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iOS

Posted by Eugene Teh
Eugene Teh
3,850 Points

Swift: Is it possible to avoid Facebook SDK 4.x “You have already authorized this app” dialog on login?

I have successfully implemented Facebook SDK in my iOS app, and can login / logout and display views according to FB login success.

However, there is an annoying dialog that keeps showing up past the initial login - "You have already authorized this app". Is there a way to avoid this?

3 Answers

Stepan Ulyanin
Stepan Ulyanin
11,318 Points
Stepan Ulyanin
Stepan Ulyanin
11,318 Points

Hi, it looks like your app ether logs the user out somehow, once your user logs in the app an access token is stored in the device, but if you log the user out then the token is lost.

Eugene Teh
Eugene Teh
3,850 Points
Eugene Teh
Eugene Teh
3,850 Points

I don't think that's right. I get that message even though I still have the access token. I use this code to check for the token in my applicationDidBecomeActive method in my AppDelegate.swift, so I'm pretty sure I still retain the access token when I get this message.

if let fbAccessToken = FBSDKAccessToken.currentAccessToken() { return true } else { return false }

Oleksii Gamalii
Oleksii Gamalii
7,157 Points
Oleksii Gamalii
Oleksii Gamalii
7,157 Points

As per my experience, accessToken is not saved after the app was terminated. So the option here is to save the token manualy. And when your app starts, try to load it from CoreData, for example. If it's not there — start login dialog, else — make current access token from your saved data:

    let tokenString = fbLoginData!.tokenString!
    let appID = fbLoginData!.appID!
    let userID = fbLoginData!.userID!
    let expirationDate = fbLoginData!.expirationDate!
    let refreshDate = fbLoginData!.refreshDate!


    let accessToken = FBSDKAccessToken.init(tokenString: tokenString, permissions: permissions, declinedPermissions: declinedPermissions, appID: appID, userID: userID, expirationDate: expirationDate, refreshDate: refreshDate)