对列表进行排序

private void sortList() {
//sort
Comparator itemComparator = new Comparator() {
public int compare(PanYuanItemBean a, PanYuanItemBean b) {
/方法一/
//return a.getDistance().compareTo(b.getDistance());

            double x = Double.parseDouble(a.getDistance());            double y = Double.parseDouble(b.getDistance());            return (int) (x - y);        }    };    //方法二对小数有小误差    Collections.sort(mlist, itemComparator);    //    LogUtils.E(mlist.size() + "sort后--");}