IssueTracker

Hello, I am an Android developer from Duolingo. Our App encountered a massive crash (android.content.res.Resources$NotFoundException) on Android 15. (More specifically, 100% on Android 15, 97% on Google devices). We discovered this from Firebase. We have not been able to reproduce this crash. Spot checked logs of some users who encountered this crash. It just randomly happened. Most users only experienced the crash once and were able to proceed afterward.

For now, our crash rate on Android 15 are 25-30 times higher compared to Android 14. And the top crashes on Android 15 are all related with the Resources$NotFoundException. Hope you can help solve this issue as soon as possible.

* Are you an Android developer?" 
Yes

* Which Android Beta build are you using? See Settings > About phone > Build number 
This crash happened on various devices. 100% on Android 15, 97% on Google devices.

* Is this a regression from Android 15? 
Yes

* What device are you using? 
I tried, but failed to reproduce on Emulator. Have not been able to find a device yet.

* What are the steps to reproduce the problem?
I spot checked logs of some users who encountered this crash. It just randomly happened. Most users only experienced the crash once and were able to proceed afterward.

* Issue Category e.g. Framework (platform), NDK (platform), Hardware (CPU, GPU, Sensor, Camera), ART (platform), Runtime Permissions etc
Framework (platform)

* What was the expected result?
This crash doesn't happen any more.

* Can you provide the API document where this expected behavior is explained?

* What was the actual result?
This crash happened randomly on user devices.

* Relevant logcat output.
Attach the sample crash stack trace here:

    Fatal Exception: android.content.res.Resources$NotFoundException: String resource ID #0x7f130002
       at android.content.res.Resources.getText(Resources.java:466)
       at com.duolingo.core.localization.LocalizationResources.getLanguageId(LocalizationResources.kt:27)
       at com.duolingo.core.localization.LocalizationResources.getQuantityString(LocalizationResources.kt:167)
       at com.duolingo.core.ui.TimerViewTimeSegment$Companion.millisToCountdownTimerTextTruncated(TimerViewTimeSegment.java:166)
       at com.duolingo.home.path.ui.viewholder.ChestViewHolder$Companion.bind$lambda$17(ChestViewHolder.java:216)
       at com.duolingo.core.ui.JuicyTextTimerView.updateViewText(JuicyTextTimerView.java:77)
       at com.duolingo.core.ui.JuicyTextTimerView.access$updateViewText(JuicyTextTimerView.java:12)
       at com.duolingo.core.ui.JuicyTextTimerView$startIntervalTimeCounter$countDownTimer$1.onTick(JuicyTextTimerView.kt:136)
       at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:145)
       at android.os.Handler.dispatchMessage(Handler.java:107)
       at android.os.Looper.loopOnce(Looper.java:232)
       at android.os.Looper.loop(Looper.java:317)
       at android.app.ActivityThread.main(ActivityThread.java:8705)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:580)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:886)