Android开发之定义接口暴露数据

写了一个网络请求的工具类，然后想要获取到网络请求的结果，在网络工具类中写了一个接口，暴露除了请求到的数据

代码：

 package com.lijingbo.knowweather.utils;

 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;

 public class HttpUtils {
     private static final String TAG = "HttpUtils";

     public void getMethod(final String address) {
         new Thread(new Runnable() {
             @Override
             public void run() {
                 HttpURLConnection connection = null;
                 try {
                     URL url = new URL(address);
                     connection = (HttpURLConnection) url.openConnection();
                     connection.setRequestMethod("GET");
                     connection.setConnectTimeout(5000);
                     connection.setReadTimeout(5000);
                     connection.connect();
                     if ( connection.getResponseCode() == 200 ) {
                         InputStream inputStream = connection.getInputStream();
                         ByteArrayOutputStream baos = new ByteArrayOutputStream();
                         byte[] buffers = new byte[1024];
                         int len;
                         while ( (len = inputStream.read(buffers)) != -1 ) {
                             baos.write(buffers, 0, len);
                         }
                         String result = baos.toString();
                         httpCallBack.onSuccess(result);
                         LogUtils.e(TAG, "获取到的服务器信息为：" + result);
                         baos.close();
                         inputStream.close();

                     }
                 } catch ( IOException e ) {
                     //网络错误
                     httpCallBack.onError(e.toString());
                     e.printStackTrace();
                 } finally {
                     if ( connection != null ) {
                         connection.disconnect();
                     }
                 }
             }
         }).start();
     }

     private HttpCallBack httpCallBack;
     public void setHttpListener(HttpCallBack httpCallBack){
         this.httpCallBack=httpCallBack;
     }

     public  interface HttpCallBack {
         void onSuccess(String result);
         void onError(String error);
     }
 }

想要使用该工具类的地方，这样写：

代码：

         HttpUtils httpUtils=new HttpUtils();
         httpUtils.getMethod(url);
         httpUtils.setHttpListener(new HttpUtils.HttpCallBack() {
             @Override
             public void onSuccess(String result) {
                 LogUtils.e(TAG,"网络请求结果："+result);
             }

             @Override
             public void onError(String error) {
                 LogUtils.e(TAG,"网络请求结果："+error);
             }
         });