Android 如何檢測一個服務是否還在運行?

public static  boolean isServiceStarted(Context context,String PackageName){    boolean isStarted =false;    try{    int intGetTastCounter = 1000;    ActivityManager mActivityManager =        (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);    List<ActivityManager.RunningServiceInfo> mRunningService =         mActivityManager.getRunningServices(intGetTastCounter);    for (ActivityManager.RunningServiceInfo amService : mRunningService){        if(0 == amService.service.getPackageName().compareTo(PackageName)){        isStarted = true;        break;        }    }    }catch(SecurityException e){    e.printStackTrace();    }                return isStarted;                }