How to know whether a RecyclerView / LinearLayoutManager is scrolled to top or bottom?

Question

Currently I am using the follow code to check whether SwipeRefreshLayout should be enabled.

private void laySwipeToggle() {
    if (mRecyclerView.getChildCou         


        

Answer 1

To find out if the RecyclerView is scrolled to bottom, you could reuse the methods used for the scrollbar.

This is the calculation, for convenience written as a Kotlin extension function:

fun RecyclerView.isScrolledToBottom(): Boolean {
    val contentHeight = height - (paddingTop + paddingBottom)
    return computeVerticalScrollRange() == computeVerticalScrollOffset() + contentHeight
}