What is the program flow in case navigation based application developed for iphone in objective C?

Question

I want to know the sequence in which default or predefined methods ( such as viewDidLoad applicationDidFinishLaunching etc) are called in program execution in a navigation based application.

Answer 1

See a life cycle for a view controller

1. init
2. loadView (if view wasn't specified with initWithNibName)
3. viewDidLoad
4. viewWillAppear
5. viewDidAppear
6. //here come some actions
7. viewWillDisappear
8. viewDidDisappear
9. viewDidUnload

Everything else depends on the sequence and methods (IB or through code) of instantiating of root view controllers.