e2etests/web/regular_integration_tests/lib/target_platform_main.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      key: const Key('mainapp'),
      title: 'Platform Test',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            if (defaultTargetPlatform == TargetPlatform.macOS)
              const Text(
                'I am running on MacOS',
                key: Key('macOSKey'),
              ),
            if (defaultTargetPlatform == TargetPlatform.iOS)
              const Text(
                'I am running on MacOS',
                key: Key('iOSKey'),
              ),
            if (defaultTargetPlatform == TargetPlatform.android)
              const Text(
                'I am running on Android',
                key: Key('androidKey'),
              ),
          ],
        ),
      ),
    );
  }
}