How to convert the list containing different datatypes into a single string?

I have list containing float ,int and string values.How to convert all those values into a single string.

Code (CSharp):

1.  
2.    List<HandleValues> SaveValues = new List<HandleValues>();
3.    SaveValues.Add(new HandleValues(id,modname,Positionx,Positiony,Positionz,Rotationw,Rotationx,Rotationy,Rotationz));
4.  
5. //How to get all those values inside the SaveValues list as a single string so that I can convert it into JSON
6. string Alldetails=  SaveValues.(???????)
7.  
8.  
9.  
10. //DataHandler Class
11.  
12. using System.Collections;
13. using System.Collections.Generic;
14. [System.Serializable]
15. public class HandleValues
16. {
17.      public int Id  { set; get; }
18.      public string Modelname { set; get; }
19.      public float Posx { set; get; }
20.      public float Posy { set; get; }
21.      public float Posz { set; get; }
22.      public float Rotw { set; get; }
23.      public float Rotx { set; get; }
24.      public float Roty { set; get; }
25.      public float Rotz { set; get; }
26.      public HandleValues(int id,string modelname,float posx,float posy,float posz,float rotw,float rotx,float roty,float rotz)
27.      {
28.          this.Id = id;
29.          this.Modelname = modelname;
30.          this.Posx = posx;
31.          this.Posy = posy;
32.          this.Posz = posz;
33.          this.Rotw = rotw;
34.          this.Rotx = rotx;
35.          this.Roty = roty;
36.          this.Rotz = rotz;
37.      }
38. }

 

You can use Unity built-in JSON serialization, no need to do it manually.

 

For that I need to convert all the contents in the list to a string ...Right??

 

No, wrong. It will convert objects (including lists) to strings and vice versa for you.

 

But it won't work with properties, you'll need to create serialized backing fields for the properties.

 

Of course it won't. Property is just a shortcut for a pair of methods, getter and setter. It is not possible to serialize "method value" because there's no such thing as method value. Only fields have values.

 

You and I know that, but the OP may very well not, so I thought it best to mention it and save some possible confusion, as his class contains lots of properties.

 

ok if I removed that...the properties....but how to add all the contents of List into Json.

Code (CSharp):

1. string Jsonstring = JsonUtility.ToJson(SaveValues);

this is not working while the below code is working

Code (CSharp):

1. string Jsonstring = JsonUtility.ToJson(SaveValues[0]);

 

JsonUtility doesn't support top level arrays, use this helper class http://www.boxheadproductions.com.au/deserializing-top-level-arrays-in-json-with-unity/

This is an extended version of that class which I use myself...

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class JsonHelper
6. {
7.     //Usage:
8.     //YouObject[] objects = JsonHelper.getJsonArray<YouObject> (jsonString);
9.     public static T[] jsonToArray<T>(string json)
10.     {
11.         //string newJson = "{ \"array\": " + json + "}";
12.         Wrapper<T> wrapper = JsonUtility.FromJson<Wrapper<T>>(json);
13.         return wrapper.array;
14.     }
15.  
16.     //Usage:
17.     //List<YouObject> objects = JsonHelper.jsonToList<YouObject> (jsonString);
18.     public static List<T> jsonToList<T>(string json)
19.     {
20.         return new List<T>(jsonToArray<T>(json));
21.     }
22.  
23.     //Usage:
24.     //string jsonString = JsonHelper.arrayToJson<YouObject>(objects);
25.     public static string arrayToJson<T>(T[] array)
26.     {
27.         Wrapper<T> wrapper = new Wrapper<T>();
28.         wrapper.array = array;
29.         return JsonUtility.ToJson(wrapper);
30.     }
31.  
32.     //Usage:
33.     //YouObject[] objects = JsonHelper.getJsonArray<YouObject> (jsonString);
34.     public static T jsonToValueType<T>(string json)
35.     {
36.         //string newJson = "{ \"array\": " + json + "}";
37.         ValueTypeWrapper<T> wrapper = JsonUtility.FromJson<ValueTypeWrapper<T>>(json);
38.         return wrapper.value;
39.     }
40.  
41.     //Usage:
42.     //string jsonString = JsonHelper.arrayToJson<YouObject>(objects);
43.     public static string valueTypeToJson<T>(T value)
44.     {
45.         ValueTypeWrapper<T> wrapper = new ValueTypeWrapper<T>();
46.         wrapper.value = value;
47.         return JsonUtility.ToJson(wrapper);
48.     }
49.  
50.     [System.Serializable]
51.     private class Wrapper<T>
52.     {
53.         public T[] array;
54.     }
55.  
56.     [System.Serializable]
57.     private class ValueTypeWrapper<T>
58.     {
59.         public T value;
60.     }
61. }

 

How about this one...Simple...Your answer....is way too advanced....I am a beginner..

public struct ListContainer
{
public List<HandleValues> SaveValues;

/// <summary>
/// Constructor
/// </summary>
/// <param name="_dataList">Data list value</param>
public ListContainer(List<HandleValues> _dataList)
{
SaveValues = _dataList;
}
}

 

I've added two methods to your ListContainer, the first returns a json string representation of the HandleValues list and the second returns a new list container populated with the values contained in the supplied json string.

Code (CSharp):

1.     public struct ListContainer
2.     {
3.         public List<HandleValues> SaveValues;
4.  
5.         /// <summary>
6.         /// Constructor
7.         /// </summary>
8.         /// <param name="_dataList">Data list value</param>
9.         public ListContainer(List<HandleValues> _dataList)
10.         {
11.             SaveValues = _dataList;
12.         }
13.  
14.         public string ToJson()
15.         {
16.             return JsonHelper.arrayToJson(SaveValues.ToArray());
17.         }
18.  
19.         public static ListContainer FromJson(string json)
20.         {
21.             return new ListContainer(JsonHelper.jsonToList<HandleValues>(json));
22.         }
23.     }

I don't really know how to make it any simpler, sorry.

 

I got it using the above which I mentioned earlier

 

Last time I soved with your help...Same problem can you take look at this question abt mine . I am sending list in both cases.In one I am getting using your method but in the other I am not getting jsonstring.

https://forum.unity.com/threads/how...to-json-code-not-working.728462/#post-4861187

 

I tried your method....

Code (CSharp):

1.  
2.  
3. public class PlayerHandler
4. {
5.     public int id;
6.     public Vector2 allposition;
7.     public Quaternion allrotation;
8.     public Vector2 allscale;
9.    
10.  
11.  
12.     public PlayerHandler(int ids,Vector2 allpos,Quaternion allrot,Vector2 allscal)
13.     {
14.         this.id = ids;
15.         this.allposition = allpos;
16.         this.allrotation = allrot;
17.         this.allscale = allscal;
18.        
19.     }
20.  
21.    
22. }
23.  
24. List<PlayerHandler> getAlldata;
25.  
26.  
27. public struct ListContainer
28.     {
29.  
30.         public static List<PlayerHandler> SaveValues;
31.  
32.         public ListContainer(List<PlayerHandler> _saveVal)
33.         {
34.             SaveValues = _saveVal;
35.         }
36.  
37.     }
38.  
39. //get all data contains customized data
40. ListContainer container = new ListContainer(getAlldata);
41.  
42. //I am getting null string below after using Jsonhelper class
43. //also the Savevalue contains items(not empty)
44. string jsonstring = JsonHelper.arrayToJson(ListContainer.SaveValues.ToArray());
45.         Debug.Log("string is = " + jsonstring);

 

Looking at the code you've provided it looks like getAlldata is still null when you serialize it, so I'd expect arrayToJson to return an empty string in that case.

Edit: In fact it would give a null ref error, not return an empty string.

 

I have Printed the GetAllData below

Code (CSharp):

1. Get All data = (-3.9, -2.3) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
2. Get All data = (-1.2, -6.8Get All data = (3.4, -5.4) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
3. Get All data = (3.6, -2.6) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
4. Get All data = (-3.2, 2.5) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
5. Get All data = (-0.7, 6.1) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
6. Get All dataGet All data = (3.8, 2.3) : (0.0, 0.0, 0.0, 1.0) : (1.0, 1.0)
7. looks like some data are null

 

Your player handler struct wasn't marked as serializable also the SaveValues field of the ListContainer shouldn't be static.

I've whipped up a working example, which results in a debug.log result of:-

string is = {"array":[{"id":10,"allposition":{"x":20.0,"y":30.0},"allrotation":{"x":0.5597265362739563,"y":0.1612740159034729,"z":0.27709752321243288,"w":0.7641425132751465},"allscale":{"x":80.0,"y":90.0}}]}
UnityEngine.Debug:Log(Object)
TestJson:Start() (at Assets/Garador/Skills System/Skills/TestJson.cs:15)

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class TestJson : MonoBehaviour
6. {
7.     List<PlayerHandler> getAlldata = new List<PlayerHandler>();
8.  
9.     void Start()
10.     {
11.         getAlldata.Add(new PlayerHandler(10, new Vector3(20, 30, 40), Quaternion.Euler(50, 60, 70), new Vector2(80, 90)));
12.         ListContainer container = new ListContainer(getAlldata);
13.  
14.         string jsonstring = JsonHelper.arrayToJson(container.SaveValues.ToArray());
15.         Debug.Log("string is = " + jsonstring);
16.     }
17. }
18.  
19. public struct ListContainer
20. {
21.     public List<PlayerHandler> SaveValues;
22.  
23.     public ListContainer(List<PlayerHandler> _saveVal)
24.     {
25.         SaveValues = _saveVal;
26.     }
27. }
28.  
29.  
30. [System.Serializable]
31. public class PlayerHandler
32. {
33.     public int id;
34.     public Vector2 allposition;
35.     public Quaternion allrotation;
36.     public Vector2 allscale;
37.  
38.     public PlayerHandler(int ids, Vector2 allpos, Quaternion allrot, Vector2 allscal)
39.     {
40.         this.id = ids;
41.         this.allposition = allpos;
42.         this.allrotation = allrot;
43.         this.allscale = allscal;
44.     }
45. }

 

Really appreciate that code...thnks....Why Do I forget that all the time...[System.Serilizable]....

 

This was what i was referring to can be done using jsonutility also...