Android AsynTask学习笔记_asyntast原理-优快云博客

本文介绍了一个简单的Android应用程序，该应用使用了AsyncTask来执行后台任务。通过MainActivity中的按钮触发，创建并启动了一个名为MyAsynTast的AsyncTask实例，该实例执行了一个名为Net的类中的网络操作。

Net.java

package com.ldci.myasyntask;

public class Net {

	public void net() {
		
		try {
			Thread.sleep(1000 * 5);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
	}
}

MyAsynTask.java

package com.ldci.myasyntask;

import android.os.AsyncTask;

public class MyAsynTast extends AsyncTask<Void, Void, Void> {

	@Override
	protected Void doInBackground(Void... params) {
		
		Net net1 = new Net();
		net1.net();
		
		return null;
	}

	
}

MainActivity.java

package com.ldci.myasyntask;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener{

	
	
	private Button btn1;
	private Button btn2;
	
		
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btn1 = (Button)findViewById(R.id.button1);
		btn2 = (Button)findViewById(R.id.button2);
		
		btn1.setOnClickListener(this);
		btn2.setOnClickListener(this);
	}



	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.button1:
			//使用AsynTask异步操作
			MyAsynTast myAsynTast = new MyAsynTast();
			myAsynTast.execute();
			
			
			break;
		case R.id.button2:
			System.out.println("dddd");
			break;

		default:
			break;
		}
		
	}



}