I want to sort an array using NSSortDescriptor

Question

I am having a problem regarding sorting an array w.r.t database:

NSSortDescriptor *sorter = [[NSSortDescriptor alloc] initWithKey:@\"w\" ascending:YES];
NSAr         


        

Answer 1

I think this will do the trick for you. The docs for it are here: String Programming Guide

Add this little function written by Apple.

int finderSortWithLocale(id string1, id string2, void *locale)
{
    static NSStringCompareOptions comparisonOptions =
        NSCaseInsensitiveSearch | NSNumericSearch |
        NSWidthInsensitiveSearch | NSForcedOrderingSearch;

    NSRange string1Range = NSMakeRange(0, [string1 length]);

    return [string1 compare:string2
                    options:comparisonOptions
                    range:string1Range
                    locale:(NSLocale *)locale];
}

Make sure that you copy the function definition into your header, or you'll get a compile error on your sorted array.

For your sorted array, use this method:

[mGlossaryArray sortedArrayUsingFunction:finderSortWithLocale context:[NSLocale currentLocale]];

Your results will look like this:

• c
• cabin
• cafe
• Cancer
• Chinese
• Christianity
• Christmas
• Coke