Android Studio 3.0 annotationProcessor [duplicate]

Answer 1

you have to add annotationProcessorOptions in app level gradle.

android {    
compileSdkVersion 26    
buildToolsVersion '26.0.2'    
defaultConfig { 
   applicationId "com.your.packagename"  
   minSdkVersion 16
   targetSdkVersion 26
   versionCode 1
   versionName "1.0"
   testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 

   // add below section
   javaCompileOptions {
        annotationProcessorOptions {
            includeCompileClasspath true
        }
    }
 }
}