FacebookCallBack Sample for Xamarin.Android

FacebookCallback.cs

using System;
using Xamarin.Facebook;
using CupcakeStore.Android.Activities;
using Xamarin.Facebook.Login;
using Android.Runtime;

namespace CupcakeStore.Android
{
	public class FacebookCallback<TResult> : Java.Lang.Object, IFacebookCallback
		where TResult : Java.Lang.Object
	{
		public Action HandleCancel { get; set; }

		public Action<FacebookException> HandleError { get; set; }

		public Action<TResult> HandleSuccess { get; set; }

		public FacebookCallback ()
		{
		}

		public void OnCancel ()
		{
			var handle = HandleCancel;

			if (handle != null)
				handle ();
		}

		public void OnError (FacebookException error)
		{
			var handle = HandleError;

			if (handle != null)
				handle (error);
		}

		public void OnSuccess (Java.Lang.Object result)
		{
			var handle = HandleSuccess;

			if (handle != null)
				handle (result.JavaCast<TResult> ());
		}
	}
}