[Solved] Comparing QString and QByteArray

[srikanth.koorma]

Hello everyone, I have a problem comparing Qstring and Qbytearray data, Can anyone help me with this please.!!

@
QStringList str_id;

QByteArray readData;

if (readData.contains(str_id[i].toUtf8())) //This is the part of code where my error exists.

@
Error:
no matching function for call to 'QByteArray::contains(QString&)'

[dheerendra]

What is 'i' there in str_id[i].toUtf8() ? Just try with this. Based on this you can fix the issue.

@ QStringList list;
list<< "1 "<<"2";
QByteArray data;
data.contains(list[1].toUtf8());@

[srikanth.koorma]

Sorry Dheerendra this is my actual line

@if(readData.contains(str_id.at(i)))@

Below are the values present in Qtstringlist
str_id.at(1) = 2103
str_id.at(2) = 2204
str_id.at(3) = 2296
str_id.at(4) = 7485
str_id.at(5) = 9375

and readData is a QByteArray which consists of one of the following at a time
@"ID : 2013 Heart Beat : 72 Movement : yes"
"ID : 2048 Heart Beat : 75 Movement : yes"
"ID : 2169 Heart Beat : 73 Movement : yes"
"ID : 2204 Heart Beat : 72 Movement : yes"@

So I have to compare the qstringlist element each at a time with the Qbytearray data, i have written for loop for doing this hence 'i' variable is used like below,
@
for(i=0;i<n;i++)
{
if(readData.contains(str_id.at(i)))
{
//Do Some Operation
}
else
//Do Some Operation
}@

and n is the Qstringlist size which is calculated through size function i.e "str_id.size()"

Can you help me out with the compare function please.!!

The following is the actual scenario which I have to do with this code,
@readData = "ID : 2013 Heart Beat : 72 Movement : yes"
str_id.at(1) = 2013@
comparing these qbytearray and qstring data the above mentioned if condition should return true.

[dheerendra]

Not sure why are converting data to QByteArray. I remember you are reading data from file and making it ByteArray. I feel which converting to ByteArray is not required.

You can try something like this.

@ QByteArray readData = "ID : 2013 Heart Beat : 72 Movement : yes";
qDebug() << readData.data() << " He ="<<readData;
QByteArray dat = "2013";
QString data1= "2013";
if (dat.contains(data1.toUtf8())){
qDebug() << "What man "<<endl;
}else {
qDebug() << "No man"<<endl;
}@

[srikanth.koorma]

Thanks for your simple sample code Dheerendra. It worked and I modified my project code with it. Thanks a lot once again. :)

[dheerendra]

You can put this question to SOLVED state.