如何获取已安装的Android应用程序列表并选择一个运行

Question

本周早些时候我问了一个类似的问题，但我仍然不了解如何获取所有已安装应用程序的列表，然后选择一个运行。

我试过了：

Intent intent = new Intent(ACTION_MAIN);
intent.addCategory(CATEGORY_LAUNCHER);

，这只显示预安装的应用程序或可以运行ACTION_MAIN Intent类型的应用程序。

我也知道我可以使用PackageManager来获取所有已安装的应用程序，但是如何使用它来运行特定的应用程序呢？

Answer 1

这是使用PackageManager

的更简洁方法

final PackageManager pm = getPackageManager();
//get a list of installed apps.
List<ApplicationInfo> packages = pm.getInstalledApplications(PackageManager.GET_META_DATA);

for (ApplicationInfo packageInfo : packages) {
    Log.d(TAG, "Installed package :" + packageInfo.packageName);
    Log.d(TAG, "Source dir : " + packageInfo.sourceDir);
    Log.d(TAG, "Launch Activity :" + pm.getLaunchIntentForPackage(packageInfo.packageName)); 
}
// the getLaunchIntentForPackage returns an intent that you can use with startActivity() 

此处有更多信息http://qtcstation.com/2011/02/how-to-launch-another-app-from-your-app/

Answer 2

以下是获取Android上安装的活动/应用程序列表的代码：

Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities( mainIntent, 0);

您将获得ResolveInfo中的所有必要数据以启动应用程序。您可以查看ResolveInfo javadoc here。

Answer 3

过滤系统应用的另一种方法（使用上面的示例）：

/**
 * Return whether the given PackgeInfo represents a system package or not.
 * User-installed packages (Market or otherwise) should not be denoted as
 * system packages.
 * 
 * @param pkgInfo
 * @return
 */
private boolean isSystemPackage(PackageInfo pkgInfo) {
    return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
}

Answer 4

这是一个很好的例子：

class PInfo {
    private String appname = "";
    private String pname = "";
    private String versionName = "";
    private int versionCode = 0;
    private Drawable icon;
    private void prettyPrint() {
        Log.v(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode);
    }
}

private ArrayList<PInfo> getPackages() {
    ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */
    final int max = apps.size();
    for (int i=0; i<max; i++) {
        apps.get(i).prettyPrint();
    }
    return apps;
}

private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {
    ArrayList<PInfo> res = new ArrayList<PInfo>();        
    List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
    for(int i=0;i<packs.size();i++) {
        PackageInfo p = packs.get(i);
        if ((!getSysPackages) && (p.versionName == null)) {
            continue ;
        }
        PInfo newInfo = new PInfo();
        newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
        newInfo.pname = p.packageName;
        newInfo.versionName = p.versionName;
        newInfo.versionCode = p.versionCode;
        newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());
        res.add(newInfo);
    }
    return res; 
}

Answer 5

获取已安装的非系统应用列表

public static void installedApps()
{
    List<PackageInfo> packList = getPackageManager().getInstalledPackages(0);
    for (int i=0; i < packList.size(); i++)
    {
        PackageInfo packInfo = packList.get(i);
        if (  (packInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0)
        {
            String appName = packInfo.applicationInfo.loadLabel(getPackageManager()).toString();
            Log.e("App № " + Integer.toString(i), appName);
        }
    }
}

Answer 6

要过滤基于系统的应用：

private boolean isSystemPackage(ResolveInfo ri) {
    return (ri.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
}

Answer 7

要获取所有已安装的应用，您可以使用Package Manager ..

    List<PackageInfo> apps = getPackageManager().getInstalledPackages(0);

要运行，您可以使用包名称

Intent launchApp = getPackageManager().getLaunchIntentForPackage(“package name”)
startActivity(launchApp);

有关详情，请参阅此博客http://codebucket.co.in/android-get-list-of-all-installed-apps/

Answer 8

您可以使用以下代码查找Android设备中已安装应用的列表，“packageInfo”包含已安装的应用信息 在设备中。我们可以为安装的应用程序检索Intent packageinfo对象和使用startactivity（intent），可以启动 应用。由Listee组织UI的方式取决于您 或Gridview。所以基于位置的点击事件，你可以追溯意图 对象和开始活动意图。

final PackageManager pm = getPackageManager();

List<ApplicationInfo> packages = pm.getInstalledApplications(PackageManager.GET_META_DATA);


for (ApplicationInfo packageInfo : packages) 

{
 if(pm.getLaunchIntentForPackage(packageInfo.packageName)!= null &&   

                   !pm.getLaunchIntentForPackage(packageInfo.packageName).equals(""))


{

    System.out.println("Package Name :" + packageInfo.packageName);

    System.out.println("Launch Intent For Package :"   +  
                  pm.getLaunchIntentForPackage(packageInfo.packageName));

    System.out.println("Application Label :"   + pm.getApplicationLabel(packageInfo));

    System.out.println("Application Label :"   + 
                           pm.getApplicationIcon(packageInfo.packageName).toString());

    System.out.println("i : "+i);

    /*if(i==2)

    {
         startActivity(pm.getLaunchIntentForPackage(packageInfo.packageName));

     break;

    }*/

    i++;

}
}

Answer 9

如果一个包中有多个启动器，则代码出现问题。例如：在用于LG的LG Optimus Facebook，用于LG的MySpace，用于LG的Twitter包含一个包名称SNS，如果您使用上面的SNS将重复。经过几个小时的研究，我得到了以下代码。似乎运作良好。

private List<String> getInstalledComponentList()
            throws NameNotFoundException {
        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        List<ResolveInfo> ril = getPackageManager().queryIntentActivities(mainIntent, 0);
        List<String> componentList = new ArrayList<String>();
        String name = null;

        for (ResolveInfo ri : ril) {
            if (ri.activityInfo != null) {
                Resources res = getPackageManager().getResourcesForApplication(ri.activityInfo.applicationInfo);
                if (ri.activityInfo.labelRes != 0) {
                    name = res.getString(ri.activityInfo.labelRes);
                } else {
                    name = ri.activityInfo.applicationInfo.loadLabel(
                            getPackageManager()).toString();
                }
                componentList.add(name);
            }
        }
        return componentList;
    }

Answer 10

我要求过滤掉用户并不真正使用的系统应用程序（例如“com.qualcomm.service”，“update services”等）。最后，我添加了另一个条件来过滤应用列表。我刚检查了该应用是否具有'启动器意图'。

因此，结果代码看起来像......

PackageManager pm = getPackageManager();
        List<ApplicationInfo> apps = pm.getInstalledApplications(PackageManager.GET_GIDS);

        for (ApplicationInfo app : apps) {
            if(pm.getLaunchIntentForPackage(app.packageName) != null) {
                // apps with launcher intent
                if((app.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0) {
                    // updated system apps

                } else if ((app.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
                    // system apps

                } else {
                    // user installed apps

                }
                appsList.add(app);
            }

        }

Answer 11

@Jas： 我不再有那个代码，但我发现了一些接近的东西。我已经这样做来搜索我的应用程序的“组件”，它们只是具有给定类别的活动。

private List<String> getInstalledComponentList() {
    Intent componentSearchIntent = new Intent();
    componentSearchIntent.addCategory(Constants.COMPONENTS_INTENT_CATEGORY);
    componentSearchIntent.setAction(Constants.COMPONENTS_INTENT_ACTION_DEFAULT);
    List<ResolveInfo> ril = getPackageManager().queryIntentActivities(componentSearchIntent, PackageManager.MATCH_DEFAULT_ONLY);
    List<String> componentList = new ArrayList<String>();
    Log.d(LOG_TAG, "Search for installed components found " + ril.size() + " matches.");
    for (ResolveInfo ri : ril) {
        if (ri.activityInfo != null) {
            componentList.add(ri.activityInfo.packageName);// + ri.activityInfo.name);
            Log.d(LOG_TAG, "Found installed: " + componentList.get(componentList.size()-1));
        }
    }
    return componentList;
}

我已经评论了它获取活动名称的部分，但它非常简单。

Answer 12

成功过滤系统应用程序的清洁解决方案

此解决方案背后的理念是每个系统应用程序的主要活动都没有自定义活动图标。这种方法给了我一个很好的结果：

 public static Set<PackageInfo> getInstalledApps(Context ctx) {
    final PackageManager packageManager = ctx.getPackageManager();

    final List<PackageInfo> allInstalledPackages = packageManager.getInstalledPackages(PackageManager.GET_META_DATA);
    final Set<PackageInfo> filteredPackages = new HashSet();

    Drawable defaultActivityIcon = packageManager.getDefaultActivityIcon();

    for(PackageInfo each : allInstalledPackages) {
        if(ctx.getPackageName().equals(each.packageName)) {
            continue;  // skip own app
        }

        try {
            // add only apps with application icon
            Intent intentOfStartActivity = packageManager.getLaunchIntentForPackage(each.packageName);
            if(intentOfStartActivity == null)
                continue;

            Drawable applicationIcon = packageManager.getActivityIcon(intentOfStartActivity);
            if(applicationIcon != null && !defaultActivityIcon.equals(applicationIcon)) {
                filteredPackages.add(each);
            }
        } catch (PackageManager.NameNotFoundException e) {
            Log.i("MyTag", "Unknown package name " + each.packageName);
        }
    }

    return filteredPackages;
}

Answer 13

private static boolean isThisASystemPackage(Context context, PackageInfo  packageInfo ) {
        try {
            PackageInfo sys = context.getPackageManager().getPackageInfo("android", PackageManager.GET_SIGNATURES);
            return (packageInfo != null && packageInfo.signatures != null &&
                    sys.signatures[0].equals(packageInfo.signatures[0]));
        } catch (NameNotFoundException e) {
            return false;
        }
    }

Answer 14

获取所有应用：

    PackageManager pm = getContext().getPackageManager();
    List<ApplicationInfo> apps = pm.getInstalledApplications(0);

检查安装的应用程序是否打开：

if((app.flags & (ApplicationInfo.FLAG_UPDATED_SYSTEM_APP | ApplicationInfo.FLAG_SYSTEM)) > 0) {
                String app_package = app.packageName;
Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(app_package);
context.startActivity(launchIntent);

Answer 15

我有另一个解决方案：

ArrayList<AppInfo> myAppsToUpdate;

    // How to get the system and the user apps.
    public ArrayList<AppInfo> getAppsToUpdate() {

        PackageManager pm = App.getContext().getPackageManager();
        List<ApplicationInfo> installedApps = pm.getInstalledApplications(0);
        myAppsToUpdate = new ArrayList<AppInfo>();
        for (ApplicationInfo aInfo : installedApps) {

            if ((aInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
                // System apps 
            } else {
                // Users apps
                AppInfo appInfo = new AppInfo();
                appInfo.setAppName(aInfo.loadLabel(pm).toString());
                appInfo.setPackageName(aInfo.packageName);
                appInfo.setLaunchActivity(pm.getLaunchIntentForPackage(aInfo.packageName).toString());
                try {
                    PackageInfo info = pm.getPackageInfo(aInfo.packageName, 0);
                    appInfo.setVersionName(info.versionName.toString());
                    appInfo.setVersionCode("" + info.versionCode);
                    myAppsToUpdate.add(appInfo);
                } catch (NameNotFoundException e) {
                    Log.e("ERROR", "we could not get the user's apps");
                }

            }
        }
        return myAppsToUpdate;
    }

Answer 16

context.getPackageManager().getInstalledApplications(PackageManager.GET_META_DATA); 应该返回所有已安装应用程序的列表，但是在 android 11 中，它只会返回系统应用程序的列表。要获取所有应用程序（系统+用户）的列表，我们需要为该应用程序提供其他权限，即

<uses-permission android:name"android.permission.QUERY_ALL_PACKAGES">

Answer 17

你可以用这个：

PackageManager pm = getApplicationContext().getPackageManager();
                List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
                for (final ResolveInfo app : activityList) 
                {
                   if ((app.activityInfo.name).contains("facebook")) 
                   {
                     // facebook  
                   }

                   if ((app.activityInfo.name).contains("android.gm")) 
                   {
                     // gmail  
                   }

                   if ((app.activityInfo.name).contains("mms")) 
                   {
                     // android messaging app
                   }

                   if ((app.activityInfo.name).contains("com.android.bluetooth")) 
                   {
                     // android bluetooth  
                   }
                }

Answer 18

public static List<ApplicationInfo> getApplications(Context context) {
    return context.getPackageManager().getInstalledApplications(PackageManager.GET_META_DATA);
}

Answer 19

从Android 11（API级别30）开始，默认情况下大多数用户安装的应用程序都不可见。您必须静态声明要在清单中获取有关信息的应用和/或意图过滤器，如下所示：

<manifest>
    <queries>
        <!-- Explicit apps you know in advance about: -->
        <package android:name="com.example.this.app"/>
        <package android:name="com.example.this.other.app"/>

        <!-- Intent filter signatures that you are going to query: -->
        <intent>
            <action android:name="android.intent.action.SEND" />
            <data android:mimeType="image/jpeg" />
        </intent>
    </queries>
    
    ...
</manifest>

或者需要获得QUERY_ALL_PACKAGES权限。

完成上述操作后，此处的其他答案仍然适用。

在此处了解更多信息：

• The migration documentation
• The dedicated documentation page (has more information)
• The official blog post