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

[KalybosPro]

Bug description

error: ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2242:39: 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'.
  color: Colors.black.withValues(alpha: 0.3),
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2289:58: 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: 0.87)
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2290:58: 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: 0.87)
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2325:38: 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: 0.6),
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2347:52: 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_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2348:52: 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_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2431:50: 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: 0.38)
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2434:50: 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: 0.38))
  ^^^^^^^^^^

Steps to reproduce

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

Code sample

Code sample

import 'package:dm_app/utils/icons/custom_icon.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:syncfusion_flutter_pdfviewer/pdfviewer.dart';

class WebViewPage extends StatelessWidget {
  final String url;
  final bool fromAsset;
  const WebViewPage({
    super.key,
    required this.url,
    this.fromAsset = true,
  });

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        height: ScreenUtil().screenHeight,
        width: ScreenUtil().screenWidth,
        padding: EdgeInsets.only(top: 20.h),
        child: Stack(
          children: [
            if (fromAsset) ...{
              SfPdfViewer.asset(url)
            } else ...{
              SfPdfViewer.network(url)
            },
            Positioned(
              top: 20.h,
              left: 15.w,
              child: const CustomIcon(),
            ),
          ],
        ),
      ),
    );
  }
}

Screenshots or Video

Screenshots / Video demonstration

error: ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2242:39: 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'.
  color: Colors.black.withValues(alpha: 0.3),
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2289:58: 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: 0.87)
  ^^^^^^^^^^
  ../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-28.1.39/lib/src/pdfviewer.dart:2290:58: 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: 0.87)
  ^^^^^^^^^^

Stack Traces

Stack Traces

none

On which target platforms have you observed this bug?

iOS

Flutter Doctor output

Doctor output

none

[RamiroNoronha]

I had the same problem, but in mobile development (Android) and using the SfcartesianChart. I solved this by updating my Flutter SDK. I think you are using an incompatible version between the package and Flutter

[immankumarsync]

Hi @KalybosPro,
We have migrated our source to Flutter SDK 3.27. In this version, there are breaking changes in the Color class.
Breaking change: https://docs.flutter.dev/release/breaking-changes/wide-gamut-framework#migrate-withopacity

So, kindly upgrade the Flutter SDK to 3.27 and rebuild your application to resolve this issue.
If you are not willing to upgrade the Flutter SDK, please use syncfusion_flutter_pdfviewer package version 28.1.35 or below.

Please find the Flutter SDK compatibility table from the link,
https://help.syncfusion.com/flutter/system-requirements#sdk-version-compatibility

[KalybosPro]

It worked after upgrading Flutter version from 3.5.6 to 3.27.2