N90 - sever crash issue

[dittostudios]

having trouble with a nokia n90.

i have two games which are very similar.

problem is when twisting the screen(to camera mode) one application will crash the phone (pull the battery is the only way to resolve) and the other will continue to work as normal.

Both games continue to work fine when any other interupt is performed.

The crash occurs when twisting the phone screen back. The screen will just be a blank.

firmware is v 3.0535.4.3

anyone any ideas what could cause such a crash?

Cheers
RC

[hartti]

Are you accessing / trying to access camera on either of those applications?

[balagopalks]

Could you please mention which games you have tried / more details of the applications that you have tried ? Or if you could send me the apps may be I could try to reproduce it here..

Regards
Gopal

[dittostudios]

I'm not trying to access the camera at any stage in either game.

The crashing occurs at in stage in one game. I would be surprised if it was a memory issue becuase the smaller of the two games is the one that crashes

i'm sorry to be so indescript but i can't release too much information about the games.

Non-working game
The hidenotify seems to work because when the screen is twisted the camera works 100%. when the screen is turned back the phone will instantly cease. It won't even make key tone sounds.


Canvas class extends microedition canvas
Sound - was using nokia sound, but it was removed and now has no sound.

run loops looks like

public void run(){
done = false;
while(!notdone)
{
if(!paused)
{
updateGame();
updateScreenBuffer();
}
if(!paused){
repaint();
serviceRepaints();
}
if(Interrupted){
Interrupted = false;
if(game != null)
game.intterupted();
resetKeyboard();
}
if(Finished)
done = true;

performWait();
}
perfomCloseDown();
}


/* SHOW NOTIFY */

protected void showNotify()
{
paused = false;
}
/* HIDE NOTIFY */
protected void hideNotify()
{
if(audio != null)
audio.stop();
paused = true;
Interrupted = true;
}



Working Class
Canvas class extends full canvas ( i did try full canvas on the non working calss with no success).
Sound is javax.

the run method is the same execpt for :-
if(!paused)
{
updateGame():
updateBuffer();
if(!pause){
repaint();
serviceRepaints();
}
}


/* SHOW NOTIFY */
protected void showNotfiy()
{
paused = false;
setRedraw(); //method states to the game that certain elements need to be redrawn (other game will always redraw all)
}

protected void HideNotify()
{
if(!paused)
{
paused = true;
interupted = true;
}
stopSound();
}


Cheers for any help

RC

[AdyW_RP]

I've noticed this issue too, including on games that have been java verified and released. Did you ever find a resolution?
AdyW.

[dittostudios]

Still having the issue on games we are working on now. Tried everything i could think of without much success.

[AdyW_RP]

and the usual silence from nokia
The only game I've found that behaves correctly is the preinstalled snakes, which I'm not sure is j2me.

[Nokia Ron]

and the usual silence from nokia
The only game I've found that behaves correctly is the preinstalled snakes, which I'm not sure is j2me.

Actually someone from Nokia did respond earlier

Please understand that this is neither end user support nor developer's technical support. The Forum Nokia discussion board is a place for users to help others. There seems to be both a developer's question as well as a end user question here. So here is a long winded response.

If you are looking for product support for applications or hardware you should go to Nokia's online support sites http://www.nokia.com/support not here in Forum Nokia. Or for a discussion board there is one localized one in the UK http://discussions.nokia.co.uk/discussions/ they may be able to help.

If you are looking for developer support for Games you might want to post this in the Mobile Java > Games topic. instead of the General area. Still we moderate and try to help when we can using our Forum Experts but mainly we hope that support is provided by Forum Champions and your peers. Our technical support is available in other areas of Forum Nokia.

[RobJSmith]

Does this mean that nokia are aware of the problem?

Do you know how to fix it, or what causes it?

Any work around knowledge would be helpful.

Is it a firmware issue which has been resolved on later phones?

[AdyW_RP]

My mistake, I didn't notice the "forum nokia expert" replies the tags are easy to overlook not like the sigs on the Hybrid forum.
This is purely a developers problem as far as I can see, although I thought that general was the correct place as it's labeled "Discussion about general issues in J2ME/MIDP application development for Java-enabled devices".
This might not be just a game issue it could in theory occur in any J2ME/MIDP application, it just so happens that we are games developers.

[siva_guduru]

Hello,
i am sorry that i cannot help u with ur question but i want a help from u as i am using N70 and i am not able to close the connection http/stream.

when i am trying to download and if i want to cancel the download once it starts i am not able to do it.

can u pls suugest me the way to do it.

thaking you,
siva_guduru.

[AdyW_RP]

Hi Siva, it might help if you asked this in a new thread rather than posting into a non-related issue.
Regards,
Ade

[dittostudios]

I have found a way to "fix" the issue.

I flooded the code with

while(AppPaused);
{
try{
Thread.sleep(10L);
}catch(Exception e){}
}

I don't believe this is a full fix but it seems to reduce the problem significantly