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I am new to iOS development and am trying to make a custom toast by using UIViewController of smaller size and presenting it modally. I want that when the view controller is presented, the background screen remains responsive (clickable/scrollable) but at the moment, the background screen becomes unresponsive until the presented view controller is dismissed. Any help in the right direction would be appreciated.
Thanks!

Edit 1:
This is the function inside NotificationToastViewController which is called to show the toast.

class func popup(with presentable: NotificationToastPresentable, onViewDidAppear: (() -> ())? = nil, onDismiss: ((CloseStatus) -> ())? = nil, bool1: Bool = false, bool2: Bool = false) 
 let popupViewController = NotificationToastViewController()
 popupViewController.modalTransitionStyle = .crossDissolve
 popupViewController.modalPresentationStyle = .overCurrentContext
 let _ = popupViewController.view
 popupViewController.configureWith(presentable)
 popupViewController.onViewDidAppear = onViewDidAppear
 popupViewController.onDismiss = onDismiss

 if bool1 
 popupViewController.statusLabelConstraintToBottom?.constant = 12.0
 popupViewController.statusLabelLeadingConstraint?.constant = 10.0
 popupViewController.statusLabelConstraintWithIcon?.isActive = false
 else 
 popupViewController.statusLabelConstraintToBottom?.isActive = false
 popupViewController.statusLabelLeadingConstraint?.isActive = false
 

 if bool2 
 popupViewController.heightConstrainOfCtaButton?.isActive = false
 
 UIApplication.shared.topMostViewController()?.present(popupViewController, animated: true)

This is the view hierarchy in the xib:

You can do something of this sort:

var vc = SecondController()
 self.addChild(vc)
 self.view.addSubview(vc.view!)
 vc.view.translatesAutoresizingMaskIntoConstraints = false
 vc.view.leftAnchor.constraint(equalTo: self.view.leftAnchor, constant: 200).isActive = true
 vc.view.topAnchor.constraint(equalTo: self.view.topAnchor, constant: 300).isActive = true
 vc.view.bottomAnchor.constraint(equalTo: self.view.bottomAnchor, constant: 0).isActive = true
 vc.view.rightAnchor.constraint(equalTo: self.view.rightAnchor, constant: 0).isActive = true

Where SecondViewController is another ViewController class, which you have to add as a child Controller to your home controller and then set the constraints of the second controller's view. I believe the result of such an implementation is what you are trying to achieve.