判断某个服务是否在运行

ActivityManager activityManager = (ActivityManager) context
                .getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningServiceInfo> serviceList = activityManager
                .getRunningServices(Integer.MAX_VALUE);
if (!(serviceList.size() > 0)) {
    return false;
}
for (int i = 0; i < serviceList.size(); i++) {
    if (serviceList.get(i).service.getClassName().equals(className) == true) {
        return true;
    }
}
return false;