What is Riverpod?
- Flutter course
- Intermediate
- Lesson 11/99
- 4 min
Learn that Riverpod is a safer alternative to Provider.
What is Riverpod?
Riverpod is the safe and testable alternative to the Provider package. Unlike Provider, it does not depend on BuildContext; it is accessed everywhere via ref. It reduces build-time errors and forces explicit distribution.
import 'package:flutter_riverpod/flutter_riverpod.dart';The app root is wrapped with ProviderScope.
ProviderScope and ref
ProviderScope wraps the app root and manages the lifecycle of each provider. ref is the object used to access providers; it is used via ref.watch and ref.read.
void main() {
runApp(ProviderScope(child: MyApp()));
}Providers are declared at the top level.
Practice Import Riverpod and wrap the root
Import the flutter_riverpod package. In main, wrap the root with ProviderScope. In main, call print('riverpod hazır').
Starter code
import 'package:flutter/material.dart';
// flutter_riverpod paketini içe aktar
void main() {
print('riverpod hazır');
// ProviderScope ile kök sarmala
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(body: Center(child: Text('Merhaba Riverpod'))),
);
}
}Sample solution
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
void main() {
print('riverpod hazır');
runApp(ProviderScope(child: MyApp()));
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(body: Center(child: Text('Merhaba Riverpod'))),
);
}
}Expected output
riverpod hazır
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 What advantage does Riverpod have over the Provider package?
- It disables hot reload
- It removes Material widgets
- It does not depend on BuildContext Correct answer
- It produces a smaller APK
Explanation: Riverpod does not depend on BuildContext; it is accessed via ref from anywhere. Thus it is safer than the Provider package which depends on BuildContext.
2 Wrap the root with ProviderScope
void main() {
runApp(____(child: MyApp()));
}void main() {
runApp(ProviderScope(child: MyApp()));
}Explanation: In Riverpod the app root is wrapped with ProviderScope; it manages the lifecycle of providers.
3 Riverpod parts
| Term | Meaning |
|---|---|
Riverpod |
Safe alternative package to Provider |
ProviderScope |
Widget wrapping the app root |
ref |
Object to access providers |
BuildContext'ten bağımsız |
Riverpod's core advantage |