Webview goes blank when redirecting to another local html file or anchors inside the same html file #65379

kakyoism · 2020-09-08T11:02:00Z

Steps to Reproduce

I'm using webview to show localized html files. In each HTML file there are href links to redirect to corresponding language files. I'm using this little class below to show the HTML as a page.

with this little class
class LocalLoader {
  Future<String> loadLocal(String filename) async {
    return await rootBundle.loadString('assets/$filename');
  }
}
class HtmlPage extends StatelessWidget {
  final Completer<WebViewController> controller;
  final String htmlFile;
  HtmlPage({
    @required this.htmlFile,
    @required this.controller,
  });
  @override
  Widget build(BuildContext context) {
    return Container(
      child: FutureBuilder<String>(
        future: LocalLoader().loadLocal(htmlFile),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            return WebView(
              debuggingEnabled: true,
              initialUrl: Uri.dataFromString(snapshot.data,
                  mimeType: 'text/html',
                  // CAUTION
                  // - required for non-ascii chars
                  encoding: Encoding.getByName("UTF-8")
              ).toString(),
              javascriptMode: JavascriptMode.unrestricted,
              onWebViewCreated: (WebViewController webViewController) {
                // CAUTION
                // - avoid exception "Bad state: Future already completed"
                if(!controller.isCompleted) {
                  controller.complete(webViewController);
                }
              },
            );
          } else if (snapshot.hasError) {
            return Text("${snapshot.error}");
          } else {
            print('undefined behaviour');
          }
          return CircularProgressIndicator();
        },
      ),);
  }
}
class HelpPage extends HtmlPage {
  HelpPage(ctrl) : super(htmlFile: 'help_en.html', controller: ctrl);
}

class AboutPage extends HtmlPage {
  AboutPage(ctrl) : super(htmlFile: 'about_en.html', controller: ctrl);
}

And the relevant html code looks like this in each language files

<p><span style="font-size: 20px;"><a href="help_en.html">English</a></span> <span class="math inline">    </span> <span style="font-size: 20px;"><a href="help_fr.html">Français</a></span></p>

Repro 1

Open my app

Place help_en.html and help_fr.html in assets folder, and add the corresponding yaml section.
Load the initial page "help_en.html" and it shows correctly
Click the Français link on the page

Expected results:

We should see the help_fr.html upon clicking its redirection link.

Actual results:

We see a blank page

Repro 2

I suspected it may have been a relative path error. So I modified the HTML page so that the href looks like

<p><span style="font-size: 20px;"><a href="assets/help_en.html">English</a></span> <span class="math inline">    </span> <span style="font-size: 20px;"><a href="assets/help_fr.html">Français</a></span></p>

But the result is the same as in Repro 1.

Logs

E/InputMethodManager(24228): b/117267690: Failed to get fallback IMM with expected displayId=215 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{f259a5f VFEDHVC.. .F...... 0,0-2075,706}
E/InputMethodManager(24228): b/117267690: Failed to get fallback IMM with expected displayId=215 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{f259a5f VFEDHVC.. .F...... 0,0-2075,706}

No flutter analyze errors

$ flutter doctor -v
[✓] Flutter (Channel dev, 1.22.0-9.0.pre, on Mac OS X 10.15.6 19G2021, locale en-CN)
    • Flutter version 1.22.0-9.0.pre at /Applications/flutter
    • Framework revision 7a43175198 (10 days ago), 2020-08-28 23:18:04 -0400
    • Engine revision 07e2520d5d
    • Dart version 2.10.0 (build 2.10.0-73.0.dev)
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.0)
    • Android SDK at /Applications/Android/sdk
    • Platform android-30, build-tools 30.0.0
    • ANDROID_HOME = /Applications/Android/sdk
    • ANDROID_SDK_ROOT = /Applications/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.7, Build version 11E801a
    • CocoaPods version 1.9.1

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.48.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.13.2

[✓] Connected device (2 available)
    • ONEPLUS A6000 (mobile)   • <my udid>                                 • android-arm64 • Android 10 (API 29)
    • MyiPhone (mobile) •<my udid> • ios           • iOS 13.6.1
    ! Device emulator-5554 is offline.

• No issues found!

The text was updated successfully, but these errors were encountered:

pedromassangocode · 2020-09-08T11:43:34Z

I was able to reproduce this issue with the latest version of the plugin (webview_flutter: ^0.3.22+1).

sample code

import 'dart:async';
import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:webview_flutter/webview_flutter.dart';

void main() => runApp(MaterialApp(home: Scaffold(body: Padding(
  padding: EdgeInsets.only(top: 50),
  child:   HtmlPage(
    htmlFile: 'help_en.html',
  ),
))));

class LocalLoader {
  Future<String> loadLocal(String filename) async {
    return await rootBundle.loadString('assets/$filename');
  }
}
class HtmlPage extends StatelessWidget {
  final Completer<WebViewController> controller = Completer();
  final String htmlFile;

  HtmlPage({@required this.htmlFile});

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.only(top: 100),
      child: FutureBuilder<String>(
        future: LocalLoader().loadLocal(htmlFile),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            return WebView(
              debuggingEnabled: true,
              initialUrl: Uri.dataFromString(snapshot.data,
                  mimeType: 'text/html',
                  // CAUTION
                  // - required for non-ascii chars
                  encoding: Encoding.getByName("UTF-8")
              ).toString(),
              javascriptMode: JavascriptMode.unrestricted,
              navigationDelegate: (error) async {
                print(error.url);
                return NavigationDecision.navigate;
              },
              onWebViewCreated: (WebViewController webViewController) {
                // CAUTION
                // - avoid exception "Bad state: Future already completed"
                if(!controller.isCompleted) {
                  controller.complete(webViewController);
                }
              },
            );
          } else if (snapshot.hasError) {
            return Text("${snapshot.error}");
          } else {
            print('undefined behaviour');
          }
          return CircularProgressIndicator();
        },
      ),);
  }
}

Logs

Syncing files to device sdk gphone x86 arm...
V/InputMethodManager(11153): b/117267690: Failed to get fallback IMM with expected displayId=12 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{1fe638d VFEDHVC.. .F...... 0,0-1080,1676}
E/chromium(11153): [ERROR:aw_browser_terminator.cc(125)] Renderer process (11621) crash detected (code -1).
Restarted application in 1,689ms.
I/flutter (11153): undefined behaviour
V/InputMethodManager(11153): b/117267690: Failed to get fallback IMM with expected displayId=13 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{7959a08 VFEDHVC.. .F...... 0,0-1080,1676}
I/flutter (11153): about:blank#blocked
V/InputMethodManager(11153): b/117267690: Failed to get fallback IMM with expected displayId=13 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{7959a08 VFEDHVC.. .F...... 0,0-1080,1676}

flutter doctor -v

[✓] Flutter (Channel master, 1.22.0-10.0.pre.88, on Mac OS X 10.15.6 19G2021, locale en)
    • Flutter version 1.22.0-10.0.pre.88 at /Users/pedromassango/dev/SDKs/flutter_master
    • Framework revision e10bdbbd9d (17 hours ago), 2020-09-07 11:40:03 -0700
    • Engine revision ac8b9c4c52
    • Dart version 2.10.0 (build 2.10.0-86.0.dev)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
    • Android SDK at /Users/pedromassango/Library/Android/sdk
    • Platform android-30, build-tools 30.0.1
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.7, Build version 11E801a
    • CocoaPods version 1.9.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] IntelliJ IDEA Community Edition (version 2020.2.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 48.1.4
    • Dart plugin version 202.7206

[✓] VS Code (version 1.48.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.13.2

[✓] Connected device (4 available)
    • sdk gphone x86 arm (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • macOS (desktop)             • macos         • darwin-x64     • Mac OS X 10.15.6 19G2021
    • Web Server (web)            • web-server    • web-javascript • Flutter Tools
    • Chrome (web)                • chrome        • web-javascript • Google Chrome 85.0.4183.83

! Doctor found issues in 1 category.

kakyoism · 2020-09-08T13:53:27Z

I dug further and thought this might be related to #27086, but it turned out to be even worse, see below:

Attempt

To work around this issue, I thought about merging help_en.html and help_fr.html into a single html file and turn the href's into anchors so that I can bypass the local assets reference issue by jumping within the same html file.

In theory, this would work.

Trouble

However, to my surprise, this didn't work either! I still see blank pages when trying to go to the anchors. The same anchors work fine in an Electron test app and in the browsers.

This time I got an error in Android Studio's console

E/InputMethodManager(28987): b/117267690: Failed to get fallback IMM with expected displayId=259 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{b193667 VFEDHVC.. .F...... 0,0-2075,706}
I/chromium(28987): [INFO:CONSOLE(0)] "Not allowed to navigate top frame to data URL: data:text/html;charset=utf-8,%3C!DOCTYPE%20html%3E%0A%3Chtml%20xmlns=%22http://www.w3.org/1999/xhtml%22%20lang=%22%22%20xml:lang=%22%22%3E%0A%3Chead%3E%0A%20%20%3Cmeta%20charset=%22utf-8%22%20/%3E%0A%20%20%3Cmeta%20name=%22generator%22%20content=%22pandoc%22%20/%3E%0A%20%20%3Cmeta%20name=%22viewport%22%20content=%22width=device-width,%20initial-scale=1.0,%20user-scalable=yes%22%20/%3E%0A%20%20%3Ctitle%3E%20%3C/title%3E%0A%20%20%3Cstyle%3E%0A%20%20%20%20code%7Bwhite-space:%20pre-wrap;%7D%0A%20%20%20%20span....E4%BA%8E%3C/h1%3E%0A%3Ch3%20id=%22section%22%3E%3C/h3%3E%0A%3Ch2%20id=%22%E5%8A%A8%E5%90%AC-version-1.0%22%3E%E5%8A%A8%E5%90%AC%20version%201.0%3C/h2%3E%0A%3Cp%3ECopyright%C2%A9%202020%20NExT%20%E5%B7%A5%E4%BD%9C%E5%AE%A4%E7%BE%A4%3C/p%3E%0A%3Cp%3E%E7%89%88%E6%9D%83%E6%89%80%E6%9C%89%3C/p%3E%0A%3Cp%3E%E9%9A%90%E7%A7%81%E6%94%BF%E7%AD%96%3Cspan%20class=%22math%20inline%22%3E%C2%A0%C2%A0%C2%A0%C2%A0%3C/span%3E%E7%94%A8%E6%88%B7%E6%9C%8D%E5%8A%A1%E5%8D%8F%E8%AE%AE%3C/p%3E%0A%3C/body%3E%0A%3C/html%3E%0A#helpen", source: data:text/html;charset=utf-8,%3C!DOCTYPE%20html%3E%0A%3Chtml%20xmlns=%22http://www.w3.org/1999/xhtml%22%20lang=%22%22%20xml:lang=%22%22%3E%0A%3Chead%3E%0A%20%20%3Cmeta%20charset=%22utf-8%22%20/%3E%0A%20%20%3Cmeta%20name=%22generator%22%20content=%22pandoc%22%20/%3E%0A%20%20%3Cmeta%20name=%22viewport%22%20content=%22width=device-width,%20initial-scale=1.0,%20user-scalable=yes%22%20/%3E%0A%20%20%3Ctitle%3E%20%3C/title%3E%0A%20%20%3Cstyle%3E%0A%20%20%20%20code%7Bwhite-space:%20pre-wrap;%7D%0A%20%20%20%20span.smallcaps%7Bfont-variant:%20small-caps;%7D%0A%20%20%20%20span.underline%7Btext-decoration:%20underline;%7D%0A%20%20%20%20div.column%7Bdisplay:%20inline-block;%20vertical-align:%20top;%20width:%2050%25;%7D%0A%20%20%20%20div.hanging-indent%7Bmargin-left:%201.5em;%20text-indent:%20-1.5em;%7D%0A%20%20%3C/style%3E%0A%20%20%3C!--%5Bif%20lt%20IE%209%5D%3E%0A%20%20%20%20%3Cscript%20src=%22//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv-printshiv.min.js%22%3E%3C/script%3E%0A%20%20%3C!%5Bendif%5D--%3E%0A%20%20%3Cscript%20type=%22text/javascript%22%20src=%22help_lang.js%22%20type=%22module%22%3E%3C/script%3E%0A%20%20%3Cstyle%3E%0A%20%20/*%0A%20%20%20%20CAUTION:%20must%20use%20embedded%20style%20for%20standalone%20html%20with%20-s%0A%20%20*/%0A%20%20/***************%0A%20%20Global%0A%20%20***************/%0A%20%20/*%0A%20%20%20*%20I%20add%20this%20to%20html%20files%20generated%20with%20pandoc.%0A%20%20%20*/%0A%20%20html%20%7B%0A%20%20font-size:%20100%25;%0A%20%20overflow-y:%20scroll;%0A%20%20-webkit-text-size-adjust:%20100%25;%0A%20%20-ms-text-size-adjust:%20100%25;%0A%0A%20%20/*--scrollbarBG:%20%23CFD8DC;*/%0A%20%20--scrollbarBG:%20%232a2f39;%0A%20%20--thumbBG:%20%2390a4ae;%0A%20%20/*CAUTION:%20required%20for%20background%20parallax%20*/%0A%20%20height:%20100%25;%0A%20%20/*CAUTION%20end:%20required%20for%20background%20parallax%20*/%0A%20%20%7D%0A%20%20body%20%7B%0A%20%20color:%20%23e5e5e5;%0A%20%20font-family:%20Arial,%20Helvetica,%20sans-serif;%0A%20%20font-size:%2012px;%0A%20%20line-height:%201.7;%0A%20%20padding:%201em;%0A%20%20margin:%20auto;%0A%20%20max-width:%2042em;%0A%20%20/*CAUTION:%20required%20for%20background%20parallax%20*/%0A%20%20background:%20url('images/bg-logo.png')%20no-repeat%20top%20right,%20%232a2f39;%0A%20%20height:%20100%25;%0A%20%20background-attachment:%20fixed;%0A%20%20background-position:%20center;%0A%20%20background-repeat:%20no-repeat;%0A%20%20background-size:%20cover;%0A%20%20/*CAUTION%20end:%20required%20for%20background%20parallax*/%0A%20%20%7D%0A%20%20a%20%7B%0A%20%20color:%20%237c8694;%0A%20%20text-decoration:%20none;%0A%20%20%7D%0A%20%20a:visited%20%7B%0A%20%20color:%20%230072ae;%0A%20%20%7D%0A%20%20a:hover%20%7B%0A%20%20color:%20%2306e;%0A%20%20%7D%0A%20%20a:active%20%7B%0A%20%20color:%20%23faa700;%0A%20%20%7D%0A%20%20a:focus%20%7B%0A%20%20outline:%20thin%20dotted;%0A%20%20%7D%0A%20%20*::-moz-selection%20%7B%0A%20%20background:%20rgba(255,%20255,%200,%200.3);%
E/InputMethodManager(28987): b/117267690: Failed to get fallback IMM with expected displayId=259 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{b193667 VFEDHVC.. .F...... 0,0-2075,706}

Verdict

So to me this is beyond the fuss of running an http server to work around a very simple webpage doc. It is actually a much more serious bug to me.

pedromassangocode · 2020-09-08T14:10:19Z

Hi @kakyoism
I will close this as a duplicate of #27086 so that is easy to keep track of this issue. Please follow up on that issue for updates.

Thank you

kakyoism · 2020-09-08T14:35:09Z

Hi @kakyoism
I will close this as a duplicate of #27086 so that is easy to keep track of this issue. Please follow up on that issue for updates.

Thank you

@pedromassangocode May I suggest that this should stay as a separate issue? Please see my latest comment. The problem is that the webview does not even redirect correctly to the anchors in the same html file, while #27086 only talks about linking to a local asset from html. My finding is clearly a different symptom.

I just updated the title of the issue to emphasize the difference.

pedromassangocode · 2020-09-09T07:00:07Z

Hi @kakyoism
Thanks, will leave it opened for further investigation of this one.

e-oj · 2020-11-26T11:41:29Z

Any updates on this issue? I'm getting the same error when I set the initial url to a twitch oauth url: https://id.twitch.tv/oauth2/authorize?client_id=fx9d4xcwzswjzwt8cfzj8lh8paphdu&redirect_uri=https://www.eswagers.com/oauth&state=twitchAuth&scope=user:read:email&response_type=token

WebView authenticate({@required Function onDone}){
    String authUrl = '$baseUrl'
        '?client_id=$clientID'
        '&redirect_uri=$redirectUri'
        '&state=$state'
        '&scope=$scope'
        '&response_type=token';

    print('auth url: $authUrl');
    if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();

    return WebView(
      initialUrl: authUrl,
      onPageStarted: (url) async {
        if (url.startsWith(redirectUri)){
          String token = _getToken(url);
          onDone(token);
        }
      },
    );
  }

danagbemava-nc · 2021-08-11T09:53:16Z

The issue is reproducible on master 2.5.0-6.0.pre.46 and stable 2.2.3 with webview_flutter: ^2.0.12.

flutter doctor -v

[✓] Flutter (Channel master, 2.5.0-6.0.pre.46, on macOS 11.5.1 20G80 darwin-arm,
    locale en-GH)
    • Flutter version 2.5.0-6.0.pre.46 at /Users/nexus/dev/sdks/flutters
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 41ff30c871 (16 minutes ago), 2021-08-10 23:03:48 -0700
    • Engine revision 4fef55db10
    • Dart version 2.14.0 (build 2.14.0-385.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5.1, Build version 12E507
    • CocoaPods version 1.10.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2020.3)
    • 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 11.0.10+0-b96-7249189)

[✓] VS Code (version 1.59.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.25.0

[✓] Connected device (3 available)
    • sdk gphone64 arm64 (mobile) • emulator-5554                        •
      android-arm64  • Android 12 (API 31) (emulator)
    • iPhone 12 (mobile)          • F2592D43-5FE3-46BB-8A2B-A38BA468DCE9 • ios
      • com.apple.CoreSimulator.SimRuntime.iOS-14-5 (simulator)
    • Chrome (web)                • chrome                               •
      web-javascript • Google Chrome 92.0.4515.131

• No issues found!

[✓] Flutter (Channel stable, 2.2.3, on macOS 11.5.1 20G80 darwin-arm, locale
    en-GH)
    • Flutter version 2.2.3 at /Users/nexus/dev/sdks/flutter
    • Framework revision f4abaa0735 (6 weeks ago), 2021-07-01 12:46:11 -0700
    • Engine revision 241c87ad80
    • Dart version 2.13.4

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5.1, Build version 12E507
    • CocoaPods version 1.10.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2020.3)
    • 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 11.0.10+0-b96-7249189)

[✓] VS Code (version 1.59.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.25.0

[✓] Connected device (3 available)
    • sdk gphone64 arm64 (mobile) • emulator-5554                        •
      android-arm64  • Android 12 (API 31) (emulator)
    • iPhone 12 (mobile)          • F2592D43-5FE3-46BB-8A2B-A38BA468DCE9 • ios
      • com.apple.CoreSimulator.SimRuntime.iOS-14-5 (simulator)
    • Chrome (web)                • chrome                               •
      web-javascript • Google Chrome 92.0.4515.131

• No issues found!

giorgio79 · 2022-06-27T05:21:23Z

As a workaround until a fix, just use full hyperlinks, and capture them with navigationDelegate (seen in the example https://pub.dev/packages/webview_flutter/example)

stuartmorgan · 2023-05-21T17:38:20Z

Closing as obsolete; the error shown is specific to data URLs, and we now have API for loading files and assets that don't rely on data URL workarounds.

giorgio79 · 2023-05-21T18:29:08Z

So we can use anchor links?

github-actions · 2023-06-04T19:00:45Z

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 -v and a minimal reproduction of the issue.

pedromassangocode closed this as completed Sep 8, 2020

kakyoism mentioned this issue Sep 8, 2020

Load HTML from assets or local files #27086

Closed

kakyoism changed the title ~~Webview goes blank when redirecting to another local html file~~ Webview goes blank when redirecting to another local html file or anchors inside the same html file Sep 8, 2020

kakyoism mentioned this issue Sep 9, 2020

Local file into webview_flutter #27078

Closed

pedromassangocode reopened this Sep 9, 2020

goderbauer removed the framework flutter/packages/flutter repository. See also f: labels. label Sep 9, 2020

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danagbemava-nc added found in release: 2.2 Found to occur in 2.2 found in release: 2.5 Found to occur in 2.5 and removed found in release: 1.22 Found to occur in 1.22 labels Aug 11, 2021

stuartmorgan added the P2 Important issues not at the top of the work list label Aug 16, 2021

stuartmorgan removed the p: first party label Feb 10, 2023

stuartmorgan closed this as not planned Won't fix, can't repro, duplicate, stale May 21, 2023

github-actions bot locked as resolved and limited conversation to collaborators Jun 4, 2023

flutter-triage-bot bot added the package flutter/packages repository. See also p: labels. label Jul 5, 2023

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Webview goes blank when redirecting to another local html file or anchors inside the same html file #65379

Webview goes blank when redirecting to another local html file or anchors inside the same html file #65379

kakyoism commented Sep 8, 2020 •

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pedromassangocode commented Sep 9, 2020 •

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e-oj commented Nov 26, 2020

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giorgio79 commented May 21, 2023

github-actions bot commented Jun 4, 2023

Webview goes blank when redirecting to another local html file or anchors inside the same html file #65379

Webview goes blank when redirecting to another local html file or anchors inside the same html file #65379

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kakyoism commented Sep 8, 2020 • edited

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kakyoism commented Sep 8, 2020 • edited

pedromassangocode commented Sep 9, 2020 • edited

e-oj commented Nov 26, 2020

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kakyoism commented Sep 8, 2020 •

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kakyoism commented Sep 8, 2020 •

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pedromassangocode commented Sep 9, 2020 •

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giorgio79 commented Jun 27, 2022 •

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