Android模仿jquery异步请求

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package com.xbl.task;

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import java.io.BufferedReader;

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import java.io.InputStream;

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import java.io.InputStreamReader;

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import java.net.URL;

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import java.util.concurrent.Executor;

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import java.util.concurrent.ExecutorService;

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import java.util.concurrent.Executors;

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import android.os.Bundle;

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import android.os.Handler;

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import android.os.Message;

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import android.util.Log;

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public class JQuery {

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    private static final String KEY = "key";

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    private static String TAG = "JQuery";

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

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

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    private static final Handler handler = new Handler(){

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        @Override

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        public void handleMessage(Message msg) {

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            TaskListener listener = (TaskListener)msg.obj;

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            Object result = msg.getData();

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            if(listener !=null ){

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                listener.callBack(result);

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            }

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            destory();

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        }

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    };

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    private JQuery(){      

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    }

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

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        worker.execute(new Runnable() {

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            @Override

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            public void run() {

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                String result = null;

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                try {

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                    result = WebUtil.get(url);

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                } catch (Exception e) {

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

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                }

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                Message msg = new Message();

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                Bundle data = new Bundle();

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                data.putSerializable(KEY, result);

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                msg.setData(data);

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                msg.obj = listener;

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                handler.sendMessage(msg);

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            }

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        });

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    }

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    //销毁线程

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    private static void destory() {

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

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            ExecutorService es = (ExecutorService) worker;

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            if (!es.isShutdown()) {

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                es.shutdown();

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            }

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        }

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    }  

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    public interface TaskListener{

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        public void callBack(Object result);

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    }

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    /**

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     *

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     * 不必太在意此处代码，只是示例

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     *

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     */

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    public static class WebUtil{

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        public static String get(String url) throws Exception{

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

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            StringBuilder strBuilder = new StringBuilder();

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

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

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                strBuilder.append(s);

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            inputStream.close();

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            return strBuilder.toString();

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        }

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    }

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}

2. [代码][Java]代码

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//调用方法：

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

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                @Override

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                public void callBack(Object result) {

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                    TextView t = new TextView(TaskDemoActivity.this);

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

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

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                    layout.addView(t);

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                }

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            });