objective c - Why am I getting this error? CCSprite copyWithZone unrecognized selector sent to instance -


i'm having tough time figuring out why i'm running error:

ccsprite copywithzone unrecognized selector sent instance

i keep reference rectanglesprite in rectangle object. synthesize in rectangle.m file. doing incorrectly way i'm trying store rectanglesprite in rectangle's rectanglesprite property?

rectangle.h

#import "ccnode.h" #import "cocos2d.h" #import "ccsprite.h"  @interface rectangle : ccnode {     ccsprite *rectanglesprite;     }  @property(nonatomic,readwrite,copy) ccsprite *rectanglesprite;  @end

cocosscene.m

... ccsprite *rectanglesprite = [ccsprite spritewithfile:@"rectangle.png"]; rectangle *rectangle = [[rectangle alloc] init]; rectangle.rectanglesprite = rectanglesprite; ...

you have defined rectanglesprite property copy. means ccsprite class must conform nscopying protocol (which means must implement copywithzone: method).

the error indicates ccsprite not implement copywithzone:.

if wish retain value, rid of copy in property declaration. use strong (or retain using mrc) instead of copy.

you use copy when want create copy of object when assigning property. requires class support copying.


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