在 Flutter 配置 Github Action，打开项目的根目录中设置一个新的目录和文件 .github/workflows/deploy.yml

这是此次要实现的GitHub Actions的大致工作流程:

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+----------------+         +------------------+         +-----------------+
|                |         |                  |         |                 |
|  触发事件       +-------->+  准备环境         +-------->+  构建与测试      |
| (push 或 PR)   |         | (确定 Flutter    |         | (构建 APK 和     |
|                |         |  版本)           |         |  iOS 应用，运行  |
+----------------+         +------------------+        |  测试)           |
                                                       +--------+--------+
                                                                |
                                                                |
                                                                v
                                                       +--------+--------+
                                                       |                 |
                                                       |   部署           |
                                                       | (上传构建产物到   |
                                                       |  生产环境)       |
                                                       |                 |
                                                       +-----------------+
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name: Flutter CI/CD Pipeline

on:
  push:
    branches: [ main ]
    tags:
      - 'v*'  # 只有带有特定版本格式（如v1.0）的标签才会触发此工作流
  pull_request:
    branches: [ main ]  # 只有针对 main 分支的 PR 才会触发此工作流

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      flutter_version: '2.2.3'
    steps:
      - name: Determine Flutter version
        run: echo "::set-output name=flutter_version::2.2.3"  # 设置 Flutter 版本，以便后续任务使用

  build_and_test:
    needs: prepare
    runs-on: ubuntu-latest
    strategy:
      matrix:
        platform: [apk, ios]
        include:
          - platform: apk
            os: ubuntu-latest
          - platform: ios
            os: macos-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2  # 检出仓库代码
      - name: Setup Flutter
        uses: subosito/flutter-action@v1
        with:
          flutter-version: ${{ needs.prepare.outputs.flutter_version }}  # 使用之前确定的 Flutter 版本
      - name: Install dependencies
        run: flutter pub get  # 安装 Flutter 项目依赖
      - name: Run tests
        run: flutter test  # 运行所有测试
      - name: Build
        run: |
          if [ "${{ matrix.platform }}" == "apk" ]; then
            flutter build apk --release  # 构建 Android APK
          else
            flutter build ios --release --no-codesign  # 构建 iOS 应用，无需代码签名
        shell: bash
      - name: Archive Artifacts
        uses: actions/upload-artifact@v2
        with:
          name: ${{ matrix.platform }}-release
          path: |
            build/app/outputs/flutter-apk/*.apk
            build/ios/iphoneos/*.app

  deploy:
    needs: build_and_test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Download Artifacts
        uses: actions/download-artifact@v2
        with:
          name: apk-release
      - name: Deploy
        run: |
          VERSION=${GITHUB_REF#refs/tags/}
          echo "Deploying version $VERSION to production"
          # 这里可以添加具体的部署命令，例如上传到应用商店或服务器