How can I pull the 2D array out of this JSON file?

Question

I would like to know how to pull the 2D array out of the below JSON file. I am using Unity and would ideally like to use Newtonsoft.Json

{ "height":8,
 "infinite":false,
 "layers":[
        {
         "data":[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
         "height":8,
         "name":"Tile Layer 1",
         "opacity":1,
         "type":"tilelayer",
         "visible":true,
         "width":8,
         "x":0,
         "y":0
        }],
 "nextobjectid":1,
 "orientation":"orthogonal",
 "renderorder":"right-down",
 "tiledversion":"1.1.2",
 "tileheight":64,
}

This is not a duplicate question as it deals with the unique case of having a nested array within the JSON file, and in particular I would like to use Newtonsoft.JSON.

Answer 1

If you want to use Newtonsoft (and pretty much any other JSON library), you'll just need to create a class to hold the deserialized object:

public class Layer
{
    public IEnumerable<int> Data {get;set;}
    public int Height {get;set;}
    // ... implement other properties
}

public class MyObject
{
    public int Height {get;set;}
    public bool Infinite {get;set;}
    public IEnumerable<Layer> Layers {get;set;}
    // ... implement other properties
}

Then deserialize the string into your object:

using Newtonsoft.Json.JsonConvert;
....
var myObject = DeserializeObject<MyObject>(jsonString);
foreach (var layer in myObject.Layers)
{
    // do something with each layer, e.g. get the sum of the data
    var sum = layer.data.Sum();
}

Answer 2

If Unity supports dynamic keyword which comes with c# 4, then you can just assign it directly with

dynamic obj = JsonConvert.DeserializeObject(jsonData);

You will then access it directly: obj.layers.data

If the included mono framework doesn't support dynamic keyword, what you can do is create a model of the data which is a simple class with all the attributes and assign it in a similar fashion.

YourModel obj = JsonConvert.DeserializeObject<YourModel>(jsonData);