Question

当我运行以下方法时，我无法获得任何IP：

System.out.println("IP: " +getIpAddress());
public String getIpAddress() 
 {
   String ip = null;
   try 
   {
      HttpClient httpclient = new DefaultHttpClient();
      //HttpGet httpget = new HttpGet("http://ip2country.sourceforge.net/ip2c.php?format=JSON");
      HttpGet httpget = new HttpGet("http://agentgatech.appspot.com/");

      HttpResponse response;
      System.out.println("IP: 1");
      response = httpclient.execute(httpget);
      System.out.println("IP: 2" +response.getStatusLine().toString());

      HttpEntity entity = response.getEntity();
      entity.getContentLength();
      String str = EntityUtils.toString(entity);
      System.out.println("IP 3" +getApplicationContext() +str);
      JSONObject json_data = new JSONObject(str);
      ip = json_data.getString("ip");
      System.out.println("IP 4" +getApplicationContext() +ip);
   }
       catch (Exception e)
      {

      }

   return ip;
 }

我已经将以下内容添加到清单文件中：

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

我刚打印出以下内容！：

    IP: 1
    IP: null

任何人都可以告诉我为什么吗？这段代码在哪里错了？

编辑：仅针对其他人，答案是使用如下所示的线程：

Thread thread = new Thread(new Runnable(){
@Override
public void run() {
    try {
        HttpClient httpclient = new DefaultHttpClient();
       // HttpGet httpget = new HttpGet("http://ip2country.sourceforge.net/ip2c.php?format=JSON");
        HttpGet httpget = new HttpGet("http://agentgatech.appspot.com/");

        HttpResponse response;
        response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();
        entity.getContentLength();
        String str = EntityUtils.toString(entity);
        System.out.println("External IP: " +str);

        } catch (Exception e) {
        e.printStackTrace();
    }
    }
   });

开始吧：

thread.start();

如何获取android中的外部/公共IP地址？

0 个答案: