Android獲取外部IP

Question

我正在開發android 2.1中的應用程序，我想顯示外部IP。我怎麼能這樣做？提前致謝。

Answer 1

public void getCurrentIP() { 
    ip.setText("Please wait..."); 
    try { 
      HttpClient httpclient = new DefaultHttpClient(); 
      HttpGet httpget = new HttpGet("http://ifcfg.me/ip"); 
      // HttpGet httpget = new HttpGet("http://ipecho.net/plain"); 
      HttpResponse response; 

      response = httpclient.execute(httpget); 

      //Log.i("externalip",response.getStatusLine().toString()); 

      HttpEntity entity = response.getEntity(); 
      if (entity != null) { 
        long len = entity.getContentLength(); 
        if (len != -1 && len < 1024) { 
          String str=EntityUtils.toString(entity); 
          //Log.i("externalip",str); 
       ip.setText(str); 
        } else { 
          ip.setText("Response too long or error."); 
          //debug 
          //ip.setText("Response too long or error: "+EntityUtils.toString(entity)); 
          //Log.i("externalip",EntityUtils.toString(entity)); 
        }    
      } else { 
        ip.setText("Null:"+response.getStatusLine().toString()); 
      } 

    } 
    catch (Exception e) 
    { 
     ip.setText("Error"); 
    } 

} 

Answer 2

我不認爲有辦法以編程方式執行它，但你可以調用一個像http://www.whatismyip.com/這樣的站點，然後從頁面中去除IP。您可能希望找到提供API並支持第三方調用的網站。

Answer 3

http://api.externalip.net/ip將返回你的IP在簡單的API格式

您可以在此處詳細瞭解獲得外部IP：http://www.externalip.net/api

Answer 4

看看這個代碼片段：

String ipAddress = null; 
    try { 
     for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { 
      NetworkInterface intf = en.nextElement(); 
      for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { 
       InetAddress inetAddress = enumIpAddr.nextElement(); 
       if (!inetAddress.isLoopbackAddress()) { 
        ipAddress = inetAddress.getHostAddress().toString(); 
       } 
      } 
     } 
    } catch (SocketException ex) { 
     ex.printStackTrace(); 
    } 

    Log.e("IP ADDRESS:", ipAddress);