How to draw circle around a pin using Google MAps API v2

Question

I am using the new API(Google Map API V2) for my android application, i have done creating the map and adding markers to it, now my task is to manually create a circle around an

Answer 1

I have been working on this too and I found the following solution. It's still not perfect, because I had to make a very large Canvas to prevent the edge of the circle from becoming blurry.

private void addCircleToMap() {

    // circle settings  
    int radiusM = // your radius in meters
    double latitude = // your center latitude
    double longitude = // your center longitude
    LatLng latLng = new LatLng(latitude,longitude);

    // draw circle
    int d = 500; // diameter 
    Bitmap bm = Bitmap.createBitmap(d, d, Config.ARGB_8888);
    Canvas c = new Canvas(bm);
    Paint p = new Paint();
    p.setColor(getResources().getColor(R.color.green));
    c.drawCircle(d/2, d/2, d/2, p);

    // generate BitmapDescriptor from circle Bitmap
    BitmapDescriptor bmD = BitmapDescriptorFactory.fromBitmap(bm);

// mapView is the GoogleMap
    mapView.addGroundOverlay(new GroundOverlayOptions().
            image(bmD).
            position(latLng,radiusM*2,radiusM*2).
            transparency(0.4f));
}

-- EDIT -- Google updated the API. You can now easily add a circle to your map: https://developers.google.com/maps/documentation/android/shapes?hl=nl#circles