Android 查看本機外網IP .

[java]
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1. String GetNetIp(String ipaddr){  
2.      URL infoUrl = null;  
3.      InputStream inStream = null;  
4.      try {  
5.          infoUrl = new URL(ipaddr);  
6.          URLConnection connection = infoUrl.openConnection();  
7.          HttpURLConnection httpConnection = (HttpURLConnection)connection;  
8.          int responseCode = httpConnection.getResponseCode();  
9.          if(responseCode == HttpURLConnection.HTTP_OK)  
10.            {      
11.               inStream = httpConnection.getInputStream();     
12.             BufferedReader reader = new BufferedReader(new InputStreamReader(inStream,"utf-8"));  
13.             StringBuilder strber = new StringBuilder();  
14.             String line = null;  
15.             while ((line = reader.readLine()) != null)   
16.                 strber.append(line + "\n");  
17.             inStream.close();  
18.             return strber.toString();               
19.           }  
20.      } catch (MalformedURLException e) {  
21.          // TODO Auto-generated catch block
      
22.          e.printStackTrace();  
23.      } catch (IOException e) {  
24.          // TODO Auto-generated catch block
      
25.          e.printStackTrace();  
26.      }  
27.     return "";  
28.  }      

   String GetNetIp(String ipaddr){        URL infoUrl = null;        InputStream inStream = null;        try {            infoUrl = new URL(ipaddr);            URLConnection connection = infoUrl.openConnection();            HttpURLConnection httpConnection = (HttpURLConnection)connection;            int responseCode = httpConnection.getResponseCode();            if(responseCode == HttpURLConnection.HTTP_OK)              {                     inStream = httpConnection.getInputStream();                  BufferedReader reader = new BufferedReader(new InputStreamReader(inStream,"utf-8"));               StringBuilder strber = new StringBuilder();               String line = null;               while ((line = reader.readLine()) != null)                    strber.append(line + "\n");               inStream.close();               return strber.toString();                          }        } catch (MalformedURLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }       return "";    }    

查看 System.out.println((GetNetIp("http://fw.qq.com/ipaddress")));
加許可權 <uses-permission android:name="android.permission.INTERNET"></uses-permission> 

通過擷取http://fw.qq.com/ipaddress網頁取得外網IP