Android sort按时间排序

package cn.customlist; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Date; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.widget.Button; import android.widget.ListView; public class mainActivity extends Activity { private ListView mListView = null; private List<TestDate> mList = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mListView = (ListView) this.findViewById(R.id.list); mList = new ArrayList<TestDate>(); initData(); // 排序前 System.out.println("Before sort."); for ( TestDate m : mList) { System.out.println(m.getTv1()); } Collections.sort(mList, new Comparator<TestDate>() { /** * * @param lhs * @param rhs * @return an integer < 0 if lhs is less than rhs, 0 if they are * equal, and > 0 if lhs is greater than rhs,比较数据大小时,这里比的是时间 */ public int compare(TestDate lhs, TestDate rhs) { Date date1 = DateUtil.stringToDate(lhs.getTv1()); Date date2 = DateUtil.stringToDate(rhs.getTv1()); // 对日期字段进行升序，如果欲降序可采用after方法 if (date1.before(date2)) { return 1; } return -1; } }); System.out.println("After sort."); for (TestDate m : mList) { System.out.println(m.getTv1()); } mListView.setAdapter(new MyAdapter(this, mList)); } private void initData() { mList.add(new TestDate("2014-12-12 12:30", "2014-12-12 12:55","济南","东营", "33")); mList.add(new TestDate("2014-12-12 10:20","2014-12-12 12:30","泰安","东营", "lisi")); mList.add(new TestDate("2014-12-11 10:21", "2014-12-11 12:30","济南","东营","lisi")); mList.add(new TestDate("2014-12-11 10:20", "2014-12-11 12:30","济南","东营","lisi")); mList.add(new TestDate("2014-12-13 01:03","2014-12-13 12:30","河南","东营", "wangwu")); mList.add(new TestDate("2014-12-15 10:04", "2014-12-15 12:30","济南","东营","zhaoliu")); mList.add(new TestDate("2014-12-15 10:00", "2014-12-15 12:30","济南","东营","tianqi")); mList.add(new TestDate("2014-12-12 6:30","2014-12-12 12:30","青岛","东营", "wangwu")); mList.add(new TestDate("2014-12-17 08:24", "2014-12-17 12:30","济南","东营","shimei")); mList.add(new TestDate("2014-11-10 11:10", "2014-11-10 12:30","济南","东营","shisanmei")); mList.add(new TestDate("2014-12-18 16:50","2014-12-18 18:30","济南","东营", "wangan")); mList.add(new TestDate("2014-12-19 18:00", "2014-12-19 22:30","济南","东营","wangjiu")); mList.add(new TestDate("2014-12-20 19:30","2014-12-20 22:30","济南","东营", "wusi")); mList.add(new TestDate("2014-12-20 19:30", "2014-12-20 23:30","济南","东营","wusi")); } }