What is an outstate bundle?

I hate to do this because the post is so old, but I can easily see another person asking this same question, so I'm going to answer it for that potential future coder.

When the instance state is saved, meaning, your app calls onSaveInstanceState() because another app came to the foreground or something similar, that method takes a Bundle object which contains the current state of the app to save. Any information you want to make sure is saved temporarily can be put into that Bundle in a Parcelable form. The Bundle parameter taken by onSaveInstanceState() is called outstate because it's the state going out (being saved, not read).