Problem with UISearchBar and NSMutableArray - iphone

Question

I have a tableview with a search bar. I want to search my whole core data database.
I loaded everything into an array here:
NSEntityDescription *entityDescription = [NSEntityDescription entityForName:#"Entity" inManagedObjectContext:managedObjectContext];
NSFetchRequest *request = [[[NSFetchRequest alloc] init] autorelease];
[request setEntity:entityDescription];
NSError *error = nil;
NSArray *array = [managedObjectContext executeFetchRequest:request error:&error];
self.myArray = array;
I'm then searching using this method but getting an error:
- (void) searchTableView {
NSString *searchText = searchBar.text;
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in myArray)
{
NSString *value = [dictionary objectForKey:#"name"];
[searchArray addObject:value];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (titleResultsRange.length > 0)
[copyListOfItems addObject:sTemp];
}
[searchArray release];
searchArray = nil;
}
But when I search, I get the crash here:
MedicalCode *code = [self.copyListOfItems objectAtIndex:indexPath.row];
cell.codeLabel.text = code.description;
Error:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[ICD9Disease objectForKey:]: unrecognized selector sent to instance 0x1be6e0'

Answer 1

You are getting the error because you are asking for an object, but you're trying to set a string, in the line:
NSString *value = [dictionary objectForKey:#"name"];
Since you're getting a string, not an object, what you need to use is valueForKey:
NSString *value = [dictionary valueForKey:#"name"];

Answer 2

It looks like you're expecting the fetch request to return dictionaries, but it's actually returning instances of the class ICD9Disease.