Firebase auth issue in Android 12

[reporterma]

Hi I am using email login but it crashes on Android 12. I am not using PendingIntent in my code. Is there a way to fix it, please?

Fatal Exception: java.lang.IllegalArgumentException: com.example.monuments: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
at android.app.PendingIntent.checkFlags(PendingIntent.java:382)
at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:465)
at android.app.PendingIntent.getActivity(PendingIntent.java:451)
at android.app.PendingIntent.getActivity(PendingIntent.java:415)
at com.google.android.gms.internal.auth-api.zzr.zzc(com.google.android.gms:play-services-auth@@19.0.0:19)
at com.google.android.gms.auth.api.credentials.CredentialsClient.getHintPickerIntent(com.google.android.gms:play-services-auth@@19.0.0:10)
at com.firebase.ui.auth.ui.email.CheckEmailHandler.fetchCredential(CheckEmailHandler.java:29)
at com.firebase.ui.auth.ui.email.CheckEmailFragment.onActivityCreated(CheckEmailFragment.java:174)
at androidx.fragment.app.Fragment.performActivityCreated(Fragment.java:2996)
at androidx.fragment.app.FragmentStateManager.activityCreated(FragmentStateManager.java:580)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:285)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1455)
at android.app.Activity.performStart(Activity.java:8307)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:4056)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2434)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8633)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:567)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1133)

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[reporterma]

I have tried firebase-bom:29.3.0, not working
and versioning individually:
implementation 'com.google.firebase:firebase-analytics:20.1.2'
implementation 'com.google.firebase:firebase-auth:21.0.3'
implementation 'com.google.firebase:firebase-database:20.0.4'
implementation 'com.google.firebase:firebase-crashlytics:18.2.9'
not working...

[vasuthakker]

Any update or workaround for this issue?

[argzdev]

Hi @reporterma & @vasuthakker, thanks for reporting. It looks like this error comes from the pre-built FirebaseUI.
Did you use com.firebaseui:firebase-ui-auth? If so, what version did you use?

I'm unable to reproduce the issue, however I was able to pin point the issue. Upon checking the latest code repo of com.firebaseui:firebase-ui-auth, the problem lies within the zzr class of com.google.android.gms.internal.auth-api.zzr which is from a seperate dependency com.google.android.gms:play-services-auth:19.0.0@aar

public static PendingIntent zzc(Context var0, @Nullable AuthCredentialsOptions var1, HintRequest var2, @Nullable String var3) {
    /** other code **/
    return PendingIntent.getActivity(var0, 2000, var8, 134217728);
 }

The flag FLAG_UPDATE_CURRENT or 134217728 is being set in the PendingIntent upon return. It should be 67108864 | 134217728 or 201326592 as the bitwise OR of the 2 flags FLAG_IMMUTABLE and FLAG_UPDATE_CURRENT. E.g.:

public static PendingIntent zzc(Context var0, @Nullable AuthCredentialsOptions var1, HintRequest var2, @Nullable String var3) {
    /** other code **/
    return PendingIntent.getActivity(var0, 2000, var8, 67108864 | 134217728);
}

Unfortunately, since this is an external private dependency, I can't create a pull request for this. However, I'll notify an engineer about the findings and see what we can do here.

[reporterma]

Thank you argzdev. I am using com.firebaseui:firebase-ui-auth: 8.0.0
I may raise an issue in firebaseui as well.

[reporterma]

firebase/FirebaseUI-Android#1999
basically the solution at the moment is to drop firebaseUI.

[argzdev]

@reporterma, you could try the solution provided in the comments. I think that'll help as a workaround. Anyway, since this has already been reported in FirebaseUI, and it looks like it's been there for a while. I'll be closing this issue for now to avoid duplicates. Thanks again!