Ios – application(…continue userActivity…) method not called in ios 13


Hi I'm making ios app using UniversalLink.

Universal Link works fine, but callback method is not called.

My AppDelegate.swift is below.

import UIKit

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        return true

    func application(_ application: UIApplication,
                     willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        return true

    // this method not called!!
    func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
        return true

The method is called in iOS 12 Simulator.

So, the problem is occured only in iOS 13.

Only in iOS13 this error is printed in console.

Can't end BackgroundTask: no background task exists with identifier 1 (0x1), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.

So, this may be cause of the problem.

I'd really appreciate someone help

Best Solution

I had a similar issue with SceneDelegate and universal links where I could not get to NSUserActivity when the app was just launched (in this case Background NFC reading in ios 13).

As mentioned in the answer by @Jan, continue userActivity is now in the SceneDelegate.

If the app is running or in the background ie. closed, a universal link will fire the scene(_:continue:) delegate.

If the app is not in the background, a universal link won't fire up from the scene(_:continue:) delegate. Instead, the NSUserActivity will be available from scene(_:willConnectTo:options:). eg.

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    if let userActivity = connectionOptions.userActivities.first {
        debugPrint("got user activity")
Related Question