WebView makes app crash if it is too big (Virtual display only) #93115
Description
This is the same as #28978, but I opened another issue because the former was closed and locked without any proper solution.
In my device, differently from #28978, the app crashed and closed, but the device did not restart.
As noted by @danagbemava-nc, this issue does not happen when in hybrid composition mode.
Steps to Reproduce
- Consider the following, minimal, reproducible example:
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() {
runApp(
const MaterialApp(
home: CrashingWebViewExample(),
),
);
}
class CrashingWebViewExample extends StatelessWidget {
const CrashingWebViewExample({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return const SingleChildScrollView(
child: SizedBox(
// If the crash does not happens with 10000, try increasing it. The size required to reproduce may vary from device to device.
height: 10000,
child: WebView(
initialUrl: 'https://en.wikipedia.org/wiki/Cephalopod_size',
),
),
);
}
}- Try running it on Android.
Expected results:
The app runs and shows a webview that has the passed height, showing all the content of the rendered URL.
Actual results:
The app crashes with a warning.
This warning was introduced in flutter/engine#8704 and flutter/engine#9110.
W/PlatformViewsController(19084): Creating a virtual display of size: [1080, 25500] may result in problems(https://github.com/flutter/flutter/issues/2897).It is larger than the device screen size: [1080, 2065].
E/InputMethodManager(19084): b/117267690: Failed to get fallback IMM with expected displayId=44 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{9c12899 VFEDHVC.. ........ 0,0-1080,4316}