BottomNavigationBar( type: BottomNavigationBarType.fixed, onTap: (value){if more then 3 items,, use this. 相关文章: 2021-11-12 2021-05-17 2021-08-15 2021-10-02 2021-06-04 2021-06-19 2022-12-23 2021-07-21