flutter Expanded
expanded는 row, column, flex의 자식으로 있어야 하며 주 축에 따라서 사용가능한 남는 공간을 채운다.
Expanded({Key? key, int flex = 1, required Widget child})
import 'package:flutter/material.dart';
/// Flutter code sample for [Expanded].
void main() => runApp(const ExpandedApp());
class ExpandedApp extends StatelessWidget {
const ExpandedApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: const Text('Expanded Row Sample')),
body: const ExpandedExample(),
),
);
}
}
class ExpandedExample extends StatelessWidget {
const ExpandedExample({super.key});
@override
Widget build(BuildContext context) {
return Center(
child: Row(
children: <Widget>[
Expanded(flex: 2, child: Container(color: Colors.amber, height: 100)),
Container(color: Colors.blue, height: 100, width: 50),
Expanded(child: Container(color: Colors.amber, height: 100)),
],
),
);
}
}
