TarasOsiris

using UnityEngine;

public static class AndroidIdRetriever
{
    public static string Retrieve()
    {
        AndroidJavaClass clsUnity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
        AndroidJavaObject objActivity = clsUnity.GetStatic<AndroidJavaObject>("currentActivity");
        AndroidJavaObject objResolver = objActivity.Call<AndroidJavaObject>("getContentResolver");
        AndroidJavaClass clsSecure = new AndroidJavaClass("android.provider.Settings$Secure");