在基本适配器中滚动后，TextView 值更改回之前的值

我一直在研究这个问题，但找不到解决方案。关于我的自定义列表视图的所有内容似乎都运行正常。当我点击holder.feedUpVoteButton，文本发生变化+=1正确。但是，当我向下滚动并向上滚动时，文本值将恢复为单击之前的值。

我拒绝使用notifyDatasetChanged因为我没有添加任何内容或从列表中删除任何内容。

public class CustomFeedListViewAdapter extends BaseAdapter{

    CustomFeedListViewAdapter customFeedListViewAdapter;
    Date createdAt, currentDate; int num;
    static HashMap<String, String> oneData = new HashMap<String, String>();
    HashMap<String, String> iFeed = new HashMap<>();


    private String likesString;

    String upVoteClicked, downVoteClicked;
    HashMap<String, String> mFeed = new HashMap<>();
    List<ParseObject>  mObjects;

    private ParseObject parseObFeed;

        CustomFeedListViewAdapter(Context context, ArrayList<HashMap<String, String>> data) {

        super();
        this.mContext = context;
        GlobalFeedTab.arrayFeedList = data;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }


    @Override
    public int getCount() {
        return GlobalFeedTab.arrayFeedList.size();
    }

    @Override
    public Object getItem(int i) {
        return GlobalFeedTab.arrayFeedList.get(i);
    }

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

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {

         likes = new int[GlobalFeedTab.arrayFeedList.size()];
         countryNames = new int[GlobalFeedTab.arrayFeedList.size()];
        dateNames = new String[GlobalFeedTab.arrayFeedList.size()];

       final ViewHolder holder;

        if (view == null) {

            position = i;

            view = inflater.inflate(R.layout.feed_list_row, viewGroup, false);

            holder = new ViewHolder();


            holder.feedNumOfLikes = (TextView) view.findViewById(R.id.feedNumofLikes);
            holder.feedUpVoteButton = (Button) view.findViewById(R.id.feedUpVoteButton);



        } else {
            position = i;
            holder = (ViewHolder) view.getTag();
        }


        mFeed = GlobalFeedTab.arrayFeedList.get(position);

        holder.feedNumOfLikes.setText(mFeed.get("likes"));

        likesString = mFeed.get("likes");
        likes[position] = Integer.valueOf(likesString);

        holder.feedUpVoteButton.setTag(position);

        ParseQuery<ParseObject> query2 = new ParseQuery<ParseObject>("FeedItem");
        query2.setLimit(250);
        query2.addDescendingOrder("createdAt");

        query2.findInBackground(new FindCallback<ParseObject>() {
            @Override
            public void done(final List<ParseObject> objects, ParseException e) {

                if (e == null) {

                    for ( final ParseObject object : objects) {



                        holder.feedUpVoteButton.setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {

                                int pos = (Integer) v.getTag();
                                parseObFeed = objects.get(pos);
                                username = parseObFeed.getString("username");
                                createdAt = parseObFeed.getDate("createdAt");

                                likes[pos] += 1;                           
                                parseObFeed.put("likes", likes[pos]);
                                holder.feedNumOfLikes.setText(String.valueOf(parseObFeed.getInt("likes")));

                                parseObFeed.put(ParseUser.getCurrentUser().getUsername() + "upvoteClicked", true);

                                parseObFeed.saveInBackground();
                            }
                        });                

            }
        });


        return view;
    }


    private class ViewHolder {

        ImageView feedProfilePic;
        TextView feedUsername;
        TextView feedNumOfLikes;
        TextView feedFeedItem;
        TextView feedDate;
        TextView feedNumofReplies;
        Button feedUpVoteButton;
        Button feedDownVoteButton;
        Button feedCommentButton;
        ListView feedListView;

    }

}

实际上这就是整个理论。当您增加一个值时。您必须从获取数据的位置增加列表中的该值。因为当您向下滚动时，上面的行将丢失。当您向后滚动时，列表将从列表值中再次加载。因此您所要做的就是增加列表中的值，即GlobalFeedTab.arrayFeedList this 链接提供更多详细信息，适合任何寻找更多详细信息的人 当你写下这一行时

likes[pos] += 1;

您还必须增加您的 arraylist(mFeed) 中的值，然后编写 notificationDataSetChanged();