Camera2 -- Focus Distance

[Aswinwin7]

can someone help me on how to get the LENS_FOCUS_DISTANCE in CONTROL_AF_MODE_AUTO ? I have tried the below code but the focusValue is always 0.0 in AUTO MODE

final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
@override
public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
super.onCaptureCompleted(session, request, result);
createCameraPreview();

focusValue = result.get(CaptureResult.LENS_FOCUS_DISTANCE);
}