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CarouselView.weighted throws when given zero constraints #167621
Description
Steps to reproduce
- Run the code sample (debug or release mode. Without the zeroed SizedBox the issue is reproducible in release mode on Android).
- Observe the error log.
Expected results
No exception thrown.
Actual results
Several exceptions in the error log.
Code sample
Code sample
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(
home: Scaffold(
// The issue is also reproducible without a zero width SixedBox.
// In release mode, especially on Android, the initial viewport dimension
// is usually zero.
body: SizedBox(
width: 0,
child: CarouselView.weighted(
flexWeights: <int>[1, 2],
children: <Widget>[FlutterLogo(), FlutterLogo()],
),
),
),
);
}
}
Screenshots or Video
Logs
Logs
════════ Exception caught by rendering library ═════════════════════════════════
The following UnsupportedError was thrown during performLayout():
Unsupported operation: Infinity or NaN toInt
The relevant error-causing widget was:
CarouselView CarouselView:file:///Users/bruno/Nevercode/investigationapp/lib/0%20-%20Investigate/Various/flutter_105630/flutter_105630_carousel_flutter_logo.dart:14:31
When the exception was thrown, this was the stack:
#0 double.toInt (dart:core-patch/double.dart)
#1 double.round (dart:core-patch/double.dart:196:34)
double.dart:196
#2 _RenderSliverWeightedCarousel._firstVisibleItemIndex (package:flutter/src/material/carousel.dart:918:69)
carousel.dart:918
#3 _RenderSliverWeightedCarousel.getMinChildIndexForScrollOffset (package:flutter/src/material/carousel.dart:981:21)
carousel.dart:981
Flutter Doctor output
Doctor output
[!] Flutter (Channel master, 3.32.0-1.0.pre.200, on macOS 14.2.1 23C71 darwin-arm64, locale fr-FR)
! Upstream repository [email protected]:bleroux/flutter.git is not a standard remote.
Set environment variable "FLUTTER_GIT_URL" to [email protected]:bleroux/flutter.git to dismiss
this error.
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[!] Xcode - develop for iOS and macOS (Xcode 15.1)
! CocoaPods 1.11.3 out of date (1.16.2 is recommended).
CocoaPods is a package manager for iOS or macOS platform code.
Without CocoaPods, plugins will not work on iOS or macOS.
For more info, see https://flutter.dev/to/platform-plugins
To update CocoaPods, see
https://guides.cocoapods.org/using/getting-started.html#updating-cocoapods
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.1)
[✓] VS Code (version 1.99.3)
[✓] Connected device (2 available)
[✓] Network resources
Metadata
Metadata
Assignees
Labels
Important issues not at the top of the work listError messages from the Flutter frameworkFound to occur in 3.29Found to occur in 3.32flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onmaterial_ui package in flutter/packagesIssue is closed as already fixed in a newer versionOwned by Design Languages teamTriaged by Design Languages team
Type
Projects
- Status
Activity
Fix CarouselView.weighted crashes when initlal viewportDimension is 0…
github-actions commentedon May 12, 2025
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.Fix CarouselView.weighted crashes when initlal viewportDimension is 0…
Fix CarouselView.weighted crashes when initlal viewportDimension is 0…