下载Flutter
- Google下载地址：
https://storage.googleapis.com/dart-archive/channels/stable/release/2.3.0/sdk/dartsdk-windows-x64-release.zip
https://storage.googleapis.com/flutter_infra/releases/stable/windows/flutter_windows_v1.5.4-hotfix.2-stable.zip- 国内镜像：
https://storage.flutter-io.cn/dart-archive/channels/stable/release/2.3.0/sdk/dartsdk-windows-x64-release.zip
https://storage.flutter-io.cn/flutter_infra/releases/stable/windows/flutter_windows_v1.5.4-hotfix.2-stable.zip提示：
- 将
storage.googleapis.com替换成storage.flutter-io.cn - 如果只开发移动app，只需要flutter即可，不需要dart