Download and launch of pdf

Hey guys,.

So, I come across a situation where I need to download and launch a pdf in my application. I've already implemented lance using an Adobe pdf file call (and it works very well) but every time it will open the pdf file, I get an error "the document cannot be opened because it is corrupt or damaged. It seems therefore that my download process and saving the file pdf is wrong.

To download the pdf, I have simply make a request to the url and save the data returned in a file. Clearly, I don't have a good understanding on what do I do to download/save a pdf file. Here is how I currently save the pdf:

QByteArray pdfData = reply->readAll();

        QString url = reply->url().toString();

        QStringList urlSplit = url.split(".");
        QString fileType = urlSplit.at(urlSplit.length()-1);

        QByteArray bytes;
        bytes.append(url);

        QString fileName = QString(QCryptographicHash::hash(bytes, QCryptographicHash::Md5).toHex()) + "." + fileType;

        QString fileTargetUrl = QDir::currentPath() + "/data/downloads/" + fileName;

        QFile textFile(fileTargetUrl);
        textFile.open(QIODevice::WriteOnly | QIODevice::Unbuffered);

        QTextStream textOut(&textFile);

        textOut << pdfData;

        textOut.flush();
        textFile.close();

Is there something wrong with the way I do things? If so, what can I change to correctly download the pdf?

Thanks for any possible help,

-Jeff

OK, so I found the problem. First convert it the reply-> readAll() in a QByteArray caused an error with the data of the pdf (bribery of encoding of pdf files). If the answer is directly inserted in the data file are not getting corrupted.

Here is the code works:

QString url = reply->url().toString();

QStringList urlSplit = url.split(".");
QString fileType = urlSplit.at(urlSplit.length()-1);

QByteArray bytes;
bytes.append(url);

QString fileName = QString(QCryptographicHash::hash(bytes, QCryptographicHash::Md5).toHex()) + "." + fileType;

QString fileTargetUrl = QDir::currentPath() + "/data/downloads/" + fileName;

QFile textFile(fileTargetUrl);
textFile.open(QIODevice::WriteOnly | QIODevice::Unbuffered);

textFile.write(reply->readAll());
textFile.flush();
textFile.close();

-Jeff

Tags: BlackBerry Developers

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