How to get an array of JSON objects from NSData object

Question

So I'm using an HTTP GET method which returns an array of JSON objects, which are stored in NSData. The array looks like this:

[{"created_at":"2013-03-09T04:55:21Z","data_type":"image","id":5354,"latitude":37.785834,"longitude":-122.406417,"name":"tempObject","privacy":"public","radius":1000.0,"updated_at":"2013-03-09T04:55:21Z","user_id":101},{"created_at":"2013-03-10T20:57:08Z","data_type":"image","id":5364,"latitude":37.785834,"longitude":-122.406417,"name":"tempObject","privacy":"public","radius":1000.0,"updated_at":"2013-03-10T20:57:08Z","user_id":101}]

How would I go about extracting these JSON objects and iterate through them from the NSData?

Did you try searching "ios json nsdata"? It seems to turn up any number of already-answered questions on that exact topic... — Bill Patterson, Mar 14 '13 at 06:15
http://stackoverflow.com/questions/15180036/putting-json-into-an-array/15181743#15181743 — LE SANG, Mar 14 '13 at 06:15
The "This question already has an answer here" did not give me the adequate answer. I need some practical answer like the answer on this page. This question is not a duplicate from the one on the top. — Chen Li Yong, Jun 08 '16 at 02:12

score 77 · Accepted Answer · edited Mar 27 '19 at 10:07

77

If you're using iOS 5.0 and up, you can do this:

Objective-C:

NSError *error = nil;
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:myNSData options:kNilOptions error:&error];

if (error != nil) {
    NSLog(@"Error parsing JSON.");
}
else {
    NSLog(@"Array: %@", jsonArray);
}

Swift:

do {
    let jsonArray = try JSONSerialization.jsonObject(with: myNSData, options:[])
    print("Array: \(jsonArray)")
}
catch {
    print("Error: \(error)")
}

edited Mar 27 '19 at 10:07

Yash Jadhav

95
1
14

answered Mar 14 '13 at 06:18

Simon Germain

6,834
1
27
42

1

Was missing something. Fixed! Sorry about that. – Simon Germain Mar 14 '13 at 06:30

How to get an array of JSON objects from NSData object

1 Answers1