dart
Flutter Completer completed more than once
Flutter.*error:.*Future already completed
Fixes
- 1.Check completer.isCompleted before calling complete()
- 2.Use a Completer only once - create new instance for each operation
- 3.Guard with try/catch or status flag to prevent double completion
flutterdartfuture
Related Errors
dart3 fixes
Flutter RenderFlex overflow
RenderFlex overflowed by .* pixels on the (right|bottom|left|top)
- •Wrap overflowing widget in Expanded or Flexible
- •Use SingleChildScrollView for scrollable content
dart3 fixes
Flutter setState called after widget dispose
setState\(\) called after dispose\(\)
- •Check 'if (mounted)' before calling setState()
- •Cancel async operations in dispose() method
dart3 fixes
Flutter platform channel method not implemented
MissingPluginException.*No implementation found for method.*on channel
- •Ensure native plugin is registered in MainActivity/AppDelegate
- •Run 'flutter clean' and rebuild the app