I setup the following in my app's build.gradle fil...

# android

[mattinger]

I setup the following in my app's build.gradle file:

apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'
dependencies {
  kapt "com.google.dagger:dagger-compiler:2.1"
  kapt "com.android.databinding:compiler:$androidGradlePluginVersion"
  kapt "me.tatarka:gradle-retrolambda:3.6.0"
}
kapt {
  generateStubs = true
}

[trevjones]

mattinger: try removing apply plugin: 'kotlin-kapt'

[mattinger]

@trevjones doing that stops the databinding compiler from running altogether, so java files don't compile either.

[stepango]

first of all remove

kapt {
  generateStubs = true
}

it's not needed for kapt 3
AFAIK kotlin does not work with retrolambda

[mattinger]

i agree kotlin does not need retrolambda, but my java code needs it. It seems that i was actually chasing a ghost.

[mattinger]

seems that the java -> kotlin converter did this for me:

@Inject private SettingsManager settingsManager

-->

@Inject internal var settingsManager: SettingsManager? = null

[mattinger]

that's the actual problem.

[mattinger]

I changed it to: lateinit var settingsManager: SettingsManager and it works.

[mattinger]

i also changed the reference to my binding object to be a lateinit as well for good measure.