Android RecyclerView with enable and disable button.

Contact.java

package com.suresh.intent;


public class Contact {

    public String name;
    public String number;
    public boolean blocked;

    public String getName() {
        return name;
    }

    public String getNumber() {
        return number;
    }

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

    public void setNumber(String number) {
        this.number = number;
    }

    public boolean isBlocked() {
        return blocked;
    }

    public void setBlocked(boolean blocked) {
        this.blocked = blocked;
    }

}

ContactsAdapter.java

package com.suresh.intent;

import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import com.games4playstore.aroundyou.R;

import java.util.ArrayList;


public class ContactsAdapter extends RecyclerView.Adapter<ContactsAdapter.ContactsViewHolder> {

    ArrayList<Contact> contacts = new ArrayList<>();

    public ContactsAdapter(ArrayList<Contact> contacts) {
        this.contacts = contacts;
    }

    @Override
    public ContactsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_contact, parent, false);
        return new ContactsViewHolder(view);
    }

    @Override
    public void onBindViewHolder(final ContactsViewHolder holder, final int position) {
        holder.textName.setText(contacts.get(position).name);
        holder.textNumber.setText(contacts.get(position).number);
        if (contacts.get(position).isBlocked()) {
            holder.buttonBlock.setText("Enable");
        } else {
            holder.buttonBlock.setText("Block");
        }

        holder.buttonBlock.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e("test", "" + position + " : " + contacts.get(position).isBlocked());
                if (contacts.get(position).isBlocked()) {
                    contacts.get(position).setBlocked(false);
                    holder.buttonBlock.setText("block");
                } else {
                    contacts.get(position).setBlocked(true);
                    holder.buttonBlock.setText("enable");
                }
            }
        });
    }

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

    class ContactsViewHolder extends RecyclerView.ViewHolder {
        TextView textName, textNumber;
        Button buttonBlock;

        public ContactsViewHolder(View itemView) {
            super(itemView);
            textName = itemView.findViewById(R.id.text_name);
            textNumber = itemView.findViewById(R.id.text_number);
            buttonBlock = itemView.findViewById(R.id.button_block);
        }
    }

    public ArrayList<Contact> getContactList() {
        return contacts;
    }
}

item_contact.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="16dp">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/text_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Contact Name"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/text_number"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="+91 9972464598" />

    </LinearLayout>


    <Button
        android:id="@+id/button_block"
        android:layout_width="65dp"
        android:layout_height="35dp"
        android:layout_alignParentRight="true"
        android:text="enable"
        android:textSize="10sp" />


</RelativeLayout>

layout_recycler.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_contacts"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/button_get"
        android:layout_alignParentTop="true" />

    <Button
        android:id="@+id/button_get"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="get" />

</RelativeLayout>

MainActivity.java

package com.suresh.intent;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.games4playstore.aroundyou.R;

import java.util.ArrayList;


public class MainActivity extends AppCompatActivity {

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

        ArrayList<Contact> contacts = new ArrayList<>();
        for (int i = 1; i < 20; i++) {
            Contact contact = new Contact();
            contact.setName("User Name: " + i);
            contact.setNumber("Number: " + i);
            if (i == 5)
                contact.setBlocked(true);
            contacts.add(contact);
        }

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_contacts);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(linearLayoutManager);
        recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));

        final ContactsAdapter contactsAdapter = new ContactsAdapter(contacts);
        recyclerView.setAdapter(contactsAdapter);

        Button button = (Button) findViewById(R.id.button_get);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String message = "";
                ArrayList<Contact> contacts = contactsAdapter.getContactList();
                for (Contact contact : contacts) {
                    if (contact.blocked == true) {
                        message += "\n" + contact.name;
                    }
                }

                Toast.makeText(MainActivity.this, "" + message + "\n are blocked.", Toast.LENGTH_SHORT).show();
            }
        });
    }
}