Question

我在Recycler视图内部创建了一行，我在内部膨胀了两行或更多但是当我滚动时，项目再次被使用。我没有得到回收视图的位置或动态删除它们我需要一个提要和他们的评论。对于评论我需要膨胀布局，以便在创建了getCommentInflaterView方法的提要下面显示它们。

但是使用getCommentInflaterView（）创建的视图会重复。 MyAdapterClass：

public class AllFeedsAdapter extends
        RecyclerView.Adapter<AllFeedsAdapter.ViewHolder> {

    ArrayList<Data> arrayListAllFeedsData;
    Comment objComment;


    Context context;

    public AllFeedsAdapter(Context context, ArrayList<Data> data) {
        this.context = context;
        arrayListAllFeedsData = new ArrayList<>();
        arrayListAllFeedsData = data;
    }


    @Override
    public AllFeedsAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        LayoutInflater inflater = LayoutInflater.from(context);

        // Inflate the custom layout
        View post_row_view = inflater.inflate(R.layout.row_teacher_post, parent, false);

        // Return a new holder instance
        ViewHolder viewHolder = new ViewHolder(post_row_view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(AllFeedsAdapter.ViewHolder holder, int position) {

        holder.txtUsernamePostCreator.setText(arrayListAllFeedsData.get(position).getFull_name());
        holder.txtPostContent.setText(arrayListAllFeedsData.get(position).getFeed_text());
        holder.txtPostLikeCounter.setText(arrayListAllFeedsData.get(position).getTotal_like());
        holder.txtPostCommentsCounter.setText(arrayListAllFeedsData.get(position).getTotal_comment());

        if (arrayListAllFeedsData.get(position).getComment().size() > 0) {


            if (arrayListAllFeedsData.get(position).getComment().size() > 2) {
                for (int i = 0; i < 2; i++) {

                    objComment = arrayListAllFeedsData.get(position).getComment().get(i);

                    if (getCommentInflaterView(objComment) == null) {
                        holder.llCommentRowInflater.addView(getCommentInflaterView(objComment));
                    } else {
                        holder.llCommentRowInflater.removeAllViews();
                    }


                }
            } else {
                for (int i = 0; i < arrayListAllFeedsData.get(position).getComment().size(); i++) {

                    objComment = arrayListAllFeedsData.get(position).getComment().get(i);
                    if (getCommentInflaterView(objComment) == null) {
                        holder.llCommentRowInflater.addView(getCommentInflaterView(objComment));

                    } else {
                        holder.llCommentRowInflater.removeAllViews();
                    }

                }
            }

        }


    }

    private View getCommentInflaterView(Comment commentData) {

        LayoutInflater layoutInflater = LayoutInflater.from(context);
        View v = layoutInflater.inflate(R.layout.post_comments_list_item, null, false);

        TextView txtCommenterUsername = (TextView) v.findViewById(R.id.txt_username_commenter);
        TextView txtCommenterComment = (TextView) v.findViewById(R.id.txt_comments_from_commenter);
        TextView txtCommentDuration = (TextView) v.findViewById(R.id.txt_comment_duration);


        txtCommenterUsername.setText(commentData.getUsername());
        txtCommenterComment.setText(commentData.getComment());
        txtCommentDuration.setText(commentData.getCommentBy());


        return v;

    }

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

    /**
     * USed to create static class for all the view if listitem child
     */
    public static class ViewHolder extends RecyclerView.ViewHolder {
        // Your holder should contain a member variable
        // for any view that will be set as you render a row

        public LinearLayout llParentTeacherPost, llCommentRowInflater;

        // We also create a constructor that accepts the entire item row
        // and does the view lookups to find each subview
        public ViewHolder(View itemView) {
            // Stores the itemView in a public final member variable that can be used
            // to access the context from any ViewHolder instance.
            super(itemView);
            llParentTeacherPost = (LinearLayout) itemView.findViewById(R.id.ll_parent_teacher_post);
            llCommentRowInflater = (LinearLayout) itemView.findViewById(R.id.ll_comment_row_inflater);

            imgDpPostCreator = (ImageView) itemView.findViewById(R.id.img_dp_post_creator);
            txtUsernamePostCreator = (TextView) 
        }


    }
}

Answer 1

在适配器中覆盖这两个方法。

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

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

Answer 2

在适配器类AllFeedsAdapter中，您需要覆盖方法：

@Override
public long getItemId(int position){
// return specific item's id here
}

Answer 3

为我工作了在将数据加载到Recycler View之前，请清除内容

listOftrailers.clear（）;

Answer 4

我也有这个问题。我可以确认添加getItemId和getItemViewType到适配器在滚动时解决了recyclerview项目中的图像重复。

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

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

我会将此作为评论，但我的反馈少于5条。

Answer 5

在onBindViewHolder方法结束时，请添加：holder.itemView.setTag(arrayListAllFeedsData.get(position));

滚动回收站视图时如何防止项目重复

5 个答案: