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

Paul Stearns
Paul Stearns
16,212 Points
Posted by Paul Stearns
Paul Stearns
16,212 Points

error message unclear

Feel like my answer is correct. Do not know what error might be.

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];

    // Add your code below!
    NSArray *shoppingList = [[NSArray alloc] initWithObjects:@"toothpaste", @"bread", @"eggs", nil];
}

@end

1 Answer

kasaltrix
kasaltrix
9,491 Points
kasaltrix
kasaltrix
9,491 Points

Hi Paul,

The problem with your code is that you are declaring the shoppingList variable twice. You can simply access the shoppingList property that you declared in your interface file by using the keyword "self" rather than declaring it twice which is the cause of error.

#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

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

@end
Paul Stearns
Paul Stearns
16,212 Points
Paul Stearns
Paul Stearns
16,212 Points

Thanks for the explanation.