iOS：如果应用程序未打开，苹果通用链接？

Question

My app can successfully handle apple universal links, if the app is already open (backgrounded). But if the app is not open already, then when I tap such a link in, say, mail, the app opens, but I never get the callback for application:continueUserActivity... (which I do if the app was already open/backgrounded)...

To wit:

If the app is backgrounded, and I click on an apple universal link in, say, the mail app, then this method (which is what apple's documentation says to implement to handle universal links):

optional func application(_ application: UIApplication,
     continueUserActivity userActivity: NSUserActivity,
       restorationHandler restorationHandler: ([AnyObject]?) -> Void) -> Bool

Gets called. If the app is not running (I force close it), then when I click on the link, that method does NOT get called, but the app DOES open.

Is this supposed to work this way?

---

Based MCMatan's clue, you have to do something like this in didFinishLaunchingWithOptions, and then continueUserActivity will get called:

if let userActivityDict = launchOptions?[UIApplicationLaunchOptionsUserActivityDictionaryKey] as? NSDictionary,
      activityType = userActivityDict[UIApplicationLaunchOptionsUserActivityTypeKey] as? String where activityType == NSUserActivityTypeBrowsingWeb {

    return true
}

Answer 1

You are correct. If the app is not in background "continueUserActivity" will not be called.

Instead, application:didFinishLaunchingWithOptions will call with the information:

let activityDic = launchOptions?[UIApplicationLaunchOptionsUserActivityDictionaryKey]
if let isActivityDic = activityDic {
    // Continue activity here
}