First demo at Fluttercon EU 2025

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(const MaterialApp(home: SimpleDemo()));
}

class SimpleDemo extends StatefulWidget {
  const SimpleDemo({super.key});

  @override
  State<SimpleDemo> createState() => _SimpleDemoState();
}

class _SimpleDemoState extends State<SimpleDemo> {
  bool _horizontal = true;

  @override
  Widget build(BuildContext context) {
    final children =
        [
              'https://pbs.twimg.com/profile_images/1618172499052593152/kBjTtVob_400x400.jpg',
              'https://docs.flutter.dev/assets/images/flutter-logo-sharing.png',
              'https://storage.googleapis.com/cms-storage-bucket/shadow-dash.d406c736e7c4c57f5f61.png',
              'https://avatars.githubusercontent.com/u/1609975?s=280&v=4',
            ]
            .map(
              (url) => Image.network(
                url,
                width: 60,
                height: 60,
                fit: BoxFit.cover,
              ),
            )
            .toList();
    return GestureDetector(
      onTap: () {
        setState(() => _horizontal = !_horizontal);
      },
      child: Scaffold(
        body: Center(
          child: _horizontal
              ? Row(
                  spacing: 16,
                  mainAxisSize: MainAxisSize.min,
                  children: children,
                )
              : Column(
                  spacing: 16,
                  mainAxisSize: MainAxisSize.min,
                  children: children,
                ),
        ),
      ),
    );
  }
}