Error: The method 'withValues' isn't defined for the class 'Color'.

[ShahzaibH414]

import 'package:flutter/material.dart';
import '../../../Constants/custom_fonts.dart';
import 'home_screen_table.dart';
import 'package:syncfusion_flutter_charts/charts.dart';

class RevenueChart extends StatelessWidget {
const RevenueChart({super.key});

@OverRide
Widget build(BuildContext context) {
final List chartData = [
SalesData(DateTime(2010), 35),
SalesData(DateTime(2011), 28),
SalesData(DateTime(2012), 34),
SalesData(DateTime(2013), 32),
SalesData(DateTime(2014), 40)
];
return Scaffold(
body: Center(
child: Container(
child: SfCartesianChart(
primaryXAxis: DateTimeAxis(),
series: [
// Renders line chart
LineSeries<SalesData, DateTime>(
dataSource: chartData,
xValueMapper: (SalesData sales, _) => sales.year,
yValueMapper: (SalesData sales, _) => sales.sales
)
]
)
)
)
);
}
}

class SalesData {
SalesData(this.year, this.sales);
final DateTime year;
final double sales;
}

---

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../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/axis/axis.dart:3868:42: Error: The method 'withValues' isn't defined for the class 'Color'.

• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  paint.color = plotBand.color.withValues(alpha: plotBand.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/axis/axis.dart:3882:40: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? plotBand.borderColor.withValues(alpha: plotBand.opacity)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/axis/axis.dart:3949:33: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color: style.color?.withValues(alpha: plotBand.opacity));
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/axis/axis.dart:3984:33: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color: style.color?.withValues(alpha: plotBand.opacity));
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/behaviors/zooming.dart:1115:21: Error: The getter 'a' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'a'.
  fillColor.a == 1) {
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/behaviors/zooming.dart:1116:31: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  fillColor = fillColor.withValues(alpha: 0.3);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/data_label.dart:754:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  return settings.color!.withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/data_label.dart:760:12: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  .withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/box_and_whisker_series.dart:1131:37: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ..color = strokePaint.color.withValues(alpha: opacity)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1881:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color = color.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1884:35: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  strokeColor = strokeColor.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1896:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color = color.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1901:37: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  strokeColor = strokeColor.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1909:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color = color.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/chart_series.dart:1914:37: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  strokeColor = strokeColor.withValues(alpha: opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/radial_bar_series.dart:337:39: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  segment.fillPaint.color.withValues(alpha: trackOpacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/series/radial_bar_series.dart:340:26: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  trackColor.withValues(alpha: trackOpacity);
  ^^^^^^^^^^
  D/EGL_emulation( 4262): app_time_stats: avg=84.68ms min=3.31ms max=3220.47ms count=42
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/trendline/trendline.dart:2497:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ..color = color!.withValues(alpha: opacity)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/utils/shape_helper.dart:1009:51: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  borderPaint..color = Colors.grey.shade300.withValues(alpha: 0.5));
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/utils/shape_helper.dart:1014:51: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  borderPaint..color = Colors.grey.shade300.withValues(alpha: 0.5));
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/utils/shape_helper.dart:1067:51: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  borderPaint..color = Colors.grey.shade300.withValues(alpha: 0.5));
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/utils/helper.dart:342:16: Error: The getter 'r' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'r'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/utils/helper.dart:342:40: Error: The getter 'g' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'g'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/utils/helper.dart:342:64: Error: The getter 'b' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'b'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/core_legend.dart:1662:31: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  color: details.color!.withValues(alpha: widget.iconOpacity),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/core_legend.dart:1870:51: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? widget.textStyle.color!.withValues(
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/circular_data_label.dart:168:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  return settings.color!.withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/circular_data_label.dart:171:12: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  .withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/funnel_data_label.dart:150:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  return settings.color!.withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/funnel_data_label.dart:155:12: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  .withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/pyramid_data_label.dart:150:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  return settings.color!.withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/charts/common/pyramid_data_label.dart:153:12: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  .withValues(alpha: settings.opacity);
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:34:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  26: primary.withValues(alpha: 0.1),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:41:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  20: primary.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:42:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  30: primary.withValues(alpha: 0.1),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:43:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: primary.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:44:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  61: primary.withValues(alpha: 0.24),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:45:22: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  138: primary.withValues(alpha: 0.54),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:58:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  74: onPrimary.withValues(alpha: 0.29),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:60:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onPrimary.withValues(alpha: 0.29)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:61:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : surface.withValues(alpha: 0.56),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:62:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: onPrimary.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:63:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  138: onPrimary.withValues(alpha: 0.54),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:71:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? Colors.black.withValues(alpha: 0.08)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:72:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : Colors.white.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:79:33: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  204: secondaryContainer.withValues(alpha: 0.8),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:80:33: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  205: secondaryContainer.withValues(alpha: 0.8),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:87:20: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  0: surface.withValues(alpha: 0.0001),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:88:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: surface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:89:22: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  143: surface.withValues(alpha: 0.56),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:104:22: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  0: onSurface.withValues(alpha: 0.001),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:105:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  10: onSurface.withValues(alpha: 0.04),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:106:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  11: onSurface.withValues(alpha: 0.04),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:107:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  19: onSurface.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:108:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  20: onSurface.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:109:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  21: onSurface.withValues(alpha: 0.081),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:110:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  22: onSurface.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:113:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.09),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:114:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  23: onSurface.withValues(alpha: 0.09),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:115:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  28: onSurface.withValues(alpha: 0.11),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:117:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.11)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:118:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.24),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:119:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: onSurface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:120:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  32: onSurface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:121:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  33: onSurface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:122:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  34: onSurface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:124:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.12)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:125:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.24),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:126:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  41: onSurface.withValues(alpha: 0.16),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:127:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  42: onSurface.withValues(alpha: 0.16),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:128:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  43: onSurface.withValues(alpha: 0.17),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:130:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.18)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:131:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.27),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:133:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.18)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:134:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.43),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:135:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  61: onSurface.withValues(alpha: 0.24),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:136:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  66: onSurface.withValues(alpha: 0.26),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:137:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  69: onSurface.withValues(alpha: 0.27),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:142:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.28)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:143:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.33),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:145:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.26)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:146:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.30),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:147:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  77: onSurface.withValues(alpha: 0.30),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:148:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  82: onSurface.withValues(alpha: 0.32),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:149:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  84: onSurface.withValues(alpha: 0.33),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:150:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  92: onSurface.withValues(alpha: 0.36),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:151:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  94: onSurface.withValues(alpha: 0.37),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:153:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.37)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:154:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.17),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:155:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  97: onSurface.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:156:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  98: onSurface.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:157:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  110: onSurface.withValues(alpha: 0.43),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:158:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  135: onSurface.withValues(alpha: 0.53),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:159:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  138: onSurface.withValues(alpha: 0.54),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:160:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  153: onSurface.withValues(alpha: 0.6),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:161:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  154: onSurface.withValues(alpha: 0.6),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:162:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  179: onSurface.withValues(alpha: 0.7),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:164:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.72)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:166:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  217: onSurface.withValues(alpha: 0.85),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:167:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  222: onSurface.withValues(alpha: 0.87),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:169:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.87)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:174:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  227: onSurface.withValues(alpha: 0.89),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:175:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  228: onSurface.withValues(alpha: 0.89),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:195:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  97: onSurfaceVariant.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:197:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? Colors.black.withValues(alpha: 0.54)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:198:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : Colors.white.withValues(alpha: 0.54),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:200:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? Colors.black.withValues(alpha: 0.6)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:201:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : Colors.white.withValues(alpha: 0.6),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:256:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? Colors.black.withValues(alpha: 0.16)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:257:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : Colors.white.withValues(alpha: 0.16),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:259:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.53)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:260:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.85),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:273:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  0: transparent.withValues(alpha: 0.0001),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:283:28: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? Colors.white.withValues(alpha: 0.75)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:284:51: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : const Color.fromRGBO(48, 48, 48, 1).withValues(alpha: 0.75),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:319:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? primary.withValues(alpha: 0.1)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:320:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : primary.withValues(alpha: 0.3),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:322:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  30: primary.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:323:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: primary.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:325:31: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  138: onSurfaceVariant.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:334:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: onSurfaceVariant.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:336:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  138: onPrimary.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:350:33: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  204: secondaryContainer.withValues(alpha: 0.8),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:358:20: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  0: surface.withValues(alpha: 0.0001),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:359:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: surface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:377:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  10: primary.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:378:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  11: onSurface.withValues(alpha: 0.04),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:380:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  20: primary.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:384:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.09),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:386:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  31: onSurface.withValues(alpha: 0.12),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:389:30: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  34: onSurfaceVariant.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:394:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  61: onSurface.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:399:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  82: onSurface.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:400:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  92: onSurface.withValues(alpha: 0.36),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:403:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  ? onSurface.withValues(alpha: 0.37)
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:404:25: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  : onSurface.withValues(alpha: 0.17),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:405:23: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  97: onSurface.withValues(alpha: 0.38),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:407:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  153: onSurface.withValues(alpha: 0.6),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:410:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  222: onSurface.withValues(alpha: 0.87),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:413:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  227: onSurface.withValues(alpha: 0.89),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:473:24: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  0: transparent.withValues(alpha: 0.0001),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:474:21: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  20: primary.withValues(alpha: 0.08),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:482:19: Error: The method 'withValues' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  82: scrim.withValues(alpha: 0.32),
  ^^^^^^^^^^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:564:25: Error: The getter 'a' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'a'.
  return _floatToInt8(a) << 24 |
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:565:22: Error: The getter 'r' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'r'.
  _floatToInt8(r) << 16 |
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:566:22: Error: The getter 'g' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'g'.
  _floatToInt8(g) << 8 |
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_core-28.2.11/lib/src/theme/color_scheme.dart:567:22: Error: The getter 'b' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'b'.
  _floatToInt8(b) << 0;
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/sparkline/utils/helper.dart:16:16: Error: The getter 'r' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'r'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/sparkline/utils/helper.dart:16:40: Error: The getter 'g' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'g'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  ../../.pub-cache/hosted/pub.dev/syncfusion_flutter_charts-28.2.11/lib/src/sparkline/utils/helper.dart:16:64: Error: The getter 'b' isn't defined for the class 'Color'.
• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'b'.
  (((color.r * 255) * 299 + (color.g * 255) * 587 + (color.b * 255) * 114) /
  ^
  D/EGL_emulation( 4262): app_time_stats: avg=91.72ms min=3.39ms max=3196.19ms count=39
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  D/EGL_emulation( 4262): app_time_stats: avg=84.66ms min=3.22ms max=3202.27ms count=45
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  D/EGL_emulation( 4262): app_time_stats: avg=85.08ms min=10.15ms max=3203.58ms count=47
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[AswiniDileep]

Hi ShahzaibH414,

We have analyzed your query, and the issue occurs when using an SDK version lower than 3.24.5. The withValues method is unavailable in the Color class in versions before 3.24.5.

We would like to inform you that Flutter version 3.27.0 has updated the withOpacity method to withValues in the color class. Therefore, we have made the necessary changes to our chart widget to align with this update. To resolve the issue, please update your Flutter SDK version to 3.27.0 or later and upgrade the chart package 28.1.36 or above to the latest version, as shared below. Let us know if you need further assistance.

Version: https://pub.dev/packages/syncfusion_flutter_charts/versions/28.2.11

If you are using lower SDK, you can refer to our SDK version compatibility documentation for a detailed understanding of supported Flutter versions and their compatibility with our packages.

Regards,
Aswini S

[arnoldalejandrolara]

I'm on version 3.24.5 and it marks me the same error

[AswiniDileep]

Hi arnoldalejandrolara,

As per our previous update, we would like to inform you that the withOpacity has been deprecated and withValues has been introduced in the Flutter SDK version 3.27.0. To resolve the issue, we kindly request you to upgrade the Flutter SDK version to 3.27.0 or the latest one 3.29.2. If you prefer using our package with the lower Flutter SDK lesser than 3.27.0, please use syncfusion_flutter_charts: 28.1.33 or lower. Additionally, we have shared user guide documentation for the Syncfusion Compatibility Package version. Please find the compatible Syncfusion Flutter package version based on your Flutter SDK version below.

User guide documentation for the Syncfusion Compatibility Package version: https://help.syncfusion.com/flutter/system-requirements#sdk-version-compatibility

The version of the syncfusion_flutter_charts package can be found at https://pub.dev/packages/syncfusion_flutter_charts/versions

We hope this information will help you to resolve the issue. If you have any further queries, please do not hesitate to reach out to us.

Regards,
Aswini S