在IB中创建按钮后，UIButton setImage无法正常工作

Question

我有一个IBOutlet UIButton，我添加到IB中的滚动视图。我将其类型设置为自定义，然后在viewDidLoad中我有：

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

图片没有出现......为什么不呢？

Answer 1

使用

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

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