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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",
    "payload": {
            “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 class Payload
  {
    public string text;
       public string image;
 }

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

The output is getting displayed in a single line

{"id":1,"payload":{"text":"wwwwwww","image":"hello"}}

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

Can anybody please help me out?

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1 Answer 1

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3
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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 class Payload
{
    public string imageUrl;
    public string text;
}

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

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 class Payload
{
    public string imageUrl;
    public string text;
}

[Serializable]
public class Data
{
    public int id;
    public Payload payload;
    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);
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  • \$\begingroup\$ 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 \$\endgroup\$ Commented Sep 27, 2016 at 4:03
  • \$\begingroup\$ @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 \$\endgroup\$ Commented Sep 27, 2016 at 6:16
  • \$\begingroup\$ @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 \$\endgroup\$ Commented Sep 27, 2016 at 6:51
  • \$\begingroup\$ @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"! \$\endgroup\$ Commented Sep 27, 2016 at 8:05
  • \$\begingroup\$ @user1509674 : Hey, I edited my answer, just take a look. \$\endgroup\$ Commented Sep 27, 2016 at 8:15

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