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

Posted by kumarsaurabhsinha
kumarsaurabhsinha
3,428 Points

Please help me with this

I want to assign a value at index 2 of an NSArray to a NSString variable 'shoppingCart' The property shoppingCart is already declared in the ViewController.h file

ViewController.h 
#import "UIViewController.h"

@interface ViewController : UIViewController

@property (strong, nonatomic) NSString *shoppingCart;

@property (strong, nonatomic) NSArray *shoppingList;

@end
ViewController.m 
#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

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

@end

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

HI there,

I think you need an additional self in there! 

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

There was a similar query yesterday on this thread.

Hope that fixes it for you!

Steve.

kumarsaurabhsinha
kumarsaurabhsinha
3,428 Points

Thank you Steve

kumarsaurabhsinha
kumarsaurabhsinha
3,428 Points
kumarsaurabhsinha
kumarsaurabhsinha
3,428 Points

I got the answer, thank you for looking at it:

self.shoppingCart = [self.shoppingList objectAtIndex:2];