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

(swift 4/iOS 11) Just simply say for bottom:

yourView.clipsToBounds = true 
yourView.layer.cornerRadius = 10
yourView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner]

for Up:

yourView.clipsToBounds = true 
yourView.layer.cornerRadius = 10
yourView.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner]

in your case:

yourView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner, .layerMinXMinYCorner]

Hope this help :)

Answer 2

issue solved right top and right bottom work now

Tested code in iOS 9 , 10 , 11 version

 extension UIView {
        func roundCorners(_ corners:UIRectCorner,_ cormerMask:CACornerMask, radius: CGFloat) {
            if #available(iOS 11.0, *){
                self.clipsToBounds = false
                self.layer.cornerRadius = radius
                self.layer.maskedCorners = cormerMask
            }else{
                let rectShape = CAShapeLayer()
                rectShape.bounds = self.frame
                rectShape.position = self.center
                rectShape.path = UIBezierPath(roundedRect: self.bounds,    byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius)).cgPath
                self.layer.mask = rectShape
            }
        }
        
    }

Answer 3

A better answer for both iOS 11 and iOS 10 bottom corner would be

 if #available(iOS 11.0, *){
        view.clipsToBounds = true
        view.layer.cornerRadius = 10
        view.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner]
    }else{
       let rectShape = CAShapeLayer()
       rectShape.bounds = view.frame
       rectShape.position = view.center
       rectShape.path = UIBezierPath(roundedRect: view.bounds,    byRoundingCorners: [.bottomLeft , .bottomRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
      view.layer.backgroundColor = UIColor.green.cgColor
      view.layer.mask = rectShape
  }

in case this didnt work on iOS 10 and below, try running the code in viewDidLayoutSubviews() of your viewcontroller class like this

override func viewDidLayoutSubviews() {
    if #available(iOS 11.0, *){
    }else{
       let rectShape = CAShapeLayer()
       rectShape.bounds = view.frame
       rectShape.position = view.center
       rectShape.path = UIBezierPath(roundedRect: view.bounds,    byRoundingCorners: [.bottomLeft , .bottomRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
       view.layer.backgroundColor = UIColor.green.cgColor
       view.layer.mask = rectShape
}

Answer 4

Here is an extension for iOS 11+

 import Foundation
 import UIKit

 extension UIView {

   func roundCorners(_ corners: CACornerMask, radius: CGFloat, borderColor: UIColor, borderWidth: CGFloat) {
       self.layer.maskedCorners = corners
       self.layer.cornerRadius = radius
       self.layer.borderWidth = borderWidth
       self.layer.borderColor = borderColor.cgColor

   }

 }

Usage:-

self.yourView.roundCorners([.layerMaxXMaxYCorner, .layerMaxXMinYCorner], radius: 20.0, borderColor: UIColor.green, borderWidth: 1)

Answer 5

ez way

for subview & POPUPs [Swift 5]

override func layoutSublayers(of layer: CALayer) {
    searchBarPopup.clipsToBounds = true
    searchBarPopup.layer.cornerRadius = 10
    searchBarPopup.layer.maskedCorners = [ .layerMaxXMinYCorner, .layerMinXMinYCorner]
}

output:

image

Answer 6

The best solution I could come up with all of the above solution is this.

extension UIView {
    func roundCorners(_ corners: UIRectCorner, radius: CGFloat) {
        if #available(iOS 11, *) {
            var cornerMask = CACornerMask()
            if(corners.contains(.topLeft)){
                cornerMask.insert(.layerMinXMinYCorner)
            }
            if(corners.contains(.topRight)){
                cornerMask.insert(.layerMaxXMinYCorner)
            }
            if(corners.contains(.bottomLeft)){
                cornerMask.insert(.layerMinXMaxYCorner)
            }
            if(corners.contains(.bottomRight)){
                cornerMask.insert(.layerMaxXMaxYCorner)
            }
            self.layer.cornerRadius = radius
            self.layer.maskedCorners = cornerMask

        } else {
            let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
            let mask = CAShapeLayer()
            mask.path = path.cgPath
            self.layer.mask = mask
        }
    }
}

I believe that this way the implementation is easy while selecting the sides.

view.roundCorners([.bottomLeft, .bottomRight, .topLeft], radius: 16)