private void FillSimpleView(RecyclerView.ViewHolder vh, User user)
            {
                NormalViewHolder normalViewHolder = (NormalViewHolder)vh.JavaCast<NormalViewHolder>(); ;
                SwipeMenuLayout itemView = (SwipeMenuLayout)normalViewHolder.ItemView.JavaCast<SwipeMenuLayout>();
                itemView.Click += delegate { Toast.MakeText(mContext, "Hi " + user.userName, ToastLength.Short).Show(); };
                normalViewHolder.btGood.Click += delegate
                {
                    Toast.MakeText(normalViewHolder.ItemView.Context, "Good ", ToastLength.Short).Show();
                };
                normalViewHolder.btOpen.Click += delegate
                {
                    Toast.MakeText(mContext, "Open " + user.userName, ToastLength.Short).Show();
                };
                normalViewHolder.btDelete.Click += delegate
                {
                    try
                    {
                
                        users.RemoveAt(vh.AdapterPosition);
                        mAdapter.NotifyItemRemoved(vh.AdapterPosition);
                    }
                    catch
                    {
                        //有的时候会执行多次点击事件导致报错
                    }

                };
                normalViewHolder.tvName.Text = user.userName;
            }