Question

im pretty new to xcode, so sorry if these are basics but im having the next issue: i have a class Data that contains string friendID and string friendName.
then i also have an array dataArray of these classes. now how do i access an ID or Name inside the array of classes?

this doesnt seem to work and i cant find any other solution:

[[dataArray objectAtIndex:i] valueForKey:@"friendID"]

and if its relevant, i made dataArray like this and it works:

if(friendDataEmpty==YES)
{
    NSMutableArray *tmpFriendID = [data valueForKey:@"id"]; // parsed data
    NSMutableArray *tmpFriendName = [data valueForKey:@"name"]; // parsed data

    for(int i=0;i<[tmpFriendID count];i++)
    {
        Data *data = [[Data alloc]init];
        data.friendID = [tmpFriendID objectAtIndex:i];
        data.friendName = [tmpFriendName objectAtIndex:i];
        [dataArray addObject:data];
        [data release];
    }
}

and thats the header of data

@interface data : NSObject {
NSString *friendID;
NSString *friendName;
}

@property (nonatomic, copy) NSString *friendID;
@property (nonatomic, copy) NSString *friendName;

Answer 1

Try it like this.

data *dat = (data *)[dataArray objectAtIndex:i];
NSString *friendID = data.firnedID;

// to set the value
data.firnedID = someValue;

Side Note: You should consider following the proper naming convention while you name your classes, methods, vars and other things. The “data” class should have been named “Data“.