Androidの多线程之HandlerThread

1.Handler.post(Runnable),必须要有有Looper。

package com.bvin.study.thread;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    
    /*private Handler handler = new Handler(){

        @Override
        public void handleMessage(Message msg) {
            // TODO Auto-generated method stub
            super.handleMessage(msg);
            setTitle((String)msg.obj);
            
        }
        
        
        
    };*/
    private Handler handler = null;
    
    public int flag = 0;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /*Handler+HandlerThread*/
        HandlerThread handerThread = new HandlerThread("myHanderThread");//建立HandlerThread
        handerThread.start();//运行HandlerThread（一定要开始才能获取Looper.否则得到是空值）
        Looper looper = handerThread.getLooper();//获取消息循环
        handler = new Handler(handerThread.getLooper());//建立带消息循环的Handler
        handler.post(new WorkRun());//执行线程
        
        /*Thread+Runnable*/
        /*Thread th = new Thread(new WorkRun());
        th.start();*/
        
        Log.e("ID:"+Thread.currentThread().getId(), "MainThread is running");
        setContentView(R.layout.main);
        
    }
    
    
    private class WorkRun implements Runnable{

        @Override
        public void run() {
            // TODO Auto-generated method stub
            
            Log.e("ID:"+Thread.currentThread().getId(), "WorkThread is running");
            
            try {
                Thread.sleep(1000*6);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }
        
        
        
    }
}