public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        private Forms.App _app;

        protected override void OnCreate(Bundle bundle)
        {
            ...

            base.SetTheme(Resource.Style.MainTheme);
            base.OnCreate(bundle);

            global::Xamarin.Forms.Forms.Init(this, bundle);
            CarouselViewRenderer.Init();