如何快速获取集合视图的标题？

Question

如何在DidSelectItemAtIndexPath上获取集合视图的Header，以便在选择项目时更改header的文本。

Answer 1

您可以使用：

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath){
    let indexHeaderForSection = NSIndexPath(row: 0, section: indexPath.section) // Get the indexPath of your header for your selected cell
    let header = collectionView.viewForSupplementaryElementOfKind(indexHeaderForSection)
}