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On iOS, there is the File Provider API to create "virtual folders" (folders where the content is provided by an app). How could I do something similar on MacOS? If you wonder why I would want to do this, it's just that I'm trying to understand how cloud storage apps work.
PS: Sorry for bad English, I'm French.
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The File Provider framework allows you to integrate your cloud storage into the file system on macOS. It uses new APFS features to allow on-demand downloads of user files and folders. The API is entirely in user space.
↳ androidx.core.content.FileProvider. FileProvider is a special subclass of ContentProvider that facilitates secure sharing of files associated with an app by creating a content:// Uri for a file instead of a file:/// Uri . A content URI allows you to grant read and write access using temporary access permissions.
In macOS Big Sur there is a NSFileProviderReplicatedExtension protocol which should "Replicate" the iOS NSFileProviderExtension.
The API appears to be working on macOS 11.3+ and Xcode 12.5 has brought back the required FileProvider Extension target. There is also a workaround in Xcode 12.2 to add the target manually.
During WWDC21 we also got some sample code from Apple, which should make the extension a bit easier to implement.
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