Unable to open Dropbox folders

[zrzka]

System Information

• Pythonista 3.2 (320000), Default interpreter 3.6.1
• iOS 11.2.1, model iPad7,2, resolution (portrait) 2048.0 x 2732.0 @ 2.0
• iOS 11.2.1, model iPhone8,4, resolution (portrait) 640.0 x 1136.0 @ 2.0
• Latest Dropbox app installed from the App Store

Description

Unable to open Dropbox folder. Files work, folders not. See attached videos:

• iPad
• iPhone

Behavior equals , except that there's no alert on iPhone that the Pythonista is unable to open file. (UPDATE: Alert no longer appears on iPad.)

Steps to reproduce

• Reveal file browser
• EXTERNAL FILES, tap on Open...
• Hit Select in the file browser and select some Dropbox folder and then tap on the Open
• Pythonista reveals itself and it looks like file was opened (in my case apps)
• Reveal file browser again, but before you do, focus your eyes on EXTERNAL FILES where you can see that the folder is there, but immediately disappears when the file browser appears

Other applications

There's no issue with other applications like Working Copy or folders from iCloud Drive. Probably Dropbox issue, but it's worth to investigate. I can't say more from the iPad alert (or silence on iPhone). You have access to specific error codes, etc. so you can check what's wrong.

If this is Dropbox issue, feel free to close it, but let us know. In the meanwhile, I marked it as pythonista bug. Thanks.

[kkebo]

I noticed differences between openable and unopenable folders. That is the last letter of returned URL. For example, when trying to open a folder on “On My iPad”, iCloud Drive, or Working Copy, “file:///path/“ will be returned, but when trying to open one on Dropbox or Google Drive, “file:///path” will be returned. Because of that, Pythonista cannot determine whether it is a folder or not.

If you want to make sure of the truth, paste and run the following code on Swift Playgrounds for iPad.

import UIKit
import PlaygroundSupport
import MobileCoreServices

class ViewController: UIViewController, UIDocumentPickerDelegate {
    override func viewDidLoad() {
        let picker = UIDocumentPickerViewController(documentTypes: [kUTTypeFolder as String], in: .open)
        picker.modalPresentationStyle = .pageSheet
        picker.delegate = self
        picker.allowsMultipleSelection = true
        self.present(picker, animated: true)
    }
    
    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
        urls
    }
}

PlaygroundPage.current.liveView = ViewController()