Can't Update child item in NestedRecyclerView - kotlin

Question

How do I update the child when clicking on the categories item or when doing a search like the one in the picture
I am updating the data from Viewmodel but the child element does not update
I also tried calling the adapter child and updating it directly, but to no avail
This is the code, if you need any additional details, I will add it down
In ParentAdapter
class BaseAdapter(private val listener: OnItemClickListener
): RecyclerView.Adapter<BaseViewHolder>() {
var items : MutableList<HomeItem<Any>> = mutableListOf()
lateinit var adapter : SubjectsAdapter
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
return when (viewType){
VIEW_ITEM_SEARCH ->{
val view = LayoutInflater.from(parent.context).inflate(
R.layout.item_search_view,
parent,false
)
BaseViewHolder.SearchItemViewHolder(view)
}
VIEW_ITEM_STUDENT ->{
val view = LayoutInflater.from(parent.context).inflate(
R.layout.item_student, parent,false
)
BaseViewHolder.StudentItemViewHolder(view)
}
VIEW_ITEM_COLOR ->{
val view = LayoutInflater.from(parent.context).inflate(
R.layout.item_chip_list, parent,false
)
BaseViewHolder.YearsItemViewHolder(view)
}
VIEW_ITEM_SUBJECT ->{
val view = LayoutInflater.from(parent.context).inflate(
R.layout.item_subject_list, parent,false
)
BaseViewHolder.SubjectsItemViewHolder(view)
}
else -> throw Exception("UnKnow View Type")
}
}
override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
when (holder){
is BaseViewHolder.SearchItemViewHolder -> bindSearch(holder,position)
is BaseViewHolder.StudentItemViewHolder -> bindStudent(holder,position)
is BaseViewHolder.YearsItemViewHolder -> bindYears(holder,position)
is BaseViewHolder.SubjectsItemViewHolder -> bindSubjects(holder,position)
}
}
fun bindYears(holder: BaseViewHolder.YearsItemViewHolder,position: Int){
val p = items[position].item as List<SubjectsColor>
val adapterchip = ChipAdapter { chip ->
listener.onSubjectColorClick(chip)
}
holder.binding.apply {
recyclerChipList.layoutManager = LinearLayoutManager(root.context,
LinearLayoutManager.HORIZONTAL,
false)
recyclerChipList.adapter = adapterchip
recyclerChipList.setHasFixedSize(true)
}
adapterchip.submitList(p)
}
fun bindSubjects(holder :BaseViewHolder.SubjectsItemViewHolder,position: Int){
val p = items[position].item as List<SubjectStudent>
adapter = SubjectsAdapter{ subject->
listener.onSubjectStudentClick(subject)
}
holder.binding.apply {
recyclerSubjectList.layoutManager = LinearLayoutManager(root.context,
LinearLayoutManager.VERTICAL,
false)
recyclerSubjectList.adapter = adapter
recyclerSubjectList.setHasFixedSize(true)
}
Log.d("BindSubjects","BindSubjects : $p")
adapter.submitList(p)
}
In ViewModel
#HiltViewModel
class HomeViewModel #Inject constructor(
private val subDao : SubjectsDao,
//state : SavedStateHandle
) : ViewModel(){
private val colorId = MutableLiveData(1)
val colorIdResult = colorId.asFlow().flatMapLatest(){ id ->
id.let {
subDao.getAllSubjectStudentByColor(id)
}
}.stateIn(viewModelScope, SharingStarted.Lazily, null)
fun getAllSubjectsColor() :Flow<List<SubjectsColor>> =
subDao.getAllSubjectColors()
fun onSubjectColorClick(colorI:Int){
colorId.postValue(colorI)
}}
In Fragment
adapterBase = BaseAdapter(this)
val itemsList: MutableList<HomeItem<Any>> = mutableListOf()
itemsList.add(HomeItem("Google Home", HomeItemType.TYPE_SEARCH))
itemsList.add(HomeItem("Student", HomeItemType.TYPE_PROFILE))
viewLifecycleOwner.lifecycleScope.launchWhenStarted {
viewModel.getAllSubjectsColor().collect {
itemsList.add(HomeItem(it, HomeItemType.TYPE_COLORS))
}
}
viewLifecycleOwner.lifecycleScope.launchWhenStarted {
viewModel.colorIdResult.collect { id ->
val result = id ?: return#collect
itemsList.add(HomeItem(result.subjectStudent, HomeItemType.TYPE_SUBJECTS))
//adapterBase.notifyDataSetChanged()
}
}
binding.apply {
recyclerBaseFragment.layoutManager = LinearLayoutManager(requireContext())
recyclerBaseFragment.setHasFixedSize(true)
recyclerBaseFragment.adapter = adapterBase
}
adapterBase.items = itemsList
}
enum class HomeItemType {
TYPE_SEARCH,
TYPE_PROFILE,
TYPE_COLORS,
TYPE_SUBJECTS
}
data class HomeItem<T>(
var item :T,
val type: HomeItemType
)