Start get request in Fragment A and show the data from response in Fragment B - kotlin

Question

trying to add a recyclerview to a fragment is driving me crazy...
I have Fragment A where I use a button to start 2 retrofit request, the first request fetches a token, that is used for the second request. When debugging I can see that the requests work and the needed data is fetched.
Then I have Fragment B, there I want the data from the second request to been shown in a recyclerview.
So first, is this easily handable or should I try to move the call of the second request in the Fragment B? (In that case I would have to pass the values entered in 2 edittext-fields in Fragment A to Fragment B).
To begin slowly I tried to create the recyclerview in Fragment A, having the request and the recyclerview in the same Fragment.
It worked:
class AddStalkerFragment : Fragment(R.layout.fragment_add_stalker) {
private lateinit var binding: FragmentAddStalkerBinding
private lateinit var sessionManager: SessionManager
private lateinit var tvCategoryAdapter: TvCategoryAdapter
val viewModel: StalkerViewModel by lazy {
ViewModelProvider(this)[StalkerViewModel::class.java]
}
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
binding = FragmentAddStalkerBinding.inflate(inflater, container, false)
val view = binding.root
return view
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
prepareRecyclerView()
sessionManager = SessionManager(this#AddStalkerFragment.requireActivity())
val stalkerUrl = binding.etServerUrl.text
val macAddress = binding.etMacAddress.text
val buttonSave = binding.btnSaveStalker
buttonSave.setOnClickListener {
viewModel.getToken(
url = stalkerUrl.toString(),
cookie = "mac=${macAddress};stb_lang=en;timezone=Europe/Amsterdam;",
)
viewModel.getTvCategory(
url = stalkerUrl.toString(),
cookie = "mac=${macAddress};stb_lang=en;timezone=Europe/Amsterdam;",
token = "Bearer ${sessionManager.fetchAuthToken()}"
)
}
viewModel.getTokenLiveData.observe(viewLifecycleOwner) { response ->
if (response == null) {
Toast.makeText(
this#AddStalkerFragment.requireActivity(),
"Token Error",
Toast.LENGTH_SHORT
).show()
return#observe
}
val loginResponse = response.js.token
Toast.makeText(
this#AddStalkerFragment.requireActivity(),
"Token Ok",
Toast.LENGTH_SHORT
).show()
sessionManager.saveAuthToken(loginResponse)
}
viewModel.getTvCategoryLiveData.observe(viewLifecycleOwner) { response ->
if (response == null) {
Toast.makeText(
this#AddStalkerFragment.requireActivity(),
"Categories Error",
Toast.LENGTH_SHORT
).show()
return#observe
}
Toast.makeText(
this#AddStalkerFragment.requireActivity(),
"Categories Ok",
Toast.LENGTH_SHORT
).show()
tvCategoryAdapter.setTvGenresList(response.js)
}
}
private fun prepareRecyclerView() {
tvCategoryAdapter = TvCategoryAdapter()
binding.rvTest.apply {
layoutManager = LinearLayoutManager(context)
adapter = tvCategoryAdapter
}
}
}
And here is what I try in Fragment B to show the recyclerview with the data from Fragment A
Debugging"tvCategoryAdapter.setTvGenresList(response)" doesn't work in Fragment B, so it isn't even getting there :-)
I assume that I have to connect the two Fragments somehow (I did in Navigation Graph, is this enough?)
class TvCategoryFragment : Fragment(R.layout.fragment_tv_category) {
private lateinit var binding: FragmentTvCategoryBinding
private lateinit var tvCategoryAdapter: TvCategoryAdapter
val viewModel: StalkerViewModel by lazy {
ViewModelProvider(this)[StalkerViewModel::class.java]
}
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
binding = FragmentTvCategoryBinding.inflate(inflater, container, false)
val view = binding.root
return view
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
prepareRecyclerView()
viewModel.getTvCategoryLiveData.observe(viewLifecycleOwner) { response ->
if (response == null) {
Toast.makeText(
this#TvCategoryFragment.requireActivity(),
"Categories Error",
Toast.LENGTH_SHORT
).show()
return#observe
}
Toast.makeText(
this#TvCategoryFragment.requireActivity(),
"Categories Ok",
Toast.LENGTH_LONG
).show()
tvCategoryAdapter.setTvGenresList(response.js)
}
}
private fun prepareRecyclerView() {
tvCategoryAdapter = TvCategoryAdapter()
binding.rvLayoutTvCategory.apply {
layoutManager = LinearLayoutManager(context)
adapter = tvCategoryAdapter
}
}
}
My adapter looks like this:
class TvCategoryAdapter : RecyclerView.Adapter<TvCategoryAdapter.ViewHolder>() {
private var genreList = ArrayList<J>()
fun setTvGenresList(genreList: List<J>) {
this.genreList = genreList as ArrayList<J>
notifyDataSetChanged()
}
class ViewHolder(val binding: RvItemTvcategoryBinding) : RecyclerView.ViewHolder(binding.root) {}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
return ViewHolder(
RvItemTvcategoryBinding.inflate(
LayoutInflater.from(
parent.context
)
)
)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.binding.rvItemTvcategory.text = genreList[position].title
}
override fun getItemCount(): Int {
return genreList.size
}
}
Any hint that could help me to solve this? :-)
thanks in advance