build.gradle

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

buildscript {
    repositories {
        google()
        jcenter()
        
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0-alpha01'
        
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

def getProperty(String filename, String propName) {
    def propsFile = rootProject.file(filename)
    if (propsFile.exists()) {
        def props = new Properties()
        props.load(new FileInputStream(propsFile))
        if (props[propName] != null) {
            return props[propName]
        } else {
            print("No such property " + propName + " in file " + filename);
        }
    } else {
        print(filename + " does not exist!")
    }
}