[Flutter] What is the new method for the deprecated backgroundColor

I was following an old flutter tutorial in which backgroundColor was used. Here is what I wrote following the tutorial:

Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'My app',
theme: ThemeData.dark().copyWith(
backgroundColor: backgroundColor,
),
home: const Text("My UI page"),
);
}
}


The myBackgroundColor is a const in another file consiting all the colors for the app. What should I write in theme to apply myBackgroundColor?

The flutter docs say backgroundColor is deprecated and use colorScheme.background instead. But when using colorScheme.background I get an error sayind undefined name 'colorScheme'.

Continue reading...