When I used Xcode 6 to develop an iOS app, I found Xcode cannot index names when I set up a separate header file.
The detailed situation is like this:
I set up a separate header file named TestClass.h, and imported Foundation/Foundation.h. However, no auto completion when I tried to enter NSObject, and when I press COMMAND and click Foundation/Foundation.h, "Symbol not found" appears.
I have tried to delete the derived data and re-open Xcode, but it did not help.
Is there any solution to this problem?