Add subtitle to annotation using UICRouteAnnotation - iphone

Question

UICRouteAnnotation *startAnnotation = [[UICRouteAnnotation alloc] initWithCoordinate [[routePoints objectAtIndex:0] coordinate]
title:#"Origin"
subtitle:#"Subtitle Here"
annotationType:UICRouteAnnotationTypeStart];
I am trying to add a subtitle to this annotation but don't have much experience with UICRouteAnnotation and was not able to find much documentation on it. Adding "subtitle:" through exceptions.
What am I missing? Why doesn't the subtitle work when doing it like this?

Answer 1

What I didn't realize is that UICRouteAnnotation needed to be modified to accept a subtitle. Here is my updated h and m files for UICRouteAnnotation. Making the below changes fixed my issue so the code I posted in my question works as intended.
Thanks Anna for pointing me in the right direction.
.h file
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
typedef enum UICRouteAnnotationType {
UICRouteAnnotationTypeStart,
UICRouteAnnotationTypeEnd,
UICRouteAnnotationTypeWayPoint,
} UICRouteAnnotationType;
#interface UICRouteAnnotation : NSObject<MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
UICRouteAnnotationType annotationType;
}
#property (nonatomic) CLLocationCoordinate2D coordinate;
#property (nonatomic, readonly, copy) NSString *title;
#property (nonatomic, readonly, copy) NSString *subtitle;
#property (nonatomic) UICRouteAnnotationType annotationType;
- (id)initWithCoordinate:(CLLocationCoordinate2D)coord
title:(NSString *)aTitle
subtitle:(NSString *)aSubTitle
annotationType:(UICRouteAnnotationType)type;
#end
.m file
#import "UICRouteAnnotation.h"
#implementation UICRouteAnnotation
#synthesize coordinate;
#synthesize title;
#synthesize subtitle;
#synthesize annotationType;
- (id)initWithCoordinate:(CLLocationCoordinate2D)coord
title:(NSString *)aTitle
subtitle:(NSString *)aSubTitle
annotationType:(UICRouteAnnotationType)type {
self = [super init];
if (self != nil) {
coordinate = coord;
title = [aTitle retain];
subtitle = [aSubTitle retain];
annotationType = type;
}
return self;
}
- (void)dealloc {
[title release];
[subtitle release];
[super dealloc];
}
#end