如何获取 UICollectionView 标头的索引路径? [英] How to get the index path of a UICollectionView header?

问题描述

使用视图的 indexPathForItemAtPoint，我会得到一个单元格的索引路径，但不会得到 UICollectionReusableView(页眉/页脚)——因为它总是返回 nil.

Using the view's indexPathForItemAtPoint, I will get an index path for a cell, but never a UICollectionReusableView (header/footer) -- as it always returns nil.

推荐答案

您应该制作自己的字典，将索引路径映射到标题视图.在您的 collectionView:viewForSupplementaryElementOfKind:atIndexPath: 方法中，在返回之前将视图放入字典中.在您的 collectionView:didEndDisplayingSupplementaryView:forElementOfKind:atIndexPath: 中，从字典中删除视图.

You should make your own dictionary mapping index paths to header views. In your collectionView:viewForSupplementaryElementOfKind:atIndexPath: method, put the view into the dictionary before returning it. In your collectionView:didEndDisplayingSupplementaryView:forElementOfKind:atIndexPath:, remove the view from the dictionary.

这篇关于如何获取 UICollectionView 标头的索引路径?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！