public void detectFragment() {
FragmentB fragment = (FragmentB) getFragmentManager().findFragmentById(R.id.fragB);
if (fragment == null || !fragment.isInLayout()) {
TextView tv = (TextView) findViewById(R.id.buttonFragA);
tv.setText("PORTRAIT");
} else {
TextView tv = (TextView) findViewById(R.id.buttonFragA);
tv.setText("LAND");
}
}
