How Json Utility works?

Questions & Answers
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1

Hello , this is Mahsa

Is there anyone to explain JsonUtility very well ? help me out

2

JSON (JavaScript Object Notation): is a data interchange format, used to store and exchange data between a server and a client, or between different software components. JSON is easy for both humans to read and write, and for machines to parse.

Unity’s JsonUtility: is a built-in class that helps you work with JSON data in Unity. It allows you to convert between JSON and C#. You can serialize (convert) C# objects or structure into JSON and deserialize (convert) JSON into C#. This is useful for saving and loading game data, sending and receiving data over a network, or working with any kind of structured data.

// Only plain classes and structures are supported; 
// classes derived from UnityEngine.Object (such as MonoBehaviour or ScriptableObject) are not.
public class PlayerData
{
    public string playerName;
    public int playerScore;
}

public void SavePlayer()
{
    PlayerData playerData = new PlayerData();
    playerData.playerName = "John";
    playerData.playerScore = 100;
    string json = JsonUtility.ToJson(playerData);
    // Saves as a text file, this will be store in the computer even after closing the game
    File.WriteAllText(Application.persistentDataPath + "/playerData.json", json);
}

private void LoadPlayer()
{
    string path = Application.persistentDataPath + "/playerData.json";
    if (File.Exists(path))
    {
        string json = File.ReadAllText(path);
        PlayerData loadedData = JsonUtility.FromJson<PlayerData>(json);
        // After caling SavePlayer() this will restore the saved "John" and "100"
        Debug.Log("Player Name: " + loadedData.playerName);
        Debug.Log("Player Score: " + loadedData.playerScore);
    }
    else
    {
        Debug.Log("No saved player data found.");
    }
}