如何在FrameLayout中显示片段隐私

public class PrivacyFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_privacy, container, false);
    }
}

<FrameLayout
    android:id="@+id/fragment_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.fragment_container, new PrivacyFragment());
fragmentTransaction.commit();

if (userHasPrivacyAccess()) {
    fragmentManager.beginTransaction()
                   .show(new PrivacyFragment())
                   .commit();
} else {
    fragmentManager.beginTransaction()
                   .hide(new PrivacyFragment())
                   .commit();
}