iphone pinView.animatesdrop not working - iphone

Question

Here is my code of - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation method. The method is getting called but the pinView.animatesDrop = YES and pinView.canShowCallout = YES is not working. Please help
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:#","];
NSLog(#"pin map");
if(pinView == nil)
{
pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:#""];
pinView.animatesDrop = YES;
pinView.canShowCallout = YES;
UIImage *image = [UIImage imageNamed:#"ann.png"];
CGRect resizeRect;
resizeRect.size = image.size;
CGSize maxSize = CGRectInset(self.view.bounds,
[map annotationPadding],
[map annotationPadding]).size;*/
maxSize.height -= self.navigationController.navigationBar.frame.size.height + [map calloutHeight];
if (resizeRect.size.width > maxSize.width)
resizeRect.size = CGSizeMake(maxSize.width, resizeRect.size.height / resizeRect.size.width * maxSize.width);
if (resizeRect.size.height > maxSize.height)
resizeRect.size = CGSizeMake(resizeRect.size.width / resizeRect.size.height * maxSize.height, maxSize.height);
resizeRect.origin = (CGPoint){0.0f, 0.0f};
UIGraphicsBeginImageContext(resizeRect.size);
[image drawInRect:resizeRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
pinView.image = resizedImage;
pinView.opaque = NO;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton addTarget:self
action:#selector(showDetails:)
forControlEvents:UIControlEventTouchUpInside];
pinView.rightCalloutAccessoryView = rightButton;
if (annotation == mapView.userLocation)
{
return nil;
}
return pinView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}

Answer 1

please see this blog-
here
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation
{
NSLog(#"welcome into the map view annotation");
// if it's the user location, just return nil.
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
// try to dequeue an existing pin view first
static NSString* AnnotationIdentifier = #"AnnotationIdentifier";
MKPinAnnotationView* pinView = [[[MKPinAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease];
pinView.animatesDrop=YES;
pinView.canShowCallout=YES;
pinView.pinColor=MKPinAnnotationColorPurple;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton setTitle:annotation.title forState:UIControlStateNormal];
[rightButton addTarget:self
action:#selector(showDetails:)
forControlEvents:UIControlEventTouchUpInside];
pinView.rightCalloutAccessoryView = rightButton;
UIImageView *profileIconView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"profile.png"]];
pinView.leftCalloutAccessoryView = profileIconView;
[profileIconView release];
return pinView;
}

Answer 2

I worked out what my problem was:
I had not set the delegate for the class.mapView.delegate=self;