Xcode doesn't see the file

Question

I have this file structure:

But Xcode doesn't see file for :#import "VKSdk.h" , because it's in another project, what do I need to do:

Answer 1

Perhaps consider looking into how to work with workspaces in Xcode. It offers great features when working with multiple interconnected projects.

Check this out https://developer.apple.com/library/ios/featuredarticles/XcodeConcepts/Concept-Workspace.html

Answer 2

VK guid said to add only sdk.xcodeproj file, so it didn't see all the files in this added project, but when I tried to cope these files into the project, it failed to launch.

I added $(PROJECT_DIR)/DatingService/3d\ Party/VKAPI/sdk into Header Search Paths of Build Settings and now it works.