// 定义适用于所有模块的依赖项 Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:7.0.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.20"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

//在项目级别定义某些属性并在所有模块之间共享这些属性
ext {
    compile_sdk_version = 30        //使用rootProject.ext.compile_sdk_version
}