如何设置UIButton类型？

Question

A small - little question.

I have seen many application having buttons like following.

While using Interface builder I didn't Found any option to have this kind of button. How to have this kind of button in your application.

Answer 1

Almost invariably these styles are done using bitmap images or for the more thrifty of memory, CAGradientLayer .

To do it with CAGradientLayer, you would do something very much like the way the gradient and shadows are done in this blog entry .

Answer 2

See UICatalog example -> Buttons. You will find there this kind of buttons. Usually they're done using png images for pressed & normal states. I think you can do it in IB by binding a png image to pressed & normal states, but the example in UICatalog is pretty clear and can be used "as is"