AppBlocObserver class

A BlocObserver that logs BLoC and Cubit lifecycle events to the console.

All output is guarded by kDebugMode so nothing is printed in release builds. Register this observer in debug builds only via Bloc.observer = AppBlocObserver().

Inheritance

Constructors

AppBlocObserver()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
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.
override
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.
override
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.
override
onDone(Bloc bloc, Object? event, [Object? error, StackTrace? stackTrace]) → void
Called whenever an event handler for a specific bloc has completed. This may include an error and stackTrace if an uncaught exception occurred within the event handler.
inherited
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.
override
onEvent(Bloc bloc, Object? event) → void
Called whenever an event is added to any bloc with the given bloc and event.
override
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.
override
toString() → String
A string representation of this object.
inherited

Operators

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