private void OnSigninResultCallback(NotificationCenter obj, ValueTuple <bool, string> payload) { if (payload.Item1 == true) { var jObject = (JObject)JsonConvert.DeserializeObject(payload.Item2); var login = jObject.Property("userName")?.Value?.ToString(); var password = jObject.Property("password")?.Value?.ToString(); var token = jObject.Property("mobileAppToken")?.Value?.ToString(); var userId = jObject.Property("id")?.Value?.ToString(); ApplicationSettings.SetCredentials(userId, login, password, token); obj.ChangeMainPage(new MainPage()); } else { DisplayAlert("", "Логін або пароль невірні", "ок"); } }