Open PDF file using swift

Question

How can I add a PDF file for an app , where you click on a button to view the file & when you\'re done you get back to screen you were at?

Answer 1

you can use UIDocumentInteractionController to preview file in IOS. In the view controller's file, add a property of type UIDocumentInteractionController

and implement a simple delegate method of it

self.documentInteractionController = UIDocumentInteractionController.init(URL: url)
self.documentInteractionController?.delegate = self
self.documentInteractionController?.presentPreviewAnimated(t‌​rue) 

func documentInteractionControllerViewControllerForPreview(controller: UIDocumentInteractionController) -> UIViewController {
    return self
}

don't forget to add UIDocumentInteractionControllerDelegate in view controller's class

Answer 2

You can use this code in Swift 4

1. Import PDFKit

2. Copy this code

   let pdfView = PDFView()        
   pdfView.translatesAutoresizingMaskIntoConstraints = false
   view.addSubview(pdfView)
   
   pdfView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
   pdfView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
   pdfView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
   pdfView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
   
   guard let path = Bundle.main.url(forResource: "test", withExtension: "pdf") else { return }
   
   if let document = PDFDocument(url: path) {
       pdfView.document = document
   }
   

Answer 3

SWIFT 5

An update to open the file from the Document directory (device) and present preview:

let urlFile = URL(string: pathToFile)
var documentInteractionController: UIDocumentInteractionController!    
self.documentInteractionController = UIDocumentInteractionController.init(url: urlFile!)
self.documentInteractionController?.delegate = self
self.documentInteractionController?.presentPreview(animated: true)

And UIDocumentInteractionControllerDelegate:

extension ViewController: UIDocumentInteractionControllerDelegate {
func documentInteractionControllerViewControllerForPreview(_ controller: UIDocumentInteractionController) -> UIViewController {
     return self
 }
}

If you want to dismiss the document preview you can use:

self.documentInteractionController?.dismissPreview(animated: true)

Answer 4

For Xcode 8.1 and Swift 3.0

Save the PDF file in any folder of your xcode. Suppose the file name is 'Filename.pdf'

 if let pdf = Bundle.main.url(forResource: "Filename", withExtension: "pdf", subdirectory: nil, localization: nil)  {
    let req = NSURLRequest(url: pdf)
    yourWebViewOutletName.loadRequest(req as URLRequest)        
  }

Same will apply if you want to open any html file.

Answer 5

Check out PDFKit from IOS11

Here is an example of a view controller which implements PDFView from PDFKit.

import UIKit
import PDFKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Add PDFView to view controller.
        let pdfView = PDFView(frame: self.view.bounds)
        self.view.addSubview(pdfView)

        // Fit content in PDFView.
        pdfView.autoScales = true

        // Load Sample.pdf file.
        let fileURL = Bundle.main.url(forResource: "Sample", withExtension: "pdf")
        pdfView.document = PDFDocument(url: fileURL!)
    }

}

Answer 6

let openLink = NSURL(string : self.OtherContactorProfileVview.Result.CertificateList[index].CertificateFileLink)

        if #available(iOS 9.0, *) {
            let svc = SFSafariViewController(url: openLink! as URL)
            present(svc, animated: true, completion: nil)
        } else {
            let port : PDFViewer = UIStoryboard.init(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "PDFViewer") as! PDFViewer
            port.strUrl = self.OtherContactorProfileVview.Result.CertificateList[index].CertificateFileLink
            self.navigationController?.pushViewController(port, animated: true)

        }