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How to find which annotation to send showDetails?

How to find which annotation to send showDetails?

MKPinAnnotationView* customPinView = [[[MKPinAnnotationView alloc]
                                             initWithAnnotation:annotation reuseIdentifier:BridgeAnnotationIdentifier] autorelease];
            customPinView.pinColor = MKPinAnnotationColorPurple;
            customPinView.animatesDrop = YES;
            customPinView.canShowCallout = YES;

            // add a detail disclosure button to the callout which will open a new view controller page
            //
            // note: you can assign a specific call out accessory view, or as MKMapViewDelegate you can implement:
            //  - (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control;
            //
            UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
            [rightButton addTarget:self
                            action:@selector(showDetails:)
                  forControlEvents:UIControlEventTouchUpInside];
            customPinView.rightCalloutAccessoryView = rightButton;

            return customPinView;

- (void)showDetails:(id)sender
{
  some code
}
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1 answer

Comments in your code have an answer. Instead of using a custom method and calling addTarget, use the calloutAccessoryControlTapped method to display. In this method, you will get an annotation link containing an annotation link.

Remove the addTarget call and replace the showDetails method as follows:

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view 
    calloutAccessoryControlTapped:(UIControl *)control
{
    MyAnnotationClass *annot = (MyAnnotationClass *)view.annotation;
    //do something...
}
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