NSFileProviderManager.signalEnumerator does not trigger update of UIDocumentBrowserViewController

Marcin Krzyzanowski

Last update: Dec 11, 2021

Related tags

Overview

FB9715717

Which area are you seeing an issue with?

FileProvider Framework Incorrect/Unexpected Behavior

Subject

NSFileProviderManager.signalEnumerator does not trigger update of UIDocumentBrowserViewController.

Description

Please find attached sample project that demonstrate the issue, along with the recorded video.

Class SessionManager calls NSFileProviderManager.default.signalEnumerator(for: .rootContainer) and extension receives it. The current SessionManage.shared.state value is properly updated from the app, and FileProvider extension gets correct value. The problem is that when FileProviderExtension.item(for:) or FileProviderExtension.enumerator(for:) throw error NSFileProviderError(.notAuthenticated), the UIDocumentBrowserViewController visible to the user does not actually update its view. To refresh the view user has to navigate outside and back.

Simulator.Screen.Recording.-.iPhone.12.-.2021-10-20.at.16.25.59.mp4

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Owner

Marcin Krzyzanowski

16yo. Passionate about open source & developer productivity. You can follow me on Twitter @krzyzanowskim

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