flutter - Flutter Persistent Bottom App Bar 仅显示文本（无导航）

Question

我的两页 Flutter 应用需要一个持久的底部应用栏，最多只能显示几行文本，没有导航。此外，此底部不应与任何内容重叠；而是限制它，比如顶部的应用栏。建议表示赞赏。例子超级赞赏。谢谢！

================@chunhunghan================
感谢您的建议。不幸的是，底页隐藏了内容：

Answer 1

您可以在下面复制粘贴运行完整代码
您可以使用并使用setbottomSheet包装AppBarContainerkToolbarHeight

bottomSheet: Container(
        height: kToolbarHeight,
        child: AppBar(
          title: Text("bottom sheet"),
        ),
      ),

工作演示

完整代码

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Expanded(
              child: ListView(
                  children:
                      List.generate(100, (i) => Text("line" + i.toString()))),
            ),
          ],
        ),
      ),
      bottomSheet: Container(
        height: kToolbarHeight,
        child: AppBar(
          title: Text("bottom sheet"),
        ),
      ),
    );
  }
}

Answer 2

建议继续使用bottomNavigationBar类似的东西：

Widget build(BuildContext context) {
    
    return new Scaffold(
      body: new Center(
        child: new ListView(
         children: List.generate(100, (i) => Text("this is a line" + i.toString()))
        ),
      ),
      bottomNavigationBar:Text(
        "this is some info"
      ) 
    );
  }

在此示例中，您可以看到列表中的所有项目都显示在底部应用栏下方，而不是隐藏。