didSelectItemAt没有被调用 [英] didSelectItemAt not being called

问题描述

我准备好要执行收集视图了，我正在尝试执行didSelectItemAt来选择详细视图.但是我只想测试记录每个项目，而不是记录日志.

I have my collection view ready to go and I'm trying to do didSelectItemAt to segue to the detail view. But I just want to test out logging each of the items and it's not logging.

我已经设置了所有代表:

I set all the delegates already:

*

class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, UISearchBarDelegate {*

    @IBOutlet weak var activityIndicatorView: UIActivityIndicatorView!
    @IBOutlet weak var searchBar: UISearchBar!
    @IBOutlet weak var collection: UICollectionView!

    override func viewDidLoad() {
        super.viewDidLoad()
        collection.dataSource = self
        collection.delegate = self
        searchBar.delegate = self

        activityIndicatorView.isHidden = true


        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
        view.addGestureRecognizer(tap)
    }

*

我在做什么错了?

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let movie : Movie

    movie = MOVIE_ARRAY[indexPath.row]
    print(movie.plot)
}

推荐答案

您已在视图上添加了TapGestureRecognizer. TapGestureRecognizer具有属性cancelsTouchesInView.

You have added a TapGestureRecognizer on the view. TapGestureRecognizer has a property cancelsTouchesInView.

-var cancelsTouchesInView:布尔{获取设置}

- var cancelsTouchesInView: Bool { get set }

一个布尔值，影响在识别手势后是否将触摸传递给视图.

A Boolean value affecting whether touches are delivered to a view when a gesture is recognized.

默认情况下为true，将阻止调用didSelectItemAt，因为在识别出轻击之后，触摸不会传递到视图. 您需要像这样将其设置为false:

This is true by default and will prevent calling didSelectItemAt since touches will not be delivered to the view after a tap is recognized. You need to set it to false like this:

let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)

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