搜索有些教程引入的依赖版本好像不对下面是官网的地址 https://pub.dev/packages/charts_flutter/versions

再参考https://pub.dev/packages/charts_flutter/install 引入依赖

dependencies:
  charts_flutter: ^0.12.0

然后再引入包

import 'package:charts_flutter/flutter.dart' as charts;

报表的容器组件:

 @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        child: ListView(
          children: <Widget>[
            Container(
              height: 300,
              child: getBar(),
            ),
            Container(
              height: 300,
              child: getLine(),
            )
          ],
        ),
      ),
    );
  }

线图的数据组装:

Widget getLine() {
    List<Linesales> dataLine = [
      new Linesales(new DateTime(2019, 7, 2), 33),
      new Linesales(new DateTime(2019, 7, 3), 55),
      new Linesales(new DateTime(2019, 7, 4), 22),
      new Linesales(new DateTime(2019, 7, 5), 88),
      new Linesales(new DateTime(2019, 7, 6), 123),
      new Linesales(new DateTime(2019, 7, 7), 75),
    ];

    var seriesLine = [
      charts.Series<Linesales, DateTime>(
        data: dataLine,
        domainFn: (Linesales lines, _) => lines.time,
        measureFn: (Linesales lines, _) => lines.sale,
        id: "Lines",
      )
    ];
    //是TimeSeriesChart，而不是LineChart,因为x轴是DataTime类
    Widget line = charts.TimeSeriesChart(seriesLine);
    //line = charts.LineChart(series);
    return line;
  }

条状图组装:

Widget getBar() {
    List<Barsales> dataBar = [
      new Barsales("1", 20),
      new Barsales("2", 50),
      new Barsales("3", 20),
      new Barsales("4", 80),
      new Barsales("5", 120),
      new Barsales("6", 30),
    ];

    var seriesBar = [
      charts.Series(
        data: dataBar,
        domainFn: (Barsales sales, _) => sales.day,
        measureFn: (Barsales sales, _) => sales.sale,
        id: "Sales",
      )
    ];
    return charts.BarChart(seriesBar);
  }

数据实体:

class Barsales {
  String day;
  int sale;
  Barsales(this.day, this.sale);
}

class Linesales {
  DateTime time;
  int sale;
  Linesales(this.time, this.sale);
}