每种语言发展到一个阶段，就会出现相应的依赖管理工具，例如 Java 语言的 Maven，nodejs 的 npm。随着 iOS 开发者的增多，业界也出现了为 iOS 程序提供依赖管理的工具，它的名字叫做：CocoaPods。
CocoaPods 的安装和使用介绍
安装
如果你的 gem 太老，可能也会有问题，可以尝试用如下命令升级 gem:
sudo gem update --system
查看当前ruby 的软件源
gem sources -l
ruby 的软件源 https://rubygems.org 因为使用的是亚马逊的云服务，所以被墙了，需要更新一下 ruby 的源，使用如下代码将官方的 ruby 源替换成国阿里云的源：
gem sources --remove https://rubygems.org/
gem sources -a https://gems.ruby-china.com //
http://rubygems-china.oss.aliyuncs.com/
这个更新Mac系统10.14.x后就不起作用了,后面会导致cocoaPods升级不到最新, gem sources -l
安装方式异常简单 , Mac 下都自带 ruby，使用 ruby 的 gem 命令即可下载安装：
安装cocoapods
sudo gem install cocoapods
上面可能会报错:
bogon:~ HJiang$ sudo gem install cocoapods
Password:
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/fuzzy_match
本人是这样解决的:
sudo gem install -n /usr/local/bin cocoapods
Successfully installed fuzzy_match-2.0.4
Fetching: cocoapods-core-1.2.1.gem (100%)
Successfully installed cocoapods-core-1.2.1
Fetching: cocoapods-1.2.1.gem (100%)
Successfully installed cocoapods-1.2.1
Parsing documentation for fuzzy_match-2.0.4
Installing ri documentation for fuzzy_match-2.0.4
Parsing documentation for cocoapods-core-1.2.1
Installing ri documentation for cocoapods-core-1.2.1
Parsing documentation for cocoapods-1.2.1
Installing ri documentation for cocoapods-1.2.1
3 gems installed
使用 CocoaPods 的镜像索引
pod setup
这步可能会有点慢,本人大概用了40分钟,而且网络很好的情况下.
pod setup可能会报如下错误,本人使用电脑连接手机热点解决的.
HJiangPro:~ HJiang$ pod setup Setting up CocoaPods master repo $ /usr/bin/git clone https://github.com/CocoaPods/Specs.git master --progress Cloning into 'master'... fatal: unable to access 'https://github.com/CocoaPods/Specs.git/': LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54 [!] /usr/bin/git clone https://github.com/CocoaPods/Specs.git master --progress Cloning into 'master'... fatal: unable to access 'https://github.com/CocoaPods/Specs.git/': LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54
成功:
HJiangPro:~ HJiang$ pod setup Setting up CocoaPods master repo $ /usr/bin/git clone https://github.com/CocoaPods/Specs.git master --progress Cloning into 'master'... remote: Enumerating objects: 568, done. remote: Counting objects: 100% (568/568), done. remote: Compressing objects: 100% (509/509), done. remote: Total 2578734 (delta 237), reused 35 (delta 35), pack-reused 2578166 Receiving objects: 100% (2578734/2578734), 587.65 MiB | 303.00 KiB/s, done. Resolving deltas: 100% (1512641/1512641), done. Checking out files: 100% (281045/281045), done. CocoaPods 1.6.0.beta.2 is available. To update use: `sudo gem install cocoapods --pre` [!] This is a test version we'd love you to try. For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.6.0.beta.2 Setup completed
新建Podfile,编辑内容:
#要兼容的最低版本号 platform :ios, ‘8.0’ target 'testCocoaPods’ do #如果是swift项目，这句话保留；如果是OC项目，这句话要删除 #use_frameworks! #添加第三方类库 pod 'AFNetworking' #添加指定版本号的第三方类库 pod 'SVProgressHUD', '1.1.3' end
也可以使用命令行方式,进入项目的目录,使用终端
pod init
这样自动生成Podfile文件.
新增项目testCocoaPods,把Podfile拖入项目中,跟.xcodeproj同目录,然后运行
pod install
待安装完成后
现在，你的所有第三方库都已经下载完成并且设置好了编译参数和依赖，需要记住：
- 使用 CocoaPods 生成的 .xcworkspace 文件来打开工程，而不是以前的 .xcodeproj 文件。
- 每次更改了 Podfile 文件，你需要重新执行一次
pod update命令。
cocoapods升级
通过命令:
sudo gem install -n /usr/local/bin cocoapods --pre
成功提示:
bogon:~ HJiang$ sudo gem install -n /usr/local/bin cocoapods --pre Fetching: claide-1.0.2.gem (100%) Successfully installed claide-1.0.2 Fetching: xcodeproj-1.5.2.gem (100%) Successfully installed xcodeproj-1.5.2 Fetching: molinillo-0.6.3.gem (100%) Successfully installed molinillo-0.6.3 Fetching: cocoapods-core-1.4.0.beta.1.gem (100%) Successfully installed cocoapods-core-1.4.0.beta.1 Fetching: cocoapods-1.4.0.beta.1.gem (100%) Successfully installed cocoapods-1.4.0.beta.1 Parsing documentation for claide-1.0.2 Installing ri documentation for claide-1.0.2 Parsing documentation for xcodeproj-1.5.2 Installing ri documentation for xcodeproj-1.5.2 Parsing documentation for molinillo-0.6.3 Installing ri documentation for molinillo-0.6.3 Parsing documentation for cocoapods-core-1.4.0.beta.1 Installing ri documentation for cocoapods-core-1.4.0.beta.1 Parsing documentation for cocoapods-1.4.0.beta.1 Installing ri documentation for cocoapods-1.4.0.beta.1 5 gems installed
xcode cocoapods插件 cocoapods-xcode-plugin