ViewPager con ContextMenu que es diferente para cada vista

Tengo un ViewPagerActivity con dos vistas. Quiero registrar un menú contextual, diferente para cada vista. Probé algunas cosas (registerForContextMenu()) pero siempre terminé con ambas vistas comportándose como la segunda. ¿Algunas ideas?

public class ViewPagerActivity extends UomeActivity {

    private ViewPager viewPager;        
    private ViewPagerAdapter viewPagerAdapter;
    private ListAdapter adapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.view_pager);

        refreshAdapter();
    }

    private class ViewPagerAdapter extends PagerAdapter {

        private final List<Transaction> accountTransactions;
        private final List<User> accountUsers;

        public ViewPagerAdapter() {
            // initialize lists
        }

        @Override
        public Object instantiateItem(View collection, int viewPosition) {
            View layout;
            ListView listView;
            switch (viewPosition) {
                case 0:
                    layout = LayoutInflater.from(getApplicationContext()).inflate(
                            R.layout.list_account_paired_transactions, null);

                    List<PairedTransaction> pairedTransactions = getPairedTransactions();

                    adapter = new AccountPairedTransactionItemAdapter(ViewPagerActivity.this,
                            R.layout.list_account_paired_transactions, pairedTransactions);

                    listView = (ListView) layout.findViewById(android.R.id.list);
                    listView.setOnItemClickListener(new OnItemClickListener() {
                        @Override
                        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
                            // do something
                        }
                    });
                    registerForContextMenu(listView);
                    break;
                case 1:
                    layout = LayoutInflater.from(getApplicationContext()).inflate(
                            R.layout.list_account_transactions, null);
                    initViewPagerInfo(layout, R.string.paired_transactions,
                            R.string.all_account_transactions, R.string.empty, viewPosition);

                    adapter = new TransactionItemAdapter(ViewPagerActivity.this,
                            R.layout.list_account_transactions, accountTransactions,
                            new UserDaoImpl(
                                    getApplicationContext()));

                    listView = (ListView) layout.findViewById(android.R.id.list);
                    registerForContextMenu(listView);
                    break;
                default:
                    throw new IllegalArgumentException("Unsupported number of views.");
            }

            listView.setAdapter(adapter);
            listView.setDivider(new ColorDrawable(R.color.list_separator));
            listView.setDividerHeight(1);
            listView.setBackgroundColor(Color.WHITE);
            listView.setCacheColorHint(Color.WHITE);
            ((ViewPager) collection).addView(layout);

            return layout;
        }

        // omitted

    }

    @Override
    protected void onResume() {
        refreshAdapter();
        super.onResume();
    }

    private void refreshAdapter() {
        viewPagerAdapter = new ViewPagerAdapter();
        viewPager = findById(R.id.view_pager);
        viewPager.setAdapter(viewPagerAdapter);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfo) {
        menu.add(R.string.show_info);
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        // TODO: toast which object has been selected
    }

}