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在我在下面的代码中提到的WebServiceAPI.h中,我声明了一个具有所需metod - (void)apiFinished:(WebServiceAPI *)api的协议。编译代码时,出现'WebServiceAPI'之前出现此错误:WebServiceAPI.h:13:error:expected')'(第13行是声明协议方法的地方)。我在哪里做错了?在Objective-C协议声明中出现错误之前的预期')'
#import <Foundation/Foundation.h>
@protocol WebServiceAPIDelegate
@required
-(void) apiFinished:(WebServiceAPI *)api;
@end
@interface WebServiceAPI : NSObject{
NSString *address;
NSMutableData *dataWebService;
}
@property (nonatomic, assign) id <WebServiceAPIDelegate>delegate;
@property(nonatomic, retain) NSString *address;
@property(nonatomic, retain) NSMutableData *dataWebService;
@end