Crash when sending a video to background

[cemrich]

There are quite a few crash reports with following stack trace:

java.lang.RuntimeException: Unable to start service de.christinecoenen.code.zapp.app.player.BackgroundPlayerService@684175a with Intent { act=de.christinecoenen.code.zapp.app.mediathek.controller.action.START_IN_BACKGROUND cmp=de.christinecoenen.code.zapp/.app.player.BackgroundPlayerService }: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Intent.resolveTypeIfNeeded(android.content.ContentResolver)' on a null object reference
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4880)
at android.app.ActivityThread.-$$Nest$mhandleServiceArgs(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2330)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:207)
at android.os.Looper.loop(Looper.java:296)
at android.app.ActivityThread.main(ActivityThread.java:8227)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:576)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Intent.resolveTypeIfNeeded(android.content.ContentResolver)' on a null object reference
at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:543)
at android.app.PendingIntent.getActivity(PendingIntent.java:530)
at android.app.PendingIntent.getActivity(PendingIntent.java:494)
at de.christinecoenen.code.zapp.app.player.BackgroundPlayerService.getNotificationCLickedPendingIntent(Unknown Source:35)
                                                                   handleStartInBackground
                                                                   handleIntent
                                                                   onStartCommand
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4862)
... 9 more

BackgroundPlayerService::handleStartInBackground gets only called when a user is sending video playback to the background. The trace above indicates that foregroundActivityIntent is null when getNotificationCLickedPendingIntent. However, I cannot reproduce this issue on my devices.