Android ListView中带有时间数据的排序

下面是activity:

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.activity_main);
        mListView = (ListView) this.findViewById(R.id.main_listView);
        mList = new ArrayList<TestDate>();
        initData();
        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
             */
            @Override
            public int compare(TestDate lhs, TestDate rhs) {
                Date date1 = DateUtil.stringToDate(lhs.getDate());
                Date date2 = DateUtil.stringToDate(rhs.getDate());
                // 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;
            }
        });
        mListView.setAdapter(new MyAdapter(this, mList));
    }

    private void initData() {
        mList.add(new TestDate("2012-12-12 12:30", "zhangsan"));
        mList.add(new TestDate("2012-12-12 10:20", "lisi"));
        mList.add(new TestDate("2012-12-11 10:21", "lisi"));
        mList.add(new TestDate("2012-12-11 10:20", "lisi"));
        mList.add(new TestDate("2012-12-13 01:03", "wangwu"));
        mList.add(new TestDate("2012-12-10 02:04", "zhaoliu"));
        mList.add(new TestDate("2012-12-15 23:00", "tianqi"));
        mList.add(new TestDate("2012-11-12 22:30", "wangwu"));
        mList.add(new TestDate("2012-12-17 08:24", "shimei"));
        mList.add(new TestDate("2012-11-10 11:10", "shisanmei"));
        mList.add(new TestDate("2012-12-18 16:50", "wangan"));
        mList.add(new TestDate("2012-12-19 18:00", "wangjiu"));
        mList.add(new TestDate("2012-12-20 19:30", "wusi"));
        mList.add(new TestDate("2012-12-20 19:30", "wusi"));
    }
}

下面是工具类：

public class DateUtil {

    public static Date stringToDate(String dateString) {
        ParsePosition position = new ParsePosition(0);
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        Date dateValue = simpleDateFormat.parse(dateString, position);
        return dateValue;
    }

}

下面是ListView用的Adapter:

public class MyAdapter extends BaseAdapter {

    private Context mContext;
    private List<TestDate> mList;

    public MyAdapter(Context context, List<TestDate> list) {
        this.mContext = context;
        this.mList = list;
    }

    @Override
    public int getCount() {
        return mList != null ? mList.size() : 0;
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView == null) {
            convertView = (LinearLayout) LayoutInflater.from(mContext).inflate(
                    R.layout.main_item, null);
            holder = new ViewHolder();
            holder.textView1 = (TextView) convertView
                    .findViewById(R.id.item_textView1);
            holder.textVeiw2 = (TextView) convertView
                    .findViewById(R.id.item_textView2);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.textView1.setText(mList.get(position).getDate());
        holder.textVeiw2.setText(mList.get(position).getName());

        return convertView;
    }

    private class ViewHolder {
        private TextView textView1;
        private TextView textVeiw2;
    }

}

下面是xml文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ListView
        android:id="@+id/main_listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        tools:context=".MainActivity" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <TextView
        android:id="@+id/item_textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_margin="10dp" />

    <TextView
        android:id="@+id/item_textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical" />

</LinearLayout>

下面是一个JavaBean的类：

public class TestDate {
    
    private String date;
    private String name;

    public String getDate() {
        return date;
    }

    public String getName() {
        return name;
    }

    public TestDate(String date, String name) {
        this.date = date;
        this.name = name;
    }

}