editdetailinfo.java

基于WINCE5.0的ARM嵌入式手机上层软件开发

/*
 * 查看和编辑记录
 */
package PhoneBook;

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

/**
 *
 * @author Administrator
 */
public class EditDetailInfo extends Form implements CommandListener {

    private StringItem nameField;
    private TextField mobileField;
    private TextField phoneField;
    private TextField emailField;
    private Displayable dis;
    private MIDlet mid;
    private RecordStore rs = null;
    private int recordID;
    private static final Command saveCommand = new Command("保存", Command.OK, 2);
    private static final Command backCommand = new Command("返回", Command.BACK, 3);

    public EditDetailInfo(String title, Displayable dis, MIDlet mid,
            RecordStore rs, String name) {
        super(title);
        this.dis = dis;
        this.mid = mid;
        this.rs = rs;

        nameField = new StringItem(BookConstant.name, name);
        mobileField = new TextField(BookConstant.mobile, null, 25, TextField.PHONENUMBER);
        phoneField = new TextField(BookConstant.phone, null, 25, TextField.PHONENUMBER);
        emailField = new TextField(BookConstant.email, null, 25, TextField.EMAILADDR);

        this.append(nameField);
        this.append(mobileField);
        this.append(phoneField);
        this.append(emailField);

        RecordFilter rf = new FindFilter(name);
        RecordEnumeration re = null;
        try {
            re = rs.enumerateRecords(rf, null, false);
        } catch (Exception e) {
        }
        //查找成功
        if (re.numRecords() > 0) {
            BookAccount account = null;
            try {
                byte[] rec;
                recordID = re.nextRecordId();
                rec = rs.getRecord(recordID);
                account = BookAccount.deserialize(rec);
                //nameField.setString(account.getUserName());
                mobileField.setString(account.getMobilePhone());
                phoneField.setString(account.getPhone());
                emailField.setString(account.getEmail());

                account = null;
                re.destroy();

            } catch (Exception e) {
                account = null;
                System.out.println("deserialize error");
            }
        }
        this.addCommand(saveCommand);
        this.addCommand(backCommand);
        this.setCommandListener(this);
    }

    public void commandAction(Command c, Displayable d) {
        if (c == saveCommand) {
            if (rs != null) {

                //更新记录
                BookAccount account = new BookAccount(nameField.getText(),
                        mobileField.getString(), emailField.getString(),
                        phoneField.getString());
                try {
                    byte[] rec = account.serialize();//像RMS中写入记录
                    rs.setRecord(recordID, rec, 0, rec.length);
                    Display.getDisplay(mid).setCurrent(dis);
                } catch (Exception e) {
                }
            }

        } else if (c == backCommand) {
            Display.getDisplay(mid).setCurrent(dis);

        }
    }
}