How to delay push notifications permission popup Swift

Question

I'm working on an app with push notifications, I want to delay the appearance of the push notifications permission pop up until after the user enters my app for the third time. So he should be interested in my app, then I want to ask him for his permission. I there a way to do that? I searched a lot for a way, like here: Reset push notification settings for app but I didn't get any useful answers. Please Help. Thanks

Answer 1

Maintain one userDefault which increments in "- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {}" method

if the userDefault is greater than 3,then seek for permission of Notification

if NSUserDefaults.standardUserDefaults().objectForKey("launchCount")?.integerValue >= 3{
        if UIApplication.sharedApplication().respondsToSelector("isRegisteredForRemoteNotifications") {
            UIApplication.sharedApplication().registerUserNotificationSettings(
                UIUserNotificationSettings(
                    forTypes: [.Alert, .Badge, .Sound],
                    categories: nil))
            UIApplication.sharedApplication().registerForRemoteNotifications()
        }
    }