Android java项目中引用kotlin,混合开发工程配置

https://www.jianshu.com/p/9220227cdfb3

buildscript {
    ext.kotlin_version = '1.2.71'
    repositories {
        google()
        jcenter()
    }
    dependencies {
        //classpath 'com.android.tools.build:gradle:3.1.0-alpha09'
        classpath 'com.android.tools.build:gradle:3.2.1'

        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
    }
}

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android {
     ....
}