How to detect taps on MKPolylines/Overlays like Maps.app?

Question

When displaying directions on the built-in Maps.app on the iPhone you can \"select\" one of the usually 3 route alternatives that are displayed by tapping on it. I wan\'t to

Answer 1

You can refer my answer may it will help you to find desired solution.

I've added gesture on my MKMapView.

[mapV addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(mapTapped:)]];

This is how i handled my gesture and find out whether the tap is on Overlay view or not.

   - (void)mapTapped:(UITapGestureRecognizer *)recognizer
    {

         MKMapView *mapView = (MKMapView *)recognizer.view;

         CGPoint tapPoint = [recognizer locationInView:mapView];
         NSLog(@"tapPoint = %f,%f",tapPoint.x, tapPoint.y);

         //convert screen CGPoint tapPoint to CLLocationCoordinate2D...
         CLLocationCoordinate2D tapCoordinate = [mapView convertPoint:tapPoint toCoordinateFromView:mapView];

         //convert CLLocationCoordinate2D tapCoordinate to MKMapPoint...
         MKMapPoint point = MKMapPointForCoordinate(tapCoordinate);

         if (mapView.overlays.count > 0 ) {
              for (id overlay in mapView.overlays)
              {

                   if ([overlay isKindOfClass:[MKCircle class]])
                   {
                        MKCircle *circle = overlay;
                        MKCircleRenderer *circleRenderer = (MKCircleRenderer *)[mapView rendererForOverlay:circle];

                        //convert MKMapPoint tapMapPoint to point in renderer's context...
                        CGPoint datpoint = [circleRenderer pointForMapPoint:point];
                        [circleRenderer invalidatePath];


                        if (CGPathContainsPoint(circleRenderer.path, nil, datpoint, false)){

                             NSLog(@"tapped on overlay");
                             break;
                   }

              }

         }

       }
    }

Thanks. This may help you hopefully.