Global Variable


Posted when the app’s status for downloading content in the background changes.


const NSNotificationName UIApplicationBackgroundRefreshStatusDidChangeNotification;


The system sends this notification when the backgroundRefreshStatus property of the app object changes. That property can change in response to the user disabling multitasking support for the app. The object of the notification is the UIApplication object. There is no userInfo dictionary.

See Also

Managing Background Execution


Indicates whether the app can refresh content when running in the background.


Constants indicating whether background execution is enabled for the app.

- beginBackgroundTaskWithName:expirationHandler:

Marks the beginning of a new long-running background task with the specified name.

- beginBackgroundTaskWithExpirationHandler:

Marks the beginning of a new long-running background task.

- endBackgroundTask:

Marks the end of a specific long-running background task.


A unique token that identifies a request to run in the background.


The amount of time the app has to run in the background.