Ad@m_Adam.cs

Adam.cs

public class Adam : MonoBehaviour {

    AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    AndroidJavaObject activity;
    #region Singleton
    private static Adam sInstance;

    public static Adam GetInstance
    {
        get
        {
            if (sInstance == null) sInstance = (Adam)FindObjectOfType(typeof(Adam));

            if (sInstance == null)
            {
                if (GameObject.Find("Singleton"))
                {
                    GameObject goInst = GameObject.Find("Singleton");
                    sInstance = goInst.AddComponent<Adam>();
                }
                else
                {
                    GameObject goInst = new GameObject("Singleton");
                    sInstance = goInst.AddComponent<Adam>();
                }
            }
            return sInstance;
        }
    }
    #endregion

    public void LoadInterstitial()
    {
        activity = jc.GetStatic<AndroidJavaObject>("currentActivity");
        activity.Call("LoadInterstitial");
    }

}

Test.cs

public class Test : MonoBehaviour {

 // Use this for initialization
 void Start () {
        Adam.GetInstance.LoadInterstitial();
 }
}

How to Use.
Adam.cs생성후 다른 스크립트에서 LoadInterstitial() 함수를 호출하면 된다.