Android 如何检测一个服务是否还在运行?

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;
}