UISearchBar crashing when implementing text - ios

Question

I have an app with a tableview which you can add and delete items though when I tried to implement a search bar it crashes whenever I type one letter. Here is the code that I am using:
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if (searchText.length == 0) {
isFiltered = NO;
} else {
isFiltered = YES;
filteredPatients = [[NSMutableArray alloc] init];
for (Patient *patient in patients) {
NSRange patientNameRange = [patient.patientName rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (patientNameRange.location != NSNotFound) {
[filteredPatients addObject:patient];
}
}
}
[self.tableView reloadData];
}
This works fine though when you type a letter which has a patient in then it breaks at this line:
cell.textLabel.text = [filteredPatients objectAtIndex:indexPath.row];
Here is the code in context:
- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tv dequeueReusableCellWithIdentifier:#"cell"];
if ( nil == cell ) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"cell"];
}
NSLog(#"indexPath.row = %d, patients.count = %d", indexPath.row, patients.count);
Patient *thisPatient = [patients objectAtIndex:indexPath.row];
if (isFiltered == YES) {
cell.textLabel.text = [filteredPatients objectAtIndex:indexPath.row];
} else {
cell.textLabel.text = [NSString stringWithFormat:#"%# %#", thisPatient.patientName, thisPatient.patientSurname];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
cell.textLabel.textColor = [UIColor blackColor];
if (self.editing) {
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
}
return cell;
}
And returns this error
-[Patient isEqualToString:]: unrecognized selector sent to instance 0x756c180
If you want any more code then ask.
Thanks in advance

Answer 1

You are iterating on the collection patients that seems to contain Patient instances and not NSString instances. So I would do something like :
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if (searchText.length == 0) {
isFiltered = NO;
} else {
isFiltered = YES;
filteredPatients = [[NSMutableArray alloc] init];
for (Patient *patient in patients) {
NSRange patientNameRange = [patient.name rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (patientNameRange.location != NSNotFound) {
[filteredPatients addObject:patient];
}
}
}
[self.tableView reloadData];
}