創建IB按鈕後，UIButton setImage不起作用

Question

我有一個IBOutlet UIButton，我添加到IB的滾動視圖中。我將其類型設置爲自定義，然後在viewDidLoad中我有：

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

圖像不顯示...爲什麼不？

Answer 1

使用

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

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