iOS - "unrecognised selector sent to instance" error, when name label

Question

I am sending some object, when pressing cell in my table to the other view, which have to show detail of that cell.

And when I try to change the label (on the second view) text, I get:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UITableViewCell nameOfItem]: unrecognized selector sent to instance 0x7f8e7ab5ed40'

My object:

@interface Item : NSObject

@property (strong,nonatomic) NSString * nameOfItem;
@property (strong,nonatomic) NSString * descriptionOfItem;
@property (strong,nonatomic) NSString * categoryOfItem;

-(instancetype)initItem:(NSString *)name category:(NSString *)category description:(NSString *)description;
-(NSComparisonResult)compare:(Item *)otherItem;

@end

My cell:

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    NSMutableArray* sortedItems = [[NSMutableArray alloc]initWithArray:[ItemsTable sortItems:self.itemsTable.items]];
    self.itemsTable.items = sortedItems;


    listOfItems = [NSArray arrayWithArray:self.itemsTable.items];
    UITableViewCell *cell;
    NSString *sectionTitle = [[self.itemsTable categoriesOfItemsTable] objectAtIndex:indexPath.section];

    cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    NSInteger index = [indexPath row];


    cell.textLabel.text = ((Item *)[[self.itemsTable listOfItemsInCategory:sectionTitle] objectAtIndex:index]).nameOfItem;


    return cell;

}

My row selecting:

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSString *category = [[self.itemsTable categoriesOfItemsTable] objectAtIndex:indexPath.section];//get category of selected item
    Item *testItem = [[self.itemsTable listOfItemsInCategory:category] objectAtIndex:indexPath.row];
    [self performSegueWithIdentifier:@"IntoInfoPage" sender:testItem];
}

My prepare for segue:

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{

    ...

    if ([segue.identifier isEqualToString:@"IntoInfoPage"]){
        if ([segue.destinationViewController isKindOfClass:[InfoViewController class]]){
            InfoViewController *fivc = (InfoViewController *)segue.destinationViewController;
            fivc.gotchaItem = sender;
        }
    }
}

and my second view:

@interface InfoViewController ()
@property (weak, nonatomic) IBOutlet UILabel *nameOfFullInfoItem;
@property (weak, nonatomic) IBOutlet UILabel *categoryOfFullInfoItem;
@property (weak, nonatomic) IBOutlet UITextView *descriptionOfFullInfoItem;

@end

@implementation InfoViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    if (self.gotchaItem)
    {
        self.nameOfFullInfoItem.text = [NSString stringWithFormat:@"Name: %@",self.gotchaItem.nameOfItem];
        self.categoryOfFullInfoItem.text = [NSString stringWithFormat:@"Category: %@",self.gotchaItem.categoryOfItem];
        self.descriptionOfFullInfoItem.text = [NSString stringWithFormat:@"%@",self.gotchaItem.descriptionOfItem];
    }

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

Exception appears at line, that is in my second view:

#import "InfoViewController.h"

@interface InfoViewController ()
@property (weak, nonatomic) IBOutlet UILabel *nameOfFullInfoItem; //Here!
@property (weak, nonatomic) IBOutlet UILabel *categoryOfFullInfoItem;
@property (weak, nonatomic) IBOutlet UITextView *descriptionOfFullInfoItem;

@end

Answer 1

At first I would agree with the other answers, but you are saying that your object is an Item, so it leads me to think of this answer:

Have you checked that this outlet @property (weak, nonatomic) IBOutlet UILabel *nameOfFullInfoItem; is properly connected to the UILabel? Go into your interface builder and verify that only this label is connected to this outlet and nothing else.

Answer 2

Your app is being crashed in following line

 self.nameOfFullInfoItem.text = [NSString stringWithFormat:@"Name: %@",self.gotchaItem.nameOfItem];

Here self.gotchaItem appears to be a UITableViewCell. Thats why you can't call nameOfItem from this object. Make sure that you are sending the correct item object and self.gotchaItem should be an object of Item class.

Answer 3

The error is telling you that you are calling nameOfItem method on a UITableViewCell. That alone would be enough, but you also have the stack trace, it shouldn't be difficult to track it down.

In your attached code, this is very suspicious:

cell.textLabel.text = ((Item *)[[self.itemsTable listOfItemsInCategory:sectionTitle] objectAtIndex:index]).nameOfItem;

Set a breakpoint on that line and make sure that it's a Item and not a UITableViewCell.