ios - 在 IB 中创建按钮后 UIButton setImage 不起作用

Question

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

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

图像没有出现...为什么不呢？

Answer 1

利用

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

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