Android Onboarding Pop Animation

MainActivity.kt

private fun hopAnimation() {
        val animation = bottomContainer
            .animate()
            .translationYBy(-40f)
            .alpha(0.9f)
            .setDuration(400)
        animation.withEndAction {
            bottomContainer
                .animate()
                .alpha(0.5f)
                .translationYBy(40f).duration = 400
        }
    }