public async Task LoginUser() { if (string.IsNullOrWhiteSpace(EmailAddress) || string.IsNullOrWhiteSpace(UserPassword)) { return; } _firebaseAuthService.LoginUser(EmailAddress, UserPassword); if (_firebaseAuthService.FirebaseAuth != null) { var user = await _userRepository.GetUser(_firebaseAuthService.FirebaseAuth.User.Email); await _mvxNavigationService.Navigate <FriendListViewModel, User>(user); return; } _notificationService.SendNotification("Invalid username/password, Login Failed"); }