Expandable RecyclerView

A custom RecyclerView which allows for an expandable view to be attached to each ViewHolder

Usage

Only Need extends BaseExpandableRecyclerViewAdapter like Android's Expandable List View.

public class ExpandableAdapter extends BaseExpandableRecyclerViewAdapter {
  @Override
  public int getGroupCount() {
    return 0;
  }

  @Override
  public int getChildrenCount(int groupPosition) {
    return 0;
  }

  @Override
  public Object getGroup(int groupPosition) {
    return null;
  }

  @Override
  public Object getChild(int groupPosition, int childPosition) {
    return null;
  }

  @Override
  public ViewHolder onCreateGroupViewHolder(ViewGroup parent, int viewType) {
    return null;
  }

  @Override
  public ViewHolder onCreateChildViewHolder(ViewGroup parent, int viewType) {
    return null;
  }

  @Override
  public void onBindGroupViewHolder(ViewHolder groupHolder, int groupPosition) {
  }

  @Override
  public void onBindChildViewHolder(ViewHolder childHolder, int groupPosition, int childPosition) {
  }

And can add Expand Listener or toggle Expand by the Adapter Object.