MKMapView: Get clicked event on annotation pin

Question

Hi,

I am using a m MKMapView containing a couple of MKAnnotation pins. Above the map I am showing a UITable with detailed information of the MKAnnotation pins.

My problem: When i select a pin , i would like to select the corresponding table cell. For this I would like to catch a event/delegate if the pin is selected. I am not talking about calling the callout accessory

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control

Thanks in advance

Answer 1

I haven't seen a simple way to do this in MapKit. There's no mapView:annotationWasTapped: on the delegate.

One way to do it would be to provide your own annotation view subclass. The custom annotation view could capture the pin selection in setSelected:animated: or in a lower level event handler and pass that information up to your view controller.

Answer 2

you can use an Observer for Selected-Event:

[pin addObserver:self
      forKeyPath:@"selected" 
         options:NSKeyValueObservingOptionNew
         context:@"ANSELECTED"];

---

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{

    NSString *action = (NSString*)context;

    if([action isEqualToString:@"ANSELECTED"]){

     BOOL annotationAppeared = [[change valueForKey:@"new"] boolValue];
     if (annotationAppeared) {
      // clicked on an Annotation
     }
     else {
      // Annotation disselected
     }
    }
}