Android ListView - stop scrolling at 'whole' row position

Question

Sorry for the confusing title, I cannot express the problem very concisely...

I have an Android app with a ListView that uses a circular / \"infinite\" adapter, whi

Answer 1

You probably solved this problem but I think that this solution should work

if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
    View firstChild = lv.getChildAt(0);
    int pos = lv.getFirstVisiblePosition();

    //if first visible item is higher than the half of its height
    if (-firstChild.getTop() > firstChild.getHeight()/2) {
        pos++;
    }

    lv.setSelection(pos);
}

getTop() for first item view always return nonpositive value so I don't use Math.abs(firstChild.getTop()) but just -firstChild.getTop(). Even if this value will be >0 then this condition is still working.

If you want to make this smoother then you can try to use lv.smoothScrollToPosition(pos) and enclose all above piece of code in

if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
    post(new Runnable() {
        @Override
        public void run() {
            //put above code here
            //and change lv.setSelection(pos) to lv.smoothScrollToPosition(pos)
        }
    });
}