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How to know when user swipes to next page in PDFView of PDFKit?

In my iOS-App I'm using a PDFView with pdfView.usePageViewController(true, withViewOptions: nil).

I want to hide the PDFThumbnailView when the user swipes to another page.

I already looked inside PDFViewDelegate but there's no suitable function to use.

Solution

  • you can try adding observer for PDFViewPageChanged notification like this

    // Add page changed listener
NotificationCenter.default.addObserver(
      self,
      selector: #selector(handlePageChange(notification:)),
      name: Notification.Name.PDFViewPageChanged,
      object: pdfView)

    And then handle the page change event :

    @objc private func handlePageChange(notification: Notification)
{
    // Do your stuff here like hiding PDFThumbnailView...
}

    Hope it helps