If I send a Parcelable object to another part of my program via LocalBroadcastManager -is the Parcelable immutable then?
That is not guaranteed. In fact, AFAIK, it does not happen at all for local broadcasts.
I guess Parcelable is a "deepcopy" serialization mechanism and not pass by reference
Only across process boundaries. That happens to include things like startActivity()
for another one of your activities, because those involve IPC. But the Intent
object -- and its extras -- is simply passed around your process with LocalBroadcastManager
. I see no place where Intent
would be forced to make a copy.