build.gradle

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

buildscript {

    ext.support_lib_version = '25.3.1'

    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
        classpath "io.realm:realm-gradle-plugin:3.5.0"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

//Define versions in a single place
ext{
    //Sdk and tools
    minSdkVersion = 16
    targetSdkVersion = 25
    compileSdkVersion = 25
    buildToolsVersion = '26.0.0'

    //App dependencies
    supportLibraryVersion = '25.3.1'
    picassoVersion = '2.5.2'
    butterKnifeVersion = '8.6.0'
    circleImageViewVersion = '2.1.0'
    mpAndroidChartVersion = 'v3.0.1'
    commonMathVersion = '3.6.1'
    commonLangVersion = '3.5'
    materialDialogsVersion = '0.9.4.5'
    navTabStripVersion = '1.0.4'
    constraintLayoutVersion = '1.0.2'
    atvVersion = "1.2.+"

    //Test dependencies
    testRunnerRulesVersion = '0.5'
    junitVersion = '4.12'
    espressoVersion = '2.2.2'
    mockitoVersion = '2.7.1'
}