Firebase List View in Horizantal View

 MainActivity Xml Code:- 

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/productrec"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

Resourse File Xml Code:-

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:cardCornerRadius="6dp"
    android:elevation="6dp"
    app:cardUseCompatPadding="true"
    >
    <RelativeLayout

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="15dp">
        <ImageView
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:src="@drawable/ic_launcher_background"
            android:layout_centerVertical="true"
            android:id="@+id/img1"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/nametext"
            android:text="Student Name"
            android:textStyle="bold"
            android:textSize="25sp"
            android:layout_toRightOf="@+id/img1"
            android:layout_marginLeft="10dp"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/coursetext"
            android:text="Course Name"
            android:textSize="25sp"
            android:layout_toRightOf="@+id/img1"
            android:layout_below="@+id/nametext"
            android:layout_marginLeft="10dp"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/emailtext"
            android:text="Email Id"
            android:textSize="25sp"
            android:layout_toRightOf="@+id/img1"
            android:layout_below="@+id/coursetext"
            android:layout_marginLeft="10dp"/>


    </RelativeLayout>

</androidx.cardview.widget.CardView>

MainActivity Java Code:-

package com.niranjan.ecomerceapp.ui.gallery;

import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.QueryDocumentSnapshot;
import com.google.firebase.firestore.QuerySnapshot;
import com.niranjan.ecomerceapp.ProductAdapter;
import com.niranjan.ecomerceapp.R;
import com.niranjan.ecomerceapp.productmodel;

import java.util.ArrayList;
import java.util.List;

public class GalleryFragment extends Fragment {
    RecyclerView productrec;
    FirebaseFirestore db;
List<productmodel> productmodelList;
ProductAdapter productAdap;



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

        View root = inflater.inflate(R.layout.fragment_gallery, container, false);
        db= FirebaseFirestore.getInstance();
productrec = root.findViewById(R.id.productrec);
productrec.setLayoutManager(new LinearLayoutManager(getActivity(),RecyclerView.HORIZONTAL,false));
productmodelList=new ArrayList<>();
productAdap = new ProductAdapter(getActivity(),productmodelList);
productrec.setAdapter(productAdap);
        db.collection("popularproduct")
                .get()
                .addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
                    @Override
                    public void onComplete(@NonNull Task<QuerySnapshot> task) {
                        if (task.isSuccessful()) {
                            for (QueryDocumentSnapshot document : task.getResult()) {
productmodel productmodel = document.toObject(com.niranjan.ecomerceapp.productmodel.class);
productmodelList.add(productmodel);
productAdap.notifyDataSetChanged();
                            }
                        }
                    }
                });



        return root;
                }
}

java Adapter class:-

package com.niranjan.ecomerceapp;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;

import java.util.List;

public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ViewHolder> {
    private Context context;
    private List<productmodel> productmodelList;

    public ProductAdapter(Context context, List<productmodel> productmodelList) {
        this.context = context;
        this.productmodelList = productmodelList;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.popularproduct,parent,false));
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        Glide.with(context).load(productmodelList.get(position));
        holder.name.setText(productmodelList.get(position).getName());
        holder.course.setText(productmodelList.get(position).getCourse());
        holder.email.setText(productmodelList.get(position).getEmail());
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView imageView;
        TextView name,course,email;
        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            imageView= itemView.findViewById(R.id.img1);
            name= itemView.findViewById(R.id.nametext);
            course= itemView.findViewById(R.id.coursetext);
            email= itemView.findViewById(R.id.emailtext);
        }
    }
}

Model class :-

package com.niranjan.ecomerceapp;

public class productmodel {
    String name;
    String course;
    String email;

    public productmodel() {
    }

    public productmodel(String name, String course, String email) {
        this.name = name;
        this.course = course;
        this.email = email;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCourse() {
        return course;
    }

    public void setCourse(String course) {
        this.course = course;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}