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bottom_navigation_bar.dart
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bottom_navigation_bar.dart
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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'package:flutter/material.dart';
import 'diagram_step.dart';
class BottomNavigationBarDiagram extends StatelessWidget with DiagramMetadata {
const BottomNavigationBarDiagram(this.name, {super.key});
@override
final String name;
@override
Widget build(BuildContext context) {
return ConstrainedBox(
key: UniqueKey(),
constraints: BoxConstraints.tight(const Size(350, 600)),
child: Container(
alignment: FractionalOffset.center,
//padding: const EdgeInsets.all(5.0),
color: Colors.white,
child: Scaffold(
appBar: AppBar(title: const Text('BottomNavigationBar Sample')),
body: const Center(
child: Text(
'Index 0: Home',
style: TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
),
),
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',
),
],
selectedItemColor: Colors.amber[800],
),
),
),
);
}
}
class BottomNavigationBarDiagramStep extends DiagramStep {
@override
final String category = 'material';
@override
Future<List<BottomNavigationBarDiagram>> get diagrams async =>
<BottomNavigationBarDiagram>[
const BottomNavigationBarDiagram('bottom_navigation_bar'),
];
}