swift - Get LAT and LONG from tapped overlay in Google Maps

Question

When a user taps an overlay, the following code is triggered:

func mapView(_ mapView: GMSMapView, didTap overlay: GMSOverlay) {


    }

I wonder if we can extract the exact LAT and LONG coordinates of the overlay that has been tapped?

Thanks!

Answer 1

To solve this we need the 2 methods together, So I combined them in a way I hope it will help in this issue:

func mapView(_ mapView: GMSMapView, didTap overlay: GMSOverlay) {
    print(overlay)
}

func mapView(_ mapView: GMSMapView, didTapAt coordinate: CLLocationCoordinate2D) {
    print(coordinate)

    for polyline in polylines {
        if GMSGeometryIsLocationOnPath(coordinate, polyline.path!, true) {
            self.mapView(mapView, didTap: polyline)
        }
    }
    for polygon in polygons {
        if GMSGeometryContainsLocation(coordinate, polygon.path!, true) {
            self.mapView(mapView, didTap: polygon)
        }
    }
}

if the user clicked at coordinate we will deal with this, Then check if this coordinate is contained in any Polyline or Polygon we had defined before, So we fire the event didTap overlay for that overlay.

Make sure to make polylines and polygons isTappable = false

And but in mind this event will be fired for every overlay tapped even though if they are overlaped, You can put return when the if success to take the first overlay only