Flutter图表绘制插件ssun_chart的使用

Flutter图表绘制插件ssun_chart的使用

ssun_chart 是一个用于在 Flutter 应用程序中绘制图表的库。你可以通过以下示例了解如何使用它。

安装

首先，在你的 pubspec.yaml 文件中添加依赖：

dependencies:
  ssun_chart: ^0.1.0

然后运行 flutter pub get 命令来安装依赖。

示例代码

线形图 (Line Chart)

线形图是一种常用的图表类型，用于展示数据随时间的变化趋势。

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Line Chart 示例')),
        body: Center(
          child: LineChartExample(),
        ),
      ),
    );
  }
}

class LineChartExample extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: LineChart(
        data: [
          LineChartData(
            title: "线形图",
            dataEntries: [
              DataEntry(x: 0, y: 10),
              DataEntry(x: 1, y: 20),
              DataEntry(x: 2, y: 30),
              DataEntry(x: 3, y: 25),
              DataEntry(x: 4, y: 22),
              DataEntry(x: 5, y: 18),
              DataEntry(x: 6, y: 15),
            ],
            color: Colors.blue,
            lineStyle: LineStyle.solid,
            pointStyle: PointStyle.circle,
          ),
        ],
      ),
    );
  }
}

柱状图 (Bar Chart)

柱状图用于比较不同类别的数据。

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Bar Chart 示例')),
        body: Center(
          child: BarChartExample(),
        ),
      ),
    );
  }
}

class BarChartExample extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: BarChart(
        data: [
          BarChartData(
            title: "柱状图",
            dataEntries: [
              DataEntry(x: 0, y: 10),
              DataEntry(x: 1, y: 20),
              DataEntry(x: 2, y: 30),
              DataEntry(x: 3, y: 25),
              DataEntry(x: 4, y: 22),
              DataEntry(x: 5, y: 18),
              DataEntry(x: 6, y: 15),
            ],
            color: Colors.red,
          ),
        ],
      ),
    );
  }
}

饼图 (Pie Chart)

饼图用于展示各类别数据的比例关系。

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Pie Chart 示例')),
        body: Center(
          child: PieChartExample(),
        ),
      ),
    );
  }
}

class PieChartExample extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: PieChart(
        data: [
          PieChartData(
            title: "饼图",
            dataEntries: [
              DataEntry(x: 0, y: 10),
              DataEntry(x: 1, y: 20),
              DataEntry(x: 2, y: 30),
              DataEntry(x: 3, y: 25),
              DataEntry(x: 4, y: 22),
              DataEntry(x: 5, y: 18),
              DataEntry(x: 6, y: 15),
            ],
            color: Colors.green,
          ),
        ],
      ),
    );
  }
}

雷达图 (Radar Chart)

雷达图也称为蜘蛛网图，用于展示多维度的数据对比。

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Radar Chart 示例')),
        body: Center(
          child: RadarChartExample(),
        ),
      ),
    );
  }
}

class RadarChartExample extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: RadarChart(
        data: [
          RadarChartData(
            title: "雷达图",
            dataEntries: [
              DataEntry(x: 0, y: 10),
              DataEntry(x: 1, y: 20),
              DataEntry(x: 2, y: 30),
              DataEntry(x: 3, y: 25),
              DataEntry(x: 4, y: 22),
              DataEntry(x: 5, y: 18),
              DataEntry(x: 6, y: 15),
            ],
            color: Colors.orange,
          ),
        ],
      ),
    );
  }
}