Terminating App due to'NSInvalidArgumentException' - ios

Question

I am trying to search my array contents from the TableView,The Cells Have Detail View also.When i run my app in stimulator it runs but when i insert objects dynamically and try to search them app crashes with 'NSInvalidArgumentException'.
reason:
'Can't use in/contains operator with collection <customcells: 0x8ea3b40> (not a collection)'.
My code which has Predicates is
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
self.searchedarray = nil;
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [cd] %#", self.searchtext.text];
self.searchedarray =[NSMutableArray arrayWithArray :[contactsarray filteredArrayUsingPredicate:predicate]];
}
and also
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {
[searchedarray removeAllObjects];
// Filter the array using NSPredicate
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"self.name CONTAINS[c] %#", searchText];
searchedarray = [NSMutableArray arrayWithArray:[contactsarray filteredArrayUsingPredicate:predicate]];
}
Help me, I am stuck with this Predicate error ;Using Like instead of contains also doesn't help.
Edited content
- (void)viewDidLoad
{
contactsarray = [[NSMutableArray alloc] init];
self.searchedarray = [NSMutableArray arrayWithCapacity:[contactsarray count]];
[super viewDidLoad];
self.navigationItem.rightBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
target:self
action:#selector(insertNewObject:)];
self.navigationItem.rightBarButtonItem = addButton;
}
- (void)insertNewObject:(id)sender
{
customcells *new = [[customcells alloc] init];
new.name = #"Enter Name";
new.contacts=#" Enter Contact Number";
new.organisation=#"Enter Organisation Name";
[contactsarray insertObject:new atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView insertRowsAtIndexPaths:#[indexPath]
withRowAnimation:UITableViewRowAnimationAutomatic];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{// Return the number of rows in the section.
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [searchedarray count];
} else {
return [contactsarray count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"cell";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
customcells *myarray= [contactsarray objectAtIndex:indexPath.row];
cell.textLabel.text = myarray.name;
cell.textLabel.text = [NSString stringWithFormat:#"%#",
myarray.name];
if(cell==nil)
{
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
if (tableView == self.searchDisplayController.searchResultsTableView)
{
customcells *newarray = [searchedarray objectAtIndex:indexPath.row];
cell.textLabel.text =newarray.name;
} else {
customcells *myarray= [contactsarray objectAtIndex:indexPath.row];
cell.textLabel.text = myarray.name;
cell.textLabel.text = [NSString stringWithFormat:#"%#",
myarray.name]; }
}
return cell;
}
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
NSMutableArray *tempContent = [self.contactsarray mutableCopy];
[tempContent removeObject:[tempContent objectAtIndex:indexPath.row]];
self.contactsarray = tempContent;
[tableView deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
} else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
self.searchedarray = nil;
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [cd] %#", self.searchtext.text];
self.searchedarray =[NSMutableArray arrayWithArray :[contactsarray filteredArrayUsingPredicate:predicate]];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"showDetail"])
{
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
customcells *new = contactsarray[indexPath.row];
[[segue destinationViewController] setDetailItem:new];
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
}
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {
[searchedarray removeAllObjects];
// Filter the array using NSPredicate
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"self.name CONTAINS[c] %#", searchText];
searchedarray = [NSMutableArray arrayWithArray:[contactsarray filteredArrayUsingPredicate:predicate]];
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
// Tells the table data source to reload when text changes
[self filterContentForSearchText:searchString scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
// Tells the table data source to reload when scope bar selection changes
[self filterContentForSearchText:self.searchDisplayController.searchBar.text scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
#end

Answer 1

Your code is using 'contains' in the NSPredicate, which assumes that each element in your array can be matched using 'contains'. You have an array of customcells, which will not by default have any way of dealing with a contains matcher.
In your second example, using self.name CONTAINS[c] %#, you end up matching on the name property which is a string, so I would expect this to work (though I've not tried it). The first example you give is trying to match on the customcells object directly, so I'd suggest also using self.name in that case as well.