find a letter anywhere in an array of strings ios - ios

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:.

Answer 2

Try this one.
NSPredicate *predicate = [NSPredicate predicateWithFormat:[NSString stringWithFormat:#"SELF beginswith '%#'", searchText]];
self.filteredListContent = [self.listContent filteredArrayUsingPredicate:predicate];
Hope this helps you.