build.gradle

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

buildscript {
    repositories {
        jcenter()
        maven { url 'https://dl.google.com/dl/android/maven2/' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.1'

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

allprojects {
    repositories {
        jcenter()
        maven { url 'https://oss.sonatype.org/content/repositories/releases' }
        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
        maven { url 'https://dl.google.com/dl/android/maven2/' }
    }
}

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

subprojects {
    ext.compileSdkVersion = 29
    ext.buildToolsVersion = '29.0.2'
    ext.supportLibrariesVersion = '28.0.0'
    ext.minSdkVersion = '14'
    ext.targetSdkVersion = '25'
}