如何获取UICollectionView的rect

Question

我想在UICollectionView中找到节头的框架。我对UITableView有类似的情况，为此，我可以通过执行以下操作来获取它的直接：

 CGRect rect = [self.tableView rectForHeaderInSection:section];

有没有办法在UICollectionView中获得相同的结果？谢谢！

Answer 1

对不起，伙计们。这实际上很容易。

 NSIndexPath *indexPath = [NSIndexPath indexPathForItem:0 inSection:section];
 UICollectionViewLayoutAttributes *attributes = [self.collectionView layoutAttributesForSupplementaryElementOfKind:UICollectionElementKindSectionHeader atIndexPath:indexPath];
 CGRect rect = [attributes frame];

Answer 2

@tsuyoski's answer 的 Swift 版本：

let section = 0 // or whatever section you're interested in

let indexPath = IndexPath(item: 0, section: section)
let attributes = collectionView.layoutAttributesForSupplementaryElement(ofKind: UICollectionView.elementKindSectionHeader, at: indexPath)
guard let rect = attributes?.frame else { return }