How to Resolve Manifest Merger Conflicts Related to `application@appComponentFactory`?

Manifest Merger Conflict: Resolving Attribute Issue

Your error message stems from a conflict between attribute values in your AndroidManifest.xml file. Specifically, the attribute application@appComponentFactory appears in multiple elements. This issue arises when using both Android Support Libraries and AndroidX libraries in your application.

Root Cause:

Firebase has recently migrated to AndroidX, introducing dependencies that conflict with existing support libraries. This is due to the differing implementation of core components, including android:appComponentFactory.

Resolution:

To resolve this conflict, you have several options:

1. Migrate to AndroidX:

• Upgrade your compileSdkVersion to 28 or later.
• Update your Android Gradle Plugin to v3.2.1 or higher.
• Migrate your app to use AndroidX libraries. Follow the instructions outlined in the official migration guide.

2. Downgrade Firebase Dependencies:

• Temporarily revert to older versions of Firebase dependencies. However, this is not a sustainable solution as you will eventually need to migrate to AndroidX.

Example:

<code class="groovy">// Downgrading Firebase dependencies
implementation 'com.google.firebase:firebase-messaging:18.0.0'</code>

Additional Notes:

• Review the official release notes from Firebase to stay informed about migration timelines and best practices.
• Thoroughly check your AndroidManifest.xml file for any other potential attribute conflicts.
• Ensure that all dependencies in your build.gradle file are in sync and do not cause further conflicts.

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