type 'ScrollableState' because 'ScrollableState?' is nullable and 'ScrollableState' isn't.

[ivangoluuk]

../../../developer/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datepicker-20.4.48/lib/src/date_picker/date_picker.dart:7596:37: Error: The argument type 'ScrollableState?' can't be assigned to the parameter type 'ScrollableState' because 'ScrollableState?' is nullable and 'ScrollableState' isn't.

• 'ScrollableState' is from 'package:flutter/src/widgets/scrollable.dart' ('../../../developer/flutter/packages/flutter/lib/src/widgets/scrollable.dart').

   scrollableState: Scrollable.of(context),
  
                               ^
  

../../../developer/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datepicker-20.4.48/lib/src/date_picker/date_picker.dart:7611:40: Error: A value of type 'ScrollableState?' can't be assigned to a variable of type 'ScrollableState' because 'ScrollableState?' is nullable and 'ScrollableState' isn't.

• 'ScrollableState' is from 'package:flutter/src/widgets/scrollable.dart' ('../../../developer/flutter/packages/flutter/lib/src/widgets/scrollable.dart').

   ..scrollableState = Scrollable.of(context)
  
                                  ^
  

../../../developer/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datepicker-20.4.48/lib/src/date_picker/date_picker.dart:7665:71: Error: A value of type 'RenderAbstractViewport?' can't be returned from a function with return type 'RenderAbstractViewport' because 'RenderAbstractViewport?' is nullable and 'RenderAbstractViewport' isn't.

• 'RenderAbstractViewport' is from 'package:flutter/src/rendering/viewport.dart' ('../../../developer/flutter/packages/flutter/lib/src/rendering/viewport.dart').

RenderAbstractViewport get _stackViewPort => RenderAbstractViewport.of(this);

[esluidev]

@ivangoluuk did you find a solution? I am having the same problem

[miguelflores1993]

I have the same problem.
don't use version:
syncfusion_flutter_datepicker: ^20.4.48

Use like this:
syncfusion_flutter_datepicker: "20.4.44"

[ivangoluuk]

hey thank u so much. its working now

[kefeh]

This works for me too. Thank you

[seborys40]

What changed for this to happen ? I even got this error in the same version I was using.

[MuniappanSubramanian]

@ivangoluuk

Based on the instructions provided, we attempted to replicate the reported issue but were unable to do so. A sample has been created and is attached, including the output from testing.

Please be aware that the version of SfDateRangePicker used in this test is 20.4.48 and Flutter version is 3.7.0.

We suggest updating to the latest version of Flutter and re-testing the issue. If the problem persists, please inform us.
datepicker_sample.zip
Output.zip

[Dev-Muhammad-Junaid]

I have the same problem. don't use version: syncfusion_flutter_datepicker: ^20.4.48

Use like this: syncfusion_flutter_datepicker: "20.4.44"

This one worked for me.

[StrixSC]

I have the same problem. don't use version: syncfusion_flutter_datepicker: ^20.4.48

Use like this: syncfusion_flutter_datepicker: "20.4.44"

+1 Thank you for the fix. Also curious as to what caused this to break.

[Mae623]

I have the same problem. don't use version: syncfusion_flutter_datepicker: ^20.4.48

Use like this: syncfusion_flutter_datepicker: "20.4.44"

hello, I try to use this way, but the pub get give me 20.4.48, even I execute the "flutter clean" command first. Is there anything I can do?

[Dev-Muhammad-Junaid]

I have the same problem. don't use version: syncfusion_flutter_datepicker: ^20.4.48
Use like this: syncfusion_flutter_datepicker: "20.4.44"

hello, I try to use this way, but the pub get give me 20.4.48, even I execute the "flutter clean" command first. Is there anything I can do?

You can remove the library from pubspec.yaml first and paste directly. Also I have added both dependecncies with " "

[Mae623]

I have the same problem. don't use version: syncfusion_flutter_datepicker: ^20.4.48
Use like this: syncfusion_flutter_datepicker: "20.4.44"

hello, I try to use this way, but the pub get give me 20.4.48, even I execute the "flutter clean" command first. Is there anything I can do?

You can remove the library from pubspec.yaml first and paste directly. Also I have added both dependecncies with " "

Thank you for reply.
These are my step below, hope for your look:
1."flutter clean" command
2.delete pubspec.lock file
3.remove 'syncfusion_flutter_datepicker: ^20.4.44' from pubspec.yaml
4."pub get" command
5.add 'syncfusion_flutter_datepicker: ^20.4.44' into pubspec.yaml
6."pub get" command

However, it turns out to be
syncfusion_flutter_datepicker: dependency: "direct main" description: name: syncfusion_flutter_datepicker url: "https://pub.flutter-io.cn" source: hosted version: "20.4.48"
Sigh!

[Mae623]

The bug seems linked to dart 3

[Dev-Muhammad-Junaid]

The bug seems linked to dart 3

Yes, Possibly! , Dart and Android studio updates were the only things I did before adding these dependencies..

[Mae623]

The bug seems linked to dart 3

Yes, Possibly! , Dart and Android studio updates were the only things I did before adding these dependencies..

I only execute the "pub upgrade" command once
Maybe upgrade to dart 3 is the only way I can do
Sigh!