class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      builder: (context, child) => Scaffold(
        body: GestureDetector(
          onTap: () {
            FocusScopeNode currentFocus = FocusScope.of(context);
            if (!currentFocus.hasPrimaryFocus &&
                currentFocus.focusedChild != null) {
              FocusManager.instance.primaryFocus.unfocus();
            }
          },
          child: child,
        ),
      ),
    );
  }
}