Objective C custom array sorting algorithm error

Question

I am sorting an array of custom winery objects by a name attribute.

wineryNames = [NSMutableArray arrayWithArray:[wineryNames sortedArrayUsingComparator:^(Winery *a, Winery *b){
    return [a.getName compare:b.getName options:NSCaseInsensitiveSearch];
}]];

I am receiving an error on the return line and the log says 'unrecognized selector'. I have no idea why this isn't working.

Is wineryNames definitely an array containing Winery objects? And, what does the @interface declaration for the Winery class look like? Does it have a method or property called getName? — Mike Mertsock
– Mike Mertsock, Commented May 12, 2014 at 3:40
Thank you so much esker. It was an array containing NSString objects, not Winery objects. I don't know why I didn't see it, I guess it was just make my head hurt type code and I made a few other classes with code similar to what I posted. But thank you - it works now. — user3626968
– user3626968, Commented May 12, 2014 at 4:18

Community · Accepted Answer · 2017-05-23 12:27:13Z

2

I think this will do the job:

NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"name"
                                                                 ascending:YES
                                                                  selector:@selector(caseInsensitiveCompare:)];
NSArray *sortedArray = [wineryNames sortedArrayUsingDescriptors:@[sortDescriptor]];

More info Here!

edited May 23, 2017 at 12:27

CommunityBot

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answered May 12, 2014 at 3:52

Logan

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