import com.thoughtbot.expandablerecyclerview.viewholders.ChildViewHolder; //导入依赖的package包/类
@Override
public ChildViewHolder onCreateChildViewHolder(ViewGroup parent, int viewType) {
  switch (viewType) {
    case ARTIST_VIEW_TYPE:
      View artist = from(parent.getContext()).inflate(R.layout.list_item_artist, parent, false);
      return new ArtistViewHolder(artist);
    case FAVORITE_VIEW_TYPE:
      View view = LayoutInflater.from(parent.getContext())
          .inflate(R.layout.list_item_singlecheck_arist, parent, false);
      SingleCheckArtistViewHolder holder = new SingleCheckArtistViewHolder(view);
      holder.setOnChildCheckedListener(this);
      return holder;
    default:
      throw new IllegalArgumentException(viewType + " is an Invalid viewType");
  }
}
 

import com.thoughtbot.expandablerecyclerview.viewholders.ChildViewHolder; //导入依赖的package包/类
@Override
public void onBindChildViewHolder(ChildViewHolder holder, int flatPosition, ExpandableGroup group,
    int childIndex) {
  int viewType = getItemViewType(flatPosition);
  Artist artist = (Artist) group.getItems().get(childIndex);
  switch (viewType) {
    case ARTIST_VIEW_TYPE:
      ((ArtistViewHolder) holder).setArtistName(artist.getName());
      break;
    case FAVORITE_VIEW_TYPE:
      ExpandableListPosition listPosition = expandableList.getUnflattenedPosition(flatPosition);
      ((SingleCheckArtistViewHolder) holder)
          .onBindViewHolder(flatPosition, childCheckController.isChildChecked(listPosition));
      ((SingleCheckArtistViewHolder) holder).setArtistName(artist.getName());
  }
}
 

import com.thoughtbot.expandablerecyclerview.viewholders.ChildViewHolder; //导入依赖的package包/类
@Override
public ChildViewHolder onCreateChildViewHolder(ViewGroup parent, int viewType) {
  switch (viewType) {
    case ARTIST_VIEW_TYPE:
      View artist = from(parent.getContext()).inflate(R.layout.list_item_artist, parent, false);
      return new ArtistViewHolder(artist);
    case FAVORITE_VIEW_TYPE:
      View favorite =
          from(parent.getContext()).inflate(R.layout.list_item_favorite_artist, parent, false);
      return new FavoriteArtistViewHolder(favorite);
    default:
      throw new IllegalArgumentException("Invalid viewType");
  }
}
 

import com.thoughtbot.expandablerecyclerview.viewholders.ChildViewHolder; //导入依赖的package包/类
@Override
public void onBindChildViewHolder(ChildViewHolder holder, int flatPosition, ExpandableGroup group,
    int childIndex) {
  int viewType = getItemViewType(flatPosition);
  Artist artist = ((Genre) group).getItems().get(childIndex);
  switch (viewType) {
    case ARTIST_VIEW_TYPE:
      ((ArtistViewHolder) holder).setArtistName(artist.getName());
      break;
    case FAVORITE_VIEW_TYPE:
      ((FavoriteArtistViewHolder) holder).setArtistName(artist.getName());
  }
}