Android判断当前应用程序处于前台还是后台

/**     *判断当前应用程序处于前台还是后台     */    public static boolean isApplicationBroughtToBackground(final Context context){        ActivityManager am = (ActivityManager) context.getSystemService (Context.ACTIVITY_SERVICE);        List<RunningTaskInfo> tasks = am.getRunningTasks (1);        if (!tasks.isEmpty ()) {            ComponentName topActivity = tasks.get (0).topActivity;            if (!topActivity.getPackageName ().equals (context.getPackageName ())) { return true; }        }        return false;    }