如果从过流上下文视图控制器呈现错误呈现视图控制器

Question

So I'm having an issue with 3 view controllers I have. I have View Controller A which presents a View Controller B with a presentation style of currentContext . This View Controller B presents a View Controller C with the default presentation style. Something like this: presents over current context presents regularly VC A -------------------------------> VC B --------------------> VC C

The problem is, when I want to dismiss the View Controller C, the presentingViewController property points to VC A instead of VC B, and also, the viewWillAppear of VC B is not called, while the viewWillAppear in VC A is.

I cannot use the completion block of dismiss(animated flag: Bool, completion: (() -> Void)? = nil) because VC B doesn't have control over the dismissal of VC C. It is a flow that can be started from several points in the app, so the management of the navigation of this flow is done in a separate class.

What is happening here? I really need the viewWillAppear of VC B to be called.

Answer 1

@Kinopio - I guess the problem you are facing is because you are dismissing the controller from VC A, so here self point to current class. You need to pass the message to VC B and that dismiss from there.

Like

//code in VC A
func dismissViewControllerNoC(){
 viewControllerNoB.dismiss()
}

//code in VC B
func dismiss(){
dismiss(animated flag: Bool, 
  completion: (() -> Void)? = nil)
}