Data binding in RecyclerView's Adapter and implementing the listener

PlayerStateCallback.kt

interface PlayerStateCallback {
    /**
     * Callback to when the [PlayerView] has fetched the duration of video
     **/
    fun onVideoDurationRetrieved(duration: Long, player: Player)
    
    fun onVideoBuffering(player: Player)
    
    fun onStartedPlaying(player: Player)
    
    fun onFinishedPlaying(player: Player)
}

VideoAdapter.kt

class VideoAdapter : RecyclerView.Adapter<RecyclerView.ViewHolder>(), PlayerStateCallback {

    private val mList = mutableListOf<String>()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        val binding = DataBindingUtil.inflate<ItemVideoBinding>(
            LayoutInflater.from(parent.context), R.layout.item_video, parent, false
        )
        return VideoViewHolder(binding)
    }

    override fun onBindViewHolder(viewHolder: VideoViewHolder, position: Int) {
        val videoUrl = mList[position]
        with(viewHolder.binding) {
            url = videoUrl
            callback = this@VideoAdapter
            executePendingBindings()
        }
    }

    // Setter to set [mList] and notify adapter...
    
    // Overriden methods from PlayerStateCallback interface
    
    class VideoViewHolder constructor(val binding: ItemVideoBinding) : RecyclerView.ViewHolder(binding.root)
}