UIDocument not saving to file despite indicating success

Question

I\'m trying to open, modify, and save a file in iCloud Drive using UIDocument. When I call save(to:for:completionHandler:) with the file location and u

Answer 1

In addition to the above answers, another cause of this can be that there's an error during the save process unrelated to contents(forType:).

For example, if you implement fileAttributesToWrite(to:for:) and throw an error, then this can cause a UIDocumentState.savingError even though contents(forType:) returns the correct data.