Flutter

Mobile apps from a single codebase

Flutter builds iOS and Android apps (and more) from a single Dart codebase. Widgets, layout, navigation, state, APIs and persistence, all the way to animations and testing: build real mobile apps.

Foundations

Beginner - the basics, step by step

• Flutter and Dart: installation and first projectDiscover what Flutter and Dart are, install the tools, create your first project, and experience the magic of hot reload.
• Dart basics: variables, functions, and null safetyLearn to store values in typed variables, write functions, and understand the protection against null.
• Everything is a widget: Text, Container, and IconUnderstand Flutter's big idea, the widget tree, through three basic building blocks: Text, Container, and Icon.
• Layout: Row, Column, Padding, Expanded, SizedBoxOrganize multiple widgets on screen using columns, rows, spacing, and space distribution.
• Interactivity: buttons, StatefulWidget, and setStateBring your screens to life by responding to button taps and updating the display with setState.

Progression

Intermediate - build real things

• High-performance lists with ListView.builderDisplay lists of thousands of items without slowdowns thanks to ListView.builder, ListTile and items extracted into their own widgets.
• Navigating between screens with NavigatorPush and pop screens with Navigator.push and pop, pass data through constructors, and retrieve a result when the screen closes.
• Forms: TextField, controllers and validationDrive your input fields with TextEditingController and validate every entry at once thanks to Form and TextFormField.
• Sharing state: lifting state up and callbacksKeep state in the common ancestor and turn your child widgets into controlled widgets that report changes back through callbacks.
• Themes: ThemeData, Material 3 and dark modeCentralize colors and typography in ThemeData, generate a Material 3 palette with ColorScheme.fromSeed, and offer a dark mode effortlessly.

Advanced

Proficient - advanced patterns and performance

• Modeling your data: classes, JSON, and immutabilityTurn JSON into immutable Dart classes with fromJson, toJson, copyWith, and reliable value equality.
• Async in Dart: Future, async/await, FutureBuilderMaster Future, async/await, and FutureBuilder without blocking the UI or accidentally re-firing your requests.
• Calling an HTTP API: decoding and screen statesStructure a professional network call with the http package: timeout, status codes, typed decoding, and exhaustive states.
• Structured state management: ChangeNotifier and ProviderShare application state with ChangeNotifier and Provider while mastering watch, read, and select for targeted rebuilds.
• Local persistence with shared_preferencesPersist preferences and lightweight data with shared_preferences while knowing its security and volume limits.

Mastery

Expert - architecture, internals and edge cases

• Architecting an app: UI, logic, dataStructure a Flutter app in watertight layers with the repository pattern and typed sealed results.
• Animations: implicit and explicit under the hoodUnderstand the internal mechanics of implicit animations and finely drive your own AnimationController.
• Performance: const, rebuilds, keys and DevToolsEliminate useless rebuilds thanks to const, keys and reconciliation, then measure with DevTools.
• Adaptive: LayoutBuilder, MediaQuery and platformsBuild interfaces that adapt to the parent's constraints, to the window and to each OS's conventions.
• Tests: Dart unit tests and widget testsTest logic and widgets with hand-written fakes, a simulated clock and the right pump reflexes.