Solved QFile open(QIODevice::WriteOnly) always giving false

[saitej]

Hi

I have code to write buffer to a new file. But it always return false. Can someone suggest the reason ?

QFile fileWrite();
 fileWrite.open(QIODevice::WriteOnly);
fileWrite.setFileName(imageDirectory + "/TAGGED/" + _imageList.at(i).fileName());
qDebug() << fileWrite.fileName(); // gives the correct file name

if (fileWrite.open(QIODevice::WriteOnly )){
//doesnot enter this loop
                    fileWrite.write(imageBuffer);
                    fileWrite.close();
                }
                else {

                     qDebug() << fileWrite.openMode(); //gives NOT OPEN
                    qDebug() << "Geotagging failed. Couldn't write to an image";
                    return;
                }

[m.sue]

Hi,
the usual suspects:

• the directory is write protected
• the directory does not exist
• the file name is illegal

-Michael.

[mrjj]

Hi
Did you check why it fails with
http://doc.qt.io/qt-5/qfiledevice.html#error
?

[SGaist]

Hi,

To add to my fellows, you start by opening a file without any name and then you try to open it again. That looks suspicious.

[saitej]

@mrjj

I am getting "The file could not be opened" error with error code 5 (QFileDevice::OpenError).

[mrjj]

@saitej
and does the "TAGGED" folder exists?

[saitej]

@mrjj

That was the mistake.
Thanks

[dheerendra]

Error code 5 generally means you don't permission to open the file . Please check permissions