alexshr

/**
     * Snackbar LiveEvent
     * (see https://github.com/hadilq/LiveEvent)
     * This is private because we don't want to expose setting this value to the Fragment.
     */

    private val snackBarEvent = LiveEvent<String>()
    val showSnackBarEvent: LiveData<String> = snackBarEvent

//https://github.com/hadilq/LiveEvent

alexshr

 // Observe snackbar event
        sleepTrackerViewModel.showSnackBarEvent.observe(this, Observer {
            binding.clearButton.snackbar(it)
        })

//Anko
    implementation "org.jetbrains.anko:anko-commons:$version_anko"
    implementation "org.jetbrains.anko:anko-design:$version_anko" // For SnackBars

alexshr

//my sample 
//https://github.com/alexshr/android-kotlin-fundamentals-apps/tree/master/MarsRealEstateFinal

//doc
//https://developer.android.com/reference/kotlin/androidx/fragment/app/package-summary#viewmodels

version_fragment = '1.2.0-alpha01'

implementation "androidx.fragment:fragment-ktx:${version_fragment}"
--------------------------------------------------------------------------------------

alexshr

sample:
https://github.com/alexshr/android-kotlin-fundamentals-apps/tree/master/MarsRealEstateFinal
---------------------------------------------

//https://github.com/hadilq/LiveEvent
implementation "com.github.hadilq.liveevent:liveevent:1.0.1"
-----------------------------
ViewModel:

/**

alexshr

allprojects {
    repositories {
        .......
        maven { url "https://jitpack.io" }
    }
--------------------
//ext lib
implementation 'com.github.wada811:DataBinding-ktx:2.0.2'
-------------------------------------