RecyclerView无法从内部对话框中显示

Question

在我的Android应用程序中，我有一个片段打开一个dialogfragment，它本身包含一个recyclerview。我以前有一个listview，但需要水平滚动功能（请注意listview工作）。 getCount（）返回0，并且从未调用onBindViewHolder。因此，当我调用适配器时，我在阶段出现错误，但我不能为我的生活弄清楚它是什么。在此先感谢您的帮助!!!

来自dialogfragment的

片段：

public Dialog onCreateDialog(Bundle savedInstanceState) {


    LayoutInflater li = (LayoutInflater)    getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = li.inflate(R.layout.feed_dialog, null);
    LinearLayoutManager layoutManager
            = new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false);

    imageId = new ArrayList<Integer>();
    imageId.add(R.drawable.sample_bag);
    imageId.add(R.drawable.sample_bag);

    RecyclerView listview = (RecyclerView) view.findViewById(R.id.feed_dialog_listview);
    listview.setLayoutManager(layoutManager);
    FeedImageDialogFragmentList adapter = new FeedImageDialogFragmentList(getActivity(), imageId);
    listview.setAdapter(adapter);
    Dialog dialog = new Dialog(getActivity());
    dialog.setContentView(view);
    dialog.show();
}

我的适配器类：

public class FeedImageDialogFragmentList extends      
        RecyclerView.Adapter<FeedImageDialogFragmentList.ViewHolder>{

    private final Activity context;
    private final ArrayList<Integer> imageId;

    public FeedImageDialogFragmentList(Activity context, ArrayList<Integer> imageId) {
        this.context = context;
        this.imageId = imageId;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(context).inflate(R.layout.list_feed_dialog, null, false);
        return new FeedImageDialogFragmentList.ViewHolder(v);
    }


    @Override
    public void onBindViewHolder(FeedImageDialogFragmentList.ViewHolder holder, final int position) {

        Integer item = imageId.get(position);
        holder.image.setImageBitmap(null);
        holder.image.setImageResource(item);

    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public ImageView image;

        public ViewHolder(View itemView) {
            super(itemView);
            image = (ImageView) itemView.findViewById(R.id.feed_dialog_image);
        }
    }

    @Override
    public int getItemCount() {
        return imageId.size();
    }
}