I'm having the error Unhandled Exception: setState() or markNeedsBuild() called during build. when I combine overriddes and async providers (StreamProvider or FutureProvider).
To Reproduce
Run flutter run on the code sample:
Code sample
```dart
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
void main() {
runApp(
const ProviderScope(
child: MyApp(),
),
);
}
class MyApp extends ConsumerWidget {
const MyApp({
super.key,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
return MaterialApp(
home: ProviderScope(
overrides: [
parameterProvider.overrideWithValue(null),
],
child: const Scaffold(
body: Column(
children: [
Widget1(),
Widget2(),
],
),
),
),
);
}
}
class Widget1 extends ConsumerWidget {
const Widget1({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final version = ref.watch(combinedProvider) != null;
return Text('version $version');
}
}
class Widget2 extends ConsumerWidget {
const Widget2({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final combined = ref.watch(combinedProvider) != null;
final provider = ref.watch(secondProvider) != null;
return Text('notifier $provider, combined $combined');
}
}
final parameterProvider = Provider.autoDispose((ref) => null);
final futureProvider = FutureProvider.autoDispose((ref) async {
return 42;
});
final secondProvider = Provider.autoDispose((ref) {
return ref.watch(futureProvider).valueOrNull;
}, dependencies: [futureProvider]);
final combinedProvider = Provider.autoDispose(
(ref) {
return ref.watch(parameterProvider) ?? ref.watch(secondProvider);
},
dependencies: [parameterProvider, secondProvider],
);
```
Logs
```console
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: setState() or markNeedsBuild() called during build.
This Widget1 widget cannot be marked as needing to build because the framework is already in the process of building widgets. A widget can be marked as needing to be built during the build phase only if one of its ancestors is currently building. This exception is allowed because the framework builds parent widgets before children, which means a dirty descendant will always be built. Otherwise, the framework might not visit this widget during this build phase.
The widget on which setState() or markNeedsBuild() was called was:
Widget1
The widget which was currently being built when the offending call was made was:
Widget2
#0 Element.markNeedsBuild. (package:flutter/src/widgets/framework.dart:5033:9)
#1 Element.markNeedsBuild (package:flutter/src/widgets/framework.dart:5045:6)
#2 ConsumerStatefulElement.watch.. (package:flutter_riverpod/src/consumer.dart:566:20)
#3 ProviderBase.addListener. (package:riverpod/src/framework/provider_base.dart:98:41)
#4 _RootZone.runBinaryGuarded (dart:async/zone.dart:1606:10)
#5 ProviderElementBase._notifyListeners. (package:riverpod/src/framework/element.dart:525:28)
#6 ResultData.map (package:riverpod/src/result.dart:74:16)
#7 ProviderElementBase._notifyListeners (package:riverpod/src/framework/element.dart:519:14)
#8 ProviderElementBase._performBuild (package:riverpod/src/framework/element.dart:358:7)
#9 ProviderElementBase.flush (package:riverpod/src/framework/element.dart:307:7)
#10 ProviderElementBase.readSelf (package:riverpod/src/framework/element.dart:776:5)
#11 _ProviderStateSubscription.read (package:riverpod/src/framework/provider_base.dart:181:28)
#12 ConsumerStatefulElement.watch (package:flutter_riverpod/src/consumer.dart:568:8)
#13 Widget2.build (package:flutter_app_stable/main.dart:53:26)
#14 _ConsumerState.build (package:flutter_riverpod/src/consumer.dart:476:19)
#15 StatefulElement.build (package:flutter/src/widgets/framework.dart:5583:27)
#16 ConsumerStatefulElement.build (package:flutter_riverpod/src/consumer.dart:539:20)
#17 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5471:15)
#18 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5634:11)
#19 Element.rebuild (package:flutter/src/widgets/framework.dart:5187:7)
#20 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2895:19)
#21 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:984:21)
#22 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:457:5)
#23 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1325:15)
#24 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1255:9)
#25 SchedulerBinding.scheduleWarmUpFrame. (package:flutter/src/scheduler/binding.dart:978:7)
#26 Timer._createTimer. (dart:async-patch/timer_patch.dart:18:15)
#27 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:398:19)
#28 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
#29 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)
```
Expected behavior
A clear and concise description of what you expected to happen.
Describe the bug
I'm using
flutter_riverpod: ^2.5.1I'm having the error
Unhandled Exception: setState() or markNeedsBuild() called during build.when I combine overriddes and async providers (StreamProviderorFutureProvider).To Reproduce
Run
flutter runon the code sample:Code sample
```dart import 'package:flutter/material.dart'; import 'package:flutter_riverpod/flutter_riverpod.dart'; void main() { runApp( const ProviderScope( child: MyApp(), ), ); } class MyApp extends ConsumerWidget { const MyApp({ super.key, }); @override Widget build(BuildContext context, WidgetRef ref) { return MaterialApp( home: ProviderScope( overrides: [ parameterProvider.overrideWithValue(null), ], child: const Scaffold( body: Column( children: [ Widget1(), Widget2(), ], ), ), ), ); } } class Widget1 extends ConsumerWidget { const Widget1({super.key}); @override Widget build(BuildContext context, WidgetRef ref) { final version = ref.watch(combinedProvider) != null; return Text('version $version'); } } class Widget2 extends ConsumerWidget { const Widget2({super.key}); @override Widget build(BuildContext context, WidgetRef ref) { final combined = ref.watch(combinedProvider) != null; final provider = ref.watch(secondProvider) != null; return Text('notifier $provider, combined $combined'); } } final parameterProvider = Provider.autoDisposeLogs
```console [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: setState() or markNeedsBuild() called during build. This Widget1 widget cannot be marked as needing to build because the framework is already in the process of building widgets. A widget can be marked as needing to be built during the build phase only if one of its ancestors is currently building. This exception is allowed because the framework builds parent widgets before children, which means a dirty descendant will always be built. Otherwise, the framework might not visit this widget during this build phase. The widget on which setState() or markNeedsBuild() was called was: Widget1 The widget which was currently being built when the offending call was made was: Widget2 #0 Element.markNeedsBuild.Expected behavior A clear and concise description of what you expected to happen.