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Android example source code file (PackageManager.java)

This example Android source code file (PackageManager.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

activityinfo, android, applicationinfo, charsequence, componentname, content, deprecated, drawable, file, intent, ipackagedataobserver, list, namenotfoundexception, os, packageinfo, resources, string, util, utilities, utils

The PackageManager.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.content.pm;

import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentSender;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Environment;
import android.os.StatFs;
import android.util.AndroidException;
import android.util.DisplayMetrics;

import java.io.File;
import java.util.List;

/**
 * Class for retrieving various kinds of information related to the application
 * packages that are currently installed on the device.
 *
 * You can find this class through {@link Context#getPackageManager}.
 */
public abstract class PackageManager {

    /**
     * This exception is thrown when a given package, application, or component
     * name can not be found.
     */
    public static class NameNotFoundException extends AndroidException {
        public NameNotFoundException() {
        }

        public NameNotFoundException(String name) {
            super(name);
        }
    }

    /**
     * {@link PackageInfo} flag: return information about
     * activities in the package in {@link PackageInfo#activities}.
     */
    public static final int GET_ACTIVITIES              = 0x00000001;

    /**
     * {@link PackageInfo} flag: return information about
     * intent receivers in the package in
     * {@link PackageInfo#receivers}.
     */
    public static final int GET_RECEIVERS               = 0x00000002;

    /**
     * {@link PackageInfo} flag: return information about
     * services in the package in {@link PackageInfo#services}.
     */
    public static final int GET_SERVICES                = 0x00000004;

    /**
     * {@link PackageInfo} flag: return information about
     * content providers in the package in
     * {@link PackageInfo#providers}.
     */
    public static final int GET_PROVIDERS               = 0x00000008;

    /**
     * {@link PackageInfo} flag: return information about
     * instrumentation in the package in
     * {@link PackageInfo#instrumentation}.
     */
    public static final int GET_INSTRUMENTATION         = 0x00000010;

    /**
     * {@link PackageInfo} flag: return information about the
     * intent filters supported by the activity.
     */
    public static final int GET_INTENT_FILTERS          = 0x00000020;

    /**
     * {@link PackageInfo} flag: return information about the
     * signatures included in the package.
     */
    public static final int GET_SIGNATURES          = 0x00000040;

    /**
     * {@link ResolveInfo} flag: return the IntentFilter that
     * was matched for a particular ResolveInfo in
     * {@link ResolveInfo#filter}.
     */
    public static final int GET_RESOLVED_FILTER         = 0x00000040;

    /**
     * {@link ComponentInfo} flag: return the {@link ComponentInfo#metaData}
     * data {@link android.os.Bundle}s that are associated with a component.
     * This applies for any API returning a ComponentInfo subclass.
     */
    public static final int GET_META_DATA               = 0x00000080;

    /**
     * {@link PackageInfo} flag: return the
     * {@link PackageInfo#gids group ids} that are associated with an
     * application.
     * This applies for any API returning an PackageInfo class, either
     * directly or nested inside of another.
     */
    public static final int GET_GIDS                    = 0x00000100;

    /**
     * {@link PackageInfo} flag: include disabled components in the returned info.
     */
    public static final int GET_DISABLED_COMPONENTS     = 0x00000200;

    /**
     * {@link ApplicationInfo} flag: return the
     * {@link ApplicationInfo#sharedLibraryFiles paths to the shared libraries}
     * that are associated with an application.
     * This applies for any API returning an ApplicationInfo class, either
     * directly or nested inside of another.
     */
    public static final int GET_SHARED_LIBRARY_FILES    = 0x00000400;

    /**
     * {@link ProviderInfo} flag: return the
     * {@link ProviderInfo#uriPermissionPatterns URI permission patterns}
     * that are associated with a content provider.
     * This applies for any API returning an ProviderInfo class, either
     * directly or nested inside of another.
     */
    public static final int GET_URI_PERMISSION_PATTERNS  = 0x00000800;
    /**
     * {@link PackageInfo} flag: return information about
     * permissions in the package in
     * {@link PackageInfo#permissions}.
     */
    public static final int GET_PERMISSIONS               = 0x00001000;
    
    /**
     * Flag parameter to retrieve all applications(even uninstalled ones) with data directories.
     * This state could have resulted if applications have been deleted with flag 
     * DONT_DELETE_DATA
     * with a possibility of being replaced or reinstalled in future
     */
    public static final int GET_UNINSTALLED_PACKAGES = 0x00002000;
    
    /**
     * {@link PackageInfo} flag: return information about
     * hardware preferences in
     * {@link PackageInfo#configPreferences PackageInfo.configPreferences} and
     * requested features in {@link PackageInfo#reqFeatures
     * PackageInfo.reqFeatures}. 
     */
    public static final int GET_CONFIGURATIONS = 0x00004000;

    /**
     * Resolution and querying flag: if set, only filters that support the
     * {@link android.content.Intent#CATEGORY_DEFAULT} will be considered for
     * matching.  This is a synonym for including the CATEGORY_DEFAULT in your
     * supplied Intent.
     */
    public static final int MATCH_DEFAULT_ONLY   = 0x00010000;

    /**
     * Permission check result: this is returned by {@link #checkPermission}
     * if the permission has been granted to the given package.
     */
    public static final int PERMISSION_GRANTED = 0;

    /**
     * Permission check result: this is returned by {@link #checkPermission}
     * if the permission has not been granted to the given package.
     */
    public static final int PERMISSION_DENIED = -1;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if the two packages have a matching signature.
     */
    public static final int SIGNATURE_MATCH = 0;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if neither of the two packages is signed.
     */
    public static final int SIGNATURE_NEITHER_SIGNED = 1;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if the first package is not signed, but the second is.
     */
    public static final int SIGNATURE_FIRST_NOT_SIGNED = -1;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if the second package is not signed, but the first is.
     */
    public static final int SIGNATURE_SECOND_NOT_SIGNED = -2;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if both packages are signed but there is no matching signature.
     */
    public static final int SIGNATURE_NO_MATCH = -3;

    /**
     * Signature check result: this is returned by {@link #checkSignatures}
     * if either of the given package names are not valid.
     */
    public static final int SIGNATURE_UNKNOWN_PACKAGE = -4;

    public static final int COMPONENT_ENABLED_STATE_DEFAULT = 0;
    public static final int COMPONENT_ENABLED_STATE_ENABLED = 1;
    public static final int COMPONENT_ENABLED_STATE_DISABLED = 2;

    /**
     * Flag parameter for {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} to
     * indicate that this package should be installed as forward locked, i.e. only the app itself
     * should have access to its code and non-resource assets.
     * @hide
     */
    public static final int INSTALL_FORWARD_LOCK = 0x00000001;

    /**
     * Flag parameter for {@link #installPackage} to indicate that you want to replace an already
     * installed package, if one exists.
     * @hide
     */
    public static final int INSTALL_REPLACE_EXISTING = 0x00000002;

    /**
     * Flag parameter for {@link #installPackage} to indicate that you want to 
     * allow test packages (those that have set android:testOnly in their
     * manifest) to be installed.
     * @hide
     */
    public static final int INSTALL_ALLOW_TEST = 0x00000004;

    /**
     * Flag parameter for {@link #installPackage} to indicate that this
     * package has to be installed on the sdcard.
     * @hide
     */
    public static final int INSTALL_EXTERNAL = 0x00000008;

    /**
    * Flag parameter for {@link #installPackage} to indicate that this
    * package has to be installed on the sdcard.
    * @hide
    */
   public static final int INSTALL_INTERNAL = 0x00000010;

    /**
     * Flag parameter for
     * {@link #setComponentEnabledSetting(android.content.ComponentName, int, int)} to indicate
     * that you don't want to kill the app containing the component.  Be careful when you set this
     * since changing component states can make the containing application's behavior unpredictable.
     */
    public static final int DONT_KILL_APP = 0x00000001;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} on success.
     * @hide
     */
    public static final int INSTALL_SUCCEEDED = 1;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package is
     * already installed.
     * @hide
     */
    public static final int INSTALL_FAILED_ALREADY_EXISTS = -1;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package archive
     * file is invalid.
     * @hide
     */
    public static final int INSTALL_FAILED_INVALID_APK = -2;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the URI passed in
     * is invalid.
     * @hide
     */
    public static final int INSTALL_FAILED_INVALID_URI = -3;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if the package manager
     * service found that the device didn't have enough storage space to install the app.
     * @hide
     */
    public static final int INSTALL_FAILED_INSUFFICIENT_STORAGE = -4;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if a
     * package is already installed with the same name.
     * @hide
     */
    public static final int INSTALL_FAILED_DUPLICATE_PACKAGE = -5;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the requested shared user does not exist.
     * @hide
     */
    public static final int INSTALL_FAILED_NO_SHARED_USER = -6;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * a previously installed package of the same name has a different signature
     * than the new package (and the old package's data was not removed).
     * @hide
     */
    public static final int INSTALL_FAILED_UPDATE_INCOMPATIBLE = -7;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package is requested a shared user which is already installed on the
     * device and does not have matching signature.
     * @hide
     */
    public static final int INSTALL_FAILED_SHARED_USER_INCOMPATIBLE = -8;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package uses a shared library that is not available.
     * @hide
     */
    public static final int INSTALL_FAILED_MISSING_SHARED_LIBRARY = -9;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package uses a shared library that is not available.
     * @hide
     */
    public static final int INSTALL_FAILED_REPLACE_COULDNT_DELETE = -10;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package failed while optimizing and validating its dex files,
     * either because there was not enough storage or the validation failed.
     * @hide
     */
    public static final int INSTALL_FAILED_DEXOPT = -11;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package failed because the current SDK version is older than
     * that required by the package.
     * @hide
     */
    public static final int INSTALL_FAILED_OLDER_SDK = -12;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package failed because it contains a content provider with the
     * same authority as a provider already installed in the system.
     * @hide
     */
    public static final int INSTALL_FAILED_CONFLICTING_PROVIDER = -13;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package failed because the current SDK version is newer than
     * that required by the package.
     * @hide
     */
    public static final int INSTALL_FAILED_NEWER_SDK = -14;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package failed because it has specified that it is a test-only
     * package and the caller has not supplied the {@link #INSTALL_ALLOW_TEST}
     * flag.
     * @hide
     */
    public static final int INSTALL_FAILED_TEST_ONLY = -15;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the package being installed contains native code, but none that is
     * compatible with the the device's CPU_ABI.
     * @hide
     */
    public static final int INSTALL_FAILED_CPU_ABI_INCOMPATIBLE = -16;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package uses a feature that is not available.
     * @hide
     */
    public static final int INSTALL_FAILED_MISSING_FEATURE = -17;

    // ------ Errors related to sdcard
    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * a secure container mount point couldn't be accessed on external media.
     * @hide
     */
    public static final int INSTALL_FAILED_CONTAINER_ERROR = -18;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package couldn't be installed in the specified install
     * location.
     * @hide
     */
    public static final int INSTALL_FAILED_INVALID_INSTALL_LOCATION = -19;

    /**
     * Installation return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
     * the new package couldn't be installed in the specified install
     * location because the media is not available.
     * @hide
     */
    public static final int INSTALL_FAILED_MEDIA_UNAVAILABLE = -20;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser was given a path that is not a file, or does not end with the expected
     * '.apk' extension.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_NOT_APK = -100;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser was unable to retrieve the AndroidManifest.xml file.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_BAD_MANIFEST = -101;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser encountered an unexpected exception.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION = -102;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser did not find any certificates in the .apk.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_NO_CERTIFICATES = -103;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser found inconsistent certificates on the files in the .apk.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES = -104;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser encountered a CertificateEncodingException in one of the
     * files in the .apk.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING = -105;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser encountered a bad or missing package name in the manifest.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME = -106;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser encountered a bad shared user id name in the manifest.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID = -107;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser encountered some structural problem in the manifest.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_MANIFEST_MALFORMED = -108;

    /**
     * Installation parse return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the parser did not find any actionable tags (instrumentation or application)
     * in the manifest.
     * @hide
     */
    public static final int INSTALL_PARSE_FAILED_MANIFEST_EMPTY = -109;

    /**
     * Installation failed return code: this is passed to the {@link IPackageInstallObserver} by
     * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)}
     * if the system failed to install the package because of system issues.
     * @hide
     */
    public static final int INSTALL_FAILED_INTERNAL_ERROR = -110;

    /**
     * Flag parameter for {@link #deletePackage} to indicate that you don't want to delete the
     * package's data directory.
     *
     * @hide
     */
    public static final int DONT_DELETE_DATA = 0x00000001;

    /**
     * Return code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * when the package has been successfully moved by the system.
     * @hide
     */
    public static final int MOVE_SUCCEEDED = 1;
    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * when the package hasn't been successfully moved by the system
     * because of insufficient memory on specified media.
     * @hide
     */
    public static final int MOVE_FAILED_INSUFFICIENT_STORAGE = -1;

    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * if the specified package doesn't exist.
     * @hide
     */
    public static final int MOVE_FAILED_DOESNT_EXIST = -2;

    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * if the specified package cannot be moved since its a system package.
     * @hide
     */
    public static final int MOVE_FAILED_SYSTEM_PACKAGE = -3;

    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * if the specified package cannot be moved since its forward locked.
     * @hide
     */
    public static final int MOVE_FAILED_FORWARD_LOCKED = -4;

    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * if the specified package cannot be moved to the specified location.
     * @hide
     */
    public static final int MOVE_FAILED_INVALID_LOCATION = -5;

    /**
     * Error code that is passed to the {@link IPackageMoveObserver} by
     * {@link #movePackage(android.net.Uri, IPackageMoveObserver)}
     * if the specified package cannot be moved to the specified location.
     * @hide
     */
    public static final int MOVE_FAILED_INTERNAL_ERROR = -6;

    /**
     * Flag parameter for {@link #movePackage} to indicate that
     * the package should be moved to internal storage if its
     * been installed on external media.
     * @hide
     */
    public static final int MOVE_INTERNAL = 0x00000001;

    /**
     * Flag parameter for {@link #movePackage} to indicate that
     * the package should be moved to external media.
     * @hide
     */
    public static final int MOVE_EXTERNAL_MEDIA = 0x00000002;

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device is capable of communicating with
     * other devices via Bluetooth.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_BLUETOOTH = "android.hardware.bluetooth";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device has a camera facing away
     * from the screen.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_CAMERA = "android.hardware.camera";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device's camera supports auto-focus.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_CAMERA_AUTOFOCUS = "android.hardware.camera.autofocus";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device's camera supports flash.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_CAMERA_FLASH = "android.hardware.camera.flash";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device supports one or more methods of
     * reporting current location.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_LOCATION = "android.hardware.location";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device has a Global Positioning System
     * receiver and can report precise location.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_LOCATION_GPS = "android.hardware.location.gps";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device can report location with coarse
     * accuracy using a network-based geolocation system.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_LOCATION_NETWORK = "android.hardware.location.network";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device can record audio via a
     * microphone.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_MICROPHONE = "android.hardware.microphone";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device includes a magnetometer (compass).
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_SENSOR_COMPASS = "android.hardware.sensor.compass";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device includes an accelerometer.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_SENSOR_ACCELEROMETER = "android.hardware.sensor.accelerometer";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device includes a light sensor.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_SENSOR_LIGHT = "android.hardware.sensor.light";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device includes a proximity sensor.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_SENSOR_PROXIMITY = "android.hardware.sensor.proximity";
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device has a telephony radio with data
     * communication support.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TELEPHONY = "android.hardware.telephony";
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device has a CDMA telephony stack.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TELEPHONY_CDMA = "android.hardware.telephony.cdma";
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device has a GSM telephony stack.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TELEPHONY_GSM = "android.hardware.telephony.gsm";
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device's display has a touch screen.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TOUCHSCREEN = "android.hardware.touchscreen";
    
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device's touch screen supports
     * multitouch sufficient for basic two-finger gesture detection.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TOUCHSCREEN_MULTITOUCH = "android.hardware.touchscreen.multitouch";
    
    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device's touch screen is capable of
     * tracking two or more fingers fully independently.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT = "android.hardware.touchscreen.multitouch.distinct";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device supports live wallpapers.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_LIVE_WALLPAPER = "android.software.live_wallpaper";

    /**
     * Feature for {@link #getSystemAvailableFeatures} and
     * {@link #hasSystemFeature}: The device supports WiFi (802.11) networking.
     */
    @SdkConstant(SdkConstantType.FEATURE)
    public static final String FEATURE_WIFI = "android.hardware.wifi";

    /**
     * Action to external storage service to clean out removed apps.
     * @hide
     */
    public static final String ACTION_CLEAN_EXTERNAL_STORAGE
            = "android.content.pm.CLEAN_EXTERNAL_STORAGE";

    /**
     * Retrieve overall information about an application package that is
     * installed on the system.
     *
     * <p>Throws {@link NameNotFoundException} if a package with the given
     * name can not be found on the system.
     *
     * @param packageName The full name (i.e. com.google.apps.contacts) of the
     *                    desired package.

     * @param flags Additional option flags. Use any combination of
     * {@link #GET_ACTIVITIES},
     * {@link #GET_GIDS},
     * {@link #GET_CONFIGURATIONS},
     * {@link #GET_INSTRUMENTATION},
     * {@link #GET_PERMISSIONS},
     * {@link #GET_PROVIDERS},
     * {@link #GET_RECEIVERS},
     * {@link #GET_SERVICES},
     * {@link #GET_SIGNATURES},
     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
     *
     * @return Returns a PackageInfo object containing information about the package.
     *         If flag GET_UNINSTALLED_PACKAGES is set and  if the package is not
     *         found in the list of installed applications, the package information is
     *         retrieved from the list of uninstalled applications(which includes 
     *         installed applications as well as applications
     *         with data directory ie applications which had been
     *         deleted with DONT_DELTE_DATA flag set).
     *         
     * @see #GET_ACTIVITIES
     * @see #GET_GIDS
     * @see #GET_CONFIGURATIONS
     * @see #GET_INSTRUMENTATION
     * @see #GET_PERMISSIONS
     * @see #GET_PROVIDERS
     * @see #GET_RECEIVERS
     * @see #GET_SERVICES
     * @see #GET_SIGNATURES
     * @see #GET_UNINSTALLED_PACKAGES
     *                  
     */
    public abstract PackageInfo getPackageInfo(String packageName, int flags)
            throws NameNotFoundException;

    /**
     * Map from the current package names in use on the device to whatever
     * the current canonical name of that package is.
     * @param names Array of current names to be mapped.
     * @return Returns an array of the same size as the original, containing
     * the canonical name for each package.
     */
    public abstract String[] currentToCanonicalPackageNames(String[] names);
    
    /**
     * Map from a packages canonical name to the current name in use on the device.
     * @param names Array of new names to be mapped.
     * @return Returns an array of the same size as the original, containing
     * the current name for each package.
     */
    public abstract String[] canonicalToCurrentPackageNames(String[] names);
    
    /**
     * Return a "good" intent to launch a front-door activity in a package,
     * for use for example to implement an "open" button when browsing through
     * packages.  The current implementation will look first for a main
     * activity in the category {@link Intent#CATEGORY_INFO}, next for a
     * main activity in the category {@link Intent#CATEGORY_LAUNCHER}, or return
     * null if neither are found.
     * 
     * <p>Throws {@link NameNotFoundException} if a package with the given
     * name can not be found on the system.
     *
     * @param packageName The name of the package to inspect.
     * 
     * @return Returns either a fully-qualified Intent that can be used to
     * launch the main activity in the package, or null if the package does
     * not contain such an activity.
     */
    public abstract Intent getLaunchIntentForPackage(String packageName);

    /**
     * Return an array of all of the secondary group-ids that have been
     * assigned to a package.
     *
     * <p>Throws {@link NameNotFoundException} if a package with the given
     * name can not be found on the system.
     *
     * @param packageName The full name (i.e. com.google.apps.contacts) of the
     *                    desired package.
     *
     * @return Returns an int array of the assigned gids, or null if there
     * are none.
     */
    public abstract int[] getPackageGids(String packageName)
            throws NameNotFoundException;

    /**
     * Retrieve all of the information we know about a particular permission.
     *
     * <p>Throws {@link NameNotFoundException} if a permission with the given
     * name can not be found on the system.
     *
     * @param name The fully qualified name (i.e. com.google.permission.LOGIN)
     *             of the permission you are interested in.
     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
     * retrieve any meta-data associated with the permission.
     *
     * @return Returns a {@link PermissionInfo} containing information about the
     *         permission.
     */
    public abstract PermissionInfo getPermissionInfo(String name, int flags)
            throws NameNotFoundException;

    /**
     * Query for all of the permissions associated with a particular group.
     *
     * <p>Throws {@link NameNotFoundException} if the given group does not
     * exist.
     *
     * @param group The fully qualified name (i.e. com.google.permission.LOGIN)
     *             of the permission group you are interested in.  Use null to
     *             find all of the permissions not associated with a group.
     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
     * retrieve any meta-data associated with the permissions.
     *
     * @return Returns a list of {@link PermissionInfo} containing information
     * about all of the permissions in the given group.
     */
    public abstract List<PermissionInfo> queryPermissionsByGroup(String group,
            int flags) throws NameNotFoundException;

    /**
     * Retrieve all of the information we know about a particular group of
     * permissions.
     *
     * <p>Throws {@link NameNotFoundException} if a permission group with the given
     * name can not be found on the system.
     *
     * @param name The fully qualified name (i.e. com.google.permission_group.APPS)
     *             of the permission you are interested in.
     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
     * retrieve any meta-data associated with the permission group.
     *
     * @return Returns a {@link PermissionGroupInfo} containing information
     * about the permission.
     */
    public abstract PermissionGroupInfo getPermissionGroupInfo(String name,
            int flags) throws NameNotFoundException;

    /**
     * Retrieve all of the known permission groups in the system.
     *
     * @param flags Additional option flags.  Use {@link #GET_META_DATA} to
     * retrieve any meta-data associated with the permission group.
     *
     * @return Returns a list of {@link PermissionGroupInfo} containing
     * information about all of the known permission groups.
     */
    public abstract List<PermissionGroupInfo> getAllPermissionGroups(int flags);

    /**
     * Retrieve all of the information we know about a particular
     * package/application.
     *
     * <p>Throws {@link NameNotFoundException} if an application with the given
     * package name can not be found on the system.
     *
     * @param packageName The full name (i.e. com.google.apps.contacts) of an
     *                    application.
     * @param flags Additional option flags. Use any combination of 
     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
     *
     * @return  {@link ApplicationInfo} Returns ApplicationInfo object containing 
     *         information about the package.
     *         If flag GET_UNINSTALLED_PACKAGES is set and  if the package is not
     *         found in the list of installed applications, 
     *         the application information is retrieved from the 
     *         list of uninstalled applications(which includes 
     *         installed applications as well as applications
     *         with data directory ie applications which had been
     *         deleted with DONT_DELTE_DATA flag set).
     *
     * @see #GET_META_DATA
     * @see #GET_SHARED_LIBRARY_FILES
     * @see #GET_UNINSTALLED_PACKAGES
     */
    public abstract ApplicationInfo getApplicationInfo(String packageName,
            int flags) throws NameNotFoundException;

    /**
     * Retrieve all of the information we know about a particular activity
     * class.
     *
     * <p>Throws {@link NameNotFoundException} if an activity with the given
     * class name can not be found on the system.
     *
     * @param className The full name (i.e.
     *                  com.google.apps.contacts.ContactsList) of an Activity
     *                  class.
     * @param flags Additional option flags. Use any combination of 
     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
     * to modify the data (in ApplicationInfo) returned.
     *
     * @return {@link ActivityInfo} containing information about the activity.
     *
     * @see #GET_INTENT_FILTERS
     * @see #GET_META_DATA
     * @see #GET_SHARED_LIBRARY_FILES
     */
    public abstract ActivityInfo getActivityInfo(ComponentName className,
            int flags) throws NameNotFoundException;

    /**
     * Retrieve all of the information we know about a particular receiver
     * class.
     *
     * <p>Throws {@link NameNotFoundException} if a receiver with the given
     * class name can not be found on the system.
     *
     * @param className The full name (i.e.
     *                  com.google.apps.contacts.CalendarAlarm) of a Receiver
     *                  class.
     * @param flags Additional option flags.  Use any combination of 
     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
     * to modify the data returned.
     *
     * @return {@link ActivityInfo} containing information about the receiver.
     *
     * @see #GET_INTENT_FILTERS
     * @see #GET_META_DATA
     * @see #GET_SHARED_LIBRARY_FILES
     */
    public abstract ActivityInfo getReceiverInfo(ComponentName className,
            int flags) throws NameNotFoundException;

    /**
     * Retrieve all of the information we know about a particular service
     * class.
     *
     * <p>Throws {@link NameNotFoundException} if a service with the given
     * class name can not be found on the system.
     *
     * @param className The full name (i.e.
     *                  com.google.apps.media.BackgroundPlayback) of a Service
     *                  class.
     * @param flags Additional option flags.  Use any combination of 
     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
     * to modify the data returned.
     *
     * @return ServiceInfo containing information about the service.
     * 
     * @see #GET_META_DATA
     * @see #GET_SHARED_LIBRARY_FILES
     */
    public abstract ServiceInfo getServiceInfo(ComponentName className,
            int flags) throws NameNotFoundException;

    /**
     * Return a List of all packages that are installed
     * on the device.
     *
     * @param flags Additional option flags. Use any combination of
     * {@link #GET_ACTIVITIES},
     * {@link #GET_GIDS},
     * {@link #GET_CONFIGURATIONS},
     * {@link #GET_INSTRUMENTATION},
     * {@link #GET_PERMISSIONS},
     * {@link #GET_PROVIDERS},
     * {@link #GET_RECEIVERS},
     * {@link #GET_SERVICES},
     * {@link #GET_SIGNATURES},
     * {@link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
     *
     * @return A List of PackageInfo objects, one for each package that is
     *         installed on the device.  In the unlikely case of there being no
     *         installed packages, an empty list is returned. 
     *         If flag GET_UNINSTALLED_PACKAGES is set, a list of all
     *         applications including those deleted with DONT_DELETE_DATA
     *         (partially installed apps with data directory) will be returned.
     *
     * @see #GET_ACTIVITIES
     * @see #GET_GIDS
     * @see #GET_CONFIGURATIONS
     * @see #GET_INSTRUMENTATION
     * @see #GET_PERMISSIONS
     * @see #GET_PROVIDERS
     * @see #GET_RECEIVERS
     * @see #GET_SERVICES
     * @see #GET_SIGNATURES
     * @see #GET_UNINSTALLED_PACKAGES
     * 
     */
    public abstract List<PackageInfo> getInstalledPackages(int flags);

    /**
     * Check whether a particular package has been granted a particular
     * permission.
     *
     * @param permName The name of the permission you are checking for,
     * @param pkgName The name of the package you are checking against.
     *
     * @return If the package has the permission, PERMISSION_GRANTED is
     * returned.  If it does not have the permission, PERMISSION_DENIED
     * is returned.
     *
     * @see #PERMISSION_GRANTED
     * @see #PERMISSION_DENIED
     */
    public abstract int checkPermission(String permName, String pkgName);

    /**
     * Add a new dynamic permission to the system.  For this to work, your
     * package must have defined a permission tree through the
     * {@link android.R.styleable#AndroidManifestPermissionTree
     * <permission-tree>} tag in its manifest.  A package can only add
     * permissions to trees that were defined by either its own package or
     * another with the same user id; a permission is in a tree if it
     * matches the name of the permission tree + ".": for example,
     * "com.foo.bar" is a member of the permission tree "com.foo".
     *
     * <p>It is good to make your permission tree name descriptive, because you
     * are taking possession of that entire set of permission names.  Thus, it
     * must be under a domain you control, with a suffix that will not match
     * any normal permissions that may be declared in any applications that
     * are part of that domain.
     *
     * <p>New permissions must be added before
     * any .apks are installed that use those permissions.  Permissions you
     * add through this method are remembered across reboots of the device.
     * If the given permission already exists, the info you supply here
     * will be used to update it.
     *
     * @param info Description of the permission to be added.
     *
     * @return Returns true if a new permission was created, false if an
     * existing one was updated.
     *
     * @throws SecurityException if you are not allowed to add the
     * given permission name.
     *
     * @see #removePermission(String)
     */
    public abstract boolean addPermission(PermissionInfo info);

    /**
     * Like {@link #addPermission(PermissionInfo)} but asynchronously
     * persists the package manager state after returning from the call,
     * allowing it to return quicker and batch a series of adds at the
     * expense of no guarantee the added permission will be retained if
     * the device is rebooted before it is written.
     */
    public abstract boolean addPermissionAsync(PermissionInfo info);
    
    /**
     * Removes a permission that was previously added with
     * {@link #addPermission(PermissionInfo)}.  The same ownership rules apply
     * -- you are only allowed to remove permissions that you are allowed
     * to add.
     *
     * @param name The name of the permission to remove.
     *
     * @throws SecurityException if you are not allowed to remove the
     * given permission name.
     *
     * @see #addPermission(PermissionInfo)
     */
    public abstract void removePermission(String name);

    /**
     * Compare the signatures of two packages to determine if the same
     * signature appears in both of them.  If they do contain the same
     * signature, then they are allowed special privileges when working
     * with each other: they can share the same user-id, run instrumentation
     * against each other, etc.
     *
     * @param pkg1 First package name whose signature will be compared.
     * @param pkg2 Second package name whose signature will be compared.
     * @return Returns an integer indicating whether there is a matching
     * signature: the value is >= 0 if there is a match (or neither package
     * is signed), or < 0 if there is not a match.  The match result can be
     * further distinguished with the success (>= 0) constants
     * {@link #SIGNATURE_MATCH}, {@link #SIGNATURE_NEITHER_SIGNED}; or
     * failure (< 0) constants {@link #SIGNATURE_FIRST_NOT_SIGNED},
     * {@link #SIGNATURE_SECOND_NOT_SIGNED}, {@link #SIGNATURE_NO_MATCH},
     * or {@link #SIGNATURE_UNKNOWN_PACKAGE}.
     *
     * @see #checkSignatures(int, int)
     * @see #SIGNATURE_MATCH
     * @see #SIGNATURE_NEITHER_SIGNED
     * @see #SIGNATURE_FIRST_NOT_SIGNED
     * @see #SIGNATURE_SECOND_NOT_SIGNED
     * @see #SIGNATURE_NO_MATCH
     * @see #SIGNATURE_UNKNOWN_PACKAGE
     */
    public abstract int checkSignatures(String pkg1, String pkg2);

    /**
     * Like {@link #checkSignatures(String, String)}, but takes UIDs of
     * the two packages to be checked.  This can be useful, for example,
     * when doing the check in an IPC, where the UID is the only identity
     * available.  It is functionally identical to determining the package
     * associated with the UIDs and checking their signatures.
     *
     * @param uid1 First UID whose signature will be compared.
     * @param uid2 Second UID whose signature will be compared.
     * @return Returns an integer indicating whether there is a matching
     * signature: the value is >= 0 if there is a match (or neither package
     * is signed), or < 0 if there is not a match.  The match result can be
     * further distinguished with the success (>= 0) constants
     * {@link #SIGNATURE_MATCH}, {@link #SIGNATURE_NEITHER_SIGNED}; or
     * failure (< 0) constants {@link #SIGNATURE_FIRST_NOT_SIGNED},
     * {@link #SIGNATURE_SECOND_NOT_SIGNED}, {@link #SIGNATURE_NO_MATCH},
     * or {@link #SIGNATURE_UNKNOWN_PACKAGE}.
     *
     * @see #checkSignatures(int, int)
     * @see #SIGNATURE_MATCH
     * @see #SIGNATURE_NEITHER_SIGNED
     * @see #SIGNATURE_FIRST_NOT_SIGNED
     * @see #SIGNATURE_SECOND_NOT_SIGNED
     * @see #SIGNATURE_NO_MATCH
     * @see #SIGNATURE_UNKNOWN_PACKAGE
     */
    public abstract int checkSignatures(int uid1, int uid2);

    /**
     * Retrieve the names of all packages that are associated with a particular
     * user id.  In most cases, this will be a single package name, the package
     * that has been assigned that user id.  Where there are multiple packages
     * sharing the same user id through the "sharedUserId" mechanism, all
     * packages with that id will be returned.
     *
     * @param uid The user id for which you would like to retrieve the
     * associated packages.
     *
     * @return Returns an array of one or more packages assigned to the user
     * id, or null if there are no known packages with the given id.
     */
    public abstract String[] getPackagesForUid(int uid);

    /**
     * Retrieve the official name associated with a user id.  This name is
     * guaranteed to never change, though it is possibly for the underlying
     * user id to be changed.  That is, if you are storing information about
     * user ids in persistent storage, you should use the string returned
     * by this function instead of the raw user-id.
     *
     * @param uid The user id for which you would like to retrieve a name.
     * @return Returns a unique name for the given user id, or null if the
     * user id is not currently assigned.
     */
    public abstract String getNameForUid(int uid);
    
    /**
     * Return the user id associated with a shared user name. Multiple
     * applications can specify a shared user name in their manifest and thus
     * end up using a common uid. This might be used for new applications
     * that use an existing shared user name and need to know the uid of the
     * shared user.
     *
     * @param sharedUserName The shared user name whose uid is to be retrieved.
     * @return Returns the uid associated with the shared user, or  NameNotFoundException
     * if the shared user name is not being used by any installed packages
     * @hide
     */
    public abstract int getUidForSharedUser(String sharedUserName)
            throws NameNotFoundException;

    /**
     * Return a List of all application packages that are installed on the
     * device. If flag GET_UNINSTALLED_PACKAGES has been set, a list of all
     * applications including those deleted with DONT_DELETE_DATA(partially
     * installed apps with data directory) will be returned.
     * 
     * @param flags Additional option flags. Use any combination of 
     * {@link #GET_META_DATA}, {@link #GET_SHARED_LIBRARY_FILES},
     * {link #GET_UNINSTALLED_PACKAGES} to modify the data returned.
     *
     * @return A List of ApplicationInfo objects, one for each application that
     *         is installed on the device.  In the unlikely case of there being
     *         no installed applications, an empty list is returned. 
     *         If flag GET_UNINSTALLED_PACKAGES is set, a list of all
     *         applications including those deleted with DONT_DELETE_DATA
     *         (partially installed apps with data directory) will be returned.
     *         
     * @see #GET_META_DATA
     * @see #GET_SHARED_LIBRARY_FILES
     * @see #GET_UNINSTALLED_PACKAGES
     */
    public abstract List<ApplicationInfo> getInstalledApplications(int flags);
    
    /**
     * Get a list of shared libraries that are available on the
     * system.
     * 
     * @return An array of shared library names that are
     * available on the system, or null if none are installed.
     * 
     */
    public abstract String[] getSystemSharedLibraryNames();

    /**
     * Get a list of features that are available on the
     * system.
     * 
     * @return An array of FeatureInfo classes describing the features
     * that are available on the system, or null if there are none(!!).
     */
    public abstract FeatureInfo[] getSystemAvailableFeatures();

    /**
     * Check whether the given feature name is one of the available
     * features as returned by {@link #getSystemAvailableFeatures()}.
     * 
     * @return Returns true if the devices supports the feature, else
     * false.
     */
    public abstract boolean hasSystemFeature(String name);

    /**
     * Determine the best action to perform for a given Intent.  This is how
     * {@link Intent#resolveActivity} finds an activity if a class has not
     * been explicitly specified.
     *
     * @param intent An intent containing all of the desired specification
     *               (action, data, type, category, and/or component).
     * @param flags Additional option flags.  The most important is
     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
     *                    those activities that support the CATEGORY_DEFAULT.
     *
     * @return Returns a ResolveInfo containing the final activity intent that
     *         was determined to be the best action.  Returns null if no
     *         matching activity was found. If multiple matching activities are
     *         found and there is no default set, returns a ResolveInfo
     *         containing something else, such as the activity resolver.
     *
     * @see #MATCH_DEFAULT_ONLY
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract ResolveInfo resolveActivity(Intent intent, int flags);

    /**
     * Retrieve all activities that can be performed for the given intent.
     *
     * @param intent The desired intent as per resolveActivity().
     * @param flags Additional option flags.  The most important is
     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
     *                    those activities that support the CATEGORY_DEFAULT.
     *
     * @return A List<ResolveInfo> containing one entry for each matching
     *         Activity. These are ordered from best to worst match -- that
     *         is, the first item in the list is what is returned by
     *         resolveActivity().  If there are no matching activities, an empty
     *         list is returned.
     *
     * @see #MATCH_DEFAULT_ONLY
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract List<ResolveInfo> queryIntentActivities(Intent intent,
            int flags);

    /**
     * Retrieve a set of activities that should be presented to the user as
     * similar options.  This is like {@link #queryIntentActivities}, except it
     * also allows you to supply a list of more explicit Intents that you would
     * like to resolve to particular options, and takes care of returning the
     * final ResolveInfo list in a reasonable order, with no duplicates, based
     * on those inputs.
     *
     * @param caller The class name of the activity that is making the
     *               request.  This activity will never appear in the output
     *               list.  Can be null.
     * @param specifics An array of Intents that should be resolved to the
     *                  first specific results.  Can be null.
     * @param intent The desired intent as per resolveActivity().
     * @param flags Additional option flags.  The most important is
     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
     *                    those activities that support the CATEGORY_DEFAULT.
     *
     * @return A List<ResolveInfo> containing one entry for each matching
     *         Activity. These are ordered first by all of the intents resolved
     *         in <var>specifics and then any additional activities that
     *         can handle <var>intent but did not get included by one of
     *         the <var>specifics intents.  If there are no matching
     *         activities, an empty list is returned.
     *
     * @see #MATCH_DEFAULT_ONLY
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract List<ResolveInfo> queryIntentActivityOptions(
            ComponentName caller, Intent[] specifics, Intent intent, int flags);

    /**
     * Retrieve all receivers that can handle a broadcast of the given intent.
     *
     * @param intent The desired intent as per resolveActivity().
     * @param flags Additional option flags.  The most important is
     *                    MATCH_DEFAULT_ONLY, to limit the resolution to only
     *                    those activities that support the CATEGORY_DEFAULT.
     *
     * @return A List<ResolveInfo> containing one entry for each matching
     *         Receiver. These are ordered from first to last in priority.  If
     *         there are no matching receivers, an empty list is returned.
     *
     * @see #MATCH_DEFAULT_ONLY
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract List<ResolveInfo> queryBroadcastReceivers(Intent intent,
            int flags);

    /**
     * Determine the best service to handle for a given Intent.
     *
     * @param intent An intent containing all of the desired specification
     *               (action, data, type, category, and/or component).
     * @param flags Additional option flags.
     *
     * @return Returns a ResolveInfo containing the final service intent that
     *         was determined to be the best action.  Returns null if no
     *         matching service was found.
     *
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract ResolveInfo resolveService(Intent intent, int flags);

    /**
     * Retrieve all services that can match the given intent.
     *
     * @param intent The desired intent as per resolveService().
     * @param flags Additional option flags.
     *
     * @return A List<ResolveInfo> containing one entry for each matching
     *         ServiceInfo. These are ordered from best to worst match -- that
     *         is, the first item in the list is what is returned by
     *         resolveService().  If there are no matching services, an empty
     *         list is returned.
     *
     * @see #GET_INTENT_FILTERS
     * @see #GET_RESOLVED_FILTER
     */
    public abstract List<ResolveInfo> queryIntentServices(Intent intent,
            int flags);

    /**
     * Find a single content provider by its base path name.
     *
     * @param name The name of the provider to find.
     * @param flags Additional option flags.  Currently should always be 0.
     *
     * @return ContentProviderInfo Information about the provider, if found,
     *         else null.
     */
    public abstract ProviderInfo resolveContentProvider(String name,
            int flags);

    /**
     * Retrieve content provider information.
     *
     * <p>Note: unlike most other methods, an empty result set is indicated
     * by a null return instead of an empty list.</em>
     *
     * @param processName If non-null, limits the returned providers to only
     *                    those that are hosted by the given process.  If null,
     *                    all content providers are returned.
     * @param uid If <var>processName is non-null, this is the required
     *        uid owning the requested content providers.
     * @param flags Additional option flags.  Currently should always be 0.
     *
     * @return A List<ContentProviderInfo> containing one entry for each
     *         content provider either patching <var>processName or, if
     *         <var>processName is null, all known content providers.
     *         <em>If there are no matching providers, null is returned.
     */
    public abstract List<ProviderInfo> queryContentProviders(
            String processName, int uid, int flags);

    /**
     * Retrieve all of the information we know about a particular
     * instrumentation class.
     *
     * <p>Throws {@link NameNotFoundException} if instrumentation with the
     * given class name can not be found on the system.
     *
     * @param className The full name (i.e.
     *                  com.google.apps.contacts.InstrumentList) of an
     *                  Instrumentation class.
     * @param flags Additional option flags.  Currently should always be 0.
     *
     * @return InstrumentationInfo containing information about the
     *         instrumentation.
     */
    public abstract InstrumentationInfo getInstrumentationInfo(
            ComponentName className, int flags) throws NameNotFoundException;

    /**
     * Retrieve information about available instrumentation code.  May be used
     * to retrieve either all instrumentation code, or only the code targeting
     * a particular package.
     *
     * @param targetPackage If null, all instrumentation is returned; only the
     *                      instrumentation targeting this package name is
     *                      returned.
     * @param flags Additional option flags.  Currently should always be 0.
     *
     * @return A List<InstrumentationInfo> containing one entry for each
     *         matching available Instrumentation.  Returns an empty list if
     *         there is no instrumentation available for the given package.
     */
    public abstract List<InstrumentationInfo> queryInstrumentation(
            String targetPackage, int flags);

    /**
     * Retrieve an image from a package.  This is a low-level API used by
     * the various package manager info structures (such as
     * {@link ComponentInfo} to implement retrieval of their associated
     * icon.
     *
     * @param packageName The name of the package that this icon is coming from.
     * Can not be null.
     * @param resid The resource identifier of the desired image.  Can not be 0.
     * @param appInfo Overall information about <var>packageName.  This
     * may be null, in which case the application information will be retrieved
     * for you if needed; if you already have this information around, it can
     * be much more efficient to supply it here.
     *
     * @return Returns a Drawable holding the requested image.  Returns null if
     * an image could not be found for any reason.
     */
    public abstract Drawable getDrawable(String packageName, int resid,
            ApplicationInfo appInfo);

    /**
     * Retrieve the icon associated with an activity.  Given the full name of
     * an activity, retrieves the information about it and calls
     * {@link ComponentInfo#loadIcon ComponentInfo.loadIcon()} to return its icon.
     * If the activity can not be found, NameNotFoundException is thrown.
     *
     * @param activityName Name of the activity whose icon is to be retrieved.
     *
     * @return Returns the image of the icon, or the default activity icon if
     * it could not be found.  Does not return null.
     * @throws NameNotFoundException Thrown if the resources for the given
     * activity could not be loaded.
     *
     * @see #getActivityIcon(Intent)
     */
    public abstract Drawable getActivityIcon(ComponentName activityName)
            throws NameNotFoundException;

    /**
     * Retrieve the icon associated with an Intent.  If intent.getClassName() is
     * set, this simply returns the result of
     * getActivityIcon(intent.getClassName()).  Otherwise it resolves the intent's
     * component and returns the icon associated with the resolved component.
     * If intent.getClassName() can not be found or the Intent can not be resolved
     * to a component, NameNotFoundException is thrown.
     *
     * @param intent The intent for which you would like to retrieve an icon.
     *
     * @return Returns the image of the icon, or the default activity icon if
     * it could not be found.  Does not return null.
     * @throws NameNotFoundException Thrown if the resources for application
     * matching the given intent could not be loaded.
     *
     * @see #getActivityIcon(ComponentName)
     */
    public abstract Drawable getActivityIcon(Intent intent)
            throws NameNotFoundException;

    /**
     * Return the generic icon for an activity that is used when no specific
     * icon is defined.
     *
     * @return Drawable Image of the icon.
     */
    public abstract Drawable getDefaultActivityIcon();

    /**
     * Retrieve the icon associated with an application.  If it has not defined
     * an icon, the default app icon is returned.  Does not return null.
     *
     * @param info Information about application being queried.
     *
     * @return Returns the image of the icon, or the default application icon
     * if it could not be found.
     *
     * @see #getApplicationIcon(String)
     */
    public abstract Drawable getApplicationIcon(ApplicationInfo info);

    /**
     * Retrieve the icon associated with an application.  Given the name of the
     * application's package, retrieves the information about it and calls
     * getApplicationIcon() to return its icon. If the application can not be
     * found, NameNotFoundException is thrown.
     *
     * @param packageName Name of the package whose application icon is to be
     *                    retrieved.
     *
     * @return Returns the image of the icon, or the default application icon
     * if it could not be found.  Does not return null.
     * @throws NameNotFoundException Thrown if the resources for the given
     * application could not be loaded.
     *
     * @see #getApplicationIcon(ApplicationInfo)
     */
    public abstract Drawable getApplicationIcon(String packageName)
            throws NameNotFoundException;

    /**
     * Retrieve text from a package.  This is a low-level API used by
     * the various package manager info structures (such as
     * {@link ComponentInfo} to implement retrieval of their associated
     * labels and other text.
     *
     * @param packageName The name of the package that this text is coming from.
     * Can not be null.
     * @param resid The resource identifier of the desired text.  Can not be 0.
     * @param appInfo Overall information about <var>packageName.  This
     * may be null, in which case the application information will be retrieved
     * for you if needed; if you already have this information around, it can
     * be much more efficient to supply it here.
     *
     * @return Returns a CharSequence holding the requested text.  Returns null
     * if the text could not be found for any reason.
     */
    public abstract CharSequence getText(String packageName, int resid,
            ApplicationInfo appInfo);

    /**
     * Retrieve an XML file from a package.  This is a low-level API used to
     * retrieve XML meta data.
     *
     * @param packageName The name of the package that this xml is coming from.
     * Can not be null.
     * @param resid The resource identifier of the desired xml.  Can not be 0.
     * @param appInfo Overall information about <var>packageName.  This
     * may be null, in which case the application information will be retrieved
     * for you if needed; if you already have this information around, it can
     * be much more efficient to supply it here.
     *
     * @return Returns an XmlPullParser allowing you to parse out the XML
     * data.  Returns null if the xml resource could not be found for any
     * reason.
     */
    public abstract XmlResourceParser getXml(String packageName, int resid,
            ApplicationInfo appInfo);

    /**
     * Return the label to use for this application.
     *
     * @return Returns the label associated with this application, or null if
     * it could not be found for any reason.
     * @param info The application to get the label of
     */
    public abstract CharSequence getApplicationLabel(ApplicationInfo info);

    /**
     * Retrieve the resources associated with an activity.  Given the full
     * name of an activity, retrieves the information about it and calls
     * getResources() to return its application's resources.  If the activity
     * can not be found, NameNotFoundException is thrown.
     *
     * @param activityName Name of the activity whose resources are to be
     *                     retrieved.
     *
     * @return Returns the application's Resources.
     * @throws NameNotFoundException Thrown if the resources for the given
     * application could not be loaded.
     *
     * @see #getResourcesForApplication(ApplicationInfo)
     */
    public abstract Resources getResourcesForActivity(ComponentName activityName)
            throws NameNotFoundException;

    /**
     * Retrieve the resources for an application.  Throws NameNotFoundException
     * if the package is no longer installed.
     *
     * @param app Information about the desired application.
     *
     * @return Returns the application's Resources.
     * @throws NameNotFoundException Thrown if the resources for the given
     * application could not be loaded (most likely because it was uninstalled).
     */
    public abstract Resources getResourcesForApplication(ApplicationInfo app)
            throws NameNotFoundException;

    /**
     * Retrieve the resources associated with an application.  Given the full
     * package name of an application, retrieves the information about it and
     * calls getResources() to return its application's resources.  If the
     * appPackageName can not be found, NameNotFoundException is thrown.
     *
     * @param appPackageName Package name of the application whose resources
     *                       are to be retrieved.
     *
     * @return Returns the application's Resources.
     * @throws NameNotFoundException Thrown if the resources for the given
     * application could not be loaded.
     *
     * @see #getResourcesForApplication(ApplicationInfo)
     */
    public abstract Resources getResourcesForApplication(String appPackageName)
            throws NameNotFoundException;

    /**
     * Retrieve overall information about an application package defined
     * in a package archive file
     *
     * @param archiveFilePath The path to the archive file
     * @param flags Additional option flags. Use any combination of
     * {@link #GET_ACTIVITIES},
     * {@link #GET_GIDS},
     * {@link #GET_CONFIGURATIONS},
     * {@link #GET_INSTRUMENTATION},
     * {@link #GET_PERMISSIONS},
     * {@link #GET_PROVIDERS},
     * {@link #GET_RECEIVERS},
     * {@link #GET_SERVICES},
     * {@link #GET_SIGNATURES}, to modify the data returned.
     *
     * @return Returns the information about the package. Returns
     * null if the package could not be successfully parsed.
     *
     * @see #GET_ACTIVITIES
     * @see #GET_GIDS
     * @see #GET_CONFIGURATIONS
     * @see #GET_INSTRUMENTATION
     * @see #GET_PERMISSIONS
     * @see #GET_PROVIDERS
     * @see #GET_RECEIVERS
     * @see #GET_SERVICES
     * @see #GET_SIGNATURES
     * 
     */
    public PackageInfo getPackageArchiveInfo(String archiveFilePath, int flags) {
        PackageParser packageParser = new PackageParser(archiveFilePath);
        DisplayMetrics metrics = new DisplayMetrics();
        metrics.setToDefaults();
        final File sourceFile = new File(archiveFilePath);
        PackageParser.Package pkg = packageParser.parsePackage(
                sourceFile, archiveFilePath, metrics, 0);
        if (pkg == null) {
            return null;
        }
        return PackageParser.generatePackageInfo(pkg, null, flags);
    }

    /**
     * @hide
     * 
     * Install a package. Since this may take a little while, the result will
     * be posted back to the given observer.  An installation will fail if the calling context
     * lacks the {@link android.Manifest.permission#INSTALL_PACKAGES} permission, if the
     * package named in the package file's manifest is already installed, or if there's no space
     * available on the device.
     *
     * @param packageURI The location of the package file to install.  This can be a 'file:' or a
     * 'content:' URI.
     * @param observer An observer callback to get notified when the package installation is
     * complete. {@link IPackageInstallObserver#packageInstalled(String, int)} will be
     * called when that happens.  observer may be null to indicate that no callback is desired.
     * @param flags - possible values: {@link #INSTALL_FORWARD_LOCK},
     * {@link #INSTALL_REPLACE_EXISTING}, {@link #INSTALL_ALLOW_TEST}.
     * @param installerPackageName Optional package name of the application that is performing the
     * installation. This identifies which market the package came from.
     */
    public abstract void installPackage(
            Uri packageURI, IPackageInstallObserver observer, int flags,
            String installerPackageName);

    /**
     * Attempts to delete a package.  Since this may take a little while, the result will
     * be posted back to the given observer.  A deletion will fail if the calling context
     * lacks the {@link android.Manifest.permission#DELETE_PACKAGES} permission, if the
     * named package cannot be found, or if the named package is a "system package".
     * (TODO: include pointer to documentation on "system packages")
     *
     * @param packageName The name of the package to delete
     * @param observer An observer callback to get notified when the package deletion is
     * complete. {@link android.content.pm.IPackageDeleteObserver#packageDeleted(boolean)} will be
     * called when that happens.  observer may be null to indicate that no callback is desired.
     * @param flags - possible values: {@link #DONT_DELETE_DATA}
     *
     * @hide
     */
    public abstract void deletePackage(
            String packageName, IPackageDeleteObserver observer, int flags);

    /**
     * Retrieve the package name of the application that installed a package. This identifies
     * which market the package came from.
     * 
     * @param packageName The name of the package to query
     */
    public abstract String getInstallerPackageName(String packageName);
    
    /**
     * Attempts to clear the user data directory of an application.
     * Since this may take a little while, the result will
     * be posted back to the given observer.  A deletion will fail if the
     * named package cannot be found, or if the named package is a "system package".
     *
     * @param packageName The name of the package
     * @param observer An observer callback to get notified when the operation is finished
     * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
     * will be called when that happens.  observer may be null to indicate that
     * no callback is desired.
     *
     * @hide
     */
    public abstract void clearApplicationUserData(String packageName,
            IPackageDataObserver observer);
    /**
     * Attempts to delete the cache files associated with an application.
     * Since this may take a little while, the result will
     * be posted back to the given observer.  A deletion will fail if the calling context
     * lacks the {@link android.Manifest.permission#DELETE_CACHE_FILES} permission, if the
     * named package cannot be found, or if the named package is a "system package".
     *
     * @param packageName The name of the package to delete
     * @param observer An observer callback to get notified when the cache file deletion
     * is complete.
     * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
     * will be called when that happens.  observer may be null to indicate that
     * no callback is desired.
     *
     * @hide
     */
    public abstract void deleteApplicationCacheFiles(String packageName,
            IPackageDataObserver observer);

    /**
     * Free storage by deleting LRU sorted list of cache files across
     * all applications. If the currently available free storage
     * on the device is greater than or equal to the requested
     * free storage, no cache files are cleared. If the currently
     * available storage on the device is less than the requested
     * free storage, some or all of the cache files across
     * all applications are deleted (based on last accessed time)
     * to increase the free storage space on the device to
     * the requested value. There is no guarantee that clearing all
     * the cache files from all applications will clear up
     * enough storage to achieve the desired value.
     * @param freeStorageSize The number of bytes of storage to be
     * freed by the system. Say if freeStorageSize is XX,
     * and the current free storage is YY,
     * if XX is less than YY, just return. if not free XX-YY number
     * of bytes if possible.
     * @param observer call back used to notify when
     * the operation is completed
     * 
     * @hide
     */
    public abstract void freeStorageAndNotify(long freeStorageSize, IPackageDataObserver observer);

    /**
     * Free storage by deleting LRU sorted list of cache files across
     * all applications. If the currently available free storage
     * on the device is greater than or equal to the requested
     * free storage, no cache files are cleared. If the currently
     * available storage on the device is less than the requested
     * free storage, some or all of the cache files across
     * all applications are deleted (based on last accessed time)
     * to increase the free storage space on the device to
     * the requested value. There is no guarantee that clearing all
     * the cache files from all applications will clear up
     * enough storage to achieve the desired value.
     * @param freeStorageSize The number of bytes of storage to be
     * freed by the system. Say if freeStorageSize is XX,
     * and the current free storage is YY,
     * if XX is less than YY, just return. if not free XX-YY number
     * of bytes if possible.
     * @param pi IntentSender call back used to
     * notify when the operation is completed.May be null
     * to indicate that no call back is desired.
     * 
     * @hide
     */
    public abstract void freeStorage(long freeStorageSize, IntentSender pi);

    /**
     * Retrieve the size information for a package.
     * Since this may take a little while, the result will
     * be posted back to the given observer.  The calling context
     * should have the {@link android.Manifest.permission#GET_PACKAGE_SIZE} permission.
     *
     * @param packageName The name of the package whose size information is to be retrieved
     * @param observer An observer callback to get notified when the operation
     * is complete.
     * {@link android.content.pm.IPackageStatsObserver#onGetStatsCompleted(PackageStats, boolean)}
     * The observer's callback is invoked with a PackageStats object(containing the
     * code, data and cache sizes of the package) and a boolean value representing
     * the status of the operation. observer may be null to indicate that
     * no callback is desired.
     *
     * @hide
     */
    public abstract void getPackageSizeInfo(String packageName,
            IPackageStatsObserver observer);

    /**
     * @deprecated This function no longer does anything; it was an old
     * approach to managing preferred activities, which has been superceeded
     * (and conflicts with) the modern activity-based preferences.
     */
    @Deprecated
    public abstract void addPackageToPreferred(String packageName);

    /**
     * @deprecated This function no longer does anything; it was an old
     * approach to managing preferred activities, which has been superceeded
     * (and conflicts with) the modern activity-based preferences.
     */
    @Deprecated
    public abstract void removePackageFromPreferred(String packageName);

    /**
     * Retrieve the list of all currently configured preferred packages.  The
     * first package on the list is the most preferred, the last is the
     * least preferred.
     *
     * @param flags Additional option flags. Use any combination of
     * {@link #GET_ACTIVITIES},
     * {@link #GET_GIDS},
     * {@link #GET_CONFIGURATIONS},
     * {@link #GET_INSTRUMENTATION},
     * {@link #GET_PERMISSIONS},
     * {@link #GET_PROVIDERS},
     * {@link #GET_RECEIVERS},
     * {@link #GET_SERVICES},
     * {@link #GET_SIGNATURES}, to modify the data returned.
     *
     * @return Returns a list of PackageInfo objects describing each
     * preferred application, in order of preference.
     *
     * @see #GET_ACTIVITIES
     * @see #GET_GIDS
     * @see #GET_CONFIGURATIONS
     * @see #GET_INSTRUMENTATION
     * @see #GET_PERMISSIONS
     * @see #GET_PROVIDERS
     * @see #GET_RECEIVERS
     * @see #GET_SERVICES
     * @see #GET_SIGNATURES
     */
    public abstract List<PackageInfo> getPreferredPackages(int flags);

    /**
     * @deprecated This is a protected API that should not have been available
     * to third party applications.  It is the platform's responsibility for
     * assigning preferred activities and this can not be directly modified.
     * 
     * Add a new preferred activity mapping to the system.  This will be used
     * to automatically select the given activity component when
     * {@link Context#startActivity(Intent) Context.startActivity()} finds
     * multiple matching activities and also matches the given filter.
     *
     * @param filter The set of intents under which this activity will be
     * made preferred.
     * @param match The IntentFilter match category that this preference
     * applies to.
     * @param set The set of activities that the user was picking from when
     * this preference was made.
     * @param activity The component name of the activity that is to be
     * preferred.
     */
    @Deprecated
    public abstract void addPreferredActivity(IntentFilter filter, int match,
            ComponentName[] set, ComponentName activity);

    /**
     * @deprecated This is a protected API that should not have been available
     * to third party applications.  It is the platform's responsibility for
     * assigning preferred activities and this can not be directly modified.
     * 
     * Replaces an existing preferred activity mapping to the system, and if that were not present
     * adds a new preferred activity.  This will be used
     * to automatically select the given activity component when
     * {@link Context#startActivity(Intent) Context.startActivity()} finds
     * multiple matching activities and also matches the given filter.
     *
     * @param filter The set of intents under which this activity will be
     * made preferred.
     * @param match The IntentFilter match category that this preference
     * applies to.
     * @param set The set of activities that the user was picking from when
     * this preference was made.
     * @param activity The component name of the activity that is to be
     * preferred.
     * @hide
     */
    @Deprecated
    public abstract void replacePreferredActivity(IntentFilter filter, int match,
            ComponentName[] set, ComponentName activity);

    /**
     * Remove all preferred activity mappings, previously added with
     * {@link #addPreferredActivity}, from the
     * system whose activities are implemented in the given package name.
     * An application can only clear its own package(s).
     *
     * @param packageName The name of the package whose preferred activity
     * mappings are to be removed.
     */
    public abstract void clearPackagePreferredActivities(String packageName);

    /**
     * Retrieve all preferred activities, previously added with
     * {@link #addPreferredActivity}, that are
     * currently registered with the system.
     *
     * @param outFilters A list in which to place the filters of all of the
     * preferred activities, or null for none.
     * @param outActivities A list in which to place the component names of
     * all of the preferred activities, or null for none.
     * @param packageName An option package in which you would like to limit
     * the list.  If null, all activities will be returned; if non-null, only
     * those activities in the given package are returned.
     *
     * @return Returns the total number of registered preferred activities
     * (the number of distinct IntentFilter records, not the number of unique
     * activity components) that were found.
     */
    public abstract int getPreferredActivities(List<IntentFilter> outFilters,
            List<ComponentName> outActivities, String packageName);

    /**
     * Set the enabled setting for a package component (activity, receiver, service, provider).
     * This setting will override any enabled state which may have been set by the component in its
     * manifest.
     *
     * @param componentName The component to enable
     * @param newState The new enabled state for the component.  The legal values for this state
     *                 are:
     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
     *                   and
     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
     *                 The last one removes the setting, thereby restoring the component's state to
     *                 whatever was set in it's manifest (or enabled, by default).
     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
     */
    public abstract void setComponentEnabledSetting(ComponentName componentName,
            int newState, int flags);


    /**
     * Return the the enabled setting for a package component (activity,
     * receiver, service, provider).  This returns the last value set by
     * {@link #setComponentEnabledSetting(ComponentName, int, int)}; in most
     * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
     * the value originally specified in the manifest has not been modified.
     *
     * @param componentName The component to retrieve.
     * @return Returns the current enabled state for the component.  May
     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
     * component's enabled state is based on the original information in
     * the manifest as found in {@link ComponentInfo}.
     */
    public abstract int getComponentEnabledSetting(ComponentName componentName);

    /**
     * Set the enabled setting for an application
     * This setting will override any enabled state which may have been set by the application in
     * its manifest.  It also overrides the enabled state set in the manifest for any of the
     * application's components.  It does not override any enabled state set by
     * {@link #setComponentEnabledSetting} for any of the application's components.
     *
     * @param packageName The package name of the application to enable
     * @param newState The new enabled state for the component.  The legal values for this state
     *                 are:
     *                   {@link #COMPONENT_ENABLED_STATE_ENABLED},
     *                   {@link #COMPONENT_ENABLED_STATE_DISABLED}
     *                   and
     *                   {@link #COMPONENT_ENABLED_STATE_DEFAULT}
     *                 The last one removes the setting, thereby restoring the applications's state to
     *                 whatever was set in its manifest (or enabled, by default).
     * @param flags Optional behavior flags: {@link #DONT_KILL_APP} or 0.
     */
    public abstract void setApplicationEnabledSetting(String packageName,
            int newState, int flags);
    
    /**
     * Return the the enabled setting for an application.  This returns
     * the last value set by
     * {@link #setApplicationEnabledSetting(String, int, int)}; in most
     * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
     * the value originally specified in the manifest has not been modified.
     *
     * @param packageName The component to retrieve.
     * @return Returns the current enabled state for the component.  May
     * be one of {@link #COMPONENT_ENABLED_STATE_ENABLED},
     * {@link #COMPONENT_ENABLED_STATE_DISABLED}, or
     * {@link #COMPONENT_ENABLED_STATE_DEFAULT}.  The last one means the
     * application's enabled state is based on the original information in
     * the manifest as found in {@link ComponentInfo}.
     */
    public abstract int getApplicationEnabledSetting(String packageName);

    /**
     * Return whether the device has been booted into safe mode.
     */
    public abstract boolean isSafeMode();

    /**
     * Attempts to move package resources from internal to external media or vice versa.
     * Since this may take a little while, the result will
     * be posted back to the given observer.   This call may fail if the calling context
     * lacks the {@link android.Manifest.permission#MOVE_PACKAGE} permission, if the
     * named package cannot be found, or if the named package is a "system package".
     *
     * @param packageName The name of the package to delete
     * @param observer An observer callback to get notified when the package move is
     * complete. {@link android.content.pm.IPackageMoveObserver#packageMoved(boolean)} will be
     * called when that happens.  observer may be null to indicate that no callback is desired.
     * @param flags To indicate install location {@link #MOVE_INTERNAL} or
     * {@link #MOVE_EXTERNAL_MEDIA}
     *
     * @hide
     */
    public abstract void movePackage(
            String packageName, IPackageMoveObserver observer, int flags);
}

Other Android examples (source code examples)

Here is a short list of links related to this Android PackageManager.java source code file:

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