Which method is called by default while the application open every time?

i have done the small animation in my first view.I called it in viewDidLoad m开发者_如何学Pythonethod.If i close and open the application,i couldnt see the animation because the view was already loaded in to the memory.So i want the method that will call every time while application starts without run.

Help me

It is not so much clear what you want to achieve, could you post some code? BTW, Have you tried to place it in viewWillAppear: ?