private void LoginButton_Click(object sender, EventArgs e) { string accessToken = LoginHelper.ValidateLogin(userID.Text, password.Text); if (!string.IsNullOrWhiteSpace(accessToken)) { RetrievedData retrievedData = RetrieveDataHelper.GetData(accessToken); homeDataService = new HomeDataService(retrievedData); var intent = new Intent(this, typeof(WelcomeHomeActivity)); string serializedData = JsonConvert.SerializeObject(homeDataService); intent.PutExtra("HomeDataService", serializedData); StartActivity(intent); } else { Android.Widget.Toast.MakeText(this, "Login Failed! Please Check ID or Password.", Android.Widget.ToastLength.Short).Show(); } }