Get specified service is running

// get specified service is running
ActivityManager myManager=(ActivityManager)this.getSystemService(Context.ACTIVITY_SERVICE);
ArrayList runningService = (ArrayList) myManager.getRunningServices(30);
    for(int i = 0 ; i < runningservice.size();i++) {
        if(runningService.get(i). service .getClassName().toString().equals("com.xxx.RuningService")) {
            return true;
        }
    }
return false;