CocoaPods系列 - 安装

打开终端，修改源并下载安装。

gem sources -l                               // 查看源列表
gem sources -remove https://rubygems.org/    // 将不需要的源移除掉
gem sources -a https://ruby.taobao.org/      // 添加淘宝源(当然你有其他可用的源也可以)
sudo gem install cocoapods                   // 安装cocoapods 

输入完之后可能需要输入用户密码，输入密码后按回车即可。

Password:

如果一切正常，会显示安装进度，完成后即可使用CocoaPods。

Fetching: nap-1.1.0.gem (100%)
Successfully installed nap-1.1.0
Fetching: cocoapods-core-1.0.0.beta.8.gem (100%)
Successfully installed cocoapods-core-1.0.0.beta.8
Fetching: claide-1.0.0.beta.3.gem (100%)
Successfully installed claide-1.0.0.beta.3
Fetching: cocoapods-deintegrate-1.0.0.beta.1.gem (100%)
Successfully installed cocoapods-deintegrate-1.0.0.beta.1
Fetching: cocoapods-downloader-1.0.0.beta.3.gem (100%)
Successfully installed cocoapods-downloader-1.0.0.beta.3
Fetching: cocoapods-plugins-1.0.0.beta.1.gem (100%)
Successfully installed cocoapods-plugins-1.0.0.beta.1
Fetching: cocoapods-search-1.0.0.beta.2.gem (100%)
Successfully installed cocoapods-search-1.0.0.beta.2
...(太长就不全部贴出来了)

---

安装过程中可能遇到的问题：

1. 早期网上的安装教程用http协议的淘宝源http://ruby.taobao.org/，但是淘宝已经更新为https协议了，所以报错。将源修改为https即可。

ERROR:  Could not find a valid gem 'cocoapods' (>= 0), here is why:
          Unable to download data from http://ruby.taobao.org/ - bad response Not Found 404 (http://ruby.taobao.org/latest_specs.4.8.gz)

2. 我从0.38更新到最新版本，会报错。使用以下指令来安装即可。

sudo gem install -n /usr/local/bin cocoapods

附问题链接：http://stackoverflow.com/questions/32810808/can-not-perform-pod-install-under-el-capitan-15a279b