Progression

Flutter · 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.