Cocoa KeysCocoa KeysCocoa and Cocoa Touch are the environments used to define apps that run in macOS, iOS, tvOS, and watchOS. The keys associated with the Cocoa environments provide support for Interface Builder nib files and provide support for other user-facing features vended by your bundle. Cocoa keys use the prefix NS to distinguish them from other keys. For information about developing Cocoa Touch app
【iOS9】HTTP→HTTPSだと！App Transport Security(ATS)について
