Parsing JSON in swift 2.0 - json

Question

I'm trying to parse JSON data from a server api.
The json :
[
{"interest": {
"title":"Sport",
"sub":[
"painting",
"photography",
"museum"]
}
},
{"interest": {
"title": "music",
"sub": [
"rock",
"classic",
"techno"]
}
}]
The code to get it from a file just to test to parse it :
do{
let path = NSBundle.mainBundle().pathForResource("MainInterest", ofType: "json")
let jsonData = NSData(contentsOfFile: path!)
let jsonResult:NSArray! = try NSJSONSerialization.JSONObjectWithData(jsonData! , options: NSJSONReadingOptions.MutableContainers) as! NSArray
} catch let error as NSError {
print(error)
}
I can access the whole file with :
print(jsonResult)
But I can't access more than one level, here is the first level :
if let a = jsonResult {
print(a[0]["interest"])
}
I can then get my first object from my file, but I would like to access jsonResult[0]["interest"]["title"] (==Sport) or jsonResult[0]["interest"]["sub"][2] (== photography) but I have this kind of error build failed:
Cannot subscript a value of type 'AnyObject?!' with an index of type 'String'
Cannot subscript a value of type 'AnyObject?!' with an index of type 'Int'
Could you please help me ? I'm really stuck and the apple doc is not so explicite on this point I think. And I don't want to use framework like swiftyJson etc.
Thanks a lot !
Ben
EDIT :
Solved with (thanks #maxpovver) :
//To Get Title
let title = (((self.interests as NSArray)[0] as? NSDictionary)?["interest"] as? NSDictionary)?["title"] as? NSString
print(title)
//To Get Sub
let sub = ((((self.interests as NSArray)[0] as? NSDictionary)?["interest"] as? NSDictionary)?["sub"] as! NSArray)[1] as! NSString

Answer 1

The answer
//To Get Title
let title = (((self.interests as Array)[0] as? Dictionary)?["interest"] as? Dictionary)?["title"] as? String
print(title)
//To Get Sub
let sub = ((((self.interests as Array)[0] as? Dictionary)?["interest"] as? Dictionary)?["sub"] as! Array)[1] as! String
Also can be made more readable:
let firstInterest = ((self.interests as Array)[0] as? Dictionary)?["interest"] as? Dictionary)?
let title = firstInterest?["title"] as? String
let sub = (firstInterest?["sub"] as! Array)[1] as! String
You'll never be ablo to simplify that without some extra libraries as swift does not support dynamic types.