[Solved, Moved] More memory needed?

[spode]

@

musica2::musica2(QWidget *parent) :
QWidget(parent)
{
listafilemusicali = this->searchMusics();
view = new QDeclarativeView(this);
view->rootContext()->setContextProperty("listaCanzoni", QVariant::fromValue(this->getSongTitle(listafilemusicali)));
view->setSource(QUrl::fromLocalFile("qml/Werfer/FliegendeLieder/musica2.qml"));
this->setAttribute(Qt::WA_LockLandscapeOrientation);

QObject *b = view->rootObject();
b->setProperty("lunghezza", QApplication::desktop()->geometry().width());
b->setProperty("altezza", QApplication::desktop()->geometry().height());

connect(b, SIGNAL(request_close()), this, SLOT(openPrima()));
connect(b, SIGNAL(request_plauseOrPlay()), this, SLOT(pauseOrPlay_media()));
connect(b, SIGNAL(request_changeMedia()), this, SLOT(changeMedia()));
connect(b, SIGNAL(request_hide()), this, SLOT(openWerfer()));

playlist = new QMediaPlaylist();
playlist->setPlaybackMode(QMediaPlaylist::Random);
for(int i = 0; i < listafilemusicali.length(); i++)
    playlist->addMedia(QUrl(listafilemusicali.at(i)));
mediaplayer = new QMediaPlayer();
mediaplayer->setPlaylist(playlist);
mediaplayer->play();

b->setProperty("titolo", mediaplayer->media().canonicalUrl().toString().section("/", -1).toLower().replace(".mp3", ""));

view->show();
this->showFullScreen();

}

QStringList musica2::searchMusics()
{
QStringList listaFileMusicali, listaFolders, listaGenerale;
listaFolders << "E:/Attachments"; //"C:/Users/7-Spode/Music";
register int j = 0;
QDir dir(listaFolders.at(j));
#ifdef Q_OS_SYMBIAN
listaGenerale = dir.entryList();
while (j < listaGenerale.length())
{
if(listaGenerale.at(j).contains(".mp3"))
listaFileMusicali.append("E:/Attachments/" + listaGenerale.at(j));
qDebug()<<listaFileMusicali.at(j);
j++;
}
return listaFileMusicali;
#endif
}
@

and the problem is:
@
Executable file: 49780 2012-01-14T17:16:41 C:\QtSDK\Symbian\SDKs\Symbian1Qt473\epoc32\release\gcce\udeb\Werfer.exe
Connecting to 'COM9'...
Connected.
Launching: Werfer.exe
Launched.
[Qt Message] "01 - An Deiner Seite (Radio Version) - Unheilig.mp3"
[Qt Message] "012-peter_fox_-alles_neu-ministry.mp3"
[Qt Message] "12-peter_fox-zucker(feat._vanessa_mason)-ysp.mp3"
[Qt Message] "153 andrea bocheli & laura pausini - vivo por ella.mp3"
[Qt Message] "21 guns.mp3"
[Qt Message] "21st Century Breakdown.mp3"
[Qt Message] ASSERT failure in QList<T>::at: "index out of range", file /QtSDK/Symbian/SDKs/Symbian1Qt473/include/QtCore/qlist.h, line 456
Thread has crashed: Thread 0x201 has panicked. Category: ASSERT failure i; Reason: 0
The device 'Nokia C5-03 USB Serial Port (COM9)' has been disconnected.
@

that is why i am thinking that my app needs more memory. is it right? how to fix it?

[andre]

No, it is probably just an off by one error in you accessing your QList.

[lgeyer]

@
while (j < listaGenerale.length())
{
if(listaGenerale.at(j).contains(".mp3"))
listaFileMusicali.append("E:/Attachments/" + listaGenerale.at(j));
qDebug()<<listaFileMusicali.at(j); // think about this line, especially when
// listaGenerale.at(j).contains(".mp3") is false
j++;
}
@

What makes you think that "index out of range" does indicate a insufficient memory problem, and not an out of range index?

[spode]

nothing:
@
listaGenerale = dir.entryList();
while (j < listaGenerale.length())
{
if(listaGenerale.at(j).contains(".mp3"))
{
listaFileMusicali.append(listaGenerale.at(j));
qDebug()<<listaFileMusicali.at(j);
}
j++;
}
@

@
Launched.
[Qt Message] "01 - An Deiner Seite (Radio Version) - Unheilig.mp3"
[Qt Message] "012-peter_fox_-alles_neu-ministry.mp3"
[Qt Message] "12-peter_fox-zucker(feat._vanessa_mason)-ysp.mp3"
[Qt Message] "153 andrea bocheli & laura pausini - vivo por ella.mp3"
[Qt Message] "21 guns.mp3"
[Qt Message] "21st Century Breakdown.mp3"
[Qt Message] ASSERT failure in QList<T>::at: "index out of range", file /QtSDK/Symbian/SDKs/Symbian1Qt473/include/QtCore/qlist.h, line 456
Thread has crashed: Thread 0x20c has panicked. Category: ASSERT failure i; Reason: 0
The device 'Nokia C5-03 USB Serial Port (COM9)' has been disconnected.
@

and in fact next file does not contain ".mp3"

[koahnig]

By all means it is not a good idea to use the same index j for different things. And that is what you are doing. If you have a list with 10 elements and you copy five of them into another list, how many elements will have you in the list?

This should work
@
listaGenerale = dir.entryList();
while (j < listaGenerale.length())
{
if(listaGenerale.at(j).contains(".mp3"))
{
listaFileMusicali.append(listaGenerale.at(j));
qDebug()<<listaGenerale.at(j);
}
j++;
}
@

[spode]

that is perfect! =) but do you know, you copied my code? =P

[koahnig]

Yes, I did copy your code from the post above my post. Hope it does not create a copyright issue :D

However, you might want to have a close look for the important modification I did.

[spode]

ahahah! =D

@

listaGenerale = dir.entryList();
while (j < listaGenerale.length())
{
if(listaGenerale.at(j).contains(".mp3"))
{
listaFileMusicali.append(listaGenerale.at(j));
qDebug()<<listaGenerale.at(j);
}
j++;
}
@
i hope it is right! ;)

EDIT: Damn, it is not right. it persists to throw the same error: [Qt Message] ASSERT failure in QList<T>::at: "index out of range", file /QtSDK/Symbian/SDKs/Symbian1Qt473/include/QtCore/qlist.h, line 456 (working on symbian)

[koahnig]

Hope you still have this statement as in your original post
@
register int j = 0;
@
respectively you might want to leave out the register statement and write
@
int j = 0;
@

[spode]

all right now. the problem was the increase of a variable!

[andre]

Best way to solve these issues: make sure that you know the relevant values. Just step through the procedure with your debugger, and watch what happens. Or, perhaps just insert a bunch of qDebug() statements to print out the values of everything you touch in that piece of code. I think it would have been very easy to track this issue this way.