Thanks very much for your advice.
After receiving your email I set the filetype in the object's init method:
[self setFileType:FILEEXTENSION_QUICKLOOK]; //#define
FILEEXTENSION_QUICKLOOK @"CAQuickLook"
However, saving the file as before, still does not append a file extension.
On the call to:
[self saveDocumentWithDelegate:self
didSaveSelector:@selector(didSaveDocument:didSave:contextInfo:)
contextInfo:nil];
...I get this message from XCode:
2011-09-03 15:15:01.954 CATab[12618:903] -[NSDocumentController
fileExtensionsFromType:] is deprecated, and does not work when passed a uniform
type identifier (UTI). If the application didn't invoke it directly then the
problem is probably that some other NSDocument or NSDocumentController method
is getting confused by a UTI that's not actually declared anywhere. Maybe it
should be declared in the UTExportedTypeDeclarations section of this app's
Info.plist but is not. The alleged UTI in question is "CAQuickLook".
I went to the XCode App Properties panel and added an Exported UTI with file
extension of "CAQuickLook". However, saving the document, still does not append
a file extension to the file name.
What am I missing?
On Sep 3, 2011, at 2:12 PM, Lee Ann Rucker wrote:
> Have you set [NSDocument fileType]?
> You can get the extension from [NSString pathExtension]
>
>
> ----- Original Message -----
> From: "Vik Rubenfeld" <v...@mindspring.com>
> To: cocoa-dev@lists.apple.com
> Sent: Saturday, September 3, 2011 12:33:13 PM
> Subject: Best Practices for Associating a File Extension With a File in
> XCode 4?
>
> I see that NSDocument has lots of great support for saving files, including:
>
> [self saveDocumentWithDelegate:self
> didSaveSelector:@selector(didSaveDocument:didSave:contextInfo:)
> contextInfo:nil];
>
> NSDocument supports several methods for providing info on the document to be
> saved, including:
>
> - (NSURL *)fileURL //document's location
> - (NSData *)dataOfType: (NSString *)type error:(NSError **)error
> //document's data
> ...etc.
>
> But I don't yet see a method that returns the file extension for the file.
>
> Going to the app project settings, I filled in a document type as shown in
> this image:
>
> http://tinyurl.com/3v6hezq
>
> As shown in the image, I filled in a file extension for documents of the
> document type, "QuickLookOutputDocument," which is one of my app's objects, a
> subclass of NSDocument. I thought that perhaps this file extension would be
> used when the document was saved. However, although the data of the document
> is saved correctly, using:
>
> [self saveDocumentWithDelegate:self
> didSaveSelector:@selector(didSaveDocument:didSave:contextInfo:)
> contextInfo:nil];
>
> ...no file extension was used.
>
> What am I missing?
>
> Thanks very much in advance to all for any
> info._______________________________________________
>
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