This logic is written in a function with signature

private void showDialog(final AdapterView<? extends Adapter> parent,
     String title, String message, final Tag subject)

Is there a better way of doing this?

// refresh adapter
SimpleCursorAdapter adapter;
if (parent.getAdapter() instanceof WrapperListAdapter) {
    adapter = (SimpleCursorAdapter) ((WrapperListAdapter) parent.getAdapter()).getWrappedAdapter();
} else {
    adapter = (SimpleCursorAdapter) parent.getAdapter();
}
adapter.getCursor().requery();
adapter.notifyDataSetChanged();

Also, is there any point in having AdapterView<? extends Adapter> in the signature and not just AdapterView<?>?