how to set cornerRadius for only bottom-left,bottom-right and top-left corner textview?

Question

How to set corner radius only only bottom-left,bottom-right and top-left corner textview?

let rectShape = CAShapeLayer()
    rectShape.backgroundColor = UICo         


        

Answer 1

extension UIView {

func roundCorners(_ corners: CACornerMask, radius: CGFloat) {
    if #available(iOS 11, *) {
        self.layer.cornerRadius = radius
        self.layer.maskedCorners = corners
    } else {
        var cornerMask = UIRectCorner()
        if(corners.contains(.layerMinXMinYCorner)){
            cornerMask.insert(.topLeft)
        }
        if(corners.contains(.layerMaxXMinYCorner)){
            cornerMask.insert(.topRight)
        }
        if(corners.contains(.layerMinXMaxYCorner)){
            cornerMask.insert(.bottomLeft)
        }
        if(corners.contains(.layerMaxXMaxYCorner)){
            cornerMask.insert(.bottomRight)
        }
        let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: cornerMask, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        self.layer.mask = mask
    }
}

}