New - Unresolved reference: kotlinx

Question

although:

classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"

is already stated in the project build.gradle file

using Android Studio 2.1.3

Kotlin plugin version 1.0.3

target SDK version is 24

minimum SDK version is 19

Answer 1

apply plugin: 'kotlin-android-extensions'

Solved this problem, Im not reading the Kotlin manual.