Go through all the rows of a custom listview and get the values of their respective Textview

I have a custom list which is loaded with radiobuttons and textview, by selecting a radiobutton (Yes or No) the textview changes to a value, at the end of the list I have a button that when pressed will go through row by row the listview, getting the values and printing them with a toast

While the elements are visible they can be captured with the last visible element, but in my case I have more than 30 rows and these can vary. I would like to capture all the values of the textview. How could I do it?

Try it in the following way, but it does not work.

                for (int i=1; i <= lista.getCount();i++){
                View view = lista.getChildAt(i);
                TextView x = (TextView) view.findViewById(R.id.lbl_respuesta);
                Toast.makeText(getApplicationContext(),String.valueOf(x),Toast.LENGTH_SHORT).show();
            }

Some other way of doing it. I would appreciate your help, thank you very much.

My Listview extends an ArrayAdapter and this is your code

public class Adapter extends ArrayAdapter<Preguntas> {
private Context context;
private ArrayList<Preguntas> datos;

public Adapter(Context context, ArrayList datos) {
    super(context, R.layout.pregunta_respuesta, datos);
    this.context = context;
    this.datos = datos;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View item = convertView;
    final PreguntasHolder holder;
    Preguntas preguntas = datos.get(position);

    if (item == null) {
        item = LayoutInflater.from(context).inflate(R.layout.pregunta_respuesta, null);

        holder = new PreguntasHolder();
        holder.idPregunta = (TextView) item.findViewById(R.id.lbl_idPregunta);
        holder.pregunta = (TextView) item.findViewById(R.id.lbl_pregunta);
        holder.radiogroup = (RadioGroup) item.findViewById(R.id.radioGroup);
        holder.lbl_respuesta = (TextView) item.findViewById(R.id.lbl_respuesta);

        final RadioButton[] rb = new RadioButton[2];
        for (int i=0; i<2;i++){
            rb[i] = new RadioButton(context);
            rb[i].setId(i);

            RadioGroup.LayoutParams params = new RadioGroup.LayoutParams(0,
                    RadioGroup.LayoutParams.WRAP_CONTENT);
            params.weight = 1.0f;
            params.setMargins(5,0,5,10);
            holder.radiogroup.addView(rb[i],params);
        }

        holder.radiogroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch (checkedId) {
                    case R.id.rbtSi:
                        Toast.makeText(getContext(), "si", Toast.LENGTH_SHORT).show();
                            holder.lbl_respuesta.setText("1");
                        break;
                    case R.id.rbtNo:
                        Toast.makeText(getContext(), "NO", Toast.LENGTH_SHORT).show();
                        holder.lbl_respuesta.setText("0");
                        break;
                    default:
                        break;
                }
            }
        });

        item.setTag(holder);
    }else {

        holder = (PreguntasHolder) item.getTag();
    }

    holder.idPregunta.setText(String.valueOf(preguntas.getIdPregunta()));
    holder.pregunta.setText(String.valueOf(preguntas.getPregunta()));
    return item;
}

public class PreguntasHolder {
    public TextView idPregunta, pregunta,lbl_respuesta;
    public RadioGroup radiogroup;
}

@Override
public int getViewTypeCount() {
    return datos.size();
}

@Override
public int getItemViewType(int position) {
    return position;
}

@Override
public long getItemId(int position) {
    return position;
}
}