ios PDFKit displaymode = singlepage only shows the first page of the pdf

Question

I\'m trying to display a pdf on ios via apples PDFKit library, and rather than use PDFDisplayMode.singlePageContinuous mode, I want to stop at page breaks so I\'m trying to

Answer 1

Use the swipe gesture recognizer (UISwipeGestureRecognizer) to let the user swipe the PDF view screen (PDFView) to the left and right.

import UIKit
import PDFKit

class ViewController: UIViewController, PDFViewDelegate {
    // MARK: - Variables

    // MARK: - IBOutlet
    @IBOutlet weak var pdfView: PDFView!

    // MARK: - Life cycle
    override func viewDidLoad() {
        super.viewDidLoad()

        let filePath = "/Users/george/Library/Developer/CoreSimulator/Devices/B5C5791C-3916-4BCB-8EB6-5D3D61C08DC0/data/Containers/Data/Application/4B644584-0025-45A7-9D71-C8F8478E4620/Documents/my PDF.pdf"
        pdfView.document = getDocument(path: filePath)
        pdfView.backgroundColor = .lightGray
        pdfView.autoScales = true
        pdfView.displayMode = .singlePageContinuous
        pdfView.usePageViewController(true, withViewOptions: nil)
        createMenu()
        thumbnail()

        /* swipe gesture */
        let leftSwipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(respondLeftSwipeGesture(_:)))
        leftSwipeGesture.direction = [UISwipeGestureRecognizer.Direction.left]
        self.view.addGestureRecognizer(leftSwipeGesture)
        let rightSwipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(respondRightSwipeGesture(_:)))
        rightSwipeGesture.direction = [UISwipeGestureRecognizer.Direction.right]
        pdfView.addGestureRecognizer(rightSwipeGesture)
    }

    @objc func respondLeftSwipeGesture(_ sender: UISwipeGestureRecognizer) {
        if pdfView.document == nil { return }
        pdfView.goToPreviousPage(self)
    }

    @objc func respondRightSwipeGesture(_ sender: UISwipeGestureRecognizer) {
        if pdfView.document == nil { return }
        pdfView.goToNextPage(self)
    }

    func getDocument(path: String) -> PDFDocument? {
        let pdfURL = URL(fileURLWithPath: path)
        let document = PDFDocument(url: pdfURL)
        return document
    }
}