标签: uisheetpresentationcontroller

参考代码：

let navigationController = UINavigationController(rootViewController: UIViewController());

navigationController.modalPresentationStyle = .formSheet;
if let sheet = navigationController.sheetPresentationController {
    sheet.detents = [.medium(), .large()];
    sheet.prefersGrabberVisible = true;
    sheet.largestUndimmedDetentIdentifier = .medium;
    sheet.prefersScrollingExpandsWhenScrolledToEdge = false;
}

present(navigationController, animated: true);

这篇文章：UISheetPresentationController with a tabBar提出了类似的问题，但没有任何答案。