Crash NullPointerException from email of CredentialSaveActivity when upgrade to ver 9.0.0

[NamTranDev]

Fatal Exception: java.lang.NullPointerException
Parameter specified as non-null is null: method com.firebase.ui.auth.ui.credentials.CredentialSaveActivity$Companion.createIntent, parameter email

com.firebase.ui.auth.ui.credentials.CredentialSaveActivity$Companion.createIntent (Unknown Source:12)

My code :

signInWithOnlyOption(
                        when (authenType) {
                            AuthenType.GOOGLE -> AuthUI.IdpConfig.GoogleBuilder().build()
                            AuthenType.FACE_BOOK -> (activity as BaseActivity).getFaceBookProvider()
                            else -> AuthUI.IdpConfig.EmailBuilder()
                                .setDefaultEmail(authenManager.getEmail()).build()
                        }
                    )

This crash error never happened when using the old version

[splendapps]

We also have this bug in version 9.0.0.
There are a lot of exceptions; approximately 6% of users are experiencing this error!

Fatal Exception: java.lang.NullPointerException: Parameter specified as non-null is null: method T1.c.l, parameter email
at com.firebase.ui.auth.ui.credentials.CredentialSaveActivity$Companion.createIntent(CredentialSaveActivity.java:22)
at com.firebase.ui.auth.ui.credentials.CredentialSaveActivity.createIntent(CredentialSaveActivity.java:22)
at com.firebase.ui.auth.ui.HelperActivityBase.startSaveCredentials(HelperActivityBase.java:93)
at com.firebase.ui.auth.ui.idp.AuthMethodPickerActivity$onCreate$1.onSuccess(AuthMethodPickerActivity.java:176)
at com.firebase.ui.auth.ui.idp.AuthMethodPickerActivity$onCreate$1.onSuccess(AuthMethodPickerActivity.java:174)
at com.firebase.ui.auth.viewmodel.ResourceObserver.onChanged(ResourceObserver.java:69)
at com.firebase.ui.auth.viewmodel.ResourceObserver.onChanged(ResourceObserver.java:19)
at androidx.lifecycle.LiveData.considerNotify(LiveData.java:133)
at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:151)
at androidx.lifecycle.LiveData.setValue(LiveData.java:309)
at androidx.lifecycle.MutableLiveData.setValue(MutableLiveData.java:50)
at com.firebase.ui.auth.viewmodel.OperableViewModel.setResult(OperableViewModel.java:25)
at com.firebase.ui.auth.viewmodel.SignInViewModelBase.setResult(SignInViewModelBase.java:23)
at com.firebase.ui.auth.viewmodel.SignInViewModelBase.handleSuccess(SignInViewModelBase.java:27)
at com.firebase.ui.auth.viewmodel.idp.SocialProviderResponseHandler.lambda$startSignIn$0(SocialProviderResponseHandler.java:74)
at com.google.android.gms.tasks.zzm.run(com.google.android.gms:play-services-tasks@@18.1.0:1)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:8194)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:703)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911)

[splendapps]

It seems that if a user tries to register via Facebook using a phone number (without an email address) it generates an error.

[kantinakum]

This error is only for new user tries to sign in via Facebook (without email ID). this also occur even after providing specific facebook permission(i.e. public_profile) as we know email is not mandatory but FirebaseUI expect email ID always.

java.lang.NullPointerException
Parameter specified as non-null is null: method com.firebase.ui.auth.ui.credentials.CredentialSaveActivity$Companion.createIntent, parameter email

[sandeep5193]

This has started after moving from SmartLock based implementation to CredentialManager one, see this commit.

[sandeep5193]

I changed CredentialSaveActivity.createIntent() method parameters, at this place, making email as nullable again.

It is working now, but I do not know it's implications. @thatfiredev can you please throw some light on this?