Question

I have set the UIButton‘s background image and put a title on it(I used setBackgroundImage method not setImage). Now I want to expand the hitTest area of a UIButton without extrude it’s background image.

How can I do this?

Answer 1

Well, you could extend UIButton and override UIView’s hitTest method:

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
    int expandMargin = 20;
    CGRect extendedFrame = CGRectMake(0 - expandMargin , 0 - expandMargin , self.bounds.size.width + (expandMargin * 2) , self.bounds.size.height + (expandMargin * 2));
    return (CGRectContainsPoint(extendedFrame , point) == 1) ? self : nil;
}