BlocBase<State> class
Null safety
An interface for the core functionality implemented by both Bloc and Cubit.
Constructors
Properties
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isClosed → bool
-
Whether the bloc is closed. [...]
read-only
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- state → State
-
The current state.
read-only
-
stream
→ Stream<
State> -
The current state stream.
read-only
Methods
-
addError(
Object error, [StackTrace? stackTrace]) → void -
Reports an
error
which triggers onError with an optional StackTrace. -
close(
) → Future< void> - Closes the instance. This method should be called when the instance is no longer needed. Once close is called, the instance can no longer be used.
-
emit(
State state) → void -
Updates the
state
to the providedstate
. emit does nothing if the instance has been closed or if thestate
being emitted is equal to the currentstate
. [...] -
listen(
void onData(State)?, {Function? onError, void onDone()?, bool? cancelOnError}) → StreamSubscription< State> -
Adds a subscription to the
Stream<State>
. Returns a StreamSubscription which handles events from theStream<State>
using the providedonData
,onError
andonDone
handlers.@Deprecated('Use stream.listen instead. Will be removed in v8.0.0') -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
onChange(
Change< State> change) → void -
Called whenever a
change
occurs with the givenchange
. Achange
occurs when a newstate
is emitted. onChange is called before thestate
of thecubit
is updated. onChange is a great spot to add logging/analytics for a specificcubit
. [...] -
onError(
Object error, StackTrace stackTrace) → void -
Called whenever an
error
occurs and notifies BlocObserver.onError. [...] -
toString(
) → String -
A string representation of this object. [...]
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited