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iOS Build a Simple iPhone App with Objective-C Creating a Data Model Creating a Data Collection

Ocky Wiemeijer
Ocky Wiemeijer
5,451 Points

retrieving string from Array and assigning it to an NSString

Hi Guys,

What am I doing wrong here (at line 10)? I need to get the string "eggs" from the NSArray shoppingList and put it in the NSString shoppingCart.

Note: adding self(dot) to shoppingList in line 10 does not work

ViewController.h
#import "UIViewController.h"

@interface ViewController : UIViewController

@property (strong, nonatomic) NSString *shoppingCart;
@property (strong, nonatomic) NSArray *shoppingList;

@end
#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Add your code below!
    self.shoppingList = [[NSArray alloc] initWithObjects:@"toothpaste", @"bread", @"eggs", nil];
    self.shoppingCart.text = [shoppingList objectAtIndex:2];
}

@end

1 Answer

Hi there,

You're very close - but there's no need to add .text to the variable:

    self.shoppingList = [[NSArray alloc] initWithObjects:@"toothpaste", @"bread", @"eggs", nil];
    self.shoppingCart = [self.shoppingList objectAtIndex: 2];

Hope that helps,

Steve.

Hi Steve,

Could you let me know why we took that ".text" away?

Hi Madhukar,

There.s no need for a .text. The variable, shoppingCart is declared as a String. A String object doesn't use a .text method to assign a string value to it. The array method objectAtIndex: returns the contents of the array at the specified element position. In this case, that returns a String which is assigned directly into the string variable that had already been declared.

I hope that makes sense!

Steve.