Android Uber SDK Ride Estimate Returns Null Value

I have been integrating Uber SDK with My Application and i am trying to get uber ride estimate with following code,

RidesService service = UberRidesApi.with(session).build().createService();
Response response = service.getProducts((float) currentLatLng.latitude, (float) currentLatLng.longitude).execute();
List products = response.body().getProducts();
rideDetails.setProducts((ArrayList) products);
if (products != null && products.size() > 0) {
for (int i = 0; i < products.size(); i++) {
Product product = products.get(i);
String productId = product.getProductId();
RideRequestParameters rideRequestParameters = new RideRequestParameters.Builder().setPickupCoordinates((float) currentLatLng.latitude, (float) currentLatLng.longitude)
.setProductId(productId)
.setDropoffCoordinates((float) mDestinationLatitude, (float) mDestinationLongitude)
.build();
RideEstimate rideEstimate = service.estimateRide(rideRequestParameters).execute().body();
}

            }

with this lines of code i am able to get the RideEstimate data's if the Native UBER app is not available but if its available i am getting the RideEstimate data as NULL. Please let me know if you could hel me in this.Thanks in advance.

Start by reproducing the RideEstimate request through RidesService with the native Uber app both unavailable and available. Compare the response from estimateRide in those two cases, including the ProductsResponse and RideEstimate calls shown in the issue. Done means identifying why the available-app case returns null and documenting or correcting that behavior.