Xamarin Plugin that adds a loading modal

LoadingModal.cs

using Xamarin.Forms;

namespace vhoyer.XamPlugins.MoreModals
{
    public class LoadingModal
    {
        private AbsoluteLayout layout;

        private AbsoluteLayout AbsLoadingBG, AbsLoadingFG;
        private ActivityIndicator ActLoading;

        public LoadingModal(AbsoluteLayout layout)
        {
            InitiateComponents(layout);
        }

        public LoadingModal(AbsoluteLayout layout, bool startLoading)
        {
            InitiateComponents(layout);

            startLoadingRoutine(startLoading);
        }

        public LoadingModal(ContentPage page)
        {
            InitiateComponents(page.Content);
            page.Content = this.layout;
        }

        public LoadingModal(ContentPage page, bool startLoading)
        {
            InitiateComponents(page.Content);
            page.Content = this.layout;

            startLoadingRoutine(startLoading);
        }

        private void startLoadingRoutine(bool startLoading)
        {
            if (startLoading) {
                Start();
                return;
            }
            Stop();
        }

        private void InitiateComponents(View tempLayout)
        {
            var absLayout = new AbsoluteLayout();
            absLayout.Children.Add(tempLayout);

            InitiateComponents(absLayout);
        }

        private void InitiateComponents(AbsoluteLayout layout)
        {
            var tempLayout = layout.Children[0];

            this.layout = layout;
            this.layout.HorizontalOptions = LayoutOptions.FillAndExpand;
            this.layout.VerticalOptions = LayoutOptions.FillAndExpand;

            this.layout.Children.RemoveAt(0);
            this.layout.Children.Add(tempLayout, new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All);

            this.AbsLoadingBG = new AbsoluteLayout {
                IsVisible = false,
                BackgroundColor = Color.Black,
                Opacity = 0.5,
                HorizontalOptions = LayoutOptions.FillAndExpand,
                VerticalOptions = LayoutOptions.FillAndExpand,
            };
            this.layout.Children.Add(AbsLoadingBG, new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All);

            this.AbsLoadingFG = new AbsoluteLayout {
                IsVisible = false,
                VerticalOptions = LayoutOptions.FillAndExpand,
                HorizontalOptions = LayoutOptions.FillAndExpand,
            };
            this.ActLoading = new ActivityIndicator {
                IsVisible = false,
                IsRunning = false,
                VerticalOptions = LayoutOptions.Center,
                HorizontalOptions = LayoutOptions.Center,
            };
            this.AbsLoadingFG.Children.Add(ActLoading, new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All);
            this.layout.Children.Add(AbsLoadingFG, new Rectangle(0, 0, 1, 1), AbsoluteLayoutFlags.All);
        }

        public void Start()
        {
            AbsLoadingBG.IsVisible = true;

            AbsLoadingFG.IsVisible = true;

            ActLoading.IsVisible = true;
            ActLoading.IsRunning = true;
        }
        public void Stop()
        {
            AbsLoadingBG.IsVisible = false;

            AbsLoadingFG.IsVisible = false;

            ActLoading.IsVisible = false;
            ActLoading.IsRunning = false;
        }
    }
}