benjaken
bug Unhandled Exception: setState() called after dispose(): _DemoButton
thanks your perfect ui framework. when i run demo,i get such error:
E/flutter (20403): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: setState() called after dispose(): _DemoButton#3b59a(lifecycle state: defunct, not mounted)
E/flutter (20403): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback.
E/flutter (20403): The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
E/flutter (20403): This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().
E/flutter (20403): #0 State.setState.
thanks your perfect ui framework. when i run demo,i get such error:
E/flutter (20403): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: setState() called after dispose(): _DemoButton#3b59a(lifecycle state: defunct, not mounted) E/flutter (20403): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback. E/flutter (20403): The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree. E/flutter (20403): This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose(). E/flutter (20403): #0 State.setState. (package:flutter/src/widgets/framewo
What version do you use flutter
flutter --version
Flutter 1.12.13+hotfix.8 • channel stable • https://github.com/flutter/flutter.git Framework • revision 0b8abb4724 (4 weeks ago) • 2020-02-11 11:44:36 -0800 Engine • revision e1e6ced81d Tools • Dart 2.7.0
run in [android-virtual-device
