How to change the clicked marker icon using android-maps-utils?

Question

In my Android project I am using the android-maps-utils library to apply clustering to a bunch of markers on a map view. Whenever a marker is clicked I get notified via onClusterItemClick so I can do some action.

public interface OnClusterItemClickListener<T extends ClusterItem> {
    public boolean onClusterItemClick(T item);
}

Now I would like to let the user know which marker has been clicked. The easies visual feedback would be to change the (color of the) marker icon. A icon can be set via the MarkerOptions object which can be access within onBeforeClusterItemRendered(T item, MarkerOptions markerOptions) such as here:

markerOptions.icon(
    BitmapDescriptorFactory.defaultMarker(
        BitmapDescriptorFactory.HUE_YELLOW));

If I would have access to the Marker object itself such as in onMarkerClick (Marker marker) I could change the icon via setIcon.

How can I change the clicked marker icon?

---

Related

• How to highlight the selected cluster item?
• Android Google Map V2: How to change previous clicked marker's icon when clicked on another marker

Answer 1

I noticed that the DefaultClusterRenderer provides methods to retrieve the Marker object associated with a ClusterItem. Since I use a custom renderer anyways I was able to access the desired Marker object as shown here:

mSelectedMarker = mCustomClusterItemRenderer.getMarker(mSelectedClusterItem);

This allows me to change the icon within onClusterItemClick():

private void updateSelectedMarker() {
    if (mSelectedMarker != null) {
        mSelectedMarker.setIcon(
                BitmapDescriptorFactory.defaultMarker(
                        BitmapDescriptorFactory.HUE_YELLOW));
    }
}