android判斷某服務是否正在運行

/**         * 用來判斷服務是否運行.         * @param context         * @param className 判斷的服務名字         * @return true 在運行 false 不在運行         */       public static boolean isServiceRunning(Context mContext,String className) {            boolean isRunning = false; ActivityManager activityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);             List<ActivityManager.RunningServiceInfo> serviceList             = activityManager.getRunningServices(30);           if (!(serviceList.size()>0)) {                return false;            }            for (int i=0; i<serviceList.size(); i++) {                if (serviceList.get(i).service.getClassName().equals(className) == true) {                    isRunning = true;                    break;                }            }            return isRunning;        }