圆角虚线

圆角虚线

let borderLayer = CAShapeLayer()

        borderLayer.strokeColor = UIColor.red.cgColor

                borderLayer.lineDashPattern = [3,3]

                borderLayer.backgroundColor = UIColor.clear.cgColor

                borderLayer.fillColor = UIColor.clear.cgColor

        bgView.layer.addSublayer(borderLayer)

        borderLayer.path = UIBezierPath(roundedRect: bgView.bounds, cornerRadius: 8).cgPath