如何为回收站 gridview 设置多个跨度并显示页眉和页脚

Question

I have a fragment listing couple of items from an array where array is filled from a API, Also I have created a fragment class and a recycler adapter where I had called Layout manager as grid view. my view have a header contains two item of array and a footer of ad. I successfully implemented the header but am not getting my footer properly. suggested ways are valuable without a major change.

Fragment

  mRecyclerView = (RecyclerView) view.findViewById(R.id.mrecycler_channel);
        mRecyclerView.setHasFixedSize(true);
        GridLayoutManager gm = new GridLayoutManager(getActivity(),2);
        gm.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
            @Override
            public int getSpanSize(int position) {
                return position == 0 ? 2:1;
            }
        });
        mRecyclerView.setLayoutManager(gm);
        mAdapter = new StationsListAdapter(getActivity(), listStations, listlikedStations, listner);
        mRecyclerView.setAdapter(mAdapter);

recyclerview Adapter

      @Override
        public int getItemCount() {
        int array = listAddress.size();
            Log.d("abhil",""+array);
    //        if(listAddress.size()>0) {
                return listAddress.size() - 1;
    //        }else{
    //            return 0;
    //        }
        }

        @Override
        public int getItemViewType(int position) {
            if (position == 0) {
                return TYPE_HEADER;
            } else if(isPositionFooter(position)){
                return AD_TYPE;
            }
            return TYPE_ITEM;
        }
 private boolean isPositionFooter (int position) {
        return position == listAddress.size() + 1;
    }

need to set ad on last position as a normal banner ad showing in Recyclerlistview.

Answer 1

You could achieve it like this:

gm.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
        @Override
        public int getSpanSize(int position) {
            //Do your lookup here

            return (position == 0 || position == listStations.size() - 1) ? 2 : 1;
        }
    });