flutter - Flutter 中的抽屉到底部导航栏

Question

我最初有一个汉堡栏，它打开了一个抽屉以在页面之间导航，我想将其更改为底部导航栏，但我有点挣扎。这是底部导航栏的代码：

class MyStatefulWidget extends StatefulWidget {
  MyStatefulWidget({Key key}) : super(key: key);

  @override
  _MyStatefulWidgetState createState() => _MyStatefulWidgetState();
}

/// This is the private State class that goes with MyStatefulWidget.
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  int _selectedIndex = 0;
  static const TextStyle optionStyle =
      TextStyle(fontSize: 30, fontWeight: FontWeight.bold);
  static const List<Widget> _widgetOptions = <Widget>[
    Text(
      'Index 0: Home',
      style: optionStyle,
    ),
    Text(
      'Index 1: Business',
      style: optionStyle,
    ),
    Text(
      'Index 2: School',
      style: optionStyle,
    ),
  ];

  void _onItemTapped(int index) {
    setState(() {
      _selectedIndex = index;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('BottomNavigationBar Sample'),
      ),
      body: Center(
        child: _widgetOptions.elementAt(_selectedIndex),
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: const <BottomNavigationBarItem>[
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Home',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.business),
            label: 'Business',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.school),
            label: 'School',
          ),
        ],
        currentIndex: _selectedIndex,
        selectedItemColor: Colors.amber[800],
        onTap: _onItemTapped,
      ),
    );
  }
}

我在这样的类中有我的主页的所有代码：

class FirstRoute extends StatefulWidget {
  FirstRoute({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _FirstRoute createState() => _FirstRoute();
}

class _FirstRoute extends State<FirstRoute> {
  @override
  Widget build(BuildContext context) {

而且我不明白如何将其放入该部分所在的底部导航栏中的小部件部分Text()。我是使用 Flutter 的新手，因此我们将不胜感激。

标签： flutterbottomnavigationview

Answer 1

您在这里要做的就是用您的小部件/屏幕替换文本小部件

例子

static  List<Widget> _widgetOptions = <Widget>[
    FirstRoute(),
    SecondRoute(),
    ThirdRoute(),    
  ];