overrideWithValue method
Overrides a provider with a value, ejecting the default behaviour.
This will also disable the auto-scoping mechanism, meaning that if the overridden provider specified dependencies, it will have no effect.
Some common use-cases are:
- testing, by replacing a service with a fake implementation, or to reach a very specific state easily.
- multiple environments, by changing the implementation of a class based on the platform or other parameters.
This function should be used in combination with ProviderScope.overrides
or ProviderContainer.overrides
:
final myService = Provider((ref) => MyService());
runApp(
ProviderScope(
overrides: [
myService.overrideWithValue(
// Replace the implementation of MyService with a fake implementation
MyFakeService(),
),
],
child: MyApp(),
),
);
Implementation
Override overrideWithValue(State value) {
return ProviderOverride(
origin: this,
override: ValueProvider<State>(value),
);
}