FlutterBlocMonitorDelegate class

Delegate that handles all the storing of the user bloc events, transitions and errors


FlutterBlocMonitorDelegate({dynamic onErrorFunc(BlocBase bloc, Object error, StackTrace stackTrace)?, dynamic onEventFunc(Bloc bloc, Object? event)?, dynamic onTransitionFunc(Bloc bloc, Transition transition)?})


hashCode int
The hash code for this object.
no setterinherited
onErrorFunc → (dynamic Function(BlocBase bloc, Object error, StackTrace stackTrace)?)
Callback to be executed when error occurs
onEventFunc → (dynamic Function(Bloc bloc, Object? event)?)
Callback to be executed when event occurs
onTransitionFunc → (dynamic Function(Bloc bloc, Transition transition)?)
Callback to be executed when transition occurs
runtimeType Type
A representation of the runtime type of the object.
no setterinherited


noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
onChange(BlocBase bloc, Change change) → void
Called whenever a Change occurs in any bloc A change occurs when a new state is emitted. onChange is called before a bloc's state has been updated.
onClose(BlocBase bloc) → void
Called whenever a Bloc is closed. onClose is called just before the Bloc is closed and indicates that the particular instance will no longer emit new states.
onCreate(BlocBase bloc) → void
Called whenever a Bloc is instantiated. In many cases, a cubit may be lazily instantiated and onCreate can be used to observe exactly when the cubit instance is created.
onError(BlocBase bloc, Object error, StackTrace stackTrace) → void
Called whenever an error is thrown in any Bloc or Cubit. The stackTrace argument may be StackTrace.empty if an error was received without a stack trace.
onEvent(Bloc bloc, Object? event) → void
Called whenever an event is added to any bloc with the given bloc and event.
onTransition(Bloc bloc, Transition transition) → void
Called whenever a transition occurs in any bloc with the given bloc and transition. A transition occurs when a new event is added and a new state is emitted from a corresponding EventHandler. onTransition is called before a bloc's state has been updated.
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.

Static Properties

errors List<ErrorInfo>
events List<EventInfo>
transitions List<TransitionInfo>