基于j2me的手机应用程序-电话本

				
				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;
				
				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 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());
							RecordEnumeration re = null;
							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");
								}
							}
						}
					}
					
				}