collectionView didSelectItemAt indexPath not called swift
<p>I have a custom view which hold a collection view set like below.</p>

<pre><code>func setupCollectionView() {
    let layout = UICollectionViewFlowLayout()
    layout.sectionInset = UIEdgeInsets(top: scaled(height: 15), left: scaled(width: 35), bottom: scaled(height: 15), right: scaled(width: 35))
    layout.itemSize = CGSize(width: scaled(width: 30), height: scaled(width: 30))
    layout.minimumLineSpacing = 15
    layout.minimumInteritemSpacing = 30
    collectionView = UICollectionView(frame: CGRect.zero, collectionViewLayout: layout)
    collectionView.showsVerticalScrollIndicator = false
    collectionView.showsHorizontalScrollIndicator = false
    collectionView.register(THTexasHoldemEmojiCell.self, forCellWithReuseIdentifier: THTexasHoldemEmojiCell.className)
}
</code></pre>

<p>and delegate functions</p>

<pre><code>extension THTexasHoldemEmojisView {

    func setupDelegates() {
        collectionView.dataSource = self
        collectionView.delegate = self
    }

}

extension THTexasHoldemEmojisView: UICollectionViewDelegate {

    func collectionView(_ collectionView: UICollectionView, didHighlightItemAt indexPath: IndexPath) {
        print("did highlight item")
    }

    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        print("did select item")

    }

}
</code></pre>

<p>The weird thing is the didHighlightItem function could get called, but didSelectItem will not. Did I missed something here? Thanks for any help.</p>

<p>My views connection is UIViewController(THController) holds the UIView(THEmojisView), THEmojisView holds the collection view.
In the THController i've got a lot of views and actions, but not cover the THEmojisView.
Is it possible that touchesBegan(_ touches: Set, with event: UIEvent?) of THController would affect the delegate funcs of the collection view ?</p>