Comments on: iPhone Tutorial – UISearchDisplayController with NSPredicate http://blog.mugunthkumar.com/coding/iphone-tutorial-uisearchdisplaycontroller-with-nspredicate/ iPhone, iPad, Windows Development and Usability Guidelines Fri, 30 Jul 2010 05:20:21 +0800 hourly 1 http://wordpress.org/?v=3.0.1 By: olof http://blog.mugunthkumar.com/coding/iphone-tutorial-uisearchdisplaycontroller-with-nspredicate/comment-page-1/#comment-1036 olof Thu, 18 Mar 2010 16:41:27 +0000 http://blog.mugunthkumar.com/?p=549#comment-1036 I dont understand the line: [product.productID compare:searchText options:NSCaseInsensitiveSearch]; What does that line do? I dont understand the line:

[product.productID compare:searchText options:NSCaseInsensitiveSearch];

What does that line do?

]]> By: Jonathan Saggau http://blog.mugunthkumar.com/coding/iphone-tutorial-uisearchdisplaycontroller-with-nspredicate/comment-page-1/#comment-940 Jonathan Saggau Sat, 13 Feb 2010 00:48:33 +0000 http://blog.mugunthkumar.com/?p=549#comment-940 There are a few little details that would make this better. Look at -[NSArray filteredArrayUsingPredicate:(NSPredicate *)predicate] and you won't need that loop. In any case, there is no need to make a new predicate identical to the last one each time through that loop. You should probably put it outside of the loop. I also suggest that you consider modifying the predicate you are filtering with, rather than filtering using the if([scope isEqualToString...] bits. For example: if([scope isEqualToString:@"Product ID"]) { predicate = [NSPredicate predicateWithFormat:@"(SELF.productID contains[cd] %@)", searchText]; } then the filtered array is just: [tableData filteredArrayUsingPredicate:predicate] so you won't need a loop. You can even drop an AND or an OR into your predicate or just use NSCompoundPredicate's various class methods to make your filter more dynamic. See Apple's Predicate Programming Guide for more details There are a few little details that would make this better.
Look at -[NSArray filteredArrayUsingPredicate:(NSPredicate *)predicate] and you won't need that loop. In any case, there is no need to make a new predicate identical to the last one each time through that loop. You should probably put it outside of the loop.

I also suggest that you consider modifying the predicate you are filtering with, rather than filtering using the if([scope isEqualToString...] bits. For example:

if([scope isEqualToString:@"Product ID"]) {
predicate = [NSPredicate predicateWithFormat:@"(SELF.productID contains[cd] %@)", searchText];
}

then the filtered array is just:

[tableData filteredArrayUsingPredicate:predicate]

so you won't need a loop.

You can even drop an AND or an OR into your predicate or just use NSCompoundPredicate's various class methods to make your filter more dynamic.

See Apple's Predicate Programming Guide for more details

]]> By: mugunthkumar http://blog.mugunthkumar.com/coding/iphone-tutorial-uisearchdisplaycontroller-with-nspredicate/comment-page-1/#comment-477 mugunthkumar Tue, 17 Nov 2009 09:25:38 +0000 http://blog.mugunthkumar.com/?p=549#comment-477 try it now... I'm sorry. try it now… I'm sorry.

]]> By: Ted http://blog.mugunthkumar.com/coding/iphone-tutorial-uisearchdisplaycontroller-with-nspredicate/comment-page-1/#comment-461 Ted Mon, 16 Nov 2009 14:24:54 +0000 http://blog.mugunthkumar.com/?p=549#comment-461 There are 8 ads in that short block of code :( There are 8 ads in that short block of code :(

]]>