swiftui design button corner radius not working code example

Example 1: add top corner radius swift

extension UIView {
   func roundCorners(corners: UIRectCorner, radius: CGFloat) {
        let path = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        layer.mask = mask
    }
}

Example 2: add border to button swiftui

Button(action: {
        print("sign up bin tapped")
    }) {
        Text("SIGN UP")
            .frame(minWidth: 0, maxWidth: .infinity)
            .font(.system(size: 18))
            .padding()
            .foregroundColor(.white)
            .overlay(
                RoundedRectangle(cornerRadius: 25)
                    .stroke(Color.white, lineWidth: 2)
        )
    }

Example 3: add corner radius to uiview swift

view.layer.cornerRadius = 25
view.layer.masksToBounds = true