How do I pan the image inside a UIImageView?

Question

I have a UIImageView that is displaying an image that is wider and taller than the UIImageView is. I would like to pan the image within the view us

Answer 1

I'd highly recommend enclosing your UIImageView in a UIScrollView. Have the UIImageView display the full image, and set the contentSize on the UIScrollView to be the same as your UIImageView's size. Your window into the image will be the size of the UIScrollView, and by using scrollRectToVisible:animated: you can pan to particular areas on the image in an animated fashion.

If you don't want scroll bars to appear, you can set the showsHorizontalScrollIndicator and showsVerticalScrollIndicatorproperties to NO.

UIScrollView also provides pinch-zooming functionality, which may or may not be useful to you.