build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public/' }
        maven { url 'https://maven.aliyun.com/repository/google' }
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.0'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.+'
    }
}
plugins {
    id 'maven-publish'
}
allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public/' }
        maven { url 'https://maven.aliyun.com/repository/google' }
        google()
        jcenter()
    }
}

tasks.withType(Javadoc) {
    options{
        encoding "UTF-8"
        charSet 'UTF-8'
        links "http://docs.oracle.com/javase/7/docs/api"
    }
}

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