How to save checkbox on sqlite using recyclerView - android

Question

So I have a project that has a checkbox list that when clicked would record in a column in the bank that items were marked, so far so good. Only I did not take into account the size of the list and then when I tested using a list that used scrollrow and the items that went up were unchecked, I solved this using recyclerView. Only now I don’t know where to use the method to update checkbox for the bank, because in my project I did in Activity that displayed the items with oncheckechanged, but now it’s all in the Adapter class. I already have the method of updating checkbox working the problem is that I do not know how to fit this method into the Adapter class or how to pick up information(checboxes that have been marked) from the Adapter class and use them in another class. Thank you for your attention.

This is the method to update in the database in the case of checbox: This is being used in Activiy Tarefachecklist to display items to be checked:

            //Instancia do banco de dados
            BancoDeDados db = new BancoDeDados              

            //Objeto tarefa que será representado no checkbox
            Tarefa t = new Tarefa();

            //Metodo do banco para escolher a tarefa que sera 
            atualizado a conforme a posicao da lista
            t = db.selecionarTarefa(i);

            //Metodo que atualiza no banco, onde o numero 1 vai para coluna quando o item é checkado
            db.atualizaTarefa(new Tarefa(t.getCodigotar(), t.getCodigoCliente(), t.getNometarefa(), 1));

This is the Adapter-Tarefaadapter class code with recyclerView methods:

                public class TarefaAdapter extends 
                            RecyclerView.Adapter {
                private Context context;
                private final ArrayList<Tarefa> tarefas;
                private SparseBooleanArray sba = new SparseBooleanArray();

                public TarefaAdapter(Context context, ArrayList<Tarefa> _tarefas) {
                this.context = context;
                this.tarefas = _tarefas;
                }


            //Metodos do recyclerView 
            @Override
            public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

            View view = LayoutInflater.from(context).inflate(R.layout.tarefa, parent, false);
            NossoViewHolder holder = new NossoViewHolder(view);
            return holder;
            }


            @Override
            public void onBindViewHolder(RecyclerView.ViewHolder _holder, final int position) {

            final NossoViewHolder holder = (NossoViewHolder) _holder;
            final Tarefa tarefa = tarefas.get(position);
            holder.bind(position);



            holder.nomeCheck.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                int posicao = position;

                if (!sba.get(posicao, false)) {

                    holder.nomeCheck.setChecked(true);
                    sba.put(posicao, true);


                } else {
                    holder.nomeCheck.setChecked(false);
                    sba.put(posicao, false);

                }


                }

            });


            holder.nomeTarefa.setText(tarefa.getNometarefa());

            }


            @Override
            public int getItemCount() {

            if (tarefas == null) {
                return 0;

            } else {
                return tarefas.size();
            }
            }

The code of the Nossoviewholder class below, this class is just below my recyclerView methods:

                public class NossoViewHolder extends RecyclerView.ViewHolder {

                final CheckBox nomeCheck;
                final TextView nomeTarefa;


                public NossoViewHolder(View view) {
                    super(view);
                    nomeCheck = view.findViewById(R.id.tarefaChBox);
                    nomeTarefa = view.findViewById(R.id.nomeTarefa);


                }

                void bind(int position) {
                    if (!sba.get(position, false)) {
                    nomeCheck.setChecked(false);


                    } else {
                    nomeCheck.setChecked(true);

                    }


                }

                }