Flutter下载或Building flutter tool...慢问题解决方案

一、下载慢

git clone -b stable https://github.com/flutter/flutter.git 比较缓慢解决方案如下
请配置环境变量，以Linux为例：
打开/etc/profile或~/.bashrc，添加环境变量
export FLUTTER_STORAGE_BASE_URL=https://mirrors.sjtug.sjtu.edu.cn
export PUB_HOSTED_URL=https://dart-pub.mirrors.sjtug.sjtu.edu.cn

二、Building flutter tool...慢

flutter doctor时Building flutter tool...缓慢
添加如下环境变量

#export FLUTTER_STORAGE_BASE_URL=https://mirrors.sjtug.sjtu.edu.cn
#export PUB_HOSTED_URL=https://dart-pub.mirrors.sjtug.sjtu.edu.cn
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn