Android判断Service是否运行

/**

        * 用来判断服务是否运行.

        * @param context

        * @param className 判断的服务名字

        * @return true 在运行 false 不在运行

        */

       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;

       }