UIDocumentBrowserViewController.revealDocument() not working as expected?

Question

n1b0r OP

Created Apr ’18

Replies 3

Boosts 0

Views 1.5k

Participants 3

Hi,

I've an app adopted the iOS 11 UIDocumentBrowserViewController. I've declared my own document type (UTI) and the document creation process worked well.

However, when it's about to "import" a file, I called UIDocumentBrowserViewControlller.revealDocument() by passing the URL I got from application(open: options: ). The completion showed no errors, but I cannot see the document been imported as expected.

The "revealedDocumentURL" is actually pointing to an "Inbox" folder under the app container's Documents folder. Something like:

file:///<App Container>/Dcouments/Inbox/filename.extension

But nothing inside that folder (nor the folder itself) is visible in the DocumentBrowser, nor in the Files app.

Further more, while revealDocument (with importIfNeeded=true) being called, the delegate's documentBrowser(_:didImportDocumentAt:toDestinationURL:) function is never called. But according to the documentation here , it should call the delegate function before calling completion handler.

Can anyone please advice what's the correct way to handle file import with the DocumentBrowserViewController?

Thanks a lot,

-Robin

Boost

Answer 1

Claude31 OP

Apr ’18

Can you show how you define the url ?

I usually get the documents directory with as follows:

    class func dataFilePath() -> String {
      
        let paths = NSSearchPathForDirectoriesInDomains(
            FileManager.SearchPathDirectory.documentDirectory,
            FileManager.SearchPathDomainMask.userDomainMask, true)
        let documentsDirectory = paths[0] as NSString 
        return documentsDirectory.appendingPathComponent("data.archive") as String
    }

May see also:

h ttps://developer.apple.com/documentation/uikit/uidocumentbrowserviewcontroller

0

Answer 2

n1b0r OP

Apr ’18

The scenario is when my app receives a file from other sources (like receiving file from AirDrop, or opening an attachment in Mail), so it goes to:

func application(_ app: UIApplication, open inputURL: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
       // Ensure the URL is a file URL
       guard inputURL.isFileURL else { return false }
               
       // Reveal / import the document at the URL
       guard let documentBrowserViewController = window?.rootViewController as? DocumentBrowserViewController else { return false }

       documentBrowserViewController.revealDocument(at: inputURL, importIfNeeded: true) { (revealedDocumentURL, error) in
            if let error = error {
                // Handle the error appropriately
                print("Failed to reveal the document at URL \(inputURL) with error: '\(error)'")
                return
            }
           
            // Present the Document View Controller for the revealed URL
            documentBrowserViewController.presentDocument(at: revealedDocumentURL!)
        }

        return true
}

(Actually this is part of the Xcode's Document Based App template. And I think I don't have to make my own URL there.)

The question is that, calling revealDocument() does not make the input file visible in the DocumentBrowserViewController.

0

Answer 3

thisisnotmikey OP

Jul ’19

I am experiencing the same issue. Have you resolved it?

0