(Need Help, please...)App Crashes at random point after updating to android 7.0(has log)

Unity Engine
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1

Hi, thank you for having an interest in the problem I’m going through.

I’m making a simple 2D game for Android platform and I suddenly have a critical issue after updating to android 7.0. It worked perfectly fine when I did build&play before I updated my phone to android 7.0. Now, just like I said in the title, the app crashes at random point and I can’t find out what’s going on. Even on the log, I can’t find any obvious reason why the app is crashing down.

here is my log when the app crashes

02-15 15:07:43.517 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.517 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.517 28773 28808 I Unity :
02-15 15:07:43.517 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.517 28773 28808 I Unity :
02-15 15:07:43.533 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.533 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.533 28773 28808 I Unity :
02-15 15:07:43.533 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.533 28773 28808 I Unity :
02-15 15:07:43.551 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.551 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.551 28773 28808 I Unity :
02-15 15:07:43.551 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.551 28773 28808 I Unity :
02-15 15:07:43.566 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.566 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.566 28773 28808 I Unity :
02-15 15:07:43.566 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.566 28773 28808 I Unity :
02-15 15:07:43.584 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.584 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.584 28773 28808 I Unity :
02-15 15:07:43.584 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.584 28773 28808 I Unity :
02-15 15:07:43.601 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.601 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.601 28773 28808 I Unity :
02-15 15:07:43.601 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.601 28773 28808 I Unity :
02-15 15:07:43.616 28773 28808 I Unity : NullReferenceException: Object reference not set to an instance of an object
02-15 15:07:43.616 28773 28808 I Unity : at Player.Update () [0x00000] in :0
02-15 15:07:43.616 28773 28808 I Unity :
02-15 15:07:43.616 28773 28808 I Unity : (Filename: Line: -1)
02-15 15:07:43.616 28773 28808 I Unity :
↑ the exception above did not matter at all before updatinng to android 7.0
(it happens because I put touch detect script under Update() method)

02-15 15:07:43.765 3641 21142 I ActivityManager: Process com.A37Games.Swinger (pid 28773) has died(125,1396)
↑ Don’t really get why this happens.
02-15 15:07:43.765 3641 21142 D ActivityManager: cleanUpApplicationRecord – 28773
02-15 15:07:43.770 3641 21142 W ActivityManager: Force removing ActivityRecord{952f36ad0 u0 com.A37Games.Swinger/com.unity3d.player.UnityPlayerActivity t73}: app died, no saved state
02-15 15:07:43.800 3641 21142 D ActivityManager: moveToFront() : reason=appDied setFocusedActivity isAttached=true TaskRecord{85abceed0 #35 A=com.sec.android.app.launcher U=0 StackId=0 sz=1}
02-15 15:07:43.800 3641 21142 D ActivityManager: setFocusStackUnchecked: reason=appDied setFocusedActivity focusCandidate=ActivityStack{1ceddcbd0 stackId=0, 2 tasks} caller=com.android.server.am.ActivityStack.moveToFront:873 com.android.server.am.ActivityStackSupervisor.moveActivityStackToFront:1994
02-15 15:07:43.809 3641 21142 D ActivityManager: resumeTopActivityInnerLocked() : #0 prevTask=null next=ActivityRecord{835b8a2d0 u0 com.sec.android.app.launcher/.activities.LauncherActivity t35} mFocusedStack=ActivityStack{1ceddcbd0 stackId=0, 2 tasks}
02-15 15:07:43.812 3641 21142 D ActivityManager: mActivityResumeBooster.acquire()
02-15 15:07:43.984 3641 4235 D ActivityManager: post active user change for 0 fullscreen true isHomeActivity() true
02-15 15:07:44.310 3641 3770 D ActivityManager: mActivityResumeBooster.release()
02-15 15:07:44.310 3641 3770 D ActivityManager: mActivityResumeBoosterTail.acquire()

I hope to get a good clue to solving this problem!
thank you for reading

2

something is missing reference… can you show the script?

add Debug.Logs to few lines there to see where it happens, or check your references before using them…

and/or try this in game console,

Or test with Unity Remote, if the error happens there,
i guess it doesnt happen in editor?

1 Like
3

Thanks, I fixed the null reference exception issue and it works again.
It worked fine even with the same exception before the update, so I thought it’s not the one causing the trouble, but just like you pointed out, It was, indeed, the cause.

I still don’t know why it worked fine in the previous version, but anyway thanks a lot!