由于gem的更新引起 cocospod的一些安装步骤发生了一些变化。

1.首先更换Ruby的镜像地址来访问CocoaPods，打开终端输入以下命令：

（1）gem sources --remove  https://rubygems.org/   
（2）gem sources -a https://ruby.taobao.org/       
（3）gem sources -l

查看是否更换成功，终端显示如下字段则为更新成功

*** CURRENT SOURCES ***

https://ruby.taobao.org/

2.检查CocoaPods的版本

pod --version

 升级或安装最新版本（目前版本1.0.1）

           注意：如果cocoapods已经是1.0.1版本，则跳过该步骤直接进入第三个步骤。

升级命令：sudo gem update -n /usr/local/bin --system

	更新gem：sudo gem update --system

	安装命令：sudo gem install -n /usr/local/bin cocoapods

	pod安装：pod setup

pod setup <span style="font-family: 'microsoft yahei'; background-color: rgb(255, 255, 255);">第一次安装完成可能要一个小时左右，所以要耐心等待，如果这一步完成了，那么恭喜你已经成功安装了CocoaPods。想知道自己有没有安装完成，可以在终端输入以下命令：</span>

pod --version

显示出版本就说明成功了。

For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.1.0.beta.1

Setup completed

新建Podfile： touch Podfile

打开Podfile： open -a Xcode Podfile

platform:ios, '8.0'
target "YYKitWeiBoDemo" do
pod 'YYKit', '~> 1.0.7'
end

target

target "YourProjectName" do

pod install

可能遇到的错误提示及解决方法：

Error 1：

Error fetching http://ruby.taobao.org/:
bad response Not Found 404 (http://ruby.taobao.org/specs.4.8.gz)

改为：$ gem sources -a https://ruby.taobao.org/

Error 2：

ERROR:  While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/pod

解决方案：苹果系统升级 OS X EL Capitan 后会出现的插件错误，将安装流程 5.安装 CocoaPods 的 sudo gem install cocoapods

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

Error 3：

[!] Unable to satisfy the following requirements:
- `AFNetworking (~> 2.3.1)` required by `Podfile`
Specs satisfying the `AFNetworking (~> 2.3.1)` dependency were found, but they required a higher minimum deployment target.

解决方案：Podfile 文件 中   platform:ios, ‘8.0’  后边的 8.0 是平台版本号 ，一定要加上

Error4:

――――――――――MARKDOWN TEMPLATE ――――――――――

[!] Oh no, an error occurred.
Search for existing github issues similar to yours:
https://github.com/CocoaPods/CocoaPods/search?q=%28%2FUsers%2FMAXJ%2F.cocoapods%2Frepos%2Fmaster%2FCocoaPods-version.yml%29%3A+mapping+values+are+not+allowed+in+this+context+at+line+3+column+4&type=Issues
If none exists, create a ticket, with the template displayed above, on:
https://github.com/CocoaPods/CocoaPods/issues/new
Don't forget to anonymize any private data!

解决方案：

$ sudo rm -rf ~/.cocoapods/repos/master

$ pod setup

Ignoring json-1.8.2 because its extensions are not built.  Try: gem pristine json --version 1.8.2
Ignoring json-1.8.3 because its extensions are not built.  Try: gem pristine json --version 1.8.3
ERROR:  While executing gem ... (Errno::EACCES)
    Permission denied - /Library/Ruby/Gems/2.0.0/gems/sass-3.4.15/.yardopts

sudo gem install cocoa pods -v
    就会出现这样的提示：
ERROR:  While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/pod。