Good way to convert JSON to Array - actionscript-3

Question

i am trying to convert a json response to array in action script 3.
This is my JSON response:
[{
"id": 1,
"klistid": 8017,
"name": "List item name",
"description": "List item description",
"type": 1,
"offset": 300,
"req": "gfi"
},
{
"id": 2,
"klistid": 8018,
"name": "List item name",
"description": "List item description",
"type": 1,
"offset": 600,
"req": "gfi"
},
{
"id": 3,
"klistid": 8019,
"name": "List item name",
"description": "List item description",
"type": 1,
"offset": 900,
"req": "gfi"
}]
and this is my ac3 code:
function GetLists()
{
var req:URLRequest = new URLRequest("http://localhost:51318/api/List/1");
var ret:URLLoader = new URLLoader();
ret.addEventListener(Event.COMPLETE,function(e:Event)
{
var jsonData:Object = JSON.decode(ret.data);
for (var i:String in jsonData)
{
trace(i + ": " + jsonData[i]);
}
});
ret.load(req);
}
I assigned this function to a button but whenever i click that button nothing happens. I put traces in ac3 code when it enters the for loop code just stops and does nothing. I just want to convert this json string to an array or list to iterate through in it. I've already seen some posts about converting JSON strings to arrays but i have tried them all still nothing worked yet.
Thanks

Answer 1

There's a difference between your json data and the way to try to iterate on it.
Your data is an array with one element but you try to iterate on that one element like it should contain your objects id:1, 2, 3, etc ... Well of course it doesn't.
Instead remove the wrapper array from your json data or if you don't want to then:
var data:Object = jsonData[0];
for (var i:String in data)
{
trace(i)
}

Answer 2

All you have to do is cast your decoded data as an Array:
function GetLists()
{
var req:URLRequest = new URLRequest("http://localhost:51318/api/List/1");
var ret:URLLoader = new URLLoader();
ret.addEventListener(Event.COMPLETE,function(e:Event)
{
var jsonData:Array = JSON.decode(ret.data) as Array;
for each(var obj:Object in jsonData)
{
trace(obj["id"] + ": " + obj["description"]);
}
}
ret.load(req);
}