Refresh TextView on onResume

package br.com.automaserv.stocserv.fragments;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.List;
import br.com.automaserv.stocserv.R;
import br.com.automaserv.stocserv.StocApplication;
import br.com.automaserv.stocserv.activities.FichaItemProdutoActivity;
import br.com.automaserv.stocserv.model.ORM;

public class ListaProdutosVendaFragment extends StocStringListFragment<ORM.ItemVenda, FichaItemProdutoActivity> {

private TextView tvSubtotal;
private StocApplication app;

public ListaProdutosVendaFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = super.onCreateView(inflater, container, savedInstanceState);

    loadAllOnResume = true;

    tvSubtotal   = (TextView) view.findViewById(R.id.tvSubTotal);

    app = getApp();

    return view;
}

@Override
public void onStart() {
    startTask();
}

private void startTask() {
    new Task().execute();
}
private class Task extends AsyncTask<Void, Void, Void> {
    private String text;

    @Override
    protected Void doInBackground(Void... voids) {
        Log.d("test","doInBackground");
        this.text = "funcionou";
        return null;
    }

    protected void onPostExecute(Void result) {
        Log.d("test","onPostExecute");
        tvSubtotal.setText(text);
    }
}

@Override
protected Class<FichaItemProdutoActivity> getActivityClassName() {
    return FichaItemProdutoActivity.class;
}

@Override
protected void loadAll() {
    replaceData( app.itensVenda );
}

@Override
public boolean onQueryTextSubmit(String query) {
    List<ORM.Produto> res = ORM.Produto.buscar( query );
    replaceData(res);
    return true;
}

@Override
protected int getLayoutResourceId() {
    return R.layout.lista_produtos_venda_fragment;
}

}

Hello everyone! I have the following fragment described above and need to update the contents of the TextSubTextText whenever the fragment is redisplayed. The snippet is a list of items and should display the sum of the items added. But I'm always getting the error "did not call through to super.onResume ()"