将现有的 groovy build.gradle 文件转换为基于 kotlin 的 build.gradle.kts

my project has two different build.gradle files written with groovy Syntax. I´d like to change this groovy written gradle file into a gradle file written with Kotlin Syntax (build.gradle.kts).

我将向您展示根项目build.gradle文件.

    // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    //ext.kotlin_version = '1.2-M2'
    ext.kotlin_version = '1.1.51'
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0-alpha01'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
}

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

I tried several "ways" i found in the internet, but nothing worked. Renaming the file, which is obviously not the Solution, didn´t help. I´ve created a new build.gradle.kts file in my root project but the file isn´t shown in my project. Also gradle didn´t recognize the new file.

所以我的问题是:如何转换groovy构建.将文件升级到kotlin版本中.格雷德尔.kts并将这个新文件添加到我现有的项目中？

谢谢你的帮助.