How to handle FileProvider notAuthenticated error in macOS?

Question

Created Oct ’23

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I am running a similar code in FileProvider extension, which throws an notAuthenticated error if the user is not logged in. How do I make user to launch the parent app for the authentication?

func enumerateItems(for observer: NSFileProviderEnumerationObserver, startingAt page: NSFileProviderPage) {

 if(isSignedOut){
            observer.finishEnumeratingWithError(NSFileProviderError(.notAuthenticated))
            return
        }
}

And in the Finder it shows

The right corner has Sign in button how do get action control of that button?

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Answer 1

Engineer OP

Apple

Oct ’23

You should implement the FileProviderUI extension point. This will allow you to present UI when the Sign In button is pressed. It is a separate extension point from FileProvider.

See this documentation for the not authenticated error specifically: https://developer.apple.com/documentation/fileproviderui/fpuiactionextensionviewcontroller/2919962-prepareforerror?language=objc

The FruitBasket sample code also has implemented this authentication flow. You can download that here: https://developer.apple.com/documentation/fileprovider/replicated_file_provider_extension/synchronizing_files_using_file_provider_extensions?language=objc

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