UITapGestureRecognizer
UITapGestureRecognizerを追加します。
isUserInteractionEnabled = trueにしないとRecognizerが機能しないようです。
@IBOutlet var userImageView: UIImageView! let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tapUserPhoto(_:))) userImageView.addGestureRecognizer(tapGesture) userImageView.isUserInteractionEnabled = true // これがないとダメ @objc func tapUserPhoto(_ sender: UIImageView) { }