Question

I’m new to Objective C (iOS) and I’m having a hard time figuring out this cryptic language.

I have no problem making a protocol (delegate) with one argument…

Person.h:

protocol PersonDetailsDelegate <NSObject>
@required
-(void) GetName:(NSString *) name;
@end

Person.m:

- (void) FireUpDelegate {
    [self.delegate GetName: @"Michael"];
}

FirstViewController.m:

- (void) GetName: (NSString *) name {
    NSLog(@"%@", name);    
}

But I can’t figure out using two arguments….

Person.h:

@protocol PersonDetailsDelegate <NSObject>
@required
-(void) GetName:(NSString *) name; getAge:(int *) age;
@end

Person.m:

- (void) FireUpDelegate {
    [self.delegate GetName: @"Michael"; getAge: 49];
}

FirstViewController.m:

- (void) GetName: (NSString *) name getAge: (int) age {
    NSLog(@"%@ .. %i", name, age);    
}

I get a quite some errors – any idea where it goes wrong?

Thanks a million!!

Mojo

Answer 1

You have one ; too many (after name). It should be:

-(void) GetName:(NSString *) name getAge:(int) age;

The ; makes the compiler think the declaration of the method is finished, and that the method name is GetName:. If you remove the ;, it is properly parsed as GetName:getAge:.

EDIT: changed (int *) to (int).