build.gradle

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

buildscript {
    repositories {
        google()
        jcenter()
        
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.2'
        
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()

        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/'}

        maven { url'https://maven.aliyun.com/repository/public/' }

        maven { url'https://maven.aliyun.com/repository/google/' }

        maven { url'https://maven.aliyun.com/repository/jcenter/' }

        maven { url'https://maven.aliyun.com/repository/central/' }
        maven {url 'https://dl.bintray.com/jetbrains/anko'} //这是你需要加入的，这个是解决这个问题的关键地方，我就是添加这个maven后不

        jcenter()
        
    }
}

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