Flutter - Cupertino Icons

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

import 'package:cupertino_icons/cupertino_icons.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(
        // 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 Colors.green 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.
        primarySwatch: Colors.green,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

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

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("CuperTino Icons"),
      ),
      body: SingleChildScrollView(
        child: Column(
          // crossAxisAlignment: CrossAxisAlignment.center,
          // mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Center(
              child: Icon(
                CupertinoIcons.add,
                color: Colors.red,
                size: 100,
              ),
            ),
            SizedBox(
              height: 50,
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Icon(
                  CupertinoIcons.airplane,
                  color: Colors.yellow,
                  size: 100,
                ),
                Icon(
                  CupertinoIcons.antenna_radiowaves_left_right,
                  color: Colors.cyanAccent,
                  size: 100,
                ),
              ],
            ),
            SizedBox(
              height: 50,
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Icon(
                  CupertinoIcons.ant,
                  color: Colors.green,
                  size: 100,
                ),
                Icon(
                  CupertinoIcons.xmark_square,
                  color: Colors.brown,
                  size: 100,
                ),
              ],
            ),
            SizedBox(
              height: 100,
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Icon(
                  CupertinoIcons.gobackward,
                  color: Colors.green,
                  size: 200,
                ),
                Icon(
                  CupertinoIcons.goforward,
                  color: Colors.green,
                  size: 200,
                )
              ],
            ),
          ],
        ),
      ),
    );
  }
}