listrecord.java

基于WINCE5.0的ARM嵌入式手机上层软件开发

/*
 * 记录列表
 */
package PhoneBook;

import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
import javax.microedition.rms.*;

public class ListRecord extends List implements CommandListener {

    private Displayable dis;
    private MIDlet mid;
    private RecordStore rs = null;
    private RecordEnumeration re = null;
    private static final Command lookCommand = new Command("查看", Command.OK, 1);
    private static final Command backCommand = new Command("返回", Command.BACK,
            2);
    //父屏幕的参数是dis

    public ListRecord(String title, int listType, Displayable dis, MIDlet mid,
            RecordStore rs) {
        super(title, listType);
        this.dis = dis;
        this.mid = mid;
        this.rs = rs;

        this.addCommand(backCommand);
        this.addCommand(lookCommand);
        this.setCommandListener(this);

        SortComparator sortCom = new SortComparator();
        if (rs != null) {
            try {
                //Image icon = Image.createImage("/txt.png");
                //按照名字的字符串大小排序
                re = rs.enumerateRecords(null, sortCom, true);
                //添加列表项
                while (re.hasNextElement()) {
                    //分解数据库记录数据
                    BookAccount account = BookAccount.deserialize(re.nextRecord());
                    //把名字添加到列表中
                    int index = this.append(account.getUserName(), null);

                }
            } catch (Exception e) {
            } finally {
                if (re != null) {
                    re.destroy();
                }
            }
        }

    }

    public void commandAction(Command c, Displayable d) {
        if (c == backCommand) {
            Display.getDisplay(mid).setCurrent(dis);
        }
        if (c == lookCommand) {
            //进入记录编辑界面
            EditDetailInfo edInfo = new EditDetailInfo("查看和修改记录", this, mid,
                    rs, this.getString(this.getSelectedIndex()));
            Display.getDisplay(mid).setCurrent(edInfo);
        }
    }
}