继续谈android中Handler（一）

1.其实可以理解Handler为主线程和另外的线程之间进行数据更新的东东，并且Handler在主线程中，并在Handler直接调用线程的run方法

package com.Handler02;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;

public class Handler02Activity extends Activity {
    /** Called when the activity is first created. */
	private Handler handler=new Handler();
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        handler.post(thread1);
        setContentView(R.layout.main);
      
		System.out.println("================Main==============="+Thread.currentThread().getId());
		System.out.println("============Main========="+Thread.currentThread().getName());
    }
    Runnable thread1=new Runnable() {
		
		@Override
		public void run() {
			System.out.println("======thread1==============="+Thread.currentThread().getId());
			System.out.println("========thread1============"+Thread.currentThread().getName());
			try {
				Thread.sleep(10000);
			} catch (Exception e) {
				// TODO: handle exception
			}
			
		}
	};
}

结果是主线程等待10s后才显示出来，并且线程ID