Show InfoBar without BuildContext

[Nilsuuus]

Is there a way to show an InfoBar without having the BuildContext?
MaterialApp has a parameter called scaffoldMessengerKey which allows you to show a Snackbar without having direct access to a BuildContext. So if you have any operation which is far away from the widget tree and the result needs to be delivered to the user, this is very usefull.

Is there a way to get it done if you use FluentApp instead of MaterialApp?

[bdlukaa]

¹ You not having access to a build context is probably a design fault in your app.
² Yes, it is totally possible! You can use a navigatorKey to access the navigator context:

final navigatorKey = GlobalKey<NavigatorState>();

FluentApp(
  navigatorKey: navigatorKey,
),

final context = navigatorKey.currentContext;
if (context != null) {
  ...
}