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import 'package:cronet_http/cronet_http.dart';
import 'package:cupertino_http/cupertino_http.dart';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:fetch_client/fetch_client.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:platform_info/platform_info.dart';
import 'package:flutter/foundation.dart';
void main() async {
runWithClient(() => runApp(const MyApp()), await createClientFactory());
Future<Client Function()> createClientFactory() async {
var clientFactory =;
final device = DeviceInfoPlugin();
if (kIsWeb) {
clientFactory = () => FetchClient(mode: RequestMode.cors);
} else if (platform.isAndroid) {
final engine =
cacheMode: CacheMode.memory,
userAgent: (await device.androidInfo).model,
clientFactory = () => CronetClient.fromCronetEngine(engine);
} else if (platform.isCupertino) {
clientFactory =;
return clientFactory;
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
// TRY THIS: Try running your application with "flutter run". You'll see
// the application has a blue toolbar. Then, without quitting the app,
// try changing the seedColor in the colorScheme below to
// and then invoke "hot reload" (save your changes or press the "hot
// reload" button in a Flutter-supported IDE, or press "r" if you used
// the command line to start the app).
// Notice that the counter didn't reset back to zero; the application
// state is not lost during the reload. To reset the state, use hot
// restart instead.
// This works for code too, not just values: Most code changes can be
// tested with just a hot reload.
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
home: const MyHomePage(title: 'Flutter Demo Home Page'),
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
State<MyHomePage> createState() => _MyHomePageState();
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// TRY THIS: Try changing the color here to a specific color (to
// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
// change color while the other colors stay the same.
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
// Here we take the value from the MyHomePage object that was created by
// the method, and use it to set our appbar title.
title: Text(widget.title),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also a layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
// action in the IDE, or press "p" in the console), to see the
// wireframe for each widget.
children: <Widget>[
const Text(
'You have pushed the button this many times:',
style: Theme.of(context).textTheme.headlineMedium,
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
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