Detect hOme screen

public class DetectHomeScreen {
    private static List<String> homePackageNamesCache;
 
    public static List<String> homePackageName(Context context){
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_HOME);
        List<ResolveInfo> info = context.getPackageManager().queryIntentActivities(intent, 0);
        List<String> homes = new ArrayList<String>(info.size());
        for(int i=0; i<info.size(); i++){
            homes.add(info.get(i).activityInfo.packageName);
        }
        homes.add(DetectHomeScreen.class.getPackage().getName());
        return homes;
    }
 
    public static boolean isHomeRunning(Context context){
        if (homePackageNamesCache==null)
            homePackageNamesCache = homePackageName(context);
        return isHomeRunning(context, homePackageNamesCache);
    }
 
    public static boolean isHomeRunning(Context context, List<String> homePackages){
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        String topPackage = am.getRunningTasks(1).get(0).topActivity.getPackageName();
        return homePackages.contains(topPackage);
    }
}