更新AndroidStudio3.0.1出现的问题

今天更新了AS 版本，运行事提示如下错误

Error:Unable to find method ‘com.android.build.gradle.api.BaseVariant.getOutputs()Ljava/util/List;’.
Possible causes for this unexpected error include:

• Gradle’s dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
  Re-download dependencies and sync project (requires network)
• The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
  Stop Gradle build processes (requires restart)
• Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

查阅了很久发现其实是Android Studio3.0与butterknife的冲突，github上面已经有了这个问题issue，JakeWharton大神也给了相关解释，暂时的解决方法是降至8.4的版本。

  classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0'
    -------------------------------------------
  compile 'com.jakewharton:butterknife:8.4.0'
  annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'

stackoverflow上还有其他冲突版本的相应修改