J2me手機游戲存儲玩家分數(shù)源碼

1、J2me手機游戲存儲玩家分數(shù)源碼package shiyan23;import java.io.*;import javax.microedition.lcdui.*;import javax.microedition.rms.*;public class Displayable1 extends Form public Form form; /* Constructor */ public TextField t1; public TextField t2; private RecordStore rs; private Display dis; public Displayable1(Di

2、splay dis) super(""); this.dis=dis; this.form=this; try jbInit(); catch (Exception e) e.printStackTrace(); /*Component initialization*/ private void jbInit() throws Exception / Set up this Displayable to listen to command events setCommandListener(new CommandListener() public void commandA

3、ction(Command command, Displayable displayable) this_commandPerformed(command, displayable); ); / add the Exit command addCommand(new Command("Exit", Command.EXIT, 1); addCommand(new Command("存儲", Command.SCREEN, 1); addCommand(new Command("高分榜", Command.SCREEN, 1); t1

4、= new TextField("游戲玩家", "play1", 10, TextField.ANY); t2 = new TextField("當前分數(shù)", "0", 10, TextField.NUMERIC); append(t1); append(t2); /*Handle command events*/ public void this_commandPerformed(Command command, Displayable displayable) /* todo Add command handl

5、ing code */ if (command.getCommandType() = Command.EXIT) / stop the MIDlet MIDlet1.quitApp(); if (command.getLabel().equals("存儲") try rs=RecordStore.openRecordStore("shiyan23", true); ByteArrayOutputStream bo=new ByteArrayOutputStream(); DataOutputStream dao = new DataOutputStrea

6、m(bo); dao.writeUTF(t1.getString(); dao.writeInt(Integer.parseInt(t2.getString(); byte data=bo.toByteArray(); rs.addRecord(data, 0, data.length); catch (Exception e) System.out.println("存儲過程出現(xiàn)異常"); e.printStackTrace(); finally try rs.closeRecordStore(); catch (RecordStoreException ex) if(c

7、ommand.getLabel().equals("高分榜") try rs=RecordStore.openRecordStore("shiyan23", true); myFilter mf=new myFilter(); MyComparator mc=new MyComparator(); RecordEnumeration en=rs.enumerateRecords(mf,mc,true); Form f=new Form("游戲高分榜"); f.addCommand(new Command("返回",

8、 Command.BACK, 1); f.setCommandListener(new CommandListener() public void commandAction(Command command, Displayable displayable) dis.setCurrent(form); ); f.append("姓名 分數(shù)"); int i=0; while(en.hasNextElement()&&(i<5)/是否有下一條 byte dat=en.nextRecord();/得到下一條 ByteArrayInputStream bis

9、=new ByteArrayInputStream(dat); DataInputStream dis=new DataInputStream(bis); String getname=dis.readUTF();/讀取昵稱 int getscore=dis.readInt();/讀取分數(shù) f.append(getname+" "+getscore); i+; dis.setCurrent(f); catch (Exception e) System.out.println("讀取過程出現(xiàn)異常"); e.printStackTrace(); finall

10、y try rs.closeRecordStore(); catch (RecordStoreException ex) /自定義過濾器class myFilter implements RecordFilter public boolean matches(byte dat) ByteArrayInputStream bis=new ByteArrayInputStream(dat); DataInputStream dis=new DataInputStream(bis); try dis.readUTF();/獲取昵稱 int score=dis.readInt();/獲取分數(shù) if(s

11、core>=10000)return true; catch(Exception e ) return false; class MyComparator implements RecordComparator public int compare(byte rec1,byte rec2) int score1=0,score2=0; ByteArrayInputStream bis=new ByteArrayInputStream(rec1); DataInputStream dis=new DataInputStream(bis); try dis.readUTF();/獲取昵稱 s

12、core1=dis.readInt();/獲取分數(shù) catch(Exception e ) bis=new ByteArrayInputStream(rec2); dis=new DataInputStream(bis); try dis.readUTF();/獲取昵稱 score2=dis.readInt();/獲取分數(shù) catch(Exception e ) if(score1=score2) return RecordComparator.EQUIVALENT; /if if(score1>score2) return RecordComparator.PRECEDES; else

13、 return RecordComparator.FOLLOWS; /else package shiyan23;import javax.microedition.midlet.*;import javax.microedition.lcdui.*;/* * <p>Title: </p> * * <p>Description: </p> * * <p>Copyright: Copyright (c) 2009</p> * * <p>Company: </p> * * author not attributable */public class MIDlet1 extends MIDlet static MIDlet1 instance; Display dis=Display.getDisplay(this); Displayable1 displayable = new Displayable1(dis); public MIDlet1() instance = this; public void startApp() Disp