1、更新gem：sudo gem update --system
5、升级cocoapods：sudo gem install -n /usr/local/bin cocoapods --pre
6、查看升级后的cocoapods版本：pod --version
1、更新gem：sudo gem update --system
5、升级cocoapods：sudo gem install -n /usr/local/bin cocoapods --pre
6、查看升级后的cocoapods版本：pod --version