还是不行，我获取不到其他页面传过来的的index和flag，我是需要将其他页面传过来的index赋值给_currentIndex class TarbarPage extends StatefulWidget { final int index; final int flag; const TarbarPage({Key? key, required this.index, required this.flag}) : super(key: key); @override State<StatefulWidget> createState() => _TarbarPageState(); lass _TarbarPageState extends State { int _currentIndex = 0; //底部导航栏当前索引 final _tabPages = [ const HomePage(), const StudyPage( index: 0, ), const FantasticStoryPage(), const SetUpPage() ]; @override Widget build(BuildContext context) { return Scaffold( body: _tabPages[_currentIndex], bottomNavigationBar: BottomNavigationBar( currentIndex: _currentIndex, onTap: (index) { print('idnex$index'); setState(() { _currentIndex = index; }); String? currentPageRoute = ModalRoute.of(context)?.settings.name; print('Third page route: $currentPageRoute'); }, type: BottomNavigationBarType.fixed, items: const [ BottomNavigationBarItem( icon: Icon(Icons.home), label: ('首页'), ), BottomNavigationBarItem( icon: Icon(Icons.school), label: ('学习'), ), BottomNavigationBarItem( icon: Icon(Icons.local_library), label: ('奇闻'), ), BottomNavigationBarItem( icon: Icon(Icons.settings), label: ('设置'), ), ]), ); } } }

要将其他页面传递的`index`赋值给`_currentIndex`，你可以在`_TarbarPageState`的`initState()`方法中进行赋值操作。以下是修改后的代码示例：

class _TarbarPageState extends State<TarbarPage> {
  int _currentIndex = 0; //底部导航栏当前索引
  final _tabPages = [
    const HomePage(),
    const StudyPage(
      index: 0,
    ),
    const FantasticStoryPage(),
    const SetUpPage()
  ];

  @override
  void initState() {
    super.initState();
    _currentIndex = widget.index; // 将传递的index赋值给_currentIndex
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _tabPages[_currentIndex],
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _currentIndex,
        onTap: (index) {
          setState(() {
            _currentIndex = index;
          });
          String? currentPageRoute = ModalRoute.of(context)?.settings.name;
          print('Current page route: $currentPageRoute');
        },
        type: BottomNavigationBarType.fixed,
        items: const [
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: ('首页'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.school),
            label: ('学习'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.local_library),
            label: ('奇闻'),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.settings),
            label: ('设置'),
          ),
        ],
      ),
    );
  }
}

在上述代码中，我们在`_TarbarPageState`的`initState()`方法中将传递的`widget.index`赋值给`_currentIndex`。这样，当`TarbarPage`被创建时，初始的`_currentIndex`将被设置为传递的`index`值。

请确保在创建`TarbarPage`页面时，传递正确的`index`参数。例如：

Navigator.push(
  context,
  MaterialPageRoute(
    builder: (context) => TarbarPage(
      flag: 1,
      index: 1, // 传递正确的index值
    ),
  ),
);

这样，底部导航栏中的第二个页面就会根据传递的`index`值进行初始化，并将其赋值给`_currentIndex`。