This change introduces a few new bits of data on
Notification that will help the Notification Manager and
System UI route and display them more intelligently:
-> priority: an integer in a predefined range that
indicates the app's best guess as to the relative
importance (to the user, right now) of that information
-> kind: a tag (really, set of tags) indicating the general
type of notification (realtime, asynchronous, etc)
-> extras: a Bundle of additional key/value pairs
associated with this notification (currently @hidden)
The notification manager takes these data into account when
assigning to each notification a score which is passed with
the notification on to the system UI, where it can be used to
affect presentation. For example:
- Spammy apps (identified explicitly by the user or by
some other means) will have their notifications scored
very negatively by the notification manager, allowing
the UI to suppress them
- Notifications of higher score might be shown larger
or in a different way
- Very important notifications (indicated by a very high
score) might interrupt the user during an otherwise
important task (videochat, game, etc)
Implementation note: This replaces/extends the old internal
notion of "priority", which was mostly used to organize
ongoings and system notifications at the top of the panel.
Change-Id: Ie063dc75f198a68e2b5734a3aa0cacb5aba1ac39
2561b0b10a