Check Nen Tang Unity

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class Check : MonoBehaviour {

    Text TextCheck;

    void Start () {
        TextCheck = GameObject.Find ("TextCheck").GetComponent<Text>();
    }

    public void ButtonClick(){
        if (Application.platform == RuntimePlatform.Android)
            TextCheck.text = "Android";
        else {
            if (Application.platform == RuntimePlatform.WP8Player)
                TextCheck.text = "WP8Player";
            else {
                if (Application.platform == RuntimePlatform.WindowsPlayer)
                    TextCheck.text = "WindowsPlayer";
                else
                    TextCheck.text = "Khong Biet";
            }
        }
    }

    void OnEnable ()
    {
        btnCall.onClick.AddListener (() => tryCall ());
    }
    void Disable ()
    {
        btnCall.onClick.RemoveListener (() => tryCall ());
    }
    private void tryCall ()
    {
        /*
        AndroidJNIHelper.debug = true;

        #if UNITY_ANDROID && !UNITY_EDITOR
        AndroidJavaClass jc = new           AndroidJavaClass("com.unity3d.player.UnityPlayer");
        AndroidJavaObject jo =         jc.GetStatic("currentActivity");
        textField.text = jo.Call("getCacheDir").Call("getCanonicalPath");
        #endif
        */
    }
    public Button btnCall;
    public InputField textField;
    private AndroidJavaObject jo;



}