gastsail

abstract class BaseConcatHolder<T>(itemView: View) : RecyclerView.ViewHolder(itemView) {
    abstract fun bind(adapter: T)
}

gastsail

val animalAdapter = AnimalAdapter(this)
animalAdapter.setAnimals(mutableListOf(Animal("Dog","DogImgUrl"),Animal("Cat","CatImgUrl"),Animal("Hamster","HamsterImgUrl"),Animal("Shark","SharkImgUrl"))
val breedAdapter = DogBreedAdapter(this)
breedAdapter.setBreeds(mutableListOf(Breed("Bulldog"),Breed("Beagle"),Breed("Bulldog"),Breed("Golden retriever"))
//Lets create now the ConcatAdapter with these adapters ready
val concatAdapter = ConcatAdapter(GridConcatAdapter(this,animalAdapter,4),breedAdapter)
animal_rv.layoutManager = LinearLayoutManager(requireContext())
animal_rv.adapter = concatAdapter

gastsail

class BaseGridConcatAdapter(private val context: Context, private val animalAdapter: AnimalAdapter,private val spanCount:Int) :
    RecyclerView.Adapter<BaseConcatHolder<*>>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseConcatHolder<*> {
        val view = LayoutInflater.from(context).inflate(R.layout.animal_concat_row,parent,false)
        view.rv_animal_concat.layoutManager = GridLayoutManager(context, spanCount)
        return ConcatViewHolder(view)
    }

    override fun getItemCount(): Int  = 1

gastsail

 
val animalAdapter = AnimalAdapter(this)
animalAdapter.setAnimals(mutableListOf(Animal("Dog","DogImgUrl"),Animal("Cat","CatImgUrl"),Animal("Hamster","HamsterImgUrl"),Animal("Shark","SharkImgUrl"))
val breedAdapter = DogBreedAdapter(this)
breedAdapter.setBreeds(mutableListOf(Breed("Bulldog"),Breed("Beagle"),Breed("Bulldog"),Breed("Golden retriever"))
//Lets create now the ConcatAdapter with these adapters ready
val concatAdapter = ConcatAdapter(animalAdapter,breedAdapter)
animal_rv.layoutManager = LinearLayoutManager(requireContext())
animal_rv.adapter = concatAdapter

gastsail

class DogBreedAdapter(
    val context: Context,
) : RecyclerView.Adapter<BaseViewHolder<*>>() {

    private var dogBreedList = mutableListOf<Breed>()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<*> {
        return DogBreedViewHolder(
            LayoutInflater.from(context).inflate(R.layout.breeds_row, parent, false)
        )

gastsail

abstract class BaseViewHolder<T>(itemView: View) : RecyclerView.ViewHolder(itemView) {
    abstract fun bind(item: T,position:Int)
}

gastsail

class AnimalAdapter(private val context: Context) :
    RecyclerView.Adapter<BaseViewHolder<*>>() {

    private var animalList = mutableListOf<Animal>()

    companion object {
        const val ITEMS_PER_PAGE = 4
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<*> {

gastsail

sharedViewModel.getCart.observe(viewLifecycleOwner, Observer { cart ->
            navigateToCart(cart)
        })

gastsail

val getCart: LiveData<MutableList<Cart>> = Transformations.switchMap(cartHashMap) {
        liveData(context = viewModelScope.coroutineContext + Dispatchers.IO) {
            emit(it.values.toMutableList())
        }
    }

gastsail

//ViewModel
fun getHashMapData():LiveData<HashMap<String,Cart>>{
        return cartHashMap
    }



//UI that gets this hashmap
sharedViewModel.getHashMapData().observe(viewLifecycleOwner, Observer { dataHashMap ->
            //Here I need to transform this HashMap into a MutableList<Cart>