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,
    );
  }
}
  

SHARE: