[FIXED] Gradle build errors in Firebase UI dependency

Issue

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
    implementation 'com.android.support:exifinterface:28.0.0-alpha3'
    implementation 'com.android.support:support-media-compat:28.0.0-alpha3'
    implementation 'com.android.support:support-v4:28.0.0-alpha3'
    implementation 'com.android.support:design:28.0.0-alpha3'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.android.support:support-vector-drawable:28.0.0-alpha3'
    implementation 'com.google.firebase:firebase-messaging:11.8.0'
    implementation 'com.google.firebase:firebase-storage:11.8.0'
    implementation 'de.hdodenhof:circleimageview:2.2.0'
    implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.+'
    implementation 'com.squareup.picasso:picasso:2.71828'
    implementation 'com.google.firebase:firebase-auth:11.8.0'
    implementation 'com.google.firebase:firebase-database:11.8.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.firebaseui:firebase-ui-database:4.1.0'    
}

These are my dependencies but it is giving me gradle errors, its because of the FirebaseUI dependency as when I delete that the app builds fine.

Can anyone help me how to resolve this? I know its most probably some version issue.

Solution

According to the docs:

As of version 4.1.0, FirebaseUI has the following dependency versions:

Library         Version
firebase-auth       16.0.1
play-services-auth  15.0.1
firebase-database   16.0.1
firebase-firestore  17.0.1
firebase-storage    16.0.1

---

Update the following to dependencies:

implementation 'com.google.firebase:firebase-auth:11.8.0'
implementation 'com.google.firebase:firebase-database:11.8.0'
implementation 'com.google.firebase:firebase-messaging:11.8.0'
implementation 'com.google.firebase:firebase-storage:11.8.0'

to this:

implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-messaging:17.1.0'
implementation 'com.google.firebase:firebase-storage:16.0.1'

Also add:

    implementation 'com.google.firebase:firebase-core:16.0.1'

Your app gradle file now has to explicitly list com.google.firebase:firebase-core as a dependency for Firebase services to work as expected.

In the top level gradle file use the following google-service plugin:

classpath 'com.google.gms:google-services:4.0.2'

Answered By - Peter Haddad
Answer Checked By - Marilyn (JavaFixing Volunteer)