AndroidManifest.xml字段解析

AndroidManifest.xml采用xml文件格式描述,使用xml标签的形式描述每个属性,AndroidManifest.xml的解析也遵循xml解析的规律,对AndroidManifest.xml的解析主要用到PackageManager,PackageInfo,ApplicationInfo三个类,PackageInfo描述了应用级的信息,包括应用的版本号,版本名称,对应AndroidManifest.xml最外层的信息,ApplicationInfo描述了标签之间的信息,包括声明的meta-data和activity信息,

PackageInfo.java源码

/*
 * Copyright (C) 2007 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.os.Parcel;
import android.os.Parcelable;

/**
 * Overall information about the contents of a package.  This corresponds
 * to all of the information collected from AndroidManifest.xml.
 */
public class PackageInfo implements Parcelable {
    /**
     * The name of this package.  From the  tag's "name"
     * attribute.
     */
    public String packageName;

    /**
     * The version number of this package, as specified by the 
     * tag's {@link android.R.styleable#AndroidManifest_versionCode versionCode}
     * attribute.
     */
    public int versionCode;
    
    /**
     * The version name of this package, as specified by the 
     * tag's {@link android.R.styleable#AndroidManifest_versionName versionName}
     * attribute.
     */
    public String versionName;
    
    /**
     * The shared user ID name of this package, as specified by the 
     * tag's {@link android.R.styleable#AndroidManifest_sharedUserId sharedUserId}
     * attribute.
     */
    public String sharedUserId;
    
    /**
     * The shared user ID label of this package, as specified by the 
     * tag's {@link android.R.styleable#AndroidManifest_sharedUserLabel sharedUserLabel}
     * attribute.
     */
    public int sharedUserLabel;
    
    /**
     * Information collected from the  tag, or null if
     * there was none.
     */
    public ApplicationInfo applicationInfo;
    
    /**
     * The time at which the app was first installed.  Units are as
     * per {@link System#currentTimeMillis()}.
     */
    public long firstInstallTime;

    /**
     * The time at which the app was last updated.  Units are as
     * per {@link System#currentTimeMillis()}.
     */
    public long lastUpdateTime;

    /**
     * All kernel group-IDs that have been assigned to this package.
     * This is only filled in if the flag {@link PackageManager#GET_GIDS} was set.
     */
    public int[] gids;

    /**
     * Array of all {@link android.R.styleable#AndroidManifestActivity
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_ACTIVITIES} was set.
     */
    public ActivityInfo[] activities;

    /**
     * Array of all {@link android.R.styleable#AndroidManifestReceiver
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_RECEIVERS} was set.
     */
    public ActivityInfo[] receivers;

    /**
     * Array of all {@link android.R.styleable#AndroidManifestService
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_SERVICES} was set.
     */
    public ServiceInfo[] services;

    /**
     * Array of all {@link android.R.styleable#AndroidManifestProvider
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_PROVIDERS} was set.
     */
    public ProviderInfo[] providers;

    /**
     * Array of all {@link android.R.styleable#AndroidManifestInstrumentation
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_INSTRUMENTATION} was set.
     */
    public InstrumentationInfo[] instrumentation;
    
    /**
     * Array of all {@link android.R.styleable#AndroidManifestPermission
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_PERMISSIONS} was set.
     */
    public PermissionInfo[] permissions;
    
    /**
     * Array of all {@link android.R.styleable#AndroidManifestUsesPermission
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_PERMISSIONS} was set.  This list includes
     * all permissions requested, even those that were not granted or known
     * by the system at install time.
     */
    public String[] requestedPermissions;
    
    /**
     * Array of flags of all {@link android.R.styleable#AndroidManifestUsesPermission
     * } tags included under ,
     * or null if there were none.  This is only filled in if the flag
     * {@link PackageManager#GET_PERMISSIONS} was set.  Each value matches
     * the corresponding entry in {@link #requestedPermissions}, and will have
     * the flags {@link #REQUESTED_PERMISSION_REQUIRED} and
     * {@link #REQUESTED_PERMISSION_GRANTED} set as appropriate.
     */
    public int[] requestedPermissionsFlags;

    /**
     * Flag for {@link #requestedPermissionsFlags}: the requested permission
     * is required for the application to run; the user can not optionally
     * disable it.  Currently all permissions are required.
     */
    public static final int REQUESTED_PERMISSION_REQUIRED = 1<<0;

    /**
     * Flag for {@link #requestedPermissionsFlags}: the requested permission
     * is currently granted to the application.
     */
    public static final int REQUESTED_PERMISSION_GRANTED = 1<<1;

    /**
     * Array of all signatures read from the package file.  This is only filled
     * in if the flag {@link PackageManager#GET_SIGNATURES} was set.
     */
    public Signature[] signatures;
    
    /**
     * Application specified preferred configuration
     * {@link android.R.styleable#AndroidManifestUsesConfiguration
     * } tags included under ,
     * or null if there were none. This is only filled in if the flag
     * {@link PackageManager#GET_CONFIGURATIONS} was set.  
     */
    public ConfigurationInfo[] configPreferences;

    /**
     * The features that this application has said it requires.
     */
    public FeatureInfo[] reqFeatures;

    /**
     * Constant corresponding to auto in
     * the {@link android.R.attr#installLocation} attribute.
     * @hide
     */
    public static final int INSTALL_LOCATION_UNSPECIFIED = -1;
    /**
     * Constant corresponding to auto in
     * the {@link android.R.attr#installLocation} attribute.
     * @hide
     */
    public static final int INSTALL_LOCATION_AUTO = 0;
    /**
     * Constant corresponding to internalOnly in
     * the {@link android.R.attr#installLocation} attribute.
     * @hide
     */
    public static final int INSTALL_LOCATION_INTERNAL_ONLY = 1;
    /**
     * Constant corresponding to preferExternal in
     * the {@link android.R.attr#installLocation} attribute.
     * @hide
     */
    public static final int INSTALL_LOCATION_PREFER_EXTERNAL = 2;
    /**
     * The install location requested by the activity.  From the
     * {@link android.R.attr#installLocation} attribute, one of
     * {@link #INSTALL_LOCATION_AUTO},
     * {@link #INSTALL_LOCATION_INTERNAL_ONLY},
     * {@link #INSTALL_LOCATION_PREFER_EXTERNAL}
     * @hide
     */
    public int installLocation = INSTALL_LOCATION_INTERNAL_ONLY;
    
    public PackageInfo() {
    }

    public String toString() {
        return "PackageInfo{"
            + Integer.toHexString(System.identityHashCode(this))
            + " " + packageName + "}";
    }

    public int describeContents() {
        return 0;
    }

    public void writeToParcel(Parcel dest, int parcelableFlags) {
        dest.writeString(packageName);
        dest.writeInt(versionCode);
        dest.writeString(versionName);
        dest.writeString(sharedUserId);
        dest.writeInt(sharedUserLabel);
        if (applicationInfo != null) {
            dest.writeInt(1);
            applicationInfo.writeToParcel(dest, parcelableFlags);
        } else {
            dest.writeInt(0);
        }
        dest.writeLong(firstInstallTime);
        dest.writeLong(lastUpdateTime);
        dest.writeIntArray(gids);
        dest.writeTypedArray(activities, parcelableFlags);
        dest.writeTypedArray(receivers, parcelableFlags);
        dest.writeTypedArray(services, parcelableFlags);
        dest.writeTypedArray(providers, parcelableFlags);
        dest.writeTypedArray(instrumentation, parcelableFlags);
        dest.writeTypedArray(permissions, parcelableFlags);
        dest.writeStringArray(requestedPermissions);
        dest.writeIntArray(requestedPermissionsFlags);
        dest.writeTypedArray(signatures, parcelableFlags);
        dest.writeTypedArray(configPreferences, parcelableFlags);
        dest.writeTypedArray(reqFeatures, parcelableFlags);
        dest.writeInt(installLocation);
    }

    public static final Parcelable.Creator CREATOR
            = new Parcelable.Creator() {
        public PackageInfo createFromParcel(Parcel source) {
            return new PackageInfo(source);
        }

        public PackageInfo[] newArray(int size) {
            return new PackageInfo[size];
        }
    };

    private PackageInfo(Parcel source) {
        packageName = source.readString();
        versionCode = source.readInt();
        versionName = source.readString();
        sharedUserId = source.readString();
        sharedUserLabel = source.readInt();
        int hasApp = source.readInt();
        if (hasApp != 0) {
            applicationInfo = ApplicationInfo.CREATOR.createFromParcel(source);
        }
        firstInstallTime = source.readLong();
        lastUpdateTime = source.readLong();
        gids = source.createIntArray();
        activities = source.createTypedArray(ActivityInfo.CREATOR);
        receivers = source.createTypedArray(ActivityInfo.CREATOR);
        services = source.createTypedArray(ServiceInfo.CREATOR);
        providers = source.createTypedArray(ProviderInfo.CREATOR);
        instrumentation = source.createTypedArray(InstrumentationInfo.CREATOR);
        permissions = source.createTypedArray(PermissionInfo.CREATOR);
        requestedPermissions = source.createStringArray();
        requestedPermissionsFlags = source.createIntArray();
        signatures = source.createTypedArray(Signature.CREATOR);
        configPreferences = source.createTypedArray(ConfigurationInfo.CREATOR);
        reqFeatures = source.createTypedArray(FeatureInfo.CREATOR);
        installLocation = source.readInt();
    }
}

ApplicationInfo.java源码:

/*
 * Copyright (C) 2007 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.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Printer;

import java.text.Collator;
import java.util.Comparator;

/**
 * Information you can retrieve about a particular application.  This
 * corresponds to information collected from the AndroidManifest.xml's
 *  tag.
 */
public class ApplicationInfo extends PackageItemInfo implements Parcelable {
    
    /**
     * Default task affinity of all activities in this application. See 
     * {@link ActivityInfo#taskAffinity} for more information.  This comes 
     * from the "taskAffinity" attribute. 
     */
    public String taskAffinity;
    
    /**
     * Optional name of a permission required to be able to access this
     * application's components.  From the "permission" attribute.
     */
    public String permission;
    
    /**
     * The name of the process this application should run in.  From the
     * "process" attribute or, if not set, the same as
     * packageName.
     */
    public String processName;
    
    /**
     * Class implementing the Application object.  From the "class"
     * attribute.
     */
    public String className;
    
    /**
     * A style resource identifier (in the package's resources) of the
     * description of an application.  From the "description" attribute
     * or, if not set, 0.
     */
    public int descriptionRes;    
    
    /**
     * A style resource identifier (in the package's resources) of the
     * default visual theme of the application.  From the "theme" attribute
     * or, if not set, 0.
     */
    public int theme;
    
    /**
     * Class implementing the Application's manage space
     * functionality.  From the "manageSpaceActivity"
     * attribute. This is an optional attribute and will be null if
     * applications don't specify it in their manifest
     */
    public String manageSpaceActivityName;    
    
    /**
     * Class implementing the Application's backup functionality.  From
     * the "backupAgent" attribute.  This is an optional attribute and
     * will be null if the application does not specify it in its manifest.
     * 
     * 

If android:allowBackup is set to false, this attribute is ignored. */ public String backupAgentName; /** * The default extra UI options for activities in this application. * Set from the {@link android.R.attr#uiOptions} attribute in the * activity's manifest. */ public int uiOptions = 0; /** * Value for {@link #flags}: if set, this application is installed in the * device's system image. */ public static final int FLAG_SYSTEM = 1<<0; /** * Value for {@link #flags}: set to true if this application would like to * allow debugging of its * code, even when installed on a non-development system. Comes * from {@link android.R.styleable#AndroidManifestApplication_debuggable * android:debuggable} of the tag. */ public static final int FLAG_DEBUGGABLE = 1<<1; /** * Value for {@link #flags}: set to true if this application has code * associated with it. Comes * from {@link android.R.styleable#AndroidManifestApplication_hasCode * android:hasCode} of the tag. */ public static final int FLAG_HAS_CODE = 1<<2; /** * Value for {@link #flags}: set to true if this application is persistent. * Comes from {@link android.R.styleable#AndroidManifestApplication_persistent * android:persistent} of the tag. */ public static final int FLAG_PERSISTENT = 1<<3; /** * Value for {@link #flags}: set to true if this application holds the * {@link android.Manifest.permission#FACTORY_TEST} permission and the * device is running in factory test mode. */ public static final int FLAG_FACTORY_TEST = 1<<4; /** * Value for {@link #flags}: default value for the corresponding ActivityInfo flag. * Comes from {@link android.R.styleable#AndroidManifestApplication_allowTaskReparenting * android:allowTaskReparenting} of the tag. */ public static final int FLAG_ALLOW_TASK_REPARENTING = 1<<5; /** * Value for {@link #flags}: default value for the corresponding ActivityInfo flag. * Comes from {@link android.R.styleable#AndroidManifestApplication_allowClearUserData * android:allowClearUserData} of the tag. */ public static final int FLAG_ALLOW_CLEAR_USER_DATA = 1<<6; /** * Value for {@link #flags}: this is set if this application has been * install as an update to a built-in system application. */ public static final int FLAG_UPDATED_SYSTEM_APP = 1<<7; /** * Value for {@link #flags}: this is set of the application has specified * {@link android.R.styleable#AndroidManifestApplication_testOnly * android:testOnly} to be true. */ public static final int FLAG_TEST_ONLY = 1<<8; /** * Value for {@link #flags}: true when the application's window can be * reduced in size for smaller screens. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_smallScreens * android:smallScreens}. */ public static final int FLAG_SUPPORTS_SMALL_SCREENS = 1<<9; /** * Value for {@link #flags}: true when the application's window can be * displayed on normal screens. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_normalScreens * android:normalScreens}. */ public static final int FLAG_SUPPORTS_NORMAL_SCREENS = 1<<10; /** * Value for {@link #flags}: true when the application's window can be * increased in size for larger screens. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_largeScreens * android:largeScreens}. */ public static final int FLAG_SUPPORTS_LARGE_SCREENS = 1<<11; /** * Value for {@link #flags}: true when the application knows how to adjust * its UI for different screen sizes. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_resizeable * android:resizeable}. */ public static final int FLAG_RESIZEABLE_FOR_SCREENS = 1<<12; /** * Value for {@link #flags}: true when the application knows how to * accomodate different screen densities. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_anyDensity * android:anyDensity}. */ public static final int FLAG_SUPPORTS_SCREEN_DENSITIES = 1<<13; /** * Value for {@link #flags}: set to true if this application would like to * request the VM to operate under the safe mode. Comes from * {@link android.R.styleable#AndroidManifestApplication_vmSafeMode * android:vmSafeMode} of the tag. */ public static final int FLAG_VM_SAFE_MODE = 1<<14; /** * Value for {@link #flags}: set to false if the application does not wish * to permit any OS-driven backups of its data; true otherwise. * *

Comes from the * {@link android.R.styleable#AndroidManifestApplication_allowBackup android:allowBackup} * attribute of the tag. */ public static final int FLAG_ALLOW_BACKUP = 1<<15; /** * Value for {@link #flags}: set to false if the application must be kept * in memory following a full-system restore operation; true otherwise. * Ordinarily, during a full system restore operation each application is shut down * following execution of its agent's onRestore() method. Setting this attribute to * false prevents this. Most applications will not need to set this attribute. * *

If * {@link android.R.styleable#AndroidManifestApplication_allowBackup android:allowBackup} * is set to false or no * {@link android.R.styleable#AndroidManifestApplication_backupAgent android:backupAgent} * is specified, this flag will be ignored. * *

Comes from the * {@link android.R.styleable#AndroidManifestApplication_killAfterRestore android:killAfterRestore} * attribute of the tag. */ public static final int FLAG_KILL_AFTER_RESTORE = 1<<16; /** * Value for {@link #flags}: Set to true if the application's backup * agent claims to be able to handle restore data even "from the future," * i.e. from versions of the application with a versionCode greater than * the one currently installed on the device. Use with caution! By default * this attribute is false and the Backup Manager will ensure that data * from "future" versions of the application are never supplied during a restore operation. * *

If * {@link android.R.styleable#AndroidManifestApplication_allowBackup android:allowBackup} * is set to false or no * {@link android.R.styleable#AndroidManifestApplication_backupAgent android:backupAgent} * is specified, this flag will be ignored. * *

Comes from the * {@link android.R.styleable#AndroidManifestApplication_restoreAnyVersion android:restoreAnyVersion} * attribute of the tag. */ public static final int FLAG_RESTORE_ANY_VERSION = 1<<17; /** * Value for {@link #flags}: Set to true if the application is * currently installed on external/removable/unprotected storage. Such * applications may not be available if their storage is not currently * mounted. When the storage it is on is not available, it will look like * the application has been uninstalled (its .apk is no longer available) * but its persistent data is not removed. */ public static final int FLAG_EXTERNAL_STORAGE = 1<<18; /** * Value for {@link #flags}: true when the application's window can be * increased in size for extra large screens. Corresponds to * {@link android.R.styleable#AndroidManifestSupportsScreens_xlargeScreens * android:xlargeScreens}. */ public static final int FLAG_SUPPORTS_XLARGE_SCREENS = 1<<19; /** * Value for {@link #flags}: true when the application has requested a * large heap for its processes. Corresponds to * {@link android.R.styleable#AndroidManifestApplication_largeHeap * android:largeHeap}. */ public static final int FLAG_LARGE_HEAP = 1<<20; /** * Value for {@link #flags}: true if this application's package is in * the stopped state. */ public static final int FLAG_STOPPED = 1<<21; /** * Value for {@link #flags}: true when the application is willing to support * RTL (right to left). All activities will inherit this value. * * Set from the {@link android.R.attr#supportsRtl} attribute in the * activity's manifest. * * Default value is false (no support for RTL). */ public static final int FLAG_SUPPORTS_RTL = 1<<22; /** * Value for {@link #flags}: true if the application is currently * installed for the calling user. */ public static final int FLAG_INSTALLED = 1<<23; /** * Value for {@link #flags}: true if the application only has its * data installed; the application package itself does not currently * exist on the device. */ public static final int FLAG_IS_DATA_ONLY = 1<<24; /** * Value for {@link #flags}: Set to true if the application has been * installed using the forward lock option. * * NOTE: DO NOT CHANGE THIS VALUE! It is saved in packages.xml. * * {@hide} */ public static final int FLAG_FORWARD_LOCK = 1<<29; /** * Value for {@link #flags}: set to true if the application * has reported that it is heavy-weight, and thus can not participate in * the normal application lifecycle. * *

Comes from the * {@link android.R.styleable#AndroidManifestApplication_cantSaveState android:cantSaveState} * attribute of the tag. * * {@hide} */ public static final int FLAG_CANT_SAVE_STATE = 1<<28; /** * Flags associated with the application. Any combination of * {@link #FLAG_SYSTEM}, {@link #FLAG_DEBUGGABLE}, {@link #FLAG_HAS_CODE}, * {@link #FLAG_PERSISTENT}, {@link #FLAG_FACTORY_TEST}, and * {@link #FLAG_ALLOW_TASK_REPARENTING} * {@link #FLAG_ALLOW_CLEAR_USER_DATA}, {@link #FLAG_UPDATED_SYSTEM_APP}, * {@link #FLAG_TEST_ONLY}, {@link #FLAG_SUPPORTS_SMALL_SCREENS}, * {@link #FLAG_SUPPORTS_NORMAL_SCREENS}, * {@link #FLAG_SUPPORTS_LARGE_SCREENS}, {@link #FLAG_SUPPORTS_XLARGE_SCREENS}, * {@link #FLAG_RESIZEABLE_FOR_SCREENS}, * {@link #FLAG_SUPPORTS_SCREEN_DENSITIES}, {@link #FLAG_VM_SAFE_MODE}, * {@link #FLAG_INSTALLED}. */ public int flags = 0; /** * The required smallest screen width the application can run on. If 0, * nothing has been specified. Comes from * {@link android.R.styleable#AndroidManifestSupportsScreens_requiresSmallestWidthDp * android:requiresSmallestWidthDp} attribute of the tag. */ public int requiresSmallestWidthDp = 0; /** * The maximum smallest screen width the application is designed for. If 0, * nothing has been specified. Comes from * {@link android.R.styleable#AndroidManifestSupportsScreens_compatibleWidthLimitDp * android:compatibleWidthLimitDp} attribute of the tag. */ public int compatibleWidthLimitDp = 0; /** * The maximum smallest screen width the application will work on. If 0, * nothing has been specified. Comes from * {@link android.R.styleable#AndroidManifestSupportsScreens_largestWidthLimitDp * android:largestWidthLimitDp} attribute of the tag. */ public int largestWidthLimitDp = 0; /** * Full path to the location of this package. */ public String sourceDir; /** * Full path to the location of the publicly available parts of this * package (i.e. the primary resource package and manifest). For * non-forward-locked apps this will be the same as {@link #sourceDir). */ public String publicSourceDir; /** * Full paths to the locations of extra resource packages this application * uses. This field is only used if there are extra resource packages, * otherwise it is null. * * {@hide} */ public String[] resourceDirs; /** * Paths to all shared libraries this application is linked against. This * field is only set if the {@link PackageManager#GET_SHARED_LIBRARY_FILES * PackageManager.GET_SHARED_LIBRARY_FILES} flag was used when retrieving * the structure. */ public String[] sharedLibraryFiles; /** * Full path to a directory assigned to the package for its persistent * data. */ public String dataDir; /** * Full path to the directory where native JNI libraries are stored. */ public String nativeLibraryDir; /** * The kernel user-ID that has been assigned to this application; * currently this is not a unique ID (multiple applications can have * the same uid). */ public int uid; /** * The minimum SDK version this application targets. It may run on earlier * versions, but it knows how to work with any new behavior added at this * version. Will be {@link android.os.Build.VERSION_CODES#CUR_DEVELOPMENT} * if this is a development build and the app is targeting that. You should * compare that this number is >= the SDK version number at which your * behavior was introduced. */ public int targetSdkVersion; /** * When false, indicates that all components within this application are * considered disabled, regardless of their individually set enabled status. */ public boolean enabled = true; /** * For convenient access to the current enabled setting of this app. * @hide */ public int enabledSetting = PackageManager.COMPONENT_ENABLED_STATE_DEFAULT; /** * For convenient access to package's install location. * @hide */ public int installLocation = PackageInfo.INSTALL_LOCATION_UNSPECIFIED; public void dump(Printer pw, String prefix) { super.dumpFront(pw, prefix); if (className != null) { pw.println(prefix + "className=" + className); } if (permission != null) { pw.println(prefix + "permission=" + permission); } pw.println(prefix + "processName=" + processName); pw.println(prefix + "taskAffinity=" + taskAffinity); pw.println(prefix + "uid=" + uid + " flags=0x" + Integer.toHexString(flags) + " theme=0x" + Integer.toHexString(theme)); pw.println(prefix + "requiresSmallestWidthDp=" + requiresSmallestWidthDp + " compatibleWidthLimitDp=" + compatibleWidthLimitDp + " largestWidthLimitDp=" + largestWidthLimitDp); pw.println(prefix + "sourceDir=" + sourceDir); if (sourceDir == null) { if (publicSourceDir != null) { pw.println(prefix + "publicSourceDir=" + publicSourceDir); } } else if (!sourceDir.equals(publicSourceDir)) { pw.println(prefix + "publicSourceDir=" + publicSourceDir); } if (resourceDirs != null) { pw.println(prefix + "resourceDirs=" + resourceDirs); } pw.println(prefix + "dataDir=" + dataDir); if (sharedLibraryFiles != null) { pw.println(prefix + "sharedLibraryFiles=" + sharedLibraryFiles); } pw.println(prefix + "enabled=" + enabled + " targetSdkVersion=" + targetSdkVersion); if (manageSpaceActivityName != null) { pw.println(prefix + "manageSpaceActivityName="+manageSpaceActivityName); } if (descriptionRes != 0) { pw.println(prefix + "description=0x"+Integer.toHexString(descriptionRes)); } if (uiOptions != 0) { pw.println(prefix + "uiOptions=0x" + Integer.toHexString(uiOptions)); } pw.println(prefix + "supportsRtl=" + (hasRtlSupport() ? "true" : "false")); super.dumpBack(pw, prefix); } /** * @return true if "supportsRtl" has been set to true in the AndroidManifest * @hide */ public boolean hasRtlSupport() { return (flags & FLAG_SUPPORTS_RTL) == FLAG_SUPPORTS_RTL; } public static class DisplayNameComparator implements Comparator { public DisplayNameComparator(PackageManager pm) { mPM = pm; } public final int compare(ApplicationInfo aa, ApplicationInfo ab) { CharSequence sa = mPM.getApplicationLabel(aa); if (sa == null) { sa = aa.packageName; } CharSequence sb = mPM.getApplicationLabel(ab); if (sb == null) { sb = ab.packageName; } return sCollator.compare(sa.toString(), sb.toString()); } private final Collator sCollator = Collator.getInstance(); private PackageManager mPM; } public ApplicationInfo() { } public ApplicationInfo(ApplicationInfo orig) { super(orig); taskAffinity = orig.taskAffinity; permission = orig.permission; processName = orig.processName; className = orig.className; theme = orig.theme; flags = orig.flags; requiresSmallestWidthDp = orig.requiresSmallestWidthDp; compatibleWidthLimitDp = orig.compatibleWidthLimitDp; largestWidthLimitDp = orig.largestWidthLimitDp; sourceDir = orig.sourceDir; publicSourceDir = orig.publicSourceDir; nativeLibraryDir = orig.nativeLibraryDir; resourceDirs = orig.resourceDirs; sharedLibraryFiles = orig.sharedLibraryFiles; dataDir = orig.dataDir; uid = orig.uid; targetSdkVersion = orig.targetSdkVersion; enabled = orig.enabled; enabledSetting = orig.enabledSetting; installLocation = orig.installLocation; manageSpaceActivityName = orig.manageSpaceActivityName; descriptionRes = orig.descriptionRes; uiOptions = orig.uiOptions; backupAgentName = orig.backupAgentName; } public String toString() { return "ApplicationInfo{" + Integer.toHexString(System.identityHashCode(this)) + " " + packageName + "}"; } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int parcelableFlags) { super.writeToParcel(dest, parcelableFlags); dest.writeString(taskAffinity); dest.writeString(permission); dest.writeString(processName); dest.writeString(className); dest.writeInt(theme); dest.writeInt(flags); dest.writeInt(requiresSmallestWidthDp); dest.writeInt(compatibleWidthLimitDp); dest.writeInt(largestWidthLimitDp); dest.writeString(sourceDir); dest.writeString(publicSourceDir); dest.writeString(nativeLibraryDir); dest.writeStringArray(resourceDirs); dest.writeStringArray(sharedLibraryFiles); dest.writeString(dataDir); dest.writeInt(uid); dest.writeInt(targetSdkVersion); dest.writeInt(enabled ? 1 : 0); dest.writeInt(enabledSetting); dest.writeInt(installLocation); dest.writeString(manageSpaceActivityName); dest.writeString(backupAgentName); dest.writeInt(descriptionRes); dest.writeInt(uiOptions); } public static final Parcelable.Creator CREATOR = new Parcelable.Creator() { public ApplicationInfo createFromParcel(Parcel source) { return new ApplicationInfo(source); } public ApplicationInfo[] newArray(int size) { return new ApplicationInfo[size]; } }; private ApplicationInfo(Parcel source) { super(source); taskAffinity = source.readString(); permission = source.readString(); processName = source.readString(); className = source.readString(); theme = source.readInt(); flags = source.readInt(); requiresSmallestWidthDp = source.readInt(); compatibleWidthLimitDp = source.readInt(); largestWidthLimitDp = source.readInt(); sourceDir = source.readString(); publicSourceDir = source.readString(); nativeLibraryDir = source.readString(); resourceDirs = source.readStringArray(); sharedLibraryFiles = source.readStringArray(); dataDir = source.readString(); uid = source.readInt(); targetSdkVersion = source.readInt(); enabled = source.readInt() != 0; enabledSetting = source.readInt(); installLocation = source.readInt(); manageSpaceActivityName = source.readString(); backupAgentName = source.readString(); descriptionRes = source.readInt(); uiOptions = source.readInt(); } /** * Retrieve the textual description of the application. This * will call back on the given PackageManager to load the description from * the application. * * @param pm A PackageManager from which the label can be loaded; usually * the PackageManager from which you originally retrieved this item. * * @return Returns a CharSequence containing the application's description. * If there is no description, null is returned. */ public CharSequence loadDescription(PackageManager pm) { if (descriptionRes != 0) { CharSequence label = pm.getText(packageName, descriptionRes, this); if (label != null) { return label; } } return null; } /** * Disable compatibility mode * * @hide */ public void disableCompatibilityMode() { flags |= (FLAG_SUPPORTS_LARGE_SCREENS | FLAG_SUPPORTS_NORMAL_SCREENS | FLAG_SUPPORTS_SMALL_SCREENS | FLAG_RESIZEABLE_FOR_SCREENS | FLAG_SUPPORTS_SCREEN_DENSITIES | FLAG_SUPPORTS_XLARGE_SCREENS); } /** * @hide */ @Override protected Drawable loadDefaultIcon(PackageManager pm) { if ((flags & FLAG_EXTERNAL_STORAGE) != 0 && isPackageUnavailable(pm)) { return Resources.getSystem().getDrawable( com.android.internal.R.drawable.sym_app_on_sd_unavailable_icon); } return pm.getDefaultActivityIcon(); } private boolean isPackageUnavailable(PackageManager pm) { try { return pm.getPackageInfo(packageName, 0) == null; } catch (NameNotFoundException ex) { return true; } } /** * @hide */ @Override protected ApplicationInfo getApplicationInfo() { return this; } }


PackageItemInfo.java源码:

/*
 * Copyright (C) 2007 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.content.res.XmlResourceParser;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Parcel;
import android.text.TextUtils;
import android.util.Printer;

import java.text.Collator;
import java.util.Comparator;

/**
 * Base class containing information common to all package items held by
 * the package manager.  This provides a very common basic set of attributes:
 * a label, icon, and meta-data.  This class is not intended
 * to be used by itself; it is simply here to share common definitions
 * between all items returned by the package manager.  As such, it does not
 * itself implement Parcelable, but does provide convenience methods to assist
 * in the implementation of Parcelable in subclasses.
 */
public class PackageItemInfo {
    /**
     * Public name of this item. From the "android:name" attribute.
     */
    public String name;
    
    /**
     * Name of the package that this item is in.
     */
    public String packageName;
    
    /**
     * A string resource identifier (in the package's resources) of this
     * component's label.  From the "label" attribute or, if not set, 0.
     */
    public int labelRes;
    
    /**
     * The string provided in the AndroidManifest file, if any.  You
     * probably don't want to use this.  You probably want
     * {@link PackageManager#getApplicationLabel}
     */
    public CharSequence nonLocalizedLabel;
    
    /**
     * A drawable resource identifier (in the package's resources) of this
     * component's icon.  From the "icon" attribute or, if not set, 0.
     */
    public int icon;
    
    /**
     * A drawable resource identifier (in the package's resources) of this
     * component's logo. Logos may be larger/wider than icons and are
     * displayed by certain UI elements in place of a name or name/icon
     * combination. From the "logo" attribute or, if not set, 0. 
     */
    public int logo;
    
    /**
     * Additional meta-data associated with this component.  This field
     * will only be filled in if you set the
     * {@link PackageManager#GET_META_DATA} flag when requesting the info.
     */
    public Bundle metaData;
    
    public PackageItemInfo() {
    }

    public PackageItemInfo(PackageItemInfo orig) {
        name = orig.name;
        if (name != null) name = name.trim();
        packageName = orig.packageName;
        labelRes = orig.labelRes;
        nonLocalizedLabel = orig.nonLocalizedLabel;
        if (nonLocalizedLabel != null) nonLocalizedLabel = nonLocalizedLabel.toString().trim();
        icon = orig.icon;
        logo = orig.logo;
        metaData = orig.metaData;
    }

    /**
     * Retrieve the current textual label associated with this item.  This
     * will call back on the given PackageManager to load the label from
     * the application.
     * 
     * @param pm A PackageManager from which the label can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * 
     * @return Returns a CharSequence containing the item's label.  If the
     * item does not have a label, its name is returned.
     */
    public CharSequence loadLabel(PackageManager pm) {
        if (nonLocalizedLabel != null) {
            return nonLocalizedLabel;
        }
        if (labelRes != 0) {
            CharSequence label = pm.getText(packageName, labelRes, getApplicationInfo());
            if (label != null) {
                return label.toString().trim();
            }
        }
        if (name != null) {
            return name;
        }
        return packageName;
    }
    
    /**
     * Retrieve the current graphical icon associated with this item.  This
     * will call back on the given PackageManager to load the icon from
     * the application.
     * 
     * @param pm A PackageManager from which the icon can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * 
     * @return Returns a Drawable containing the item's icon.  If the
     * item does not have an icon, the item's default icon is returned
     * such as the default activity icon.
     */
    public Drawable loadIcon(PackageManager pm) {
        if (icon != 0) {
            Drawable dr = pm.getDrawable(packageName, icon, getApplicationInfo());
            if (dr != null) {
                return dr;
            }
        }
        return loadDefaultIcon(pm);
    }
    
    /**
     * Retrieve the default graphical icon associated with this item.
     * 
     * @param pm A PackageManager from which the icon can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * 
     * @return Returns a Drawable containing the item's default icon
     * such as the default activity icon.
     * 
     * @hide
     */
    protected Drawable loadDefaultIcon(PackageManager pm) {
        return pm.getDefaultActivityIcon();
    }
    
    /**
     * Retrieve the current graphical logo associated with this item. This
     * will call back on the given PackageManager to load the logo from
     * the application.
     * 
     * @param pm A PackageManager from which the logo can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * 
     * @return Returns a Drawable containing the item's logo. If the item
     * does not have a logo, this method will return null.
     */
    public Drawable loadLogo(PackageManager pm) {
        if (logo != 0) {
            Drawable d = pm.getDrawable(packageName, logo, getApplicationInfo());
            if (d != null) {
                return d;
            }
        }
        return loadDefaultLogo(pm);
    }
    
    /**
     * Retrieve the default graphical logo associated with this item.
     * 
     * @param pm A PackageManager from which the logo can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * 
     * @return Returns a Drawable containing the item's default logo
     * or null if no default logo is available.
     * 
     * @hide
     */
    protected Drawable loadDefaultLogo(PackageManager pm) {
        return null;
    }
    
    /**
     * Load an XML resource attached to the meta-data of this item.  This will
     * retrieved the name meta-data entry, and if defined call back on the
     * given PackageManager to load its XML file from the application.
     * 
     * @param pm A PackageManager from which the XML can be loaded; usually
     * the PackageManager from which you originally retrieved this item.
     * @param name Name of the meta-date you would like to load.
     * 
     * @return Returns an XmlPullParser you can use to parse the XML file
     * assigned as the given meta-data.  If the meta-data name is not defined
     * or the XML resource could not be found, null is returned.
     */
    public XmlResourceParser loadXmlMetaData(PackageManager pm, String name) {
        if (metaData != null) {
            int resid = metaData.getInt(name);
            if (resid != 0) {
                return pm.getXml(packageName, resid, getApplicationInfo());
            }
        }
        return null;
    }

    protected void dumpFront(Printer pw, String prefix) {
        if (name != null) {
            pw.println(prefix + "name=" + name);
        }
        pw.println(prefix + "packageName=" + packageName);
        if (labelRes != 0 || nonLocalizedLabel != null || icon != 0) {
            pw.println(prefix + "labelRes=0x" + Integer.toHexString(labelRes)
                    + " nonLocalizedLabel=" + nonLocalizedLabel
                    + " icon=0x" + Integer.toHexString(icon));
        }
    }
    
    protected void dumpBack(Printer pw, String prefix) {
        // no back here
    }
    
    public void writeToParcel(Parcel dest, int parcelableFlags) {
        dest.writeString(name);
        dest.writeString(packageName);
        dest.writeInt(labelRes);
        TextUtils.writeToParcel(nonLocalizedLabel, dest, parcelableFlags);
        dest.writeInt(icon);
        dest.writeInt(logo);
        dest.writeBundle(metaData);
    }
    
    protected PackageItemInfo(Parcel source) {
        name = source.readString();
        packageName = source.readString();
        labelRes = source.readInt();
        nonLocalizedLabel
                = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
        icon = source.readInt();
        logo = source.readInt();
        metaData = source.readBundle();
    }

    /**
     * Get the ApplicationInfo for the application to which this item belongs,
     * if available, otherwise returns null.
     * 
     * @return Returns the ApplicationInfo of this item, or null if not known.
     * 
     * @hide
     */
    protected ApplicationInfo getApplicationInfo() {
        return null;
    }

    public static class DisplayNameComparator
            implements Comparator {
        public DisplayNameComparator(PackageManager pm) {
            mPM = pm;
        }

        public final int compare(PackageItemInfo aa, PackageItemInfo ab) {
            CharSequence  sa = aa.loadLabel(mPM);
            if (sa == null) sa = aa.name;
            CharSequence  sb = ab.loadLabel(mPM);
            if (sb == null) sb = ab.name;
            return sCollator.compare(sa.toString(), sb.toString());
        }

        private final Collator   sCollator = Collator.getInstance();
        private PackageManager   mPM;
    }
}
示例:

AnroidManifest.xml如下:




    

    
        

        
            
                

                
            
        
    


解析代码:

PackageManager pkgmanager = mContext.getPackageManager();
        try {
            String packageName = mContext.getPackageName();
            PackageInfo packageInfo = pkgmanager.getPackageInfo(packageName, PackageManager.GET_UNINSTALLED_PACKAGES);
            String versionName = packageInfo.versionName;
            Log.v("YAN", "versionName:" + versionName);
            ApplicationInfo application = pkgmanager.getApplicationInfo(packageName, PackageManager.GET_META_DATA);
            Bundle metaData = application.metaData;
            String channel = metaData.getString("IFLYTEK_CHANNEL");
            Log.v("YAN", "channel name:" + channel);
            
        } catch (NameNotFoundException e) {
            Log.v("YAN", "channel name exception:" + e.getMessage());
            e.printStackTrace();
        }


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