How to wrap UIImagePickerController, UIDocumentPickerViewController, etc ?

[wltrup]

Hello,

I'm trying to wrap some Apple APIs for selecting documents (images from the user's photo library and documents from iCloud) but I'm running into a problem and I don't have a good solution. I'm hoping someone can offer one.

The problem is that the APIs' coordinator delegate methods are invoked after the picker view controller is already dismissed so driving their presentation through state doesn't seem possible. If the reducer intercepts the dismiss action, the coordinator delegate method hasn't been executed yet so we don't know yet what image or document has been picked but if the reducer attempts to intercept an action sent by the coordinator, that action is never handled because the picker has already been dismissed by then and the destination state is already set to nil in the presenting scene.

I have a working vanilla SwiftUI solution using @State properties (SwiftUI does the right thing in that it updates those properties when the coordinator delegate methods are executed, even if the presented picker is already dismissed) but then how do I connect those @State properties to TCA? Is it ok to have a property observer attached to those @State properties and fire TCA actions from within them? That doesn't sound right to me.

Also, a separate issue is: how to control the dependency on those APIs? It's not clear to me how I should go about that either but, at the moment, that's a lower-priority issue for me.

Any help would be much appreciated. Many thanks in advance.

[Budyn]

In case someone is looking for the solution for wrapping the UIDocumentPickerViewController for TCA and fixing the dismiss action issue - my workaround was to use the UIDocumentBrowserViewController instead.

It doesn't send a dismiss action after selecting a document. It allows us to control the dismissal process manually.

[wltrup]

That's an interesting idea. I'll give that a go. Thanks!!