preview.cs

using System;

using UIKit;
using QuickLook;
using Foundation;

namespace Preview
{
	class PreviewDataSource : QLPreviewControllerDataSource
	{
		#region implemented abstract members of QLPreviewControllerDataSource

		public override IQLPreviewItem GetPreviewItem (QLPreviewController controller, nint index)
		{
			return new QLItem ("Some Image", NSUrl.FromFilename ("icon.png"));
		}

		public override nint PreviewItemCount (QLPreviewController controller)
		{
			return 1;
		}

		#endregion
	}

	class QLItem : QLPreviewItem
	{
		public QLItem (string title, NSUrl uri)
		{
			this.title = title;
			url = uri;
		}

		private readonly string title;

		public override string ItemTitle
		{
			get { return title; }
		}

		private readonly NSUrl url;

		public override NSUrl ItemUrl
		{
			get { return url; }
		}
	}

	public partial class ViewController : UIViewController
	{
		public ViewController (IntPtr handle) : base (handle)
		{
		}

		QLPreviewController preview;

		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
			// Perform any additional setup after loading the view, typically from a nib.

			preview = new QLPreviewController ();
			preview.DataSource = new PreviewDataSource ();
			this.View.AddSubview (preview.View);
			//this.PresentViewController (preview, false, null);
		}	

		public override void DidReceiveMemoryWarning ()
		{
			base.DidReceiveMemoryWarning ();
			// Release any cached data, images, etc that aren't in use.
		}
	}
}