Android应用程序管理系列(四)—— packagemanager flags 与 packageInfo 

Android PackageInfo 应用程序信息

1、简述

1 官方解析为      Overall information about the contents of a package.  This corresponds to all of the information collected from AndroidManifest.xml.    获取应用程序所有的包信息，也包括从清单文件AndroidManifest.xml中获取的信息

2、获取PackageInfo

2.1 、获取手机上安装所有程序对应的 PackageInfo

//参数 0 是过滤信息 传入不同的数值，会获取不同的 应用程序信息 下面会具体分析 List<PackageInfo> installedPackageList = packageManager.getInstalledPackages(0);

2.2 、获取指定应用程序对应的 PackageInfo

//参数 appPackageName 是对应应用程序的 包名 可通过 ApplicationInfo来获取PackageInfo packageInfo = packageManager.getPackageInfo(appPackageName, 0);

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Android PackageManager Flags 包管理者信息说明

1、简述

1、获取包管理者     PackageManager packageManager = this.getPackageManager();2、可以通过包管理者来获取packageInfo    //获取手机上安装的所有应用程序的包信息    List<PackageInfo> installedPackageList = packageManager.getInstalledPackages(0);    //获取指定包名应用程序的包信息    PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0);3、上述在获取 PackageInfo时传入参数为 0，就是过滤条件   在PackageManager中定义了多个过滤条件 ，传入的过滤条件不同，获取到的应用程序信息不同，   例如上术传入的 过滤条件为 0 ，就是获取的 PackageInfo中 只包含 应用程序的版本信息（VersionCode,versionName）

2、PackageManager Flags概述

2.1 PackageManager.GET_ACTIVITIES

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_ACTIVITIES，那么我们获取的PackageInfo中就包含着 application标签下的所有的activity信息

//获取指定程序的application标签下的所有的activityPackageInfo packageInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);ActivityInfo[] activities = packageInfo.activities;if (activities != null && activities.length != 0) {     for (int i = 0; i < activities.length; i++) {          Log.d("packageInfo -activities", "| " + activities[i]);     }}

2.2 PackageManager.GET_CONFIGURATIONS

    /**     * {@link PackageInfo} flag: return information about     * hardware preferences in     * {@link PackageInfo#configPreferences PackageInfo.configPreferences},     * and requested features in {@link PackageInfo#reqFeatures} and     * {@link PackageInfo#featureGroups}.     */    public static final int GET_CONFIGURATIONS = 0x00004000;

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_CONFIGURATIONS，那么我们获取清单文件中所所有的configurations 信息

List<PackageInfo> list6 = packageManager.getInstalledPackages(PackageManager.GET_CONFIGURATIONS);for (PackageInfo packageInfo : list6) {     // 获取 清单文件中的所有的  Configuration 配制信息      ConfigurationInfo[] configPreferences = packageInfo.configPreferences;     if (configPreferences != null) {          for (int i = 0; i < configPreferences.length; i++) {               ConfigurationInfo configPreference = configPreferences[i];                Log.i("ConfigurationInfo-", "ConfigurationInfo: " + configPreference);          }     }}

2.3 PackageManager.GET_CONFIGURATIONS

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_GIDS，那么我们获取到应用程序所有的 gid信息

List<PackageInfo> list7 = packageManager.getInstalledPackages(PackageManager.GET_GIDS);if (list7 != null) {    for (PackageInfo packageInfo : list7) {          int[] gids = packageInfo.gids;          if (gids != null && gids.length != 0) {               for (int i = 0; i < gids.length; i++) {                        Log.i("packageInfo-", "gids:" + i + "=" + gids[i]);                }          }     }}

2.4 PackageManager.GET_CONFIGURATIONS

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_INSTRUMENTATION，那么我们获取到应用程序所有的 清单中配制的所有的 Instrumentation 信息

List<PackageInfo> list8 = packageManager.getInstalledPackages(PackageManager.GET_INSTRUMENTATION);if (list8 != null) {    for (PackageInfo packageInfo : list8) {        InstrumentationInfo[] instrumentation = packageInfo.instrumentation;        if (instrumentation != null) {            for (InstrumentationInfo instrumentationInfo : instrumentation) {                Log.i("instrumentationInfo-", "instrumentationInfo " + instrumentationInfo);            }        }    }}

2.5 PackageManager.GET_INTENT_FILTERS

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_INTENT_FILTERS，那么我们可以获取到清单文件下配制的activity 中的intent-filter 过滤条件信息

List<PackageInfo> list9 = packageManager.getInstalledPackages(PackageManager.GET_INTENT_FILTERS);if (list9 != null) {    for (PackageInfo packageInfo : list9) {        FeatureInfo[] reqFeatures = packageInfo.reqFeatures;        if (reqFeatures != null && reqFeatures.length != 0) {            for (int i = 0; i < reqFeatures.length; i++) {                Log.i("packageInfo-", "reqFeatures:" + i + "=" + reqFeatures[i]);            }        }    }}

2.6 PackageManager.GET_SIGNATURES

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_SIGNATURES，那么我们可以获取到应用程序的签名信息

List<PackageInfo> list10 = packageManager.getInstalledPackages(PackageManager.GET_SIGNATURES);if (list10 != null) {    for (PackageInfo packageInfo : list10) {        Signature[] signatures = packageInfo.signatures;        if (signatures != null && signatures.length != 0) {            for (int i = 0; i < signatures.length; i++) {                Log.i("packageInfo-", "signatures:" + i + "=" + signatures[i]);            }        }    }}

2.7 PackageManager.GET_META_DATA

/** * {@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;

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_META_DATA ，那么我们可以获取到应用程序的清单文件中配制的所有的 meta-data 标签信息

List<PackageInfo> list10 = packageManager.getInstalledPackages(PackageManager.GET_META_DATA);

2.8 PackageManager.GET_PERMISSIONS

/**
 * {@link PackageInfo} flag: return information about
 * permissions in the package in
 * {@link PackageInfo#permissions}.
 */
public static final int GET_PERMISSIONS               = 0x00001000;


也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_PERMISSIONS ，那么我们可以获取到应用程序的清单文件中配制的所有的 权限信息

List<PackageInfo> list10 = packageManager.getInstalledPackages(PackageManager.GET_PERMISSIONS);if (list10 != null) {    for (PackageInfo packageInfo : list10) {        String[] requestedPermissions = packageInfo.requestedPermissions;        if (requestedPermissions != null && requestedPermissions.length != 0) {            for (int i = 0; i < requestedPermissions.length; i++) {                Log.i("packageInfo-", "requestedPermissions:" + i + "=" + requestedPermissions[i]);            }        }    }}

2.9 PackageManager.GET_PROVIDERS

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_PROVIDERS ，那么我们可以获取到应用程序的清单文件中配制的所有的 内容提供者

List<PackageInfo> list13 = packageManager.getInstalledPackages(PackageManager.GET_PROVIDERS);if (list13 != null) {    for (PackageInfo packageInfo : list13) {        ProviderInfo[] providers = packageInfo.providers;        if (providers != null) {            for (ProviderInfo provider : providers) {            }        }    }}

2.10 PackageManager.GET_SERVICES

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_SERVICES ，那么我们可以获取到应用程序的清单文件中配制的所有的 服务

List<PackageInfo> installedPackageList2 = packageManager.getInstalledPackages(PackageManager.GET_SERVICES);for (PackageInfo packageInfo : installedPackageList2) {    // 获取 <application>标签下的所有services标签    ServiceInfo[] services = packageInfo.services;    if (services != null && services.length != 0) {        for (int i = 0; i < services.length; i++) {            Log.i("packageInfo-services", "services:" + i + "=" + services[i]);        }    }}

2.11 PackageManager.GET_RECEIVERS

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

也就是当在获取PackageInfo时，传入的过滤条件为 PackageManager.GET_RECEIVERS ，那么我们可以获取到应用程序的清单文件中配制的所有的 广播接收者

List<PackageInfo> installedPackageList3 = packageManager.getInstalledPackages(PackageManager.GET_RECEIVERS);for (PackageInfo packageInfo : installedPackageList3) {    // 获取 <application>标签下的所有receive标签    ActivityInfo[] receivers = packageInfo.receivers;    if (receivers != null && receivers.length != 0) {        for (int i = 0; i < receivers.length; i++) {            Log.i("packageInfo-", "receivers:" + i + "=" + receivers[i]);        }    }}

2.12 PackageManager.GET_SHARED_LIBRARY_FILES

/** * {@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;

List<PackageInfo> list = packageManager.getInstalledPackages(PackageManager.GET_SHARED_LIBRARY_FILES);

2.13 PackageManager.GET_SHARED_LIBRARY_FILES

/** * {@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;

List<PackageInfo> list = packageManager.getInstalledPackages(PackageManager.GET_SHARED_LIBRARY_FILES);