87 lines
2.2 KiB
Dart
87 lines
2.2 KiB
Dart
import 'package:flutter/material.dart';
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void main() {
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runApp(const MaterialApp(title: 'Returning Data', home: HomeScreen()));
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}
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class HomeScreen extends StatelessWidget {
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const HomeScreen({super.key});
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(title: const Text('Returning Data Demo')),
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body: const Center(child: SelectionButton()),
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);
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}
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}
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class SelectionButton extends StatefulWidget {
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const SelectionButton({super.key});
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@override
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State<SelectionButton> createState() => _SelectionButtonState();
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}
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class _SelectionButtonState extends State<SelectionButton> {
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@override
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Widget build(BuildContext context) {
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return ElevatedButton(
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onPressed: () {
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_navigateAndDisplaySelection(context);
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},
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child: const Text('Pick an option, any option!'),
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);
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}
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Future<void> _navigateAndDisplaySelection(BuildContext context) async {
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final result = await Navigator.push<String>(
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context,
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MaterialPageRoute<String>(builder: (context) => const SelectionScreen()),
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);
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if (!context.mounted) return;
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if (result == null) return;
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ScaffoldMessenger.of(context)
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..removeCurrentSnackBar()
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..showSnackBar(SnackBar(content: Text(result)));
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}
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}
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class SelectionScreen extends StatelessWidget {
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const SelectionScreen({super.key});
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(title: const Text('Pick an option')),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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Padding(
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padding: const EdgeInsets.all(8),
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child: ElevatedButton(
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onPressed: () {
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Navigator.pop(context, 'Yep!');
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},
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child: const Text('Yep!'),
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),
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),
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Padding(
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padding: const EdgeInsets.all(8),
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child: ElevatedButton(
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onPressed: () {
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Navigator.pop(context, 'Nope.');
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},
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child: const Text('Nope.'),
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),
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),
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],
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),
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),
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);
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}
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}
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