BlocProvider<T extends Bloc<Object, Object>> class

Takes a ValueBuilder that is responsible for creating the bloc and a child which will have access to the bloc via BlocProvider.of(context). It is used as a dependency injection (DI) widget so that a single instance of a bloc can be provided to multiple widgets within a subtree.

Automatically handles closing the bloc when used with create and lazily creates the provided bloc unless lazy is set to false.

BlocProvider(
  create: (BuildContext context) => BlocA(),
  child: ChildA(),
);
Inheritance

Constructors

BlocProvider({Key key, @required Create<T> create, Widget child, bool lazy})
Takes a ValueBuilder that is responsible for creating the bloc and a child which will have access to the bloc via BlocProvider.of(context). It is used as a dependency injection (DI) widget so that a single instance of a bloc can be provided to multiple widgets within a subtree. [...]
BlocProvider.value({Key key, @required T value, Widget child})
Takes a bloc and a child which will have access to the bloc via BlocProvider.of(context). When BlocProvider.value is used, the bloc will not be automatically closed. As a result, BlocProvider.value should mainly be used for providing existing blocs to new routes. [...]

Properties

child Widget
child and its descendants which will have access to the cubit.
final, inherited
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
lazy bool
Whether or not the cubit being provided should be lazily created. Defaults to true.
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
inherited
buildWithChild(BuildContext context, Widget child) Widget
A build method that receives an extra child parameter. [...]
inherited
createElement() SingleChildStatelessElement
Creates a StatelessElement to manage this widget's location in the tree. [...]
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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
Returns 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. [...]
@nonVirtual, inherited

Static Methods

of<T extends Bloc>(BuildContext context) → T
Method that allows widgets to access a bloc instance as long as their BuildContext contains a BlocProvider instance. [...]
override