Unable to enable useAndroidX ad to use FileProvider

[mrdebug]

Testo di origine
The latest android api levels require FileProvider implementation to create and share files.
So the tutorial
https://developer.android.com/reference/androidx/core/content/FileProvider
does not work in Qt world because, after having added the section

    <provider
        android:name="androidx.core.content.FileProvider"
        android:authorities="org.qtproject.example"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
               android:name="android.support.FILE_PROVIDER_PATHS"
               android:resource="@xml/file_paths" />

    </provider>

after having added the file file_path.xml and

android.useAndroidX=true
android.enableJetifier=true

in the gradle.properties, during statup the application goes to crash with

E AndroidRuntime: FATAL EXCEPTION: main
E AndroidRuntime: Process: org.qtproject.example, PID: 2905
E AndroidRuntime: java.lang.RuntimeException: Unable to get provider androidx.core.content.FileProvider: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.FileProvider" on path: DexPathList[[zip file "/data/app/org.qtproject.example-KFKpcJodUkUxx65aKHw76A==/base.apk"],nativeLibraryDirectories=[/data/app/org.qtproject.example-KFKpcJodUkUxx65aKHw76A==/lib/arm, /data/app/org.qtproject.example-KFKpcJodUkUxx65aKHw76A==/base.apk!/lib/armeabi-v7a, /system/lib, /vendor/lib]]
E AndroidRuntime: 	at android.app.ActivityThread.installProvider(ActivityThread.java:6242)
E AndroidRuntime: 	at android.app.ActivityThread.installContentProviders(ActivityThread.java:5805)
E AndroidRuntime: 	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5722)
E AndroidRuntime: 	at android.app.ActivityThread.-wrap1(Unknown Source:0)

Have you got the same behaviour? Any idea to resolve?

[cristian-adam]

At https://bugreports.qt.io/browse/QTBUG-106495 I hacked CMake and created a Packageing.cmake file to package a Qt application without gradle.

I had to extract the androidx.core aar file and compile the classes.dex with the classes.jar from the aar file.

But ... it worked! 🎉 The above error went away!

[ekkescorner]

@mrdebug which Qt Version are you using ?

[mrdebug]

@ekkescorner Sorry but it is been a long time.
I don't remember the Qt version but I suppose the latest available version on february 2022 and Android 12 if i remember correctly.