[Bug] Unable to find Method com/google/firebase/remoteconfig/ConfigUpdateListenerRegistration.remove

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2021.3.24f1
• Firebase Unity SDK version: 11.1.0
• Source you installed the SDK: .tgz
• Problematic Firebase Component: remote config
• Other Firebase Components in use: messaging, analytics
• Additional SDKs you are using: Google Play AppUpdate, AppBundle, AssetDelivery, InAppReview
• Platform you are using the Unity editor on: Windows/Mac
• Platform you are targeting: Android
• Scripting Runtime: IL2CPP
• Pre-built SDK from the website or open-source from this repo: prebuilt

[REQUIRED] Please describe the issue here:

Since the v11.0 upgrade when I launch the app and try to access FirebaseRemoteConfig.DefaultInstance, I have the following warning on the logcat console: java.lang.NoSuchMethodError: no non-static method “Lcom/google/firebase/remoteconfig/ConfigUpdateListenerRegistration;.remove()V”

followed by the error: Unable to find Method com/google/firebase/remoteconfig/ConfigUpdateListenerRegistration.remove (signature ‘()V’, instance). Please verify the AAR which contains the com/google/firebase/remoteconfig/ConfigUpdateListenerRegistration class is included in your app.

What’s the issue repro rate? 100%

using Firebase version 10.7.0 everything works as expected.

Relevant Code:

FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task => 
{
    var dependencyStatus = task.Result;
    if( dependencyStatus == DependencyStatus.Available ) 
    {
        // this log appear in the console
        Debug.Log( $"RemoteConfig --- FIREBASE CheckAndFixDependenciesAsync complete. {task.Result}" );

        // Create and hold a reference to your FirebaseApp,
        // where app is a Firebase.FirebaseApp property of your application class.
        FirebaseAppInstance = FirebaseApp.DefaultInstance;

        
        // Apply RemoteConfig default values
        FirebaseRemoteConfig.DefaultInstance.SetDefaultsAsync( DefaultValues ).ContinueWithOnMainThread( _ =>
        {
           // This log never appear in the console
           Debug.Log( "FIREBASE SetDefaultsAsync complete." );
            
            // Get config from Firebase
            FirebaseRemoteConfig.DefaultInstance.FetchAndActivateAsync().ContinueWithOnMainThread( _ =>
            {
                var remoteConfig = FirebaseRemoteConfig.DefaultInstance;
                var info         = remoteConfig.Info;
                
                // TODO get values from RemoteConfig
            } );
        } );
    } 
    else 
    {
        Debug.LogError( $"Could not resolve all Firebase dependencies: {dependencyStatus}" );
        // Firebase Unity SDK is not safe to use here.
    }
});

see attached my mainTemplate.gradle file mainTemplate.gradle.txt

[lagoonbbbo]

Ok, it worked ! Thank you very much.

[a-maurice]

Hi @lagoonbbbo

Thanks for the bug report. The problem is that the symbols are being stripped by minification. We will try to get this fixed in the next release, but in the meantime, a pretty simple workaround is available.

In your Assets/Plugins/Android/proguard-user.txt file, you can add:

-keep,includedescriptorclasses public class com.google.firebase.remoteconfig.ConfigUpdateListenerRegistration { *; }