[SOLVED] QSettings, accesing arrays when you don't know their name..

[Leon]

So i am making a wallpaper changer, and i want everytime a wallpaper changes, a qstring (of the the datetime + and te path of the image) to be saved. So i did something like this everytime a wallpaper changes:

@QDateTime date_now = QDateTime::currentDateTime();
QSettings history_settings("wallch", "History");
int size = history_settings.beginReadArray(QString::number(date_now.date().year())+"/"+QDate::longMonthName(date_now.date().month())+"/"+QString::number(date_now.date().day()));
history_settings.endArray();
history_settings.beginWriteArray(QString::number(date_now.date().year())+"/"+QDate::longMonthName(date_now.date().month())+"/"+QString::number(date_now.date().day()));
history_settings.setArrayIndex(size);
history_settings.setValue(date_now.toString("dd")+QString::number(date_now.date().dayOfWeek()), date_now.toString("hh")+":"+date_now.toString("mm") +" | "+qimage);
history_settings.endArray();@

which works like a charm if u see regedit:
!http://i.imgur.com/2QGoQAl.png(img)!

The question is, how do i access this qstrings after? I don't know the array name... Is there another way i should go with on the saving procedure instead? begin group seems a bettery way, but setValue seems a little wrong since i just want to save a QString..

[mcosta]

Hi,

I don't like your solution so much.

I sugget you to use groups with variable names (because you can call QSettings::childGroups() to retreive all group names) and array with fixed name inside.

WRITE
@
QSettings settings;

settings.beginGroup("History");
for (int i = 0; i < 5; ++i) {
    settings.beginGroup(QString("group_%1").arg(i + 1));
    settings.beginWriteArray("images", 10);
    for (int j = 0; j < 10; ++j) {
        settings.setArrayIndex(j);
        settings.setValue("date", QString("DATE_%1:%2").arg(i).arg(j));
        settings.setValue("path", QString("PATH_%1:%2").arg(i).arg(j));
    }
    settings.endArray();
    settings.endGroup();
}
settings.endGroup();

@

READ
@
QSettings settings;
settings.beginGroup("History");
QStringList groups = settings.childGroups();
Q_FOREACH (QString group, groups) {
settings.beginGroup(group);
int imageSize = settings.beginReadArray("images");
for (int i = 0; i < imageSize; ++i) {
settings.setArrayIndex(i);
qDebug (qPrintable (settings.value("date").toString()));
qDebug (qPrintable (settings.value("path").toString()));
}
settings.endArray();
settings.endGroup();
}
settings.endGroup();
@

[Leon]

Late answer but yeah :D
Thanks! groups solved my hand

WRITE

@QDateTime date_now = QDateTime::currentDateTime();
QSettings history_settings("wallch", "History");
history_settings.beginGroup(QString::number(date_now.date().year()));
history_settings.beginGroup(QString::number(date_now.date().month()));
int size = history_settings.beginReadArray(date_now.toString("dd"));
history_settings.endArray();
history_settings.beginWriteArray(date_now.toString("dd"));
history_settings.setArrayIndex(size);
history_settings.setValue("time", date_now.toString("hh:mm"));
history_settings.setValue("path", image);
history_settings.setValue("type", type);
history_settings.endArray();
history_settings.endGroup();
history_settings.endGroup();@

READ
@QSettings history_settings("wallch", "History");
QStringList years = history_settings.childGroups();
Q_FOREACH (QString year, years) {
history_settings.beginGroup(year);
QStringList months = history_settings.childGroups();
Q_FOREACH (QString month, months) {
//add top level item, eg. December (2013)
QTreeWidgetItem *month_year_item = new QTreeWidgetItem;
month_year_item->setText(0, QDate::longMonthName(month.toInt())+" ("+year+")");
month_year_item->setData(0,12, year);
month_year_item->setData(1,12, month);
ui->treeWidget->addTopLevelItem(month_year_item);

        history_settings.beginGroup(month);
        QStringList days = history_settings.childGroups();
        int index=0;
        Q_FOREACH (QString day, days) {
            //add day of month child (1-31)
            QTreeWidgetItem *day_item = new QTreeWidgetItem;
            if(day.toInt()<10)
                day_item->setText(0, day.right(1));
            else
                day_item->setText(0, day);
            ui->treeWidget->topLevelItem(ui->treeWidget->topLevelItemCount()-1)->insertChild(index, day_item);

            index++;
            history_settings.endArray();
        }
        history_settings.endGroup();
    }
    history_settings.endGroup();
}@