Swift - How to loop through NSDictionary

Question

Hi I'm currently learning Swift, and I wanted to extract data from a JSON Api, My Swift code looks like this. To be specific, I need to extract each and every key and its value,(for example: print the value of title, cover etc..)

//Json request var error: NSError? var raw = NSString.stringWithString("http://example.com/MovieAPI/api/v1/movies/") var api_url = NSURL.URLWithString(raw) let jsonData: NSData = NSData.dataWithContentsOfURL(api_url, options: nil, error: &error) let result = NSJSONSerialization.JSONObjectWithData(jsonData, options: nil, error: &error) as NSDictionary for val in result {    for (var i=0; i < val.value.count; i++){        //println(val.value.valueAtIndex(3)) Not Working    } } 

and the structure of my JSON is

{   data: [       {         id: 2,         title: "Hunger Games",         cover: "http://example.com",         genre: 2        }   ] } 

Help!

Answer 1

Here is how you can process a given JSON:

let dataArray = result["data"] as NSArray;  print("Data items count: \(dataArray.count)")  for item in dataArray { // loop through data items     let obj = item as NSDictionary     for (key, value) in obj {         print("Property: \"\(key as String)\"")     } } 

Remarks:

Remember that you receive parsed objects as NSDictionary and when you iterate through the dictionary, order in which you receive properties may differ from the order in the original JSON.