Expandable RecyclerView with Grid Layout Manager as child

Question

I want to have a RecyclerView which is foldable like expandable ListView and the children of each paren will present a GridView layout manager.

Is it possible? Can anyone direct me on how to do that? Thanks

Answer 1

There is a full example here of how implement an Expandable GridView using this library.

Basically you use the library to group your items into sections in order to have a header for each section but you can implement it yourself.

Then you add a GridLayoutManager, define how many columns per row (2 in this example) and set the header to have a span size of 2 columns per row and children to have a span size of 1 column per row:

    GridLayoutManager glm = new GridLayoutManager(getContext(), 2);
    glm.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
        @Override
        public int getSpanSize(int position) {
            switch(sectionAdapter.getSectionItemViewType(position)) {
                case SectionedRecyclerViewAdapter.VIEW_TYPE_HEADER:
                    return 2;
                default:
                    return 1;
            }
        }
    });
    recyclerView.setLayoutManager(glm);

In order to expand/collapse the sections, check the use of the expanded variable in the example.