用 Flutter 开发鸿蒙 PC 应用

git clone https://gitcode.com/openharmony-sig/flutter_flutter
git checkout -b 3.22.0-ohos origin/3.22.0-ohos

jianguo@nutpi flutter % flutter doctor -v
[!] Flutter (Channel [user-branch], 3.22.1-ohos-1.0.0, on macOS 13.4.1 22F82 darwin-arm64, locale zh-Hans-CN)
    ! Flutter version 3.22.1-ohos-1.0.0 on channel [user-branch] at /Users/jianguo/huawei/flutter
      Currently on an unknown channel. Run `flutter channel` to switch to an official channel.
      If that doesn't fix the issue, reinstall Flutter by following instructions at https://flutter.dev/docs/get-started/install.
    ! Upstream repository git@gitcode.com:openharmony-sig/flutter_flutter.git is not the same as FLUTTER_GIT_URL
    • FLUTTER_GIT_URL = https://gitcode.com/openharmony-sig/flutter_flutter.git
    • Framework revision 13a3494e71 (2 minutes ago), 2025-05-15 21:21:44 +0800
    • Engine revision f6344b75dc
    • Dart version 3.4.0
    • DevTools version 2.34.1
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] HarmonyOS toolchain - develop for HarmonyOS devices
    • OpenHarmony Sdk at /Users/jianguo/Library/OpenHarmony/Sdk, available api versions has [15:15, 12:12]
    • Ohpm version 5.0.16
    • Node version v18.20.1
    • Hvigorw binary at /Applications/DevEco-Studio.app/Contents/tools/hvigor/bin/hvigorw

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/jianguo/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • ANDROID_HOME = /Users/jianguo/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 14.3.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14E300c
    ! Flutter recommends a minimum Xcode version of 15.
      Download the latest version or update via the Mac App Store.
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)

[✓] VS Code (version 1.100.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.110.0

⣾

flutter create myflutterapp

jianguo@nutpi  % tree -L 2
.
├── LICENSE
├── README.md
├── analysis_options.yaml
├── android
│   ├── app
│   ├── build.gradle
│   ├── gradle
│   ├── gradle.properties
│   ├── local.properties
│   └── settings.gradle
├── build
│   ├── 1bcac9131f185b5e8bd0f600f6ffecf8.cache.dill.track.dill
│   ├── eaa3fb6bcb4ef7f7f7d2474c436521fe
│   └── ohos
├── ios
│   ├── Flutter
│   ├── Podfile
│   ├── Runner
│   ├── Runner.xcodeproj
│   ├── Runner.xcworkspace
│   └── RunnerTests
├── lib
│   ├── main.dart
│   ├── models
│   ├── pages
│   └── services
├── linux
│   ├── CMakeLists.txt
│   ├── flutter
│   ├── main.cc
│   ├── my_application.cc
│   └── my_application.h
├── macos
│   ├── Flutter
│   ├── Podfile
│   ├── Runner
│   ├── Runner.xcodeproj
│   ├── Runner.xcworkspace
│   └── RunnerTests
├── ohos
│   ├── AppScope
│   ├── build-profile.json5
│   ├── entry
│   ├── har
│   ├── hvigor
│   ├── hvigorfile.ts
│   ├── local.properties
│   ├── oh-package-lock.json5
│   ├── oh-package.json5
│   └── oh_modules
├── pubspec.lock
├── pubspec.yaml
├── test
│   └── widget_test.dart
├── web
│   ├── favicon.png
│   ├── icons
│   ├── index.html
│   └── manifest.json
└── windows
    ├── CMakeLists.txt
    ├── flutter
    └── runner

37 directories, 27 files
jianguo@nutpi  %

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
const MyApp({super.key});

@override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Button Demo'),
        ),
        body: const Center(
          child: MyButton(),
        ),
      ),
    );
  }
}

class MyButton extends StatelessWidget {
const MyButton({super.key});

@override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () {
        print('Button pressed');
        showDialog(
          context: context,
          builder: (context) => AlertDialog(
            title: const Text('Button Pressed'),
            content: const Text('You pressed the button!'),
            actions: [
              TextButton(
                onPressed: () => Navigator.pop(context),
                child: const Text('OK'),
              ),
            ],
          ),
        );
      },
      child: const Text('Press Me'),
    );
  }
}

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
const MyApp({super.key});

@override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('System Ability Demo'),
        ),
        body: const Center(
          child: MySystemAbilityButton(),
        ),
      ),
    );
  }
}

class MySystemAbilityButton extends StatelessWidget {
const MySystemAbilityButton({super.key});

final MethodChannel _channel = const MethodChannel('com.example/system_ability');

@override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () async {
        try {
          final result = await _channel.invokeMethod('invokeSystemAbility');
          print('System ability result: $result');
        } catch (e) {
          print('Error invoking system ability: $e');
        }
      },
      child: const Text('Invoke System Ability'),
    );
  }
}

import 'package:test/test.dart';

void main() {
  test('calculate function returns correct value', () {
    expect(calculate(2, 3), 5);
  });
}

int calculate(int a, int b) {
  return a + b;
}

   "deviceTypes": [
      "2in1"
    ],