Question

I’ve the following line of code

@property (nonatomic, retain) id<MessageItemProtocol> *message;

Here, i am getting an error : “property with ‘retain’ (or strong) attribute must be of object type ”

I know that i am getting an error because it’s a protocol. so, then what should be it’s property type then ??

Answer 1

Try

@property (nonatomic, retain) id<MessageItemProtocol> message;

or

@property (nonatomic, retain) NSObject<MessageItemProtocol> *message;