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adapter.java
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adapter.java
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package com.example.cart;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import androidx.room.Room;
import org.jetbrains.annotations.NotNull;
import java.util.List;
public class myadapter extends RecyclerView.Adapter<myadapter.myviewholder>
{
List<Product> products;
TextView rateview;
public myadapter(List<Product> products, TextView rateview) {
this.products = products;
this.rateview= rateview;
}
@NonNull
@NotNull
@Override
public myviewholder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) {
View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.singlerowdesign,parent,false);
return new myviewholder(view);
}
@SuppressLint("RecyclerView")
@Override
public void onBindViewHolder(@NonNull @NotNull myadapter.myviewholder holder, int position) {
holder.recid.setText(String.valueOf(products.get(position).getPid()));
holder.recpname.setText(products.get(position).getPname());
holder.recpprice.setText(String.valueOf(products.get(position).getPrice()));
holder.recqnt.setText(String.valueOf(products.get(position).getQnt()));
holder.delbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
AppDatabase db = Room.databaseBuilder(holder.recid.getContext(),
AppDatabase.class, "cart_db").allowMainThreadQueries().build();
ProductDao productDao = db.ProductDao();
productDao.deleteById(products.get(position).getPid());
products.remove(position);
notifyItemRemoved(position);
updateprice();
}
});
}
@Override
public int getItemCount() {
return products.size();
}
class myviewholder extends RecyclerView.ViewHolder
{
TextView recid,recpname,recqnt, recpprice;
ImageButton delbtn;
public myviewholder(@NonNull @NotNull View itemView) {
super(itemView);
recid=itemView.findViewById(R.id.recid);
recpname=itemView.findViewById(R.id.recpname);
recpprice=itemView.findViewById(R.id.recpprice);
recqnt=itemView.findViewById(R.id.recqnt);
delbtn=itemView.findViewById(R.id.delbtn);
}
}
public void updateprice()
{
int sum=0,i;
for(i=0;i< products.size();i++)
sum=sum+(products.get(i).getPrice()*products.get(i).getQnt());
rateview.setText("Total Amount : INR "+sum);
}
}