UIDocumentBrowserViewController empty

user_123632 0
Viewed 1359

I'm building an app using a UIDocumentBrowserViewController. All was working fine (locations and documents appeared, and were creatable, selectable)

All of a sudden, the document browser is showing up empty. No locations, no documents…

enter image description here

Prior to today, the browser was empty in the simulator, but worked fine on a device. Now the problem his "migrated" its way to my iPad. I assume this is a beta issue, but would be grateful to know if anyone else suffering from the same has managed to find a fix / workaround?

Tried…

  • Clean build
  • Deleting module cache / derived data
  • Deleting / re-installing the app
  • Restarting Xcode
  • Restarting iPad
  • Re-installing Xcode
  • Rebooting Mac

I'm beginning to think I'm imagining that it was working in the past!

Xcode 9.0 beta 4 (9M189t)

Update

I just found that using 

let dbvc = UIDocumentBrowserViewController(forOpeningFilesWithContentTypes:[kUTTypePlainText as String])

instead of my custom UTI works. And then reverting to my own UTI again still works.

xcode9-beta uidocumentbrowservc ios11
3 Answers

I had this problem until I add to info.plist one missing parameter in the list of supported document types:

Document Types > Item > Handler Rank (string) Alternate

enter image description here

user_6888200

Are there no files in app's document directory?

if app's document directory is empty, it is not visible in UIDocumentBrowserViewController.

try 

 override func viewDidLoad() {
    super.viewDidLoad()

    let fm = FileManager.default
    let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!

    let filePath = documentsPath + "/myfile.txt"
    if !fm.fileExists(atPath: filePath) {
        fm.createFile(atPath: filePath, contents: nil, attributes: [:])
    }
}
user_109006760
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