UGUI防止点击穿透

        if (!IsPointerOverGameObject(Input.mousePosition))
        {

        }

        public static bool IsPointerOverGameObject(Vector2 screenPosition)
        {
            //实例化点击事件  
            PointerEventData eventDataCurrentPosition = new PointerEventData(UnityEngine.EventSystems.EventSystem.current);
            //将点击位置的屏幕坐标赋值给点击事件  
            eventDataCurrentPosition.position = new Vector2(screenPosition.x, screenPosition.y);
            List<RaycastResult> results = new List<RaycastResult>();
            //向点击处发射射线  
            EventSystem.current.RaycastAll(eventDataCurrentPosition, results);
            return results.Count > 0;
        }

防止UI穿透