Cannot delete key from QSettings on iOS
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Hello,
I am using Qt 5.1 compiled to run on iOS devices and I am using QSettings to save some info that I need my app to log.
I am saving strings under keys of the following type:
log/date/identifierAt some point I need to be able to get rid of these strings from QSettings. To do so I do the following:
@mSettings.beginGroup(LOG_TAG);
QStringList logKeys = mSettings.allKeys();
mSettings.endGroup();
qDebug() << "log (start-end)" << startTime << "-" << endTime;
for(int i = 0; i < logKeys.size(); i++) {
QDateTime time = QDateTime::fromString(logKeys[i].split("/")[0], "yyyy-MM-ddTHH:mm:ss:zzz");
if(time >= start && time <= end) {
qDebug() << "Delete " << (LOG_TAG + "/" + logKeys[i]);
mSettings.remove(LOG_TAG + "/" + logKeys[i]);
}
}@Here @LOG_TAG = "log"@
When that code runs here's what it prints out on the terminal:
@log (start-end) "2013-08-01T14:42:54:267" - "2013-08-01T14:44:40:999"
Delete "log/2013-08-01T14:42:54:267/ACCESSED"
Delete "log/2013-08-01T14:42:56:120/ACCESSED"
Delete "log/2013-08-01T14:42:57:826/ACCESSED"
Delete "log/2013-08-01T14:44:40:999/DEVICE"@Immediately after, If I try and print out all the items with keys starting with LOG_TAG it outputs:
@LOG: QMap(("2013-08-01T14:42:54:267/ACCESSED", "INFO:UserMenu")("2013-08-01T14:42:56:120/ACCESSED", "INFO:SignInMenu")("2013-08-01T14:42:57:826/ACCESSED", "INFO:WorldRanks"))@
As you can see it successfully deleted
@"log/2013-08-01T14:44:40:999/DEVICE"@but not the other keys.
Any idea why this might be happening?
Thanks,
Corneliu
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Hi,
Since you're using QSettings in an unusual way, did you call sync() to send the changes to permanent storage ?
Hope it helps
