android studio when I try add dependency into the project Gradle file I get this error

Question

dependencies {
   …
"android.arch.navigation:navigation-safe-args-gradle-plugin:$version_navigation"
}

I get this error : Caused by: groovy.lang.MissingPropertyException: Could not get unknown property version_navigation for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

Answer 1

You seem to have missing to define version_navigation.

This can be done in your top level build.gradle file:

buildscript {
    ext {
        version_navigation = '1.0.0'
    }