build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

ext {
    //support version
    supportVersion = '25.3.1'
    //guava Version
    guavaVersion = '20.0'
    //retrofit
    retrofitVersion = '2.2.0'
    //gsonVersion
    gsonVersion = "2.6.1"
    //interceptor version
    inteceptorVersion = "3.6.0"
    //code version
    codecVersion = '1.10'
}