Customize Google Maps blue dot for current locatio

Question

I'm using a 2013 version of Google Maps SDK for iOS. I would like to customize the default blue dot for current location with another icon or pulsing circles around.

I know we can do that with mapView:viewForAnnotation: in MKMapView, but I can't found out how to do it with Google Maps.

Answer 1

For Swift 4.0

When you setup your GMSMapView:

mapView.isMyLocationEnabled = false

And when user location is updated:

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

    let userLocationMarker = GMSMarker(position: location.coordinate)
    userLocationMarker.icon = UIImage(named: "yourImageName")
    userLocationMarker.map = mapView   
}

Answer 2

Swift 4

class MasterMapViewController: UIViewController, CLLocationManagerDelegate, GMSMapViewDelegate {

    let currentLocationMarker = GMSMarker()

    override func viewDidLoad() {
        super.viewDidLoad()
        addCurrentLocationMarker()
    }

    func addCurrentLocationMarker() {

        let currentLocationMarkerView = UIView()
        currentLocationMarkerView.frame.size = CGSize(width: 40, height: 40)
        currentLocationMarkerView.layer.cornerRadius = 40 / 4
        currentLocationMarkerView.clipsToBounds = true
        let currentLocationMarkerImageView = UIImageView(frame: currentLocationMarkerView.bounds)
        currentLocationMarkerImageView.contentMode = .scaleAspectFill
        currentLocationMarkerImageView.image = UIImage(named: "masterAvatar")
        currentLocationMarkerView.addSubview(currentLocationMarkerImageView)
        currentLocationMarker.iconView = currentLocationMarkerView
        currentLocationMarker.isTappable = false
        currentLocationMarker.map = mapView

    }

    // location manager delegate
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        let lastLocation = locations.last!
        currentLocationMarker.position =  lastLocation.coordinate    
    }

}

Use this only as a starting point! This is not an attractive alternative because the constant updating of the marker's position on the map comes with a performance hit. If you were to go this route, find a way not to constantly update the marker's position from the location manager delegate.

Answer 3

There is no way to do this with current version of the SDK (1.4.3), and actually there is an open issue with this request: Look here.

As a work around, you can hide the default button with:

 _map.myLocationEnabled = NO;

Then create a custom GMSMarker

 GMSMarker *pointMarker = [GMSMarker markerWithPosition:currentPosition];
 pointMarker.icon = [UIImage imageNamed:@"YourImage"];
 pointMarker.map = _map;

And change the position of it using a CLLocationManager, so it always show the current position. It's a bit tricky but is the only way, I could think, that you can achieve this. If you need a more complete example let me know.