-[__NSArrayI length]: crash when trying to filter with searchController

Question

I'm trying to filter with searchController. I am getting a crash (-[__NSArrayI length]: unrecognized selector sent to instance) at line NSRange productNameRange = NSMakeRange(0, [[_list valueForKey:@"name"] length]); in the following code:

-(void)updateFilteredContent:(NSString*)searchText {
    // Update the filtered array based on the search text and scope.
    [self.searchResults removeAllObjects];
    // Filter the array using NSPredicate
    NSLog(@"_categories are %@",_categories);
    for (NSDictionary *object in _categories) {
        NSUInteger searchOptions = NSCaseInsensitiveSearch | NSDiacriticInsensitiveSearch;
        NSRange productNameRange = NSMakeRange(0, [[_list valueForKey:@"name"] length]);
        NSRange foundRange = [[_list valueForKey:@"name"] rangeOfString:searchText options:searchOptions range:productNameRange];
        if (foundRange.length > 0) {
            [self.searchResults addObject:object];
        }
    }
}

I've tried adding an if statement on the length like if ([[object valueForKey:@"name"] length] >0){ but it still crashing.

an example of the log for _list is:

_list names are (
    "Honda",
    "Ford",
    Toyota,

valueForKey: returns array... [[_list valueForKey:@"name"][0] length ]; try like this.. — TamilKing, Jan 21 '15 at 04:27
if([_list valueForKey:@"name"].count == 0) return; put this line before the above line — TamilKing, Jan 21 '15 at 04:28
that was it TamilKing, adding [0] at the end fixed it. Thanks! — user3411663, Jan 21 '15 at 06:35

score 0 · Answer 1 · answered Jan 21 '15 at 04:34

0

your [_list valueForKey:@"name"] returns an NSarray, which should be an NSString to calculate length of it..

answered Jan 21 '15 at 04:34

Tejvansh

676
4
9

score 0 · Answer 2 · answered Jan 21 '15 at 06:12

0

Please check with this condition and let me know if it still crashes!

if([_list allkeys] contains @"name"])
{
  NSString *tempStr = [_list valueForKey:@"name"];
}
if(tempStr)

NSRange productNameRange = NSMakeRange(0, [tempStr length]);

answered Jan 21 '15 at 06:12

Nishant Sharma

51
2

-[__NSArrayI length]: crash when trying to filter with searchController

2 Answers2