void Update()

	{

		if (Input.GetMouseButtonDown(0)||(Input.touchCount >0 && Input.GetTouch(0).phase == TouchPhase.Began))

		{

#if IPHONE || ANDROID

			if (EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId))

#else

			if (EventSystem.current.IsPointerOverGameObject())

#endif

				Debug.Log("当前触摸在UI上");

			else

				Debug.Log("当前没有触摸在UI上");

		}

	}