Explore a live coding demonstration from Ubuntu Summit 2022 that guides you through building applications for the Ubuntu desktop using Flutter. Learn how to create cross-platform apps for Desktop, Mobile, and Web as Brett Morgan showcases the process of developing a Flutter app for Ubuntu. Discover key concepts such as data structures, initialization methods, centering techniques, drawing walls, fixing mazes, implementing binary trees, color changes, title bar modifications, and converting to stateful apps. Dive into advanced topics like color change animations, stateful objects, and dynamic theme selection. Gain insights into practical aspects such as executable size, production builds, and Linux theming. Perfect for developers looking to expand their skills in cross-platform app development with a focus on Ubuntu.