關(guān)于CocoaPods力穗，是OS X和iOS下的一個第三方類庫管理工具舞虱，它的好處這里不多說，主要說下如何安裝CocoaPods类茂。

CocoaPods的安裝需要Ruby環(huán)境耍属，Mac系統(tǒng)都自帶Ruby，通過下面終端命令查看Ruby版本：
ruby -v

~$ruby -v
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]

CocoaPods支持的Ruby最低版本是2.2.2巩检，如果自己的版本低于2.2.2就需要更新升級Ruby：
sudo gem update --system

更換Ruby鏡像

Ruby默認的源地址是國外網(wǎng)絡地址厚骗，通過下面終端命令查看當前鏡像地址：
gem sources -l

~$gem sources -l
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18/rbconfig.rb:215: warning: Insecure world writable dir /Applications/Cocos/tools/ant/bin in PATH, mode 040777
*** CURRENT SOURCES ***

https://rubygems.org/

首先移除當前鏡像
gem sources --remove https://rubygems.org/

~$gem sources --remove https://rubygems.org/
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18/rbconfig.rb:215: warning: Insecure world writable dir /Applications/Cocos/tools/ant/bin in PATH, mode 040777
https://rubygems.org/ removed from sources

然后添加國內(nèi)最新Ruby鏡像地址
gem sources -a https://gems.ruby-china.com/

~$gem sources -a https://gems.ruby-china.com/
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18/rbconfig.rb:215: warning: Insecure world writable dir /Applications/Cocos/tools/ant/bin in PATH, mode 040777
https://gems.ruby-china.com/ added to sources

這時候再查看鏡像地址就是這樣的了

~$gem sources -l
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18/rbconfig.rb:215: warning: Insecure world writable dir /Applications/Cocos/tools/ant/bin in PATH, mode 040777
*** CURRENT SOURCES ***

https://gems.ruby-china.com/

安裝CocoaPods

Ruby環(huán)境安裝好以后，接下來就是安裝CocoaPods兢哭，終端輸入：
sudo gem install cocoapods

~$sudo gem install cocoapods
Password:
......

Done installing documentation for concurrent-ruby, i18n, thread_safe, tzinfo, activesupport, nap, fuzzy_match, cocoapods-core, claide, cocoapods-deintegrate, cocoapods-downloader, cocoapods-plugins, cocoapods-search, cocoapods-stats, netrc, cocoapods-trunk, cocoapods-try, molinillo, atomos, CFPropertyList, colored2, nanaimo, xcodeproj, escape, fourflusher, gh_inspector, ruby-macho, cocoapods after 33 seconds
28 gems installed

如果終端出現(xiàn)上面的提示领舰，表示安裝成功。到這里還剩最后一步，還需執(zhí)行命令：
pod setup
這一步可能需要耐心等待冲秽，需要下載上百M的文件舍咖。

~$pod setup
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18/rbconfig.rb:215: warning: Insecure world writable dir /Applications/Cocos/tools/ant/bin in PATH, mode 040777
Setting up CocoaPods master repo
  $ /usr/bin/git clone https://github.com/CocoaPods/Specs.git master --progress
  Cloning into 'master'...
  remote: Enumerating objects: 179, done.        
  remote: Counting objects: 100% (179/179), done.        
  remote: Compressing objects: 100% (135/135), done.        
  remote: Total 2819986 (delta 66), reused 64 (delta 42), pack-reused 2819807        
  Receiving objects: 100% (2819986/2819986), 614.27 MiB | 834.00 KiB/s, done.
  Resolving deltas: 100% (1676501/1676501), done.
  Checking out files: 100% (304760/304760), done.
Setup completed

至此，CocoaPods安裝完成锉桑！

使用CocoaPods

在使用之前排霉，我們先驗證下CocoaPods是否安裝成功，搜索一個第三方庫民轴。終端輸入：
~$pod search AFNetworking
正常情況下攻柠，這是會提示Creating search index for spec repo 'master'...等待一會就會出現(xiàn)搜索結(jié)果了（也可能需要等待很長時間，大約二十幾分鐘后裸，不要著急瑰钮，耐心等待就行??）。

屏幕快照

接下來，終端進入iOS項目工程的根目錄（就是*.xcodeproj所在的目錄）祈搜，然后創(chuàng)建Podfile文件，終端輸入：
~$touch Podfile

這時工程目錄下多了一個Podfile文件士八。

現(xiàn)在我們要接入Admob廣告SDK容燕，就可以使用CocosPods的方法，用編輯器打開Podfile文件婚度，并將下面的的代碼加到里面：

platform :ios, '8.0'
target 'MyApp' do
pod 'Google-Mobile-Ads-SDK'
end

其中蘸秘，MyApp應該是你項目中的Target名稱。文件保存后蝗茁，在終端中輸入~$pod install醋虏。

安裝成功后，工程目錄中會生成一個*.xcworkspace文件哮翘。

以后打開工程就打開這個文件颈嚼，不再使用*.xcodeproj文件。

問題報錯

當我們打開*.xcworkspace文件使用Xcode編譯時饭寺，可能會報這么一個錯誤：

diff: /../Podfile.lock: No such file or directory
diff: /Manifest.lock: No such file or directory
error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.

問題解決參考博客：http://www.reibang.com/p/5d6e1942dfb1