What happens when you dismiss a view controller?

2021-04-07 by No Comments

What happens when you dismiss a view controller?

If your view controller dismisses itself, then you’re assuming it is being presented modally. You won’t be able to push that view controller onto a navigation controller. By implementing a protocol, you let the parent view controller decide how it should be presented/pushed and dismissed/popped.

How do you dismiss a modal view controller?

Dismissing Modal Transitions The easiest way to dismiss a modal transition and return to the original view controller is to do it in code. Create a button that will dismiss the view controller and add a button action.

How do I dismiss a view controller in Swift?

You can do this through Storyboard only.

  1. Open Storyboard.
  2. Right click on Cancel button and drag it to previous view controller, where you want to move back to previous controller.
  3. Now release the right click and you can see some actions which performs on cancel button.
  4. Now choose “popover present” option from list.

How do you know if presented view controller is dismissed?

When the presented controller dismisses itself, it will ask the presenter to do it for it. So if you override dismissViewControllerAnimated in your VC1 controller I believe it will get called when you hit cancel on VC2. Detect the dismiss and then call the super classes version which will do the actual dismiss.

How do I pop a specific view controller?

“swift pop to specific view controller” Code Answer

  1. let viewControllers: [UIViewController] = self. navigationController!. viewControllers.
  2. for aViewController in viewControllers {
  3. if aViewController is YourViewController {
  4. self. navigationController!. popToViewController(aViewController, animated: true)

How do I dismiss all modal view controllers in Swift?

Navigate to the view controller that initiates the unwind action.

  1. Control-click the button (or other object) that should initiate the unwind segue. This element should be in the view controller you want to dismiss.
  2. Drag to the Exit object at the top of the view controller scene.

How do you dismiss a view?

The first option is to tell the view to dismiss itself using its presentation mode environment key. Any view can read its presentation mode using @Environment(\. presentationMode) , and calling wrappedValue. dismiss() on that will cause the view to be dismissed.

How do I pop to a specific controller in Swift?

How do I get navigation controller ViewController?

The root view controller is simply the view controller that sits at the bottom of the navigation stack. You can access the navigation controller’s array of view controllers through its viewControllers property. To access the root view controller, we ask for the first item of the array of view controllers.

Which is responsible for dismissing the presented view controller?

The presenting view controller is responsible for dismissing the view controller it presented. If you call this method on the presented view controller itself, UIKit asks the presenting view controller to handle the dismissal. So, in order to intercept such event, you could override that method in the presenting view controller:

How to dismiss a presented view controller from UIKit?

If you are adopting the latter approach (presented view controller dismisses itself), keep in mind that calling dismissViewControllerAnimated:completion: from the presented view controller causes UIKit to in turn call that method on the presenting view controller:

How to override dismissviewcontrolleranimated completion in VC2?

As found from discussion this does not seem to work. Rather than rely on the underlying mechanism, instead of calling dismissViewControllerAnimated:completion on VC2 itself, call dismissViewControllerAnimated:completion on self.presentingViewController in VC2. This will then call your override directly.

How is the modal restricted in React Native?

On iOS, the modal is still restricted by what’s specified in your app’s Info.plist’s UISupportedInterfaceOrientations field. When using presentationStyle of pageSheet or formSheet, this property will be ignored by iOS. The transparent prop determines whether your modal will fill the entire view.