Android 如何获取重定向页面URL Httpclient

下面的代码帮助我登录到一个页面，并获取重定向页面的所有Html内容。但是，当我获取url时，它会提供旧的登录url

如何获取重定向的页面URL

    protected Void doInBackground(String... params) {
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(UrlLink);
    try {
        // Add user name and password

        String username = "xxxxxxx";
        String password = "yyyyyyy";
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("login", username));
        nameValuePairs.add(new BasicNameValuePair("password", password));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        Log.v("SENCIDE", "Execute HTTP Post Request");
        HttpResponse response = httpclient.execute(httppost);
        InputStream is=response.getEntity().getContent();
old --->String newUrl=httppost.getURI().toString();
Url                 Log.v("ddd",newUrl);
        String line = "";
         StringBuilder total = new StringBuilder();
         BufferedReader rd = new BufferedReader(new InputStreamReader(is));

         try {
          while ((line = rd.readLine()) != null) { 
            total.append(line); 
          }
          Log.v("dfd",total.toString());
         } catch (IOException e) {
          e.printStackTrace();
         }

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查看响应的位置headerNot无法理解can u plz..应该类似于以下字符串redirectURL=response.getFirstHeaderLocation.getValue；让我知道，这样我就可以发布它作为答案。如果我插入该行，它会抛出错误消息