LibrePods v0.2.6 crashes immediately on launch on rooted OnePlus 6 — ClassNotFoundException: pathInterpolator

[DanielReyesDev]

App version

v0.2.6

App source

GitHub

Device

OnePlus 6

Android / OS version

LineageOS Enchilada (Android 14)

Root / hook method

Magisk + Xposed

AirPods model

AirPods Pro 2 (Lightning)

AirPods firmware

No response

What happened

LibrePods v0.2.6 crashes immediately on launch on rooted OnePlus 6 — ClassNotFoundException: pathInterpolator

Description

LibrePods v0.2.6 installs successfully as a Magisk system/privileged app, but the application immediately crashes when launched.

The APK is installed and recognized correctly by Android:

package:me.kavishdevar.librepods

and:

package:/system/priv-app/LibrePods/LibrePods.apk

The activity also resolves correctly:

priority=0 preferredOrder=0 match=0x108000 specificIndex=-1 isDefault=false
me.kavishdevar.librepods/.MainActivity

The Magisk module itself appears to be mounted correctly.

However, launching LibrePods results in an immediate crash before the UI becomes usable.

Environment

• Device: OnePlus 6
• Android: rooted / Magisk
• ROM: LineageOS-based
• Locale: es_MX
• LibrePods: v0.2.6
• versionCode: 46
• Installation method: Magisk module / system privileged app
• Architecture: ARM64
• Target SDK reported by Android: 35

module.prop:

id=librepods
name=LibrePods
version=v0.2.6
versionCode=46
author=@kavishdevar
description=Installs LibrePods as a system app for granting BLUETOOTH_PRIVILEGED and MODIFY_PHONE_STATE permission for better integraion with android.

The APK is located at:

/system/priv-app/LibrePods/LibrePods.apk

and has the following SELinux context:

u:object_r:system_file:s0

Crash

The relevant stack trace is:

FATAL EXCEPTION: main
Process: me.kavishdevar.librepods, PID: 7878

java.lang.RuntimeException:
Unable to start activity
ComponentInfo{me.kavishdevar.librepods/me.kavishdevar.librepods.MainActivity}:

android.content.res.Resources$NotFoundException:
Drawable me.kavishdevar.librepods:interpolator/btn_checkbox_checked_mtrl_animation_interpolator_1
with resource ID #0x7f0c0001

The important underlying exception is:

Caused by: java.lang.ClassNotFoundException:
Didn't find class "pathInterpolator"
on path:
DexPathList[
    [zip file "/system/priv-app/LibrePods/LibrePods.apk"],
    nativeLibraryDirectories=[
        /system/priv-app/LibrePods/lib/arm64,
        /system/priv-app/LibrePods/LibrePods.apk!/lib/arm64-v8a,
        /system/lib64,
        /system/system_ext/lib64
    ]
]

Full relevant portion:

08-15 13:32:39.077 E AndroidRuntime:
FATAL EXCEPTION: main

08-15 13:32:39.077 E AndroidRuntime:
Process: me.kavishdevar.librepods, PID: 7878

08-15 13:32:39.077 E AndroidRuntime:
java.lang.RuntimeException:
Unable to start activity ComponentInfo{
me.kavishdevar.librepods/me.kavishdevar.librepods.MainActivity}:

android.content.res.Resources$NotFoundException:
Drawable me.kavishdevar.librepods:interpolator/
btn_checkbox_checked_mtrl_animation_interpolator_1
with resource ID #0x7f0c0001

...

08-15 13:32:39.079 E AndroidRuntime:
Caused by: java.lang.ClassNotFoundException:
Didn't find class "pathInterpolator"
on path: DexPathList[
    [zip file "/system/priv-app/LibrePods/LibrePods.apk"],
    nativeLibraryDirectories=[
        /system/priv-app/LibrePods/lib/arm64,
        /system/priv-app/LibrePods/LibrePods.apk!/lib/arm64-v8a,
        /system/lib64,
        /system/system_ext/lib64
    ]
]

08-15 13:32:39.085 W ActivityTaskManager:
Force finishing activity
me.kavishdevar.librepods/.MainActivity

08-15 13:32:39.103 I ActivityManager:
Process me.kavishdevar.librepods (pid 7878) has died

Additional PackageManager warning

Immediately before the crash, Android also reports:

W PackageManager:
Failure retrieving resources for me.kavishdevar.librepods:

Drawable me.kavishdevar.librepods:interpolator/
btn_checkbox_checked_mtrl_animation_interpolator_1
with resource ID #0x7f0c0001

This appears to correlate directly with the subsequent Resources$NotFoundException.

Installation verification

The Magisk module is present:

/data/adb/modules/librepods/

with:

/data/adb/modules/librepods/module.prop
/data/adb/modules/librepods/system/priv-app/LibrePods/LibrePods.apk

The mounted system APK is:

12633853 bytes

and Android resolves it normally:

adb shell pm list packages | grep -i librepods

package:me.kavishdevar.librepods

adb shell pm path me.kavishdevar.librepods

package:/system/priv-app/LibrePods/LibrePods.apk

adb shell cmd package resolve-activity --brief me.kavishdevar.librepods

priority=0 preferredOrder=0 match=0x108000 specificIndex=-1 isDefault=false
me.kavishdevar.librepods/.MainActivity

So this does not appear to be a simple failure to install/mount/register the APK.

Possible cause

The crash seems related to an Android resource generated by Material/AndroidX:

btn_checkbox_checked_mtrl_animation_interpolator_1

which eventually attempts to inflate:

pathInterpolator

as an XML drawable/interpolator class.

Android's DrawableInflater reaches:

DrawableInflater.inflateFromClass()

and fails with:

ClassNotFoundException: Didn't find class "pathInterpolator"

This may indicate one of the following:

1. An incorrectly generated/packaged interpolator XML resource.
2. A resource compatibility problem between the APK's Material/AndroidX dependencies and the Android framework on this device.
3. An Android build/resource-processing issue where pathInterpolator is emitted in a form that this Android version cannot resolve.
4. A case-sensitivity or resource-class-name issue (pathInterpolator vs the framework class expected by the device).
5. A resource merge/shrinking/packaging problem introduced in v0.2.6.
6. A device/ROM-specific incompatibility with the version of Material Components/AppCompat used by v0.2.6.

I would particularly investigate why an interpolator resource is being inflated through DrawableInflater and why the XML references pathInterpolator instead of resolving to the appropriate framework/AndroidX class.

Regression

Older LibrePods versions, including the previous alpha version I was using, did not exhibit this immediate startup crash on this same device/environment.

The previous LibrePods alpha was usable on the same rooted OnePlus 6, including the Hearing Aid / Act as an Apple Device functionality.

The problem appeared after moving to v0.2.6.

Reproduction

1. Root a OnePlus 6 with Magisk.
2. Install LibrePods v0.2.6 as the provided Magisk module.
3. Reboot.
4. Verify:

adb shell pm list packages | grep -i librepods
adb shell pm path me.kavishdevar.librepods

5. Launch LibrePods.
6. The app immediately closes.
7. Check:

adb logcat | grep -iE 'librepods|AndroidRuntime|FATAL EXCEPTION|Resources\$NotFoundException|ClassNotFoundException'

8. Observe the pathInterpolator / btn_checkbox_checked_mtrl_animation_interpolator_1 exception.

Request

Could you please investigate whether the btn_checkbox_checked_mtrl_animation_interpolator_1 resource or its generated XML changed in v0.2.6?

It would also be useful to verify the Material/AndroidX dependency versions and the final packaged resource inside the APK.

In particular, I would like to know whether the following resource is expected to contain something similar to:

<pathInterpolator ... />

and whether that is compatible with the Android framework/resource inflater on older Android/LineageOS devices.

If this is a build/resource packaging issue, could it be fixed in the next release?

I can provide:

• full adb logcat
• bugreport.zip
• APK/resource inspection
• aapt2 dump resources output
• APK res/ contents
• device/build information
• Magisk module contents

if needed.

Additional note

The crash occurs during the startup of MainActivity, before LibrePods reaches a usable UI.

This does not currently appear to be related to Bluetooth, Hearing Aid, Magisk permissions, or the privileged-app installation itself. The APK is correctly mounted and resolved by Android, but resource inflation fails during activity startup.

I am keeping the Hearing Aid/audiogram behavior as a separate issue so this report can focus specifically on the v0.2.6 startup crash.

Logs

No response

Additional context

No response

[kavishdevar]

Try installing the apk after the root module