Wheel with enableTonalPalette -> LateInitializationError: Field '_activeColorSwatchList@1082511434' has not been initialized.

[te8uekm12]

To reproduce the problem you need to modify example from: https://pub.dev/packages/flex_color_picker/example with

class _ColorPickerPageState extends State<ColorPickerPage> {
...
@override
  void initState() {
    ...
    dialogPickerColor = const Color(0xFF613E42); \\ Set custom color to force wheel
    ...
   }

   ...
  Future<bool> colorPickerDialog() async {
    return ColorPicker(
    ...
    enableTonalPalette: true, \\Enable tonal palete
    ...
    ).showPickerDialog(
     ...
    );
   }
}

Then you have to:

• click on color swatch from section ''Click this color to modify it in a dialog..' to open 'Select color' with Wheel dialog active
• select any color from tonal palete
• change tab to primary then you will get an exception:

======== Exception caught by widgets library =======================================================
The following LateError was thrown building ColorPicker(dirty, state: _ColorPickerState#a56bf):
LateInitializationError: Field '_activeColorSwatchList@1082511434' has not been initialized.

The relevant error-causing widget was: 
  ColorPicker ColorPicker:file:///D:/workspace/mobile/ex_app/lib/ag/main.dart:255:12
When the exception was thrown, this was the stack: 
#0      _ColorPickerState._activeColorSwatchList (package:flex_color_picker/src/color_picker.dart)
#1      _ColorPickerState.build (package:flex_color_picker/src/color_picker.dart:1709:42)
#2      StatefulElement.build (package:flutter/src/widgets/framework.dart:5583:27)
#3      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5471:15)
#4      StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5634:11)
#5      Element.rebuild (package:flutter/src/widgets/framework.dart:5187:7)
#6      BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2895:19)
#7      WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:984:21)

[rydmike]

Hi @te8uekm12,

Thanks for this report and sorry for the delay. I have verified the bug, identified the bug cause and made a fix. I just need to test and verify it a bit more. I should be able to release the fix later today.

[rydmike]

The bug is fixed, but the package is not released yet. GitHub auto closes an issues with a FIX is mentioned that references and issue. I re-opened the issue and will close it manually when the updated package that contains the fix has actually been released on pub.

[rydmike]

Version 3.3.1 with the fix has been released.

[te8uekm12]

Works great, thanks for help:)