SampleMilitaryIconsMarker.java

package org.osmdroid.samplefragments.data;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;

import org.osmdroid.api.IGeoPoint;
import org.osmdroid.samplefragments.BaseSampleFragment;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.overlay.ItemizedIconOverlay;
import org.osmdroid.views.overlay.ItemizedOverlayWithFocus;
import org.osmdroid.views.overlay.Marker;
import org.osmdroid.views.overlay.OverlayItem;
import org.osmdroid.views.overlay.gestures.RotationGestureOverlay;

import java.util.ArrayList;
import java.util.List;

/**
 * icons generated from https://github.com/missioncommand/mil-sym-java
 * demonstrates one way to show custom icons for a given point on the map
 * (Marker)
 *
 * @author alex
 */
public class SampleMilitaryIconsMarker extends BaseSampleFragment {

	// ===========================================================
     // Constants
     // ===========================================================
     public static final String TITLE = "Military Icons using Markers";

     private static final int MENU_ZOOMIN_ID = Menu.FIRST;
     private static final int MENU_ZOOMOUT_ID = MENU_ZOOMIN_ID + 1;
     private static final int MENU_ADDICONS_ID = MENU_ZOOMOUT_ID + 1;
     private static final int MENU_LAST_ID = MENU_ADDICONS_ID + 1; // Always set to last unused id

	// ===========================================================
     // Fields
     // ===========================================================
     private RotationGestureOverlay mRotationGestureOverlay;
     private OverlayItem overlayItem;
     private List<Drawable> icons = new ArrayList<>(4);

     @Override
     public String getSampleTitle() {
          return TITLE;
     }

	// ===========================================================
     // Constructors
     // ===========================================================

     @Override
     protected void addOverlays() {
          super.addOverlays();

          final Context context = getActivity();


          icons.add(getResources().getDrawable(org.osmdroid.R.drawable.sfgpuci));
          icons.add(getResources().getDrawable(org.osmdroid.R.drawable.shgpuci));
          icons.add(getResources().getDrawable(org.osmdroid.R.drawable.sngpuci));
          icons.add(getResources().getDrawable(org.osmdroid.R.drawable.sugpuci));


          //generates 50 randomized points
          addIcons(50);

          mRotationGestureOverlay = new RotationGestureOverlay(mMapView);
          mRotationGestureOverlay.setEnabled(false);
          mMapView.getOverlays().add(mRotationGestureOverlay);

          // Zoom and center on the focused item.
          mMapView.getController().setZoom(3);

          setHasOptionsMenu(true);
          Toast.makeText(context, "Icon selection and location are random!", Toast.LENGTH_SHORT).show();
     }

	// ===========================================================
     // Getter & Setter
     // ===========================================================
	// ===========================================================
     // Methods from SuperClass/Interfaces
     // ===========================================================
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
          // Put overlay items first
          mMapView.getOverlayManager().onCreateOptionsMenu(menu, MENU_LAST_ID, mMapView);

          menu.add(0, MENU_ZOOMIN_ID, Menu.NONE, "ZoomIn");
          menu.add(0, MENU_ZOOMOUT_ID, Menu.NONE, "ZoomOut");
          menu.add(0, MENU_ZOOMOUT_ID, Menu.NONE, "ZoomOut");
          menu.add(0, MENU_ADDICONS_ID, Menu.NONE, "AddIcons");

          super.onCreateOptionsMenu(menu, inflater);
     }

     @Override
     public void onPrepareOptionsMenu(Menu menu) {
          mMapView.getOverlayManager().onPrepareOptionsMenu(menu, MENU_LAST_ID, mMapView);
          super.onPrepareOptionsMenu(menu);
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
          if (mMapView.getOverlayManager().onOptionsItemSelected(item, MENU_LAST_ID, mMapView)) {
               return true;
          }

          switch (item.getItemId()) {
               case MENU_ZOOMIN_ID:
                    mMapView.getController().zoomIn();
                    return true;

               case MENU_ZOOMOUT_ID:
                    mMapView.getController().zoomOut();
                    return true;
               case MENU_ADDICONS_ID:
                    addIcons(500);
                    return true;
          }
          return false;
     }

     private void addIcons(int count) {
          for (int i = 0; i < count; i++) {
               double random_lon = (Math.random() * 360) - 180;
               double random_lat = (Math.random() * 180) - 90;
               Marker m = new Marker(mMapView);
               m.setPosition(new GeoPoint(random_lat, random_lon));
               int index = (int) (Math.random() * (icons.size()));
               if (index == icons.size()) {
                    index--;
               }
               m.setSnippet("A random point");
               m.setSubDescription("location: " + random_lat + "," + random_lon);
               m.setIcon(icons.get(index));
               mMapView.getOverlayManager().add(m);
          }

          mMapView.invalidate();
          Toast.makeText(getActivity(), count + " icons added! Current size: " + mMapView.getOverlayManager().size(), Toast.LENGTH_SHORT).show();

     }


     @Override
     public void onDestroyView(){
          //itemOverlay.onDetach(mMapView);
          super.onDestroyView();
     }



     // ===========================================================
     // Methods
     // ===========================================================
	// ===========================================================
     // Inner and Anonymous Classes
     // ===========================================================
}