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

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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: ?