ios - How make backward compatibility of AFnetworking library -


my app deployment target ios5. , downloaded afnetworking 2.0 library. causes error "property 'retain(or strong)' attribute must of object type"

  1. please tell me in details how remove error.i googled developer posted change deployment target ion ios6 . fine want app on ios 5 also.
  2. soppose have developer on app on ios5 . want support in ios7 now.how manage remove deprecated method , add new method in development .after new app run on ios 5 . or need create 2 build both.

please tell me in details , related information need consideration in development. thanks...........


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