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How to cancel a StreamSubscription in dispose to avoid a setState-after-dispose crash in Flutter

startdebugging.net · published 13 July 2026

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https://api.flutter.dev/flutter/dart-async/StreamSubscription/cancel.html

api.flutter.dev

https://api.flutter.dev/flutter/widgets/State/dispose.html

api.flutter.dev

https://api.flutter.dev/flutter/widgets/StreamBuilder-class.html

api.flutter.dev

https://dart.dev/libraries/async/using-streams

dart.dev