FutureProvider<T> class

A provider that asynchronously creates a value.

FutureProvider can be considered as a combination of Provider and FutureBuilder. By using FutureProvider, the UI will be able to read the state of the future synchronously, handle the loading/error states, and rebuild when the future completes.

A common use-case for FutureProvider is to represent an asynchronous operation such as reading a file or making an HTTP request, that is then listened to by the UI.

It can then be combined with:

Usage example: reading a configuration file

FutureProvider can be a convenient way to expose a Configuration object created by reading a JSON file.

Creating the configuration would be done with your typical async/await syntax, but inside the provider. Using Flutter's asset system, this would be:

final configProvider = FutureProvider<Configuration>((ref) async {
  final content = json.decode(
    await rootBundle.loadString('assets/configurations.json'),
  ) as Map<String, Object?>;

  return Configuration.fromJson(content);

Then, the UI can listen to configurations like so:

Widget build(BuildContext context, WidgetRef ref) {
  AsyncValue<Configuration> config = ref.watch(configProvider);

  return config.when(
    loading: () => const CircularProgressIndicator(),
    error: (err, stack) => Text('Error: $err'),
    data: (config) {
      return Text(config.host);

This will automatically rebuild the UI when the Future completes.

As you can see, listening to a FutureProvider inside a widget returns an AsyncValue – which allows handling the error/loading states.

See also:

Mixed in types
Available Extensions


FutureProvider(Create<FutureOr<T>, FutureProviderRef<T>> _createFn, {String? name, Iterable<ProviderOrFamily>? dependencies, @Deprecated('Will be removed in 3.0.0') Family<Object?>? from, @Deprecated('Will be removed in 3.0.0') Object? argument, @Deprecated('Will be removed in 3.0.0') DebugGetCreateSourceHash? debugGetCreateSourceHash})
A provider that asynchronously creates a value.
FutureProvider.internal(Create<FutureOr<T>, FutureProviderRef<T>> _createFn, {required String? name, required Iterable<ProviderOrFamily>? dependencies, required Iterable<ProviderOrFamily>? allTransitiveDependencies, required DebugGetCreateSourceHash? debugGetCreateSourceHash, Family<Object?>? from, Object? argument})
An implementation detail of Riverpod


allTransitiveDependencies Iterable<ProviderOrFamily>?
All the dependencies of a provider and their dependencies too.
argument Object?
If this provider was created with the .family modifier, argument is the variable that was used.
debugGetCreateSourceHash → DebugGetCreateSourceHash?
A debug-only fucntion for obtaining a hash of the source code of the initialization function.
dependencies Iterable<ProviderOrFamily>?
The list of providers that this provider potentially depends on.
from Family<Object?>?
If this provider was created with the .family modifier, from is the .family instance.
future AlwaysAliveRefreshable<Future<T>>
Obtains the Future associated with a FutureProvider.
hashCode int
The hash code for this object.
no setterinherited
name String?
A custom label for providers.
runtimeType Type
A representation of the runtime type of the object.
no setterinherited


addListener(Node node, void listener(AsyncValue<T>? previous, AsyncValue<T> next), {required void onError(Object error, StackTrace stackTrace)?, required void onDependencyMayHaveChanged()?, required bool fireImmediately}) ProviderSubscription<AsyncValue<T>>
Starts listening to this transformer
createElement() FutureProviderElement<T>
An internal method that defines how a provider behaves.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
overrideWith(Create<FutureOr<T>, FutureProviderRef<T>> create) Override
Override the provider with a new initialization function.
read(Node node) AsyncValue<T>
Obtains the result of this provider expression without adding listener.
select<Selected>(Selected selector(AsyncValue<T> value)) AlwaysAliveProviderListenable<Selected>
Partially listen to a provider.
selectAsync<Output>(Output selector(T data)) AlwaysAliveProviderListenable<Future<Output>>
A variant of select for asynchronous values
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.


autoDispose → const AutoDisposeFutureProviderBuilder
Marks the provider as automatically disposed when no longer listened to.
family → const FutureProviderFamilyBuilder
A group of providers that builds their value from an external parameter.