build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = '1.4.21'
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }
        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.2'

        classpath "com.alibaba:arouter-register:1.0.2"

        classpath 'com.jakewharton:butterknife-gradle-plugin:10.2.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

ext {
    compileSdkVersion = 30
    buildToolsVersion = '30.0.3'
    minSdkVersion = 24
    targetSdkVersion = 30
    versionCode = 1
    versionName = '1.0.0'
}