public void removeCommentFromList(int pos) {
   listaComments.remove(itemposition);
   commentsadapter.notifyDataSetChanged();
   if (listaComments.size() == 1) {
     tvCountComments.setText(Integer.toString(listaComments.size()) + " comentario");
   } else {
     tvCountComments.setText(Integer.toString(listaComments.size()) + " comentarios");
   }
 }
 public void addCommentToList(Comment comment) {
   listaComments.add(0, comment);
   commentsadapter.notifyDataSetChanged();
   if (listaComments.size() == 1) {
     tvCountComments.setText(Integer.toString(listaComments.size()) + " comentario");
   } else {
     tvCountComments.setText(Integer.toString(listaComments.size()) + " comentarios");
   }
 }