问我怎么用主飞镖运行图表？-颤振

EN

import './widgets/chart.dart';

void main() {
  runApp(
    new MaterialApp(
      home: PointsLineChart(),
    ),
  );
}

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

class PointsLineChart extends StatelessWidget {
  final List<charts.Series> seriesList;
  final bool animate;

  PointsLineChart(this.seriesList, {this.animate});

  /// Creates a [LineChart] with sample data and no transition.
  factory PointsLineChart.withSampleData() {
    return new PointsLineChart(
      _createSampleData(),
      // Disable animations for image tests.
      animate: false,
    );
  }

  @override
  Widget build(BuildContext context) {
    return new charts.LineChart(seriesList,
        animate: animate,
        defaultRenderer: new charts.LineRendererConfig(includePoints: true));
  }

  /// Create one series with sample hard coded data.
  static List<charts.Series<LinearSales, int>> _createSampleData() {
    final data = [
      new LinearSales(0, 5),
      new LinearSales(1, 25),
      new LinearSales(2, 100),
      new LinearSales(3, 75),
    ];

    return [
      new charts.Series<LinearSales, int>(
        id: 'Sales',
        colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
        domainFn: (LinearSales sales, _) => sales.year,
        measureFn: (LinearSales sales, _) => sales.sales,
        data: data,
      )
    ];
  }
}

/// Sample linear data type.
class LinearSales {
  final int year;
  final int sales;

  LinearSales(this.year, this.sales);
}