1

Having issues with my UIDocumentInteractionController. I am trying to handle unsupported file types by transferring to apps that support them. Below is my relevant code.

 class AttachmentsView: UICollectionView, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, UIDocumentInteractionControllerDelegate {

 var docController: UIDocumentInteractionController!


func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

        switch filetype {

        case: .image:
        return

        case: .document:
        return

        case: .audio:
        return

        case: .video:
        return

        case .unknown:
        let unknownFile = files[(indexPath as NSIndexPath).item]

        guard let fileURL = unknownFile.fullPath else {

            return
        }

        self.docController = UIDocumentInteractionController(url: fileURL)
        self.docController.delegate = self
        self.docController.url = fileURL

        self.docController.presentOpenInMenu(from: (superview?.frame)!, in: self, animated: true)
        return
 }
}

Here is what my fileURL looks like - 

file:///private/var/mobile/Containers/Data/Application/1E67D26D-B9FE-4455-8D30-6A4FED07071E/tmp/folder_attachments/a9500123-c5e6-469b-8867-af72050f453e/1b177057-c507-445a-a8a0-b7b349ae79c6.zip

In this example it's a .zip file. The UIDocumentInteractionController comes up just fine as an activity sheet type view. Shows AirDrop, Add to Notes, Add to Health, Import with Dropbox and a few more. I can also add to iCloud drive.

When I tap on the Dropbox option, It goes through:

func documentInteractionController(_ controller: UIDocumentInteractionController, willBeginSendingToApplication application: String?) {
    print("begin sending")
}

But does not go through:

func documentInteractionController(_ controller: UIDocumentInteractionController, didEndSendingToApplication application: String?) {
    print("completed")
}

Another hint is when I tap AirDrop I get Error = "Error Domain=SFOperation Code=-5 \"The transfer failed because you tried to send an invalid file.\"

Any idea why this might be happening? Thank you.

Michael O'Rourke
  • 85
  • 10

1 Answers1

-1

Your file path shows the answer: you've built the path in a wrong way, so it points to the private area. You can use Bundle's pathForResource approach to make sure the file path is valid, or build the path starting with e.g. NSSearchPathForDirectoriesInDomains, converting it to URL (using URL(fileURLWithPath: folderPath)) and then appending components using appendingPathComponent.

MonsterSale
  • 39
  • 2