因为iOS和MacOS最终都是用XCode构建的，所以Flutter运行在Mac桌面上非常容易。
要让Flutter运行在Windows上，还是比较麻烦的。
环境
- 目前稳定版不支持Windows，可以新建个文件夹，下载master分支的Flutter
git clone -b master https://github.com/flutter/flutter.git
- 如果你已经安装过Flutter SDK,则需要修改你原来安装的时候配置的环境变量，让他指向master分支的Flutter SDK
- 开启Windows支持: flutter config --enable-windows-desktop
然后就可以创建项目了，执行命令flutter create desktop_flutter
运行Flutter的Windows项目
开启windows支持后，重启AS后，会有下面的下拉选项
直接运行会出错，因为Windows应用编译需要Visual Studio工具，
可以执行一下flutter doctor看看情况
点击链接下载visualstudio，安装选择桌面应用程序，如下图：
安装完成必须重启电脑，否则会报如下错误。
全部完成再次点击运行即可。
官方示例：
遇到的坑
因为我原来就有Flutter开发环境，针对Flutter桌面开发是从新修改的SDK路径，修改完成以后我在桌面直接查看Flutter版本号是正确的，就是我修改过的master分支的版本，但是我在AS里面用命令行查看Flutter版本号一直不对，还是我原来开发APP的版本号。并且我在AS配置里面也已经修改过Flutter和Dart的默认SDK路径了，在AS里面执行flutter --version一直报错：
Warning! The ‘flutter’ tool you are currently running is from a different Flutter repository than the one last used by this package. The repository from which the ‘flutter’ tool is currently executing will be used instead.
running Flutter tool: G:\Flutter\flutter
previous reference : G:\Flutter\Flutter_desktop\flutter
This can happen when you have multiple copies of flutter installed. Please check your system path to verify that you are running the expected version (run ‘flutter --version’ to see which flutter is on your path).
在网上搜基本上都是说让修改环境变量，然后执行Flutter clean —> flutter pub get，但是我环境变量没问题，并且也clean了，依然报这个错，最后实在没招了，重启了一下电脑，结果好了，心里默念一万遍CNM~~~，折腾了我大半天时间