main31.dart

//what are expanded widgets in flutter
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.yellow),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          backgroundColor: Theme.of(context).colorScheme.inversePrimary,
          title: Text(widget.title),
        ),
        body:
        Row(
          children: [
            Expanded(
              flex: 1,
              child: Container(
                width: 50,
                height: 100,
                color: Colors.blue,
              ),
            ),
            Expanded(
              flex: 2,
              child: Container(
                width: 50,
                height: 100,
                color: Colors.orange,
              ),
            ),
            Expanded(
              flex: 3,
              child: Container(
                width: 50,
                height: 100,
                color: Colors.grey,
              ),
            ),
            Expanded(
              flex: 4,
              child: Container(
                width: 50,
                height: 100,
                color: Colors.green,
              ),
            ),
          ],
        )
    );
  }
}