build.gradle

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

buildscript {

    repositories {
        maven { url 'https://maven.google.com' }
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

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

allprojects {
    repositories {
        jcenter()
        google()
        maven { url 'https://maven.google.com' }
        maven { url "https://www.jitpack.io" }
    }
}

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

ext {
    // Sdk and tools
    minSdkVersion = 15
    targetSdkVersion = 26
    compileSdkVersion = 26
    buildToolsVersion = '26.0.2'

    // App dependencies
    supportLibraryVersion = '26.1.0'
    daggerVersion = '2.11'
    retrofitVersion = '2.2.0'
    okHttp3Version = '3.6.0'
    butterKnifeVersion = '8.6.0'
    dbflowVersion = '3.1.1'
}