Serialization of: List<string[]> as JSON

Unity Engine
1

I’m working on a little tool that lets me connect several GameObjects with a LineRenderer. It’s possible to connect multiple objects within one line. To store the Data of every connection, I’m saving the GameObject.name of every point in the connection in an array (string[ ]). Serializing this array as JSON worked without problems.

Next step is to store multipe Lines in a list of arrays (List<string[ ]>) and store it as JSON, so I can deserialize all my Lines at once.

Here is what I’m doing:

public ConnectionCollectionObject activeCollection; // <- This one is filled by the user by clicking things in the scene

public void SaveConnectionCollection()
        {           

            if (activeCollection == null) return;        

            Debug.Log(JsonUtility.ToJson(activeCollection, true));  // result: {}

            string path = Path.Combine(Application.persistentDataPath, id + "_ConnectionCollection.json");
            File.WriteAllText(path, JsonUtility.ToJson(activeCollection, true));

            Debug.Log(path + " saved.");
        }

/////////

[Serializable]
   public class ConnectionCollectionObject
   {
       public List<string[]> connectionCollection;
   }

…using the same princple like I used when serializing the string[ ] gives ony an empty .json file.

2

JsonUtility has some limitations on things, so it probably doesn’t handle it correctly. Try Json.net instead.

1 Like
3

Worked thanks!