Pull to Refresh with RecyclerView in Android with Example

package com.gfg.recyclerview_pull;

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 java.util.ArrayList;

// Extends the Adapter class to RecyclerView.Adapter
// and implement the unimplemented methods
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder> {
    ArrayList images, text;
    Context context;

    // Constructor for initialization
    public Adapter(Context context, ArrayList images, ArrayList text) {
        this.context = context;
        this.images = images;
        this.text = text;
    }

    @NonNull
    @Override
    public Adapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        // Inflating the Layout(Instantiates list_item.xml layout file into View object)
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);

        // Passing view to ViewHolder
        Adapter.ViewHolder viewHolder = new Adapter.ViewHolder(view);
        return viewHolder;
    }

    // Binding data to the into specified position
    @Override
    public void onBindViewHolder(@NonNull Adapter.ViewHolder holder, int position) {
        // TypeCast Object to int type
        int res = (int) images.get(position);
        holder.images.setImageResource(res);
        holder.text.setText((CharSequence) text.get(position));
    }

    @Override
    public int getItemCount() {
        // Returns number of items currently available in Adapter
        return text.size();
    }

    // Initializing the Views
    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView images;
        TextView text;

        public ViewHolder(View view) {
            super(view);
            images = (ImageView) view.findViewById(R.id.imageView);
            text = (TextView) view.findViewById(R.id.textView);
        }
    }
}

package com.gfg.recyclerview_pull;

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Random;

public class MainActivity extends AppCompatActivity {
    SwipeRefreshLayout swipeRefreshLayout;
    RecyclerView recyclerView;

    // Using ArrayList to store images and text data
    ArrayList images = new ArrayList<>(Arrays.asList(R.drawable.battery, R.drawable.bluetooth_disabled,
            										 R.drawable.nfc, R.drawable.security_update_warning,
                                                     R.drawable.signal_cellular_1_bar, R.drawable.signal_cellular_2_bar
                                                     , R.drawable.wifi_off));
  
    ArrayList text = new ArrayList<>(Arrays.asList("Battery Stats", "Bluetooth", "NFC", "Security Update", "Sim 1", "Sim 2", "Wifi"));

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Getting reference of swipeRefreshLayout and recyclerView
        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
        recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

        // Setting the layout as Linear for vertical orientation to have swipe behavior
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext());
        recyclerView.setLayoutManager(linearLayoutManager);

        // Sending reference and data to Adapter
        Adapter adapter = new Adapter(MainActivity.this, images, text);

        // Setting Adapter to RecyclerView
        recyclerView.setAdapter(adapter);

        // SetOnRefreshListener on SwipeRefreshLayout
        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                swipeRefreshLayout.setRefreshing(false);
                RearrangeItems();
            }
        });
    }

    public void RearrangeItems() {
        // Shuffling the data of ArrayList using system time
        Collections.shuffle(images, new Random(System.currentTimeMillis()));
        Collections.shuffle(text, new Random(System.currentTimeMillis()));
        Adapter adapter = new Adapter(MainActivity.this, images, text);
        recyclerView.setAdapter(adapter);
    }
}