public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ProductViewHolder> {


private Context mCtx;

private List<Product> productList;

public ProductAdapter(Context mCtx, List<Product> productList) {
    this.mCtx = mCtx;
    this.productList = productList;
}

private Fragment fragment;


@Override
public ProductViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    LayoutInflater inflater = LayoutInflater.from(mCtx);
    View view = inflater.inflate(R.layout.list_layout, null);
    return new ProductViewHolder(view);
}

@Override
public void onBindViewHolder(ProductViewHolder holder, int position) {
    Product product = productList.get(position);

    holder.textViewTitle.setText(product.getTitle());

    holder.imageView.setImageDrawable(mCtx.getResources().getDrawable(product.getImage()));

}


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


public class ProductViewHolder extends RecyclerView.ViewHolder {
    ImageView imageView;
    TextView textViewTitle, textViewShortDesc, textViewRating, textViewPrice;

    Button buttonImage;

    public ImageView getImageView() {
        return imageView;
    }

    public void setImageView(ImageView imageView) {
        this.imageView = imageView;
    }

    public ProductViewHolder(final View itemView) {
        super(itemView);

        textViewTitle = itemView.findViewById(R.id.textViewTitle);

        imageView = itemView.findViewById(R.id.imageView);

        buttonImage = itemView.findViewById(R.id.buttonImage);


        buttonImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {


                FragmentBigPicture fragmentBigPicture = new FragmentBigPicture();
                FragmentManager fragmentManager = ((Activity) mCtx).getFragmentManager();

                fragmentManager.beginTransaction().replace(R.id.container, fragment)
                        .commit();


            }
        });
    }


}

public class Product {
//private int id;
private String title;
/*  private String shortdesc;
  private double rating;
  private double price;*/
private int image;

public String getTitle() {
    return title;
}

public Product(int image) {
    this.image = image;
}

public Product(String title, int image) {
    this.title = title;
    this.image = image;
}

public int getImage() {
    return image;
}}

public class FragmentImport extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
List<Product> productList;

//the recyclerview
RecyclerView recyclerView;



private OnFragmentInteractionListener mListener;

public FragmentImport() {
    // Required empty public constructor
}

/**
 * Use this factory method to create a new instance of
 * this fragment using the provided parameters.
 *
 * @param param1 Parameter 1.
 * @param param2 Parameter 2.
 * @return A new instance of fragment FragmentImport.
 */
// TODO: Rename and change types and number of parameters
public static FragmentImport newInstance(String param1, String param2) {
    FragmentImport fragment = new FragmentImport();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);

    }
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {




        View view = inflater.inflate(R.layout.fragment_import, container, false);
    recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));


    productList = new ArrayList<>();


    productList.add(
            new Product("Apple MacBook Air Core i5 5th Gen - (8 GB/128 GB SSD/Mac OS Sierra)",
                    R.drawable.macbook));

    productList.add(
            new Product(
                    "Dell Inspiron 7000 Core i5 7th Gen - (8 GB/1 TB HDD/Windows 10 Home)",
                    R.drawable.dellinspiron));

    productList.add(
            new Product(
                    "Microsoft Surface Pro 4 Core m3 6th Gen - (4 GB/128 GB SSD/Windows 10)",
                    R.drawable.surface));

    ProductAdapter adapter = new ProductAdapter(getActivity(), productList);


    recyclerView.setAdapter(adapter);

    return view;
}






@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}}

/**
 * This interface must be implemented by activities that contain this
 * fragment to allow an interaction in this fragment to be communicated
 * to the activity and potentially other fragments contained in that
 * activity.
 * <p>
 * See the Android Training lesson <a href=
 * "http://developer.android.com/training/basics/fragments/communicating.html"
 * >Communicating with Other Fragments</a> for more information.
 */
 interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}

public class FragmentBigPicture extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
ImageView imageView2;


private OnFragmentInteractionListener mListener;

public FragmentBigPicture() {
    // Required empty public constructor
}

/**
 * Use this factory method to create a new instance of
 * this fragment using the provided parameters.
 *
 * @param param1 Parameter 1.
 * @param param2 Parameter 2.
 * @return A new instance of fragment FragmentBigPicture.
 */
// TODO: Rename and change types and number of parameters
public static FragmentBigPicture newInstance(String param1, String param2) {
    FragmentBigPicture fragment = new FragmentBigPicture();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);
    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_big_picture, container, false);
    imageView2 = (ImageView) view.findViewById(R.id.imageView2);
    FragmentImport fImport = new FragmentImport();


    return view;
}


// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
    if (mListener != null) {
        mListener.onFragmentInteraction(uri);
    }
}


@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}

/**
 * This interface must be implemented by activities that contain this
 * fragment to allow an interaction in this fragment to be communicated
 * to the activity and potentially other fragments contained in that
 * activity.
 * <p>
 * See the Android Training lesson <a href=
 * "http://developer.android.com/training/basics/fragments/communicating.html"
 * >Communicating with Other Fragments</a> for more information.
 */
public interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}}