Anyone please help me about this issue? i am getting this issue around 500times in a week.

[ishroid]

Fatal Exception: java.lang.InternalError: Thread starting during runtime shutdown
       at java.lang.Thread.nativeCreate(Thread.java)
       at java.lang.Thread.start(Thread.java:733)
       at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:970)
       at java.util.concurrent.ThreadPoolExecutor.ensurePrestart(ThreadPoolExecutor.java:1611)
       at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:342)
       at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:562)
       at java.util.concurrent.ScheduledThreadPoolExecutor.execute(ScheduledThreadPoolExecutor.java:654)
       at com.onesignal.OneSignalPrefs.saveString(OneSignalPrefs.java:105)
       at com.onesignal.OneSignalStateSynchronizer$UserState.persistState(OneSignalStateSynchronizer.java:423)
       at com.onesignal.OneSignalStateSynchronizer$UserState.persistStateAfterSync(OneSignalStateSynchronizer.java:469)
       at com.onesignal.OneSignalStateSynchronizer$UserState.access$700(OneSignalStateSynchronizer.java:236)
       at com.onesignal.OneSignalStateSynchronizer.syncUserState(OneSignalStateSynchronizer.java:587)
       at com.onesignal.OneSignalStateSynchronizer$NetworkHandlerThread$1.run(OneSignalStateSynchronizer.java:538)
       at android.os.Handler.handleCallback(Handler.java:789)
       at android.os.Handler.dispatchMessage(Handler.java:98)
       at android.os.Looper.loop(Looper.java:164)
       at android.os.HandlerThread.run(HandlerThread.java:65)

[jkasten2]

@Ishratkhan A Thread starting during runtime shutdown should be extremely rare as this could only happen when the whole process for the app is about to be stoped.

Do you have anything in your code force killing your app? Such as android.os.Process.killProcess?

[ishroid]

No! we don't have anything to kill process, we made some changes in our app, update you on this issue after few days.

Thank you

[jkasten2]

Could you share what Android versions you seen the error on? Do you have have a log with the stack trace of all other threads at the time of the crash?

[ishroid]

Yes, i got it,
1878_crash_5A8E64FC01EC00012F7EDC3B43DBE2C2_DNE_0_v2.txt

[jkasten2]

@Ishratkhan Thanks for the full log with all threads. I wasn't able to find anything that would create this error from it. By chance are you using Thread.setDefaultUncaughtExceptionHandler in your app code in-addition to Crashlytics?

Going to merge this one into issue #443 as it is the same stack trace. Please follow up with us there. Thanks.