Linker command failed with Undefined symbols for architecture i386

Question

i am trying to do the half page curl feature. This is the code I am using:

#import 


CATransition *animation = [CATransition         


        

Answer 1

your app is complaining it can not find CATransition Symbol.

Did you add the QuartzCore framework to your app?

If not add it: go to your target settings -> build phases -> link binary -> select the + button and select QuartzCore.

then import it where you need to use it:

      #import