import 'package:flutter/material.dart'; import 'package:flutter/widgets.dart'; class ThemeSwitchWidget extends StatelessWidget { const ThemeSwitchWidget({Key key}) : super(key: key); @override Widget build(BuildContext context) { return Switch( value: true, activeColor: Colors.black, onChanged: (bool value) { print(value); }, activeThumbImage: new NetworkImage( 'https://cdn0.iconfinder.com/data/icons/multimedia-solid-30px/30/moon_dark_mode_night-512.png'), inactiveThumbImage: new NetworkImage( 'https://cdn0.iconfinder.com/data/icons/multimedia-solid-30px/30/moon_dark_mode_night-512.png'), ); } }