public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>  {
    private List<StepDB> steps;
    private ItemClickListener clickListener;

    public MyAdapter(List<StepDB> steps) {

        this.steps = steps;
    }


    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item, parent, false);
        ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int i) {

        StepDB step = steps.get(i);
        holder.step_name.setText(step.step_name);
        holder.author.setText(step.author);
        Picasso.with(holder.img.getContext()).load(step.img).resize(50,50).into(holder.img);

    }



    @Override
    public int getItemCount() {
        return steps.size();
    }

    public void setClickListener    (ItemClickListener itemClickListener) {
        this.clickListener = itemClickListener;
    }


    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        private TextView step_name;
        private TextView author;
        private ImageView img;



        public ViewHolder(View itemView) {
            super(itemView);
            step_name = (TextView) itemView.findViewById(R.id.tvStep_name);
            author = (TextView) itemView.findViewById(R.id.tvAuthor);
            img = (ImageView) itemView.findViewById(R.id.ivImage);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            if (clickListener != null) clickListener.onClick(v, getAdapterPosition());
        }
    }
}