Swift UIGestureRecognizer 不工作/不做任何事

Question

我有一个小问题，我现在几个小时都无法解决！我有一个带有标签的简单 ViewController，它链接到我的 ViewController class。我还设置了一个 UIGestureRecognizer 以在单击标签时更改标签的文本。但奇怪的是什么都没有发生。

标签的文本从 Storyboard 中设置的任何内容更改为“Hello”，因此设置是正确的。但是当我点击标签时，没有任何反应。

这是整个 ViewController class:

import UIKit

class PremiumViewController: UIViewController {

    // Views
    @IBOutlet weak var premiumLabel: UILabel!
    
    // View Did Load
    override func viewDidLoad() {
        super.viewDidLoad()
        
        premiumLabel.text = "Hello"

        // Tap listener
        let tap = UIGestureRecognizer(target: self, action: #selector(PremiumViewController.clicked))
        premiumLabel.isUserInteractionEnabled = true
        premiumLabel.addGestureRecognizer(tap)
    }
    
    @objc func clicked() {
        premiumLabel.text = "You clicked me"
    }

}

Answer 1

使用UITapGestureRecognizer代替UIGestureRecognizer

变化自

let tap = UIGestureRecognizer(target: self, action: #selector(PremiumViewController.clicked))

到

let tap = UITapGestureRecognizer(target: self, action: #selector(PremiumViewController.clicked))

Swift UIGestureRecognizer 不工作/不做任何事

Swift UIGestureRecognizer is not working / is not doing anything

xcode

uigesturerecognizer

ios

swift