samiuelson

class LiveStreamActivity : AppCompatActivity(R.layout.activity_main) {
    private val adapter = MessagesListAdapter()

    private val messageListSmoothScroller by lazy {
        object : LinearSmoothScroller(this) {
            val MILLISECONDS_PER_INCH = 400f

            override fun calculateSpeedPerPixel(displayMetrics: DisplayMetrics?): Float {
                return MILLISECONDS_PER_INCH / displayMetrics!!.densityDpi
            }

samiuelson

    private fun updateMessagesList(messages: List<Message>) {
        adapter.submitList(messages)
        adapter.notifyDataSetChanged()
        val scrollTarget = adapter.itemCount
        messageListSmoothScroller.targetPosition = scrollTarget
        messagesList.layoutManager?.startSmoothScroll(messageListSmoothScroller)
    }

samiuelson

class ChannelFragment : Fragment() {
  //...
  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        binding.messageListView.setMessageViewHolderFactory(MyCustomMessageViewHolderFactory())
  }
}