Failed to resolve com.google.android.gms play-services-auth:11.4.0

I am trying to write code for Android FirebaseUI — Auth in my android project but from last two days, I am getting errors in my current code and don't know how to fix it. trying hard but nothing happened in the right way.

here is my build.gradle(project:FriendlyChat)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenLocal()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
        mavenLocal()
    }
}

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

here is my build.gradle(Module:app)

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

repositories {
    mavenLocal()
    flatDir {
        dirs 'libs'
    }
}

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.1"

    defaultConfig {
        applicationId "com.google.firebase.udacity.friendlychat"
        minSdkVersion 16
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE-FIREBASE.txt'
        exclude 'META-INF/NOTICE'
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])

    // Displaying images
    compile 'com.android.support:design:24.2.1'
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.github.bumptech.glide:glide:3.6.1'
    compile 'com.google.firebase:firebase-database:11.0.4'
    compile 'com.google.firebase:firebase-auth:11.0.4'
   compile 'com.google.android.gms:play-services-auth:11.4.0'

    testCompile 'junit:junit:4.12'
}

Solution 1:

Failed to resolve com.google.android.gms play-services-auth:11.4.0 .

Add maven { url "https://maven.google.com" } to your root level build.gradle file

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}

This maven repo is required starting from 11.2.0.

You can also use the google() shortcut but check the requirements before using it.

Also pay attention since you are using different version. Use the same version.

compile 'com.google.firebase:firebase-database:11.0.4'
compile 'com.google.firebase:firebase-auth:11.0.4'
compile 'com.google.android.gms:play-services-auth:11.4.0'

UPDATE

Firebase Android SDKs and Google Play Services libraries now have independent version numbers, allowing for more frequent, flexible updates. Update the google play service gradle plugin version to latest version (at least 3.3.1).

classpath 'com.google.gms:google-services:4.0.1'

and update the libraries to the latest version.

Solution 2:

Add google() repository to your "build.gradle" file. This gradle method is equivalent to maven { url "https://maven.google.com" }.

repositories {
    jcenter()
    google()
}

Solution 3:

This error means that google play services 11.4.0 is not installed in your android studio.
To fix this you need to change the version of the dependency to what is installed in your android studio.
For this go to : Project Structure -> Project Settings -> Modules -> Dependencies
Here click on the + sign. Find your desired dependency.You can check its version here.You can also add the dependency to your project from here.

It is always recommended that you update your google play services SDK tools from SDK manager and use the newest version.

Solution 4:

add this in your project level gradle file

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}