1、执行sudo gem install cocoapods出现错误
ERROR: While executing gem ... (Gem::DependencyError)
Unable to resolve dependencies: cocoapods requires cocoapods-core (= 1.2.1), cocoapods-downloader (< 2.0, >= 1.1.3), cocoapods-trunk (< 2.0, >= 1.2.0), molinillo (~> 0.5.7), xcodeproj (< 2.0, >= 1.4.4), colored2 (~> 3.1), ruby-macho (~> 1.1)
执行sudo gem update --system
会出现提示输入密码的框，输入你的开机密码即可
2、继续执行sudo gem install cocoapods出现错误
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/xcodeproj
在终端中输入：sudo nvram boot-args="rootless=0"; sudo reboot 然后你的电脑会重启 之后再输入 sudo gem install cocoapods -V 就可以了
验证cocoapods安装成功
pod --version
