无法将自定义IBDesignable类链接到情节提要上的UIButton

Question

How do I connect IBDesignable custom class to UIButton?

Code

import UIKit

@IBDesignable class MyButton: UIView {
    @IBInspectable var borderColor: UIColor = UIColor.clear {
        didSet {
            layer.borderColor = borderColor.cgColor
        }
    }

    @IBInspectable var borderWidth: CGFloat = 0 {
        didSet {
            layer.borderWidth = borderWidth
        }
    }

    @IBInspectable var cornerRadius: CGFloat = 0 {
        didSet {
            layer.cornerRadius = cornerRadius
        }
    }
}

The name of the file is MyButton.swift

It doesn't show MyButton as the class? How would I fix this problem?

Answer 1

您可能需要MyButton继承自UIButton，而不是UIView。

Answer 2

You can only link custom classes to objects of the same type, or a type it inherits from. Instead of

@IBDesignable class MyButton: UIView {

you probably want

@IBDesignable class MyButton: UIButton {

or link it to a UIView object instead