在IB中创建按钮后，UIButton setImage无法正常工作

Question

I have an IBOutlet UIButton that I added to a scroll view in IB. I set its type to custom, then in viewDidLoad I have:

[self.featuredButton setImage:[UIImage imageNamed:@"featuredNormal.png"] forState:UIControlStateNormal];
[self.featuredButton setImage:[UIImage imageNamed:@"featuredSelected.png"] forState:UIControlStateSelected];

The image doesn't appear...why not?

Answer 1

Use

[self.featuredButton setBackgroundImage:[UIImage imageNamed:@"featuredNormal.png"] forState:UIControlStateNormal];

[self.featuredButton setBackgroundImage:[UIImage imageNamed:@"featuredSelected.png"] forState:UIControlStateSelected];