build.gradle

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

buildscript {
    repositories {
    	mavenLocal()
        jcenter()
        google()
    }
    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
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

allprojects {
    repositories {
        mavenLocal()
	jcenter()
        /*
         * You will need to define the following properties in "$HOME/.gradle/gradle.properties"
         *
         *   helloAwsAccessKeyID=<Your access key>
         *   helloAwsSecretKey=<Your secret key>
         *
         * Unfortunately, Android Studio on OS X does not properly
         * inherit environment variables defined in your .*profile.
         */
/*        maven {
            url 's3://hello-maven/snapshot'
            credentials(AwsCredentials) {
                accessKey helloAwsAccessKeyID
                secretKey helloAwsSecretKey
            }
        }
        maven {
            url 's3://hello-maven/release'
            credentials(AwsCredentials) {
                accessKey helloAwsAccessKeyID
                secretKey helloAwsSecretKey
            }
        }*/
        google()
    }
}

project.ext.preDexLibs = !project.hasProperty('disablePreDex')

subprojects {
    project.plugins.whenPluginAdded { plugin ->
        if ("com.android.build.gradle.AppPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = rootProject.ext.preDexLibs
        } else if ("com.android.build.gradle.LibraryPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = rootProject.ext.preDexLibs
        }
    }
}