hafizrahman

fun getSubjects(): LiveData<List<Subject>>? {
        return sroRepository.getSubjects()
    }

fun getReminders(): LiveData<List<Reminder>>? {
        return sroRepository.getReminders()
    }

fun getAllData(): CombinedSubjectReminders? {
        var ldSubjects = getSubjects()

hafizrahman

class SubjectRecyclerViewAdapter(
    val subjects: List<Subject>,
    val reminders: List<Reminder>,
    val listener: OnListFragmentInteractionListener?
) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

hafizrahman

        mainViewModel = ViewModelProvider(activity!!).get(MainViewModel::class.java)

        // New observer
         mainViewModel.getAllData()?.observe(viewLifecycleOwner,
            Observer { subjectsAndRemindersPair ->
                view.sro_subject_list.adapter = SubjectRecyclerViewAdapter(
                    subjectsAndRemindersPair.first,
                    subjectsAndRemindersPair.second,
                    listener)
        })