Listview 如何在颤振中制作水平滚动动画
我想用这个动画制作一个可滚动的列表视图，比如在flifter中，我如何才能做到这一点Listview 如何在颤振中制作水平滚动动画,listview,animation,flutter,scroll,Listview,Animation,Flutter,Scroll,我想用这个动画制作一个可滚动的列表视图，比如在flifter中，我如何才能做到这一点 PS：不要介意buggy动画，它仅用于演示您可以复制粘贴运行下面的完整代码 您可以使用软件包 您可以使用标题和图像url定义一个类，请参见下面的完整代码 并设置CarouselSliderenlargeCenterPage:true 代码片段 //Auto playing carousel final CarouselSlider autoPlayDemo = CarouselSlider(
PS：不要介意buggy动画，它仅用于演示您可以复制粘贴运行下面的完整代码
您可以使用软件包
您可以使用
标题图像url并设置
CarouselSliderenlargeCenterPage:true代码片段
//Auto playing carousel
final CarouselSlider autoPlayDemo = CarouselSlider(
viewportFraction: 0.7,
aspectRatio: 2.0,
autoPlay: true,
enlargeCenterPage: true,
items: payloadList.map((payload) {
return Builder(builder: (BuildContext context) {
return Column(
children: <Widget>[
Text(payload.title),
Flexible(
child: Container(
width: MediaQuery.of(context).size.width,
margin: EdgeInsets.symmetric(horizontal: 10.0),
decoration: BoxDecoration(
color: Colors.transparent,
),
child: Image.network(
payload.imageUrl,
height: 250,
width: 250,
//fit: BoxFit.fill,
),
),
),
],
);
});
}).toList(),
);
//自动播放旋转木马
最终旋转滑翔机自动播放演示=旋转滑翔机(
视口分数：0.7，
aspectRatio:2.0，
自动播放：对，
放大中心页：正确，
项目：payloadList.map（（有效负载）{
返回生成器（生成器：（BuildContext上下文）{
返回列(
儿童：[
文本（有效载荷.标题），
灵活的(
子：容器(
宽度：MediaQuery.of（context）.size.width，
边缘：边缘组。对称（水平：10.0），
装饰：盒子装饰(
颜色：颜色。透明，
),
孩子：Image.network(
payload.imageUrl，
身高：250，
宽度：250，
//fit:BoxFit.fill，
),
),
),
],
);
});
}).toList（），
);
import 'package:carousel_slider/carousel_slider.dart';
import 'package:flutter/material.dart';
class Payload {
String title;
String imageUrl;
Payload({this.title, this.imageUrl});
}
final List<Payload> payloadList = [
Payload(
title: "Title 1",
imageUrl: 'https://via.placeholder.com/250x200',
),
Payload(
title: "Title 2",
imageUrl: 'https://via.placeholder.com/250x200',
),
Payload(
title: "Title 3",
imageUrl: 'https://via.placeholder.com/250x200',
),
];
final List<String> imgList = [
'https://images.unsplash.com/photo-1520342868574-5fa3804e551c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=6ff92caffcdd63681a35134a6770ed3b&auto=format&fit=crop&w=1951&q=80',
'https://images.unsplash.com/photo-1522205408450-add114ad53fe?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=368f45b0888aeb0b7b08e3a1084d3ede&auto=format&fit=crop&w=1950&q=80',
'https://images.unsplash.com/photo-1519125323398-675f0ddb6308?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=94a1e718d89ca60a6337a6008341ca50&auto=format&fit=crop&w=1950&q=80',
'https://images.unsplash.com/photo-1523205771623-e0faa4d2813d?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=89719a0d55dd05e2deae4120227e6efc&auto=format&fit=crop&w=1953&q=80',
'https://images.unsplash.com/photo-1508704019882-f9cf40e475b4?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=8c6e5e3aba713b17aa1fe71ab4f0ae5b&auto=format&fit=crop&w=1352&q=80',
'https://images.unsplash.com/photo-1519985176271-adb1088fa94c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=a0c8d632e977f94e5d312d9893258f59&auto=format&fit=crop&w=1355&q=80'
];
void main() => runApp(CarouselDemo());
final Widget placeholder = Container(color: Colors.grey);
final List child = map<Widget>(
imgList,
(index, i) {
return Container(
margin: EdgeInsets.all(5.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(5.0)),
child: Stack(children: <Widget>[
Image.network(i, fit: BoxFit.cover, width: 1000.0),
Positioned(
bottom: 0.0,
left: 0.0,
right: 0.0,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
Color.fromARGB(200, 0, 0, 0),
Color.fromARGB(0, 0, 0, 0)
],
begin: Alignment.bottomCenter,
end: Alignment.topCenter,
),
),
padding: EdgeInsets.symmetric(vertical: 10.0, horizontal: 20.0),
child: Text(
'No. $index image',
style: TextStyle(
color: Colors.white,
fontSize: 20.0,
fontWeight: FontWeight.bold,
),
),
),
),
]),
),
);
},
).toList();
List<T> map<T>(List list, Function handler) {
List<T> result = [];
for (var i = 0; i < list.length; i++) {
result.add(handler(i, list[i]));
}
return result;
}
class CarouselWithIndicator extends StatefulWidget {
@override
_CarouselWithIndicatorState createState() => _CarouselWithIndicatorState();
}
class _CarouselWithIndicatorState extends State<CarouselWithIndicator> {
int _current = 0;
@override
Widget build(BuildContext context) {
return Column(children: [
CarouselSlider(
items: child,
autoPlay: true,
enlargeCenterPage: true,
aspectRatio: 2.0,
onPageChanged: (index) {
setState(() {
_current = index;
});
},
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: map<Widget>(
imgList,
(index, url) {
return Container(
width: 8.0,
height: 8.0,
margin: EdgeInsets.symmetric(vertical: 10.0, horizontal: 2.0),
decoration: BoxDecoration(
shape: BoxShape.circle,
color: _current == index
? Color.fromRGBO(0, 0, 0, 0.9)
: Color.fromRGBO(0, 0, 0, 0.4)),
);
},
),
),
]);
}
}
class CarouselDemo extends StatelessWidget {
@override
Widget build(BuildContext context) {
//Manually operated Carousel
final CarouselSlider manualCarouselDemo = CarouselSlider(
items: child,
autoPlay: false,
enlargeCenterPage: true,
viewportFraction: 0.9,
aspectRatio: 2.0,
);
//Auto playing carousel
final CarouselSlider autoPlayDemo = CarouselSlider(
viewportFraction: 0.7,
aspectRatio: 2.0,
autoPlay: true,
enlargeCenterPage: true,
items: payloadList.map((payload) {
return Builder(builder: (BuildContext context) {
return Column(
children: <Widget>[
Text(payload.title),
Flexible(
child: Container(
width: MediaQuery.of(context).size.width,
margin: EdgeInsets.symmetric(horizontal: 10.0),
decoration: BoxDecoration(
color: Colors.transparent,
),
child: Image.network(
payload.imageUrl,
height: 250,
width: 250,
//fit: BoxFit.fill,
),
),
),
],
);
});
}).toList(),
);
//Button controlled carousel
Widget buttonDemo() {
final basicSlider = CarouselSlider(
items: child,
autoPlay: false,
enlargeCenterPage: true,
viewportFraction: 0.9,
aspectRatio: 2.0,
initialPage: 2,
);
return Column(children: [
basicSlider,
Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [
Flexible(
child: RaisedButton(
onPressed: () => basicSlider.previousPage(
duration: Duration(milliseconds: 300), curve: Curves.linear),
child: Text('←'),
),
),
Flexible(
child: RaisedButton(
onPressed: () => basicSlider.nextPage(
duration: Duration(milliseconds: 300), curve: Curves.linear),
child: Text('→'),
),
),
...Iterable<int>.generate(imgList.length).map(
(int pageIndex) => Flexible(
child: RaisedButton(
onPressed: () => basicSlider.animateToPage(pageIndex,
duration: Duration(milliseconds: 300),
curve: Curves.linear),
child: Text("$pageIndex"),
),
),
),
]),
]);
}
//Pages covers entire carousel
final CarouselSlider coverScreenExample = CarouselSlider(
viewportFraction: 1.0,
aspectRatio: 2.0,
autoPlay: false,
enlargeCenterPage: false,
items: map<Widget>(
imgList,
(index, i) {
return Container(
decoration: BoxDecoration(
image: DecorationImage(image: NetworkImage(i), fit: BoxFit.cover),
),
);
},
),
);
//User input pauses carousels automatic playback
final CarouselSlider touchDetectionDemo = CarouselSlider(
viewportFraction: 0.9,
aspectRatio: 2.0,
autoPlay: true,
enlargeCenterPage: true,
pauseAutoPlayOnTouch: Duration(seconds: 3),
items: imgList.map(
(url) {
return Container(
margin: EdgeInsets.all(5.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(5.0)),
child: Image.network(
url,
fit: BoxFit.cover,
width: 1000.0,
),
),
);
},
).toList(),
);
//Non-looping manual Carousel
final CarouselSlider nonLoopingCarousel = CarouselSlider(
items: child,
scrollPhysics: BouncingScrollPhysics(),
enableInfiniteScroll: false,
autoPlay: false,
enlargeCenterPage: true,
viewportFraction: 0.9,
aspectRatio: 2.0,
);
//Vertical carousel
final CarouselSlider verticalScrollCarousel = CarouselSlider(
scrollDirection: Axis.vertical,
aspectRatio: 2.0,
autoPlay: true,
enlargeCenterPage: true,
viewportFraction: 0.9,
pauseAutoPlayOnTouch: Duration(seconds: 3),
items: imgList.map(
(url) {
return Container(
margin: EdgeInsets.all(5.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(5.0)),
child: Image.network(
url,
fit: BoxFit.cover,
width: 1000.0,
),
),
);
},
).toList(),
);
//create full screen Carousel with context
CarouselSlider getFullScreenCarousel(BuildContext mediaContext) {
return CarouselSlider(
autoPlay: true,
viewportFraction: 1.0,
aspectRatio: MediaQuery.of(mediaContext).size.aspectRatio,
items: imgList.map(
(url) {
return Container(
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(0.0)),
child: Image.network(
url,
fit: BoxFit.cover,
width: 1000.0,
),
),
);
},
).toList(),
);
}
CarouselSlider getOnDemandCarousel(BuildContext mediaContext) {
return CarouselSlider.builder(
scrollDirection: Axis.horizontal,
itemCount: 15,
itemBuilder: (BuildContext context, int itemIndex) => Container(
child: Text(itemIndex.toString()),
),
);
}
return MaterialApp(
title: 'demo',
home: Scaffold(
appBar: AppBar(title: Text('Carousel slider demo')),
body: ListView(
children: <Widget>[
/*Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Manuell Carousel'),
manualCarouselDemo,
])),*/
Padding(
padding: EdgeInsets.symmetric(vertical: 0.0),
child: Column(children: [
//Text('Auto Playing Carousel'),
autoPlayDemo,
])),
/*Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Button Controlled Carousel'),
buttonDemo(),
])),
Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Full Screen Carousel'),
coverScreenExample,
])),
Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Carousel With Indecator'),
CarouselWithIndicator(),
])),
Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Pause When Touched Carousel'),
touchDetectionDemo,
])),
Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('No infinity scroll carousel'),
nonLoopingCarousel,
])),
Padding(
padding: EdgeInsets.symmetric(vertical: 15.0),
child: Column(children: [
Text('Vertical scroll carousel'),
verticalScrollCarousel,
])),
Padding(
padding: EdgeInsets.only(top: 15.0),
//Builder needed to provide mediaQuery context from material app
child: Builder(builder: (context) {
return Column(children: [
Text('Full screen carousel'),
getFullScreenCarousel(context),
]);
})),
Padding(
padding: EdgeInsets.only(top: 15.0),
child: Builder(builder: (context) {
return Column(children: [
Text('On demand item carousel'),
getOnDemandCarousel(context),
]);
})),*/
],
),
),
);
}
}
import'package:carousel_slider/carousel_slider.dart'；
进口“包装：颤振/材料.省道”；
类有效载荷{
字符串标题；
字符串imageUrl；
有效负载（{this.title，this.imageUrl}）；
}
最终列表有效负载列表=[
有效载荷(
标题：“标题1”，
imageUrl:'https://via.placeholder.com/250x200',
),
有效载荷(
标题：“标题2”，
imageUrl:'https://via.placeholder.com/250x200',
),
有效载荷(
标题：“标题3”，
imageUrl:'https://via.placeholder.com/250x200',
),
];
最终列表imgList=[
'https://images.unsplash.com/photo-1520342868574-5fa3804e551c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=6FF92CAFFCD63681A35134A6770ED3B&auto=format&fit=crop&w=1951&q=80'，
'https://images.unsplash.com/photo-1522205408450-add114ad53fe?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=368F45B088AEB0B7B08E3A1084D3EDE&auto=format&fit=crop&w=1950&q=80'，
'https://images.unsplash.com/photo-1519125323398-675f0ddb6308?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=94a1e718d89ca60a6337a6008341ca50&auto=format&fit=crop&w=1950&q=80'，
'https://images.unsplash.com/photo-1523205771623-e0faa4d2813d?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=89719a0d55dd05e2deae4120227e6efc&auto=format&fit=crop&w=1953&q=80'，
'https://images.unsplash.com/photo-1508704019882-f9cf40e475b4?ixlib=rb-0.3.5&ixid=eyjhcbfawqiojeymdd9&s=8c6e5e3aba713b17aa1fe71ab4f0ae5b&auto=format&fit=crop&w=1352&q=80'，
'https://images.unsplash.com/photo-1519985176271-adb1088fa94c?ixlib=rb-0.3.5&ixid=eyjhcbfawqiojeymdd9&s=a0c8d632e977f94e5d312d9893258f59&auto=format&fit=crop&w=1355&q=80'
];
void main（）=>runApp（CarouselDemo（））；
最终小部件占位符=容器（颜色：Colors.grey）；
最终列表子项=映射(
英格利特，
（索引一）{
返回容器(
边距：所有边缘集（5.0），
孩子：ClipRRect(
borderRadius:borderRadius.all（半径.圆形（5.0）），
子：堆栈（子：[
图像.网络（i，尺寸：BoxFit.cover，宽度：1000.0），
定位(
底部：0.0，
左：0.0，
右：0.0，
子：容器(
装饰：盒子装饰(
梯度：线性梯度(
颜色：[
颜色。来自argb（200,0,0,0），
Color.fromARGB（0,0,0,0）
],
开始：对齐.bottomCenter，
结束：对齐。上止点，
),
),
填充：边缘组。对称（垂直：10.0，水平：20.0），
子：文本(
'编号$索引图像'，
样式：TextStyle(
颜色：颜色，白色，
字体大小：20.0，
fontWeight:fontWeight.bold，
),
),
),
),
]),
),
);
},
).toList（）；
列表映射（列表、函数处理程序）{
列表结果=[]；
对于（变量i=0；i_CarouselWithIndicatorState（）；
}
类_carouselwithindicator状态扩展状态{
int _电流=0；
@凌驾
小部件构建（构建上下文）{
返回列（子项：[
旋转滑翔机(
项目：儿童，
自动播放：对，
放大中心页：正确，
aspectRatio:2.0，
onPageChanged:（索引）{
设置状态（）{
_电流=指数；
});
},
),
划船(
mainAxisAlignment:mainAxisAlignment.center，
儿童：地图(
英格利特，
（索引，url）{
返回容器(
宽度：8.0，
身高：8.0，
边缘：边缘组。对称（垂直：10.0，水平：2.0），
装饰：盒子装饰(
形状：BoxShape.circle，
颜色：_当前==索引
？颜色。来自RGBO（0,0,0,0.9）
：Color.fromRGBO（0,0,0,0.4）），
);
},
),
),
]);
}
}
类CarouselDemo扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
//手动旋转木马
最终转盘滑翔机手册转盘滑翔机=转盘滑翔机(
项目：儿童，
自动播放：错误，
放大中心页：正确，
视口分数：0.9，
aspectRatio:2.0，