listview是否拉到底部

protected boolean isLastItemVisible() {

        final Adapter adapter1 = listView.getAdapter();

        if (null == adapter || adapter.isEmpty()) {

            return true;

        }

        final int lastItemPosition = adapter.getCount() - 1;

        final int lastVisiblePosition = listView.getLastVisiblePosition();

       

        if (lastVisiblePosition >= lastItemPosition - 1) {

            final int childIndex = lastVisiblePosition - listView.getFirstVisiblePosition();

            final int childCount = listView.getChildCount();

            final int index = Math.min(childIndex, childCount - 1);

            final View lastVisibleChild = listView.getChildAt(index);

            if (lastVisibleChild != null) {

                return lastVisibleChild.getBottom() <= listView.getBottom();

            }

        }

        return false;

    }