[编译结束后声音通知] #Gradle

build.gradle

android {
  applicationVariants.all { variant ->
    def assembleTask
    if (variant.hasProperty('assembleProvider')) {
      assembleTask = variant.assembleProvider.get()
    } else {
      assembleTask = variant.assemble
    }
    assembleTask.doLast {
      exec {
        commandLine 'say', 'Build Success'
      }
    }
  } 
}