ViewdidLoad called every time

1
votes

Why every time I change UIViewController embed in UINavigationController using show push in storyboard ViewDidLoad is called?

It hasn't to be called only once or I have to check programmatically if it is already loaded?

Another relative question:

In the following best practices found here in StackOverflow that user are talking about init method, but if my ViewController are loaded by storyboard where I have to initialise my properties?

Best practices

Remember not to do view controller initialisation in viewDidLoad. This is a common mistake. For stuff that should only happen once when the view controller is loaded, do it in one of the controller's init methods.

1
iosswiftuiviewcontrollerstoryboard
ViewDidLoad is calling when you push using segue because when ever segue execute it creates new object of the destination viewController and push it to navigation stack that's why viewDidLoad is beign called every time - Adnan Aftab
@C_X And why even init method are called every time? - user5524779
Because every time its creating new instance, - Adnan Aftab

1 Answers

0
votes

viewDidLoad is called first time when the viewController's view is loaded, (either by accessing the view controller's view or by presenting a view controller via modal presentation or via a push presentation). Once the view controller is loaded, viewDidLoad will not get called again. If you want to use init method, you need to use initWithCoder for the things that are from storyboard.