duplicate interface declaration for class 'test_coredataAppDelegate'

Question

two errors suddenly fired in this piece of code - duplicate interface declaration for class \'test_coredataAppDelegate\' - redefinition of \'struct test_coredataAppDelegat

Answer 1

I have got the solution for this first copy that file for example video.m is giving this error so copy this file and delete that file and just paste it again and add that file to project again :)