failing ALAssetLibrary

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using MonoTouch.AssetsLibrary;

namespace Owen
{
	// The UIApplicationDelegate for the application. This class is responsible for launching the 
	// User Interface of the application, as well as listening (and optionally responding) to 
	// application events from iOS.
	[Register ("AppDelegate")]
	public partial class AppDelegate : UIApplicationDelegate
	{
		// class-level declarations
		UIWindow window;
		OwenViewController viewController;
		ALAssetsLibrary lib;
		UIImage image;
		NSDictionary dict = new NSDictionary ();
		//
		// This method is invoked when the application has loaded and is ready to run. In this 
		// method you should instantiate the window, load the UI into it and then make the window
		// visible.
		//
		// You have 17 seconds to return from this method, or iOS will terminate your application.
		//
		public override bool FinishedLaunching (UIApplication app, NSDictionary options)
		{
			window = new UIWindow (UIScreen.MainScreen.Bounds);
			
			viewController = new OwenViewController ();
			window.RootViewController = viewController;
			window.MakeKeyAndVisible ();
			
			lib = new ALAssetsLibrary ();
			
			//this is embedded into my app - just set to "content"
			image = UIImage.FromFile ("armbears.jpg");
			
			//this works! yay! passing a NSData JPEG
			lib.WriteImageToSavedPhotosAlbum (image.AsJPEG (), dict, delegate(NSUrl assetUrl, NSError error) {
				if (error != null)
				{
					Console.WriteLine (error.LocalizedDescription);
				}
				Console.WriteLine ("WRITE: >>>" + assetUrl);
			});
			
			
			//this does NOT work. passing a UIImage. Apple docs say a CGImage, so.... is MT doing something
			// tricky in the background? Or is the binding incorrect??
			lib.WriteImageToSavedPhotosAlbum (image, dict, delegate(NSUrl assetUrl, NSError error) {
				if (error != null)
				{
					Console.WriteLine ("error 2" + error.LocalizedDescription);
				}
				Console.WriteLine ("WRITE2: >>>" + assetUrl);
			});
			
			//this is all async, so you are seldom going to see the image you put in, come out right away.
			
			lib.Enumerate (ALAssetsGroupType.All, (ALAssetsGroup @group, ref bool stop) => {
				if (group != null)
				{
			
			
					stop = false;
			
					group.SetAssetsFilter (ALAssetsFilter.AllAssets);

					
					group.Enumerate ((ALAsset asset, int index, ref bool stop2) =>
					{
						    
						if (asset != null)
						{
						        
							stop2 = false;
						
							Console.WriteLine ("ENUMERATE Asset: " + asset.DefaultRepresentation.Url);
						
						}
					}
					);
					
					
					
					
					
				}
				
			}, (error) => {
				Console.WriteLine ("Error?");
				if (error != null)
				{
					Console.WriteLine ("Error!" + error.LocalizedDescription);
				}
			});
			
			//you wanna change this... look in the debug log for URLs
			string testUrl = "assets-library://asset/asset.JPG?id=069817D9-2412-4C26-923B-BA6DC745D541&ext=JPG";
			
			lib.AssetForUrl (new NSUrl (testUrl), (asset) => {
				Console.WriteLine ("Read asset back");
				if (asset != null)
				{
					Console.WriteLine ("{0} - {1}", asset.DefaultRepresentation.Filename, asset.AssetType);
				}
				
			}, (error) => {
				Console.WriteLine ("error?");
				if (error != null)
				{
					Console.WriteLine ("Error: " + error.LocalizedDescription);
				}
			});
			
			
			
			return true;
		}
	}
	

}