FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder – A Comprehensive Guide to Resolution

FirebaseUI is an excellent library for simplifying authentication and authorization in mobile applications. However, sometimes, you might encounter an error that can be frustrating and challenging to resolve. One such error is the “FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder” error. In this article, we’ll delve into the causes of this error and provide step-by-step instructions on how to resolve it.

What is the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error?

The FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error occurs when the FirebaseUI library is unable to resolve the CredentialsOptions$Builder class. This class is part of the Google Play Services library, and it’s used to build credentials options for authentication. When FirebaseUI can’t find or resolve this class, it throws an error, preventing your app from running correctly.

Causes of the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error

There are several reasons why you might encounter this error. Some of the most common causes include:

• Outdated or missing Google Play Services library

• Incorrect or missing FirebaseUI library configuration

• Conflicting library versions or dependencies

• Corrupted or incomplete project setup

Resolving the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error

Now that we’ve identified the causes of the error, let’s dive into the steps to resolve it. Follow these instructions carefully to ensure a successful resolution:

Step 1: Update the Google Play Services library

Make sure you have the latest version of the Google Play Services library. You can check the version by opening your project’s build.gradle file and looking for the following line:

dependencies {
  implementation 'com.google.android.gms:play-services-auth:19.0.1'
}

If you’re using an outdated version, update it to the latest version available:

dependencies {
  implementation 'com.google.android.gms:play-services-auth:20.0.0'
}

Step 2: Verify FirebaseUI library configuration

Ensure that you’ve correctly configured the FirebaseUI library in your project. Check your build.gradle file for the following lines:

dependencies {
  implementation 'com.firebaseui:firebase-ui-auth:8.0.0'
}

If you’re missing these lines, add them to your build.gradle file.

Step 3: Check for conflicting library versions or dependencies

Sometimes, conflicting library versions or dependencies can cause issues. Check your project’s build.gradle file for any conflicting versions or dependencies:

dependencies {
  implementation 'com.google.android.gms:play-services-auth:20.0.0'
  implementation 'com.google.android.gms:play-services-base:17.3.0'
}

In this example, the play-services-auth and play-services-base libraries have different versions. Ensure that all Google Play Services libraries have the same version:

dependencies {
  implementation 'com.google.android.gms:play-services-auth:20.0.0'
  implementation 'com.google.android.gms:play-services-base:20.0.0'
}

Step 4: Clean and rebuild your project

Sometimes, a simple clean and rebuild can resolve the issue. Open your terminal and run the following commands:

gradle clean
gradle build

This will delete the build files and recreate them, ensuring that your project is rebuilt correctly.

Step 5: Verify project setup

If you’ve followed the above steps and still encounter the error, there might be an issue with your project setup. Check the following:

• Ensure that you’ve enabled the Google Play Services API in your Google Cloud console.

• Verify that you’ve correctly configured your Firebase project and added the required dependencies.

• Check that your AndroidManifest.xml file contains the necessary permissions and declarations.

Additional Troubleshooting Steps

If you’ve followed the above steps and still encounter the error, try the following additional troubleshooting steps:

1. Invalidate Caches and Restart

Sometimes, Android Studio’s cache can cause issues. Try invalidating the caches and restarting Android Studio:

File -> Invalidate Caches and Restart

2. Check for AndroidX conflicts

If you’re using AndroidX, ensure that you’ve correctly migrated your project and removed any AndroidX conflicts.

3. Verify FirebaseUI version compatibility

Ensure that your FirebaseUI version is compatible with your Firebase and Google Play Services library versions.

4. Check for duplicate dependencies

Verify that you don’t have duplicate dependencies in your build.gradle file, which can cause conflicts and errors.

Conclusion

The FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error can be frustrating, but it’s relatively easy to resolve. By following the steps outlined in this article, you should be able to identify and fix the issue. Remember to update your Google Play Services library, verify FirebaseUI library configuration, check for conflicting library versions or dependencies, clean and rebuild your project, and verify project setup. If you still encounter issues, try the additional troubleshooting steps. With patience and persistence, you’ll be able to resolve the error and continue building your Firebase-powered app.

Error Resolution Checklist
Update Google Play Services library
Verify FirebaseUI library configuration
Check for conflicting library versions or dependencies
Clean and rebuild project
Verify project setup

By following this checklist, you’ll be able to quickly identify and resolve the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error and get back to building your app.

FAQs

Q: What is the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error?

A: The FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error occurs when the FirebaseUI library is unable to resolve the CredentialsOptions$Builder class.

Q: What causes the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error?

A: The error can be caused by outdated or missing Google Play Services library, incorrect or missing FirebaseUI library configuration, conflicting library versions or dependencies, or corrupted or incomplete project setup.

Q: How do I resolve the FirebaseUI Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder error?

A: Follow the steps outlined in this article, including updating the Google Play Services library, verifying FirebaseUI library configuration, checking for conflicting library versions or dependencies, cleaning and rebuilding your project, and verifying project setup.

Q: What if I still encounter issues after following the resolution steps?

A: Try the additional troubleshooting steps, including invalidating caches and restarting, checking for AndroidX conflicts, verifying FirebaseUI version compatibility, and checking for duplicate dependencies.

Frequently Asked Question

Get confused about the FirebaseUI error “Failed resolution of: Lcom/google/android/gms/auth/api/credentials/CredentialsOptions$Builder”? Don’t worry, we’ve got you covered! Check out these frequently asked questions to sort out the issue.