Question

Where should I place my code that creates a UIBarButtonItem and assigns it to self.navigationItem.rightBarButtonItem? In initWithNibName or viewDidLoad?

EDIT: I should clarify that I’m loading a NIB from Interface Builder.

Answer 1

viewDidLoad is the correct place to create the button programatically whether you are loading a NIB from Interface Builder or not.

From the UIViewController class, viewDidLoad method documentation

This method is called after the view controller has loaded its
associated views into memory. This method is called regardless of
whether the views were stored in a nib file or created
programmatically in the loadView method. This method is most commonly
used to perform additional initialization steps on views that are
loaded from nib files.