Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.firebase:firebase-messaging:17.1.0

Question

Currently, I am working on an android chat application. I want to add FCM in my app. But I am always getting this gradle error. From what I have read, the firebase auth, database and messaging dependency version should match. I have tried every version, still, the same error occurs.

Snapshot of problem

check this https://stackoverflow.com/questions/45617237/failed-to-resolve-com-google-firebasefirebase-messaging11-0-4-in-android-stu — Sachin Rajput, Jul 27 '18 at 05:25
check this link https://stackoverflow.com/a/47833606/2919483 hope it may help you. — Rajshree Tiwari, Jul 27 '18 at 05:30

score 1 · Accepted Answer · edited Oct 21 '19 at 11:07

To solve this, please change the following line of code:

com.google.firebase:firebase-auth:16.0.1

to

com.google.firebase:firebase-auth:16.0.2

and add:

com.google.firebase:firebase-core:16.0.1

Which is mandatory now. Don't also forget to add:

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

At the end of your file and the following line of code:

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

Into your build.gradle file (Project).

PS. If you are using Firebase-UI auth, add also this line of code:

com.firebaseui:firebase-ui-auth:4.0.1

score 0 · Answer 2 · edited Jun 20 '20 at 09:12

0

You must have forgotten to add google() // Google's Maven repository in build.gradle.

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

Here is the comment from firebase docs:

// Getting a "Could not find" error? Make sure you have

// added the Google maven respository to your root build.gradle

Here is the reference: link

edited Jun 20 '20 at 09:12

Community

1
1

answered Jul 27 '18 at 05:30

mark922

1,136
2
11
20

it is added allprojects { repositories { google() jcenter() } } – Hasan Jul 27 '18 at 05:32
Alright. Can you please add your gradle files to question – mark922 Jul 27 '18 at 05:33

score 0 · Answer 3 · answered Nov 20 '18 at 19:27

0

Add Maven to your project.gradle in repositories LIKE THIS

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

answered Nov 20 '18 at 19:27

Raymond M Musabandesu

1

msolak · Answer 4 · 2020-01-20T17:30:04.307

Late post, but will help to someone... Change your project level build.gradle file

 // Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.google.gms:google-services:4.2.0'

    }
}

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

Make changes in app-level build.gradle file

dependencies {
    implementation 'com.google.android.gms:play-services:+'
    implementation 'com.google.firebase:firebase-messaging:17.3.4'
    implementation 'com.android.volley:volley:1.1.1'
    implementation 'com.squareup.picasso:picasso:2.71828'
    //implementation 'com.google.firebase:firebase-ads:15.0.1'
    implementation 'com.google.firebase:firebase-ads:17.1.2'
    implementation 'com.google.android.gms:play-services-ads:15.0.1'
    implementation 'com.google.firebase:firebase-core:16.0.8'
    implementation 'com.google.firebase:firebase-database:16.1.0'
}

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.firebase:firebase-messaging:17.1.0

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