Android开发之定义接口暴露数据

 1 package com.lijingbo.knowweather.utils;
 2 
 3 import java.io.ByteArrayOutputStream;
 4 import java.io.IOException;
 5 import java.io.InputStream;
 6 import java.net.HttpURLConnection;
 7 import java.net.URL;
 8 
 9 
10 public class HttpUtils {
11     private static final String TAG = "HttpUtils";
12 
13     public void getMethod(final String address) {
14         new Thread(new Runnable() {
15             @Override
16             public void run() {
17                 HttpURLConnection connection = null;
18                 try {
19                     URL url = new URL(address);
20                     connection = (HttpURLConnection) url.openConnection();
21                     connection.setRequestMethod("GET");
22                     connection.setConnectTimeout(5000);
23                     connection.setReadTimeout(5000);
24                     connection.connect();
25                     if ( connection.getResponseCode() == 200 ) {
26                         InputStream inputStream = connection.getInputStream();
27                         ByteArrayOutputStream baos = new ByteArrayOutputStream();
28                         byte[] buffers = new byte[1024];
29                         int len;
30                         while ( (len = inputStream.read(buffers)) != -1 ) {
31                             baos.write(buffers, 0, len);
32                         }
33                         String result = baos.toString();
34                         httpCallBack.onSuccess(result);
35                         LogUtils.e(TAG, "获取到的服务器信息为：" + result);
36                         baos.close();
37                         inputStream.close();
38 
39                     }
40                 } catch ( IOException e ) {
41                     //网络错误
42                     httpCallBack.onError(e.toString());
43                     e.printStackTrace();
44                 } finally {
45                     if ( connection != null ) {
46                         connection.disconnect();
47                     }
48                 }
49             }
50         }).start();
51     }
52 
53     private HttpCallBack httpCallBack;
54     public void setHttpListener(HttpCallBack httpCallBack){
55         this.httpCallBack=httpCallBack;
56     }
57 
58     public  interface HttpCallBack {
59         void onSuccess(String result);
60         void onError(String error);
61     }
62 }

 1         HttpUtils httpUtils=new HttpUtils();
 2         httpUtils.getMethod(url);
 3         httpUtils.setHttpListener(new HttpUtils.HttpCallBack() {
 4             @Override
 5             public void onSuccess(String result) {
 6                 LogUtils.e(TAG,"网络请求结果："+result);
 7             }
 8 
 9             @Override
10             public void onError(String error) {
11                 LogUtils.e(TAG,"网络请求结果："+error);
12             }
13         });