代码：
package mars.handler;
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 {
@Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main); //打印了当前线程的ID System.out.println("Activity-->" + Thread.currentThread().getId()); //生成一个HandlerThread对象，实现了使用Looper来处理消息队列的功能，这个类由Android应用程序框架提供 HandlerThread handlerThread = new HandlerThread("handler_thread"); //在使用HandlerThread的getLooper()方法之前，必须先调用该类的start(); handlerThread.start(); MyHandler myHandler = new MyHandler(handlerThread.getLooper()); Message msg = myHandler.obtainMessage(); //将msg发送到目标对象，所谓的目标对象，就是生成该msg对象的handler对象 Bundle b = new Bundle(); b.putInt("age", 20); b.putString("name", "Jhon"); msg.setData(b); msg.sendToTarget(); } class MyHandler extends Handler{ public MyHandler(){ } public MyHandler(Looper looper){ super(looper); } @Override public void handleMessage(Message 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"); } }}程序非原创
