较小尺寸的按钮不具有layer.cornerRadius圆形

Question

I tried to create a button and style it with that code:

---

    button.tintColor = UIColor.white
    button.contentEdgeInsets = UIEdgeInsets(top: 20, left: 20, bottom: 20, right: 20)
    button.backgroundColor = .clear
    button.layer.cornerRadius = 50
    button.layer.borderWidth = 2
    button.layer.borderColor = UIColor.white.cgColor

---

My button size was 100x100 and if I make it smaller (eg 80x80 as shown below) the border is not round anymore:

How do I get the centered circle round aswell?

Answer 1

use this below code

button.layer.cornerRadius = button.frame.size.width/2

Make sure height and width are equal at every time.

Answer 2

Kindly set corner radius as buttonWidth/2. I assume your button is having equal width and height.

button.layer.cornerRadius = button.frame.size.width/2