系统环境：macOS Mojave 10.14.6

1. 安装 RVM

• 开始安装

1 | curl -L get.rvm.io | bash -s stable

• 进入目录

1 | source ~/.bashrc
2 | source ~/.bash_profile

• 成功后查看版本

1 | rvm -v

2. Ruby升级

• 获取Ruby版本

1 | ruby -v

• 对比Ruby版本

1 | rvm list known

• 更新Ruby

1 |rvm install 2.7.0-preview1

3. 更换Ruby源

• 查看当前源

1 | gem sources -l

• 移除默认源

1 | gem sources --remove https://ruby.taobao.org/

• 替换源

1 | gem sources -a https://gems.ruby-china.com/

（尾巴这条斜杆需要斟酌移除）

4. 安装CocoaPods

1. OS X 10.11之前系统的安装cocoapods 指令

1 | $ sudo gem install cocoapods

2. OS X 10.11以后系统的安装cocoapods 指令

1 | $ sudo gem install -n /usr/local/bin cocoa pods

• 安装

1 | pod setup

• 完成之后

1 | pod --version //查看版本

• 测试一下

1 | pod search AFNetworking

使用流程

1 | cd 目标路径
2 | pod init

• 然后操作Podfile文件，一般使用vim

  # Uncomment the next line to define a global platform for your project
platform :ios, '8.0'

target 'ProjectName' do
  # Uncomment the next line if you're using Swift or would like to use dynamic frameworks
  # use_frameworks!

  pod 'AFNetworking'

end

• 完成它

1 | pod install

• 如若比较慢，可使用{🔽}，无须更新本地库情况下（更新同理）

1 | pod install --no-repo-update

打开白色工程 projectName.xcworkspace

5. 更新CocoaPods

1 | sudo gem install -n /usr/local/bin cocoapods --pre

6. 更新CocoaPods 1.8.+版本本地库

• 1.8+强制安装了新的源trunk，采用cdn替换了原本的master
• 直接通过cdn方式更新本地库

iMac:mac$ pod install
    Analyzing dependencies
    Adding spec repo `trunk` with CDN `https://cdn.cocoapods.org/`
    Downloading dependencies
    Generating Pods project
    Integrating client project
    Pod installation complete! There are 28 dependencies from the Podfile and 32 total pods installed.

问题与解决

1. RPC failed; curl 56 LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54

   
   5632399-411ef4739da26721.png

• 可使用如下命令解决：

git clone https://git.coding.net/CocoaPods/Specs.git ~/.cocoapods/repos/master

///因Coding停止维护，可切别的源~
* https://code.aliyun.com/Magi/CocoaPods.git   
* https://gitclub.cn/CocoaPods/Specs.git `推荐`

2. 如果pod install中发现：

You have either:
 * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`.
 * mistyped the name or version.
 * not added the source repo that hosts the Podspec to your Podfile.

Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by default.

• 可尝试直接更新最新版本

1 | sudo gem install cocoapods --pre

或者pod repo update or with pod install --repo-update

• 如果还是不行，可移除缓存重新安装

// 移除本地master
sudo rm -fr ~/.cocoapods/repos/master
// 移除本地缓存
sudo rm -fr ~/Library/Caches/CocoaPods/
// 重新setup，如果很慢可使用问题1的解决方法（git clone）
pod setup --verbose

3. 更新时，CocoaPods 1.8.0 的trunk问题

[!] CDN: trunk URL couldn't be downloaded: https://raw.githubusercontent.com/CocoaPods/Specs/master/Specs/ Response: 400

• 可使用脱离trunk方式，打开podfile文件，顶部添加{🔽}，指定旧方式下载

//source `源地址` podfile文件中指定source源为master：
source 'https://github.com/CocoaPods/Specs.git'

• 可移除trunk

1 | pod repo remove trunk

• podfile文件中添加source源后，pod install和pod update可以正常操作，但是pod search有些库却不正常。

解决办法：1. podfile文件中指定source源为master：source 'https://github.com/CocoaPods/Specs.git' 2.执行pod repo remove trunk移除trunk源 执行完后，pod search就都正常了！ 。

4. 更新系统与Xcode后，出现 Failed to extract git version from ·git --version· 🔽

macdeMacBook-Air:~ mac$ pod --version
Traceback (most recent call last):
    7: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/bin/ruby_executable_hooks:24:in `<main>'
    6: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/bin/ruby_executable_hooks:24:in `eval'
    5: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/bin/pod:23:in `<main>'
    4: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/bin/pod:23:in `load'
    3: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/lib/ruby/gems/2.7.0/gems/cocoapods-1.8.4/bin/pod:55:in `<top (required)>'
    2: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/lib/ruby/gems/2.7.0/gems/cocoapods-1.8.4/lib/cocoapods/command.rb:49:in `run'
    1: from /Users/mac/.rvm/rubies/ruby-2.7.0-preview1/lib/ruby/gems/2.7.0/gems/cocoapods-1.8.4/lib/cocoapods/command.rb:130:in `verify_minimum_git_version!'
/Users/mac/.rvm/rubies/ruby-2.7.0-preview1/lib/ruby/gems/2.7.0/gems/cocoapods-1.8.4/lib/cocoapods/command.rb:118:in `git_version': Failed to extract git version from `git --version` ("xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun\\n") (RuntimeError)

• 解决方法

1 | xcode-select --install