I am currently developing an app with network requests. However, even though I requested once, there were two results that arrived. (Checked with logcat) After that, I began to study about Android Lifecycles, and I added logs to ALL of the Lifecycle functions:

Ex) onResume()

override fun onResume() {
    Log.d("LIFECYCLE", "OnResume Started")
    super.onResume()
    Log.d("LIFECYCLE", "OnResume Ended")
}

After printing the logcat, I got a result of this:

 1. D/LIFECYCLE: OnCreate Started
 2. W/<appname>: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (unsupported, reflection, allowed)
 3. W/<appname>: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (unsupported, reflection, allowed)
 4. D/LIFECYCLE: OnCreate Ended
 5. D/THREAD: Thread Started -> The network request thread
 6. W/<appname>: Accessing hidden method Ljava/lang/invoke/MethodHandles$Lookup;-><init>(Ljava/lang/Class;I)V (unsupported, reflection, allowed)
 7. D/LIFECYCLE: OnStart Started
 8. I/ActivityThread: Schedule relaunch activity: <PACKAGE_NAME>.activities.MainActivity
 9. D/LIFECYCLE: OnStart Ended
10. D/LIFECYCLE: OnResume Started
11. D/LIFECYCLE: OnResume Ended
12. W/<appname>: Accessing hidden method Ldalvik/system/CloseGuard;->get()Ldalvik/system/CloseGuard; (unsupported,core-platform-api, reflection, allowed)
13. W/<appname>: Accessing hidden method Ldalvik/system/CloseGuard;->open(Ljava/lang/String;)V (unsupported,core-platform-api, reflection, allowed)
14. W/<appname>: Accessing hidden method Ldalvik/system/CloseGuard;->warnIfOpen()V (unsupported,core-platform-api, reflection, allowed)
15. D/LIFECYCLE: OnPause Started
16. D/LIFECYCLE: OnPause Ended
17. D/LIFECYCLE: OnDestroy Started
18. D/LIFECYCLE: OnDestroy Ended
19. D/LIFECYCLE: OnCreate Started
20. D/LIFECYCLE: OnCreate Ended
21. D/THREAD: Thread Started
22. D/LIFECYCLE: OnStart Started
23. D/LIFECYCLE: OnStart Ended
24. D/LIFECYCLE: OnResume Started
25. D/LIFECYCLE: OnResume Ended
26. D/THREAD: Thread Ended
27. D/THREAD: Thread Ended
...

D/Thread in the logcat is the network request thread that I made in onCreate()

As you can see in line 8, There is a log from ActivityThread where it says "Schedule relaunch activity". However, I did not restart nor relaunched my activity. The app is running smooth without any restarting animation or any lags while the log is printing.

I tried solutions like adding null check to savedInstanceState and run the network thread when it is null, but somehow the network request results and the UI changing commands that I made inside the thread reflects in the second request, so this was no good.

THE MOST IMPORTANT PART: To find what went wrong, I opened an emulator and tested my app. Surprisingly, when I open the app with the emulator, there is no activity relaunch log and no duplicate response. It works perfectly as I programmed.

The device I struggled with is Pixel 6 Pro (Physical Device). I want to make my app work in this typical device.

How can it be different? Why is this happening? Are there any solutions to not relaunch the activity by itself?