ios-swift-为图片控件添加点击事件

@IBOutlet var img_guanggao: UIImageView!
    override func viewDidLoad() {
        super.viewDidLoad()
        let imgClick = UITapGestureRecognizer(target: self, action: #selector(imAction))
        img_guanggao.addGestureRecognizer(imgClick)
        //开启 isUserInteractionEnabled 手势否则点击事件会没有反应
        img_guanggao.isUserInteractionEnabled = true
    }

 //点击事件方法
 @objc func imAction() -> Void {
        print("图片点击事件")
 }