List view snap to item

Question

I\'m creating a list of pictures using a ListView and the photos are of a size that would fit 2 to 3 photos on the screen.

The problem that I\'m having is that I wou

Answer 1

I've found a way to do this just listening to scroll and change the position when the scroll ended by implementing ListView.OnScrollListener

@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
    switch (scrollState) {
    case OnScrollListener.SCROLL_STATE_IDLE:
        if (scrolling){
            // get first visible item
            View itemView = view.getChildAt(0);
            int top = Math.abs(itemView.getTop()); // top is a negative value
            int bottom = Math.abs(itemView.getBottom());
            if (top >= bottom){
                ((ListView)view).setSelectionFromTop(view.getFirstVisiblePosition()+1, 0);
            } else {
                ((ListView)view).setSelectionFromTop(view.getFirstVisiblePosition(), 0);
            }
        }
        scrolling = false;
        break;
    case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
    case OnScrollListener.SCROLL_STATE_FLING:
        Log.i("TEST", "SCROLLING");
        scrolling = true;
        break;
    }
}

The change is not so smooth but it works.