Flutter Tutorial
Flutter is Google's open-source UI toolkit for building natively compiled apps
for mobile, web, and desktop from a single codebase, written in the
Dart programming language. Unlike Cordova's WebView approach, Flutter apps don't
render HTML at all — every pixel is drawn by Flutter's own high-performance rendering engine,
which is why Flutter apps look and feel genuinely native. This is the most complete track on this
site for mobile development: 29 lessons covering Dart itself, the widget system, state management
(from simple to production-grade), navigation, real APIs, animations, and even hands-on UI designs
you can study pixel by pixel — so landing on this page gives you a real, working picture of Flutter.
Where this fits: Flutter is a genuinely different approach from Cordova (HTML/CSS/JS in a WebView) — you'll be learning Dart, a new language, and building UI entirely in code rather than markup. No prior mobile development experience is assumed, but general OOP concepts (classes, inheritance) will help.
How Flutter Actually Works
| Piece | What it does |
|---|
| Dart | The programming language Flutter apps are written in — compiled ahead-of-time to native machine code for release builds |
| Widgets | Everything visible (and a lot that isn't) is a widget — text, buttons, padding, layout, even the app itself. Widgets compose into a tree. |
| Rendering engine | Flutter draws every pixel itself via Skia/Impeller, rather than using each platform's native UI components — this is WHY the same code looks identical on Android and iOS |
| Hot reload | Code changes appear in your running app in under a second, without losing app state — one of Flutter's most loved developer-experience features |
A Quick Look Ahead
Example: A Minimal Stateless Widget
class WelcomeCard extends StatelessWidget {
final String name;
const WelcomeCard({super.key, required this.name});
@override
Widget build(BuildContext context) {
return Text('Welcome, $name!');
}
}
Note: This is correct, real Flutter/Dart code — but this website's own project doesn't run a Flutter build, so you won't see it actually execute on this page. Follow along by creating your own project after the next page's installation steps.
What You'll Learn In This Track
| Area | Covered in |
|---|
| Foundations | Dart language basics, functions & classes, your first app, packages |
| The widget system | Stateless vs Stateful widgets, the widget tree, layout, common widgets |
| Interactivity | setState, navigation, forms, lists, images, HTTP & JSON |
| Scaling up | Provider, Riverpod & Bloc, local storage, theming |
| Real UI design | A hands-on Login Screen design you can study line by line |
| Shipping it | Animations, debugging, testing, building & releasing, performance |