The MaterialApp. router() is another convenience. “Creates a [MaterialApp] that uses the [Router] instead of a [Navigator] .” The router constructor provides you a way to create a MaterialApp and configure and return a custom Navigator.
Read moreWhat is a Navigator in Flutter?
In Flutter these elements are called routes and they’re managed by a Navigator widget. The navigator manages a stack of Route objects and provides two ways for managing the stack, the declarative API Navigator. pages or imperative API Navigator. push and Navigator .
Read more