How to set imageView in circle like imageContacts in Swift correctly?

Fast and Simple solution.

How to mask UIImage to Circle without cropping with Swift.

extension UIImageView {
  public func maskCircle(anyImage: UIImage) {
    self.contentMode = UIViewContentMode.ScaleAspectFill
    self.layer.cornerRadius = self.frame.height / 2
    self.layer.masksToBounds = false
    self.clipsToBounds = true

   // make square(* must to make circle), 
   // resize(reduce the kilobyte) and 
   // fix rotation.
   self.image = anyImage
  }
}

How to call:

let anyAvatarImage:UIImage = UIImage(named: "avatar")!
avatarImageView.maskCircle(anyAvatarImage)

What frame size are you using for image? I can get a perfect circle if I set the frame to be a square.

let image = UIImageView(frame: CGRectMake(0, 0, 100, 100))

This is solution which I have used in my app:

var image: UIImage = UIImage(named: "imageName")
imageView.layer.borderWidth = 1.0
imageView.layer.masksToBounds = false
imageView.layer.borderColor = UIColor.whiteColor().CGColor
imageView.layer.cornerRadius = image.frame.size.width/2
imageView.clipsToBounds = true

Swift 4.0

let image = UIImage(named: "imageName")
imageView.layer.borderWidth = 1.0
imageView.layer.masksToBounds = false
imageView.layer.borderColor = UIColor.white.cgColor
imageView.layer.cornerRadius = image.frame.size.width / 2
imageView.clipsToBounds = true