webview_eager_scroll.dart

import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';

void main() => runApp(MaterialApp(home: CrashingWebViewExample()));

class CrashingWebViewExample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final double maxHeight = MediaQuery.of(context).size.height * 0.7;

    print("maxHeight: $maxHeight");

    return SingleChildScrollView(
      child: Column(
        children: <Widget>[
          Container(
              padding: const EdgeInsets.all(20),
              color: Colors.redAccent,
              child: const Text("My Red TextWidget")),
          _createWebViewWidget(maxHeight),
          Container(
              padding: const EdgeInsets.all(20),
              color: Colors.blue,
              child: const Text("My Blue TextWidget")),
        ],
      ),
    );
  }

  Widget _createWebViewWidget(double maxHeight) {
    final Set<Factory<OneSequenceGestureRecognizer>> gestureRecognizers = [
      Factory<OneSequenceGestureRecognizer>(() => EagerGestureRecognizer()),
    ].toSet();

    return SingleChildScrollView(
      child: Container(
        height: maxHeight,
        child: WebView(
          initialUrl: 'https://en.wikipedia.org/wiki/Cephalopod_size',
          gestureRecognizers: gestureRecognizers,
        ),
      ),
    );
  }
}