J2ME—备忘录代码.doc

学习目标通过本次课程设计的实训任务，使学生能够能够创建、打开、关闭和删除记录存储器；能够在记录存储器中读写记录；能够在记录存储器中查询记录。任务内容及要求模拟备忘录：（1）界面出现，显示一个欢迎界面，右下角按钮：备忘录；左下角按钮：退出（2）按备忘录按钮，显示备忘录界面，用List显示所有备忘录(List每一项包括时间和备忘录内容)；界面上左下角：返回；右下角两个按钮：添加备忘录，删除备忘录。（3）按删除备忘录，删掉当前选中的备忘录；按添加备忘录，进入添加备忘录界面，该界面有二个表单元素，选择时间（DataField）并输入备忘录内容(TextField)，按确定，可以添加，添加完毕，进入显示备忘录界面；该界面左下角的返回按钮供返回。实训实施建议一 、综合实训环境1.硬件环境嵌入式实训室（45台电脑）。2.软件环境JDK1.6； Eclipse3.4.1；WTK；Eclipse ME二、单元实训安排1.实训学时4学时2.实训方式以个人为单位，采取任务引导+课内实训，主要以课内训练为主。三、考核方式 本次单元实训要求每位同学提供程序源代码和实训成果展示，参考在此单元实训过程中的表现评分。学习评价能够完整的完成源代码，程序没有任何Bug，能够很好地展示实训成果，评A能够较完整完成源代码，程序有些小Bug，能够较好地展示实训成果，评B能够完成主要源代码，程序有些小问题，展示主要实训成果，评C基本完成主要源代码，程序有些较大问题，展示部分实训成果，评有D不能够完成源代码，程序有大量错误，也不能够展示实训成果，评E小组成员代码：Addform类：import java.util.Date;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.DateField;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.Form;import javax.microedition.lcdui.TextField;public class AddForm_13 extends Form implements CommandListener private Command cmdOK=new Command(确定,Command.SCREEN,1); private Command cmdBack=new Command(返回,Command.BACK,1); private TextField tfContent=new TextField(请您输入内容,50,TextField.ANY); private DateField tfDate=new DateField(请您选择时间,DateField.DATE_TIME); private MemoMIDlet_13 p; private MemoList_13 memoList; AddForm_13(MemoMIDlet_13 p,MemoList_13 memoList) super(添加内容); this.p=p; this.memoList=memoList; this.addCommand(cmdBack); this.addCommand(cmdOK); this.setCommandListener(this); this.append(tfContent); this.append(tfDate); public void commandAction(Command c,Displayable d) if(c=cmdBack) p.changeForm(MemoList_13); else if(c=cmdOK) String strContent=tfContent.getString(); Date date =tfDate.getDate(); RMSOpe_13 rmsOpe=new RMSOpe_13(RS1); rmsOpe.addContent(strContent, date ); memoList.refresh(); this.p.changeForm(MemoList_13); MemoList类：import java.util.Vector;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.List;public class MemoList_13 extends List implements CommandListener private Command cmdBack=new Command(返回,Command.BACK,1); private Command cmdAdd=new Command(添加内容,Command.SCREEN,1); private Command cmdDel=new Command(删除内容,Command.SCREEN,1); private MemoMIDlet_13 p; MemoList_13(MemoMIDlet_13 p) super(备忘录,List.IMPLICIT); this.p=p; this.addCommand(cmdBack); this.addCommand(cmdAdd); this.addCommand(cmdDel); this.setCommandListener(this); public void commandAction(Command c,Displayable d) if(c=cmdBack) p.changeForm(WelcomeCanvas_13); else if(c=cmdAdd) p.changeForm(AddForm_13); else if(c=cmdDel) /删除电话号码 String strContent=this.getString(this.getSelectedIndex(); RMSOpe_13 rmsOpe=new RMSOpe_13(RS1); rmsOpe.deleteDate(strContent);/只删除了记录集里的记录，但list里的还没删 /以下是重新从记录集里取出所有记录，并根据这些记录更新list refresh(); public void refresh() RMSOpe_13 rmsOpe=new RMSOpe_13(RS1); Vector v=rmsOpe.getAllPhone(); this.deleteAll(); for(int i=0;iv.size();i+) String str=(String)v.elementAt(i); this.append(str, null); MemoMIDlet类：import javax.microedition.lcdui.Display;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class MemoMIDlet_13 extends MIDlet public Display dis;private WelcomeCanvas_13 wc=new WelcomeCanvas_13(this);private MemoList_13 memoList=new MemoList_13(this);private AddForm_13 addForm=new AddForm_13(this,memoList);public MemoMIDlet_13() / TODO Auto-generated constructor stubprotected void destroyApp(boolean arg0) throws MIDletStateChangeException / TODO Auto-generated method stubprotected void pauseApp() / TODO Auto-generated method stubprotected void startApp() throws MIDletStateChangeException dis=Display.getDisplay(this);dis.setCurrent(wc); public void changeForm(String name) if(name.equals(WelcomeCanvas_13) dis.setCurrent(wc); else if(name.equals(MemoList_13) dis.setCurrent(memoList); else if(name.equals(AddForm_13) dis.setCurrent(addForm); RMSOpe：import java.util.Date;import java.util.Vector;import javax.microedition.rms.RecordEnumeration;import javax.microedition.rms.RecordStore;import javax.microedition.rms.RecordStoreException;import javax.microedition.rms.RecordStoreFullException;import javax.microedition.rms.RecordStoreNotFoundException;public class RMSOpe_13 private RecordStore rs; private String rsContent; RMSOpe_13(String content) rsContent=content; public void openRecordStore() try rs=RecordStore.openRecordStore(rsContent,true); catch (Exception e) e.printStackTrace(); public void closeRecordStore() try rs.closeRecordStore(); catch(Exception e) e.printStackTrace(); public void addContent(String strContent,Date date ) String info=strContent+ : +date; byte b=info.getBytes(); try openRecordStore(); rs.addRecord(b, 0, b.length); catch(Exception e) e.printStackTrace(); public void deleteDate(String content) try openRecordStore(); int nextRecordId=rs.getNextRecordID(); for(int i=1;inextRecordId;i+) try byte b=rs.getRecord(i); String str=new String(b); if(str.equals(content) rs.deleteRecord(i); catch(Exception ex) catch(Exception ex)ex.printStackTrace(); finallycloseRecordStore(); public Vector getAllPhone() Vector v=new Vector(); try openRecordStore(); RecordEnumeration re=rs.enumerateRecords(null,null,true); while(re.hasNextElement() byteb=re.nextRecord(); String str=new String(b); v.addElement(str); catch(Exception ex)ex.printStackTrace(); finallycloseRecordStore(); return v; WelcomeCanvas：import javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Displayable;import javax.microeditio