1 Windows

(1) 下载 Flutter SDK

• https://docs.flutter.dev/development/tools/sdk/releases

• 将安装包zip解压到你想安装Flutter SDK的路径（如：E:)
• 在Flutter安装目录的flutter文件下找到flutter_console.bat，双击运行并启动flutter命令行，接下来，你就可以在Flutter命令行运行flutter命令了。

(2) 更改环境变量

由于在国内访问Flutter有时可能会受到限制，Flutter官方为中国开发者搭建了临时镜像，大家可以将如下环境变量加入到用户环境变量中：


然后重启windows文件资源管理器, 重新加载环境变量

2 Mac

(1) 下载Flutter SDK

• https://docs.flutter.dev/development/tools/sdk/releases

解压到/usr/local/bin下

unzip ~/Downloads/flutter_macos_2.8.1-stable.zip -d /usr/local/bin

(2) 更改环境变量

vi ~/.bash_profile

export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
export PATH=$PATH:/usr/local/bin/flutter/bin
export DART_HOME=~/usr/local/bin/flutter/bin/cache/dart-sdk/bin

source ~/.bash_profile

3 Linux

sudo snap install flutter --classic
flutter --version
flutter sdk-path