import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
private RadiusMarkerClusterer createPointOfInterestOverlay(List<Overlay> overlays) {
    //10. Marker Clustering
    RadiusMarkerClusterer poiMarkers = new RadiusMarkerClustererWithInfo(this) {
        @Override
        public Marker buildClusterMarker(StaticCluster cluster, MapView mapView) {
            Marker result = super.buildClusterMarker(cluster,mapView);
            if (cluster.getSize() > 0) {
                // show data of the first object in cluster
                result.setRelatedObject(cluster.getItem(0).getRelatedObject());
            }
            return result;
        }
    };

    Drawable clusterIconD = getResources().getDrawable(R.drawable.marker_red_empty);
    poiMarkers.setIcon(((BitmapDrawable) clusterIconD).getBitmap());

    //end of 10.
    //11. Customizing the clusters design
    poiMarkers.getTextPaint().setTextSize(12.0f);
    poiMarkers.mAnchorV = Marker.ANCHOR_BOTTOM;
    poiMarkers.mTextAnchorU = 0.70f;
    poiMarkers.mTextAnchorV = 0.27f;
    //end of 11.
    if (overlays != null) {
        overlays.add(poiMarkers);
    }
    return poiMarkers;
}
 

import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
private void add(Deelgebied key, Marker osmMarker) {
    if (!markers.containsKey(key)){
        markers.put(key, new RadiusMarkerClusterer(Japp.getInstance().getApplicationContext()));
        map.getOSMMap().getOverlays().add(markers.get(key));
    }
    markers.get(key).add(osmMarker);
}
 

import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
public void updateClusterer(RadiusMarkerClusterer newClusterer){
    if (recreate){
        if (navigating){
            updateUIWithRoad(currentRoad);
        }
        recreate = false;
    } else{
        clearInfoWindow();
        clearRoad();
    }
    clearClusterer();
    clusterer = newClusterer;
    addOverlay(newClusterer);
}
 

import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
public RadiusMarkerClusterer buildClustererFromShelters(ArrayList<Shelter> shelters){
    RadiusMarkerClusterer newClusterer = new RadiusMarkerClusterer(activity);

    Log.d(this.toString(), "RadiusMarkerClusterer START = " + System.currentTimeMillis());

    for (Shelter shelter: shelters){
        Marker newMarker = new Marker(map);
        newMarker.setPosition(shelter.getPosition());
        Drawable shelterIcon;

        if (shelter.getDistance() <= 1000){
            shelterIcon = getResources().getDrawable(R.drawable.green_marker);
        }else if (shelter.getDistance() > 1000 && shelter.getDistance() <= 3000){
            shelterIcon = getResources().getDrawable(R.drawable.orange_marker);
        }else if (shelter.getDistance() > 3000 && shelter.getDistance() <= 10000){
            shelterIcon = getResources().getDrawable(R.drawable.pink_marker);
        }else{
            shelterIcon = getResources().getDrawable(R.drawable.red_marker);
        }

        newMarker.setIcon(shelterIcon);
        NavigateInfoWindow infoWindow = new NavigateInfoWindow(map, newMarker);
        HashMap<String, String> properties = shelter.getProperties();

        for (String key:properties.keySet()) {
            infoWindow.addProperty(key, properties.get(key));
        }

        newMarker.setInfoWindow(infoWindow);
        newMarker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM);
        newClusterer.setMaxClusteringZoomLevel(14);
        newClusterer.add(newMarker);

    }

    Drawable clusterIconD = getResources().getDrawable(R.drawable.marker_cluster);
    Bitmap clusterIcon = ((BitmapDrawable)clusterIconD).getBitmap();
    newClusterer.setIcon(clusterIcon);
    newClusterer.setRadius(70);

    Log.d(this.toString(), "RadiusMarkerClusterer END = " + System.currentTimeMillis());

    return newClusterer;
}
 

import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
@Override
protected RadiusMarkerClusterer doInBackground(String... params) {
    try {

        Log.d(this.toString(), "Download time START = " + System.currentTimeMillis());
        DataHolder.jsonStr = JsonReader.readJsonFromUrl(params[0]);
        mShelters = Shelter.parseFromRoot(new JSONObject(DataHolder.jsonStr));
        Log.d(this.toString(), "Download time END = " + System.currentTimeMillis());

        return mapFragment.buildClustererFromShelters(mShelters);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
 

import org.osmdroid.bonuspack.clustering.RadiusMarkerClusterer; //导入依赖的package包/类
@Override
protected void onPostExecute(RadiusMarkerClusterer rmc) {
    dialog.dismiss();
    mapFragment.updateClusterer(rmc);
    mListFragment.setAndUpdateShelters(mShelters);
}