CODEWITHSUNDEEP
objective-cxcodensstringnsarray
RockPaperScissors
RockPaperScissors

Reputation: 171

Having trouble taking an index of an array and making it an NSString

I get an array from a JSON and I parse it into an NSMutableArray (this part is correct and working). I now want to take that array and print the first object to a Label. Here is my code:

NSDictionary *title = [[dictionary objectForKey:@"title"] objectAtIndex:2];
arrayLabel          = [title objectForKey:@"label"];
NSLog(@"arrayLabel = %@", arrayLabel); // Returns correct 

//Here is where I need help

string = [arrayLabel objectAtIndex:1]; //I do not get the first label (App crashes)
NSLog(@"string = %@", string);

other things that I have already tried are as follows:

string = [NSString stringWithFormat:@"%@", [arrayImage objectAtIndex:1]];

and 

string = [[NSString alloc] initWithFormat:@"%@", [arrayImage objectAtIndex:1]];

Any help is greatly appriciated!

EDIT: The app does not return a single value and crashes.

Upvotes: 0

Views: 52

Answers (2)

Ken Thomases
Ken Thomases

Reputation: 90711

In addition to whatever else was going on, you repeatedly refer to "first" but use the index 1. In most C-based programming languages (and others, as well) the convention is that indexes into arrays are 0-based. So, use index 0 to get the first element.

Upvotes: 1

Jim Puls
Jim Puls

Reputation: 81142

Your code doesn't match the structure of your JSON. In your comment on the deleted answer, you said you got an exception when sending objectAtIndex: to an NSString. In your case, arrayLabel isn't an array when you think it is.

If your JSON has an object, your code needs to treat it as an NSDictionary. Likewise for arrays and NSArray and strings and NSString.

Upvotes: 1

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