ios - 为什么这个 IBDesignable 类不在 Storyboard 上显示其更改？

Question

我有一个 UIButton 的 IBDesignable 子类，但我的更改没有出现在我使用它的 Storyboard 上。我尝试刷新 Storyboard上的所有 View ，或将按钮与类重新链接，但无济于事。

类:

@IBDesignable class MyButton: UIButton {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        commonInit()
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        commonInit()
    }

    func commonInit() {
        layer.cornerRadius = 3
        layer.masksToBounds = true
        backgroundColor = Colors.E9511C
        setTitleColor(.white, for: .normal)
        titleLabel?.font = Fonts.openSansBold(14)
    }
}

Answer 1

@IBDesignable 类 MyButton: UIButton {

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    commonInit()
}

override init(frame: CGRect) {
    super.init(frame: frame)
    commonInit()
}
@IBInspectable var borderColor: UIColor = UIColor.white {
    didSet {
        layer.borderColor = borderColor.cgColor
    }
}
@IBInspectable var cornerRadius: Int = 1 {
    didSet {
        layer.cornerRadius = CGFloat(cornerRadius)
    }
}

func commonInit() {
    layer.cornerRadius = CGFloat(cornerRadius)
    layer.masksToBounds = true
    layer.borderColor = borderColor.cgColor
    //layer.bobackgroundColor = backgroundColor.cgColor // Colors.E9511C
    setTitleColor(.white, for: .normal)
    titleLabel?.font = UIFont.systemFont(ofSize: 14) // Fonts.openSansBold(14)
}

override func prepareForInterfaceBuilder() {
    super.prepareForInterfaceBuilder()
    commonInit()
}

}