Flutter滑动卡片堆叠插件swipeable_card_stack的使用

swipeable_card_stack 是一个类似 Tinder 的滑动卡片包。你可以将自定义的小部件添加到卡片堆中，并接收四个方向（左、右、上、下）的事件。你还可以为每个方向定义自己的业务逻辑。

文档

安装

在 pubspec.yaml 文件中添加 swipeable_card_stack 依赖：

dependencies:
  flutter:
    sdk: flutter

  # 添加以下行
  swipeable_card_stack: <latest version>

在应用中添加

使用包提供的 SwipeableCardsSection 小部件：

import 'package:flutter/material.dart';
import 'package:swipeable_card_stack/swipeable_card_stack.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class CardView extends StatelessWidget {
  final String text;
  CardView({required this.text});

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text(text),
    );
  }
}

class _MyHomePageState extends State<MyHomePage> {
  int counter = 4;

  @override
  Widget build(BuildContext context) {
    // 创建一个 SwipeableCardSectionController
    SwipeableCardSectionController _cardController = SwipeableCardSectionController();

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          SwipeableCardsSection(
            cardController: _cardController,
            context: context,
            // 添加前3张卡片
            items: [
              CardView(text: "First card"),
              CardView(text: "Second card"),
              CardView(text: "Third card"),
            ],
            onCardSwiped: (dir, index, widget) {
              // 添加下一张卡片
              if (counter <= 20) {
                _cardController.addItem(CardView(text: "Card $counter"));
                counter++;
              }

              if (dir == Direction.left) {
                print('onDisliked ${(widget as CardView).text} $index');
              } else if (dir == Direction.right) {
                print('onLiked ${(widget as CardView).text} $index');
              } else if (dir == Direction.up) {
                print('onUp ${(widget as CardView).text} $index');
              } else if (dir == Direction.down) {
                print('onDown ${(widget as CardView).text} $index');
              }
            },
            enableSwipeUp: true,
            enableSwipeDown: true,
          ),
          Container(
            margin: EdgeInsets.symmetric(vertical: 20.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: [
                FloatingActionButton(
                  child: Icon(Icons.chevron_left),
                  onPressed: () => _cardController.triggerSwipeLeft(),
                ),
                FloatingActionButton(
                  child: Icon(Icons.chevron_right),
                  onPressed: () => _cardController.triggerSwipeRight(),
                ),
                FloatingActionButton(
                  child: Icon(Icons.arrow_upward),
                  onPressed: () => _cardController.triggerSwipeUp(),
                ),
                FloatingActionButton(
                  child: Icon(Icons.arrow_downward),
                  onPressed: () => _cardController.triggerSwipeDown(),
                ),
              ],
            ),
          )
        ],
      ),
    );
  }
}

作者

CodeToArt Technology

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这个示例展示了如何使用 swipeable_card_stack 插件来创建一个滑动卡片堆叠效果的应用。你可以通过手势或按钮触发卡片的滑动，并根据滑动的方向执行不同的操作。希望这个示例对你有所帮助！