FutureProvider<T> class
Listens to a Future and exposes its result to child
and its descendants.
It is considered an error to pass a future that can emit errors without
providing a catchError
method.
updateShouldNotify
can optionally be passed to avoid unnecessarily
rebuilding dependents when Provider is rebuilt but value
did not change.
Defaults to (previous, next) => previous != next
.
See InheritedWidget.updateShouldNotify for more information.
See also:
- Future, which is listened by FutureProvider.
- Inheritance
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SingleChildStatelessWidget
- InheritedProvider<
T> - DeferredInheritedProvider<
Future< T> , T> - FutureProvider
Constructors
-
FutureProvider({Key key, @required Create<
Future< create, T initialData, ErrorBuilder<T> >T> catchError, UpdateShouldNotify<T> updateShouldNotify, bool lazy, TransitionBuilder builder, Widget child}) -
Creates a Future from
create
and subscribes to it. [...] -
FutureProvider.value({Key key, @required Future<
T> value, T initialData, ErrorBuilder<T> catchError, UpdateShouldNotify<T> updateShouldNotify, TransitionBuilder builder, Widget child}) -
Listens to
value
and expose it to all of FutureProvider descendants.
Properties
- builder → TransitionBuilder
-
Syntax sugar for obtaining a BuildContext that can read the provider
created. [...]
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
- 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(
) → _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. [...]
@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 -
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