AppDataModel is retained

Hi,

In the scanning objects using object capture project, when the content view is dismissed the AppDataModel is always retained and the deinit is never called.

@StateObject var appModel: AppDataModel = AppDataModel.instance

I am presenting the contentView using a UIHostingController

       let hostingController = UIHostingController(rootView: ContentView())
        hostingController.modalPresentationStyle = .fullScreen
        present(hostingController, animated: true)

I have tried to manually detach the listeners and setting the objectCaptureSession to nil.

In the debug memory graph there is a coachingoverlay retaining the AppDataModel.

I want to remove the appModel from memory when the contentView is dismissed.

Any suggestions?

Up vote post of gebs Down vote post of gebs
621 views
Posted by
gebs
Reply
Add a Comment

Replies

If instance is a singleton, then that is the cause of your retain issue. @StateObject is all you need with AppDataModel inited.

@StateObject var appModel = AppDataModel()
Posted by
MobileTen
Up vote reply of MobileTen Down vote reply of MobileTen

  • Thank you for your reply. I tried it and still there is a retain

    —
    gebs
Add a Comment

Here is the memory graph:

I've tried canceling the objectCaptureSession :

   objectCaptureSession?.cancel()
   objectCaptureSession = nil

and detaching the listeners

  for sub in subscriptions {
            sub.cancel()
        }
        subscriptions = Set<AnyCancellable>()

Could it be a leak in the ARCoachingOverlayView?

Posted by
gebs
Up vote reply of gebs Down vote reply of gebs
Add a Comment