Android：两个Fragment在同一个Framelayout上切换显示

private String[] TAGS = new String[]{"tag1", "tag2"};

private void showFragment(Fragment from, Fragment to, int position) {        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();        boolean isAdded = to.isAdded();        if (!isAdded) {            transaction.hide(from).add(R.id.layout_fragment, to, TAGS[position]).show(to).commitAllowingStateLoss();        } else {            transaction.hide(from).show(to).commitAllowingStateLoss();        }    }