IssueTracker

According to CarMediaService's implementation, new user will not be initiated before the new user gets unlocked. So the primary source will not be updated to reflect the new user's previous session.

But there are cases that unlocking a user took some extended time. And in this period before new user unlocked, the primary source in CarMediaService would still be previous user's last source. At this time if we launch an media app like MediaCenter from the new user, it will get previous user last source instead of the current user's last source as primary source.

My question is:
1. The CarMediaService knows that user switching happened but why do we need to hold the user initialization in it until new user gets unlocked?
2. The other question is more about the event USER_UNLOCKED in general. Should we allow media apps like MediaCenter to be able to launch for a user that is not unlocked yet?

Thank you very much!