build.gradle

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

buildscript {
    repositories {
        jcenter()
        // maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        //classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

        classpath "io.realm:realm-gradle-plugin:5.7.0"

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

allprojects {
    repositories {
        jcenter()
        // maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        maven { url "https://jitpack.io" }
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        maven { url "https://maven.google.com" }
        google()
    }
}

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

ext {
    compileSdkVersion = 27
    minSdkVersion = 16
    targetSdkVersion = 27
    buildToolsVersion = "28.0.3"
    supportVersion = "27.1.1"
}