Dear all,

I am using the Prosys library for quit some time now with great satisfaction. Recently I switched to using LiveData (Android architecture components) to use viewmodels and separate business logic from UI. It appears that if I call the “viewmodel.setVariable()” from within the onDataChange (MonitoredDataItemListener) the viewmodel.setVariable() is called but the change in value is never observed. Some code to explain:

public class OpcUaViewModel extends ViewModel {

private MutableLiveData integratorOutput;

public MutableLiveData getIntegratorOutput() {

if (integratorOutput == null) {
integratorOutput = new MutableLiveData();
setIntegratorOutput(0.0);
}

return integratorOutput;
}

public void setIntegratorOutput(Double d){

integratorOutput.setValue(d);

}

}

This OpcUaViewModel object is declared in OnCreate as

OpcUaViewModel viewModel = ViewModelProviders.of(this).get(OpcUaViewModel.class);

Then in onDataChange(MonitoredDataItem monitoredDataItem, DataValue dataValue, final DataValue dataValue1) the following is called:
viewModel.setIntegratorOutput(dataValue1.getValue().doubleValue());

Hope somebody can point me in the right direction on this!

Carsten