第一步：添加以下两个函数：
void loadSetting()
  {
    RecordStore rs=null;
    try
    {
      //打开纪录
      bHide=true;
      rs=RecordStore.openRecordStore(strRec,true);
      if(rs.getNumRecords() <= 0)
      {
        this.saveSetting();
      }
      else
      {

 

          byte data[] = rs.getRecord(1);
          if (data == null)return;
          ByteArrayInputStream baos = new
              ByteArrayInputStream(data, 0, data.length);
          DataInputStream dos = new DataInputStream(baos);
          try {
            bSound = dos.readBoolean();
            nSetID = dos.readByte();
            nContextID = dos.readByte();

 

          }
          catch (Exception e) {}

 

        }

 

      }catch(Exception e)
      {
        e.printStackTrace();
      }
      return ;

 

  }

 

  int nSetID = 1;//记录设置用的序号
  int nContextID = -1;//记录内容用的序号
  boolean saveSetting()
{
    boolean bOK=false;
    RecordStore rs=null;
    //打开纪录
    ByteArrayOutputStream baos=new ByteArrayOutputStream();
    DataOutputStream dos=new DataOutputStream(baos);
    try
        {
          //写入数据信息
          try{
              dos.writeBoolean(bSound);
              dos.write(nSetID);
              dos.write(nContextID);
              }catch(Exception e){
              dos.close();
              }
            dos.close();
            //写入到纪录
            byte[] data=baos.toByteArray();
            rs=RecordStore.openRecordStore(strRec,true);
            int a= rs.getNumRecords();
          //  int b = rs.getSizeAvailable();
         //   rs.getSizeAvailable();

 

            if(a <= 0)
            {
              nSetID = rs.addRecord(data, 0, data.length);

 

            }
            else
            {
              rs.setRecord(nSetID, data, 0, data.length);
            }
            rs.closeRecordStore();

 

            bOK=true;
            }catch(Exception e)
            {
            }

 

       return bOK;

 

}

 

第二步：在Games的构造函数中调用loadSetting,在quitGame()中调用saveSetting();
第三步：把saveGame()
{
 try
 {
 ...
 }catch()
 {}
 ...
         dos.close();
         //写入到纪录
         byte[] data=baos.toByteArray();
         rs=RecordStore.openRecordStore(strRec,true);
         rs.addRecord(data,0,data.length);
         rs.closeRecordStore();
}修改为
{
 try
 {
 ...
 }catch()
 {}
 ...
         dos.close();
         //写入到纪录
         byte[] data=baos.toByteArray();
         rs=RecordStore.openRecordStore(strRec,true);
         if(nContextID < 0)
           nContextID = rs.addRecord(data,0,data.length);
         else
           rs.setRecord(nContextID, data, 0, data.length);

         rs.closeRecordStore();

}
第四步：把loadGame()中
{
 ...
 for(int i=1;i<rs.getNextRecordID();i++)
       {
         //查询所有的纪录
         if(rs.getRecordSize(i)<=0) continue;
         //读取数据
         byte data[]=rs.getRecord(i);
         if(data==null) continue;
         ByteArrayInputStream baos=new
                                   ByteArrayInputStream(data,0,data.length);
         DataInputStream dos=new DataInputStream(baos);
 try
 {
 ...
 }
}修改为
{
 ...
 if(nContextID < 0)return false;
 byte data[]=rs.getRecord(nContextID);
         if(data==null) return false;
         ByteArrayInputStream baos=new
                                   ByteArrayInputStream(data,0,data.length);
         DataInputStream dos=new DataInputStream(baos);
 try
 {
 ...
 }
}
第五步:将原saveGame和loadGame中有关bSound的部分去掉。

 

 

曹珺