问如何确定在FragmentActivity中选择哪个选项卡？

EN

static TabHost myTabs;
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myTabs = getTabHost();

@Override
public void onAttachFragment(Fragment fragment){
    super.onAttachFragment(fragment);
    tabValue=fragment.getId();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.one, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (tabValue) {
    case 0:
        Toast.makeText(BarcodeActivity.this, "HELLO", Toast.LENGTH_LONG).show();
    case 1:
        Intent i = new Intent(BarcodeActivity.this, NewCodeAdder.class);
        startActivity(i);
        break;
    }
    return true;
}