registerPageObserver method

  1. @protected
VoidCallback registerPageObserver(
  1. NavigatorPageObserver pageObserver
)

Register observers for the life cycle of all pages under the current module and submodules.

Unregistry by calling the return value VoidCallback.

Do not override this method.

Implementation

@protected
VoidCallback registerPageObserver(NavigatorPageObserver pageObserver) => pageObservers.registry(pageObserver);