Android googlemaps clustering how to exclude one marker

Question

Is there a way to exclude one selected marker from the clustering?

this is my renderer class

private class StoreRenderer extends DefaultClusterRenderer<Store> {
    HashMap<Store, Marker> storeMarkerMap = new HashMap<Store, Marker>();
    public StoreRenderer(Context context, GoogleMap map, ClusterManager<Store> clusterManager) {
        super(context, map, clusterManager);
    }

    public Marker getMarkerFromStore(Store clusterItem) {
        return storeMarkerMap.get(clusterItem);
    }

    public void removeMarkerFromStore(Store itemToRemove) {
        storeMarkerMap.remove(itemToRemove);
    }


    @Override
    protected void onBeforeClusterItemRendered(Store item, MarkerOptions markerOptions) {
        super.onBeforeClusterItemRendered(item, markerOptions);
        markerOptions.icon(BitmapDescriptorFactory.fromResource(item.getMainCategoryResourceImage()));
    }

    @Override
    protected void onClusterItemRendered(Store clusterItem, Marker marker) {
        super.onClusterItemRendered(clusterItem, marker);
        storeMarkerMap.put(clusterItem, marker);
    }
    @Override
    protected boolean shouldRenderAsCluster(Cluster cluster) {
        return cluster.getSize() > 3;
    }

    public HashMap<Store, Marker> getStoreMarkerMap() {
        return storeMarkerMap;
    }
}

and i'm adding all the stores like this

ClusterManager<Store> mClusterManager = new ClusterManager<Store>(getContext(), map);
StoreRenderer renderer = new StoreRenderer(getContext(), my_map, mClusterManager);
mClusterManager.setRenderer(renderer);
.....
mClusterManager.addItem(temp);

mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<Store>() {
        @Override
        public boolean onClusterItemClick(Store storeClusterItem) {
            markerClicked(storeClusterItem);
            return true;
        }
    });

how can I exclude the clicked marker from the clustering?

score 0 · Answer 1 · edited May 23 '17 at 11:44

There can be a lot of workaround regarding removing an item in cluster.

Use GridBasedAlgorithm as it support elements remove.

In this SO question, the community provided some workaround like GridBasedAlgorithm and some own code implementation for removing a marker in cluster.

Directly adding markers to maps(for those markers you don't want to include in clusters.)

I hope this clear up some things. :)

score 0 · Answer 2 · answered Aug 10 '20 at 13:52

Here is my solution that I used.

clusterManager = ClusterManager(requireContext(), myMap, object : MarkerManager(myMap) {
            override fun onMarkerClick(marker: Marker): Boolean {
                val result = super.onMarkerClick(marker)
                return if (result) true // cluster marker clicked
                else {
                    //other marker click handled
                    true
                }
            }
        })
    
        clusterManager?.let { clsManager ->
            clsManager.setOnClusterItemClickListener { marker ->
                //marker in cluster clicked
                return@setOnClusterItemClickListener true //super.onMarkerClick(marker) returned true
            }   
            myMap.setOnMarkerClickListener(clsManager)
        }

Android googlemaps clustering how to exclude one marker

2 Answers2