viewDidAppear issues in iOS 13

Question

I just started coding with iOS 13 and am having issues with view controller functions. Previous to iOS 13 I had a view controller presented using this function

func presentDetail(_ viewControllerToPresent: UIViewController){

        let transition = CATransition()
        transition.duration = 0.22
        transition.type = kCATransitionPush
        transition.subtype = kCATransitionFromRight
        self.view.window?.layer.add(transition, forKey: kCATransition)

        present(viewControllerToPresent, animated: false, completion: nil)

    }

And when dismissed, viewDidAppear in the root view controller would trigger. Now in iOS 13 it seems like the VC is built on top of the root VC, and when dismissed it does NOT trigger viewDidAppear in the root VC. Is there a different function I have to use or do I have to completely change my approach? root VC viewDidAppear currently triggers when viewDidLoad and when user switches to it from tab bar, any advice would be great, thank you!

TNguyen TNguyen · Accepted Answer · 2019-10-11T23:39:26

The default presentation style, which is the card style, will not trigger viewDidAppear when you dismiss the view controller.

You'll most likely have to switch to a different modalPresentationStyle that will trigger it. One of the presentation style's that does trigger it for example is .fullScreen

So for example, for viewControllerToPresent you'd want to set it's presentation style to

viewControllerToPresent.modalPresentationStyle = .fullScreen

before you present it

viewDidAppear issues in iOS 13

1 Answers