Change UIButton border when it's disabled

Question

I want to hide the border of a button when it's disabled. When it's enabled, I set the border like this:

_btnInit.layer.borderWidth = 1;
_btnInit.layer.borderColor = [[UIColor grayColor]CGColor];

And when it's disabled, I want to delete the border.

Like in the picture. The left is in the disabled state and the right is at the normal state.

Answer 1

Subclass UIButton and override isEnabled property like this,

override var isEnabled: Bool {
    didSet {
        if isEnabled {
            self.layer.borderColor = UIColor.black.cgColor
            self.layer.borderWidth = 1.0
        } else {
            self.layer.borderWidth = 0.0
        }
    }
}