Example of very, very, simple Flutter app to make a point about that

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(context) =>
    MaterialApp(
     home: Scaffold(
        appBar: AppBar(title: Text("Example app")),
        body: Center(
          child: Column(
            children: [
              Text("Hi There!"),
              Image.network(
                'https://imagery.pragprog.com/products/578/czflutr.jpg?1560360708',
                height: 200
              )
            ]
          )
       )
     )
  );
}