Swift 4 函数按钮属性

Question

我对 Swift 很陌生。我正在尝试创建 func

func roundedButton(buttonik: String) {       
    buttonik.clipsToBounds = true
    buttonik.layer.cornerRadius = 10
    buttonik.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner, .layerMaxXMaxYCorner]
}

比调用它

roundedButton(buttonik: "buttonTop")

并有这个输出

buttonTop.clipsToBounds = true
buttonTop.layer.cornerRadius = 10
buttonTop.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner, .layerMaxXMaxYCorner]

我收到这些错误

Value of type 'String' has no member 'clipsToBounds'
Value of type 'String' has no member 'layer'

谢谢:)

Answer 1

我认为问题在于您将按钮的名称与代表该按钮的对象混淆了。将您的日常安排更改为:

func roundedButton(button: UIButton) {       
    button.clipsToBounds = true
    button.layer.cornerRadius = 10
    button.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner, .layerMaxXMaxYCorner]
}

然后通过传递您想要应用这些属性的按钮来调用它...而不是传递一个字符串。