Kotlin with Butterknife

[ythy]

1. kotlin-gradle-plugin 版本不能是 1.0.0

   ext.kotlin_version = '1.1.2'
   dependencies {
       classpath 'com.android.tools.build:gradle:2.2.2'
       classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
       classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0'
       classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
   }

2. Use kapt instead of annotationProcessor(apt) for the compiler dependency.

   
   apply plugin: 'kotlin-kapt'

compile 'com.jakewharton:butterknife:8.4.0' kapt 'com.jakewharton:butterknife-compiler:8.4.0'

[ythy]

注意 Gradle内所有的 apt 都要替换成 kapt 不管相关文件用没用到Kotlin， 否则编译报错

官方：

If you previously used the Android support for annotation processors, replace usages of the annotationProcessor configuration with kapt. If your project contains Java classes, kapt will also take care of them.