Unity - Read JSON file From android

Question

My problem is that the JSON file is not loaded/read in android device, only in unity editor. I try many solutions from many sites, like this, this, and this, but nothing happen.

So anyone can help me. This is my code:

private void LoadGameData()
{
    // Path.Combine combines strings into a file path
    // Application.StreamingAssets points to Assets/StreamingAssets in the Editor, and the StreamingAssets folder in a build
    string filePath = Path.Combine(Application.streamingAssetsPath, "Data.json");
    if (File.Exists(filePath))
    {
        // Read the json from the file into a string
        string dataAsJson = File.ReadAllText(filePath);
        // Pass the json to JsonUtility, and tell it to create a GameData object from it
        GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);

        // Retrieve the allRoundData property of loadedData
        Questions = loadedData.Questions ;
    }
    else
    {
        Debug.LogError("Cannot load game data!");
    }
}

I try these codes, but nothing happens: First code:

void Start()
{
    string filePath = "jar:file://" + Application.dataPath + "!/assets/SahAwKhataa.json";
    StartCoroutine(GetDataInAndroid(filePath));
}

IEnumerator GetDataInAndroid(string url)
{
    WWW www = new WWW(url);
    yield return www;
    if (www.text != null)
    {

        string dataAsJson = www.text;
        GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);

        Questions = loadedData.Questions ;
    }
    else
    {
        Debug.LogError("Can not load game data!");
    }
}

The second:

public void ReadJson()
{
    string path = Application.streamingAssetsPath + "/Data.json";
    #if UNITY_EDITOR
    //string path = "/StreamingAssets/Data.json";
    #endif
    WWW www = new WWW(path);
    while (!www.isDone) { }
    string json = www.text;
    GameData loadedData = JsonUtility.FromJson<GameData>(json);
    Questions = loadedData.Questions;
}

GameData script code:

[System.Serializable]
public class GameData 
{
    public GameQuestions[] Questions;
}

GameManager script code:

public class GameManager : MonoBehaviour {

private GameQuestions[] Questions;
private static List<GameQuestions> LevelQuestions ; 

private string gameDataFileName = "Data.json";

private GameQuestions CurrentQuest;

void Start()
{
    TestText.text = "Text1";
    StartCoroutine(LoadStreamingAsset(gameDataFileName));
    TestText.text = "Text2";

    if (LevelQuestions == null || LevelQuestions.Count == 0)
    {
        TestText.text = "Text3";
        LevelQuestions = Questions.ToList<GameQuestions>();
    }
    TestText.text = "Text4";
    int QuestNumber = Random.Range(0, LevelQuestions.Count);
    CurrentQuest= LevelQuestions [QuestNumber ];

    QuestText.text =  CurrentQuest.Quest;
}
 IEnumerator LoadStreamingAsset(string fileName)
{
    string result;
    string filePath = System.IO.Path.Combine(Application.streamingAssetsPath, fileName);

    if (filePath.Contains("://") || filePath.Contains(":///"))
    {
        WWW www = new WWW(filePath);
        yield return www;
        result = www.text;
    }
    else
    {
        result = File.ReadAllText(filePath);
    }
    GameData loadedData = JsonUtility.FromJson<GameData>(result);
    Questions= loadedData.Questions;
    TestText_0.text = loadedData.Questions[0].quest;
}

GameQuestions script code:

[System.Serializable]
public class GameQuestions 
{

public string quest;
public bool isCorrect;
}

Data.json:

{"Questions":[{"quest":"Question 1","isCorrect":true},{"quest":"Question 2","isCorrect":false},{"quest":"Question 3","isCorrect":true}]}