Scaffold
sample.packages.flutter.lib.src.material.scaffold.1369.
This example shows a [Scaffold] with an [AppBar], a [BottomAppBar] and a [FloatingActionButton]. The [body] is a [Text] placed in a [Center] in order to center the text within the [Scaffold]. The [FloatingActionButton] is centered and docked within the [BottomAppBar] using [FloatingActionButtonLocation.centerDocked]. The [FloatingActionButton] is connected to a callback that increments a counter.
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
static const String _title = 'Flutter Code Sample';
@override
Widget build(BuildContext context) {
return const MaterialApp(
title: _title,
home: MyStatefulWidget(),
);
}
}
class MyStatefulWidget extends StatefulWidget {
const MyStatefulWidget({Key? key}) : super(key: key);
@override
State createState() => _MyStatefulWidgetState();
}
class _MyStatefulWidgetState extends State {
int _count = 0;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Sample Code'),
),
body: Center(
child: Text('You have pressed the button $_count times.'),
),
bottomNavigationBar: BottomAppBar(
shape: const CircularNotchedRectangle(),
child: Container(height: 50.0),
),
floatingActionButton: FloatingActionButton(
onPressed: () => setState(() {
_count++;
}),
tooltip: 'Increment Counter',
child: const Icon(Icons.add),
),
floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
);
}
}
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