BlocProvider<T extends Bloc> class

Provides BLoC via this Provider.

BLoC's lifecycle is associated with the state that the provider has internally.

This can be called directory(see constructor documentation), or you can define a class as below.

Example

class CounterBlocProvider extends BlocProvider<CounterBloc> {
  CounterBlocProvider({
    @required Widget child,
  }) : super(
    child: child,
    creator: (context, _bag) {
      assert(context != null);
      return CounterBloc();
    },
  );

  static CounterBloc of(BuildContext context) => BlocProvider.of(context);
}

Inheritance

Constructors

BlocProvider({Key? key, required BlocCreator<T> creator, Widget? child, bool autoDispose = true}): Constructor for simple usage.
BlocProvider.builder({Key? key, required BlocCreator<T> creator, required BlocBuilder<T> builder, bool autoDispose = true}): Constructor for advanced usage.
const
BlocProvider.fromBloc({Key? key, required T bloc, required Widget child}): Pass the bloc which is managed by other widget.
BlocProvider.fromBlocContext({Key? key, required BuildContext context, required Widget child}): Pass the context that contains bloc which is managed by other widget.

Properties

autoDispose → bool: final
builder → BlocBuilder<T>: final
creator → BlocCreator<T>: final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

copyWith(Widget child) → BlocProvider<T>: Clone the current BlocProvider with a new child Widget.
createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _BlocProviderState<Bloc>: Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode: Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String: A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a one-line detailed description of the object.
inherited
toStringShort() → String: A short, textual description of this widget.
inherited

Operators

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

Static Methods

maybeOf<BlocType extends Bloc>(BuildContext context) → BlocType?
of<BlocType extends Bloc>(BuildContext context) → BlocType: Return the BlocType of the closest ancestor _Inherited.