使UIButton背景图像大于帧

Question

I'm trying to make a UIButton with a background image where the image is larger than the button frame.

The problem is, the UIButton automatically scales the image to fit and haven't found a way to change the behavior.

Am I missing something obvious or is it time to make a custom button?

Answer 1

Subclass UIButton and override the

- (CGRect)backgroundRectForBounds:(CGRect)bounds;

method so it returns the size you want.

TIP: Use this method to center your background as well.

Answer 2

Looks like the answer to this one is. Not possible through existing interface on UIButton .

The simplest way to implement seems to be using a custom sub class of UIButton and creating a UIImageView with the same frame as the UIButton , turn off clipping and scaling and then just capture all the setBackground methods and capture state changes to handle "normal" button interaction changing the background images.