QuickPlay/QuickPlay/SongRecycler.cs

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Support.V7.Widget;
using Android.Views;
using Android.Widget;
using System;
using System.Collections.Generic;

namespace QuickPlay
{
    class SongRecyclerAdapter : Android.Support.V7.Widget.RecyclerView.Adapter
    {
        public event EventHandler<IPlayable> SongClick;
        IPlayer player;
        ILayoutStrategy layoutStrategy;
        public SongRecyclerAdapter(IPlayer player, ILayoutStrategy layoutStrategy)
        {
            this.player = player;
            this.layoutStrategy = layoutStrategy;
        }
        public override int ItemCount
        {
            get
            {
                return player.Songs.Count;
            }
        }
        public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
        {
            // I admit I have little idea what I am doing.
            View itemView = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.songLayout, parent, false);
            return new SongRecyclerViewHolder(itemView, OnItemClick);
        }
        public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
        {
            SongRecyclerViewHolder vh = (SongRecyclerViewHolder)holder;
            List<IPlayable> layout = layoutStrategy.LayOut(player.Songs.Values);
            vh.SongName.Text = layout[position].Identifier;
        }
        void OnItemClick(int position)
        {
            IPlayable playable = layoutStrategy.LayOut(player.Songs.Values)[position];
            if (SongClick != null) SongClick.Invoke(this, playable);
        }
    }
    class SongRecyclerViewHolder : Android.Support.V7.Widget.RecyclerView.ViewHolder
    {
        public TextView SongName { get; private set; }
        public SongRecyclerViewHolder(View itemView, Action<int> callback) : base(itemView)
        {
            SongName = itemView.FindViewById<TextView>(Resource.Id.songName);
            itemView.Click += (sender, e) => callback(base.LayoutPosition);
        }
    }
}