android实现多线程

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package cd.edu.app;import android.app.Activity;import android.os.Bundle;import android.os.HandlerThread;import android.os.Message;import cn.edu.subclass.MyHandler;public class AndroidThreadActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        HandlerThread handThread=new HandlerThread("app");        handThread.start();                MyHandler myHand=new MyHandler(handThread.getLooper());        Message msg=myHand.obtainMessage();        msg.sendToTarget();               System.out.println(Thread.currentThread().getName());       }      }

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package cn.edu.subclass;import android.os.*;public class MyHandler extends Handler{public MyHandler(Looper loop){super(loop);}public void handleMessage(Message message){System.out.println(Thread.currentThread().getName());}}

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