Question

I have the method below for filtering some results:
Currently it does this:
array: alpha, apple, aries, bravo

type a:

alpha
apple
aries

type l (now al)

alpha

I wanted to do this:

new search:
type p=
alPha
apple

below is the code

thank you kindly in advance

-(void) filterResults:(NSString *)searchText{
    NSMutableArray *test = [NSMutableArray arrayWithArray:self.listContent];

    [self.filteredListContent removeAllObjects]; // First clear the filtered array.
        for (int i=0; i<[test count]; i++) {
            NSString *stringResult = [test objectAtIndex:i];
            NSComparisonResult result = [stringResult compare:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];

            if (result == NSOrderedSame){
                [self.filteredListContent addObject:stringResult];

            }
        }
    [self.filteredListContent sortUsingSelector:@selector(localizedCaseInsensitiveCompare:)];//sort alphabetically
    NSLog(@"filtered results = %@",self.filteredListContent);
}

Answer 1

To find the letter anywhere in your string, replace this:

NSComparisonResult result = [stringResult compare:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];
if (result == NSOrderedSame){
    [self.filteredListContent addObject:stringResult];
}

with this:

NSRange range = [stringResult rangeOfString:searchText];
if (range.location != NSNotFound) {
    [self.filteredListContent addObject:stringResult];
}

Note that it will have to find all of the characters, in order.

If you want to find any of the characters, then use rangeOfCharacterFromSet:.