google maps - Android MapView Overlay Image not displaying -

i'm trying write simple mapview using google maps api v1 (targeting gingerbread devices)

just tried following example hello-mapview , works apart image not displayed on map.

there overlay, touch works , displays text, how ever no image appears it.

can spot have missed?

mymapview.java

public class mymapview extends mapactivity {  private mapview mapview;  /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.main);     mapview = (mapview) findviewbyid(r.id.mapview);     mapview.setbuiltinzoomcontrols(true);     list<overlay> mapoverlays = mapview.getoverlays();     drawable drawable = getresources().getdrawable(r.drawable.androidmarker);     newoverlay itemizedoverlay = new newoverlay(drawable, this);     geopoint point = new geopoint(19240000,-99120000);     overlayitem overlayitem = new overlayitem(point, "hola, mundo!", "i'm in mexico city!");     itemizedoverlay.addoverlay(overlayitem);     mapoverlays.add(itemizedoverlay); }  @override protected boolean isroutedisplayed() {     // todo auto-generated method stub     return false; }  } 

newoverlay.java

public class newoverlay extends itemizedoverlay<overlayitem> {  private arraylist<overlayitem> moverlays = new arraylist<overlayitem>(); private context mcontext;  public newoverlay(drawable defaultmarker, context context) {     super(defaultmarker);     mcontext = context; }  @override protected overlayitem createitem(int i) {     return moverlays.get(i); }  @override public int size() {     return moverlays.size(); }  public void addoverlay(overlayitem overlay) {     moverlays.add(overlay);     populate(); }  public void removeoverlays(){     moverlays.clear();     populate(); }  @override protected boolean ontap(int index) {   overlayitem item = moverlays.get(index);   alertdialog.builder dialog = new alertdialog.builder(mcontext);   dialog.settitle(item.gettitle());   dialog.setmessage(item.getsnippet());   dialog.show();   return true; } }