Is it possible to determine if view is dissapearing without additional BOOL field and setting it's value to YES/NO in -viewWillDissapear -viewDidDissapear?
I am trying to determine if view is not dissapearing casued by "back" button (pop to previous controller). Right now I have isNavigationInProgress property that do this for me.
Not sure I understand your question correctly.
However it looks like you are talking about isMovingFromParentViewController, isMovingToParentViewController, isBeingPresented, isBeingPresented and isBeingDismissed properties
These properties allows you to get the cause of -viewWillDissapear and -viewDidDissapear calls.
See more info on Apple site, UIViewController reference