1.打开终端
2 移除现有 Ruby 默认源 输入以下指令
$gem sources --remove https://rubygems.org/
3.使用新的源 输入以下指令
$gem sources -a https://ruby.taobao.org/
4.验证新源是否替换成功 输入以下指令
$gem sources -l
5.安装 CocoaPods
$sudo gem install cocoa pods
//–––––––––––那么问题来了——没遇到的自动跳过————————————
错误提示1
Error installing cocoapods: activesupport requires Ruby version >= 2.2.2.
解决方案 ：
1、安装 RVM baby 版本管理器
$ curl -L get.rvm.io | bash -s stable
//________等安装完成 出现下面这行提示以下___________
In case of problems: https://rvm.io/helpandhttps://twitter.com/rvm_io
执行
$source ~/.bashrc
$source ~/.bash_profile
测试是否安装正常
$rvm -v
//________提示以下___________
rvm 1.27.0 (latest) by Wayne E. Seguin, Michal Papis[https://rvm.io/]
2、用RVM升级Ruby查看当前ruby版本
$ruby -v
$rvm list known
//________提示以下___________
# MRI Rubies
[ruby-]1.8.6[-p420]
[ruby-]1.8.7[-head] # security released on head
[ruby-]1.9.1[-p431]
[ruby-]1.9.2[-p330]
[ruby-]1.9.3[-p551]
[ruby-]2.0.0[-p648]
[ruby-]2.1[.8]
[ruby-]2.2[.4]
[ruby-]2.3[.0]
[ruby-]2.2-headruby-head
# for forks use: rvm install ruby-head---url https://github.com/github/ruby.git --branch 2.2
# JRuby
jruby-1.6[.8]
jruby-1.7[.23]
jruby[-9.0.5.0]
jruby-head
# Rubinius
rbx-1[.4.3]
rbx-2.3[.0]
rbx-2.4[.1]
rbx[-2.5.8]
rbx-head
# Opal
opal
# Minimalistic ruby implementation - ISO 30170:2012
mruby[-head]
# Ruby Enterprise Edition
ree-1.8.6
ree[-1.8.7][-2012.02]
# GoRuby
goruby
# Topaz
topaz
# MagLev
maglev[-head]
maglev-1.0.0
# Mac OS X Snow Leopard Or Newer
macruby-0.10
macruby-0.11
macruby[-0.12]
macruby-nightly
macruby-head
# IronRuby
ironruby[-1.1.3]
ironruby-head
//___________________
安装ruby 2.2.2 执行
$rvm install 2.2.2
干货1：
安装ruby遇到" Installing Homebrew - Brew Command Not Found"命令找不到解决方案：
Check XCode is installed or not.
$gcc --version
$ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$brew doctor
$brew update.
完成后 执行
$ruby -v
//–––––打印输出–––––––
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-darwin14]
6 继续安装 CocoaPods
$sudo gem install cocoa pods
//______安装成功提示如下______
Done installing documentation for nap, fourflusher, escape, colored, concurrent-ruby, thread_safe, tzinfo, i18n, activesupport, claide, xcodeproj, molinillo, cocoapods-try, netrc, cocoapods-trunk, cocoapods-stats, cocoapods-search, cocoapods-plugins, cocoapods-downloader, cocoapods-deintegrate, fuzzy_match, cocoapods-core, cocoapods after 21 seconds,23 gems installed
$pod setup
备注：苹果系统升级 OS X EL Capitan 后安装改为:
$sudo gem install -n /usr/local/bin cocoapods
$pod setup
干货2：
CocoaPods无限卡在Setting up CocoaPods master repo解决方案：
对于初次使用CocoaPods的同学，即使你不使用pod setup命令，在你初次执行pod install命令时，系统也会自动执行pod setup。而由于网络不稳定的原因，不挂VPN是不可能成功执行pod setup的。(我大天朝的墙啊~~~~)
$ pod repo remove master
$ git clone https://github.com/CocoaPods/Specs.git ~/.cocoapods/repos/master
$ pod repo update
7 更新 gem
$sudo gem update --system
8 新建工程，并在终端用 cd 指令到文件夹内
$pod search 第三方
9 新建 Podfile 文件
$ touch Podfile
10 编辑 Podfile 文件，并写入要添加的第三方库(cocoapod1.0.1版本Podfile文件的内容格式要求发生了变化，必须指出指出所用第三方库的target)
platform:ios, '8.0'
#use_frameworks!个别需要用到它，比如reactiveCocoa
target 'XXXApp' do
pod 'AFNetworking', '~> 2.3.1'<-------第三方
end
11 导入第三方库
$pod install --no-repo-update
12 退出终端
