如何收集来自IntentService和更新Android的UI信息

import android.os.IBinder;//引入相关包
//继承自Service的子类
public class MyService extends Service{
CommandReceiver cmdReceiver;
boolean flag;
@Override
public void onCreate() {//重写onCreate方法
flag = true;
cmdReceiver = new CommandReceiver();
super.onCreate();
}
@Override
public IBinder onBind(Intent intent) {//重写onBind方法
// TODO Auto-generated method stub
return null;
}