1. Terminology

Terms you should know to use the library effectively

• Key: immutable value object (so it implements hashCode/equals/toString properly) that represents where you are in the application. Originally it would have been called State, but it's used as the key in a map that identifies the SavedState.

• Backstack: the object that contains the current state, and exposes methods to manipulate it. Think of it as a Router.

• StateChange: an object that represents a change in state, providing the previous and the new keys.

• StateChanger: the class that handles when the state changes, and calls the callback when the state change is complete.