Xcode6新建的工程没有Frameworks文件夹了?!原来是这样
http://stackoverflow.com/questions/24181062/default-frameworks-missing-in-xcode-6-beta
They are imported as modules and linked automatically. In fact you could do this in Xcode5.x as well (for system frameworks) provided that you set Enable Modules
& Link Frameworks Automatically
toYes
in Apple LLVM 5.1 - Language - Modules
section on Build Settings