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

Google made is simple in maps v2. The snippet below demonstrates both drawing markers and circles along with updating their positions together.

private Circle mCircle;
private Marker mMarker;
private GoogleMap mGoogleMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mGoogleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.mapFragment)).getMap();
    mGoogleMap.setMyLocationEnabled(true);
    mGoogleMap.setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() {
        @Override
        public void onMyLocationChange(Location location) {
            LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
            if(mCircle == null || mMarker == null){
                drawMarkerWithCircle(latLng);
            }else{
                updateMarkerWithCircle(latLng);
            }
        }
    });
}

private void updateMarkerWithCircle(LatLng position) {
    mCircle.setCenter(position);
    mMarker.setPosition(position);
}

private void drawMarkerWithCircle(LatLng position){
    double radiusInMeters = 100.0;
    int strokeColor = 0xffff0000; //red outline
    int shadeColor = 0x44ff0000; //opaque red fill

    CircleOptions circleOptions = new CircleOptions().center(position).radius(radiusInMeters).fillColor(shadeColor).strokeColor(strokeColor).strokeWidth(8);
    mCircle = mGoogleMap.addCircle(circleOptions);

    MarkerOptions markerOptions = new MarkerOptions().position(position);
    mMarker = mGoogleMap.addMarker(markerOptions);
}