butterknife 8.4.0

Error:Could not get unknown property 'classpath' for task ':app:transformJackWithJackForDebug'
在project 的build.gradle 中 remove:
buildscript { repositories { ~~mavenCentral() ~~//移除 } dependencies { ~~classpath'com.neenbedankt.gradle.plugins:android-apt:1.8'~~}//移除 }
module-level的build.gradle 中：
dependencies { compile'com.jakewharton:butterknife:8.4.0' ~~apt'com.jakewharton:butterknife-compiler:8.4.0'替換成~~ annotationProcessor'com.jakewharton:butterknife-compiler:8.4.0' }