failed to connect to localhost/127.0.0.1 android

I am new to android development, and trying to call local .NET web api service in android via retrofit library. After starting my web api on IIS I am getting this error failed to connect to localhost/127.0.0.1 android. When I did same thing as suggested http://themakeinfo.com/2015/04/retrofit-android-tutorial/, It's working fine, But my localhost service is not calling up from android My service url is, http://localhost:52511/api/Values/getAllStudents/5 and it is giving me output in XML format in browser too. I have also try to call it with, ``` public interface gitapi { @GET("/api/Values/GetProduct/{id}") //here is the other url part.best way is to start using / public void getFeed(@Path("id") int id, Callback<gitmodel> response); } public class gitmodel { public int studentId; public String studentName; public String studentAddress; } String API = "http://10.0.2.2:52511"; public void CallService(View view){ RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint(API).build(); gitapi git = restAdapter.create(gitapi.class); int id = 5; git.getFeed(id, new Callback<gitmodel>() { @Override public void success(gitmodel gitmodel, Response response) { Toast.makeText(getApplicationContext(), "Success", Toast.LENGTH_LONG).show(); } @Override public void failure(RetrofitError error) { Toast.makeText(getApplicationContext(), "Errors", Toast.LENGTH_LONG).show(); } }); } ``` but no luck. Please tell me where do I need to change to make it work. ? Response I am getting in browser is, ``` <ArrayOfstudents xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/APICall.Controllers"> <students> <studentAddress>valsad</studentAddress> <studentId>1</studentId> <studentName>Keval</studentName> </students> <students> <studentAddress>Hyderabad</studentAddress> <studentId>2</studentId> <studentName>Honey</studentName> </students> </ArrayOfstudents> ```