Flutter折叠面板插件si_accordion的使用

发布于 1周前 作者 htzhanglong 来自 Flutter

Flutter折叠面板插件si_accordion的使用

插件介绍

si_accordion 是一个为Flutter开发者编写的折叠面板插件，使用Dart编写。 它可以帮助你创建可折叠的面板, 使界面更加整洁和易于管理。

示例代码

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

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Accordion Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const AccordionDemoView(
        title: 'Accordion Demo Page',
      ),
    );
  }
}

class AccordionDemoView extends StatelessWidget {
  const AccordionDemoView({
    Key? key,
    required this.title,
  }) : super(key: key);
  final String title;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      drawer: Drawer(
        child: SafeArea(
          child: SIAccordion(
            children: [
              SIAccordionCell(title: "This Demo"),
              SIAccordionCell(
                title: "User info",
                onTap: () => debugPrint("Open user info view."),
              ),
              SIAccordionCell<LanguageEnum>(
                title: "Language",
                childMap: {
                  LanguageEnum.en: "English",
                  LanguageEnum.tw: "繁體中文",
                  LanguageEnum.cn: "简体中文",
                },
                initSelectKey: LanguageEnum.en,
                onTapCallBackKey: (mapKey) => debugPrint("$mapKey"),
              ),
              SIAccordionCell<String>(
                title: "Appearance",
                childMap: {
                  "night": "Night",
                  "light": "Light",
                },
                initSelectKey: "light",
                onTapCallBackKey: (mapKey) => debugPrint(mapKey),
              ),
              SIAccordionCell<bool>(
                title: "Remind",
                childMap: {
                  false: "OFF",
                  true: "ON",
                },
                initSelectKey: true,
                onTapCallBackKey: (mapKey) => debugPrint("$mapKey"),
              ),
              SIAccordionCell(
                title: "About us",
                onTap: () => debugPrint("Open about us view"),
              ),
            ],
          ),
        ),
      ),
      appBar: AppBar(
        title: Text(title),
      ),
      body: SIAccordion(
        titleStyle: SIAccordionTitleStyle(
          backgroundColor: Colors.black12,
        ),
        cellStyle: SIAccordionCellStyle(
          backgroundColor: Colors.black12,
          selectedBackgroundColor: Colors.black26,
          borderColor: Colors.transparent,
        ),
        spacing: 5,
        children: [
          SIAccordionCell(title: "This Demo"),
          SIAccordionCell(
            title: "User info",
            onTap: () => debugPrint("Open user info view."),
          ),
          SIAccordionCell<LanguageEnum>(
            title: "Language",
            childMap: {
              LanguageEnum.en: "English",
              LanguageEnum.tw: "繁體中文",
              LanguageEnum.cn: "简体中文",
            },
            initSelectKey: LanguageEnum.en,
            onTapCallBackKey: (mapKey) => debugPrint("$mapKey"),
            titleStyle: SIAccordionTitleStyle(
              backgroundColor: Colors.yellow.withOpacity(0.5),
            ),
            cellStyle: SIAccordionCellStyle(
              backgroundColor: Colors.yellow.withOpacity(0.2),
              selectedBackgroundColor: Colors.red.withOpacity(0.3),
            ),
          ),
          SIAccordionCell<String>(
            title: "Appearance",
            childMap: {
              "night": "Night",
              "light": "Light",
            },
            initSelectKey: "light",
            onTapCallBackKey: (mapKey) => debugPrint(mapKey),
          ),
          SIAccordionCell<bool>(
            title: "Remind",
            childMap: {
              false: "OFF",
              true: "ON",
            },
            initSelectKey: true,
            onTapCallBackKey: ( (mapKey) => debugPrint("$mapKey"),
            titleStyle: SIAccordionTitleStyle(
              backgroundColor: Colors.deepPurple.withOpacity(0.2),
            ),
          ),
          SIAccordionCell(
            title: "About us",
            onTap: () => debugPrint("Open about us view"),
          ),
          SIAccordionCell(
            title: "Explanatory text",
            child: Container(
              color: Colors.cyanAccent.withOpacity(0.2),
              padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
              child: const Text('This is a large string of explanatory text, just to show the accordion widget, expand to display the description.'),
            ),
            titleStyle: SIAccordionTitleStyle(
              backgroundColor: Colors.cyanAccent.withOpacity(0.2),
            ),
          ),
        ],
      ),
    );
  }
}

enum LanguageEnum { en, cn, tw }

更多关于Flutter折叠面板插件si_accordion的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html

Harmonyos Next教程
1 回复

更多关于Flutter折叠面板插件si_accordion的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


当然，以下是如何在Flutter中使用si_accordion插件来创建折叠面板的一个代码示例。si_accordion是一个流行的Flutter插件，用于创建可折叠的面板或列表项。

首先，你需要在你的pubspec.yaml文件中添加si_accordion依赖项：

dependencies:
  flutter:
    sdk: flutter
  si_accordion: ^x.y.z  # 请替换为最新版本号

然后运行flutter pub get来安装依赖项。

以下是一个完整的Flutter应用示例，展示了如何使用si_accordion插件：

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

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

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

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> with SingleTickerProviderStateMixin {
  bool isExpanded = false;

  void _toggleAccordion() {
    setState(() {
      isExpanded = !isExpanded;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Accordion Example'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Accordion(
              isExpanded: isExpanded,
              header: Text(
                'Click to Expand/Collapse',
                style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
              ),
              body: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: <Widget>[
                  Text('This is the first line of the expanded content.'),
                  Text('This is the second line of the expanded content.'),
                  Text('This is the third line of the expanded content.'),
                ],
              ),
              onToggle: (expanded) {
                _toggleAccordion();
              },
              duration: 300,  // Duration for the animation
              icon: Icon(
                isExpanded ? Icons.expand_more : Icons.chevron_right,
                color: Colors.blue,
              ),
            ),
          ],
        ),
      ),
    );
  }
}

代码说明：

  1. 依赖项：在pubspec.yaml中添加si_accordion依赖项。
  2. 导入包：在main.dart文件中导入si_accordion包。
  3. 主应用：创建一个MyApp类，它是应用的根组件。
  4. 首页：MyHomePage是一个有状态的组件，包含一个Accordion组件。
  5. 状态管理：使用isExpanded布尔值来跟踪Accordion的展开/折叠状态。
  6. 切换逻辑：_toggleAccordion方法用于切换Accordion的状态。
  7. Accordion组件：Accordion组件包括一个标题（header），一个内容（body），一个用于切换的图标（icon），以及一个onToggle回调来处理展开/折叠事件。

你可以根据需要修改内容、图标、动画时长等。这个示例提供了一个基础的实现，你可以根据具体需求进行扩展和定制。

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