Cocoapods的安装报错 - Error installing pods:activesupport requires Ruby version >=2.2.2

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..

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.[-p420]

[ruby-]1.8.[-head] # security released on head

[ruby-]1.9.[-p431]

[ruby-]1.9.[-p330]

[ruby-]1.9.[-p551]

[ruby-]2.0.[-p648]

[ruby-]2.1[.]

[ruby-]2.2[.]

[ruby-]2.3[.]

[ruby-]2.2-headruby-head

# for forks use: rvm install ruby-head---url https://github.com/github/ruby.git --branch 2.2

# JRuby

安装ruby 2.2.2 执行

$rvm install 2.2.

如果打印：

……  ruby-2.2. - #validate archive
    ruby-2.2. - #extract
    ruby-2.2. - #validate binary
    ruby-2.2. - #setup
    ruby-2.2. - #gemset created /Users/abc/.rvm/gems/ruby-2.2.@global
    ruby-2.2. - #importing gemset
   /Users/abc/.rvm/gemsets/global.gems..............................
    ruby-2.2. - #generating global wrappers........
    ruby-2.2. - #gemset created /Users/abc/.rvm/gems/ruby-2.2.
    ruby-2.2. - #importing gemsetfile /Users/abc/.rvm/gemsets/default.gems
 　　evaluated to empty gem list
    ruby-2.2. - #generating default wrappers........
    Updating certificates in '/etc/openssl/cert.pem'.
    mkdir: /etc/openssl: Permission denied
    mkdir -p "/etc/openssl" failed, retrying with sudo
    LiuWenqiang password required for 'mkdir -p /etc/openssl':
    and sudo mkdir worked

则说明安装成功了

打印代码：

Done with Command Line Tools (OS X 10.11) for Xcode
Done.
==> /usr/bin/sudo /bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> Installing the Command Line Tools (expect a GUI popup):
==> /usr/bin/sudo /usr/bin/xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
Failed during: /usr/bin/sudo /usr/bin/xcode-select --install
Requirements installation failed with status: .

4.  继续安装 CocoaPods

$sudo gem install cocoa pods

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

$pod setup

5.  更新 gem

$sudo gem update --system

6.  新建一个项目，名字PodTest

7.    $ cd  项目路径 (中间有空格，)

    cd /Users/lucky/Desktop/PodTest   

8.   建立Podfile（配置文件）

 $vim Podfile

键盘输入" i "进入编辑模式，输入

platform :ios, '7.0' 

pod 'MBProgressHUD', '~> 0.8’ （之前的，我的电脑上已经无效了，报错： [!] The dependency `MBProgressHUD (~> 0.8)` is not used in any concrete target.）

（现在使用：MyApp 替换成自己的项目名）

target 'MyApp' do

pod 'AFNetworking', '2.6'

pod 'ORStackView', '3.0'

end

然后

按Esc，并且输入“ ：”号进入vim命令模式，然后在冒号后边输入wq

再输入

 $pod install

注意：现在打开项目不是点击 PodTest.xodeproj了，而是点击 PodTest.xcworkspace

为了确定AFNetworking是否支持CocoaPods，可以用CocoaPods的搜索功能验证一下。在终端中输入：

$ pod search AFNetworking

###如果安装失败

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 (-- revision ) [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  seconds, 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 第三方库

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

xcode-select: error: command line tools are already installed, use "Software Update" to install updates
Failed during: /usr/bin/sudo /usr/bin/xcode-select --install
Requirements installation failed with status: .

此时查询Xcode，切换到另一个环境：

$ sudo xcode-select --switch /Library/Developer/CommandLineTools/
Password:
$ git
usage: git [--version] [--help] [-C <path>] [-c name=value]
[--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
[-p | --paginate | --no-pager] [--no-replace-objects] [--bare]
[--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
<command> [<args>]

ERROR: Error installing cocoapods:
activesupport requires Ruby version >= 2.2..
localhost:~ zzz$ $curl -L get.rvm.io | bash -s stable
-bash: -L: command not found
localhost:~ zzz$ 

解决方法：

ruby -e "$(wget -qO - 'https://raw.github.com/mxcl/homebrew/go')" 

$ sudo xcode-select --switch /Library/Developer/CommandLineTools/

Password: （输入电脑权限密码）

$ git

usage: git [--version] [--help] [-C <path>] [-c name=value]

[--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]

[-p | --paginate | --no-pager] [--no-replace-objects] [--bare]

[--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]

<command> [<args>]