CartAdator

package com.example.rr.eallowancemobileapp;

import android.app.ProgressDialog;
import android.content.Context;
import android.support.v4.app.FragmentManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by RR on 9/14/2017.
 */

public class CartAdaptor extends RecyclerView.Adapter<CartAdaptor.ViewHolder>{

    public CartAdaptor(List<CartItem> cartItems, Context context) {
        this.cartItems = cartItems;
        this.context = context;
    }

    private List<CartItem> cartItems;
    private Context context;

    ProgressDialog progressDialog;

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.cart_item, parent, false);

        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        final CartItem cartItem = cartItems.get(position);

        holder.cartItemName.setText(cartItem.getname());
        holder.cartItemID.setText(cartItem.getProductID());
        holder.cartItemQuantity.setText(cartItem.getQuantity()+"pcs");
        holder.cartItemPrice.setText("P"+cartItem.getPrice());
        holder.cartItemCategory.setText(cartItem.getCategory());

        progressDialog = new ProgressDialog(context);
        progressDialog.setMessage("Deleting to cart, please wait...");

        holder.deleteItem.setOnClickListener(new View.OnClickListener() {

            String cardno = cartItem.getcardno();
            String product_id = cartItem.getProductID();

            @Override
            public void onClick(View v) {
                progressDialog.show();
                StringRequest stringRequest = new StringRequest(
                        Request.Method.POST,
                        Constants.URL_DELETE_CART_ITEM,
                        new Response.Listener<String>() {
                            @Override
                            public void onResponse(String response) {
                                try {
                                    JSONObject jsonObject = new JSONObject(response);
                                    Toast.makeText(context, jsonObject.getString("message"), Toast.LENGTH_SHORT).show();
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }

                            }
                        },
                        new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {
                                progressDialog.dismiss();
                                Toast.makeText(context, "Error", Toast.LENGTH_SHORT).show();
                            }
                        }
                ){
                    @Override
                    protected Map<String, String> getParams() throws AuthFailureError {
                        Map<String, String> params = new HashMap<>();
                        params.put("cardno", cardno);
                        params.put("product_id", product_id);

                        return params;
                    }
                };

                RequestQueue requestQueue = Volley.newRequestQueue(context);
                requestQueue.add(stringRequest);
            }
        });

    }

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

    public class ViewHolder extends RecyclerView.ViewHolder{

        public TextView cartItemID;
        public TextView cartItemName;
        public TextView cartItemQuantity;
        public TextView cartItemPrice;
        public TextView cartItemCategory;
        public TextView cartItemCardNo;
        public ImageButton deleteItem;

        public ViewHolder(View itemView) {
            super(itemView);

            cartItemCardNo = (TextView) itemView.findViewById(R.id.cartItemCardNo);
            cartItemID = (TextView) itemView.findViewById(R.id.cartItemID);
            cartItemName = (TextView) itemView.findViewById(R.id.cartItemName);
            cartItemQuantity = (TextView) itemView.findViewById(R.id.cartItemQuantity);
            cartItemPrice = (TextView) itemView.findViewById(R.id.cartItemPrice);
            cartItemCategory = (TextView) itemView.findViewById(R.id.cartItemCategory);
            deleteItem = (ImageButton) itemView.findViewById(R.id.deleteItem);

            cartItemID.setAlpha(0.0f);
            cartItemCategory.setAlpha(0.0f);
            cartItemCardNo.setAlpha(0.0f);
        }
    }

}