Flutter表格展示插件dx_table的使用

Flutter表格展示插件dx_table的使用

在本文中，我们将详细介绍如何在Flutter应用中使用dx_table插件来展示表格数据。dx_table插件提供了强大的表格展示功能，并且支持排序等高级特性。

示例代码

以下是一个完整的示例代码，展示了如何使用dx_table插件来展示表格数据。

import 'dart:math';

import 'package:dx_table/dx_table.dart';
import 'package:example/data/table_data.dart';
import 'package:flutter/material.dart';

import 'data/player_data_model.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatefulWidget {
  const MainApp({super.key});

  @override
  State<MainApp> createState() => _MainAppState();
}

class _MainAppState extends State<MainApp> {
  final DxTableController dxTableController = DxTableController();
  late List<PlayerDataModel> players;

  @override
  void initState() {
    players = TableData.players;
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    return MaterialApp(
      home: Scaffold(
        body: SizedBox(
          height: size.height,
          width: size.width,
          child: DxTable(
            tableWidth: size.width,
            height: size.height,
            animationDuration: const Duration(microseconds: 0),
            header: DxTableHeader(
              titleAlignment: Alignment.centerLeft,
              backgroundColor: Colors.deepPurple,
              titles: TableData.headerTitles.map((e) => _headerElement(e)).toList(),
            ),
            rows: TableData.players.map((e) => dxTableRow(e)).toList(),
            dxTableController: dxTableController,
            onClick: (index) {
              dxTableController.select(index, refreshState: true);
              print(index);
            },
          ),
        ),
      ),
    );
  }

  DxHeaderElement _headerElement(String title) {
    return DxHeaderElement(
      align: Alignment.centerLeft,
      sortingMechanism: DxTableSortMechanism<String>(
        comparator: (a, b) => a.compareTo(b) < 0,
      ),
      builder: (context, sortState, index) {
        return Row(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            Text(
              title,
              style: const TextStyle(
                color: Colors.white,
              ),
            ),
            const SizedBox(width: 5),
            _sortStateBasedArrow(sortState, index)
          ],
        );
      },
    );
  }

  Widget _sortStateBasedArrow(DxTableSortState sortState, int index) {
    switch (sortState) {
      case DxTableSortState.unsorted:
        return InkWell(
          onTap: () => dxTableController.sort(index),
          child: const SizedBox(
            height: 10,
            width: 10,
            child: RotatedBox(
              quarterTurns: 3,
              child: Icon(
                Icons.arrow_back_ios,
                size: 10,
                color: Colors.grey,
              ),
            ),
          ),
        );
      case DxTableSortState.sorted:
        return InkWell(
          onTap: () => dxTableController.sort(index),
          child: const SizedBox(
            height: 10,
            width: 10,
            child: RotatedBox(
              quarterTurns: 3,
              child: Icon(
                Icons.arrow_back_ios,
                color: Colors.white,
                size: 10,
              ),
            ),
          ),
        );
      case DxTableSortState.reversed:
        return InkWell(
          onTap: () => dxTableController.clearSort(),
          child: const SizedBox(
            height: 10,
            width: 10,
            child: RotatedBox(
              quarterTurns: 1,
              child: Icon(
                Icons.arrow_back_ios,
                color: Colors.white,
                size: 10,
              ),
            ),
          ),
        );
    }
  }

  DxTableRow dxTableRow(PlayerDataModel playerDataModel) {
    return DxTableRow(
      backgroundColor: Colors.white,
      hoverColor: Colors.grey,
      selectedColor: Colors.grey,
      enableSelection: true,
      children: [
        _rowElement(playerDataModel.id.toString()),
        _rowElement(playerDataModel.name),
        _rowElement(playerDataModel.age.toString()),
        _rowElement(playerDataModel.nationality.toString()),
        _rowElement(playerDataModel.club.toString()),
        _rowElement(playerDataModel.position.toString()),
        _rowElement(playerDataModel.goalsScored.toString()),
        _rowElement(playerDataModel.assists.toString()),
      ],
    );
  }

  DxTableRowElement<dynamic> _rowElement(String value) {
    return DxTableRowElement<String>(
      sortElement: value,
      builder: (context, isSelected, isHovered, hoverValue, rowIndex) {
        return Text(
          value,
          style: TextStyle(
            color: isHovered ? Colors.white : Colors.black,
          ),
        );
      },
    );
  }
}

详细说明

1. 导入必要的包

首先，确保导入了dx_table和flutter相关的包：

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

2. 初始化数据

在initState方法中初始化表格数据：

@override
void initState() {
  players = TableData.players;
  super.initState();
}

3. 构建表格

在build方法中构建表格：

@override
Widget build(BuildContext context) {
  Size size = MediaQuery.of(context).size;
  return MaterialApp(
    home: Scaffold(
      body: SizedBox(
        height: size.height,
        width: size.width,
        child: DxTable(
          tableWidth: size.width,
          height: size.height,
          animationDuration: const Duration(microseconds: 0),
          header: DxTableHeader(
            titleAlignment: Alignment.centerLeft,
            backgroundColor: Colors.deepPurple,
            titles: TableData.headerTitles.map((e) => _headerElement(e)).toList(),
          ),
          rows: TableData.players.map((e) => dxTableRow(e)).toList(),
          dxTableController: dxTableController,
          onClick: (index) {
            dxTableController.select(index, refreshState: true);
            print(index);
          },
        ),
      ),
    ),
  );
}

4. 表头元素

定义表头元素：

DxHeaderElement _headerElement(String title) {
  return DxHeaderElement(
    align: Alignment.centerLeft,
    sortingMechanism: DxTableSortMechanism<String>(
      comparator: (a, b) => a.compareTo(b) < 0,
    ),
    builder: (context, sortState, index) {
      return Row(
        mainAxisAlignment: MainAxisAlignment.start,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          Text(
            title,
            style: const TextStyle(
              color: Colors.white,
            ),
          ),
          const SizedBox(width: 5),
          _sortStateBasedArrow(sortState, index)
        ],
      );
    },
  );
}

5. 排序图标

根据排序状态显示不同的排序图标：

Widget _sortStateBasedArrow(DxTableSortState sortState, int index) {
  switch (sortState) {
    case DxTableSortState.unsorted:
      return InkWell(
        onTap: () => dxTableController.sort(index),
        child: const SizedBox(
          height: 10,
          width: 10,
          child: RotatedBox(
            quarterTurns: 3,
            child: Icon(
              Icons.arrow_back_ios,
              size: 10,
              color: Colors.grey,
            ),
          ),
        ),
      );
    case DxTableSortState.sorted:
      return InkWell(
        onTap: () => dxTableController.sort(index),
        child: const SizedBox(
          height: 10,
          width: 10,
          child: RotatedBox(
            quarterTurns: 3,
            child: Icon(
              Icons.arrow_back_ios,
              color: Colors.white,
              size: 10,
            ),
          ),
        ),
      );
    case DxTableSortState.reversed:
      return InkWell(
        onTap: () => dxTableController.clearSort(),
        child: const SizedBox(
          height: 10,
          width: 10,
          child: RotatedBox(
            quarterTurns: 1,
            child: Icon(
              Icons.arrow_back_ios,
              color: Colors.white,
              size: 10,
            ),
          ),
        ),
      );
  }
}

6. 表格行

定义表格行：

DxTableRow dxTableRow(PlayerDataModel playerDataModel) {
  return DxTableRow(
    backgroundColor: Colors.white,
    hoverColor: Colors.grey,
    selectedColor: Colors.grey,
    enableSelection: true,
    children: [
      _rowElement(playerDataModel.id.toString()),
      _rowElement(playerDataModel.name),
      _rowElement(playerDataModel.age.toString()),
      _rowElement(playerDataModel.nationality.toString()),
      _rowElement(playerDataModel.club.toString()),
      _rowElement(playerDataModel.position.toString()),
      _rowElement(playerDataModel.goalsScored.toString()),
      _rowElement(playerDataModel.assists.toString()),
    ],
  );
}

7. 表格单元格

定义表格单元格：

DxTableRowElement<dynamic> _rowElement(String value) {
  return DxTableRowElement<String>(
    sortElement: value,
    builder: (context, isSelected, isHovered, hoverValue, rowIndex) {
      return Text(
        value,
        style: TextStyle(
          color: isHovered ? Colors.white : Colors.black,
        ),
      );
    },
  );
}

更多关于Flutter表格展示插件dx_table的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter表格展示插件dx_table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，以下是一个关于如何在Flutter中使用dx_table插件来展示表格的示例代码。dx_table是一个用于在Flutter应用中显示表格数据的插件。以下是一个简单的示例，展示了如何使用该插件来创建一个基本的表格。

首先，确保你已经在pubspec.yaml文件中添加了dx_table依赖项：

dependencies:
  flutter:
    sdk: flutter
  dx_table: ^最新版本号  # 请替换为当前最新版本号

然后运行flutter pub get来安装依赖项。

接下来是完整的Flutter应用代码示例：

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

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

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

class MyHomePage extends StatelessWidget {
  final List<Map<String, dynamic>> data = [
    {"name": "Alice", "age": 28, "city": "New York"},
    {"name": "Bob", "age": 24, "city": "Los Angeles"},
    {"name": "Charlie", "age": 30, "city": "Chicago"},
  ];

  final List<String> headers = ["Name", "Age", "City"];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('dx_table Example'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: DXTable(
          headerData: headers,
          sourceData: data,
          // 你可以在这里添加更多配置，比如排序、筛选等
          // 例如：sortable: true,
          //       searchable: true,
          //       searchPlaceholder: "Search...",
          //       onCellTapped: (row, col) {
          //         // 单元格点击事件处理
          //       },
        ),
      ),
    );
  }
}

在这个示例中：

  1. 我们定义了一个包含数据的List<Map<String, dynamic>>，每个Map代表表格的一行数据。
  2. headers列表包含了表格的列标题。
  3. 在MyHomePage的build方法中，我们使用DXTable组件来展示这些数据。DXTable组件接收两个主要参数：headerData（列标题）和sourceData（数据源）。

你可以根据需要进一步自定义DXTable的其他参数，比如是否允许排序（sortable）、是否允许搜索（searchable）以及单元格点击事件处理（onCellTapped）等。

这个示例展示了dx_table插件的基本用法，可以帮助你快速在Flutter应用中展示表格数据。如果你需要更多高级功能，请参考dx_table的官方文档和示例。

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