What is a UINavigationController?

A UINavigationController is a view controller subclass that makes navigation between multiple view controllers easier. The navigation bar has a type of UINavigationBar and is automatically configured and setup when we use a navigation controller.

How many Uiviewcontrollers can a single UINavigationController hold?

The navigation stack isn’t limited any more to 4 view controllers.

How do I present UIViewController?

To present ViewController which works with XIB file you can use the following example:

// Register Nib.
let newViewController = NewViewController(nibName: “NewViewController”, bundle: nil)
// Present View “Modally”
self. present(newViewController, animated: true, completion: nil)

What is the name of the view of the navigation controller?

Navigation Controller Views You access a navigation controller’s view from its view property. This view incorporates the navigation bar, an optional toolbar, and the content view corresponding to the topmost view controller. Figure 3 shows how these views are assembled to present the overall navigation interface.

How do I get previous Viewcontroller in Swift?

Accessing the Root View Controller 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.

How do I pop a ViewController in Swift?

You can do it by selecting the View Controller in Storyboard editor and clicking Editor -> Embed In -> Navigation Controller. Also make sure that you have your Storyboard Entry Point (the arrow that indicates which view controller is presented first) either pointing to Navigation Controller or before it.

How can you reload a ViewController after dismissing a modally presented view controller in Swift?

3 Answers. Swift 5: You can access the presenting ViewController (presentingViewController) property and use it to reload the table view when the view will disappear. When you dismiss the SecondViewController, the tableview of the FirstViewController will reload.

How do I open the Appdelegate view controller?

The steps are as follows:

Create an instance of UIStoryboard, let mainStoryboard:UIStoryboard = UIStoryboard(name: “Main”, bundle: nil)
Instantiate View Controller with Identifier, HomeViewController.
Set the Root View Controller of your app’s window to a different one. rootViewController = homePage.

How do I push a view controller?

Starts here3:23pushViewController (Swift 4 – 2018) – YouTubeYouTube

Is pushing the same view controller instance more than once which is not supported?

If you are, there is no need to push a VC onto your Navigation Controller because the segue will do it already. That is why your error is occurring – you are pushing a VC that is already on the stack of the NavController. It means you are pushing the same viewcontroller object to stack again when it’s already in there.

How do I get Rootviewcontroller of Uinavigationcontroller?

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.