SandwichAdapter.java

public class SandwichAdapter extends ArrayAdapter<Sandwich> {

    public SandwichAdapter(Context context, List<Sandwich> sandwiches) {
        super(context, 0, sandwiches);
    }

    @Override
    @NonNull
    public View getView(int position, View convertView, @NonNull ViewGroup parent) {

        Sandwich sandwich = getItem(position);

        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
        }

        TextView sandwichMainName = convertView.findViewById(R.id.sandwich_name);
        ImageView sandwichImage = convertView.findViewById(R.id.sandwich_image);

        sandwichMainName.setText(sandwich.getMainName());

        Picasso.get()
                .load(sandwich.getImage())
                .into(sandwichImage);

        return convertView;
    }
}