Running method everytime I push the ViewController

What init metod is called everytime a viewcontroller is pushed to window?

-viewDidLoad and -initWithNibName work only开发者_开发知识库 1st time the view is started. But I want to do some startup checking in my vc everytime I start it.

Does such method exist? or do I have to declare it somehow manually?

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Try view controller's viewWillAppear: method (if you want to setup one specific controller).