DependencyProvider<T> class

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

DependencyProvider(
  create: (context) => DependencyA(),
  child: ChildA(),
);

Lazily creates the dependency unless lazy is set to false.

DependencyProvider(
  lazy: false,`
  create: (context) => DependencyA(),
  child: ChildA(),
);

Inheritance

Object
DiagnosticableTree
Widget
StatelessWidget
SingleChildStatelessWidget
DependencyProvider

Implemented types

Widget

Constructors

DependencyProvider({Key? key, required Create<T> create, Widget? child, bool? lazy}): Takes a Create function that is responsible for creating the dependency and a child which will have access to the dependency via DependencyProvider.of(context). It is used as a dependency injection (DI) widget so that a single instance of a dependency can be provided to multiple widgets within a subtree.
DependencyProvider.value({Key? key, required T value, Widget? child}): Takes a dependency and a child which will have access to the dependency. A new dependency should not be created in DependencyProvider.value. Dependencies should always be created using the default constructor within the Create function.

Properties

builder → TransitionBuilder?: Syntax sugar for obtaining a BuildContext that can read the provider created.
finalinherited
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

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() → _InheritedProviderElement<T>: 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.
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, int wrapWidth = 65}) → 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

of<T>(BuildContext context, {bool listen = false}) → T: Method that allows widgets to access a dependency instance as long as their BuildContext contains a DependencyProvider instance.