smoothScrollToPositionFromTop() is not always working like it should

Question

I\'ve been trying for a while to get smoothScrollToPositionFromTop() working, but it doesn\'t always scroll to the correct position.

I\'ve got a ListView (with 10 i

Answer 1

Here is Lars Blumberg answer in Kotlin including dira's comment, it is working for me.

private fun smoothScrollToPositionFromTop(listView: AbsListView, position: Int, offset: Int) {

    listView.setOnScrollListener(object : AbsListView.OnScrollListener {

        override fun onScroll(
            view: AbsListView?,
            firstVisibleItem: Int,
            visibleItemCount: Int,
            totalItemCount: Int
        ) { }

        override fun onScrollStateChanged(view: AbsListView?, scrollState: Int) {
            view?.setOnScrollListener(null)

            // Fix for scrolling bug.
            if (scrollState == SCROLL_STATE_IDLE) {
                Handler(Looper.getMainLooper()).post {
                    listView.setSelectionFromTop(position, offset)
                }
            }
        }
    })

    // Perform scrolling to position
    Handler(Looper.getMainLooper()).post {
        listView.smoothScrollToPositionFromTop(position, offset)
    }
}