不支持Android身份验证方案ntlm

我使用asynhttpClient进行基本身份验证

http://loopj.com/android-async-http/

这是looj lib ..

下面是我的代码:

usernameRandomPassword = userName +":"+密码;

            Log.d("username=",usernameRandomPassword);
            Log.d("url=",url);
            String authorization = "Basic " + Base64.encodeToString(usernameRandomPassword.getBytes("UTF-8"), Base64.NO_WRAP);
            httpClient.addHeader("Authorization",authorization);
            httpClient.addHeader("Content-type", "application/json");
            httpClient.setTimeout(20000);

            httpClient.get( url, new AsyncHttpResponseHandler() {

                    @Override
                    public void onStart() {
                        System.out.println("on satrt");
                        super.onStart();
                    }

                    @Override
                    public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {

                        System.out.println("on onSuccess statusCode="+statusCode);
                        toastmessgae("onSuccess status code="+statusCode);
                        super.onSuccess(statusCode, headers, responseBody);
                    }

                    @Override
                    public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {

                        System.out.println("on onFailure="+statusCode);
                        toastmessgae("onFailure status code="+statusCode);
                        super.onFailure(statusCode, headers, responseBody, error);

                    }

                    @Override
                    public void onFinish() {
                        System.out.println("on onFinish");
                        super.onFinish();
                    }
                });



        } catch (UnsupportedEncodingException e) {

        }

但我总是在控制台401中收到,下面是日志

验证方案ntlm不受支持.
无法应对任何这些挑战:{ntlm = WWW-Authenticate:NTLM,negotiate = WWW-Authenticate:Negotiate}

我在直接链接上检查了凭据是否正确.

我已经花了一整天的时间,任何人都可以帮助我吗？如果你分享一些例子,那将非常有帮助.

提前致谢..