MainActvity.kt

override fun onScroll(p0: MotionEvent, p1: MotionEvent, p2: Float, p3: Float): Boolean {

        val transition = Transitioner(lilcardconstraint, bigcardconstraint)

        if (p0.y > p1.y) {

            transition.animateTo(0f,500,AccelerateDecelerateInterpolator())

            animations.fadeInAnimation(guide, 1500)
            animations.fadeInAnimation(arrowup, 1500)

            //manageNFC(nfc)
            //light = false

        } else {

            transition.animateTo(1f,200,AccelerateDecelerateInterpolator())

            animations.fadeOutAnimation(guide, 1000)
            animations.fadeOutAnimation(arrowup, 1000)

            //manageNFC(nfc)
            //light = false
        }

        return true
    }