QStringList to QByteArray??

[Peppy]

Is there aby way how to pass QStringList to QByteArray? And then back, from QByteArray to QStringList?

[yshurik]

What about serialization like?:

QByteArray ba;
QDataStream ds(&ba);
ds << my_stringlist;

QByteArray ba;
QDataStream ds(&ba);
ds >> my_stringlist;

[Peppy]

May be.

// edit: or:
@
QByteArray tmp;
for(int i = 0; i < args.count(); i++) {
tmp.append(args.at(i).toAscii());
tmp.append(",");
}
@

[tobias.hunger]

Did you read the documentation? There are quite some ways to get a QByteArray from a QString and a QString from a QByteArray listed in the documentation of QString.

Which one you want to use depends on which encoding you want/have in your QByteArray.

[DenisKormalev]

Tobias, he is asking not about conversion, but more about (de)serialization (QStringList <> QByteArray, not QString <> QByteArray) :) . Previous answers are quite full I think

[Garza]

Im facing problems by creating a QByteArray: I want to go from this QStringList: ("0a", "7e", "ff", "f7", "ba", "97", "63", "ba", "80", "02", "40", "00", "00", "00", "00", "2d", "00", "00", "00", "00")
to a QByteArray. I have gone through the documentation but I dont get the expected result for example for the above string I get :
"\x00,\x00,\x00,\x00,\x00,a,?,\x00,P,\x02,(,\x00,\x00,\x00,\x00,\x00,\x00,\x00,\x00,\x00,"

I tried the examples given on this thread to obtain the above result.
Do you know what Im doing wrong? Thanks

[KroMignon]

@Garza said in QStringList to QByteArray??:

Do you know what Im doing wrong? Thanks

It looks like you QStringList constains hexadeximal value as string.
Why do you have create a QStringList and not a QString?

Hexadecimal strings can be converted to QByteArray as follow: QByteArray b = QByteArray::fromHex(hexString.toLatin1());

In your case, you have to convert first your QStringList to QString:

QString hexString = stringList.join("");
QByteArray b = QByteArray::fromHex(hexString.toLatin1());

[J.Hilk]

@Garza would be nice if you showed us, what exactly you tried so far

here is one, probably inefficient way:

QStringList sl {"0a", "7e", "ff", "f7", "ba", "97", "63", "ba", "80", "02", "40", "00", "00", "00", "00", "2d", "00", "00", "00", "00"};

    QByteArray ba;
    ba.reserve(sl.size());
    for(const QString &s : qAsConst(sl)){
        ba.append(s.toUShort(nullptr,16));
    }

    qDebug() << ba << endl << ba.toHex(' ');

[Garza]

@KroMignon Thanks, I tried this solution and when using qDebug() I get:
list:
("0a", "7e", "ff", "f7", "ba", "97", "63", "ba", "80", "02", "40", "00", "00", "00", "00", "2d", "00", "00", "00", "00")
result of qDebug()<<b:
"\n~\xFF\xF7\xBA\x97""c\xBA\x80\x02@\x00\x00\x00\x00-\x00\x00\x00\x00"
is the representation of qDebug incorrect or why I dont see the same bytes as in the list?
Im parsing a CAN data recording and the payload is in hex values. In order the use the QCANBus library I want to define a Qbytearray as payload for a CAN frame I define for each line of CAN recording.

[KroMignon]

@Garza said in QStringList to QByteArray??:

result of qDebug()<<b:

You shoud try: qDebug() << QString(b.toHex());

[VRonin]

This post is deleted!

[Garza]

@KroMignon Thanks