Android recyclerView - create fields dynamically

Question

How do I create fields dynamically in a RecyClerView?

I’m trying to insert a RadioButton I can’t do it manually. All the examples I found, shows that you have to first create an XML layout in order to later create in Adapter. But since the amount of items I’m going to create doesn’t have the right amount, I need to do it dynamically.

I have to create a form where you will present questions and answers. As each question will have N amount of answers, I have no way to create an xml layout with a certain amount of fields, as this can change from question to question.

Follow my code so you can understand better:

public class AdapterPergunta extends RecyclerView.Adapter<AdapterPergunta.MyViewHolder> {
private ArrayAdapter<PerguntaPOJO> adpPergunta;
private ArrayAdapter<RespostaPOJO> adpResposta;
private List<RespostaPOJO> listResposta;
private LayoutInflater mLayoutInflater;
private LinearLayout lnItemAdapterPergunta;
private int mTipoPergunta;
private RecyclerViewOnClickListenerAdapterPergunta mRecyclerViewOnClickListenerAdapterPergunta;
private Context mcontext;
private RadioGroup myRadiogroup;
private RadioButton myRadiobutton;
private PerguntaPOJO perguntaPOJO;
private RespostaDAO respostaDAO;
private RespostaPOJO respostaPOJO;
private int contPergunta;
private boolean alimentou;

public AdapterPergunta(Context context, ArrayAdapter<PerguntaPOJO> adp){
    adpPergunta = adp;
    mcontext = context;
    mLayoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    //myRadiogroup = new RadioGroup(mcontext);
    lnItemAdapterPergunta = new LinearLayout(mcontext);
    //createRadioGroup();
    //lnItemAdapterPergunta.addView(myRadiogroup);
    respostaPOJO = new RespostaPOJO();
    respostaDAO = new RespostaDAO(mcontext);
    perguntaPOJO = new PerguntaPOJO();
    contPergunta=0;
    alimentou = false;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    //Chamado quando tem necessidade de criar uma nova View
    View view = mLayoutInflater.inflate(R.layout.item_adapter_pergunta_recyclerview, parent, false);
    MyViewHolder myViewHolder = new MyViewHolder(view);
    return myViewHolder;
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    //vincula os dados do DB com a View
    holder.tv_pergunta_adapter.setText("P" + String.valueOf(position) + "-" + adpPergunta.getItem(position).getDescricao());
    listResposta = respostaDAO.listaRespostaAdapter(mcontext, adpPergunta.getItem(position).getIdpergunta());
    alimentou = true;
    contPergunta = contPergunta + 1;

    Log.d("Position: ", String.valueOf(position));
    Log.d("Pergunta: ", String.valueOf(adpPergunta.getItem(position).getIdpergunta() + "-" +
            adpPergunta.getItem(position).getDescricao()));
    myRadiobutton = new RadioButton(mcontext);
    if (adpPergunta.getItem(position).getTipopergunta() == perguntaPOJO.TIPOMULTIPLAESCOLHA) {
        adpResposta = respostaDAO.preencheLista(mcontext, adpPergunta.getItem(position).getIdpergunta());
        for (int i = 0; i < adpResposta.getCount(); i++){
            if (adpPergunta.getItem(position).getIdpergunta() == adpResposta.getItem(i).getIdpergunta()) {
                respostaPOJO.setDescricao(adpResposta.getItem(i).getDescricao());
                respostaPOJO.setIdresposta(adpResposta.getItem(i).getIdresposta());

                myRadiobutton.setText(respostaPOJO.getDescricao());
                myRadiobutton.setId(respostaPOJO.getIdresposta());
                //myRadiogroup.addView(myRadiobutton);
                //createRadioButton(respostaPOJO);
                Log.d("Resposta: ", respostaPOJO.getIdresposta()+"-"+respostaPOJO.getDescricao());
            }
        }
    }


    try {
        YoYo.with(Techniques.BounceInUp)
                .duration(700)
                .playOn(holder.itemView);
    } catch (Exception e) {

    }
}

@Override
public int getItemCount() {
    //tamanho da lista
    int count = adpPergunta.getCount();
    return count;
}


public void setRecyclerViewOnClickListenerAdapterPergunta(RecyclerViewOnClickListenerAdapterPergunta r) {
    mRecyclerViewOnClickListenerAdapterPergunta = r;
}

public void addAdpterItem(PerguntaPOJO perguntaPOJO, int position) {
    adpPergunta.add(perguntaPOJO);
    notifyItemInserted(position);
}

public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    public TextView tv_pergunta_adapter;
    public RadioGroup rgItemAdapter;
    public RadioButton rbItemAdapter;
    public LinearLayout lnItemAdapterPergunta;
    //public RadioGroup radioGroup;
    public MyViewHolder(View itemView) {
        super(itemView);

        tv_pergunta_adapter = (TextView)itemView.findViewById(R.id.tv_pegunta_adapter);
        lnItemAdapterPergunta = (LinearLayout)itemView.findViewById(R.id.lnItemAdapterPergunta);

        myRadiogroup = new RadioGroup(mcontext);
        LinearLayout.LayoutParams rgParam = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT);
        myRadiogroup.setOrientation(RadioGroup.VERTICAL);
        lnItemAdapterPergunta.addView(myRadiogroup);
        itemView.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (mRecyclerViewOnClickListenerAdapterPergunta != null) {
            mRecyclerViewOnClickListenerAdapterPergunta.onClickListener(v, getLayoutPosition());
        }
    }
}

private void createRadioGroup() {
    try {
        myRadiogroup = new RadioGroup(mcontext);
        LinearLayout.LayoutParams rgParam = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT);

        myRadiogroup.setOrientation(RadioGroup.VERTICAL);
        lnItemAdapterPergunta.addView(myRadiogroup, rgParam);
    } catch (Exception e) {
        Log.d("Erro RadioGroup: ", e.toString());
    }
  }
}