Android学习笔记——Handler（二）

对比请看http://blog.sina.com.cn/s/blog_78c913e30100uqmf.html

以下代码是MainActivity.java中的代码

package com.example.handlertest;
 
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
 
public class MainActivity extends Activity {
 
    private Handler handler = new Handler();
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        setContentView(R.layout.activity_main);
        handler.post(r);
        //Thread t = new Thread(r);
        //t.start();
        System.out.println("activity--->"+ Thread.currentThread().getId());
        System.out.println("activityname--->"+ Thread.currentThread().getName());
    }
 
    Runnable r = new Runnable(){
        public void run() {
            System.out.println("handler--->"+ Thread.currentThread().getId());
            System.out.println("handlername--->"+ Thread.currentThread().getName());
            try{
                Thread.sleep(10000);
            }
            catch (InterruptedException e)
            {
                e.printStackTrace();
            }
        }
    };
}

以下代码是activity_main.xml中的代码

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >
 
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
 
</LinearLayout>