Header 在 CollectionView 中未显示 iOS Swift

Question

我想向 Collection 视图的 header 添加几个按钮。从情节提要中启用 'Section Header'。然后拖一个'view'到那个header。并将其背景颜色设置为绿色

但我不明白为什么它不显示。在模拟器中如您所见，只有一个空白的 space 为 header。

Answer 1

使用这个方法

在CollectionHeaderCell

中输入名字

func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {

    switch kind {

    case UICollectionElementKindSectionHeader:

        let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Header", for: indexPath as IndexPath)

        headerView.backgroundColor = UIColor.blue;
        return headerView

    case UICollectionElementKindSectionFooter:
        let footerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Footer", for: indexPath as IndexPath)

        footerView.backgroundColor = UIColor.green;
        return footerView

    default:

        assert(false, "Unexpected element kind")
    }
}

//为每个单元格索引路径创建一个单元格

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

     let cell = collectionView.dequeueReusableCellWithReuseIdentifier("InviteFriendCell", forIndexPath: indexPath)

      let profileimage: UIImageView = (cell.viewWithTag(5) as! UIImageView)

      profileimage.image = UIImage(named:arrayofdata[indexPath.row]["image"]!)
      return cell
 }

Header 在 CollectionView 中未显示 iOS Swift

Header in CollectionView not Displaying iOS Swift

ios

uicollectionview

swift

swift2

swift3