gistfile1.m

//Add this as an ivar
NSOperationQueue *imageLoadingQueue;

//Add this to your dealloc method
[imageLoadingQueue release];


//If you're creating the nib programatically use this
- (id)initWithNibName:(NSString *)nibName bundle:(NSBundle *)nibBundle {
	if (self = [super initWithNibName:nibName bundle:nibBundle]) {
		imageLoadingQueue = [[NSOperationQueue alloc] init];
	}
	return self;
}

//Otherwise use this version (or put both in just in case)
- (id)initWithCoder:(NSCoder *)aDecoder {
	if (self = [super initWithCoder:aDecoder]) {
		imageLoadingQueue = [[NSOperationQueue alloc] init];
	}
	return self;
}






- (void)gamekingsLiteDataWasLoaded {
	[self loadImageFromURL:[NSURL URLWithString:[dataLoader appPoster]]];
}

- (void)loadImageFromURL:(NSURL *)aImageURL {
	//Perform this in the background
	[imageLoadingQueue addOperationWithBlock:^{
		NSError *error = nil;
		NSData *imageData = [NSData dataWithContentsOfURL:aImageURL options:NSDataReadingUncached error:&error];
		
		//Perform the following on the main thread after we've downloaded the data (otherwise bad things will happen)
		[[NSOperationQueue mainQueue] addOperationWithBlock:^{
			if (imageData) {
				UIImage *image = [UIImage imageWithData:imageData];
				[imageView setImage:image];
				continueButton.alpha = 1;
			} else {
				NSLog(@"need to handle error:%@", error);
			}
		}];
	}];
}