# Communicate Unity application via a series of Json

I am working on communicating unity application via a series of Json. Since I am new to JSON, I don't have any idea how that work with Wnity.

Here is my JSON structure

{
"id": “id",
“image”: "Image Url”
"text":"text message"
"option" : {
"option1":"1" ,
"option2": "2"
}
}


}

Now I have created a button in Unity scene. I have hardcoded the image and text data. When I click on the button the data should get converted into Json and should send JSON data to the server and print a data log message.

I have used this code.Iam getting the output

using UnityEngine;
using System.Collections;
using LitJson;
using System.IO;
public class JsonScript : MonoBehaviour {
JsonData json;
void Start()
{
Data data = new Data();
data.id = 1;
data.payload = new Payload() { text = "wwwwwww", image = "hello" };
//json = JsonMapper.ToJson(data) ;
string json = JsonUtility.ToJson(data);
P (json);
//      P(json + "\t\n");

}

// Use this for initialization
void P(string aText)
{
print (aText +"\n");
}


}

  [System.Serializable]
{
public string text;
public string image;
}

[System.Serializable]
public class Data
{
public int id;
}


The output is getting displayed in a single line

But I need the output to be printed as the Json format.I tried giving space.

https://docs.unity3d.com/Manual/JSONSerialization.html
The documentation has very detailed explaination. In your case the classes/structures (that store data ) should look like:

[Serializable]
{
public string imageUrl;
public string text;
}

[Serializable]
public class Data
{
public int id;
}


Mark them with Serializable attribute so that they can be serialized.
To serialize it , you do:

Data data = new Data();
data.id = <any id>;
data.payload = new Payload() { imageUrl = <any url>, text = <any text> };

string json = JsonUtility.ToJson(data);


And to convert the json string back into data you do:

var data = JsonUtility.FromJson<Data >(json);


That's it, hope this helps.

Edit 01: Pretty format JSON
(in the same documentation as above )

Controlling the output of ToJson()

ToJson supports pretty-printing the JSON output. It is off by default but you can turn it on by passing true as the second parameter.

So i guess all you need to do is just :

string json = JsonUtility.ToJson(data,true);


Honestly, I havent tried it yet but I do believe in what the documentation says :D

Edit02 :

[Serializable]
public class Option
{
public int option01;
public int option02;
}
[Serializable]
{
public string imageUrl;
public string text;
}

[Serializable]
public class Data
{
public int id;
public Option option;
}

Data data = new Data();
data.id = <any id>;
data.payload = new Payload() { imageUrl = <any url>, text = <any text> };
data.option= new Option() { option01 = 1, option02 = 2 };

string json = JsonUtility.ToJson(data,true);

• Thanks a lot for your help. Its working fine. I have a dout the output is getting displayed as {"id":1,"payload":{"text":"wwwwwww","image":"hello"}} in a single line .how can I display the message as the json structure as mentioned in the question Sep 27 '16 at 4:03
• @user1509674 I think what you are looking for is printing a "beautified" version of the JSON, cf. stackoverflow.com/questions/6178544/how-can-i-beautify-a-json Sep 27 '16 at 6:16
• @Shautieh : I went through the link you provided,but Newtonsoft.Json is a paid library right.Is there any other library.Here I have used LitJson and SimpleJSON Sep 27 '16 at 6:51
• @user1509674 The second answer seems good enough: markdavidrogers.com/… . Otherwise I'm not using one so I can't recommend any, but there should be plenty just googling "c# json beautifier"! Sep 27 '16 at 8:05
• @user1509674 : Hey, I edited my answer, just take a look.
– tc07
Sep 27 '16 at 8:15