如何删除后台的第一个ViewController？

Question

I have two view controllers, first view controller and the second view controller, when the user segue from the first view controller to the second view controller, the first view controller still visible and sits behind the second view controller. The user can swipe the first view controller and see the entire first view controller and then they got stuck there. I noticed that this only happens after the launch of iOS 13.

performSegue(withIdentifier: "showSecond", sender: self)

Answer 1

Follow these two steps:

1. Click on the segue you created on the Storyboard
2. Go to Attributes Inspector
3. Set the Presentation to "Full Screen"

Answer 2

@Maysam is 100% right! But you can also do it programmatically through this:

  // Go to next View Controller
@IBAction func nextTextVC(_ sender: UIButton) {

    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let nextInfo = storyboard.instantiateViewController(identifier: "socialOptionsIntroViewController")
    self.navigationController?.pushViewController(nextInfo, animated: true)
        }

Answer 3

There is a more detail thread could answer this question.

The follow solution from Pratik Sodha

let controller = UIViewController()
let navigationController = UINavigationController(rootViewController: controller)
navigationController.modalPresentationStyle = .overCurrentContext
self.navigationController?.present(navigationController, animated: true, completion: nil)