swift - 点击单元格并获取索引

Question

当我点击一个单元格时，我想接收索引或其他特定于该单元格的标识符。该代码可以正常工作并进入 tapped 功能。但是我怎样才能收到索引或类似的东西呢？

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("ShowCell", forIndexPath: indexPath) as UICollectionViewCell

    if cell.gestureRecognizers?.count == nil {
        let tap = UITapGestureRecognizer(target: self, action: "tapped:")
        tap.allowedPressTypes = [NSNumber(integer: UIPressType.Select.rawValue)]
        cell.addGestureRecognizer(tap)
    }

    return cell
}

func tapped(sender: UITapGestureRecognizer) {
    print("tap")  
}

Answer 1

Swift 4 - 4.2 - 返回点击单元格的索引。

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let cellIndex = indexPath[1] // try without [1] returns a list.
print(indexPath[1])
chapterIndexDelegate.didTapChapterSelection(chapterIndex: test)
}