Android(安卓)网络显示图片通过代理访问

主要的代码参考：http://www.cnblogs.com/hnrainll/archive/2012/05/28/2522558.html

重点看如何在Android代码中设置代理。

代码如下：

 1 public class MainDemo extends Activity { 2     /** Called when the activity is first created. */ 3  4     private ImageView imageView = null; 5  6     private String urlString = "http://s7.sinaimg.cn/middle/9b82a8c54c10ecacbb686&960"; 7      8     @Override 9     public void onCreate(Bundle savedInstanceState) {10         super.onCreate(savedInstanceState);11         setContentView(R.layout.main);12 13         imageView = (ImageView) findViewById(R.id.imageview01);14         imageView.setImageBitmap(returnBitmap(urlString));15     }16 17     public Bitmap returnBitmap(String url) {18         Bitmap bm = null;19 20         try {21             HttpURLConnection conn = getUrlConnection(url);22             conn.setDoInput(true);23             conn.connect();24             InputStream is = conn.getInputStream();25             bm = BitmapFactory.decodeStream(is);26             is.close();27         } catch (IOException e) {28             // TODO Auto-generated catch block29             e.printStackTrace();30         }31 32         return bm;33     }34 35     private HttpURLConnection getUrlConnection(String url) {36         java.net.Proxy p = new java.net.Proxy(java.net.Proxy.Type.HTTP,37                         new InetSocketAddress("172.20.220.2",38                                 8080));39         try {40             return (HttpURLConnection) new URL(url).openConnection(p);41         } catch (MalformedURLException e) {42             // TODO Auto-generated catch block43             e.printStackTrace();44         } catch (IOException e) {45             // TODO Auto-generated catch block46             e.printStackTrace();47         }48         return null;49     }50 }

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