【Flutter】堆叠式卡轮播
作为移动应用程序开发人员，我们有时需要制作滑动的，动画的背景图像轮播。但是，有时候，我们需要制作一张滑动卡片传送带，其中包含一些具有各种背景颜色，图像或渐变的信息。
在在本博客中，我们将探讨「Flutter中」 的**堆叠式卡轮播。**我们还将实现一个演示程序，并学习在您的flutter应用程序中使用「stacked_card_carousel」包创建一个带有垂直轮播的堆叠卡。
pub地址：https://pub.dev/packages/stacked_card_carousel
用于创建带有堆叠卡片的垂直轮播的小部件。下面的演示视频显示了如何在Flutter中创建带有垂直旋转木马的堆叠卡。它显示了在您的flutter应用程序中如何使用「stacked_card_carousel」软件包来使用堆叠式卡轮播。它显示了垂直圆盘传送带滑动卡的列表，所有卡向上滑动并堆叠，称为堆叠式卡传送带。它会显示在您的设备上。
堆叠式卡轮播的一些属性：
**items：**这些属性表示卡小部件的列表。 **initialOffset：**这些属性表示卡的初始垂直顶部偏移。 **spaceBetweenItems：**这些属性表示项目之间的垂直空间。值从第一个项目的顶部开始。 **applyTextScaleFactor：**这些属性表示如果设置为true，则根据文本比例因子线性扩展空间和位置。缩小比例被省略。
使用
添加依赖
stacked_card_carousel: ^0.0.2+1引入
import 'package:stacked_card_carousel/stacked_card_carousel.dart';运行命令：「flutter packages get」
启用「AndriodX」
org.gradle.jvmargs=-Xmx1536M
android.enableR8=true
android.useAndroidX=true
android.enableJetifier=true
在libs目录下创建 「style_card.dart」 文件
final Image image;
final String title;
final String description;
const StyleCard({
Key key,
this.image,
this.title,
this.description
}) : super(key: key);
在卡片内，我们将添加一个height属性并添加一个列小部件。在列小部件中，我们将为图像添加一个容器，添加标题和描述。然后在stacked_card_demo页面上调用该卡。
Card(
elevation: 4.0,
child: Padding(
padding: const EdgeInsets.all(12.0),
child: Column(
children: <Widget>[
Container(
width: MediaQuery.of(context).size.width*0.7,
height: MediaQuery.of(context).size.width*0.65,
child: image,
),
SizedBox(height: 5,),
Text(
title,
style: TextStyle(color: Colors.pinkAccent,fontSize: 22,fontWeight: FontWeight.bold),
),
SizedBox(height: 10,),
Text(
description,
style: TextStyle(color: Colors.black),textAlign: TextAlign.center,
),
],
),
),
);
创建 「stacked_card_demo.dart」文件
StackedCardCarousel(
initialOffset: 40,
spaceBetweenItems:400 ,
items: styleCards,
),
添加「initialOffset」表示卡片的初始垂直顶部偏移量，「spaceBetweenItems」表示项目之间的垂直间隔。值从第一个项目的顶部开始。选择一个与您的卡大小相关的值。最后，我们将添加一个表示卡小部件列表的「项目」。
创建一个styleCards列表，并在其中添加一个StyleCard（）类。
final List<Widget> styleCards = [
StyleCard(
image: Image.asset("assets/deepak.jpg"),
title: "Team Leader",
description: "It play extremely important role in motivating\nour team and ensuring their success.",
),
StyleCard(
image: Image.asset("assets/yashwant.png"),
title: "Secondary Team Leader ",
description: "It provides guidance, instruction, direction to\nour team. Handsome member in our team.",
),
StyleCard(
image: Image.asset("assets/akshay.png"),
title: "Software Engineer",
description: "Team player, hard worker, expert in\n both andriod and flutter",
),
StyleCard(
image: Image.asset("assets/aditya.png"),
title: "Software Engineer",
description: "Smart, quick learner, and very\ndedicated to the work.",
),
StyleCard(
image: Image.asset("assets/naveen.png"),
title: "Associate Software Engineer",
description: "Flutter developer, keen learner\n very supporting. Bodyguard of our team",
),
StyleCard(
image: Image.asset("assets/mohit.png"),
title: "Associate Software Engineer",
description: "Responsible team member,situation handler,\nand a sharp learner with flutter and blogs.",
),
StyleCard(
image: Image.asset("assets/shaiq.png"),
title: "Associate Software Engineer",
description: "Flutter developer with a passion for learning,\nstar blogger, punctual and \na handsome teammate.",
),
StyleCard(
image: Image.asset("assets/rakhi.png"),
title: "Associate Software Engineer",
description: "Newest team member, with high passion for\nlearning very sharp,and dedicated.Need more\ntime to know about you.",
),
];
我们将创建八种样式的卡片，并在其中添加图片，标题和说明。将所有数据添加到**StackedCardCarousel（）上。**当 该 代码 运行，你会看到卡的列表。当用户仅以垂直轮播格式向上滑动时，所有卡都将重叠并堆叠到另一个称为堆叠卡轮播中；当用户以垂直格式向下滑动所有向上的卡时，所有卡都将回到原始位置。当我们运行应用程序时，我们应该获得屏幕的输出，如屏幕下方的截图所示。
完整实现
import 'package:flutter/material.dart';
import 'package:flutter_stacked_card_carousel/style_card.dart';
import 'package:stacked_card_carousel/stacked_card_carousel.dart';
class StackedCardDemo extends StatefulWidget {
@override
_StackedCardDemoState createState() => _StackedCardDemoState();
}
class _StackedCardDemoState extends State<StackedCardDemo> {
final List<Widget> styleCards = [
StyleCard(
image: Image.asset("assets/deepak.jpg"),
title: "Team Leader",
description: "It play extremely important role in motivating\nour team and ensuring their success.",
),
StyleCard(
image: Image.asset("assets/yashwant.png"),
title: "Secondary Team Leader ",
description: "It provides guidance, instruction, direction to\nour team. Handsome member in our team.",
),
StyleCard(
image: Image.asset("assets/akshay.png"),
title: "Software Engineer",
description: "Team player, hard worker, expert in\n both andriod and flutter",
),
StyleCard(
image: Image.asset("assets/aditya.png"),
title: "Software Engineer",
description: "Smart, quick learner, and very\ndedicated to the work.",
),
StyleCard(
image: Image.asset("assets/naveen.png"),
title: "Associate Software Engineer",
description: "Flutter developer, keen learner\n very supporting. Bodyguard of our team",
),
StyleCard(
image: Image.asset("assets/mohit.png"),
title: "Associate Software Engineer",
description: "Responsible team member,situation handler,\nand a sharp learner with flutter and blogs.",
),
StyleCard(
image: Image.asset("assets/shaiq.png"),
title: "Associate Software Engineer",
description: "Flutter developer with a passion for learning,\nstar blogger, punctual and \na handsome teammate.",
),
StyleCard(
image: Image.asset("assets/rakhi.png"),
title: "Associate Software Engineer",
description: "Newest team member, with high passion for\nlearning very sharp,and dedicated.Need more\ntime to know about you.",
),
];
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
automaticallyImplyLeading: false,
title: Text('Stacked Card Carousel Demo'),
),
body: StackedCardCarousel(
initialOffset: 40,
spaceBetweenItems:400 ,
items: styleCards,
),
);
}
}
原文地址：https://medium.com/flutterdevs/stacked-card-carousel-in-flutter-9bbb3b89ca81