Maps API v2 with different marker actions

Question

I\'m trying to port my application to the new Google Maps API v2, but i\'m having trouble when interacting with markers.

My context: I have a map showing buses and

Answer 1

Ok here is a solution which I decided to use and AFAIK should work for any situation:

private HashMap<String, MyModel> markers= new HashMap<String, MyModel>();


MyModel item = ...
MarkerOptions markerOptions = ...
markers.put(mMap.addMarker(markerOptions).getId(), item);



@Override
public void onInfoWindowClick(Marker marker) {
   MyModel mapItem = (MyModel) markers.get(marker.getId());.
   ...
}

Answer 2

I have run into this problem as well. My solution was:

private Map<Marker, MyModel> markerMap = new HashMap<>();
private GoogleMap mMap;

private void doMarkers(){
    MarkerOptions opt = new MarkerOptions();
    //Fill out opt from MyModel
    Marker marker = mMap.addMarker(opt);
    markerMap.put(marker, myModel);
}

and then in the OnMarkerClickListener callback, pull your model out of the HashMap using the clicked marker. There is also a method Marker.getId() which for some reason returns a string. I don't understand why you can't specify an int id when you make the marker, or why you can't access the marker object before you add it to the map.

UPDATE: After almost 4 years Google have added a method Marker.setTag(Object tag) to associate arbitrary data with a marker.

Answer 3

You can use the HashMarker like that. In this example y charge points in Arraylist and each points cointaints a new ArrayList with coordinates. And the idea is you get de point ID.

Create a HashMap

Markers = new HashMap();

Then you create a Marker and add to the map

final Marker marker = map.addMarker(new MarkerOptions().position(new LatLng(coordinates.get(j).getLat(),coordinates.get(j).getLon())).title(point.getName()));

Then you can save the point id with de marker value

Markers.put(marker, point.getId());

And final you can get the id value when you click the InfoWindow

public void onInfoWindowClick(Marker marker) {

    final long id = Marcadores.get(marker);
    Log.e("Real Marker ID", id+"");
}

OR

When you click the marker

public boolean onMarkerClick(Marker arg0) {

    final long id = Marcadores.get(marker);
    Log.e("Real Marker ID", id+"");
    return false;
}

Answer 4

You can use the marker's getId method