I want touch the UIBarButtonItem in the top right, and push a new viewController. So, the code is:
UIBarButtonItem
UIBarButtonItem *addButton = [[UIBarButtonItem a
Since you have added your vc in storyboard, hence initWithNibName will not work.
initWithNibName
Either use segue or use storyboard's method instantiateViewControllerWithIdentifier to instantiate the view controller
segue