Open Radar

 
Summary:
UIApplicationDidEnterBackgroundNotification incorrectly sent twice when an app with a background task is killed from Springboard

Steps to Reproduce:
Set up an app that has some background work to do, is capturing audio or otherwise running in the background.
Background it -- it receives UIApplicationDidEnterBackgroundNotification.
Kill the app from Springboard before it finishes its background work -- it receives another UIApplicationDidEnterBackgroundNotification

Expected Results:
Already backgrounded apps should not be sent a redundant backgrounding notification. If there is a need to tell background apps that they've been told to knock it off, there should be another notification for this.

Actual Results:
Application lifecycle listeners have to be wary and not mess stuff up when they are lied to by the system.

Regression:
Unknown

Notes: