Cannot install Support repository and sync project in Android Studio

Question

I am trying to use the support libraries of version 25.2.0 so I will be able to use the CameraKit library.

I have got the newest build tools downloaded:

Answer 1

Make sure to put it under allprojects! My mistake was to put it under buildscript.

DON'T DO THIS:

buildscript {
    repositories {
        jcenter()
         maven {
             url 'https://maven.google.com' //don't put it here
         }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
    }
}

BUT INSTEAD DO THIS:

allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com' //put it here
        }
    }
}