What is onGenerateRoute in Flutter?

onGenerateRoute property Null safety The route generator callback used when the app is navigated to a named route . If this returns null when building the routes to handle the specified initialRoute, then all the routes are discarded and Navigator. defaultRouteName is used instead ( / ). See initialRoute.

Replace the current route of the navigator that most tightly encloses the given context by pushing the given route and then disposing the previous route once the new route has finished animating in .

PageRoute<T> class Null safety. A modal route that replaces the entire screen .

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.

In Flutter, a route is just a widget.