iOS Parse Facebook Login error 308 FBSDKLoginBadChallengeString

Question

I\'m trying to implement Facebook login in my iOS app, using Parse.

let permissionsArray = [\"public_profile\", \"email\"]

PFFacebookUtils.logInInBackgroun         


        

Answer 1

Official response from Facebook:

We are already tracking this issue in another bug report, and it seems to be an error on Apple's side.

https://developers.facebook.com/bugs/919990934704584/

Answer 2

I found this problem when I upgraded to:

FBSDKCoreKit 4.4.0
FBSDKLoginKit 4.4.0
FBSDKShareKit 4.4.0.

It went away when I downgraded to:

FBSDKCoreKit 4.2.0
FBSDKLoginKit 4.1.0
FBSDKShareKit 4.1.0

I haven't had a chance to discover at what point the upgrades cause this - for example, could I have stuck with 4.3.0 for all three?

Answer 3

I fix it with: 1.Add Bolts.framework 2.in AppDelegate: #import

Answer 4

I also had error 308, however I was not using the Parse SDK.

These errors started appearing when I upgraded the Facebook iOS SDK from version 4.0.1 (FacebookSDKs-iOS-20150402) to one of the newer versions (4.2.0 - FacebookSDKs-iOS-20150528 or 4.3.0 - FacebookSDKs-iOS-20150625).

Downgrading the Facebook iOS SDK to version 4.0.1 solved this problem for me.

As a side note: the new versions of the SDK seem to correlate well with the appearance of 308 error posts on SO at the beginning of June.

Answer 5

You don't have to downgrade for this.

Perform the following things and it should work: - Clean your derived data (Xcode -> Preferences -> Locations -> Click on the small arrow next to Derived data). Make sure you read about derived data before performing this. If you have a complicated project and have made some silly mistakes (ex: deleted some file) you may have to figure out the issue before re running your app. But it won't be that difficult. - Delete your app form your device/simulator - Remove your Facebook app approval from Facebook (Setting -> App - > Click on the "x" to delete your app)

Rerun the app and everything should work.

Good Luck!

Answer 6

if log out and login again without leaving this app,this error also come,

let deletepermission = FBSDKGraphRequest(graphPath: "me/permissions/", parameters: nil, HTTPMethod: "DELETE")
            deletepermission.startWithCompletionHandler({(connection,result,error)-> Void in
                println("the delete permission is \(result)")
                dispatch_async(dispatch_get_main_queue(), { () -> Void in
                    FBSDKAccessToken.setCurrentAccessToken(nil)
                    FBSDKProfile.setCurrentProfile(nil)
                    fbLoginManager.logOut()
                    AppDelegate.sharedAppDelegte().logout()
                })
            })