Android-----判断是否有服务运行

 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;     }