Nested Recyclerview ( recyclerview inner recyclerview ) how to optimize? scrolling, performance issue

Question

i have struggled with this [nested recyclerview] problems.

The biggest issue about this is performance.

When i scrolling down or upside, annoying laggy is occur.

I found some advice that [using expandable recyclerview, rather than using nested recyclerview] but, i cannot adjust it to mycase.

i'll attach my structure, and some code of mine.

Would you check it and give me some nice tips? Thx in advance.

1> This is my list item structure. Recyclerview with CardView item and each cardView has list item. its length is variable, so i made it by recyclerview.

2> This is my code.

Code in ViewHolder

public static class ViewHolder extends RecyclerView.ViewHolder {
...
    ImageView issueImg;
    RecyclerView issue_poll_detail_list;
...
    RelativeLayout commentLayout;
    TextView commentTxt;
...

public ViewHolder(View view) {
    super(view);

    issueImg = (ImageView) view.findViewById(R.id.issue_card_img);

    issue_poll_detail_list = (RecyclerView) view.findViewById(R.id.issue_poll_detail_list);
    issue_poll_detail_list.setNestedScrollingEnabled(false);
    issue_poll_detail_list.setHasFixedSize(true);
    issue_poll_detail_list.setFocusable(false);

    issue_poll_detail_list.setDescendant...(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
    issue_poll_detail_list.setFocusableInTouchMode(false);

    ...
    commentLayout = (RelativeLayout) view.findViewById(R.id.issue_poll_footer_reply);
    commentTxt = (TextView) view.findViewById(R.id.issue_poll_footer_reply_txt);

    ...

& * Code in Adapter

    holder.issue_poll_detail_list.setLayoutManager(new WrapContentLinearLayoutManager(context));
    ((SimpleItemAnimator) holder.issue_poll_detail_list.getItemAnimator()).setSupportsChangeAnimations(false);

    pollAdapter = new PollAdapter(context, glideRequestManager, issuePolls.get(holder.getAdapterPosition()), issuePolls.get(holder.getAdapterPosition()).getNumAnswer(),
            issuePolls.get(holder.getAdapterPosition()).getCalcStartTime(), issuePolls.get(holder.getAdapterPosition()).getCalcEndTime());


    holder.issue_poll_detail_list.setAdapter(pollAdapter);

Thx !!!

Nested Recyclerview ( recyclerview inner recyclerview ) how to optimize? scrolling, performance issue

0 Answers0