MainActivity.kt

(map_view as SupportMapFragment).getMapAsync { map ->
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(jakartaLatLng, 18f))

    val oldPosition = map.cameraPosition.target

    map.setOnCameraMoveStartedListener {
        // drag started

        // start animation
        icon_marker.animate().translationY(-50f).start()
        icon_marker_shadow.animate().withStartAction {
            icon_marker_shadow.setPadding(10)
        }.start()
    }

    map.setOnCameraIdleListener {
        val newPosition = map.cameraPosition.target
        if (newPosition != oldPosition) {
            // drag ended

            // start animation
            icon_marker.animate().translationY(0f).start()
            icon_marker_shadow.animate().withStartAction {
                icon_marker_shadow.setPadding(0)
            }.start()
        }
    }
}