Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

(objective C) Can't figure out this simple array problem

I tried a ton of different things and it just won't work, i've tried just alloc and init, addObject, etc.

Heres what i did:

#import "UIViewController.h"

@interface ViewController : UIViewController

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

#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self = [[NSArray alloc]initWithObjects: @"toothpaste",@"bread",@"eggs",nil];


1 Answer

Felix Ayala
Felix Ayala
5,541 Points

Hi Martin,

You're close. self refers to the actual object that you are using, in this case, UIViewController. So, you need to specify the property you need to access. It should look like this:

// shoppingList is a property of your ViewController (self)
self.shoppingList = [[NSArray alloc]initWithObjects: @"toothpaste",@"bread",@"eggs",nil];