How to set corner radius of imageView?

Question

In Objective-C such line

self.mainImageView.layer.cornerRadius = CGRectGetWidth(self.mainImageView.frame)/4.0f;

does its job, I tried it in

Answer 1

The easiest way is to create an UIImageView subclass (I have tried it and it's working perfectly on iPhone 7 and XCode 8):

class CIRoundedImageView: UIImageView {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func awakeFromNib() {

        self.layoutIfNeeded()
        layer.cornerRadius = self.frame.height / 2.0
        layer.masksToBounds = true
    }
}

and then you can also set a border:

imageView.layer.borderWidth = 2.0

imageView.layer.borderColor = UIColor.blackColor().CGColor