IssueTracker

This is really critical. Every time I disconnect via "cast" my app crashes (or if I start casting with another app) my app crashes in the background because this is used by the cast API.

java.lang.NullPointerException: Attempt to write to field 'java.lang.ref.WeakReference android.support.v4.media.session.MediaSessionCompat$Callback.mSessionImpl' on a null object reference
                                                                          at android.support.v4.media.session.MediaSessionCompat$MediaSessionImplApi21.setCallback(MediaSessionCompat.java:2305)
                                                                          at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:267)
                                                                          at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:255)
                                                                          at com.google.android.gms.internal.zzxe.zzcb(Unknown Source)
                                                                          at com.google.android.gms.cast.framework.CastSession.zzbV(Unknown Source)
                                                                          at com.google.android.gms.cast.framework.CastSession.zza(Unknown Source)
                                                                          at com.google.android.gms.cast.framework.CastSession$zzb.zzbV(Unknown Source)

Hi,

Request you to provide below information

Please attach your sample android project which reproduces the issue, zip it and share(just to avoid the confusion between your sample code and the one we create to replicate the issue,sample code is requested here).

Explain expected and observed behavior? Attach screen shots for more clarity.

Explain the steps to reproduce the issue with your apk. Provide all necessary information to reproduce the issue.

Note: Please upload the attachments to google drive and share the folder to android-bugreport@google.com, then share the link here.

here you go
https://drive.google.com/drive/folders/0B4FfLhYv65yoVmJKd2c1QkdxMGs?usp=sharing

Expected behavior: don't crash.
Observed: NullPointerException

To reproduce, just run the application on Android API 23+

You can also reproduce the "Cast" issue using the UAMP sample which is found here:

https://github.com/googlesamples/android-UniversalMusicPlayer

Just update mobile/build.gradle to use 25.1.0 and the compile/target to 25. You just then need to start casting and then disconnect from cast. You don't even have to play content.