I am triyng to add multiple marker on google map. Here is my code section
public class GoogleMap extends MapView
{
MapController mc;
MapView mapView;
GeoPoint p;
@Override
public void onCreate(Bundle savedInstanceState)
{
....
double lat = Double.parseDouble(bundle.getString("paramLat"));
double lng = Double.parseDouble(bundle.getString("paramLong"));
mc = mapView.getController();
p = new GeoPoint( (int) (lat * 1E6), (int) (lng * 1E6));
mc.animateTo(p);
mc.setZoom(17);
//---Add a location marker---
MapOverlay mapOverlay = new MapOverlay();
List<Overlay> listOfOverlays = mapView.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverlay);
mapView.invalidate();
}
class MapOverlay extends com.google.android.maps.Overlay
{
@Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when)
{
super.draw(canvas, mapView, shadow);
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(p, screenPts);
//---add the marker---
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.pushpin);
canvas.drawBitmap(bmp, screenPts.x, screenPts.y-50, null);
return true;
}
}
I have two question here. When i tried to add only one marker, it works but draw method is invoked many times. But why? and when is it invoked?
The second question is how can i add new marker. I created second geoPoint named p2 and after that what should i do? Thank you very much.
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