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Android buildscript repositories: jcenter vs mavencentral

java
gradle
maven-central
repository-management
Nikita BarsukovbyNikita Barsukov·Jan 22, 2025
TLDR

Use mavenCentral() instead of the defunct jcenter() for Android builds. jcenter has been discontinued, so updating your buildscript is essential to prevent potential disruptions:

repositories { mavenCentral() // Strong, stable and never out of style, like your grandpa's sturdy old boots }

Choosing mavenCentral ensures access to a comprehensive range of libraries and ongoing support.

Migrating away from the now sunsetting JCenter and turning to Maven Central will preserve the stability of your build environment. Even though JCenter has been the go-to spot for a while due to its convenience and extra goodies, a move is now imminent. Your project needs a repository, and Maven Central is ready to pull up a chair to the dinner table!

Understanding the historical shift

The sunset of JCenter: the why's

Ever wondered why we are shifting sands from JCenter to Maven Central? Once upon a time, we cherished JCenter because of its extensive libraries and ease of use. But sunsets are inevitable! Now, Maven Central comes to the rescue, ready to supply the secure and stable libraries you need for your projects.

Maven Central: strong and secure

Maven Central, a veteran in the field, ensures your library needs are satisfied, secure, and stable. Fear not the snags in the uploading process - they're just layers of quality assurance measures for a secure artifact!

Team developments: the Superheroes

Fretting over managing multiple repositories? Fear not. Sonatype Nexus and JFrog Artifactory are your superheroes, streamlining repository management and making your lives simpler.

Timing the transition

Mindful migration

Seeing JCenter still up and running, you might ask, why move? But remember, fortune favors the foreseen. Plan early, assess your dependency, and go for a gradual migration with Maven Central.

Gradle: the proxy change

Gradle has served us with JCenter as default. However, do make an effort to explicitly specify Maven Central in your Gradle builds to future-proof them.

CDN and security

Both Maven Central and JCenter use CDN networks for efficient content serving. The winning factor? Maven Central's commitment to security through required HTTPS and fast online JSON search capability for artifacts, makes it our champion for modern Android development.

Optimization: beyond repositories

Improving build speed

Speed matters, especially in builds. The distribution and access speed may vary based on your geographical location. Choose the faster source, that's the fast-food of coding!

Identification: a potential pitfall

Did you know Bintray and Maven Central take different routes for package identification? Before syncing, always double-check the coordinates - it's like confirming your Uber's car number!

CI systems: the unsung hero

If you're employing CI systems, say, Jenkins or Travis CI, ensure to update the configurations in line with Maven Central. It keeps your CI pipelines streamlined, almost like they've been to the gym!