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;
    }

要获得所有已安装的应用程序，您可以使用包管理器

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

要运行一个应用程序，你可以使用它的包名

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

欲了解更多细节，请阅读这个博客http://codebucket.co.in/android-get-list-of-all-installed-apps/

我需要过滤掉用户并不真正使用的系统应用程序(例如。“com.qualcomm。服务”，“更新服务”等)。最后，我添加了另一个条件来过滤应用程序列表。我只是检查了应用程序是否有“启动意图”。

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);
            }

        }

下面是使用PackageManager的一种更简洁的方式

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() 

更多信息请点击这里http://qtcstation.com/2011/02/how-to-launch-another-app-from-your-app/

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;
    }

过滤基于系统的应用程序:

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