实现在Android简单封装类似JQuery异步请求

在android开发中经常会使用异步请求数据，通常会使用handler或者AsyncTask去做，handler 配合message 使用起来比较麻烦，AsyncTask 线程池只允许128个线程工作，会有溢出的问题，（当然一般情况不会有那么多线程同时工作的）所以写了这个代码，还望高手指正！

 

package com.xbl.task;

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.URL;

import java.util.concurrent.Executor;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors

<P>import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.util.Log



public class JQuery {

 

 private static final String KEY = "key";

 private static String TAG = "JQuery";

 private static final int N = 5;// 5个工人 

 private static final Executor worker = Executors.newFixedThreadPool(N);// 线程池

 private static final Handler handler = new Handler(){

  @Override

  public void handleMessage(Message msg) {

   TaskListener listener = (TaskListener)msg.obj;

   Object result = msg.getData();

   if(listener !=null ){

    listener.callBack(result);

   }

   destory();

  }

 };

 

 private JQuery(){  

 }

 

 public static void execute(final String url,final TaskListener listener){

  worker.execute(new Runnable() {

   @Override

   public void run() {

    String result = null;

    try {

     result = WebUtil.get(url);

    } catch (Exception e) {

     Log.e(TAG, e.getMessage());

    }

    

    Message msg = new Message();

    Bundle data = new Bundle();

    data.putSerializable(KEY, result);

    msg.setData(data);

    msg.obj = listener;

    handler.sendMessage(msg);

   }

  });

 }

 

 //销毁线程

 private static void destory() {

  if (worker != null && worker instanceof ExecutorService) {

   ExecutorService es = (ExecutorService) worker;

   if (!es.isShutdown()) {

    es.shutdown();

   }

  }

 } 

 

 public interface TaskListener{

  public void callBack(Object result);

 }

 /**

  * 

  * 不必太在意此处代码，只是示例

  *

  */

 public static class WebUtil{

  

  public static String get(String url) throws Exception{

   InputStream inputStream = new URL(url).openStream();

   StringBuilder strBuilder = new StringBuilder();

   BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

   for (String s = reader.readLine(); s != null; s = reader.readLine()) 

    strBuilder.append(s);

   

   inputStream.close();

   return strBuilder.toString();

  } 

 }

}

[Java]代码

//调用方法：

JQuery.execute("http://weather.news.qq.com/inc/minisite_125.js", new JQuery.TaskListener() { 

@Override

public void callBack(Object result) {

TextView t = new TextView(TaskDemoActivity.this);

t.setText(String.valueOf(result));

LinearLayout layout = (LinearLayout)findViewById(R.id.layout1);

layout.addView(t);

}

});

详细说明：http://android.662p.com/thread-239-1-1.html