how to parse array of objects using json for iphone

Question

I have a problem parsing the array of objects from the JSON result.

[
    {
        \"first_name\":\"vijay\",
        \"last_name\":\"last\",
        \"credi         


        

Answer 1

Google "JSON Framework". Follow the (easy) instructions to install it.

Then go:

//let's say there's NSString *jsonString.

NSArray *userData = [jsonString JSONValue];

NSMutableArray *creditCards = [NSMutableArray array];
for (NSDictionary *user in userData) {
    [creditCards addObject:[user objectForKey:@"creditCardNumber"]];
}

You'll drop out the bottom of that with NSMutableArray *creditCards full of NSString objects containing the credit card numbers.

Answer 2

@Dan Ray answer is correct, but if you want to avoid third-party librairies you can use NSJSONSerialization:

Assuming that NSData *responseData is containing your JSON.

NSArray *userData = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:nil];

NSMutableArray *creditCards = [NSMutableArray array];
for (NSDictionary *user in userData) {
    [creditCards addObject:[user objectForKey:@"creditCardNumber"]];
}

Source: NSJSONSerialization.