build.gradle

def configDir = new File(rootDir, 'config')

buildscript {
    
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven {
            url "https://oss.sonatype.org/content/repositories/snapshots"
        }
    }

    apply plugin: 'checkstyle'

    checkstyle {
        toolVersion = "8.10"
        configFile = new File(configDir, 'checkstyle.xml')
        configProperties.checkstyleConfigDir = configDir
    }

    task checkstyle(type: Checkstyle) {
        configFile = new File(configDir, 'checkstyle.xml')
        configProperties.checkstyleConfigDir = configDir
        source 'src/main/java', 'src/test/java'
        include '**/*.java'
        exclude '**/gen/**'
        classpath = files()

        reports {
            xml.enabled = false
            html.enabled = true
            html.setDestination new File("$project.buildDir/outputs/checkstyle/checkstyle.html")
        }
    }
}

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