android tutorial - Android plugin for gradle in android | Developer android - android app development - android studio - android app developement

As described in the remarks section the Android build system uses the Android Plugin for Gradle to support building Android applications with Gradle.

You can specify the Android Plugin for Gradle version in the top-level build.gradle file. The plugin version applies to all modules built in that Android Studio project.

buildscript {
  ...
  dependencies {
    classpath 'com.android.tools.build:gradle:2.2.0'
  }
}