Currently, I am developing a small document based App for iOS with SwiftUI. I was quite surprised to see that there is no obvious way to save the document’s contents to file after editing. In fact, the default behaviour was that nothing was saved at all after editing my document’s content. On macOS there is at least the possibility to update the change count to force a save later but that is not available on iOS SwiftUI.
Well, there is this hint on stackoverflow to register an undo at the UndoManager even if you do not use it. For some Views that worked for me; for others it didn’t. I was getting tired to spend hours in investigating why this was so. So I was looking for a way to save the document’s content explicitly. This is what I came up with.