Pie Chart

This Flutter package provides a Pie Chart Widget with cool animation.

More discussions on Discord: https://discord.gg/7byeCn7MGF

💻 Try LIVE Demo

Live Demo: https://apgapg.github.io/pie_chart/

💻 Installation

In the dependencies: section of your pubspec.yaml, add the following line:

dependencies:
  pie_chart: <latest version>

❔ Usage

Import this class

import 'package:pie_chart/pie_chart.dart';

Usage is simple. Pie Chart is a widget and it just need a Map<String,double> as its data input.

Map<String, double> dataMap = {
    "Flutter": 5,
    "React": 3,
    "Xamarin": 2,
    "Ionic": 2,
  };

- Simple Implementation

PieChart(dataMap: dataMap)

- Full Implementation

PieChart(
      dataMap: dataMap,
      animationDuration: Duration(milliseconds: 800),
      chartLegendSpacing: 32,
      chartRadius: MediaQuery.of(context).size.width / 3.2,
      colorList: colorList,
      initialAngleInDegree: 0,
      chartType: ChartType.ring,
      ringStrokeWidth: 32,
      centerText: "HYBRID",
      legendOptions: LegendOptions(
        showLegendsInRow: false,
        legendPosition: LegendPosition.right,
        showLegends: true,
        legendShape: _BoxShape.circle,
        legendTextStyle: TextStyle(
          fontWeight: FontWeight.bold,
        ),
      ),
      chartValuesOptions: ChartValuesOptions(
        showChartValueBackground: true,
        showChartValues: true,
        showChartValuesInPercentage: false,
        showChartValuesOutside: false,
        decimalPlaces: 1,
      ),
      // gradientList: ---To add gradient colors---
      // emptyColorGradient: ---Empty Color gradient---
    )

Control decimal places 'decimalPlaces'

chartValuesOptions: ChartValuesOptions(
  decimalPlaces: 1,
),

Change legend position with 'legendPosition'

Change Chart shape to ring

chartType: ChartType.ring,

chartType: ChartType.ring,
showChartValuesOutside: true,

Gradient Colors

Pie Chart supports gradient as colors. Just pass gradientList instead of colorList to add gradient to chart colors.

final gradientList = <List<Color>>[
  [
    Color.fromRGBO(223, 250, 92, 1),
    Color.fromRGBO(129, 250, 112, 1),
  ],
  [
    Color.fromRGBO(129, 182, 205, 1),
    Color.fromRGBO(91, 253, 199, 1),
  ],
  [
    Color.fromRGBO(175, 63, 62, 1.0),
    Color.fromRGBO(254, 154, 92, 1),
  ]
];

// Pass gradient to PieChart
gradientList: gradientList,
emptyColorGradient: [
 Color(0xff6c5ce7),
 Colors.blue,
],

Base Chart Color

Add a base pie-chart color via:

baseChartColor: Colors.grey

Full code:

class HomePage2 extends StatelessWidget {
  HomePage2({Key? key}) : super(key: key);

  final dataMap = <String, double>{
    "Flutter": 5,
  };

  final colorList = <Color>[
    Colors.greenAccent,
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Pie Chart 1"),
      ),
      body: Container(
        padding: EdgeInsets.symmetric(horizontal: 16),
        child: PieChart(
          dataMap: dataMap,
          chartType: ChartType.ring,
          baseChartColor: Colors.grey[300]!,
          colorList: colorList,
        ),
      ),
    );
  }
}

Total Value

To show chart arcs based on your total value, add totalValue option.

class HomePage2 extends StatelessWidget {
  HomePage2({Key? key}) : super(key: key);

  final dataMap = <String, double>{
    "Flutter": 5,
  };

  final colorList = <Color>[
    Colors.greenAccent,
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Pie Chart 1"),
      ),
      body: Container(
        padding: EdgeInsets.symmetric(horizontal: 16),
        child: PieChart(
          dataMap: dataMap,
          chartType: ChartType.ring,
          baseChartColor: Colors.grey[50]!.withOpacity(0.15),
          colorList: colorList,
          chartValuesOptions: ChartValuesOptions(
            showChartValuesInPercentage: true,
          ),
          totalValue: 20,
        ),
      ),
    );
  }
}

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