Ios 将QLEVIEWCONTROLLER添加为子视图将取消图像拖动时的视图

我将QLPreviewController作为子视图添加到我的QLPreviewController WithDownloadView中

然后，当我展示我的QLPreviewController WithDownloadView并让它预览图像时，如果在图像上检测到任何平移，我的QLPreviewController WithDownloadView视图将立即被取消

关于如何阻止视图在拖动时被忽略，有什么想法吗

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我改变了主意，解决了这个问题。我没有将QLEVIEWCONTROLLER添加为子视图，而是将QLEVIEWCONTROLLER子类化，并将我的下载视图添加为子视图

class QuickLookViewController: QLPreviewController {

//Download View Properties
var downloadViewController: DownloadFileViewController?

// MARK: - Application Life Cycle

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    guard let downloadView = self.downloadViewController?.view else { return }
    view.bringSubview(toFront: downloadView)
}

override func viewDidLoad() {
    super.viewDidLoad()
    addDownloadViewIfNeeded()
    downloadAndPreview()
}

// MARK: - Private

private func addDownloadViewIfNeeded() {
    guard self.downloadViewController == nil else { return }

    let downloadViewController = DownloadFileViewController.viewControllerFromStoryboard()
    downloadViewController.view.isHidden = true
    downloadViewController.delegate = self

    addChildViewController(downloadViewController)
    view.addSubview(downloadViewController.view)
    downloadViewController.view.pinFrameToSuperViewBounds()
    downloadViewController.didMove(toParentViewController: self)

    self.downloadViewController = downloadViewController
}

...
}

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你在bugreport.apple.com上注册雷达了吗？如果你看到这样的异常情况，那通常是一种方法。是的，我看到了。非常感谢。参考号是30239588号。