Gradle

step1

enable dataBinding in your app/build.gradle:

    dataBinding
            {
                enabled=true
            }

step2

Add this in your root build.gradle at the end of repositories.

allprojects {
		repositories {
			maven { url 'https://jitpack.io' }
		}
}

step3

add the dependency in your build.gradle.

    implementation 'android.arch.lifecycle:extensions:1.1.0'