How to create a document-based app using FileDocument and DocumentGroup – SwiftUI

SwiftUI comes with support for document-based apps, which are apps that let users create, edit, and share documents such as text files. In SwiftUI we’re given two main types to work with: the FileDocument protocol to define what a document in our app looks like, and the DocumentGroup struct that gives us a default scene to let users create, open, and save documents.

[markaurelius]

I think the API has changed since the video was made. FileDocument it seems has now been defined differently:

The code I had to use to make it work is different from yours, Paul:

init(configuration: ReadConfiguration) throws {
if let data = {
text = String(decoding: data, as: UTF8.self)
}
}

func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper {
let data = Data(text.utf8)
return data)
}

[cinetagonist]

Nice! But how to show a window with document templates to choose? Before creating a document?

[MaxRovensky]

This is cool but it seems too constrained
If I want to open image files on disk in the app, coreimage them up and export to somewhere else, this looks like it's not for that use case :/

[psacc]

Hi, thanks for your video! I need to read strings and image from an array and convert in a pdf to share. How can I do that? Thanks again!

[candyman]

Great tutorial. I'm wondering if we can create a Pages editor in the similar way?

[aneshc]

Is this the same as the Document based App template?

[MaxLK]

Do you have Storyboard version of this video?

[cinetagonist]

Thanks! But how to add a Core Data stack to it?

[fuermosi]

How do you get the file URL when the file is saved/moved/deleted?

[jorgediazchao]

How would this work with Spreadsheets for example?

[chriswaco]

Looks like they've already deprecated the init and write methods and now use "configurations".

[anandsunku]

How to iterate documents in iCloud folder