系统Framework路径:(右键Xcode,显示包内容)
/Applications/Xcode8.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/UIKit.framework
Xcode自定义代码块保存路径:
/Users/yaoliangjun/Library/Developer/Xcode/UserData/CodeSnippets
Application Loader路径:(用于上传App到App Store)
/Applications/Xcode8.3.app/Contents/Applications/Application\ Loader.app