View_showSnackbar.kt

fun View.showSnackbar(snackbarText: String, timeLength: Int) {
    Snackbar.make(this, snackbarText, timeLength).run {
        addCallback(object: Snackbar.Callback() {
            override fun onShown(sb: Snackbar?) {
                EspressoIdlingResource.increment()
            }

            override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
                EspressoIdlingResource.decrement()
            }
        })
        show()
    }
}