Catch Error: E/Registrar: Exception caught while communicating with master.

[carsonxw]

I've tried overriding onMasterRegisterFailure in onStart() method. It was still not working as expected. App keeps crashes if users connect to Valid IP but failed to connect to Master.

publisher.addListener(new DefaultPublisherListener<std_msgs.String>() {
            @Override
            public void onMasterRegistrationSuccess(Publisher<std_msgs.String> registrant) {
                Log.w("Publisher:", "Publisher succeed to register: " + registrant);
            }
            @Override
            public void onMasterRegistrationFailure(Publisher<std_msgs.String> registrant) {
                Log.w("Publisher:", "Publisher failed to register: " + registrant);
            }
        });