MonoDroid.CustomList.CustomListAdapter.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.Graphics.Drawables;

namespace MonoDroid.CustomList
{
	public class CustomListAdapter : BaseAdapter
	{
		Activity context;
		
		public List<Animal> items;

		public CustomListAdapter(Activity context) //We need a context to inflate our row view from
			: base()
		{
			this.context = context;
			
			//For demo purposes we hard code some data here
			this.items = new List<Animal>() {
				new Animal() { Name = "Elephant", Description = "Big and Gray, but what the hey", Image = Resource.drawable.elephant },
				new Animal() { Name = "Chinchilla", Description = "Little people of the andes", Image = Resource.drawable.chinchilla },
				new Animal() { Name = "Lion", Description = "Cowardly lion, anyone?", Image = Resource.drawable.lion },
				new Animal() { Name = "Skunk", Description = "Ello, baby. I am ze locksmith of love, no?", Image = Resource.drawable.skunk },
				new Animal() { Name = "Rhino", Description = "Most live to about 60, pretty old eh?", Image = Resource.drawable.rhino },
				new Animal() { Name = "Zebra", Description = "Stripes maybe not so great for hiding", Image = Resource.drawable.zebra },
				new Animal() { Name = "Squirrel", Description = "Nuts nuts, where's my nuts?!", Image = Resource.drawable.squirrel },
				new Animal() { Name = "Walrus", Description = "I am he as you are he as you are me", Image = Resource.drawable.walrus },
				new Animal() { Name = "Giraffe", Description = "Bigger than your ford pinto", Image = Resource.drawable.giraffe },
				new Animal() { Name = "Chicken", Description = "I'll take 2 eggs over easy", Image = Resource.drawable.chicken },
				new Animal() { Name = "Duck", Description = "He's all quacked up", Image = Resource.drawable.duck },
				new Animal() { Name = "Hawk", Description = "He needs to be on a t-shirt", Image = Resource.drawable.hawk },
				new Animal() { Name = "Lobster", Description = "We were at the beach...", Image = Resource.drawable.lobster },
				new Animal() { Name = "Pig", Description = "Babe, Orson, Piglet, whatever", Image = Resource.drawable.pig },
				new Animal() { Name = "Rabbit", Description = "Thumper is the best rabbit name ever", Image = Resource.drawable.rabbit },
				new Animal() { Name = "Turtle", Description = "Slow and steady wins the race", Image = Resource.drawable.turtle },
			};
		}

		public override int Count
		{
			get { return items.Count; }
		}

		public override Java.Lang.Object GetItem(int position)
		{
			return position;
		}

		public override long GetItemId(int position)
		{
			return position;
		}
		
		public override View GetView(int position, View convertView, ViewGroup parent)
		{
			//Get our object for this position
			var item = items[position];			
			
			//Try to reuse convertView if it's not  null, otherwise inflate it from our item layout
			// This gives us some performance gains by not always inflating a new view
			// This will sound familiar to MonoTouch developers with UITableViewCell.DequeueReusableCell()
			var view = (convertView ?? 
				context.LayoutInflater.Inflate(
					Resource.layout.customlistitem, 
					parent, 
					false)) as LinearLayout;
				
			//Find references to each subview in the list item's view
			var imageItem = view.FindViewById(Resource.id.imageItem) as ImageView;
			var textTop = view.FindViewById(Resource.id.textTop) as TextView;
			var textBottom = view.FindViewById(Resource.id.textBottom) as TextView;

			//Assign this item's values to the various subviews
			imageItem.SetImageResource(item.Image);
			textTop.SetText(item.Name, TextView.BufferType.Normal);
			textBottom.SetText(item.Description, TextView.BufferType.Normal);
			
			//Finally return the view
			return view;
		}

		public Animal GetItemAtPosition(int position)
		{
			return items[position];
		}
	}
}