Kotlin How do I update the throughput when the application is closing? [closed]

Question

I want to update the data in Firebase when the application terminates. How can I do that

I used onDestroy and onPause but they did not do the function I wanted. When I use OnPause, every time the application goes to the background, it does the update operation, and I don't want that either.

// This onDestroy  didn't work OnPause, every time the application goes to the background

override fun onDestroy() {
    super.onDestroy()
    Log.d("ClosingService", "Service is destroyed. Updating user data...")
    Update_User_Data(dataManager.userDataList)
}


 fun Update_User_Data(newDataList : ArrayList<User_Structure>){
            val tasks = newDataList.map { i ->
            val userRef = db.collection("users").document(i.userId)
            userRef.update(mapOf(
                "username" to i.username,
                "favorites" to i.favorites,
                "parts" to i.parts,
                "points" to i.points
            ))
            }
            Tasks.whenAllComplete(tasks).addOnCompleteListener {
                if (it.isSuccessful) {
                    println("All user data updated successfully!")
                } else {
                    println("Error updating some user data.")
                }
            }
    }

Answer 1

I used OnDestroy and OnPouse but they did not do the function I wanted.

Please bear in mind, that the onDestroy is not always called. So you cannot rely on that. As @MarsAtomic already mentioned in his comment, you should consider using onSaveInstanceState() instead which is:

Called to retrieve per-instance state from an activity before being killed so that the state can be restored in onCreate(Bundle) or onRestoreInstanceState(Bundle).