AndroidのHandler与Message

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1.HandlerThread+Handler+Message

package com.bvin.study.message;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Handler.Callback;import android.os.HandlerThread;import android.os.Message;public class MainActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        HandlerThread ht = new HandlerThread("HandlerThread");        ht.start();                Handler handler = new Handler(ht.getLooper(),new Callback(){            @Override            public boolean handleMessage(Message msg) {                // TODO Auto-generated method stub                setTitle((String)msg.obj);                return true;            }                    });                Message msg = handler.obtainMessage();        msg.obj = "就是我";        msg.sendToTarget();//发送至生成嘴个消息的Handler    }}