判断服务是否运行

public static boolean isServiceRun(Context context,String serviceName){
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

List<RunningServiceInfo> rsis = am.getRunningServices(300);

for (RunningServiceInfo runningServiceInfo : rsis) {
if(runningServiceInfo.service.getClassName().equals(serviceName)){
return true;
}
}

return false;
}