如何仅为一个部分显示页脚视图?
正如我发现的那样,我无法通过nil来隐藏其他部分中的页脚视图,因为它会导致崩溃.
override func collectionView(collectionView: UICollectionView,viewForSupplementaryElementOfKind kind: String,atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView { var v : UICollectionReusableView! = nil if kind == UICollectionElementKindSectionHeader { let x = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionHeader,withReuseIdentifier:reuseHeaderIdentifier,forIndexPath:indexPath) as HouseNameReusableView let h = houses[indexPath.section] x.nameLabel.text = h["name"] as? String return x }else if kind == UICollectionElementKindSectionFooter { if indexPath.section == houses.count - 1{ let x = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionFooter,withReuseIdentifier:reuseFooterIdentifier,forIndexPath:indexPath) as FooterCollectionReusableView return x } } return v }