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swifttextviewrounded-corners

How to set layer cornerRadius for only bottom-left, bottom-right, and top-left corner?

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

let rectShape = CAShapeLayer()
rectShape.backgroundColor = UIColor.redColor().CGColor
rectShape.bounds = messages.frame
rectShape.position = messages.center
rectShape.path = UIBezierPath(roundedRect: messages.bounds, byRoundingCorners: .BottomLeft | .TopRight, cornerRadii: CGSize(width: 20, height: 20)).CGPath

messages.layer.addSublayer(rectShape)

this code creates two rects. I dont know why.

Solution

  • You just need to mask the layer as shown below:

    For Swift 3:

    let rectShape = CAShapeLayer()
rectShape.bounds = self.myView.frame
rectShape.position = self.myView.center
rectShape.path = UIBezierPath(roundedRect: self.myView.bounds, byRoundingCorners: [.bottomLeft , .bottomRight , .topLeft], cornerRadii: CGSize(width: 20, height: 20)).cgPath

self.myView.layer.backgroundColor = UIColor.green.cgColor
//Here I'm masking the textView's layer with rectShape layer
self.myView.layer.mask = rectShape

    Lower Version:

    let rectShape = CAShapeLayer()
rectShape.bounds = self.myView.frame
rectShape.position = self.myView.center
rectShape.path = UIBezierPath(roundedRect: self.myView.bounds, byRoundingCorners: .BottomLeft | .BottomRight | .TopLeft, cornerRadii: CGSize(width: 20, height: 20)).CGPath

self.myView.layer.backgroundColor = UIColor.greenColor().CGColor
//Here I'm masking the textView's layer with rectShape layer
self.myView.layer.mask = rectShape