LatLng Points on circle on Google Map V2 in Android

Question

I need to store all the LatLng points of circle drawn on google map. like :

I

Answer 1

The 'zoom' factor is not relevant for the calculations here. Update your makeCircle() method as shown below and it will work exactly the way you want:

private ArrayList<LatLng> makeCircle(LatLng centre, double radius) 
    { 
    ArrayList<LatLng> points = new ArrayList<LatLng>(); 

    double EARTH_RADIUS = 6378100.0; 
    // Convert to radians. 
    double lat = centre.latitude * Math.PI / 180.0; 
    double lon = centre.longitude * Math.PI / 180.0; 

    for (double t = 0; t <= Math.PI * 2; t += 0.3) 
    { 
    // y 
    double latPoint = lat + (radius / EARTH_RADIUS) * Math.sin(t); 
    // x 
    double lonPoint = lon + (radius / EARTH_RADIUS) * Math.cos(t) / Math.cos(lat);

    // saving the location on circle as a LatLng point
    LatLng point =new LatLng(latPoint * 180.0 / Math.PI, lonPoint * 180.0 / Math.PI);

    // here mMap is my GoogleMap object 
    mMap.addMarker(new MarkerOptions().position(point));

    // now here note that same point(lat/lng) is used for marker as well as saved in the ArrayList 
    points.add(point);

    } 

    return points; 
    }

I am sure it helped you :)