Android Studio Gradle: Please remove usages of `jcenter()` Maven repository from your build scripts / JCenter is at end of life

Question

In Android Studio 4.2 there is a warning:

buildscript {
    ext.kotlin_version = '1.5.0'

    repositories {
        google()
        //jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        //jcenter()
        mavenCentral()
    }
}

If I remove jcenter() then it can't find some dependencies of my app project:

   > Could not find org.koin:koin-core:2.0.1.
     Required by:
         project :app
   > Could not find org.koin:koin-androidx-scope:2.0.1.
     Required by:
         project :app
   > Could not find org.koin:koin-androidx-viewmodel:2.0.1.
     Required by:
         project :app
   > Could not find com.google.ads.mediation:chartboost:8.1.0.0.
     Required by:
         project :app

In replace of jcenter() I added mavenCentral()

Solution 1

For koin, change the group id from org.koin to io.insert-koin - the latter is published on maven central.

For chartboost, you can use the following repo:

maven {
    url "https://dl.bintray.com/google/mobile-ads-adapters-android/"
}

Also note that there are newer versions such as koin 2.2.2 / 3.0.1 and chartboost 8.2.0.0. Older versions are likely not republished in non-jcenter repos.

mvnrepository is a good service for locating packages.

Solution 2

Move mavenCentral() above jcenter().

do a clean/build on your project.

comment out jcenter()

By moving mavenCentral() above jcenter(), mavenCentral() now becomes the primary repository for all non Google artifacts. By doing a clean and build, all artifacts are now moved to mavenCentral().

I had to look this up and tried it. I went from all heck breaking loose after I removed jcenter() to being able to build my final project for school again.

Solution 3

just commenting out jcenter() will help, mavencentral() is already above jcenter.

Solution 4

Locate all build.gradle files in your project folder tree, open them and replace jcenter() by mavenCentral(). It works for me most of the time.

Solution 5

It is interesting that the AndroidStudio project template still adds the ref to jcenter() to gradle, but then as soon as the project attempts to build it requests that you remove it.

I just delete it from the gradle file and then it works.

View more solutions

Comments

[J Fabian Meier]

I guess you need to check the homepages of the different missing JARs to see where you might get them in the future.

[just_user]

The question wasn't how to remove it.

[raddevus]

FYI - As of 2021-06-22, mine had mavenCentral() above jcenter() but now it warns you that you have to remove it. I removed jcenter() and rebuilt and all is well now.

[programandoconro]

After commenting jcenter clean the project.