import 'package:flutter/material.dart'; {{#withPlatformChannelPluginHook}} import 'dart:async'; import 'package:flutter/services.dart'; import 'package:{{pluginProjectName}}/{{pluginProjectName}}.dart'; {{/withPlatformChannelPluginHook}} {{#withFfiPluginHook}} import 'dart:async'; import 'package:{{pluginProjectName}}/{{pluginProjectName}}.dart' as {{pluginProjectName}}; {{/withFfiPluginHook}} void main() { runApp(const MyApp()); } {{^withPluginHook}} 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.blue, ), 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; @override 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. _counter++; }); } @override 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( // Here we take the value from the MyHomePage object that was created by // the App.build 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. // // Invoke "debug painting" (press "p" in the console, choose the // "Toggle Debug Paint" action from the Flutter Inspector in Android // Studio, or the "Toggle Debug Paint" command in Visual Studio Code) // to see the wireframe for each widget. // // 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). mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ const Text( 'You have pushed the button this many times:', ), Text( '$_counter', 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. ); } } {{/withPluginHook}} {{#withPlatformChannelPluginHook}} class MyApp extends StatefulWidget { const MyApp({super.key}); @override State<MyApp> createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { String _platformVersion = 'Unknown'; final _{{pluginClassLowerCamelCase}} = {{pluginDartClass}}(); @override void initState() { super.initState(); initPlatformState(); } // Platform messages are asynchronous, so we initialize in an async method. Future<void> initPlatformState() async { String platformVersion; // Platform messages may fail, so we use a try/catch PlatformException. // We also handle the message potentially returning null. try { platformVersion = await _{{pluginClassLowerCamelCase}}.getPlatformVersion() ?? 'Unknown platform version'; } on PlatformException { platformVersion = 'Failed to get platform version.'; } // If the widget was removed from the tree while the asynchronous platform // message was in flight, we want to discard the reply rather than calling // setState to update our non-existent appearance. if (!mounted) return; setState(() { _platformVersion = platformVersion; }); } @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('Plugin example app'), ), body: Center( child: Text('Running on: $_platformVersion\n'), ), ), ); } } {{/withPlatformChannelPluginHook}} {{#withFfiPluginHook}} class MyApp extends StatefulWidget { const MyApp({super.key}); @override _MyAppState createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { late int sumResult; late Future<int> sumAsyncResult; @override void initState() { super.initState(); sumResult = {{pluginProjectName}}.sum(1, 2); sumAsyncResult = {{pluginProjectName}}.sumAsync(3, 4); } @override Widget build(BuildContext context) { const textStyle = TextStyle(fontSize: 25); const spacerSmall = SizedBox(height: 10); return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('Native Packages'), ), body: SingleChildScrollView( child: Container( padding: const EdgeInsets.all(10), child: Column( children: [ const Text( 'This calls a native function through FFI that is shipped as source in the package. ' 'The native code is built as part of the Flutter Runner build.', style: textStyle, textAlign: TextAlign.center, ), spacerSmall, Text( 'sum(1, 2) = $sumResult', style: textStyle, textAlign: TextAlign.center, ), spacerSmall, FutureBuilder<int>( future: sumAsyncResult, builder: (BuildContext context, AsyncSnapshot<int> value) { final displayValue = (value.hasData) ? value.data : 'loading'; return Text( 'await sumAsync(3, 4) = $displayValue', style: textStyle, textAlign: TextAlign.center, ); }, ), ], ), ), ), ), ); } } {{/withFfiPluginHook}}