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Re: NSArrayController and sorting
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Re: NSArrayController and sorting


  • Subject: Re: NSArrayController and sorting
  • From: Alex Clarke <email@hidden>
  • Date: Sat, 11 Jun 2005 19:15:39 +1000

Hi Jeff,

The way I do this:

Firstly autorelease instead of releasing the sort descriptors. Then they are available throughout the rest of my controller when I need them.

After that is simply a matter of setting an ivar

IBOutlet NSArrayController * booksController;

And connecting it in IB to the NSArrayController.

Then, anytime you add a new object,

[booksController rearrangeObjects];

will do the trick.

Cheers

Alex


Alex Clarke email@hidden http://www.cocoalab.com


On 11/06/2005, at 12:33 PM, Jeff LaMarche wrote:

I'm using Cocoa Bindings to control a table in an app, and I want the table sorted. I added this method to my application delegate;

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
NSSortDescriptor* sort = [[NSSortDescriptor alloc] initWithKey:@"title" ascending:YES];
[books setSortDescriptors:[NSArray arrayWithObject: sort]];
[sort release];


}

which sorts the data. When data changes, however, the interface doesn't maintain the sort order. I know this is probably a dumb question, but what's the most efficient way to handle this? I know i could create an IBAction that re-sorts the array controller and link to it from any field that could conceivably affect the sort order, but my gut tells me that's too inelegant to be the right solution.

I had assumed that once you set a sort descriptor for an array controller, that it would keep everything sorted by that, but it appears I'm wrong. Any thoughts or help is much appreciated.

Thanks,
Jeff

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References: 
 >NSArrayController and sorting (From: Jeff LaMarche <email@hidden>)

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