android - 按比较器排序对象

Question

我需要对对象列表进行排序，首先按日期排序，然后按名称排序。就像下面通过比较器的示例:

- 19/03/2014 Anna Hatta
- 19/03/2014 Keller Jay
- 20/03/2014 Anna Hatta
- 20/03/2014 Keller Jay
- 20/03/2014 Zoner Charley

我知道如何分别按日期和姓名排序，例如:

public static Comparator<Prospect> DATE_ORDER_PROSPECTS = new Comparator<Prospect>() {
    public int compare(Prospect p1, Prospect p2) {
        int res = p2.getDate().compareTo(p1.getDate());
        return res;
    }
};

但是我怎样才能将这两个结合起来并进行嵌套排序呢？

干杯!

Answer 1

public static Comparator<Prospect> DATE_NAME_PROSPECTS = new Comparator<Prospect>() {
    public int compare(Prospect p1, Prospect p2) {
        int res = p1.getDate().compareTo(p2.getDate());
        return res == 0 ? p1.getName().compareTo(p2.getName()) : res;
    }
};