How can I select only one checkbox in Recyclerview and notifydataset changed

Question

In my code I have create recyclerview with check box and default one item selected already. now I want when select other item checkbox so deselect all other items mean one i

Answer 1

public class MyTeamAdapter extends RecyclerView.Adapter { private Context context; private ArrayList myTeams;

private int prevSelection = -1;


public MyTeamAdapter(Context context, ArrayList myTeams) {
    this.context = context;
    this.myTeams = myTeams;
}

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


@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {
    final Team team = myTeams.get(position);
    ViewHolder viewHolder = (ViewHolder) holder;

    if (team.isTeamSelected()) {
        viewHolder.checkTeam.setChecked(true);
        prevSelection = position;
    } else {
        viewHolder.checkTeam.setChecked(false);
    }

    viewHolder.checkTeam.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
            if (b) {
                team.setTeamSelected(true);
                if (prevSelection >= 0) {
                    myTeams.get(prevSelection).setTeamSelected(false);
                    notifyItemChanged(prevSelection);
                }
                prevSelection = position;
            } else {
                team.setTeamSelected(false);
            }
        }
    });
}

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

public class ViewHolder extends RecyclerView.ViewHolder {
    RelativeLayout captainHolder, viceCaptainHolder;
    CheckBox checkTeam;
    TextView tvTeamName, tvCaptainName, tvCaptain, tvVCapName, tvVC, tvWcktKeeper, tvBatsMen, tvAllRounder, tvBowler;
    ImageView edtTeam, viewTeam, copyTeam;


    public ViewHolder(View itemView) {
        super(itemView);
        checkTeam = itemView.findViewById(R.id.cb_team);

        tvTeamName = itemView.findViewById(R.id.tv_team_name);

        captainHolder = itemView.findViewById(R.id.captain_holder);
        tvCaptainName = captainHolder.findViewById(R.id.tv_player_name);
        tvCaptain = captainHolder.findViewById(R.id.tv_player_type);

        viceCaptainHolder = itemView.findViewById(R.id.vc_holder);
        tvVCapName = viceCaptainHolder.findViewById(R.id.tv_player_name);
        tvVC = viceCaptainHolder.findViewById(R.id.tv_player_type);

        tvWcktKeeper = itemView.findViewById(R.id.tv_wckt_keeper);
        tvBatsMen = itemView.findViewById(R.id.tv_bats_men);
        tvAllRounder = itemView.findViewById(R.id.tv_all_rounder);
        tvBowler = itemView.findViewById(R.id.tv_baller);

        edtTeam = itemView.findViewById(R.id.edt_team);
        viewTeam = itemView.findViewById(R.id.view_team);
        copyTeam = itemView.findViewById(R.id.copy_team);

    }
}

}