Images fails to load the second time on web when compiled to wasm
🐛 Bug Report
When compiled to wasm, images don't load the second time if navigated back and forth again, giving the below error:
ImageCodecException: Failed to decode image using the browser's ImageDecoder API.
Image source: https://docs.flutter.dev/assets/images/dash/dash-fainting.gif
Original browser error: JavaScriptError
But, if you provide the errorListener param some value, this error mysteriously fixes.
Expected behavior
Images should load every time without giving any errors even if errorListener is not provided.
Reproduction steps
- Copy below sample code into
lib/main.dart - Run on web with wasm using the below command:
flutter run -d chrome --wasm - Click on
Open Page 1button and wait for the image to load - Click back and wait 5 seconds
- Once again click
Open Page 1button - See image loading error
- Now uncomment the
errorListenerline in sample code - Enter
rin terminal to hot restart - Repeat steps 3-5
- See the error is fixed magically
Configuration
Version: 3.4.1
Platform:
- [ ] :iphone: iOS
- [ ] :robot: Android
- [x] :spider_web: Web
Additional Data
Sample Code
import 'package:flutter/material.dart';
import 'package:cached_network_image/cached_network_image.dart';
void main() => runApp(const MyApp());
class MyApp extends StatefulWidget {
const MyApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final _urls = [
'https://docs.flutter.dev/assets/images/dash/dash-fainting.gif',
'https://picsum.photos/250?image=2',
];
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Web Images',
home: Builder(
builder: (context) {
return Scaffold(
appBar: AppBar(title: Text('Web Images')),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
ElevatedButton(
onPressed: () => _onPressed(context, 0),
child: Text('Open Page 1'),
),
const SizedBox(height: 20),
ElevatedButton(
onPressed: () => _onPressed(context, 1),
child: Text('Open Page 2'),
),
],
),
),
);
},
),
);
}
void _onPressed(BuildContext context, int index) {
Navigator.of(context).push(
MaterialPageRoute(builder: (context) => NewWidget(url: _urls[index])),
);
}
}
class NewWidget extends StatelessWidget {
const NewWidget({super.key, required this.url});
final String url;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Center(
child: CachedNetworkImage(
imageUrl: url,
placeholder: (_, _) => CircularProgressIndicator.adaptive(),
// ! Uncomment the line below to see magic
// errorListener: (_) {},
),
),
);
}
}
Any updates on this? 😢
Same issue here.
Thanks for suggesting the "magic" errorListener workaround, great to have this as a temporary fix!
errorListener workaround not work at first time install serviceWorker.
is imageRenderMethodForWeb: ImageRenderMethodForWeb.HttpGet work?
any updates???