Flutter - System bar colors with SafeArea

Question

I am trying to add SafeArea widget for the flutter app with colorized system bars but somehow they are always turning black.

  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
      SystemUiOverlayStyle.light.copyWith(
        systemNavigationBarIconBrightness: Brightness.dark,
        systemNavigationBarColor: kSurfaceColor,
        statusBarIconBrightness: Brightness.dark,
        statusBarColor: Colors.red, // Note RED here
      ),
    );

    return SafeArea(
      child: Scaffold(
        backgroundColor: kWhiteColor,
        appBar: _buildAppBar(context), // Title and Avatar are built here
        body: _buildBody(), // This function just returns blank Container for now
        floatingActionButton: _buildFAB(context),
        floatingActionButtonLocation: FloatingActionButtonLocation.endFloat,
      ),
    );
  }

This is what I see

If I wrap SafeArea inside a Container with color property set to white, it works but system bar icons also turn white

Answer 1

Building on @david-carrilho's answer, I created this simple widget

import 'package:flutter/material.dart';

class ColoredSafeArea extends StatelessWidget {
  final Widget child;
  final Color color;

  const ColoredSafeArea({Key key, @required this.child, this.color})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
      color: color ?? Theme.of(context).colorScheme.primaryVariant,
      child: SafeArea(
        child: child,
      ),
    );
  }
}

Then wherever I would use a SafeArea, I use my little wrapper widget ColoredSafeArea.

class MyExampleView extends StatelessWidget {
  const MyExampleView({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return ColoredSafeArea(
      child: Center(
        child: Text('Nice color bar'),
      ),
    );
  }
}

The reason why this works is because it creates a container behind your content with the specified color, then SafeArea simply adds the necessary padding based on the device.