android - Recyclerview 项目在刷新时混淆

Question

Possible Duplicate RecyclerView Mixing Up Items

我有一个 Recyclerview，我通过适配器和列表填充项目。问题是，在刷新时(通过 SwipeRefreshLayout)，倒数计时器的数据混淆了，错误的值显示在另一个项目上，如下图突出显示。项目 1 突出显示的计时器应该显示“已过期”，但在刷新时它采用项目 2 的计时器值

这是我的适配器中的 onBindViewHolder 代码。我是否正确执行了它？

public class FeedAdapter extends RecyclerView.Adapter<FeedAdapter.FeedModelViewHolder> {
private List<FeedModel> feedModelList;
private MainFeedListener listener;
private Context mContext;
String cPrice;

public FeedAdapter(List<FeedModel>feedModelList, Context context, MainFeedListener bidFeedListener) {
    this.feedModelList = feedModelList;
    this.mContext = context;
    this.listener = bidFeedListener;
}

@NonNull
@Override
public FeedModelViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_bid_feed, parent, false);
    return new FeedModelViewHolder(v);
}
@Override
public void onBindViewHolder(@NonNull final FeedModelViewHolder holder, final int position) {
    final FeedModel feedModel = feedModelList.get(position);
    ((TextView) holder.bidView.findViewById(R.id.bid_title)).setText(feedModel.getTitle());
    ((TextView) holder.bidView.findViewById(R.id.start_price)).setText(feedModel.getCurrency() +" "+Convert(feedModel.getStartPrice()));
    ((TextView) holder.bidView.findViewById(R.id.tags)).setText(feedModel.getTags());
    ((TextView) holder.bidView.findViewById(R.id.location)).setText(feedModel.getLocation());


    new CountDownTimer(feedModel.getDeadline(), 1000) {
        public void onTick(long millisUntilFinished) {
            ((TextView) holder.bidView.findViewById(R.id.deadline)).setText(formatMilliSecondsToTime( millisUntilFinished));
            feedModel.setTime(millisUntilFinished);
        }
        public void onFinish() {
            ((TextView) holder.bidView.findViewById(R.id.deadline)).setText("EXPIRED");
        }

    }.start();

    if (!TextUtils.isEmpty(feedModel.getImageUrl())) {
        Glide.with(mContext).load(feedModel.getImageUrl())
                .thumbnail(0.5f)
                .crossFade()
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .into((ImageView) holder.bidView.findViewById(R.id.bid_thumbnail));
     }
    ((LinearLayout) holder.bidView.findViewById(R.id.article_card_root)).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
           listener.onBidRowClicked(feedModel);
        }
    });
}


@Override
public int getItemCount() {
    return feedModelList.size();
}

public static class FeedModelViewHolder extends RecyclerView.ViewHolder {
    private View bidView;
    public FeedModelViewHolder(View v) {
        super(v);
        bidView = v;
    }
}


String Convert(Double d){
    int i;
    d +=0.005;
    i= (int) (d*100);
    Double b = (double) (i / 100);
    return b.toString();
}    

public static  String formatMilliSecondsToTime(long milliseconds) {

    int seconds = (int) (milliseconds / 1000) % 60;
    int minutes = (int) ((milliseconds / (1000 * 60)) % 60);
    int hours = (int) ((milliseconds / (1000 * 60 * 60))); //
  //  int days = (int) ((milliseconds / (1000 * 60 * 60)) % 24); //
    return twoDigitString(hours) + ":" + twoDigitString(minutes) + ":"
            + twoDigitString(seconds);
}

private static String twoDigitString(long number) {

    if (number == 0) {
        return "00";
    }

    if (number / 10 == 0) {
        return "0" + number;
    }

    return String.valueOf(number);
}

}

我使用 Volley 库填充列表并通过构造函数将列表传递给适配器

Answer 1

请将您的 holder 类别更改为:

 public static class FeedModelViewHolder extends RecyclerView.ViewHolder {
        private View bidView;
        private TextView title;
        private TextView price;
        private TextView tags;
        private TextView location;
       public FeedModelViewHolder(View v) {
            super(v);
        title = v.findViewById(R.id.bid_title);
        price = v.findViewById(R.id.start_price)
        tags = v.findViewById(R.id.tags)
        location= v.findViewById(R.id.location);
        bidView = v;
        }
    }

在 BindViewHolder 上

@Override
public void onBindViewHolder(@NonNull final FeedModelViewHolder holder, final int position) {
    final FeedModel feedModel = feedModelList.get(position);
   holder,title.setText(feedModel.getTitle());
    holder.price.setText(feedModel.getCurrency() +" "+Convert(feedModel.getStartPrice()));
    holder.tags.setText(feedModel.getTags());
    holder.location.setText(feedModel.getLocation());
}