Flutter Layout行/列

看看IntrinsicHeight; 包裹根行应该提供您想要的效果：

import 'package:flutter/material.dart';void main() => runApp(MyApp());class MyApp extends StatelessWidget {  @override  Widget build(BuildContext context) {    return MaterialApp(      title: 'Flutter Demo',      theme: ThemeData(        primarySwatch: Colors.blue,      ),      home: Scaffold(        appBar: AppBar(title: Text('Rows & Columns')),        body: RowsAndColumns(),      ),    );  }}class RowsAndColumns extends StatelessWidget {  @override  Widget build(BuildContext context) {    return Padding(      padding: const EdgeInsets.only(top: 100.0),      child: IntrinsicHeight(        child: Row(crossAxisAlignment: CrossAxisAlignment.stretch, children: [          Expanded( child: Column(children: [   Container(height: 120.0, color: Colors.yellow),   Container(height: 100.0, color: Colors.cyan), ]),          ),          Expanded(child: Container(color: Colors.amber)),        ]),      ),    );  }}

调整列中容器的高度会导致右侧的容器调整大小以匹配：

https://gist.github.com/mjohnsullivan/c5b661d7b3b4ca00599e8ef87ff6ac61