UITableView reordering core data results

my UITableView is reordering the results after you navigate away and them come back to the view. it only does it one tim开发者_开发百科e though - if you navigate away and then come back a second time the new order doesn't change.

does anyone know what could be causing this?

thanks for any help.

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i fixed this issue by putting this code in my viewWillAppear: method.

if (self.resultsController != nil) {
   return;
}

I'm not sure why it worked. I noticed that it was missing when i compared it to other code I had.