Instance Method


Tells the delegate that the activity could not be continued.


optional func application(_ application: UIApplication, didFailToContinueUserActivityWithType userActivityType: String, error: Error)



Your shared app object.


The activity type that was attempted.


An error object indicating the reason for the failure.


Use this method to let the user know that the specified activity could not be continued. If you do not implement this method, UIKit displays an error to the user with an appropriate message about the reason for the failure.

This method is not called if either application(_:willFinishLaunchingWithOptions:) or application(_:didFinishLaunchingWithOptions:) returns false.

See Also

Continuing User Activity and Handling Quick Actions

func application(UIApplication, willContinueUserActivityWithType: String) -> Bool

Tells the delegate if your app takes responsibility for notifying users when a continuation activity takes longer than expected.

func application(UIApplication, didUpdate: NSUserActivity)

Tells the delegate that the activity was updated.

func application(UIApplication, performActionFor: UIApplicationShortcutItem, completionHandler: (Bool) -> Void)

Called when the user selects a Home screen quick action for your app, except when you’ve intercepted the interaction in a launch method.