Click Listener for Info Window Google Maps V2

Question

I have a simple "Place" class:

public class Plac{
    String name;
    int id;
    LatLng latlng;

    public Product(String name, int id, LatLng latlng) {
        this.name = name;
        this.id= id;
        this.latlng = latlng;
    }
}

and I'm adding "Places" to an ArrayList like this: (Note the names are not unique)

ArrayList<Place> places = new ArrayList<Place>();
places.add(new Place("McDonald's", 1));
places.add(new Place("McDonald's", 2));
places.add(new Place("McDonald's", 3));

I'm adding markers to my Google Map like this:

for(Place place : places)
map.addMarker(new MarkerOptions().position(place.latlng).title(place.name);

I want to know how to add a listener for each marker that is being added to the map. I've tried to use

map.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
        @Override
        public void onInfoWindowClick(Marker marker) {

        }
    });

which works, however, the only thing I can do with this is get the title of the marker which is not unique so I can't really find which EXACT "Place" object is being clicked on. Any ideas? Thanks

Answer 1

You could just use the LatLng object returned from calling getPosition() on the Marker to uniquely identify each Marker, and find the match in your places array.

map.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
        @Override
        public void onInfoWindowClick(Marker marker) {

            LatLng latLon = marker.getPosition();

            //Cycle through places array
            for(Place place : places){
               if (latLon.equals(place.latlng)){
                    //match found!  Do something....
               }

            }
        }
    });

Documentation:

https://developer.android.com/reference/com/google/android/gms/maps/model/Marker.html

http://developer.android.com/reference/com/google/android/gms/maps/model/MarkerOptions.html

Answer 2

I suggest using a HashMap.

private HashMap<Marker, Place> markerMap = new HashMap<Marker, Place>();

In your loop:

for(Place place : places){
   MarkerOption marker =new MarkerOptions().position(place.latlng).title(place.name);
   map.addMarker(marker);
   markerMap.put(marker, place)
}

In your Listener:

map.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
        @Override
        public void onInfoWindowClick(Marker marker) {
           Place place = markerMap.get(marker);// here you get your exact Place Object
        }
    });