Change Background Color of modal view

Question

I would like to resent an viewcontroller as modal view in size .formSheet. The background color should not be grey transparent, it should be an blur effect.

How I cloud change the background color of view behind modal.

let storyboard = UIStoryboard(name: "DetailViewController", bundle: nil)
if let modalViewController = storyboard.instantiateInitialViewController() as? DetailViewController {
    self.definesPresentationContext = true
    self.providesPresentationContextTransitionStyle = true
    modalViewController.item = item
    modalViewController.modalPresentationStyle = .formSheet
    modalViewController.modalPresentationCapturesStatusBarAppearance = true

    self.present(modalViewController, animated: true, completion: nil)
}

Answer 1

From the viewWillAppear(:) method of your modalViewController , you can access the self.presentationController?.containerView property. You can either change the background color or even add a blur effect view if you want.