1.去github上下载Flutter安装包
https://github.com/flutter/flutter/releases/tag/2.0.4
2.将安装包zip解压到你想安装Flutter SDK的路径
(如:C:\src\Flutter;注意,不要将Flutter安装到需要一些高权限的路径如C:\Program Files\)
3.配置系统环境变量和用户环境变量
(1)用户环境变量:
PUB_HOSTED_URL:https://pub.Flutter-io.cn
FlutteR_STORAGE_BASE_URL:https://storage.Flutter-io.cn
(2)系统环境变量
在PATH里:添加一个你解压缩好的Flutter\bin的全路径
4.在你解压缩的文件夹里用git命令行执行一条命令:
git clone -b beta https://github.com/Flutter/Flutter.git
如图: