水平滚动的卡片与快门效果在颤动

我想创建一个名单的卡片滚动水平管理单元,以适应效果时,从左或右滑动。

每张卡片之间有一定的间距,可以像下图那样进行屏幕显示

enter image description here

除此之外,这些水平滚动的列表元素应该包含在垂直滚动的列表中。

我所能做到的只是显示一个水平滚动卡片列表后,下面的例子在扑动文档。

class SnapCarousel extends StatelessWidget {
@override
Widget build(BuildContext context) {
final title = 'Horizontal List';


return MaterialApp(
title: title,
home: Scaffold(
appBar: AppBar(
title: Text(title),
),
body: Container(
margin: EdgeInsets.symmetric(vertical: 20.0),
height: 200.0,
child: ListView(
scrollDirection: Axis.horizontal,
children: <Widget>[
Container(
width: 160.0,
color: Colors.red,
),
Container(
width: 160.0,
color: Colors.blue,
),
Container(
width: 160.0,
color: Colors.green,
),
Container(
width: 160.0,
color: Colors.yellow,
),
Container(
width: 160.0,
color: Colors.orange,
),
],
),
),
),
);
}
}
91603 次浏览

Use PageView and ListView:

import 'package:flutter/material.dart';


main() => runApp(MaterialApp(home: MyHomePage()));


class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Carousel in vertical scrollable'),
),
body: ListView.builder(
padding: EdgeInsets.symmetric(vertical: 16.0),
itemBuilder: (BuildContext context, int index) {
if(index % 2 == 0) {
return _buildCarousel(context, index ~/ 2);
}
else {
return Divider();
}
},
),
);
}


Widget _buildCarousel(BuildContext context, int carouselIndex) {
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('Carousel $carouselIndex'),
SizedBox(
// you may want to use an aspect ratio here for tablet support
height: 200.0,
child: PageView.builder(
// store this controller in a State to save the carousel scroll position
controller: PageController(viewportFraction: 0.8),
itemBuilder: (BuildContext context, int itemIndex) {
return _buildCarouselItem(context, carouselIndex, itemIndex);
},
),
)
],
);
}


Widget _buildCarouselItem(BuildContext context, int carouselIndex, int itemIndex) {
return Padding(
padding: EdgeInsets.symmetric(horizontal: 4.0),
child: Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.all(Radius.circular(4.0)),
),
),
);
}
}

this is an old question, and I arrived here looking for something else ;-), but what WitVault was lookig is done easy with this package: https://pub.dev/packages/flutter_swiper

Demo image

The implementation:

Put the dependencies in pubsec.yaml:

dependencies:
flutter_swiper: ^1.1.6

Import it in the page where you need it:

import 'package:flutter_swiper/flutter_swiper.dart';

In the layout:

new Swiper(
itemBuilder: (BuildContext context, int index) {
return new Image.network(
"http://via.placeholder.com/288x188",
fit: BoxFit.fill,
);
},
itemCount: 10,
viewportFraction: 0.8,
scale: 0.9,
)

Screenshot:

enter image description here


If you don't want to use any 3rd party packages, you can simply try this:

class _HomePageState extends State<HomePage> {
int _index = 0;


@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Center(
child: SizedBox(
height: 200, // card height
child: PageView.builder(
itemCount: 10,
controller: PageController(viewportFraction: 0.7),
onPageChanged: (int index) => setState(() => _index = index),
itemBuilder: (_, i) {
return Transform.scale(
scale: i == _index ? 1 : 0.9,
child: Card(
elevation: 6,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
child: Center(
child: Text(
"Card ${i + 1}",
style: TextStyle(fontSize: 32),
),
),
),
);
},
),
),
),
);
}
}

To achieve the snap effect via ListView, just set the physics to PageScrollPhysics

const List<Widget> children = [
ContainerCard(),
ContainerCard(),
ContainerCard(),
];
ListView.builder(
scrollDirection: Axis.horizontal,
physics: const PageScrollPhysics(), // this for snapping
itemCount: children.length,
itemBuilder: (_, index) => children[index],
)

Advanced Snap List

If you are looking for advanced usages, such as dynamic item sizes, configurable snap points, visualization of items, and essential control (such as scrollToIndex, animate) you should use the native-based SnappyListView with way more features.

SnappyListView(
itemCount: Colors.accents.length,
itemBuilder: (context, index) {
return Container(
height: 100,
color: Colors.accents.elementAt(index),
child: Text("Index: $index"),
),
);