ios - 多个UIImageView上的一键手势

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Can you attach a UIGestureRecognizer to multiple views?

(12个答案)


3年前关闭。




我有2个UIImageView和一个tapGestureRecognizer。

 override func viewDidLoad() {
        // Do any additional setup after loading the view.

        super.viewDidLoad()

        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(cameraTapped(tapGestureRecognizer:)))

        cameraUIImageView.isUserInteractionEnabled = true
        cameraUIImageView.addGestureRecognizer(tapGestureRecognizer)

        plus1UIImageView.isUserInteractionEnabled = true
        plus1UIImageView.addGestureRecognizer(tapGestureRecognizer)
//


    }

我只能点击第二个UIImageView，即plus1UIImageView。

为什么？

最佳答案

UIGestureRecognizer必须仅用于单个视图。您正在两个视图中使用同一对象。尝试这个。

override func viewDidLoad() {
    // Do any additional setup after loading the view.

    super.viewDidLoad()

    let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(cameraTapped(tapGestureRecognizer:)))

    cameraUIImageView.isUserInteractionEnabled = true
    cameraUIImageView.addGestureRecognizer(tapGestureRecognizer)


    let tapGestureRecognizer2 = UITapGestureRecognizer(target: self, action: #selector(cameraTapped(tapGestureRecognizer:)))

    plus1UIImageView.isUserInteractionEnabled = true
    plus1UIImageView.addGestureRecognizer(tapGestureRecognizer2)
}