build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    
    repositories {
        google()
        jcenter()
        mavenCentral()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath 'com.google.gms:google-services:4.3.2'
        //classpath 'com.google.gms:google-services:4.2.0'
    }
}

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

    }

    afterEvaluate { project ->
        def propsFile = rootProject.file('keystore.properties')
        def configName = 'release'

        if (propsFile.exists() && project.hasProperty("android") && project.android.signingConfigs.hasProperty(configName)) {
            def props = new Properties()
            props.load(new FileInputStream(propsFile))
            android.signingConfigs[configName].storeFile = file(props['storeFile'])
            android.signingConfigs[configName].storePassword = props['storePassword']
            android.signingConfigs[configName].keyAlias = props['keyAlias']
            android.signingConfigs[configName].keyPassword = props['keyPassword']
        }
    }
}

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