onUnknownRoute property

RouteFactory onUnknownRoute

Called when onGenerateRoute fails to generate a route, except for the initialRoute.

This callback is typically used for error handling. For example, this callback might always generate a "not found" page that describes the route that wasn't found.

The default implementation pushes a route that displays an ugly error message.

The Navigator is only built if routes are provided (either via home, routes, onGenerateRoute, or onUnknownRoute); if they are not, builder must not be null.


final RouteFactory onUnknownRoute