在循环开始之前，在顶部显示一个项目

Question

我将所有无限长的滚动视图切换到回收站视图。然而，这使得一些事情变得更加艰难。

这是我的回收者视图的助手类：

namespace BookOfLife.Screens.Helpers
{
    class RecyclerViewHolder : RecyclerView.ViewHolder
    {
        public ImageView imageView { get; set; }
        public TextView txtDescription { get; set; }

        public RecyclerViewHolder(View itemView):base(itemView)
        {
            txtDescription = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_TaskName);
            imageView = itemView.FindViewById<ImageView>(Resource.Id.imageView1);
        }
    }

    class RecyclerViewAdapter : RecyclerView.Adapter
    {
        private List<DataForProfile> lstData = new List<DataForProfile>();

        public RecyclerViewAdapter(List<DataForProfile> lstData)
        {
            this.lstData = lstData;
        } 

        public override int ItemCount
        {
            get
            {
                return lstData.Count;
            }
        }

        public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
        {

            RecyclerViewHolder viewHolder = holder as RecyclerViewHolder;
            viewHolder.txtDescription.Text = (lstData[position].description);
            viewHolder.imageView.SetImageBitmap((lstData[position].img));
        }

        public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
        {
            LayoutInflater inflater = LayoutInflater.From(parent.Context);
            View itemView = inflater.Inflate(Resource.Layout.RecView_Profile, parent, false);
            return new RecyclerViewHolder(itemView);
        }
    }



    public class DataForProfile
    {
        public int imageId { get; set; }
        public Bitmap img { get; set; }
        public string description { get; set; }

    }

问题：

我还需要在回收站视图的顶部显示一个仅显示ONCE的项目。像某种标题。我一直无法弄清楚如何做到这一点。

这是我初始化RC视图的代码：

 private void initRecView()
    {

        RecyclerView recycler;
        RecyclerViewAdapter adapter;
        RecyclerView.LayoutManager layoutManager;


        startNumberOfTask = 0;

        List<KumulosHelper.Objects.Picture> pictures = 
            KumulosHelper.Pictures.getNewestXPhotosFromUserInRange
            (strUsername, "4", startNumberOfTask.ToString(), "0"); // 4 Bilder werden momentan nur reingeladen!


        foreach (var picture in pictures)
        {
            startNumberOfTask++;

            var metrics = Resources.DisplayMetrics;

            lstData.Add(new DataForProfile()
            {
                imageId = startNumberOfTask,
                img = (Bitmap.CreateScaledBitmap
                (KumulosGeneral.DecodePhotoFromBase64(picture.photo),
                metrics.WidthPixels, metrics.WidthPixels, true)),
                description = picture.taskId.ToString()
            });


        }

        recycler = FindViewById<RecyclerView>(Resource.Id.recview);
        recycler.HasFixedSize = true;
        layoutManager = new LinearLayoutManager(this);
        recycler.SetLayoutManager(layoutManager);
        adapter = new RecyclerViewAdapter(lstData);
        recycler.SetAdapter(adapter);

    }

在我的AXML Layoutfile中，我只有一个不断重复的图像的布局。

谢谢！