Question

Hi I’m using google android maps v2 and adding a bunch of markers to the map however I need to add additional data to the marker objects for recall later in the onInfoWindowClick function.

I currently have a MarkerManager singleton class which maintains a concurrent list of venues however inside the onInfoWindowClick function I need to recall this via some form of key from the MarkerManager.

It appears that markers are static final and can’t be extended so I’m a bit stuck on how to do this.

thanks,

Andy

Answer 1

You can create a HashMap:

 Map<Marker, YourCustomObject> theMap;

Then add the markers as keys:

Marker m = mMap.addMarker(new MarkerOptions().icon(BitmapDescriptorFactory.fromResource(R.drawable.whatever)).position(new LatLng(mLat, mLong)));
theMap.put(m, yourCustomObjectInstance);

Finally in your Info Window provider, you can retrieve your object via the marker supplied to the getInfoWindow function`:

mMap.setInfoWindowAdapter(new InfoWindowAdapter() {
    @Override
    public View getInfoWindow(Marker marker) {
        YourCustomObject yourCustomObjectInstance = theMap.get(marker);
    }