Question

I’m having a problem saving some data to file. The following line returns a NO:

[self.fileManager createFileAtPath:fileString contents:photoData attributes:nil];

The error code is 3 and the error message is “No such process.” The fileString variable points to a filename (e.g., “file://localhost/var/mobile/Applications/… /Library/Caches/photos/2-86290”) and photoData is an NSData variable (though a mouseover during debugging tells me it’s actually an NSConcreteData variable).

Thanks for reading! Any ideas on this would be terrific.

Answer 1

If fileString begins with file:// then this isn’t a path, it is a URL string for a file URL.

If you started with an NSURL object and obtained fileString as follows:

fileString = [someURL absoluteString];

then change it to:

fileString = [someURL path];

Now fileString will have a valid file path that you can pass to the createFileAtPath: method.

Another option, if you want to write the NSData object photoData, is to do:

[photoData writeToURL:someURL atomically:YES];