我正在将一些代码从java迁移到kotlin，我不是这两种语言的Maven。
在大多数情况下，我一直在利用AndroidStudio的translate to kotlin功能，然后检查并修复任何bug。
现在我正在迁移一个回收器视图，我有一些java代码如下所示：

Java
    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
        ((VideoPlayerViewHolder)viewHolder).onBind(vods.get(i), requestManager);
    }

我特别关注上面的.onbind（vods.get（i），requestmanager），因为在代码翻译成kotlin之后，我在onbind上遇到了一个未解决的引用错误。

override fun onBindViewHolder(viewHolder: RecyclerView.ViewHolder, i: Int) {
        (viewHolder as VideoPlayerViewHolder).onBind(vods[i], requestManager)
    }

所以我想知道如何解决这个错误。Kotlin似乎没有自动处理。有人能告诉我更多关于这里发生的事情吗。这里是完整的文件也。
谢谢

Java
public class VideoPlayerRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private ArrayList<VOD> vods;
    private RequestManager requestManager;
    public VideoPlayerRecyclerAdapter(ArrayList<VOD> vods, RequestManager requestManager) {
        this.vods = vods;
        this.requestManager = requestManager;
    }
    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        return new VideoPlayerViewHolder(
                LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_video_list_item, viewGroup, false));
    }
    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
        ((VideoPlayerViewHolder)viewHolder).onBind(vods.get(i), requestManager);
    }
    @Override
    public int getItemCount() {
        return vods.size();
    }
}

Kotlin 
abstract class VideoPlayerRecyclerAdapter(
    vods: ArrayList<VOD>,
    requestManager: RequestManager
) :
    RecyclerView.Adapter<RecyclerView.ViewHolder?>() {
    private val vods: ArrayList<VOD>
    private val requestManager: RequestManager
    override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): RecyclerView.ViewHolder {
        return VideoPlayerViewHolder(
            LayoutInflater.from(viewGroup.context)
                .inflate(R.layout.vod_item, viewGroup, false)
        )
    }
    override fun onBindViewHolder(viewHolder: RecyclerView.ViewHolder, i: Int) {
        (viewHolder as VideoPlayerViewHolder).onBind(vods[i], requestManager)
    }
    init {
        this.vods = vods
        this.requestManager = requestManager
    }
}

ViewHolder
public class VideoPlayerViewHolder extends RecyclerView.ViewHolder {
    FrameLayout media_container;
    TextView title;
    ImageView thumbnail, volumeControl;
    ProgressBar progressBar;
    View parent;
    RequestManager requestManager;
    public VideoPlayerViewHolder(@NonNull View itemView) {
        super(itemView);
        parent = itemView;
        media_container = itemView.findViewById(R.id.media_container);
        thumbnail = itemView.findViewById(R.id.thumbnail);
        title = itemView.findViewById(R.id.title);
        progressBar = itemView.findViewById(R.id.progressBar);
    }
    public void onBind(MediaObject mediaObject, RequestManager requestManager) {
        this.requestManager = requestManager;
        parent.setTag(this);
        title.setText(mediaObject.getTitle());
        this.requestManager
                .load(mediaObject.getThumbnail())
                .into(thumbnail);
    }
}