How to implement scale-9 for custom background art created for UIButton

Question

What do I need to do programatically in order to use the same background image for UIButton of variable size? (commonly known as 9-slice scaling or scale-9)

Answer 1

Check out:

• (UIImage *)stretchableImageWithLeftCapWidth:(NSInteger)leftCapWidth topCapHeight:(NSInteger)topCapHeight

In the UIImage class.

If I understand what you're looking for correctly, this while allow you to use one png to define how your button looks, and it will stretch to any size vertically or horizontally.