Example of RecyclerView + onScrollListener

ExampleFragment.kt

class ExampleFragment : Fragment() {

    var loading = false

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_example, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val layoutManager = LinearLayoutManager(context)
        recyclerView.layoutManager = layoutManager
        recyclerView.addOnScrollListener(object: RecyclerView.OnScrollListener() {
            override fun onScrolled(recyclerView: RecyclerView?, dx: Int, dy: Int) {
                super.onScrolled(recyclerView, dx, dy)
                val visibleItemCount = layoutManager.childCount
                val totalItemCount = layoutManager.itemCount
                val firstVisible = layoutManager.findFirstVisibleItemPosition()
                if (!loading && (visibleItemCount + firstVisible) >= totalItemCount) {
                    loading = true
                    // Call your API to load more items
                }
            }
        })
    }

}