build.gradle

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

buildscript {

    ext.support_version = '27.1.1'
    ext.dagger_version = '2.13'
    ext.retrofit_version = '2.4.0'
    ext.butterknife_version = '8.8.1'

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.4'
        

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

allprojects {
    repositories {
        google()
        jcenter()
    }
}

subprojects {
    project.configurations.all {
        resolutionStrategy.eachDependency { details ->
            if (details.requested.group == 'com.android.support'
                    && !details.requested.name.contains('multidex') ) {
                details.useVersion "$support_version"
            }
        }
    }
}

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