Scroll or recycler view reach bottom

// RV Reach Bottom
// orderRecyclerView is XML @+id/
orderRecyclreView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
    override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
        val visibleItemCount = layoutManager.childCount
        val pastVisibleItem = layoutManager.findFirstVisibleItemPosition()
        val lastItemPosition =  layoutManager.findLastVisibleItemPosition()
        val total = orderAdapter.itemCount

        if (!recyclerView.canScrollVertically(1)) {
            if (visibleItemCount+pastVisibleItem>=total) {
             // todo code here
        }

        super.onScrollStateChanged(recyclerView, newState)
    }
})

// Nested Scroll View Reach Bottom
// orderNestedScrollView is XML @+id/
orderNestedScrollView.setOnScrollChangeListener(NestedScrollView.OnScrollChangeListener { v, scrollX, scrollY, oldScrollX, oldScrollY ->
    if (scrollY == v.getChildAt(0).measuredHeight - v.measuredHeight) {
        // todo code here
    }
})