安卓开发获取已安装的应用

/**
 * 获取已安装的应用的安装包
 * @author Jason
 *
 */
private class GetApksTask extends AsyncTask<Void, Void, List<App>> {

    @Override
    protected List<App> doInBackground(Void... params) {
        List<App> apps = new ArrayList<App>();

        PackageManager pm = getPackageManager();
        List<ApplicationInfo> applicationInfos = pm.getInstalledApplications(PackageManager.GET_META_DATA);
        for (ApplicationInfo applicationInfo : applicationInfos) {

            if ((applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0 && (applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) == 0) {
                // 非系统应用
                App app = new App();
                // 图标  
                app.setAppIcon(((BitmapDrawable) applicationInfo.loadIcon(pm)).getBitmap());
                // 应用程序名称  
                app.setAppName(applicationInfo.loadLabel(pm).toString());
                // 应用程序包名  
                app.setAppPackageName(applicationInfo.packageName);
                // 应用路径
                app.setPath(applicationInfo.publicSourceDir);
                apps.add(app); 
            }
        }
        return apps;
    }

    @Override
    protected void onPostExecute(List<App> apps) {
        super.onPostExecute(apps);

        appList.addAll(apps);
        mAppAdapter.notifyDataSetChanged();
        cancelProgress();
    }
}