editdetailinfo.java

基于j2me的手机应用程序-电话本

/*
 * 查看和编辑记录
 */
package PhoneBook;

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

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){		 	
	 			
	 			//添加一个新记录
	 			BookAccount account = new BookAccount(nameField.getText(),
	 					mobileField.getString(),emailField.getString(),
						phoneField.getString());
	 			try{
	 				byte[] rec = account.serialize();		 				
	 				rs.setRecord(recordID,rec, 0, rec.length);
	 				Display.getDisplay(mid).setCurrent(dis);
	 			}catch(Exception e){
	 				
	 			}
	 		}

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

		}

	}

}