ios - Linker command failed with exit code 1 When add an unwind function to view controller -


i developing 1 ipad application using storyboard. in application have popup , view controller. if add function like:

-(ibaction)unwindcouponpaymenttoorderdetailsview:(uistoryboardsegue *)unwindsegue{ }

my application fails compile , shows error:

linker command failed exit code 1 (use -v see invocation).

i don't know error. check 2 or 3 times after code add view controller compilation become failed. remove above mentioned code again try compile application time same error coming. check out latest code svn work stage working fine if add function view controller again application become failed. don't know problem.


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