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();
            }
        }