![](/img/trans.png)
[英]Listview not scrolling with swipe gesture on listview Flutter
[英]Flutter vertical swipe and avoiding scrolling Listview
您可以使用GestureDetector
包装图像小部件,并使用此方法在用户点击图像小部件时禁用滚动行为。
我发现使用此方法的一个方便行为是用户仍然可以根据需要向上或向下滚动(点击并立即滑动而不是点击向下然后滑动)。 这可能不是最好的方法,因为我不能只阻止向上滚动行为。
这是我的例子:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
debugShowCheckedModeBanner: false,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
final String title;
const MyHomePage({
Key? key,
required this.title,
}) : super(key: key);
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ScrollPhysics physics = const AlwaysScrollableScrollPhysics();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: ListView(
// Add the scroll physics controller here
physics: physics,
children: [
for (int i = 0; i < 20; i++) ...[
// Wrap the Widget with GestureDetector
GestureDetector(
// Disable the scroll behavior when users tap down
onTapDown: (_) {
setState(() {
physics = const NeverScrollableScrollPhysics();
});
},
// Enable the scroll behavior when user leave
onTapCancel: () {
setState(() {
physics = const AlwaysScrollableScrollPhysics();
});
},
onPanUpdate: (details) {
// Catch the swipe up action.
if (details.delta.dy < 0) {
print('Swiping up the element $i');
}
// Catch the swipe down action.
if (details.delta.dy > 0) {
print('Swiping down the element $i');
}
},
// Your image widget here
child: Padding(
padding: const EdgeInsets.all(20),
child: Container(
width: 100,
height: 100,
color: Colors.red,
),
),
),
Center(child: Text('Element $i')),
],
],
),
);
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.