CODEWITHSUNDEEP
objective-cxcodedelegatesprotocols
Thizzer
Thizzer

Reputation: 16663

require class in protocol

In a method in my protocol I require the class defined in the interface below, how do I solve this;

@protocol MyDelegate
-(void) somethingFinished:(MyObject*)object anyOtherData:(NSData*)data;
@end

@interface MyObject : NSObject
{
   id<MyDelegate> delegate;
}

// methods

@end

I get the error;

Expected identifier before ':' token

Upvotes: 1

Views: 433

Answers (1)

Vladimir
Vladimir

Reputation: 170859

Use forward declaration:

either:

@class MyObject;

@protocol MyDelegate
-(void) somethingFinished:(MyObject*)object anyOtherData:(NSData*)data;
@end

@interface MyObject : NSObject
{
   id<MyDelegate> delegate;
}
@end

or 

@protocol MyDelegate;

@interface MyObject : NSObject
{
   id<MyDelegate> delegate;
}
@end

@protocol MyDelegate
-(void) somethingFinished:(MyObject*)object anyOtherData:(NSData*)data;
@end

Upvotes: 4

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