如何在swift 3中设置按钮标签？

Question

@IBOutlet weak var catParentIdButton: UIButton!

我有这个代码,现在我想以编程方式编写按钮标签.
在swift 3.0中编写按钮标签的语法是什么？

Answer 1

方法签名在Swift 3.0中更改

func setTitle(_ title: String?, 
      for state: UIControlState) // Use this method to set the title for the button

例:

btn.setTitle(title: "Title", for: .normal)

注意 btn控件的默认状态更改.Normal为.normal.

// previous 
public static var Normal: UIControlState { get }

// Swift 3.0
static var normal: UIControlState { get }