PackageManager pm = getPackageManager();        List<PackageInfo> packages = pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);                for(PackageInfo packageInfo : packages){                        //应用图标            Drawable icon = packageInfo.applicationInfo.loadIcon(pm);                        //标题            CharSequence lable = packageInfo.applicationInfo.loadLabel(pm);                        //包名            String packageName = packageInfo.packageName;                    }