How to Open the Document Files E.G(.Pdf,.Doc,.Docx) in iOS Mobile When a Button Action Using Swift3.0

How to open the Document files e.g(.pdf,.doc,.docx) in ios mobile when a button action using swift3.0?

Swift 3*, 4*,

To open document and select any document, you are using UIDocumentPickerViewController then all documents presented in your iCloud, Files and in Google Drive will be shown if Google Drive is connected in user device. Then selected document need to download in your app and from there you can show it in WKWebView,

   @IBAction func uploadNewResumeAction(_ sender: Any) {

  /*  let documentPicker = UIDocumentPickerViewController(documentTypes: ["com.apple.iwork.pages.pages", "com.apple.iwork.numbers.numbers", "com.apple.iwork.keynote.key","public.image", "com.apple.application", "public.item","public.data", "public.content", "public.audiovisual-content", "public.movie", "public.audiovisual-content", "public.video", "public.audio", "public.text", "public.data", "public.zip-archive", "com.pkware.zip-archive", "public.composite-content", "public.text"], in: .import) */

    let documentPicker = UIDocumentPickerViewController(documentTypes: ["public.text", "com.apple.iwork.pages.pages", "public.data"], in: .import)

    documentPicker.delegate = self
    present(documentPicker, animated: true, completion: nil)
}

   extension YourViewController: UIDocumentPickerDelegate{

      func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {

                let cico = url as URL
                print(cico)
                print(url)

                print(url.lastPathComponent)

                print(url.pathExtension)

               }
   }

Note: If you intend to select all files the you have to use following code:

  let documentPicker = UIDocumentPickerViewController(documentTypes: ["com.apple.iwork.pages.pages", "com.apple.iwork.numbers.numbers", "com.apple.iwork.keynote.key","public.image", "com.apple.application", "public.item","public.data", "public.content", "public.audiovisual-content", "public.movie", "public.audiovisual-content", "public.video", "public.audio", "public.text", "public.data", "public.zip-archive", "com.pkware.zip-archive", "public.composite-content", "public.text"], in: .import) 

In your action method.

How to open a Link to a PDF with wkwebview

SWIFT 3.* & 4.* *

First you have to download that pdf file into your app, after downloading you have to get that file path, then that file path should be use like following way in WKWebView.

let fileURL = URL(fileURLWithPath: filePathURLData as! String)
//print(fileURL)
webView.loadFileURL(fileURL, allowingReadAccessTo: fileURL)

Here filePathURLData is your actual file path which you have downloaded into your app, you have to convert this into URL, then you need to load that file into WKWebView

Thanks

Hope this will help you.

This will show any file in the WKWebView (doc, docx, xlsx, pdf, google doc, pages & Any textfile)

Open PDF file using swift

If you simply want to view a PDF file you can load it into a UIWebView.

let url : NSURL! = NSURL(string: "http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf")
webView.loadRequest(NSURLRequest(URL: url))

Swift 4.1 :

let url: URL! = URL(string: "http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf")
webView.loadRequest(URLRequest(url: url))

If you'd like to achieve more, a good framework is PSPDFKit.

How to show PDF from NSData in Swift - how to save PDF to documents folder Swift - how to display PDF from saved NSData via WebView in Swift

First of all, that NSData IS your PDF, no need to convert to another data type or use a library to manipulate it at the moment.

For now, simply save the NSData to your documents directory on iOS, which is not a managed persistent store like CoreData or Realm, nor is it UserDefaults. It's a folder with stuff in it.

Save to Documents Folder:

let data = //the stuff from your web request or other method of getting pdf    
let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
let filePath = "\(documentsPath)/myCoolPDF.pdf"
data.writeToFile(filePath, atomically: true)

Now verify that the file is there and open it on your mac. This is to make sure you've saved an actual PDF and not anything else. This is a two step process. First find out where on earth the file went by printing the location of the documents folder from the iOS simulator:

let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let documentsDirectory = paths[0]
print(documentsDirectory)

Now copy that really long filepath and cd [paste location] in terminal to go there, then open myCoolPDF.pdf to open it in Preview! It's magical times!

Now that you have verified that you're dealing with an actual PDF it's time to display that in a WebView since it's quite simple unless you've got your own way of doing so.

Note that you still have to make it so the webview shows up, drag one onto your viewController in a storyboard and make an IBOutlet for it.

let url = NSURL(fileURLWithPath: filePath)
let webView = UIWebView()
webView.loadRequest(NSURLRequest(URL: url))

Obviously this is a quick way to make sure you get the basics going, you don't want to force unwrap unsafely using !.

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