Android异步线程与Bundle消息传递

package com.lzr;/////验证异步线程/////先修改AndroidManifest.xml来默认启动HanderTest2这个Activity////使用Looper来启动另一个线程实现handler////HandlerThread对象用法////Bundle对象用法import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.HandlerThread;import android.os.Looper;import android.os.Message;public class Handlertest2 extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.main);//打印当前线程的IDSystem.out.println("Activity--->"+Thread.currentThread().getId());///生成一个HandlerThread线程对象，实现使用Looper来处理消息队列的功能，这个类由Android提供HandlerThread handlerThread=new HandlerThread("handler_thread");////在使用HandlerThread的getLooper()方法前，必须先调用start()启动线程handlerThread.start();    ////MyHandler myHandler=new MyHandler(handlerThread.getLooper());Message msg=myHandler.obtainMessage();  ////生成Bundle对象Bundle b=new Bundle();b.putInt("age", 25);b.putString("name", "make");msg.setData(b);////将msg发送到目标对象，所谓目标对象，就是生成该对象的handler对象，如myHandlermsg.sendToTarget();///调用当生成的对象发送给handleMessage(Message msg)}   class MyHandler extends Handler{            public MyHandler()   {}   ////使用looper来使Handler从另外一个线程中的消息队列中取得数据   public MyHandler(Looper looper)   {   super(looper);   }@Overridepublic void handleMessage(Message msg) {// TODO Auto-generated method stub///super.handleMessage(msg);Bundle b=msg.getData();int age=b.getInt("age");String name=b.getString("name");System.out.println("age is"+age+" name is"+name);System.out.println("handler--->"+Thread.currentThread().getId());System.out.println("handlerMessage");}            }   }
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