HomeFragment.kt

@AndroidEntryPoint
class HomeFragment : Fragment() {
    private lateinit var binding: FragmentHomeBinding
    private val homeViewModel: HomeViewModel by viewModels()
    private lateinit var brandHomeAdapter: BrandsHomeAdapter

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        binding = FragmentHomeBinding.inflate(
            inflater, container, false
        )

        return binding.root
    }

    @ExperimentalCoroutinesApi
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        setupView()
    }

    @ExperimentalCoroutinesApi
    private fun setupView() {
        // Setup brandsAdapter and brandsRv
        brandHomeAdapter = BrandsHomeAdapter({ brand ->
            // navigate to PhonesFragment
        }, { brandSlug, phoneSlug ->
            // navigate to PhoneSpecsFragments
        })

        brandHomeAdapter.addLoadStateListener { loadState ->
            if (loadState.refresh is LoadState.Loading) {
                binding.apply {
                    progressBar.visibility = View.VISIBLE
                    brandsRv.visibility = View.GONE
                }
            } else {
                binding.apply {
                    progressBar.visibility = View.GONE
                    brandsRv.visibility = View.VISIBLE
                }
            }
        }

        binding.brandsRv.apply {
            layoutManager = LinearLayoutManager(context)
            adapter = brandHomeAdapter.withLoadStateFooter(
                footer = FooterAdapter()
            )
            isNestedScrollingEnabled = false
        }

        // Get brands list and show it
        lifecycleScope.launch {
            homeViewModel.getBrandsHome().collect { brands ->
                brandHomeAdapter.submitData(brands)
            }
        }
    }