modalPresentationStyle formSheet issues on iphone XR, XS Max

Question

I am displaying modal UIViewController with modalPresentationStyle = .formSheet but it has some issues on iphone XR and XS Max. It's displayed behind notch. Image bellow from left side iphone XR, XS, X.

UIViewController use autolayout and is presented like this:

let contentViewController = UINib(nibName: "EditViewController", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! EditViewController

let navController = UINavigationController(rootViewController: contentViewController)

navController.modalPresentationStyle = UIModalPresentationStyle.formSheet
let popover = navController.presentationController!
popover.delegate = self

self.present(navController, animated: true, completion: nil)

delegate:

extension MyController: UIAdaptivePresentationControllerDelegate {

    func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
        return .none
    }
}

There is same issue with modalPresentationStyle = .pageSheet. It works fine with other modalPresentationStyles ie fullscreen

It's on iOS 12.1, swift 3

Any idea how to fix this? Thanks

Answer 1

UIKit does not support that.

The only possibilities are sheet to full screen and page sheet to form sheet on iPad. As specified in the documentation :

In a horizontally compact environment, this option behaves the same as UIModalPresentationFullScreen.

So UIKit already adapts it.

Unfortunately you will have to implement your own custom transition controller.