buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
         //版本号请根据自己的gradle插件版本号自行更改
        classpath 'com.android.tools.build:gradle:3.4.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

参考：https://www.xfyun.cn/doc/asr/offline_iat/Android-SDK.html#_2%E3%80%81sdk%E9%9B%86%E6%88%90%E6%8C%87%E5%8D%97