Empty list view andriod - why?

Question

Java

The program uses an activity like "fixed tabs + swipe". One of the fragments contains a list view, which should connect to the sqlite database. Since my experience is not enough, I tried to describe the connection to the database directly in the "OnCreateView ()" method in the fragment class.
Alas, to no avail. Then I tried to put it into a separate method - the same thing, I get an empty list view. The database is not empty. Fragment class code:

public static class DummySectionFragment extends Fragment implements LoaderCallbacks<Cursor>{

    public static final String ARG_SECTION_NUMBER = "section_number";
    public DummySectionFragment() {
    }
    View v;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      View rootView = inflater.inflate(R.layout.activity_tracker,
          container, false);
      v = inflater.inflate(R.layout.activity_tracker,
          container, false);
      createList();

      return rootView;
    }

    public void createList(){
      db = new DB(act);
      db.open();
      String[] from = new String[] {DB.COLUMN_NAME, DB.COLUMN_TIME};
      int[] to = new int[] { R.id.tvTextName, R.id.tvText_time};
      
      Cursor cursor = db.getAllData();
      
      scAdapter = new SimpleCursorAdapter(getActivity(), R.layout.item, cursor, from, to, 0);
      lvData = (ListView) v.findViewById(R.id.lvData);
      lvData.setAdapter(scAdapter);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
      // TODO Auto-generated method stub
      return null;
    }

    @Override
    public void onLoadFinished(Loader<Cursor> arg0, Cursor arg1) {
      // TODO Auto-generated method stub
      
    }

    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {
      // TODO Auto-generated method stub
      
    }
  }

Answer 1

Try
inserting after the line

if(cursor != null)
Log.d("DummySectionFragment ", "count : "+cursor.getCount());

And see what will be displayed in the log, because the filled database does not mean that everything should work.