UIRefreshControl 出现在集合视图项的顶部而不是后面

Question

我有一个 UICollectionView 带有常规拉动刷新实现，但不知何故微调器和 "pull to refresh" 文本出现在集合视图项目上方；

我怎样才能把它放在物品后面？

这就是我将 UIRefreshControll 添加到 UICollectionView

的方式

let refreshControl = UIRefreshControl()
refreshControl.attributedTitle = NSAttributedString(string: "Pull down to refresh")
refreshControl.addTarget(self, action: #selector(pullToRefresh), for: UIControlEvents.valueChanged)
collectionView?.refreshControl = refreshControl

Answer 1

我解决这个问题的方法是将 refreshControll zPosition 更改为每个视图后面的内容如下：

refreshControl.layer.zPosition = -1

希望这对任何人有进一步的帮助。

Answer 2

试试这个：

@IBOutlet weak var collectionView: UICollectionView!

var refresher:UIRefreshControl!

override func viewDidLoad() {

   super.viewDidLoad()

    let refresher = UIRefreshControl()
    self.collectionView!.alwaysBounceVertical = true
    self.refresher.tintColor = UIColor.red
    self.refresher.addTarget(self, action: #selector(loadData), for: .valueChanged)
    self.collectionView!.addSubview(refresher)
}

func loadData() {
   //code to execute during refresher
       .
       .
       .
   stopRefresher()         //Call this to stop refresher
 }

func stopRefresher() {
   self.refresher.endRefreshing()
 }

UIRefreshControl 出现在集合视图项的顶部而不是后面

UIRefreshControl appears on top of collection view items instead of behind

ios

swift3

uicollectionview

uirefreshcontrol