Posted when the user changes the preferred content size setting.
SDKs
Framework
const NSNotificationThis notification is sent when the value in the preferred property changes. The user dictionary of the notification contains the UIContent key, which reflects the new setting.
UIApplicationPosted when the app’s status for downloading content in the background changes.
UIApplicationPosted when the app becomes active.
UIApplicationPosted when the frame of the status bar changes.
UIApplicationPosted when the orientation of the app’s user interface changes.
UIApplicationPosted when the app enters the background.
UIApplicationPosted immediately after the app finishes launching.
UIApplicationPosted when the app receives a warning from the operating system about low memory availability.
UIApplicationPosted when the protected files become available for your code to access.
UIApplicationPosted shortly before protected files are locked down and become inaccessible.
UIApplicationPosted when there is a significant change in time, for example, change to a new day (midnight), carrier time update, and change to or from daylight savings time.
UIApplicationPosted when the user presses the Home and Lock buttons to take a screenshot.
UIApplicationPosted when the app is about to change the orientation of its interface.
UIApplicationPosted when the app is about to change the frame of the status bar.
UIApplicationPosted shortly before an app leaves the background state on its way to becoming the active app.
UIApplicationPosted when the app is no longer active and loses focus.
UIApplicationPosted when the app is about to terminate.