Rounded corners on iOS 13 page sheet

Question

Is there a way to round the corners on an iOS page sheet view controller? Currently, iOS page sheets by default present like this:

But instead, I would like the corners to be like this:

Answer 1

iOS 15 added an API to customize the corner radius of sheets, UISheetPresentationController.preferredCornerRadius:

let myViewController = UIViewController()
myViewController.view.backgroundColor = .systemYellow
myViewController.sheetPresentationController?.preferredCornerRadius = 25
present(myViewController, animated: true, completion: nil)

Answer 2

In your view controller, you can change the view.layer.cornerRadius property to the value you want

override func viewDidLoad() {
    super.viewDidLoad()
    view.layer.cornerRadius = 10.0 // You can freely change this value
}

As an example, the following code:

override func viewDidLoad() {
    super.viewDidLoad()

    view.layer.cornerRadius = 25.0
    view.backgroundColor = .systemPurple
}

gives me the following result: