Type Property

didEnterBackgroundNotification

Posted when the app enters the background.

Declaration

class let didEnterBackgroundNotification: NSNotification.Name

Discussion

The object of the notification is the UIApplication object. There is no userInfo dictionary.

See Also

Responding to App Life-Cycle Events

func applicationDidBecomeActive(UIApplication)

Tells the delegate that the app has become active.

func applicationWillResignActive(UIApplication)

Tells the delegate that the app is about to become inactive.

func applicationDidEnterBackground(UIApplication)

Tells the delegate that the app is now in the background.

func applicationWillEnterForeground(UIApplication)

Tells the delegate that the app is about to enter the foreground.

func applicationWillTerminate(UIApplication)

Tells the delegate when the app is about to terminate.

class let willEnterForegroundNotification: NSNotification.Name

Posted shortly before an app leaves the background state on its way to becoming the active app.

class let willResignActiveNotification: NSNotification.Name

Posted when the app is no longer active and loses focus.

class let willTerminateNotification: NSNotification.Name

Posted when the app is about to terminate.