Riverpod overview in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a simple Riverpod provider that returns a string.

Flutter

final greetingProvider = Provider<String>((ref) {
  return [1];
});

Drag options to blanks, or click blank then click option'

Anull

B12345

C"Hello Riverpod"

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Returning a number or boolean instead of a string.

Forgetting to use quotes around the string.

The provider must return a string. "Hello Riverpod" is a valid string.

2fill in blank

medium

Complete the code to read the provider value inside a ConsumerWidget build method.

Flutter

Widget build(BuildContext context, WidgetRef ref) {
  final greeting = ref.[1](greetingProvider);
  return Text(greeting);
}

Drag options to blanks, or click blank then click option'

Awatch

Bobserve

Cread

Dlisten

Attempts:

3 left

💡 Hint

Common Mistakes

Using read instead of watch inside build.

Using non-existent methods like observe.

Use ref.watch to listen to provider changes and rebuild the widget.

3fill in blank

hard

Fix the error in the provider declaration by completing the missing keyword.

Flutter

final counterProvider = [1]<int>((ref) {
  return 0;
});

Drag options to blanks, or click blank then click option'

AFutureProvider

BStreamProvider

CProvider

DStateProvider

Attempts:

3 left

💡 Hint

Common Mistakes

Using Provider when state changes are needed.

Using asynchronous providers like FutureProvider incorrectly.

Use StateProvider to create a provider that holds a mutable state like an integer counter.

4fill in blank

hard

Fill both blanks to update the state of a StateProvider inside a ConsumerWidget.

Flutter

ref.[1](counterProvider.notifier).[2]((state) => state + 1);

Drag options to blanks, or click blank then click option'

Aread

Bupdate

Cstate

Dstate =

Attempts:

3 left

💡 Hint

Common Mistakes

Using watch instead of read for notifier.

Trying to assign state directly instead of using update.

Use ref.read to get the notifier and update to change the state.

5fill in blank

hard

Fill all three blanks to create a FutureProvider that fetches a string asynchronously.

Flutter

final dataProvider = FutureProvider<String>((ref) async {
  final response = await fetchData();
  return [1];
});

Future<String> fetchData() async {
  await Future.delayed(Duration(seconds: 1));
  return [2];
}

// Usage inside build:
final asyncValue = ref.[3](dataProvider);

Drag options to blanks, or click blank then click option'

Aresponse

B"Data loaded"

Cwatch

Dread

Attempts:

3 left

💡 Hint

Common Mistakes

Returning a literal instead of the response in the provider.

Using read instead of watch inside build.

Return the awaited response, return a string in fetchData, and use watch to listen to the FutureProvider.