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Failed to resolve: com.google.firebase:firebase-core:16.0.1

I'm trying to add firebase cloud storage to my app. Below is the app build.gradle. But it says:
Failed to resolve: com.google.firebase:firebase-core:16.0.1.
Why? There is no firebase-core in the dependencies at all.

apply plugin: 'com.android.application'

android {
compileSdkVersion 27
defaultConfig {
applicationId "com.louise.udacity.mydict"
minSdkVersion 15
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
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.google.cloud:google-cloud-storage:1.31.0'
implementation 'com.firebase:firebase-jobdispatcher:0.8.5'
}

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


5 Answers
5

From the docs:

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

Add:

implementation 'com.google.firebase:firebase-core:16.0.0'


and in top level gradle file use the latest version of google play services:

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


https://bintray.com/android/android-tools/com.google.gms.google-services

Just to add, also you need to add the google() repo in the top level gradle file, as specified in the firebase docs:

google()

buildscript {
// ...
dependencies {
// ...
classpath 'com.google.gms:google-services:4.0.1' // google-services plugin
}
}

allprojects {
// ...
repositories {
// ...
google() // Google's Maven repository
}
}


https://firebase.google.com/docs/android/setup

I get the same issue and i solved it by replacing :

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


to

implementation 'com.google.firebase:firebase-core:15.0.2'


and everything solved and worked well.

Since May 23, 2018 update, when you're using a firebase dependency, you must include the firebase-core dependency, too.

firebase-core

If adding it, you still having the error, trying to update the gradle plugin in your gradle-wrapper.properties to 4.5 version:

gradle-wrapper.properties

distributionUrl=https://services.gradle.org/distributions/gradle-4.5-all.zip


and resync the project.

I was able to solve the issue by following these steps-

1.) This error occurs when you didn't connect your project to firebase.
Do that from Tools->Firebase if you are using Android studio version 2.2 or above.

2.) Make sure you have replaced the compile with implementation in dependencies in app/build.gradle

compile

implementation

dependencies in app/build.gradle

3.) Include your firebase dependency from the firebase docs. Everything should work fine now

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

repositories {
maven { url "https://maven.google.com" }
flatDir {
dirs 'libs'
}
}


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