build.gradle

buildscript {
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.4'
        classpath 'com.google.gms:google-services:4.3.14'
    }
}

dependencies {
    implementation platform('com.google.firebase:firebase-bom:33.2.0')
    implementation("com.google.firebase:firebase-analytics")
}

// use postBuildExtras to make sure the plugin is applied after
// cdvPluginPostBuildExtras. Therefore if googleServices is added
// to cdvPluginPostBuildExtras somewhere else, the plugin execution
// will be skipped and project build will be successfull
ext.postBuildExtras = {
    if (project.extensions.findByName('googleServices') == null) {
        // apply plugin: 'com.google.gms.google-services'
        // class must be used instead of id(string) to be able to apply plugin from non-root gradle file
        apply plugin: com.google.gms.googleservices.GoogleServicesPlugin
        googleServices.disableVersionCheck = true
    }
}