Facebook Login - Obtain null Authentication token

[DRPrincess]

Checklist before submitting a bug report

• [X] I've updated to the latest released version of the SDK
• [X] I've searched for existing Github issues
• [X] I've looked for existing answers on Stack Overflow, the Facebook Developer Community Forum and the Facebook Developers Group
• [X] I've read the Code of Conduct
• [X] This issue is not security related and can safely be disclosed publicly on GitHub

Java version

java 11.0.12

Android version

Andriod 11

Android SDK version

8.2.0

Installation platform & version

implementation 'com.facebook.android:facebook-android-sdk:latest.release'

Package

Login

Goals

have an jwt format token

Expected results

have an jwt format token

Actual results

authenticationToken is empty

Steps to reproduce

No response

Code samples & details

val fBLoginManager = com.facebook.login.LoginManager.getInstance()
            fBLoginManager.registerCallback(mFaceBookCallbackManager, object : FacebookCallback<LoginResult> {

                override fun onCancel() {
                    Log.i(TAG, "facebook: onCancel")
               
                }

                override fun onError(error: FacebookException) {
                    Log.i(TAG, "facebook: error$error")
                   
                }


                override fun onSuccess(result: LoginResult) {
                    Log.i(TAG, "facebook: onSuccess")
                    //not empty
                    val accessToken = result.accessToken
                    //empty
                    val authenticationToken = result.authenticationToken
                   
               }
                    
            })
            fBLoginManager.logInWithReadPermissions(mFragment.fragment, mFaceBookCallbackManager, listOf("email", "public_profile"))

[sonjaBrzak]

I have the same issue. LoginResult returns the correct accessToken, but the authenticationToken (JWT token) is always null. Seems like a bug in the SDK. Is it possible that this will be fixed soon?

[DRPrincess]

@sonjaBrzak because no documentation provided for Android ,so I understand facebook android sdk is not support OIDC ,I solve my question by google firrbase ,it can help have a JWT token。

[sonjaBrzak]

@DRPrincess you are right, Firebase can help you get the JWT, although the issuer of that token will be google, not facebook, which could be a problem for the validation part of the token on the backend side. Did you solve that issue somehow?

[ViktorAkselrod]

I have the same issue.

[Micpol]

Do we have any progress or information on this issue? This exact code works perfectly on iOS with iOS facebook SDK, but for android I always get null on the AuthenticationToken.getCurrentAuthenticationToken - same for loginResult.authenticationToken.

This is blocking my team from adding facebook login to the app I'm working on.

[codefluencer]

@KylinChang @carolineli @mingcaozhang

Please fix retrieval of JWT token. This issue is ongoing from version 8.0.0 up until latest (at the time of writing 16.0.0)!

It can't be that the same functionality is working on iOS SDK, but not on Android and no documentation about this exists!

Why Android SDK is being ignored?

[avlaev]

same problem here. Please fix.

[DougSig]

Same issue here. Does Meta have any official workaround guidance? Is it expected that we implement the flow manually (https://developers.facebook.com/docs/facebook-login/guides/advanced/oidc-token)?