Instance Method


Decodes and restores state-related information for the view controller.


func decodeRestorableState(with coder: NSCoder)



The coder object to use to decode the state of the view.


Do not call this method directly. The system calls this method during the state restoration process so that you can restore your view controller to its previous state.

If your app supports state restoration, override this method for any view controllers for which you also overrode the encodeRestorableState(with:) method. Your implementation of this method should use any saved state information to restore the view controller to its previous configuration. If your encodeRestorableState(with:) method called super, this method should similarly call super at some point in its implementation.

See Also

Managing State Restoration

Restoring Your App’s State

Preserve and restore information related to the user’s current activities.

var restorationIdentifier: String?

The identifier that determines whether the view controller supports state restoration.

var restorationClass: UIViewControllerRestoration.Type?

The class responsible for recreating this view controller when restoring the app'€™s state.

func encodeRestorableState(with: NSCoder)

Encodes state-related information for the view controller.

func applicationFinishedRestoringState()

Called on restored view controllers after other object decoding is complete.