Question

我在数组列表中有一个json数组，我需要将一个对象显示为count，将一个对象显示为文本视图，而要过滤该对象时，我无法找到count视图和显示视图，我在搜索哈希图，但是不起作用，我的问题是我可以在一个recyclerview适配器中添加两个数组列表，一个用于视图，一个用于在同一视图中计数。编辑：经过研究后，我知道如果ID与ID匹配，我需要隐藏对象，但是在recyclerview中，我找不到根据条件显示和隐藏内容的解决方案？

@Override
public void onBindViewHolder(@NonNull DiscussingAdapter.DiscussionView holder, int position) {
    HashMap<String, List<Result>> hashMap = new HashMap<String, List<Result>>();
    Result result = discussionsList.get(position);
    //discussionsList.get(position);

    List<Result> filterList = discussionsList.stream()
            .filter(p -> p.getParentCommentID()==null).collect(Collectors.toList());
    Log.d("filterList",filterList.toString());
    for (int counter = 0; counter < filterList.size(); counter++) {
        holder.tvHeader.setText(filterList.get(counter).getTitle());
        holder.tvDetail.setText(Utils.html2text(filterList.get(counter).getComment()));
        holder.tvViewReply.setText("Reply");
        holder.tvUser.setText("By " + filterList.get(counter).getAuthor().getTitle());
        String DateofReceipt = filterList.get(counter).getCreated();
        String date = DateofReceipt.split("T", 0)[0];
        String date_before = date;
        String date_after = Utils.date(date_before);
        holder.tvDate.setText(date_after);
    }

    Map<String, Integer> commentsCountMap = new HashMap<>();
    for(Result res : discussionsList) {
        String parentCommentId = res.getParentCommentID();
        // If the Result has a parent comment
        if(parentCommentId != null) {
            // get the count for this parent comment (default to 0)
            int nbCommentsForParent = commentsCountMap.getOrDefault(parentCommentId, 0);
            // increment the count
            nbCommentsForParent++;
            // Update the Map with the new count
            commentsCountMap.put(parentCommentId, nbCommentsForParent);


        }
    }

    for(Map.Entry<String,Integer> cCount : commentsCountMap.entrySet()){

        holder.tvViewReply.setText(String .valueOf(cCount.getValue())+" Reply");



    }}

生成的Json对象如下

      {
      "d": {
"results": [
  {
    "__metadata": {
      "id": "e7433825-6771-4f5e-96c7-c4d2674d7764",
      "uri": "",
      "etag": "\"2\"",
      "type": "SP.Data.InquiryDiscussionsListListItem"
    },
    "Author": {
      "__metadata": {
        "id": "f064775c-6161-4bdb-9f4d-8bc6a898d218",
        "type": "SP.Data.UserInfoItem"
      },
      "Title": "Submitter1"
    },
    "Id": 1501,
    "ID": 1501,
    "Title": null,
    "Created": "2019-06-06T04:15:17Z",
    "ParentCommentID": "1439",
    "Comment": "<div class=\"ExternalClass8C333A77B6564A53BED74CA1BA2D2A10\">
    reply add for 009</div>",
    "CommentType": null,
    "CommentDocumentName": null,
    "AppID": "1083",
    "Role": "Customer"
  },
  {
    "__metadata": {
      "id": "e92f708f-93dc-4587-8c4f-5518ed24f360",
      "uri": "",
      "etag": "\"2\"",
      "type": "SP.Data.InquiryDiscussionsListListItem"
    },
    "Author": {
      "__metadata": {
        "id": "209d2d9a-bb07-4064-aaa0-231ad881a80f",
        "type": "SP.Data.UserInfoItem"
      },
      "Title": "Submitter1"
    },
    "Id": 1500,
    "ID": 1500,
    "Title": null,
    "Created": "2019-06-06T04:14:55Z",
    "ParentCommentID": "1439",
    "Comment": "<div class=\"ExternalClass44B1A0BB4D314C57BEE20141BFF10491\">comment add for       009</div>",
    "CommentType": null,
    "CommentDocumentName": null,
    "AppID": "1083",
    "Role": "Customer"
  },
  {
    "__metadata": {
      "id": "ec112002-3132-4bc1-8f85-03fbd9fda11d",
      "uri": "",
      "etag": "\"2\"",
      "type": "SP.Data.InquiryDiscussionsListListItem"
    },
    "Author": {
      "__metadata": {
        "id": "6e8ecb1d-4deb-4168-a8b4-a725abf8002a",
        "type": "SP.Data.UserInfoItem"
      },
      "Title": "Sarada Devi Potti"
    },
    "Id": 1439,
    "ID": 1439,
    "Title": "Canceled",
    "Created": "2019-06-03T09:32:34Z",
    "ParentCommentID": null,
    "Comment": "<div  class=\"ExternalClass5E1BFEDC348C43719AD940E644E0E0B6\">sdaeadfasdf</div>",
    "CommentType": "Public",
    "CommentDocumentName": null,
    "AppID": "1083",
    "Role": "Budget Analyst"
    }
   ]
   }
    }

在“以上Json响应”中，如果object为Comment，我想显示内容，但如果是回复，则需要基于id匹配任何解决方案来显示计数？

Answer 1

您可以通过简单的方法先将两个列表都传递给适配器然后返回总大小

  @Override
public int getItemCount() {
    return mList.size() + mList1.size();
}

例如，现在onBindViewHolder现在要先显示mList

  @Override
public void onBindViewHolder(@NonNull DiscussingAdapter.DiscussionView holder, int position) {
if(position < mList.size()){
// Load the data from mList 
holder.tvName.setText(mList.get(position).getName())
}else{
//For getting Data from secondList
holder.tvName.setText(mList1.get(position-mList.getSize()).getName())
// Now you will get data from second List

}
}

Answer 2

我不确定我是否完全了解您。但是，我认为您可以创建一个模型类，并在其中保留两个变量。

public class Demo {
    private int count;
    private int value;

    public Demo(int count, int value) {
        this.count = count;
        this.value = value;
    }
}

然后，您可以创建该模型类的ArrayList并将其传递给RecyclerView适配器。

ArrayList<Demo> demos = new ArrayList<>();
Demo firstObject = new Demo(1, 10);
demos.add(firstObject);
Demo secondObject = new Demo(2, 11);
demos.add(secondObject);
Demo thirdObject = new Demo(3, 12);
demos.add(thirdObject);

请随时询问我是否不清楚或其他任何内容。

如何根据条件在recyclerview中隐藏josn对象？

2 个答案: