继续谈android中Handler（一）

来源：互联网发布：php mysql增删改查编辑：程序博客网时间：2024/06/01 08:50

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() {@Overridepublic 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