build.gradle：如何解决“无法解决依赖关系”错误？

Question

I am getting this gradle error when i build my app:

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.squareup.okhttp3:okhttp:3.12.0.

here in my app.gradle dependencies code here is the image screenshot of the app.gradle file

buildgradle file

buildgradle file screenshot

here are the gradle files codes

Answer 1

you need to add repository mavenCentral() into allprojects 's repositories .

and please, don't post IDE screenshots, because it's painful to work with such input.