Swift3 iOS -Rounded ImageView in Navigation TitleView Keeps Showing Square? - ios

Question

I have a rounded imageView that I use for the profile pic in my app. I use the code several times throughout the app in tableView cells and on different views in view controllers. The profile pic always displays as round. When I use the below code to set the profile pic to round inside the navItem's titleView it only displays as a square.
Why doesn't it display round in the navItem's titleView?
var url: String?//it's already set with some value
override func viewDidLoad() {
super.viewDidLoad(){
setTitleView(urlStr: url)
{
func setTitleView(urlStr: String?){
let titleView = UIView()
titleView.frame = CGRect(x: 0, y: 0, width: 44, height: 44)
let containerView = UIView()
containerView.translatesAutoresizingMaskIntoConstraints = false
titleView.addSubview(containerView)
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.contentMode = .scaleAspectFill
imageView.layer.cornerRadius = imageView.frame.size.width / 2
imageView.clipsToBounds = true
imageView.layer.borderColor = UIColor.white.cgColor
imageView.layer.borderWidth = 0.5
imageView.backgroundColor = UIColor.white
if let urlStr = urlStr{
let url = URL(string: urlStr)
imageView.sd_setImage(with: url!)
}
containerView.addSubview(imageView)
imageView.leftAnchor.constraint(equalTo: containerView.leftAnchor).isActive = true
imageView.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
imageView.widthAnchor.constraint(equalToConstant: 40).isActive = true
imageView.heightAnchor.constraint(equalToConstant: 40).isActive = true
containerView.centerXAnchor.constraint(equalTo: titleView.centerXAnchor).isActive = true
containerView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true
navigationItem.titleView = titleView
}

Answer 1

Looks like imageView.layer.cornerRadius = imageView.frame.size.width / 2 is set to 0. imageView.frame.size.width is equal to 0 here.
Instead of let imageView = UIImageView(), you can predefine the frame when creating the imageView with let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))