android studio 导入项目遇到如下问题 百度不出来 希望大家帮帮忙

Error:(22, 0) Gradle DSL method not found: 'android()'
Possible causes:

• The project 'clue' may be using a version of Gradle that does not contain the method.
  Open Gradle wrapper file
• The build file may be missing a Gradle plugin.
  Apply Gradle plugin

http://stackoverflow.com/questions/27078075/gradle-dsl-method-not-found-runproguard

http://www.hloong.com/?p=100
http://www.bubuko.com/infodetail-987936.html
http://code2care.org/2015/error-19-0-gradle-dsl-method-not-found-android-studio/

看英文意思是说没有Gradle插件，