NoSuchMethodError after update to 0.5.0

[PabloPL]

I'm getting following error after update to 0.5.0 version

I/flutter (21118): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (21118): The following NoSuchMethodError was thrown building Slidable(dirty, dependencies:
I/flutter (21118): [_ScrollableScope], state: SlidableState#1c8cb(tickers: tracking 1 ticker)):
I/flutter (21118): The method '[]' was called on null.
I/flutter (21118): Receiver: null
I/flutter (21118): Tried calling: [](Instance of 'SlideActionType')
I/flutter (21118):
I/flutter (21118): When the exception was thrown, this was the stack:
I/flutter (21118): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:50:5)
I/flutter (21118): #1 SlidableState._dismissThreshold
package:flutter_slidable/…/widgets/slidable.dart:562
I/flutter (21118): #2 SlidableState.build
package:flutter_slidable/…/widgets/slidable.dart:897
I/flutter (21118): #3 StatefulElement.build
package:flutter/…/widgets/framework.dart:3825
I/flutter (21118): #4 ComponentElement.performRebuild
package:flutter/…/widgets/framework.dart:3739

widget.dismissal is null in _dismissThreshold

Adding some dummy check for null value in dismissal solves error (no idea why ?? operator is not working when ?. returns null...)

[tegab]

can you show code on how you solved it.. thnx

[PabloPL]

In slidable.dart (in flutter_slidable lib) replace

double get _dismissThreshold =>
    widget.dismissal?.dismissThresholds[actionType] ?? _kDismissThreshold;

With something like this

double get _dismissThreshold {
    if (widget.dismissal == null) return _kDismissThreshold;
    else return widget.dismissal.dismissThresholds[actionType] ?? _kDismissThreshold;
  }

For me it's working fine

[jaumard]

I can confirm the problem (and the solution ^^) would be nice to have this patch and deploy @letsar :)

[jeffaknine]

First time trying the package and I'm running into this issue as well. @PabloPL maybe you could send a PR to get this fixed ?

[PabloPL]

PR created.

[Nothing-Works]

have the same problem, hopefully, the PR can be merged ASAP.....

[hiroshihorie]

Please fix ASAP!

[ghost]

Until we have this PR merged, I am using a workaround, set dismissal to the following:

dismissal: SlidableDismissal(
     child: SlidableDrawerDismissal(),
     onWillDismiss: (actionType) {
         return false;
     },
),

this is enforcing to have a dismissal property by always is canceling the dismissal actions

[JeffersonCarvalh0]

Thanks, @eponcedeleon. Your solution worked here, but I had to add a key property to theSlidable object in order for it to work

[letsar]

Fixed in 0.5.2