QSettings working on S60v5 while not working on S60v3 fp1 and fp2

[birch01]

Hello,

I have a simple program that uses QSettings to load and store some information. I use the following code to init it:

	settingsFilePath = QDesktopServices::storageLocation(QDesktopServices::DataLocation);
	settings = new QSettings(settingsFilePath + "/config", QSettings::IniFormat);

I use something like this to store settings:

        settings->beginGroup("Application Settings");
	if(ui.cbnumOfNewsItems->currentIndex() == 5)
		settings->setValue("NumOfNewsItemsShown", 9999);
	else
		settings->setValue("NumOfNewsItemsShown", ui.cbnumOfNewsItems->currentIndex()+1);
	settings->endGroup();

And something like this to load settings:

	settings->beginGroup("Application Settings");
	if(settings->value("NumOfNewsItemsShown").toInt() < 6)
		ui.cbnumOfNewsItems->setCurrentIndex(settings->value("NumOfNewsItemsShown").toInt()-1);
	else
		ui.cbnumOfNewsItems->setCurrentIndex(5);
	settings->endGroup();

Now, here's my problem. Code works well in emulator on S60v5, S60v3fp1 and S60v3fp2. But when I build it for phones, it only works on S60v5. On S60v3 the settings file is created I think, because once you save something, it's saved while application is runing. But after the app is restarted it behaves as if no data was ever stored and you need to enter it again. Same story after that, data is loaded until app is restarted.

Could someone tell me what could be causing problems?

[tineursic]

I have a similar problem (here)
Have you found a solution?

[tamhanna]

Folks, I am not afilated with Nokia in any way (4 years here and no Champion), because I talk openly. If you ask me, Qt is UNSUPPORTED on 4.6.3 - it will most likely never get another patch. There are GUI eekers, there are file eekers, etc.

What I can offer, however, if my own preference keeper class which works on Maemo, Symbian and Android. The header is:

/*
 * ApplicationPrefs.h
 *
 *  Created on: Dec 31, 2009
 *      Author: TAMHAN
 */

#ifndef APPLICATIONPREFS_H_
#define APPLICATIONPREFS_H_

#include <QtGui/QMainWindow>
 #include <QPainter>
 #include <QPixmap>
 #include <QBitmap>
#include <QDir>
#include <QString>
 #include <QFile>
 #include <QDateTime>

#define MSG_LEN 					50
#define NUM_OF_PLAYERS 8

typedef struct{
//Properties of 'arena'
qint16 downspeed;
qint16 lifeleft;
qint16 level;
//Next char prefs
quint16 ticksperchar;
qint16 tickstochar;
//Char supply
qint8 charsinchars;
char supply[255];
char charsonscreen;
char hitstroke;
//Statistical prefs
quint32 startedAtTic;//tics since last start or unpause
quint32 accumulatedTicks;//tics before paused
quint32 servedChars;
quint32 hitChars;
int players;
//Hint variables-a 0 means show again
//The values are exactly those returned
//from a FrmAlert call
int charselhint;
int mainhint;
int stathint;
int pausehint;
int pausedhint;
int unpausedhint;
}GameConsts;

typedef struct{
//Properties of each char
quint16 xpos[100];
quint16 ypos[100];
char sign[100];
bool paused;

//Game messages
char msg1[MSG_LEN];
quint32 msg1_framestolive;
char msg2[MSG_LEN];
quint32 msg2_framestolive;
}GameVars;

class ApplicationPrefs
	{
public:
	ApplicationPrefs();
	~ApplicationPrefs();

public:	
	void ApplicationPrefs::initPrefs();
	void ApplicationPrefs::savePrefs();
	bool playMusic;
	TInt volume;
	
	quint32 easygames;
	quint32 mediumgames;
	quint32 hardgames;
	quint32 secsplayed;
	quint32 chars_served[255];
	quint32 chars_hit[255];
	
	quint32 difficulty;
	quint32 useabc;
	quint32 useABC;
	quint32 use123;
	quint32 usespecial;
public:	
	//values for pausing
	GameConsts *consts;
	GameVars *vars;
	bool paused;
	
private:
	void ApplicationPrefs::defaultPrefs();
	};

#endif /* APPLICATIONPREFS_H_ */

And the source comes next

[tamhanna]

And the Source:

/*
 * ApplicationPrefs.cpp
 *
 *  Created on: Dec 31, 2009
 *      Author: TAMHAN
 */

#include "ApplicationPrefs.h"


ApplicationPrefs::ApplicationPrefs()
{
	// TODO Auto-generated constructor stub
	consts=(GameConsts*)malloc(sizeof(GameConsts));
	vars=(GameVars*)malloc(sizeof(GameVars));
}

ApplicationPrefs::~ApplicationPrefs()
{
	// TODO Auto-generated destructor stub
	savePrefs();
	free(consts);
	free(vars);
}

void ApplicationPrefs::initPrefs()
{
	QFile prefFile(QDir::currentPath() + "/prefs.tmgn");
	if(!prefFile.open(QIODevice::ReadOnly))
	{
		qDebug("FAIL");
		defaultPrefs();
		return;
	}
	QDataStream in(&prefFile);
	quint32 version;
	qDebug("LOAD");
	in >> version; // not needed for this v
	in >> ApplicationPrefs::playMusic;
	in >> ApplicationPrefs::volume;
	in >> ApplicationPrefs::easygames;
	in >> ApplicationPrefs::mediumgames;
	in >> ApplicationPrefs::hardgames;
	in >> ApplicationPrefs::secsplayed;
	in >> ApplicationPrefs::difficulty;
	in >> ApplicationPrefs::useabc;
	in >> ApplicationPrefs::useABC;
	in >> ApplicationPrefs::use123;
	in >> ApplicationPrefs::usespecial;
	in.readRawData((char*)ApplicationPrefs::chars_served,sizeof(quint32)*255);
	in.readRawData((char*)ApplicationPrefs::chars_hit,sizeof(quint32)*255);		
	in.readRawData((char*)this->consts,sizeof(GameConsts));
	in.readRawData((char*)this->vars,sizeof(GameVars));	
	prefFile.close();
}

void ApplicationPrefs::savePrefs()
{
	QFile prefFile(QDir::currentPath() +"/prefs.tmgn");
	qDebug("Write Go");
		if(!prefFile.open(QIODevice::WriteOnly))
		{
			qDebug("Write fail!");
			defaultPrefs();
			return;
		}
		QDataStream out(&prefFile);
		quint32 version=1;
		out << version; // not needed for this v
		out << ApplicationPrefs::playMusic;
		out << ApplicationPrefs::volume;
		out <<  ApplicationPrefs::easygames;
		out << ApplicationPrefs::mediumgames;
		out << ApplicationPrefs::hardgames;
		out << ApplicationPrefs::secsplayed;
		out << ApplicationPrefs::difficulty;
		out << ApplicationPrefs::useabc;
		out << ApplicationPrefs::useABC;
		out << ApplicationPrefs::use123;
		out << ApplicationPrefs::usespecial;
		out.writeRawData((char*)ApplicationPrefs::chars_served,sizeof(quint32)*255);
		out.writeRawData((char*)ApplicationPrefs::chars_hit,sizeof(quint32)*255);		
		out.writeRawData((char*)this->consts,sizeof(GameConsts));
		out.writeRawData((char*)this->vars,sizeof(GameVars));				
		prefFile.close();
}

void ApplicationPrefs::defaultPrefs()
{
	ApplicationPrefs::playMusic=true;
	ApplicationPrefs::volume=50;
	ApplicationPrefs::easygames=0;
	ApplicationPrefs::mediumgames=0;
	ApplicationPrefs::hardgames=0;
	ApplicationPrefs::secsplayed=0;
	ApplicationPrefs::difficulty=0;
	ApplicationPrefs::useabc=1;
	ApplicationPrefs::useABC=0;
	ApplicationPrefs::use123=0;
	ApplicationPrefs::usespecial=0;
}

[birch01]

I have a similar problem (here)
Have you found a solution?

No... I found out the solution tamhanna just reposted and implemented that because I was in a hurry. It's simple and it works.

[tamhanna]

My pleasure - call it another issue fixed the QaD way

[tineursic]

Just for the reference, my QSettings problem was also solved.

Next time I'll probably use tamhanna's solution.

Thank you.