Solution for shuffling checked positions while scrolling RecyclerView with CheckBox

All u need to do is follow these in model class
1. implement ur model class with Serialize interface
2. include a boolean variable

import java.io.Serializable;

public class Student implements Serializable {

 /**
  * 
  */
 private static final long serialVersionUID = 1L;

 private String name;

 private String emailId;

 private boolean isSelected;

 public Student() {

 }

 public Student(String name, String emailId) {

  this.name = name;
  this.emailId = emailId;

 }

 public Student(String name, String emailId, boolean isSelected) {

  this.name = name;
  this.emailId = emailId;
  this.isSelected = isSelected;
 }

 public String getName() {
  return name;
 }

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

 public String getEmailId() {
  return emailId;
 }

 public void setEmailId(String emailId) {
  this.emailId = emailId;
 }

 public boolean isSelected() {
  return isSelected;
 }

 public void setSelected(boolean isSelected) {
  this.isSelected = isSelected;
 }

}

And the adapter should be the same

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

 private List<Student> stList;

 public CardViewDataAdapter(List<Student> students) {
  this.stList = students;

 }

 // Create new views
 @Override
 public CardViewDataAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
   int viewType) {
  // create a new view
  View itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(
    R.layout.cardview_row, null);

  // create ViewHolder

  ViewHolder viewHolder = new ViewHolder(itemLayoutView);

  return viewHolder;
 }

 @Override
 public void onBindViewHolder(ViewHolder viewHolder, int position) {

  final int pos = position;

  viewHolder.tvName.setText(stList.get(position).getName());

  viewHolder.tvEmailId.setText(stList.get(position).getEmailId());

  viewHolder.chkSelected.setChecked(stList.get(position).isSelected());

  viewHolder.chkSelected.setTag(stList.get(position));

  
  viewHolder.chkSelected.setOnClickListener(new View.OnClickListener() {
   public void onClick(View v) {
    CheckBox cb = (CheckBox) v;
    Student contact = (Student) cb.getTag();

    contact.setSelected(cb.isChecked());
    stList.get(pos).setSelected(cb.isChecked());

    Toast.makeText(
      v.getContext(),
      "Clicked on Checkbox: " + cb.getText() + " is "
        + cb.isChecked(), Toast.LENGTH_LONG).show();
   }
  });

 }

 // Return the size arraylist
 @Override
 public int getItemCount() {
  return stList.size();
 }

 public static class ViewHolder extends RecyclerView.ViewHolder {

  public TextView tvName;
  public TextView tvEmailId;

  public CheckBox chkSelected;

  public Student singlestudent;

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

   tvName = (TextView) itemLayoutView.findViewById(R.id.tvName);

   tvEmailId = (TextView) itemLayoutView.findViewById(R.id.tvEmailId);
   chkSelected = (CheckBox) itemLayoutView
     .findViewById(R.id.chkSelected);

  }

 }

 // method to access in activity after updating selection
 public List<Student> getStudentist() {
  return stList;
 }

}