How to use IntrinsicHeight widget in Flutter

In this Google flutter code example we are going to learn how to use IntrinsicHeight widget in Flutter.

You can copy and adopt this source code example to your android project without reinventing the wheel.

The comments on the code provide more detailed explanation

The code is based on flutter version 1 and 2.

main.dart (App entry point)

import 'package:flutter/material.dart';
import 'intrinsicheight.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Baseline Widget',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
      home: BasicIntrinsicHeight(),


import 'package:flutter/material.dart';

class BasicIntrinsicHeight extends StatelessWidget {
  //A widget that sizes its child to the child's intrinsic height.

  //This class is useful, for example, when unlimited height is available and you would like a child that would
  //otherwise attempt to expand infinitely to instead size itself to a more reasonable height
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("IntrinsicHeight Widget")),
      body: Center(
        child: IntrinsicHeight(
          child: Container(
            height: 100.0,
            width: 40.0,
            child: Container(color:, height: 50.0),

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