How to draw a shape on the map fragment by touching it using google map V2

Question

Hello everyone,

I am using Google map V2 and I have to draw a shape on the map fragment by touching it. i.e if I rotate my fingers on the map a shape should be generat

Answer 1

I have done it using the map's OnMapClickListener:

private boolean drawing = false;
private Polygon polygon;
private List points = new ArrayList<>();

public class AreasFragment extends mapFragment implements GoogleMap.OnMapClickListener {

  @Override
  public void onMapClick(LatLng point) {
    points.add(point);
    if(!drawing) {
        map.addMarker(new MarkerOptions()
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.flag))
                .anchor(0.2f, 1.0f)
                .position(point));

        PolygonOptions rectOptions = new PolygonOptions()
                .strokeWidth(2)
                .fillColor(0x80000000)
                .add(point);
        polygon = map.addPolygon(rectOptions);
        drawing = true;
    }
    else {
        polygon.setPoints(points);
    }
  }
}