Simple retrofit2 request to a localhost server

trying to make an android app that will communicate with a localhost server (tomcat apache) which use noSQL server (app->tomcat->noSQL). I already manage to make a servlet that handle params on "get" method and load them correctly to the database, now I am trying to insert the data from my app using retrofit2 lib. following vids and tutorials I still couldnt manage to make this work. this is the interface I am using: ``` public interface APIService { @POST("login") Call<Boolean> postUser(@Body User user); @GET("login") Call<Boolean> getUser(@Query("user_email") String user_email,@Query("user_pass") String user_pass); public static final Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://localhost:8080/") .addConverterFactory(GsonConverterFactory.create()) .build(); } ``` and this is the code I am using when the button is clicked in the app: ``` APIService ApiService = APIService.retrofit.create(APIService.class); User user = new User(name, email); Call<Boolean> call = ApiService.getUser(email,name); call.enqueue(new Callback<Boolean>() { @Override public void onResponse(Call<Boolean> call, Response<Boolean> response) { String ans = response.message(); //for debugging if (ans.compareTo("yes") == 0) { Toast.makeText(getApplicationContext(), "YES!", Toast.LENGTH_SHORT).show(); } else if (ans.compareTo("no") == 0) { Toast.makeText(getApplicationContext(), "NO!", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getApplicationContext(), "ELSE?!", Toast.LENGTH_SHORT).show(); } } @Override public void onFailure(Call<Boolean> call, Throwable t) { Toast.makeText(getApplicationContext(), t.getMessage(), Toast.LENGTH_SHORT).show(); } }); ``` so atm, nothing happen when I am clicking the button.(it used to crush but it stopped) and I am sure the the button's function is being called.