Row
為 Layout Widget,可將內層 Widget 水平排列
。
Version
Flutter 3.24
Flutter
1
2
3
水平排列,且水平垂直置中
Home
home.dart
import 'package:flutter/material.dart';
class Home extends StatelessWidget {
const Home({super.key});
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
color: Colors.amber,
child: const Text('1', style: TextStyle(fontSize: 30))),
Container(
color: Colors.red,
child: const Text('2', style: TextStyle(fontSize: 30))),
Container(
color: Colors.green,
child: const Text('3', style: TextStyle(fontSize: 30))),
])));
}
}
- 定義
Home
page
Line 6
build(BuildContext context) {
return Scaffold(
body: Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
color: Colors.amber,
child: const Text('1', style: TextStyle(fontSize: 30))),
Container(
color: Colors.red,
child: const Text('2', style: TextStyle(fontSize: 30))),
Container(
color: Colors.green,
child: const Text('3', style: TextStyle(fontSize: 30))),
])));
}
Widget
Row
:將內層 widget 水平排列children
:設定內層多個 widget,為 ArraymainAxisAlignment
:設定主軸 alignmentcrossAxisAlignment
:設定垂直軸 aligment
Conclusion
Row
可簡單將內層 widget 水平排列,且不受長寬限制