ITADN

PDF does't render on Android but it works fine on web.

#1524Openniklasmiller12 创建于 2025-10-08
bug
N
niklasmiller12commented
Simply try this HTML with below piece of Code on Android and you will see a black page as result. But you will see the PDF as you run app on Flutter Web. Tried these two versions but result is same: fwfh_webview: ^0.15.3 fwfh_webview: ^0.15.6 ```<iframe class="bespokely-embed" src="https://dm6lfrfdj0fil.cloudfront.net/attachments/attachments/000/000/471/original/Markdown_Support.pdf" frameborder="0" onmousewheel="" style="background:transparent;"></iframe> ``` This HTML works perfectly on web but it displays a back page on Android. I have attached the Code sample below. ``` class PageContentEmbed extends StatelessWidget { final String htmlString; const PageContentEmbed(this.htmlString, {Key? key}) : super(key: key); @override Widget build(BuildContext context) { return HtmlWidget( htmlString, factoryBuilder: () => MyWidgetFactory(), ); } } class MyWidgetFactory extends WidgetFactory with WebViewFactory { // optional: override getter to configure how WebViews are built @override bool get webViewMediaPlaybackAlwaysAllow => true; @override String? get webViewUserAgent => 'My app'; } ``` ###Attached screenshot of my web app where it works fine and same behaviour is expected on Android <img width="1455" height="749" alt="Image" src="https://github.com/user-attachments/assets/5f8c69f0-02a8-4d32-ba6b-bae73c688f36" /> ###This is what I see on Android: <img width="284" height="609" alt="Image" src="https://github.com/user-attachments/assets/6f105b24-2667-45a1-88ef-572926684fed" /> <!-- Finally, paste the output of running `flutter doctor -v` here. --> ``` [✓] Flutter (Channel stable, 3.35.3, on macOS 26.0.1 25A362 darwin-arm64, locale en-PK) [244ms] • Flutter version 3.35.3 on channel stable at /Users/niklas/Documents/sdks/3.35.3/flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision a402d9a437 (5 weeks ago), 2025-09-03 14:54:31 -0700 • Engine revision ddf47dd3ff • Dart version 3.9.2 • DevTools version 2.48.0 • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-lldb-debugging [✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0-rc1) [998ms] • Android SDK at /Users/adnannazir/Library/Android/sdk • Emulator version 35.3.11.0 (build_id 12836668) (CL:N/A) • Platform android-36, build-tools 36.1.0-rc1 • ANDROID_HOME = /Users/adnannazir/Library/Android/sdk • Java binary at: /Users/niklas/Library/Java/JavaVirtualMachines/corretto-17.0.14/Contents/Home/bin/java This JDK is specified in your Flutter configuration. To change the current JDK, run: `flutter config --jdk-dir="path/to/jdk"`. • Java version OpenJDK Runtime Environment Corretto-17.0.14.7.1 (build 17.0.14+7-LTS) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 26.0.1) [942ms] • Xcode at /Applications/Xcode.app/Contents/Developer • Build 17A400 • CocoaPods version 1.16.2 [✓] Chrome - develop for the web [7ms] • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome [✓] Android Studio (version 2024.2) [7ms] • 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 21.0.4+-12422083-b607.1) [✓] Connected device (3 available) [6.1s] • V2249 (mobile) • 10FD8R02B40003D • android-arm64 • Android 15 (API 35) • macOS (desktop) • macos • darwin-arm64 • macOS 26.0.1 25A362 darwin-arm64 • Chrome (web) • chrome • web-javascript • Google Chrome 141.0.7390.55 [✓] Network resources [974ms] • All expected network resources are available. • No issues found! ```
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