I use -[NSData writeToURL:options:error] to write data to files in a location
generally chosen by the user. That works fine.
The default location is ~/Desktop, if the user fails to choose anything, or if
the bookmark of the previously chosen location fails to resolve. However, when
I try to write the file I get an error 513, ‘you don’t have permission’,
underlying error 1, operation not permitted’. If the user chooses the Desktop
themselves using the Open panel, it works fine.
The ~/Desktop permissions seem to be OK - I have readwrite permission on that
folder.
So something is weird about the URL for ~/Desktop when I create it
programatically as opposed to what NSOpenPanel returns. Note this isn’t a
sandboxed app, so that shouldn’t come into it.
I create the default URL thusly:
NSURL* desktopURL = [[NSFileManager defaultManager]
URLForDirectory:NSDesktopDirectory inDomain:NSUserDomainMask
appropriateForURL:nil create:YES error:&error];
I can’t see any obvious difference between the URL here and the one I get from
NSOpenPanel, but there must be one.
Any ideas what the problem could be here?
—Graham
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