Ios Offline Map

Hi, i have an app, that scans bar codes, and gives back information (price,name,place of the shop i bought the product), i would like to use theese coordinates in an apple or google map (pref offline).
I tried to use the mapkit i found in this forum,but with no luck (CLGFloat error, type missmatch).
I would like to use the app inside my app, on the same or different view.