使用 UITapGestureRecognizer 配置位置？

Question

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view
        let tap = UITapGestureRecognizer(target: self, action: #selector(doubleTapped))
        tap.numberOfTapsRequired = 2
        view.addGestureRecognizer(tap)
    
    }
    
    @objc func doubleTapped(sender: UITapGestureRecognizer) {
        let indexPath = self.collectionView.indexPathForItem(at: sender.location(in: sender.view))

        if let unwrapped = indexPath {

由于某种原因，这里的 indexPath 总是为零。有人看到我的代码中的错误吗？

Answer 1

您需要在收藏视图中获取点击位置，而不是在超级视图中。

使用let indexPath = self.collectionView.indexPathForItem(at: sender.location(in: self.collectionView))