findrecord.java

基于WINCE5.0的ARM嵌入式手机上层软件开发

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package PhoneBook;
import java.io.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordFilter;
import javax.microedition.rms.RecordStore;
/**
 *
 * @author Administrator
 */
public class FindRecord extends Form implements CommandListener{
	private Displayable dis;
	private MIDlet mid;
	private RecordStore rs = null;
	private RecordEnumeration re = null;
	private static final Command findCommand = new Command("查找", Command.OK, 1);
	private static final Command backCommand = new Command("返回", Command.BACK,2);
	//private	RecordEnumeration re = null;
	private TextField tf;
	public FindRecord(Displayable dis,MIDlet mid,RecordStore rs) {
		super("查询记录");
		tf = new TextField("输入名字",null, 120,TextField.ANY);
		//设置控件的布局
		tf.setLayout(Item.LAYOUT_NEWLINE_AFTER);
		this.append(tf);
		this.dis = dis;
		this.mid = mid;
		this.rs = rs;

		this.addCommand(backCommand);
		this.addCommand(findCommand);
		this.setCommandListener(this);
	}
	public void commandAction(Command c, Displayable d) {
		if (c == backCommand) {
			Display.getDisplay(mid).setCurrent(dis);
		}
		if (c == findCommand) {

			RecordFilter rf = new FindFilter(tf.getString());
			try {
				re = rs.enumerateRecords(rf, null, false);
			} catch (Exception e) {
			}
			//查找成功
			if (re.numRecords() > 0) {
				BookAccount account = null;
				int recordID;
				try {
					byte[] rec;
					recordID = re.nextRecordId();
					rec = rs.getRecord(recordID);
					account = BookAccount.deserialize(rec);
					StringItem name = new StringItem("姓名：",account.getUserName());
					StringItem mobilePhone = new StringItem("移动电话：",account.getMobilePhone());
					StringItem phone = new StringItem("家庭电话：",account.getPhone());
					StringItem email = new StringItem("电子邮件：",account.getEmail());

					name.setLayout(Item.LAYOUT_NEWLINE_AFTER);
					mobilePhone.setLayout(Item.LAYOUT_NEWLINE_AFTER);
					phone.setLayout(Item.LAYOUT_NEWLINE_AFTER);
					email.setLayout(Item.LAYOUT_NEWLINE_AFTER);

					this.append(name);
					this.append(mobilePhone);
					this.append(phone);
					this.append(email);
					account = null;
					re.destroy();

				} catch (Exception e) {
					account = null;
					System.out.println("deserialize error");
				}
			}
		}
	}
}