public void OnClick(View v)
        {
            Intent intent = null;

            switch (v.Id)
            {
            case Resource.Id.btn_simple_example:
                intent = new Intent(this, typeof(SimpleSingleExample));
                break;

            case Resource.Id.btn_custom_example:
                intent = new Intent(this, typeof(CustomExample));
                break;

            case Resource.Id.btn_sequence_example:
                intent = new Intent(this, typeof(SequenceExample));
                break;

            case Resource.Id.btn_reset_all:
                MaterialShowcaseView.ResetAll(this);
                Toast.MakeText(this, "All Showcases reset", ToastLength.Long).Show();
                break;
            }

            if (intent != null)
            {
                StartActivity(intent);
            }
        }
        public void OnClick(View v)
        {
            switch (v.Id)
            {
            case Resource.Id.btn_show:
                PresentShowcaseView(0);
                break;

            case Resource.Id.btn_reset:
                MaterialShowcaseView.ResetSingleUse(this, ShowcaseId);
                Toast.MakeText(this, "Showcase reset", ToastLength.Long).Show();
                break;
            }
        }