RecyclerView.onEndScrollListener.kt

fun  RecyclerView.onEndScrollListener(listener:()->Unit){
        this.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
                super.onScrollStateChanged(recyclerView, newState)
                if (!recyclerView.canScrollVertically(1) && newState == RecyclerView.SCROLL_STATE_IDLE) {
                    listener()
                }
            }
        })
    }