如何将角半径添加到UIView周围的虚线边框

Question

我有一个四舍五入的UIView，并且在其中添加了虚线笔划。

,,,
    var view = CAShapeLayer()
    view.strokeColor = UIColor.red.cgColor
    view.lineDashPattern = [2, 2]
    view.frame = addphotoView.bounds
    view.fillColor = nil
    view.path = UIBezierPath(rect: addphotoView.bounds).cgPath
    view.cornerRadius = 16
    view.masksToBounds = true

    addphotoView.layer.addSublayer(yourViewBorder)

但是view.cornerRadius无法正常工作：

角被清除。

Answer 1

快速解答

您应该将Layer的{​​{1}}舍入。

像这样：

path

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使用扩展程序更好地回答

您可以将所有这些逻辑移至扩展名：

borderLayer.path = UIBezierPath(roundedRect: addphotoView.bounds, byRoundingCorners: .allCorners, cornerRadii: CGSize(width: 16, height: 16)).cgPath

用法：

extension UIView {
    @discardableResult
    func addLineDashedStroke(pattern: [NSNumber]?, radius: CGFloat, color: CGColor) -> CALayer {
        let borderLayer = CAShapeLayer()

        borderLayer.strokeColor = color
        borderLayer.lineDashPattern = pattern
        borderLayer.frame = bounds
        borderLayer.fillColor = nil
        borderLayer.path = UIBezierPath(roundedRect: bounds, byRoundingCorners: .allCorners, cornerRadii: CGSize(width: radius, height: radius)).cgPath

        layer.addSublayer(borderLayer)
        return borderLayer
    }
}