Implementação da interface IOnPageChangeListener (C# implementation of IOnPageChangeListener)

OnPageChangeListener.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.Support.V4.View;

namespace Sample
{
    public class OnPageChangeListener : Java.Lang.Object, ViewPager.IOnPageChangeListener
    {
        public Action<int, float, int> HandleOnPageScrolled { get; set; }
        public Action<int> HandleOnPageScrollStateChanged { get; set; }
        public Action<int> HandleOnPageSelected { get; set; }

        public void OnPageScrolled(int position, float positionOffset, int positionOffsetPixels)
        {
            var c = HandleOnPageScrolled;

            if (c != null)
                c(position, positionOffset, positionOffsetPixels);
        }

        public void OnPageScrollStateChanged(int state)
        {
            var c = HandleOnPageScrollStateChanged;

            if (c != null)
                c(state);
        }

        public void OnPageSelected(int position)
        {
            var c = HandleOnPageSelected;

            if (c != null)
                c(position);
        }
    }
}