Android - Create google map projections V2

Question

I embedded a PNG image on the map (version 1) using Overlays:

    ....
    Bitmap map_scaled = Bitmap.createScaledBitmap(map_png, map_png.getWidth(), map_png.getHeight(), true);

....

@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
        super.draw(canvas, mapView, false);
        if(shadow) return;
        Projection projection = mapView.getProjection();

        Point leftTop = new Point();
        Point rightTop = new Point();
        Point rightBottom = new Point();
        Point leftBottom = new Point();

        projection.toPixels(topGeoPoint, leftTop);
        projection.toPixels(new GeoPoint(topGeoPoint.getLatitudeE6(), bottomGeoPoint.getLongitudeE6()), rightTop);
        projection.toPixels(bottomGeoPoint, rightBottom);
        projection.toPixels(new GeoPoint(bottomGeoPoint.getLatitudeE6(), topGeoPoint.getLongitudeE6()), leftBottom);

        if (
                (leftTop.x < 0 || leftTop.y < 0) && 
                (rightTop.x < 0 || rightTop.y < 0) && 
                (rightBottom.x < 0 || rightBottom.y < 0) && 
                (leftBottom.x < 0 || leftBottom.y < 0)) {
            // Not on screen? Don't draw the overlay
            return;
        }

        //      GeoPoint mapCenter = mapView.getMapCenter();
        Paint paint = new Paint();
        paint.setFilterBitmap(true);
        paint.setAntiAlias(true);

        canvas.drawBitmap(original, null, new Rect(leftTop.x, leftTop.y, rightBottom.x, rightBottom.y), paint);


}

I would like to migrate the code to version 2. Do you have any advices? Is there any similar components for do that in Google Map v2?

Best regards

The screenshot. enter image description here

Hi Macie, I uploaded the screenshot. As you can see I would like to put over the map a PNG image, but fixed by the top-left (latitude-longitude) corner and by the bottom-right (latitude-longitude) corner. If I zoom in or zoom out the map, the PNG image should be resized — Ernesto Rodriguez, May 13 '13 at 22:45

score 0 · Answer 1 · answered May 06 '13 at 20:06

Maybe I miss understood, but if you want to add markers to your map, you simple can do it like this:

 private MarkerOptions createMapMarker(LocationWO mLocation) {

    MarkerOptions mMarker = new MarkerOptions()
            .position(
                    new LatLng(mLocation.getmLatitude(), mLocation
                            .getmLongitude()))
            .title(mLocation.getmName())
            .snippet(mLocation.getmName())
            .icon(BitmapDescriptorFactory
                    .fromResource(R.drawable.map_pin_debug));
    return mMarker;
}

Check the official doku https://developers.google.com/maps/documentation/android/marker There are examples for drawing shapes at the map as well, if I didn't get your question right: https://developers.google.com/maps/documentation/android/shapes

Android - Create google map projections V2

1 Answers1