Question

I am trying to build my first iOS app that parses json from a web service.

In my .h file i create an array

NSArray *items;

In my .m file i call the website and store the data into the array. This all goes fine except eventually I am trying to display the data in a uitableview.

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

    static NSString *CellIdentifier = @"ItemsCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    NSLog(@"%@",items);

    NSDictionary *item = [items objectAtIndex:indexPath.row];
    NSString *title = [item objectForKey:@"title"];

    cell.title.text = title;

    return cell;
}

The nslog of items produces:

{
category = code;
keyword = "";
limit = 20;
lowPrice = "";
page = 0;
products =     (
    {
        description = "...";
        mobileFriendly = 1;
        popularity = 2021;
        productId = code;
        title = "title";
    }, and so on...
)

I am getting an error trying to do NSDictionary *item = [items objectAtIndex:indexPath.row]; It says doing objectAtIndex:indexPath.row is invalid.

What am I doing wrong?

Thanks for your help!

Answer 1

The value stored in items is an instance of NSDictionary, but you’re sending it an NSArray message. Also, the code you posted is referring to gift and ignoring the item anyway.

The array you’re looking for is actually stored under the key products inside the items dictionary, so you need to do something like this:

NSArray *products = [items objectForKey:@"products"];

NSDictionary *product = [products objectAtIndex:indexPath.row];
// Then use the product, instead of using 'gift' (whatever that is).
NSString *title = [product objectForKey:@"title"];