Ios 访问'内的值<&燃气轮机'；签名

我有一个手势识别器，看起来像这样：

@objc func handleTap(_ sender: UITapGestureRecognizer) {
    var currentImage = sender.view
    print(currentImage)

}

var tap = UITapGestureRecognizer()

override func viewDidLoad() {
    super.viewDidLoad()

    tap = UITapGestureRecognizer(target: self, action: #selector(ViewController.handleTap(_:)))
    tap.numberOfTapsRequired = 1
    tap.numberOfTouchesRequired = 1

    imageView.addGestureRecognizer(tap)
    imageView.isUserInteractionEnabled = true
}

并打印出这个：

Optional(<UIImageView: 0x7ff72601ddd0; frame = (0 0; 414 414); opaque = NO; gestureRecognizers = <NSArray: 0x600000b541e0>; layer = <CALayer: 0x6000005be0c0>>)

你可以用

if let  currentImage = sender.view as? UIImageView {

}

如果100%确定，也可以直接

let  currentImage = sender.view as! UIImageView

或

你可以用

if let  currentImage = sender.view as? UIImageView {

}

如果100%确定，也可以直接

let  currentImage = sender.view as! UIImageView

或