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Accepted
Rogelio Sanchez
Asked: 2020-12-27 19:47:14 +0800 CST 2020-12-27 19:47:14 +0800 CST

UIButton custom class

  • 772

I have the following custom class of a UIButton, but adding it to a button in Xcode fails to make the changes reflect. Does anyone know what the problem is?

import UIKit
class BotonBordesRedondeados: UIButton {

    // Only override draw() if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    /*override func draw(_ rect: CGRect) {
        // Drawing code
        setup()
    }*/


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

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


    func setup () {

        self.layer.backgroundColor = ColorUtils.hexStringToUIColor(hex: "#6B00FF") as! CGColor

        self.backgroundColor = ColorUtils.hexStringToUIColor(hex: "#6B00FF")

        layer.borderColor = ColorUtils.hexStringToUIColor(hex: "#6B00FF").cgColor
        layer.cornerRadius = 20
        layer.borderWidth = 2.0

    }

}
swift

1 Answers

  1. Best Answer

    Assuming the problem is a EXC_BAD_INSTRUCTION, it is caused by a forced downcast from UIColora CGColor. Try to change the

    self.layer.backgroundColor = ColorUtils.hexStringToUIColor(hex: "#6B00FF") as! CGColor

    for

    self.layer.backgroundColor = ColorUtils.hexStringToUIColor(hex: "#6B00FF").cgColor

    How did you do it for him borderColor?

    (Or you can even delete the statement entirely, since you're also assigning the same color to backgroundColordel UIView.)

    If the problem is that the rounded edges are not showing, then just put inside your setup():

    layer.maskToBounds = true

    (Or in the button's Attributes Inspector check the box in the DrawingClip to Bounds section .)

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