Could not resolve dependency for 'com.google.firebase:firebase-auth:16.0.3'

Question

I am trying to add firebase authentication to my project. I am getting following errors while syncing build.gradle:

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.firebase:firebase-auth:16.0.3.
Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.firebase:firebase-auth:16.0.3.
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.firebase:firebase-auth:16.0.3.
Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.google.firebase:firebase-auth:16.0.3.
Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.firebase:firebase-auth:16.0.3.

My app level gradle file is below:

  apply plugin: 'com.android.application'

    android {
        compileSdkVersion 26
        defaultConfig {
            applicationId "com.example.muzammil.maptestingproject"
            minSdkVersion 15
            targetSdkVersion 24
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
        productFlavors {
        }
    }

    dependencies {
        implementation fileTree(include: ['*.jar'], dir: 'libs')
        implementation 'com.android.support:appcompat-v7:26.1.0'
        implementation 'com.google.android.gms:play-services-maps:15.0.1'
        implementation 'com.google.android.gms:play-services-vision:15.0.2'
        implementation 'com.google.android.gms:play-services-location:15.0.1'
        implementation 'com.google.android.gms:play-services-maps:15.0.1'


        implementation 'com.google.firebase:firebase-core:16.0.3'
        implementation 'com.google.firebase:firebase-database:16.0.1'
        implementation 'com.android.support:design:26.1.0'
        implementation 'com.android.support.constraint:constraint-layout:1.1.2'
        implementation 'com.google.firebase:firebase-auth:16.0.3'
        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'
    }
    apply plugin: 'com.google.gms.google-services'

The project level gradle file is :

 buildscript {

        repositories {
            google()
            jcenter()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:3.1.3'
           classpath 'com.google.gms:google-services:4.0.1'
        }
    }

    allprojects {
        repositories {
            google()
            jcenter()
 maven { url 'https://jitpack.io' }
        }
    }

    task clean(type: Delete) {
        delete rootProject.buildDir
    }

add `maven { url 'https://jitpack.io' }` in project level gradle — Sniffer, Sep 12 '18 at 07:34
You are adding FireBase in new or existing project? And are you adding your google-services.json file in your App directoty? — Stanislav Batura, Sep 12 '18 at 07:55
yes of course sir, I've added google-services.json . This is an existing project — Muzzammil Hussain, Sep 12 '18 at 08:03

Nikunj · Accepted Answer · 2018-09-13T06:05:02.200

3

In project level gradle file try to update google-services plugin to latest version:

buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.3'
        classpath 'com.google.gms:google-services:4.1.0' // update version
    }
}

edited Sep 13 '18 at 06:05

answered Sep 12 '18 at 07:36

Nikunj

3,937
19
33

`jitpack.io` does not serve these dependencies; because this is the repository for `GitHub`. updating the Google Services plugin does appear way more likely. – Martin Zeitler Sep 12 '18 at 08:10

score 2 · Answer 2 · answered Sep 12 '18 at 08:02

it complains about lack of dependencies for the debugUnitTest, while you don't have any debug build-type specified in your module-level build.gradle. it should look about like this, for example:

buildTypes {
    debug {
        applicationIdSuffix '.debug'
        // signingConfig signingConfigs.debug
        minifyEnabled false
        debuggable true
        jniDebuggable true
        zipAlignEnabled true
        renderscriptDebuggable true
        pseudoLocalesEnabled false
        shrinkResources false
    }

also, consider adding androidTestImplementation "com.android.support.test:rules:1.0.2" as a dependency ...and maybe add testBuildType "debug" to the defaultConfig.

score 1 · Answer 3 · answered Sep 12 '18 at 08:06

Since the normal way doesn't work,and assuming you are using Android Studio you could try using the GUI way by:

Clean Project
Rebuild Project
Under the Tools, select Firebase
Authentication
Email and password authentication
Connect to Firebase
Add dependencies
Check your auth status as described

Could not resolve dependency for 'com.google.firebase:firebase-auth:16.0.3'

3 Answers3