How to check if dark mode is enabled on iOS/Android using Flutter?

Issue

How can I check if dark mode is enabled in Android Q with Flutter?
I know how to set the dark mode, but I didn't find a way to check the background theme.
Here is the code to set the dark theme.

darkTheme: ThemeData.dark(),

Solution

There are two ways:

1. NO context required. Can be used in initState for example:

    var brightness = SchedulerBinding.instance!.window.platformBrightness;
    bool isDarkMode = brightness == Brightness.dark;
   

2. context is required:

    var brightness = MediaQuery.of(context).platformBrightness;
    bool isDarkMode = brightness == Brightness.dark;
   

Answered By - CopsOnRoad