Crash: Assertion Error in DefaultPlaybackSessionManager.updateCurrentSession

[esafirm]

Version

Media3 1.6.0

More version details

No response

Devices that reproduce the issue

Various devices, mostly Android 15

Devices that do not reproduce the issue

We cannot reproduce this ourself actually

Reproducible in the demo app?

No

Reproduction steps

This might be more like a question ticket rather than a bug report since we do not know how to reproduce this and we're hitting a wall. But, the code declare that this situation should not happen in the first place.

So I have a couple of questions:

1. What's a possible cause that this can happen?
2. Is there a way to replace the DefaultPlaybackSessionManager? If there's what's the easiest way?

Thank you.

Expected result

Not crashing.

Actual result

Assertion error because null object. Here's the stacktrace:

    Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass()' on a null object reference
       at androidx.media3.common.util.Assertions.checkNotNull(Assertions.java:155)
       at androidx.media3.exoplayer.analytics.DefaultPlaybackSessionManager.updateCurrentSession(DefaultPlaybackSessionManager.java:250)
       at androidx.media3.exoplayer.analytics.DefaultPlaybackSessionManager.updateSessionsWithTimelineChange(DefaultPlaybackSessionManager.java:196)
       at androidx.media3.exoplayer.analytics.MediaMetricsListener.maybeAddSessions(MediaMetricsListener.java:330)
       at androidx.media3.exoplayer.analytics.MediaMetricsListener.onEvents(MediaMetricsListener.java:311)
       at androidx.media3.exoplayer.analytics.DefaultAnalyticsCollector.lambda$setPlayer$1(DefaultAnalyticsCollector.java:137)
       at androidx.media3.common.util.ListenerSet$ListenerHolder.iterationFinished(ListenerSet.java:353)
       at androidx.media3.common.util.ListenerSet.handleMessage(ListenerSet.java:297)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:273)
       at android.os.Looper.loop(Looper.java:363)
       at android.app.ActivityThread.main(ActivityThread.java:10060)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:632)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
        

Media

Bug Report

• You will email the zip file produced by adb bugreport to android-media-github@google.com after filing this issue.

[esafirm]

Disabling the MediaMetricListener for now with setUsePlatformDiagnostics(false)

[tonihei]

What's a possible cause that this can happen?

Thanks for reporting, I can see a potential code path that might trigger this issue with the stack trace above. Will fix it and then it should be fixed the upcoming 1.9.0 release.

[tonihei]

Should be fixed by the commit above