build.gradle

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

buildscript {
    repositories {
        maven {
            url 'https://dl.google.com/dl/android/maven2/'
            name 'Google'
        }
        //maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.1'
    }
}

allprojects {
    repositories {
        maven {
            url 'https://dl.google.com/dl/android/maven2/'
            name 'Google'
        }
         // maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        jcenter()
        maven {
            url "https://jitpack.io"
        }
    }
}

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