rightCalloutAccessoryView on MKMapView not show - iphone

Question

I have little problem with my iphone application. I have such classes and interfaces:
CinemaMapAnnotation.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface CinemaMapAnnotation : NSObject <MKAnnotation>{
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
}
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, copy) NSString* title;
#property (nonatomic, copy) NSString* subtitle;
-(id)initWithCoordinate:(CLLocationCoordinate2D) c;
#end
CinemaMapAnnotation.m
#import "CinemaMapAnnotation.h"
#implementation CinemaMapAnnotation
#synthesize title, subtitle, coordinate;
-(id)initWithCoordinate:(CLLocationCoordinate2D) c{
self = [super init];
if (self) {
coordinate = c;
}
return self;
}
-(void) dealloc {
self.title = nil;
self.subtitle = nil;
[super dealloc];
}
#end
CinemasMapController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import "Cinema.h"
#import "CinemaMapAnnotation.h"
#import "PopcornuaAppDelegate.h"
#interface CinemasMapController : UIViewController <MKMapViewDelegate, MKReverseGeocoderDelegate> {
MKMapView *mapView;
MKReverseGeocoder *reverseGeokoder;
}
#property (nonatomic, retain) IBOutlet MKMapView *mapView;
#property (nonatomic, retain) IBOutlet MKReverseGeocoder *reverseGeokoder;
#end
CinemasMapController.m
#import "CinemasMapController.h"
#implementation CinemasMapController
#synthesize mapView, reverseGeokoder;
...
#pragma mark - Map Anotation
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id)annotation
{
static NSString* MyIdentifier = #"CinemaMapAnotation";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:MyIdentifier];
if (!pinView)
{
MKPinAnnotationView* pinView = [[[MKPinAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:MyIdentifier] autorelease];
pinView.draggable = NO;
pinView.animatesDrop = NO;
pinView.enabled = YES;
} else {
pinView.annotation = annotation;
}
if(annotation != mapView.userLocation){
pinView.pinColor = MKPinAnnotationColorRed;
pinView.canShowCallout = YES;
// Add a detail disclosure button to the callout.
pinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
pinView.userInteractionEnabled = YES;
} else {
pinView.pinColor = MKPinAnnotationColorGreen;
}
return pinView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control {
NSLog(#"Not show button, so not work");
}
...
#end
My problem is, what all show and work, except not show rightCalloutAccessoryView button. mapView connected and have delegete to CinemasMapController on iphone view (also I try [mapView setDelegate:self]). So what I do wrong?
P.S. Code with line
pinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
execute - checked by NSLog.
Here how its look like - no button:

Answer 1

In viewForAnnotation, in the if (!pinView) block, a new local pinView variable is being declared instead of getting assigned to the outer variable.
As a result, the outer pinView variable never gets set (stays nil) and so the map view creates the default annotation view which is what you see.