Flutter -如何从底部菜单导航栏的第一个选项卡屏幕打开第二个屏幕

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.2

Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => SecondScreen()),
);

class SecondScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body: Center(
        child: Text(
          'This is the second screen.',
          style: TextStyle(fontSize: 24),
        ),
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: const <BottomNavigationBarItem>[
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Home',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.business),
            label: 'Business',
          ),
        ],
      ),
    );
  }
}