iOS 9 Facebook Access Token is nil on future app launches

Question

After the recent iOS 9 update, along with updates to the Facebook SDK (4.6.0), I\'m finding that my login session is no longer persisting between app launches.

My flow

Answer 1

Adding this line on didFinishLaunchingWithOptions worked for me:

FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)

Final method looks something like this:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)

    if let accessToken = FBSDKAccessToken.currentAccessToken(){
        print(accessToken)
    }else{
        print("Not logged In.")
    }

    return true
}

Reference