Android recycleview 二级列表（2）

recycleview适配器：

public class HealthArticleRecyclerViewAdapter extends SecondaryListAdapter<HealthArticleRecyclerViewAdapter.GroupItemViewHolder,HealthArticleRecyclerViewAdapter.SubItemViewHolder> {
private Context context;

private List<DataTree<HealthArticle, HealthArticle>> dts = new ArrayList<>();

public HealthArticleRecyclerViewAdapter(Context context) {
this.context = context;
 }

public void setData(List datas) {
dts = datas;
 notifyNewData(dts);
 }

@Override
 public RecyclerView.ViewHolder groupItemViewHolder(ViewGroup parent) {

 View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.healthy_article_groupitems, parent, false);

return new GroupItemViewHolder(v);
 }

@Override
 public RecyclerView.ViewHolder subItemViewHolder(ViewGroup parent) {

 View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.healthy_article_subitems, parent, false);

return new SubItemViewHolder(v);
 }

@Override
 public void onGroupItemBindViewHolder(RecyclerView.ViewHolder holder, int groupItemIndex) {

 ((GroupItemViewHolder) holder).tvGroup.setText(dts.get(groupItemIndex).getGroupItem().getTitle());

 }

@Override
 public void onSubItemBindViewHolder(RecyclerView.ViewHolder holder, int groupItemIndex, int subItemIndex) {

 ((SubItemViewHolder) holder).tvSub.setText(dts.get(groupItemIndex).getSubItems().get(subItemIndex).getTitle());

 }

@Override
 public void onGroupItemClick(Boolean isExpand, GroupItemViewHolder holder, int groupItemIndex) {
if (groupItemIndex==0){

 }
// Toast.makeText(context, "group item " + String.valueOf(groupItemIndex) + " is expand " +
// String.valueOf(isExpand), Toast.LENGTH_SHORT).show();

 }

@Override
 public void onSubItemClick(SubItemViewHolder holder, int groupItemIndex, int subItemIndex) {

// Toast.makeText(context, "sub item " + String.valueOf(subItemIndex) + " in group item " +
// String.valueOf(groupItemIndex), Toast.LENGTH_SHORT).show();

 }

public static class GroupItemViewHolder extends RecyclerView.ViewHolder {

 TextView tvGroup;

public GroupItemViewHolder(View itemView) {
super(itemView);

tvGroup = (TextView) itemView.findViewById(R.id.tv_article_groupitems);

 }
 }

public static class SubItemViewHolder extends RecyclerView.ViewHolder {

 TextView tvSub;

public SubItemViewHolder(View itemView) {
super(itemView);

tvSub = (TextView) itemView.findViewById(R.id.tv_article_subitems);
 }
 }
}