向下滚动回收器数据后变得分散

Question

在回收视图中，我正在通过此查询加载数据，它加载得很好。但是向下滚动后，它变得分散了。

Query query = db.collection(USER_MASTER_KEY)
                .document(Uid)
                .collection("following")
                .document(xpertId)
                .collection("chat_transcript")
                .orderBy(TIMESTAMP_KEY);

这是我的onBind方法。在这里，我同时加载图像，文本，视频。我在聊天机器人应用程序中构建了此回收站。数据的响应先前已加载到firebase中。根据这个问题，ans将被加载。所有的内容都会被加载，但是在出现两个三个视频加载问题之后。

@Override
    public void onBindViewHolder(@NonNull final ChatViewHolder holder, int position) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                .permitAll().build();
        StrictMode.setThreadPolicy(policy);
        final ChatViewData chatViewData1 = chatViewDataList.get(position);
        klog.d("## CHAT ITEM-", new Gson().toJson(chatViewData1));
        String chatData = chatViewData1.getMsgContent();
        // If the message is still pending show placeholder
        if (chatViewData1.MSG_TYPE_PACEHOLDER.equalsIgnoreCase(chatViewData1.getMsgType())) {
            holder.gifImageViewLoading.setVisibility(VISIBLE);
            holder.leftMsgTextView.setVisibility(GONE);
            holder.rightMsgTextView.setVisibility(GONE);
            holder.leftImageView.setVisibility(GONE);
            holder.relativeLayout.setVisibility(GONE);
        }

        // If the message type is blank, show nothing
        if (chatViewData1.getMsgType().equalsIgnoreCase("")) {
            holder.gifImageViewLoading.setVisibility(GONE);
            holder.leftMsgTextView.setVisibility(GONE);
            holder.rightMsgTextView.setVisibility(GONE);
            holder.leftImageView.setVisibility(GONE);
            holder.relativeLayout.setVisibility(GONE);
        }

        // If the message is a received message.
        if (chatViewData1.MSG_TYPE_RECEIVED.equals(chatViewData1.getMsgType())) {
            holder.leftMsgTextView.setText(HtmlCompat.fromHtml(chatData, HtmlCompat.FROM_HTML_MODE_COMPACT), TextView.BufferType.SPANNABLE);
            holder.gifImageViewLoading.setVisibility(GONE);
            holder.leftMsgTextView.setVisibility(VISIBLE);
            //holder.chatLikeOption.setVisibility(VISIBLE);
            //holder.chatDislikeOption.setVisibility(VISIBLE);
            holder.rightMsgTextView.setVisibility(GONE);
            holder.leftImageView.setVisibility(GONE);
            holder.relativeLayout.setVisibility(GONE);
        }
        // If the message is a sent message.
        else if (chatViewData1.MSG_TYPE_SENT.equals(chatViewData1.getMsgType())) {
            holder.rightMsgTextView.setText(HtmlCompat.fromHtml(chatData, HtmlCompat.FROM_HTML_MODE_COMPACT), TextView.BufferType.SPANNABLE);
            holder.gifImageViewLoading.setVisibility(GONE);
            holder.rightMsgTextView.setVisibility(VISIBLE);
            holder.leftMsgTextView.setVisibility(GONE);
            holder.leftImageView.setVisibility(GONE);
            holder.relativeLayout.setVisibility(GONE);
        }
        // If the message is an image message.
        else if (chatViewData1.MSG_TYPE_IMAGE.equals(chatViewData1.getMsgType())) {
            //Load Image using Picasso library
            Picasso.get().load(chatViewData1.getMsgContent()).into(holder.leftImageView);
            holder.gifImageViewLoading.setVisibility(GONE);
            holder.leftImageView.setVisibility(VISIBLE);
            holder.rightMsgTextView.setVisibility(GONE);
            holder.leftMsgTextView.setVisibility(GONE);
            holder.relativeLayout.setVisibility(GONE);
        }
        // If the message is a video message.
        else if (chatViewData1.MSG_TYPE_VIDEO.equals(chatViewData1.getMsgType())) {
            final String videoId = chatViewData1.getMsgContent();
            final ImageView yimageView = holder.YoutubeImageView;

            final String url = "https://img.youtube.com/vi/" + videoId + "/default.jpg";
            BitmapFactory.Options bmOptions;
            bmOptions = new BitmapFactory.Options();
            bmOptions.inSampleSize = 1;
            Bitmap bm = loadBitmap(url, bmOptions);
            yimageView.setVisibility(VISIBLE);
            //holder.videoLikeOption.setVisibility(VISIBLE);
            //holder.videoDislikeOption.setVisibility(VISIBLE);
            yimageView.setImageBitmap(bm);


            yimageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent intent = new Intent("custom-message");
                    //            intent.putExtra("quantity",Integer.parseInt(quantity.getText().toString()));
                    intent.putExtra("startTime", chatViewData1.getStartSeconds());
                    intent.putExtra("endTime", chatViewData1.getEndSeconds());
                    intent.putExtra("videoId", videoId);
                    LocalBroadcastManager.getInstance(mContext).sendBroadcast(intent);
                }
            });

        }
    }

Answer 1

在recycleview的适配器上使用这两种方法

  @Override
public long getItemId(int position) {
    return position;
}

@Override
public int getItemViewType(int position) {
    return position;
}