Re: Stuck with NSSortDescriptor

• Subject: Re: Stuck with NSSortDescriptor
• From: Micha Fuhrmann <email@hidden>
• Date: Fri, 4 May 2007 20:22:28 +0200
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Greg,

thanks for pointing me, it was indeed the Array issue.

Thanks again.

Micha
On 2 mai 07, at 19:50, Greg Titus wrote:

Hi Micha,

You don't give us the code where you add the sort descriptor to the array controller, but from the looks of things, are you maybe calling [arrayController setSortDescriptors:alphaSortDescriptor] (i.e. setting just the descriptor itself, instead of an array of descriptors)?

The code should look something like [arrayController setSortDescriptors:[NSArray arrayWithObject:alphaSortDescriptor]];.

I only ask because the exception that you are getting looks like something is trying to treat an NSSortDescriptor as if it were an NSArray.

Hope this helps,
	- Greg

On May 2, 2007, at 9:44 AM, Micha Fuhrmann wrote:

Hi there,

I've got an NSArrayController pointing to NSSortDescriptor in a custom class using the Model Key Path in the IN Bindings.

Here's the sort descriptor:

alphaSortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"artist" ascending:YES selector:@selector (caseInsensitiveCompare:)];


The same NSArrayController has its Model Key Path's contentArray set as:

@distinctUnionOfObjects.artist

and is working fine without  the descriptor.

However as soon as I link the NSSortDescriptor I get the following error message:

[NSSortDescriptor count]: selector not recognized [self = 0x396fd0]
An uncaught exception was raised
[NSSortDescriptor count]: selector not recognized [self = 0x396fd0]
Uncaught exception: <NSInvalidArgumentException> *** - [NSSortDescriptor count]: selector not recognized [self = 0x396fd0]

Any help greatly appreciated.

Micha
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