scrollViewDrivingOverlay for multiple child views

[said13]

I have controller with multiple controllers. And I have scrollView in every child controller.

I need to call

    func overlayContainerViewController(_ containerViewController: OverlayContainerViewController,
                                        scrollViewDrivingOverlay overlayViewController: UIViewController) -> UIScrollView?

func every time I change visible child view. How can I solve it?

[said13]

I tried like this but this func only calls once.

    func overlayContainerViewController(_ containerViewController: OverlayContainerViewController,
                                        scrollViewDrivingOverlay overlayViewController: UIViewController) -> UIScrollView? {
        switch self.cardVC.filterScrollView.selectedTitle {
        case "a":
            return self.cardVC.aVC.scrollView
        case "b":
            return self.cardVC.bVC.scrollView
        case "c":
            return self.cardVC.cVC.tableView
        case "d":
            return self.cardVC.dVC.scrollView
        default: return nil
        }
    }

[gaetanzanella]

Use the drivingScrollView property instead: containerController.drivingScrollView = myScrollView