Implementing FloatingGroupExpandableListView in a listview consisting 2 types of headers

Question

I tried to implement FloatingGroupExpandableListView but I was unable to modify it according to my custom listview.

The below code implements 2 types of headers in t

Answer 1

try FloatingGroupExpandableListView

I find this to be the best implementation. This use reflection to do the job. Just need to use android GroupExpandableListView and BaseExpandableListAdapter.

List<ContentWrapper> items = new ArrayList<ContentWrapper>();
ContentWrapper group;
for (int i = 1; i <= 14; i++) {
  if (!(q.get(i).getA_name().trim().equals(q.get(i-1).getA_name().trim()))) {
    group = new ContentWrapper(q.get(i).getA_name(), null,null));
  }
  ContentWrapper item = new ContentWrapper(q.get(i).getAS_name(), q.get(i).getDesc_art(),null);
  if(!(q.get(i).getExtra()==null))
     item.setShowGraySeparator();//the gray separator should be merged with item view;
  items.add(item);
}
mAdapter.addGroup(group,items);

---

public class CustomExpandableListAdapter extends BaseExpandableListAdapter {

    private List<ContentWrapper> mGroups = new ArrayList<ContentWrapper>();
    private List<List<ContentWrapper>> mData = new ArrayList<List<ContentWrapper>>();

    public void addGroup(ContentWrapper group,List<ContentWrapper> items) {
        mGroups.add(group);
        mData.add(items);
    }

    @Override
    public int getGroupCount() {
        // sticky header count
        return mGroups.size();
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        // child count for each group at 'groupPosition'
        mData.get(groupPosition).size();
    }        

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        //sticky header view at 'groupPosition'
        ContentWrapper header = mGroups.get(groupPosition);
        //show group view 
    }

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
       //child view at 'childPosition' for 'groupPosition'
       ContentWrapper item = mData.get(groupPosition).get(childPosition);
       // show item view
    }

}

Answer 2

Take a look at this implementation: https://github.com/beworker/pinned-section-listview It requires your adapter to implement interface with only one method:

public boolean isItemViewTypePinned(int viewType)

So you could easily integrate this library into your code.