Running the wheel if the `selected` is receiving the same value

[huangshan-ios]

Is your feature request related to a problem? Please describe.
I don't really know whether this is a bug or just not implemented feature.
But I've implemented a wheel, and when the stream of selected is receiving the same as the previous value, it's doesn't start the animation or anything.

Describe the solution you'd like
I think the wheel can provide a init bool for turning on/off this feature.

Describe alternatives you've considered
Please consider the above solution.

Additional context
Ex:
The first time the selected is receiving 1, and the second time it's receiving 1 again. The wheel will not start running or anything.

version: flutter_fortune_wheel: ^1.1.0

[kevlatus]

Hi @huangshan-ios,
I can't reproduce this issue on my end as the intention of having a stream for selecting values originally was to enable this feature.

Can you please share a minimum reproducible code sample, where I can check the issue?

[huangshan-ios]

Hi @kevlatus,

I have a RxInt currentSliceIndex for the stream

FortuneWheel(
   rotationCount: 20,
   selected: currentSliceIndex.stream,
   items: currentSpin.slices.map((slice) => FortuneItem(
                    style: FortuneItemStyle(
                      borderColor: Colors.transparent,
                      color: slice.color,
                    ),
                    child: Text(slice.title),
                  ))
              .toList(),
   animateFirst: false,
   onAnimationEnd: () {},
   onFling: () {},
)

and I have a function to set the currentSliceIndex

currentSliceIndex.value = Random().nextInt(currentSpin.slices.length);

But if the Random.nextInt() returns the same value 2 times in a row ( Ex: The first time is 1, and the second is 1 too). The wheel receives the stream but it doesn't do anything.

[kevlatus]

hey @huangshan-ios,

please try the following code, which does use built-in features from Flutter. This works as intended on my end. If it does on your end, I guess the issue is to be found in the RxInt feature you are using,

class ExamplePage extends StatefulWidget {
  @override
  _ExamplePageState createState() => _ExamplePageState();
}

class _ExamplePageState extends State<ExamplePage> {
  StreamController<int> selected = StreamController<int>();

  @override
  void dispose() {
    selected.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final items = <String>[
      'Grogu',
      'Mace Windu',
      'Obi-Wan Kenobi',
      'Han Solo',
      'Luke Skywalker',
      'Darth Vader',
      'Yoda',
      'Ahsoka Tano',
    ];

    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Fortune Wheel'),
      ),
      body: GestureDetector(
        onTap: () {
          selected.add(0);
        },
        child: Column(
          children: [
            Expanded(
              child: FortuneWheel(
                selected: selected.stream,
                items: [
                  for (var it in items) FortuneItem(child: Text(it)),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}

[huangshan-ios]

Hi @kevlatus, Thank you for your support. I'll give it a try and close this issue.