Scroll a background in a different speed on a UIScrollView

Question

When somebody does a wipe gesture to scroll the content from left to right, I would like to have a background image scrolling into the same direction, but at a different spe

Answer 1

You can do it with CoreAnimation. You'll want to hook into the scrollViewDidEndDragging:willDecelerate: and scrollViewWillBeginDecelerating: UIScrollViewDelegate methods. Then begin an Animation on your image by changing the center position. See this SO article for more on animations.