Android: onScrollStateChanged SCROLL_STATE_IDLE sometimes doesn't fire

I had the same problem, so my solution was to just detect if the scrollview position has reached the last page and in that case always load the images regardless of the scroll state (since the problem seems to always occur when the user flings to the end of the listview). So modifying your code you would have:

mList.setOnScrollListener(new OnScrollListener() {

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        mListAdapter.setIsScrolling(scrollState != SCROLL_STATE_IDLE);
        Log.i(this, "scrollStateChanged" + scrollState);

        int first = view.getFirstVisiblePosition();
        int count = view.getChildCount();

        if (scrollState == SCROLL_STATE_IDLE || (first + count > mListAdapter.getCount()) ) {
            mList.invalidateViews();
        }
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
    }
});