build.gradle

buildscript {
    repositories {
        jcenter()
        mavenLocal()
        google()
        maven { url 'https://maven.fabric.io/public' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.3'
        classpath 'com.google.gms:google-services:4.0.2'
    }
}

plugins {
    id 'com.github.ben-manes.versions' version '0.17.0'
}

allprojects {
    repositories {
        //mavenLocal() must be listed at the top to facilitate testing
        mavenLocal()
        jcenter()
        google()
        maven { url 'https://maven.fabric.io/public' }
    }

    // See: https://github.com/ben-manes/gradle-versions-plugin
    dependencyUpdates.resolutionStrategy = {
        componentSelection { rules ->
            rules.all { selection ->
                boolean numbersOnly = (selection.candidate.version ==~ /^[\d.]+$/)
                if (!numbersOnly) {
                    selection.reject("Rejecting: ${selection.candidate.version}")
                }
            }
        }
    }
}

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