RMS problem

Java on Mobile Devices J2ME
#1

After I installed an application to my phone, and the application contains a RMS. When I run this application, it can save my highest score.
However, after I closed my application, all data (record) will be lost.
Does it is possible to make a permanent database in the application?
Thanks a lot!
My RMS to open a database is:
public static RecordStore openRSAnyway (String rsname)
{

RecordStore rs = null;

if(rsname.length()>32)
return null;
try {
rs = RecordStore.openRecordStore(rsname, true);
return rs;
} catch (Exception e)
{
return null;
}
}

public static RecordStore openRSExisted(String rsname)
{
RecordStore rs = null;
if (rsname.length()>32)
return null;
try {
rs = RecordStore.openRecordStore(rsname, false);
return rs;
} catch (Exception e)
{
return null;
}
}

public static int writeInt2RS(RecordStore rs, int data)
{
byte []tmp = new byte[4];
tmp[0] = (byte)(0xff&(data>>24));
tmp[1] = (byte)(0xff&(data>>16));
tmp[2] = (byte)(0xff&(data>>8));
tmp[3] = (byte)(0xff&(data>>0));
try
{
return rs.addRecord(tmp, 0, tmp.length);
} catch(Exception e)
{
}
return -1;
}

#2

you are calling closeRecordStore(), arn’t you?

If you don’t, its upto the implementation to decide whether to actually save your data, or to simply discard it.

#3

I called closeRecordStore() already:
public class GameScreen extends Canvas {
…
rs = RMSUtil.openRSAnyway(dbname);
…
public void paint() {
…
rs = RMSUtil.openRSExisted(dbname);
if (rs==null)
{
g.setColor(255, 255, 255);
g.drawString("Your Score "+String.valueOf(spriteScore), 0, 20, Graphics.TOP|Graphics.LEFT);
}
else {
try {
if (spriteScore>=RMSUtil.readInt4RS(rs, r1)) {
r1 = spriteScore;
r1 = RMSUtil.writeInt2RS(rs, spriteScore);
g.setColor(255, 255, 255);
g.drawString(“Highest Score” +String.valueOf(RMSUtil.readInt4RS(rs, r1)), 0, 40, Graphics.TOP|Graphics.LEFT);
rs.closeRecordStore();
}
else
{
g.setColor(255, 255, 255);
g.drawString("Highest Score " +String.valueOf(RMSUtil.readInt4RS(rs, r1)), 0, 40, Graphics.TOP|Graphics.LEFT);
rs.closeRecordStore();
}
} catch (Exception e) {}
}
…
}
…
…
}

But it doesnt work, did I have another thing go wrong?
Thanks for your reply

#4

The number of calls to open and close must both match.

Your example above appears to open it twice, and close it only once.

#5

I tried to close the record store.
But it also saves the record during the game is running, and the record will lost after I close the application.
???
Thanks for your reply