iOS MapKit MKPointAnnotation add Disclosure Button - Not showing pinpoints

Question

On viewload I am looping over some data and adding point points:

    for (id venue in venues) {

        MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
        point.coordinate = coords here;
        point.title = @"title"
        point.subtitle = @"sub";

        [self.map addAnnotation:point];
    }

What I'm trying to do is add a simple disclosure button to the Annotation. I'm using the following:

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {

    MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:@"String"];
    if(!annotationView) {
        annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"String"];
        annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    }

    annotationView.enabled = YES;
    annotationView.canShowCallout = YES;

    return annotationView;
}

However after the view loads, the pinpoints are no longer showing. If I remove the viewForAnnotation everything loads in right, however I of course don't have a disclosure button.

What am I doing wrong here?

Answer 1

If you want to add "PIN" to MapView, you should use MKPinAnnotationView, not MKAnnotationView.

- (MKAnnotationView *)mapView:(MKMapView*)mapView
        viewForAnnotation:(id <MKAnnotation>)annotation
{
  MKPinAnnotationView *annotationView = (MKPinAnnotaionView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"String"];
  if(!annotationView) {
    annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"String"];
    annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
  }
}

disclosure button is showing.