AutoRotation

fun autoRotate(pager: ViewPager2, data: BannerRow, childCount: Int) {
        timer = Timer()
        timer.scheduleAtFixedRate(object : TimerTask() {
            override fun run() {
                var next = pager.currentItem
                if (!data.shuffle) {
                    if (next >= childCount - 1) {
                        next = 0
                    } else {
                        next += 1
                    }
                } else {
                    while (true) {
                        val random = Random().nextInt(childCount - 1)
                        if (random != pager.currentItem) {
                            next = random
                            break
                        }
                    }
                }
                pager.currentItem = next
            }
        }, 3000, data.autoScrollRateInSeconds.toLong() * 1000)
    }