OSMItemizedIconOverlay.java

package com.spatialdev.osm.marker;

import android.content.Context;

import com.mapbox.mapboxsdk.overlay.ItemizedIconOverlay;
import com.mapbox.mapboxsdk.overlay.Marker;
import com.spatialdev.osm.model.OSMNode;
import com.spatialdev.osm.renderer.OSMOverlay;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;

/**
 * OSMItemizedIconOverlay is an extension of ItemizedIconOverlay.
 * Instead of having an internal list of markers as we do in
 * standard IconOverlays, we have a reference to the varying list
 * of markers set from a QuadTree in OSMOverlay#draw.
 */
public class OSMItemizedIconOverlay extends ItemizedIconOverlay {

    List<OSMNode> viewPortNodes;

    public OSMItemizedIconOverlay(OSMOverlay osmOverlay, Context pContext, List<Marker> pList, OnItemGestureListener<Marker> pOnItemGestureListener) {
        super(pContext, pList, pOnItemGestureListener);
        viewPortNodes = osmOverlay.getViewPortNodes();
    }

    @Override
    protected void populate() {
        // no op
    }

    @Override
    public Marker getItem(final int position) {
        return viewPortNodes.get(position).getMarker();
    }

    @Override
    public int size() {
        return viewPortNodes.size();
    }

    /**
     * Sorts List of Marker by Latitude
     */
    protected void sortListByLatitude() {
        Collections.sort(viewPortNodes, new Comparator<OSMNode>() {
            public int compare(OSMNode a, OSMNode b) {
                return Double.valueOf(a.getLat()).compareTo(b.getLat());
            }
        });
    }
}