ios - 如何为 UIView 的任何特定边缘添加虚线边框？

Question

如何只在 UIView 的某边添加虚线边框？引用Dashed line border around UIView链接，但在给出 View 所有边缘的路径时我有点困惑。好吧，这是我在 View 的特定一侧添加直线边框的代码:

func addRightBorder(with color: UIColor, andWidth borderWidth: CGFloat,view:UIView) {

            let border = UIView()
            border.backgroundColor = color
            border.autoresizingMask = [.flexibleHeight, .flexibleLeftMargin]
            border.frame = CGRect(x: view.frame.size.width - borderWidth, y: 0, width: borderWidth, height: view.frame.size.height)

            //border.addDashedLine(color: UIColor.red)
            border.addDashedLine(color: UIColor.red)
            view.addSubview(border)
        }*

除了虚线/点线，我怎样才能达到同样的效果？

Answer 1

在我的一个应用程序中，我也需要类似的东西，因此我创建了 UIView Extension。

看看我的代码片段，

extension UIView {
func removeDashedLine() {
    _ = layer.sublayers?.filter({ $0.name == "DashedTopLine" }).map({ $0.removeFromSuperlayer() })
}

func addDashedLine(_ path: UIBezierPath ,pattern : [NSNumber] = [1, 5], color: UIColor = UIColor.red) {

    self.backgroundColor = UIColor.clear

    let shapeLayer: CAShapeLayer = CAShapeLayer()
    let frameSize = self.frame.size
    let shapeRect = CGRect(x: 0, y: 0, width: frameSize.width, height: frameSize.height)

    shapeLayer.name = "DashedTopLine"
    shapeLayer.frame = shapeRect
    //shapeLayer.position = CGPoint(x: frameSize.width / 2, y: frameSize.height / 2)
    shapeLayer.fillColor = UIColor.clear.cgColor
    shapeLayer.strokeColor = color.cgColor
    shapeLayer.lineWidth = 1
    shapeLayer.lineJoin = kCALineJoinRound
    shapeLayer.lineDashPattern = pattern

    shapeLayer.path = nil
    shapeLayer.path = path.cgPath
    self.layer.insertSublayer(shapeLayer, at: 0)

}
}

它可能无法完全满足您的要求，但应该可以帮助您