How to make custom buttons in iOS?

Question

The default iOS UI is nice but if I wanted to use images for buttons instead how would I do that - is it OpenGL?

Answer 1

You can do it by setting image or backgroundImage properties of a UIButton. If you want your button to look nice when the size changes, you can use stretchableImageWithLeftCapWidth:topCapHeight: method of UIImage, with an appropriate image.

You may also want to use a custom component if it satisfies your need.