Using external Sqlite in Assets folder with Fragment

Question

I am using an external sqlite database, in the Assets folder.

I followed that model (loading-a-bank-created-externally) and I was able to access the bank.

How much testing worked normally on my Mainactivity, the problem I had was when I tried using with Fragment.

In my project I am using Ragments, and I am not able to make it work.

Part of the code that is inside a Fragment;

    helper = new DatabaseHelper(getActivity(),null,1);
    db = helper.getDatabase();

    list = (ListView) rootView.findViewById(R.id.listalivro);
    Cursor cursor = db.query("livro", campos, null, null, null, null, null);
    SimpleCursorAdapter Madapter = new SimpleCursorAdapter(getActivity(),
        android.R.layout.simple_list_item_1,
        cursor,
        new String[] {"ver_livro","ver_capitulo"},
        new int[] {R.id.ver_livro,R.id.ver_capitulo }, 0);

    list.setAdapter(Madapter);
    list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

Remembering that this code worked when I created a new project without Fragment, assemble everything in Mainactivity. It copies the database and opens normally. But in my project it doesn’t work.

11-23 16:17:19.053: E/trace(755): error Opening trace file: No such file or directory (2)

I’ve already made sure the bank is in the Assets folder, there’s no firewall or Antivirus blocking access. Remembering that if I use without Fragment works smoothly.