Android facebook webdialog坚持加载

Question

我收到了所有用户信息，但是当点击发送请求对话框按钮时，窗口弹出并停止加载。

我尝试了一段时间，但它在加载时卡住了，并随着网络错误消息而消失。

我非常感谢任何帮助。谢谢你。

private void sendRequestDialog() {
    Bundle params = new Bundle();
    params.putString("message", "Learn how to make your Android apps social");

    WebDialog requestsDialog = (
        new WebDialog.RequestsDialogBuilder(getActivity(),
            Session.getActiveSession(),
            params))
            .setOnCompleteListener(new OnCompleteListener() {

                @Override
                public void onComplete(Bundle values,
                    FacebookException error) {
                    if (error != null) {
                        if (error instanceof FacebookOperationCanceledException) {
                            Toast.makeText(getActivity().getApplicationContext(), 
                                "Request cancelled", 
                                Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(getActivity().getApplicationContext(), 
                                "Network Error", 
                                Toast.LENGTH_SHORT).show();
                        }
                    } else {
                        final String requestId = values.getString("request");
                        if (requestId != null) {
                            Toast.makeText(getActivity().getApplicationContext(), 
                                "Request sent",  
                                Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(getActivity().getApplicationContext(), 
                                "Request cancelled", 
                                Toast.LENGTH_SHORT).show();
                        }
                    }   
                }

            })
            .build();
    requestsDialog.show();
}