Making a Kivy System app on Android

Let me explain what I am trying to do. I have an Orange Pi 5 Plus on which I am running Android 12. I did build a Kivy application that is working well (Kivy can be used to make Applications using Python). But some very specific reasons, I would like to make this application a system app.

When I installed the application normally with no special privileges, it works well. When I recompile Android12 and integrate the app on the product partition, it does not work.

When I launch the application, I first get an error message displayed on the scree saying: `Could not extract /product/priv-app/myapp/lib/arm64/libpybundle data`.

Then when I look at logcat, I see FATAL exception related to `UnsatisfiedLinkError: No implementation found for void org.libsdl.app.SDLActivity.nativeSetenv`.

Here is the log I get.

```
10-19 23:06:46.136 610 3321 I ActivityTaskManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=org.test.myapp/org.kivy.android.PythonActivity bnds=[1276,609][1592,761]} from uid 10079
10-19 23:06:46.171 610 667 I ActivityManager: Start proc 3338:org.test.myapp/1000 for pre-top-activity {org.test.myapp/org.kivy.android.PythonActivity}
--------- beginning of main
10-19 23:06:46.248 3338 3338 V GraphicsEnvironment: ANGLE Developer option for 'org.test.myapp' set to: 'default'
10-19 23:06:46.248 3338 3338 V GraphicsEnvironment: ANGLE GameManagerService for org.test.myapp: false
--------- beginning of crash
10-19 23:06:46.369 3338 3338 E AndroidRuntime: FATAL EXCEPTION: SDLActivity
10-19 23:06:46.369 3338 3338 E AndroidRuntime: Process: org.test.myapp, PID: 3338
10-19 23:06:46.369 3338 3338 E AndroidRuntime: java.lang.UnsatisfiedLinkError: No implementation found for void org.libsdl.app.SDLActivity.nativeSetenv(java.lang.String, java.lang.String) (tried Java_org_libsdl_app_SDLActivity_nativeSetenv and Java_org_libsdl_app_SDLActivity_nativeSetenv__Ljava_lang_String_2Ljava_lang_String_2)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at org.libsdl.app.SDLActivity.nativeSetenv(Native Method)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at org.kivy.android.PythonActivity$UnpackFilesTask.onPostExecute(PythonActivity.java:158)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at org.kivy.android.PythonActivity$UnpackFilesTask.onPostExecute(PythonActivity.java:102)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.AsyncTask.finish(AsyncTask.java:771)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.AsyncTask.access$900(AsyncTask.java:199)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:788)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:201)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.os.Looper.loop(Looper.java:288)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7870)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
10-19 23:06:46.369 3338 3338 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
10-19 23:06:46.370 610 2995 W ActivityTaskManager: Force finishing activity org.test.myapp/org.kivy.android.PythonActivity
10-19 23:06:46.393 610 1339 I ActivityManager: Process org.test.myapp (pid 3338) has died: fg TOP
10-19 23:06:46.393 610 1050 I WindowManager: WIN DEATH: Window{bf9e3f6 u0 org.test.myapp/org.kivy.android.PythonActivity}
10-19 23:06:46.393 610 1050 W InputManager-JNI: Input channel object 'bf9e3f6 org.test.myapp/org.kivy.android.PythonActivity (client)' was disposed without first being removed with the input manager!
10-19 23:06:46.394 610 702 I WindowManager: WIN DEATH: Window{138fccd u0 org.test.myapp/org.kivy.android.PythonActivity}
10-19 23:06:46.394 610 702 W InputManager-JNI: Input channel object '138fccd org.test.myapp/org.kivy.android.PythonActivity (client)' was disposed without first being removed with the input manager!
10-19 23:06:46.413 610 661 W InputManager-JNI: Input channel object 'af93b09 Splash Screen org.test.myapp (client)' was disposed without first being removed with the input manager!
10-19 23:06:46.871 610 660 W ActivityTaskManager: Activity top resumed state loss timeout for ActivityRecord{b390ac2 u0 org.test.myapp/org.kivy.android.PythonActivity t-1 f}}
```

Does anybody have a clue what is going wrong? Any help would be much appreciated. Thanks

I am expecting the application to run the same way as a user app.

Commencez par org.kivy.android.PythonActivity, en particulier UnpackFilesTask autour de la ligne 158, et comparez le packaging de product-partition avec le build normal de l’application utilisateur. Utilisez le logcat fourni et l’échec d’extraction de lib/arm64/libpybundle comme premières vérifications. Le travail est terminé lorsque l’application Android 12 installée par le système se lance et se comporte comme l’application installée par l’utilisateur qui fonctionne, sans le crash nativeSetenv.

Rédigé par le modèle d'indexation à partir du texte de l'issue.