private async void WebView_Navigated(object sender, WebNavigatedEventArgs e)
        {
            try
            {
                accesToken = ExtractAccessToken(e.Url);
                if (accesToken != "")
                {
                    if (Application.Current.Properties.ContainsKey("tokenFace"))
                    {
                        Application.Current.Properties["tokenFace"] = accesToken;
                    }
                    else
                    {
                        Application.Current.Properties.Add("tokenFace", accesToken);
                    }

                    webView.IsVisible      = false;
                    stackLoading.IsVisible = true;
                    await GetDadosFace();

                    MainPage.AbrirMenu();
                    stackLoading.IsVisible = false;
                }
                else
                {
                    stackLoading.IsVisible = false;
                    webView.IsVisible      = true;
                }
            }
            catch
            {
                await Navigation.PopAsync(true);

                stackLoading.IsVisible = true;
            }
        }