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

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)