Scrolling breaks when turning android phone

[mennovanhout]

If you have a dashboard and keep it in portrait mode. When the dashboard doesn't fit rotating to landscape it just gives up rotating at all. And will never work again until restart.

[mennovanhout]

The following _TypeError was thrown building _DashboardStack<CustomDashboardItem>-[LabeledGlobalKey<_DashboardStackState<CustomDashboardItem>>#ceda8](dirty, state: _DashboardStackState<CustomDashboardItem>#dc000):
Null check operator used on a null value

The relevant error-causing widget was: 
  Dashboard<CustomDashboardItem> Dashboard:file:///C:/development/apps/hdashboards/lib/screens/dashboard.dart:298:19
When the exception was thrown, this was the stack: 
#0      _ItemCurrentLayout.isBottomSide (package:dashboard/src/models/item_current_layout.dart:900:55)
#1      _ItemCurrentLayout._currentPosition (package:dashboard/src/models/item_current_layout.dart:230:21)
#2      _DashboardStackState.buildPositioned (package:dashboard/src/widgets/dashboard_stack.dart:96:59)
#3      _DashboardStackState.build.<anonymous closure> (package:dashboard/src/widgets/dashboard_stack.dart:287:18)
#4      MappedIterator.moveNext (dart:_internal/iterable.dart:403:20)
#5      new _GrowableList._ofOther (dart:core-patch/growable_array.dart:202:26)
#6      new _GrowableList.of (dart:core-patch/growable_array.dart:152:26)
#7      new List.of (dart:core-patch/array_patch.dart:39:18)

Looks its coming from isBottomSide in item_current_layout.dart

bool get isBottomSide {
    var last = (_layoutController._endsTree.lastKey())!; // THIS LINE
    var lIn = _layoutController.getIndexCoordinate(last);
    return _layoutController.getIndexCoordinate(_endIndex)[1] == lIn[1];
  }

[mennovanhout]

New reproducable way:

1. Open example project
2. Use trash icon to delete all current cards
3. Add new card via + icon
4. Drag the card to the bottom of the screen, it crashes!

[mennovanhout]

@Mehmetyaz i am also willing to pay to get the issues resolved please contact me.

[Mehmetyaz]

Hey! I am sorry. No need for money my friend. But I'm very busy right now. It's not possible for me to take care of it for a few more days. But if you can throw a PR it can be resolved sooner. Or you'll have to wait a little longer.

[mennovanhout]

Hey! I am sorry. No need for money my friend. But I'm very busy right now. It's not possible for me to take care of it for a few more days. But if you can throw a PR it can be resolved sooner. Or you'll have to wait a little longer.

I am trying to resolve it myself haha, but my in depth knowledge of flutter is not nearly enough.
I found that some variables are failing within the flutter core _maxExtend being null for instance. Probably due the fact that in dashboard _scroll runs either to fast or something. But i couldn't find any solution so far, i already saw _scroll is being called on addPostFrame....

But litterly my entire company is a bit running on dashboard so please let me atleast do a donation! As your package is the core of my business, i would love to do a contribution.

[Mehmetyaz]

Open source is open source :) I don't think it's something that deserves sponsorship.

BUT!

I am actively looking for a job, I can work/consult at your company part time or full time and remotely. It's not just for Flutter positions either.

In any case:

I will try to solve the problem after a few days.

[mennovanhout]

Open source is open source :) I don't think it's something that deserves sponsorship.

BUT!

I am actively looking for a job, I can work/consult at your company part time or full time and remotely. It's not just for Flutter positions either.

In any case:

I will try to solve the problem after a few days.

Reach out to me via [email protected] there some things i am struggling with within flutter and things i could do better or more efficient. I would like to hire you as a freelance for s bit to help me out? Im a solo company so that would be amazing. Mail me your hourly rate etc please