mFirebaseRemoteConfig.fetch(3600).addOnCompleteListener(this, new OnCompleteListener<Void>() {
            @Override
            public void onComplete(@NonNull Task<Void> task) {
                if (task.isSuccessful()) {

                    mFirebaseRemoteConfig.activateFetched();
                    username = mFirebaseRemoteConfig.getString("usernametoken");
                    password = mFirebaseRemoteConfig.getString("passwordtoken");
                    grant_type = mFirebaseRemoteConfig.getString("grant_typetoken");
                    authorizationtoken = mFirebaseRemoteConfig.getString("authorizationtoken");

                    mAuthTask = new GetToken();
                    mAuthTask.execute();

                } else {

                    mFirebaseRemoteConfig.activateFetched();
                    username = "userHapy";//mFirebaseRemoteConfig.getString("usernametoken");
                    password = "123456";//mFirebaseRemoteConfig.getString("passwordtoken");
                    grant_type = "password";//mFirebaseRemoteConfig.getString("grant_typetoken");
                    authorizationtoken = "aXp3OVo0eFMzNzdkWVlJcjNSd0VmeTZvMHZvYTpqSTl5RFk4bWVwem4wNklReEtrYjlxM2dKcFFh";//mFirebaseRemoteConfig.getString("authorizationtoken");

                    mAuthTask = new GetToken();
                    mAuthTask.execute();

                    //Toast.makeText(Login.this, "Hubo un error al conectarnos a internet.",
                            //Toast.LENGTH_LONG).show();

                }

            }
        });