public void doSignup( String username, String password, String email, final LocativeNetworkingCallback callback) { String token = null; try { token = AeSimpleSHA1.SHA1(username + ":" + password + "%" + email); Log.d(Constants.LOG, "Token: " + token); } catch (Exception e) { Log.e(Constants.LOG, "Caught Exception: " + e); } mService.signup( username, password, email, token, new Callback<String>() { @Override public void success(String s, Response response) { Log.d(Constants.LOG, "Signup Success: " + s); callback.onSignupFinished(true, false); } @Override public void failure(RetrofitError error) { Log.d(Constants.LOG, "Signup Error: " + error); callback.onSignupFinished(false, error.getResponse().getStatus() == 409); } }); }