Swift UIRefreshControl to UICollectionView inside UIScrollVi

Question

我在UIScrollView中有UICollectioview，我想添加UIRefreshControl，但它不起作用

private let refreshControl = UIRefreshControl()
 override func viewDidLoad() {
        super.viewDidLoad()
        self.refreshControl.addTarget(self, action: #selector(didPullToRefresh(_:)), for: .valueChanged)
        self.folderCollectionView.alwaysBounceVertical = true
        self.folderCollectionView.bounces  = true
        self.refreshControl.tintColor = UIColor.black
        self.folderCollectionView.refreshControl = refreshControl
}

@objc
    private func didPullToRefresh(_ sender: Any) {
        print("123")
        getFolder(update: true)
        refreshControl.endRefreshing()
    }

在getFolder中，我获取数据并重新加载集合

当我运行集合时，没有拉取更新并且不起作用

我做错了什么

Answer 1

使用这种方式将UIRefreshControl添加到UICollectionView中，请参阅以下代码，希望对您有所帮助。

// Add Refresh Control to Collection View
if #available(iOS 10.0, *) {
    folderCollectionView.refreshControl = refreshControl
} else {
    folderCollectionView.addSubview(refreshControl)
}