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@DaisukeNagata
Created December 27, 2023 09:10
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Bubbling sample by Flutter
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return const MaterialApp(
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key}) : super(key: key);
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String tex = 'child';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Bubbling sample'),
),
body: NotificationListener<ScrollNotification>(
onNotification: (ScrollNotification notification) {
setState(() {
tex = 'parent';
});
return true;
},
child: SizedBox(
width: MediaQuery.of(context).size.width,
child: ChildWidget(
tex: tex,
),
),
),
);
}
}
class ChildWidget extends StatelessWidget {
const ChildWidget({super.key, required this.tex});
final String tex;
@override
Widget build(BuildContext context) {
return Container(
height: 150, // コンテナの高さ
color: Colors.grey[200],
margin: const EdgeInsets.all(8.0),
child: NotificationListener<ScrollNotification>(
onNotification: (ScrollNotification notification) {
return false; // false is propagate the notification
},
child: SingleChildScrollView(
child: Column(
children: List.generate(
20,
(itemIndex) => Padding(
padding: const EdgeInsets.all(8.0),
child: Text('Bubbling $tex'),
),
),
),
),
),
);
}
}
@DaisukeNagata
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default.mov

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