AndroidFocusEvents.cs

using System;
using Android.Content;
using Android.Service.Autofill;
using Android.Views.Accessibility;
using CustomViewAccessibility.Droid;
using SampleApp.DependencyServices;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;

[assembly: ExportRenderer(typeof(IFocusEvents), typeof(AndroidFocusEvents))]
namespace CustomViewAccessibility.Droid
{
    public class AndroidFocusEvents : ImageRenderer
    {
        Context context;

        public AndroidFocusEvents(Context context) : base(context)
        {
            this.context = context;
        }

        protected override void OnElementChanged(ElementChangedEventArgs<Image> e)
        {
            base.OnElementChanged(e);
            if (Control == null)
            {
                return;
            }
        }
   
        protected override Android.Widget.ImageView CreateNativeControl()
        {
            return new AccessibleButton(context);
        }





    }

    public class AccessibleButton : Android.Widget.ImageView
    {
        public AccessibleButton(Context context) : base(context)
        {
            Console.WriteLine("***** AccessibleButton created *****");
        }

        public override void OnInitializeAccessibilityEvent(AccessibilityEvent e)
        {
            base.OnInitializeAccessibilityEvent(e);
            if (e.EventType == EventTypes.ViewAccessibilityFocused)
            {
                
                Console.WriteLine("ACCESSIBILITY I am in focus");
            }
            else if (e.EventType == EventTypes.ViewAccessibilityFocusCleared)
            {
                
                Console.WriteLine("ACCESSIBILITY I am in NOT in focus");
            }
        }
    }
}