lazy loading images in UIScrollView

Answer 1

1. Why is the code in the willbegindecelerating method? It would be better to have it in the scrolviewdidscroll method so loading can begin asap.

2. You should not modify any views from a separate thread as view drawing is not thread safe

3. Are the images really stored as data in a file or are they image files? If image files, use [UIImage imageNamed:] to load them as you are performing 2 conversions at the moment. If they are data, I suggest you create UIImages for most of them on a separate thread when the scollview is first shown, so that they images are ready when they need to be added to the scrollview.