适配google services 3.1.0的Firebase UI版本冲突问题咨询

Hey there, let's tackle this Firebase UI compatibility issue you're facing with Google Services 3.1.0. I’ve dealt with similar version mismatch headaches before, so here’s a step-by-step breakdown of fixes that should get things working smoothly:

1. Lock Firebase UI to a Compatible Version #

Google Services 3.1.0 pairs best with Firebase UI 3.1.3 — it’s the last stable release that fully aligns with this Google Services version and avoids forcing newer support libraries that cause conflicts.

Update your app-level build.gradle dependencies to use this version across all Firebase UI modules you need:

implementation 'com.firebaseui:firebase-ui-auth:3.1.3'
// Match the version for other Firebase UI modules if you use them
implementation 'com.firebaseui:firebase-ui-database:3.1.3'
implementation 'com.firebaseui:firebase-ui-storage:3.1.3'

2. Force Consistent Support Library Versions #

Mixed support library versions pulled in by Firebase UI and other dependencies are the #1 cause of these errors. Add a resolution strategy to your app-level build.gradle to lock all support libraries to a version compatible with Google Services 3.1.0 — 27.1.1 is the sweet spot here:

configurations.all {
    resolutionStrategy {
        force 'com.android.support:appcompat-v7:27.1.1'
        force 'com.android.support:support-v4:27.1.1'
        force 'com.android.support:design:27.1.1'
        // Add any other support libraries your project uses here
    }
}

3. Verify Google Services Plugin Placement #

Make sure the Google Services plugin is applied after all your dependencies in the app-level build.gradle. This ensures the plugin correctly resolves Firebase dependencies without unexpected conflicts:

dependencies {
    // All your project dependencies go here first
}

apply plugin: 'com.google.gms.google-services'

4. Clean & Rebuild Your Project #

Old build artifacts often hang around and cause lingering issues even after you fix dependencies. Run these steps in Android Studio:

• Navigate to Build > Clean Project
• Follow up with Build > Rebuild Project
• Or use the terminal commands:

./gradlew clean
./gradlew assembleDebug

5. Align Firebase Core Version #

Firebase UI relies on Firebase Core, so make sure it’s compatible with both Google Services 3.1.0 and Firebase UI 3.1.3. Use Firebase Core 11.8.0 in your dependencies:

implementation 'com.google.firebase:firebase-core:11.8.0'

If you’re still running into problems, double-check your gradle-wrapper.properties to ensure you’re using Gradle 4.6 or newer — this version supports the dependency versions we’ve outlined here.

内容的提问来源于stack exchange，提问作者Eli Kozinets