<BUG>mSingleStackNavigationManagerFragmentTag = UUID.randomUUID().toString();FragmentTransaction ft = getSupportFragmentManager().beginTransaction();</BUG><CONTEXT>public void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);outState.putString(STATE_NAV_TAG, mSingleStackNavigationManagerFragmentTag);}private void addFragment(SingleStackNavigationManagerFragment fragment)  {<extra_id_0>ft.add(android.R.id.content, fragment, mSingleStackNavigationManagerFragmentTag);ft.commit();</CONTEXT>
FragmentManager fm = getSupportFragmentManager();FragmentTransaction ft = fm.beginTransaction();