listview适配器

public class ListAdapter extends BaseAdapter {
    List<Super.SongListBean> song_list;
    Context context;

    public ListAdapter(List<Super.SongListBean> song_list, Context context) {
        this.song_list = song_list;
        this.context = context;
    }

    @Override
    public int getCount() {
        return song_list.size();
    }

    @Override
    public Object getItem(int position) {
        return song_list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView==null){
            holder=new ViewHolder();
            convertView=View.inflate(context, R.layout.item_home,null);
            holder.img= (ImageView) convertView.findViewById(R.id.it_img);
            holder.tv= (TextView) convertView.findViewById(R.id.it_text);
            convertView.setTag(holder);
        }else {
            holder= (ViewHolder) convertView.getTag();
        }
        holder.tv.setText(song_list.get(position).getTitle());
        ImageLoader.getInstance().displayImage(song_list.get(position).getPic_small(),holder.img);
        return convertView;
    }
    class ViewHolder{
        ImageView img;
        TextView tv;
    }
}
调用适配器 
holderB.recyclerView.setLayoutManager(new LinearLayoutManager(mcontext));
Home_TwoAdapter adapter = new Home_TwoAdapter(mcontext, song_list);
holderB.recyclerView.setAdapter(adapter);