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

Even it didn't worked for me when I updated my iOS 9 but after try this solution it worked for me.

1) Add data in info.plist as shown image

Answer 2

This happened to me also when upgrading to FBSDK 4.18.0

Downgrading to 4.17.0 solved it for me.

Answer 3

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

Answer 4

For iOS 11 / Swift 4 you should add the following code to your AppDelegate:didFinishLaunchingWithOptions

SDKApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)

Final code is:

import FacebookCore

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

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

        // FACEBOOK CONFIGURATION
        SDKApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)


        return true
    }