Xamarin.Forms ActivityIndicator in code with FadeOut of indicator and FadeIn of content.

OnAppearing

        // Xamarin Evolve 2014: Extending Xamarin.Forms with Custom Controls - Jason Smith, Xamarin https://www.youtube.com/watch?v=pIZ8G47KPIM
        protected async override void OnAppearing() {
            base.OnAppearing();

            var loadingView = new ActivityIndicator {
                VerticalOptions = LayoutOptions.Center,
                HorizontalOptions = LayoutOptions.Center,
                IsRunning = true
            };

            if (initialLoad) {
                var normalContent = Content;

                Content = loadingView;
                await Task.Delay(1500);
                await loadingView.FadeTo(0, 100);

                normalContent.Opacity = 0;
                Content = normalContent;
                await normalContent.FadeTo(1, 500);
                initialLoad = false;
            }
        }

XAML

    <ActivityIndicator IsVisible="{Binding IsBusy}" IsRunning="{Binding IsBusy}"
     AbsoluteLayout.LayoutFlags="PositionProportional" AbsoluteLayout.LayoutBounds="0.5, 0.5, AutoSize, AutoSize" />