
715     * <p>Throws {@link NameNotFoundException} if a receiver with the given
716     * class name can not be found on the system.
717     *
718     * @param className The full name (i.e.
719     *                  com.google.apps.contacts.CalendarAlarm) of a Receiver
720     *                  class.
721     * @param flags Additional option flags.  Use any combination of
722     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
723     * to modify the data returned.
724     *
725     * @return {@link ActivityInfo} containing information about the receiver.
726     *
727     * @see #GET_INTENT_FILTERS
728     * @see #GET_META_DATA
729     * @see #GET_SHARED_LIBRARY_FILES
730     */
731    public abstract ActivityInfo getReceiverInfo(ComponentName className,
732            int flags) throws NameNotFoundException;
733
734    /**
735     * Retrieve all of the information we know about a particular service
736     * class.
737     *
738     * <p>Throws {@link NameNotFoundException} if a service with the given
739     * class name can not be found on the system.
740     *
741     * @param className The full name (i.e.
742     *                  com.google.apps.media.BackgroundPlayback) of a Service
743     *                  class.
744     * @param flags Additional option flags.  Use any combination of
745     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
746     * to modify the data returned.
747     *
748     * @return ServiceInfo containing information about the service.
749     *
750     * @see #GET_META_DATA
751     * @see #GET_SHARED_LIBRARY_FILES
752     */
753    public abstract ServiceInfo getServiceInfo(ComponentName className,
754            int flags) throws NameNotFoundException;
755
756    /**
757     * Return a List of all packages that are installed
758     * on the device.
759     *
760     * @param flags Additional option flags. Use any combination of
761     * {@link #GET_ACTIVITIES},
762     * {@link #GET_GIDS},
763     * {@link #GET_CONFIGURATIONS},
764     * {@link #GET_INSTRUMENTATION},
765     * {@link #GET_PERMISSIONS},
766     * {@link #GET_PROVIDERS},
767     * {@link #GET_RECEIVERS},
768     * {@link #GET_SERVICES},
769     * {@link #GET_SIGNATURES},
770     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
771     *
772     * @return A List of PackageInfo objects, one for each package that is
773     *         installed on the device.  In the unlikely case of there being no
774     *         installed packages, an empty list is returned.
775     *         If flag GET_UNINSTALLED_PACKAGES is set, a list of all
776     *         applications including those deleted with DONT_DELETE_DATA
777     *         (partially installed apps with data directory) will be returned.
778     *
779     * @see #GET_ACTIVITIES
780     * @see #GET_GIDS
781     * @see #GET_CONFIGURATIONS
782     * @see #GET_INSTRUMENTATION
783     * @see #GET_PERMISSIONS
784     * @see #GET_PROVIDERS
785     * @see #GET_RECEIVERS
786     * @see #GET_SERVICES
787     * @see #GET_SIGNATURES
788     * @see #GET_UNINSTALLED_PACKAGES
789     *
790     */
791    public abstract List<PackageInfo> getInstalledPackages(int flags);
792
793    /**
794     * Check whether a particular package has been granted a particular
795     * permission.
796     *
797     * @param permName The name of the permission you are checking for,
798     * @param pkgName The name of the package you are checking against.
799     *
800     * @return If the package has the permission, PERMISSION_GRANTED is
801     * returned.  If it does not have the permission, PERMISSION_DENIED
802     * is returned.
803     *
804     * @see #PERMISSION_GRANTED
805     * @see #PERMISSION_DENIED
806     */
807    public abstract int checkPermission(String permName, String pkgName);
808
809    /**
810     * Add a new dynamic permission to the system.  For this to work, your
811     * package must have defined a permission tree through the
812     * {@link android.R.styleable#AndroidManifestPermissionTree
813     * &lt;permission-tree&gt;} tag in its manifest.  A package can only add
814     * permissions to trees that were defined by either its own package or
815     * another with the same user id; a permission is in a tree if it
816     * matches the name of the permission tree + ".": for example,
817     * "com.foo.bar" is a member of the permission tree "com.foo".
818     *
819     * <p>It is good to make your permission tree name descriptive, because you
820     * are taking possession of that entire set of permission names.  Thus, it
821     * must be under a domain you control, with a suffix that will not match
822     * any normal permissions that may be declared in any applications that
823     * are part of that domain.
824     *
825     * <p>New permissions must be added before
826     * any .apks are installed that use those permissions.  Permissions you
827     * add through this method are remembered across reboots of the device.
828     * If the given permission already exists, the info you supply here
829     * will be used to update it.
830     *
831     * @param info Description of the permission to be added.
832     *
833     * @return Returns true if a new permission was created, false if an
834     * existing one was updated.
835     *
836     * @throws SecurityException if you are not allowed to add the
837     * given permission name.
838     *
839     * @see #removePermission(String)
840     */
841    public abstract boolean addPermission(PermissionInfo info);
842
843    /**
844     * Removes a permission that was previously added with
845     * {@link #addPermission(PermissionInfo)}.  The same ownership rules apply
846     * -- you are only allowed to remove permissions that you are allowed
847     * to add.
848     *
849     * @param name The name of the permission to remove.
850     *
851     * @throws SecurityException if you are not allowed to remove the
852     * given permission name.
853     *
854     * @see #addPermission(PermissionInfo)
855     */
856    public abstract void removePermission(String name);
857
858    /**
859     * Compare the signatures of two packages to determine if the same
860     * signature appears in both of them.  If they do contain the same
861     * signature, then they are allowed special privileges when working
862     * with each other: they can share the same user-id, run instrumentation
863     * against each other, etc.
864     *
865     * @param pkg1 First package name whose signature will be compared.
866     * @param pkg2 Second package name whose signature will be compared.
867     * @return Returns an integer indicating whether there is a matching
868     * signature: the value is >= 0 if there is a match (or neither package
869     * is signed), or < 0 if there is not a match.  The match result can be
870     * further distinguished with the success (>= 0) constants
871     * {@link #SIGNATURE_MATCH}, {@link #SIGNATURE_NEITHER_SIGNED}; or
872     * failure (< 0) constants {@link #SIGNATURE_FIRST_NOT_SIGNED},
873     * {@link #SIGNATURE_SECOND_NOT_SIGNED}, {@link #SIGNATURE_NO_MATCH},
874     * or {@link #SIGNATURE_UNKNOWN_PACKAGE}.
875     *
876     * @see #SIGNATURE_MATCH
877     * @see #SIGNATURE_NEITHER_SIGNED
878     * @see #SIGNATURE_FIRST_NOT_SIGNED
879     * @see #SIGNATURE_SECOND_NOT_SIGNED
880     * @see #SIGNATURE_NO_MATCH
881     * @see #SIGNATURE_UNKNOWN_PACKAGE
882     */
883    public abstract int checkSignatures(String pkg1, String pkg2);
884
885    /**
886     * Retrieve the names of all packages that are associated with a particular
887     * user id.  In most cases, this will be a single package name, the package
888     * that has been assigned that user id.  Where there are multiple packages
889     * sharing the same user id through the "sharedUserId" mechanism, all
890     * packages with that id will be returned.
891     *
892     * @param uid The user id for which you would like to retrieve the
893     * associated packages.
894     *
895     * @return Returns an array of one or more packages assigned to the user
896     * id, or null if there are no known packages with the given id.
897     */
898    public abstract String[] getPackagesForUid(int uid);
899
900    /**
901     * Retrieve the official name associated with a user id.  This name is
902     * guaranteed to never change, though it is possibly for the underlying
903     * user id to be changed.  That is, if you are storing information about
904     * user ids in persistent storage, you should use the string returned
905     * by this function instead of the raw user-id.
906     *
907     * @param uid The user id for which you would like to retrieve a name.
908     * @return Returns a unique name for the given user id, or null if the
909     * user id is not currently assigned.
910     */
911    public abstract String getNameForUid(int uid);
912
913    /**
914     * Return the user id associated with a shared user name. Multiple
915     * applications can specify a shared user name in their manifest and thus
916     * end up using a common uid. This might be used for new applications
917     * that use an existing shared user name and need to know the uid of the
918     * shared user.
919     *
920     * @param sharedUserName The shared user name whose uid is to be retrieved.
921     * @return Returns the uid associated with the shared user, or  NameNotFoundException
922     * if the shared user name is not being used by any installed packages
923     * @hide
924     */
925    public abstract int getUidForSharedUser(String sharedUserName)
926            throws NameNotFoundException;
927
928    /**
929     * Return a List of all application packages that are installed on the
930     * device. If flag GET_UNINSTALLED_PACKAGES has been set, a list of all
931     * applications including those deleted with DONT_DELETE_DATA(partially
932     * installed apps with data directory) will be returned.
933     *
934     * @param flags Additional option flags. Use any combination of
935     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
936     * {link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
937     *
938     * @return A List of ApplicationInfo objects, one for each application that
939     *         is installed on the device.  In the unlikely case of there being
940     *         no installed applications, an empty list is returned.
941     *         If flag GET_UNINSTALLED_PACKAGES is set, a list of all
942     *         applications including those deleted with DONT_DELETE_DATA
943     *         (partially installed apps with data directory) will be returned.
944     *
945     * @see #GET_META_DATA
946     * @see #GET_SHARED_LIBRARY_FILES
947     * @see #GET_UNINSTALLED_PACKAGES
948     */
949    public abstract List<ApplicationInfo> getInstalledApplications(int flags);
950
951    /**
952     * Get a list of shared libraries that are available on the
953     * system.
954     *
955     * @return An array of shared library names that are
956     * available on the system, or null if none are installed.
957     *
958     */
959    public abstract String[] getSystemSharedLibraryNames();
960
961    /**
962     * Determine the best action to perform for a given Intent.  This is how
963     * {@link Intent#resolveActivity} finds an activity if a class has not
964     * been explicitly specified.
965     *
966     * @param intent An intent containing all of the desired specification
967     *               (action, data, type, category, and/or component).
968     * @param flags Additional option flags.  The most important is
969     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
970     *                    those activities that support the CATEGORY_DEFAULT.
971     *
972     * @return Returns a ResolveInfo containing the final activity intent that
973     *         was determined to be the best action.  Returns null if no
974     *         matching activity was found.
975     *
976     * @see #MATCH_DEFAULT_ONLY
977     * @see #GET_INTENT_FILTERS
978     * @see #GET_RESOLVED_FILTER
979     */
980    public abstract ResolveInfo resolveActivity(Intent intent, int flags);
981
982    /**
983     * Retrieve all activities that can be performed for the given intent.
984     *
985     * @param intent The desired intent as per resolveActivity().
986     * @param flags Additional option flags.  The most important is
987     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
988     *                    those activities that support the CATEGORY_DEFAULT.
989     *
990     * @return A List<ResolveInfo> containing one entry for each matching
991     *         Activity. These are ordered from best to worst match -- that
992     *         is, the first item in the list is what is returned by
993     *         resolveActivity().  If there are no matching activities, an empty
994     *         list is returned.
995     *
996     * @see #MATCH_DEFAULT_ONLY
997     * @see #GET_INTENT_FILTERS
998     * @see #GET_RESOLVED_FILTER
999     */
1000    public abstract List<ResolveInfo> queryIntentActivities(Intent intent,
1001            int flags);
1002
1003    /**
1004     * Retrieve a set of activities that should be presented to the user as
1005     * similar options.  This is like {@link #queryIntentActivities}, except it
1006     * also allows you to supply a list of more explicit Intents that you would
1007     * like to resolve to particular options, and takes care of returning the
1008     * final ResolveInfo list in a reasonable order, with no duplicates, based
1009     * on those inputs.
1010     *
1011     * @param caller The class name of the activity that is making the
1012     *               request.  This activity will never appear in the output
1013     *               list.  Can be null.
1014     * @param specifics An array of Intents that should be resolved to the
1015     *                  first specific results.  Can be null.
1016     * @param intent The desired intent as per resolveActivity().
1017     * @param flags Additional option flags.  The most important is
1018     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
1019     *                    those activities that support the CATEGORY_DEFAULT.
1020     *
1021     * @return A List<ResolveInfo> containing one entry for each matching
1022     *         Activity. These are ordered first by all of the intents resolved
1023     *         in <var>specifics</var> and then any additional activities that
1024     *         can handle <var>intent</var> but did not get included by one of
1025     *         the <var>specifics</var> intents.  If there are no matching
1026     *         activities, an empty list is returned.
1027     *
1028     * @see #MATCH_DEFAULT_ONLY
1029     * @see #GET_INTENT_FILTERS
1030     * @see #GET_RESOLVED_FILTER
1031     */
1032    public abstract List<ResolveInfo> queryIntentActivityOptions(
1033            ComponentName caller, Intent[] specifics, Intent intent, int flags);
1034
1035    /**
1036     * Retrieve all receivers that can handle a broadcast of the given intent.
1037     *
1038     * @param intent The desired intent as per resolveActivity().
1039     * @param flags Additional option flags.  The most important is
1040     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
1041     *                    those activities that support the CATEGORY_DEFAULT.
1042     *
1043     * @return A List<ResolveInfo> containing one entry for each matching
1044     *         Receiver. These are ordered from first to last in priority.  If
1045     *         there are no matching receivers, an empty list is returned.
1046     *
1047     * @see #MATCH_DEFAULT_ONLY
1048     * @see #GET_INTENT_FILTERS
1049     * @see #GET_RESOLVED_FILTER
1050     */
1051    public abstract List<ResolveInfo> queryBroadcastReceivers(Intent intent,
1052            int flags);
1053
1054    /**
1055     * Determine the best service to handle for a given Intent.
1056     *
1057     * @param intent An intent containing all of the desired specification
1058     *               (action, data, type, category, and/or component).
1059     * @param flags Additional option flags.
1060     *
1061     * @return Returns a ResolveInfo containing the final service intent that
1062     *         was determined to be the best action.  Returns null if no
1063     *         matching service was found.
1064     *
1065     * @see #GET_INTENT_FILTERS
1066     * @see #GET_RESOLVED_FILTER
1067     */
1068    public abstract ResolveInfo resolveService(Intent intent, int flags);
1069
1070    /**
1071     * Retrieve all services that can match the given intent.
1072     *
1073     * @param intent The desired intent as per resolveService().
1074     * @param flags Additional option flags.
1075     *
1076     * @return A List<ResolveInfo> containing one entry for each matching
1077     *         ServiceInfo. These are ordered from best to worst match -- that
1078     *         is, the first item in the list is what is returned by
1079     *         resolveService().  If there are no matching services, an empty
1080     *         list is returned.
1081     *
1082     * @see #GET_INTENT_FILTERS
1083     * @see #GET_RESOLVED_FILTER
1084     */
1085    public abstract List<ResolveInfo> queryIntentServices(Intent intent,
1086            int flags);
1087
1088    /**
1089     * Find a single content provider by its base path name.
1090     *
1091     * @param name The name of the provider to find.
1092     * @param flags Additional option flags.  Currently should always be 0.
1093     *
1094     * @return ContentProviderInfo Information about the provider, if found,
1095     *         else null.
1096     */
1097    public abstract ProviderInfo resolveContentProvider(String name,
1098            int flags);
1099
1100    /**
1101     * Retrieve content provider information.
1102     *
1103     * <p><em>Note: unlike most other methods, an empty result set is indicated
1104     * by a null return instead of an empty list.</em>
1105     *
1106     * @param processName If non-null, limits the returned providers to only
1107     *                    those that are hosted by the given process.  If null,
1108     *                    all content providers are returned.
1109     * @param uid If <var>processName</var> is non-null, this is the required
1110     *        uid owning the requested content providers.
1111     * @param flags Additional option flags.  Currently should always be 0.
1112     *
1113     * @return A List<ContentProviderInfo> containing one entry for each
1114     *         content provider either patching <var>processName</var> or, if
1115     *         <var>processName</var> is null, all known content providers.
1116     *         <em>If there are no matching providers, null is returned.</em>
1117     */
1118    public abstract List<ProviderInfo> queryContentProviders(
1119            String processName, int uid, int flags);
1120
1121    /**
1122     * Retrieve all of the information we know about a particular
1123     * instrumentation class.
1124     *
1125     * <p>Throws {@link NameNotFoundException} if instrumentation with the
1126     * given class name can not be found on the system.
1127     *
1128     * @param className The full name (i.e.
1129     *                  com.google.apps.contacts.InstrumentList) of an
1130     *                  Instrumentation class.
1131     * @param flags Additional option flags.  Currently should always be 0.
1132     *
1133     * @return InstrumentationInfo containing information about the
1134     *         instrumentation.
1135     */
1136    public abstract InstrumentationInfo getInstrumentationInfo(
1137            ComponentName className, int flags) throws NameNotFoundException;
1138
1139    /**
1140     * Retrieve information about available instrumentation code.  May be used
1141     * to retrieve either all instrumentation code, or only the code targeting
1142     * a particular package.
1143     *
1144     * @param targetPackage If null, all instrumentation is returned; only the
1145     *                      instrumentation targeting this package name is
1146     *                      returned.
1147     * @param flags Additional option flags.  Currently should always be 0.
1148     *
1149     * @return A List<InstrumentationInfo> containing one entry for each
1150     *         matching available Instrumentation.  Returns an empty list if
1151     *         there is no instrumentation available for the given package.
1152     */
1153    public abstract List<InstrumentationInfo> queryInstrumentation(
1154            String targetPackage, int flags);
1155
1156    /**
1157     * Retrieve an image from a package.  This is a low-level API used by
1158     * the various package manager info structures (such as
1159     * {@link ComponentInfo} to implement retrieval of their associated
1160     * icon.
1161     *
1162     * @param packageName The name of the package that this icon is coming from.
1163     * Can not be null.
1164     * @param resid The resource identifier of the desired image.  Can not be 0.
1165     * @param appInfo Overall information about <var>packageName</var>.  This
1166     * may be null, in which case the application information will be retrieved
1167     * for you if needed; if you already have this information around, it can
1168     * be much more efficient to supply it here.
1169     *
1170     * @return Returns a Drawable holding the requested image.  Returns null if
1171     * an image could not be found for any reason.
1172     */
1173    public abstract Drawable getDrawable(String packageName, int resid,
1174            ApplicationInfo appInfo);
1175
1176    /**
1177     * Retrieve the icon associated with an activity.  Given the full name of
1178     * an activity, retrieves the information about it and calls
1179     * {@link ComponentInfo#loadIcon ComponentInfo.loadIcon()} to return its icon.
1180     * If the activity can not be found, NameNotFoundException is thrown.
1181     *
1182     * @param activityName Name of the activity whose icon is to be retrieved.
1183     *
1184     * @return Returns the image of the icon, or the default activity icon if
1185     * it could not be found.  Does not return null.
1186     * @throws NameNotFoundException Thrown if the resources for the given
1187     * activity could not be loaded.
1188     *
1189     * @see #getActivityIcon(Intent)
1190     */
1191    public abstract Drawable getActivityIcon(ComponentName activityName)
1192            throws NameNotFoundException;
1193
1194    /**
1195     * Retrieve the icon associated with an Intent.  If intent.getClassName() is
1196     * set, this simply returns the result of
1197     * getActivityIcon(intent.getClassName()).  Otherwise it resolves the intent's
1198     * component and returns the icon associated with the resolved component.
1199     * If intent.getClassName() can not be found or the Intent can not be resolved
1200     * to a component, NameNotFoundException is thrown.
1201     *
1202     * @param intent The intent for which you would like to retrieve an icon.
1203     *
1204     * @return Returns the image of the icon, or the default activity icon if
1205     * it could not be found.  Does not return null.
1206     * @throws NameNotFoundException Thrown if the resources for application
1207     * matching the given intent could not be loaded.
1208     *
1209     * @see #getActivityIcon(ComponentName)
1210     */
1211    public abstract Drawable getActivityIcon(Intent intent)
1212            throws NameNotFoundException;
1213
1214    /**
1215     * Return the generic icon for an activity that is used when no specific
1216     * icon is defined.
1217     *
1218     * @return Drawable Image of the icon.
1219     */
1220    public abstract Drawable getDefaultActivityIcon();
1221
1222    /**
1223     * Retrieve the icon associated with an application.  If it has not defined
1224     * an icon, the default app icon is returned.  Does not return null.
1225     *
1226     * @param info Information about application being queried.
1227     *
1228     * @return Returns the image of the icon, or the default application icon
1229     * if it could not be found.
1230     *
1231     * @see #getApplicationIcon(String)
1232     */
1233    public abstract Drawable getApplicationIcon(ApplicationInfo info);
1234
1235    /**
1236     * Retrieve the icon associated with an application.  Given the name of the
1237     * application's package, retrieves the information about it and calls
1238     * getApplicationIcon() to return its icon. If the application can not be
1239     * found, NameNotFoundException is thrown.
1240     *
1241     * @param packageName Name of the package whose application icon is to be
1242     *                    retrieved.
1243     *
1244     * @return Returns the image of the icon, or the default application icon
1245     * if it could not be found.  Does not return null.
1246     * @throws NameNotFoundException Thrown if the resources for the given
1247     * application could not be loaded.
1248     *
1249     * @see #getApplicationIcon(ApplicationInfo)
1250     */
1251    public abstract Drawable getApplicationIcon(String packageName)
1252            throws NameNotFoundException;
1253
1254    /**
1255     * Retrieve text from a package.  This is a low-level API used by
1256     * the various package manager info structures (such as
1257     * {@link ComponentInfo} to implement retrieval of their associated
1258     * labels and other text.
1259     *
1260     * @param packageName The name of the package that this text is coming from.
1261     * Can not be null.
1262     * @param resid The resource identifier of the desired text.  Can not be 0.
1263     * @param appInfo Overall information about <var>packageName</var>.  This
1264     * may be null, in which case the application information will be retrieved
1265     * for you if needed; if you already have this information around, it can
1266     * be much more efficient to supply it here.
1267     *
1268     * @return Returns a CharSequence holding the requested text.  Returns null
1269     * if the text could not be found for any reason.
1270     */
1271    public abstract CharSequence getText(String packageName, int resid,
1272            ApplicationInfo appInfo);
1273
1274    /**
1275     * Retrieve an XML file from a package.  This is a low-level API used to
1276     * retrieve XML meta data.
1277     *
1278     * @param packageName The name of the package that this xml is coming from.
1279     * Can not be null.
1280     * @param resid The resource identifier of the desired xml.  Can not be 0.
1281     * @param appInfo Overall information about <var>packageName</var>.  This
1282     * may be null, in which case the application information will be retrieved
1283     * for you if needed; if you already have this information around, it can
1284     * be much more efficient to supply it here.
1285     *
1286     * @return Returns an XmlPullParser allowing you to parse out the XML
1287     * data.  Returns null if the xml resource could not be found for any
1288     * reason.
1289     */
1290    public abstract XmlResourceParser getXml(String packageName, int resid,
1291            ApplicationInfo appInfo);
1292
1293    /**
1294     * Return the label to use for this application.
1295     *
1296     * @return Returns the label associated with this application, or null if
1297     * it could not be found for any reason.
1298     * @param info The application to get the label of
1299     */
1300    public abstract CharSequence getApplicationLabel(ApplicationInfo info);
1301
1302    /**
1303     * Retrieve the resources associated with an activity.  Given the full
1304     * name of an activity, retrieves the information about it and calls
1305     * getResources() to return its application's resources.  If the activity
1306     * can not be found, NameNotFoundException is thrown.
1307     *
1308     * @param activityName Name of the activity whose resources are to be
1309     *                     retrieved.
1310     *
1311     * @return Returns the application's Resources.
1312     * @throws NameNotFoundException Thrown if the resources for the given
1313     * application could not be loaded.
1314     *
1315     * @see #getResourcesForApplication(ApplicationInfo)
1316     */
1317    public abstract Resources getResourcesForActivity(ComponentName activityName)
1318            throws NameNotFoundException;
1319
1320    /**
1321     * Retrieve the resources for an application.  Throws NameNotFoundException
1322     * if the package is no longer installed.
1323     *
1324     * @param app Information about the desired application.
1325     *
1326     * @return Returns the application's Resources.
1327     * @throws NameNotFoundException Thrown if the resources for the given
1328     * application could not be loaded (most likely because it was uninstalled).
1329     */
1330    public abstract Resources getResourcesForApplication(ApplicationInfo app)
1331            throws NameNotFoundException;
1332
1333    /**
1334     * Retrieve the resources associated with an application.  Given the full
1335     * package name of an application, retrieves the information about it and
1336     * calls getResources() to return its application's resources.  If the
1337     * appPackageName can not be found, NameNotFoundException is thrown.
1338     *
1339     * @param appPackageName Package name of the application whose resources
1340     *                       are to be retrieved.
1341     *
1342     * @return Returns the application's Resources.
1343     * @throws NameNotFoundException Thrown if the resources for the given
1344     * application could not be loaded.
1345     *
1346     * @see #getResourcesForApplication(ApplicationInfo)
1347     */
1348    public abstract Resources getResourcesForApplication(String appPackageName)
1349            throws NameNotFoundException;
1350
1351    /**
1352     * Retrieve overall information about an application package defined
1353     * in a package archive file
1354     *
1355     * @param archiveFilePath The path to the archive file
1356     * @param flags Additional option flags. Use any combination of
1357     * {@link #GET_ACTIVITIES},
1358     * {@link #GET_GIDS},
1359     * {@link #GET_CONFIGURATIONS},
1360     * {@link #GET_INSTRUMENTATION},
1361     * {@link #GET_PERMISSIONS},
1362     * {@link #GET_PROVIDERS},
1363     * {@link #GET_RECEIVERS},
1364     * {@link #GET_SERVICES},
1365     * {@link #GET_SIGNATURES}, to modify the data returned.
1366     *
1367     * @return Returns the information about the package. Returns
1368     * null if the package could not be successfully parsed.
1369     *
1370     * @see #GET_ACTIVITIES
1371     * @see #GET_GIDS
1372     * @see #GET_CONFIGURATIONS
1373     * @see #GET_INSTRUMENTATION
1374     * @see #GET_PERMISSIONS
1375     * @see #GET_PROVIDERS
1376     * @see #GET_RECEIVERS
1377     * @see #GET_SERVICES
1378     * @see #GET_SIGNATURES
1379     *
1380     */
1381    public PackageInfo getPackageArchiveInfo(String archiveFilePath, int flags) {
1382        PackageParser packageParser = new PackageParser(archiveFilePath);
1383        DisplayMetrics metrics = new DisplayMetrics();
1384        metrics.setToDefaults();
1385        final File sourceFile = new File(archiveFilePath);
1386        PackageParser.Package pkg = packageParser.parsePackage(
1387                sourceFile, archiveFilePath, metrics, 0);
1388        if (pkg == null) {
1389            return null;
1390        }
1391        return PackageParser.generatePackageInfo(pkg, null, flags);
1392    }
1393
1394    /**
1395     * @hide
1396     *
1397     * Install a package. Since this may take a little while, the result will
1398     * be posted back to the given observer.  An installation will fail if the calling context
1399     * lacks the {@link android.Manifest.permission#INSTALL_PACKAGES} permission, if the
1400     * package named in the package file's manifest is already installed, or if there's no space
1401     * available on the device.
1402     *
1403     * @param packageURI The location of the package file to install.  This can be a 'file:' or a
1404     * 'content:' URI.
1405     * @param observer An observer callback to get notified when the package installation is
1406     * complete. {@link IPackageInstallObserver#packageInstalled(String, int)} will be
1407     * called when that happens.  observer may be null to indicate that no callback is desired.
1408     * @param flags - possible values: {@link #INSTALL_FORWARD_LOCK},
1409     * {@link #INSTALL_REPLACE_EXISTING}, {@link #INSTALL_ALLOW_TEST}.
1410     * @param installerPackageName Optional package name of the application that is performing the
1411     * installation. This identifies which market the package came from.
1412     */
1413    public abstract void installPackage(
1414            Uri packageURI, IPackageInstallObserver observer, int flags,
1415            String installerPackageName);
1416
1417    /**
1418     * Attempts to delete a package.  Since this may take a little while, the result will
1419     * be posted back to the given observer.  A deletion will fail if the calling context
1420     * lacks the {@link android.Manifest.permission#DELETE_PACKAGES} permission, if the
1421     * named package cannot be found, or if the named package is a "system package".
1422     * (TODO: include pointer to documentation on "system packages")
1423     *
1424     * @param packageName The name of the package to delete
1425     * @param observer An observer callback to get notified when the package deletion is
1426     * complete. {@link android.content.pm.IPackageDeleteObserver#packageDeleted(boolean)} will be
1427     * called when that happens.  observer may be null to indicate that no callback is desired.
1428     * @param flags - possible values: {@link #DONT_DELETE_DATA}
1429     *
1430     * @hide
1431     */
1432    public abstract void deletePackage(
1433            String packageName, IPackageDeleteObserver observer, int flags);
1434
1435    /**
1436     * Retrieve the package name of the application that installed a package. This identifies
1437     * which market the package came from.
1438     *
1439     * @param packageName The name of the package to query
1440     */
1441    public abstract String getInstallerPackageName(String packageName);
1442
1443    /**
1444     * Attempts to clear the user data directory of an application.
1445     * Since this may take a little while, the result will
1446     * be posted back to the given observer.  A deletion will fail if the
1447     * named package cannot be found, or if the named package is a "system package".
1448     *
1449     * @param packageName The name of the package
1450     * @param observer An observer callback to get notified when the operation is finished
1451     * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
1452     * will be called when that happens.  observer may be null to indicate that
1453     * no callback is desired.
1454     *
1455     * @hide
1456     */
1457    public abstract void clearApplicationUserData(String packageName,
1458            IPackageDataObserver observer);
1459    /**
1460     * Attempts to delete the cache files associated with an application.
1461     * Since this may take a little while, the result will
1462     * be posted back to the given observer.  A deletion will fail if the calling context
1463     * lacks the {@link android.Manifest.permission#DELETE_CACHE_FILES} permission, if the
1464     * named package cannot be found, or if the named package is a "system package".
1465     *
1466     * @param packageName The name of the package to delete
1467     * @param observer An observer callback to get notified when the cache file deletion
1468     * is complete.
1469     * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
1470     * will be called when that happens.  observer may be null to indicate that
1471     * no callback is desired.
1472     *
1473     * @hide
1474     */
1475    public abstract void deleteApplicationCacheFiles(String packageName,
1476            IPackageDataObserver observer);
1477
1478    /**
1479     * Free storage by deleting LRU sorted list of cache files across
1480     * all applications. If the currently available free storage
1481     * on the device is greater than or equal to the requested
1482     * free storage, no cache files are cleared. If the currently
1483     * available storage on the device is less than the requested
1484     * free storage, some or all of the cache files across
1485     * all applications are deleted (based on last accessed time)
1486     * to increase the free storage space on the device to
1487     * the requested value. There is no guarantee that clearing all
1488     * the cache files from all applications will clear up
1489     * enough storage to achieve the desired value.
1490     * @param freeStorageSize The number of bytes of storage to be
1491     * freed by the system. Say if freeStorageSize is XX,
1492     * and the current free storage is YY,
1493     * if XX is less than YY, just return. if not free XX-YY number
1494     * of bytes if possible.
1495     * @param observer call back used to notify when
1496     * the operation is completed
1497     *
1498     * @hide
1499     */
1500    public abstract void freeStorageAndNotify(long freeStorageSize, IPackageDataObserver observer);
1501
1502    /**
1503     * Free storage by deleting LRU sorted list of cache files across
1504     * all applications. If the currently available free storage
1505     * on the device is greater than or equal to the requested
1506     * free storage, no cache files are cleared. If the currently
1507     * available storage on the device is less than the requested
1508     * free storage, some or all of the cache files across
1509     * all applications are deleted (based on last accessed time)
1510     * to increase the free storage space on the device to
1511     * the requested value. There is no guarantee that clearing all
1512     * the cache files from all applications will clear up
1513     * enough storage to achieve the desired value.
1514     * @param freeStorageSize The number of bytes of storage to be
1515     * freed by the system. Say if freeStorageSize is XX,
1516     * and the current free storage is YY,
1517     * if XX is less than YY, just return. if not free XX-YY number
1518     * of bytes if possible.
1519     * @param opFinishedIntent PendingIntent call back used to
1520     * notify when the operation is completed.May be null
1521     * to indicate that no call back is desired.
1522     *
1523     * @deprecated
1524     * @hide
1525     */
1526    @Deprecated
1527    public abstract void freeStorage(long freeStorageSize, PendingIntent opFinishedIntent);
1528
1529    /**
1530     * Free storage by deleting LRU sorted list of cache files across
1531     * all applications. If the currently available free storage
1532     * on the device is greater than or equal to the requested
1533     * free storage, no cache files are cleared. If the currently
1534     * available storage on the device is less than the requested
1535     * free storage, some or all of the cache files across
1536     * all applications are deleted (based on last accessed time)
1537     * to increase the free storage space on the device to
1538     * the requested value. There is no guarantee that clearing all
1539     * the cache files from all applications will clear up
1540     * enough storage to achieve the desired value.
1541     * @param freeStorageSize The number of bytes of storage to be
1542     * freed by the system. Say if freeStorageSize is XX,
1543     * and the current free storage is YY,
1544     * if XX is less than YY, just return. if not free XX-YY number
1545     * of bytes if possible.
1546     * @param pi IntentSender call back used to
1547     * notify when the operation is completed.May be null
1548     * to indicate that no call back is desired.
1549     *
1550     * @hide
1551     */
1552    public abstract void freeStorageWithIntent(long freeStorageSize, IntentSender pi);
1553
1554    /**
1555     * Retrieve the size information for a package.
1556     * Since this may take a little while, the result will
1557     * be posted back to the given observer.  The calling context
1558     * should have the {@link android.Manifest.permission#GET_PACKAGE_SIZE} permission.
1559     *
1560     * @param packageName The name of the package whose size information is to be retrieved
1561     * @param observer An observer callback to get notified when the operation
1562     * is complete.
1563     * {@link android.content.pm.IPackageStatsObserver#onGetStatsCompleted(PackageStats, boolean)}
1564     * The observer's callback is invoked with a PackageStats object(containing the
1565     * code, data and cache sizes of the package) and a boolean value representing
1566     * the status of the operation. observer may be null to indicate that
1567     * no callback is desired.
1568     *
1569     * @hide
1570     */
1571    public abstract void getPackageSizeInfo(String packageName,
1572            IPackageStatsObserver observer);
1573
1574    /**
1575     * Add a new package to the list of preferred packages.  This new package
1576     * will be added to the front of the list (removed from its current location
1577     * if already listed), meaning it will now be preferred over all other
1578     * packages when resolving conflicts.
1579     *
1580     * @param packageName The package name of the new package to make preferred.
1581     */
1582    public abstract void addPackageToPreferred(String packageName);
1583
1584    /**
1585     * Remove a package from the list of preferred packages.  If it was on
1586     * the list, it will no longer be preferred over other packages.
1587     *
1588     * @param packageName The package name to remove.
1589     */
1590    public abstract void removePackageFromPreferred(String packageName);
1591
1592    /**
1593     * Retrieve the list of all currently configured preferred packages.  The
1594     * first package on the list is the most preferred, the last is the
1595     * least preferred.
1596     *
1597     * @param flags Additional option flags. Use any combination of
1598     * {@link #GET_ACTIVITIES},
1599     * {@link #GET_GIDS},
1600     * {@link #GET_CONFIGURATIONS},
1601     * {@link #GET_INSTRUMENTATION},
1602     * {@link #GET_PERMISSIONS},
1603     * {@link #GET_PROVIDERS},
1604     * {@link #GET_RECEIVERS},
1605     * {@link #GET_SERVICES},
1606     * {@link #GET_SIGNATURES}, to modify the data returned.
1607     *
1608     * @return Returns a list of PackageInfo objects describing each
1609     * preferred application, in order of preference.
1610     *
1611     * @see #GET_ACTIVITIES
1612     * @see #GET_GIDS
1613     * @see #GET_CONFIGURATIONS
1614     * @see #GET_INSTRUMENTATION
1615     * @see #GET_PERMISSIONS
1616     * @see #GET_PROVIDERS
1617     * @see #GET_RECEIVERS
1618     * @see #GET_SERVICES
1619     * @see #GET_SIGNATURES
1620     */
1621    public abstract List<PackageInfo> getPreferredPackages(int flags);
1622
1623    /**
1624     * Add a new preferred activity mapping to the system.  This will be used
1625     * to automatically select the given activity component when
1626     * {@link Context#startActivity(Intent) Context.startActivity()} finds
1627     * multiple matching activities and also matches the given filter.
1628     *
1629     * @param filter The set of intents under which this activity will be
1630     * made preferred.
1631     * @param match The IntentFilter match category that this preference
1632     * applies to.
1633     * @param set The set of activities that the user was picking from when
1634     * this preference was made.
1635     * @param activity The component name of the activity that is to be
1636     * preferred.
1637     */
1638    public abstract void addPreferredActivity(IntentFilter filter, int match,
1639            ComponentName[] set, ComponentName activity);
1640
1641    /**
1642     * Replaces an existing preferred activity mapping to the system, and if that were not present
1643     * adds a new preferred activity.  This will be used
1644     * to automatically select the given activity component when
1645     * {@link Context#startActivity(Intent) Context.startActivity()} finds
1646     * multiple matching activities and also matches the given filter.
1647     *
1648     * @param filter The set of intents under which this activity will be
1649     * made preferred.
1650     * @param match The IntentFilter match category that this preference
1651     * applies to.
1652     * @param set The set of activities that the user was picking from when
1653     * this preference was made.
1654     * @param activity The component name of the activity that is to be
1655     * preferred.
1656     * @hide
1657     */
1658    public abstract void replacePreferredActivity(IntentFilter filter, int match,
1659            ComponentName[] set, ComponentName activity);
1660
1661    /**
1662     * Remove all preferred activity mappings, previously added with
1663     * {@link #addPreferredActivity}, from the
1664     * system whose activities are implemented in the given package name.
1665     *
1666     * @param packageName The name of the package whose preferred activity
1667     * mappings are to be removed.
1668     */
1669    public abstract void clearPackagePreferredActivities(String packageName);
1670
1671    /**
1672     * Retrieve all preferred activities, previously added with
1673     * {@link #addPreferredActivity}, that are
1674     * currently registered with the system.
1675     *
1676     * @param outFilters A list in which to place the filters of all of the
1677     * preferred activities, or null for none.
1678     * @param outActivities A list in which to place the component names of
1679     * all of the preferred activities, or null for none.
1680     * @param packageName An option package in which you would like to limit
1681     * the list.  If null, all activities will be returned; if non-null, only
1682     * those activities in the given package are returned.
1683     *
1684     * @return Returns the total number of registered preferred activities
1685     * (the number of distinct IntentFilter records, not the number of unique
1686     * activity components) that were found.
1687     */
1688    public abstract int getPreferredActivities(List<IntentFilter> outFilters,
1689            List<ComponentName> outActivities, String packageName);
1690
1691    /**
1692     * Set the enabled setting for a package component (activity, receiver, service, provider).
1693     * This setting will override any enabled state which may have been set by the component in its
1694     * manifest.
1695     *
1696     * @param componentName The component to enable
1697     * @param newState The new enabled state for the component.  The legal values for this state
1698     *                 are:
1699     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
1700     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
1701     *                   and
1702     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
1703     *                 The last one removes the setting, thereby restoring the component's state to
1704     *                 whatever was set in it's manifest (or enabled, by default).
1705     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
1706     */
1707    public abstract void setComponentEnabledSetting(ComponentName componentName,
1708            int newState, int flags);
1709
1710
1711    /**
1712     * Return the the enabled setting for a package component (activity,
1713     * receiver, service, provider).  This returns the last value set by
1714     * {@link #setComponentEnabledSetting(ComponentName, int, int)}; in most
1715     * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
1716     * the value originally specified in the manifest has not been modified.
1717     *
1718     * @param componentName The component to retrieve.
1719     * @return Returns the current enabled state for the component.  May
1720     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
1721     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
1722     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
1723     * component's enabled state is based on the original information in
1724     * the manifest as found in {@link ComponentInfo}.
1725     */
1726    public abstract int getComponentEnabledSetting(ComponentName componentName);
1727
1728    /**
1729     * Set the enabled setting for an application
1730     * This setting will override any enabled state which may have been set by the application in
1731     * its manifest.  It also overrides the enabled state set in the manifest for any of the
1732     * application's components.  It does not override any enabled state set by
1733     * {@link #setComponentEnabledSetting} for any of the application's components.
1734     *
1735     * @param packageName The package name of the application to enable
1736     * @param newState The new enabled state for the component.  The legal values for this state
1737     *                 are:
1738     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
1739     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
1740     *                   and
1741     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
1742     *                 The last one removes the setting, thereby restoring the applications's state to
1743     *                 whatever was set in its manifest (or enabled, by default).
1744     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
1745     */
1746    public abstract void setApplicationEnabledSetting(String packageName,
1747            int newState, int flags);
1748
1749    /**
1750     * Return the the enabled setting for an application.  This returns
1751     * the last value set by
1752     * {@link #setApplicationEnabledSetting(String, int, int)}; in most
1753     * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
1754     * the value originally specified in the manifest has not been modified.
1755     *
1756     * @param packageName The component to retrieve.
1757     * @return Returns the current enabled state for the component.  May
1758     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
1759     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
1760     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
1761     * application's enabled state is based on the original information in
1762     * the manifest as found in {@link ComponentInfo}.
1763     */
1764    public abstract int getApplicationEnabledSetting(String packageName);
1765
1766    /**
1767     * Return whether the device has been booted into safe mode.
1768     */
1769    public abstract boolean isSafeMode();
1770}
1771