build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = "1.5.20"
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url "https://jitpack.io" }
        mavenCentral()

    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.2.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url "https://jitpack.io" }
        mavenCentral()

    }
}

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

ext {
    kotlin_version = "1.5.20"
    core_ktx_version = "1.3.2"
    appcompat_version = "1.3.0"
    material_version = "1.2.1"
}