How to control page display to PDF loaded in UIWebView for iOS (go to page)

Question

I\'m developing an app which displays a PDF embedded in a WebView this is my code:

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSURL *urlremoto = [NS         


        

Answer 1

Its late but may be helpful,

For iOS less than 11.0

func webViewDidFinishLoad(_ webView: UIWebView)
    {

        var pdfPageHeight:CGFloat = 0

        let a = webView.scrollView.subviews

        for var view in a
        {
            if view.isKind(of: NSClassFromString("UIWebPDFView")!)
            {
                let b = view.subviews

                for var iview in b
                {
                    if iview.isKind(of: NSClassFromString("UIPDFPageView")!)
                    {
                        pdfPageHeight = iview.bounds.size.height

                        break
                    }
                }
            }
        }

        webView.scrollView.setContentOffset(CGPoint(x: 0, y: CGFloat((pagenumber - 1)   + 1 )*pdfPageHeight), animated: true)

    }

For iOS 11 and greater

var pdfdocumentURL: URL?

    @IBOutlet weak var titleLbl: UILabel!
    @IBOutlet weak var pdfview: PDFView!
    var pagenumber = 1



    override func viewDidLoad()
    {
        super.viewDidLoad()
        self.titleLbl.text = titleStr

       let pdfdocument = PDFDocument(url: pdfdocumentURL!)

        pdfview.document = pdfdocument
        pdfview.displayMode = PDFDisplayMode.singlePageContinuous
        pdfview.autoScales = true

        pagenumber = pagenumber - 1
        if let page = pdfdocument?.page(at: pagenumber) {
            pdfview.go(to: page)
        }


    }