Unable to display PDF

[Astar-Li]

[develtar]

@Astar-Li could you provide the following info, please?

• have you tried the sample app first?

• have you requested access to permissions via the permissions manager, like in the sample?

• which qt version are you using?

• on which android version are you testing the library?

[Astar-Li]

@Astar-Li could you provide the following info, please?

• have you tried the sample app first?
• have you requested access to permissions via the permissions manager, like in the sample?
• which qt version are you using?
• on which android version are you testing the library?

@develtar Dear develtar

• have you requested access to permissions via the permissions manager, like in the sample? Yes，I have tried the sample app first.It's run ok on Android 7 8 9 10 11 12 13 But after I put targetSdkVersion = 33, the above inaccessibility situation will result

• have you requested access to permissions via the permissions manager, like in the sample? Yes, I applied for permission I even tested the pdf file inside the app because it doesn't require permissions, but the results are still the same

• which qt version are you using? QT5.15.2 NDK ：21.3.6528147

• on which android version are you testing the library? API 33, Android 13

---

Here are the solutions I tried setAllowFileAccess Official website document explanation: Enables or disables file access within WebView. Note that this enables or disables file system access only. Assets and resources are still accessible using file:///android_asset and file:///android_res.

https://bugreports.qt.io/browse/QTBUG-97487

[Astar-Li]

But so far, I haven't found a way to setAllowFileAccess

[Astar-Li]

But so far, I haven't found a way to setAllowFileAccess

From API level 30 the native Android WebView will have file access disabled by default.

[develtar]

Thank you for the info!

I'll give it a look this weekend :)

[develtar]

@Astar-Li

• which JDK version are you using?
• which SDK version are you using?

[Astar-Li]

@Astar-Li

• which JDK version are you using?
• which SDK version are you using?

JDK:11.0.2

SDK :9.0

Android build platform SDK: android-33

[Astar-Li]

@develtar But my tests show that this is only related to targetSdkVersion, which appears when targetSdkVersion>= 30

[develtar]

@Astar-Li i haven't yet found a workaround to this issue: maybe the webview settings could be set natively using the QAndroidJniObject class, and accessing directly to the WebSettings method setAllowFileAccess.

Some of the links i consulted are the following:

• https://codereview.qt-project.org/c/qt/qtwebview/+/401659
• https://github.com/2gis/2gisqt5android/blob/master/qtandroidextras/src/androidextras/jni/qandroidjniobject.cpp
• https://stuff.mit.edu/afs/athena/software/texmaker_v5.0.2/qt57/doc/qtandroidextras/qtandroid.html
• https://stackoverflow.com/questions/75940926/opening-the-android-settings-through-qandroidjniobject
• https://docplayer.net/36769499-Practical-qt-on-android-jni.html
• https://stackoverflow.com/questions/27092044/android-art-runtime-check-jni-cc-error-on-package-name
• https://doc.qt.io/qt-6/qjniobject.html

If in the meantime you found a workaround, let me know or feel free to make a merge request!

[develtar]

@Astar-Li have you found a workaround?