add

google()

below

jcenter()

in your repositories

Not working Gradle sync failed: Could not find method google() for arguments [] on repository container. Consult IDE log for more details (Help | Show Log)

Are you using AS 3?

@Kevin Janvier Chinabalire for me it always helps out to create a brand new project from Android Studio 3.0 and see how the build.gradle is structured. Being able to see a project that compiles and comparing it with your project can be helpful. Just do new project, blank activity and take a look at the root build.gradle. Hope it helps!

@Kevin Janvier Chinabalire You need a new version of Gradle (current version 4.2). Or just replace

google()

with

maven { url "<https://maven.google.com>" }