Android 判断某个服务（service）是否运行

/**  *  *  * @param mContext  * @param serviceName  *      是包名+服务的类名（例如：net.loonggg.testbackstage.TestService）  * @return true代表正在运行，false代表服务没有正在运行  */ public boolean isServiceWork(Context mContext, String serviceName) {   boolean isWork = false;   ActivityManager myAM = (ActivityManager) mContext       .getSystemService(Context.ACTIVITY_SERVICE);   List<RunningServiceInfo> myList = myAM.getRunningServices(40);   if (myList.size() <= 0) {     return false;   }   for (int i = 0; i < myList.size(); i++) {     String mName = myList.get(i).service.getClassName().toString();     if (mName.equals(serviceName)) {       isWork = true;       break;     }   }   return isWork; }