Swift UIActivityViewController only showing one item when exporting as text

I'm trying to allow the user to export a list of items to notes but for some reason, it's only exporting the first item and not the entire list like I would hope it was going to. This is my attempt at doing this...

 guard let listId = list?.id else { return }

    let ref = Database.database().reference().child("lists").child(listId).child("list-items")
    ref.observe(.value) { (snapshot) in
        guard let dict = snapshot.value as? [String: Any] else { return }
        dict.forEach({ (key, value) in
            let itemRef = Database.database().reference().child("items").child(key)
            itemRef.observeSingleEvent(of: .value, with: { (snapshot) in

                guard let dictionary = snapshot.value as? [String: Any] else { return }

                guard let itemName = dictionary["item"] as? String else { return }

                let activityController = UIActivityViewController(activityItems: [itemName], applicationActivities: nil)
                self.present(activityController, animated: true, completion: nil)
            })
        })
    }