StreamBuilder. Bad state: Stream has already been listened to [duplicate]

Question

I have StreamBuilder

Widget build(BuildContext context) {
  return StreamBuilder(
    initialData: false,
    stream: widget.stream, ...

For initializing widget I call:

_EventSpeakerPager(..., streamController.stream.distinct());

And this produce error "Bad state: Stream has already been listened to." Without distinct() it works, but it's not suitable for me.

I've tried asBroadcastStream() and got the same error

Does anybody know, how can I handle this

P.S. I've already looked into these:

topic1, topic2, topic3 - nothing helps

P.P.S. When I use stream without StreamBuilder - all works fine

void initState() {
super.initState();
widget.stream.listen((bool data) {
  setState(() {
    ...
  });
});

}

Answer 1

So, all I've needed to do is replace

final StreamController<bool> streamController = StreamController<bool>();

with final StreamController<bool> streamController = StreamController<bool>.broadcast();