[webview_flutter] navigationDelegate, onPageStarted, onPageFinished not always called #108801
Description
Steps to Reproduce
- Execute
flutter runon the code sample (with webview_flutter: ^3.0.4) - Press the ./ or github button
- Navigate to e.g. Actions on github
- Or navigate to a story on Slashdot
Expected results:
Log of calls to navigationDelegate, onPageStarted, onPageFinished
Actual results:
No calls. On github only the onPageFinished
Code sample
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
late WebViewController webViewController;
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
bottomSheet: Row(children: [
TextButton(
child: const Text('/.'),
onPressed: () =>
webViewController.loadUrl('https://m.slashdot.org'),
),
TextButton(
child: const Text('github'),
onPressed: () =>
webViewController.loadUrl('https://github.com/pimusicbox'),
),
]),
body: WebView(
navigationDelegate: (NavigationRequest navigation) async {
debugPrint('Nav ${navigation.url}');
return NavigationDecision.navigate;
},
key: const Key('webviewkey'),
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (WebViewController controller) {
webViewController = controller;
},
onPageStarted: (url) {
debugPrint('Page started $url');
},
onPageFinished: (url) {
debugPrint('Page finished $url');
},
onWebResourceError: (error) async {
debugPrint(
'Webview load error: ${error.description} ${error.failingUrl} ${error.domain}');
},
backgroundColor:
Colors.white, //needed for some websites in dark mode
initialMediaPlaybackPolicy: AutoMediaPlaybackPolicy
.require_user_action_for_all_media_types,
allowsInlineMediaPlayback: true,
gestureNavigationEnabled: true,
)));
}
}
Logs
[✓] Flutter (Channel stable, 3.0.5, on macOS 12.5 21G72 darwin-arm, locale nl-NL)
• Flutter version 3.0.5 at /Users/wouter/Library/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision f1875d570e (3 weeks ago), 2022-07-13 11:24:16 -0700
• Engine revision e85ea0e79c
• Dart version 2.17.6
• DevTools version 2.12.2
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
• Android SDK at /Users/wouter/Library/Android/sdk
• Platform android-31, build-tools 31.0.0
• ANDROID_SDK_ROOT = /Users/wouter/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• CocoaPods version 1.11.3
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2021.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
[✓] VS Code (version 1.69.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.44.0
[✓] Connected device (3 available)
• sdk gphone64 arm64 (mobile) • emulator-5554 • android-arm64 • Android 12 (API 32) (emulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 12.5 21G72 darwin-arm
• Chrome (web) • chrome • web-javascript • Google Chrome 103.0.5060.134
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!