ios - header 未显示在 UICollectionViewController Swift 中

Question

我正在尝试向我的 UICollectionViewController 添加 header 。我已经通过 Storyboard完成了这一切。当我运行该应用程序时，它没有显示。

这是我要在标题中显示的内容:

override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

    let header = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionHeader, withReuseIdentifier: "Header", forIndexPath: indexPath) as! ProfileCollectionReusableView

    header.editProfileButton.layer.cornerRadius = 5
    header.nameLabel.adjustsFontSizeToFitWidth = true
    header.nameLabel.text = PFUser.currentUser()!["name"] as? String

    header.profilePictureImageView.layer.cornerRadius = header.profilePictureImageView.frame.size.height/2
    header.profilePictureImageView.layer.masksToBounds = true

    header.profilePictureImageView.layer.borderColor = UIColor.whiteColor().CGColor

    return header

}

我在控制台上没有看到任何错误，应用程序也没有崩溃。只有一个白色屏幕，导航栏标题已更新为用户用户名。

Answer 1

如果使用 .xib

let nib1:UINib = UINib(nibName: "ScheduleHeaderView", bundle: nil)

self.myCollection.register(nib1, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "ScheduleHeaderView")

设置页眉大小

let layout = self.myCollection.collectionViewLayout as! UICollectionViewFlowLayout
layout.headerReferenceSize = CGSize(width: 50, height: 180)

UICollectionViewDataSource

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

    let header:ScheduleHeaderView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "ScheduleHeaderView", for: indexPath) as! ScheduleHeaderView

    return header
}